reference.md

Quick reference

Assign a value to a register

register = value

example:

eax = 2

Shorthand for using the same register as the platform can offer (16/32/64-bit)

a = 2

This is translated into "mov eax, 2", for 32-bit x86.

Declare a function

fun name

example:

fun hello_world

example:

fun hello
    eax = 2
    ret(0)

Return from a function

ret [retval]

example:

ret(1)

example:

ret

Declare a constant

const name = constant

The given value can be a string, comma-separated list of values or a mix of both.

Built in functions

len(name)

Represents the length of a constant, by the given name

Comparison starts an if block

x = 2
write(message)

Operators

The parentheses contains a short explanation and not part of the examples.

Examples:

a += 2  (addition)
a -= 2  (subtraction)
a /= 2  (division - translated to shl/shr when possible)
a *= 2  (multiplication - translated to shl/shr when possible)
a |= 2  (or)
a &= 2  (and)
a ^= 2  (xor)
a <<< 2 (rol - rotate bits left)
a >>> 2 (ror - rotate bits right)

Memory access

a += [di+321]

Stack

ds -> stack     (push ds)
stack -> es     (pop es)
ds -> es        (push ds, then pop es)