mostly 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>


Index: src/devices/oprom/x86_asm.S
===================================================================
--- src/devices/oprom/x86_asm.S	(revision 5612)
+++ src/devices/oprom/x86_asm.S	(working copy)
@@ -82,10 +82,10 @@
 
 	/* 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 @@
 	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 @@
 	.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 @@
 	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 @@
 	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 @@
 	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 @@
 	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
 	 */
