AN2491 Freescale Semiconductor / Motorola, AN2491 Datasheet - Page 24

• Manufacturer Part Number: AN2491
• Description: Simplified Mnemonics for PowerPC Instructions
• Manufacturer: Freescale Semiconductor / Motorola

EIS-Specific Simplified Mnemonics
EIS-Specific Simplified Mnemonics
10.5 Complement Register (not)
Several instructions can be coded in such a way that they complement the contents of one register and place
the result into another register. A simplified mnemonic is provided that allows this operation to be coded
easily.
The following instruction complements the contents of rS and places the result into rA. This mnemonic can
be coded with a dot (.) suffix to cause the Rc bit to be set in the underlying instruction.
10.6 Move to Condition Register (mtcr)
This mnemonic permits copying the contents of a GPR to the CR, using the same syntax as the mfcr
instruction.
11 EIS-Specific Simplified Mnemonics
This section describes simplified mnemonics for instructions defines by auxiliary processing units (APUs)
defined as part of the Motorola Book E implementation standards (EIS).
11.1 Integer Select (isel)
The following mnemonics simplify the most common variants of the isel instruction that access CR0:
11.2 SPE Mnemonics
The following mnemonic handles moving of the full 64-bit SPE GPR:
The following mnemonic performs a complement register:
24
not rA,rS
mtcr rS
Integer Select Less Than
isellt rD,rA,rB
Integer Select Greater Than
iselgt rD,rA,rB
Integer Select Equal
iseleq rD,rA,rB
Vector Move
evmr rD,rA
Vector Not
evnot rD,rA
Simplified Mnemonics for PowerPC™ Instructions
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equivalent to
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nor rA,rS,rS
mtcrf 0xFF,rS
isel rD,rA,rB,0
isel rD,rA,rB,1
isel rD,rA,rB,2
evor rD,rA,rA
evnor rD,rA,rA
MOTOROLA