scripts/makelst

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # A script to dump mixed source code & assembly
   4 # with correct relocations from System.map
   5 # Requires the following lines in makefile:
   6 #%.lst: %.c
   7 #       $(CC) $(c_flags) -g -c -o $*.o $< &&
   8 #       $(srctree)/scripts/makelst $*.o System.map $(OBJDUMP) > $@
   9 #
  10 # Copyright (C) 2000 IBM Corporation
  11 # Author(s): DJ Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
  12 #            William Stearns <wstearns@pobox.com>
  13 #
  14
  15 # awk style field access
  16 field() {
  17   shift $1 ; echo $1
  18 }
  19
  20 t1=`$3 --syms $1 | grep .text | grep -m1 " F "`
  21 if [ -n "$t1" ]; then
  22   t2=`field 6 $t1`
  23   if [ ! -r $2 ]; then
  24     echo "No System.map" >&2
  25   else
  26     t3=`grep $t2 $2`
  27     t4=`field 1 $t3`
  28     t5=`field 1 $t1`
  29     t6=`printf "%lu" $((0x$t4 - 0x$t5))`
  30   fi
  31 fi
  32 $3 -r --source --adjust-vma=${t6:-0} $1