IBM PPC440X5 Manual do Utilizador descarregar pdf (Página 373)

100

101

mulchw

Multiply Cross Halfword to Word Signed

Preliminary PPC440x5 CPU Core User’s Manual

instrset.fm.

September 12, 2002 Page 373 of 589

mulchw

Multiply Cross Halfword to Word Signed

(RT)

:31

← (RA)

16:31

× (RB)

0:15

signed

The low-order halfword of RA is multiplied by the high-order halfword of RB, considering both source oper-

ands as signed integers. The 32-bit result is placed into register RT.

Registers Altered

•RT

• CR[CR0] if Rc contains 1

Architecture Note

This instruction is implementation-specific and programs which use this instruction may not be portable to

other PowerPC Book-E implementations. See Instruction Set Portability on page 250.

mulchw RT, RA, RB Rc=0

mulchw. RT, RA, RB Rc=1

4 RT RA RB 168 Rc

0 6 11 16 21 31

1 2 ... 368 369 370 371 372 373 374 375 376 377 378 ... 589 590

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