Commit 68643cfb authored by Olaf Hering's avatar Olaf Hering Committed by Paul Mackerras
Browse files

[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: default avatarOlaf Hering <olh@suse.de>

 arch/powerpc/boot/crt0.S |   23 +++++++++++------------
 1 files changed, 11 insertions(+), 12 deletions(-)
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent d2a33170

arch/powerpc/boot/crt0.S

+11 −12
Original line number Diff line number Diff line
@@ -14,43 +14,42 @@ 
	.text

	.globl	_zimage_start

_zimage_start:

	bl	reloc_offset

	bl	1f



reloc_offset:

1:

	mflr	r0

	lis	r9,reloc_offset@ha

	addi	r9,r9,reloc_offset@l

	lis	r9,1b@ha

	addi	r9,r9,1b@l

	subf.	r0,r9,r0

	beq	clear_caches

	beq	3f



reloc_got2:

	lis	r9,__got2_start@ha

	addi	r9,r9,__got2_start@l

	lis	r8,__got2_end@ha

	addi	r8,r8,__got2_end@l

	subf.	r8,r9,r8

	beq	clear_caches

	beq	3f

	srwi.	r8,r8,2

	mtctr	r8

	add	r9,r0,r9

reloc_got2_loop:

2:

	lwz	r8,0(r9)

	add	r8,r8,r0

	stw	r8,0(r9)

	addi	r9,r9,4

	bdnz	reloc_got2_loop

	bdnz	2b



clear_caches:

3:

	lis	r9,_start@h

	add	r9,r0,r9

	lis	r8,_etext@ha

	addi	r8,r8,_etext@l

	add	r8,r0,r8

1:	dcbf	r0,r9

4:	dcbf	r0,r9

	icbi	r0,r9

	addi	r9,r9,0x20

	cmplwi	0,r9,8

	blt	1b

	blt	4b

	sync

	isync

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