IBM PPC440X5 Manual do Utilizador descarregar pdf (Página 258)

100

101

addi

Add Immediate

PPC440x5 CPU Core User’s Manual Preliminary

Page 258 of 589

instrset.fm.

September 12, 2002

addi

Add Immediate

(RT) ← (RA|0) + EXTS(IM)

If the RA field is 0, the IM field, sign-extended to 32 bits, is placed into register RT.

If the RA field is nonzero, 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.

Registers Altered

•RT

Programming Note

To place an immediate, sign-extended value into the GPR specified by RT, set RA = 0.

addi RT, RA, IM

14 RT RA IM

0 6 11 16 31

Table 9-4. Extended Mnemonics for addi

Mnemonic Operands Function

Other Registers

Altered

RT, D(RA)

Load address (RA ≠ 0); D is an offset from a base address that

is assumed to be (RA).

(RT) ← (RA) + EXTS(D)

Extended mnemonic for

addiRT,RA,D

RT, IM

Load immediate.

(RT) ← EXTS(IM)

Extended mnemonic for

addi RT,0,IM

subi

RT, RA, IM

Subtract EXTS(IM) from (RA|0).

Place result in RT.

Extended mnemonic for

addi RT,RA,−IM

1 2 ... 253 254 255 256 257 258 259 260 261 262 263 ... 589 590

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