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