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
16field() {
17  shift $1 ; echo $1
18}
19
20t1=`$3 --syms $1 | grep .text | grep -m1 " F "`
21if [ -n "$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
31fi
32$3 -r --source --adjust-vma=${t6:-0} $1
33