Mergehs25-b24

89 files changed, 2849 insertions, 1941 deletions

diff --git a/agent/src/os/bsd/MacosxDebuggerLocal.m b/agent/src/os/bsd/MacosxDebuggerLocal.m
index c14c6b7bc..d5c23a012 100644
--- a/agent/src/os/bsd/MacosxDebuggerLocal.m
+++ b/agent/src/os/bsd/MacosxDebuggerLocal.m
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -40,12 +40,34 @@
 #import <errno.h>
 #import <sys/types.h>
 #import <sys/ptrace.h>
+#include "libproc_impl.h"
 
-jboolean debug = JNI_FALSE;
+#define UNSUPPORTED_ARCH "Unsupported architecture!"
+
+#if defined(x86_64) && !defined(amd64)
+#define amd64 1
+#endif
+
+#if amd64
+#include "sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext.h"
+#else
+#error UNSUPPORTED_ARCH
+#endif
 
 static jfieldID symbolicatorID = 0; // set in _init0
 static jfieldID taskID = 0; // set in _init0
 
+static jfieldID p_ps_prochandle_ID = 0;
+static jfieldID loadObjectList_ID = 0;
+static jmethodID listAdd_ID = 0;
+
+static jmethodID createClosestSymbol_ID = 0;
+static jmethodID createLoadObject_ID = 0;
+static jmethodID getJavaThreadsInfo_ID = 0;
+
+// indicator if thread id (lwpid_t) was set
+static bool _threads_filled = false;
+
 static void putSymbolicator(JNIEnv *env, jobject this_obj, id symbolicator) {
   (*env)->SetLongField(env, this_obj, symbolicatorID, (jlong)(intptr_t)symbolicator);
 }
@@ -76,6 +98,11 @@ static void throw_new_debugger_exception(JNIEnv* env, const char* errMsg) {
   (*env)->ThrowNew(env, (*env)->FindClass(env, "sun/jvm/hotspot/debugger/DebuggerException"), errMsg);
 }
 
+static struct ps_prochandle* get_proc_handle(JNIEnv* env, jobject this_obj) {
+  jlong ptr = (*env)->GetLongField(env, this_obj, p_ps_prochandle_ID);
+  return (struct ps_prochandle*)(intptr_t)ptr;
+}
+
 #if defined(__i386__)
     #define hsdb_thread_state_t     x86_thread_state32_t
     #define hsdb_float_state_t      x86_float_state32_t
@@ -91,7 +118,7 @@ static void throw_new_debugger_exception(JNIEnv* env, const char* errMsg) {
     #define HSDB_THREAD_STATE_COUNT x86_THREAD_STATE64_COUNT
     #define HSDB_FLOAT_STATE_COUNT  x86_FLOAT_STATE64_COUNT
 #else
-    #error "Unsupported architecture"
+    #error UNSUPPORTED_ARCH
 #endif
 
 /*
@@ -104,6 +131,66 @@ Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_init0(JNIEnv *env, jclass cls
   symbolicatorID = (*env)->GetFieldID(env, cls, "symbolicator", "J");
   taskID = (*env)->GetFieldID(env, cls, "task", "J");
   CHECK_EXCEPTION;
+
+  // for core file
+  p_ps_prochandle_ID = (*env)->GetFieldID(env, cls, "p_ps_prochandle", "J");
+  CHECK_EXCEPTION;
+  loadObjectList_ID = (*env)->GetFieldID(env, cls, "loadObjectList", "Ljava/util/List;");
+  CHECK_EXCEPTION;
+
+  // methods we use
+  createClosestSymbol_ID = (*env)->GetMethodID(env, cls, "createClosestSymbol",
+                    "(Ljava/lang/String;J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol;");
+  CHECK_EXCEPTION;
+  createLoadObject_ID = (*env)->GetMethodID(env, cls, "createLoadObject",
+                    "(Ljava/lang/String;JJ)Lsun/jvm/hotspot/debugger/cdbg/LoadObject;");
+  CHECK_EXCEPTION;
+
+  // java.util.List method we call
+  jclass listClass = (*env)->FindClass(env, "java/util/List");
+  CHECK_EXCEPTION;
+  listAdd_ID = (*env)->GetMethodID(env, listClass, "add", "(Ljava/lang/Object;)Z");
+  CHECK_EXCEPTION;
+  getJavaThreadsInfo_ID = (*env)->GetMethodID(env, cls, "getJavaThreadsInfo",
+                                                     "()[J");
+  CHECK_EXCEPTION;
+
+  init_libproc(getenv("LIBSAPROC_DEBUG") != NULL);
+}
+
+JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_getAddressSize
+  (JNIEnv *env, jclass cls)
+{
+#ifdef _LP64
+  return 8;
+#else
+  #error UNSUPPORTED_ARCH
+#endif
+}
+
+/** called by Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_lookupByName0 */
+jlong lookupByNameIncore(
+  JNIEnv *env, struct ps_prochandle *ph, jobject this_obj, jstring objectName, jstring symbolName)
+{
+  const char *objectName_cstr, *symbolName_cstr;
+  jlong addr;
+  jboolean isCopy;
+  objectName_cstr = NULL;
+  if (objectName != NULL) {
+    objectName_cstr = (*env)->GetStringUTFChars(env, objectName, &isCopy);
+    CHECK_EXCEPTION_(0);
+  }
+  symbolName_cstr = (*env)->GetStringUTFChars(env, symbolName, &isCopy);
+  CHECK_EXCEPTION_(0);
+
+  print_debug("look for %s \n", symbolName_cstr);
+  addr = (jlong) lookup_symbol(ph, objectName_cstr, symbolName_cstr);
+
+  if (objectName_cstr != NULL) {
+    (*env)->ReleaseStringUTFChars(env, objectName, objectName_cstr);
+  }
+  (*env)->ReleaseStringUTFChars(env, symbolName, symbolName_cstr);
+  return addr;
 }
 
 /*
@@ -116,14 +203,17 @@ Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_lookupByName0(
   JNIEnv *env, jobject this_obj, 
   jstring objectName, jstring symbolName) 
 {
+  struct ps_prochandle* ph = get_proc_handle(env, this_obj);
+  if (ph->core != NULL) {
+    return lookupByNameIncore(env, ph, this_obj, objectName, symbolName);
+  }
+
   jlong address = 0;
 
 JNF_COCOA_ENTER(env);
   NSString *symbolNameString = JNFJavaToNSString(env, symbolName);
 
-  if (debug) {
-    printf("lookupInProcess called for %s\n", [symbolNameString UTF8String]);
-  }
+  print_debug("lookupInProcess called for %s\n", [symbolNameString UTF8String]);
 
   id symbolicator = getSymbolicator(env, this_obj);
   if (symbolicator != nil) {
@@ -131,9 +221,7 @@ JNF_COCOA_ENTER(env);
     address = (jlong) dynamicCall(symbolicator, @selector(addressForSymbol:), symbolNameString);
   }
 
-  if (debug) {
-    printf("address of symbol %s = %llx\n", [symbolNameString UTF8String], address);
-  }
+  print_debug("address of symbol %s = %llx\n", [symbolNameString UTF8String], address);
 JNF_COCOA_EXIT(env);
 
   return address;
@@ -141,6 +229,42 @@ JNF_COCOA_EXIT(env);
 
 /*
  * Class:     sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
+ * Method:    lookupByAddress0
+ * Signature: (J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol;
+ */
+JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_lookupByAddress0
+  (JNIEnv *env, jobject this_obj, jlong addr) {
+  uintptr_t offset;
+  const char* sym = NULL;
+
+  struct ps_prochandle* ph = get_proc_handle(env, this_obj);
+  sym = symbol_for_pc(ph, (uintptr_t) addr, &offset);
+  if (sym == NULL) return 0;
+  return (*env)->CallObjectMethod(env, this_obj, createClosestSymbol_ID,
+                          (*env)->NewStringUTF(env, sym), (jlong)offset);
+}
+
+/** called from Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_readBytesFromProcess0 */
+jbyteArray readBytesFromCore(
+  JNIEnv *env, struct ps_prochandle *ph, jobject this_obj, jlong addr, jlong numBytes)
+{
+  jboolean isCopy;
+  jbyteArray array;
+  jbyte *bufPtr;
+  ps_err_e err;
+
+  array = (*env)->NewByteArray(env, numBytes);
+  CHECK_EXCEPTION_(0);
+  bufPtr = (*env)->GetByteArrayElements(env, array, &isCopy);
+  CHECK_EXCEPTION_(0);
+
+  err = ps_pread(ph, (psaddr_t) (uintptr_t)addr, bufPtr, numBytes);
+  (*env)->ReleaseByteArrayElements(env, array, bufPtr, 0);
+  return (err == PS_OK)? array : 0;
+}
+
+/*
+ * Class:     sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
  * Method:    readBytesFromProcess0
  * Signature: (JJ)Lsun/jvm/hotspot/debugger/ReadResult;
  */
@@ -149,12 +273,15 @@ Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_readBytesFromProcess0(
   JNIEnv *env, jobject this_obj, 
   jlong addr, jlong numBytes) 
 {
-  if (debug) printf("readBytesFromProcess called. addr = %llx numBytes = %lld\n", addr, numBytes);
+  print_debug("readBytesFromProcess called. addr = %llx numBytes = %lld\n", addr, numBytes);
 
   // must allocate storage instead of using former parameter buf
-  jboolean isCopy;
   jbyteArray array;
-  jbyte *bufPtr;
+
+  struct ps_prochandle* ph = get_proc_handle(env, this_obj);
+  if (ph->core != NULL) {
+    return readBytesFromCore(env, ph, this_obj, addr, numBytes);
+  }
 
   array = (*env)->NewByteArray(env, numBytes);
   CHECK_EXCEPTION_(0);
@@ -189,7 +316,7 @@ Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_readBytesFromProcess0(
     // assume all failures are unmapped pages
   }
 
-  if (debug) fprintf(stderr, "%ld pages\n", pageCount);
+  print_debug("%ld pages\n", pageCount);
 	
   remaining = numBytes;
 	
@@ -207,7 +334,7 @@ Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_readBytesFromProcess0(
     }
 
     if (mapped[i]) {
-      if (debug) fprintf(stderr, "page %d mapped (len %ld start %ld)\n", i, len, start);
+      print_debug("page %d mapped (len %ld start %ld)\n", i, len, start);
       (*env)->SetByteArrayRegion(env, array, 0, len, ((jbyte *) pages[i] + start));
       vm_deallocate(mach_task_self(), pages[i], vm_page_size);
     }
@@ -220,6 +347,115 @@ Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_readBytesFromProcess0(
   return array;
 }
 
+/** Only used for core file reading, set thread_id for threads which is got after core file parsed.
+  * Thread context is available in Mach-O core file but thread id is not. We can get thread id
+  * from Threads which store all java threads information when they are created. Here we can identify
+  * them as java threads by checking if a thread's rsp or rbp within a java thread's stack.
+  * Note Macosx uses unique_thread_id which is different from other platforms though printed ids
+  * are still pthread id. Function BsdDebuggerLocal.getJavaThreadsInfo returns an array of long
+  * integers to host all java threads' id, stack_start, stack_end as:
+  * [uid0, stack_start0, stack_end0, uid1, stack_start1, stack_end1, ...]
+  *
+  * The work cannot be done at init0 since Threads is not available yet(VM not initialized yet). 
+  * This function should be called only once if succeeded
+  */ 
+bool fill_java_threads(JNIEnv* env, jobject this_obj, struct ps_prochandle* ph) {
+  int n = 0, i = 0, j;
+  struct reg regs;
+  
+  jlongArray thrinfos = (*env)->CallObjectMethod(env, this_obj, getJavaThreadsInfo_ID);
+  CHECK_EXCEPTION_(false);
+  int len = (int)(*env)->GetArrayLength(env, thrinfos);
+  uint64_t* cinfos = (uint64_t *)(*env)->GetLongArrayElements(env, thrinfos, NULL);
+  CHECK_EXCEPTION_(false); 
+  n = get_num_threads(ph);
+  print_debug("fill_java_threads called, num_of_thread = %d\n", n);
+  for (i = 0; i < n; i++) {
+    if (!get_nth_lwp_regs(ph, i, &regs)) {
+      print_debug("Could not get regs of thread %d, already set!\n", i);
+      return false;
+    }
+    for (j = 0; j < len; j += 3) {
+      lwpid_t  uid = cinfos[j];
+      uint64_t beg = cinfos[j + 1];
+      uint64_t end = cinfos[j + 2]; 
+      if ((regs.r_rsp < end && regs.r_rsp >= beg) ||
+          (regs.r_rbp < end && regs.r_rbp >= beg)) {
+        set_lwp_id(ph, i, uid);
+        break;
+      }
+    }
+  }
+  (*env)->ReleaseLongArrayElements(env, thrinfos, (jlong*)cinfos, 0);
+  CHECK_EXCEPTION_(false);
+  return true;
+}
+
+/* For core file only, called from
+ * Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_getThreadIntegerRegisterSet0
+ */
+jlongArray getThreadIntegerRegisterSetFromCore(JNIEnv *env, jobject this_obj, long lwp_id) {
+  if (!_threads_filled)  {
+    if (!fill_java_threads(env, this_obj, get_proc_handle(env, this_obj))) {
+      throw_new_debugger_exception(env, "Failed to fill in threads");
+      return 0;
+    } else {
+      _threads_filled = true;
+    }
+  }
+
+  struct reg gregs;
+  jboolean isCopy;
+  jlongArray array;
+  jlong *regs;
+
+  struct ps_prochandle* ph = get_proc_handle(env, this_obj);
+  if (get_lwp_regs(ph, lwp_id, &gregs) != true) {
+    THROW_NEW_DEBUGGER_EXCEPTION_("get_thread_regs failed for a lwp", 0);
+  }
+
+#undef NPRGREG
+#undef REG_INDEX
+#if amd64
+#define NPRGREG sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext_NPRGREG
+#define REG_INDEX(reg) sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext_##reg
+
+  array = (*env)->NewLongArray(env, NPRGREG);
+  CHECK_EXCEPTION_(0);
+  regs = (*env)->GetLongArrayElements(env, array, &isCopy);
+
+  regs[REG_INDEX(R15)] = gregs.r_r15;
+  regs[REG_INDEX(R14)] = gregs.r_r14;
+  regs[REG_INDEX(R13)] = gregs.r_r13;
+  regs[REG_INDEX(R12)] = gregs.r_r12;
+  regs[REG_INDEX(RBP)] = gregs.r_rbp;
+  regs[REG_INDEX(RBX)] = gregs.r_rbx;
+  regs[REG_INDEX(R11)] = gregs.r_r11;
+  regs[REG_INDEX(R10)] = gregs.r_r10;
+  regs[REG_INDEX(R9)]  = gregs.r_r9;
+  regs[REG_INDEX(R8)]  = gregs.r_r8;
+  regs[REG_INDEX(RAX)] = gregs.r_rax;
+  regs[REG_INDEX(RCX)] = gregs.r_rcx;
+  regs[REG_INDEX(RDX)] = gregs.r_rdx;
+  regs[REG_INDEX(RSI)] = gregs.r_rsi;
+  regs[REG_INDEX(RDI)] = gregs.r_rdi;
+  regs[REG_INDEX(RIP)] = gregs.r_rip;
+  regs[REG_INDEX(CS)]  = gregs.r_cs;
+  regs[REG_INDEX(RSP)] = gregs.r_rsp;
+  regs[REG_INDEX(SS)]  = gregs.r_ss;
+  regs[REG_INDEX(FSBASE)] = 0;
+  regs[REG_INDEX(GSBASE)] = 0;
+  regs[REG_INDEX(DS)] = gregs.r_ds;
+  regs[REG_INDEX(ES)] = gregs.r_es;
+  regs[REG_INDEX(FS)] = gregs.r_fs;
+  regs[REG_INDEX(GS)] = gregs.r_gs;
+  regs[REG_INDEX(TRAPNO)] = gregs.r_trapno;
+  regs[REG_INDEX(RFL)]    = gregs.r_rflags;
+
+#endif /* amd64 */
+  (*env)->ReleaseLongArrayElements(env, array, regs, JNI_COMMIT);
+  return array;
+}
 
 /*
  * Lookup the thread_t that corresponds to the given thread_id.
@@ -232,9 +468,7 @@ Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_readBytesFromProcess0(
  */
 thread_t
 lookupThreadFromThreadId(task_t task, jlong thread_id) {
-  if (debug) {
-    printf("lookupThreadFromThreadId thread_id=0x%llx\n", thread_id);
-  }
+  print_debug("lookupThreadFromThreadId thread_id=0x%llx\n", thread_id);
   
   thread_array_t thread_list = NULL;
   mach_msg_type_number_t thread_list_count = 0;
@@ -244,9 +478,7 @@ lookupThreadFromThreadId(task_t task, jlong thread_id) {
   // get the list of all the send rights
   kern_return_t result = task_threads(task, &thread_list, &thread_list_count);
   if (result != KERN_SUCCESS) {
-    if (debug) {
-      printf("task_threads returned 0x%x\n", result);
-    }
+    print_debug("task_threads returned 0x%x\n", result);
     return 0;
   }
   
@@ -257,9 +489,7 @@ lookupThreadFromThreadId(task_t task, jlong thread_id) {
     // get the THREAD_IDENTIFIER_INFO for the send right
     result = thread_info(thread_list[i], THREAD_IDENTIFIER_INFO, (thread_info_t) &m_ident_info, &count);
     if (result != KERN_SUCCESS) {
-      if (debug) {
-        printf("thread_info returned 0x%x\n", result);
-      }
+      print_debug("thread_info returned 0x%x\n", result);
       break;
     }
     
@@ -288,15 +518,17 @@ Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_getThreadIntegerRegisterSet0(
   JNIEnv *env, jobject this_obj, 
   jlong thread_id) 
 {
-  if (debug)
-    printf("getThreadRegisterSet0 called\n");
+  print_debug("getThreadRegisterSet0 called\n");
+
+  struct ps_prochandle* ph = get_proc_handle(env, this_obj);
+  if (ph->core != NULL) {
+    return getThreadIntegerRegisterSetFromCore(env, this_obj, thread_id);
+  }
 
   kern_return_t result;
   thread_t tid;
   mach_msg_type_number_t count = HSDB_THREAD_STATE_COUNT;
   hsdb_thread_state_t state;
-  unsigned int *r;
-  int i;
   jlongArray registerArray;
   jlong *primitiveArray;
   task_t gTask = getTask(env, this_obj);
@@ -306,97 +538,56 @@ Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_getThreadIntegerRegisterSet0(
   result = thread_get_state(tid, HSDB_THREAD_STATE, (thread_state_t)&state, &count);
 
   if (result != KERN_SUCCESS) {
-    if (debug)
-      printf("getregs: thread_get_state(%d) failed (%d)\n", tid, result);
+    print_error("getregs: thread_get_state(%d) failed (%d)\n", tid, result);
     return NULL;
   }
 
-  // 40 32-bit registers on ppc, 16 on x86. 
-  // Output order is the same as the order in the ppc_thread_state/i386_thread_state struct.
-#if defined(__i386__)
-	r = (unsigned int *)&state;
-	registerArray = (*env)->NewLongArray(env, 8);
-	primitiveArray = (*env)->GetLongArrayElements(env, registerArray, NULL);
-	primitiveArray[0] = r[0];  // eax
-	primitiveArray[1] = r[2];  // ecx
-	primitiveArray[2] = r[3];  // edx
-	primitiveArray[3] = r[1];  // ebx
-	primitiveArray[4] = r[7];  // esp
-	primitiveArray[5] = r[6];  // ebp
-	primitiveArray[6] = r[5];  // esi
-	primitiveArray[7] = r[4];  // edi
-	(*env)->ReleaseLongArrayElements(env, registerArray, primitiveArray, 0);
-#elif defined(__x86_64__)
-	/* From AMD64ThreadContext.java
-	   public static final int R15 = 0;
-	   public static final int R14 = 1;
-	   public static final int R13 = 2;
-	   public static final int R12 = 3;
-	   public static final int R11 = 4;
-	   public static final int R10 = 5;
-	   public static final int R9  = 6;
-	   public static final int R8  = 7;
-	   public static final int RDI = 8;
-	   public static final int RSI = 9;
-	   public static final int RBP = 10;
-	   public static final int RBX = 11;
-	   public static final int RDX = 12;
-	   public static final int RCX = 13;
-	   public static final int RAX = 14;
-	   public static final int TRAPNO = 15;
-	   public static final int ERR = 16;
-	   public static final int RIP = 17;
-	   public static final int CS = 18;
-	   public static final int RFL = 19;
-	   public static final int RSP = 20;
-	   public static final int SS = 21;
-	   public static final int FS = 22;
-	   public static final int GS = 23;
-	   public static final int ES = 24;
-	   public static final int DS = 25;
-	   public static final int FSBASE = 26;
-	   public static final int GSBASE = 27;
-	 */
-	// 64 bit
-	if (debug) printf("Getting threads for a 64-bit process\n");
-	registerArray = (*env)->NewLongArray(env, 28);
-	primitiveArray = (*env)->GetLongArrayElements(env, registerArray, NULL);
-
-	primitiveArray[0] = state.__r15;
-	primitiveArray[1] = state.__r14;
-	primitiveArray[2] = state.__r13;
-	primitiveArray[3] = state.__r12;
-	primitiveArray[4] = state.__r11;
-	primitiveArray[5] = state.__r10;
-	primitiveArray[6] = state.__r9;
-	primitiveArray[7] = state.__r8;
-	primitiveArray[8] = state.__rdi;
-	primitiveArray[9] = state.__rsi;
-	primitiveArray[10] = state.__rbp;
-	primitiveArray[11] = state.__rbx;
-	primitiveArray[12] = state.__rdx;
-	primitiveArray[13] = state.__rcx;
-	primitiveArray[14] = state.__rax;
-	primitiveArray[15] = 0;             // trapno ?
-	primitiveArray[16] = 0;             // err ?
-	primitiveArray[17] = state.__rip;
-	primitiveArray[18] = state.__cs;
-	primitiveArray[19] = state.__rflags;
-	primitiveArray[20] = state.__rsp;
-	primitiveArray[21] = 0;            // We don't have SS
-	primitiveArray[22] = state.__fs;
-	primitiveArray[23] = state.__gs;
-	primitiveArray[24] = 0;
-	primitiveArray[25] = 0;
-	primitiveArray[26] = 0;
-	primitiveArray[27] = 0;
-
-	if (debug) printf("set registers\n");
-
-	(*env)->ReleaseLongArrayElements(env, registerArray, primitiveArray, 0);
+#if amd64
+#define NPRGREG sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext_NPRGREG
+#undef REG_INDEX
+#define REG_INDEX(reg) sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext_##reg
+
+  // 64 bit
+  print_debug("Getting threads for a 64-bit process\n");
+  registerArray = (*env)->NewLongArray(env, NPRGREG);
+  CHECK_EXCEPTION_(0);
+  primitiveArray = (*env)->GetLongArrayElements(env, registerArray, NULL);
+
+  primitiveArray[REG_INDEX(R15)] = state.__r15;
+  primitiveArray[REG_INDEX(R14)] = state.__r14;
+  primitiveArray[REG_INDEX(R13)] = state.__r13;
+  primitiveArray[REG_INDEX(R12)] = state.__r12;
+  primitiveArray[REG_INDEX(R11)] = state.__r11;
+  primitiveArray[REG_INDEX(R10)] = state.__r10;
+  primitiveArray[REG_INDEX(R9)]  = state.__r9;
+  primitiveArray[REG_INDEX(R8)]  = state.__r8;
+  primitiveArray[REG_INDEX(RDI)] = state.__rdi;
+  primitiveArray[REG_INDEX(RSI)] = state.__rsi;
+  primitiveArray[REG_INDEX(RBP)] = state.__rbp;
+  primitiveArray[REG_INDEX(RBX)] = state.__rbx;
+  primitiveArray[REG_INDEX(RDX)] = state.__rdx;
+  primitiveArray[REG_INDEX(RCX)] = state.__rcx;
+  primitiveArray[REG_INDEX(RAX)] = state.__rax;
+  primitiveArray[REG_INDEX(TRAPNO)] = 0;            // trapno, not used
+  primitiveArray[REG_INDEX(ERR)]    = 0;            // err, not used 
+  primitiveArray[REG_INDEX(RIP)] = state.__rip;
+  primitiveArray[REG_INDEX(CS)]  = state.__cs;
+  primitiveArray[REG_INDEX(RFL)] = state.__rflags;
+  primitiveArray[REG_INDEX(RSP)] = state.__rsp;
+  primitiveArray[REG_INDEX(SS)] = 0;                // We don't have SS
+  primitiveArray[REG_INDEX(FS)] = state.__fs;
+  primitiveArray[REG_INDEX(GS)] = state.__gs;
+  primitiveArray[REG_INDEX(ES)] = 0;
+  primitiveArray[REG_INDEX(DS)] = 0;
+  primitiveArray[REG_INDEX(FSBASE)] = 0;
+  primitiveArray[REG_INDEX(GSBASE)] = 0;
+  print_debug("set registers\n");
+
+  (*env)->ReleaseLongArrayElements(env, registerArray, primitiveArray, 0);
+
 #else
-#error Unsupported architecture
-#endif
+#error UNSUPPORTED_ARCH
+#endif /* amd64 */
 
   return registerArray;
 }
@@ -410,8 +601,7 @@ JNIEXPORT jint JNICALL
 Java_sun_jvm_hotspot_debugger_macosx_MacOSXDebuggerLocal_translateTID0(
   JNIEnv *env, jobject this_obj, jint tid) 
 {
-  if (debug)
-    printf("translateTID0 called on tid = 0x%x\n", (int)tid);
+  print_debug("translateTID0 called on tid = 0x%x\n", (int)tid);
 
   kern_return_t result;
   thread_t foreign_tid, usable_tid;
@@ -426,8 +616,7 @@ Java_sun_jvm_hotspot_debugger_macosx_MacOSXDebuggerLocal_translateTID0(
   if (result != KERN_SUCCESS)
     return -1;
     
-  if (debug)
-    printf("translateTID0: 0x%x -> 0x%x\n", foreign_tid, usable_tid);
+  print_debug("translateTID0: 0x%x -> 0x%x\n", foreign_tid, usable_tid);
     
   return (jint) usable_tid;
 }
@@ -437,7 +626,7 @@ static bool ptrace_continue(pid_t pid, int signal) {
   // pass the signal to the process so we don't swallow it
   int res;
   if ((res = ptrace(PT_CONTINUE, pid, (caddr_t)1, signal)) < 0) {
-    fprintf(stderr, "attach: ptrace(PT_CONTINUE, %d) failed with %d\n", pid, res);
+    print_error("attach: ptrace(PT_CONTINUE, %d) failed with %d\n", pid, res);
     return false;
   }
   return true;
@@ -461,11 +650,11 @@ static bool ptrace_waitpid(pid_t pid) {
           return true;
         }
         if (!ptrace_continue(pid, WSTOPSIG(status))) {
-          fprintf(stderr, "attach: Failed to correctly attach to VM. VM might HANG! [PTRACE_CONT failed, stopped by %d]\n", WSTOPSIG(status));
+          print_error("attach: Failed to correctly attach to VM. VM might HANG! [PTRACE_CONT failed, stopped by %d]\n", WSTOPSIG(status));
           return false;
         }
       } else {
-        fprintf(stderr, "attach: waitpid(): Child process exited/terminated (status = 0x%x)\n", status);
+        print_error("attach: waitpid(): Child process exited/terminated (status = 0x%x)\n", status);
         return false;
       }
     } else {
@@ -474,13 +663,13 @@ static bool ptrace_waitpid(pid_t pid) {
           continue;
           break;
         case ECHILD:
-          fprintf(stderr, "attach: waitpid() failed. Child process pid (%d) does not exist \n", pid);
+          print_error("attach: waitpid() failed. Child process pid (%d) does not exist \n", pid);
           break;
         case EINVAL:
-          fprintf(stderr, "attach: waitpid() failed. Invalid options argument.\n");
+          print_error("attach: waitpid() failed. Invalid options argument.\n");
           break;
         default:
-          fprintf(stderr, "attach: waitpid() failed. Unexpected error %d\n",errno);
+          print_error("attach: waitpid() failed. Unexpected error %d\n",errno);
           break;
       }
       return false;
@@ -492,7 +681,7 @@ static bool ptrace_waitpid(pid_t pid) {
 static bool ptrace_attach(pid_t pid) {
   int res;
   if ((res = ptrace(PT_ATTACH, pid, 0, 0)) < 0) {
-    fprintf(stderr, "ptrace(PT_ATTACH, %d) failed with %d\n", pid, res);
+    print_error("ptrace(PT_ATTACH, %d) failed with %d\n", pid, res);
     return false;
   } else {
     return ptrace_waitpid(pid);
@@ -504,23 +693,19 @@ static bool ptrace_attach(pid_t pid) {
  * Method:    attach0
  * Signature: (I)V
  */
-JNIEXPORT void JNICALL 
+JNIEXPORT void JNICALL
 Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_attach0__I(
-  JNIEnv *env, jobject this_obj, jint jpid) 
+  JNIEnv *env, jobject this_obj, jint jpid)
 {
+  print_debug("attach0 called for jpid=%d\n", (int)jpid);
+
 JNF_COCOA_ENTER(env);
-  if (getenv("JAVA_SAPROC_DEBUG") != NULL)
-    debug = JNI_TRUE;
-  else
-    debug = JNI_FALSE;
-  if (debug) printf("attach0 called for jpid=%d\n", (int)jpid);
-  
-  // get the task from the pid
+
   kern_return_t result;
   task_t gTask = 0;
   result = task_for_pid(mach_task_self(), jpid, &gTask);
   if (result != KERN_SUCCESS) {
-    fprintf(stderr, "attach: task_for_pid(%d) failed (%d)\n", (int)jpid, result);
+    print_error("attach: task_for_pid(%d) failed (%d)\n", (int)jpid, result);
     THROW_NEW_DEBUGGER_EXCEPTION("Can't attach to the process");
   }
   putTask(env, this_obj, gTask);
@@ -550,18 +735,79 @@ JNF_COCOA_ENTER(env);
 JNF_COCOA_EXIT(env);
 }
 
+/** For core file, 
+    called from Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_attach0__Ljava_lang_String_2Ljava_lang_String_2 */
+static void fillLoadObjects(JNIEnv* env, jobject this_obj, struct ps_prochandle* ph) {
+  int n = 0, i = 0;
+
+  // add load objects
+  n = get_num_libs(ph);
+  for (i = 0; i < n; i++) {
+     uintptr_t base;
+     const char* name;
+     jobject loadObject;
+     jobject loadObjectList;
+
+     base = get_lib_base(ph, i);
+     name = get_lib_name(ph, i);
+     loadObject = (*env)->CallObjectMethod(env, this_obj, createLoadObject_ID,
+                                   (*env)->NewStringUTF(env, name), (jlong)0, (jlong)base);
+     CHECK_EXCEPTION;
+     loadObjectList = (*env)->GetObjectField(env, this_obj, loadObjectList_ID);
+     CHECK_EXCEPTION;
+     (*env)->CallBooleanMethod(env, loadObjectList, listAdd_ID, loadObject);
+     CHECK_EXCEPTION;
+  }
+}
+
+/*
+ * Class:     sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
+ * Method:    attach0
+ * Signature: (Ljava/lang/String;Ljava/lang/String;)V
+ */
+JNIEXPORT void JNICALL
+Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_attach0__Ljava_lang_String_2Ljava_lang_String_2(
+  JNIEnv *env, jobject this_obj, jstring execName, jstring coreName)
+{
+  const char *execName_cstr;
+  const char *coreName_cstr;
+  jboolean isCopy;
+  struct ps_prochandle* ph;
+
+  execName_cstr = (*env)->GetStringUTFChars(env, execName, &isCopy);
+  CHECK_EXCEPTION;
+  coreName_cstr = (*env)->GetStringUTFChars(env, coreName, &isCopy);
+  CHECK_EXCEPTION;
+
+  print_debug("attach: %s %s\n", execName_cstr, coreName_cstr);
+
+  if ( (ph = Pgrab_core(execName_cstr, coreName_cstr)) == NULL) {
+    (*env)->ReleaseStringUTFChars(env, execName, execName_cstr);
+    (*env)->ReleaseStringUTFChars(env, coreName, coreName_cstr);
+    THROW_NEW_DEBUGGER_EXCEPTION("Can't attach to the core file");
+  }
+  (*env)->SetLongField(env, this_obj, p_ps_prochandle_ID, (jlong)(intptr_t)ph);
+  (*env)->ReleaseStringUTFChars(env, execName, execName_cstr);
+  (*env)->ReleaseStringUTFChars(env, coreName, coreName_cstr);
+  fillLoadObjects(env, this_obj, ph);
+}
+
 /*
  * Class:     sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
  * Method:    detach0
  * Signature: ()V
  */
-JNIEXPORT void JNICALL 
+JNIEXPORT void JNICALL
 Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_detach0(
-  JNIEnv *env, jobject this_obj) 
+  JNIEnv *env, jobject this_obj)
 {
+  print_debug("detach0 called\n");
+  struct ps_prochandle* ph = get_proc_handle(env, this_obj);
+  if (ph != NULL && ph->core != NULL) {
+     Prelease(ph);
+     return;
+  }
 JNF_COCOA_ENTER(env);
-  if (debug) printf("detach0 called\n");
-
   task_t gTask = getTask(env, this_obj);
 
   // detach from the ptraced process causing it to resume execution
@@ -569,15 +815,15 @@ JNF_COCOA_ENTER(env);
   kern_return_t k_res;
   k_res = pid_for_task(gTask, &pid);
   if (k_res != KERN_SUCCESS) {
-    fprintf(stderr, "detach: pid_for_task(%d) failed (%d)\n", pid, k_res);
+    print_error("detach: pid_for_task(%d) failed (%d)\n", pid, k_res);
   }
   else {
     int res = ptrace(PT_DETACH, pid, 0, 0);
     if (res < 0) {
-      fprintf(stderr, "detach: ptrace(PT_DETACH, %d) failed (%d)\n", pid, res);
+      print_error("detach: ptrace(PT_DETACH, %d) failed (%d)\n", pid, res);
     }
   }
-  
+
   mach_port_deallocate(mach_task_self(), gTask);
   id symbolicator = getSymbolicator(env, this_obj);
   if (symbolicator != nil) {
@@ -585,170 +831,3 @@ JNF_COCOA_ENTER(env);
   }
 JNF_COCOA_EXIT(env);
 }
-
-/*
- * Class:     sun_jvm_hotspot_asm_Disassembler
- * Method:    load_library
- * Signature: (Ljava/lang/String;)L
- */
-JNIEXPORT jlong JNICALL
-Java_sun_jvm_hotspot_asm_Disassembler_load_1library(
-  JNIEnv * env, 
-  jclass disclass,
-  jstring jrepath_s,
-  jstring libname_s) 
-{
-  uintptr_t func = 0;
-  const char* error_message = NULL;
-  const char* java_home;
-  jboolean isCopy;
-  uintptr_t *handle = NULL;
-
-  const char * jrepath = (*env)->GetStringUTFChars(env, jrepath_s, &isCopy); // like $JAVA_HOME/jre/lib/sparc/
-  const char * libname = (*env)->GetStringUTFChars(env, libname_s, &isCopy);
-  char buffer[128];
-
-  /* Load the hsdis library */
-  void* hsdis_handle;
-  hsdis_handle = dlopen(libname, RTLD_LAZY | RTLD_GLOBAL);
-  if (hsdis_handle == NULL) {
-    snprintf(buffer, sizeof(buffer), "%s%s", jrepath, libname);
-    hsdis_handle = dlopen(buffer, RTLD_LAZY | RTLD_GLOBAL);
-  }
-  if (hsdis_handle != NULL) {
-    func = (uintptr_t)dlsym(hsdis_handle, "decode_instructions_virtual");
-  }
-  if (func == 0) {
-    error_message = dlerror();
-    fprintf(stderr, "%s\n", error_message);
-  }
-
-  (*env)->ReleaseStringUTFChars(env, libname_s, libname);
-  (*env)->ReleaseStringUTFChars(env, jrepath_s, jrepath);
-
-  if (func == 0) {
-    /* Couldn't find entry point.  error_message should contain some
-     * platform dependent error message.
-     */
-    THROW_NEW_DEBUGGER_EXCEPTION_(error_message, (jlong)func);
-  }
-  return (jlong)func;
-}
-
-/* signature of decode_instructions_virtual from hsdis.h */
-typedef void* (*decode_func)(uintptr_t start_va, uintptr_t end_va,
-                             unsigned char* start, uintptr_t length,
-                             void* (*event_callback)(void*, const char*, void*),
-                             void* event_stream,
-                             int (*printf_callback)(void*, const char*, ...),
-                             void* printf_stream,
-                             const char* options);
-
-/* container for call back state when decoding instructions */
-typedef struct {
-  JNIEnv* env;
-  jobject dis;
-  jobject visitor;
-  jmethodID handle_event;
-  jmethodID raw_print;
-  char buffer[4096];
-} decode_env;
-
-
-/* event callback binding to Disassembler.handleEvent */
-static void* event_to_env(void* env_pv, const char* event, void* arg) {
-  decode_env* denv = (decode_env*)env_pv;
-  JNIEnv* env = denv->env;
-  jstring event_string = (*env)->NewStringUTF(env, event);
-  jlong result = (*env)->CallLongMethod(env, denv->dis, denv->handle_event, denv->visitor,
-                                        event_string, (jlong) (uintptr_t)arg);
-  /* ignore exceptions for now */
-  CHECK_EXCEPTION_CLEAR_((void *)0);
-  return (void*)(uintptr_t)result;
-}
-
-/* printing callback binding to Disassembler.rawPrint */
-static int printf_to_env(void* env_pv, const char* format, ...) {
-  jstring output;
-  va_list ap;
-  int cnt;
-  decode_env* denv = (decode_env*)env_pv;
-  JNIEnv* env = denv->env;
-  size_t flen = strlen(format);
-  const char* raw = NULL;
-
-  if (flen == 0)  return 0;
-  if (flen < 2 ||
-      strchr(format, '%') == NULL) {
-    raw = format;
-  } else if (format[0] == '%' && format[1] == '%' &&
-             strchr(format+2, '%') == NULL) {
-    // happens a lot on machines with names like %foo
-    flen--;
-    raw = format+1;
-  }
-  if (raw != NULL) {
-    jstring output = (*env)->NewStringUTF(env, raw);
-    (*env)->CallVoidMethod(env, denv->dis, denv->raw_print, denv->visitor, output);
-    CHECK_EXCEPTION_CLEAR;
-    return (int) flen;
-  }
-  va_start(ap, format);
-  cnt = vsnprintf(denv->buffer, sizeof(denv->buffer), format, ap);
-  va_end(ap);
-
-  output = (*env)->NewStringUTF(env, denv->buffer);
-  (*env)->CallVoidMethod(env, denv->dis, denv->raw_print, denv->visitor, output);
-  CHECK_EXCEPTION_CLEAR;
-  return cnt;
-}
-
-/*
- * Class:     sun_jvm_hotspot_asm_Disassembler
- * Method:    decode
- * Signature: (Lsun/jvm/hotspot/asm/InstructionVisitor;J[BLjava/lang/String;J)V
- */
-JNIEXPORT void JNICALL
-Java_sun_jvm_hotspot_asm_Disassembler_decode(
-   JNIEnv * env,
-   jobject dis,
-   jobject visitor,
-   jlong startPc,
-   jbyteArray code,
-   jstring options_s,
-   jlong decode_instructions_virtual) 
-{
-  jboolean isCopy;
-  jbyte* start = (*env)->GetByteArrayElements(env, code, &isCopy);
-  jbyte* end = start + (*env)->GetArrayLength(env, code);
-  const char * options = (*env)->GetStringUTFChars(env, options_s, &isCopy);
-  jclass disclass = (*env)->GetObjectClass(env, dis);
-
-  decode_env denv;
-  denv.env = env;
-  denv.dis = dis;
-  denv.visitor = visitor;
-
-  /* find Disassembler.handleEvent callback */
-  denv.handle_event = (*env)->GetMethodID(env, disclass, "handleEvent",
-                                          "(Lsun/jvm/hotspot/asm/InstructionVisitor;Ljava/lang/String;J)J");
-  CHECK_EXCEPTION_CLEAR_VOID
-
-  /* find Disassembler.rawPrint callback */
-  denv.raw_print = (*env)->GetMethodID(env, disclass, "rawPrint",
-                                       "(Lsun/jvm/hotspot/asm/InstructionVisitor;Ljava/lang/String;)V");
-  CHECK_EXCEPTION_CLEAR_VOID
-
-  /* decode the buffer */
-  (*(decode_func)(uintptr_t)decode_instructions_virtual)(startPc,
-                                                         startPc + end - start,
-                                                         (unsigned char*)start,
-                                                         end - start,
-                                                         &event_to_env,  (void*) &denv,
-                                                         &printf_to_env, (void*) &denv,
-                                                         options);
-
-  /* cleanup */
-  (*env)->ReleaseByteArrayElements(env, code, start, JNI_ABORT);
-  (*env)->ReleaseStringUTFChars(env, options_s, options);
-}
diff --git a/agent/src/os/bsd/Makefile b/agent/src/os/bsd/Makefile
index 90085c6ee..ce3e2c4c3 100644
--- a/agent/src/os/bsd/Makefile
+++ b/agent/src/os/bsd/Makefile
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2002, 2009, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -22,34 +22,60 @@
 #  
 #
 
-ARCH := $(shell if ([ `uname -m` = "ia64" ])  ; then echo ia64 ; elif ([ `uname -m` = "amd64" ]) ; then echo amd64; elif ([ `uname -m` = "sparc64" ]) ; then echo sparc; else echo i386 ; fi )
+ARCH := $(shell if ([ `uname -m` = "ia64" ])  ; then echo ia64 ; elif ([ `uname -m` = "amd64" ]) ; then echo amd64; elif ([ `uname -m` = "x86_64" ]) ; then echo amd64; elif ([ `uname -m` = "sparc64" ]) ; then echo sparc; else echo i386 ; fi )
+
+OS       := $(shell uname -s)
+
 GCC      = gcc
 
 JAVAH    = ${JAVA_HOME}/bin/javah
 
+ifneq ($(OS), Darwin)
 SOURCES  = salibelf.c   \
         symtab.c        \
 	libproc_impl.c  \
 	ps_proc.c       \
 	ps_core.c       \
 	BsdDebuggerLocal.c
+OBJS    = $(SOURCES:.c=.o)
+OBJSPLUS = $(OBJS) sadis.o
+LIBSA = $(ARCH)/libsaproc.so
 
-INCLUDES = -I${JAVA_HOME}/include -I${JAVA_HOME}/include/$(shell uname -s | tr "[:upper:]" "[:lower:]")
+LIBS     = -lutil -lthread_db
 
-OBJS     = $(SOURCES:.c=.o)
+else
 
-LIBS     = -lutil -lthread_db
+SOURCES  = symtab.c     \
+	libproc_impl.c  \
+	ps_core.c
+OBJS    = $(SOURCES:.c=.o)
+OBJSPLUS = MacosxDebuggerLocal.o sadis.o $(OBJS)
+EXTINCLUDE = -I/System/Library/Frameworks/JavaVM.framework/Headers -I.
+EXTCFLAGS = -m64 -D__APPLE__ -framework JavaNativeFoundation
+FOUNDATIONFLAGS = -framework Foundation -F/System/Library/Frameworks/JavaVM.framework/Frameworks -framework JavaNativeFoundation -framework Security -framework CoreFoundation
+LIBSA = $(ARCH)/libsaproc.dylib
+endif   # Darwin
+
+INCLUDES = -I${JAVA_HOME}/include -I${JAVA_HOME}/include/$(shell uname -s | tr "[:upper:]" "[:lower:]") $(EXTINCLUDE)
+
+
+
+CFLAGS   = -c -fPIC -g -Wall -D_ALLBSD_SOURCE -D_GNU_SOURCE -D$(ARCH) $(INCLUDES) $(EXTCFLAGS)
 
-CFLAGS   = -c -fPIC -g -Wall -D_ALLBSD_SOURCE -D_GNU_SOURCE -D$(ARCH) $(INCLUDES)
 
-LIBSA = $(ARCH)/libsaproc.so
 
 all: $(LIBSA)
 
-BsdDebuggerLocal.o: BsdDebuggerLocal.c
-	$(JAVAH) -jni -classpath ../../../../../build/bsd-i586/hotspot/outputdir/bsd_i486_compiler2/generated/saclasses  \
+MacosxDebuggerLocal.o: MacosxDebuggerLocal.m
+	echo "OS="$(OS)
+	$(JAVAH) -jni -classpath ../../../build/classes  \
 		sun.jvm.hotspot.debugger.x86.X86ThreadContext \
 		sun.jvm.hotspot.debugger.amd64.AMD64ThreadContext
+	$(GCC) $(CFLAGS) $(FOUNDATIONFLAGS) $<
+
+sadis.o: ../../share/native/sadis.c
+	$(JAVAH) -jni -classpath ../../../build/classes \
+		sun.jvm.hotspot.asm.Disassembler
 	$(GCC) $(CFLAGS) $<
 
 .c.obj:
@@ -59,9 +85,9 @@ ifndef LDNOMAP
   LFLAGS_LIBSA = -Xlinker --version-script=mapfile
 endif
 
-$(LIBSA): $(OBJS) mapfile
+$(LIBSA): $(OBJSPLUS) mapfile 
 	if [ ! -d $(ARCH) ] ; then mkdir $(ARCH) ; fi
-	$(GCC) -shared $(LFLAGS_LIBSA) -o $(LIBSA) $(OBJS) $(LIBS)
+	$(GCC) -shared $(LFLAGS_LIBSA) -o $(LIBSA) $(FOUNDATIONFLAGS) $(OBJSPLUS) $(LIBS) $(SALIBS)
 
 test.o: $(LIBSA) test.c
 	$(GCC) -c -o test.o -g -D_GNU_SOURCE -D$(ARCH) $(INCLUDES) test.c
@@ -71,7 +97,6 @@ test: test.o
 
 clean:
 	rm -f $(LIBSA)
-	rm -f $(OBJS)
+	rm -f *.o
 	rm -f test.o
 	-rmdir $(ARCH)
-
diff --git a/agent/src/os/bsd/libproc.h b/agent/src/os/bsd/libproc.h
index 74bb84c17..11e00dcb8 100644
--- a/agent/src/os/bsd/libproc.h
+++ b/agent/src/os/bsd/libproc.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2007, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,9 +27,38 @@
 
 #include <unistd.h>
 #include <stdint.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+
+#ifdef __APPLE__
+typedef enum ps_err_e {
+  PS_OK, PS_ERR, PS_BADPID, PS_BADLID,
+  PS_BADADDR, PS_NOSYM, PS_NOFREGS
+} ps_err_e;
+
+#ifndef psaddr_t
+#define psaddr_t uintptr_t
+#endif
+
+#ifndef bool
+typedef int bool;
+#define true  1
+#define false 0
+#endif  // bool
+
+#ifndef lwpid_t
+#define lwpid_t uintptr_t
+#endif
+
+#include <mach/thread_status.h>
+#else   // __APPLE__
+#include <elf.h>
+#include <link.h>
 #include <machine/reg.h>
 #include <proc_service.h>
-
 #if defined(sparc) || defined(sparcv9)
 /*
   If _LP64 is defined ptrace.h should be taken from /usr/include/asm-sparc64
@@ -44,6 +73,14 @@
 
 #endif //sparc or sparcv9
 
+// This C bool type must be int for compatibility with BSD calls and
+// it would be a mistake to equivalence it to C++ bool on many platforms
+typedef int bool;
+#define true  1
+#define false 0
+
+#endif // __APPLE__
+
 /************************************************************************************
 
 0. This is very minimal subset of Solaris libproc just enough for current application.
@@ -72,13 +109,7 @@ combination of ptrace and /proc calls.
 
 *************************************************************************************/
 
-// This C bool type must be int for compatibility with BSD calls and
-// it would be a mistake to equivalence it to C++ bool on many platforms
-
-typedef int bool;
-#define true  1
-#define false 0
-
+struct reg;
 struct ps_prochandle;
 
 // attach to a process
diff --git a/agent/src/os/bsd/libproc_impl.c b/agent/src/os/bsd/libproc_impl.c
index e9fa1b82a..78da80617 100644
--- a/agent/src/os/bsd/libproc_impl.c
+++ b/agent/src/os/bsd/libproc_impl.c
@@ -21,12 +21,6 @@
  * questions.
  *
  */
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <fcntl.h>
-#include <thread_db.h>
 #include "libproc_impl.h"
 
 static const char* alt_root = NULL;
@@ -34,61 +28,65 @@ static int alt_root_len = -1;
 
 #define SA_ALTROOT "SA_ALTROOT"
 
+off_t ltell(int fd) {
+  return lseek(fd, 0, SEEK_CUR);
+}
+
 static void init_alt_root() {
-   if (alt_root_len == -1) {
-      alt_root = getenv(SA_ALTROOT);
-      if (alt_root) {
-         alt_root_len = strlen(alt_root);
-      } else {
-         alt_root_len = 0;
-      }
-   }
+  if (alt_root_len == -1) {
+    alt_root = getenv(SA_ALTROOT);
+    if (alt_root) {
+      alt_root_len = strlen(alt_root);
+    } else {
+      alt_root_len = 0;
+    }
+  }
 }
 
 int pathmap_open(const char* name) {
-   int fd;
-   char alt_path[PATH_MAX + 1];
+  int fd;
+  char alt_path[PATH_MAX + 1];
+
+  init_alt_root();
 
-   init_alt_root();
-   fd = open(name, O_RDONLY);
-   if (fd >= 0) {
+  if (alt_root_len > 0) {
+    strcpy(alt_path, alt_root);
+    strcat(alt_path, name);
+    fd = open(alt_path, O_RDONLY);
+    if (fd >= 0) {
+      print_debug("path %s substituted for %s\n", alt_path, name);
       return fd;
-   }
+    }
 
-   if (alt_root_len > 0) {
+    if (strrchr(name, '/')) {
       strcpy(alt_path, alt_root);
-      strcat(alt_path, name);
+      strcat(alt_path, strrchr(name, '/'));
       fd = open(alt_path, O_RDONLY);
       if (fd >= 0) {
-         print_debug("path %s substituted for %s\n", alt_path, name);
-         return fd;
-      }
-
-      if (strrchr(name, '/')) {
-         strcpy(alt_path, alt_root);
-         strcat(alt_path, strrchr(name, '/'));
-         fd = open(alt_path, O_RDONLY);
-         if (fd >= 0) {
-            print_debug("path %s substituted for %s\n", alt_path, name);
-            return fd;
-         }
+        print_debug("path %s substituted for %s\n", alt_path, name);
+        return fd;
       }
-   }
-
-   return -1;
+    }
+  } else {
+    fd = open(name, O_RDONLY);
+    if (fd >= 0) {
+      return fd;
+    }
+  }
+  return -1;
 }
 
 static bool _libsaproc_debug;
 
 void print_debug(const char* format,...) {
-   if (_libsaproc_debug) {
-     va_list alist;
+  if (_libsaproc_debug) {
+    va_list alist;
 
-     va_start(alist, format);
-     fputs("libsaproc DEBUG: ", stderr);
-     vfprintf(stderr, format, alist);
-     va_end(alist);
-   }
+    va_start(alist, format);
+    fputs("libsaproc DEBUG: ", stderr);
+    vfprintf(stderr, format, alist);
+    va_end(alist);
+  }
 }
 
 void print_error(const char* format,...) {
@@ -100,172 +98,235 @@ void print_error(const char* format,...) {
 }
 
 bool is_debug() {
-   return _libsaproc_debug;
+  return _libsaproc_debug;
 }
 
+#ifdef __APPLE__
+// get arch offset in file
+bool get_arch_off(int fd, cpu_type_t cputype, off_t *offset) {
+  struct fat_header fatheader;
+  struct fat_arch fatarch;
+  off_t img_start = 0;
+
+  off_t pos = ltell(fd);
+  if (read(fd, (void *)&fatheader, sizeof(struct fat_header)) != sizeof(struct fat_header)) {
+    return false;
+  }
+  if (fatheader.magic == FAT_CIGAM) {
+    int i;
+    for (i = 0; i < ntohl(fatheader.nfat_arch); i++) {
+      if (read(fd, (void *)&fatarch, sizeof(struct fat_arch)) != sizeof(struct fat_arch)) {
+        return false;
+      }
+      if (ntohl(fatarch.cputype) == cputype) {
+        print_debug("fat offset=%x\n", ntohl(fatarch.offset));
+        img_start = ntohl(fatarch.offset);
+        break;
+      }
+    }
+    if (img_start == 0) {
+      return false;
+    }
+  }
+  lseek(fd, pos, SEEK_SET);
+  *offset = img_start;
+  return true;
+}
+
+bool is_macho_file(int fd) {
+  mach_header_64 fhdr;
+  off_t x86_64_off;
+
+  if (fd < 0) {
+    print_debug("Invalid file handle passed to is_macho_file\n");
+    return false;
+  }
+
+  off_t pos = ltell(fd);
+  // check fat header
+  if (!get_arch_off(fd, CPU_TYPE_X86_64, &x86_64_off)) {
+    print_debug("failed to get fat header\n");
+    return false;
+  }
+  lseek(fd, x86_64_off, SEEK_SET);
+  if (read(fd, (void *)&fhdr, sizeof(mach_header_64)) != sizeof(mach_header_64)) {
+     return false;
+  }
+  lseek(fd, pos, SEEK_SET);               // restore
+  print_debug("fhdr.magic %x\n", fhdr.magic);
+  return (fhdr.magic == MH_MAGIC_64 || fhdr.magic == MH_CIGAM_64);
+}
+
+#endif //__APPLE__
+
 // initialize libproc
 bool init_libproc(bool debug) {
-   // init debug mode
    _libsaproc_debug = debug;
-
+#ifndef __APPLE__
    // initialize the thread_db library
    if (td_init() != TD_OK) {
      print_debug("libthread_db's td_init failed\n");
      return false;
    }
-
+#endif // __APPLE__
    return true;
 }
 
-static void destroy_lib_info(struct ps_prochandle* ph) {
-   lib_info* lib = ph->libs;
-   while (lib) {
-     lib_info *next = lib->next;
-     if (lib->symtab) {
-        destroy_symtab(lib->symtab);
-     }
-     free(lib);
-     lib = next;
-   }
+void destroy_lib_info(struct ps_prochandle* ph) {
+  lib_info* lib = ph->libs;
+  while (lib) {
+    lib_info* next = lib->next;
+    if (lib->symtab) {
+      destroy_symtab(lib->symtab);
+    }
+    free(lib);
+    lib = next;
+  }
 }
 
-static void destroy_thread_info(struct ps_prochandle* ph) {
-   thread_info* thr = ph->threads;
-   while (thr) {
-     thread_info *next = thr->next;
-     free(thr);
-     thr = next;
-   }
+void destroy_thread_info(struct ps_prochandle* ph) {
+  sa_thread_info* thr = ph->threads;
+  while (thr) {
+    sa_thread_info* n = thr->next;
+    free(thr);
+    thr = n;
+  }
 }
 
 // ps_prochandle cleanup
-
-// ps_prochandle cleanup
 void Prelease(struct ps_prochandle* ph) {
-   // do the "derived class" clean-up first
-   ph->ops->release(ph);
-   destroy_lib_info(ph);
-   destroy_thread_info(ph);
-   free(ph);
+  // do the "derived class" clean-up first
+  ph->ops->release(ph);
+  destroy_lib_info(ph);
+  destroy_thread_info(ph);
+  free(ph);
 }
 
 lib_info* add_lib_info(struct ps_prochandle* ph, const char* libname, uintptr_t base) {
-   return add_lib_info_fd(ph, libname, -1, base);
+  return add_lib_info_fd(ph, libname, -1, base);
 }
 
 lib_info* add_lib_info_fd(struct ps_prochandle* ph, const char* libname, int fd, uintptr_t base) {
    lib_info* newlib;
+  print_debug("add_lib_info_fd %s\n", libname);
 
-   if ( (newlib = (lib_info*) calloc(1, sizeof(struct lib_info))) == NULL) {
-      print_debug("can't allocate memory for lib_info\n");
-      return NULL;
-   }
+  if ( (newlib = (lib_info*) calloc(1, sizeof(struct lib_info))) == NULL) {
+    print_debug("can't allocate memory for lib_info\n");
+    return NULL;
+  }
 
-   strncpy(newlib->name, libname, sizeof(newlib->name));
-   newlib->base = base;
+  strncpy(newlib->name, libname, sizeof(newlib->name));
+  newlib->base = base;
 
-   if (fd == -1) {
-      if ( (newlib->fd = pathmap_open(newlib->name)) < 0) {
-         print_debug("can't open shared object %s\n", newlib->name);
-         free(newlib);
-         return NULL;
-      }
-   } else {
-      newlib->fd = fd;
-   }
-
-   // check whether we have got an ELF file. /proc/<pid>/map
-   // gives out all file mappings and not just shared objects
-   if (is_elf_file(newlib->fd) == false) {
-      close(newlib->fd);
+  if (fd == -1) {
+    if ( (newlib->fd = pathmap_open(newlib->name)) < 0) {
+      print_debug("can't open shared object %s\n", newlib->name);
       free(newlib);
       return NULL;
-   }
+    }
+  } else {
+    newlib->fd = fd;
+  }
 
-   newlib->symtab = build_symtab(newlib->fd);
-   if (newlib->symtab == NULL) {
-      print_debug("symbol table build failed for %s\n", newlib->name);
-   }
-   else {
-      print_debug("built symbol table for %s\n", newlib->name);
-   }
+#ifdef __APPLE__
+  // check whether we have got an Macho file.
+  if (is_macho_file(newlib->fd) == false) {
+    close(newlib->fd);
+    free(newlib);
+    print_debug("not a mach-o file\n");
+    return NULL;
+  }
+#else
+  // check whether we have got an ELF file. /proc/<pid>/map
+  // gives out all file mappings and not just shared objects
+  if (is_elf_file(newlib->fd) == false) {
+    close(newlib->fd);
+    free(newlib);
+    return NULL;
+  }
+#endif // __APPLE__
 
-   // even if symbol table building fails, we add the lib_info.
-   // This is because we may need to read from the ELF file for core file
-   // address read functionality. lookup_symbol checks for NULL symtab.
-   if (ph->libs) {
-      ph->lib_tail->next = newlib;
-      ph->lib_tail = newlib;
-   }  else {
-      ph->libs = ph->lib_tail = newlib;
-   }
-   ph->num_libs++;
+  newlib->symtab = build_symtab(newlib->fd);
+  if (newlib->symtab == NULL) {
+    print_debug("symbol table build failed for %s\n", newlib->name);
+  } else {
+    print_debug("built symbol table for %s\n", newlib->name);
+  }
 
-   return newlib;
+  // even if symbol table building fails, we add the lib_info.
+  // This is because we may need to read from the ELF file or MachO file for core file
+  // address read functionality. lookup_symbol checks for NULL symtab.
+  if (ph->libs) {
+    ph->lib_tail->next = newlib;
+    ph->lib_tail = newlib;
+  }  else {
+    ph->libs = ph->lib_tail = newlib;
+  }
+  ph->num_libs++;
+  return newlib;
 }
 
 // lookup for a specific symbol
 uintptr_t lookup_symbol(struct ps_prochandle* ph,  const char* object_name,
                        const char* sym_name) {
-   // ignore object_name. search in all libraries
-   // FIXME: what should we do with object_name?? The library names are obtained
-   // by parsing /proc/<pid>/maps, which may not be the same as object_name.
-   // What we need is a utility to map object_name to real file name, something
-   // dlopen() does by looking at LD_LIBRARY_PATH and /etc/ld.so.cache. For
-   // now, we just ignore object_name and do a global search for the symbol.
-
-   lib_info* lib = ph->libs;
-   while (lib) {
-      if (lib->symtab) {
-         uintptr_t res = search_symbol(lib->symtab, lib->base, sym_name, NULL);
-         if (res) return res;
-      }
-      lib = lib->next;
-   }
+  // ignore object_name. search in all libraries
+  // FIXME: what should we do with object_name?? The library names are obtained
+  // by parsing /proc/<pid>/maps, which may not be the same as object_name.
+  // What we need is a utility to map object_name to real file name, something
+  // dlopen() does by looking at LD_LIBRARY_PATH and /etc/ld.so.cache. For
+  // now, we just ignore object_name and do a global search for the symbol.
+
+  lib_info* lib = ph->libs;
+  while (lib) {
+    if (lib->symtab) {
+      uintptr_t res = search_symbol(lib->symtab, lib->base, sym_name, NULL);
+      if (res) return res;
+    }
+    lib = lib->next;
+  }
 
-   print_debug("lookup failed for symbol '%s' in obj '%s'\n",
+  print_debug("lookup failed for symbol '%s' in obj '%s'\n",
                           sym_name, object_name);
-   return (uintptr_t) NULL;
+  return (uintptr_t) NULL;
 }
 
-
 const char* symbol_for_pc(struct ps_prochandle* ph, uintptr_t addr, uintptr_t* poffset) {
-   const char* res = NULL;
-   lib_info* lib = ph->libs;
-   while (lib) {
-      if (lib->symtab && addr >= lib->base) {
-         res = nearest_symbol(lib->symtab, addr - lib->base, poffset);
-         if (res) return res;
-      }
-      lib = lib->next;
-   }
-   return NULL;
+  const char* res = NULL;
+  lib_info* lib = ph->libs;
+  while (lib) {
+    if (lib->symtab && addr >= lib->base) {
+      res = nearest_symbol(lib->symtab, addr - lib->base, poffset);
+      if (res) return res;
+    }
+    lib = lib->next;
+  }
+  return NULL;
 }
 
 // add a thread to ps_prochandle
-thread_info* add_thread_info(struct ps_prochandle* ph, pthread_t pthread_id, lwpid_t lwp_id) {
-   thread_info* newthr;
-   if ( (newthr = (thread_info*) calloc(1, sizeof(thread_info))) == NULL) {
-      print_debug("can't allocate memory for thread_info\n");
-      return NULL;
-   }
+sa_thread_info* add_thread_info(struct ps_prochandle* ph, pthread_t pthread_id, lwpid_t lwp_id) {
+  sa_thread_info* newthr;
+  if ( (newthr = (sa_thread_info*) calloc(1, sizeof(sa_thread_info))) == NULL) {
+    print_debug("can't allocate memory for thread_info\n");
+    return NULL;
+  }
 
-   // initialize thread info
-   newthr->pthread_id = pthread_id;
-   newthr->lwp_id = lwp_id;
+  // initialize thread info
+  newthr->pthread_id = pthread_id;
+  newthr->lwp_id = lwp_id;
 
-   // add new thread to the list
-   newthr->next = ph->threads;
-   ph->threads = newthr;
-   ph->num_threads++;
-   return newthr;
+  // add new thread to the list
+  newthr->next = ph->threads;
+  ph->threads = newthr;
+  ph->num_threads++;
+  return newthr;
 }
 
-
+#ifndef __APPLE__
 // struct used for client data from thread_db callback
 struct thread_db_client_data {
-   struct ps_prochandle* ph;
-   thread_info_callback callback;
+  struct ps_prochandle* ph;
+  thread_info_callback callback;
 };
 
 // callback function for libthread_db
@@ -314,6 +375,7 @@ bool read_thread_info(struct ps_prochandle* ph, thread_info_callback cb) {
   return true;
 }
 
+#endif // __APPLE__
 
 // get number of threads
 int get_num_threads(struct ps_prochandle* ph) {
@@ -322,18 +384,54 @@ int get_num_threads(struct ps_prochandle* ph) {
 
 // get lwp_id of n'th thread
 lwpid_t get_lwp_id(struct ps_prochandle* ph, int index) {
-   int count = 0;
-   thread_info* thr = ph->threads;
-   while (thr) {
-      if (count == index) {
-         return thr->lwp_id;
-      }
-      count++;
-      thr = thr->next;
-   }
-   return -1;
+  int count = 0;
+  sa_thread_info* thr = ph->threads;
+  while (thr) {
+    if (count == index) {
+      return thr->lwp_id;
+    }
+    count++;
+    thr = thr->next;
+  }
+  return 0;
 }
 
+#ifdef __APPLE__
+// set lwp_id of n'th thread
+bool set_lwp_id(struct ps_prochandle* ph, int index, lwpid_t lwpid) {
+  int count = 0;
+  sa_thread_info* thr = ph->threads;
+  while (thr) {
+    if (count == index) {
+      thr->lwp_id = lwpid;
+      return true;
+    }
+    count++;
+    thr = thr->next;
+  }
+  return false;
+}
+
+// get regs of n-th thread, only used in fillThreads the first time called
+bool get_nth_lwp_regs(struct ps_prochandle* ph, int index, struct reg* regs) {
+  int count = 0;
+  sa_thread_info* thr = ph->threads;
+  while (thr) {
+    if (count == index) {
+      break;
+    }
+    count++;
+    thr = thr->next;
+  }
+  if (thr != NULL) {
+    memcpy(regs, &thr->regs, sizeof(struct reg));
+    return true;
+  }
+  return false;
+}
+
+#endif // __APPLE__
+
 // get regs for a given lwp
 bool get_lwp_regs(struct ps_prochandle* ph, lwpid_t lwp_id, struct reg* regs) {
   return ph->ops->get_lwp_regs(ph, lwp_id, regs);
@@ -341,35 +439,35 @@ bool get_lwp_regs(struct ps_prochandle* ph, lwpid_t lwp_id, struct reg* regs) {
 
 // get number of shared objects
 int get_num_libs(struct ps_prochandle* ph) {
-   return ph->num_libs;
+  return ph->num_libs;
 }
 
 // get name of n'th solib
 const char* get_lib_name(struct ps_prochandle* ph, int index) {
-   int count = 0;
-   lib_info* lib = ph->libs;
-   while (lib) {
-      if (count == index) {
-         return lib->name;
-      }
-      count++;
-      lib = lib->next;
-   }
-   return NULL;
+  int count = 0;
+  lib_info* lib = ph->libs;
+  while (lib) {
+    if (count == index) {
+      return lib->name;
+    }
+    count++;
+    lib = lib->next;
+  }
+  return NULL;
 }
 
 // get base address of a lib
 uintptr_t get_lib_base(struct ps_prochandle* ph, int index) {
-   int count = 0;
-   lib_info* lib = ph->libs;
-   while (lib) {
-      if (count == index) {
-         return lib->base;
-      }
-      count++;
-      lib = lib->next;
-   }
-   return (uintptr_t)NULL;
+  int count = 0;
+  lib_info* lib = ph->libs;
+  while (lib) {
+    if (count == index) {
+      return lib->base;
+    }
+    count++;
+    lib = lib->next;
+  }
+  return (uintptr_t)NULL;
 }
 
 bool find_lib(struct ps_prochandle* ph, const char *lib_name) {
@@ -425,6 +523,7 @@ ps_plog (const char *format, ...)
   va_end(alist);
 }
 
+#ifndef __APPLE__
 // ------------------------------------------------------------------------
 // Functions below this point are not yet implemented. They are here only
 // to make the linker happy.
@@ -458,3 +557,4 @@ ps_err_e ps_pcontinue(struct ps_prochandle *ph) {
   print_debug("ps_pcontinue not implemented\n");
   return PS_OK;
 }
+#endif // __APPLE__
diff --git a/agent/src/os/bsd/libproc_impl.h b/agent/src/os/bsd/libproc_impl.h
index 12326c17f..b5cec4d39 100644
--- a/agent/src/os/bsd/libproc_impl.h
+++ b/agent/src/os/bsd/libproc_impl.h
@@ -30,6 +30,60 @@
 #include "libproc.h"
 #include "symtab.h"
 
+#ifdef __APPLE__
+#include <inttypes.h>     // for PRIx64, 32, ...
+#include <pthread.h>
+#include <mach-o/loader.h>
+#include <mach-o/nlist.h>
+#include <mach-o/fat.h>
+
+#ifndef register_t
+#define register_t uint64_t
+#endif
+
+/*** registers copied from bsd/amd64 */
+typedef struct reg {
+  register_t      r_r15;
+  register_t      r_r14;
+  register_t      r_r13;
+  register_t      r_r12;
+  register_t      r_r11;
+  register_t      r_r10;
+  register_t      r_r9;
+  register_t      r_r8;
+  register_t      r_rdi;
+  register_t      r_rsi;
+  register_t      r_rbp;
+  register_t      r_rbx;
+  register_t      r_rdx;
+  register_t      r_rcx;
+  register_t      r_rax;
+  uint32_t        r_trapno;      // not used
+  uint16_t        r_fs;
+  uint16_t        r_gs;
+  uint32_t        r_err;         // not used
+  uint16_t        r_es;          // not used
+  uint16_t        r_ds;          // not used
+  register_t      r_rip;
+  register_t      r_cs;
+  register_t      r_rflags;
+  register_t      r_rsp;
+  register_t      r_ss;          // not used
+} reg;
+
+// convenient defs
+typedef struct mach_header_64 mach_header_64;
+typedef struct load_command load_command;
+typedef struct segment_command_64 segment_command_64;
+typedef struct thread_command thread_command;
+typedef struct dylib_command dylib_command;
+typedef struct symtab_command symtab_command;
+typedef struct nlist_64 nlist_64;
+#else
+#include <thread_db.h>
+#include "salibelf.h"
+#endif //  __APPLE__
+
 // data structures in this file mimic those of Solaris 8.0 - libproc's Pcontrol.h
 
 #define BUF_SIZE     (PATH_MAX + NAME_MAX + 1)
@@ -44,12 +98,12 @@ typedef struct lib_info {
 } lib_info;
 
 // list of threads
-typedef struct thread_info {
-   lwpid_t                  lwp_id;
-   pthread_t                pthread_id; // not used cores, always -1
+typedef struct sa_thread_info {
+   lwpid_t                  lwp_id;     // same as pthread_t
+   pthread_t                pthread_id; //
    struct reg               regs;       // not for process, core uses for caching regset
-   struct thread_info*      next;
-} thread_info;
+   struct sa_thread_info*   next;
+} sa_thread_info;
 
 // list of virtual memory maps
 typedef struct map_info {
@@ -91,6 +145,7 @@ struct core_data {
    // part of the class sharing workaround
    map_info*          class_share_maps;// class share maps in a linked list
    map_info**         map_array; // sorted (by vaddr) array of map_info pointers
+   char               exec_path[4096];  // file name java
 };
 
 struct ps_prochandle {
@@ -100,12 +155,11 @@ struct ps_prochandle {
    lib_info*          libs;      // head of lib list
    lib_info*          lib_tail;  // tail of lib list - to append at the end
    int                num_threads;
-   thread_info*       threads;   // head of thread list
+   sa_thread_info*    threads;   // head of thread list
    struct core_data*  core;      // data only used for core dumps, NULL for process
 };
 
 int pathmap_open(const char* name);
-
 void print_debug(const char* format,...);
 void print_error(const char* format,...);
 bool is_debug();
@@ -122,10 +176,45 @@ lib_info* add_lib_info(struct ps_prochandle* ph, const char* libname, uintptr_t
 lib_info* add_lib_info_fd(struct ps_prochandle* ph, const char* libname, int fd,
                           uintptr_t base);
 
-// adds a new thread to threads list, returns NULL on failure
-thread_info* add_thread_info(struct ps_prochandle* ph, pthread_t pthread_id, lwpid_t lwp_id);
-
+sa_thread_info* add_thread_info(struct ps_prochandle* ph, pthread_t pthread_id, lwpid_t lwp_id);
 // a test for ELF signature without using libelf
+
+#ifdef __APPLE__
+// a test for Mach-O signature
+bool is_macho_file(int fd);
+// skip fat head to get image start offset of cpu_type_t
+// return false if any error happens, else value in offset.
+bool get_arch_off(int fd, cpu_type_t cputype, off_t *offset);
+#else
 bool is_elf_file(int fd);
+#endif // __APPLE__
+
+lwpid_t get_lwp_id(struct ps_prochandle* ph, int index);
+bool set_lwp_id(struct ps_prochandle* ph, int index, lwpid_t lwpid);
+bool get_nth_lwp_regs(struct ps_prochandle* ph, int index, struct reg* regs);
+
+// ps_pglobal_lookup() looks up the symbol sym_name in the symbol table
+// of the load object object_name in the target process identified by ph.
+// It returns the symbol's value as an address in the target process in
+// *sym_addr.
+
+ps_err_e ps_pglobal_lookup(struct ps_prochandle *ph, const char *object_name,
+                    const char *sym_name, psaddr_t *sym_addr);
+
+// read "size" bytes info "buf" from address "addr"
+ps_err_e ps_pread(struct ps_prochandle *ph, psaddr_t  addr,
+                  void *buf, size_t size);
+
+// write "size" bytes of data to debuggee at address "addr"
+ps_err_e ps_pwrite(struct ps_prochandle *ph, psaddr_t addr,
+                   const void *buf, size_t size);
+
+// fill in ptrace_lwpinfo for lid
+ps_err_e ps_linfo(struct ps_prochandle *ph, lwpid_t lwp_id, void *linfo);
+
+// needed for when libthread_db is compiled with TD_DEBUG defined
+void ps_plog (const char *format, ...);
 
+// untility, tells the position in file
+off_t ltell(int fd);
 #endif //_LIBPROC_IMPL_H_
diff --git a/agent/src/os/bsd/ps_core.c b/agent/src/os/bsd/ps_core.c
index b00a03c57..974e01a6a 100644
--- a/agent/src/os/bsd/ps_core.c
+++ b/agent/src/os/bsd/ps_core.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -28,10 +28,11 @@
 #include <string.h>
 #include <stdlib.h>
 #include <stddef.h>
-#include <elf.h>
-#include <link.h>
 #include "libproc_impl.h"
-#include "salibelf.h"
+
+#ifdef __APPLE__
+#include "sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext.h"
+#endif
 
 // This file has the libproc implementation to read core files.
 // For live processes, refer to ps_proc.c. Portions of this is adapted
@@ -41,156 +42,158 @@
 // ps_prochandle cleanup helper functions
 
 // close all file descriptors
-static void close_elf_files(struct ps_prochandle* ph) {
-   lib_info* lib = NULL;
-
-   // close core file descriptor
-   if (ph->core->core_fd >= 0)
-     close(ph->core->core_fd);
-
-   // close exec file descriptor
-   if (ph->core->exec_fd >= 0)
-     close(ph->core->exec_fd);
-
-   // close interp file descriptor
-   if (ph->core->interp_fd >= 0)
-     close(ph->core->interp_fd);
-
-   // close class share archive file
-   if (ph->core->classes_jsa_fd >= 0)
-     close(ph->core->classes_jsa_fd);
-
-   // close all library file descriptors
-   lib = ph->libs;
-   while (lib) {
-      int fd = lib->fd;
-      if (fd >= 0 && fd != ph->core->exec_fd) close(fd);
-      lib = lib->next;
-   }
+static void close_files(struct ps_prochandle* ph) {
+  lib_info* lib = NULL;
+  // close core file descriptor
+  if (ph->core->core_fd >= 0)
+    close(ph->core->core_fd);
+
+  // close exec file descriptor
+  if (ph->core->exec_fd >= 0)
+    close(ph->core->exec_fd);
+
+  // close interp file descriptor
+  if (ph->core->interp_fd >= 0)
+    close(ph->core->interp_fd);
+
+  // close class share archive file
+  if (ph->core->classes_jsa_fd >= 0)
+    close(ph->core->classes_jsa_fd);
+
+  // close all library file descriptors
+  lib = ph->libs;
+  while (lib) {
+    int fd = lib->fd;
+    if (fd >= 0 && fd != ph->core->exec_fd) {
+      close(fd);
+    }
+    lib = lib->next;
+  }
 }
 
 // clean all map_info stuff
 static void destroy_map_info(struct ps_prochandle* ph) {
   map_info* map = ph->core->maps;
   while (map) {
-     map_info* next = map->next;
-     free(map);
-     map = next;
+    map_info* next = map->next;
+    free(map);
+    map = next;
   }
 
   if (ph->core->map_array) {
-     free(ph->core->map_array);
+    free(ph->core->map_array);
   }
 
   // Part of the class sharing workaround
   map = ph->core->class_share_maps;
   while (map) {
-     map_info* next = map->next;
-     free(map);
-     map = next;
+    map_info* next = map->next;
+    free(map);
+    map = next;
   }
 }
 
 // ps_prochandle operations
 static void core_release(struct ps_prochandle* ph) {
-   if (ph->core) {
-      close_elf_files(ph);
-      destroy_map_info(ph);
-      free(ph->core);
-   }
+  if (ph->core) {
+    close_files(ph);
+    destroy_map_info(ph);
+    free(ph->core);
+  }
 }
 
 static map_info* allocate_init_map(int fd, off_t offset, uintptr_t vaddr, size_t memsz) {
-   map_info* map;
-   if ( (map = (map_info*) calloc(1, sizeof(map_info))) == NULL) {
-      print_debug("can't allocate memory for map_info\n");
-      return NULL;
-   }
+  map_info* map;
+  if ( (map = (map_info*) calloc(1, sizeof(map_info))) == NULL) {
+    print_debug("can't allocate memory for map_info\n");
+    return NULL;
+  }
 
-   // initialize map
-   map->fd     = fd;
-   map->offset = offset;
-   map->vaddr  = vaddr;
-   map->memsz  = memsz;
-   return map;
+  // initialize map
+  map->fd     = fd;
+  map->offset = offset;
+  map->vaddr  = vaddr;
+  map->memsz  = memsz;
+  return map;
 }
 
 // add map info with given fd, offset, vaddr and memsz
 static map_info* add_map_info(struct ps_prochandle* ph, int fd, off_t offset,
                              uintptr_t vaddr, size_t memsz) {
-   map_info* map;
-   if ((map = allocate_init_map(fd, offset, vaddr, memsz)) == NULL) {
-      return NULL;
-   }
+  map_info* map;
+  if ((map = allocate_init_map(fd, offset, vaddr, memsz)) == NULL) {
+    return NULL;
+  }
 
-   // add this to map list
-   map->next  = ph->core->maps;
-   ph->core->maps   = map;
-   ph->core->num_maps++;
+  // add this to map list
+  map->next  = ph->core->maps;
+  ph->core->maps   = map;
+  ph->core->num_maps++;
 
-   return map;
+  return map;
 }
 
 // Part of the class sharing workaround
 static map_info* add_class_share_map_info(struct ps_prochandle* ph, off_t offset,
                              uintptr_t vaddr, size_t memsz) {
-   map_info* map;
-   if ((map = allocate_init_map(ph->core->classes_jsa_fd,
-                                offset, vaddr, memsz)) == NULL) {
-      return NULL;
-   }
+  map_info* map;
+  if ((map = allocate_init_map(ph->core->classes_jsa_fd,
+                               offset, vaddr, memsz)) == NULL) {
+    return NULL;
+  }
 
-   map->next = ph->core->class_share_maps;
-   ph->core->class_share_maps = map;
-   return map;
+  map->next = ph->core->class_share_maps;
+  ph->core->class_share_maps = map;
+  return map;
 }
 
 // Return the map_info for the given virtual address.  We keep a sorted
 // array of pointers in ph->map_array, so we can binary search.
 static map_info* core_lookup(struct ps_prochandle *ph, uintptr_t addr)
 {
-   int mid, lo = 0, hi = ph->core->num_maps - 1;
-   map_info *mp;
-
-   while (hi - lo > 1) {
-     mid = (lo + hi) / 2;
-      if (addr >= ph->core->map_array[mid]->vaddr)
-         lo = mid;
-      else
-         hi = mid;
-   }
+  int mid, lo = 0, hi = ph->core->num_maps - 1;
+  map_info *mp;
+
+  while (hi - lo > 1) {
+    mid = (lo + hi) / 2;
+    if (addr >= ph->core->map_array[mid]->vaddr) {
+      lo = mid;
+    } else {
+      hi = mid;
+    }
+  }
 
-   if (addr < ph->core->map_array[hi]->vaddr)
-      mp = ph->core->map_array[lo];
-   else
-      mp = ph->core->map_array[hi];
+  if (addr < ph->core->map_array[hi]->vaddr) {
+    mp = ph->core->map_array[lo];
+  } else {
+    mp = ph->core->map_array[hi];
+  }
 
-   if (addr >= mp->vaddr && addr < mp->vaddr + mp->memsz)
-      return (mp);
+  if (addr >= mp->vaddr && addr < mp->vaddr + mp->memsz) {
+    return (mp);
+  }
 
 
-   // Part of the class sharing workaround
-   // Unfortunately, we have no way of detecting -Xshare state.
-   // Check out the share maps atlast, if we don't find anywhere.
-   // This is done this way so to avoid reading share pages
-   // ahead of other normal maps. For eg. with -Xshare:off we don't
-   // want to prefer class sharing data to data from core.
-   mp = ph->core->class_share_maps;
-   if (mp) {
-      print_debug("can't locate map_info at 0x%lx, trying class share maps\n",
-             addr);
-   }
-   while (mp) {
-      if (addr >= mp->vaddr && addr < mp->vaddr + mp->memsz) {
-         print_debug("located map_info at 0x%lx from class share maps\n",
-                  addr);
-         return (mp);
-      }
-      mp = mp->next;
-   }
+  // Part of the class sharing workaround
+  // Unfortunately, we have no way of detecting -Xshare state.
+  // Check out the share maps atlast, if we don't find anywhere.
+  // This is done this way so to avoid reading share pages
+  // ahead of other normal maps. For eg. with -Xshare:off we don't
+  // want to prefer class sharing data to data from core.
+  mp = ph->core->class_share_maps;
+  if (mp) {
+    print_debug("can't locate map_info at 0x%lx, trying class share maps\n", addr);
+  }
+  while (mp) {
+    if (addr >= mp->vaddr && addr < mp->vaddr + mp->memsz) {
+      print_debug("located map_info at 0x%lx from class share maps\n", addr);
+      return (mp);
+    }
+    mp = mp->next;
+  }
 
-   print_debug("can't locate map_info at 0x%lx\n", addr);
-   return (NULL);
+  print_debug("can't locate map_info at 0x%lx\n", addr);
+  return (NULL);
 }
 
 //---------------------------------------------------------------
@@ -239,157 +242,171 @@ struct FileMapHeader {
 };
 
 static bool read_jboolean(struct ps_prochandle* ph, uintptr_t addr, jboolean* pvalue) {
-   jboolean i;
-   if (ps_pread(ph, (psaddr_t) addr, &i, sizeof(i)) == PS_OK) {
-      *pvalue = i;
-      return true;
-   } else {
-      return false;
-   }
+  jboolean i;
+  if (ps_pread(ph, (psaddr_t) addr, &i, sizeof(i)) == PS_OK) {
+    *pvalue = i;
+    return true;
+  } else {
+    return false;
+  }
 }
 
 static bool read_pointer(struct ps_prochandle* ph, uintptr_t addr, uintptr_t* pvalue) {
-   uintptr_t uip;
-   if (ps_pread(ph, (psaddr_t) addr, &uip, sizeof(uip)) == PS_OK) {
-      *pvalue = uip;
-      return true;
-   } else {
-      return false;
-   }
+  uintptr_t uip;
+  if (ps_pread(ph, (psaddr_t) addr, (char *)&uip, sizeof(uip)) == PS_OK) {
+    *pvalue = uip;
+    return true;
+  } else {
+    return false;
+  }
 }
 
 // used to read strings from debuggee
 static bool read_string(struct ps_prochandle* ph, uintptr_t addr, char* buf, size_t size) {
-   size_t i = 0;
-   char  c = ' ';
-
-   while (c != '\0') {
-     if (ps_pread(ph, (psaddr_t) addr, &c, sizeof(char)) != PS_OK)
-         return false;
-      if (i < size - 1)
-         buf[i] = c;
-      else // smaller buffer
-         return false;
-      i++; addr++;
-   }
+  size_t i = 0;
+  char  c = ' ';
 
-   buf[i] = '\0';
-   return true;
+  while (c != '\0') {
+    if (ps_pread(ph, (psaddr_t) addr, &c, sizeof(char)) != PS_OK) {
+      return false;
+    }
+    if (i < size - 1) {
+      buf[i] = c;
+    } else {
+      // smaller buffer
+      return false;
+    }
+    i++; addr++;
+  }
+  buf[i] = '\0';
+  return true;
 }
 
-#define USE_SHARED_SPACES_SYM "UseSharedSpaces"
+#ifdef __APPLE__
+#define USE_SHARED_SPACES_SYM "_UseSharedSpaces"
 // mangled name of Arguments::SharedArchivePath
 #define SHARED_ARCHIVE_PATH_SYM "_ZN9Arguments17SharedArchivePathE"
+#else
+#define USE_SHARED_SPACES_SYM "UseSharedSpaces"
+// mangled name of Arguments::SharedArchivePath
+#define SHARED_ARCHIVE_PATH_SYM "__ZN9Arguments17SharedArchivePathE"
+#endif // __APPLE_
 
 static bool init_classsharing_workaround(struct ps_prochandle* ph) {
-   lib_info* lib = ph->libs;
-   while (lib != NULL) {
-      // we are iterating over shared objects from the core dump. look for
-      // libjvm[_g].so.
-      const char *jvm_name = 0;
-      if ((jvm_name = strstr(lib->name, "/libjvm.so")) != 0 ||
-          (jvm_name = strstr(lib->name, "/libjvm_g.so")) != 0) {
-         char classes_jsa[PATH_MAX];
-         struct FileMapHeader header;
-         size_t n = 0;
-         int fd = -1, m = 0;
-         uintptr_t base = 0, useSharedSpacesAddr = 0;
-         uintptr_t sharedArchivePathAddrAddr = 0, sharedArchivePathAddr = 0;
-         jboolean useSharedSpaces = 0;
-
-         memset(classes_jsa, 0, sizeof(classes_jsa));
-         jvm_name = lib->name;
-         useSharedSpacesAddr = lookup_symbol(ph, jvm_name, USE_SHARED_SPACES_SYM);
-         if (useSharedSpacesAddr == 0) {
-            print_debug("can't lookup 'UseSharedSpaces' flag\n");
-            return false;
-         }
+  int m;
+  size_t n;
+  lib_info* lib = ph->libs;
+  while (lib != NULL) {
+    // we are iterating over shared objects from the core dump. look for
+    // libjvm[_g].so.
+    const char *jvm_name = 0;
+#ifdef __APPLE__
+    if ((jvm_name = strstr(lib->name, "/libjvm.dylib")) != 0 ||
+        (jvm_name = strstr(lib->name, "/libjvm_g.dylib")) != 0)
+#else
+    if ((jvm_name = strstr(lib->name, "/libjvm.so")) != 0 ||
+        (jvm_name = strstr(lib->name, "/libjvm_g.so")) != 0)
+#endif // __APPLE__
+    {
+      char classes_jsa[PATH_MAX];
+      struct FileMapHeader header;
+      int fd = -1;
+      uintptr_t base = 0, useSharedSpacesAddr = 0;
+      uintptr_t sharedArchivePathAddrAddr = 0, sharedArchivePathAddr = 0;
+      jboolean useSharedSpaces = 0;
+
+      memset(classes_jsa, 0, sizeof(classes_jsa));
+      jvm_name = lib->name;
+      useSharedSpacesAddr = lookup_symbol(ph, jvm_name, USE_SHARED_SPACES_SYM);
+      if (useSharedSpacesAddr == 0) {
+        print_debug("can't lookup 'UseSharedSpaces' flag\n");
+        return false;
+      }
 
-         // Hotspot vm types are not exported to build this library. So
-         // using equivalent type jboolean to read the value of
-         // UseSharedSpaces which is same as hotspot type "bool".
-         if (read_jboolean(ph, useSharedSpacesAddr, &useSharedSpaces) != true) {
-            print_debug("can't read the value of 'UseSharedSpaces' flag\n");
-            return false;
-         }
+      // Hotspot vm types are not exported to build this library. So
+      // using equivalent type jboolean to read the value of
+      // UseSharedSpaces which is same as hotspot type "bool".
+      if (read_jboolean(ph, useSharedSpacesAddr, &useSharedSpaces) != true) {
+        print_debug("can't read the value of 'UseSharedSpaces' flag\n");
+        return false;
+      }
 
-         if ((int)useSharedSpaces == 0) {
-            print_debug("UseSharedSpaces is false, assuming -Xshare:off!\n");
-            return true;
-         }
+      if ((int)useSharedSpaces == 0) {
+        print_debug("UseSharedSpaces is false, assuming -Xshare:off!\n");
+        return true;
+      }
 
-         sharedArchivePathAddrAddr = lookup_symbol(ph, jvm_name, SHARED_ARCHIVE_PATH_SYM);
-         if (sharedArchivePathAddrAddr == 0) {
-            print_debug("can't lookup shared archive path symbol\n");
-            return false;
-         }
+      sharedArchivePathAddrAddr = lookup_symbol(ph, jvm_name, SHARED_ARCHIVE_PATH_SYM);
+      if (sharedArchivePathAddrAddr == 0) {
+        print_debug("can't lookup shared archive path symbol\n");
+        return false;
+      }
 
-         if (read_pointer(ph, sharedArchivePathAddrAddr, &sharedArchivePathAddr) != true) {
-            print_debug("can't read shared archive path pointer\n");
-            return false;
-         }
+      if (read_pointer(ph, sharedArchivePathAddrAddr, &sharedArchivePathAddr) != true) {
+        print_debug("can't read shared archive path pointer\n");
+        return false;
+      }
 
-         if (read_string(ph, sharedArchivePathAddr, classes_jsa, sizeof(classes_jsa)) != true) {
-            print_debug("can't read shared archive path value\n");
-            return false;
-         }
+      if (read_string(ph, sharedArchivePathAddr, classes_jsa, sizeof(classes_jsa)) != true) {
+        print_debug("can't read shared archive path value\n");
+        return false;
+      }
 
-         print_debug("looking for %s\n", classes_jsa);
-         // open the class sharing archive file
-         fd = pathmap_open(classes_jsa);
-         if (fd < 0) {
-            print_debug("can't open %s!\n", classes_jsa);
-            ph->core->classes_jsa_fd = -1;
-            return false;
-         } else {
-            print_debug("opened %s\n", classes_jsa);
-         }
+      print_debug("looking for %s\n", classes_jsa);
+      // open the class sharing archive file
+      fd = pathmap_open(classes_jsa);
+      if (fd < 0) {
+        print_debug("can't open %s!\n", classes_jsa);
+        ph->core->classes_jsa_fd = -1;
+        return false;
+      } else {
+        print_debug("opened %s\n", classes_jsa);
+      }
 
-         // read FileMapHeader from the file
-         memset(&header, 0, sizeof(struct FileMapHeader));
-         if ((n = read(fd, &header, sizeof(struct FileMapHeader)))
-              != sizeof(struct FileMapHeader)) {
-            print_debug("can't read shared archive file map header from %s\n", classes_jsa);
-            close(fd);
-            return false;
-         }
+      // read FileMapHeader from the file
+      memset(&header, 0, sizeof(struct FileMapHeader));
+      if ((n = read(fd, &header, sizeof(struct FileMapHeader)))
+           != sizeof(struct FileMapHeader)) {
+        print_debug("can't read shared archive file map header from %s\n", classes_jsa);
+        close(fd);
+        return false;
+      }
 
-         // check file magic
-         if (header._magic != 0xf00baba2) {
-            print_debug("%s has bad shared archive file magic number 0x%x, expecing 0xf00baba2\n",
-                        classes_jsa, header._magic);
-            close(fd);
-            return false;
-         }
+      // check file magic
+      if (header._magic != 0xf00baba2) {
+        print_debug("%s has bad shared archive file magic number 0x%x, expecing 0xf00baba2\n",
+                     classes_jsa, header._magic);
+        close(fd);
+        return false;
+      }
 
-         // check version
-         if (header._version != CURRENT_ARCHIVE_VERSION) {
-            print_debug("%s has wrong shared archive file version %d, expecting %d\n",
-                        classes_jsa, header._version, CURRENT_ARCHIVE_VERSION);
-            close(fd);
-            return false;
-         }
+      // check version
+      if (header._version != CURRENT_ARCHIVE_VERSION) {
+        print_debug("%s has wrong shared archive file version %d, expecting %d\n",
+                     classes_jsa, header._version, CURRENT_ARCHIVE_VERSION);
+        close(fd);
+        return false;
+      }
 
-         ph->core->classes_jsa_fd = fd;
-         // add read-only maps from classes[_g].jsa to the list of maps
-         for (m = 0; m < NUM_SHARED_MAPS; m++) {
-            if (header._space[m]._read_only) {
-               base = (uintptr_t) header._space[m]._base;
-               // no need to worry about the fractional pages at-the-end.
-               // possible fractional pages are handled by core_read_data.
-               add_class_share_map_info(ph, (off_t) header._space[m]._file_offset,
-                         base, (size_t) header._space[m]._used);
-               print_debug("added a share archive map at 0x%lx\n", base);
-            }
-         }
-         return true;
+      ph->core->classes_jsa_fd = fd;
+      // add read-only maps from classes[_g].jsa to the list of maps
+      for (m = 0; m < NUM_SHARED_MAPS; m++) {
+        if (header._space[m]._read_only) {
+          base = (uintptr_t) header._space[m]._base;
+          // no need to worry about the fractional pages at-the-end.
+          // possible fractional pages are handled by core_read_data.
+          add_class_share_map_info(ph, (off_t) header._space[m]._file_offset,
+                                   base, (size_t) header._space[m]._used);
+          print_debug("added a share archive map at 0x%lx\n", base);
+        }
       }
-      lib = lib->next;
-   }
-   return true;
+      return true;
+    }
+    lib = lib->next;
+  }
+  return true;
 }
 
-
 //---------------------------------------------------------------------------
 // functions to handle map_info
 
@@ -397,54 +414,57 @@ static bool init_classsharing_workaround(struct ps_prochandle* ph) {
 // callback for sorting the array of map_info pointers.
 static int core_cmp_mapping(const void *lhsp, const void *rhsp)
 {
-   const map_info *lhs = *((const map_info **)lhsp);
-   const map_info *rhs = *((const map_info **)rhsp);
+  const map_info *lhs = *((const map_info **)lhsp);
+  const map_info *rhs = *((const map_info **)rhsp);
 
-   if (lhs->vaddr == rhs->vaddr)
-      return (0);
+  if (lhs->vaddr == rhs->vaddr) {
+    return (0);
+  }
 
-   return (lhs->vaddr < rhs->vaddr ? -1 : 1);
+  return (lhs->vaddr < rhs->vaddr ? -1 : 1);
 }
 
 // we sort map_info by starting virtual address so that we can do
 // binary search to read from an address.
 static bool sort_map_array(struct ps_prochandle* ph) {
-   size_t num_maps = ph->core->num_maps;
-   map_info* map = ph->core->maps;
-   int i = 0;
-
-   // allocate map_array
-   map_info** array;
-   if ( (array = (map_info**) malloc(sizeof(map_info*) * num_maps)) == NULL) {
-      print_debug("can't allocate memory for map array\n");
-      return false;
-   }
+  size_t num_maps = ph->core->num_maps;
+  map_info* map = ph->core->maps;
+  int i = 0;
 
-   // add maps to array
-   while (map) {
-      array[i] = map;
-      i++;
-      map = map->next;
-   }
+  // allocate map_array
+  map_info** array;
+  if ( (array = (map_info**) malloc(sizeof(map_info*) * num_maps)) == NULL) {
+     print_debug("can't allocate memory for map array\n");
+     return false;
+  }
 
-   // sort is called twice. If this is second time, clear map array
-   if (ph->core->map_array) free(ph->core->map_array);
-   ph->core->map_array = array;
-   // sort the map_info array by base virtual address.
-   qsort(ph->core->map_array, ph->core->num_maps, sizeof (map_info*),
-            core_cmp_mapping);
+  // add maps to array
+  while (map) {
+    array[i] = map;
+    i++;
+    map = map->next;
+  }
 
-   // print map
-   if (is_debug()) {
-      int j = 0;
-      print_debug("---- sorted virtual address map ----\n");
-      for (j = 0; j < ph->core->num_maps; j++) {
-        print_debug("base = 0x%lx\tsize = %d\n", ph->core->map_array[j]->vaddr,
-                                         ph->core->map_array[j]->memsz);
-      }
-   }
+  // sort is called twice. If this is second time, clear map array
+  if (ph->core->map_array) {
+    free(ph->core->map_array);
+  }
+  ph->core->map_array = array;
+  // sort the map_info array by base virtual address.
+  qsort(ph->core->map_array, ph->core->num_maps, sizeof (map_info*),
+           core_cmp_mapping);
+
+  // print map
+  if (is_debug()) {
+    int j = 0;
+    print_debug("---- sorted virtual address map ----\n");
+    for (j = 0; j < ph->core->num_maps; j++) {
+      print_debug("base = 0x%lx\tsize = %d\n", ph->core->map_array[j]->vaddr,
+                                       ph->core->map_array[j]->memsz);
+    }
+  }
 
-   return true;
+  return true;
 }
 
 #ifndef MIN
@@ -461,16 +481,18 @@ static bool core_read_data(struct ps_prochandle* ph, uintptr_t addr, char *buf,
       off_t off;
       int fd;
 
-      if (mp == NULL)
+      if (mp == NULL) {
          break;  /* No mapping for this address */
+      }
 
       fd = mp->fd;
       mapoff = addr - mp->vaddr;
       len = MIN(resid, mp->memsz - mapoff);
       off = mp->offset + mapoff;
 
-      if ((len = pread(fd, buf, len, off)) <= 0)
+      if ((len = pread(fd, buf, len, off)) <= 0) {
          break;
+      }
 
       resid -= len;
       addr += len;
@@ -507,8 +529,8 @@ static bool core_write_data(struct ps_prochandle* ph,
 
 static bool core_get_lwp_regs(struct ps_prochandle* ph, lwpid_t lwp_id,
                           struct reg* regs) {
-   // for core we have cached the lwp regs from NOTE section
-   thread_info* thr = ph->threads;
+   // for core we have cached the lwp regs after segment parsed
+   sa_thread_info* thr = ph->threads;
    while (thr) {
      if (thr->lwp_id == lwp_id) {
        memcpy(regs, &thr->regs, sizeof(struct reg));
@@ -519,7 +541,7 @@ static bool core_get_lwp_regs(struct ps_prochandle* ph, lwpid_t lwp_id,
    return false;
 }
 
-static bool core_get_lwp_info(struct ps_prochandle *ph, lwpid_t lwp_id, void *linfo) {
+static bool core_get_lwp_info(struct ps_prochandle *ph, lwpid_t id, void *info) {
    print_debug("core_get_lwp_info not implemented\n");
    return false;
 }
@@ -532,12 +554,451 @@ static ps_prochandle_ops core_ops = {
    .get_lwp_info= core_get_lwp_info
 };
 
-// read regs and create thread from NT_PRSTATUS entries from core file
+// from this point, mainly two blocks divided by def __APPLE__
+// one for Macosx, the other for regular Bsd
+
+#ifdef __APPLE__
+
+void print_thread(sa_thread_info *threadinfo) {
+  print_debug("thread added: %d\n", threadinfo->lwp_id);
+  print_debug("registers:\n");
+  print_debug("  r_r15: 0x%" PRIx64 "\n", threadinfo->regs.r_r15);
+  print_debug("  r_r14: 0x%" PRIx64 "\n", threadinfo->regs.r_r14);
+  print_debug("  r_r13: 0x%" PRIx64 "\n", threadinfo->regs.r_r13);
+  print_debug("  r_r12: 0x%" PRIx64 "\n", threadinfo->regs.r_r12);
+  print_debug("  r_r11: 0x%" PRIx64 "\n", threadinfo->regs.r_r11);
+  print_debug("  r_r10: 0x%" PRIx64 "\n", threadinfo->regs.r_r10);
+  print_debug("  r_r9:  0x%" PRIx64 "\n", threadinfo->regs.r_r9);
+  print_debug("  r_r8:  0x%" PRIx64 "\n", threadinfo->regs.r_r8);
+  print_debug("  r_rdi: 0x%" PRIx64 "\n", threadinfo->regs.r_rdi);
+  print_debug("  r_rsi: 0x%" PRIx64 "\n", threadinfo->regs.r_rsi);
+  print_debug("  r_rbp: 0x%" PRIx64 "\n", threadinfo->regs.r_rbp);
+  print_debug("  r_rbx: 0x%" PRIx64 "\n", threadinfo->regs.r_rbx);
+  print_debug("  r_rdx: 0x%" PRIx64 "\n", threadinfo->regs.r_rdx);
+  print_debug("  r_rcx: 0x%" PRIx64 "\n", threadinfo->regs.r_rcx);
+  print_debug("  r_rax: 0x%" PRIx64 "\n", threadinfo->regs.r_rax);
+  print_debug("  r_fs:  0x%" PRIx32 "\n", threadinfo->regs.r_fs);
+  print_debug("  r_gs:  0x%" PRIx32 "\n", threadinfo->regs.r_gs);
+  print_debug("  r_rip  0x%" PRIx64 "\n", threadinfo->regs.r_rip);
+  print_debug("  r_cs:  0x%" PRIx64 "\n", threadinfo->regs.r_cs);
+  print_debug("  r_rsp: 0x%" PRIx64 "\n", threadinfo->regs.r_rsp);
+  print_debug("  r_rflags: 0x%" PRIx64 "\n", threadinfo->regs.r_rflags);
+}
+
+// read all segments64 commands from core file
+// read all thread commands from core file
+static bool read_core_segments(struct ps_prochandle* ph) {
+  int i = 0;
+  int num_threads = 0;
+  int fd = ph->core->core_fd;
+  off_t offset = 0;
+  mach_header_64      fhead;
+  load_command        lcmd;
+  segment_command_64  segcmd;
+  // thread_command      thrcmd;
+
+  lseek(fd, offset, SEEK_SET);
+  if(read(fd, (void *)&fhead, sizeof(mach_header_64)) != sizeof(mach_header_64)) {
+     goto err;
+  }
+  print_debug("total commands: %d\n", fhead.ncmds);
+  offset += sizeof(mach_header_64);
+  for (i = 0; i < fhead.ncmds; i++) {
+    lseek(fd, offset, SEEK_SET);
+    if (read(fd, (void *)&lcmd, sizeof(load_command)) != sizeof(load_command)) {
+      goto err;
+    }
+    offset += lcmd.cmdsize;    // next command position
+    if (lcmd.cmd == LC_SEGMENT_64) {
+      lseek(fd, -sizeof(load_command), SEEK_CUR);
+      if (read(fd, (void *)&segcmd, sizeof(segment_command_64)) != sizeof(segment_command_64)) {
+        print_debug("failed to read LC_SEGMENT_64 i = %d!\n", i);
+        goto err;
+      }
+      if (add_map_info(ph, fd, segcmd.fileoff, segcmd.vmaddr, segcmd.vmsize) == NULL) {
+        print_debug("Failed to add map_info at i = %d\n", i);
+        goto err;
+      }
+      print_debug("segment added: %" PRIu64 " 0x%" PRIx64 " %d\n",
+                   segcmd.fileoff, segcmd.vmaddr, segcmd.vmsize);
+    } else if (lcmd.cmd == LC_THREAD || lcmd.cmd == LC_UNIXTHREAD) {
+      typedef struct thread_fc {
+        uint32_t  flavor;
+        uint32_t  count;
+      } thread_fc;
+      thread_fc fc;
+      uint32_t size = sizeof(load_command);
+      while (size < lcmd.cmdsize) {
+        if (read(fd, (void *)&fc, sizeof(thread_fc)) != sizeof(thread_fc)) {
+          printf("Reading flavor, count failed.\n");
+          goto err;
+        }
+        size += sizeof(thread_fc);
+        if (fc.flavor == x86_THREAD_STATE) {
+          x86_thread_state_t thrstate;
+          if (read(fd, (void *)&thrstate, sizeof(x86_thread_state_t)) != sizeof(x86_thread_state_t)) {
+            printf("Reading flavor, count failed.\n");
+            goto err;
+          }
+          size += sizeof(x86_thread_state_t);
+          // create thread info list, update lwp_id later
+          sa_thread_info* newthr = add_thread_info(ph, (pthread_t) -1, (lwpid_t) num_threads++);
+          if (newthr == NULL) {
+            printf("create thread_info failed\n");
+            goto err;
+          }
+
+          // note __DARWIN_UNIX03 depengs on other definitions
+#if __DARWIN_UNIX03
+#define get_register_v(regst, regname) \
+  regst.uts.ts64.__##regname
+#else
+#define get_register_v(regst, regname) \
+  regst.uts.ts64.##regname
+#endif // __DARWIN_UNIX03
+          newthr->regs.r_rax = get_register_v(thrstate, rax);
+          newthr->regs.r_rbx = get_register_v(thrstate, rbx);
+          newthr->regs.r_rcx = get_register_v(thrstate, rcx);
+          newthr->regs.r_rdx = get_register_v(thrstate, rdx);
+          newthr->regs.r_rdi = get_register_v(thrstate, rdi);
+          newthr->regs.r_rsi = get_register_v(thrstate, rsi);
+          newthr->regs.r_rbp = get_register_v(thrstate, rbp);
+          newthr->regs.r_rsp = get_register_v(thrstate, rsp);
+          newthr->regs.r_r8  = get_register_v(thrstate, r8);
+          newthr->regs.r_r9  = get_register_v(thrstate, r9);
+          newthr->regs.r_r10 = get_register_v(thrstate, r10);
+          newthr->regs.r_r11 = get_register_v(thrstate, r11);
+          newthr->regs.r_r12 = get_register_v(thrstate, r12);
+          newthr->regs.r_r13 = get_register_v(thrstate, r13);
+          newthr->regs.r_r14 = get_register_v(thrstate, r14);
+          newthr->regs.r_r15 = get_register_v(thrstate, r15);
+          newthr->regs.r_rip = get_register_v(thrstate, rip);
+          newthr->regs.r_rflags = get_register_v(thrstate, rflags);
+          newthr->regs.r_cs  = get_register_v(thrstate, cs);
+          newthr->regs.r_fs  = get_register_v(thrstate, fs);
+          newthr->regs.r_gs  = get_register_v(thrstate, gs);
+          print_thread(newthr);
+        } else if (fc.flavor == x86_FLOAT_STATE) {
+          x86_float_state_t flstate;
+          if (read(fd, (void *)&flstate, sizeof(x86_float_state_t)) != sizeof(x86_float_state_t)) {
+            print_debug("Reading flavor, count failed.\n");
+            goto err;
+          }
+          size += sizeof(x86_float_state_t);
+        } else if (fc.flavor == x86_EXCEPTION_STATE) {
+          x86_exception_state_t excpstate;
+          if (read(fd, (void *)&excpstate, sizeof(x86_exception_state_t)) != sizeof(x86_exception_state_t)) {
+            printf("Reading flavor, count failed.\n");
+            goto err;
+          }
+          size += sizeof(x86_exception_state_t);
+        }
+      }
+    }
+  }
+  return true;
+err:
+  return false;
+}
+
+/**local function **/
+bool exists(const char *fname)
+{
+  int fd;
+  if ((fd = open(fname, O_RDONLY)) > 0) {
+    close(fd);
+    return true;
+  }
+  return false;
+}
+
+// we check: 1. lib
+//           2. lib/server
+//           3. jre/lib
+//           4. jre/lib/server
+// from: 1. exe path
+//       2. JAVA_HOME
+//       3. DYLD_LIBRARY_PATH
+static bool get_real_path(struct ps_prochandle* ph, char *rpath) {
+  /** check if they exist in JAVA ***/
+  char* execname = ph->core->exec_path;
+  char  filepath[4096];
+  char* filename = strrchr(rpath, '/');               // like /libjvm.dylib
+  if (filename == NULL) {
+    return false;
+  }
+
+  char* posbin = strstr(execname, "/bin/java");
+  if (posbin != NULL) {
+    memcpy(filepath, execname, posbin - execname);    // not include trailing '/'
+    filepath[posbin - execname] = '\0';
+  } else {
+    char* java_home = getenv("JAVA_HOME");
+    if (java_home != NULL) {
+      strcpy(filepath, java_home);
+    } else {
+      char* dyldpath = getenv("DYLD_LIBRARY_PATH");
+      char* dypath = strtok(dyldpath, ":");
+      while (dypath != NULL) {
+        strcpy(filepath, dypath);
+        strcat(filepath, filename);
+        if (exists(filepath)) {
+           strcpy(rpath, filepath);
+           return true;
+        }
+        dypath = strtok(dyldpath, ":");
+      }
+      // not found
+      return false;
+    }
+  }
+  // for exec and java_home, jdkpath now is filepath
+  size_t filepath_base_size = strlen(filepath);
+
+  // first try /lib/ and /lib/server
+  strcat(filepath, "/lib");
+  strcat(filepath, filename);
+  if (exists(filepath)) {
+    strcpy(rpath, filepath);
+    return true;
+  }
+  char* pos = strstr(filepath, filename);    // like /libjvm.dylib
+  *pos = '\0';
+  strcat(filepath, "/server");
+  strcat(filepath, filename);
+  if (exists(filepath)) {
+    strcpy(rpath, filepath);
+    return true;
+  }
+
+  // then try /jre/lib/ and /jre/lib/server
+  filepath[filepath_base_size] = '\0';
+  strcat(filepath, "/jre/lib");
+  strcat(filepath, filename);
+  if (exists(filepath)) {
+    strcpy(rpath, filepath);
+    return true;
+  }
+  pos = strstr(filepath, filename);
+  *pos = '\0';
+  strcat(filepath, "/server");
+  strcat(filepath, filename);
+  if (exists(filepath)) {
+    strcpy(rpath, filepath);
+    return true;
+  }
+
+  return false;
+}
+
+static bool read_shared_lib_info(struct ps_prochandle* ph) {
+  static int pagesize = 0;
+  int fd = ph->core->core_fd;
+  int i = 0, j;
+  uint32_t  v;
+  mach_header_64 header;        // used to check if a file header in segment
+  load_command lcmd;
+  dylib_command dylibcmd;
+
+  char name[BUF_SIZE];  // use to store name
+
+  if (pagesize == 0) {
+    pagesize = getpagesize();
+    print_debug("page size is %d\n", pagesize);
+  }
+  for (j = 0; j < ph->core->num_maps; j++) {
+    map_info *iter = ph->core->map_array[j];   // head
+    off_t fpos = iter->offset;
+    if (iter->fd != fd) {
+      // only search core file!
+      continue;
+    }
+    print_debug("map_info %d: vmaddr = 0x%016" PRIx64 "  fileoff = %" PRIu64 "  vmsize = %" PRIu64 "\n",
+                           j, iter->vaddr, iter->offset, iter->memsz);
+    lseek(fd, fpos, SEEK_SET);
+    // we assume .dylib loaded at segment address --- which is true for JVM libraries
+    // multiple files may be loaded in one segment.
+    // if first word is not a magic word, means this segment does not contain lib file.
+    if (read(fd, (void *)&v, sizeof(uint32_t)) == sizeof(uint32_t)) {
+      if (v != MH_MAGIC_64) {
+        continue;
+      }
+    } else {
+      // may be encountered last map, which is not readable
+      continue;
+    }
+    while (ltell(fd) - iter->offset < iter->memsz) {
+      lseek(fd, fpos, SEEK_SET);
+      if (read(fd, (void *)&v, sizeof(uint32_t)) != sizeof(uint32_t)) {
+        break;
+      }
+      if (v != MH_MAGIC_64) {
+        fpos = (ltell(fd) + pagesize -1)/pagesize * pagesize;
+        continue;
+      }
+      lseek(fd, -sizeof(uint32_t), SEEK_CUR);
+      // this is the file begining to core file.
+      if (read(fd, (void *)&header, sizeof(mach_header_64)) != sizeof(mach_header_64)) {
+        goto err;
+      }
+      fpos = ltell(fd);
+
+      // found a mach-o file in this segment
+      for (i = 0; i < header.ncmds; i++) {
+        // read commands in this "file"
+        // LC_ID_DYLIB is the file itself for a .dylib
+        lseek(fd, fpos, SEEK_SET);
+        if (read(fd, (void *)&lcmd, sizeof(load_command)) != sizeof(load_command)) {
+          return false;   // error
+        }
+        fpos += lcmd.cmdsize;  // next command position
+        // make sure still within seg size.
+        if (fpos  - lcmd.cmdsize - iter->offset > iter->memsz) {
+          print_debug("Warning: out of segement limit: %ld \n", fpos  - lcmd.cmdsize - iter->offset);
+          break;  // no need to iterate all commands
+        }
+        if (lcmd.cmd == LC_ID_DYLIB) {
+          lseek(fd, -sizeof(load_command), SEEK_CUR);
+          if (read(fd, (void *)&dylibcmd, sizeof(dylib_command)) != sizeof(dylib_command)) {
+            return false;
+          }
+          /**** name stored at dylib_command.dylib.name.offset, is a C string  */
+          lseek(fd, dylibcmd.dylib.name.offset - sizeof(dylib_command), SEEK_CUR);
+          int j = 0;
+          while (j < BUF_SIZE) {
+            read(fd, (void *)(name + j), sizeof(char));
+            if (name[j] == '\0') break;
+            j++;
+          }
+          print_debug("%s\n", name);
+          // changed name from @rpath/xxxx.dylib to real path
+          if (strrchr(name, '@')) {
+            get_real_path(ph, name);
+            print_debug("get_real_path returned: %s\n", name);
+          }
+          add_lib_info(ph, name, iter->vaddr);
+          break;
+        }
+      }
+      // done with the file, advanced to next page to search more files
+      fpos = (ltell(fd) + pagesize - 1) / pagesize * pagesize;
+    }
+  }
+  return true;
+err:
+  return false;
+}
+
+bool read_macho64_header(int fd, mach_header_64* core_header) {
+  bool is_macho = false;
+  if (fd < 0) return false;
+  off_t pos = ltell(fd);
+  lseek(fd, 0, SEEK_SET);
+  if (read(fd, (void *)core_header, sizeof(mach_header_64)) != sizeof(mach_header_64)) {
+    is_macho = false;
+  } else {
+    is_macho = (core_header->magic ==  MH_MAGIC_64 || core_header->magic ==  MH_CIGAM_64);
+  }
+  lseek(fd, pos, SEEK_SET);
+  return is_macho;
+}
+
+// the one and only one exposed stuff from this file
+struct ps_prochandle* Pgrab_core(const char* exec_file, const char* core_file) {
+  mach_header_64 core_header;
+  mach_header_64 exec_header;
+
+  struct ps_prochandle* ph = (struct ps_prochandle*) calloc(1, sizeof(struct ps_prochandle));
+  if (ph == NULL) {
+    print_debug("cant allocate ps_prochandle\n");
+    return NULL;
+  }
+
+  if ((ph->core = (struct core_data*) calloc(1, sizeof(struct core_data))) == NULL) {
+    free(ph);
+    print_debug("can't allocate ps_prochandle\n");
+    return NULL;
+  }
+
+  // initialize ph
+  ph->ops = &core_ops;
+  ph->core->core_fd   = -1;
+  ph->core->exec_fd   = -1;
+  ph->core->interp_fd = -1;
+
+  print_debug("exec: %s   core: %s", exec_file, core_file);
+
+  strncpy(ph->core->exec_path, exec_file, sizeof(ph->core->exec_path));
+
+  // open the core file
+  if ((ph->core->core_fd = open(core_file, O_RDONLY)) < 0) {
+    print_error("can't open core file\n");
+    goto err;
+  }
+
+  // read core file header
+  if (read_macho64_header(ph->core->core_fd, &core_header) != true || core_header.filetype != MH_CORE) {
+    print_debug("core file is not a valid Mach-O file\n");
+    goto err;
+  }
+
+  if ((ph->core->exec_fd = open(exec_file, O_RDONLY)) < 0) {
+    print_error("can't open executable file\n");
+    goto err;
+  }
+
+  if (read_macho64_header(ph->core->exec_fd, &exec_header) != true ||
+                          exec_header.filetype != MH_EXECUTE) {
+    print_error("executable file is not a valid Mach-O file\n");
+    goto err;
+  }
+
+  // process core file segments
+  if (read_core_segments(ph) != true) {
+    print_error("failed to read core segments\n");
+    goto err;
+  }
+
+  // allocate and sort maps into map_array, we need to do this
+  // here because read_shared_lib_info needs to read from debuggee
+  // address space
+  if (sort_map_array(ph) != true) {
+    print_error("failed to sort segment map array\n");
+    goto err;
+  }
+
+  if (read_shared_lib_info(ph) != true) {
+    print_error("failed to read libraries\n");
+    goto err;
+  }
+
+  // sort again because we have added more mappings from shared objects
+  if (sort_map_array(ph) != true) {
+    print_error("failed to sort segment map array\n");
+    goto err;
+  }
+
+  if (init_classsharing_workaround(ph) != true) {
+    print_error("failed to workaround classshareing\n");
+    goto err;
+  }
+
+  print_debug("Leave Pgrab_core\n");
+  return ph;
+
+err:
+  Prelease(ph);
+  return NULL;
+}
+
+#else // __APPLE__ (none macosx)
+
+// read regs and create thread from core file
 static bool core_handle_prstatus(struct ps_prochandle* ph, const char* buf, size_t nbytes) {
    // we have to read prstatus_t from buf
    // assert(nbytes == sizeof(prstaus_t), "size mismatch on prstatus_t");
    prstatus_t* prstat = (prstatus_t*) buf;
-   thread_info* newthr;
+   sa_thread_info* newthr;
    print_debug("got integer regset for lwp %d\n", prstat->pr_pid);
    // we set pthread_t to -1 for core dump
    if((newthr = add_thread_info(ph, (pthread_t) -1,  prstat->pr_pid)) == NULL)
@@ -632,8 +1093,9 @@ static bool core_handle_note(struct ps_prochandle* ph, ELF_PHDR* note_phdr) {
                                    notep->n_type, notep->n_descsz);
 
       if (notep->n_type == NT_PRSTATUS) {
-         if (core_handle_prstatus(ph, descdata, notep->n_descsz) != true)
+         if (core_handle_prstatus(ph, descdata, notep->n_descsz) != true) {
             return false;
+         }
       }
       p = descdata + ROUNDUP(notep->n_descsz, 4);
    }
@@ -681,7 +1143,9 @@ static bool read_core_segments(struct ps_prochandle* ph, ELF_EHDR* core_ehdr) {
     for (core_php = phbuf, i = 0; i < core_ehdr->e_phnum; i++) {
       switch (core_php->p_type) {
          case PT_NOTE:
-            if (core_handle_note(ph, core_php) != true) goto err;
+            if (core_handle_note(ph, core_php) != true) {
+              goto err;
+            }
             break;
 
          case PT_LOAD: {
@@ -800,7 +1264,6 @@ err:
    return false;
 }
 
-
 #define FIRST_LINK_MAP_OFFSET offsetof(struct r_debug,  r_map)
 #define LD_BASE_OFFSET        offsetof(struct r_debug,  r_ldbase)
 #define LINK_MAP_ADDR_OFFSET  offsetof(struct link_map, l_addr)
@@ -810,213 +1273,218 @@ err:
 // read shared library info from runtime linker's data structures.
 // This work is done by librtlb_db in Solaris
 static bool read_shared_lib_info(struct ps_prochandle* ph) {
-   uintptr_t addr = ph->core->dynamic_addr;
-   uintptr_t debug_base;
-   uintptr_t first_link_map_addr;
-   uintptr_t ld_base_addr;
-   uintptr_t link_map_addr;
-   uintptr_t lib_base_diff;
-   uintptr_t lib_base;
-   uintptr_t lib_name_addr;
-   char lib_name[BUF_SIZE];
-   ELF_DYN dyn;
-   ELF_EHDR elf_ehdr;
-   int lib_fd;
-
-   // _DYNAMIC has information of the form
-   //         [tag] [data] [tag] [data] .....
-   // Both tag and data are pointer sized.
-   // We look for dynamic info with DT_DEBUG. This has shared object info.
-   // refer to struct r_debug in link.h
-
-   dyn.d_tag = DT_NULL;
-   while (dyn.d_tag != DT_DEBUG) {
-      if (ps_pread(ph, (psaddr_t) addr, &dyn, sizeof(ELF_DYN)) != PS_OK) {
-         print_debug("can't read debug info from _DYNAMIC\n");
-         return false;
-      }
-      addr += sizeof(ELF_DYN);
-   }
-
-   // we have got Dyn entry with DT_DEBUG
-   debug_base = dyn.d_un.d_ptr;
-   // at debug_base we have struct r_debug. This has first link map in r_map field
-   if (ps_pread(ph, (psaddr_t) debug_base + FIRST_LINK_MAP_OFFSET,
-                 &first_link_map_addr, sizeof(uintptr_t)) != PS_OK) {
-      print_debug("can't read first link map address\n");
+  uintptr_t addr = ph->core->dynamic_addr;
+  uintptr_t debug_base;
+  uintptr_t first_link_map_addr;
+  uintptr_t ld_base_addr;
+  uintptr_t link_map_addr;
+  uintptr_t lib_base_diff;
+  uintptr_t lib_base;
+  uintptr_t lib_name_addr;
+  char lib_name[BUF_SIZE];
+  ELF_DYN dyn;
+  ELF_EHDR elf_ehdr;
+  int lib_fd;
+
+  // _DYNAMIC has information of the form
+  //         [tag] [data] [tag] [data] .....
+  // Both tag and data are pointer sized.
+  // We look for dynamic info with DT_DEBUG. This has shared object info.
+  // refer to struct r_debug in link.h
+
+  dyn.d_tag = DT_NULL;
+  while (dyn.d_tag != DT_DEBUG) {
+    if (ps_pread(ph, (psaddr_t) addr, &dyn, sizeof(ELF_DYN)) != PS_OK) {
+      print_debug("can't read debug info from _DYNAMIC\n");
       return false;
-   }
+    }
+    addr += sizeof(ELF_DYN);
+  }
 
-   // read ld_base address from struct r_debug
-   // XXX: There is no r_ldbase member on BSD
-/*
-   if (ps_pread(ph, (psaddr_t) debug_base + LD_BASE_OFFSET, &ld_base_addr,
-                 sizeof(uintptr_t)) != PS_OK) {
-      print_debug("can't read ld base address\n");
-      return false;
-   }
-   ph->core->ld_base_addr = ld_base_addr;
-*/
-   ph->core->ld_base_addr = 0;
+  // we have got Dyn entry with DT_DEBUG
+  debug_base = dyn.d_un.d_ptr;
+  // at debug_base we have struct r_debug. This has first link map in r_map field
+  if (ps_pread(ph, (psaddr_t) debug_base + FIRST_LINK_MAP_OFFSET,
+                  &first_link_map_addr, sizeof(uintptr_t)) != PS_OK) {
+    print_debug("can't read first link map address\n");
+    return false;
+  }
 
-   print_debug("interpreter base address is 0x%lx\n", ld_base_addr);
+  // read ld_base address from struct r_debug
+  // XXX: There is no r_ldbase member on BSD
+  /*
+  if (ps_pread(ph, (psaddr_t) debug_base + LD_BASE_OFFSET, &ld_base_addr,
+                  sizeof(uintptr_t)) != PS_OK) {
+    print_debug("can't read ld base address\n");
+    return false;
+  }
+  ph->core->ld_base_addr = ld_base_addr;
+  */
+  ph->core->ld_base_addr = 0;
 
-   // now read segments from interp (i.e ld-elf.so.1)
-   if (read_interp_segments(ph) != true)
-      return false;
+  print_debug("interpreter base address is 0x%lx\n", ld_base_addr);
 
-   // after adding interpreter (ld.so) mappings sort again
-   if (sort_map_array(ph) != true)
-      return false;
+  // now read segments from interp (i.e ld-elf.so.1)
+  if (read_interp_segments(ph) != true)
+    return false;
 
-   print_debug("first link map is at 0x%lx\n", first_link_map_addr);
+  // after adding interpreter (ld.so) mappings sort again
+  if (sort_map_array(ph) != true)
+    return false;
 
-   link_map_addr = first_link_map_addr;
-   while (link_map_addr != 0) {
-      // read library base address of the .so. Note that even though <sys/link.h> calls
-      // link_map->l_addr as "base address",  this is * not * really base virtual
-      // address of the shared object. This is actually the difference b/w the virtual
-      // address mentioned in shared object and the actual virtual base where runtime
-      // linker loaded it. We use "base diff" in read_lib_segments call below.
+  print_debug("first link map is at 0x%lx\n", first_link_map_addr);
 
-      if (ps_pread(ph, (psaddr_t) link_map_addr + LINK_MAP_ADDR_OFFSET,
-                   &lib_base_diff, sizeof(uintptr_t)) != PS_OK) {
-         print_debug("can't read shared object base address diff\n");
-         return false;
-      }
+  link_map_addr = first_link_map_addr;
+  while (link_map_addr != 0) {
+    // read library base address of the .so. Note that even though <sys/link.h> calls
+    // link_map->l_addr as "base address",  this is * not * really base virtual
+    // address of the shared object. This is actually the difference b/w the virtual
+    // address mentioned in shared object and the actual virtual base where runtime
+    // linker loaded it. We use "base diff" in read_lib_segments call below.
 
-      // read address of the name
-      if (ps_pread(ph, (psaddr_t) link_map_addr + LINK_MAP_NAME_OFFSET,
-                    &lib_name_addr, sizeof(uintptr_t)) != PS_OK) {
-         print_debug("can't read address of shared object name\n");
-         return false;
-      }
+    if (ps_pread(ph, (psaddr_t) link_map_addr + LINK_MAP_ADDR_OFFSET,
+                 &lib_base_diff, sizeof(uintptr_t)) != PS_OK) {
+      print_debug("can't read shared object base address diff\n");
+      return false;
+    }
 
-      // read name of the shared object
-      if (read_string(ph, (uintptr_t) lib_name_addr, lib_name, sizeof(lib_name)) != true) {
-         print_debug("can't read shared object name\n");
-         return false;
-      }
+    // read address of the name
+    if (ps_pread(ph, (psaddr_t) link_map_addr + LINK_MAP_NAME_OFFSET,
+                  &lib_name_addr, sizeof(uintptr_t)) != PS_OK) {
+      print_debug("can't read address of shared object name\n");
+      return false;
+    }
 
-      if (lib_name[0] != '\0') {
-         // ignore empty lib names
-         lib_fd = pathmap_open(lib_name);
-
-         if (lib_fd < 0) {
-            print_debug("can't open shared object %s\n", lib_name);
-            // continue with other libraries...
-         } else {
-            if (read_elf_header(lib_fd, &elf_ehdr)) {
-               lib_base = lib_base_diff + find_base_address(lib_fd, &elf_ehdr);
-               print_debug("reading library %s @ 0x%lx [ 0x%lx ]\n",
-                           lib_name, lib_base, lib_base_diff);
-               // while adding library mappings we need to use "base difference".
-               if (! read_lib_segments(ph, lib_fd, &elf_ehdr, lib_base_diff)) {
-                  print_debug("can't read shared object's segments\n");
-                  close(lib_fd);
-                  return false;
-               }
-               add_lib_info_fd(ph, lib_name, lib_fd, lib_base);
-               // Map info is added for the library (lib_name) so
-               // we need to re-sort it before calling the p_pdread.
-               if (sort_map_array(ph) != true)
-                  return false;
-            } else {
-               print_debug("can't read ELF header for shared object %s\n", lib_name);
-               close(lib_fd);
-               // continue with other libraries...
-            }
-         }
+    // read name of the shared object
+    if (read_string(ph, (uintptr_t) lib_name_addr, lib_name, sizeof(lib_name)) != true) {
+      print_debug("can't read shared object name\n");
+      return false;
+    }
+
+    if (lib_name[0] != '\0') {
+      // ignore empty lib names
+      lib_fd = pathmap_open(lib_name);
+
+      if (lib_fd < 0) {
+        print_debug("can't open shared object %s\n", lib_name);
+        // continue with other libraries...
+      } else {
+        if (read_elf_header(lib_fd, &elf_ehdr)) {
+          lib_base = lib_base_diff + find_base_address(lib_fd, &elf_ehdr);
+          print_debug("reading library %s @ 0x%lx [ 0x%lx ]\n",
+                       lib_name, lib_base, lib_base_diff);
+          // while adding library mappings we need to use "base difference".
+          if (! read_lib_segments(ph, lib_fd, &elf_ehdr, lib_base_diff)) {
+            print_debug("can't read shared object's segments\n");
+            close(lib_fd);
+            return false;
+          }
+          add_lib_info_fd(ph, lib_name, lib_fd, lib_base);
+          // Map info is added for the library (lib_name) so
+          // we need to re-sort it before calling the p_pdread.
+          if (sort_map_array(ph) != true)
+            return false;
+        } else {
+          print_debug("can't read ELF header for shared object %s\n", lib_name);
+          close(lib_fd);
+          // continue with other libraries...
+        }
       }
+    }
 
-      // read next link_map address
-      if (ps_pread(ph, (psaddr_t) link_map_addr + LINK_MAP_NEXT_OFFSET,
-                        &link_map_addr, sizeof(uintptr_t)) != PS_OK) {
-         print_debug("can't read next link in link_map\n");
-         return false;
-      }
-   }
+    // read next link_map address
+    if (ps_pread(ph, (psaddr_t) link_map_addr + LINK_MAP_NEXT_OFFSET,
+                 &link_map_addr, sizeof(uintptr_t)) != PS_OK) {
+      print_debug("can't read next link in link_map\n");
+      return false;
+    }
+  }
 
-   return true;
+  return true;
 }
 
 // the one and only one exposed stuff from this file
 struct ps_prochandle* Pgrab_core(const char* exec_file, const char* core_file) {
-   ELF_EHDR core_ehdr;
-   ELF_EHDR exec_ehdr;
+  ELF_EHDR core_ehdr;
+  ELF_EHDR exec_ehdr;
 
-   struct ps_prochandle* ph = (struct ps_prochandle*) calloc(1, sizeof(struct ps_prochandle));
-   if (ph == NULL) {
-      print_debug("can't allocate ps_prochandle\n");
-      return NULL;
-   }
+  struct ps_prochandle* ph = (struct ps_prochandle*) calloc(1, sizeof(struct ps_prochandle));
+  if (ph == NULL) {
+    print_debug("cant allocate ps_prochandle\n");
+    return NULL;
+  }
 
-   if ((ph->core = (struct core_data*) calloc(1, sizeof(struct core_data))) == NULL) {
-      free(ph);
-      print_debug("can't allocate ps_prochandle\n");
-      return NULL;
-   }
+  if ((ph->core = (struct core_data*) calloc(1, sizeof(struct core_data))) == NULL) {
+    free(ph);
+    print_debug("can't allocate ps_prochandle\n");
+    return NULL;
+  }
 
-   // initialize ph
-   ph->ops = &core_ops;
-   ph->core->core_fd   = -1;
-   ph->core->exec_fd   = -1;
-   ph->core->interp_fd = -1;
+  // initialize ph
+  ph->ops = &core_ops;
+  ph->core->core_fd   = -1;
+  ph->core->exec_fd   = -1;
+  ph->core->interp_fd = -1;
 
-   // open the core file
-   if ((ph->core->core_fd = open(core_file, O_RDONLY)) < 0) {
-      print_debug("can't open core file\n");
-      goto err;
-   }
+  print_debug("exec: %s   core: %s", exec_file, core_file);
 
-   // read core file ELF header
-   if (read_elf_header(ph->core->core_fd, &core_ehdr) != true || core_ehdr.e_type != ET_CORE) {
-      print_debug("core file is not a valid ELF ET_CORE file\n");
-      goto err;
-   }
+  // open the core file
+  if ((ph->core->core_fd = open(core_file, O_RDONLY)) < 0) {
+    print_debug("can't open core file\n");
+    goto err;
+  }
 
-   if ((ph->core->exec_fd = open(exec_file, O_RDONLY)) < 0) {
-      print_debug("can't open executable file\n");
-      goto err;
-   }
+  // read core file ELF header
+  if (read_elf_header(ph->core->core_fd, &core_ehdr) != true || core_ehdr.e_type != ET_CORE) {
+    print_debug("core file is not a valid ELF ET_CORE file\n");
+    goto err;
+  }
 
-   if (read_elf_header(ph->core->exec_fd, &exec_ehdr) != true || exec_ehdr.e_type != ET_EXEC) {
-      print_debug("executable file is not a valid ELF ET_EXEC file\n");
-      goto err;
-   }
+  if ((ph->core->exec_fd = open(exec_file, O_RDONLY)) < 0) {
+    print_debug("can't open executable file\n");
+    goto err;
+  }
 
-   // process core file segments
-   if (read_core_segments(ph, &core_ehdr) != true)
-      goto err;
+  if (read_elf_header(ph->core->exec_fd, &exec_ehdr) != true || exec_ehdr.e_type != ET_EXEC) {
+     print_debug("executable file is not a valid ELF ET_EXEC file\n");
+     goto err;
+  }
 
-   // process exec file segments
-   if (read_exec_segments(ph, &exec_ehdr) != true)
-      goto err;
+  // process core file segments
+  if (read_core_segments(ph, &core_ehdr) != true)
+     goto err;
 
-   // exec file is also treated like a shared object for symbol search
-   if (add_lib_info_fd(ph, exec_file, ph->core->exec_fd,
-                       (uintptr_t)0 + find_base_address(ph->core->exec_fd, &exec_ehdr)) == NULL)
-      goto err;
+  // process exec file segments
+  if (read_exec_segments(ph, &exec_ehdr) != true)
+     goto err;
 
-   // allocate and sort maps into map_array, we need to do this
-   // here because read_shared_lib_info needs to read from debuggee
-   // address space
-   if (sort_map_array(ph) != true)
-      goto err;
+  // exec file is also treated like a shared object for symbol search
+  if (add_lib_info_fd(ph, exec_file, ph->core->exec_fd,
+                      (uintptr_t)0 + find_base_address(ph->core->exec_fd, &exec_ehdr)) == NULL)
+     goto err;
 
-   if (read_shared_lib_info(ph) != true)
-      goto err;
+  // allocate and sort maps into map_array, we need to do this
+  // here because read_shared_lib_info needs to read from debuggee
+  // address space
+  if (sort_map_array(ph) != true)
+    goto err;
 
-   // sort again because we have added more mappings from shared objects
-   if (sort_map_array(ph) != true)
-      goto err;
+  if (read_shared_lib_info(ph) != true)
+    goto err;
 
-   if (init_classsharing_workaround(ph) != true)
-      goto err;
+  // sort again because we have added more mappings from shared objects
+  if (sort_map_array(ph) != true)
+    goto err;
+
+  if (init_classsharing_workaround(ph) != true)
+    goto err;
 
-   return ph;
+  print_debug("Leave Pgrab_core\n");
+  return ph;
 
 err:
-   Prelease(ph);
-   return NULL;
+  Prelease(ph);
+  return NULL;
 }
+
+#endif // __APPLE__
diff --git a/agent/src/os/bsd/symtab.c b/agent/src/os/bsd/symtab.c
index 9a9fbd234..0299cb2b7 100644
--- a/agent/src/os/bsd/symtab.c
+++ b/agent/src/os/bsd/symtab.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -28,32 +28,182 @@
 #include <string.h>
 #include <db.h>
 #include <fcntl.h>
+
+#include "libproc_impl.h"
 #include "symtab.h"
+#ifndef __APPLE__
 #include "salibelf.h"
+#endif // __APPLE__
 
 
 // ----------------------------------------------------
 // functions for symbol lookups
 // ----------------------------------------------------
 
-struct elf_section {
-  ELF_SHDR   *c_shdr;
-  void       *c_data;
-};
-
-struct elf_symbol {
-  char *name;
-  uintptr_t offset;
-  uintptr_t size;
-};
+typedef struct symtab_symbol {
+  char *name;                // name like __ZThread_...
+  uintptr_t offset;          // to loaded address
+  uintptr_t size;            // size strlen
+} symtab_symbol;
 
 typedef struct symtab {
-  char *strs;
+  char *strs;                // all symbols "__symbol1__'\0'__symbol2__...."
   size_t num_symbols;
-  struct elf_symbol *symbols;
   DB* hash_table;
+  symtab_symbol* symbols;
 } symtab_t;
 
+#ifdef __APPLE__
+
+void build_search_table(symtab_t *symtab) {
+  int i;
+  for (i = 0; i < symtab->num_symbols; i++) {
+    DBT key, value;
+    key.data = symtab->symbols[i].name;
+    key.size = strlen(key.data) + 1;
+    value.data = &(symtab->symbols[i]);
+    value.size = sizeof(symtab_symbol);
+    (*symtab->hash_table->put)(symtab->hash_table, &key, &value, 0);
+
+    // check result
+    if (is_debug()) {
+      DBT rkey, rvalue;
+      char* tmp = (char *)malloc(strlen(symtab->symbols[i].name) + 1);
+      strcpy(tmp, symtab->symbols[i].name);
+      rkey.data = tmp;
+      rkey.size = strlen(tmp) + 1;
+      (*symtab->hash_table->get)(symtab->hash_table, &rkey, &rvalue, 0);
+      // we may get a copy back so compare contents
+      symtab_symbol *res = (symtab_symbol *)rvalue.data;
+      if (strcmp(res->name, symtab->symbols[i].name)  ||
+          res->offset != symtab->symbols[i].offset    ||
+          res->size != symtab->symbols[i].size) {
+        print_debug("error to get hash_table value!\n");
+      }
+      free(tmp);
+    }
+  }
+}
+
+// read symbol table from given fd.
+struct symtab* build_symtab(int fd) {
+  symtab_t* symtab = NULL;
+  int i;
+  mach_header_64 header;
+  off_t image_start;
+
+  if (!get_arch_off(fd, CPU_TYPE_X86_64, &image_start)) {
+    print_debug("failed in get fat header\n");
+    return NULL;
+  }
+  lseek(fd, image_start, SEEK_SET);
+  if (read(fd, (void *)&header, sizeof(mach_header_64)) != sizeof(mach_header_64)) {
+    print_debug("reading header failed!\n");
+    return NULL;
+  }
+  // header
+  if (header.magic != MH_MAGIC_64) {
+    print_debug("not a valid .dylib file\n");
+    return NULL;
+  }
+
+  load_command lcmd;
+  symtab_command symtabcmd;
+  nlist_64 lentry;
+
+  bool lcsymtab_exist = false;
+
+  long filepos = ltell(fd);
+  for (i = 0; i < header.ncmds; i++) {
+    lseek(fd, filepos, SEEK_SET);
+    if (read(fd, (void *)&lcmd, sizeof(load_command)) != sizeof(load_command)) {
+      print_debug("read load_command failed for file\n");
+      return NULL;
+    }
+    filepos += lcmd.cmdsize;  // next command position
+    if (lcmd.cmd == LC_SYMTAB) {
+      lseek(fd, -sizeof(load_command), SEEK_CUR);
+      lcsymtab_exist = true;
+      break;
+    }
+  }
+  if (!lcsymtab_exist) {
+    print_debug("No symtab command found!\n");
+    return NULL;
+  }
+  if (read(fd, (void *)&symtabcmd, sizeof(symtab_command)) != sizeof(symtab_command)) {
+    print_debug("read symtab_command failed for file");
+    return NULL;
+  }
+  symtab = (symtab_t *)malloc(sizeof(symtab_t));
+  if (symtab == NULL) {
+    print_debug("out of memory: allocating symtab\n");
+    return NULL;
+  }
+
+  // create hash table, we use berkeley db to
+  // manipulate the hash table.
+  symtab->hash_table = dbopen(NULL, O_CREAT | O_RDWR, 0600, DB_HASH, NULL);
+  if (symtab->hash_table == NULL)
+    goto quit;
+
+  symtab->num_symbols = symtabcmd.nsyms;
+  symtab->symbols = (symtab_symbol *)malloc(sizeof(symtab_symbol) * symtab->num_symbols);
+  symtab->strs    = (char *)malloc(sizeof(char) * symtabcmd.strsize);
+  if (symtab->symbols == NULL || symtab->strs == NULL) {
+     print_debug("out of memory: allocating symtab.symbol or symtab.strs\n");
+     goto quit;
+  }
+  lseek(fd, image_start + symtabcmd.symoff, SEEK_SET);
+  for (i = 0; i < symtab->num_symbols; i++) {
+    if (read(fd, (void *)&lentry, sizeof(nlist_64)) != sizeof(nlist_64)) {
+      print_debug("read nlist_64 failed at %i\n", i);
+      goto quit;
+    }
+    symtab->symbols[i].offset = lentry.n_value;
+    symtab->symbols[i].size  = lentry.n_un.n_strx;        // index
+  }
+
+  // string table
+  lseek(fd, image_start + symtabcmd.stroff, SEEK_SET);
+  int size = read(fd, (void *)(symtab->strs), symtabcmd.strsize * sizeof(char));
+  if (size != symtabcmd.strsize * sizeof(char)) {
+     print_debug("reading string table failed\n");
+     goto quit;
+  }
+
+  for (i = 0; i < symtab->num_symbols; i++) {
+    symtab->symbols[i].name = symtab->strs + symtab->symbols[i].size;
+    if (i > 0) {
+      // fix size
+      symtab->symbols[i - 1].size = symtab->symbols[i].size - symtab->symbols[i - 1].size;
+      print_debug("%s size = %d\n", symtab->symbols[i - 1].name, symtab->symbols[i - 1].size);
+
+    }
+
+    if (i == symtab->num_symbols - 1) {
+      // last index
+      symtab->symbols[i].size =
+            symtabcmd.strsize - symtab->symbols[i].size;
+      print_debug("%s size = %d\n", symtab->symbols[i].name, symtab->symbols[i].size);
+    }
+  }
+
+  // build a hashtable for fast query
+  build_search_table(symtab);
+  return symtab;
+quit:
+  if (symtab) destroy_symtab(symtab);
+  return NULL;
+}
+
+#else // __APPLE__
+
+struct elf_section {
+  ELF_SHDR   *c_shdr;
+  void       *c_data;
+};
+
 // read symbol table from given fd.
 struct symtab* build_symtab(int fd) {
   ELF_EHDR ehdr;
@@ -176,7 +326,7 @@ struct symtab* build_symtab(int fd) {
         key.data = sym_name;
         key.size = strlen(sym_name) + 1;
         value.data = &(symtab->symbols[j]);
-        value.size = sizeof(void *);
+        value.size = sizeof(symtab_symbol);
         (*symtab->hash_table->put)(symtab->hash_table, &key, &value, 0);
       }
     }
@@ -201,30 +351,29 @@ quit:
   return symtab;
 }
 
-void destroy_symtab(struct symtab* symtab) {
+#endif // __APPLE__
+
+void destroy_symtab(symtab_t* symtab) {
   if (!symtab) return;
-  if (symtab->strs) free(symtab->strs);
-  if (symtab->symbols) free(symtab->symbols);
-  if (symtab->hash_table) {
-    (*symtab->hash_table->close)(symtab->hash_table);
-  }
+  free(symtab->strs);
+  free(symtab->symbols);
   free(symtab);
 }
 
-uintptr_t search_symbol(struct symtab* symtab, uintptr_t base,
-                      const char *sym_name, int *sym_size) {
+uintptr_t search_symbol(struct symtab* symtab, uintptr_t base, const char *sym_name, int *sym_size) {
   DBT key, value;
   int ret;
 
   // library does not have symbol table
-  if (!symtab || !symtab->hash_table)
+  if (!symtab || !symtab->hash_table) {
      return 0;
+  }
 
   key.data = (char*)(uintptr_t)sym_name;
   key.size = strlen(sym_name) + 1;
   ret = (*symtab->hash_table->get)(symtab->hash_table, &key, &value, 0);
   if (ret == 0) {
-    struct elf_symbol *sym = value.data;
+    symtab_symbol *sym = value.data;
     uintptr_t rslt = (uintptr_t) ((char*)base + sym->offset);
     if (sym_size) *sym_size = sym->size;
     return rslt;
@@ -238,7 +387,7 @@ const char* nearest_symbol(struct symtab* symtab, uintptr_t offset,
   int n = 0;
   if (!symtab) return NULL;
   for (; n < symtab->num_symbols; n++) {
-    struct elf_symbol* sym = &(symtab->symbols[n]);
+    symtab_symbol* sym = &(symtab->symbols[n]);
     if (sym->name != NULL &&
       offset >= sym->offset && offset < sym->offset + sym->size) {
       if (poffset) *poffset = (offset - sym->offset);
diff --git a/agent/src/os/bsd/symtab.h b/agent/src/os/bsd/symtab.h
index 9b7eef77d..f5f8645da 100644
--- a/agent/src/os/bsd/symtab.h
+++ b/agent/src/os/bsd/symtab.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,11 +27,11 @@
 
 #include <stdint.h>
 
-// interface to manage ELF symbol tables
+// interface to manage ELF or MachO symbol tables
 
 struct symtab;
 
-// build symbol table for a given ELF file descriptor
+// build symbol table for a given ELF or MachO file escriptor
 struct symtab* build_symtab(int fd);
 
 // destroy the symbol table
diff --git a/agent/src/share/classes/sun/jvm/hotspot/BsdVtblAccess.java b/agent/src/share/classes/sun/jvm/hotspot/BsdVtblAccess.java
index ed688758d..6d422f62a 100644
--- a/agent/src/share/classes/sun/jvm/hotspot/BsdVtblAccess.java
+++ b/agent/src/share/classes/sun/jvm/hotspot/BsdVtblAccess.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, 2003, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -34,11 +34,18 @@ public class BsdVtblAccess extends BasicVtblAccess {
   public BsdVtblAccess(SymbolLookup symbolLookup,
                          String[] dllNames) {
     super(symbolLookup, dllNames);
-
-    if (symbolLookup.lookup("libjvm.so", "__vt_10JavaThread") != null ||
-        symbolLookup.lookup("libjvm_g.so", "__vt_10JavaThread") != null) {
+    boolean oldVT = false;
+    boolean isDarwin = dllNames[0].lastIndexOf(".dylib") != -1;
+    String vtJavaThread = isDarwin ? "_vt_10JavaThread" : "__vt_10JavaThread";
+    for (String dllName : dllNames) {
+       if (symbolLookup.lookup(dllName, vtJavaThread) != null) {
+         oldVT = true;
+         break;
+       }
+    }
+    if (oldVT) {
        // old C++ ABI
-       vt = "__vt_";
+       vt = isDarwin ? "_vt_" :  "__vt_";
     } else {
        // new C++ ABI
        vt = "_ZTV";
diff --git a/agent/src/share/classes/sun/jvm/hotspot/CommandProcessor.java b/agent/src/share/classes/sun/jvm/hotspot/CommandProcessor.java
index 23058f428..223384426 100644
--- a/agent/src/share/classes/sun/jvm/hotspot/CommandProcessor.java
+++ b/agent/src/share/classes/sun/jvm/hotspot/CommandProcessor.java
@@ -24,36 +24,81 @@
 
 package sun.jvm.hotspot;
 
-import java.io.*;
-import java.math.*;
-import java.util.*;
-import java.util.regex.*;
-
-import sun.jvm.hotspot.types.Type;
-import sun.jvm.hotspot.types.Field;
-import sun.jvm.hotspot.HotSpotTypeDataBase;
-import sun.jvm.hotspot.types.basic.BasicType;
-import sun.jvm.hotspot.types.basic.BasicTypeDataBase;
-import sun.jvm.hotspot.types.CIntegerType;
-import sun.jvm.hotspot.code.*;
-import sun.jvm.hotspot.compiler.*;
-import sun.jvm.hotspot.debugger.*;
-import sun.jvm.hotspot.interpreter.*;
-import sun.jvm.hotspot.memory.*;
-import sun.jvm.hotspot.oops.*;
-import sun.jvm.hotspot.opto.*;
-import sun.jvm.hotspot.ci.*;
-import sun.jvm.hotspot.asm.*;
-import sun.jvm.hotspot.runtime.*;
-import sun.jvm.hotspot.utilities.*;
-import sun.jvm.hotspot.utilities.soql.*;
-import sun.jvm.hotspot.ui.classbrowser.*;
-import sun.jvm.hotspot.ui.tree.*;
-import sun.jvm.hotspot.tools.*;
+import java.io.BufferedOutputStream;
+import java.io.BufferedReader;
+import java.io.ByteArrayOutputStream;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.PrintStream;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Stack;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import sun.jvm.hotspot.ci.ciEnv;
+import sun.jvm.hotspot.code.CodeBlob;
+import sun.jvm.hotspot.code.CodeCacheVisitor;
+import sun.jvm.hotspot.code.NMethod;
+import sun.jvm.hotspot.debugger.Address;
+import sun.jvm.hotspot.debugger.OopHandle;
+import sun.jvm.hotspot.memory.SymbolTable;
+import sun.jvm.hotspot.memory.SystemDictionary;
+import sun.jvm.hotspot.memory.Universe;
+import sun.jvm.hotspot.oops.DefaultHeapVisitor;
+import sun.jvm.hotspot.oops.HeapVisitor;
+import sun.jvm.hotspot.oops.InstanceKlass;
+import sun.jvm.hotspot.oops.Klass;
+import sun.jvm.hotspot.oops.Metadata;
+import sun.jvm.hotspot.oops.Method;
+import sun.jvm.hotspot.oops.MethodData;
+import sun.jvm.hotspot.oops.Oop;
+import sun.jvm.hotspot.oops.RawHeapVisitor;
+import sun.jvm.hotspot.oops.Symbol;
+import sun.jvm.hotspot.oops.UnknownOopException;
+import sun.jvm.hotspot.opto.Compile;
+import sun.jvm.hotspot.opto.InlineTree;
+import sun.jvm.hotspot.runtime.CompiledVFrame;
+import sun.jvm.hotspot.runtime.CompilerThread;
+import sun.jvm.hotspot.runtime.JavaThread;
+import sun.jvm.hotspot.runtime.JavaVFrame;
+import sun.jvm.hotspot.runtime.Threads;
+import sun.jvm.hotspot.runtime.VM;
 import sun.jvm.hotspot.tools.ObjectHistogram;
+import sun.jvm.hotspot.tools.PMap;
+import sun.jvm.hotspot.tools.PStack;
 import sun.jvm.hotspot.tools.StackTrace;
 import sun.jvm.hotspot.tools.jcore.ClassDump;
 import sun.jvm.hotspot.tools.jcore.ClassFilter;
+import sun.jvm.hotspot.types.CIntegerType;
+import sun.jvm.hotspot.types.Field;
+import sun.jvm.hotspot.types.Type;
+import sun.jvm.hotspot.types.basic.BasicType;
+import sun.jvm.hotspot.ui.classbrowser.HTMLGenerator;
+import sun.jvm.hotspot.ui.tree.CTypeTreeNodeAdapter;
+import sun.jvm.hotspot.ui.tree.OopTreeNodeAdapter;
+import sun.jvm.hotspot.ui.tree.SimpleTreeNode;
+import sun.jvm.hotspot.utilities.AddressOps;
+import sun.jvm.hotspot.utilities.Assert;
+import sun.jvm.hotspot.utilities.HeapProgressThunk;
+import sun.jvm.hotspot.utilities.LivenessPathElement;
+import sun.jvm.hotspot.utilities.MethodArray;
+import sun.jvm.hotspot.utilities.ObjectReader;
+import sun.jvm.hotspot.utilities.PointerFinder;
+import sun.jvm.hotspot.utilities.PointerLocation;
+import sun.jvm.hotspot.utilities.ReversePtrs;
+import sun.jvm.hotspot.utilities.ReversePtrsAnalysis;
+import sun.jvm.hotspot.utilities.RobustOopDeterminator;
+import sun.jvm.hotspot.utilities.SystemDictionaryHelper;
+import sun.jvm.hotspot.utilities.soql.JSJavaFactory;
+import sun.jvm.hotspot.utilities.soql.JSJavaFactoryImpl;
+import sun.jvm.hotspot.utilities.soql.JSJavaScriptEngine;
 
 public class CommandProcessor {
     public abstract static class DebuggerInterface {
@@ -1132,6 +1177,10 @@ public class CommandProcessor {
                     Klass klass = null;
                     if (t.countTokens() == 1) {
                         klass = SystemDictionaryHelper.findInstanceKlass(t.nextToken());
+                        if (klass == null) {
+                            out.println("No such type.");
+                            return;
+                        }
                     }
                     while (base != null && base.lessThan(end)) {
                         long step = stride;
@@ -1517,7 +1566,7 @@ public class CommandProcessor {
                         ByteArrayOutputStream bos = new ByteArrayOutputStream();
                         thread.printThreadIDOn(new PrintStream(bos));
                         if (all || bos.toString().equals(name)) {
-                            out.println(bos.toString() + " = " + thread.getAddress());
+                            out.println("Thread " + bos.toString() + " Address: " + thread.getAddress());
                             HTMLGenerator gen = new HTMLGenerator(false);
                             try {
                                 out.println(gen.genHTMLForJavaStackTrace(thread));
@@ -1546,7 +1595,7 @@ public class CommandProcessor {
                         ByteArrayOutputStream bos = new ByteArrayOutputStream();
                         thread.printThreadIDOn(new PrintStream(bos));
                         if (all || bos.toString().equals(name)) {
-                            out.println(bos.toString() + " = " + thread.getAddress());
+                            out.println("Thread " + bos.toString() + " Address " + thread.getAddress());
                             if (!all) return;
                         }
                     }
diff --git a/agent/src/share/classes/sun/jvm/hotspot/HotSpotAgent.java b/agent/src/share/classes/sun/jvm/hotspot/HotSpotAgent.java
index bb718d9f7..8abd084c8 100644
--- a/agent/src/share/classes/sun/jvm/hotspot/HotSpotAgent.java
+++ b/agent/src/share/classes/sun/jvm/hotspot/HotSpotAgent.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -311,6 +311,8 @@ public class HotSpotAgent {
                 setupDebuggerLinux();
             } else if (os.equals("bsd")) {
                 setupDebuggerBsd();
+            } else if (os.equals("darwin")) {
+                setupDebuggerDarwin();
             } else {
                 // Add support for more operating systems here
                 throw new DebuggerException("Operating system " + os + " not yet supported");
@@ -370,6 +372,10 @@ public class HotSpotAgent {
                 db = new HotSpotTypeDataBase(machDesc,
                 new BsdVtblAccess(debugger, jvmLibNames),
                 debugger, jvmLibNames);
+            } else if (os.equals("darwin")) {
+                db = new HotSpotTypeDataBase(machDesc,
+                new BsdVtblAccess(debugger, jvmLibNames),
+                debugger, jvmLibNames);
             } else {
                 throw new DebuggerException("OS \"" + os + "\" not yet supported (no VtblAccess yet)");
             }
@@ -459,6 +465,8 @@ public class HotSpotAgent {
             setupJVMLibNamesLinux();
         } else if (os.equals("bsd")) {
             setupJVMLibNamesBsd();
+        } else if (os.equals("darwin")) {
+            setupJVMLibNamesDarwin();
         } else {
             throw new RuntimeException("Unknown OS type");
         }
@@ -567,6 +575,29 @@ public class HotSpotAgent {
         jvmLibNames = new String[] { "libjvm.so", "libjvm_g.so" };
     }
 
+    //
+    // Darwin
+    //
+
+    private void setupDebuggerDarwin() {
+        setupJVMLibNamesDarwin();
+
+        if (cpu.equals("amd64") || cpu.equals("x86_64")) {
+            machDesc = new MachineDescriptionAMD64();
+        } else {
+            throw new DebuggerException("Darwin only supported on x86_64. Current arch: " + cpu);
+        }
+
+        BsdDebuggerLocal dbg = new BsdDebuggerLocal(machDesc, !isServer);
+        debugger = dbg;
+
+        attachDebugger();
+    }
+
+    private void setupJVMLibNamesDarwin() {
+        jvmLibNames = new String[] { "libjvm.dylib", "libjvm_g.dylib" };
+    }
+
     /** Convenience routine which should be called by per-platform
       debugger setup. Should not be called when startupMode is
       REMOTE_MODE. */
diff --git a/agent/src/share/classes/sun/jvm/hotspot/debugger/bsd/BsdDebuggerLocal.java b/agent/src/share/classes/sun/jvm/hotspot/debugger/bsd/BsdDebuggerLocal.java
index c6fbb7dab..9a26584e3 100644
--- a/agent/src/share/classes/sun/jvm/hotspot/debugger/bsd/BsdDebuggerLocal.java
+++ b/agent/src/share/classes/sun/jvm/hotspot/debugger/bsd/BsdDebuggerLocal.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, 2008, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -31,6 +31,9 @@ import sun.jvm.hotspot.debugger.*;
 import sun.jvm.hotspot.debugger.x86.*;
 import sun.jvm.hotspot.debugger.cdbg.*;
 import sun.jvm.hotspot.utilities.*;
+import sun.jvm.hotspot.runtime.VM;
+import sun.jvm.hotspot.runtime.Threads;
+import sun.jvm.hotspot.runtime.JavaThread;
 import java.lang.reflect.*;
 
 /** <P> An implementation of the JVMDebugger interface. The basic debug
@@ -51,10 +54,11 @@ import java.lang.reflect.*;
 public class BsdDebuggerLocal extends DebuggerBase implements BsdDebugger {
     private boolean useGCC32ABI;
     private boolean attached;
-    private long    p_ps_prochandle; // native debugger handle
-    private long    symbolicator; // macosx symbolicator handle
-    private long    task; // macosx task handle
+    private long    p_ps_prochandle;      // native debugger handle
+    private long    symbolicator;         // macosx symbolicator handle
+    private long    task;                 // macosx task handle
     private boolean isCore;
+    private boolean isDarwin;             // variant for bsd
 
     // CDebugger support
     private BsdCDebugger cdbg;
@@ -208,6 +212,7 @@ public class BsdDebuggerLocal extends DebuggerBase implements BsdDebugger {
             }
         }
 
+        isDarwin = getOS().equals("darwin");
         workerThread = new BsdDebuggerLocalWorkerThread(this);
         workerThread.start();
     }
@@ -240,8 +245,11 @@ public class BsdDebuggerLocal extends DebuggerBase implements BsdDebugger {
 
     /* called from attach methods */
     private void findABIVersion() throws DebuggerException {
-        if (lookupByName0("libjvm.so", "__vt_10JavaThread") != 0 ||
-            lookupByName0("libjvm_g.so", "__vt_10JavaThread") != 0) {
+        String libjvmName = isDarwin ? "libjvm.dylib" : "libjvm.so";
+        String libjvm_gName = isDarwin? "libjvm_g.dylib" : "libjvm_g.so";
+        String javaThreadVt = isDarwin ? "_vt_10JavaThread" : "__vt_10JavaThread";
+        if (lookupByName0(libjvmName, javaThreadVt) != 0 ||
+            lookupByName0(libjvm_gName, javaThreadVt) != 0) {
             // old C++ ABI
             useGCC32ABI = false;
         } else {
@@ -360,7 +368,8 @@ public class BsdDebuggerLocal extends DebuggerBase implements BsdDebugger {
         }
 
         if (isCore) {
-            long addr = lookupByName0(objectName, symbol);
+            // MacOSX symbol with "_" as leading
+            long addr = lookupByName0(objectName, isDarwin ? "_" + symbol : symbol);
             return (addr == 0)? null : new BsdAddress(this, handleGCC32ABI(addr, symbol));
         } else {
             class LookupByNameTask implements WorkerThreadTask {
@@ -403,12 +412,12 @@ public class BsdDebuggerLocal extends DebuggerBase implements BsdDebugger {
     public ThreadProxy getThreadForIdentifierAddress(Address threadIdAddr, Address uniqueThreadIdAddr) {
         return new BsdThread(this, threadIdAddr, uniqueThreadIdAddr);
     }
+
     @Override
     public ThreadProxy getThreadForIdentifierAddress(Address addr) {
         throw new RuntimeException("unimplemented");
     }
 
-
     /** From the ThreadAccess interface via Debugger and JVMDebugger */
     public ThreadProxy getThreadForThreadId(long id) {
         return new BsdThread(this, id);
@@ -601,6 +610,33 @@ public class BsdDebuggerLocal extends DebuggerBase implements BsdDebugger {
         throw new DebuggerException("Unimplemented");
     }
 
+    /** this functions used for core file reading and called from native attach0,
+        it returns an array of long integers as
+        [thread_id, stack_start, stack_end, thread_id, stack_start, stack_end, ....] for
+        all java threads recorded in Threads. Also adds the ThreadProxy to threadList */
+    public long[] getJavaThreadsInfo() {
+        requireAttach();
+        Threads threads = VM.getVM().getThreads();
+        int len = threads.getNumberOfThreads();
+        long[] result = new long[len * 3];    // triple
+        JavaThread t = threads.first();
+        long beg, end;
+        int i = 0;
+        while (t != null) {
+            end = t.getStackBaseValue();
+            beg = end - t.getStackSize();
+            BsdThread bsdt = (BsdThread)t.getThreadProxy();
+            long uid = bsdt.getUniqueThreadId();
+            if (threadList != null) threadList.add(bsdt);
+            result[i] = uid;
+            result[i + 1] = beg;
+            result[i + 2] = end;
+            t = t.next();
+            i += 3;
+        }
+        return result;
+    }
+
     static {
         System.loadLibrary("saproc");
         init0();
diff --git a/agent/src/share/classes/sun/jvm/hotspot/debugger/bsd/BsdThread.java b/agent/src/share/classes/sun/jvm/hotspot/debugger/bsd/BsdThread.java
index f3351fb9c..0d637f30f 100644
--- a/agent/src/share/classes/sun/jvm/hotspot/debugger/bsd/BsdThread.java
+++ b/agent/src/share/classes/sun/jvm/hotspot/debugger/bsd/BsdThread.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, 2003, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -44,7 +44,8 @@ class BsdThread implements ThreadProxy {
 
     BsdThread(BsdDebugger debugger, long id) {
         this.debugger = debugger;
-        this.thread_id = (int) id;
+        // use unique_thread_id to identify thread
+        this.unique_thread_id = id;
     }
 
     public boolean equals(Object obj) {
@@ -52,7 +53,7 @@ class BsdThread implements ThreadProxy {
             return false;
         }
 
-        return (((BsdThread) obj).thread_id == thread_id);
+        return (((BsdThread) obj).unique_thread_id == unique_thread_id);
     }
 
     public int hashCode() {
@@ -80,4 +81,9 @@ class BsdThread implements ThreadProxy {
       throws IllegalThreadStateException, DebuggerException {
         throw new DebuggerException("Unimplemented");
     }
+
+    /** this is not interface function, used in core file to get unique thread id on Macosx*/
+    public long getUniqueThreadId() {
+        return unique_thread_id;
+    }
 }
diff --git a/agent/src/share/classes/sun/jvm/hotspot/oops/Oop.java b/agent/src/share/classes/sun/jvm/hotspot/oops/Oop.java
index ab81252d4..241e5be37 100644
--- a/agent/src/share/classes/sun/jvm/hotspot/oops/Oop.java
+++ b/agent/src/share/classes/sun/jvm/hotspot/oops/Oop.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -148,7 +148,7 @@ public class Oop {
     if (doVMFields) {
       visitor.doCInt(mark, true);
       if (VM.getVM().isCompressedKlassPointersEnabled()) {
-        throw new InternalError("unimplemented");
+        visitor.doMetadata(compressedKlass, true);
       } else {
         visitor.doMetadata(klass, true);
       }
diff --git a/agent/src/share/classes/sun/jvm/hotspot/runtime/JavaThread.java b/agent/src/share/classes/sun/jvm/hotspot/runtime/JavaThread.java
index 153d51bb0..926c11c4b 100644
--- a/agent/src/share/classes/sun/jvm/hotspot/runtime/JavaThread.java
+++ b/agent/src/share/classes/sun/jvm/hotspot/runtime/JavaThread.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -320,6 +320,10 @@ public class JavaThread extends Thread {
     return stackBaseField.getValue(addr);
   }
 
+  public long getStackBaseValue() {
+    return VM.getVM().getAddressValue(getStackBase());
+  }
+
   public long getStackSize() {
     return stackSizeField.getValue(addr);
   }
diff --git a/agent/src/share/classes/sun/jvm/hotspot/runtime/Threads.java b/agent/src/share/classes/sun/jvm/hotspot/runtime/Threads.java
index 8e259e3a1..b4b5903d1 100644
--- a/agent/src/share/classes/sun/jvm/hotspot/runtime/Threads.java
+++ b/agent/src/share/classes/sun/jvm/hotspot/runtime/Threads.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -42,6 +42,7 @@ import sun.jvm.hotspot.utilities.*;
 public class Threads {
     private static JavaThreadFactory threadFactory;
     private static AddressField      threadListField;
+    private static CIntegerField     numOfThreadsField;
     private static VirtualConstructor virtualConstructor;
     private static JavaThreadPDAccess access;
 
@@ -57,6 +58,7 @@ public class Threads {
         Type type = db.lookupType("Threads");
 
         threadListField = type.getAddressField("_thread_list");
+        numOfThreadsField = type.getCIntegerField("_number_of_threads");
 
         // Instantiate appropriate platform-specific JavaThreadFactory
         String os  = VM.getVM().getOS();
@@ -102,6 +104,10 @@ public class Threads {
             } else if (cpu.equals("amd64") || cpu.equals("x86_64")) {
                 access = new BsdAMD64JavaThreadPDAccess();
             }
+        } else if (os.equals("darwin")) {
+            if (cpu.equals("amd64") || cpu.equals("x86_64")) {
+                access = new BsdAMD64JavaThreadPDAccess();
+            }
         }
 
         if (access == null) {
@@ -144,6 +150,10 @@ public class Threads {
         return createJavaThreadWrapper(threadAddr);
     }
 
+    public int getNumberOfThreads() {
+        return (int) numOfThreadsField.getValue();
+    }
+
     /** Routine for instantiating appropriately-typed wrapper for a
       JavaThread. Currently needs to be public for OopUtilities to
       access it. */
diff --git a/agent/src/share/classes/sun/jvm/hotspot/tools/PStack.java b/agent/src/share/classes/sun/jvm/hotspot/tools/PStack.java
index 54aa0e0de..0b3720ff5 100644
--- a/agent/src/share/classes/sun/jvm/hotspot/tools/PStack.java
+++ b/agent/src/share/classes/sun/jvm/hotspot/tools/PStack.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -32,6 +32,7 @@ import sun.jvm.hotspot.debugger.*;
 import sun.jvm.hotspot.debugger.cdbg.*;
 import sun.jvm.hotspot.oops.*;
 import sun.jvm.hotspot.runtime.*;
+import sun.jvm.hotspot.utilities.PlatformInfo;
 
 public class PStack extends Tool {
     // in non-verbose mode, Method*s are not printed in java frames
@@ -54,6 +55,11 @@ public class PStack extends Tool {
    }
 
    public void run(PrintStream out, Debugger dbg) {
+      if (PlatformInfo.getOS().equals("darwin")) {
+        out.println("Not available on Darwin");
+        return;
+      }
+
       CDebugger cdbg = dbg.getCDebugger();
       if (cdbg != null) {
          ConcurrentLocksPrinter concLocksPrinter = null;
diff --git a/agent/src/share/classes/sun/jvm/hotspot/types/basic/BasicTypeDataBase.java b/agent/src/share/classes/sun/jvm/hotspot/types/basic/BasicTypeDataBase.java
index f88335c1b..123258631 100644
--- a/agent/src/share/classes/sun/jvm/hotspot/types/basic/BasicTypeDataBase.java
+++ b/agent/src/share/classes/sun/jvm/hotspot/types/basic/BasicTypeDataBase.java
@@ -24,10 +24,15 @@
 
 package sun.jvm.hotspot.types.basic;
 
-import java.util.*;
-import sun.jvm.hotspot.debugger.*;
-import sun.jvm.hotspot.types.*;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+
+import sun.jvm.hotspot.debugger.Address;
+import sun.jvm.hotspot.debugger.MachineDescription;
 import sun.jvm.hotspot.runtime.VM;
+import sun.jvm.hotspot.types.Type;
+import sun.jvm.hotspot.types.TypeDataBase;
 
 /** <P> This is a basic implementation of the TypeDataBase interface.
     It allows an external type database builder to add types to be
@@ -150,7 +155,7 @@ public class BasicTypeDataBase implements TypeDataBase {
     return VM.getVM().getOopSize();
   }
 
-  static HashMap typeToVtbl = new HashMap();
+  HashMap typeToVtbl = new HashMap();
 
   private Address vtblForType(Type type) {
     Address vtblAddr = (Address)typeToVtbl.get(type);
diff --git a/agent/src/share/classes/sun/jvm/hotspot/utilities/PlatformInfo.java b/agent/src/share/classes/sun/jvm/hotspot/utilities/PlatformInfo.java
index 9a5dc144a..afe81ef57 100644
--- a/agent/src/share/classes/sun/jvm/hotspot/utilities/PlatformInfo.java
+++ b/agent/src/share/classes/sun/jvm/hotspot/utilities/PlatformInfo.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -43,8 +43,8 @@ public class PlatformInfo {
       return "bsd";
     } else if (os.equals("OpenBSD")) {
       return "bsd";
-    } else if (os.equals("Darwin") || os.contains("OS X")) {
-      return "bsd";
+    } else if (os.contains("Darwin") || os.contains("OS X")) {
+      return "darwin";
     } else if (os.startsWith("Windows")) {
       return "win32";
     } else {
diff --git a/agent/src/share/native/sadis.c b/agent/src/share/native/sadis.c
index f8bd9adbd..926b4e5fd 100644
--- a/agent/src/share/native/sadis.c
+++ b/agent/src/share/native/sadis.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -48,7 +48,10 @@
 
 #include <string.h>
 #include <dlfcn.h>
+
+#ifndef __APPLE__
 #include <link.h>
+#endif
 
 #endif
 
@@ -109,9 +112,7 @@ JNIEXPORT jlong JNICALL Java_sun_jvm_hotspot_asm_Disassembler_load_1library(JNIE
                                                                            jstring libname_s) {
   uintptr_t func = 0;
   const char* error_message = NULL;
-  const char* java_home;
   jboolean isCopy;
-  uintptr_t *handle = NULL;
 
   const char * jrepath = (*env)->GetStringUTFChars(env, jrepath_s, &isCopy); // like $JAVA_HOME/jre/lib/sparc/
   const char * libname = (*env)->GetStringUTFChars(env, libname_s, &isCopy);
@@ -167,7 +168,8 @@ typedef void* (*decode_func)(uintptr_t start_va, uintptr_t end_va,
                              void* event_stream,
                              int (*printf_callback)(void*, const char*, ...),
                              void* printf_stream,
-                             const char* options);
+                             const char* options,
+                             int newline);
 
 /* container for call back state when decoding instructions */
 typedef struct {
@@ -281,7 +283,7 @@ JNIEXPORT void JNICALL Java_sun_jvm_hotspot_asm_Disassembler_decode(JNIEnv * env
                                                          end - start,
                                                          &event_to_env,  (void*) &denv,
                                                          &printf_to_env, (void*) &denv,
-                                                         options);
+                                                         options, 0 /* newline */);
 
   /* cleanup */
   (*env)->ReleaseByteArrayElements(env, code, start, JNI_ABORT);
diff --git a/make/Makefile b/make/Makefile
index c55574d82..8dad67f07 100644
--- a/make/Makefile
+++ b/make/Makefile
@@ -532,6 +532,39 @@ $(JDK_IMAGE_DIR)/jre/lib/rt.jar:
 	 $(TAR) -cf - *) | \
 	 ($(CD) $(JDK_IMAGE_DIR) && $(TAR) -xf -)
 
+
+# Testing the built JVM
+RUN_JVM=JAVA_HOME=$(JDK_IMPORT_PATH) $(JDK_IMPORT_PATH)/bin/java -d$(ARCH_DATA_MODEL) -Dsun.java.launcher=gamma
+generic_test:
+	@$(ECHO) "Running with: $(ALTJVM_DIR)"
+	@$(RUN_JVM) -XXaltjvm=$(ALTJVM_DIR) -Xinternalversion
+	@$(RUN_JVM) -XXaltjvm=$(ALTJVM_DIR) -showversion -help
+
+# C2 test targets
+test_product test_optimized test_fastdebug test_jvmg:
+	@$(MAKE) generic_test ALTJVM_DIR="$(C2_DIR)/$(@:test_%=%)"
+
+# C1 test targets
+test_product1 test_optimized1 test_fastdebug1 test_jvmg1:
+  ifeq ($(ARCH_DATA_MODEL), 32)
+	@$(MAKE) generic_test ALTJVM_DIR="$(C1_DIR)/$(@:test_%1=%)"
+  else
+	@$(ECHO) "No compiler1 ($(@:test_%=%)) for ARCH_DATA_MODEL=$(ARCH_DATA_MODEL)"
+  endif
+
+# Zero test targets
+test_productzero test_optimizedzero test_fastdebugzero test_jvmgzero:
+	@$(MAKE) generic_test ALTJVM_DIR="$(ZERO_DIR)/$(@:test_%zero=%)"
+
+# Shark test targets
+test_productshark test_optimizedshark test_fastdebugshark test_jvmgshark:
+	@$(MAKE) generic_test ALTJVM_DIR="$(SHARK_DIR)/$(@:test_%shark=%)"
+
+# Minimal1 test targets
+test_productminimal1 test_optimizedminimal1 test_fastdebugminimal1 test_jvmgminimal1:
+	@$(MAKE) generic_test ALTJVM_DIR="$(MINIMAL1_DIR)/$(@:test_%minimal1=%)"
+
+
 test_jdk:
   ifeq ($(JVM_VARIANT_CLIENT), true)
 	$(JDK_IMAGE_DIR)/bin/java -d$(ARCH_DATA_MODEL) -client -Xinternalversion
diff --git a/make/bsd/Makefile b/make/bsd/Makefile
index e95bb0550..024aef9cb 100644
--- a/make/bsd/Makefile
+++ b/make/bsd/Makefile
@@ -299,63 +299,42 @@ platform_zero: $(GAMMADIR)/make/$(OSNAME)/platform_zero.in
 
 $(TARGETS_C2):  $(SUBDIRS_C2)
 	cd $(OSNAME)_$(BUILDARCH)_compiler2/$@ && $(MAKE) $(MFLAGS)
-ifeq ($(TEST_IN_BUILD),true)
-	cd $(OSNAME)_$(BUILDARCH)_compiler2/$@ && ./test_gamma
-endif
 ifdef INSTALL
 	cd $(OSNAME)_$(BUILDARCH)_compiler2/$@ && $(MAKE) $(MFLAGS) install
 endif
 
 $(TARGETS_TIERED):  $(SUBDIRS_TIERED)
 	cd $(OSNAME)_$(BUILDARCH)_tiered/$(patsubst %tiered,%,$@) && $(MAKE) $(MFLAGS)
-ifeq ($(TEST_IN_BUILD),true)
-	cd $(OSNAME)_$(BUILDARCH)_tiered/$(patsubst %tiered,%,$@) && ./test_gamma
-endif
 ifdef INSTALL
 	cd $(OSNAME)_$(BUILDARCH)_tiered/$(patsubst %tiered,%,$@) && $(MAKE) $(MFLAGS) install
 endif
 
 $(TARGETS_C1):  $(SUBDIRS_C1)
 	cd $(OSNAME)_$(BUILDARCH)_compiler1/$(patsubst %1,%,$@) && $(MAKE) $(MFLAGS)
-ifeq ($(TEST_IN_BUILD),true)
-	cd $(OSNAME)_$(BUILDARCH)_compiler1/$(patsubst %1,%,$@) && ./test_gamma
-endif
 ifdef INSTALL
 	cd $(OSNAME)_$(BUILDARCH)_compiler1/$(patsubst %1,%,$@) && $(MAKE) $(MFLAGS) install
 endif
 
 $(TARGETS_CORE):  $(SUBDIRS_CORE)
 	cd $(OSNAME)_$(BUILDARCH)_core/$(patsubst %core,%,$@) && $(MAKE) $(MFLAGS)
-ifeq ($(TEST_IN_BUILD),true)
-	cd $(OSNAME)_$(BUILDARCH)_core/$(patsubst %core,%,$@) && ./test_gamma
-endif
 ifdef INSTALL
 	cd $(OSNAME)_$(BUILDARCH)_core/$(patsubst %core,%,$@) && $(MAKE) $(MFLAGS) install
 endif
 
 $(TARGETS_ZERO):  $(SUBDIRS_ZERO)
 	cd $(OSNAME)_$(VARIANTARCH)_zero/$(patsubst %zero,%,$@) && $(MAKE) $(MFLAGS)
-ifeq ($(TEST_IN_BUILD),true)
-	cd $(OSNAME)_$(VARIANTARCH)_zero/$(patsubst %zero,%,$@) && ./test_gamma
-endif
 ifdef INSTALL
 	cd $(OSNAME)_$(VARIANTARCH)_zero/$(patsubst %zero,%,$@) && $(MAKE) $(MFLAGS) install
 endif
 
 $(TARGETS_SHARK):  $(SUBDIRS_SHARK)
 	cd $(OSNAME)_$(VARIANTARCH)_shark/$(patsubst %shark,%,$@) && $(MAKE) $(MFLAGS)
-ifeq ($(TEST_IN_BUILD),true)
-	cd $(OSNAME)_$(VARIANTARCH)_shark/$(patsubst %shark,%,$@) && ./test_gamma
-endif
 ifdef INSTALL
 	cd $(OSNAME)_$(VARIANTARCH)_shark/$(patsubst %shark,%,$@) && $(MAKE) $(MFLAGS) install
 endif
 
 $(TARGETS_MINIMAL1):  $(SUBDIRS_MINIMAL1)
 	cd $(OSNAME)_$(BUILDARCH)_minimal1/$(patsubst %minimal1,%,$@) && $(MAKE) $(MFLAGS)
-ifeq ($(TEST_IN_BUILD),true)
-	cd $(OSNAME)_$(BUILDARCH)_minimal1/$(patsubst %minimal1,%,$@) && ./test_gamma
-endif
 ifdef INSTALL
 	cd $(OSNAME)_$(BUILDARCH)_minimal1/$(patsubst %minimal1,%,$@) && $(MAKE) $(MFLAGS) install
 endif
diff --git a/make/bsd/makefiles/buildtree.make b/make/bsd/makefiles/buildtree.make
index b8d92f6a4..71bb04b98 100644
--- a/make/bsd/makefiles/buildtree.make
+++ b/make/bsd/makefiles/buildtree.make
@@ -50,7 +50,6 @@
 # jvmti.make	- generate JVMTI bindings from the spec (JSR-163)
 # sa.make	- generate SA jar file and natives
 # env.[ck]sh	- environment settings
-# test_gamma	- script to run the Queens program
 # 
 # The makefiles are split this way so that "make foo" will run faster by not
 # having to read the dependency files for the vm.
@@ -67,9 +66,6 @@ include $(GAMMADIR)/make/altsrc.make
 # 'gmake MAKE_VERBOSE=y' or 'gmake QUIETLY=' gives all the gory details.
 QUIETLY$(MAKE_VERBOSE)	= @
 
-# For now, until the compiler is less wobbly:
-TESTFLAGS	= -Xbatch -showversion
-
 ifeq ($(findstring true, $(JVM_VARIANT_ZERO) $(JVM_VARIANT_ZEROSHARK)), true)
   PLATFORM_FILE = $(shell dirname $(shell dirname $(shell pwd)))/platform_zero
 else
@@ -135,7 +131,7 @@ BUILDTREE_MAKE	= $(GAMMADIR)/make/$(OS_FAMILY)/makefiles/buildtree.make
 # dtrace.make is used on BSD versions that implement Dtrace (like MacOS X)
 BUILDTREE_TARGETS = Makefile flags.make flags_vm.make vm.make adlc.make \
 	jvmti.make sa.make dtrace.make \
-        env.sh env.csh jdkpath.sh .dbxrc test_gamma
+        env.sh env.csh jdkpath.sh
 
 BUILDTREE_VARS	= GAMMADIR=$(GAMMADIR) OS_FAMILY=$(OS_FAMILY) \
 	SRCARCH=$(SRCARCH) BUILDARCH=$(BUILDARCH) LIBARCH=$(LIBARCH) VARIANT=$(VARIANT)
@@ -352,7 +348,7 @@ env.sh: $(BUILDTREE_MAKE)
 	@echo Creating $@ ...
 	$(QUIETLY) ( \
 	$(BUILDTREE_COMMENT); \
-	[ -n "$$JAVA_HOME" ] && { echo ": \$${JAVA_HOME:=$${JAVA_HOME}}"; }; \
+	{ echo "JAVA_HOME=$(JDK_IMPORT_PATH)"; }; \
 	{ \
 	echo "CLASSPATH=$${CLASSPATH:+$$CLASSPATH:}.:\$${JAVA_HOME}/jre/lib/rt.jar:\$${JAVA_HOME}/jre/lib/i18n.jar"; \
 	} | sed s:$${JAVA_HOME:--------}:\$${JAVA_HOME}:g; \
@@ -364,8 +360,7 @@ env.csh: env.sh
 	@echo Creating $@ ...
 	$(QUIETLY) ( \
 	$(BUILDTREE_COMMENT); \
-	[ -n "$$JAVA_HOME" ] && \
-	{ echo "if (! \$$?JAVA_HOME) setenv JAVA_HOME \"$$JAVA_HOME\""; }; \
+	{ echo "setenv JAVA_HOME \"$(JDK_IMPORT_PATH)\""; }; \
 	sed -n 's/^\([A-Za-z_][A-Za-z0-9_]*\)=/setenv \1 /p' $?; \
 	) > $@
 
@@ -376,119 +371,6 @@ jdkpath.sh: $(BUILDTREE_MAKE)
 	echo "JDK=${JAVA_HOME}"; \
 	) > $@	   
 
-.dbxrc:  $(BUILDTREE_MAKE)
-	@echo Creating $@ ...
-	$(QUIETLY) ( \
-	echo "echo '# Loading $(PLATFORM_DIR)/$(TARGET)/.dbxrc'"; \
-	echo "if [ -f \"\$${HOTSPOT_DBXWARE}\" ]"; \
-	echo "then"; \
-	echo "	source \"\$${HOTSPOT_DBXWARE}\""; \
-	echo "elif [ -f \"\$$HOME/.dbxrc\" ]"; \
-	echo "then"; \
-	echo "	source \"\$$HOME/.dbxrc\""; \
-	echo "fi"; \
-	) > $@
-
-# Skip the test for product builds (which only work when installed in a JDK), to
-# avoid exiting with an error and causing make to halt.
-NO_TEST_MSG	= \
-	echo "$@:  skipping the test--this build must be tested in a JDK."
-
-NO_JAVA_HOME_MSG	= \
-	echo "JAVA_HOME must be set to run this test."
-
-DATA_MODE = $(DATA_MODE/$(BUILDARCH))
-JAVA_FLAG = $(JAVA_FLAG/$(DATA_MODE))
-
-DATA_MODE/i486    = 32
-DATA_MODE/sparc   = 32
-DATA_MODE/sparcv9 = 64
-DATA_MODE/amd64   = 64
-DATA_MODE/ia64    = 64
-DATA_MODE/zero    = $(ARCH_DATA_MODEL)
-
-JAVA_FLAG/32 = -d32
-JAVA_FLAG/64 = -d64
-
-WRONG_DATA_MODE_MSG = \
-	echo "JAVA_HOME must point to a $(DATA_MODE)-bit OpenJDK."
-
-CROSS_COMPILING_MSG = \
-	echo "Cross compiling for ARCH $(CROSS_COMPILE_ARCH), skipping gamma run."
-
-test_gamma:  $(BUILDTREE_MAKE) $(GAMMADIR)/make/test/Queens.java
-	@echo Creating $@ ...
-	$(QUIETLY) ( \
-	echo "#!/bin/sh"; \
-	echo ""; \
-	$(BUILDTREE_COMMENT); \
-	echo ""; \
-	echo "# Include environment settings for gamma run"; \
-	echo ""; \
-	echo ". ./env.sh"; \
-	echo ""; \
-	echo "# Do not run gamma test for cross compiles"; \
-	echo ""; \
-	echo "if [ -n \"$(CROSS_COMPILE_ARCH)\" ]; then "; \
-	echo "  $(CROSS_COMPILING_MSG)"; \
-	echo "  exit 0"; \
-	echo "fi"; \
-	echo ""; \
-	echo "# Make sure JAVA_HOME is set as it is required for gamma"; \
-	echo ""; \
-	echo "if [ -z \"\$${JAVA_HOME}\" ]; then "; \
-	echo "  $(NO_JAVA_HOME_MSG)"; \
-	echo "  exit 0"; \
-	echo "fi"; \
-	echo ""; \
-	echo "# Check JAVA_HOME version to be used for the test"; \
-	echo ""; \
-	echo "\$${JAVA_HOME}/bin/java $(JAVA_FLAG) -fullversion > /dev/null 2>&1"; \
-	echo "if [ \$$? -ne 0 ]; then "; \
-	echo "  $(WRONG_DATA_MODE_MSG)"; \
-	echo "  exit 0"; \
-	echo "fi"; \
-	echo ""; \
-	echo "GAMMA_PROG=gamma"; \
-	echo ""; \
-	echo "if [ \"$(OS_VENDOR)\" = \"Darwin\" ]; then "; \
-	echo "  # Ensure architecture for gamma and JAVA_HOME is the same."; \
-	echo "  # NOTE: gamma assumes the OpenJDK directory layout."; \
-	echo ""; \
-	echo "  GAMMA_ARCH=\"\`file \$${GAMMA_PROG} | awk '{print \$$NF}'\`\""; \
-	echo "  JVM_LIB=\"\$${JAVA_HOME}/jre/lib/libjava.$(LIBRARY_SUFFIX)\""; \
-	echo "  if [ ! -f \$${JVM_LIB} ]; then"; \
-	echo "    JVM_LIB=\"\$${JAVA_HOME}/jre/lib/$${LIBARCH}/libjava.$(LIBRARY_SUFFIX)\""; \
-	echo "  fi"; \
-	echo "  if [ ! -f \$${JVM_LIB} ] || [ -z \"\`file \$${JVM_LIB} | grep \$${GAMMA_ARCH}\`\" ]; then "; \
-	echo "    $(WRONG_DATA_MODE_MSG)"; \
-	echo "    exit 0"; \
-	echo "  fi"; \
-	echo "fi"; \
-	echo ""; \
-	echo "# Compile Queens program for test"; \
-	echo ""; \
-	echo "rm -f Queens.class"; \
-	echo "\$${JAVA_HOME}/bin/javac -d . $(GAMMADIR)/make/test/Queens.java"; \
-	echo ""; \
-	echo "# Set library path solely for gamma launcher test run"; \
-	echo ""; \
-	echo "LD_LIBRARY_PATH=.:$${LD_LIBRARY_PATH:+$$LD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/${LIBARCH}/native_threads:\$${JAVA_HOME}/jre/lib/${LIBARCH}:${GCC_LIB}"; \
-	echo "export LD_LIBRARY_PATH"; \
-	echo "unset LD_LIBRARY_PATH_32"; \
-	echo "unset LD_LIBRARY_PATH_64"; \
-	echo ""; \
-	echo "if [ \"$(OS_VENDOR)\" = \"Darwin\" ]; then "; \
-	echo "  DYLD_LIBRARY_PATH=.:$${DYLD_LIBRARY_PATH:+$$DYLD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/native_threads:\$${JAVA_HOME}/jre/lib:$${DYLD_LIBRARY_PATH:+$$DYLD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/${LIBARCH}/native_threads:\$${JAVA_HOME}/jre/lib/${LIBARCH}:${GCC_LIB}"; \
-	echo "  export DYLD_LIBRARY_PATH"; \
-	echo "fi"; \
-	echo ""; \
-	echo "# Use the gamma launcher and JAVA_HOME to run the test"; \
-	echo ""; \
-	echo "./\$${GAMMA_PROG} $(TESTFLAGS) Queens < /dev/null"; \
-	) > $@
-	$(QUIETLY) chmod +x $@
-
 FORCE:
 
 .PHONY:  all FORCE
diff --git a/make/bsd/makefiles/saproc.make b/make/bsd/makefiles/saproc.make
index 4fb216b41..62e31a63d 100644
--- a/make/bsd/makefiles/saproc.make
+++ b/make/bsd/makefiles/saproc.make
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -24,7 +24,7 @@
 
 # Rules to build serviceability agent library, used by vm.make
 
-# libsaproc.so: serviceability agent
+# libsaproc.so(dylib): serviceability agent
 SAPROC   = saproc
 
 ifeq ($(OS_VENDOR), Darwin)
@@ -37,7 +37,7 @@ AGENT_DIR = $(GAMMADIR)/agent
 
 SASRCDIR = $(AGENT_DIR)/src/os/$(Platform_os_family)
 
-NON_STUB_SASRCFILES = $(SASRCDIR)/salibelf.c                 \
+BSD_NON_STUB_SASRCFILES = $(SASRCDIR)/salibelf.c             \
                       $(SASRCDIR)/symtab.c                   \
                       $(SASRCDIR)/libproc_impl.c             \
                       $(SASRCDIR)/ps_proc.c                  \
@@ -45,13 +45,19 @@ NON_STUB_SASRCFILES = $(SASRCDIR)/salibelf.c                 \
                       $(SASRCDIR)/BsdDebuggerLocal.c         \
                       $(AGENT_DIR)/src/share/native/sadis.c
 
+DARWIN_NON_STUB_SASRCFILES = $(SASRCDIR)/symtab.c            \
+                      $(SASRCDIR)/libproc_impl.c             \
+                      $(SASRCDIR)/ps_core.c                  \
+                      $(SASRCDIR)/MacosxDebuggerLocal.m      \
+                      $(AGENT_DIR)/src/share/native/sadis.c
+
 ifeq ($(OS_VENDOR), FreeBSD)
-  SASRCFILES = $(NON_STUB_SASRCFILES)
+  SASRCFILES = $(BSD_NON_STUB_SASRCFILES)
   SALIBS = -lutil -lthread_db
   SAARCH = $(ARCHFLAG)
 else
   ifeq ($(OS_VENDOR), Darwin)
-    SASRCFILES = $(SASRCDIR)/MacosxDebuggerLocal.m
+    SASRCFILES = $(DARWIN_NON_STUB_SASRCFILES)
     SALIBS = -g -framework Foundation -F/System/Library/Frameworks/JavaVM.framework/Frameworks -framework JavaNativeFoundation -framework Security -framework CoreFoundation
     #objc compiler blows up on -march=i586, perhaps it should not be included in the macosx intel 32-bit C++ compiles?
     SAARCH = $(subst -march=i586,,$(ARCHFLAG))
@@ -102,7 +108,7 @@ $(LIBSAPROC): $(SASRCFILES) $(SAMAPFILE)
 	fi
 	@echo Making SA debugger back-end...
 	$(QUIETLY) $(CC) -D$(BUILDARCH) -D_GNU_SOURCE                   \
-                   $(SYMFLAG) $(SAARCH) $(SHARED_FLAG) $(PICFLAG)     \
+	           $(SYMFLAG) $(SAARCH) $(SHARED_FLAG) $(PICFLAG)       \
 	           -I$(SASRCDIR)                                        \
 	           -I$(GENERATED)                                       \
 	           $(BOOT_JAVA_INCLUDES)                                \
diff --git a/make/defs.make b/make/defs.make
index 3d86ed70e..4e4c2cb01 100644
--- a/make/defs.make
+++ b/make/defs.make
@@ -302,7 +302,7 @@ ifneq ($(OSNAME),windows)
 endif
 
 # Required make macro settings for all platforms
-MAKE_ARGS += JAVA_HOME=$(ABS_BOOTDIR)
+MAKE_ARGS += BOOTDIR=$(ABS_BOOTDIR)
 MAKE_ARGS += OUTPUTDIR=$(ABS_OUTPUTDIR)
 MAKE_ARGS += GAMMADIR=$(ABS_GAMMADIR)
 MAKE_ARGS += MAKE_VERBOSE=$(MAKE_VERBOSE)
@@ -337,9 +337,6 @@ EXPORT_LIST += $(EXPORT_INCLUDE_DIR)/jni.h
 EXPORT_LIST += $(EXPORT_INCLUDE_DIR)/$(JDK_INCLUDE_SUBDIR)/jni_md.h
 EXPORT_LIST += $(EXPORT_INCLUDE_DIR)/jmm.h
 
-# By default, run Queens test after building
-TEST_IN_BUILD ?= true
-
 ifndef JAVASE_EMBEDDED
 EXPORT_LIST += $(EXPORT_INCLUDE_DIR)/jfr.h
 endif
diff --git a/make/hotspot_version b/make/hotspot_version
index 28b5a9a11..69b8ad849 100644
--- a/make/hotspot_version
+++ b/make/hotspot_version
@@ -35,7 +35,7 @@ HOTSPOT_VM_COPYRIGHT=Copyright 2013
 
 HS_MAJOR_VER=25
 HS_MINOR_VER=0
-HS_BUILD_NUMBER=23
+HS_BUILD_NUMBER=24
 
 JDK_MAJOR_VER=1
 JDK_MINOR_VER=8
diff --git a/make/jprt.properties b/make/jprt.properties
index fa65aa1bc..8bf107758 100644
--- a/make/jprt.properties
+++ b/make/jprt.properties
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2006, 2012, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -97,15 +97,18 @@ jprt.my.linux.ppcsflt.jdk7=linux_ppcsflt_2.6
 jprt.my.linux.ppcsflt.jdk7u8=${jprt.my.linux.ppcsflt.jdk7}
 jprt.my.linux.ppcsflt=${jprt.my.linux.ppcsflt.${jprt.tools.default.release}}
 
-jprt.my.linux.armvfp.jdk8=linux_armvfp_2.6
-jprt.my.linux.armvfp.jdk7=linux_armvfp_2.6
-jprt.my.linux.armvfp.jdk7u8=${jprt.my.linux.armvfp.jdk7}
-jprt.my.linux.armvfp=${jprt.my.linux.armvfp.${jprt.tools.default.release}}
+jprt.my.linux.armvfpsflt.jdk8=linux_armvfpsflt_2.6
+jprt.my.linux.armvfpsflt=${jprt.my.linux.armvfpsflt.${jprt.tools.default.release}}
 
-jprt.my.linux.armv6.jdk8=linux_armv6_2.6
-jprt.my.linux.armv6.jdk7=linux_armv6_2.6
-jprt.my.linux.armv6.jdk7u8=${jprt.my.linux.armv6.jdk7}
-jprt.my.linux.armv6=${jprt.my.linux.armv6.${jprt.tools.default.release}}
+jprt.my.linux.armvfphflt.jdk8=linux_armvfphflt_2.6
+jprt.my.linux.armvfphflt=${jprt.my.linux.armvfphflt.${jprt.tools.default.release}}
+
+# The ARM GP vfp-sflt build is not currently supported
+#jprt.my.linux.armvs.jdk8=linux_armvs_2.6
+#jprt.my.linux.armvs=${jprt.my.linux.armvs.${jprt.tools.default.release}}
+
+jprt.my.linux.armvh.jdk8=linux_armvh_2.6
+jprt.my.linux.armvh=${jprt.my.linux.armvh.${jprt.tools.default.release}}
 
 jprt.my.linux.armsflt.jdk8=linux_armsflt_2.6
 jprt.my.linux.armsflt.jdk7=linux_armsflt_2.6
@@ -139,7 +142,7 @@ jprt.build.targets.standard= \
     ${jprt.my.macosx.x64}-{product|fastdebug|debug}, \
     ${jprt.my.windows.i586}-{product|fastdebug|debug}, \
     ${jprt.my.windows.x64}-{product|fastdebug|debug}, \
-    ${jprt.my.linux.armv6}-{product|fastdebug}
+    ${jprt.my.linux.armvh}-{product|fastdebug}
 
 jprt.build.targets.open= \
     ${jprt.my.solaris.i586}-{productOpen}, \
@@ -151,7 +154,8 @@ jprt.build.targets.embedded= \
     ${jprt.my.linux.ppc}-{productEmb|fastdebugEmb}, \
     ${jprt.my.linux.ppcv2}-{productEmb|fastdebugEmb}, \
     ${jprt.my.linux.ppcsflt}-{productEmb|fastdebugEmb}, \
-    ${jprt.my.linux.armvfp}-{productEmb|fastdebugEmb}, \
+    ${jprt.my.linux.armvfpsflt}-{productEmb|fastdebugEmb}, \
+    ${jprt.my.linux.armvfphflt}-{productEmb|fastdebugEmb}, \
     ${jprt.my.linux.armsflt}-{productEmb|fastdebugEmb}
 
 jprt.build.targets.all=${jprt.build.targets.standard}, \
diff --git a/make/linux/Makefile b/make/linux/Makefile
index e8ef90718..04d0b8e5c 100644
--- a/make/linux/Makefile
+++ b/make/linux/Makefile
@@ -300,63 +300,42 @@ platform_zero: $(GAMMADIR)/make/$(OSNAME)/platform_zero.in
 
 $(TARGETS_C2):  $(SUBDIRS_C2)
 	cd $(OSNAME)_$(BUILDARCH)_compiler2/$@ && $(MAKE) $(MFLAGS)
-ifeq ($(TEST_IN_BUILD),true)
-	cd $(OSNAME)_$(BUILDARCH)_compiler2/$@ && ./test_gamma
-endif
 ifdef INSTALL
 	cd $(OSNAME)_$(BUILDARCH)_compiler2/$@ && $(MAKE) $(MFLAGS) install
 endif
 
 $(TARGETS_TIERED):  $(SUBDIRS_TIERED)
 	cd $(OSNAME)_$(BUILDARCH)_tiered/$(patsubst %tiered,%,$@) && $(MAKE) $(MFLAGS)
-ifeq ($(TEST_IN_BUILD),true)
-	cd $(OSNAME)_$(BUILDARCH)_tiered/$(patsubst %tiered,%,$@) && ./test_gamma
-endif
 ifdef INSTALL
 	cd $(OSNAME)_$(BUILDARCH)_tiered/$(patsubst %tiered,%,$@) && $(MAKE) $(MFLAGS) install
 endif
 
 $(TARGETS_C1):  $(SUBDIRS_C1)
 	cd $(OSNAME)_$(BUILDARCH)_compiler1/$(patsubst %1,%,$@) && $(MAKE) $(MFLAGS)
-ifeq ($(TEST_IN_BUILD),true)
-	cd $(OSNAME)_$(BUILDARCH)_compiler1/$(patsubst %1,%,$@) && ./test_gamma
-endif
 ifdef INSTALL
 	cd $(OSNAME)_$(BUILDARCH)_compiler1/$(patsubst %1,%,$@) && $(MAKE) $(MFLAGS) install
 endif
 
 $(TARGETS_CORE):  $(SUBDIRS_CORE)
 	cd $(OSNAME)_$(BUILDARCH)_core/$(patsubst %core,%,$@) && $(MAKE) $(MFLAGS)
-ifeq ($(TEST_IN_BUILD),true)
-	cd $(OSNAME)_$(BUILDARCH)_core/$(patsubst %core,%,$@) && ./test_gamma
-endif
 ifdef INSTALL
 	cd $(OSNAME)_$(BUILDARCH)_core/$(patsubst %core,%,$@) && $(MAKE) $(MFLAGS) install
 endif
 
 $(TARGETS_ZERO):  $(SUBDIRS_ZERO)
 	cd $(OSNAME)_$(VARIANTARCH)_zero/$(patsubst %zero,%,$@) && $(MAKE) $(MFLAGS)
-ifeq ($(TEST_IN_BUILD),true)
-	cd $(OSNAME)_$(VARIANTARCH)_zero/$(patsubst %zero,%,$@) && ./test_gamma
-endif
 ifdef INSTALL
 	cd $(OSNAME)_$(VARIANTARCH)_zero/$(patsubst %zero,%,$@) && $(MAKE) $(MFLAGS) install
 endif
 
 $(TARGETS_SHARK):  $(SUBDIRS_SHARK)
 	cd $(OSNAME)_$(VARIANTARCH)_shark/$(patsubst %shark,%,$@) && $(MAKE) $(MFLAGS)
-ifeq ($(TEST_IN_BUILD),true)
-	cd $(OSNAME)_$(VARIANTARCH)_shark/$(patsubst %shark,%,$@) && ./test_gamma
-endif
 ifdef INSTALL
 	cd $(OSNAME)_$(VARIANTARCH)_shark/$(patsubst %shark,%,$@) && $(MAKE) $(MFLAGS) install
 endif
 
 $(TARGETS_MINIMAL1):  $(SUBDIRS_MINIMAL1)
 	cd $(OSNAME)_$(BUILDARCH)_minimal1/$(patsubst %minimal1,%,$@) && $(MAKE) $(MFLAGS)
-ifeq ($(TEST_IN_BUILD),true)
-	cd $(OSNAME)_$(BUILDARCH)_minimal1/$(patsubst %minimal1,%,$@) && ./test_gamma
-endif
 ifdef INSTALL
 	cd $(OSNAME)_$(BUILDARCH)_minimal1/$(patsubst %minimal1,%,$@) && $(MAKE) $(MFLAGS) install
 endif
diff --git a/make/linux/makefiles/buildtree.make b/make/linux/makefiles/buildtree.make
index 960b8f316..b75b4d578 100644
--- a/make/linux/makefiles/buildtree.make
+++ b/make/linux/makefiles/buildtree.make
@@ -50,7 +50,6 @@
 # jvmti.make	- generate JVMTI bindings from the spec (JSR-163)
 # sa.make	- generate SA jar file and natives
 # env.[ck]sh	- environment settings
-# test_gamma	- script to run the Queens program
 # 
 # The makefiles are split this way so that "make foo" will run faster by not
 # having to read the dependency files for the vm.
@@ -64,9 +63,6 @@ include $(GAMMADIR)/make/altsrc.make
 # 'gmake MAKE_VERBOSE=y' or 'gmake QUIETLY=' gives all the gory details.
 QUIETLY$(MAKE_VERBOSE)	= @
 
-# For now, until the compiler is less wobbly:
-TESTFLAGS	= -Xbatch -showversion
-
 ifeq ($(findstring true, $(JVM_VARIANT_ZERO) $(JVM_VARIANT_ZEROSHARK)), true)
   PLATFORM_FILE = $(shell dirname $(shell dirname $(shell pwd)))/platform_zero
 else
@@ -128,7 +124,7 @@ SUBMAKE_DIRS = $(addprefix $(PLATFORM_DIR)/,$(TARGETS))
 BUILDTREE_MAKE	= $(GAMMADIR)/make/$(OS_FAMILY)/makefiles/buildtree.make
 
 BUILDTREE_TARGETS = Makefile flags.make flags_vm.make vm.make adlc.make jvmti.make sa.make \
-        env.sh env.csh jdkpath.sh .dbxrc test_gamma
+        env.sh env.csh jdkpath.sh
 
 BUILDTREE_VARS	= GAMMADIR=$(GAMMADIR) OS_FAMILY=$(OS_FAMILY) \
 	SRCARCH=$(SRCARCH) BUILDARCH=$(BUILDARCH) LIBARCH=$(LIBARCH) VARIANT=$(VARIANT)
@@ -345,7 +341,7 @@ env.sh: $(BUILDTREE_MAKE)
 	@echo Creating $@ ...
 	$(QUIETLY) ( \
 	$(BUILDTREE_COMMENT); \
-	[ -n "$$JAVA_HOME" ] && { echo ": \$${JAVA_HOME:=$${JAVA_HOME}}"; }; \
+	{ echo "JAVA_HOME=$(JDK_IMPORT_PATH)"; }; \
 	{ \
 	echo "CLASSPATH=$${CLASSPATH:+$$CLASSPATH:}.:\$${JAVA_HOME}/jre/lib/rt.jar:\$${JAVA_HOME}/jre/lib/i18n.jar"; \
 	} | sed s:$${JAVA_HOME:--------}:\$${JAVA_HOME}:g; \
@@ -357,8 +353,7 @@ env.csh: env.sh
 	@echo Creating $@ ...
 	$(QUIETLY) ( \
 	$(BUILDTREE_COMMENT); \
-	[ -n "$$JAVA_HOME" ] && \
-	{ echo "if (! \$$?JAVA_HOME) setenv JAVA_HOME \"$$JAVA_HOME\""; }; \
+	{ echo "setenv JAVA_HOME \"$(JDK_IMPORT_PATH)\""; }; \
 	sed -n 's/^\([A-Za-z_][A-Za-z0-9_]*\)=/setenv \1 /p' $?; \
 	) > $@
 
@@ -369,119 +364,6 @@ jdkpath.sh: $(BUILDTREE_MAKE)
 	echo "JDK=${JAVA_HOME}"; \
 	) > $@	   
 
-.dbxrc:  $(BUILDTREE_MAKE)
-	@echo Creating $@ ...
-	$(QUIETLY) ( \
-	echo "echo '# Loading $(PLATFORM_DIR)/$(TARGET)/.dbxrc'"; \
-	echo "if [ -f \"\$${HOTSPOT_DBXWARE}\" ]"; \
-	echo "then"; \
-	echo "	source \"\$${HOTSPOT_DBXWARE}\""; \
-	echo "elif [ -f \"\$$HOME/.dbxrc\" ]"; \
-	echo "then"; \
-	echo "	source \"\$$HOME/.dbxrc\""; \
-	echo "fi"; \
-	) > $@
-
-# Skip the test for product builds (which only work when installed in a JDK), to
-# avoid exiting with an error and causing make to halt.
-NO_TEST_MSG	= \
-	echo "$@:  skipping the test--this build must be tested in a JDK."
-
-NO_JAVA_HOME_MSG	= \
-	echo "JAVA_HOME must be set to run this test."
-
-DATA_MODE = $(DATA_MODE/$(BUILDARCH))
-JAVA_FLAG = $(JAVA_FLAG/$(DATA_MODE))
-
-DATA_MODE/i486    = 32
-DATA_MODE/sparc   = 32
-DATA_MODE/sparcv9 = 64
-DATA_MODE/amd64   = 64
-DATA_MODE/ia64    = 64
-DATA_MODE/zero    = $(ARCH_DATA_MODEL)
-
-JAVA_FLAG/32 = -d32
-JAVA_FLAG/64 = -d64
-
-WRONG_DATA_MODE_MSG = \
-	echo "JAVA_HOME must point to a $(DATA_MODE)-bit OpenJDK."
-
-CROSS_COMPILING_MSG = \
-	echo "Cross compiling for ARCH $(CROSS_COMPILE_ARCH), skipping gamma run."
-
-test_gamma:  $(BUILDTREE_MAKE) $(GAMMADIR)/make/test/Queens.java
-	@echo Creating $@ ...
-	$(QUIETLY) ( \
-	echo "#!/bin/sh"; \
-	echo ""; \
-	$(BUILDTREE_COMMENT); \
-	echo ""; \
-	echo "# Include environment settings for gamma run"; \
-	echo ""; \
-	echo ". ./env.sh"; \
-	echo ""; \
-	echo "# Do not run gamma test for cross compiles"; \
-	echo ""; \
-	echo "if [ -n \"$(CROSS_COMPILE_ARCH)\" ]; then "; \
-	echo "  $(CROSS_COMPILING_MSG)"; \
-	echo "  exit 0"; \
-	echo "fi"; \
-	echo ""; \
-	echo "# Make sure JAVA_HOME is set as it is required for gamma"; \
-	echo ""; \
-	echo "if [ -z \"\$${JAVA_HOME}\" ]; then "; \
-	echo "  $(NO_JAVA_HOME_MSG)"; \
-	echo "  exit 0"; \
-	echo "fi"; \
-	echo ""; \
-	echo "# Check JAVA_HOME version to be used for the test"; \
-	echo ""; \
-	echo "\$${JAVA_HOME}/bin/java $(JAVA_FLAG) -fullversion > /dev/null 2>&1"; \
-	echo "if [ \$$? -ne 0 ]; then "; \
-	echo "  $(WRONG_DATA_MODE_MSG)"; \
-	echo "  exit 0"; \
-	echo "fi"; \
-	echo ""; \
-	echo "GAMMA_PROG=gamma"; \
-	echo ""; \
-	echo "if [ \"$(OS_VENDOR)\" = \"Darwin\" ]; then "; \
-	echo "  # Ensure architecture for gamma and JAVA_HOME is the same."; \
-	echo "  # NOTE: gamma assumes the OpenJDK directory layout."; \
-	echo ""; \
-	echo "  GAMMA_ARCH=\"\`file \$${GAMMA_PROG} | awk '{print \$$NF}'\`\""; \
-	echo "  JVM_LIB=\"\$${JAVA_HOME}/jre/lib/libjava.$(LIBRARY_SUFFIX)\""; \
-	echo "  if [ ! -f \$${JVM_LIB} ]; then"; \
-	echo "    JVM_LIB=\"\$${JAVA_HOME}/jre/lib/$${LIBARCH}/libjava.$(LIBRARY_SUFFIX)\""; \
-	echo "  fi"; \
-	echo "  if [ ! -f \$${JVM_LIB} ] || [ -z \"\`file \$${JVM_LIB} | grep \$${GAMMA_ARCH}\`\" ]; then "; \
-	echo "    $(WRONG_DATA_MODE_MSG)"; \
-	echo "    exit 0"; \
-	echo "  fi"; \
-	echo "fi"; \
-	echo ""; \
-	echo "# Compile Queens program for test"; \
-	echo ""; \
-	echo "rm -f Queens.class"; \
-	echo "\$${JAVA_HOME}/bin/javac -d . $(GAMMADIR)/make/test/Queens.java"; \
-	echo ""; \
-	echo "# Set library path solely for gamma launcher test run"; \
-	echo ""; \
-	echo "LD_LIBRARY_PATH=.:$${LD_LIBRARY_PATH:+$$LD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/${LIBARCH}/native_threads:\$${JAVA_HOME}/jre/lib/${LIBARCH}:${GCC_LIB}"; \
-	echo "export LD_LIBRARY_PATH"; \
-	echo "unset LD_LIBRARY_PATH_32"; \
-	echo "unset LD_LIBRARY_PATH_64"; \
-	echo ""; \
-	echo "if [ \"$(OS_VENDOR)\" = \"Darwin\" ]; then "; \
-	echo "  DYLD_LIBRARY_PATH=.:$${DYLD_LIBRARY_PATH:+$$DYLD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/native_threads:\$${JAVA_HOME}/jre/lib:$${DYLD_LIBRARY_PATH:+$$DYLD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/${LIBARCH}/native_threads:\$${JAVA_HOME}/jre/lib/${LIBARCH}:${GCC_LIB}"; \
-	echo "  export DYLD_LIBRARY_PATH"; \
-	echo "fi"; \
-	echo ""; \
-	echo "# Use the gamma launcher and JAVA_HOME to run the test"; \
-	echo ""; \
-	echo "./\$${GAMMA_PROG} $(TESTFLAGS) Queens < /dev/null"; \
-	) > $@
-	$(QUIETLY) chmod +x $@
-
 FORCE:
 
 .PHONY:  all FORCE
diff --git a/make/solaris/Makefile b/make/solaris/Makefile
index 83e4df665..7ae82d856 100644
--- a/make/solaris/Makefile
+++ b/make/solaris/Makefile
@@ -231,36 +231,24 @@ $(SUBDIRS_CORE): $(BUILDTREE_MAKE)
 
 $(TARGETS_C2):  $(SUBDIRS_C2)
 	cd $(OSNAME)_$(BUILDARCH)_compiler2/$@ && $(MAKE) $(MFLAGS)
-ifeq ($(TEST_IN_BUILD),true)
-	cd $(OSNAME)_$(BUILDARCH)_compiler2/$@ && ./test_gamma
-endif
 ifdef INSTALL
 	cd $(OSNAME)_$(BUILDARCH)_compiler2/$@ && $(MAKE) $(MFLAGS) install
 endif
 
 $(TARGETS_TIERED):  $(SUBDIRS_TIERED)
 	cd $(OSNAME)_$(BUILDARCH)_tiered/$(patsubst %tiered,%,$@) && $(MAKE) $(MFLAGS)
-ifeq ($(TEST_IN_BUILD),true)
-	cd $(OSNAME)_$(BUILDARCH)_tiered/$(patsubst %tiered,%,$@) && ./test_gamma
-endif
 ifdef INSTALL
 	cd $(OSNAME)_$(BUILDARCH)_tiered/$(patsubst %tiered,%,$@) && $(MAKE) $(MFLAGS) install
 endif
 
 $(TARGETS_C1):  $(SUBDIRS_C1)
 	cd $(OSNAME)_$(BUILDARCH)_compiler1/$(patsubst %1,%,$@) && $(MAKE) $(MFLAGS)
-ifeq ($(TEST_IN_BUILD),true)
-	cd $(OSNAME)_$(BUILDARCH)_compiler1/$(patsubst %1,%,$@) && ./test_gamma
-endif
 ifdef INSTALL
 	cd $(OSNAME)_$(BUILDARCH)_compiler1/$(patsubst %1,%,$@) && $(MAKE) $(MFLAGS) install
 endif
 
 $(TARGETS_CORE):  $(SUBDIRS_CORE)
 	cd $(OSNAME)_$(BUILDARCH)_core/$(patsubst %core,%,$@) && $(MAKE) $(MFLAGS)
-ifeq ($(TEST_IN_BUILD),true)
-	cd $(OSNAME)_$(BUILDARCH)_core/$(patsubst %core,%,$@) && ./test_gamma
-endif
 ifdef INSTALL
 	cd $(OSNAME)_$(BUILDARCH)_core/$(patsubst %core,%,$@) && $(MAKE) $(MFLAGS) install
 endif
diff --git a/make/solaris/makefiles/buildtree.make b/make/solaris/makefiles/buildtree.make
index a9e5a401c..707d5f36a 100644
--- a/make/solaris/makefiles/buildtree.make
+++ b/make/solaris/makefiles/buildtree.make
@@ -50,21 +50,19 @@
 # jvmti.make	- generate JVMTI bindings from the spec (JSR-163)
 # sa.make	- generate SA jar file and natives
 # env.[ck]sh	- environment settings
-# test_gamma	- script to run the Queens program
 # 
 # The makefiles are split this way so that "make foo" will run faster by not
 # having to read the dependency files for the vm.
 
 -include $(SPEC)
 include $(GAMMADIR)/make/scm.make
+include $(GAMMADIR)/make/defs.make
 include $(GAMMADIR)/make/altsrc.make
 
+
 # 'gmake MAKE_VERBOSE=y' or 'gmake QUIETLY=' gives all the gory details.
 QUIETLY$(MAKE_VERBOSE)	= @
 
-# For now, until the compiler is less wobbly:
-TESTFLAGS	= -Xbatch -Xmx32m -showversion
-
 ### maye ARCH_XXX instead?
 ifdef USE_GCC
 PLATFORM_FILE	= $(GAMMADIR)/make/$(OS_FAMILY)/platform_$(BUILDARCH).gcc
@@ -119,7 +117,7 @@ SUBMAKE_DIRS = $(addprefix $(PLATFORM_DIR)/,$(TARGETS))
 BUILDTREE_MAKE	= $(GAMMADIR)/make/$(OS_FAMILY)/makefiles/buildtree.make
 
 BUILDTREE_TARGETS = Makefile flags.make flags_vm.make vm.make adlc.make jvmti.make sa.make \
-        env.sh env.csh jdkpath.sh .dbxrc test_gamma
+        env.sh env.csh jdkpath.sh
 
 BUILDTREE_VARS	= GAMMADIR=$(GAMMADIR) OS_FAMILY=$(OS_FAMILY) \
 	ARCH=$(ARCH) BUILDARCH=$(BUILDARCH) LIBARCH=$(LIBARCH) VARIANT=$(VARIANT)
@@ -334,7 +332,7 @@ env.sh: $(BUILDTREE_MAKE)
 	@echo Creating $@ ...
 	$(QUIETLY) ( \
 	$(BUILDTREE_COMMENT); \
-	[ -n "$$JAVA_HOME" ] && { echo ": \$${JAVA_HOME:=$${JAVA_HOME}}"; }; \
+	{ echo "JAVA_HOME=$(JDK_IMPORT_PATH)"; }; \
 	{ \
 	echo "CLASSPATH=$${CLASSPATH:+$$CLASSPATH:}.:\$${JAVA_HOME}/jre/lib/rt.jar:\$${JAVA_HOME}/jre/lib/i18n.jar"; \
 	} | sed s:$${JAVA_HOME:--------}:\$${JAVA_HOME}:g; \
@@ -346,8 +344,7 @@ env.csh: env.sh
 	@echo Creating $@ ...
 	$(QUIETLY) ( \
 	$(BUILDTREE_COMMENT); \
-	[ -n "$$JAVA_HOME" ] && \
-	{ echo "if (! \$$?JAVA_HOME) setenv JAVA_HOME \"$$JAVA_HOME\""; }; \
+	{ echo "setenv JAVA_HOME \"$(JDK_IMPORT_PATH)\""; }; \
 	sed -n 's/^\([A-Za-z_][A-Za-z0-9_]*\)=/setenv \1 /p' $?; \
 	) > $@
 
@@ -358,124 +355,6 @@ jdkpath.sh: $(BUILDTREE_MAKE)
 	echo "JDK=${JAVA_HOME}"; \
 	) > $@	   
 
-.dbxrc:  $(BUILDTREE_MAKE)
-	@echo Creating $@ ...
-	$(QUIETLY) ( \
-	echo "echo '# Loading $(PLATFORM_DIR)/$(TARGET)/.dbxrc'"; \
-	echo "if [ -f \"\$${HOTSPOT_DBXWARE}\" ]"; \
-	echo "then"; \
-	echo "	source \"\$${HOTSPOT_DBXWARE}\""; \
-	echo "elif [ -f \"\$$HOME/.dbxrc\" ]"; \
-	echo "then"; \
-	echo "	source \"\$$HOME/.dbxrc\""; \
-	echo "fi"; \
-	) > $@
-
-# Skip the test for product builds (which only work when installed in a JDK), to
-# avoid exiting with an error and causing make to halt.
-NO_TEST_MSG	= \
-	echo "$@:  skipping the test--this build must be tested in a JDK."
-
-NO_JAVA_HOME_MSG	= \
-	echo "JAVA_HOME must be set to run this test."
-
-DATA_MODE = $(DATA_MODE/$(BUILDARCH))
-JAVA_FLAG = $(JAVA_FLAG/$(DATA_MODE))
-
-DATA_MODE/i486    = 32
-DATA_MODE/sparc   = 32
-DATA_MODE/sparcv9 = 64
-DATA_MODE/amd64   = 64
-DATA_MODE/ia64    = 64
-
-# This bit is needed to enable local rebuilds.
-# Unless the makefile itself sets LP64, any environmental
-# setting of LP64 will interfere with the build.
-LP64_SETTING/32 = LP64 = \#empty
-LP64_SETTING/64 = LP64 = 1
-
-JAVA_FLAG/32 = -d32
-JAVA_FLAG/64 = -d64
-
-WRONG_DATA_MODE_MSG = \
-	echo "JAVA_HOME must point to a $(DATA_MODE)-bit OpenJDK."
-
-CROSS_COMPILING_MSG = \
-	echo "Cross compiling for ARCH $(CROSS_COMPILE_ARCH), skipping gamma run."
-
-test_gamma:  $(BUILDTREE_MAKE) $(GAMMADIR)/make/test/Queens.java
-	@echo Creating $@ ...
-	$(QUIETLY) ( \
-	echo "#!/bin/sh"; \
-	echo ""; \
-	$(BUILDTREE_COMMENT); \
-	echo ""; \
-	echo "# Include environment settings for gamma run"; \
-	echo ""; \
-	echo ". ./env.sh"; \
-	echo ""; \
-	echo "# Do not run gamma test for cross compiles"; \
-	echo ""; \
-	echo "if [ -n \"$(CROSS_COMPILE_ARCH)\" ]; then "; \
-	echo "  $(CROSS_COMPILING_MSG)"; \
-	echo "  exit 0"; \
-	echo "fi"; \
-	echo ""; \
-	echo "# Make sure JAVA_HOME is set as it is required for gamma"; \
-	echo ""; \
-	echo "if [ -z \"\$${JAVA_HOME}\" ]; then "; \
-	echo "  $(NO_JAVA_HOME_MSG)"; \
-	echo "  exit 0"; \
-	echo "fi"; \
-	echo ""; \
-	echo "# Check JAVA_HOME version to be used for the test"; \
-	echo ""; \
-	echo "\$${JAVA_HOME}/bin/java $(JAVA_FLAG) -fullversion > /dev/null 2>&1"; \
-	echo "if [ \$$? -ne 0 ]; then "; \
-	echo "  $(WRONG_DATA_MODE_MSG)"; \
-	echo "  exit 0"; \
-	echo "fi"; \
-	echo ""; \
-	echo "GAMMA_PROG=gamma"; \
-	echo ""; \
-	echo "if [ \"$(OS_VENDOR)\" = \"Darwin\" ]; then "; \
-	echo "  # Ensure architecture for gamma and JAVA_HOME is the same."; \
-	echo "  # NOTE: gamma assumes the OpenJDK directory layout."; \
-	echo ""; \
-	echo "  GAMMA_ARCH=\"\`file \$${GAMMA_PROG} | awk '{print \$$NF}'\`\""; \
-	echo "  JVM_LIB=\"\$${JAVA_HOME}/jre/lib/libjava.$(LIBRARY_SUFFIX)\""; \
-	echo "  if [ ! -f \$${JVM_LIB} ]; then"; \
-	echo "    JVM_LIB=\"\$${JAVA_HOME}/jre/lib/$${LIBARCH}/libjava.$(LIBRARY_SUFFIX)\""; \
-	echo "  fi"; \
-	echo "  if [ ! -f \$${JVM_LIB} ] || [ -z \"\`file \$${JVM_LIB} | grep \$${GAMMA_ARCH}\`\" ]; then "; \
-	echo "    $(WRONG_DATA_MODE_MSG)"; \
-	echo "    exit 0"; \
-	echo "  fi"; \
-	echo "fi"; \
-	echo ""; \
-	echo "# Compile Queens program for test"; \
-	echo ""; \
-	echo "rm -f Queens.class"; \
-	echo "\$${JAVA_HOME}/bin/javac -d . $(GAMMADIR)/make/test/Queens.java"; \
-	echo ""; \
-	echo "# Set library path solely for gamma launcher test run"; \
-	echo ""; \
-	echo "LD_LIBRARY_PATH=.:$${LD_LIBRARY_PATH:+$$LD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/${LIBARCH}/native_threads:\$${JAVA_HOME}/jre/lib/${LIBARCH}:${GCC_LIB}"; \
-	echo "export LD_LIBRARY_PATH"; \
-	echo "unset LD_LIBRARY_PATH_32"; \
-	echo "unset LD_LIBRARY_PATH_64"; \
-	echo ""; \
-	echo "if [ \"$(OS_VENDOR)\" = \"Darwin\" ]; then "; \
-	echo "  DYLD_LIBRARY_PATH=.:$${DYLD_LIBRARY_PATH:+$$DYLD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/native_threads:\$${JAVA_HOME}/jre/lib:$${DYLD_LIBRARY_PATH:+$$DYLD_LIBRARY_PATH:}\$${JAVA_HOME}/jre/lib/${LIBARCH}/native_threads:\$${JAVA_HOME}/jre/lib/${LIBARCH}:${GCC_LIB}"; \
-	echo "  export DYLD_LIBRARY_PATH"; \
-	echo "fi"; \
-	echo ""; \
-	echo "# Use the gamma launcher and JAVA_HOME to run the test"; \
-	echo ""; \
-	echo "./\$${GAMMA_PROG} $(TESTFLAGS) Queens < /dev/null"; \
-	) > $@
-	$(QUIETLY) chmod +x $@
-
 FORCE:
 
 .PHONY:  all FORCE
diff --git a/make/test/Queens.java b/make/test/Queens.java
deleted file mode 100644
index ab7a9e2c1..000000000
--- a/make/test/Queens.java
+++ /dev/null
@@ -1,86 +0,0 @@
-/*
- * Copyright (c) 2006, 2008, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- *
- */
-
-import java.util.*;
-
-// Copyright 1996, Animorphic Systems
-// gri 28 Aug 92 / 15 Jan 93 / 8 Dec 95
-
-class Queens {
-
-  static void try_i(boolean a[], boolean b[], boolean c[], int x[], int i) {
-    int adj = 7;
-
-    for (int j = 1; j <= 8; j++) {
-      if (b[j] && a[i+j] && c[adj+i-j]) {
-        x[i] = j;
-        b[j] = false;
-        a[i+j] = false;
-        c[adj+i-j] = false;
-        if (i < 8) try_i(a, b, c, x, i+1);
-        else print(x);
-        b[j] = true;
-        a[i+j] = true;
-        c[adj+i-j] = true;
-      }
-    }
-  }
-
-  public static void main(String s[]) {
-    boolean a[] = new boolean[16+1];
-    boolean b[] = new boolean[ 8+1];
-    boolean c[] = new boolean[14+1];
-    int     x[] = new int[8+1];
-    int adj = 7;
-
-    for (int i = -7; i <= 16; i++) {
-      if (i >= 1 && i <= 8) b[i]     = true;
-      if (i >= 2)           a[i]     = true;
-      if (i <= 7)           c[adj+i] = true;
-    }
-
-    x[0] = 0; // solution counter
-
-    try_i(a, b, c, x, 1);
-  }
-
-  static void print(int x[]) {
-    // first correct solution: A1 B5 C8 D6 E3 F7 G2 H4
-
-    char LF = (char)0xA;
-    char CR = (char)0xD;
-
-    x[0]++;
-    if (x[0] < 10)
-        System.out.print(" ");
-    System.out.print(x[0] + ". ");
-    for (int i = 1; i <= 8; i++) {
-      char p = (char)('A' + i - 1);
-      System.out.print(p);
-      System.out.print (x[i] + " ");
-    }
-    System.out.println();
-  }
-
-};
diff --git a/src/cpu/sparc/vm/macroAssembler_sparc.cpp b/src/cpu/sparc/vm/macroAssembler_sparc.cpp
index 251e42cd6..578650a34 100644
--- a/src/cpu/sparc/vm/macroAssembler_sparc.cpp
+++ b/src/cpu/sparc/vm/macroAssembler_sparc.cpp
@@ -1385,13 +1385,13 @@ void MacroAssembler::_verify_oop(Register reg, const char* msg, const char * fil
   }
 #endif
 
-  int len = strlen(file) + strlen(msg) + 1 + 4;
-  sprintf(buffer, "%d", line);
-  len += strlen(buffer);
-  sprintf(buffer, " at offset %d ", offset());
-  len += strlen(buffer);
-  char * real_msg = new char[len];
-  sprintf(real_msg, "%s%s(%s:%d)", msg, buffer, file, line);
+  const char* real_msg = NULL;
+  {
+    ResourceMark rm;
+    stringStream ss;
+    ss.print("%s at offset %d (%s:%d)", msg, offset(), file, line);
+    real_msg = code_string(ss.as_string());
+  }
 
   // Call indirectly to solve generation ordering problem
   AddressLiteral a(StubRoutines::verify_oop_subroutine_entry_address());
@@ -1423,13 +1423,13 @@ void MacroAssembler::_verify_oop_addr(Address addr, const char* msg, const char
   // plausibility check for oops
   if (!VerifyOops) return;
 
-  char buffer[64];
-  sprintf(buffer, "%d", line);
-  int len = strlen(file) + strlen(msg) + 1 + 4 + strlen(buffer);
-  sprintf(buffer, " at SP+%d ", addr.disp());
-  len += strlen(buffer);
-  char * real_msg = new char[len];
-  sprintf(real_msg, "%s at SP+%d (%s:%d)", msg, addr.disp(), file, line);
+  const char* real_msg = NULL;
+  {
+    ResourceMark rm;
+    stringStream ss;
+    ss.print("%s at SP+%d (%s:%d)", msg, addr.disp(), file, line);
+    real_msg = code_string(ss.as_string());
+  }
 
   // Call indirectly to solve generation ordering problem
   AddressLiteral a(StubRoutines::verify_oop_subroutine_entry_address());
@@ -1622,9 +1622,13 @@ void MacroAssembler::untested(const char* what) {
   // in order to run automated test scripts on the VM
   // Use the flag ShowMessageBoxOnError
 
-  char* b = new char[1024];
-  sprintf(b, "untested: %s", what);
-
+  const char* b = NULL;
+  {
+    ResourceMark rm;
+    stringStream ss;
+    ss.print("untested: %s", what);
+    b = code_string(ss.as_string());
+  }
   if (ShowMessageBoxOnError) { STOP(b); }
   else                       { warn(b); }
 }
diff --git a/src/cpu/x86/vm/frame_x86.inline.hpp b/src/cpu/x86/vm/frame_x86.inline.hpp
index ea8111b9f..b15b00be5 100644
--- a/src/cpu/x86/vm/frame_x86.inline.hpp
+++ b/src/cpu/x86/vm/frame_x86.inline.hpp
@@ -295,14 +295,18 @@ inline bool frame::volatile_across_calls(Register reg) {
   return true;
 }
 
+inline oop frame::saved_oop_result(RegisterMap* map) const {
+  oop* result_adr = (oop *)map->location(rax->as_VMReg());
+  guarantee(result_adr != NULL, "bad register save location");
 
-
-inline oop frame::saved_oop_result(RegisterMap* map) const       {
-  return *((oop*) map->location(rax->as_VMReg()));
+  return (*result_adr);
 }
 
 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
-  *((oop*) map->location(rax->as_VMReg())) = obj;
+  oop* result_adr = (oop *)map->location(rax->as_VMReg());
+  guarantee(result_adr != NULL, "bad register save location");
+
+  *result_adr = obj;
 }
 
 #endif // CPU_X86_VM_FRAME_X86_INLINE_HPP
diff --git a/src/cpu/x86/vm/macroAssembler_x86.cpp b/src/cpu/x86/vm/macroAssembler_x86.cpp
index bda1550ac..b64518a7b 100644
--- a/src/cpu/x86/vm/macroAssembler_x86.cpp
+++ b/src/cpu/x86/vm/macroAssembler_x86.cpp
@@ -4262,8 +4262,13 @@ void MacroAssembler::verify_oop(Register reg, const char* s) {
   if (!VerifyOops) return;
 
   // Pass register number to verify_oop_subroutine
-  char* b = new char[strlen(s) + 50];
-  sprintf(b, "verify_oop: %s: %s", reg->name(), s);
+  const char* b = NULL;
+  {
+    ResourceMark rm;
+    stringStream ss;
+    ss.print("verify_oop: %s: %s", reg->name(), s);
+    b = code_string(ss.as_string());
+  }
   BLOCK_COMMENT("verify_oop {");
 #ifdef _LP64
   push(rscratch1);                    // save r10, trashed by movptr()
@@ -4297,9 +4302,14 @@ RegisterOrConstant MacroAssembler::delayed_value_impl(intptr_t* delayed_value_ad
   { Label L;
     testptr(tmp, tmp);
     if (WizardMode) {
+      const char* buf = NULL;
+      {
+        ResourceMark rm;
+        stringStream ss;
+        ss.print("DelayedValue="INTPTR_FORMAT, delayed_value_addr[1]);
+        buf = code_string(ss.as_string());
+      }
       jcc(Assembler::notZero, L);
-      char* buf = new char[40];
-      sprintf(buf, "DelayedValue="INTPTR_FORMAT, delayed_value_addr[1]);
       STOP(buf);
     } else {
       jccb(Assembler::notZero, L);
@@ -4343,9 +4353,13 @@ void MacroAssembler::verify_oop_addr(Address addr, const char* s) {
 
   // Address adjust(addr.base(), addr.index(), addr.scale(), addr.disp() + BytesPerWord);
   // Pass register number to verify_oop_subroutine
-  char* b = new char[strlen(s) + 50];
-  sprintf(b, "verify_oop_addr: %s", s);
-
+  const char* b = NULL;
+  {
+    ResourceMark rm;
+    stringStream ss;
+    ss.print("verify_oop_addr: %s", s);
+    b = code_string(ss.as_string());
+  }
 #ifdef _LP64
   push(rscratch1);                    // save r10, trashed by movptr()
 #endif
diff --git a/src/cpu/x86/vm/relocInfo_x86.cpp b/src/cpu/x86/vm/relocInfo_x86.cpp
index d4a929613..e16c66539 100644
--- a/src/cpu/x86/vm/relocInfo_x86.cpp
+++ b/src/cpu/x86/vm/relocInfo_x86.cpp
@@ -145,12 +145,9 @@ address* Relocation::pd_address_in_code() {
   assert(which == Assembler::disp32_operand ||
          which == Assembler::call32_operand ||
          which == Assembler::imm_operand, "format unpacks ok");
-  if (which != Assembler::imm_operand) {
-    // The "address" in the code is a displacement can't return it as
-    // and address* since it is really a jint*
-    ShouldNotReachHere();
-    return NULL;
-  }
+  // The "address" in the code is a displacement can't return it as
+  // and address* since it is really a jint*
+  guarantee(which == Assembler::imm_operand, "must be immediate operand");
 #else
   assert(which == Assembler::disp32_operand || which == Assembler::imm_operand, "format unpacks ok");
 #endif // AMD64
diff --git a/src/os_cpu/linux_x86/vm/os_linux_x86.cpp b/src/os_cpu/linux_x86/vm/os_linux_x86.cpp
index 4c9d3dbed..5cdab45d4 100644
--- a/src/os_cpu/linux_x86/vm/os_linux_x86.cpp
+++ b/src/os_cpu/linux_x86/vm/os_linux_x86.cpp
@@ -340,7 +340,7 @@ JVM_handle_linux_signal(int sig,
         // here if the underlying file has been truncated.
         // Do not crash the VM in such a case.
         CodeBlob* cb = CodeCache::find_blob_unsafe(pc);
-        nmethod* nm = cb->is_nmethod() ? (nmethod*)cb : NULL;
+        nmethod* nm = (cb != NULL && cb->is_nmethod()) ? (nmethod*)cb : NULL;
         if (nm != NULL && nm->has_unsafe_access()) {
           stub = StubRoutines::handler_for_unsafe_access();
         }
diff --git a/src/share/vm/asm/assembler.cpp b/src/share/vm/asm/assembler.cpp
index 669f49039..d23c0f50f 100644
--- a/src/share/vm/asm/assembler.cpp
+++ b/src/share/vm/asm/assembler.cpp
@@ -284,15 +284,19 @@ void AbstractAssembler::update_delayed_values() {
   DelayedConstant::update_all();
 }
 
-
-
-
 void AbstractAssembler::block_comment(const char* comment) {
   if (sect() == CodeBuffer::SECT_INSTS) {
     code_section()->outer()->block_comment(offset(), comment);
   }
 }
 
+const char* AbstractAssembler::code_string(const char* str) {
+  if (sect() == CodeBuffer::SECT_INSTS || sect() == CodeBuffer::SECT_STUBS) {
+    return code_section()->outer()->code_string(str);
+  }
+  return NULL;
+}
+
 bool MacroAssembler::needs_explicit_null_check(intptr_t offset) {
   // Exception handler checks the nmethod's implicit null checks table
   // only when this method returns false.
diff --git a/src/share/vm/asm/assembler.hpp b/src/share/vm/asm/assembler.hpp
index 0a55dc90e..8a9e2758a 100644
--- a/src/share/vm/asm/assembler.hpp
+++ b/src/share/vm/asm/assembler.hpp
@@ -336,6 +336,8 @@ class AbstractAssembler : public ResourceObj  {
   // along with the disassembly when printing nmethods.  Currently
   // only supported in the instruction section of the code buffer.
   void block_comment(const char* comment);
+  // Copy str to a buffer that has the same lifetime as the CodeBuffer
+  const char* code_string(const char* str);
 
   // Label functions
   void bind(Label& L); // binds an unbound label L to the current code position
diff --git a/src/share/vm/asm/codeBuffer.cpp b/src/share/vm/asm/codeBuffer.cpp
index 2a4a8f298..f885c4153 100644
--- a/src/share/vm/asm/codeBuffer.cpp
+++ b/src/share/vm/asm/codeBuffer.cpp
@@ -703,8 +703,8 @@ void CodeBuffer::copy_code_to(CodeBlob* dest_blob) {
   this->compute_final_layout(&dest);
   relocate_code_to(&dest);
 
-  // transfer comments from buffer to blob
-  dest_blob->set_comments(_comments);
+  // transfer strings and comments from buffer to blob
+  dest_blob->set_strings(_strings);
 
   // Done moving code bytes; were they the right size?
   assert(round_to(dest.total_content_size(), oopSize) == dest_blob->content_size(), "sanity");
@@ -1003,58 +1003,78 @@ void CodeSection::decode() {
 
 
 void CodeBuffer::block_comment(intptr_t offset, const char * comment) {
-  _comments.add_comment(offset, comment);
+  _strings.add_comment(offset, comment);
 }
 
-class CodeComment: public CHeapObj<mtCode> {
+const char* CodeBuffer::code_string(const char* str) {
+  return _strings.add_string(str);
+}
+
+class CodeString: public CHeapObj<mtCode> {
  private:
-  friend class CodeComments;
+  friend class CodeStrings;
+  const char * _string;
+  CodeString*  _next;
   intptr_t     _offset;
-  const char * _comment;
-  CodeComment* _next;
 
-  ~CodeComment() {
+  ~CodeString() {
     assert(_next == NULL, "wrong interface for freeing list");
-    os::free((void*)_comment, mtCode);
+    os::free((void*)_string, mtCode);
   }
 
+  bool is_comment() const { return _offset >= 0; }
+
  public:
-  CodeComment(intptr_t offset, const char * comment) {
-    _offset = offset;
-    _comment = os::strdup(comment, mtCode);
-    _next = NULL;
+  CodeString(const char * string, intptr_t offset = -1)
+    : _next(NULL), _offset(offset) {
+    _string = os::strdup(string, mtCode);
   }
 
-  intptr_t     offset()  const { return _offset;  }
-  const char * comment() const { return _comment; }
-  CodeComment* next()          { return _next; }
+  const char * string() const { return _string; }
+  intptr_t     offset() const { assert(_offset >= 0, "offset for non comment?"); return _offset;  }
+  CodeString* next()    const { return _next; }
 
-  void set_next(CodeComment* next) { _next = next; }
+  void set_next(CodeString* next) { _next = next; }
 
-  CodeComment* find(intptr_t offset) {
-    CodeComment* a = this;
-    while (a != NULL && a->_offset != offset) {
-      a = a->_next;
+  CodeString* first_comment() {
+    if (is_comment()) {
+      return this;
+    } else {
+      return next_comment();
     }
-    return a;
   }
-
-  // Convenience for add_comment.
-  CodeComment* find_last(intptr_t offset) {
-    CodeComment* a = find(offset);
-    if (a != NULL) {
-      while ((a->_next != NULL) && (a->_next->_offset == offset)) {
-        a = a->_next;
-      }
+  CodeString* next_comment() const {
+    CodeString* s = _next;
+    while (s != NULL && !s->is_comment()) {
+      s = s->_next;
     }
-    return a;
+    return s;
   }
 };
 
+CodeString* CodeStrings::find(intptr_t offset) const {
+  CodeString* a = _strings->first_comment();
+  while (a != NULL && a->offset() != offset) {
+    a = a->next_comment();
+  }
+  return a;
+}
+
+// Convenience for add_comment.
+CodeString* CodeStrings::find_last(intptr_t offset) const {
+  CodeString* a = find(offset);
+  if (a != NULL) {
+    CodeString* c = NULL;
+    while (((c = a->next_comment()) != NULL) && (c->offset() == offset)) {
+      a = c;
+    }
+  }
+  return a;
+}
 
-void CodeComments::add_comment(intptr_t offset, const char * comment) {
-  CodeComment* c      = new CodeComment(offset, comment);
-  CodeComment* inspos = (_comments == NULL) ? NULL : _comments->find_last(offset);
+void CodeStrings::add_comment(intptr_t offset, const char * comment) {
+  CodeString* c      = new CodeString(comment, offset);
+  CodeString* inspos = (_strings == NULL) ? NULL : find_last(offset);
 
   if (inspos) {
     // insert after already existing comments with same offset
@@ -1062,43 +1082,47 @@ void CodeComments::add_comment(intptr_t offset, const char * comment) {
     inspos->set_next(c);
   } else {
     // no comments with such offset, yet. Insert before anything else.
-    c->set_next(_comments);
-    _comments = c;
+    c->set_next(_strings);
+    _strings = c;
   }
 }
 
-
-void CodeComments::assign(CodeComments& other) {
-  _comments = other._comments;
+void CodeStrings::assign(CodeStrings& other) {
+  _strings = other._strings;
 }
 
-
-void CodeComments::print_block_comment(outputStream* stream, intptr_t offset) const {
-  if (_comments != NULL) {
-    CodeComment* c = _comments->find(offset);
+void CodeStrings::print_block_comment(outputStream* stream, intptr_t offset) const {
+  if (_strings != NULL) {
+    CodeString* c = find(offset);
     while (c && c->offset() == offset) {
       stream->bol();
       stream->print("  ;; ");
-      stream->print_cr(c->comment());
-      c = c->next();
+      stream->print_cr(c->string());
+      c = c->next_comment();
     }
   }
 }
 
 
-void CodeComments::free() {
-  CodeComment* n = _comments;
+void CodeStrings::free() {
+  CodeString* n = _strings;
   while (n) {
     // unlink the node from the list saving a pointer to the next
-    CodeComment* p = n->_next;
-    n->_next = NULL;
+    CodeString* p = n->next();
+    n->set_next(NULL);
     delete n;
     n = p;
   }
-  _comments = NULL;
+  _strings = NULL;
 }
 
-
+const char* CodeStrings::add_string(const char * string) {
+  CodeString* s = new CodeString(string);
+  s->set_next(_strings);
+  _strings = s;
+  assert(s->string() != NULL, "should have a string");
+  return s->string();
+}
 
 void CodeBuffer::decode() {
   ttyLocker ttyl;
diff --git a/src/share/vm/asm/codeBuffer.hpp b/src/share/vm/asm/codeBuffer.hpp
index d13697ef4..8ce94646d 100644
--- a/src/share/vm/asm/codeBuffer.hpp
+++ b/src/share/vm/asm/codeBuffer.hpp
@@ -28,7 +28,7 @@
 #include "code/oopRecorder.hpp"
 #include "code/relocInfo.hpp"
 
-class CodeComments;
+class CodeStrings;
 class PhaseCFG;
 class Compile;
 class BufferBlob;
@@ -240,27 +240,31 @@ class CodeSection VALUE_OBJ_CLASS_SPEC {
 #endif //PRODUCT
 };
 
-class CodeComment;
-class CodeComments VALUE_OBJ_CLASS_SPEC {
+class CodeString;
+class CodeStrings VALUE_OBJ_CLASS_SPEC {
 private:
 #ifndef PRODUCT
-  CodeComment* _comments;
+  CodeString* _strings;
 #endif
 
+  CodeString* find(intptr_t offset) const;
+  CodeString* find_last(intptr_t offset) const;
+
 public:
-  CodeComments() {
+  CodeStrings() {
 #ifndef PRODUCT
-    _comments = NULL;
+    _strings = NULL;
 #endif
   }
 
+  const char* add_string(const char * string) PRODUCT_RETURN_(return NULL;);
+
   void add_comment(intptr_t offset, const char * comment) PRODUCT_RETURN;
   void print_block_comment(outputStream* stream, intptr_t offset) const PRODUCT_RETURN;
-  void assign(CodeComments& other)  PRODUCT_RETURN;
+  void assign(CodeStrings& other)  PRODUCT_RETURN;
   void free() PRODUCT_RETURN;
 };
 
-
 // A CodeBuffer describes a memory space into which assembly
 // code is generated.  This memory space usually occupies the
 // interior of a single BufferBlob, but in some cases it may be
@@ -326,7 +330,7 @@ class CodeBuffer: public StackObj {
   csize_t      _total_size;     // size in bytes of combined memory buffer
 
   OopRecorder* _oop_recorder;
-  CodeComments _comments;
+  CodeStrings  _strings;
   OopRecorder  _default_oop_recorder;  // override with initialize_oop_recorder
   Arena*       _overflow_arena;
 
@@ -527,7 +531,7 @@ class CodeBuffer: public StackObj {
   void initialize_oop_recorder(OopRecorder* r);
 
   OopRecorder* oop_recorder() const   { return _oop_recorder; }
-  CodeComments& comments()            { return _comments; }
+  CodeStrings& strings()              { return _strings; }
 
   // Code generation
   void relocate(address at, RelocationHolder const& rspec, int format = 0) {
@@ -556,6 +560,7 @@ class CodeBuffer: public StackObj {
   address transform_address(const CodeBuffer &cb, address addr) const;
 
   void block_comment(intptr_t offset, const char * comment) PRODUCT_RETURN;
+  const char* code_string(const char* str) PRODUCT_RETURN_(return NULL;);
 
   // Log a little info about section usage in the CodeBuffer
   void log_section_sizes(const char* name);
diff --git a/src/share/vm/ci/ciEnv.cpp b/src/share/vm/ci/ciEnv.cpp
index a9a3706df..6dff1e939 100644
--- a/src/share/vm/ci/ciEnv.cpp
+++ b/src/share/vm/ci/ciEnv.cpp
@@ -802,6 +802,7 @@ ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* m
   // require checks to make sure the expected type was found.  Given that this
   // only occurs for clone() the more extensive fix seems like overkill so
   // instead we simply smear the array type into Object.
+  guarantee(method_holder != NULL, "no method holder");
   if (method_holder->is_instance_klass()) {
     return method_holder->as_instance_klass();
   } else if (method_holder->is_array_klass()) {
diff --git a/src/share/vm/classfile/classLoaderData.cpp b/src/share/vm/classfile/classLoaderData.cpp
index e74a88d7d..f74f8f1ce 100644
--- a/src/share/vm/classfile/classLoaderData.cpp
+++ b/src/share/vm/classfile/classLoaderData.cpp
@@ -105,6 +105,7 @@ void ClassLoaderData::oops_do(OopClosure* f, KlassClosure* klass_closure, bool m
 void ClassLoaderData::classes_do(KlassClosure* klass_closure) {
   for (Klass* k = _klasses; k != NULL; k = k->next_link()) {
     klass_closure->do_klass(k);
+    assert(k != k->next_link(), "no loops!");
   }
 }
 
@@ -113,6 +114,7 @@ void ClassLoaderData::classes_do(void f(InstanceKlass*)) {
     if (k->oop_is_instance()) {
       f(InstanceKlass::cast(k));
     }
+    assert(k != k->next_link(), "no loops!");
   }
 }
 
@@ -258,6 +260,7 @@ void ClassLoaderData::remove_class(Klass* scratch_class) {
       return;
     }
     prev = k;
+    assert(k != k->next_link(), "no loops!");
   }
   ShouldNotReachHere();   // should have found this class!!
 }
@@ -439,6 +442,7 @@ void ClassLoaderData::dump(outputStream * const out) {
     while (k != NULL) {
       out->print_cr("klass "PTR_FORMAT", %s, CT: %d, MUT: %d", k, k->name()->as_C_string(),
           k->has_modified_oops(), k->has_accumulated_modified_oops());
+      assert(k != k->next_link(), "no loops!");
       k = k->next_link();
     }
   }
@@ -465,6 +469,7 @@ void ClassLoaderData::verify() {
   for (Klass* k = _klasses; k != NULL; k = k->next_link()) {
     guarantee(k->class_loader_data() == this, "Must be the same");
     k->verify();
+    assert(k != k->next_link(), "no loops!");
   }
 }
 
diff --git a/src/share/vm/classfile/defaultMethods.cpp b/src/share/vm/classfile/defaultMethods.cpp
index 4e43d7fd3..1977b07ea 100644
--- a/src/share/vm/classfile/defaultMethods.cpp
+++ b/src/share/vm/classfile/defaultMethods.cpp
@@ -348,7 +348,7 @@ class MethodFamily : public ResourceObj {
 
   void disqualify_method(Method* method) {
     int* index = _member_index.get(method);
-    assert(index != NULL && *index >= 0 && *index < _members.length(), "bad index");
+    guarantee(index != NULL && *index >= 0 && *index < _members.length(), "bad index");
     _members.at(*index).second = DISQUALIFIED;
   }
 
diff --git a/src/share/vm/classfile/systemDictionary.cpp b/src/share/vm/classfile/systemDictionary.cpp
index 002d781f9..edd310706 100644
--- a/src/share/vm/classfile/systemDictionary.cpp
+++ b/src/share/vm/classfile/systemDictionary.cpp
@@ -804,6 +804,32 @@ Klass* SystemDictionary::resolve_instance_class_or_null(Symbol* name, Handle cla
       }
     } // load_instance_class loop
 
+    if (HAS_PENDING_EXCEPTION) {
+      // An exception, such as OOM could have happened at various places inside
+      // load_instance_class. We might have partially initialized a shared class
+      // and need to clean it up.
+      if (class_loader.is_null()) {
+        // In some cases k may be null. Let's find the shared class again.
+        instanceKlassHandle ik(THREAD, find_shared_class(name));
+        if (ik.not_null()) {
+          if (ik->class_loader_data() == NULL) {
+            // We didn't go as far as Klass::restore_unshareable_info(),
+            // so nothing to clean up.
+          } else {
+            MutexLocker mu(SystemDictionary_lock, THREAD);
+            Klass* kk = find_class(name, ik->class_loader_data());
+            if (kk != NULL) {
+              // No clean up is needed if the shared class has been entered
+              // into system dictionary, as load_shared_class() won't be called
+              // again.
+            } else {
+              clean_up_shared_class(ik, class_loader, THREAD);
+            }
+          }
+        }
+      }
+    }
+
     if (load_instance_added == true) {
       // clean up placeholder entries for LOAD_INSTANCE success or error
       // This brackets the SystemDictionary updates for both defining
@@ -1140,11 +1166,6 @@ instanceKlassHandle SystemDictionary::load_shared_class(
   return load_shared_class(ik, class_loader, THREAD);
 }
 
-// Note well!  Changes to this method may affect oop access order
-// in the shared archive.  Please take care to not make changes that
-// adversely affect cold start time by changing the oop access order
-// that is specified in dump.cpp MarkAndMoveOrderedReadOnly and
-// MarkAndMoveOrderedReadWrite closures.
 instanceKlassHandle SystemDictionary::load_shared_class(
                  instanceKlassHandle ik, Handle class_loader, TRAPS) {
   assert(class_loader.is_null(), "non-null classloader for shared class?");
@@ -1205,6 +1226,19 @@ instanceKlassHandle SystemDictionary::load_shared_class(
   return ik;
 }
 
+void SystemDictionary::clean_up_shared_class(instanceKlassHandle ik, Handle class_loader, TRAPS) {
+  // Updating methods must be done under a lock so multiple
+  // threads don't update these in parallel
+  // Shared classes are all currently loaded by the bootstrap
+  // classloader, so this will never cause a deadlock on
+  // a custom class loader lock.
+  {
+    Handle lockObject = compute_loader_lock_object(class_loader, THREAD);
+    check_loader_lock_contention(lockObject, THREAD);
+    ObjectLocker ol(lockObject, THREAD, true);
+    ik->remove_unshareable_info();
+  }
+}
 
 instanceKlassHandle SystemDictionary::load_instance_class(Symbol* class_name, Handle class_loader, TRAPS) {
   instanceKlassHandle nh = instanceKlassHandle(); // null Handle
diff --git a/src/share/vm/classfile/systemDictionary.hpp b/src/share/vm/classfile/systemDictionary.hpp
index d415c9b1e..d282fedfb 100644
--- a/src/share/vm/classfile/systemDictionary.hpp
+++ b/src/share/vm/classfile/systemDictionary.hpp
@@ -621,6 +621,7 @@ private:
                                                Handle class_loader, TRAPS);
   static instanceKlassHandle load_shared_class(instanceKlassHandle ik,
                                                Handle class_loader, TRAPS);
+  static void clean_up_shared_class(instanceKlassHandle ik, Handle class_loader, TRAPS);
   static instanceKlassHandle load_instance_class(Symbol* class_name, Handle class_loader, TRAPS);
   static Handle compute_loader_lock_object(Handle class_loader, TRAPS);
   static void check_loader_lock_contention(Handle loader_lock, TRAPS);
diff --git a/src/share/vm/code/codeBlob.cpp b/src/share/vm/code/codeBlob.cpp
index 779235f25..6120d3535 100644
--- a/src/share/vm/code/codeBlob.cpp
+++ b/src/share/vm/code/codeBlob.cpp
@@ -186,7 +186,7 @@ void CodeBlob::flush() {
     FREE_C_HEAP_ARRAY(unsigned char, _oop_maps, mtCode);
     _oop_maps = NULL;
   }
-  _comments.free();
+  _strings.free();
 }
 
 
diff --git a/src/share/vm/code/codeBlob.hpp b/src/share/vm/code/codeBlob.hpp
index 1d47bd972..e59ae7f1f 100644
--- a/src/share/vm/code/codeBlob.hpp
+++ b/src/share/vm/code/codeBlob.hpp
@@ -66,7 +66,7 @@ class CodeBlob VALUE_OBJ_CLASS_SPEC {
   int        _data_offset;                       // offset to where data region begins
   int        _frame_size;                        // size of stack frame
   OopMapSet* _oop_maps;                          // OopMap for this CodeBlob
-  CodeComments _comments;
+  CodeStrings _strings;
 
  public:
   // Returns the space needed for CodeBlob
@@ -186,12 +186,12 @@ class CodeBlob VALUE_OBJ_CLASS_SPEC {
   // Print the comment associated with offset on stream, if there is one
   virtual void print_block_comment(outputStream* stream, address block_begin) const {
     intptr_t offset = (intptr_t)(block_begin - code_begin());
-    _comments.print_block_comment(stream, offset);
+    _strings.print_block_comment(stream, offset);
   }
 
   // Transfer ownership of comments to this CodeBlob
-  void set_comments(CodeComments& comments) {
-    _comments.assign(comments);
+  void set_strings(CodeStrings& strings) {
+    _strings.assign(strings);
   }
 };
 
diff --git a/src/share/vm/code/compiledIC.cpp b/src/share/vm/code/compiledIC.cpp
index 7677dae57..85eeda470 100644
--- a/src/share/vm/code/compiledIC.cpp
+++ b/src/share/vm/code/compiledIC.cpp
@@ -552,7 +552,7 @@ bool CompiledStaticCall::is_call_to_interpreted() const {
 
 void CompiledStaticCall::set_to_interpreted(methodHandle callee, address entry) {
   address stub=find_stub();
-  assert(stub!=NULL, "stub not found");
+  guarantee(stub != NULL, "stub not found");
 
   if (TraceICs) {
     ResourceMark rm;
diff --git a/src/share/vm/code/icBuffer.hpp b/src/share/vm/code/icBuffer.hpp
index 36d0c7616..47db2d6b2 100644
--- a/src/share/vm/code/icBuffer.hpp
+++ b/src/share/vm/code/icBuffer.hpp
@@ -50,7 +50,7 @@ class ICStub: public Stub {
   friend class ICStubInterface;
   // This will be called only by ICStubInterface
   void    initialize(int size,
-                     CodeComments comments)      { _size = size; _ic_site = NULL; }
+                     CodeStrings strings)        { _size = size; _ic_site = NULL; }
   void    finalize(); // called when a method is removed
 
   // General info
diff --git a/src/share/vm/code/stubs.cpp b/src/share/vm/code/stubs.cpp
index 245a2463a..930c637fa 100644
--- a/src/share/vm/code/stubs.cpp
+++ b/src/share/vm/code/stubs.cpp
@@ -101,8 +101,8 @@ Stub* StubQueue::stub_containing(address pc) const {
 
 Stub* StubQueue::request_committed(int code_size) {
   Stub* s = request(code_size);
-  CodeComments comments;
-  if (s != NULL) commit(code_size, comments);
+  CodeStrings strings;
+  if (s != NULL) commit(code_size, strings);
   return s;
 }
 
@@ -119,8 +119,8 @@ Stub* StubQueue::request(int requested_code_size) {
       assert(_buffer_limit == _buffer_size, "buffer must be fully usable");
       if (_queue_end + requested_size <= _buffer_size) {
         // code fits in at the end => nothing to do
-        CodeComments comments;
-        stub_initialize(s, requested_size, comments);
+        CodeStrings strings;
+        stub_initialize(s, requested_size, strings);
         return s;
       } else {
         // stub doesn't fit in at the queue end
@@ -137,8 +137,8 @@ Stub* StubQueue::request(int requested_code_size) {
     // Queue: |XXX|.......|XXXXXXX|.......|
     //        ^0  ^end    ^begin  ^limit  ^size
     s = current_stub();
-    CodeComments comments;
-    stub_initialize(s, requested_size, comments);
+    CodeStrings strings;
+    stub_initialize(s, requested_size, strings);
     return s;
   }
   // Not enough space left
@@ -147,12 +147,12 @@ Stub* StubQueue::request(int requested_code_size) {
 }
 
 
-void StubQueue::commit(int committed_code_size, CodeComments& comments) {
+void StubQueue::commit(int committed_code_size, CodeStrings& strings) {
   assert(committed_code_size > 0, "committed_code_size must be > 0");
   int committed_size = round_to(stub_code_size_to_size(committed_code_size), CodeEntryAlignment);
   Stub* s = current_stub();
   assert(committed_size <= stub_size(s), "committed size must not exceed requested size");
-  stub_initialize(s, committed_size, comments);
+  stub_initialize(s, committed_size, strings);
   _queue_end += committed_size;
   _number_of_stubs++;
   if (_mutex != NULL) _mutex->unlock();
diff --git a/src/share/vm/code/stubs.hpp b/src/share/vm/code/stubs.hpp
index 36ada2a4c..233f43e2d 100644
--- a/src/share/vm/code/stubs.hpp
+++ b/src/share/vm/code/stubs.hpp
@@ -73,7 +73,7 @@ class Stub VALUE_OBJ_CLASS_SPEC {
  public:
   // Initialization/finalization
   void    initialize(int size,
-                     CodeComments& comments)     { ShouldNotCallThis(); }                // called to initialize/specify the stub's size
+                     CodeStrings& strings)       { ShouldNotCallThis(); }                // called to initialize/specify the stub's size
   void    finalize()                             { ShouldNotCallThis(); }                // called before the stub is deallocated
 
   // General info/converters
@@ -107,7 +107,7 @@ class StubInterface: public CHeapObj<mtCode> {
  public:
   // Initialization/finalization
   virtual void    initialize(Stub* self, int size,
-                             CodeComments& comments)       = 0; // called after creation (called twice if allocated via (request, commit))
+                             CodeStrings& strings)         = 0; // called after creation (called twice if allocated via (request, commit))
   virtual void    finalize(Stub* self)                     = 0; // called before deallocation
 
   // General info/converters
@@ -136,7 +136,7 @@ class StubInterface: public CHeapObj<mtCode> {
    public:                                                 \
     /* Initialization/finalization */                      \
     virtual void    initialize(Stub* self, int size,       \
-                               CodeComments& comments)     { cast(self)->initialize(size, comments); } \
+                               CodeStrings& strings)       { cast(self)->initialize(size, strings); } \
     virtual void    finalize(Stub* self)                   { cast(self)->finalize(); }             \
                                                            \
     /* General info */                                     \
@@ -176,7 +176,7 @@ class StubQueue: public CHeapObj<mtCode> {
 
   // Stub functionality accessed via interface
   void  stub_initialize(Stub* s, int size,
-                        CodeComments& comments)  { assert(size % CodeEntryAlignment == 0, "size not aligned"); _stub_interface->initialize(s, size, comments); }
+                        CodeStrings& strings)    { assert(size % CodeEntryAlignment == 0, "size not aligned"); _stub_interface->initialize(s, size, strings); }
   void  stub_finalize(Stub* s)                   { _stub_interface->finalize(s); }
   int   stub_size(Stub* s) const                 { return _stub_interface->size(s); }
   bool  stub_contains(Stub* s, address pc) const { return _stub_interface->code_begin(s) <= pc && pc < _stub_interface->code_end(s); }
@@ -206,7 +206,7 @@ class StubQueue: public CHeapObj<mtCode> {
   Stub* request_committed(int code_size);        // request a stub that provides exactly code_size space for code
   Stub* request(int requested_code_size);        // request a stub with a (maximum) code space - locks the queue
   void  commit (int committed_code_size,
-                CodeComments& comments);         // commit the previously requested stub - unlocks the queue
+                CodeStrings& strings);           // commit the previously requested stub - unlocks the queue
 
   // Stub deallocation
   void  remove_first();                          // remove the first stub in the queue
diff --git a/src/share/vm/compiler/compileBroker.cpp b/src/share/vm/compiler/compileBroker.cpp
index 9214166e9..1b1e2d1cd 100644
--- a/src/share/vm/compiler/compileBroker.cpp
+++ b/src/share/vm/compiler/compileBroker.cpp
@@ -65,9 +65,8 @@ HS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin,
 HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end,
   char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool);
 
-#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method)              \
+#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method, comp_name)   \
   {                                                                      \
-    char* comp_name = (char*)(compiler)->name();                         \
     Symbol* klass_name = (method)->klass_name();                         \
     Symbol* name = (method)->name();                                     \
     Symbol* signature = (method)->signature();                           \
@@ -78,9 +77,9 @@ HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end,
       signature->bytes(), signature->utf8_length());                     \
   }
 
-#define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success)       \
+#define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method,                \
+                                        comp_name, success)              \
   {                                                                      \
-    char* comp_name = (char*)(compiler)->name();                         \
     Symbol* klass_name = (method)->klass_name();                         \
     Symbol* name = (method)->name();                                     \
     Symbol* signature = (method)->signature();                           \
@@ -93,22 +92,21 @@ HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end,
 
 #else /* USDT2 */
 
-#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method)              \
+#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method, comp_name)   \
   {                                                                      \
-    char* comp_name = (char*)(compiler)->name();                         \
     Symbol* klass_name = (method)->klass_name();                         \
     Symbol* name = (method)->name();                                     \
     Symbol* signature = (method)->signature();                           \
-    HOTSPOT_METHOD_COMPILE_BEGIN(                                       \
+    HOTSPOT_METHOD_COMPILE_BEGIN(                                        \
       comp_name, strlen(comp_name),                                      \
-      (char *) klass_name->bytes(), klass_name->utf8_length(),          \
+      (char *) klass_name->bytes(), klass_name->utf8_length(),           \
       (char *) name->bytes(), name->utf8_length(),                       \
       (char *) signature->bytes(), signature->utf8_length());            \
   }
 
-#define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success)       \
+#define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method,                \
+                                        comp_name, success)              \
   {                                                                      \
-    char* comp_name = (char*)(compiler)->name();                         \
     Symbol* klass_name = (method)->klass_name();                         \
     Symbol* name = (method)->name();                                     \
     Symbol* signature = (method)->signature();                           \
@@ -122,8 +120,8 @@ HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end,
 
 #else //  ndef DTRACE_ENABLED
 
-#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method)
-#define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success)
+#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method, comp_name)
+#define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, comp_name, success)
 
 #endif // ndef DTRACE_ENABLED
 
@@ -359,7 +357,7 @@ void CompileTask::print() {
 //
 void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) {
   // print compiler name
-  st->print("%s:", CompileBroker::compiler(comp_level())->name());
+  st->print("%s:", CompileBroker::compiler_name(comp_level()));
   print_compilation(st);
 }
 
@@ -368,7 +366,7 @@ void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) {
 void CompileTask::print_line() {
   ttyLocker ttyl;  // keep the following output all in one block
   // print compiler name if requested
-  if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler(comp_level())->name());
+  if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler_name(comp_level()));
   print_compilation();
 }
 
@@ -1217,8 +1215,9 @@ nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci,
 
   // lock, make sure that the compilation
   // isn't prohibited in a straightforward way.
-
-  if (compiler(comp_level) == NULL || !compiler(comp_level)->can_compile_method(method) || compilation_is_prohibited(method, osr_bci, comp_level)) {
+  AbstractCompiler *comp = CompileBroker::compiler(comp_level);
+  if (comp == NULL || !comp->can_compile_method(method) ||
+      compilation_is_prohibited(method, osr_bci, comp_level)) {
     return NULL;
   }
 
@@ -1255,7 +1254,7 @@ nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci,
 
   assert(!HAS_PENDING_EXCEPTION, "No exception should be present");
   // some prerequisites that are compiler specific
-  if (compiler(comp_level)->is_c2() || compiler(comp_level)->is_shark()) {
+  if (comp->is_c2() || comp->is_shark()) {
     method->constants()->resolve_string_constants(CHECK_AND_CLEAR_NULL);
     // Resolve all classes seen in the signature of the method
     // we are compiling.
@@ -1372,8 +1371,9 @@ bool CompileBroker::compilation_is_in_queue(methodHandle method,
 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) {
   bool is_native = method->is_native();
   // Some compilers may not support the compilation of natives.
+  AbstractCompiler *comp = compiler(comp_level);
   if (is_native &&
-      (!CICompileNatives || !compiler(comp_level)->supports_native())) {
+      (!CICompileNatives || comp == NULL || !comp->supports_native())) {
     method->set_not_compilable_quietly(comp_level);
     return true;
   }
@@ -1381,7 +1381,7 @@ bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci,
   bool is_osr = (osr_bci != standard_entry_bci);
   // Some compilers may not support on stack replacement.
   if (is_osr &&
-      (!CICompileOSR || !compiler(comp_level)->supports_osr())) {
+      (!CICompileOSR || comp == NULL || !comp->supports_osr())) {
     method->set_not_osr_compilable(comp_level);
     return true;
   }
@@ -1753,6 +1753,7 @@ void CompileBroker::invoke_compiler_on_method(CompileTask* task) {
   bool is_osr = (osr_bci != standard_entry_bci);
   bool should_log = (thread->log() != NULL);
   bool should_break = false;
+  int task_level = task->comp_level();
   {
     // create the handle inside it's own block so it can't
     // accidentally be referenced once the thread transitions to
@@ -1766,9 +1767,10 @@ void CompileBroker::invoke_compiler_on_method(CompileTask* task) {
     assert(!method->is_native(), "no longer compile natives");
 
     // Save information about this method in case of failure.
-    set_last_compile(thread, method, is_osr, task->comp_level());
+    set_last_compile(thread, method, is_osr, task_level);
 
-    DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler(task->comp_level()), method);
+    DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler(task_level), method,
+                                      compiler_name(task_level));
   }
 
   // Allocate a new set of JNI handles.
@@ -1805,7 +1807,12 @@ void CompileBroker::invoke_compiler_on_method(CompileTask* task) {
 
     TraceTime t1("compilation", &time);
 
-    compiler(task->comp_level())->compile_method(&ci_env, target, osr_bci);
+    AbstractCompiler *comp = compiler(task_level);
+    if (comp == NULL) {
+      ci_env.record_method_not_compilable("no compiler", !TieredCompilation);
+    } else {
+      comp->compile_method(&ci_env, target, osr_bci);
+    }
 
     if (!ci_env.failing() && task->code() == NULL) {
       //assert(false, "compiler should always document failure");
@@ -1843,7 +1850,8 @@ void CompileBroker::invoke_compiler_on_method(CompileTask* task) {
 
   methodHandle method(thread, task->method());
 
-  DTRACE_METHOD_COMPILE_END_PROBE(compiler(task->comp_level()), method, task->is_success());
+  DTRACE_METHOD_COMPILE_END_PROBE(compiler(task_level), method,
+                                  compiler_name(task_level), task->is_success());
 
   collect_statistics(thread, time, task);
 
@@ -1868,9 +1876,9 @@ void CompileBroker::invoke_compiler_on_method(CompileTask* task) {
     break;
   case ciEnv::MethodCompilable_not_at_tier:
     if (is_osr)
-      method->set_not_osr_compilable_quietly(task->comp_level());
+      method->set_not_osr_compilable_quietly(task_level);
     else
-      method->set_not_compilable_quietly(task->comp_level());
+      method->set_not_compilable_quietly(task_level);
     break;
   }
 
@@ -2128,7 +2136,14 @@ void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time
   if (UsePerfData) counters->set_current_method("");
 }
 
-
+const char* CompileBroker::compiler_name(int comp_level) {
+  AbstractCompiler *comp = CompileBroker::compiler(comp_level);
+  if (comp == NULL) {
+    return "no compiler";
+  } else {
+    return (comp->name());
+  }
+}
 
 void CompileBroker::print_times() {
   tty->cr();
@@ -2142,11 +2157,13 @@ void CompileBroker::print_times() {
                 CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count);
   tty->print_cr("    On stack replacement   : %6.3f s, Average : %2.3f", CompileBroker::_t_osr_compilation.seconds(), CompileBroker::_t_osr_compilation.seconds() / CompileBroker::_total_osr_compile_count);
 
-  if (compiler(CompLevel_simple) != NULL) {
-    compiler(CompLevel_simple)->print_timers();
+  AbstractCompiler *comp = compiler(CompLevel_simple);
+  if (comp != NULL) {
+    comp->print_timers();
   }
-  if (compiler(CompLevel_full_optimization) != NULL) {
-    compiler(CompLevel_full_optimization)->print_timers();
+  comp = compiler(CompLevel_full_optimization);
+  if (comp != NULL) {
+    comp->print_timers();
   }
   tty->cr();
   int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled;
diff --git a/src/share/vm/compiler/compileBroker.hpp b/src/share/vm/compiler/compileBroker.hpp
index 7ba448b80..27fe52851 100644
--- a/src/share/vm/compiler/compileBroker.hpp
+++ b/src/share/vm/compiler/compileBroker.hpp
@@ -418,6 +418,9 @@ class CompileBroker: AllStatic {
   static void print_last_compile();
 
   static void print_compiler_threads_on(outputStream* st);
+
+  // compiler name for debugging
+  static const char* compiler_name(int comp_level);
 };
 
 #endif // SHARE_VM_COMPILER_COMPILEBROKER_HPP
diff --git a/src/share/vm/compiler/disassembler.cpp b/src/share/vm/compiler/disassembler.cpp
index 3efe07914..070e0321e 100644
--- a/src/share/vm/compiler/disassembler.cpp
+++ b/src/share/vm/compiler/disassembler.cpp
@@ -158,7 +158,7 @@ class decode_env {
  private:
   nmethod*      _nm;
   CodeBlob*     _code;
-  CodeComments  _comments;
+  CodeStrings   _strings;
   outputStream* _output;
   address       _start, _end;
 
@@ -198,7 +198,7 @@ class decode_env {
   void print_address(address value);
 
  public:
-  decode_env(CodeBlob* code, outputStream* output, CodeComments c = CodeComments());
+  decode_env(CodeBlob* code, outputStream* output, CodeStrings c = CodeStrings());
 
   address decode_instructions(address start, address end);
 
@@ -242,13 +242,13 @@ class decode_env {
   const char* options() { return _option_buf; }
 };
 
-decode_env::decode_env(CodeBlob* code, outputStream* output, CodeComments c) {
+decode_env::decode_env(CodeBlob* code, outputStream* output, CodeStrings c) {
   memset(this, 0, sizeof(*this));
   _output = output ? output : tty;
   _code = code;
   if (code != NULL && code->is_nmethod())
     _nm = (nmethod*) code;
-  _comments.assign(c);
+  _strings.assign(c);
 
   // by default, output pc but not bytes:
   _print_pc       = true;
@@ -370,7 +370,7 @@ void decode_env::print_insn_labels() {
   if (cb != NULL) {
     cb->print_block_comment(st, p);
   }
-  _comments.print_block_comment(st, (intptr_t)(p - _start));
+  _strings.print_block_comment(st, (intptr_t)(p - _start));
   if (_print_pc) {
     st->print("  " PTR_FORMAT ": ", p);
   }
@@ -498,7 +498,7 @@ void Disassembler::decode(CodeBlob* cb, outputStream* st) {
   env.decode_instructions(cb->code_begin(), cb->code_end());
 }
 
-void Disassembler::decode(address start, address end, outputStream* st, CodeComments c) {
+void Disassembler::decode(address start, address end, outputStream* st, CodeStrings c) {
   if (!load_library())  return;
   decode_env env(CodeCache::find_blob_unsafe(start), st, c);
   env.decode_instructions(start, end);
diff --git a/src/share/vm/compiler/disassembler.hpp b/src/share/vm/compiler/disassembler.hpp
index fd1f52eee..c81666ec2 100644
--- a/src/share/vm/compiler/disassembler.hpp
+++ b/src/share/vm/compiler/disassembler.hpp
@@ -100,7 +100,7 @@ class Disassembler {
   }
   static void decode(CodeBlob *cb,               outputStream* st = NULL);
   static void decode(nmethod* nm,                outputStream* st = NULL);
-  static void decode(address begin, address end, outputStream* st = NULL, CodeComments c = CodeComments());
+  static void decode(address begin, address end, outputStream* st = NULL, CodeStrings c = CodeStrings());
 };
 
 #endif // SHARE_VM_COMPILER_DISASSEMBLER_HPP
diff --git a/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp b/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp
index 1d056338c..df6aabbb5 100644
--- a/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp
+++ b/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp
@@ -6068,6 +6068,10 @@ void CMSCollector::sweep(bool asynch) {
   verify_work_stacks_empty();
   verify_overflow_empty();
 
+  if (should_unload_classes()) {
+    ClassLoaderDataGraph::purge();
+  }
+
   _intra_sweep_timer.stop();
   _intra_sweep_estimate.sample(_intra_sweep_timer.seconds());
 
diff --git a/src/share/vm/gc_implementation/g1/concurrentMark.cpp b/src/share/vm/gc_implementation/g1/concurrentMark.cpp
index 2a462481f..d9d70620e 100644
--- a/src/share/vm/gc_implementation/g1/concurrentMark.cpp
+++ b/src/share/vm/gc_implementation/g1/concurrentMark.cpp
@@ -784,7 +784,7 @@ void ConcurrentMark::reset_marking_state(bool clear_overflow) {
   }
 }
 
-void ConcurrentMark::set_phase(uint active_tasks, bool concurrent) {
+void ConcurrentMark::set_concurrency(uint active_tasks) {
   assert(active_tasks <= _max_worker_id, "we should not have more");
 
   _active_tasks = active_tasks;
@@ -793,6 +793,10 @@ void ConcurrentMark::set_phase(uint active_tasks, bool concurrent) {
   _terminator   = ParallelTaskTerminator((int) active_tasks, _task_queues);
   _first_overflow_barrier_sync.set_n_workers((int) active_tasks);
   _second_overflow_barrier_sync.set_n_workers((int) active_tasks);
+}
+
+void ConcurrentMark::set_concurrency_and_phase(uint active_tasks, bool concurrent) {
+  set_concurrency(active_tasks);
 
   _concurrent = concurrent;
   // We propagate this to all tasks, not just the active ones.
@@ -806,7 +810,9 @@ void ConcurrentMark::set_phase(uint active_tasks, bool concurrent) {
     // false before we start remark. At this point we should also be
     // in a STW phase.
     assert(!concurrent_marking_in_progress(), "invariant");
-    assert(_finger == _heap_end, "only way to get here");
+    assert(_finger == _heap_end,
+           err_msg("only way to get here: _finger: "PTR_FORMAT", _heap_end: "PTR_FORMAT,
+                   _finger, _heap_end));
     update_g1_committed(true);
   }
 }
@@ -974,20 +980,28 @@ void ConcurrentMark::enter_first_sync_barrier(uint worker_id) {
     gclog_or_tty->print_cr("[%u] leaving first barrier", worker_id);
   }
 
-  // let the task associated with with worker 0 do this
-  if (worker_id == 0) {
-    // task 0 is responsible for clearing the global data structures
-    // We should be here because of an overflow. During STW we should
-    // not clear the overflow flag since we rely on it being true when
-    // we exit this method to abort the pause and restart concurent
-    // marking.
-    reset_marking_state(concurrent() /* clear_overflow */);
-    force_overflow()->update();
-
-    if (G1Log::fine()) {
-      gclog_or_tty->date_stamp(PrintGCDateStamps);
-      gclog_or_tty->stamp(PrintGCTimeStamps);
-      gclog_or_tty->print_cr("[GC concurrent-mark-reset-for-overflow]");
+  // If we're executing the concurrent phase of marking, reset the marking
+  // state; otherwise the marking state is reset after reference processing,
+  // during the remark pause.
+  // If we reset here as a result of an overflow during the remark we will
+  // see assertion failures from any subsequent set_concurrency_and_phase()
+  // calls.
+  if (concurrent()) {
+    // let the task associated with with worker 0 do this
+    if (worker_id == 0) {
+      // task 0 is responsible for clearing the global data structures
+      // We should be here because of an overflow. During STW we should
+      // not clear the overflow flag since we rely on it being true when
+      // we exit this method to abort the pause and restart concurent
+      // marking.
+      reset_marking_state(true /* clear_overflow */);
+      force_overflow()->update();
+
+      if (G1Log::fine()) {
+        gclog_or_tty->date_stamp(PrintGCDateStamps);
+        gclog_or_tty->stamp(PrintGCTimeStamps);
+        gclog_or_tty->print_cr("[GC concurrent-mark-reset-for-overflow]");
+      }
     }
   }
 
@@ -1007,7 +1021,7 @@ void ConcurrentMark::enter_second_sync_barrier(uint worker_id) {
   if (concurrent()) {
     ConcurrentGCThread::stsJoin();
   }
-  // at this point everything should be re-initialised and ready to go
+  // at this point everything should be re-initialized and ready to go
 
   if (verbose_low()) {
     gclog_or_tty->print_cr("[%u] leaving second barrier", worker_id);
@@ -1065,8 +1079,8 @@ public:
         double mark_step_duration_ms = G1ConcMarkStepDurationMillis;
 
         the_task->do_marking_step(mark_step_duration_ms,
-                                  true /* do_stealing    */,
-                                  true /* do_termination */);
+                                  true  /* do_termination */,
+                                  false /* is_serial*/);
 
         double end_time_sec = os::elapsedTime();
         double end_vtime_sec = os::elapsedVTime();
@@ -1222,8 +1236,8 @@ void ConcurrentMark::markFromRoots() {
 
   uint active_workers = MAX2(1U, parallel_marking_threads());
 
-  // Parallel task terminator is set in "set_phase()"
-  set_phase(active_workers, true /* concurrent */);
+  // Parallel task terminator is set in "set_concurrency_and_phase()"
+  set_concurrency_and_phase(active_workers, true /* concurrent */);
 
   CMConcurrentMarkingTask markingTask(this, cmThread());
   if (use_parallel_marking_threads()) {
@@ -1275,12 +1289,22 @@ void ConcurrentMark::checkpointRootsFinal(bool clear_all_soft_refs) {
   if (has_overflown()) {
     // Oops.  We overflowed.  Restart concurrent marking.
     _restart_for_overflow = true;
-    // Clear the marking state because we will be restarting
-    // marking due to overflowing the global mark stack.
-    reset_marking_state();
     if (G1TraceMarkStackOverflow) {
       gclog_or_tty->print_cr("\nRemark led to restart for overflow.");
     }
+
+    // Verify the heap w.r.t. the previous marking bitmap.
+    if (VerifyDuringGC) {
+      HandleMark hm;  // handle scope
+      gclog_or_tty->print(" VerifyDuringGC:(overflow)");
+      Universe::heap()->prepare_for_verify();
+      Universe::verify(/* silent */ false,
+                       /* option */ VerifyOption_G1UsePrevMarking);
+    }
+
+    // Clear the marking state because we will be restarting
+    // marking due to overflowing the global mark stack.
+    reset_marking_state();
   } else {
     // Aggregate the per-task counting data that we have accumulated
     // while marking.
@@ -2184,14 +2208,17 @@ bool G1CMIsAliveClosure::do_object_b(oop obj) {
 // operating on the global stack.
 
 class G1CMKeepAliveAndDrainClosure: public OopClosure {
-  ConcurrentMark*  _cm;
-  CMTask*          _task;
-  int              _ref_counter_limit;
-  int              _ref_counter;
+  ConcurrentMark* _cm;
+  CMTask*         _task;
+  int             _ref_counter_limit;
+  int             _ref_counter;
+  bool            _is_serial;
  public:
-  G1CMKeepAliveAndDrainClosure(ConcurrentMark* cm, CMTask* task) :
-    _cm(cm), _task(task), _ref_counter_limit(G1RefProcDrainInterval) {
+  G1CMKeepAliveAndDrainClosure(ConcurrentMark* cm, CMTask* task, bool is_serial) :
+    _cm(cm), _task(task), _is_serial(is_serial),
+    _ref_counter_limit(G1RefProcDrainInterval) {
     assert(_ref_counter_limit > 0, "sanity");
+    assert(!_is_serial || _task->worker_id() == 0, "only task 0 for serial code");
     _ref_counter = _ref_counter_limit;
   }
 
@@ -2230,8 +2257,8 @@ class G1CMKeepAliveAndDrainClosure: public OopClosure {
         do {
           double mark_step_duration_ms = G1ConcMarkStepDurationMillis;
           _task->do_marking_step(mark_step_duration_ms,
-                                 false /* do_stealing    */,
-                                 false /* do_termination */);
+                                 false      /* do_termination */,
+                                 _is_serial);
         } while (_task->has_aborted() && !_cm->has_overflown());
         _ref_counter = _ref_counter_limit;
       }
@@ -2253,27 +2280,18 @@ class G1CMKeepAliveAndDrainClosure: public OopClosure {
 class G1CMDrainMarkingStackClosure: public VoidClosure {
   ConcurrentMark* _cm;
   CMTask*         _task;
-  bool            _do_stealing;
-  bool            _do_termination;
+  bool            _is_serial;
  public:
-  G1CMDrainMarkingStackClosure(ConcurrentMark* cm, CMTask* task, bool is_par) :
-    _cm(cm), _task(task) {
-    assert(is_par || _task->worker_id() == 0,
-           "Only task for worker 0 should be used if ref processing is single threaded");
-    // We only allow stealing and only enter the termination protocol
-    // in CMTask::do_marking_step() if this closure is being instantiated
-    // for parallel reference processing.
-    _do_stealing = _do_termination = is_par;
+  G1CMDrainMarkingStackClosure(ConcurrentMark* cm, CMTask* task, bool is_serial) :
+    _cm(cm), _task(task), _is_serial(is_serial) {
+    assert(!_is_serial || _task->worker_id() == 0, "only task 0 for serial code");
   }
 
   void do_void() {
     do {
       if (_cm->verbose_high()) {
-        gclog_or_tty->print_cr("\t[%u] Drain: Calling do_marking_step - "
-                               "stealing: %s, termination: %s",
-                               _task->worker_id(),
-                               BOOL_TO_STR(_do_stealing),
-                               BOOL_TO_STR(_do_termination));
+        gclog_or_tty->print_cr("\t[%u] Drain: Calling do_marking_step - serial: %s",
+                               _task->worker_id(), BOOL_TO_STR(_is_serial));
       }
 
       // We call CMTask::do_marking_step() to completely drain the local
@@ -2294,8 +2312,8 @@ class G1CMDrainMarkingStackClosure: public VoidClosure {
       // has_aborted() flag that the marking step has completed.
 
       _task->do_marking_step(1000000000.0 /* something very large */,
-                             _do_stealing,
-                             _do_termination);
+                             true         /* do_termination */,
+                             _is_serial);
     } while (_task->has_aborted() && !_cm->has_overflown());
   }
 };
@@ -2328,7 +2346,6 @@ class G1CMRefProcTaskProxy: public AbstractGangTask {
   ProcessTask&     _proc_task;
   G1CollectedHeap* _g1h;
   ConcurrentMark*  _cm;
-  bool             _processing_is_mt;
 
 public:
   G1CMRefProcTaskProxy(ProcessTask& proc_task,
@@ -2336,15 +2353,15 @@ public:
                      ConcurrentMark* cm) :
     AbstractGangTask("Process reference objects in parallel"),
     _proc_task(proc_task), _g1h(g1h), _cm(cm) {
-      ReferenceProcessor* rp = _g1h->ref_processor_cm();
-      _processing_is_mt = rp->processing_is_mt();
-    }
+    ReferenceProcessor* rp = _g1h->ref_processor_cm();
+    assert(rp->processing_is_mt(), "shouldn't be here otherwise");
+  }
 
   virtual void work(uint worker_id) {
-    CMTask* marking_task = _cm->task(worker_id);
+    CMTask* task = _cm->task(worker_id);
     G1CMIsAliveClosure g1_is_alive(_g1h);
-    G1CMKeepAliveAndDrainClosure g1_par_keep_alive(_cm, marking_task);
-    G1CMDrainMarkingStackClosure g1_par_drain(_cm, marking_task, _processing_is_mt);
+    G1CMKeepAliveAndDrainClosure g1_par_keep_alive(_cm, task, false /* is_serial */);
+    G1CMDrainMarkingStackClosure g1_par_drain(_cm, task, false /* is_serial */);
 
     _proc_task.work(worker_id, g1_is_alive, g1_par_keep_alive, g1_par_drain);
   }
@@ -2356,9 +2373,11 @@ void G1CMRefProcTaskExecutor::execute(ProcessTask& proc_task) {
 
   G1CMRefProcTaskProxy proc_task_proxy(proc_task, _g1h, _cm);
 
-  // We need to reset the phase for each task execution so that
-  // the termination protocol of CMTask::do_marking_step works.
-  _cm->set_phase(_active_workers, false /* concurrent */);
+  // We need to reset the concurrency level before each
+  // proxy task execution, so that the termination protocol
+  // and overflow handling in CMTask::do_marking_step() knows
+  // how many workers to wait for.
+  _cm->set_concurrency(_active_workers);
   _g1h->set_par_threads(_active_workers);
   _workers->run_task(&proc_task_proxy);
   _g1h->set_par_threads(0);
@@ -2384,12 +2403,29 @@ void G1CMRefProcTaskExecutor::execute(EnqueueTask& enq_task) {
 
   G1CMRefEnqueueTaskProxy enq_task_proxy(enq_task);
 
+  // Not strictly necessary but...
+  //
+  // We need to reset the concurrency level before each
+  // proxy task execution, so that the termination protocol
+  // and overflow handling in CMTask::do_marking_step() knows
+  // how many workers to wait for.
+  _cm->set_concurrency(_active_workers);
   _g1h->set_par_threads(_active_workers);
   _workers->run_task(&enq_task_proxy);
   _g1h->set_par_threads(0);
 }
 
 void ConcurrentMark::weakRefsWork(bool clear_all_soft_refs) {
+  if (has_overflown()) {
+    // Skip processing the discovered references if we have
+    // overflown the global marking stack. Reference objects
+    // only get discovered once so it is OK to not
+    // de-populate the discovered reference lists. We could have,
+    // but the only benefit would be that, when marking restarts,
+    // less reference objects are discovered.
+    return;
+  }
+
   ResourceMark rm;
   HandleMark   hm;
 
@@ -2415,26 +2451,39 @@ void ConcurrentMark::weakRefsWork(bool clear_all_soft_refs) {
     rp->setup_policy(clear_all_soft_refs);
     assert(_markStack.isEmpty(), "mark stack should be empty");
 
-    // Non-MT instances 'Keep Alive' and 'Complete GC' oop closures.
-    G1CMKeepAliveAndDrainClosure g1_keep_alive(this, task(0));
-    G1CMDrainMarkingStackClosure g1_drain_mark_stack(this, task(0), false);
-
-    // We need at least one active thread. If reference processing is
-    // not multi-threaded we use the current (ConcurrentMarkThread) thread,
-    // otherwise we use the work gang from the G1CollectedHeap and we
-    // utilize all the worker threads we can.
-    uint active_workers = (rp->processing_is_mt() && g1h->workers() != NULL
-                                ? g1h->workers()->active_workers()
-                                : 1U);
-
+    // Instances of the 'Keep Alive' and 'Complete GC' closures used
+    // in serial reference processing. Note these closures are also
+    // used for serially processing (by the the current thread) the
+    // JNI references during parallel reference processing.
+    //
+    // These closures do not need to synchronize with the worker
+    // threads involved in parallel reference processing as these
+    // instances are executed serially by the current thread (e.g.
+    // reference processing is not multi-threaded and is thus
+    // performed by the current thread instead of a gang worker).
+    //
+    // The gang tasks involved in parallel reference procssing create
+    // their own instances of these closures, which do their own
+    // synchronization among themselves.
+    G1CMKeepAliveAndDrainClosure g1_keep_alive(this, task(0), true /* is_serial */);
+    G1CMDrainMarkingStackClosure g1_drain_mark_stack(this, task(0), true /* is_serial */);
+
+    // We need at least one active thread. If reference processing
+    // is not multi-threaded we use the current (VMThread) thread,
+    // otherwise we use the work gang from the G1CollectedHeap and
+    // we utilize all the worker threads we can.
+    bool processing_is_mt = rp->processing_is_mt() && g1h->workers() != NULL;
+    uint active_workers = (processing_is_mt ? g1h->workers()->active_workers() : 1U);
     active_workers = MAX2(MIN2(active_workers, _max_worker_id), 1U);
 
+    // Parallel processing task executor.
     G1CMRefProcTaskExecutor par_task_executor(g1h, this,
                                               g1h->workers(), active_workers);
+    AbstractRefProcTaskExecutor* executor = (processing_is_mt ? &par_task_executor : NULL);
 
-    AbstractRefProcTaskExecutor* executor = (rp->processing_is_mt()
-                                                ? &par_task_executor
-                                                : NULL);
+    // Set the concurrency level. The phase was already set prior to
+    // executing the remark task.
+    set_concurrency(active_workers);
 
     // Set the degree of MT processing here.  If the discovery was done MT,
     // the number of threads involved during discovery could differ from
@@ -2454,6 +2503,7 @@ void ConcurrentMark::weakRefsWork(bool clear_all_soft_refs) {
 
     assert(_markStack.overflow() || _markStack.isEmpty(),
             "mark stack should be empty (unless it overflowed)");
+
     if (_markStack.overflow()) {
       // This should have been done already when we tried to push an
       // entry on to the global mark stack. But let's do it again.
@@ -2482,8 +2532,8 @@ void ConcurrentMark::swapMarkBitMaps() {
 
 class CMRemarkTask: public AbstractGangTask {
 private:
-  ConcurrentMark *_cm;
-
+  ConcurrentMark* _cm;
+  bool            _is_serial;
 public:
   void work(uint worker_id) {
     // Since all available tasks are actually started, we should
@@ -2493,8 +2543,8 @@ public:
       task->record_start_time();
       do {
         task->do_marking_step(1000000000.0 /* something very large */,
-                              true /* do_stealing    */,
-                              true /* do_termination */);
+                              true         /* do_termination       */,
+                              _is_serial);
       } while (task->has_aborted() && !_cm->has_overflown());
       // If we overflow, then we do not want to restart. We instead
       // want to abort remark and do concurrent marking again.
@@ -2502,8 +2552,8 @@ public:
     }
   }
 
-  CMRemarkTask(ConcurrentMark* cm, int active_workers) :
-    AbstractGangTask("Par Remark"), _cm(cm) {
+  CMRemarkTask(ConcurrentMark* cm, int active_workers, bool is_serial) :
+    AbstractGangTask("Par Remark"), _cm(cm), _is_serial(is_serial) {
     _cm->terminator()->reset_for_reuse(active_workers);
   }
 };
@@ -2524,30 +2574,40 @@ void ConcurrentMark::checkpointRootsFinalWork() {
       active_workers = (uint) ParallelGCThreads;
       g1h->workers()->set_active_workers(active_workers);
     }
-    set_phase(active_workers, false /* concurrent */);
+    set_concurrency_and_phase(active_workers, false /* concurrent */);
     // Leave _parallel_marking_threads at it's
     // value originally calculated in the ConcurrentMark
     // constructor and pass values of the active workers
     // through the gang in the task.
 
-    CMRemarkTask remarkTask(this, active_workers);
+    CMRemarkTask remarkTask(this, active_workers, false /* is_serial */);
+    // We will start all available threads, even if we decide that the
+    // active_workers will be fewer. The extra ones will just bail out
+    // immediately.
     g1h->set_par_threads(active_workers);
     g1h->workers()->run_task(&remarkTask);
     g1h->set_par_threads(0);
   } else {
     G1CollectedHeap::StrongRootsScope srs(g1h);
-    // this is remark, so we'll use up all available threads
     uint active_workers = 1;
-    set_phase(active_workers, false /* concurrent */);
-
-    CMRemarkTask remarkTask(this, active_workers);
-    // We will start all available threads, even if we decide that the
-    // active_workers will be fewer. The extra ones will just bail out
-    // immediately.
+    set_concurrency_and_phase(active_workers, false /* concurrent */);
+
+    // Note - if there's no work gang then the VMThread will be
+    // the thread to execute the remark - serially. We have
+    // to pass true for the is_serial parameter so that
+    // CMTask::do_marking_step() doesn't enter the sync
+    // barriers in the event of an overflow. Doing so will
+    // cause an assert that the current thread is not a
+    // concurrent GC thread.
+    CMRemarkTask remarkTask(this, active_workers, true /* is_serial*/);
     remarkTask.work(0);
   }
   SATBMarkQueueSet& satb_mq_set = JavaThread::satb_mark_queue_set();
-  guarantee(satb_mq_set.completed_buffers_num() == 0, "invariant");
+  guarantee(has_overflown() ||
+            satb_mq_set.completed_buffers_num() == 0,
+            err_msg("Invariant: has_overflown = %s, num buffers = %d",
+                    BOOL_TO_STR(has_overflown()),
+                    satb_mq_set.completed_buffers_num()));
 
   print_stats();
 }
@@ -3854,8 +3914,8 @@ void CMTask::print_stats() {
 
 /*****************************************************************************
 
-    The do_marking_step(time_target_ms) method is the building block
-    of the parallel marking framework. It can be called in parallel
+    The do_marking_step(time_target_ms, ...) method is the building
+    block of the parallel marking framework. It can be called in parallel
     with other invocations of do_marking_step() on different tasks
     (but only one per task, obviously) and concurrently with the
     mutator threads, or during remark, hence it eliminates the need
@@ -3865,7 +3925,7 @@ void CMTask::print_stats() {
     pauses too, since do_marking_step() ensures that it aborts before
     it needs to yield.
 
-    The data structures that is uses to do marking work are the
+    The data structures that it uses to do marking work are the
     following:
 
       (1) Marking Bitmap. If there are gray objects that appear only
@@ -3914,7 +3974,7 @@ void CMTask::print_stats() {
       (2) When a global overflow (on the global stack) has been
       triggered. Before the task aborts, it will actually sync up with
       the other tasks to ensure that all the marking data structures
-      (local queues, stacks, fingers etc.)  are re-initialised so that
+      (local queues, stacks, fingers etc.)  are re-initialized so that
       when do_marking_step() completes, the marking phase can
       immediately restart.
 
@@ -3951,11 +4011,25 @@ void CMTask::print_stats() {
     place, it was natural to piggy-back all the other conditions on it
     too and not constantly check them throughout the code.
 
+    If do_termination is true then do_marking_step will enter its
+    termination protocol.
+
+    The value of is_serial must be true when do_marking_step is being
+    called serially (i.e. by the VMThread) and do_marking_step should
+    skip any synchronization in the termination and overflow code.
+    Examples include the serial remark code and the serial reference
+    processing closures.
+
+    The value of is_serial must be false when do_marking_step is
+    being called by any of the worker threads in a work gang.
+    Examples include the concurrent marking code (CMMarkingTask),
+    the MT remark code, and the MT reference processing closures.
+
  *****************************************************************************/
 
 void CMTask::do_marking_step(double time_target_ms,
-                             bool do_stealing,
-                             bool do_termination) {
+                             bool do_termination,
+                             bool is_serial) {
   assert(time_target_ms >= 1.0, "minimum granularity is 1ms");
   assert(concurrent() == _cm->concurrent(), "they should be the same");
 
@@ -3976,6 +4050,12 @@ void CMTask::do_marking_step(double time_target_ms,
   _start_time_ms = os::elapsedVTime() * 1000.0;
   statsOnly( _interval_start_time_ms = _start_time_ms );
 
+  // If do_stealing is true then do_marking_step will attempt to
+  // steal work from the other CMTasks. It only makes sense to
+  // enable stealing when the termination protocol is enabled
+  // and do_marking_step() is not being called serially.
+  bool do_stealing = do_termination && !is_serial;
+
   double diff_prediction_ms =
     g1_policy->get_new_prediction(&_marking_step_diffs_ms);
   _time_target_ms = time_target_ms - diff_prediction_ms;
@@ -4237,10 +4317,12 @@ void CMTask::do_marking_step(double time_target_ms,
     }
 
     _termination_start_time_ms = os::elapsedVTime() * 1000.0;
+
     // The CMTask class also extends the TerminatorTerminator class,
     // hence its should_exit_termination() method will also decide
     // whether to exit the termination protocol or not.
-    bool finished = _cm->terminator()->offer_termination(this);
+    bool finished = (is_serial ||
+                     _cm->terminator()->offer_termination(this));
     double termination_end_time_ms = os::elapsedVTime() * 1000.0;
     _termination_time_ms +=
       termination_end_time_ms - _termination_start_time_ms;
@@ -4320,20 +4402,28 @@ void CMTask::do_marking_step(double time_target_ms,
         gclog_or_tty->print_cr("[%u] detected overflow", _worker_id);
       }
 
-      _cm->enter_first_sync_barrier(_worker_id);
-      // When we exit this sync barrier we know that all tasks have
-      // stopped doing marking work. So, it's now safe to
-      // re-initialise our data structures. At the end of this method,
-      // task 0 will clear the global data structures.
+      if (!is_serial) {
+        // We only need to enter the sync barrier if being called
+        // from a parallel context
+        _cm->enter_first_sync_barrier(_worker_id);
+
+        // When we exit this sync barrier we know that all tasks have
+        // stopped doing marking work. So, it's now safe to
+        // re-initialise our data structures. At the end of this method,
+        // task 0 will clear the global data structures.
+      }
 
       statsOnly( ++_aborted_overflow );
 
       // We clear the local state of this task...
       clear_region_fields();
 
-      // ...and enter the second barrier.
-      _cm->enter_second_sync_barrier(_worker_id);
-      // At this point everything has bee re-initialised and we're
+      if (!is_serial) {
+        // ...and enter the second barrier.
+        _cm->enter_second_sync_barrier(_worker_id);
+      }
+      // At this point, if we're during the concurrent phase of
+      // marking, everything has been re-initialized and we're
       // ready to restart.
     }
 
diff --git a/src/share/vm/gc_implementation/g1/concurrentMark.hpp b/src/share/vm/gc_implementation/g1/concurrentMark.hpp
index 61e64df8b..43554a5c9 100644
--- a/src/share/vm/gc_implementation/g1/concurrentMark.hpp
+++ b/src/share/vm/gc_implementation/g1/concurrentMark.hpp
@@ -166,7 +166,7 @@ class CMBitMap : public CMBitMapRO {
 class CMMarkStack VALUE_OBJ_CLASS_SPEC {
   VirtualSpace _virtual_space;   // Underlying backing store for actual stack
   ConcurrentMark* _cm;
-  oop*   _base;        // bottom of stack
+  oop* _base;        // bottom of stack
   jint _index;       // one more than last occupied index
   jint _capacity;    // max #elements
   jint _saved_index; // value of _index saved at start of GC
@@ -491,9 +491,12 @@ protected:
   // structures are initialised to a sensible and predictable state.
   void set_non_marking_state();
 
+  // Called to indicate how many threads are currently active.
+  void set_concurrency(uint active_tasks);
+
   // It should be called to indicate which phase we're in (concurrent
   // mark or remark) and how many threads are currently active.
-  void set_phase(uint active_tasks, bool concurrent);
+  void set_concurrency_and_phase(uint active_tasks, bool concurrent);
 
   // prints all gathered CM-related statistics
   void print_stats();
@@ -1146,7 +1149,9 @@ public:
   // trying not to exceed the given duration. However, it might exit
   // prematurely, according to some conditions (i.e. SATB buffers are
   // available for processing).
-  void do_marking_step(double target_ms, bool do_stealing, bool do_termination);
+  void do_marking_step(double target_ms,
+                       bool do_termination,
+                       bool is_serial);
 
   // These two calls start and stop the timer
   void record_start_time() {
diff --git a/src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.cpp b/src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.cpp
index 21e08b6f8..0c39e69e1 100644
--- a/src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.cpp
+++ b/src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.cpp
@@ -656,7 +656,7 @@ void ParallelScavengeHeap::print_tracing_info() const {
     tty->print_cr("[Accumulated GC generation 0 time %3.7f secs]", time);
   }
   if (TraceGen1Time) {
-    double time = PSMarkSweep::accumulated_time()->seconds();
+    double time = UseParallelOldGC ? PSParallelCompact::accumulated_time()->seconds() : PSMarkSweep::accumulated_time()->seconds();
     tty->print_cr("[Accumulated GC generation 1 time %3.7f secs]", time);
   }
 }
diff --git a/src/share/vm/interpreter/interpreter.cpp b/src/share/vm/interpreter/interpreter.cpp
index 24de109f3..06554172b 100644
--- a/src/share/vm/interpreter/interpreter.cpp
+++ b/src/share/vm/interpreter/interpreter.cpp
@@ -76,7 +76,7 @@ void InterpreterCodelet::print_on(outputStream* st) const {
 
   if (PrintInterpreter) {
     st->cr();
-    Disassembler::decode(code_begin(), code_end(), st, DEBUG_ONLY(_comments) NOT_DEBUG(CodeComments()));
+    Disassembler::decode(code_begin(), code_end(), st, DEBUG_ONLY(_strings) NOT_DEBUG(CodeStrings()));
   }
 }
 
diff --git a/src/share/vm/interpreter/interpreter.hpp b/src/share/vm/interpreter/interpreter.hpp
index 346af856a..1fb4ac5c8 100644
--- a/src/share/vm/interpreter/interpreter.hpp
+++ b/src/share/vm/interpreter/interpreter.hpp
@@ -48,12 +48,12 @@ class InterpreterCodelet: public Stub {
   int         _size;                             // the size in bytes
   const char* _description;                      // a description of the codelet, for debugging & printing
   Bytecodes::Code _bytecode;                     // associated bytecode if any
-  DEBUG_ONLY(CodeComments _comments;)            // Comments for annotating assembler output.
+  DEBUG_ONLY(CodeStrings _strings;)              // Comments for annotating assembler output.
 
  public:
   // Initialization/finalization
   void    initialize(int size,
-                     CodeComments& comments)     { _size = size; DEBUG_ONLY(_comments.assign(comments);) }
+                     CodeStrings& strings)       { _size = size; DEBUG_ONLY(_strings.assign(strings);) }
   void    finalize()                             { ShouldNotCallThis(); }
 
   // General info/converters
@@ -131,7 +131,7 @@ class CodeletMark: ResourceMark {
 
 
     // commit Codelet
-    AbstractInterpreter::code()->commit((*_masm)->code()->pure_insts_size(), (*_masm)->code()->comments());
+    AbstractInterpreter::code()->commit((*_masm)->code()->pure_insts_size(), (*_masm)->code()->strings());
     // make sure nobody can use _masm outside a CodeletMark lifespan
     *_masm = NULL;
   }
diff --git a/src/share/vm/memory/genCollectedHeap.cpp b/src/share/vm/memory/genCollectedHeap.cpp
index 9d65cc157..6b7402c82 100644
--- a/src/share/vm/memory/genCollectedHeap.cpp
+++ b/src/share/vm/memory/genCollectedHeap.cpp
@@ -554,6 +554,8 @@ void GenCollectedHeap::do_collection(bool  full,
     }
 
     if (complete) {
+      // Delete metaspaces for unloaded class loaders and clean up loader_data graph
+      ClassLoaderDataGraph::purge();
       // Resize the metaspace capacity after full collections
       MetaspaceGC::compute_new_size();
       update_full_collections_completed();
@@ -564,11 +566,6 @@ void GenCollectedHeap::do_collection(bool  full,
 
     gc_epilogue(complete);
 
-    // Delete metaspaces for unloaded class loaders and clean up loader_data graph
-    if (complete) {
-      ClassLoaderDataGraph::purge();
-    }
-
     if (must_restore_marks_for_biased_locking) {
       BiasedLocking::restore_marks();
     }
diff --git a/src/share/vm/memory/metaspace.cpp b/src/share/vm/memory/metaspace.cpp
index af8e8a321..f5b37bbe7 100644
--- a/src/share/vm/memory/metaspace.cpp
+++ b/src/share/vm/memory/metaspace.cpp
@@ -334,6 +334,9 @@ class VirtualSpaceNode : public CHeapObj<mtClass> {
 
   // byte_size is the size of the associated virtualspace.
 VirtualSpaceNode::VirtualSpaceNode(size_t byte_size) : _top(NULL), _next(NULL), _rs(0) {
+  // align up to vm allocation granularity
+  byte_size = align_size_up(byte_size, os::vm_allocation_granularity());
+
   // This allocates memory with mmap.  For DumpSharedspaces, allocate the
   // space at low memory so that other shared images don't conflict.
   // This is the same address as memory needed for UseCompressedOops but
@@ -1100,25 +1103,24 @@ size_t MetaspaceGC::delta_capacity_until_GC(size_t word_size) {
 }
 
 bool MetaspaceGC::should_expand(VirtualSpaceList* vsl, size_t word_size) {
-
-  // Class virtual space should always be expanded.  Call GC for the other
-  // metadata virtual space.
-  if (vsl == Metaspace::class_space_list()) return true;
-
   // If the user wants a limit, impose one.
-  size_t max_metaspace_size_words = MaxMetaspaceSize / BytesPerWord;
-  size_t metaspace_size_words = MetaspaceSize / BytesPerWord;
   if (!FLAG_IS_DEFAULT(MaxMetaspaceSize) &&
-      vsl->capacity_words_sum() >= max_metaspace_size_words) {
+      MetaspaceAux::reserved_in_bytes() >= MaxMetaspaceSize) {
     return false;
   }
 
+  // Class virtual space should always be expanded.  Call GC for the other
+  // metadata virtual space.
+  if (vsl == Metaspace::class_space_list()) return true;
+
   // If this is part of an allocation after a GC, expand
   // unconditionally.
   if(MetaspaceGC::expand_after_GC()) {
     return true;
   }
 
+  size_t metaspace_size_words = MetaspaceSize / BytesPerWord;
+
   // If the capacity is below the minimum capacity, allow the
   // expansion.  Also set the high-water-mark (capacity_until_GC)
   // to that minimum capacity so that a GC will not be induced
@@ -1308,8 +1310,7 @@ void MetaspaceGC::compute_new_size() {
       gclog_or_tty->print_cr("  metaspace HWM: %.1fK", new_capacity_until_GC / (double) K);
     }
   }
-  assert(vsl->used_bytes_sum() == used_after_gc &&
-         used_after_gc <= vsl->capacity_bytes_sum(),
+  assert(used_after_gc <= vsl->capacity_bytes_sum(),
          "sanity check");
 
 }
@@ -1969,6 +1970,9 @@ void SpaceManager::initialize() {
 }
 
 SpaceManager::~SpaceManager() {
+  // This call this->_lock which can't be done while holding expand_lock()
+  const size_t in_use_before = sum_capacity_in_chunks_in_use();
+
   MutexLockerEx fcl(SpaceManager::expand_lock(),
                     Mutex::_no_safepoint_check_flag);
 
@@ -1986,7 +1990,7 @@ SpaceManager::~SpaceManager() {
 
   // Have to update before the chunks_in_use lists are emptied
   // below.
-  chunk_manager->inc_free_chunks_total(sum_capacity_in_chunks_in_use(),
+  chunk_manager->inc_free_chunks_total(in_use_before,
                                        sum_count_in_chunks_in_use());
 
   // Add all the chunks in use by this space manager
diff --git a/src/share/vm/memory/sharedHeap.cpp b/src/share/vm/memory/sharedHeap.cpp
index be641d304..caef7ac7a 100644
--- a/src/share/vm/memory/sharedHeap.cpp
+++ b/src/share/vm/memory/sharedHeap.cpp
@@ -178,7 +178,7 @@ void SharedHeap::process_strong_roots(bool activate_scope,
       SystemDictionary::always_strong_oops_do(roots);
       ClassLoaderDataGraph::always_strong_oops_do(roots, klass_closure, !is_scavenging);
     } else {
-      ShouldNotReachHere2("We should always have selected either SO_AllClasses or SO_SystemClasses");
+      fatal("We should always have selected either SO_AllClasses or SO_SystemClasses");
     }
   }
 
diff --git a/src/share/vm/oops/constantPool.cpp b/src/share/vm/oops/constantPool.cpp
index c025730bb..ba7ec439e 100644
--- a/src/share/vm/oops/constantPool.cpp
+++ b/src/share/vm/oops/constantPool.cpp
@@ -1852,6 +1852,7 @@ void ConstantPool::print_entry_on(const int index, outputStream* st) {
   switch (tag_at(index).value()) {
     case JVM_CONSTANT_Class :
       { Klass* k = klass_at(index, CATCH);
+        guarantee(k != NULL, "need klass");
         k->print_value_on(st);
         st->print(" {0x%lx}", (address)k);
       }
diff --git a/src/share/vm/oops/fieldInfo.hpp b/src/share/vm/oops/fieldInfo.hpp
index 331dc05f3..5da8ed962 100644
--- a/src/share/vm/oops/fieldInfo.hpp
+++ b/src/share/vm/oops/fieldInfo.hpp
@@ -108,11 +108,11 @@ class FieldInfo VALUE_OBJ_CLASS_SPEC {
         return build_int_from_shorts(_shorts[low_packed_offset], _shorts[high_packed_offset]) >> FIELDINFO_TAG_SIZE;
 #ifndef PRODUCT
       case FIELDINFO_TAG_TYPE_PLAIN:
-        ShouldNotReachHere2("Asking offset for the plain type field");
+        fatal("Asking offset for the plain type field");
       case FIELDINFO_TAG_TYPE_CONTENDED:
-        ShouldNotReachHere2("Asking offset for the contended type field");
+        fatal("Asking offset for the contended type field");
       case FIELDINFO_TAG_BLANK:
-        ShouldNotReachHere2("Asking offset for the blank field");
+        fatal("Asking offset for the blank field");
 #endif
     }
     ShouldNotReachHere();
@@ -128,9 +128,9 @@ class FieldInfo VALUE_OBJ_CLASS_SPEC {
         return true;
 #ifndef PRODUCT
       case FIELDINFO_TAG_OFFSET:
-        ShouldNotReachHere2("Asking contended flag for the field with offset");
+        fatal("Asking contended flag for the field with offset");
       case FIELDINFO_TAG_BLANK:
-        ShouldNotReachHere2("Asking contended flag for the blank field");
+        fatal("Asking contended flag for the blank field");
 #endif
     }
     ShouldNotReachHere();
@@ -146,9 +146,9 @@ class FieldInfo VALUE_OBJ_CLASS_SPEC {
         return _shorts[high_packed_offset];
 #ifndef PRODUCT
       case FIELDINFO_TAG_OFFSET:
-        ShouldNotReachHere2("Asking the contended group for the field with offset");
+        fatal("Asking the contended group for the field with offset");
       case FIELDINFO_TAG_BLANK:
-        ShouldNotReachHere2("Asking the contended group for the blank field");
+        fatal("Asking the contended group for the blank field");
 #endif
     }
     ShouldNotReachHere();
@@ -163,9 +163,9 @@ class FieldInfo VALUE_OBJ_CLASS_SPEC {
         return (lo >> FIELDINFO_TAG_SIZE);
 #ifndef PRODUCT
       case FIELDINFO_TAG_OFFSET:
-        ShouldNotReachHere2("Asking the field type for field with offset");
+        fatal("Asking the field type for field with offset");
       case FIELDINFO_TAG_BLANK:
-        ShouldNotReachHere2("Asking the field type for the blank field");
+        fatal("Asking the field type for the blank field");
 #endif
     }
     ShouldNotReachHere();
@@ -211,7 +211,7 @@ class FieldInfo VALUE_OBJ_CLASS_SPEC {
       case FIELDINFO_TAG_TYPE_PLAIN:
       case FIELDINFO_TAG_TYPE_CONTENDED:
       case FIELDINFO_TAG_OFFSET:
-        ShouldNotReachHere2("Setting the field type with overwriting");
+        fatal("Setting the field type with overwriting");
 #endif
     }
     ShouldNotReachHere();
@@ -226,11 +226,11 @@ class FieldInfo VALUE_OBJ_CLASS_SPEC {
         return;
 #ifndef PRODUCT
       case FIELDINFO_TAG_TYPE_CONTENDED:
-        ShouldNotReachHere2("Overwriting contended group");
+        fatal("Overwriting contended group");
       case FIELDINFO_TAG_BLANK:
-        ShouldNotReachHere2("Setting contended group for the blank field");
+        fatal("Setting contended group for the blank field");
       case FIELDINFO_TAG_OFFSET:
-        ShouldNotReachHere2("Setting contended group for field with offset");
+        fatal("Setting contended group for field with offset");
 #endif
     }
     ShouldNotReachHere();
diff --git a/src/share/vm/oops/generateOopMap.cpp b/src/share/vm/oops/generateOopMap.cpp
index 96572a64e..8c12b7ac7 100644
--- a/src/share/vm/oops/generateOopMap.cpp
+++ b/src/share/vm/oops/generateOopMap.cpp
@@ -762,6 +762,7 @@ void GenerateOopMap::copy_state(CellTypeState *dst, CellTypeState *src) {
 // monitor matching is purely informational and doesn't say anything
 // about the correctness of the code.
 void GenerateOopMap::merge_state_into_bb(BasicBlock *bb) {
+  guarantee(bb != NULL, "null basicblock");
   assert(bb->is_alive(), "merging state into a dead basicblock");
 
   if (_stack_top == bb->_stack_top) {
@@ -1189,6 +1190,7 @@ void GenerateOopMap::do_exception_edge(BytecodeStream* itr) {
 
       if (start_pc <= bci && bci < end_pc) {
         BasicBlock *excBB = get_basic_block_at(handler_pc);
+        guarantee(excBB != NULL, "no basic block for exception");
         CellTypeState *excStk = excBB->stack();
         CellTypeState *cOpStck = stack();
         CellTypeState cOpStck_0 = cOpStck[0];
@@ -1803,6 +1805,7 @@ void GenerateOopMap::do_monitorexit(int bci) {
     // possibility that this bytecode will throw an
     // exception.
     BasicBlock* bb = get_basic_block_containing(bci);
+    guarantee(bb != NULL, "no basic block for bci");
     bb->set_changed(true);
     bb->_monitor_top = bad_monitors;
 
@@ -2190,6 +2193,7 @@ void GenerateOopMap::result_for_basicblock(int bci) {
 
   // Find basicblock and report results
   BasicBlock* bb = get_basic_block_containing(bci);
+  guarantee(bb != NULL, "no basic block for bci");
   assert(bb->is_reachable(), "getting result from unreachable basicblock");
   bb->set_changed(true);
   interp_bb(bb);
diff --git a/src/share/vm/oops/klass.cpp b/src/share/vm/oops/klass.cpp
index edfda97a5..06c644c34 100644
--- a/src/share/vm/oops/klass.cpp
+++ b/src/share/vm/oops/klass.cpp
@@ -486,6 +486,12 @@ void Klass::oops_do(OopClosure* cl) {
 }
 
 void Klass::remove_unshareable_info() {
+  if (!DumpSharedSpaces) {
+    // Clean up after OOM during class loading
+    if (class_loader_data() != NULL) {
+      class_loader_data()->remove_class(this);
+    }
+  }
   set_subklass(NULL);
   set_next_sibling(NULL);
   // Clear the java mirror
diff --git a/src/share/vm/oops/method.cpp b/src/share/vm/oops/method.cpp
index 0ee78f176..11ddd21f1 100644
--- a/src/share/vm/oops/method.cpp
+++ b/src/share/vm/oops/method.cpp
@@ -798,7 +798,15 @@ void Method::unlink_method() {
   backedge_counter()->reset();
   _adapter = NULL;
   _from_compiled_entry = NULL;
-  assert(_method_data == NULL, "unexpected method data?");
+
+  // In case of DumpSharedSpaces, _method_data should always be NULL.
+  //
+  // During runtime (!DumpSharedSpaces), when we are cleaning a
+  // shared class that failed to load, this->link_method() may
+  // have already been called (before an exception happened), so
+  // this->_method_data may not be NULL.
+  assert(!DumpSharedSpaces || _method_data == NULL, "unexpected method data?");
+
   set_method_data(NULL);
   set_interpreter_throwout_count(0);
   set_interpreter_invocation_count(0);
diff --git a/src/share/vm/opto/bytecodeInfo.cpp b/src/share/vm/opto/bytecodeInfo.cpp
index 155bc47e9..6d8f1b3da 100644
--- a/src/share/vm/opto/bytecodeInfo.cpp
+++ b/src/share/vm/opto/bytecodeInfo.cpp
@@ -157,9 +157,10 @@ bool InlineTree::should_inline(ciMethod* callee_method, ciMethod* caller_method,
   } else {
     // Not hot.  Check for medium-sized pre-existing nmethod at cold sites.
     if (callee_method->has_compiled_code() &&
-        callee_method->instructions_size() > inline_small_code_size)
+        callee_method->instructions_size() > inline_small_code_size) {
       set_msg("already compiled into a medium method");
       return false;
+    }
   }
   if (size > max_inline_size) {
     if (max_inline_size > default_max_inline_size) {
diff --git a/src/share/vm/opto/loopTransform.cpp b/src/share/vm/opto/loopTransform.cpp
index b405bbcf6..c438cf9b8 100644
--- a/src/share/vm/opto/loopTransform.cpp
+++ b/src/share/vm/opto/loopTransform.cpp
@@ -888,6 +888,7 @@ void PhaseIdealLoop::insert_pre_post_loops( IdealLoopTree *loop, Node_List &old_
   CountedLoopNode *main_head = loop->_head->as_CountedLoop();
   assert( main_head->is_normal_loop(), "" );
   CountedLoopEndNode *main_end = main_head->loopexit();
+  guarantee(main_end != NULL, "no loop exit node");
   assert( main_end->outcnt() == 2, "1 true, 1 false path only" );
   uint dd_main_head = dom_depth(main_head);
   uint max = main_head->outcnt();
@@ -2554,13 +2555,16 @@ bool PhaseIdealLoop::match_fill_loop(IdealLoopTree* lpt, Node*& store, Node*& st
   ok.set(store->_idx);
   ok.set(store->in(MemNode::Memory)->_idx);
 
+  CountedLoopEndNode* loop_exit = head->loopexit();
+  guarantee(loop_exit != NULL, "no loop exit node");
+
   // Loop structure is ok
   ok.set(head->_idx);
-  ok.set(head->loopexit()->_idx);
+  ok.set(loop_exit->_idx);
   ok.set(head->phi()->_idx);
   ok.set(head->incr()->_idx);
-  ok.set(head->loopexit()->cmp_node()->_idx);
-  ok.set(head->loopexit()->in(1)->_idx);
+  ok.set(loop_exit->cmp_node()->_idx);
+  ok.set(loop_exit->in(1)->_idx);
 
   // Address elements are ok
   if (con)   ok.set(con->_idx);
@@ -2572,7 +2576,7 @@ bool PhaseIdealLoop::match_fill_loop(IdealLoopTree* lpt, Node*& store, Node*& st
     if (n->outcnt() == 0) continue; // Ignore dead
     if (ok.test(n->_idx)) continue;
     // Backedge projection is ok
-    if (n->is_IfTrue() && n->in(0) == head->loopexit()) continue;
+    if (n->is_IfTrue() && n->in(0) == loop_exit) continue;
     if (!n->is_AddP()) {
       msg = "unhandled node";
       msg_node = n;
@@ -2585,7 +2589,7 @@ bool PhaseIdealLoop::match_fill_loop(IdealLoopTree* lpt, Node*& store, Node*& st
     Node* n = lpt->_body.at(i);
     // These values can be replaced with other nodes if they are used
     // outside the loop.
-    if (n == store || n == head->loopexit() || n == head->incr() || n == store->in(MemNode::Memory)) continue;
+    if (n == store || n == loop_exit || n == head->incr() || n == store->in(MemNode::Memory)) continue;
     for (SimpleDUIterator iter(n); iter.has_next(); iter.next()) {
       Node* use = iter.get();
       if (!lpt->_body.contains(use)) {
diff --git a/src/share/vm/opto/loopnode.hpp b/src/share/vm/opto/loopnode.hpp
index 104d7b787..c45ea8421 100644
--- a/src/share/vm/opto/loopnode.hpp
+++ b/src/share/vm/opto/loopnode.hpp
@@ -603,7 +603,10 @@ class PhaseIdealLoop : public PhaseTransform {
   }
 
 public:
-  bool has_node( Node* n ) const { return _nodes[n->_idx] != NULL; }
+  bool has_node( Node* n ) const {
+    guarantee(n != NULL, "No Node.");
+    return _nodes[n->_idx] != NULL;
+  }
   // check if transform created new nodes that need _ctrl recorded
   Node *get_late_ctrl( Node *n, Node *early );
   Node *get_early_ctrl( Node *n );
@@ -737,7 +740,8 @@ private:
     return n;
   }
   uint dom_depth(Node* d) const {
-    assert(d->_idx < _idom_size, "");
+    guarantee(d != NULL, "Null dominator info.");
+    guarantee(d->_idx < _idom_size, "");
     return _dom_depth[d->_idx];
   }
   void set_idom(Node* d, Node* n, uint dom_depth);
diff --git a/src/share/vm/opto/loopopts.cpp b/src/share/vm/opto/loopopts.cpp
index 31f080dbf..1db82d4ce 100644
--- a/src/share/vm/opto/loopopts.cpp
+++ b/src/share/vm/opto/loopopts.cpp
@@ -232,7 +232,11 @@ void PhaseIdealLoop::dominated_by( Node *prevdom, Node *iff, bool flip, bool exc
   // Loop predicates may have depending checks which should not
   // be skipped. For example, range check predicate has two checks
   // for lower and upper bounds.
-  ProjNode* unc_proj = iff->as_If()->proj_out(1 - dp->as_Proj()->_con)->as_Proj();
+  if (dp == NULL)
+    return;
+
+  ProjNode* dp_proj  = dp->as_Proj();
+  ProjNode* unc_proj = iff->as_If()->proj_out(1 - dp_proj->_con)->as_Proj();
   if (exclude_loop_predicate &&
       is_uncommon_trap_proj(unc_proj, Deoptimization::Reason_predicate))
     return; // Let IGVN transformation change control dependence.
@@ -866,8 +870,11 @@ void PhaseIdealLoop::split_if_with_blocks_post( Node *n ) {
 
     // Now split the bool up thru the phi
     Node *bolphi = split_thru_phi( bol, n_ctrl, -1 );
+    guarantee(bolphi != NULL, "null boolean phi node");
+
     _igvn.replace_node( bol, bolphi );
     assert( iff->in(1) == bolphi, "" );
+
     if( bolphi->Value(&_igvn)->singleton() )
       return;
 
@@ -1628,6 +1635,7 @@ ProjNode* PhaseIdealLoop::proj_clone(ProjNode* p, IfNode* iff) {
 //------------------------------ short_circuit_if -------------------------------------
 // Force the iff control output to be the live_proj
 Node* PhaseIdealLoop::short_circuit_if(IfNode* iff, ProjNode* live_proj) {
+  guarantee(live_proj != NULL, "null projection");
   int proj_con = live_proj->_con;
   assert(proj_con == 0 || proj_con == 1, "false or true projection");
   Node *con = _igvn.intcon(proj_con);
@@ -1686,6 +1694,7 @@ ProjNode* PhaseIdealLoop::insert_if_before_proj(Node* left, bool Signed, BoolTes
   set_idom(proj, new_if, ddepth);
 
   ProjNode* new_exit = proj_clone(other_proj, new_if)->as_Proj();
+  guarantee(new_exit != NULL, "null exit node");
   register_node(new_exit, get_loop(other_proj), new_if, ddepth);
 
   return new_exit;
@@ -1793,7 +1802,10 @@ IfNode* PhaseIdealLoop::insert_cmpi_loop_exit(IfNode* if_cmpu, IdealLoopTree *lo
   int stride = stride_of_possible_iv(if_cmpu);
   if (stride == 0) return NULL;
 
-  ProjNode* lp_continue = stay_in_loop(if_cmpu, loop)->as_Proj();
+  Node* lp_proj = stay_in_loop(if_cmpu, loop);
+  guarantee(lp_proj != NULL, "null loop node");
+
+  ProjNode* lp_continue = lp_proj->as_Proj();
   ProjNode* lp_exit     = if_cmpu->proj_out(!lp_continue->is_IfTrue())->as_Proj();
 
   Node* limit = NULL;
@@ -1805,6 +1817,7 @@ IfNode* PhaseIdealLoop::insert_cmpi_loop_exit(IfNode* if_cmpu, IdealLoopTree *lo
   }
   // Create a new region on the exit path
   RegionNode* reg = insert_region_before_proj(lp_exit);
+  guarantee(reg != NULL, "null region node");
 
   // Clone the if-cmpu-true-false using a signed compare
   BoolTest::mask rel_i = stride > 0 ? bol->_test._test : BoolTest::ge;
diff --git a/src/share/vm/opto/output.cpp b/src/share/vm/opto/output.cpp
index b0d7a9948..c77b9f60c 100644
--- a/src/share/vm/opto/output.cpp
+++ b/src/share/vm/opto/output.cpp
@@ -2518,6 +2518,7 @@ void Scheduling::DoScheduling() {
     // Schedule the remaining instructions in the block
     while ( _available.size() > 0 ) {
       Node *n = ChooseNodeToBundle();
+      guarantee(n != NULL, "no nodes available");
       AddNodeToBundle(n,bb);
     }
 
diff --git a/src/share/vm/opto/type.cpp b/src/share/vm/opto/type.cpp
index 3928c23af..68f681342 100644
--- a/src/share/vm/opto/type.cpp
+++ b/src/share/vm/opto/type.cpp
@@ -4193,6 +4193,7 @@ const TypeOopPtr* TypeKlassPtr::as_instance_type() const {
   bool    xk = klass_is_exact();
   //return TypeInstPtr::make(TypePtr::NotNull, k, xk, NULL, 0);
   const TypeOopPtr* toop = TypeOopPtr::make_from_klass_raw(k);
+  guarantee(toop != NULL, "need type for given klass");
   toop = toop->cast_to_ptr_type(TypePtr::NotNull)->is_oopptr();
   return toop->cast_to_exactness(xk)->is_oopptr();
 }
diff --git a/src/share/vm/prims/jni.cpp b/src/share/vm/prims/jni.cpp
index f45568a7c..22716c400 100644
--- a/src/share/vm/prims/jni.cpp
+++ b/src/share/vm/prims/jni.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2012 Red Hat, Inc.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -92,7 +92,7 @@
 # include "os_bsd.inline.hpp"
 #endif
 
-static jint CurrentVersion = JNI_VERSION_1_6;
+static jint CurrentVersion = JNI_VERSION_1_8;
 
 
 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
diff --git a/src/share/vm/prims/jni.h b/src/share/vm/prims/jni.h
index a67c2e540..582f2c970 100644
--- a/src/share/vm/prims/jni.h
+++ b/src/share/vm/prims/jni.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -1951,6 +1951,7 @@ JNI_OnUnload(JavaVM *vm, void *reserved);
 #define JNI_VERSION_1_2 0x00010002
 #define JNI_VERSION_1_4 0x00010004
 #define JNI_VERSION_1_6 0x00010006
+#define JNI_VERSION_1_8 0x00010008
 
 #ifdef __cplusplus
 } /* extern "C" */
diff --git a/src/share/vm/runtime/stubCodeGenerator.cpp b/src/share/vm/runtime/stubCodeGenerator.cpp
index 2ba8e159f..127b5e316 100644
--- a/src/share/vm/runtime/stubCodeGenerator.cpp
+++ b/src/share/vm/runtime/stubCodeGenerator.cpp
@@ -87,7 +87,7 @@ StubCodeGenerator::~StubCodeGenerator() {
     CodeBuffer* cbuf = _masm->code();
     CodeBlob*   blob = CodeCache::find_blob_unsafe(cbuf->insts()->start());
     if (blob != NULL) {
-      blob->set_comments(cbuf->comments());
+      blob->set_strings(cbuf->strings());
     }
     bool saw_first = false;
     StubCodeDesc* toprint[1000];
diff --git a/src/share/vm/runtime/thread.cpp b/src/share/vm/runtime/thread.cpp
index cb883c5d8..322597fe4 100644
--- a/src/share/vm/runtime/thread.cpp
+++ b/src/share/vm/runtime/thread.cpp
@@ -4061,6 +4061,7 @@ jboolean Threads::is_supported_jni_version(jint version) {
   if (version == JNI_VERSION_1_2) return JNI_TRUE;
   if (version == JNI_VERSION_1_4) return JNI_TRUE;
   if (version == JNI_VERSION_1_6) return JNI_TRUE;
+  if (version == JNI_VERSION_1_8) return JNI_TRUE;
   return JNI_FALSE;
 }
 
diff --git a/src/share/vm/runtime/vm_version.cpp b/src/share/vm/runtime/vm_version.cpp
index ef03c76f6..322a5b6c0 100644
--- a/src/share/vm/runtime/vm_version.cpp
+++ b/src/share/vm/runtime/vm_version.cpp
@@ -211,6 +211,10 @@ const char* Abstract_VM_Version::internal_vm_info_string() {
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 8.0 (VS2005)"
       #elif _MSC_VER == 1500
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 9.0 (VS2008)"
+      #elif _MSC_VER == 1600
+        #define HOTSPOT_BUILD_COMPILER "MS VC++ 10.0 (VS2010)"
+      #elif _MSC_VER == 1700
+        #define HOTSPOT_BUILD_COMPILER "MS VC++ 11.0 (VS2012)"
       #else
         #define HOTSPOT_BUILD_COMPILER "unknown MS VC++:" XSTR(_MSC_VER)
       #endif
diff --git a/src/share/vm/services/memoryService.cpp b/src/share/vm/services/memoryService.cpp
index 0040f9d96..75693dbcf 100644
--- a/src/share/vm/services/memoryService.cpp
+++ b/src/share/vm/services/memoryService.cpp
@@ -240,6 +240,7 @@ MemoryPool* MemoryService::add_cms_space(CompactibleFreeListSpace* space,
 void MemoryService::add_generation_memory_pool(Generation* gen,
                                                MemoryManager* major_mgr,
                                                MemoryManager* minor_mgr) {
+  guarantee(gen != NULL, "No generation for memory pool");
   Generation::Name kind = gen->kind();
   int index = _pools_list->length();
 
diff --git a/src/share/vm/utilities/debug.cpp b/src/share/vm/utilities/debug.cpp
index 131f08d44..e74475fc3 100644
--- a/src/share/vm/utilities/debug.cpp
+++ b/src/share/vm/utilities/debug.cpp
@@ -248,10 +248,6 @@ void report_should_not_reach_here(const char* file, int line) {
   report_vm_error(file, line, "ShouldNotReachHere()");
 }
 
-void report_should_not_reach_here2(const char* file, int line, const char* message) {
-  report_vm_error(file, line, "ShouldNotReachHere()", message);
-}
-
 void report_unimplemented(const char* file, int line) {
   report_vm_error(file, line, "Unimplemented()");
 }
diff --git a/src/share/vm/utilities/debug.hpp b/src/share/vm/utilities/debug.hpp
index 515b1286b..0c718a2fe 100644
--- a/src/share/vm/utilities/debug.hpp
+++ b/src/share/vm/utilities/debug.hpp
@@ -192,12 +192,6 @@ do {                                                                         \
   BREAKPOINT;                                                                \
 } while (0)
 
-#define ShouldNotReachHere2(message)                                         \
-do {                                                                         \
-  report_should_not_reach_here2(__FILE__, __LINE__, message);                \
-  BREAKPOINT;                                                                \
-} while (0)
-
 #define Unimplemented()                                                      \
 do {                                                                         \
   report_unimplemented(__FILE__, __LINE__);                                  \
@@ -218,7 +212,6 @@ void report_vm_out_of_memory(const char* file, int line, size_t size,
                              const char* message);
 void report_should_not_call(const char* file, int line);
 void report_should_not_reach_here(const char* file, int line);
-void report_should_not_reach_here2(const char* file, int line, const char* message);
 void report_unimplemented(const char* file, int line);
 void report_untested(const char* file, int line, const char* message);
 
diff --git a/test/compiler/whitebox/CompilerWhiteBoxTest.java b/test/compiler/whitebox/CompilerWhiteBoxTest.java
index ebd5a9af4..02b928158 100644
--- a/test/compiler/whitebox/CompilerWhiteBoxTest.java
+++ b/test/compiler/whitebox/CompilerWhiteBoxTest.java
@@ -35,6 +35,8 @@ public abstract class CompilerWhiteBoxTest {
     protected static final Method METHOD = getMethod("method");
     protected static final int COMPILE_THRESHOLD
             = Integer.parseInt(getVMOption("CompileThreshold", "10000"));
+    protected static final boolean BACKGROUND_COMPILATION
+            = Boolean.valueOf(getVMOption("BackgroundCompilation", "true"));
 
     protected static Method getMethod(String name) {
         try {
@@ -45,11 +47,16 @@ public abstract class CompilerWhiteBoxTest {
         }
     }
 
-    protected static String getVMOption(String name, String defaultValue) {
+    protected static String getVMOption(String name) {
         String result;
         HotSpotDiagnosticMXBean diagnostic
                 = ManagementFactoryHelper.getDiagnosticMXBean();
         result = diagnostic.getVMOption(name).getValue();
+        return result;
+    }
+
+    protected static String getVMOption(String name, String defaultValue) {
+        String result = getVMOption(name);
         return result == null ? defaultValue : result;
     }
 
@@ -66,6 +73,7 @@ public abstract class CompilerWhiteBoxTest {
         } catch (Exception e) {
             System.out.printf("on exception '%s':", e.getMessage());
             printInfo(METHOD);
+            e.printStackTrace();
             throw new RuntimeException(e);
         }
         System.out.println("at test's end:");
@@ -100,6 +108,9 @@ public abstract class CompilerWhiteBoxTest {
 
     protected static void waitBackgroundCompilation(Method method)
             throws InterruptedException {
+        if (!BACKGROUND_COMPILATION) {
+            return;
+        }
         final Object obj = new Object();
         synchronized (obj) {
             for (int i = 0; i < 10; ++i) {
@@ -129,13 +140,14 @@ public abstract class CompilerWhiteBoxTest {
 
     protected final int compile() {
         int result = 0;
-        for (int i = 0; i < COMPILE_THRESHOLD; ++i) {
+        int count = Math.max(COMPILE_THRESHOLD, 150000);
+        for (int i = 0; i < count; ++i) {
             result += method();
         }
+        System.out.println("method was invoked " + count + " times");
         return result;
     }
 
-
     protected int method() {
         return 42;
     }
diff --git a/test/compiler/whitebox/DeoptimizeAllTest.java b/test/compiler/whitebox/DeoptimizeAllTest.java
index 7690e6a90..fdf498c31 100644
--- a/test/compiler/whitebox/DeoptimizeAllTest.java
+++ b/test/compiler/whitebox/DeoptimizeAllTest.java
@@ -32,12 +32,12 @@
 public class DeoptimizeAllTest extends CompilerWhiteBoxTest {
 
     public static void main(String[] args) throws Exception {
+        // to prevent inlining #method into #compile()
+        WHITE_BOX.setDontInlineMethod(METHOD, true);
         new DeoptimizeAllTest().runTest();
     }
 
     protected void test() throws Exception {
-        // to prevent inlining #method into #compile()
-        WHITE_BOX.setDontInlineMethod(METHOD, true);
         compile();
         checkCompiled(METHOD);
         WHITE_BOX.deoptimizeAll();
diff --git a/test/compiler/whitebox/DeoptimizeMethodTest.java b/test/compiler/whitebox/DeoptimizeMethodTest.java
index bc1c9d679..7894c524f 100644
--- a/test/compiler/whitebox/DeoptimizeMethodTest.java
+++ b/test/compiler/whitebox/DeoptimizeMethodTest.java
@@ -32,12 +32,12 @@
 public class DeoptimizeMethodTest extends CompilerWhiteBoxTest {
 
     public static void main(String[] args) throws Exception {
+        // to prevent inlining #method into #compile()
+        WHITE_BOX.setDontInlineMethod(METHOD, true);
         new DeoptimizeMethodTest().runTest();
     }
 
     protected void test() throws Exception {
-        // to prevent inlining #method into #compile()
-        WHITE_BOX.setDontInlineMethod(METHOD, true);
         compile();
         checkCompiled(METHOD);
         WHITE_BOX.deoptimizeMethod(METHOD);
diff --git a/test/compiler/whitebox/IsMethodCompilableTest.java b/test/compiler/whitebox/IsMethodCompilableTest.java
index d0c102f54..374d48402 100644
--- a/test/compiler/whitebox/IsMethodCompilableTest.java
+++ b/test/compiler/whitebox/IsMethodCompilableTest.java
@@ -44,6 +44,8 @@ public class IsMethodCompilableTest extends CompilerWhiteBoxTest {
     }
 
     public static void main(String[] args) throws Exception {
+        // to prevent inlining #method into #compile()
+        WHITE_BOX.setDontInlineMethod(METHOD, true);
         new IsMethodCompilableTest().runTest();
     }
 
@@ -58,8 +60,6 @@ public class IsMethodCompilableTest extends CompilerWhiteBoxTest {
                     "Warning: test is not applicable if PerMethodRecompilationCutoff == Inf");
             return;
         }
-        // to prevent inlining #method into #compile()
-        WHITE_BOX.setDontInlineMethod(METHOD, true);
         boolean madeNotCompilable = false;
 
         for (long i = 0; i < PER_METHOD_RECOMPILATION_CUTOFF; ++i) {
diff --git a/test/compiler/whitebox/MakeMethodNotCompilableTest.java b/test/compiler/whitebox/MakeMethodNotCompilableTest.java
index ad4930b64..0b9144c40 100644
--- a/test/compiler/whitebox/MakeMethodNotCompilableTest.java
+++ b/test/compiler/whitebox/MakeMethodNotCompilableTest.java
@@ -32,6 +32,8 @@
 public class MakeMethodNotCompilableTest extends CompilerWhiteBoxTest {
 
     public static void main(String[] args) throws Exception {
+        // to prevent inlining #method into #compile()
+        WHITE_BOX.setDontInlineMethod(METHOD, true);
         new MakeMethodNotCompilableTest().runTest();
     }