6bc9a3966f
This is the complete set of new arch Score's files for linux. Score instruction set support 16bits, 32bits and 64bits instruction, Score SOC had been used in game machine and LCD TV. Signed-off-by: Chen Liqin <liqin.chen@sunplusct.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
197 lines
2.9 KiB
ArmAsm
197 lines
2.9 KiB
ArmAsm
/*
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* arch/score/lib/string.S
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*
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* Score Processor version.
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*
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* Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
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* Chen Liqin <liqin.chen@sunplusct.com>
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* Lennox Wu <lennox.wu@sunplusct.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see the file COPYING, or write
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* to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <linux/linkage.h>
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#include <asm-generic/errno.h>
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.text
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.align 2
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ENTRY(__strncpy_from_user)
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cmpi.c r6, 0
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mv r9, r6
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ble .L2
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0: lbu r7, [r5]
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ldi r8, 0
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1: sb r7, [r4]
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2: lb r6, [r5]
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cmp.c r6, r8
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beq .L2
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.L5:
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addi r8, 1
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cmp.c r8, r9
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beq .L7
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3: lbu r6, [r5, 1]+
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4: sb r6, [r4, 1]+
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5: lb r7, [r5]
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cmpi.c r7, 0
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bne .L5
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.L7:
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mv r4, r8
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br r3
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.L2:
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ldi r8, 0
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mv r4, r8
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br r3
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.section .fixup, "ax"
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99:
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ldi r4, -EFAULT
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br r3
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.previous
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.section __ex_table, "a"
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.align 2
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.word 0b ,99b
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.word 1b ,99b
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.word 2b ,99b
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.word 3b ,99b
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.word 4b ,99b
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.word 5b ,99b
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.previous
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.align 2
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ENTRY(__strnlen_user)
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cmpi.c r5, 0
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ble .L11
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0: lb r6, [r4]
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ldi r7, 0
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cmp.c r6, r7
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beq .L11
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.L15:
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addi r7, 1
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cmp.c r7, r5
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beq .L23
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1: lb r6, [r4,1]+
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cmpi.c r6, 0
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bne .L15
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.L23:
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addri r4, r7, 1
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br r3
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.L11:
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ldi r4, 1
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br r3
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.section .fixup, "ax"
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99:
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ldi r4, 0
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br r3
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.section __ex_table,"a"
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.align 2
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.word 0b, 99b
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.word 1b, 99b
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.previous
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.align 2
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ENTRY(__strlen_user)
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0: lb r6, [r4]
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mv r7, r4
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extsb r6, r6
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cmpi.c r6, 0
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mv r4, r6
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beq .L27
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.L28:
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1: lb r6, [r7, 1]+
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addi r6, 1
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cmpi.c r6, 0
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bne .L28
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.L27:
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br r3
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.section .fixup, "ax"
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ldi r4, 0x0
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br r3
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99:
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ldi r4, 0
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br r3
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.previous
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.section __ex_table, "a"
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.align 2
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.word 0b ,99b
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.word 1b ,99b
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.previous
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.align 2
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ENTRY(__copy_tofrom_user)
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cmpi.c r6, 0
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mv r10,r6
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beq .L32
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ldi r9, 0
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.L34:
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add r6, r5, r9
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0: lbu r8, [r6]
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add r7, r4, r9
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1: sb r8, [r7]
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addi r9, 1
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cmp.c r9, r10
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bne .L34
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.L32:
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ldi r4, 0
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br r3
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.section .fixup, "ax"
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99:
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sub r4, r10, r9
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br r3
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.previous
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.section __ex_table, "a"
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.align 2
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.word 0b, 99b
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.word 1b, 99b
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.previous
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.align 2
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ENTRY(__clear_user)
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cmpi.c r5, 0
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beq .L38
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ldi r6, 0
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mv r7, r6
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.L40:
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addi r6, 1
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0: sb r7, [r4]+, 1
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cmp.c r6, r5
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bne .L40
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.L38:
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ldi r4, 0
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br r3
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.section .fixup, "ax"
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br r3
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.previous
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.section __ex_table, "a"
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.align 2
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99:
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.word 0b, 99b
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.previous
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.align 2
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ENTRY(__put_user_unknown)
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.set volatile
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ldi r4, -EFAULT
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br r3
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.align 2
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ENTRY(__get_user_unknown)
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ldi r5, 0
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ldi r4, -EFAULT
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br r3
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