| /programs/develop/ktcc/trunk/libc/string/memmove.asm |
|---|
| 7,29 → 7,47 |
| public memmove |
| proc memcpy c, to:dword,from:dword,count:dword |
| push esi |
| push edi |
| mov ecx,[count] |
| test ecx,ecx |
| jz no_copy_block |
| mov esi,[from] |
| mov edi,[to] |
| cld |
| rep movsb |
| no_copy_block: |
| pop edi |
| pop esi |
| mov eax, [to] |
| ret |
| endp |
| proc memmove c, to:dword,from:dword,count:dword |
| push esi |
| push edi |
| mov ecx,[count] |
| test ecx,ecx |
| jz no_copy_block_ |
| mov esi,[from] |
| mov edi,[to] |
| cmp esi, edi |
| je no_copy_block_ |
| jg copy_ |
| add esi, ecx |
| add edi, ecx |
| dec esi |
| dec edi |
| std |
| copy_: |
| rep movsb |
| cld |
| no_copy_block_: |
| pop edi |
| pop esi |
| mov eax,[to] |
| ret |
| endp |
| endp |