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Instruction Set 9-173
stwu
Store Word with Update
stwu
Store Word with Update
EA (RA) + EXTS(D)
MS(EA, 4)
(RS)
(RA)
EA
An effective address (EA) is formed by adding a displacement to the base address in register RA. The
displacement is obtained by sign-extending the 16-bit D field to 32 bits. The EA is placed into register
RA.
The contents of register RS are stored into the word at the EA.
Registers Altered
•RA
Invalid Instruction Forms
RA = 0
Architecture Note
This instruction is part of the PowerPC User Instruction Set Architecture.
stwu RS, D(RA)
37 RS RA D
0 6 11 16 31