kolibrios/programs/develop/ktcc/trunk/libc/string/memmove.asm

format ELF

section '.text' executable
include 'proc32.inc'

public memcpy
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