diff options
Diffstat (limited to 'src/os_cpu/linux_ppc/vm/thread_linux_ppc.hpp')
-rw-r--r-- | src/os_cpu/linux_ppc/vm/thread_linux_ppc.hpp | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/src/os_cpu/linux_ppc/vm/thread_linux_ppc.hpp b/src/os_cpu/linux_ppc/vm/thread_linux_ppc.hpp new file mode 100644 index 000000000..237070ec1 --- /dev/null +++ b/src/os_cpu/linux_ppc/vm/thread_linux_ppc.hpp @@ -0,0 +1,83 @@ +/* + * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. + * Copyright 2012, 2013 SAP AG. 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. + * + */ + +#ifndef OS_CPU_LINUX_PPC_VM_THREAD_LINUX_PPC_HPP +#define OS_CPU_LINUX_PPC_VM_THREAD_LINUX_PPC_HPP + + private: + + void pd_initialize() { + _anchor.clear(); + _last_interpreter_fp = NULL; + } + + // The `last' frame is the youngest Java frame on the thread's stack. + frame pd_last_frame() { + assert(has_last_Java_frame(), "must have last_Java_sp() when suspended"); + + intptr_t* sp = last_Java_sp(); + address pc = _anchor.last_Java_pc(); + + // Last_Java_pc ist not set, if we come here from compiled code. + if (pc == NULL) { + pc = (address) *(sp + 2); + } + + return frame(sp, pc); + } + + public: + + void set_base_of_stack_pointer(intptr_t* base_sp) {} + intptr_t* base_of_stack_pointer() { return NULL; } + void record_base_of_stack_pointer() {} + + // These routines are only used on cpu architectures that + // have separate register stacks (Itanium). + static bool register_stack_overflow() { return false; } + static void enable_register_stack_guard() {} + static void disable_register_stack_guard() {} + + bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext, bool isInJava); + + protected: + + // -Xprof support + // + // In order to find the last Java fp from an async profile + // tick, we store the current interpreter fp in the thread. + // This value is only valid while we are in the C++ interpreter + // and profiling. + intptr_t *_last_interpreter_fp; + + public: + + static ByteSize last_interpreter_fp_offset() { + return byte_offset_of(JavaThread, _last_interpreter_fp); + } + + intptr_t* last_interpreter_fp() { return _last_interpreter_fp; } + +#endif // OS_CPU_LINUX_PPC_VM_THREAD_LINUX_PPC_HPP |