tools/disassemble_inc.sh

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0-or-later
   3
   4 # Simple script to disassemble a file .inc generated by
   5 # src/helper/bin2char.sh
   6 # Can be useful to check the correctness of the file .inc
   7 #
   8 # By default it decodes ARM thumb little-endian, e.g. cortex-m.
   9 # Set CROSS_COMPILE for other toolchains.
  10 # Set OBJDUMP_FLAGS for different objdump flags.
  11 #
  12 # Usage:
  13 #   contrib/loaders/disassemble_inc.sh file.inc
  14
  15 default_CROSS_COMPILE="arm-none-eabi-"
  16 default_OBJDUMP_FLAGS="-m arm -EL -M force-thumb"
  17
  18 if [ $# != 1 -o ! -f "$1" ]; then
  19         echo "Usage:"
  20         echo "    $0 path/to/file.inc"
  21         echo ""
  22         echo "Set CROSS_COMPILE and/or OBJDUMP_FLAGS to override current default:"
  23         echo "    export CROSS_COMPILE=\"${default_CROSS_COMPILE}\""
  24         echo "    export OBJDUMP_FLAGS=\"${default_OBJDUMP_FLAGS}\""
  25         exit 1
  26 fi
  27
  28 if [ -z "${CROSS_COMPILE}" ]; then
  29         CROSS_COMPILE="${default_CROSS_COMPILE}"
  30 fi
  31
  32 if [ -z "${OBJDUMP_FLAGS}" ]; then
  33         OBJDUMP_FLAGS="${default_OBJDUMP_FLAGS}"
  34 fi
  35
  36 perl -v > /dev/null 2>&1
  37 if [ $? != 0 ]; then
  38         echo "Error: 'perl' interpreter not available."
  39         exit 1
  40 fi
  41
  42 tmpfile=$(mktemp --suffix=.bin)
  43
  44 echo "Disassemble $1:"
  45 echo "${CROSS_COMPILE}objdump ${OBJDUMP_FLAGS} -b binary -D ${tmpfile}"
  46
  47 perl -e 'while (<>){while ($_=~/(0x..)/g){print chr(hex($1));}}' $1 > ${tmpfile}
  48 ${CROSS_COMPILE}objdump ${OBJDUMP_FLAGS} -b binary -D ${tmpfile}
  49
  50 rm ${tmpfile}