x86-64

Registers:

• RSP
• RBP
• RAX
• RCX
• RDX
• RBX
• RSP
• RSI
• R8-R15

Registers can be referenced through their smaller-bit counterparts . Eg.

64-bit general purpose register RAX. 8-bit → AL 16-bit → AX. 32 bits → EAX

For R8–R15 registers, the B, D, and W suffixes denote the lower 8, 16, and 32 bits, respectively.

x86-64 Instructions