From: Rémy Oudompheng <oudomphe@phare.normalesup.org>
Date: Fri, 7 Mar 2014 18:44:35 +0000 (+0100)
Subject: liblink: fix morestack handling on amd64p32.
X-Git-Tag: go1.3beta1~425
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=9460cf78257fd8326827f1564da5da29b3bb8089;p=gostls13.git

liblink: fix morestack handling on amd64p32.

It was using MOVL to pass a 64-bit argument
(concatenated framesize and argsize) to morestack11.

LGTM=dave, rsc
R=dave, rsc, iant
CC=golang-codereviews
https://golang.org/cl/72360044
---

diff --git a/src/liblink/obj6.c b/src/liblink/obj6.c
index 036e20c8d4..6cfa67f09e 100644
--- a/src/liblink/obj6.c
+++ b/src/liblink/obj6.c
@@ -862,7 +862,8 @@ stacksplit(Link *ctxt, Prog *p, int32 framesize, int32 textarg, int noctxt, Prog
 		p->to.type = D_BRANCH;
 		p->to.sym = ctxt->symmorestack[2*2+noctxt];
 	} else {
-		p->as = mov;
+		// Pass framesize and argsize.
+		p->as = AMOVQ;
 		p->from.type = D_CONST;
 		p->from.offset = (uint64)moreconst2 << 32;
 		p->from.offset |= moreconst1;