Intel x86 Assembler Instruction Set Opcode Table
A ModR/M byte follows the opcode and specifies the operand. The operand is either a general-purpose register or a memory address. If it is a memory address, the address is computed from a segment register and any of the following values: a base register, an index register, a scaling factor, a displacement.
assembly - Intel x86 Opcode Reference? - Stack Overflow
2017年5月24日 · Check this very complete table of x86 opcodes on x86asm.net. Just CTRL+F and you're done! Be sure to read the correct line tho, as C8 for example may appear in several locations.
X86 Opcode and Instruction Reference
This reference is intended to be precise opcode and instruction set reference (including x86-64). Its principal aim is exact definition of instruction parameters and attributes.
Intel x86 Opcode Table and Reference - Shell-Storm
Intel x86 Opcode Table and Reference . I used for years the Félix Cloutier's repository, but when it was done, I was kinda stuck and so decided to provide a backup with a different view of the index table and where all information that I need are accessible at first sight.
x86 instruction listings - Wikipedia
The x86 instruction set refers to the set of instructions that x86-compatible microprocessors support. The instructions are usually part of an executable program, often stored as a computer file and executed on the processor.
X86-64 Instruction Encoding - OSDev Wiki
2024年6月24日 · Opcode. The x86-64 instruction set defines many opcodes and many ways to encode them, depending on several factors. Legacy opcodes. Legacy (and x87) opcodes consist of, in this order: mandatory prefix; REX prefix; opcode. Mandatory prefix
X86 Opcode and Instruction Reference - GitHub
X86 Opcode and Instruction Reference. Contribute to mazegen/x86reference development by creating an account on GitHub.
Fixed appended value to the primary opcode o: Register/Opcode field. Either the value of an opcode extension (values from 0 through 7) or r indicates that the ModR/M byte contains a register operand and an r/m operand proc: Indicates the instruction's introductory processor.
x86 - How to read Assembly Opcode Reference? - Stack Overflow
2017年4月1日 · Look at the table "Table 2-1. 16-Bit Addressing Forms with the ModR/M Byte" in the Intel manual. To answer your question: No, you have to use the specific ADD instruction for the specific purpose. The ADD instructions perform different operations.
Source: Intel x86 Instruction Set Reference Opcode table presentation inspired by work of Ange Albertini MMX, SSE{2,3} MMX, SSE2 MMX, SSE{1,2} MMX, SSE{1,2,3} 1 st 2nd 1 2nd. Title: x86 Opcode Structure and Instruction Overview Author: …