mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-24 20:13:39 +00:00
38de2bad64
Remove the extra (empty) argument passed to str8w, causing the following
error:
<instantiation>:40:47: error: too many positional arguments
str8w r0, r3, r4, r5, r6, r7, r8, r9, ip, , abort=19f
^
u-boot/arch/arm/lib/memcpy.S:240:5: note: while in macro instantiation
17: forward_copy_shift pull=16 push=16
^
Note: no functional change intended.
Fixes: d8834a1323 ("arm: Use optimized memcpy and memset from linux")
Signed-off-by: Pierre-Clément Tosi <ptosi@google.com>
264 lines
5.2 KiB
ArmAsm
264 lines
5.2 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* linux/arch/arm/lib/memcpy.S
|
|
*
|
|
* Author: Nicolas Pitre
|
|
* Created: Sep 28, 2005
|
|
* Copyright: MontaVista Software, Inc.
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
#include <asm/assembler.h>
|
|
|
|
#define LDR1W_SHIFT 0
|
|
#define STR1W_SHIFT 0
|
|
|
|
.macro ldr1w ptr reg abort
|
|
W(ldr) \reg, [\ptr], #4
|
|
.endm
|
|
|
|
.macro ldr4w ptr reg1 reg2 reg3 reg4 abort
|
|
ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4}
|
|
.endm
|
|
|
|
.macro ldr8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort
|
|
ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8}
|
|
.endm
|
|
|
|
.macro ldr1b ptr reg cond=al abort
|
|
ldrb\cond\() \reg, [\ptr], #1
|
|
.endm
|
|
|
|
.macro str1w ptr reg abort
|
|
W(str) \reg, [\ptr], #4
|
|
.endm
|
|
|
|
.macro str8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort
|
|
stmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8}
|
|
.endm
|
|
|
|
.macro str1b ptr reg cond=al abort
|
|
strb\cond\() \reg, [\ptr], #1
|
|
.endm
|
|
|
|
.macro enter reg1 reg2
|
|
stmdb sp!, {r0, \reg1, \reg2}
|
|
.endm
|
|
|
|
.macro exit reg1 reg2
|
|
ldmfd sp!, {r0, \reg1, \reg2}
|
|
.endm
|
|
|
|
.text
|
|
|
|
/* Prototype: void *memcpy(void *dest, const void *src, size_t n); */
|
|
.syntax unified
|
|
#if CONFIG_IS_ENABLED(SYS_THUMB_BUILD) && !defined(MEMCPY_NO_THUMB_BUILD)
|
|
.thumb
|
|
.thumb_func
|
|
#endif
|
|
ENTRY(memcpy)
|
|
cmp r0, r1
|
|
bxeq lr
|
|
|
|
enter r4, lr
|
|
|
|
subs r2, r2, #4
|
|
blt 8f
|
|
ands ip, r0, #3
|
|
PLD( pld [r1, #0] )
|
|
bne 9f
|
|
ands ip, r1, #3
|
|
bne 10f
|
|
|
|
1: subs r2, r2, #(28)
|
|
stmfd sp!, {r5 - r8}
|
|
blt 5f
|
|
|
|
CALGN( ands ip, r0, #31 )
|
|
CALGN( rsb r3, ip, #32 )
|
|
CALGN( sbcsne r4, r3, r2 ) @ C is always set here
|
|
CALGN( bcs 2f )
|
|
CALGN( adr r4, 6f )
|
|
CALGN( subs r2, r2, r3 ) @ C gets set
|
|
CALGN( add pc, r4, ip )
|
|
|
|
PLD( pld [r1, #0] )
|
|
2: PLD( subs r2, r2, #96 )
|
|
PLD( pld [r1, #28] )
|
|
PLD( blt 4f )
|
|
PLD( pld [r1, #60] )
|
|
PLD( pld [r1, #92] )
|
|
|
|
3: PLD( pld [r1, #124] )
|
|
4: ldr8w r1, r3, r4, r5, r6, r7, r8, ip, lr, abort=20f
|
|
subs r2, r2, #32
|
|
str8w r0, r3, r4, r5, r6, r7, r8, ip, lr, abort=20f
|
|
bge 3b
|
|
PLD( cmn r2, #96 )
|
|
PLD( bge 4b )
|
|
|
|
5: ands ip, r2, #28
|
|
rsb ip, ip, #32
|
|
#if LDR1W_SHIFT > 0
|
|
lsl ip, ip, #LDR1W_SHIFT
|
|
#endif
|
|
addne pc, pc, ip @ C is always clear here
|
|
b 7f
|
|
6:
|
|
.rept (1 << LDR1W_SHIFT)
|
|
W(nop)
|
|
.endr
|
|
ldr1w r1, r3, abort=20f
|
|
ldr1w r1, r4, abort=20f
|
|
ldr1w r1, r5, abort=20f
|
|
ldr1w r1, r6, abort=20f
|
|
ldr1w r1, r7, abort=20f
|
|
ldr1w r1, r8, abort=20f
|
|
ldr1w r1, lr, abort=20f
|
|
|
|
#if LDR1W_SHIFT < STR1W_SHIFT
|
|
lsl ip, ip, #STR1W_SHIFT - LDR1W_SHIFT
|
|
#elif LDR1W_SHIFT > STR1W_SHIFT
|
|
lsr ip, ip, #LDR1W_SHIFT - STR1W_SHIFT
|
|
#endif
|
|
add pc, pc, ip
|
|
nop
|
|
.rept (1 << STR1W_SHIFT)
|
|
W(nop)
|
|
.endr
|
|
str1w r0, r3, abort=20f
|
|
str1w r0, r4, abort=20f
|
|
str1w r0, r5, abort=20f
|
|
str1w r0, r6, abort=20f
|
|
str1w r0, r7, abort=20f
|
|
str1w r0, r8, abort=20f
|
|
str1w r0, lr, abort=20f
|
|
|
|
CALGN( bcs 2b )
|
|
|
|
7: ldmfd sp!, {r5 - r8}
|
|
|
|
8: movs r2, r2, lsl #31
|
|
ldr1b r1, r3, ne, abort=21f
|
|
ldr1b r1, r4, cs, abort=21f
|
|
ldr1b r1, ip, cs, abort=21f
|
|
str1b r0, r3, ne, abort=21f
|
|
str1b r0, r4, cs, abort=21f
|
|
str1b r0, ip, cs, abort=21f
|
|
|
|
exit r4, lr
|
|
bx lr
|
|
|
|
9: rsb ip, ip, #4
|
|
cmp ip, #2
|
|
ldr1b r1, r3, gt, abort=21f
|
|
ldr1b r1, r4, ge, abort=21f
|
|
ldr1b r1, lr, abort=21f
|
|
str1b r0, r3, gt, abort=21f
|
|
str1b r0, r4, ge, abort=21f
|
|
subs r2, r2, ip
|
|
str1b r0, lr, abort=21f
|
|
blt 8b
|
|
ands ip, r1, #3
|
|
beq 1b
|
|
|
|
10: bic r1, r1, #3
|
|
cmp ip, #2
|
|
ldr1w r1, lr, abort=21f
|
|
beq 17f
|
|
bgt 18f
|
|
|
|
|
|
.macro forward_copy_shift pull push
|
|
|
|
subs r2, r2, #28
|
|
blt 14f
|
|
|
|
CALGN( ands ip, r0, #31 )
|
|
CALGN( rsb ip, ip, #32 )
|
|
CALGN( sbcsne r4, ip, r2 ) @ C is always set here
|
|
CALGN( subcc r2, r2, ip )
|
|
CALGN( bcc 15f )
|
|
|
|
11: stmfd sp!, {r5 - r9}
|
|
|
|
PLD( pld [r1, #0] )
|
|
PLD( subs r2, r2, #96 )
|
|
PLD( pld [r1, #28] )
|
|
PLD( blt 13f )
|
|
PLD( pld [r1, #60] )
|
|
PLD( pld [r1, #92] )
|
|
|
|
12: PLD( pld [r1, #124] )
|
|
13: ldr4w r1, r4, r5, r6, r7, abort=19f
|
|
mov r3, lr, lspull #\pull
|
|
subs r2, r2, #32
|
|
ldr4w r1, r8, r9, ip, lr, abort=19f
|
|
orr r3, r3, r4, lspush #\push
|
|
mov r4, r4, lspull #\pull
|
|
orr r4, r4, r5, lspush #\push
|
|
mov r5, r5, lspull #\pull
|
|
orr r5, r5, r6, lspush #\push
|
|
mov r6, r6, lspull #\pull
|
|
orr r6, r6, r7, lspush #\push
|
|
mov r7, r7, lspull #\pull
|
|
orr r7, r7, r8, lspush #\push
|
|
mov r8, r8, lspull #\pull
|
|
orr r8, r8, r9, lspush #\push
|
|
mov r9, r9, lspull #\pull
|
|
orr r9, r9, ip, lspush #\push
|
|
mov ip, ip, lspull #\pull
|
|
orr ip, ip, lr, lspush #\push
|
|
str8w r0, r3, r4, r5, r6, r7, r8, r9, ip, abort=19f
|
|
bge 12b
|
|
PLD( cmn r2, #96 )
|
|
PLD( bge 13b )
|
|
|
|
ldmfd sp!, {r5 - r9}
|
|
|
|
14: ands ip, r2, #28
|
|
beq 16f
|
|
|
|
15: mov r3, lr, lspull #\pull
|
|
ldr1w r1, lr, abort=21f
|
|
subs ip, ip, #4
|
|
orr r3, r3, lr, lspush #\push
|
|
str1w r0, r3, abort=21f
|
|
bgt 15b
|
|
CALGN( cmp r2, #0 )
|
|
CALGN( bge 11b )
|
|
|
|
16: sub r1, r1, #(\push / 8)
|
|
b 8b
|
|
|
|
.endm
|
|
|
|
|
|
forward_copy_shift pull=8 push=24
|
|
|
|
17: forward_copy_shift pull=16 push=16
|
|
|
|
18: forward_copy_shift pull=24 push=8
|
|
|
|
|
|
/*
|
|
* Abort preamble and completion macros.
|
|
* If a fixup handler is required then those macros must surround it.
|
|
* It is assumed that the fixup code will handle the private part of
|
|
* the exit macro.
|
|
*/
|
|
|
|
.macro copy_abort_preamble
|
|
19: ldmfd sp!, {r5 - r9}
|
|
b 21f
|
|
20: ldmfd sp!, {r5 - r8}
|
|
21:
|
|
.endm
|
|
|
|
.macro copy_abort_end
|
|
ldmfd sp!, {r4, lr}
|
|
bx lr
|
|
.endm
|
|
|
|
ENDPROC(memcpy)
|