#!/bin/sh

  # SPDX-License-Identifier: GPL-2.0

  # A script to dump mixed source code & assembly
  # with correct relocations from System.map

  # Requires the following lines in makefile:

  #%.lst: %.c

  #	$(CC) $(c_flags) -g -c -o $*.o $< &&
  #	$(srctree)/scripts/makelst $*.o System.map $(OBJDUMP) > $@

  #

  # Copyright (C) 2000 IBM Corporation
  # Author(s): DJ Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
  #            William Stearns <wstearns@pobox.com>

  #

  # awk style field access
  field() {
    shift $1 ; echo $1
  }
  
  t1=`$3 --syms $1 | grep .text | grep -m1 " F "`

  if [ -n "$t1" ]; then

    t2=`field 6 $t1`

    if [ ! -r $2 ]; then
      echo "No System.map" >&2

    else
      t3=`grep $t2 $2`

      t4=`field 1 $t3`
      t5=`field 1 $t1`
      t6=`printf "%lu" $((0x$t4 - 0x$t5))`

    fi

  fi

  $3 -r --source --adjust-vma=${t6:-0} $1