From a3785ca2cc1c8693d89ebe44216acf781a634718 Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Wed, 21 Apr 2004 19:29:04 +0000
Subject: Tweaks to make libthread tell Valgrind about its stack limits, so
 that Valgrind can detect stack overflow for me.

---
 src/libthread/asm-FreeBSD-386.s | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'src/libthread/asm-FreeBSD-386.s')

diff --git a/src/libthread/asm-FreeBSD-386.s b/src/libthread/asm-FreeBSD-386.s
index 35e2ab6f..c815ac58 100644
--- a/src/libthread/asm-FreeBSD-386.s
+++ b/src/libthread/asm-FreeBSD-386.s
@@ -17,6 +17,9 @@ _setlabel:
 .type	_gotolabel,@function
 
 _gotolabel:
+	pushl $1
+	call _threadinswitch
+	popl %eax
 	movl	4(%esp), %edx
 	movl	0(%edx), %ecx
 	movl	4(%edx), %ebx
@@ -24,9 +27,12 @@ _gotolabel:
 	movl	12(%edx), %ebp
 	movl	16(%edx), %esi
 	movl	20(%edx), %edi
+	movl	%ecx, 0(%esp)
+	pushl $0
+	call _threadinswitch
+	popl %eax
 	xorl	%eax, %eax
 	incl	%eax
-	movl	%ecx, 0(%esp)
 	ret
 
 
-- 
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