Rev 1408 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1627 | serge | 1 | /* _strncpy() Author: Kees J. Bot */ |
| 2 | /* 1 Jan 1994 */ |
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| 1408 | serge | 3 | |
| 1627 | serge | 4 | /* char *_strncpy(char *s1, const char *s2, size_t ecx) */ |
| 5 | /* Copy string s2 to s1. */ |
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| 6 | /* */ |
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| 7 | #include "asm.h" |
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| 1408 | serge | 8 | |
| 1627 | serge | 9 | ENTRY(_strncpy) |
| 10 | movl 12(%ebp), %edi /* edi = string s2 */ |
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| 11 | xorb %al, %al /* Look for a zero byte */ |
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| 12 | movl %ecx, %edx /* Save maximum count */ |
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| 13 | cld |
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| 1408 | serge | 14 | |
| 1627 | serge | 15 | repne scasb /* Look for end of s2 */ |
| 16 | subl %ecx, %edx /* Number of bytes in s2 including null */ |
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| 17 | xchgl %edx, %ecx |
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| 18 | movl 12(%ebp), %esi /* esi = string s2 */ |
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| 19 | movl 8(%ebp), %edi /* edi = string s1 */ |
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| 1408 | serge | 20 | |
| 1627 | serge | 21 | rep movsb /* Copy bytes */ |
| 1408 | serge | 22 | ret |