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-rw-r--r--include/asm-x86/frame.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/include/asm-x86/frame.h b/include/asm-x86/frame.h
new file mode 100644
index 0000000..06850a7
--- /dev/null
+++ b/include/asm-x86/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__ */
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