Cheatography
https://cheatography.com
Cheatsheet for ATAM course in the Technion.
This is a draft cheat sheet. It is a work in progress and is not finished yet.
x86-64
In 64 bit processor, address size is 64 bit |
Sizes
Byte |
8 bits |
Word |
16 bits |
Double Word (DWORD) a.k.a Long Word |
32 bits |
Quadruple Word (QWORD) |
64 bits |
Endianness (Order of storing values)
Big Endian: The most significant value in the sequence is stored first, at the lowest storage address.
Little Endian: The least significant value in the sequence is stored first, at the lowest storage address.
In x86-64, Little Endian is used.
|
|
General Purpose Registers
|
|
Special Registers
RIP (Instruction Pointer) |
Pointer to the next instruction to run |
RFLAGS |
Saves the current state of the processor. |
Both registers are 64 bits registers.
Assembly File Structure
The assembly file is divided into sections using "Section Directives".
Moreover, the file can contain Global and External declarations, Directives, Labels, Comments, and of course, the assembly Instructions.
|
