Subf; Table 9-29. Extended Mnemonics For Subf, Subf., Subfo, Subfo; Sub - IBM PPC440X5 CPU Core User Manual

Preliminary

subf

Subtract From
subf RT, RA, RB
subf. RT, RA, RB
subfo RT, RA, RB
subfo. RT, RA, RB
31
0 6
(RT) (RA) + (RB) + 1
The sum of the ones complement of register RA, register RB, and 1 is stored into register RT.
Registers Altered
• RT
• CR[CR0] if Rc contains 1
• XER[SO, OV] if OE contains 1

Table 9-29. Extended Mnemonics for subf, subf., subfo, subfo.

Mnemonic Operands

sub

sub.
RT, RA, RB
subo
subo.
instrset.fm.
September 12, 2002
OE=0, Rc=0
OE=0, Rc=1
OE=1, Rc=0
OE=1, Rc=1
RT RA
11
Subtract (RB) from (RA).
(RT) (RB) + (RA) + 1.
Extended mnemonic for
subf RT,RB,RA
Extended mnemonic for
subf. RT,RB,RA
Extended mnemonic for
subfo RT,RB,RA
Extended mnemonic for
subfo. RT,RB,RA
PPC440x5 CPU Core User's Manual
RB OE
16 21 22
Function
subf
Subtract From
40 Rc
31
Other Registers
Altered
CR[CR0]
XER[SO, OV]
CR[CR0]
XER[SO, OV]
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