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authorStefan Reinauer <stepan@coresystems.de>2010-06-05 09:52:37 +0000
committerStefan Reinauer <stepan@openbios.org>2010-06-05 09:52:37 +0000
commit1946284594199accc9fb5733c1fad32bd6e6745e (patch)
tree4ea2b962f2eb40f93dc0c0185265cede9240d734 /src/devices
parent0c47c4d02d55eb8b7c0f467dbf2971e7a1d870e0 (diff)
downloadcoreboot-1946284594199accc9fb5733c1fad32bd6e6745e.tar.xz
tly cosmetical. don't use movw because we use mov in most places.
Also, drop some dead code at the very end where some segment registers get set up and are immediately overwritten by pops. Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Nils Jacobs <njacobs8@hetnet.nl> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5613 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/devices')
-rw-r--r--src/devices/oprom/x86_asm.S23
1 files changed, 8 insertions, 15 deletions
diff --git a/src/devices/oprom/x86_asm.S b/src/devices/oprom/x86_asm.S
index e355da8fb9..d5b5e1859f 100644
--- a/src/devices/oprom/x86_asm.S
+++ b/src/devices/oprom/x86_asm.S
@@ -82,10 +82,10 @@ __realmode_call = RELOCATED(.)
/* entry point */
movl 36(%ebp), %eax
- movw %ax, __lcall_instr + 1
+ mov %ax, __lcall_instr + 1
andl $0xffff0000, %eax
shrl $4, %eax
- movw %ax, __lcall_instr + 3
+ mov %ax, __lcall_instr + 3
/* initial register values */
movl 40(%ebp), %eax
@@ -147,7 +147,7 @@ __realmode_call = RELOCATED(.)
movl __registers + 8, %ecx
movl __registers + 12, %edx
movl __registers + 16, %esi
- movl __registers + 20, %edi
+ movl __registers + 20, %edi
/* Set all segments to 0x0000, ds to 0x0040 */
push %ax
@@ -165,8 +165,8 @@ __lcall_instr = RELOCATED(.)
.word 0x0000, 0x0000
/* ************************************ */
- /* If we got here, just about done.
- * Need to get back to protected mode
+ /* If we got here, we are just about done.
+ * Need to get back to protected mode.
*/
movl %cr0, %eax
orl $PE, %eax
@@ -178,7 +178,7 @@ __lcall_instr = RELOCATED(.)
data32 ljmp $0x10, $RELOCATED(1f)
1:
.code32
- movw $0x18, %ax
+ mov $0x18, %ax
mov %ax, %ds
mov %ax, %es
mov %ax, %fs
@@ -294,7 +294,7 @@ __intXX_instr = RELOCATED(.)
data32 ljmp $0x10, $RELOCATED(1f)
1:
.code32
- movw $0x18, %ax
+ mov $0x18, %ax
mov %ax, %ds
mov %ax, %es
mov %ax, %fs
@@ -337,7 +337,7 @@ __interrupt_handler_16bit = RELOCATED(.)
data32 ljmp $0x10, $RELOCATED(1f)
1:
.code32
- movw $0x18, %ax
+ mov $0x18, %ax
mov %ax, %ds
mov %ax, %es
mov %ax, %fs
@@ -382,13 +382,6 @@ __interrupt_handler_16bit = RELOCATED(.)
mov %ax, %ds
lidt __realmode_idt
- /* Set up segment registers to segment 0x0000 and ds to 0x040 */
- mov %ax, %es
- mov %ax, %fs
- mov %ax, %gs
- mov $0x40, %ax
- mov %ax, %ds
-
/* Restore all registers, including those
* manipulated by the C handler
*/