diff options
Diffstat (limited to 'arch/score/lib/string.S')
| -rw-r--r-- | arch/score/lib/string.S | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/arch/score/lib/string.S b/arch/score/lib/string.S new file mode 100644 index 00000000000..943d0911ea8 --- /dev/null +++ b/arch/score/lib/string.S @@ -0,0 +1,196 @@ +/* + * 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 + + .align 2 +ENTRY(__put_user_unknown) + .set volatile + ldi r4, -EFAULT + br r3 + + .align 2 +ENTRY(__get_user_unknown) + ldi r5, 0 + ldi r4, -EFAULT + br r3 |