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Difference between revisions of "Assembly"
From NetSec
| Line 1: | Line 1: | ||
| + | |||
| + | == Introduction == | ||
* assembler | * assembler | ||
* linker | * linker | ||
| + | |||
| + | * Assemble-time: Assembly & operands -> Opcode Sequence | ||
| + | * Link-time: Flat binary of opcode sequence -> executable file format for OS | ||
| + | * Runtime: Opcode Sequence -> hardware gates (may interact with ram etc) | ||
| − | + | == Binary == | |
* counting | * counting | ||
| + | * endianness | ||
* nybble | * nybble | ||
* byte | * byte | ||
| Line 13: | Line 20: | ||
| − | + | == Number handling == | |
* signed | * signed | ||
| Line 20: | Line 27: | ||
| − | + | == Data storage == | |
* register | * register | ||
| Line 29: | Line 36: | ||
| − | + | == Memory Addressing == | |
* stack pointer | * stack pointer | ||
| Line 38: | Line 45: | ||
| − | + | == Instructions == | |
| − | + | === Syntaxes === | |
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
* Intel (dest, src) | * Intel (dest, src) | ||
| Line 52: | Line 53: | ||
| − | + | === Data manipulation basic primitives === | |
* mov | * mov | ||
| Line 59: | Line 60: | ||
| − | + | === Basic arithmetic === | |
* add | * add | ||
| Line 67: | Line 68: | ||
| − | + | === Bitwise mathematics operators === | |
| − | + | ||
* and | * and | ||
* not | * not | ||
| Line 74: | Line 74: | ||
* xor | * xor | ||
| − | + | === Shifts and rotations === | |
* shl | * shl | ||
* shr | * shr | ||
| Line 80: | Line 80: | ||
* ror | * ror | ||
| − | + | === Control flow operators === | |
| − | + | ||
| − | + | ||
* cmp | * cmp | ||
* jmp | * jmp | ||
| Line 88: | Line 86: | ||
* ret | * ret | ||
| − | + | === Taking it further === | |
* kernel interrupt | * kernel interrupt | ||
* architecture | * architecture | ||
* operating system | * operating system | ||
Revision as of 17:26, 10 May 2012
Contents
Introduction
- assembler
- linker
- Assemble-time: Assembly & operands -> Opcode Sequence
- Link-time: Flat binary of opcode sequence -> executable file format for OS
- Runtime: Opcode Sequence -> hardware gates (may interact with ram etc)
Binary
- counting
- endianness
- nybble
- byte
- word
- dword
- qword
Number handling
- signed
- unsigned
- 2's compliment
Data storage
- register
- pointer
- sub-register
- cpu flag registers
- architecture-specific registers
Memory Addressing
- stack pointer
- instruction pointer
- base pointer
- addressing mode
- index
Instructions
Syntaxes
- Intel (dest, src)
- ATT (src, dest)
Data manipulation basic primitives
- mov
- push
- pop
Basic arithmetic
- add
- sub
- div
- mul
Bitwise mathematics operators
- and
- not
- or
- xor
Shifts and rotations
- shl
- shr
- rol
- ror
Control flow operators
- cmp
- jmp
- call
- ret
Taking it further
- kernel interrupt
- architecture
- operating system
