a9c4814d8d
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>
130 lines
2.3 KiB
ArmAsm
130 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}
|