From: Russ Cox <rsc@golang.org>
Date: Wed, 13 Jan 2010 17:08:39 +0000 (-0800)
Subject: runtime: reset DF flag after running external code on 386
X-Git-Tag: weekly.2010-01-13~11
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=f85abf01bcc4543453a1941a8e1734471b6451a5;p=gostls13.git

runtime: reset DF flag after running external code on 386

R=r
CC=golang-dev
https://golang.org/cl/186108
---

diff --git a/src/pkg/runtime/386/asm.s b/src/pkg/runtime/386/asm.s
index 11ce3f6b6f..aa0fd95bb4 100644
--- a/src/pkg/runtime/386/asm.s
+++ b/src/pkg/runtime/386/asm.s
@@ -350,6 +350,10 @@ TEXT	runcgo(SB),7,$16
 	MOVL	CX, 4(SP)
 	MOVL	BX, 0(SP)
 	CALL	AX
+	
+	// Back; switch to original stack, re-establish
+	// "DF is clear" invariant.
+	CLD
 	MOVL	4(SP), SP
 	RET