dbda997201
* utils.c: Use "", instead of <>, to include readline. tui/tui-win.c, tui/tui.c, tui/tui-hooks.c: Ditto. * tracepoint.c, top.c, symmisc.c, symfile.c: Ditto. * source.c, solib.c, exec.c, event-top.c: Ditto. * corelow.c, completer.c, cli/cli-setshow.c: Ditto. * cli/cli-dump.c, cli/cli-cmds.c: Ditto. * Makefile.in: Update all dependencies. (readline_tilde_h, readline_history_h): Define. (readline_headers): Delete.
913 lines
26 KiB
C
913 lines
26 KiB
C
/* Handle shared libraries for GDB, the GNU Debugger.
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Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
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1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include <sys/types.h>
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#include <fcntl.h>
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#include "gdb_string.h"
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#include "symtab.h"
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#include "bfd.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "gdbcore.h"
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#include "command.h"
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#include "target.h"
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#include "frame.h"
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#include "gdb_regex.h"
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#include "inferior.h"
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#include "environ.h"
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#include "language.h"
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#include "gdbcmd.h"
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#include "completer.h"
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#include "filenames.h" /* for DOSish file names */
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#include "exec.h"
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#include "solist.h"
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#include "readline/readline.h"
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/* external data declarations */
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/* FIXME: gdbarch needs to control this variable */
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struct target_so_ops *current_target_so_ops;
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/* local data declarations */
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static struct so_list *so_list_head; /* List of known shared objects */
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static int solib_cleanup_queued = 0; /* make_run_cleanup called */
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/* Local function prototypes */
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static void do_clear_solib (void *);
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/* If non-zero, this is a prefix that will be added to the front of the name
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shared libraries with an absolute filename for loading. */
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static char *solib_absolute_prefix = NULL;
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/* If non-empty, this is a search path for loading non-absolute shared library
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symbol files. This takes precedence over the environment variables PATH
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and LD_LIBRARY_PATH. */
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static char *solib_search_path = NULL;
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/*
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GLOBAL FUNCTION
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solib_open -- Find a shared library file and open it.
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SYNOPSIS
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int solib_open (char *in_patname, char **found_pathname);
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DESCRIPTION
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Global variable SOLIB_ABSOLUTE_PREFIX is used as a prefix directory
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to search for shared libraries if they have an absolute path.
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Global variable SOLIB_SEARCH_PATH is used as a prefix directory
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(or set of directories, as in LD_LIBRARY_PATH) to search for all
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shared libraries if not found in SOLIB_ABSOLUTE_PREFIX.
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Search algorithm:
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* If there is a solib_absolute_prefix and path is absolute:
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* Search for solib_absolute_prefix/path.
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* else
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* Look for it literally (unmodified).
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* Look in SOLIB_SEARCH_PATH.
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* If available, use target defined search function.
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* If solib_absolute_prefix is NOT set, perform the following two searches:
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* Look in inferior's $PATH.
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* Look in inferior's $LD_LIBRARY_PATH.
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*
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* The last check avoids doing this search when targetting remote
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* machines since solib_absolute_prefix will almost always be set.
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RETURNS
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file handle for opened solib, or -1 for failure. */
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int
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solib_open (char *in_pathname, char **found_pathname)
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{
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int found_file = -1;
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char *temp_pathname = NULL;
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char *p = in_pathname;
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while (*p && !IS_DIR_SEPARATOR (*p))
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p++;
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if (*p)
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{
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if (! IS_ABSOLUTE_PATH (in_pathname) || solib_absolute_prefix == NULL)
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temp_pathname = in_pathname;
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else
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{
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int prefix_len = strlen (solib_absolute_prefix);
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/* Remove trailing slashes from absolute prefix. */
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while (prefix_len > 0
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&& IS_DIR_SEPARATOR (solib_absolute_prefix[prefix_len - 1]))
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prefix_len--;
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/* Cat the prefixed pathname together. */
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temp_pathname = alloca (prefix_len + strlen (in_pathname) + 1);
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strncpy (temp_pathname, solib_absolute_prefix, prefix_len);
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temp_pathname[prefix_len] = '\0';
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strcat (temp_pathname, in_pathname);
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}
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/* Now see if we can open it. */
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found_file = open (temp_pathname, O_RDONLY, 0);
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}
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/* If the search in solib_absolute_prefix failed, and the path name is
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absolute at this point, make it relative. (openp will try and open the
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file according to its absolute path otherwise, which is not what we want.)
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Affects subsequent searches for this solib. */
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if (found_file < 0 && IS_ABSOLUTE_PATH (in_pathname))
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{
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/* First, get rid of any drive letters etc. */
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while (!IS_DIR_SEPARATOR (*in_pathname))
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in_pathname++;
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/* Next, get rid of all leading dir separators. */
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while (IS_DIR_SEPARATOR (*in_pathname))
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in_pathname++;
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}
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/* If not found, search the solib_search_path (if any). */
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if (found_file < 0 && solib_search_path != NULL)
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found_file = openp (solib_search_path,
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1, in_pathname, O_RDONLY, 0, &temp_pathname);
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/* If not found, next search the solib_search_path (if any) for the basename
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only (ignoring the path). This is to allow reading solibs from a path
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that differs from the opened path. */
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if (found_file < 0 && solib_search_path != NULL)
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found_file = openp (solib_search_path,
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1, lbasename (in_pathname), O_RDONLY, 0,
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&temp_pathname);
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/* If not found, try to use target supplied solib search method */
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if (found_file < 0 && TARGET_SO_FIND_AND_OPEN_SOLIB != NULL)
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found_file = TARGET_SO_FIND_AND_OPEN_SOLIB
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(in_pathname, O_RDONLY, &temp_pathname);
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/* If not found, next search the inferior's $PATH environment variable. */
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if (found_file < 0 && solib_absolute_prefix == NULL)
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found_file = openp (get_in_environ (inferior_environ, "PATH"),
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1, in_pathname, O_RDONLY, 0, &temp_pathname);
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/* If not found, next search the inferior's $LD_LIBRARY_PATH
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environment variable. */
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if (found_file < 0 && solib_absolute_prefix == NULL)
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found_file = openp (get_in_environ (inferior_environ, "LD_LIBRARY_PATH"),
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1, in_pathname, O_RDONLY, 0, &temp_pathname);
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/* Done. If not found, tough luck. Return found_file and
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(optionally) found_pathname. */
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if (found_pathname != NULL && temp_pathname != NULL)
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*found_pathname = xstrdup (temp_pathname);
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return found_file;
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}
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/*
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LOCAL FUNCTION
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solib_map_sections -- open bfd and build sections for shared lib
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SYNOPSIS
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static int solib_map_sections (struct so_list *so)
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DESCRIPTION
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Given a pointer to one of the shared objects in our list
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of mapped objects, use the recorded name to open a bfd
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descriptor for the object, build a section table, and then
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relocate all the section addresses by the base address at
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which the shared object was mapped.
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FIXMES
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In most (all?) cases the shared object file name recorded in the
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dynamic linkage tables will be a fully qualified pathname. For
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cases where it isn't, do we really mimic the systems search
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mechanism correctly in the below code (particularly the tilde
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expansion stuff?).
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*/
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static int
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solib_map_sections (void *arg)
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{
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struct so_list *so = (struct so_list *) arg; /* catch_errors bogon */
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char *filename;
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char *scratch_pathname;
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int scratch_chan;
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struct section_table *p;
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struct cleanup *old_chain;
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bfd *abfd;
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filename = tilde_expand (so->so_name);
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old_chain = make_cleanup (xfree, filename);
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scratch_chan = solib_open (filename, &scratch_pathname);
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if (scratch_chan < 0)
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{
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perror_with_name (filename);
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}
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/* Leave scratch_pathname allocated. abfd->name will point to it. */
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abfd = bfd_fdopenr (scratch_pathname, gnutarget, scratch_chan);
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if (!abfd)
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{
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close (scratch_chan);
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error ("Could not open `%s' as an executable file: %s",
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scratch_pathname, bfd_errmsg (bfd_get_error ()));
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}
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/* Leave bfd open, core_xfer_memory and "info files" need it. */
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so->abfd = abfd;
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bfd_set_cacheable (abfd, 1);
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/* copy full path name into so_name, so that later symbol_file_add
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can find it */
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if (strlen (scratch_pathname) >= SO_NAME_MAX_PATH_SIZE)
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error ("Full path name length of shared library exceeds SO_NAME_MAX_PATH_SIZE in so_list structure.");
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strcpy (so->so_name, scratch_pathname);
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if (!bfd_check_format (abfd, bfd_object))
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{
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error ("\"%s\": not in executable format: %s.",
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scratch_pathname, bfd_errmsg (bfd_get_error ()));
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}
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if (build_section_table (abfd, &so->sections, &so->sections_end))
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{
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error ("Can't find the file sections in `%s': %s",
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bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ()));
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}
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for (p = so->sections; p < so->sections_end; p++)
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{
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/* Relocate the section binding addresses as recorded in the shared
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object's file by the base address to which the object was actually
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mapped. */
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TARGET_SO_RELOCATE_SECTION_ADDRESSES (so, p);
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if (strcmp (p->the_bfd_section->name, ".text") == 0)
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{
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so->textsection = p;
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}
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}
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/* Free the file names, close the file now. */
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do_cleanups (old_chain);
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return (1);
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}
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/* LOCAL FUNCTION
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free_so --- free a `struct so_list' object
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SYNOPSIS
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void free_so (struct so_list *so)
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DESCRIPTION
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Free the storage associated with the `struct so_list' object SO.
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If we have opened a BFD for SO, close it.
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The caller is responsible for removing SO from whatever list it is
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a member of. If we have placed SO's sections in some target's
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section table, the caller is responsible for removing them.
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This function doesn't mess with objfiles at all. If there is an
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objfile associated with SO that needs to be removed, the caller is
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responsible for taking care of that. */
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void
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free_so (struct so_list *so)
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{
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char *bfd_filename = 0;
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if (so->sections)
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xfree (so->sections);
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if (so->abfd)
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{
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bfd_filename = bfd_get_filename (so->abfd);
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if (! bfd_close (so->abfd))
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warning ("cannot close \"%s\": %s",
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bfd_filename, bfd_errmsg (bfd_get_error ()));
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}
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if (bfd_filename)
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xfree (bfd_filename);
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TARGET_SO_FREE_SO (so);
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xfree (so);
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}
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/* A small stub to get us past the arg-passing pinhole of catch_errors. */
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static int
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symbol_add_stub (void *arg)
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{
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struct so_list *so = (struct so_list *) arg; /* catch_errs bogon */
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struct section_addr_info *sap;
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/* Have we already loaded this shared object? */
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ALL_OBJFILES (so->objfile)
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{
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if (strcmp (so->objfile->name, so->so_name) == 0)
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return 1;
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}
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sap = build_section_addr_info_from_section_table (so->sections,
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so->sections_end);
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so->objfile = symbol_file_add (so->so_name, so->from_tty,
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sap, 0, OBJF_SHARED);
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free_section_addr_info (sap);
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return (1);
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}
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/* LOCAL FUNCTION
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update_solib_list --- synchronize GDB's shared object list with inferior's
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SYNOPSIS
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void update_solib_list (int from_tty, struct target_ops *TARGET)
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Extract the list of currently loaded shared objects from the
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inferior, and compare it with the list of shared objects currently
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in GDB's so_list_head list. Edit so_list_head to bring it in sync
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with the inferior's new list.
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If we notice that the inferior has unloaded some shared objects,
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free any symbolic info GDB had read about those shared objects.
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Don't load symbolic info for any new shared objects; just add them
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to the list, and leave their symbols_loaded flag clear.
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If FROM_TTY is non-null, feel free to print messages about what
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we're doing.
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If TARGET is non-null, add the sections of all new shared objects
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to TARGET's section table. Note that this doesn't remove any
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sections for shared objects that have been unloaded, and it
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doesn't check to see if the new shared objects are already present in
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the section table. But we only use this for core files and
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processes we've just attached to, so that's okay. */
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static void
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update_solib_list (int from_tty, struct target_ops *target)
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{
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struct so_list *inferior = TARGET_SO_CURRENT_SOS ();
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struct so_list *gdb, **gdb_link;
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/* If we are attaching to a running process for which we
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have not opened a symbol file, we may be able to get its
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symbols now! */
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if (attach_flag &&
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symfile_objfile == NULL)
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catch_errors (TARGET_SO_OPEN_SYMBOL_FILE_OBJECT, &from_tty,
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"Error reading attached process's symbol file.\n",
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RETURN_MASK_ALL);
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/* Since this function might actually add some elements to the
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so_list_head list, arrange for it to be cleaned up when
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appropriate. */
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if (!solib_cleanup_queued)
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{
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make_run_cleanup (do_clear_solib, NULL);
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solib_cleanup_queued = 1;
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}
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/* GDB and the inferior's dynamic linker each maintain their own
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list of currently loaded shared objects; we want to bring the
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former in sync with the latter. Scan both lists, seeing which
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shared objects appear where. There are three cases:
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- A shared object appears on both lists. This means that GDB
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knows about it already, and it's still loaded in the inferior.
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Nothing needs to happen.
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- A shared object appears only on GDB's list. This means that
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the inferior has unloaded it. We should remove the shared
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object from GDB's tables.
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- A shared object appears only on the inferior's list. This
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means that it's just been loaded. We should add it to GDB's
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tables.
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So we walk GDB's list, checking each entry to see if it appears
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in the inferior's list too. If it does, no action is needed, and
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we remove it from the inferior's list. If it doesn't, the
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inferior has unloaded it, and we remove it from GDB's list. By
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the time we're done walking GDB's list, the inferior's list
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contains only the new shared objects, which we then add. */
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gdb = so_list_head;
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gdb_link = &so_list_head;
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while (gdb)
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{
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struct so_list *i = inferior;
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struct so_list **i_link = &inferior;
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/* Check to see whether the shared object *gdb also appears in
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the inferior's current list. */
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while (i)
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{
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if (! strcmp (gdb->so_original_name, i->so_original_name))
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break;
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i_link = &i->next;
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i = *i_link;
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}
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/* If the shared object appears on the inferior's list too, then
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it's still loaded, so we don't need to do anything. Delete
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it from the inferior's list, and leave it on GDB's list. */
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if (i)
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{
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*i_link = i->next;
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free_so (i);
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gdb_link = &gdb->next;
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gdb = *gdb_link;
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}
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/* If it's not on the inferior's list, remove it from GDB's tables. */
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else
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{
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*gdb_link = gdb->next;
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/* Unless the user loaded it explicitly, free SO's objfile. */
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if (gdb->objfile && ! (gdb->objfile->flags & OBJF_USERLOADED))
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free_objfile (gdb->objfile);
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/* Some targets' section tables might be referring to
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sections from so->abfd; remove them. */
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remove_target_sections (gdb->abfd);
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free_so (gdb);
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gdb = *gdb_link;
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}
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}
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/* Now the inferior's list contains only shared objects that don't
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appear in GDB's list --- those that are newly loaded. Add them
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to GDB's shared object list. */
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if (inferior)
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{
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struct so_list *i;
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/* Add the new shared objects to GDB's list. */
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*gdb_link = inferior;
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/* Fill in the rest of each of the `struct so_list' nodes. */
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for (i = inferior; i; i = i->next)
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{
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i->from_tty = from_tty;
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/* Fill in the rest of the `struct so_list' node. */
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catch_errors (solib_map_sections, i,
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"Error while mapping shared library sections:\n",
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RETURN_MASK_ALL);
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|
|
/* If requested, add the shared object's sections to the TARGET's
|
|
section table. Do this immediately after mapping the object so
|
|
that later nodes in the list can query this object, as is needed
|
|
in solib-osf.c. */
|
|
if (target)
|
|
{
|
|
int count = (i->sections_end - i->sections);
|
|
if (count > 0)
|
|
{
|
|
int space = target_resize_to_sections (target, count);
|
|
memcpy (target->to_sections + space,
|
|
i->sections,
|
|
count * sizeof (i->sections[0]));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* GLOBAL FUNCTION
|
|
|
|
solib_add -- read in symbol info for newly added shared libraries
|
|
|
|
SYNOPSIS
|
|
|
|
void solib_add (char *pattern, int from_tty, struct target_ops
|
|
*TARGET, int readsyms)
|
|
|
|
DESCRIPTION
|
|
|
|
Read in symbolic information for any shared objects whose names
|
|
match PATTERN. (If we've already read a shared object's symbol
|
|
info, leave it alone.) If PATTERN is zero, read them all.
|
|
|
|
If READSYMS is 0, defer reading symbolic information until later
|
|
but still do any needed low level processing.
|
|
|
|
FROM_TTY and TARGET are as described for update_solib_list, above. */
|
|
|
|
void
|
|
solib_add (char *pattern, int from_tty, struct target_ops *target, int readsyms)
|
|
{
|
|
struct so_list *gdb;
|
|
|
|
if (pattern)
|
|
{
|
|
char *re_err = re_comp (pattern);
|
|
|
|
if (re_err)
|
|
error ("Invalid regexp: %s", re_err);
|
|
}
|
|
|
|
update_solib_list (from_tty, target);
|
|
|
|
/* Walk the list of currently loaded shared libraries, and read
|
|
symbols for any that match the pattern --- or any whose symbols
|
|
aren't already loaded, if no pattern was given. */
|
|
{
|
|
int any_matches = 0;
|
|
int loaded_any_symbols = 0;
|
|
|
|
for (gdb = so_list_head; gdb; gdb = gdb->next)
|
|
if (! pattern || re_exec (gdb->so_name))
|
|
{
|
|
any_matches = 1;
|
|
|
|
if (gdb->symbols_loaded)
|
|
{
|
|
if (from_tty)
|
|
printf_unfiltered ("Symbols already loaded for %s\n",
|
|
gdb->so_name);
|
|
}
|
|
else if (readsyms)
|
|
{
|
|
if (catch_errors
|
|
(symbol_add_stub, gdb,
|
|
"Error while reading shared library symbols:\n",
|
|
RETURN_MASK_ALL))
|
|
{
|
|
if (from_tty)
|
|
printf_unfiltered ("Loaded symbols for %s\n",
|
|
gdb->so_name);
|
|
gdb->symbols_loaded = 1;
|
|
loaded_any_symbols = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (from_tty && pattern && ! any_matches)
|
|
printf_unfiltered
|
|
("No loaded shared libraries match the pattern `%s'.\n", pattern);
|
|
|
|
if (loaded_any_symbols)
|
|
{
|
|
/* Getting new symbols may change our opinion about what is
|
|
frameless. */
|
|
reinit_frame_cache ();
|
|
|
|
TARGET_SO_SPECIAL_SYMBOL_HANDLING ();
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
|
|
LOCAL FUNCTION
|
|
|
|
info_sharedlibrary_command -- code for "info sharedlibrary"
|
|
|
|
SYNOPSIS
|
|
|
|
static void info_sharedlibrary_command ()
|
|
|
|
DESCRIPTION
|
|
|
|
Walk through the shared library list and print information
|
|
about each attached library.
|
|
*/
|
|
|
|
static void
|
|
info_sharedlibrary_command (char *ignore, int from_tty)
|
|
{
|
|
struct so_list *so = NULL; /* link map state variable */
|
|
int header_done = 0;
|
|
int addr_width;
|
|
char *addr_fmt;
|
|
|
|
if (TARGET_PTR_BIT == 32)
|
|
{
|
|
addr_width = 8 + 4;
|
|
addr_fmt = "08l";
|
|
}
|
|
else if (TARGET_PTR_BIT == 64)
|
|
{
|
|
addr_width = 16 + 4;
|
|
addr_fmt = "016l";
|
|
}
|
|
else
|
|
{
|
|
internal_error (__FILE__, __LINE__,
|
|
"TARGET_PTR_BIT returned unknown size %d",
|
|
TARGET_PTR_BIT);
|
|
}
|
|
|
|
update_solib_list (from_tty, 0);
|
|
|
|
for (so = so_list_head; so; so = so->next)
|
|
{
|
|
if (so->so_name[0])
|
|
{
|
|
if (!header_done)
|
|
{
|
|
printf_unfiltered ("%-*s%-*s%-12s%s\n", addr_width, "From",
|
|
addr_width, "To", "Syms Read",
|
|
"Shared Object Library");
|
|
header_done++;
|
|
}
|
|
|
|
printf_unfiltered ("%-*s", addr_width,
|
|
so->textsection != NULL
|
|
? local_hex_string_custom (
|
|
(LONGEST) so->textsection->addr,
|
|
addr_fmt)
|
|
: "");
|
|
printf_unfiltered ("%-*s", addr_width,
|
|
so->textsection != NULL
|
|
? local_hex_string_custom (
|
|
(LONGEST) so->textsection->endaddr,
|
|
addr_fmt)
|
|
: "");
|
|
printf_unfiltered ("%-12s", so->symbols_loaded ? "Yes" : "No");
|
|
printf_unfiltered ("%s\n", so->so_name);
|
|
}
|
|
}
|
|
if (so_list_head == NULL)
|
|
{
|
|
printf_unfiltered ("No shared libraries loaded at this time.\n");
|
|
}
|
|
}
|
|
|
|
/*
|
|
|
|
GLOBAL FUNCTION
|
|
|
|
solib_address -- check to see if an address is in a shared lib
|
|
|
|
SYNOPSIS
|
|
|
|
char * solib_address (CORE_ADDR address)
|
|
|
|
DESCRIPTION
|
|
|
|
Provides a hook for other gdb routines to discover whether or
|
|
not a particular address is within the mapped address space of
|
|
a shared library.
|
|
|
|
For example, this routine is called at one point to disable
|
|
breakpoints which are in shared libraries that are not currently
|
|
mapped in.
|
|
*/
|
|
|
|
char *
|
|
solib_address (CORE_ADDR address)
|
|
{
|
|
struct so_list *so = 0; /* link map state variable */
|
|
|
|
for (so = so_list_head; so; so = so->next)
|
|
{
|
|
struct section_table *p;
|
|
|
|
for (p = so->sections; p < so->sections_end; p++)
|
|
{
|
|
if (p->addr <= address && address < p->endaddr)
|
|
return (so->so_name);
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* Called by free_all_symtabs */
|
|
|
|
void
|
|
clear_solib (void)
|
|
{
|
|
/* This function is expected to handle ELF shared libraries. It is
|
|
also used on Solaris, which can run either ELF or a.out binaries
|
|
(for compatibility with SunOS 4), both of which can use shared
|
|
libraries. So we don't know whether we have an ELF executable or
|
|
an a.out executable until the user chooses an executable file.
|
|
|
|
ELF shared libraries don't get mapped into the address space
|
|
until after the program starts, so we'd better not try to insert
|
|
breakpoints in them immediately. We have to wait until the
|
|
dynamic linker has loaded them; we'll hit a bp_shlib_event
|
|
breakpoint (look for calls to create_solib_event_breakpoint) when
|
|
it's ready.
|
|
|
|
SunOS shared libraries seem to be different --- they're present
|
|
as soon as the process begins execution, so there's no need to
|
|
put off inserting breakpoints. There's also nowhere to put a
|
|
bp_shlib_event breakpoint, so if we put it off, we'll never get
|
|
around to it.
|
|
|
|
So: disable breakpoints only if we're using ELF shared libs. */
|
|
if (exec_bfd != NULL
|
|
&& bfd_get_flavour (exec_bfd) != bfd_target_aout_flavour)
|
|
disable_breakpoints_in_shlibs (1);
|
|
|
|
while (so_list_head)
|
|
{
|
|
struct so_list *so = so_list_head;
|
|
so_list_head = so->next;
|
|
if (so->abfd)
|
|
remove_target_sections (so->abfd);
|
|
free_so (so);
|
|
}
|
|
|
|
TARGET_SO_CLEAR_SOLIB ();
|
|
}
|
|
|
|
static void
|
|
do_clear_solib (void *dummy)
|
|
{
|
|
solib_cleanup_queued = 0;
|
|
clear_solib ();
|
|
}
|
|
|
|
/* GLOBAL FUNCTION
|
|
|
|
solib_create_inferior_hook -- shared library startup support
|
|
|
|
SYNOPSIS
|
|
|
|
void solib_create_inferior_hook()
|
|
|
|
DESCRIPTION
|
|
|
|
When gdb starts up the inferior, it nurses it along (through the
|
|
shell) until it is ready to execute it's first instruction. At this
|
|
point, this function gets called via expansion of the macro
|
|
SOLIB_CREATE_INFERIOR_HOOK. */
|
|
|
|
void
|
|
solib_create_inferior_hook (void)
|
|
{
|
|
TARGET_SO_SOLIB_CREATE_INFERIOR_HOOK ();
|
|
}
|
|
|
|
/* GLOBAL FUNCTION
|
|
|
|
in_solib_dynsym_resolve_code -- check to see if an address is in
|
|
dynamic loader's dynamic symbol
|
|
resolution code
|
|
|
|
SYNOPSIS
|
|
|
|
int in_solib_dynsym_resolve_code (CORE_ADDR pc)
|
|
|
|
DESCRIPTION
|
|
|
|
Determine if PC is in the dynamic linker's symbol resolution
|
|
code. Return 1 if so, 0 otherwise.
|
|
*/
|
|
|
|
int
|
|
in_solib_dynsym_resolve_code (CORE_ADDR pc)
|
|
{
|
|
return TARGET_SO_IN_DYNSYM_RESOLVE_CODE (pc);
|
|
}
|
|
|
|
/*
|
|
|
|
LOCAL FUNCTION
|
|
|
|
sharedlibrary_command -- handle command to explicitly add library
|
|
|
|
SYNOPSIS
|
|
|
|
static void sharedlibrary_command (char *args, int from_tty)
|
|
|
|
DESCRIPTION
|
|
|
|
*/
|
|
|
|
static void
|
|
sharedlibrary_command (char *args, int from_tty)
|
|
{
|
|
dont_repeat ();
|
|
solib_add (args, from_tty, (struct target_ops *) 0, 1);
|
|
}
|
|
|
|
/* LOCAL FUNCTION
|
|
|
|
no_shared_libraries -- handle command to explicitly discard symbols
|
|
from shared libraries.
|
|
|
|
DESCRIPTION
|
|
|
|
Implements the command "nosharedlibrary", which discards symbols
|
|
that have been auto-loaded from shared libraries. Symbols from
|
|
shared libraries that were added by explicit request of the user
|
|
are not discarded. Also called from remote.c. */
|
|
|
|
void
|
|
no_shared_libraries (char *ignored, int from_tty)
|
|
{
|
|
objfile_purge_solibs ();
|
|
do_clear_solib (NULL);
|
|
}
|
|
|
|
static void
|
|
reload_shared_libraries (char *ignored, int from_tty)
|
|
{
|
|
no_shared_libraries (NULL, from_tty);
|
|
solib_add (NULL, from_tty, NULL, auto_solib_add);
|
|
}
|
|
|
|
extern initialize_file_ftype _initialize_solib; /* -Wmissing-prototypes */
|
|
|
|
void
|
|
_initialize_solib (void)
|
|
{
|
|
struct cmd_list_element *c;
|
|
|
|
add_com ("sharedlibrary", class_files, sharedlibrary_command,
|
|
"Load shared object library symbols for files matching REGEXP.");
|
|
add_info ("sharedlibrary", info_sharedlibrary_command,
|
|
"Status of loaded shared object libraries.");
|
|
add_com ("nosharedlibrary", class_files, no_shared_libraries,
|
|
"Unload all shared object library symbols.");
|
|
|
|
add_show_from_set
|
|
(add_set_cmd ("auto-solib-add", class_support, var_boolean,
|
|
(char *) &auto_solib_add,
|
|
"Set autoloading of shared library symbols.\n\
|
|
If \"on\", symbols from all shared object libraries will be loaded\n\
|
|
automatically when the inferior begins execution, when the dynamic linker\n\
|
|
informs gdb that a new library has been loaded, or when attaching to the\n\
|
|
inferior. Otherwise, symbols must be loaded manually, using `sharedlibrary'.",
|
|
&setlist),
|
|
&showlist);
|
|
|
|
c = add_set_cmd ("solib-absolute-prefix", class_support, var_filename,
|
|
(char *) &solib_absolute_prefix,
|
|
"Set prefix for loading absolute shared library symbol files.\n\
|
|
For other (relative) files, you can add values using `set solib-search-path'.",
|
|
&setlist);
|
|
add_show_from_set (c, &showlist);
|
|
set_cmd_cfunc (c, reload_shared_libraries);
|
|
set_cmd_completer (c, filename_completer);
|
|
|
|
/* Set the default value of "solib-absolute-prefix" from the sysroot, if
|
|
one is set. */
|
|
solib_absolute_prefix = xstrdup (gdb_sysroot);
|
|
|
|
c = add_set_cmd ("solib-search-path", class_support, var_string,
|
|
(char *) &solib_search_path,
|
|
"Set the search path for loading non-absolute shared library symbol files.\n\
|
|
This takes precedence over the environment variables PATH and LD_LIBRARY_PATH.",
|
|
&setlist);
|
|
add_show_from_set (c, &showlist);
|
|
set_cmd_cfunc (c, reload_shared_libraries);
|
|
set_cmd_completer (c, filename_completer);
|
|
}
|