blob: 6025d141a83ab51818bb6b0a5b68e39e4ed49e8b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
TEXT mpdigdiv(SB),$0
/* MOVL dividend+0(FP),BX */
MOVL 0(RARG),AX
MOVL 4(RARG),DX
MOVL divisor+8(FP),BX
MOVQ quotient+16(FP),DI
XORL CX,CX
CMPL DX,BX /* dividend >= 2^32 * divisor */
JHS _divovfl
CMPL BX,CX /* divisor == 0 */
JE _divovfl
DIVL BX /* AX = DX:AX/BX */
MOVL AX,0(DI)
RET
/* return all 1's */
_divovfl:
NOTL CX
MOVL CX,0(DI)
RET
|
