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stmw
Store Multiple Word
PPC440x5 CPU Core User’s Manual Preliminary
Page 418 of 589
instrset.fm.
September 12, 2002
stmw
Store Multiple Word
EA ← (RA|0) + EXTS(D)
r
← RS
do while r
≤ 31
MS(EA, 4)
← (GPR(r))
r
← r+1
EA
← EA + 4
An effective address (EA) is formed by adding a displacement to a base address. The displacement is
obtained by sign-extending the 16-bit D field to 32 bits. The base address is 0 when the RA field is 0, and is
the contents of register RA otherwise.
The contents of a series of consecutive registers, starting with register RS and continuing through GPR(31),
are stored into consecutive words starting at the EA.
Registers Altered
• None
Programming Note
This instruction can be restarted, meaning that it could be interrupted after having already stored some of the
register values to memory, and then re-executed from the beginning (after returning from the interrupt), in
which case the registers which had already been stored prior to the interrupt will be stored a second time.
stmw RS, D(RA)
47 RS RA D
0 6 11 16 31