X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/catacomb/blobdiff_plain/28321c96c5c2ea4ee8d9a2b48ad5b63499029d5b..f71dd54d995dcffeb73fb41132a60b6ae62d2ea3:/base/asm-common.h

diff --git a/base/asm-common.h b/base/asm-common.h
index 0b5f2238..0d32ccf9 100644
--- a/base/asm-common.h
+++ b/base/asm-common.h
@@ -100,6 +100,14 @@ name:
 // Set the function hooks.
 #define FUNC_PREHOOK(_) .balign 16
 
+// On Windows, arrange to install stack-unwinding data.
+#if CPUFAM_AMD64 && ABI_WIN
+#  define FUNC_POSTHOOK(name) .seh_proc name
+#  define ENDFUNC_HOOK(_) .seh_endproc
+// Procedures are expected to invoke `.seh_setframe' if necessary, and
+// `.seh_pushreg' and friends, and `.seh_endprologue'.
+#endif
+
 // Don't use the wretched AT&T syntax.  It's festooned with pointless
 // punctuation, and all of the data movement is backwards.  Ugh!
 	.intel_syntax noprefix