SYNOPSIS

rasm [-elvV] [-f file] [-d bytes] [-s offset] [-a arch] [opcode]

DESCRIPTION

Instruction assembler for multiple architectures for easily and fast writing patch opcodes

You can get the list of the supported opcodes with the '-l' flag.

-v

Enable debug output

-f file

Compile assembly output from file

-d bytes

Disasemble bytes

-e

Use big endian

-s offset

Setup an offset to change the base address for the relative jumps

-a arch

Set a different architecture (x86, ppc, arm, java)

-h

Show usage help message.

OPCODES

call [addr]

call to address

jmp [addr]

perform a relative or absolute jump

jz [addr]

conditional jump (jump if result is zero)

jnz [addr]

conditional jump (jump if result is not zero)

trap

Trap instruction (breakpoint)

nop

Nop instruction

push [arg]

Push a number or register into the stack

pop [arg]

Pop a value from stack and store it in register arg

int [num]

Call the kernel using an interrupt or syscall

ret

return from subroutine

ret0

return 0 from subroutine

hang

perform an infinite loop (hang on)

mov [dst], [src]

moves an inmediate to a register

AUTHORS

pancake <@youterm.com>