UM0434 datasheet(113/390 Pages) STMICROELECTRONICS

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Instruction model

UM0434

114/391

Table 106 lists SPE APU instructions.

Data type

smf

Signed modulo fractional

(Wrap, no saturate)

smi

Signed modulo integer

(Wrap, no saturate)

ssf

Signed saturate fractional

ssi

Signed saturate integer

umi

Unsigned modulo integer

(Wrap, no saturate)

usi

Unsigned saturate integer

Accumulate options

Update accumulator

Update accumulator (no add)

Add to accumulator

Add result to accumulator (64-bit sum)

aaw

Add to accumulator (words)

Add word results to accumulator words (pair of 32-bit sums)

Add negated

Add negated result to accumulator (64-bit sum)

anw

Add negated to accumulator

(words)

Add negated word results to accumulator words (pair of 32-bit

sums)

Table 105.

Mnemonic extensions for multiply-accumulate instructions

Extension

Meaning

Comments

Table 106.

SPE APU vector instructions

Instruction

Mnemonic

Syntax

Bit Reversed Increment(1)

brinc

rD,rA,rB

Initialize Accumulator

evmra

rD,rA

Multiply Half Words, Even, Guarded, Signed, Modulo, Fractional and Accumulate

evmhegsmfaa

rD,rA,rB

Multiply Half Words, Even, Guarded, Signed, Modulo, Fractional and Accumulate

Negative

evmhegsmfan

rD,rA,rB

Multiply Half Words, Even, Guarded, Signed, Modulo, Integer and Accumulate

evmhegsmiaa

rD,rA,rB

Multiply Half Words, Even, Guarded, Signed, Modulo, Integer and Accumulate

Negative

evmhegsmian

rD,rA,rB

Multiply Half Words, Even, Guarded, Unsigned, Modulo, Integer and Accumulate

evmhegumiaa

rD,rA,rB

Multiply Half Words, Even, Guarded, Unsigned, Modulo, Integer and Accumulate

Negative

evmhegumian

rD,rA,rB

Multiply Half Words, Odd, Guarded, Signed, Modulo, Fractional and Accumulate

evmhogsmfaa

rD,rA,rB

Multiply Half Words, Odd, Guarded, Signed, Modulo, Fractional and Accumulate

Negative

evmhogsmfan

rD,rA,rB

Multiply Half Words, Odd, Guarded, Signed, Modulo, Integer and Accumulate

evmhogsmiaa

rD,rA,rB

Multiply Half Words, Odd, Guarded, Signed, Modulo, Integer and Accumulate

Negative

evmhogsmian

rD,rA,rB

Multiply Half Words, Odd, Guarded, Unsigned, Modulo, Integer and Accumulate

evmhogumiaa

rD,rA,rB

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