Mfspr - IBM PPC440X5 CPU Core User Manual

Preliminary

mfspr

Move From Special Purpose Register
mfspr RT, SPRN
31
0 6
SPRN SPRF
5:9
(RT) (SPR(SPRN))
The contents of the SPR specified by the SPRF field are placed into register RT. See Special Purpose Regis-
ters Sorted by SPR Number on page 454 for a listing of SPR mnemonics and corresponding SPRN values.
If instruction bit 31 contains 1, the contents of CR[CR0] are undefined.
Registers Altered
• RT
Invalid Instruction Forms
• Reserved fields
• Invalid SPRF values
Programming Note
Execution of this instruction is privileged if instruction bit 11 contains 1. See Privileged SPRs on page 81 for a
list of privileged SPRs.
The SPR number (SPRN) specified in the assembler language coding of the
SPR number. The assembler handles the unusual register number encoding to generate the SPRF field.
instrset.fm.
September 12, 2002
RT
11
SPRF
0:4
Move From Special Purpose Register
PPC440x5 CPU Core User's Manual
SPRF
21
339
mfspr instruction refers to an
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mfspr
31