x86: Use .cfi_sections for assembly code

[sfrench/cifs-2.6.git] / arch / x86 / include / asm / dwarf2.h

diff --git a/arch/x86/include/asm/dwarf2.h b/arch/x86/include/asm/dwarf2.h
index ae6253ab90294c89d4d009f370a6a0046431971b..733f7e91e7a99f45435a6b46c831ff3e6e9c05da 100644 (file)
--- a/arch/x86/include/asm/dwarf2.h
+++ b/arch/x86/include/asm/dwarf2.h
@@ -34,6 +34,18 @@
 #define CFI_SIGNAL_FRAME
 #endif
 
+#if defined(CONFIG_AS_CFI_SECTIONS) && defined(__ASSEMBLY__)
+       /*
+        * Emit CFI data in .debug_frame sections, not .eh_frame sections.
+        * The latter we currently just discard since we don't do DWARF
+        * unwinding at runtime.  So only the offline DWARF information is
+        * useful to anyone.  Note we should not use this directive if this
+        * file is used in the vDSO assembly, or if vmlinux.lds.S gets
+        * changed so it doesn't discard .eh_frame.
+        */
+       .cfi_sections .debug_frame
+#endif
+
 #else
 
 /*