xref: /linux/scripts/makelst (revision 7aacf86b75bc5523d20fd9127104384fce51ce9c)
1#!/bin/sh
2# A script to dump mixed source code & assembly
3# with correct relocations from System.map
4# Requires the following lines in makefile:
5#%.lst: %.c
6#	$(CC) $(c_flags) -g -c -o $*.o $< &&
7#	$(srctree)/scripts/makelst $*.o System.map $(OBJDUMP) > $@
8#
9# Copyright (C) 2000 IBM Corporation
10# Author(s): DJ Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
11#            William Stearns <wstearns@pobox.com>
12#
13
14# awk style field access
15field() {
16  shift $1 ; echo $1
17}
18
19t1=`$3 --syms $1 | grep .text | grep -m1 " F "`
20if [ -n "$t1" ]; then
21  t2=`field 6 $t1`
22  if [ ! -r $2 ]; then
23    echo "No System.map" >&2
24  else
25    t3=`grep $t2 $2`
26    t4=`field 1 $t3`
27    t5=`field 1 $t1`
28    t6=`printf "%lu" $((0x$t4 - 0x$t5))`
29  fi
30fi
31$3 -r --source --adjust-vma=${t6:-0} $1
32