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kolibrios/programs/fs/kfar/trunk/kfar_arc/crc.inc

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init_crc_table:
xor edx, edx
mov edi, crc_table
.1:
mov ecx, 8
mov eax, edx
.2:
shr eax, 1
jnc @f
xor eax, 0xEDB88320
@@:
loop .2
stosd
inc dl
jnz .1
ret
crc_continue:
; in: eax = pervios crc, ecx = size, esi->buffer
; out: eax = crc
xor eax, -1
jecxz crc.end
jmp crc.loop
crc:
; in: ecx=size, esi->buffer
; out: eax=crc
or eax, -1
jecxz .end
.loop:
movzx edx, al
xor dl, byte [esi]
inc esi
shr eax, 8
xor eax, [crc_table+edx*4]
loop .loop
.end:
xor eax, -1
ret