1 files changed, 42 insertions, 0 deletions

diff --git a/include/asm-x86_64/dwarf2.h b/include/asm-x86_64/dwarf2.h
new file mode 100644
index 000000000000..afd4212e860b
--- /dev/null
+++ b/include/asm-x86_64/dwarf2.h
@@ -0,0 +1,42 @@
+#ifndef _DWARF2_H
+#define _DWARF2_H 1
+
+#include <linux/config.h>
+
+#ifndef __ASSEMBLY__
+#warning "asm/dwarf2.h should be only included in pure assembly files"
+#endif
+
+/* 
+   Macros for dwarf2 CFI unwind table entries.
+   See "as.info" for details on these pseudo ops. Unfortunately 
+   they are only supported in very new binutils, so define them 
+   away for older version. 
+ */
+
+#ifdef CONFIG_DEBUG_INFO
+
+#define CFI_STARTPROC .cfi_startproc
+#define CFI_ENDPROC .cfi_endproc
+#define CFI_DEF_CFA .cfi_def_cfa
+#define CFI_DEF_CFA_REGISTER .cfi_def_cfa_register
+#define CFI_DEF_CFA_OFFSET .cfi_def_cfa_offset
+#define CFI_ADJUST_CFA_OFFSET .cfi_adjust_cfa_offset
+#define CFI_OFFSET .cfi_offset
+#define CFI_REL_OFFSET .cfi_rel_offset
+
+#else
+
+/* use assembler line comment character # to ignore the arguments. */
+#define CFI_STARTPROC   #
+#define CFI_ENDPROC     #
+#define CFI_DEF_CFA     #
+#define CFI_DEF_CFA_REGISTER    #
+#define CFI_DEF_CFA_OFFSET      #
+#define CFI_ADJUST_CFA_OFFSET   #
+#define CFI_OFFSET      #
+#define CFI_REL_OFFSET  #
+
+#endif
+
+#endif