[PATCH] x86-64: Fix CFI information

Being the foundation for reliable stack unwinding, this fixes CFI unwind
annotations in many low-level x86_64 routines, plus a config option
(available to all architectures, and also present in the previously sent
patch adding such annotations to i386 code) to enable them separatly
rather than only along with adding full debug information.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/asm-x86_64/dwarf2.h b/include/asm-x86_64/dwarf2.h
index afd4212e860b..582757fc0365 100644
--- a/include/asm-x86_64/dwarf2.h
+++ b/include/asm-x86_64/dwarf2.h
@@ -24,6 +24,10 @@
 #define CFI_ADJUST_CFA_OFFSET .cfi_adjust_cfa_offset
 #define CFI_OFFSET .cfi_offset
 #define CFI_REL_OFFSET .cfi_rel_offset
+#define CFI_REGISTER .cfi_register
+#define CFI_RESTORE .cfi_restore
+#define CFI_REMEMBER_STATE .cfi_remember_state
+#define CFI_RESTORE_STATE .cfi_restore_state
 
 #else
 
@@ -36,6 +40,10 @@
 #define CFI_ADJUST_CFA_OFFSET   #
 #define CFI_OFFSET      #
 #define CFI_REL_OFFSET  #
+#define CFI_REGISTER    #
+#define CFI_RESTORE     #
+#define CFI_REMEMBER_STATE      #
+#define CFI_RESTORE_STATE       #
 
 #endif