Intel ITANIUM ARCHITECTURE - SOFTWARE DEVELOPERS MANUAL VOLUME 1 REV 2.3 Manual page 1087

mpy4
mpy4 — Unsigned Integer Multiply
( ) mpy4
Format: qp
The lower 32 bits of each of the two source operands are treated as unsigned values
Description:
and are multiplied, and the result is placed in GR
source operands are ignored.
Operation: if (PR[qp]) {
if (!instruction_implemented(mpy4))
illegal_operation_fault();
check_target_register(r
GR[r ] = zero_ext(GR[r
1
GR[r ].nat = GR[r
1
}
Illegal Operation fault
Interruptions:
3:188
= ,
r r r
1 2 3
);
1
], 32) * zero_ext(GR[r
2
].nat || GR[r
2
. The upper 32 bits of each of the
r
1
], 32);
3
].nat;
3
Volume 3: Instruction Reference
I2