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+/*
+ * 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