Mul instruction x86 or x64

128-bit media instructions Instructions that operate on the various 128-bit vector data types. Supported within both the legacy SSE and extended SSE The x86 and AMD64 architectures address memory using little-endian byte-ordering. Multibyte values are stored with their least-significant byte at Notes on x86-64 programming. This document gives a brief summary of the x86-64 architecture and instruction set. It concentrates on features likely to be useful to compiler writing. It makes no aims at completeness; current versions of this architecture contain over 1000 distinct instructions! x86 Instruction Set Architecture. Comprehensive 32/64-bit Coverage. First Edition. AMD Opteron Processor (Barcelona) Intel 32/64-bit x86 Software Architecture AMD 32/64-bit x86 Software Architecture. x86 Architecture Overview. The IA-32 is the instruction set architecture (ISA) of Intel's most successful line of 32-bit processors, and the Intel 64 ISA is its extension into 64-bit processors. (Actually Intel 64 was invented by AMD, who called it x86-64). These notes summarize a few items of interest about Brief introduction to x86-64 instruction encoding. An example: manually encode an x86-64 instruction. Before you move on to following parts, let's make clear of one especially confusing part for beginners about the assembly syntax when you read various documents • 7 X86 Instructions • 7.1 Conventions. • 8 Data Transfer • 8.1 Data transfer instructions • 8.1.1 Move • 8.1.2 Data Swap • 8.1.3 Move and Extend • 8.1.4 Move by Data Size. x86 assembly has a number of differences between architectures that are 16 bits, 32 bits, and 64 bits. As MUL, only signed. x86_64 NASM Assembly Quick Reference ("Cheat Sheet"). Here's the full list of ordinary integer x86 registers. The 64 bit registers are shown in red. Multiply rax and src as unsigned integers, and put the result in rax. High 64 bits of product (usually zero) go into rdx. mul rdx ; Multiply rax by rdx ; rax=low For the mul instruction, the destination operand is hard-coded as the ax register. The source operand is the one that you pass as a parameter: it can be x86 and amd64 instruction reference. Derived from the May 2019 version of the Intel® 64 and IA-32 Architectures Software Developer's Manual.Last Microcode Instruction Set. Intercepting x86 Instructions. Listing 6: x86 machine code implementing 64-bit right shift using the shrd instruction. Mnem add or adc sbb and sub xor cmp test rll rrl sll srl mov mul imul bswap not writePC branchCC ld st. This page contains very basic information on the x86_64 architecture: the register layout and naming and the some basic instructions. The 64-bit versions of the 'original' x86 registers are named: rax - register a extended. rbx - register b extended. rcx - register c extended. rdx - register d extended. rbp