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9-84 PPC405 Core User’s Manual
lmw
Load Multiple Word
lmw
Load Multiple Word
EA ← (RA|0) + EXTS(D)
r
← RT
do while r
≤ 31
if ((r
≠ RA) ∨ (r = 31)) then
(GPR(r))
← MS(EA,4)
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 in the instruction to 32 bits. The base address is 0 if the
RA field is 0 and is the contents of register RA otherwise.
A series of consecutive words starting at the EA are loaded into a set of consecutive GPRs, starting
with register RT and continuing to and including GPR(31). Register RA is not altered by this
instruction (unless RA is GPR(31), which is an invalid form of this instruction). The word which would
have been placed into register RA is discarded.
Registers Altered
• RT through GPR(31).
Invalid Instruction Forms
• RA is in the range of registers to be loaded, including the case RA = RT = 0.
Architecture Note
This instruction is part of the PowerPC User Instruction Set Architecture.
lmw RT, D(RA)
46 RT RA D
0 6 11 16 31