IBM PPC440X5 Manual do Utilizador descarregar pdf (Página 370)

100

101

mtspr

Move To Special Purpose Register

PPC440x5 CPU Core User’s Manual Preliminary

Page 370 of 589

instrset.fm.

September 12, 2002

mtspr

Move To Special Purpose Register

SPRN ← SPRF

5:9

|| SPRF

0:4

(SPR(SPRN)) ← (RS)

The contents of register RS are placed into register RT. See Special Purpose Registers 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

• SPR(SPRN)

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 mtspr instruction refers to an

SPR number. The assembler handles the unusual register number encoding to generate the SPRF field.

mtspr SPRN, RS

31 RS SPRF 467

0 6 11 21 31

1 2 ... 365 366 367 368 369 370 371 372 373 374 375 ... 589 590

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