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Intel® Architecture Instruction Set Extensions Programming Reference

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INSTRUCTION SET REFERENCE - VEX-ENCODED GPR INSTRUCTIONS<br />

CHAPTER 7<br />

INSTRUCTION SET REFERENCE - VEX-ENCODED GPR INSTRUCTIONS<br />

This chapter describes the various general-purpose instructions, the majority of which are encoded using VEX<br />

prefix.<br />

7.1 INSTRUCTION FORMAT<br />

The format used for describing each instruction as in the example below is described in Chapter 5.<br />

ANDN — Logical AND NOT (THIS IS AN EXAMPLE)<br />

Opcode/<strong>Instruction</strong> Op/<br />

En<br />

64/32<br />

-bit<br />

Mode<br />

CPUID<br />

Feature<br />

Flag<br />

7.2 INSTRUCTION SET REFERENCE<br />

Description<br />

VEX.NDS.LZ.0F38.W0 F2 /r A V/V BMI1 Bitwise AND of inverted r32b with r/m32, store result in r32a.<br />

ANDN r32a, r32b, r/m32<br />

VEX.NDS.LZ. 0F38.W1 F2 /r A V/NE BMI1 Bitwise AND of inverted r64b with r/m64, store result in r64b.<br />

ANDN r64a, r64b, r/m64<br />

<strong>Instruction</strong> Operand Encoding<br />

Op/En Operand 1 Operand 2 Operand 3 Operand 4<br />

A ModRM:reg (r, w) VEX.vvvv (r) ModRM:r/m (r) NA<br />

Ref. # 319433-014 7-1

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