2014-08-27 05:05:29 +00:00
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; int __cdecl memcmp(const void *s1, const void *s2, size_t n)
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public _memcmp
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2014-11-05 17:20:02 +00:00
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_memcmp proc
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2014-08-27 05:05:29 +00:00
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@@s1 = DPTR_ 2 + dPtrSize
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@@s2 = DPTR_ 2 + (dPtrSize * 2)
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@@n = word ptr 2 + (dPtrSize * 3)
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push bp
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mov bp, sp
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push si
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push di
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push ds
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mov ax, [bp+@@n]
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mov cx, ax
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jcxz short @@mcm_end
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LDS_ si, [bp+@@s1]
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LES_ di, [bp+@@s2]
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ife LDATA
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mov ax, ds
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mov es, ax
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endif
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cld
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repe cmpsb
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mov al, [si-1]
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xor ah, ah
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mov cl, ES_ [di-1]
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xor ch, ch
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@@mcm_end:
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popDS_
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sub ax, cx
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pop di
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pop si
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pop bp
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ret
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_memcmp endp
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