+++
title = "Assembly cheatsheets"
date = 2024-10-24
description = "Some resources and cheatsheets about assembly"
insert_anchor_links = "left"
draft = true
[taxonomies]
tags = ["assembly"]
+++

<style type="text/css">
table code {
	background-color: initial;
}
</style>

* [x86 Linux syscalls](https://syscalls32.paolostivanin.com/)
* [x86_64 Linux syscalls](https://syscalls64.paolostivanin.com/)
* [Another website with Linux syscalls](https://syscall.sh/)
* [x86 and x86_64 instruction reference](https://www.felixcloutier.com/x86/)

## Conditional jump

```asm
cmp A, B
jcc after
; conditionally executed code, see the table below
after:
```

| `Jcc` | code executed if | jump if |
|--------|----------|----------|
| `ja`   | `A <= B` | `A > B`  |
| `jae`  | `A < B`  | `A >= B` |
| `jb`   | `A >= B` | `A < B`  |
| `jbe`  | `A > B`  | `A <= B` |
| `je`   | `A == B` | `A != B` |
| `jg`   | `A <= B` | `A > B`  |
| `jge`  | `A < B`  | `A >= B` |
| `jl`   | `A >= B` | `A < B`  |
| `jle`  | `A > B`  | `A <= B` |
| `jna`  | `A > B`  | `A <= B` |
| `jnae` | `A >= B` | `A < B`  |
| `jne`  | `A != B` | `A == B` |
| `jnb`  | `A < B`  | `A >= B` |
| `jnbe` | `A <= B` | `A > B`  |
| `jng`  | `A > B`  | `A <= B` |
| `jnge` | `A >= B` | `A < B`  |
| `jnl`  | `A < B`  | `A >= B` |
| `jnle` | `A <= B` | `A > B`  |
| `jnz`  | `A == B` | `A != B` |
| `jz`   | `A != B` | `A == B` |