
Добавил:
Upload
Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз:
Предмет:
Файл:Лаб2012 / 25366717.pdf
X
- •A.1 Notes on Using OPCODE Tables
- •A.2 Key to Abbreviations
- •A.2.1 Codes for Addressing Method
- •A.2.2 Codes for Operand Type
- •A.2.3 Register Codes
- •A.3 Opcode Look-up Examples
- •A.3.1 One-Byte Opcode Instructions
- •A.3.2 Two-Byte Opcode Instructions
- •A.3.3 Opcode Map Notes
- •A.3.4 Opcode Extensions for One-Byte and Two-Byte Opcodes
- •A.3.5 Escape Opcode Instructions
- •A.3.5.1 Escape Opcodes with D8 as First Byte
- •A.3.5.2 Escape Opcodes with D9 as First Byte
- •A.3.5.3 Escape Opcodes with DA as First Byte
- •A.3.5.4 Escape Opcodes with DB as First Byte
- •A.3.5.5 Escape Opcodes with DC as First Byte
- •A.3.5.6 Escape Opcodes with DD as First Byte
- •A.3.5.7 Escape Opcodes with DE as First Byte
- •A.3.5.8 Escape Opcodes with DF As First Byte
- •APPENDIX B Instruction Formats and Encodings
- •B.1 Machine Instruction Format
- •B.1.1 Legacy Prefixes
- •B.1.2 REX Prefixes
- •B.1.3 Opcode Fields
- •B.1.4 Special Fields
- •B.1.4.1 Reg Field (reg) for Non-64-Bit Modes
- •B.1.4.2 Reg Field (reg) for 64-Bit Mode
- •B.1.4.3 Encoding of Operand Size (w) Bit
- •B.1.4.4 Sign-Extend (s) Bit
- •B.1.4.5 Segment Register (sreg) Field
- •B.1.4.6 Special-Purpose Register (eee) Field
- •B.1.4.7 Condition Test (tttn) Field
- •B.1.4.8 Direction (d) Bit
- •B.1.5 Other Notes
- •B.2 General-Purpose Instruction Formats and Encodings for Non-64-Bit Modes
- •B.2.1 General Purpose Instruction Formats and Encodings for 64-Bit Mode
- •B.4 64-bit Mode Instruction Encodings for SIMD Instruction Extensions
- •B.5 MMX Instruction Formats and Encodings
- •B.5.1 Granularity Field (gg)
- •B.5.3 MMX Instruction Formats and Encodings Table
- •B.6 P6 Family INstruction Formats and Encodings
- •B.7 SSE Instruction Formats and Encodings
- •B.8 SSE2 Instruction Formats and Encodings
- •B.8.1 Granularity Field (gg)
- •B.9 SSE3 Formats and Encodings Table
- •B.10 Special Encodings for 64-Bit Mode
- •B.11 Floating-Point Instruction Formats and Encodings
- •C.1 Simple Intrinsics
- •INDEX FOR VOLUME 2A & 2B
- •INTEL SALES OFFICES

INSTRUCTION FORMATS AND ENCODINGS
B.1.5 Other Notes
Table B-12 contains notes on particular encodings. These notes are indicated in the tables shown in the following sections by superscripts.
|
Table B-12. Notes on Instruction Encoding |
|
|
Symbol |
Note |
|
|
A |
A value of 11B in bits 7 and 6 of the ModR/M byte is reserved. |
|
|
Vol. 2B B-9
Соседние файлы в папке Лаб2012