memset.c

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/*
 *  The contents of this file are subject to the Mozilla Public License
 *  Version 1.0 (the "License"); you may not use this file except in
 *  compliance with the License. You may obtain a copy of the License at
 *  http://www.mozilla.org/MPL/
 *
 *  Software distributed under the License is distributed on an "AS IS"
 *  basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 *  License for the specific language governing rights and limitations
 *  under the License.
 *
 *  The Original Code is legOS code, released October 17, 1999.
 *
 *  The Initial Developer of the Original Code is Markus L. Noga.
 *  Portions created by Markus L. Noga are Copyright (C) 1999
 *  Markus L. Noga. All Rights Reserved.
 *
 *  Contributor(s): Markus L. Noga <markus@noga.de>
 */

typedef unsigned        size_t;                 // data type for memory sizes


//
// Functions
//


void *memset(void* s,int c,size_t n) {
        void *res;
__asm__ __volatile__(
        "  add.w %1,%0\n"
        "0:cmp.w %1,%0\n"
        "  beq 1f\n"
        "  mov.b %2l,@-%0\n"
        "  bra 0b\n"
        "1:"
        : "=&r" (res)                           // output
        : "r" (s), "r" (c), "0" (n)             // input
        : "cc","memory"                         // clobbered (final)
        );
        return res;                                     
}

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