1/* Test program for dwarf_getscopes.
2   Copyright (C) 2005 Red Hat, Inc.
3   This file is part of Red Hat elfutils.
4
5   Red Hat elfutils is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by the
7   Free Software Foundation; version 2 of the License.
8
9   Red Hat elfutils is distributed in the hope that it will be useful, but
10   WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   General Public License for more details.
13
14   You should have received a copy of the GNU General Public License along
15   with Red Hat elfutils; if not, write to the Free Software Foundation,
16   Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
17
18   Red Hat elfutils is an included package of the Open Invention Network.
19   An included package of the Open Invention Network is a package for which
20   Open Invention Network licensees cross-license their patents.  No patent
21   license is granted, either expressly or impliedly, by designation as an
22   included package.  Should you wish to participate in the Open Invention
23   Network licensing program, please visit www.openinventionnetwork.com
24   <http://www.openinventionnetwork.com>.  */
25
26#include <config.h>
27#include <assert.h>
28#include <inttypes.h>
29#include ELFUTILS_HEADER(dwfl)
30#include <dwarf.h>
31#include <argp.h>
32#include <stdio.h>
33#include <stdio_ext.h>
34#include <locale.h>
35#include <stdlib.h>
36#include <error.h>
37#include <string.h>
38#include <fnmatch.h>
39
40
41static void
42paddr (const char *prefix, Dwarf_Addr addr, Dwfl_Line *line)
43{
44  const char *src;
45  int lineno, linecol;
46  if (line != NULL
47      && (src = dwfl_lineinfo (line, &addr, &lineno, &linecol,
48			       NULL, NULL)) != NULL)
49    {
50      if (linecol != 0)
51	printf ("%s%#" PRIx64 " (%s:%d:%d)",
52		prefix, addr, src, lineno, linecol);
53      else
54	printf ("%s%#" PRIx64 " (%s:%d)",
55		prefix, addr, src, lineno);
56    }
57  else
58    printf ("%s%#" PRIx64, prefix, addr);
59}
60
61
62static void
63print_vars (unsigned int indent, Dwarf_Die *die)
64{
65  Dwarf_Die child;
66  if (dwarf_child (die, &child) == 0)
67    do
68      switch (dwarf_tag (&child))
69	{
70	case DW_TAG_variable:
71	case DW_TAG_formal_parameter:
72	  printf ("%*s%-30s[%6" PRIx64 "]\n", indent, "",
73		  dwarf_diename (&child),
74		  (uint64_t) dwarf_dieoffset (&child));
75	  break;
76	default:
77	  break;
78	}
79    while (dwarf_siblingof (&child, &child) == 0);
80
81  Dwarf_Attribute attr_mem;
82  Dwarf_Die origin;
83  if (dwarf_hasattr (die, DW_AT_abstract_origin)
84      && dwarf_formref_die (dwarf_attr (die, DW_AT_abstract_origin, &attr_mem),
85			    &origin) != NULL
86      && dwarf_child (&origin, &child) == 0)
87    do
88      switch (dwarf_tag (&child))
89	{
90	case DW_TAG_variable:
91	case DW_TAG_formal_parameter:
92	  printf ("%*s%s (abstract)\n", indent, "",
93		  dwarf_diename (&child));
94	  break;
95	default:
96	  break;
97	}
98    while (dwarf_siblingof (&child, &child) == 0);
99}
100
101
102#define INDENT 4
103
104struct args
105{
106  Dwfl *dwfl;
107  Dwarf_Die *cu;
108  Dwarf_Addr dwbias;
109  char **argv;
110};
111
112static int
113handle_function (Dwarf_Die *funcdie, void *arg)
114{
115  struct args *a = arg;
116
117  const char *name = dwarf_diename (funcdie);
118  char **argv = a->argv;
119  if (argv[0] != NULL)
120    {
121      bool match;
122      do
123	match = fnmatch (*argv, name, 0) == 0;
124      while (!match && *++argv);
125      if (!match)
126	return 0;
127    }
128
129  Dwarf_Die *scopes;
130  int n = dwarf_getscopes_die (funcdie, &scopes);
131  if (n <= 0)
132    error (EXIT_FAILURE, 0, "dwarf_getscopes_die: %s", dwarf_errmsg (-1));
133  else
134    {
135      Dwarf_Addr start, end;
136      const char *fname;
137      const char *modname = dwfl_module_info (dwfl_cumodule (a->cu), NULL,
138					      &start, &end,
139					      NULL, NULL,
140					      &fname, NULL);
141      if (modname == NULL)
142	error (EXIT_FAILURE, 0, "dwfl_module_info: %s", dwarf_errmsg (-1));
143      if (modname[0] == '\0')
144	modname = fname;
145      printf ("%s: %#" PRIx64 " .. %#" PRIx64 "\n", modname, start, end);
146
147      unsigned int indent = 0;
148      while (n-- > 0)
149	{
150	  Dwarf_Die *const die = &scopes[n];
151
152	  indent += INDENT;
153	  printf ("%*s%s (%#x)", indent, "",
154		  dwarf_diename (die) ?: "<unnamed>",
155		  dwarf_tag (die));
156
157	  Dwarf_Addr lowpc, highpc;
158	  if (dwarf_lowpc (die, &lowpc) == 0
159	      && dwarf_highpc (die, &highpc) == 0)
160	    {
161	      lowpc += a->dwbias;
162	      highpc += a->dwbias;
163	      Dwfl_Line *loline = dwfl_getsrc (a->dwfl, lowpc);
164	      Dwfl_Line *hiline = dwfl_getsrc (a->dwfl, highpc);
165	      paddr (": ", lowpc, loline);
166	      if (highpc != lowpc)
167		paddr (" .. ", lowpc, hiline == loline ? NULL : hiline);
168	    }
169	  puts ("");
170
171	  print_vars (indent + INDENT, die);
172	}
173    }
174
175  return 0;
176}
177
178
179int
180main (int argc, char *argv[])
181{
182  int remaining;
183
184  /* Set locale.  */
185  (void) setlocale (LC_ALL, "");
186
187  struct args a = { .dwfl = NULL, .cu = NULL };
188
189  (void) argp_parse (dwfl_standard_argp (), argc, argv, 0, &remaining,
190		     &a.dwfl);
191  assert (a.dwfl != NULL);
192  a.argv = &argv[remaining];
193
194  int result = 0;
195
196  while ((a.cu = dwfl_nextcu (a.dwfl, a.cu, &a.dwbias)) != NULL)
197    dwarf_getfuncs (a.cu, &handle_function, &a, 0);
198
199  dwfl_end (a.dwfl);
200
201  return result;
202}
203