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-rw-r--r--sys/arch/amd64/amd64/locore.S3
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/arch/amd64/amd64/locore.S b/sys/arch/amd64/amd64/locore.S
index b23921787bb..16fe9ef57e3 100644
--- a/sys/arch/amd64/amd64/locore.S
+++ b/sys/arch/amd64/amd64/locore.S
@@ -1,4 +1,4 @@
-/* $OpenBSD: locore.S,v 1.48 2011/07/04 15:54:24 guenther Exp $ */
+/* $OpenBSD: locore.S,v 1.49 2011/09/03 01:21:00 guenther Exp $ */
/* $NetBSD: locore.S,v 1.13 2004/03/25 18:33:17 drochner Exp $ */
/*
@@ -637,6 +637,7 @@ longmode_hi:
/*
* Signal trampoline; copied to top of user stack.
+ * gdb's backtrace logic matches against the instructions in this.
*/
NENTRY(sigcode)
call *%rax