AMD
AMD64 Architecture Programmer's Manual
Volume 1: Application Programming
Volume 2: System Programming
Volume 3: General-Purpose and System Instructions
Volume 4: 128-bit and 256-bit Media Instructions
Volume 5: 64-bit Media and x87 Floating-Point Instructions
Family 17h
Software Optimization Guide
Software Optimization Guide (Models 30h+)
Open-Source Register Reference
Processor Programming Reference
ARM
ARM A-profile Architecture Reference Manual
Intel
Optimization Reference Manual
Software Developer's Manual
Volume 1: Basic Architecture
Volume 2: Instruction Set Reference, A-Z
Volume 3: System Programming Guide
Volume 4: Model-Specific Registers
Power
IBM Power ISA Version 3.1