leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

[PATCH] ppc boot: replace string labels with numbers

Browse Source 
Replacing the string labels with numbers saves 117 bytes in the final zImage.
These local labels are not discared.

Signed-off-by: Olaf Hering <olh@suse.de>

 arch/powerpc/boot/crt0.S |   23 +++++++++++------------
 1 files changed, 11 insertions(+), 12 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Olaf Hering 2005-11-17 22:09:02 +01:00 committed by Paul Mackerras
parent d2a3317097
commit 68643cfb87
1 changed files with 11 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
arch/powerpc/boot/crt0.S
View File

@ -14,43 +14,42 @@
.text .text
.globl _zimage_start .globl _zimage_start
_zimage_start: _zimage_start:
bl reloc_offset bl 1f
reloc_offset: 1:
mflr r0 mflr r0
lis r9,reloc_offset@ha lis r9,1b@ha
addi r9,r9,reloc_offset@l addi r9,r9,1b@l
subf. r0,r9,r0 subf. r0,r9,r0
beq clear_caches beq 3f
reloc_got2:
lis r9,__got2_start@ha lis r9,__got2_start@ha
addi r9,r9,__got2_start@l addi r9,r9,__got2_start@l
lis r8,__got2_end@ha lis r8,__got2_end@ha
addi r8,r8,__got2_end@l addi r8,r8,__got2_end@l
subf. r8,r9,r8 subf. r8,r9,r8
beq clear_caches beq 3f
srwi. r8,r8,2 srwi. r8,r8,2
mtctr r8 mtctr r8
add r9,r0,r9 add r9,r0,r9
reloc_got2_loop: 2:
lwz r8,0(r9) lwz r8,0(r9)
add r8,r8,r0 add r8,r8,r0
stw r8,0(r9) stw r8,0(r9)
addi r9,r9,4 addi r9,r9,4
bdnz reloc_got2_loop bdnz 2b
clear_caches: 3:
lis r9,_start@h lis r9,_start@h
add r9,r0,r9 add r9,r0,r9
lis r8,_etext@ha lis r8,_etext@ha
addi r8,r8,_etext@l addi r8,r8,_etext@l
add r8,r0,r8 add r8,r0,r8
1: dcbf r0,r9 4: dcbf r0,r9
icbi r0,r9 icbi r0,r9
addi r9,r9,0x20 addi r9,r9,0x20
cmplwi 0,r9,8 cmplwi 0,r9,8
blt 1b blt 4b
sync sync
isync isync