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| 1 | ! _strncpy() Author: Kees J. Bot
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| 2 | ! 1 Jan 1994
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| 3 | .sect .text; .sect .rom; .sect .data; .sect .bss
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| 4 |
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| 5 | ! char *_strncpy(char *s1, const char *s2, size_t ecx)
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| 6 | ! Copy string s2 to s1.
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| 7 | !
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| 8 | .sect .text
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| 9 | .define __strncpy
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| 10 | .align 16
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| 11 | __strncpy:
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| 12 | mov edi, 12(ebp) ! edi = string s2
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| 13 | xorb al, al ! Look for a zero byte
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| 14 | mov edx, ecx ! Save maximum count
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| 15 | cld
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| 16 | repne
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| 17 | scasb ! Look for end of s2
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| 18 | sub edx, ecx ! Number of bytes in s2 including null
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| 19 | xchg ecx, edx
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| 20 | mov esi, 12(ebp) ! esi = string s2
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| 21 | mov edi, 8(ebp) ! edi = string s1
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| 22 | rep
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| 23 | movsb ! Copy bytes
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| 24 | ret
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