Revision: 2214
http://svn.sv.gnu.org/viewvc/?view=rev&root=grub&revision=2214
Author: proski
Date: 2009-05-14 13:43:13 +0000 (Thu, 14 May 2009)
Log Message:
-----------
2009-05-14 Pavel Roskin <[email protected]>
* commands/i386/pc/drivemap_int13h.S: Eliminate unconditional
jump. This saves two bytes, so the typical case of 2 swapped
drives would fit 32 bytes.
Modified Paths:
--------------
trunk/grub2/ChangeLog
trunk/grub2/commands/i386/pc/drivemap_int13h.S
Modified: trunk/grub2/ChangeLog
===================================================================
--- trunk/grub2/ChangeLog 2009-05-14 03:59:10 UTC (rev 2213)
+++ trunk/grub2/ChangeLog 2009-05-14 13:43:13 UTC (rev 2214)
@@ -1,3 +1,9 @@
+2009-05-14 Pavel Roskin <[email protected]>
+
+ * commands/i386/pc/drivemap_int13h.S: Eliminate unconditional
+ jump. This saves two bytes, so the typical case of 2 swapped
+ drives would fit 32 bytes.
+
2009-05-13 Pavel Roskin <[email protected]>
* loader/i386/multiboot.c (grub_multiboot): Cast mmap_addr to
Modified: trunk/grub2/commands/i386/pc/drivemap_int13h.S
===================================================================
--- trunk/grub2/commands/i386/pc/drivemap_int13h.S 2009-05-14 03:59:10 UTC
(rev 2213)
+++ trunk/grub2/commands/i386/pc/drivemap_int13h.S 2009-05-14 13:43:13 UTC
(rev 2214)
@@ -37,15 +37,12 @@
movw %cs:(%bx), %ax
cmpb %ah, %al
jz not_found /* DRV=DST => map end - drive not remapped, keep DL.
*/
- cmpb %dl, %al
- jz found /* Found - drive remapped, modify DL. */
inc %bx
inc %bx
- jmp more_remaining /* Not found, but more remaining, loop. */
+ cmpb %dl, %al
+ jnz more_remaining /* Not found, but more remaining, loop. */
+ movb %ah, %dl /* Found - drive remapped, modify DL. */
-found:
- movb %ah, %dl
-
not_found:
pop %bx
pop %ax
