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linux-next/arch/arm/lib/io-readsw-armv4.S
Nicolas Pitre a9c4814d8d [ARM] 3151/1: make various assembly local labels actually local (io-*.S)
Patch from Nicolas Pitre

For assembly labels to actually be local they must start with ".L" and
not only "." otherwise they still remain visible in the final link and
clutter kallsyms needlessly, and possibly make for unclear symbolic
backtrace. This patch simply inserts a"L" where appropriate. The code
itself is unchanged.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-11 21:51:48 +00:00

131 lines
2.3 KiB
ArmAsm

/*
* linux/arch/arm/lib/io-readsw-armv4.S
*
* Copyright (C) 1995-2000 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
.macro pack, rd, hw1, hw2
#ifndef __ARMEB__
orr \rd, \hw1, \hw2, lsl #16
#else
orr \rd, \hw2, \hw1, lsl #16
#endif
.endm
.Linsw_align: movs ip, r1, lsl #31
bne .Linsw_noalign
ldrh ip, [r0]
sub r2, r2, #1
strh ip, [r1], #2
ENTRY(__raw_readsw)
teq r2, #0
moveq pc, lr
tst r1, #3
bne .Linsw_align
stmfd sp!, {r4, r5, lr}
subs r2, r2, #8
bmi .Lno_insw_8
.Linsw_8_lp: ldrh r3, [r0]
ldrh r4, [r0]
pack r3, r3, r4
ldrh r4, [r0]
ldrh r5, [r0]
pack r4, r4, r5
ldrh r5, [r0]
ldrh ip, [r0]
pack r5, r5, ip
ldrh ip, [r0]
ldrh lr, [r0]
pack ip, ip, lr
subs r2, r2, #8
stmia r1!, {r3 - r5, ip}
bpl .Linsw_8_lp
.Lno_insw_8: tst r2, #4
beq .Lno_insw_4
ldrh r3, [r0]
ldrh r4, [r0]
pack r3, r3, r4
ldrh r4, [r0]
ldrh ip, [r0]
pack r4, r4, ip
stmia r1!, {r3, r4}
.Lno_insw_4: movs r2, r2, lsl #31
bcc .Lno_insw_2
ldrh r3, [r0]
ldrh ip, [r0]
pack r3, r3, ip
str r3, [r1], #4
.Lno_insw_2: ldrneh r3, [r0]
strneh r3, [r1]
ldmfd sp!, {r4, r5, pc}
#ifdef __ARMEB__
#define _BE_ONLY_(code...) code
#define _LE_ONLY_(code...)
#define push_hbyte0 lsr #8
#define pull_hbyte1 lsl #24
#else
#define _BE_ONLY_(code...)
#define _LE_ONLY_(code...) code
#define push_hbyte0 lsl #24
#define pull_hbyte1 lsr #8
#endif
.Linsw_noalign: stmfd sp!, {r4, lr}
ldrccb ip, [r1, #-1]!
bcc 1f
ldrh ip, [r0]
sub r2, r2, #1
_BE_ONLY_( mov ip, ip, ror #8 )
strb ip, [r1], #1
_LE_ONLY_( mov ip, ip, lsr #8 )
_BE_ONLY_( mov ip, ip, lsr #24 )
1: subs r2, r2, #2
bmi 3f
_BE_ONLY_( mov ip, ip, lsl #24 )
2: ldrh r3, [r0]
ldrh r4, [r0]
subs r2, r2, #2
orr ip, ip, r3, lsl #8
orr ip, ip, r4, push_hbyte0
str ip, [r1], #4
mov ip, r4, pull_hbyte1
bpl 2b
_BE_ONLY_( mov ip, ip, lsr #24 )
3: tst r2, #1
strb ip, [r1], #1
ldrneh ip, [r0]
_BE_ONLY_( movne ip, ip, ror #8 )
strneb ip, [r1], #1
_LE_ONLY_( movne ip, ip, lsr #8 )
_BE_ONLY_( movne ip, ip, lsr #24 )
strneb ip, [r1]
ldmfd sp!, {r4, pc}