commit ef7705f6dd1dacdc3d3cf97893dd942b37b61744
author Akshat Kumar <seed@mail.nanosouffle.net> Sat Mar 09 05:39:15 2013 +0100
committer Ron Minnich <rminnich@gmail.com> Sat Mar 09 05:39:15 2013 +0100
tree bd923035d1a65910ab98727b01cce9f207bed1cc
parent cd94cabad6091af76c2d4950f11442bdb40b7b46

runtime: Plan 9: fix errstr

The call to the C function runtime.findnull() requires
that we provide the argument at 0(SP).

R=rsc, rminnich, ality
CC=golang-dev
https://golang.org/cl/7559047

src/pkg/runtime/sys_plan9_386.s

diff --git a/src/pkg/runtime/sys_plan9_386.s b/src/pkg/runtime/sys_plan9_386.s
index 09211e8..1f860a9 100644
--- a/src/pkg/runtime/sys_plan9_386.s
+++ b/src/pkg/runtime/sys_plan9_386.s
@@ -187,6 +187,13 @@
 	MOVL	$ERRMAX, 8(SP)
 	MOVL	$41, AX
 	INT	$64
+
+	// syscall requires caller-save
+	MOVL	4(SP), CX
+
+	// push the argument
+	PUSHL	CX
 	CALL	runtime·findnull(SB)
+	POPL	CX
 	MOVL	AX, 8(SP)
 	RET