The reference is primarily based on Intel manuals as Intel is the originator of x86 architecture. Additionally, it describes undocumented instructions as well. On appropriate places, it gives a notice if an opcode act differently on AMD architecture. Support for Cyrix, NexGen etc. specific instructions is not scheduled at all.

CS107 Guide to x86-64. Guide to x86-64. A CS107 joint staff effort (Erik, Julie, Nate) x86-64 (also known as just x64 and/or AMD64) is the 64-bit version of the x86/IA32 instruction set. Below is our overview of its features that are relevant to CS107. There is more extensive coverage on these topics in Chapter 3 of the B&O textbook.

2016年3月7日 · So, if I ever have to cross the bridge of death and get asked how many x86-64 instructions there are, I shall answer 2,034. All the numbers in this blog post (except for attempt 5) have been obtained through a small program making use of our awesome C++11 library for working with x86-64 assembly.

Setting up a x64 only project in Visual Studio. You will need to create a C++ project as you normally would. Though you are selecting this to be a C++ project, we will not be creating any C/C++ file types, we will only be creating .asm files. Make sure to give your project a suitable name during the configuration step.

coder64 edition of X86 Opcode and Instruction Reference pf 0F po so o proc st m rl x mnemonic op1 op2 op3 op4 iext tested f modif f def f undef f f values description, notes 00 r L ADD r/m8 r8 o..szapc o..szapc

x64 Cheat Sheet Fall 2019 1 . x6 4 R e g i st e rs x6 4 a sse mb l y co d e u se s si xt e e n 6 4 -b i t re g i st e rs. A d d i t i o n a l l y, t h e l o we r b yt e s o f so me o f t h e se re g i st e rs ma y b e a cce sse d i n d e p e n d e n t l y

Our first program will be really simple: it will load and then immediately exit. We mostly want it just to get acquainted with the tools. Here's the code for our first program in x86-64 assembly: format PE64 NX GUI 6.0 entry start section '.text' code readable executable start: int3 ret.

CS 33 x64 Cheat Sheet Fall 2013 Instruction Description Page # cmp S2,S1 Set condition codes according to S1−S2 185 test S2,S1 Set condition codes according to S1&S2 185 3.4 Accessing Condition Codes None of the following instructions have any suffixes. 3

2022年6月30日 · Unless stated, these instructions can take either one or two arguments. If only one is supplied, it is assumed to be a register or memory location and the number of bits to shift/rotate is one (this may be dependent on the assembler in use, however). shrl $1, %eax is equivalent to shrl %eax (GAS syntax).