x86-64 asm cheatsheet

x8664-asm-cheetsheet.txt

Registers
    Caller-saved                                Callee-saved
    RAX RCX RSP RDI RSI RDX R8 R9 R10 R11       RBP RBX R12 R13 R14 R15

    Args: RDI, RSI, RDX, RCX, R8, R9, XMM0–7
    Return: RAX

Simple Compile
    yasm -f macho64 foo.asm && gcc foo.c foo.o -Wall -Wextra -g -O1

Template
    section .text
    global _func

    _func:
        push rbp
        mov rbp,rsp

        pop rbp
        ret

If you don't push/pop, the stack gets misaligned. If you do, it's aligned to
16-byte boundary. If not: 8-byte.

https://github.com/webmproject/libvpx/blob/master/vpx_ports/x86_abi_support.asm
https://en.wikipedia.org/wiki/X86_instruction_listings
http://www.agner.org/optimize/instruction_tables.pdf
http://www.agner.org/optimize/microarchitecture.pdf