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/* Copyright (C) 1998 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Philip Blundell <philb@gnu.org>

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <sys/syscall.h>

                .text
                .global memset;
                .type memset,%function
                .align 4;                                                               \

memset:
        mov     a4, a1
        cmp     a3, $8          @ at least 8 bytes to do?
        blt     2f
        orr     a2, a2, a2, lsl $8
        orr     a2, a2, a2, lsl $16
1:
        tst     a4, $3          @ aligned yet?
        strneb  a2, [a4], $1
        subne   a3, a3, $1
        bne     1b
        mov     ip, a2
1:
        cmp     a3, $8          @ 8 bytes still to do?
        blt     2f
        stmia   a4!, {a2, ip}
        sub     a3, a3, $8
        cmp     a3, $8          @ 8 bytes still to do?
        blt     2f
        stmia   a4!, {a2, ip}
        sub     a3, a3, $8
        cmp     a3, $8          @ 8 bytes still to do?
        blt     2f
        stmia   a4!, {a2, ip}
        sub     a3, a3, $8
        cmp     a3, $8          @ 8 bytes still to do?
        stmgeia a4!, {a2, ip}
        subge   a3, a3, $8
        bge     1b
2:
        movs    a3, a3          @ anything left?
        moveq   pc, lr          @ nope
        rsb     a3, a3, $7
        add     pc, pc, a3, lsl $2
        mov     r0, r0
        strb    a2, [a4], $1
        strb    a2, [a4], $1
        strb    a2, [a4], $1
        strb    a2, [a4], $1
        strb    a2, [a4], $1
        strb    a2, [a4], $1
        strb    a2, [a4], $1
        mov     pc, lr

.size memset,.-memset;