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authorAl Viro <viro@parcelfarce.linux.theplanet.co.uk>2005-05-05 16:15:25 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-05 16:36:35 -0700
commita31769ed3ee82198fd530cb1d79ee9c7f8eeb1d1 (patch)
treed512ffff086b47597e7bb1b431aa65353b113cc5
parent6bae32d395b532959703462c21248fbeb9894e95 (diff)
[PATCH] uml: cross-build support : kernel_offsets
The next group of helpers is a bit trickier - they want the constants similar to those in user-offsets.h, but we need target sc.h for it. So we can't put that into user-offsets (sc.h depends on it) and need the second generated header for that stuff (kernel-offsets.h. BFD... Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--arch/um/Makefile13
-rw-r--r--arch/um/include/common-offsets.h14
-rw-r--r--arch/um/sys-i386/kernel-offsets.c25
-rw-r--r--arch/um/sys-x86_64/kernel-offsets.c24
4 files changed, 76 insertions, 0 deletions
diff --git a/arch/um/Makefile b/arch/um/Makefile
index 46a332f96e3..df492d8afe9 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -174,6 +174,19 @@ $(ARCH_DIR)/user-offsets.h: $(ARCH_DIR)/user-offsets.s
CLEAN_FILES += $(ARCH_DIR)/user-offsets.s $(ARCH_DIR)/user-offsets.h
+$(ARCH_DIR)/kernel-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/kernel-offsets.c \
+ $(ARCH_SYMLINKS) \
+ $(SYS_DIR)/sc.h \
+ include/asm include/linux/version.h \
+ include/config/MARKER \
+ $(ARCH_DIR)/include/user_constants.h
+ $(CC) $(CFLAGS) $(NOSTDINC_FLAGS) $(CPPFLAGS) -S -o $@ $<
+
+$(ARCH_DIR)/kernel-offsets.h: $(ARCH_DIR)/kernel-offsets.s
+ $(call filechk,gen-asm-offsets)
+
+CLEAN_FILES += $(ARCH_DIR)/kernel-offsets.s $(ARCH_DIR)/kernel-offsets.h
+
$(ARCH_DIR)/include/task.h: $(ARCH_DIR)/util/mk_task
$(call filechk,gen_header)
diff --git a/arch/um/include/common-offsets.h b/arch/um/include/common-offsets.h
new file mode 100644
index 00000000000..d705daa2d85
--- /dev/null
+++ b/arch/um/include/common-offsets.h
@@ -0,0 +1,14 @@
+/* for use by sys-$SUBARCH/kernel-offsets.c */
+
+OFFSET(TASK_REGS, task_struct, thread.regs);
+OFFSET(TASK_PID, task_struct, pid);
+DEFINE(UM_KERN_PAGE_SIZE, PAGE_SIZE);
+DEFINE(UM_NSEC_PER_SEC, NSEC_PER_SEC);
+DEFINE_STR(UM_KERN_EMERG, KERN_EMERG);
+DEFINE_STR(UM_KERN_ALERT, KERN_ALERT);
+DEFINE_STR(UM_KERN_CRIT, KERN_CRIT);
+DEFINE_STR(UM_KERN_ERR, KERN_ERR);
+DEFINE_STR(UM_KERN_WARNING, KERN_WARNING);
+DEFINE_STR(UM_KERN_NOTICE, KERN_NOTICE);
+DEFINE_STR(UM_KERN_INFO, KERN_INFO);
+DEFINE_STR(UM_KERN_DEBUG, KERN_DEBUG);
diff --git a/arch/um/sys-i386/kernel-offsets.c b/arch/um/sys-i386/kernel-offsets.c
new file mode 100644
index 00000000000..9f8ecd1fdd9
--- /dev/null
+++ b/arch/um/sys-i386/kernel-offsets.c
@@ -0,0 +1,25 @@
+#include <linux/config.h>
+#include <linux/stddef.h>
+#include <linux/sched.h>
+#include <linux/time.h>
+#include <asm/page.h>
+
+#define DEFINE(sym, val) \
+ asm volatile("\n->" #sym " %0 " #val : : "i" (val))
+
+#define STR(x) #x
+#define DEFINE_STR(sym, val) asm volatile("\n->" #sym " " STR(val) " " #val: : )
+
+#define BLANK() asm volatile("\n->" : : )
+
+#define OFFSET(sym, str, mem) \
+ DEFINE(sym, offsetof(struct str, mem));
+
+void foo(void)
+{
+ OFFSET(TASK_DEBUGREGS, task_struct, thread.arch.debugregs);
+#ifdef CONFIG_MODE_TT
+ OFFSET(TASK_EXTERN_PID, task_struct, thread.mode.tt.extern_pid);
+#endif
+#include <common-offsets.h>
+}
diff --git a/arch/um/sys-x86_64/kernel-offsets.c b/arch/um/sys-x86_64/kernel-offsets.c
new file mode 100644
index 00000000000..220e875cbe2
--- /dev/null
+++ b/arch/um/sys-x86_64/kernel-offsets.c
@@ -0,0 +1,24 @@
+#include <linux/config.h>
+#include <linux/stddef.h>
+#include <linux/sched.h>
+#include <linux/time.h>
+#include <asm/page.h>
+
+#define DEFINE(sym, val) \
+ asm volatile("\n->" #sym " %0 " #val : : "i" (val))
+
+#define DEFINE_STR1(x) #x
+#define DEFINE_STR(sym, val) asm volatile("\n->" #sym " " DEFINE_STR1(val) " " #val: : )
+
+#define BLANK() asm volatile("\n->" : : )
+
+#define OFFSET(sym, str, mem) \
+ DEFINE(sym, offsetof(struct str, mem));
+
+void foo(void)
+{
+#ifdef CONFIG_MODE_TT
+ OFFSET(TASK_EXTERN_PID, task_struct, thread.mode.tt.extern_pid);
+#endif
+#include <common-offsets.h>
+}