kolibrios-fun/programs/develop/libraries/kolibri-libc/source/libtcc/memmove.asm

35 lines
534 B
NASM
Raw Normal View History

format ELF
section '.text' executable
include '../../../../../proc32.inc'
public memmove
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