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/*
* This only works on R[45]000 chips that allow 64 bit
* integer arithmetic even when uding 32 bit addresses
*
* R1 = dividend*
* R2 = dividend[low]
* R3 = dividend[high]
* R4 = 32 bit divisor
* R5 = quotient*
*/
TEXT mpdigdiv(SB),$0
MOVW 0(R1),R2
MOVW 4(R1),R3
MOVW divisor+4(FP),R4
MOVW quotient+8(FP),R5
/* divisor == 0 */
BEQ R4,_digovfl
/* dividend >= 2^32 * divisor */
SGTU R4,R3,R7
BEQ R7,_digovfl
_digdiv1:
SLLV $32,R2
SLLV $32,R3
SRLV $32,R2
ADDVU R2,R3
SLLV $32,R4
SRLV $32,R4
DIVVU R4,R3
MOVW LO,R1
MOVW R1,0(R5)
RET
_digovfl:
MOVW $-1,R1
MOVW R1,0(R5)
RET
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