EDIV Instruction

Purpose:

To perform extended-precision division

Format:

opcode divr.rl, divd.rq, quo.wl, rem.wl

Operation:

quo <- divd/divr;
rem <- remainder(divd/divr);

Condition
Codes:

N <- quo LSS 0;
Z <- quo EQL 0;
V <- integer overflow OR divr equals 0;
C <- 0;

Exceptions:

Integer Overflow
Divide by Zero

Opcodes:

EDIV

Extended Divide

Description:

The dividend operand is divided by the divisor operand; the quotient operand is replaced by the quotient and the remainder operand is replaced by the remainder.

Notes:

1.: The division is performed such that the remainder operand (unless it is 0) has the same sign as the dividend operand.
2.: On overflow, the operands are affected as in 3 below.
3.: If the divisor operand is 0, then the quotient operand is replaced by bits 31:0 of the dividend operand, and the remainder operand is replaced by 0.