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SPACE - Library 1 - Volume 1.iso
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dlibs12
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memset.s
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1990-11-23
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579b
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30 lines
* char *memset(dest, data, len)
* register char *dest;
* register char data;
* register unsigned int len;
* /*
* * Fill <dest> will <len> bytes of <data>. A pointer to <dest>
* * is returned.
* */
* {
* register char *p = dest;
*
* while(len--)
* *dest++ = data;
* return(p);
* }
.text
.globl _memset
_memset:
move.l 4(a7),a0 * destination
move.w 8(a7),d0 * fill data
move.w 10(a7),d1 * number of bytes
bra memset2
memset1:
move.b d0,(a0)+ * fill loop
memset2:
dbra d1,memset1
move.l 4(a7),d0 * return destination pointer
rts