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Assembler Language Reference

Extended Mnemonics of Moving from or to Special-Purpose Registers

This article discusses the following extended mnemonics:

mfspr Extended Mnemonics for POWER family

Table 15. mfspr Extended Mnemonics for POWER family
Extended Mnemonic Equivalent to Privileged SPR Name
mfxer rt mfspr rt,1 no XER
mflr rt mfspr rt,8 no LR
mfctr rt mfspr rt,9 no CTR
mfmq rt mfspr rt,0 no MQ
mfrtcu rt mfspr rt,4 no RTCU
mfrtcl rt mfspr rt,5 no RTCL
mfdec rt mfspr rt,6 no DEC
mftid rt mfspr rt,17 yes TID
mfdsisr rt mfspr rt,18 yes DSISR
mfdar rt mfspr rt,19 yes DAR
mfsdr0 rt mfspr rt,24 yes SDR0
mfsdr1 rt mfspr rt,25 yes SDR1
mfsrr0 rt mfspr rt,26 yes SRR0
mfsrr1 rt mfspr rt,27 yes SRR1

mtspr Extended Mnemonics for POWER family

Table 16. mtspr Extended Mnemonics for POWER family
Extended Mnemonic Equivalent to Privileged SPR Name
mfxer rs mtspr 1,rs no XER
mflr rs mtspr 8,rs no LR
mtctr rs mtspr 9,rs no CTR
mtmq rs mtspr 0,rs no MQ
mtrtcu rs mtspr 20,rs yes RTCU
mtrtcl rs mtspr 21,rs yes RTCL
mtdec rs mtspr 22,rs yes DEC
mttid rs mtspr 17,rs yes TID
mtdsisr rs mtspr 18,rs yes DSISR
mtdar rs mtspr 19,rs yes DAR
mtsdr0 rs mtspr 24,rs yes SDR0
mtsdr1 rs mtspr 25,rs yes SDR1
mtsrr0 rs mtspr 26,rs yes SRR0
mtsrr1 rs mtspr 27,rs yes SRR1

mfspr Extended Mnemonics for PowerPC

Table 17. mfspr Extended Mnemonics for PowerPC
Extended Mnemonic Equivalent to Privileged SPR Name
mfxer rt mfspr rt,1 no XER
mflr rt mfspr rt,8 no LR
mfctr rt mfspr rt,9 no CTR
mfdsisr rt mfspr rt,18 yes DSISR
mfdar rt mfspr rt,19 yes DAR
mfdec rt mfspr rt,22 yes DEC
mfsdr1 rt mfspr rt,25 yes SDR1
mfsrr0 rt mfspr rt,26 yes SRR0
mfsrr1 rt mfspr rt,27 yes SRR1
mfsprg rt,0 mfspr rt,272 yes SPRG0
mfsprg rt,1 mfspr rt,273 yes SPRG1
mfsprg rt,2 mfspr rt,274 yes SPRG2
mfsprg rt,3 mfspr rt,275 yes SPRG3
mfear rt mfspr rt,282 yes EAR
mfpvr rt mfspr rt,287 yes PVR
mfibatu rt,0 mfspr rt,528 yes IBAT0U
mfibatl rt,1 mfspr rt,529 yes IBAT0L
mfibatu rt,1 mfspr rt,530 yes IBAT1U
mfibatl rt,1 mfspr rt,531 yes IBAT1L
mfibatu rt,2 mfspr rt,532 yes IBAT2U
mfibatl rt,2 mfspr rt,533 yes IBAT2L
mfibatu rt,3 mfspr rt,534 yes IBAT3U
mfibatl rt,3 mfspr rt,535 yes IBAT3L
mfdbatu rt,0 mfspr rt,536 yes DBAT0U
mfdbatl rt,0 mfspr rt,537 yes DBAT0L
mfdbatu rt,1 mfspr rt,538 yes DBAT1U
mfdbatl rt,1 mfspr rt,539 yes DBAT1L
mfdbatu rt,2 mfspr rt,540 yes DBAT2U
mfdbatl rt,2 mfspr rt,541 yes DBAT2L
mfdbatu rt,3 mfspr rt,542 yes DBAT3U
mfdbatl rt,3 mfspr rt,543 yes DBAT3L
Note
The mfdec instruction is a privileged instruction in PowerPC. The encoding for this instruction in PowerPC differs from that in POWER family. See the mfspr (Move from Special-Purpose Register) Instruction for information on this instruction. Differences between POWER family and PowerPC Instructions with the Same Op Code provides a summary of the differences for this instruction for POWER family and PowerPC.

mtspr Extended Mnemonics for PowerPC

Table 18. mtspr Extended Mnemonics for PowerPC
Extended Mnemonic Equivalent to Privileged SPR Name
mtxer rs mtspr 1,rs no XER
mtlr rs mtspr 8,rs no LR
mtctr rs mtspr 9,rs no CTR
mtdsisr rs mtspr 19,rs yes DSISR
mtdar rs mtspr 19,rs yes DAR
mtdec rs mtspr 22,rs yes DEC
mtsdr1 rs mtspr 25,rs yes SDR1
mtsrr0 rs mtspr 26,rs yes SRR0
mtsrr1 rs mtspr 27,rs yes SRR1
mtsprg 0,rs mtspr 272,rs yes SPRG0
mtsprg 1,rs mtspr 273,rs yes SPRG1
mtsprg 2,rs mtspr 274,rs yes SPRG2
mtsprg 3,rs mtspr 275,rs yes SPRG3
mtear rs mtspr 282,rs yes EAR
mttbl rs (or mttb rs) mtspr 284,rs yes TBL
mttbu rs mtspr 285,rs yes TBU
mtibatu 0,rs mtspr 528,rs yes IBAT0U
mtibatl 0,rs mtspr 529,rs yes IBAT0L
mtibatu 1,rs mtspr 530,rs yes IBAT1U
mtibatl 1,rs mtspr 531,rs yes IBAT1L
mtibatu 2,rs mtspr 532,rs yes IBAT2U
mtibatl 2,rs mtspr 533,rs yes IBAT2L
mtibatu 3,rs mtspr 534,rs yes IBAT3U
mtibatl 3,rs mtspr 535,rs yes IBAT3L
mtdbatu 0,rs mtspr 536,rs yes DBAT0U
mtdbatl 0,rs mtspr 537,rs yes DBAT0L
mtdbatu 1,rs mtspr 538,rs yes DBAT1U
mtdbatl 1,rs mtspr 539,rs yes DBAT1L
mtdbatu 2,rs mtspr 540,rs yes DBAT2U
mtdbatl 2,rs mtspr 541,rs yes DBAT2L
mtdbatu 3,rs mtspr 542,rs yes DBAT3U
mtdbatl 3,rs mtspr 543,rs yes DBAT3L
Note
The mfdec instruction is a privileged instruction in PowerPC. The encoding for this instruction in PowerPC differs from that in POWER family. See the mfspr (Move from Special-Purpose Register) Instruction for information on this instruction. Differences between POWER family and PowerPC Instructions with the Same Op Code provides a summary of the differences for this instruction for POWER family and PowerPC.

mfspr Extended Mnemonics for PowerPC 601 RISC Microprocessor

Table 19. mfspr Extended Mnemonics for PowerPC 601 RISC Microprocessor
Extended Mnemonic Equivalent to Privileged SPR Name
mfmq rt mfspr rt,0 no MQ
mfxer rt mfspr rt,1 no XER
mfrtcu rt mfspr rt,4 no RTCU
mfrtcl rt mfspr rt,5 no RTCL
mfdec rt mfspr rt,6 no DEC
mflr rt mfspr rt,8 no LR
mfctr rt mfspr rt,9 no CTR
mfdsisr rt mfspr rt,18 yes DSISR
mfdar rt mfspr rt,19 yes DAR
mfsdr1 rt mfspr rt,25 yes SDR1
mfsrr0 rt mfspr rt,26 yes SRR0
mfsrr1 rt mfspr rt,27 yes SRR1
mfsprg rt,0 mfspr rt,272 yes SPRG0
mfsprg rt,1 mfspr rt,273 yes SPRG1
mfsprg rt,2 mfspr rt,274 yes SPRG2
mfsprg rt,3 mfspr rt,275 yes SPRG3
mfear rt mfspr rt,282 yes EAR
mfpvr rt mfspr rt,287 yes PVR

mtspr Extended Mnemonics for PowerPC 601 RISC Microprocessor

Table 20. mtspr Extended Mnemonics for PowerPC 601 RISC Microprocessor
Extended Mnemonic Equivalent to Privileged SPR Name
mtmq rs mtspr 0,rs no MQ
mtxer rs mtspr 1,rs no XER
mtlr rs mtspr 8,rs no LR
mtctr rs mtspr 9,rs no CTR
mtdsisr rs mtspr 18,rs yes DSISR
mtdar rs mtspr 19,rs yes DAR
mtrtcu rs mtspr 20,rs yes RTCU
mtrtcl rs mtspr 21,rs yes RTCL
mtdec rs mtspr 22,rs yes DEC
mtsdr1 rs mtspr 25,rs yes SDR1
mtsrr0 rs mtspr 26,rs yes SRR0
mtsrr1 rs mtspr 27,rs yes SRR1
mtsprg 0,rs mtspr 272,rs yes SPRG0
mtsprg 1,rs mtspr 273,rs yes SPRG1
mtsprg 2,rs mtspr 274,rs yes SPRG2
mtsprg 3,rs mtspr 275,rs yes SPRG3
mtear rs mtspr 282,rs yes EAR

Related Information

Extended Instruction Mnemonics.

Extended Mnemonics of Branch Instructions.

Extended Mnemonics of Condition Register Logical Instructions.

Extended Mnemonics of Fixed-Point Arithmetic Instructions.

Extended Mnemonics of Fixed-Point Compare Instructions.

Extended Mnemonics of Fixed-Point Load Instructions.

Extended Mnemonics of Fixed-Point Logical Instructions.

Extended Mnemonics of Fixed-Point Trap Instructions.

Extended Mnemonics of 32-bit Fixed-Point Rotate and Shift Instructions.

mfspr (Move from Special-Purpose Register) Instruction, mtspr (Move to Special-Purpose Register) Instruction.

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