GMS30C2116 datasheet(77/322 Pages) HYNIX

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INSTRUCTION SET

3-13

3.4 Logical Instructions

The result of a bitwise logical AND, AND not (ANDN), OR or exclusive OR (XOR) of the

source or immediate operand and the destination operand is placed in the destination

inverted (itself remaining unchanged).

All operands and the result are interpreted as bit-strings of 32 bits each.

Format

Notation

Operation

AND

Rd, Rs

Rd := Rd and Rs;

-- logical AND

Z := Rd = 0;

ANDN

Rd, Rs

Rd := Rd and not Rs;

-- logical AND with source

Z := Rd = 0;

used inverted

Rd, Rs

Rd := Rd or Rs;

-- logical OR

Z := Rd = 0;

XOR

Rd, Rs

Rd := Rd xor Rs;

-- logical exclusive OR

Z := Rd = 0;

Rimm

ANDNI

Rd, imm

Rd := Rd and not imm;

-- logical AND with imm

Z := Rd = 0;

used inverted

Rimm

ORI

Rd, imm

Rd := Rd or imm;

-- logical OR

Z := Rd = 0;

Rimm

XORI

Rd, imm

Rd := Rd xor imm;

-- logical exclusive OR

Z := Rd = 0;

Note: ANDN and ANDNI are the instructions complementary to OR and ORI: Where OR

and ORI set bits, ANDN and ANDNI clear bits at bit positions with a "one" bit in the

source or immediate operand, thus obviating the need for an inverted mask in most cases.

L0 : $0F0CFFFF

L1 : $FFFF0000

Instruction

AND

L0, L1

; L0 = L0 and L1 = $0F0C0000

ANDN

L0, L1

; L0 = L0 and not L1 = $0000FFFF

L0, L1

; L0 = L0 or L1 = $FFFFFFFF

XOR

L0, L1

; L0 = L0 xor L1 = $F0F3FFFF

ANDNI L0, $1234

; L0 = L0 and not imm = $0F0CEDCB

ORI

L0, $1234

; L0 = L0 or imm = $0F0CFFFF

XORI

L0, $1234

; L0 = L0 xor imm = $0F0CEDCB

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