/* Handle shared libraries for GDB, the GNU Debugger.
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/* Handle shared libraries for GDB, the GNU Debugger.
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Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
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Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
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2000, 2001, 2002, 2003, 2005, 2006, 2007, 2008
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2000, 2001, 2002, 2003, 2005, 2006, 2007, 2008
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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This file is part of GDB.
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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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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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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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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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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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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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "defs.h"
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#include <sys/types.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <fcntl.h>
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#include "gdb_string.h"
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#include "gdb_string.h"
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#include "symtab.h"
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#include "symtab.h"
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#include "bfd.h"
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#include "bfd.h"
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#include "symfile.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "objfiles.h"
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#include "exceptions.h"
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#include "exceptions.h"
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#include "gdbcore.h"
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#include "gdbcore.h"
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#include "command.h"
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#include "command.h"
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#include "target.h"
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#include "target.h"
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#include "frame.h"
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#include "frame.h"
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#include "gdb_regex.h"
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#include "gdb_regex.h"
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#include "inferior.h"
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#include "inferior.h"
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#include "environ.h"
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#include "environ.h"
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#include "language.h"
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#include "language.h"
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#include "gdbcmd.h"
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#include "gdbcmd.h"
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#include "completer.h"
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#include "completer.h"
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#include "filenames.h" /* for DOSish file names */
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#include "filenames.h" /* for DOSish file names */
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#include "exec.h"
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#include "exec.h"
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#include "solist.h"
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#include "solist.h"
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#include "observer.h"
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#include "observer.h"
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#include "readline/readline.h"
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#include "readline/readline.h"
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/* Architecture-specific operations. */
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/* Architecture-specific operations. */
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/* Per-architecture data key. */
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/* Per-architecture data key. */
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static struct gdbarch_data *solib_data;
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static struct gdbarch_data *solib_data;
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static void *
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static void *
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solib_init (struct obstack *obstack)
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solib_init (struct obstack *obstack)
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{
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{
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struct target_so_ops **ops;
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struct target_so_ops **ops;
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ops = OBSTACK_ZALLOC (obstack, struct target_so_ops *);
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ops = OBSTACK_ZALLOC (obstack, struct target_so_ops *);
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*ops = current_target_so_ops;
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*ops = current_target_so_ops;
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return ops;
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return ops;
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}
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}
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static struct target_so_ops *
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static struct target_so_ops *
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solib_ops (struct gdbarch *gdbarch)
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solib_ops (struct gdbarch *gdbarch)
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{
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{
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struct target_so_ops **ops = gdbarch_data (gdbarch, solib_data);
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struct target_so_ops **ops = gdbarch_data (gdbarch, solib_data);
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return *ops;
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return *ops;
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}
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}
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/* Set the solib operations for GDBARCH to NEW_OPS. */
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/* Set the solib operations for GDBARCH to NEW_OPS. */
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void
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void
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set_solib_ops (struct gdbarch *gdbarch, struct target_so_ops *new_ops)
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set_solib_ops (struct gdbarch *gdbarch, struct target_so_ops *new_ops)
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{
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{
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struct target_so_ops **ops = gdbarch_data (gdbarch, solib_data);
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struct target_so_ops **ops = gdbarch_data (gdbarch, solib_data);
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*ops = new_ops;
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*ops = new_ops;
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}
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}
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/* external data declarations */
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/* external data declarations */
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/* FIXME: gdbarch needs to control this variable, or else every
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/* FIXME: gdbarch needs to control this variable, or else every
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configuration needs to call set_solib_ops. */
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configuration needs to call set_solib_ops. */
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struct target_so_ops *current_target_so_ops;
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struct target_so_ops *current_target_so_ops;
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/* local data declarations */
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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 struct so_list *so_list_head; /* List of known shared objects */
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/* Local function prototypes */
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/* Local function prototypes */
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/* If non-empty, this is a search path for loading non-absolute shared library
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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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symbol files. This takes precedence over the environment variables PATH
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and LD_LIBRARY_PATH. */
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and LD_LIBRARY_PATH. */
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static char *solib_search_path = NULL;
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static char *solib_search_path = NULL;
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static void
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static void
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show_solib_search_path (struct ui_file *file, int from_tty,
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show_solib_search_path (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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struct cmd_list_element *c, const char *value)
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{
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{
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fprintf_filtered (file, _("\
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fprintf_filtered (file, _("\
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The search path for loading non-absolute shared library symbol files is %s.\n"),
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The search path for loading non-absolute shared library symbol files is %s.\n"),
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value);
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value);
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}
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}
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/*
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/*
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GLOBAL FUNCTION
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GLOBAL FUNCTION
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solib_open -- Find a shared library file and open it.
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solib_open -- Find a shared library file and open it.
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SYNOPSIS
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SYNOPSIS
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int solib_open (char *in_patname, char **found_pathname);
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int solib_open (char *in_patname, char **found_pathname);
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DESCRIPTION
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DESCRIPTION
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Global variable GDB_SYSROOT is used as a prefix directory
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Global variable GDB_SYSROOT 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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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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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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(or set of directories, as in LD_LIBRARY_PATH) to search for all
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shared libraries if not found in GDB_SYSROOT.
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shared libraries if not found in GDB_SYSROOT.
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Search algorithm:
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Search algorithm:
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* If there is a gdb_sysroot and path is absolute:
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* If there is a gdb_sysroot and path is absolute:
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* Search for gdb_sysroot/path.
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* Search for gdb_sysroot/path.
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* else
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* else
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* Look for it literally (unmodified).
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* Look for it literally (unmodified).
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* Look in SOLIB_SEARCH_PATH.
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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 available, use target defined search function.
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* If gdb_sysroot is NOT set, perform the following two searches:
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* If gdb_sysroot 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 $PATH.
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* Look in inferior's $LD_LIBRARY_PATH.
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* Look in inferior's $LD_LIBRARY_PATH.
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*
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*
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* The last check avoids doing this search when targetting remote
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* The last check avoids doing this search when targetting remote
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* machines since gdb_sysroot will almost always be set.
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* machines since gdb_sysroot will almost always be set.
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RETURNS
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RETURNS
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file handle for opened solib, or -1 for failure. */
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file handle for opened solib, or -1 for failure. */
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int
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int
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solib_open (char *in_pathname, char **found_pathname)
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solib_open (char *in_pathname, char **found_pathname)
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{
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{
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struct target_so_ops *ops = solib_ops (current_gdbarch);
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struct target_so_ops *ops = solib_ops (current_gdbarch);
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int found_file = -1;
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int found_file = -1;
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char *temp_pathname = NULL;
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char *temp_pathname = NULL;
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char *p = in_pathname;
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char *p = in_pathname;
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int gdb_sysroot_is_empty;
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int gdb_sysroot_is_empty;
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gdb_sysroot_is_empty = (gdb_sysroot == NULL || *gdb_sysroot == 0);
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gdb_sysroot_is_empty = (gdb_sysroot == NULL || *gdb_sysroot == 0);
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if (! IS_ABSOLUTE_PATH (in_pathname) || gdb_sysroot_is_empty)
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if (! IS_ABSOLUTE_PATH (in_pathname) || gdb_sysroot_is_empty)
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temp_pathname = in_pathname;
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temp_pathname = in_pathname;
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else
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else
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{
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{
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int prefix_len = strlen (gdb_sysroot);
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int prefix_len = strlen (gdb_sysroot);
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/* Remove trailing slashes from absolute prefix. */
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/* Remove trailing slashes from absolute prefix. */
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while (prefix_len > 0
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while (prefix_len > 0
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&& IS_DIR_SEPARATOR (gdb_sysroot[prefix_len - 1]))
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&& IS_DIR_SEPARATOR (gdb_sysroot[prefix_len - 1]))
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prefix_len--;
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prefix_len--;
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/* Cat the prefixed pathname together. */
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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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temp_pathname = alloca (prefix_len + strlen (in_pathname) + 1);
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strncpy (temp_pathname, gdb_sysroot, prefix_len);
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strncpy (temp_pathname, gdb_sysroot, prefix_len);
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temp_pathname[prefix_len] = '\0';
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temp_pathname[prefix_len] = '\0';
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strcat (temp_pathname, in_pathname);
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strcat (temp_pathname, in_pathname);
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}
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}
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/* Now see if we can open it. */
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/* Now see if we can open it. */
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found_file = open (temp_pathname, O_RDONLY | O_BINARY, 0);
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found_file = open (temp_pathname, O_RDONLY | O_BINARY, 0);
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/* We try to find the library in various ways. After each attempt
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/* We try to find the library in various ways. After each attempt
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(except for the one above), either found_file >= 0 and
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(except for the one above), either found_file >= 0 and
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temp_pathname is a malloc'd string, or found_file < 0 and
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temp_pathname is a malloc'd string, or found_file < 0 and
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temp_pathname does not point to storage that needs to be
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temp_pathname does not point to storage that needs to be
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freed. */
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freed. */
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if (found_file < 0)
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if (found_file < 0)
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temp_pathname = NULL;
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temp_pathname = NULL;
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else
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else
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temp_pathname = xstrdup (temp_pathname);
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temp_pathname = xstrdup (temp_pathname);
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/* If the search in gdb_sysroot failed, and the path name is
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/* If the search in gdb_sysroot 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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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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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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Affects subsequent searches for this solib. */
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if (found_file < 0 && IS_ABSOLUTE_PATH (in_pathname))
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if (found_file < 0 && IS_ABSOLUTE_PATH (in_pathname))
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{
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{
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/* First, get rid of any drive letters etc. */
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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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while (!IS_DIR_SEPARATOR (*in_pathname))
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in_pathname++;
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in_pathname++;
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/* Next, get rid of all leading dir separators. */
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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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while (IS_DIR_SEPARATOR (*in_pathname))
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in_pathname++;
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in_pathname++;
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}
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}
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/* If not found, search the solib_search_path (if any). */
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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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if (found_file < 0 && solib_search_path != NULL)
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found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST,
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found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST,
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in_pathname, O_RDONLY | O_BINARY, 0, &temp_pathname);
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in_pathname, O_RDONLY | O_BINARY, 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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/* 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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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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that differs from the opened path. */
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if (found_file < 0 && solib_search_path != NULL)
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if (found_file < 0 && solib_search_path != NULL)
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found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST,
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found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST,
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lbasename (in_pathname), O_RDONLY | O_BINARY, 0,
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lbasename (in_pathname), O_RDONLY | O_BINARY, 0,
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&temp_pathname);
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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 not found, try to use target supplied solib search method */
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if (found_file < 0 && ops->find_and_open_solib)
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if (found_file < 0 && ops->find_and_open_solib)
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found_file = ops->find_and_open_solib (in_pathname, O_RDONLY | O_BINARY,
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found_file = ops->find_and_open_solib (in_pathname, O_RDONLY | O_BINARY,
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&temp_pathname);
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&temp_pathname);
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/* If not found, next search the inferior's $PATH environment variable. */
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/* If not found, next search the inferior's $PATH environment variable. */
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if (found_file < 0 && gdb_sysroot_is_empty)
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if (found_file < 0 && gdb_sysroot_is_empty)
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found_file = openp (get_in_environ (inferior_environ, "PATH"),
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found_file = openp (get_in_environ (inferior_environ, "PATH"),
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OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY, 0,
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OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY, 0,
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&temp_pathname);
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&temp_pathname);
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/* If not found, next search the inferior's $LD_LIBRARY_PATH
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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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environment variable. */
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if (found_file < 0 && gdb_sysroot_is_empty)
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if (found_file < 0 && gdb_sysroot_is_empty)
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found_file = openp (get_in_environ (inferior_environ, "LD_LIBRARY_PATH"),
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found_file = openp (get_in_environ (inferior_environ, "LD_LIBRARY_PATH"),
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OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY, 0,
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OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY, 0,
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&temp_pathname);
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&temp_pathname);
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/* Done. If not found, tough luck. Return found_file and
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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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(optionally) found_pathname. */
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if (temp_pathname)
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if (temp_pathname)
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{
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{
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if (found_pathname != NULL)
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if (found_pathname != NULL)
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*found_pathname = temp_pathname;
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*found_pathname = temp_pathname;
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else
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else
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xfree (temp_pathname);
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xfree (temp_pathname);
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}
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}
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return found_file;
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return found_file;
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}
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}
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/*
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/*
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LOCAL FUNCTION
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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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solib_map_sections -- open bfd and build sections for shared lib
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SYNOPSIS
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SYNOPSIS
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static int solib_map_sections (struct so_list *so)
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static int solib_map_sections (struct so_list *so)
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DESCRIPTION
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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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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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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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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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relocate all the section addresses by the base address at
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which the shared object was mapped.
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which the shared object was mapped.
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FIXMES
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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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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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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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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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mechanism correctly in the below code (particularly the tilde
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expansion stuff?).
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expansion stuff?).
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*/
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*/
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static int
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static int
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solib_map_sections (void *arg)
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solib_map_sections (void *arg)
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{
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{
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struct so_list *so = (struct so_list *) arg; /* catch_errors bogon */
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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 *filename;
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char *scratch_pathname;
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char *scratch_pathname;
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int scratch_chan;
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int scratch_chan;
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struct section_table *p;
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struct section_table *p;
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struct cleanup *old_chain;
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struct cleanup *old_chain;
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bfd *abfd;
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bfd *abfd;
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filename = tilde_expand (so->so_name);
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filename = tilde_expand (so->so_name);
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old_chain = make_cleanup (xfree, filename);
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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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scratch_chan = solib_open (filename, &scratch_pathname);
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if (scratch_chan < 0)
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if (scratch_chan < 0)
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{
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{
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perror_with_name (filename);
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perror_with_name (filename);
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}
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}
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/* Leave scratch_pathname allocated. abfd->name will point to it. */
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/* Leave scratch_pathname allocated. abfd->name will point to it. */
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abfd = bfd_fopen (scratch_pathname, gnutarget, FOPEN_RB, scratch_chan);
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abfd = bfd_fopen (scratch_pathname, gnutarget, FOPEN_RB, scratch_chan);
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if (!abfd)
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if (!abfd)
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{
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{
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close (scratch_chan);
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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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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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scratch_pathname, bfd_errmsg (bfd_get_error ()));
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}
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}
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/* Leave bfd open, core_xfer_memory and "info files" need it. */
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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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so->abfd = abfd;
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bfd_set_cacheable (abfd, 1);
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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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/* copy full path name into so_name, so that later symbol_file_add
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can find it */
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can find it */
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if (strlen (scratch_pathname) >= SO_NAME_MAX_PATH_SIZE)
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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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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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strcpy (so->so_name, scratch_pathname);
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if (!bfd_check_format (abfd, bfd_object))
|
if (!bfd_check_format (abfd, bfd_object))
|
{
|
{
|
error (_("\"%s\": not in executable format: %s."),
|
error (_("\"%s\": not in executable format: %s."),
|
scratch_pathname, bfd_errmsg (bfd_get_error ()));
|
scratch_pathname, bfd_errmsg (bfd_get_error ()));
|
}
|
}
|
if (build_section_table (abfd, &so->sections, &so->sections_end))
|
if (build_section_table (abfd, &so->sections, &so->sections_end))
|
{
|
{
|
error (_("Can't find the file sections in `%s': %s"),
|
error (_("Can't find the file sections in `%s': %s"),
|
bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ()));
|
bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ()));
|
}
|
}
|
|
|
for (p = so->sections; p < so->sections_end; p++)
|
for (p = so->sections; p < so->sections_end; p++)
|
{
|
{
|
struct target_so_ops *ops = solib_ops (current_gdbarch);
|
struct target_so_ops *ops = solib_ops (current_gdbarch);
|
|
|
/* Relocate the section binding addresses as recorded in the shared
|
/* Relocate the section binding addresses as recorded in the shared
|
object's file by the base address to which the object was actually
|
object's file by the base address to which the object was actually
|
mapped. */
|
mapped. */
|
ops->relocate_section_addresses (so, p);
|
ops->relocate_section_addresses (so, p);
|
|
|
/* If the target didn't provide information about the address
|
/* If the target didn't provide information about the address
|
range of the shared object, assume we want the location of
|
range of the shared object, assume we want the location of
|
the .text section. */
|
the .text section. */
|
if (so->addr_low == 0 && so->addr_high == 0
|
if (so->addr_low == 0 && so->addr_high == 0
|
&& strcmp (p->the_bfd_section->name, ".text") == 0)
|
&& strcmp (p->the_bfd_section->name, ".text") == 0)
|
{
|
{
|
so->addr_low = p->addr;
|
so->addr_low = p->addr;
|
so->addr_high = p->endaddr;
|
so->addr_high = p->endaddr;
|
}
|
}
|
}
|
}
|
|
|
/* Free the file names, close the file now. */
|
/* Free the file names, close the file now. */
|
do_cleanups (old_chain);
|
do_cleanups (old_chain);
|
|
|
return (1);
|
return (1);
|
}
|
}
|
|
|
/* LOCAL FUNCTION
|
/* LOCAL FUNCTION
|
|
|
free_so --- free a `struct so_list' object
|
free_so --- free a `struct so_list' object
|
|
|
SYNOPSIS
|
SYNOPSIS
|
|
|
void free_so (struct so_list *so)
|
void free_so (struct so_list *so)
|
|
|
DESCRIPTION
|
DESCRIPTION
|
|
|
Free the storage associated with the `struct so_list' object SO.
|
Free the storage associated with the `struct so_list' object SO.
|
If we have opened a BFD for SO, close it.
|
If we have opened a BFD for SO, close it.
|
|
|
The caller is responsible for removing SO from whatever list it is
|
The caller is responsible for removing SO from whatever list it is
|
a member of. If we have placed SO's sections in some target's
|
a member of. If we have placed SO's sections in some target's
|
section table, the caller is responsible for removing them.
|
section table, the caller is responsible for removing them.
|
|
|
This function doesn't mess with objfiles at all. If there is an
|
This function doesn't mess with objfiles at all. If there is an
|
objfile associated with SO that needs to be removed, the caller is
|
objfile associated with SO that needs to be removed, the caller is
|
responsible for taking care of that. */
|
responsible for taking care of that. */
|
|
|
void
|
void
|
free_so (struct so_list *so)
|
free_so (struct so_list *so)
|
{
|
{
|
struct target_so_ops *ops = solib_ops (current_gdbarch);
|
struct target_so_ops *ops = solib_ops (current_gdbarch);
|
char *bfd_filename = 0;
|
char *bfd_filename = 0;
|
|
|
if (so->sections)
|
if (so->sections)
|
xfree (so->sections);
|
xfree (so->sections);
|
|
|
if (so->abfd)
|
if (so->abfd)
|
{
|
{
|
bfd_filename = bfd_get_filename (so->abfd);
|
bfd_filename = bfd_get_filename (so->abfd);
|
if (! bfd_close (so->abfd))
|
if (! bfd_close (so->abfd))
|
warning (_("cannot close \"%s\": %s"),
|
warning (_("cannot close \"%s\": %s"),
|
bfd_filename, bfd_errmsg (bfd_get_error ()));
|
bfd_filename, bfd_errmsg (bfd_get_error ()));
|
}
|
}
|
|
|
if (bfd_filename)
|
if (bfd_filename)
|
xfree (bfd_filename);
|
xfree (bfd_filename);
|
|
|
ops->free_so (so);
|
ops->free_so (so);
|
|
|
xfree (so);
|
xfree (so);
|
}
|
}
|
|
|
|
|
/* Return address of first so_list entry in master shared object list. */
|
/* Return address of first so_list entry in master shared object list. */
|
struct so_list *
|
struct so_list *
|
master_so_list (void)
|
master_so_list (void)
|
{
|
{
|
return so_list_head;
|
return so_list_head;
|
}
|
}
|
|
|
|
|
/* A small stub to get us past the arg-passing pinhole of catch_errors. */
|
/* A small stub to get us past the arg-passing pinhole of catch_errors. */
|
|
|
static int
|
static int
|
symbol_add_stub (void *arg)
|
symbol_add_stub (void *arg)
|
{
|
{
|
struct so_list *so = (struct so_list *) arg; /* catch_errs bogon */
|
struct so_list *so = (struct so_list *) arg; /* catch_errs bogon */
|
struct section_addr_info *sap;
|
struct section_addr_info *sap;
|
|
|
/* Have we already loaded this shared object? */
|
/* Have we already loaded this shared object? */
|
ALL_OBJFILES (so->objfile)
|
ALL_OBJFILES (so->objfile)
|
{
|
{
|
if (strcmp (so->objfile->name, so->so_name) == 0)
|
if (strcmp (so->objfile->name, so->so_name) == 0)
|
return 1;
|
return 1;
|
}
|
}
|
|
|
sap = build_section_addr_info_from_section_table (so->sections,
|
sap = build_section_addr_info_from_section_table (so->sections,
|
so->sections_end);
|
so->sections_end);
|
|
|
so->objfile = symbol_file_add (so->so_name, so->from_tty,
|
so->objfile = symbol_file_add (so->so_name, so->from_tty,
|
sap, 0, OBJF_SHARED);
|
sap, 0, OBJF_SHARED);
|
free_section_addr_info (sap);
|
free_section_addr_info (sap);
|
|
|
return (1);
|
return (1);
|
}
|
}
|
|
|
/* Read in symbols for shared object SO. If FROM_TTY is non-zero, be
|
/* Read in symbols for shared object SO. If FROM_TTY is non-zero, be
|
chatty about it. Return non-zero if any symbols were actually
|
chatty about it. Return non-zero if any symbols were actually
|
loaded. */
|
loaded. */
|
|
|
int
|
int
|
solib_read_symbols (struct so_list *so, int from_tty)
|
solib_read_symbols (struct so_list *so, int from_tty)
|
{
|
{
|
if (so->symbols_loaded)
|
if (so->symbols_loaded)
|
{
|
{
|
if (from_tty)
|
if (from_tty)
|
printf_unfiltered (_("Symbols already loaded for %s\n"), so->so_name);
|
printf_unfiltered (_("Symbols already loaded for %s\n"), so->so_name);
|
}
|
}
|
else if (so->abfd == NULL)
|
else if (so->abfd == NULL)
|
{
|
{
|
if (from_tty)
|
if (from_tty)
|
printf_unfiltered (_("Symbol file not found for %s\n"), so->so_name);
|
printf_unfiltered (_("Symbol file not found for %s\n"), so->so_name);
|
}
|
}
|
else
|
else
|
{
|
{
|
if (catch_errors (symbol_add_stub, so,
|
if (catch_errors (symbol_add_stub, so,
|
"Error while reading shared library symbols:\n",
|
"Error while reading shared library symbols:\n",
|
RETURN_MASK_ALL))
|
RETURN_MASK_ALL))
|
{
|
{
|
if (from_tty)
|
if (from_tty)
|
printf_unfiltered (_("Loaded symbols for %s\n"), so->so_name);
|
printf_unfiltered (_("Loaded symbols for %s\n"), so->so_name);
|
so->symbols_loaded = 1;
|
so->symbols_loaded = 1;
|
return 1;
|
return 1;
|
}
|
}
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* LOCAL FUNCTION
|
/* LOCAL FUNCTION
|
|
|
update_solib_list --- synchronize GDB's shared object list with inferior's
|
update_solib_list --- synchronize GDB's shared object list with inferior's
|
|
|
SYNOPSIS
|
SYNOPSIS
|
|
|
void update_solib_list (int from_tty, struct target_ops *TARGET)
|
void update_solib_list (int from_tty, struct target_ops *TARGET)
|
|
|
Extract the list of currently loaded shared objects from the
|
Extract the list of currently loaded shared objects from the
|
inferior, and compare it with the list of shared objects currently
|
inferior, and compare it with the list of shared objects currently
|
in GDB's so_list_head list. Edit so_list_head to bring it in sync
|
in GDB's so_list_head list. Edit so_list_head to bring it in sync
|
with the inferior's new list.
|
with the inferior's new list.
|
|
|
If we notice that the inferior has unloaded some shared objects,
|
If we notice that the inferior has unloaded some shared objects,
|
free any symbolic info GDB had read about those shared objects.
|
free any symbolic info GDB had read about those shared objects.
|
|
|
Don't load symbolic info for any new shared objects; just add them
|
Don't load symbolic info for any new shared objects; just add them
|
to the list, and leave their symbols_loaded flag clear.
|
to the list, and leave their symbols_loaded flag clear.
|
|
|
If FROM_TTY is non-null, feel free to print messages about what
|
If FROM_TTY is non-null, feel free to print messages about what
|
we're doing.
|
we're doing.
|
|
|
If TARGET is non-null, add the sections of all new shared objects
|
If TARGET is non-null, add the sections of all new shared objects
|
to TARGET's section table. Note that this doesn't remove any
|
to TARGET's section table. Note that this doesn't remove any
|
sections for shared objects that have been unloaded, and it
|
sections for shared objects that have been unloaded, and it
|
doesn't check to see if the new shared objects are already present in
|
doesn't check to see if the new shared objects are already present in
|
the section table. But we only use this for core files and
|
the section table. But we only use this for core files and
|
processes we've just attached to, so that's okay. */
|
processes we've just attached to, so that's okay. */
|
|
|
static void
|
static void
|
update_solib_list (int from_tty, struct target_ops *target)
|
update_solib_list (int from_tty, struct target_ops *target)
|
{
|
{
|
struct target_so_ops *ops = solib_ops (current_gdbarch);
|
struct target_so_ops *ops = solib_ops (current_gdbarch);
|
struct so_list *inferior = ops->current_sos();
|
struct so_list *inferior = ops->current_sos();
|
struct so_list *gdb, **gdb_link;
|
struct so_list *gdb, **gdb_link;
|
|
|
/* If we are attaching to a running process for which we
|
/* If we are attaching to a running process for which we
|
have not opened a symbol file, we may be able to get its
|
have not opened a symbol file, we may be able to get its
|
symbols now! */
|
symbols now! */
|
if (attach_flag &&
|
if (attach_flag &&
|
symfile_objfile == NULL)
|
symfile_objfile == NULL)
|
catch_errors (ops->open_symbol_file_object, &from_tty,
|
catch_errors (ops->open_symbol_file_object, &from_tty,
|
"Error reading attached process's symbol file.\n",
|
"Error reading attached process's symbol file.\n",
|
RETURN_MASK_ALL);
|
RETURN_MASK_ALL);
|
|
|
/* GDB and the inferior's dynamic linker each maintain their own
|
/* GDB and the inferior's dynamic linker each maintain their own
|
list of currently loaded shared objects; we want to bring the
|
list of currently loaded shared objects; we want to bring the
|
former in sync with the latter. Scan both lists, seeing which
|
former in sync with the latter. Scan both lists, seeing which
|
shared objects appear where. There are three cases:
|
shared objects appear where. There are three cases:
|
|
|
- A shared object appears on both lists. This means that GDB
|
- A shared object appears on both lists. This means that GDB
|
knows about it already, and it's still loaded in the inferior.
|
knows about it already, and it's still loaded in the inferior.
|
Nothing needs to happen.
|
Nothing needs to happen.
|
|
|
- A shared object appears only on GDB's list. This means that
|
- A shared object appears only on GDB's list. This means that
|
the inferior has unloaded it. We should remove the shared
|
the inferior has unloaded it. We should remove the shared
|
object from GDB's tables.
|
object from GDB's tables.
|
|
|
- A shared object appears only on the inferior's list. This
|
- A shared object appears only on the inferior's list. This
|
means that it's just been loaded. We should add it to GDB's
|
means that it's just been loaded. We should add it to GDB's
|
tables.
|
tables.
|
|
|
So we walk GDB's list, checking each entry to see if it appears
|
So we walk GDB's list, checking each entry to see if it appears
|
in the inferior's list too. If it does, no action is needed, and
|
in the inferior's list too. If it does, no action is needed, and
|
we remove it from the inferior's list. If it doesn't, the
|
we remove it from the inferior's list. If it doesn't, the
|
inferior has unloaded it, and we remove it from GDB's list. By
|
inferior has unloaded it, and we remove it from GDB's list. By
|
the time we're done walking GDB's list, the inferior's list
|
the time we're done walking GDB's list, the inferior's list
|
contains only the new shared objects, which we then add. */
|
contains only the new shared objects, which we then add. */
|
|
|
gdb = so_list_head;
|
gdb = so_list_head;
|
gdb_link = &so_list_head;
|
gdb_link = &so_list_head;
|
while (gdb)
|
while (gdb)
|
{
|
{
|
struct so_list *i = inferior;
|
struct so_list *i = inferior;
|
struct so_list **i_link = &inferior;
|
struct so_list **i_link = &inferior;
|
|
|
/* Check to see whether the shared object *gdb also appears in
|
/* Check to see whether the shared object *gdb also appears in
|
the inferior's current list. */
|
the inferior's current list. */
|
while (i)
|
while (i)
|
{
|
{
|
if (ops->same)
|
if (ops->same)
|
{
|
{
|
if (ops->same (gdb, i))
|
if (ops->same (gdb, i))
|
break;
|
break;
|
}
|
}
|
else
|
else
|
{
|
{
|
if (! strcmp (gdb->so_original_name, i->so_original_name))
|
if (! strcmp (gdb->so_original_name, i->so_original_name))
|
break;
|
break;
|
}
|
}
|
|
|
i_link = &i->next;
|
i_link = &i->next;
|
i = *i_link;
|
i = *i_link;
|
}
|
}
|
|
|
/* If the shared object appears on the inferior's list too, then
|
/* If the shared object appears on the inferior's list too, then
|
it's still loaded, so we don't need to do anything. Delete
|
it's still loaded, so we don't need to do anything. Delete
|
it from the inferior's list, and leave it on GDB's list. */
|
it from the inferior's list, and leave it on GDB's list. */
|
if (i)
|
if (i)
|
{
|
{
|
*i_link = i->next;
|
*i_link = i->next;
|
free_so (i);
|
free_so (i);
|
gdb_link = &gdb->next;
|
gdb_link = &gdb->next;
|
gdb = *gdb_link;
|
gdb = *gdb_link;
|
}
|
}
|
|
|
/* If it's not on the inferior's list, remove it from GDB's tables. */
|
/* If it's not on the inferior's list, remove it from GDB's tables. */
|
else
|
else
|
{
|
{
|
/* Notify any observer that the shared object has been
|
/* Notify any observer that the shared object has been
|
unloaded before we remove it from GDB's tables. */
|
unloaded before we remove it from GDB's tables. */
|
observer_notify_solib_unloaded (gdb);
|
observer_notify_solib_unloaded (gdb);
|
|
|
*gdb_link = gdb->next;
|
*gdb_link = gdb->next;
|
|
|
/* Unless the user loaded it explicitly, free SO's objfile. */
|
/* Unless the user loaded it explicitly, free SO's objfile. */
|
if (gdb->objfile && ! (gdb->objfile->flags & OBJF_USERLOADED))
|
if (gdb->objfile && ! (gdb->objfile->flags & OBJF_USERLOADED))
|
free_objfile (gdb->objfile);
|
free_objfile (gdb->objfile);
|
|
|
/* Some targets' section tables might be referring to
|
/* Some targets' section tables might be referring to
|
sections from so->abfd; remove them. */
|
sections from so->abfd; remove them. */
|
remove_target_sections (gdb->abfd);
|
remove_target_sections (gdb->abfd);
|
|
|
free_so (gdb);
|
free_so (gdb);
|
gdb = *gdb_link;
|
gdb = *gdb_link;
|
}
|
}
|
}
|
}
|
|
|
/* Now the inferior's list contains only shared objects that don't
|
/* Now the inferior's list contains only shared objects that don't
|
appear in GDB's list --- those that are newly loaded. Add them
|
appear in GDB's list --- those that are newly loaded. Add them
|
to GDB's shared object list. */
|
to GDB's shared object list. */
|
if (inferior)
|
if (inferior)
|
{
|
{
|
struct so_list *i;
|
struct so_list *i;
|
|
|
/* Add the new shared objects to GDB's list. */
|
/* Add the new shared objects to GDB's list. */
|
*gdb_link = inferior;
|
*gdb_link = inferior;
|
|
|
/* Fill in the rest of each of the `struct so_list' nodes. */
|
/* Fill in the rest of each of the `struct so_list' nodes. */
|
for (i = inferior; i; i = i->next)
|
for (i = inferior; i; i = i->next)
|
{
|
{
|
i->from_tty = from_tty;
|
i->from_tty = from_tty;
|
|
|
/* Fill in the rest of the `struct so_list' node. */
|
/* Fill in the rest of the `struct so_list' node. */
|
catch_errors (solib_map_sections, i,
|
catch_errors (solib_map_sections, i,
|
"Error while mapping shared library sections:\n",
|
"Error while mapping shared library sections:\n",
|
RETURN_MASK_ALL);
|
RETURN_MASK_ALL);
|
|
|
/* If requested, add the shared object's sections to the TARGET's
|
/* If requested, add the shared object's sections to the TARGET's
|
section table. Do this immediately after mapping the object so
|
section table. Do this immediately after mapping the object so
|
that later nodes in the list can query this object, as is needed
|
that later nodes in the list can query this object, as is needed
|
in solib-osf.c. */
|
in solib-osf.c. */
|
if (target)
|
if (target)
|
{
|
{
|
int count = (i->sections_end - i->sections);
|
int count = (i->sections_end - i->sections);
|
if (count > 0)
|
if (count > 0)
|
{
|
{
|
int space = target_resize_to_sections (target, count);
|
int space = target_resize_to_sections (target, count);
|
memcpy (target->to_sections + space,
|
memcpy (target->to_sections + space,
|
i->sections,
|
i->sections,
|
count * sizeof (i->sections[0]));
|
count * sizeof (i->sections[0]));
|
}
|
}
|
}
|
}
|
|
|
/* Notify any observer that the shared object has been
|
/* Notify any observer that the shared object has been
|
loaded now that we've added it to GDB's tables. */
|
loaded now that we've added it to GDB's tables. */
|
observer_notify_solib_loaded (i);
|
observer_notify_solib_loaded (i);
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/* Return non-zero if SO is the libpthread shared library.
|
/* Return non-zero if SO is the libpthread shared library.
|
|
|
Uses a fairly simplistic heuristic approach where we check
|
Uses a fairly simplistic heuristic approach where we check
|
the file name against "/libpthread". This can lead to false
|
the file name against "/libpthread". This can lead to false
|
positives, but this should be good enough in practice. */
|
positives, but this should be good enough in practice. */
|
|
|
static int
|
static int
|
libpthread_solib_p (struct so_list *so)
|
libpthread_solib_p (struct so_list *so)
|
{
|
{
|
return (strstr (so->so_name, "/libpthread") != NULL);
|
return (strstr (so->so_name, "/libpthread") != NULL);
|
}
|
}
|
|
|
/* GLOBAL FUNCTION
|
/* GLOBAL FUNCTION
|
|
|
solib_add -- read in symbol info for newly added shared libraries
|
solib_add -- read in symbol info for newly added shared libraries
|
|
|
SYNOPSIS
|
SYNOPSIS
|
|
|
void solib_add (char *pattern, int from_tty, struct target_ops
|
void solib_add (char *pattern, int from_tty, struct target_ops
|
*TARGET, int readsyms)
|
*TARGET, int readsyms)
|
|
|
DESCRIPTION
|
DESCRIPTION
|
|
|
Read in symbolic information for any shared objects whose names
|
Read in symbolic information for any shared objects whose names
|
match PATTERN. (If we've already read a shared object's symbol
|
match PATTERN. (If we've already read a shared object's symbol
|
info, leave it alone.) If PATTERN is zero, read them all.
|
info, leave it alone.) If PATTERN is zero, read them all.
|
|
|
If READSYMS is 0, defer reading symbolic information until later
|
If READSYMS is 0, defer reading symbolic information until later
|
but still do any needed low level processing.
|
but still do any needed low level processing.
|
|
|
FROM_TTY and TARGET are as described for update_solib_list, above. */
|
FROM_TTY and TARGET are as described for update_solib_list, above. */
|
|
|
void
|
void
|
solib_add (char *pattern, int from_tty, struct target_ops *target, int readsyms)
|
solib_add (char *pattern, int from_tty, struct target_ops *target, int readsyms)
|
{
|
{
|
struct so_list *gdb;
|
struct so_list *gdb;
|
|
|
if (pattern)
|
if (pattern)
|
{
|
{
|
char *re_err = re_comp (pattern);
|
char *re_err = re_comp (pattern);
|
|
|
if (re_err)
|
if (re_err)
|
error (_("Invalid regexp: %s"), re_err);
|
error (_("Invalid regexp: %s"), re_err);
|
}
|
}
|
|
|
update_solib_list (from_tty, target);
|
update_solib_list (from_tty, target);
|
|
|
/* Walk the list of currently loaded shared libraries, and read
|
/* Walk the list of currently loaded shared libraries, and read
|
symbols for any that match the pattern --- or any whose symbols
|
symbols for any that match the pattern --- or any whose symbols
|
aren't already loaded, if no pattern was given. */
|
aren't already loaded, if no pattern was given. */
|
{
|
{
|
int any_matches = 0;
|
int any_matches = 0;
|
int loaded_any_symbols = 0;
|
int loaded_any_symbols = 0;
|
|
|
for (gdb = so_list_head; gdb; gdb = gdb->next)
|
for (gdb = so_list_head; gdb; gdb = gdb->next)
|
if (! pattern || re_exec (gdb->so_name))
|
if (! pattern || re_exec (gdb->so_name))
|
{
|
{
|
/* Normally, we would read the symbols from that library
|
/* Normally, we would read the symbols from that library
|
only if READSYMS is set. However, we're making a small
|
only if READSYMS is set. However, we're making a small
|
exception for the pthread library, because we sometimes
|
exception for the pthread library, because we sometimes
|
need the library symbols to be loaded in order to provide
|
need the library symbols to be loaded in order to provide
|
thread support (x86-linux for instance). */
|
thread support (x86-linux for instance). */
|
const int add_this_solib =
|
const int add_this_solib =
|
(readsyms || libpthread_solib_p (gdb));
|
(readsyms || libpthread_solib_p (gdb));
|
|
|
any_matches = 1;
|
any_matches = 1;
|
if (add_this_solib && solib_read_symbols (gdb, from_tty))
|
if (add_this_solib && solib_read_symbols (gdb, from_tty))
|
loaded_any_symbols = 1;
|
loaded_any_symbols = 1;
|
}
|
}
|
|
|
if (from_tty && pattern && ! any_matches)
|
if (from_tty && pattern && ! any_matches)
|
printf_unfiltered
|
printf_unfiltered
|
("No loaded shared libraries match the pattern `%s'.\n", pattern);
|
("No loaded shared libraries match the pattern `%s'.\n", pattern);
|
|
|
if (loaded_any_symbols)
|
if (loaded_any_symbols)
|
{
|
{
|
struct target_so_ops *ops = solib_ops (current_gdbarch);
|
struct target_so_ops *ops = solib_ops (current_gdbarch);
|
|
|
/* Getting new symbols may change our opinion about what is
|
/* Getting new symbols may change our opinion about what is
|
frameless. */
|
frameless. */
|
reinit_frame_cache ();
|
reinit_frame_cache ();
|
|
|
ops->special_symbol_handling ();
|
ops->special_symbol_handling ();
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
|
|
/*
|
/*
|
|
|
LOCAL FUNCTION
|
LOCAL FUNCTION
|
|
|
info_sharedlibrary_command -- code for "info sharedlibrary"
|
info_sharedlibrary_command -- code for "info sharedlibrary"
|
|
|
SYNOPSIS
|
SYNOPSIS
|
|
|
static void info_sharedlibrary_command ()
|
static void info_sharedlibrary_command ()
|
|
|
DESCRIPTION
|
DESCRIPTION
|
|
|
Walk through the shared library list and print information
|
Walk through the shared library list and print information
|
about each attached library.
|
about each attached library.
|
*/
|
*/
|
|
|
static void
|
static void
|
info_sharedlibrary_command (char *ignore, int from_tty)
|
info_sharedlibrary_command (char *ignore, int from_tty)
|
{
|
{
|
struct so_list *so = NULL; /* link map state variable */
|
struct so_list *so = NULL; /* link map state variable */
|
int header_done = 0;
|
int header_done = 0;
|
int addr_width;
|
int addr_width;
|
|
|
/* "0x", a little whitespace, and two hex digits per byte of pointers. */
|
/* "0x", a little whitespace, and two hex digits per byte of pointers. */
|
addr_width = 4 + (gdbarch_ptr_bit (current_gdbarch) / 4);
|
addr_width = 4 + (gdbarch_ptr_bit (current_gdbarch) / 4);
|
|
|
update_solib_list (from_tty, 0);
|
update_solib_list (from_tty, 0);
|
|
|
for (so = so_list_head; so; so = so->next)
|
for (so = so_list_head; so; so = so->next)
|
{
|
{
|
if (so->so_name[0])
|
if (so->so_name[0])
|
{
|
{
|
if (!header_done)
|
if (!header_done)
|
{
|
{
|
printf_unfiltered ("%-*s%-*s%-12s%s\n", addr_width, "From",
|
printf_unfiltered ("%-*s%-*s%-12s%s\n", addr_width, "From",
|
addr_width, "To", "Syms Read",
|
addr_width, "To", "Syms Read",
|
"Shared Object Library");
|
"Shared Object Library");
|
header_done++;
|
header_done++;
|
}
|
}
|
|
|
printf_unfiltered ("%-*s", addr_width,
|
printf_unfiltered ("%-*s", addr_width,
|
so->addr_high != 0
|
so->addr_high != 0
|
? hex_string_custom (
|
? hex_string_custom (
|
(LONGEST) so->addr_low,
|
(LONGEST) so->addr_low,
|
addr_width - 4)
|
addr_width - 4)
|
: "");
|
: "");
|
printf_unfiltered ("%-*s", addr_width,
|
printf_unfiltered ("%-*s", addr_width,
|
so->addr_high != 0
|
so->addr_high != 0
|
? hex_string_custom (
|
? hex_string_custom (
|
(LONGEST) so->addr_high,
|
(LONGEST) so->addr_high,
|
addr_width - 4)
|
addr_width - 4)
|
: "");
|
: "");
|
printf_unfiltered ("%-12s", so->symbols_loaded ? "Yes" : "No");
|
printf_unfiltered ("%-12s", so->symbols_loaded ? "Yes" : "No");
|
printf_unfiltered ("%s\n", so->so_name);
|
printf_unfiltered ("%s\n", so->so_name);
|
}
|
}
|
}
|
}
|
if (so_list_head == NULL)
|
if (so_list_head == NULL)
|
{
|
{
|
printf_unfiltered (_("No shared libraries loaded at this time.\n"));
|
printf_unfiltered (_("No shared libraries loaded at this time.\n"));
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
|
|
GLOBAL FUNCTION
|
GLOBAL FUNCTION
|
|
|
solib_address -- check to see if an address is in a shared lib
|
solib_address -- check to see if an address is in a shared lib
|
|
|
SYNOPSIS
|
SYNOPSIS
|
|
|
char * solib_address (CORE_ADDR address)
|
char * solib_address (CORE_ADDR address)
|
|
|
DESCRIPTION
|
DESCRIPTION
|
|
|
Provides a hook for other gdb routines to discover whether or
|
Provides a hook for other gdb routines to discover whether or
|
not a particular address is within the mapped address space of
|
not a particular address is within the mapped address space of
|
a shared library.
|
a shared library.
|
|
|
For example, this routine is called at one point to disable
|
For example, this routine is called at one point to disable
|
breakpoints which are in shared libraries that are not currently
|
breakpoints which are in shared libraries that are not currently
|
mapped in.
|
mapped in.
|
*/
|
*/
|
|
|
char *
|
char *
|
solib_address (CORE_ADDR address)
|
solib_address (CORE_ADDR address)
|
{
|
{
|
struct so_list *so = 0; /* link map state variable */
|
struct so_list *so = 0; /* link map state variable */
|
|
|
for (so = so_list_head; so; so = so->next)
|
for (so = so_list_head; so; so = so->next)
|
{
|
{
|
struct section_table *p;
|
struct section_table *p;
|
|
|
for (p = so->sections; p < so->sections_end; p++)
|
for (p = so->sections; p < so->sections_end; p++)
|
{
|
{
|
if (p->addr <= address && address < p->endaddr)
|
if (p->addr <= address && address < p->endaddr)
|
return (so->so_name);
|
return (so->so_name);
|
}
|
}
|
}
|
}
|
|
|
return (0);
|
return (0);
|
}
|
}
|
|
|
/* Called by free_all_symtabs */
|
/* Called by free_all_symtabs */
|
|
|
void
|
void
|
clear_solib (void)
|
clear_solib (void)
|
{
|
{
|
struct target_so_ops *ops = solib_ops (current_gdbarch);
|
struct target_so_ops *ops = solib_ops (current_gdbarch);
|
|
|
/* This function is expected to handle ELF shared libraries. It is
|
/* This function is expected to handle ELF shared libraries. It is
|
also used on Solaris, which can run either ELF or a.out binaries
|
also used on Solaris, which can run either ELF or a.out binaries
|
(for compatibility with SunOS 4), both of which can use shared
|
(for compatibility with SunOS 4), both of which can use shared
|
libraries. So we don't know whether we have an ELF executable or
|
libraries. So we don't know whether we have an ELF executable or
|
an a.out executable until the user chooses an executable file.
|
an a.out executable until the user chooses an executable file.
|
|
|
ELF shared libraries don't get mapped into the address space
|
ELF shared libraries don't get mapped into the address space
|
until after the program starts, so we'd better not try to insert
|
until after the program starts, so we'd better not try to insert
|
breakpoints in them immediately. We have to wait until the
|
breakpoints in them immediately. We have to wait until the
|
dynamic linker has loaded them; we'll hit a bp_shlib_event
|
dynamic linker has loaded them; we'll hit a bp_shlib_event
|
breakpoint (look for calls to create_solib_event_breakpoint) when
|
breakpoint (look for calls to create_solib_event_breakpoint) when
|
it's ready.
|
it's ready.
|
|
|
SunOS shared libraries seem to be different --- they're present
|
SunOS shared libraries seem to be different --- they're present
|
as soon as the process begins execution, so there's no need to
|
as soon as the process begins execution, so there's no need to
|
put off inserting breakpoints. There's also nowhere to put a
|
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
|
bp_shlib_event breakpoint, so if we put it off, we'll never get
|
around to it.
|
around to it.
|
|
|
So: disable breakpoints only if we're using ELF shared libs. */
|
So: disable breakpoints only if we're using ELF shared libs. */
|
if (exec_bfd != NULL
|
if (exec_bfd != NULL
|
&& bfd_get_flavour (exec_bfd) != bfd_target_aout_flavour)
|
&& bfd_get_flavour (exec_bfd) != bfd_target_aout_flavour)
|
disable_breakpoints_in_shlibs ();
|
disable_breakpoints_in_shlibs ();
|
|
|
while (so_list_head)
|
while (so_list_head)
|
{
|
{
|
struct so_list *so = so_list_head;
|
struct so_list *so = so_list_head;
|
so_list_head = so->next;
|
so_list_head = so->next;
|
if (so->abfd)
|
if (so->abfd)
|
remove_target_sections (so->abfd);
|
remove_target_sections (so->abfd);
|
free_so (so);
|
free_so (so);
|
}
|
}
|
|
|
ops->clear_solib ();
|
ops->clear_solib ();
|
}
|
}
|
|
|
/* GLOBAL FUNCTION
|
/* GLOBAL FUNCTION
|
|
|
solib_create_inferior_hook -- shared library startup support
|
solib_create_inferior_hook -- shared library startup support
|
|
|
SYNOPSIS
|
SYNOPSIS
|
|
|
void solib_create_inferior_hook ()
|
void solib_create_inferior_hook ()
|
|
|
DESCRIPTION
|
DESCRIPTION
|
|
|
When gdb starts up the inferior, it nurses it along (through the
|
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
|
shell) until it is ready to execute it's first instruction. At this
|
point, this function gets called via expansion of the macro
|
point, this function gets called via expansion of the macro
|
SOLIB_CREATE_INFERIOR_HOOK. */
|
SOLIB_CREATE_INFERIOR_HOOK. */
|
|
|
void
|
void
|
solib_create_inferior_hook (void)
|
solib_create_inferior_hook (void)
|
{
|
{
|
struct target_so_ops *ops = solib_ops (current_gdbarch);
|
struct target_so_ops *ops = solib_ops (current_gdbarch);
|
ops->solib_create_inferior_hook();
|
ops->solib_create_inferior_hook();
|
}
|
}
|
|
|
/* GLOBAL FUNCTION
|
/* GLOBAL FUNCTION
|
|
|
in_solib_dynsym_resolve_code -- check to see if an address is in
|
in_solib_dynsym_resolve_code -- check to see if an address is in
|
dynamic loader's dynamic symbol
|
dynamic loader's dynamic symbol
|
resolution code
|
resolution code
|
|
|
SYNOPSIS
|
SYNOPSIS
|
|
|
int in_solib_dynsym_resolve_code (CORE_ADDR pc)
|
int in_solib_dynsym_resolve_code (CORE_ADDR pc)
|
|
|
DESCRIPTION
|
DESCRIPTION
|
|
|
Determine if PC is in the dynamic linker's symbol resolution
|
Determine if PC is in the dynamic linker's symbol resolution
|
code. Return 1 if so, 0 otherwise.
|
code. Return 1 if so, 0 otherwise.
|
*/
|
*/
|
|
|
int
|
int
|
in_solib_dynsym_resolve_code (CORE_ADDR pc)
|
in_solib_dynsym_resolve_code (CORE_ADDR pc)
|
{
|
{
|
struct target_so_ops *ops = solib_ops (current_gdbarch);
|
struct target_so_ops *ops = solib_ops (current_gdbarch);
|
return ops->in_dynsym_resolve_code (pc);
|
return ops->in_dynsym_resolve_code (pc);
|
}
|
}
|
|
|
/*
|
/*
|
|
|
LOCAL FUNCTION
|
LOCAL FUNCTION
|
|
|
sharedlibrary_command -- handle command to explicitly add library
|
sharedlibrary_command -- handle command to explicitly add library
|
|
|
SYNOPSIS
|
SYNOPSIS
|
|
|
static void sharedlibrary_command (char *args, int from_tty)
|
static void sharedlibrary_command (char *args, int from_tty)
|
|
|
DESCRIPTION
|
DESCRIPTION
|
|
|
*/
|
*/
|
|
|
static void
|
static void
|
sharedlibrary_command (char *args, int from_tty)
|
sharedlibrary_command (char *args, int from_tty)
|
{
|
{
|
dont_repeat ();
|
dont_repeat ();
|
solib_add (args, from_tty, (struct target_ops *) 0, 1);
|
solib_add (args, from_tty, (struct target_ops *) 0, 1);
|
}
|
}
|
|
|
/* LOCAL FUNCTION
|
/* LOCAL FUNCTION
|
|
|
no_shared_libraries -- handle command to explicitly discard symbols
|
no_shared_libraries -- handle command to explicitly discard symbols
|
from shared libraries.
|
from shared libraries.
|
|
|
DESCRIPTION
|
DESCRIPTION
|
|
|
Implements the command "nosharedlibrary", which discards symbols
|
Implements the command "nosharedlibrary", which discards symbols
|
that have been auto-loaded from shared libraries. Symbols from
|
that have been auto-loaded from shared libraries. Symbols from
|
shared libraries that were added by explicit request of the user
|
shared libraries that were added by explicit request of the user
|
are not discarded. Also called from remote.c. */
|
are not discarded. Also called from remote.c. */
|
|
|
void
|
void
|
no_shared_libraries (char *ignored, int from_tty)
|
no_shared_libraries (char *ignored, int from_tty)
|
{
|
{
|
objfile_purge_solibs ();
|
objfile_purge_solibs ();
|
clear_solib ();
|
clear_solib ();
|
}
|
}
|
|
|
static void
|
static void
|
reload_shared_libraries (char *ignored, int from_tty,
|
reload_shared_libraries (char *ignored, int from_tty,
|
struct cmd_list_element *e)
|
struct cmd_list_element *e)
|
{
|
{
|
no_shared_libraries (NULL, from_tty);
|
no_shared_libraries (NULL, from_tty);
|
solib_add (NULL, from_tty, NULL, auto_solib_add);
|
solib_add (NULL, from_tty, NULL, auto_solib_add);
|
}
|
}
|
|
|
static void
|
static void
|
show_auto_solib_add (struct ui_file *file, int from_tty,
|
show_auto_solib_add (struct ui_file *file, int from_tty,
|
struct cmd_list_element *c, const char *value)
|
struct cmd_list_element *c, const char *value)
|
{
|
{
|
fprintf_filtered (file, _("Autoloading of shared library symbols is %s.\n"),
|
fprintf_filtered (file, _("Autoloading of shared library symbols is %s.\n"),
|
value);
|
value);
|
}
|
}
|
|
|
|
|
/* Handler for library-specific lookup of global symbol NAME in OBJFILE. Call
|
/* Handler for library-specific lookup of global symbol NAME in OBJFILE. Call
|
the library-specific handler if it is installed for the current target. */
|
the library-specific handler if it is installed for the current target. */
|
|
|
struct symbol *
|
struct symbol *
|
solib_global_lookup (const struct objfile *objfile,
|
solib_global_lookup (const struct objfile *objfile,
|
const char *name,
|
const char *name,
|
const char *linkage_name,
|
const char *linkage_name,
|
const domain_enum domain,
|
const domain_enum domain,
|
struct symtab **symtab)
|
struct symtab **symtab)
|
{
|
{
|
struct target_so_ops *ops = solib_ops (current_gdbarch);
|
struct target_so_ops *ops = solib_ops (current_gdbarch);
|
|
|
if (ops->lookup_lib_global_symbol != NULL)
|
if (ops->lookup_lib_global_symbol != NULL)
|
return ops->lookup_lib_global_symbol (objfile, name, linkage_name,
|
return ops->lookup_lib_global_symbol (objfile, name, linkage_name,
|
domain, symtab);
|
domain, symtab);
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
|
|
extern initialize_file_ftype _initialize_solib; /* -Wmissing-prototypes */
|
extern initialize_file_ftype _initialize_solib; /* -Wmissing-prototypes */
|
|
|
void
|
void
|
_initialize_solib (void)
|
_initialize_solib (void)
|
{
|
{
|
struct cmd_list_element *c;
|
struct cmd_list_element *c;
|
|
|
solib_data = gdbarch_data_register_pre_init (solib_init);
|
solib_data = gdbarch_data_register_pre_init (solib_init);
|
|
|
add_com ("sharedlibrary", class_files, sharedlibrary_command,
|
add_com ("sharedlibrary", class_files, sharedlibrary_command,
|
_("Load shared object library symbols for files matching REGEXP."));
|
_("Load shared object library symbols for files matching REGEXP."));
|
add_info ("sharedlibrary", info_sharedlibrary_command,
|
add_info ("sharedlibrary", info_sharedlibrary_command,
|
_("Status of loaded shared object libraries."));
|
_("Status of loaded shared object libraries."));
|
add_com ("nosharedlibrary", class_files, no_shared_libraries,
|
add_com ("nosharedlibrary", class_files, no_shared_libraries,
|
_("Unload all shared object library symbols."));
|
_("Unload all shared object library symbols."));
|
|
|
add_setshow_boolean_cmd ("auto-solib-add", class_support,
|
add_setshow_boolean_cmd ("auto-solib-add", class_support,
|
&auto_solib_add, _("\
|
&auto_solib_add, _("\
|
Set autoloading of shared library symbols."), _("\
|
Set autoloading of shared library symbols."), _("\
|
Show autoloading of shared library symbols."), _("\
|
Show autoloading of shared library symbols."), _("\
|
If \"on\", symbols from all shared object libraries will be loaded\n\
|
If \"on\", symbols from all shared object libraries will be loaded\n\
|
automatically when the inferior begins execution, when the dynamic linker\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\
|
informs gdb that a new library has been loaded, or when attaching to the\n\
|
inferior. Otherwise, symbols must be loaded manually, using `sharedlibrary'."),
|
inferior. Otherwise, symbols must be loaded manually, using `sharedlibrary'."),
|
NULL,
|
NULL,
|
show_auto_solib_add,
|
show_auto_solib_add,
|
&setlist, &showlist);
|
&setlist, &showlist);
|
|
|
add_setshow_filename_cmd ("sysroot", class_support,
|
add_setshow_filename_cmd ("sysroot", class_support,
|
&gdb_sysroot, _("\
|
&gdb_sysroot, _("\
|
Set an alternate system root."), _("\
|
Set an alternate system root."), _("\
|
Show the current system root."), _("\
|
Show the current system root."), _("\
|
The system root is used to load absolute shared library symbol files.\n\
|
The system root is used to load absolute shared library symbol files.\n\
|
For other (relative) files, you can add directories using\n\
|
For other (relative) files, you can add directories using\n\
|
`set solib-search-path'."),
|
`set solib-search-path'."),
|
reload_shared_libraries,
|
reload_shared_libraries,
|
NULL,
|
NULL,
|
&setlist, &showlist);
|
&setlist, &showlist);
|
|
|
add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0,
|
add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0,
|
&setlist);
|
&setlist);
|
add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0,
|
add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0,
|
&showlist);
|
&showlist);
|
|
|
add_setshow_optional_filename_cmd ("solib-search-path", class_support,
|
add_setshow_optional_filename_cmd ("solib-search-path", class_support,
|
&solib_search_path, _("\
|
&solib_search_path, _("\
|
Set the search path for loading non-absolute shared library symbol files."), _("\
|
Set the search path for loading non-absolute shared library symbol files."), _("\
|
Show the search path for loading non-absolute shared library symbol files."), _("\
|
Show the search path for loading non-absolute shared library symbol files."), _("\
|
This takes precedence over the environment variables PATH and LD_LIBRARY_PATH."),
|
This takes precedence over the environment variables PATH and LD_LIBRARY_PATH."),
|
reload_shared_libraries,
|
reload_shared_libraries,
|
show_solib_search_path,
|
show_solib_search_path,
|
&setlist, &showlist);
|
&setlist, &showlist);
|
}
|
}
|
|
|
