Rev 1408 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1627 | serge | 1 | /* memcpy() Author: Kees J. Bot */ |
| 2 | /* 2 Jan 1994 */ |
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| 1408 | serge | 3 | |
| 1627 | serge | 4 | /* void *memcpy(void *s1, const void *s2, size_t n) */ |
| 5 | /* Copy a chunk of memory. */ |
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| 6 | /* This routine need not handle overlap, so it does not handle overlap. */ |
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| 7 | /* One could simply call __memmove, the cost of the overlap check is */ |
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| 8 | /* negligible, but you are dealing with a programmer who believes that if */ |
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| 9 | /* anything can go wrong, it should go wrong. */ |
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| 10 | /* */ |
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| 11 | #include "asm.h" |
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| 1408 | serge | 12 | |
| 1627 | serge | 13 | ENTRY(memcpy) |
| 14 | push %ebp |
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| 15 | movl %esp, %ebp |
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| 16 | push %esi |
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| 17 | push %edi |
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| 18 | movl 8(%ebp), %edi /* String s1 */ |
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| 19 | movl 12(%ebp), %esi /* String s2 */ |
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| 20 | movl 16(%ebp), %ecx /* Length */ |
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| 21 | /* No overlap check here */ |
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| 22 | jmp _C_LABEL(_memcpy) /* Call the part of __memmove that copies up */ |