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authorIngo Molnar <mingo@elte.hu>2008-10-28 16:54:49 +0100
committerIngo Molnar <mingo@elte.hu>2008-10-28 16:54:49 +0100
commitd1a76187a5be4f89c6cb19d800cb5fb7aac735c5 (patch)
tree2fac3ffbfffc7560eeef8364b541d0d7a0057920 /arch/x86/include/asm/frame.h
parentc7e78cff6b7518212247fb20b1dc6411540dc9af (diff)
parent0173a3265b228da319ceb9c1ec6a5682fd1b2d92 (diff)
Merge commit 'v2.6.28-rc2' into core/locking
Conflicts: arch/um/include/asm/system.h
Diffstat (limited to 'arch/x86/include/asm/frame.h')
-rw-r--r--arch/x86/include/asm/frame.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/x86/include/asm/frame.h b/arch/x86/include/asm/frame.h
new file mode 100644
index 000000000000..06850a7194e1
--- /dev/null
+++ b/arch/x86/include/asm/frame.h
@@ -0,0 +1,27 @@
+#ifdef __ASSEMBLY__
+
+#include <asm/dwarf2.h>
+
+/* The annotation hides the frame from the unwinder and makes it look
+ like a ordinary ebp save/restore. This avoids some special cases for
+ frame pointer later */
+#ifdef CONFIG_FRAME_POINTER
+ .macro FRAME
+ pushl %ebp
+ CFI_ADJUST_CFA_OFFSET 4
+ CFI_REL_OFFSET ebp,0
+ movl %esp,%ebp
+ .endm
+ .macro ENDFRAME
+ popl %ebp
+ CFI_ADJUST_CFA_OFFSET -4
+ CFI_RESTORE ebp
+ .endm
+#else
+ .macro FRAME
+ .endm
+ .macro ENDFRAME
+ .endm
+#endif
+
+#endif /* __ASSEMBLY__ */