1/* Shared library support for RS/6000 (xcoff) object files, for GDB.
2   Copyright (C) 1991, 1992, 1995, 1996, 1999, 2000, 2001, 2007
3   Free Software Foundation, Inc.
4   Contributed by IBM Corporation.
5
6   This file is part of GDB.
7
8   This program is free software; you can redistribute it and/or modify
9   it under the terms of the GNU General Public License as published by
10   the Free Software Foundation; either version 3 of the License, or
11   (at your option) any later version.
12
13   This program is distributed in the hope that it will be useful,
14   but WITHOUT ANY WARRANTY; without even the implied warranty of
15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16   GNU General Public License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
20
21#include "defs.h"
22#include "bfd.h"
23#include "xcoffsolib.h"
24#include "inferior.h"
25#include "gdbcmd.h"
26#include "symfile.h"
27#include "frame.h"
28#include "gdb_regex.h"
29
30
31/* If ADDR lies in a shared library, return its name.
32   Note that returned name points to static data whose content is overwritten
33   by each call.  */
34
35char *
36xcoff_solib_address (CORE_ADDR addr)
37{
38  static char *buffer = NULL;
39  struct vmap *vp = vmap;
40
41  /* The first vmap entry is for the exec file.  */
42
43  if (vp == NULL)
44    return NULL;
45  for (vp = vp->nxt; vp; vp = vp->nxt)
46    if (vp->tstart <= addr && addr < vp->tend)
47      {
48	xfree (buffer);
49	buffer = xstrprintf ("%s%s%s%s",
50			     vp->name,
51			     *vp->member ? "(" : "",
52			     vp->member,
53			     *vp->member ? ")" : "");
54	return buffer;
55      }
56  return NULL;
57}
58
59static void solib_info (char *, int);
60static void sharedlibrary_command (char *pattern, int from_tty);
61
62static void
63solib_info (char *args, int from_tty)
64{
65  struct vmap *vp = vmap;
66
67  /* Check for new shared libraries loaded with load ().  */
68  if (! ptid_equal (inferior_ptid, null_ptid))
69    xcoff_relocate_symtab (PIDGET (inferior_ptid));
70
71  if (vp == NULL || vp->nxt == NULL)
72    {
73      printf_unfiltered ("No shared libraries loaded at this time.\n");
74      return;
75    }
76
77  /* Skip over the first vmap, it is the main program, always loaded.  */
78  vp = vp->nxt;
79
80  printf_unfiltered ("\
81Text Range		Data Range		Syms	Shared Object Library\n");
82
83  for (; vp != NULL; vp = vp->nxt)
84    {
85      printf_unfiltered ("0x%s-0x%s	0x%s-0x%s	%s	%s%s%s%s\n",
86			 paddr (vp->tstart),paddr (vp->tend),
87			 paddr (vp->dstart), paddr (vp->dend),
88			 vp->loaded ? "Yes" : "No ",
89			 vp->name,
90			 *vp->member ? "(" : "",
91			 vp->member,
92			 *vp->member ? ")" : "");
93    }
94}
95
96static void
97sharedlibrary_command (char *pattern, int from_tty)
98{
99  dont_repeat ();
100
101  /* Check for new shared libraries loaded with load ().  */
102  if (! ptid_equal (inferior_ptid, null_ptid))
103    xcoff_relocate_symtab (PIDGET (inferior_ptid));
104
105  if (pattern)
106    {
107      char *re_err = re_comp (pattern);
108
109      if (re_err)
110	error (_("Invalid regexp: %s"), re_err);
111    }
112
113  /* Walk the list of currently loaded shared libraries, and read
114     symbols for any that match the pattern --- or any whose symbols
115     aren't already loaded, if no pattern was given.  */
116  {
117    int any_matches = 0;
118    int loaded_any_symbols = 0;
119    struct vmap *vp = vmap;
120
121    if (!vp)
122      return;
123
124    /* skip over the first vmap, it is the main program, always loaded. */
125    for (vp = vp->nxt; vp; vp = vp->nxt)
126      if (! pattern
127	    || re_exec (vp->name)
128	    || (*vp->member && re_exec (vp->member)))
129	{
130	  any_matches = 1;
131
132	  if (vp->loaded)
133	    {
134	      if (from_tty)
135		printf_unfiltered ("Symbols already loaded for %s\n",
136				   vp->name);
137	    }
138	  else
139	    {
140	      if (vmap_add_symbols (vp))
141		loaded_any_symbols = 1;
142	    }
143	}
144
145    if (from_tty && pattern && ! any_matches)
146      printf_unfiltered
147	("No loaded shared libraries match the pattern `%s'.\n", pattern);
148
149    if (loaded_any_symbols)
150      {
151	/* Getting new symbols may change our opinion about what is
152	   frameless.  */
153	reinit_frame_cache ();
154      }
155  }
156}
157
158void
159_initialize_xcoffsolib (void)
160{
161  add_com ("sharedlibrary", class_files, sharedlibrary_command,
162	   _("Load shared object library symbols for files matching REGEXP."));
163  add_info ("sharedlibrary", solib_info,
164	    _("Status of loaded shared object libraries"));
165
166  add_setshow_boolean_cmd ("auto-solib-add", class_support,
167			   &auto_solib_add, _("\
168Set autoloading of shared library symbols."), _("\
169Show autoloading of shared library symbols."), _("\
170If \"on\", symbols from all shared object libraries will be loaded\n\
171automatically when the inferior begins execution, when the dynamic linker\n\
172informs gdb that a new library has been loaded, or when attaching to the\n\
173inferior.  Otherwise, symbols must be loaded manually, using `sharedlibrary'."),
174			   NULL,
175			   NULL, /* FIXME: i18n: */
176			   &setlist, &showlist);
177}
178