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 000000000000..943d0911ea89
--- /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