IBM PPC440X5 Manual do Utilizador descarregar pdf (Página 259)

100

101

addic

Add Immediate Carrying

Preliminary PPC440x5 CPU Core User’s Manual

instrset.fm.

September 12, 2002 Page 259 of 589

addic

Add Immediate Carrying

(RT) ← (RA) + EXTS(IM)

if (RA) + EXTS(IM) 2

– 1 then

XER[CA]

← 1

else

XER[CA]

← 0

The sum of the contents of register RA and the contents of the IM field, sign-extended to 32 bits, is placed

into register RT.

XER[CA] is set to a value determined by the unsigned magnitude of the result of the add operation.

Registers Altered

•RT

• XER[CA]

addic RT, RA, IM

12 RT RA IM

0 6 11 16 31

Table 9-5. Extended Mnemonics for addic

Mnemonic Operands Function

Other Registers

Altered

subic

RT, RA, IM

Subtract EXTS(IM) from (RA)

Place result in RT; place carry-out in XER[CA].

Extended mnemonic for

addic RT,RA,−IM

1 2 ... 254 255 256 257 258 259 260 261 262 263 264 ... 589 590

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