1/* Test program for dwarf_getscopes.
2   Copyright (C) 2005 Red Hat, Inc.
3   This file is part of elfutils.
4
5   This file is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by
7   the Free Software Foundation; either version 3 of the License, or
8   (at your option) any later version.
9
10   elfutils is distributed in the hope that it will be useful, but
11   WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   GNU General Public License for more details.
14
15   You should have received a copy of the GNU General Public License
16   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
17
18#include <config.h>
19#include <assert.h>
20#include <inttypes.h>
21#include ELFUTILS_HEADER(dwfl)
22#include <dwarf.h>
23#include <argp.h>
24#include <stdio.h>
25#include <stdio_ext.h>
26#include <locale.h>
27#include <stdlib.h>
28#include <error.h>
29#include <string.h>
30
31
32static void
33paddr (const char *prefix, Dwarf_Addr addr, Dwfl_Line *line)
34{
35  const char *src;
36  int lineno, linecol;
37  if (line != NULL
38      && (src = dwfl_lineinfo (line, &addr, &lineno, &linecol,
39			       NULL, NULL)) != NULL)
40    {
41      if (linecol != 0)
42	printf ("%s%#" PRIx64 " (%s:%d:%d)",
43		prefix, addr, src, lineno, linecol);
44      else
45	printf ("%s%#" PRIx64 " (%s:%d)",
46		prefix, addr, src, lineno);
47    }
48  else
49    printf ("%s%#" PRIx64, prefix, addr);
50}
51
52static void
53print_vars (unsigned int indent, Dwarf_Die *die)
54{
55  Dwarf_Die child;
56  if (dwarf_child (die, &child) == 0)
57    do
58      switch (dwarf_tag (&child))
59	{
60	case DW_TAG_variable:
61	case DW_TAG_formal_parameter:
62	  printf ("%*s%-30s[%6" PRIx64 "]\n", indent, "",
63		  dwarf_diename (&child),
64		  (uint64_t) dwarf_dieoffset (&child));
65	  break;
66	default:
67	  break;
68	}
69    while (dwarf_siblingof (&child, &child) == 0);
70
71  Dwarf_Attribute attr_mem;
72  Dwarf_Die origin;
73  if (dwarf_hasattr (die, DW_AT_abstract_origin)
74      && dwarf_formref_die (dwarf_attr (die, DW_AT_abstract_origin, &attr_mem),
75			    &origin) != NULL
76      && dwarf_child (&origin, &child) == 0)
77    do
78      switch (dwarf_tag (&child))
79	{
80	case DW_TAG_variable:
81	case DW_TAG_formal_parameter:
82	  printf ("%*s%s (abstract)\n", indent, "",
83		  dwarf_diename (&child));
84	  break;
85	default:
86	  break;
87	}
88    while (dwarf_siblingof (&child, &child) == 0);
89}
90
91
92#define INDENT 4
93
94static void
95handle_address (GElf_Addr pc, Dwfl *dwfl)
96{
97  Dwarf_Addr cubias;
98  Dwarf_Die *cudie = dwfl_addrdie (dwfl, pc, &cubias);
99  if (cudie == NULL)
100    error (EXIT_FAILURE, 0, "dwfl_addrdie: %s", dwfl_errmsg (-1));
101
102  Dwarf_Die *scopes;
103  int n = dwarf_getscopes (cudie, pc - cubias, &scopes);
104  if (n < 0)
105    error (EXIT_FAILURE, 0, "dwarf_getscopes: %s", dwarf_errmsg (-1));
106  else if (n == 0)
107    printf ("%#" PRIx64 ": not in any scope\n", pc);
108  else
109    {
110      printf ("%#" PRIx64 ":\n", pc);
111      unsigned int indent = 0;
112      while (n-- > 0)
113	{
114	  Dwarf_Die *const die = &scopes[n];
115
116	  indent += INDENT;
117	  printf ("%*s%s (%#x)", indent, "",
118		  dwarf_diename (die) ?: "<unnamed>",
119		  dwarf_tag (die));
120
121	  Dwarf_Addr lowpc, highpc;
122	  if (dwarf_lowpc (die, &lowpc) == 0
123	      && dwarf_highpc (die, &highpc) == 0)
124	    {
125	      lowpc += cubias;
126	      highpc += cubias;
127	      Dwfl_Line *loline = dwfl_getsrc (dwfl, lowpc);
128	      Dwfl_Line *hiline = dwfl_getsrc (dwfl, highpc);
129	      paddr (": ", lowpc, loline);
130	      if (highpc != lowpc)
131		paddr (" .. ", lowpc, hiline == loline ? NULL : hiline);
132	    }
133	  puts ("");
134
135	  print_vars (indent + INDENT, die);
136	}
137    }
138}
139
140int
141main (int argc, char *argv[])
142{
143  int remaining;
144
145  /* Set locale.  */
146  (void) setlocale (LC_ALL, "");
147
148  Dwfl *dwfl = NULL;
149  (void) argp_parse (dwfl_standard_argp (), argc, argv, 0, &remaining, &dwfl);
150  assert (dwfl != NULL);
151
152  int result = 0;
153
154  /* Now handle the addresses.  In case none are given on the command
155     line, read from stdin.  */
156  if (remaining == argc)
157    {
158      /* We use no threads here which can interfere with handling a stream.  */
159      (void) __fsetlocking (stdin, FSETLOCKING_BYCALLER);
160
161      char *buf = NULL;
162      size_t len = 0;
163      while (!feof_unlocked (stdin))
164	{
165	  if (getline (&buf, &len, stdin) < 0)
166	    break;
167
168	  char *endp;
169	  uintmax_t addr = strtoumax (buf, &endp, 0);
170	  if (endp != buf)
171	    handle_address (addr, dwfl);
172	  else
173	    result = 1;
174	}
175
176      free (buf);
177    }
178  else
179    {
180      do
181	{
182	  char *endp;
183	  uintmax_t addr = strtoumax (argv[remaining], &endp, 0);
184	  if (endp != argv[remaining])
185	    handle_address (addr, dwfl);
186	  else
187	    result = 1;
188	}
189      while (++remaining < argc);
190    }
191
192  dwfl_end (dwfl);
193
194  return result;
195}
196