git: cfdc649e455b - main - i386 doreti: Fix calculation of stack frame size

From: Tijl Coosemans <tijl_at_FreeBSD.org>
Date: Fri, 02 Sep 2022 14:43:50 UTC 
The branch main has been updated by tijl:

URL: https://cgit.FreeBSD.org/src/commit/?id=cfdc649e455bc0d37d42c46b59360462e93b4300

commit cfdc649e455bc0d37d42c46b59360462e93b4300
Author:     Tijl Coosemans <tijl@FreeBSD.org>
AuthorDate: 2022-09-02 14:16:35 +0000
Commit:     Tijl Coosemans <tijl@FreeBSD.org>
CommitDate: 2022-09-02 14:41:52 +0000

    i386 doreti: Fix calculation of stack frame size
    
    Reviewed by:    kib
    Fixes:          e8b2980e4a12 - i386 doreti: stop saving/restoring %ecx
---
 sys/i386/i386/exception.s | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/i386/i386/exception.s b/sys/i386/i386/exception.s
index 2373fa425210..ab6c83843bfe 100644
--- a/sys/i386/i386/exception.s
+++ b/sys/i386/i386/exception.s
@@ -530,7 +530,7 @@ doreti_exit:
 	testl	$PSL_VM,TF_EFLAGS(%esp)
 	jz	2f			/* PCB_VM86CALL is not set */
 	addl	$VM86_STACK_SPACE, %ecx
-2:	subl	$TF_SZ, %edx
+2:	subl	%ecx, %edx
 	movl	%edx, %edi
 	rep; movsb
 	movl	%edx, %esp