NAME

       rasm — Radare patch assembler

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

SEE ALSO

       radiff(1), hasher(1), radare(1), radarerc(5), rabin(1), rfile(1), xc(1), rsc(1), rasc(1), xrefs(1)

AUTHORS

       pancake <@youterm.com>

Debian                                            May 30, 2008                                           RASM(1)