x86_instructions

"/home/yossef/notes/courses/lowLevel/x86_instructions.md"

path: courses/lowLevel/x86_instructions.md

- **fileName**: x86_instructions
- **Created on**: 2025-02-13 19:49:13

instruciton for x86

Opcode Instruction Description
LEA Load Effective Address Loads the address of a variable into a register.
IMM Immediate Value Loads an immediate (constant) value into a register.
JMP Jump Unconditionally jumps to a specified address.
CALL Call Function Calls a function (pushes return address onto the stack).
JZ Jump if Zero Jumps if the zero flag is set (if result is zero).
JNZ Jump if Not Zero Jumps if the zero flag is not set (if result is nonzero).
ENT Enter Function Adjusts the stack pointer to allocate space for local variables.
ADJ Adjust Stack Adjusts the stack pointer (used for function arguments).
LEV Leave Function Restores stack frame and returns from a function.
LI Load Integer Loads an integer from memory into a register.
LC Load Character Loads a single byte (char) from memory into a register.
SI Store Integer Stores an integer from a register into memory.
SC Store Character Stores a single byte (char) from a register into memory.
PUSH Push to Stack Pushes a value onto the stack.
OR Bitwise OR Performs a bitwise OR operation.
XOR Bitwise XOR Performs a bitwise XOR operation.
AND Bitwise AND Performs a bitwise AND operation.
EQ Equal Checks if two values are equal.
NE Not Equal Checks if two values are not equal.
LT Less Than Checks if one value is less than another.
GT Greater Than Checks if one value is greater than another.
LE Less or Equal Checks if one value is less than or equal to another.
GE Greater or Equal Checks if one value is greater than or equal to another.
SHL Shift Left Performs a left bit shift operation.
SHR Shift Right Performs a right bit shift operation.
ADD Addition Adds two values together.
SUB Subtraction Subtracts one value from another.
MUL Multiplication Multiplies two values together.
DIV Division Divides one value by another.
MOD Modulus Finds the remainder after division.
OPEN Open File Opens a file and returns a file descriptor.
READ Read File Reads data from a file.
CLOS Close File Closes a file descriptor.
PRTF Print Formatted Prints a formatted string (like printf).
MALC Allocate Memory Allocates a block of memory (malloc).
MSET Memory Set Sets memory to a specified value (memset).
MCMP Memory Compare Compares two memory blocks (memcmp).
EXIT Exit Program Exits the program.

continue:./ascii_table.md
before:./binary-convert.md