123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184 |
- /*
- * 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"
- 99:
- br r3
- .previous
- .section __ex_table, "a"
- .align 2
- .word 0b, 99b
- .previous
|