185 lines
2.8 KiB
ArmAsm
185 lines
2.8 KiB
ArmAsm
|
/*
|
||
|
|
* arch/score/lib/string.S
|
||
|
|
*
|
||
|
|
* Score Processor version.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
|
||
|
|
* Chen Liqin <liqin.chen@sunplusct.com>
|
||
|
|
* Lennox Wu <lennox.wu@sunplusct.com>
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, see the file COPYING, or write
|
||
|
|
* to the Free Software Foundation, Inc.,
|
||
|
|
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/linkage.h>
|
||
|
|
#include <asm-generic/errno.h>
|
||
|
|
|
||
|
|
.text
|
||
|
|
.align 2
|
||
|
|
ENTRY(__strncpy_from_user)
|
||
|
|
cmpi.c r6, 0
|
||
|
|
mv r9, r6
|
||
|
|
ble .L2
|
||
|
|
0: lbu r7, [r5]
|
||
|
|
ldi r8, 0
|
||
|
|
1: sb r7, [r4]
|
||
|
|
2: lb r6, [r5]
|
||
|
|
cmp.c r6, r8
|
||
|
|
beq .L2
|
||
|
|
|
||
|
|
.L5:
|
||
|
|
addi r8, 1
|
||
|
|
cmp.c r8, r9
|
||
|
|
beq .L7
|
||
|
|
3: lbu r6, [r5, 1]+
|
||
|
|
4: sb r6, [r4, 1]+
|
||
|
|
5: lb r7, [r5]
|
||
|
|
cmpi.c r7, 0
|
||
|
|
bne .L5
|
||
|
|
.L7:
|
||
|
|
mv r4, r8
|
||
|
|
br r3
|
||
|
|
.L2:
|
||
|
|
ldi r8, 0
|
||
|
|
mv r4, r8
|
||
|
|
br r3
|
||
|
|
.section .fixup, "ax"
|
||
|
|
99:
|
||
|
|
ldi r4, -EFAULT
|
||
|
|
br r3
|
||
|
|
.previous
|
||
|
|
.section __ex_table, "a"
|
||
|
|
.align 2
|
||
|
|
.word 0b ,99b
|
||
|
|
.word 1b ,99b
|
||
|
|
.word 2b ,99b
|
||
|
|
.word 3b ,99b
|
||
|
|
.word 4b ,99b
|
||
|
|
.word 5b ,99b
|
||
|
|
.previous
|
||
|
|
|
||
|
|
.align 2
|
||
|
|
ENTRY(__strnlen_user)
|
||
|
|
cmpi.c r5, 0
|
||
|
|
ble .L11
|
||
|
|
0: lb r6, [r4]
|
||
|
|
ldi r7, 0
|
||
|
|
cmp.c r6, r7
|
||
|
|
beq .L11
|
||
|
|
.L15:
|
||
|
|
addi r7, 1
|
||
|
|
cmp.c r7, r5
|
||
|
|
beq .L23
|
||
|
|
1: lb r6, [r4,1]+
|
||
|
|
cmpi.c r6, 0
|
||
|
|
bne .L15
|
||
|
|
.L23:
|
||
|
|
addri r4, r7, 1
|
||
|
|
br r3
|
||
|
|
|
||
|
|
.L11:
|
||
|
|
ldi r4, 1
|
||
|
|
br r3
|
||
|
|
.section .fixup, "ax"
|
||
|
|
99:
|
||
|
|
ldi r4, 0
|
||
|
|
br r3
|
||
|
|
|
||
|
|
.section __ex_table,"a"
|
||
|
|
.align 2
|
||
|
|
.word 0b, 99b
|
||
|
|
.word 1b, 99b
|
||
|
|
.previous
|
||
|
|
|
||
|
|
.align 2
|
||
|
|
ENTRY(__strlen_user)
|
||
|
|
0: lb r6, [r4]
|
||
|
|
mv r7, r4
|
||
|
|
extsb r6, r6
|
||
|
|
cmpi.c r6, 0
|
||
|
|
mv r4, r6
|
||
|
|
beq .L27
|
||
|
|
.L28:
|
||
|
|
1: lb r6, [r7, 1]+
|
||
|
|
addi r6, 1
|
||
|
|
cmpi.c r6, 0
|
||
|
|
bne .L28
|
||
|
|
.L27:
|
||
|
|
br r3
|
||
|
|
.section .fixup, "ax"
|
||
|
|
ldi r4, 0x0
|
||
|
|
br r3
|
||
|
|
99:
|
||
|
|
ldi r4, 0
|
||
|
|
br r3
|
||
|
|
.previous
|
||
|
|
.section __ex_table, "a"
|
||
|
|
.align 2
|
||
|
|
.word 0b ,99b
|
||
|
|
.word 1b ,99b
|
||
|
|
.previous
|
||
|
|
|
||
|
|
.align 2
|
||
|
|
ENTRY(__copy_tofrom_user)
|
||
|
|
cmpi.c r6, 0
|
||
|
|
mv r10,r6
|
||
|
|
beq .L32
|
||
|
|
ldi r9, 0
|
||
|
|
.L34:
|
||
|
|
add r6, r5, r9
|
||
|
|
0: lbu r8, [r6]
|
||
|
|
add r7, r4, r9
|
||
|
|
1: sb r8, [r7]
|
||
|
|
addi r9, 1
|
||
|
|
cmp.c r9, r10
|
||
|
|
bne .L34
|
||
|
|
.L32:
|
||
|
|
ldi r4, 0
|
||
|
|
br r3
|
||
|
|
.section .fixup, "ax"
|
||
|
|
99:
|
||
|
|
sub r4, r10, r9
|
||
|
|
br r3
|
||
|
|
.previous
|
||
|
|
.section __ex_table, "a"
|
||
|
|
.align 2
|
||
|
|
.word 0b, 99b
|
||
|
|
.word 1b, 99b
|
||
|
|
.previous
|
||
|
|
|
||
|
|
.align 2
|
||
|
|
ENTRY(__clear_user)
|
||
|
|
cmpi.c r5, 0
|
||
|
|
beq .L38
|
||
|
|
ldi r6, 0
|
||
|
|
mv r7, r6
|
||
|
|
.L40:
|
||
|
|
addi r6, 1
|
||
|
|
0: sb r7, [r4]+, 1
|
||
|
|
cmp.c r6, r5
|
||
|
|
bne .L40
|
||
|
|
.L38:
|
||
|
|
ldi r4, 0
|
||
|
|
br r3
|
||
|
|
|
||
|
|
.section .fixup, "ax"
|
||
|
|
br r3
|
||
|
|
.previous
|
||
|
|
.section __ex_table, "a"
|
||
|
|
.align 2
|
||
|
|
99:
|
||
|
|
.word 0b, 99b
|
||
|
|
.previous
|