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9-124 PPC405 Core User’s Manual
mulhhwu
Multiply High Halfword to Word Unsigned
mulhhwu
Multiply High Halfword to Word Unsigned
(RT)
0
:
31
← (RA)
0:15
x (RB)
0:15
unsigned
The high-order halfword of RA is multiplied by the high-order halfword of RB. The resulting unsigned
product replaces the contents of RT.
Registers Altered
•RT
• CR[CR0]
LT, GT, EQ, SO
if Rc contains 1
Architecture Note
This instruction is part of the Multiply-Accumulate instruction set extensions and complies with the
architectural requirements for APUs of the IBM PowerPC Embedded Environment. As such, it is not
part of the PowerPC Architecture, nor is it part of the IBM PowerPC Embedded Environment.
Programs that use this instruction may not be portable to other implementations.
mulhhwu RT, RA, RB Rc=0
mulhhwu. RT, RA, RB Rc=1
4RTRARB 8Rc
0 6 11 16 21 31