[coreboot-gerrit] Change in coreboot[master]: smm: Switch from %edx to %ebx

[Raul Rangel (Code Review)]

Raul Rangel has uploaded this change for review. ( https://review.coreboot.org/27228


Change subject: smm: Switch from %edx to %ebx
......................................................................

smm: Switch from %edx to %ebx

%edx gets clobbered before the c handler is invoked. This is just a
cleanup cl to make the next cl look clean.

BUG=b:80539294
TEST=verified SMI still works on grunt.

Change-Id: I21bf41ed4fdeaaa8737c883f202a39cb57c2b517
Signed-off-by: Raul E Rangel <rrangel at chromium.org>
---
M src/cpu/x86/smm/smm_stub.S
1 file changed, 3 insertions(+), 3 deletions(-)



  git pull ssh://review.coreboot.org:29418/coreboot refs/changes/28/27228/1

diff --git a/src/cpu/x86/smm/smm_stub.S b/src/cpu/x86/smm/smm_stub.S
index 3fea32c..060361b 100644
--- a/src/cpu/x86/smm/smm_stub.S
+++ b/src/cpu/x86/smm/smm_stub.S
@@ -132,9 +132,9 @@
 1:
 	movl	stack_size, %eax
 	mul	%ecx # %eax(stack_size) * %ecx(cpu) = %eax(offset)
-	movl	stack_top, %edx
-	subl	%eax, %edx # %edx(stack_top) - %eax(offset) = %edx(stack_top)
-	mov	%edx, %esp
+	movl	stack_top, %ebx
+	subl	%eax, %ebx # %ebx(stack_top) - %eax(offset) = %ebx(stack_top)
+	mov	%ebx, %esp
 
 	pushl	$0x0 # push a NULL stack base pointer
 	mov	%esp, %ebp

-- 
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Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I21bf41ed4fdeaaa8737c883f202a39cb57c2b517
Gerrit-Change-Number: 27228
Gerrit-PatchSet: 1
Gerrit-Owner: Raul Rangel <rrangel at chromium.org>
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