gdb/gdb-autoload-09of18.patch

[patch#4 3/8] auto-load: reshuffle code
http://sourceware.org/ml/gdb-patches/2012-04/msg00087.html
http://sourceware.org/ml/gdb-cvs/2012-04/msg00112.html

Index: gdb-7.4.50.20120120/gdb/auto-load.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ gdb-7.4.50.20120120/gdb/auto-load.c	2012-04-18 00:26:29.049120212 +0200
@@ -0,0 +1,472 @@
+/* GDB routines for supporting auto-loaded scripts.
+
+   Copyright (C) 2012 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "defs.h"
+#include "auto-load.h"
+#include "progspace.h"
+#include "python/python.h"
+#include "gdb_regex.h"
+#include "ui-out.h"
+#include "filenames.h"
+#include "command.h"
+#include "observer.h"
+#include "objfiles.h"
+#include "python/python-internal.h"
+
+/* Internal-use flag to enable/disable auto-loading.
+   This is true if we should auto-load python code when an objfile is opened,
+   false otherwise.
+
+   Both auto_load_scripts && gdbpy_global_auto_load must be true to enable
+   auto-loading.
+
+   This flag exists to facilitate deferring auto-loading during start-up
+   until after ./.gdbinit has been read; it may augment the search directories
+   used to find the scripts.  */
+int gdbpy_global_auto_load = 1;
+
+/* For scripts specified in .debug_gdb_scripts, multiple objfiles may load
+   the same script.  There's no point in loading the script multiple times,
+   and there can be a lot of objfiles and scripts, so we keep track of scripts
+   loaded this way.  */
+
+struct auto_load_pspace_info
+{
+  /* For each program space we keep track of loaded scripts.  */
+  struct htab *loaded_scripts;
+
+  /* Non-zero if we've issued the warning about an auto-load script not being
+     found.  We only want to issue this warning once.  */
+  int script_not_found_warning_printed;
+};
+
+/* Objects of this type are stored in the loaded script hash table.  */
+
+struct loaded_script
+{
+  /* Name as provided by the objfile.  */
+  const char *name;
+  /* Full path name or NULL if script wasn't found (or was otherwise
+     inaccessible).  */
+  const char *full_path;
+};
+
+/* Per-program-space data key.  */
+static const struct program_space_data *auto_load_pspace_data;
+
+static void
+auto_load_pspace_data_cleanup (struct program_space *pspace, void *arg)
+{
+  struct auto_load_pspace_info *info;
+
+  info = program_space_data (pspace, auto_load_pspace_data);
+  if (info != NULL)
+    {
+      if (info->loaded_scripts)
+	htab_delete (info->loaded_scripts);
+      xfree (info);
+    }
+}
+
+/* Get the current autoload data.  If none is found yet, add it now.  This
+   function always returns a valid object.  */
+
+static struct auto_load_pspace_info *
+get_auto_load_pspace_data (struct program_space *pspace)
+{
+  struct auto_load_pspace_info *info;
+
+  info = program_space_data (pspace, auto_load_pspace_data);
+  if (info == NULL)
+    {
+      info = XZALLOC (struct auto_load_pspace_info);
+      set_program_space_data (pspace, auto_load_pspace_data, info);
+    }
+
+  return info;
+}
+
+/* Hash function for the loaded script hash.  */
+
+static hashval_t
+hash_loaded_script_entry (const void *data)
+{
+  const struct loaded_script *e = data;
+
+  return htab_hash_string (e->name);
+}
+
+/* Equality function for the loaded script hash.  */
+
+static int
+eq_loaded_script_entry (const void *a, const void *b)
+{
+  const struct loaded_script *ea = a;
+  const struct loaded_script *eb = b;
+
+  return strcmp (ea->name, eb->name) == 0;
+}
+
+/* Initialize the table to track loaded scripts.
+   Each entry is hashed by the full path name.  */
+
+static void
+init_loaded_scripts_info (struct auto_load_pspace_info *pspace_info)
+{
+  /* Choose 31 as the starting size of the hash table, somewhat arbitrarily.
+     Space for each entry is obtained with one malloc so we can free them
+     easily.  */
+
+  pspace_info->loaded_scripts = htab_create (31,
+					     hash_loaded_script_entry,
+					     eq_loaded_script_entry,
+					     xfree);
+
+  pspace_info->script_not_found_warning_printed = FALSE;
+}
+
+/* Wrapper on get_auto_load_pspace_data to also allocate the hash table
+   for loading scripts.  */
+
+struct auto_load_pspace_info *
+get_auto_load_pspace_data_for_loading (struct program_space *pspace)
+{
+  struct auto_load_pspace_info *info;
+
+  info = get_auto_load_pspace_data (pspace);
+  if (info->loaded_scripts == NULL)
+    init_loaded_scripts_info (info);
+
+  return info;
+}
+
+/* Add script NAME to hash table of PSPACE_INFO.
+   FULL_PATH is NULL if the script wasn't found.
+   The result is true if the script was already in the hash table.  */
+
+int
+maybe_add_script (struct auto_load_pspace_info *pspace_info, const char *name,
+		  const char *full_path)
+{
+  struct htab *htab = pspace_info->loaded_scripts;
+  struct loaded_script **slot, entry;
+  int in_hash_table;
+
+  entry.name = name;
+  entry.full_path = full_path;
+  slot = (struct loaded_script **) htab_find_slot (htab, &entry, INSERT);
+  in_hash_table = *slot != NULL;
+
+  /* If this script is not in the hash table, add it.  */
+
+  if (! in_hash_table)
+    {
+      char *p;
+
+      /* Allocate all space in one chunk so it's easier to free.  */
+      *slot = xmalloc (sizeof (**slot)
+		       + strlen (name) + 1
+		       + (full_path != NULL ? (strlen (full_path) + 1) : 0));
+      p = ((char*) *slot) + sizeof (**slot);
+      strcpy (p, name);
+      (*slot)->name = p;
+      if (full_path != NULL)
+	{
+	  p += strlen (p) + 1;
+	  strcpy (p, full_path);
+	  (*slot)->full_path = p;
+	}
+      else
+	(*slot)->full_path = NULL;
+    }
+
+  return in_hash_table;
+}
+
+/* Clear the table of loaded section scripts.  */
+
+static void
+clear_section_scripts (void)
+{
+  struct program_space *pspace = current_program_space;
+  struct auto_load_pspace_info *info;
+
+  info = program_space_data (pspace, auto_load_pspace_data);
+  if (info != NULL && info->loaded_scripts != NULL)
+    {
+      htab_delete (info->loaded_scripts);
+      info->loaded_scripts = NULL;
+      info->script_not_found_warning_printed = FALSE;
+    }
+}
+
+/* Look for the auto-load script associated with OBJFILE and load it.  */
+
+void
+auto_load_objfile_script (struct objfile *objfile, const char *suffix)
+{
+  char *realname;
+  char *filename, *debugfile;
+  int len;
+  FILE *input;
+  struct cleanup *cleanups;
+
+  realname = gdb_realpath (objfile->name);
+  len = strlen (realname);
+  filename = xmalloc (len + strlen (suffix) + 1);
+  memcpy (filename, realname, len);
+  strcpy (filename + len, suffix);
+
+  cleanups = make_cleanup (xfree, filename);
+  make_cleanup (xfree, realname);
+
+  input = fopen (filename, "r");
+  debugfile = filename;
+
+  if (!input && debug_file_directory)
+    {
+      /* Also try the same file in the separate debug info directory.  */
+      debugfile = xmalloc (strlen (filename)
+			   + strlen (debug_file_directory) + 1);
+      strcpy (debugfile, debug_file_directory);
+      /* FILENAME is absolute, so we don't need a "/" here.  */
+      strcat (debugfile, filename);
+
+      make_cleanup (xfree, debugfile);
+      input = fopen (debugfile, "r");
+    }
+
+  if (!input && gdb_datadir)
+    {
+      /* Also try the same file in a subdirectory of gdb's data
+	 directory.  */
+      debugfile = xmalloc (strlen (gdb_datadir) + strlen (filename)
+			   + strlen ("/auto-load") + 1);
+      strcpy (debugfile, gdb_datadir);
+      strcat (debugfile, "/auto-load");
+      /* FILENAME is absolute, so we don't need a "/" here.  */
+      strcat (debugfile, filename);
+
+      make_cleanup (xfree, debugfile);
+      input = fopen (debugfile, "r");
+    }
+
+  if (input)
+    {
+      struct auto_load_pspace_info *pspace_info;
+
+      make_cleanup_fclose (input);
+
+      /* Add this script to the hash table too so "info auto-load-scripts"
+	 can print it.  */
+      pspace_info =
+	get_auto_load_pspace_data_for_loading (current_program_space);
+      maybe_add_script (pspace_info, debugfile, debugfile);
+
+      /* To preserve existing behaviour we don't check for whether the
+	 script was already in the table, and always load it.
+	 It's highly unlikely that we'd ever load it twice,
+	 and these scripts are required to be idempotent under multiple
+	 loads anyway.  */
+      source_python_script_for_objfile (objfile, input, debugfile);
+    }
+
+  do_cleanups (cleanups);
+}
+
+/* This is a new_objfile observer callback to auto-load scripts.
+
+   Two flavors of auto-loaded scripts are supported.
+   1) based on the path to the objfile
+   2) from .debug_gdb_scripts section  */
+
+static void
+auto_load_new_objfile (struct objfile *objfile)
+{
+  if (!objfile)
+    {
+      /* OBJFILE is NULL when loading a new "main" symbol-file.  */
+      clear_section_scripts ();
+      return;
+    }
+
+  load_auto_scripts_for_objfile (objfile);
+}
+
+/* Collect scripts to be printed in a vec.  */
+
+typedef struct loaded_script *loaded_script_ptr;
+DEF_VEC_P (loaded_script_ptr);
+
+/* Traversal function for htab_traverse.
+   Collect the entry if it matches the regexp.  */
+
+static int
+collect_matching_scripts (void **slot, void *info)
+{
+  struct loaded_script *script = *slot;
+  VEC (loaded_script_ptr) **scripts_ptr = info;
+
+  if (re_exec (script->name))
+    VEC_safe_push (loaded_script_ptr, *scripts_ptr, script);
+
+  return 1;
+}
+
+/* Print SCRIPT.  */
+
+static void
+print_script (struct loaded_script *script)
+{
+  struct ui_out *uiout = current_uiout;
+  struct cleanup *chain;
+
+  chain = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
+
+  ui_out_field_string (uiout, "loaded", script->full_path ? "Yes" : "Missing");
+  ui_out_field_string (uiout, "script", script->name);
+  ui_out_text (uiout, "\n");
+
+  /* If the name isn't the full path, print it too.  */
+  if (script->full_path != NULL
+      && strcmp (script->name, script->full_path) != 0)
+    {
+      ui_out_text (uiout, "\tfull name: ");
+      ui_out_field_string (uiout, "full_path", script->full_path);
+      ui_out_text (uiout, "\n");
+    }
+
+  do_cleanups (chain);
+}
+
+/* Helper for info_auto_load_scripts to sort the scripts by name.  */
+
+static int
+sort_scripts_by_name (const void *ap, const void *bp)
+{
+  const struct loaded_script *a = *(const struct loaded_script **) ap;
+  const struct loaded_script *b = *(const struct loaded_script **) bp;
+
+  return FILENAME_CMP (a->name, b->name);
+}
+
+/* "info auto-load-scripts" command.  */
+
+static void
+info_auto_load_scripts (char *pattern, int from_tty)
+{
+  struct ui_out *uiout = current_uiout;
+  struct auto_load_pspace_info *pspace_info;
+  struct cleanup *script_chain;
+  VEC (loaded_script_ptr) *scripts;
+  int nr_scripts;
+
+  dont_repeat ();
+
+  pspace_info = get_auto_load_pspace_data (current_program_space);
+
+  if (pattern && *pattern)
+    {
+      char *re_err = re_comp (pattern);
+
+      if (re_err)
+	error (_("Invalid regexp: %s"), re_err);
+    }
+  else
+    {
+      re_comp ("");
+    }
+
+  /* We need to know the number of rows before we build the table.
+     Plus we want to sort the scripts by name.
+     So first traverse the hash table collecting the matching scripts.  */
+
+  scripts = VEC_alloc (loaded_script_ptr, 10);
+  script_chain = make_cleanup (VEC_cleanup (loaded_script_ptr), &scripts);
+
+  if (pspace_info != NULL && pspace_info->loaded_scripts != NULL)
+    {
+      immediate_quit++;
+      /* Pass a pointer to scripts as VEC_safe_push can realloc space.  */
+      htab_traverse_noresize (pspace_info->loaded_scripts,
+			      collect_matching_scripts, &scripts);
+      immediate_quit--;
+    }
+
+  nr_scripts = VEC_length (loaded_script_ptr, scripts);
+  make_cleanup_ui_out_table_begin_end (uiout, 2, nr_scripts,
+				       "AutoLoadedScriptsTable");
+
+  ui_out_table_header (uiout, 7, ui_left, "loaded", "Loaded");
+  ui_out_table_header (uiout, 70, ui_left, "script", "Script");
+  ui_out_table_body (uiout);
+
+  if (nr_scripts > 0)
+    {
+      int i;
+      loaded_script_ptr script;
+
+      qsort (VEC_address (loaded_script_ptr, scripts),
+	     VEC_length (loaded_script_ptr, scripts),
+	     sizeof (loaded_script_ptr), sort_scripts_by_name);
+      for (i = 0; VEC_iterate (loaded_script_ptr, scripts, i, script); ++i)
+	print_script (script);
+    }
+
+  do_cleanups (script_chain);
+
+  if (nr_scripts == 0)
+    {
+      if (pattern && *pattern)
+	ui_out_message (uiout, 0, "No auto-load scripts matching %s.\n",
+			pattern);
+      else
+	ui_out_message (uiout, 0, "No auto-load scripts.\n");
+    }
+}
+
+/* Return non-zero if SCRIPT_NOT_FOUND_WARNING_PRINTED of PSPACE_INFO was unset
+   before calling this function.  Always set SCRIPT_NOT_FOUND_WARNING_PRINTED
+   of PSPACE_INFO.  */
+
+int
+script_not_found_warning_print (struct auto_load_pspace_info *pspace_info)
+{
+  int retval = !pspace_info->script_not_found_warning_printed;
+
+  pspace_info->script_not_found_warning_printed = 1;
+
+  return retval;
+}
+
+void _initialize_auto_load (void);
+
+void
+_initialize_auto_load (void)
+{
+  auto_load_pspace_data
+    = register_program_space_data_with_cleanup (auto_load_pspace_data_cleanup);
+
+  observer_attach_new_objfile (auto_load_new_objfile);
+
+  add_info ("auto-load-scripts",
+	    info_auto_load_scripts,
+	    _("Print the list of automatically loaded scripts.\n\
+Usage: info auto-load-scripts [REGEXP]"));
+}
Index: gdb-7.4.50.20120120/gdb/auto-load.h
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ gdb-7.4.50.20120120/gdb/auto-load.h	2012-04-18 00:26:29.049120212 +0200
@@ -0,0 +1,36 @@
+/* GDB routines for supporting auto-loaded scripts.
+
+   Copyright (C) 2012 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef AUTO_LOAD_H
+#define AUTO_LOAD_H 1
+
+struct program_space;
+
+extern int gdbpy_global_auto_load;
+
+extern struct auto_load_pspace_info *
+  get_auto_load_pspace_data_for_loading (struct program_space *pspace);
+extern int maybe_add_script (struct auto_load_pspace_info *pspace_info,
+			     const char *name, const char *full_path);
+extern void auto_load_objfile_script (struct objfile *objfile,
+				      const char *suffix);
+extern int
+  script_not_found_warning_print (struct auto_load_pspace_info *pspace_info);
+
+#endif /* AUTO_LOAD_H */
Index: gdb-7.4.50.20120120/gdb/gdb-gdb.gdb.in
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ gdb-7.4.50.20120120/gdb/gdb-gdb.gdb.in	2012-04-18 00:26:29.049120212 +0200
@@ -0,0 +1,34 @@
+echo Setting up the environment for debugging gdb.\n
+
+set complaints 1
+
+b internal_error
+
+b info_command
+commands
+	silent
+	return
+end
+
+dir @srcdir@/../libiberty
+dir @srcdir@/../bfd
+dir @srcdir@
+dir .
+set prompt (top-gdb) 
+
+define pdie
+  if $argc == 1
+    call dump_die ($arg0, 1)
+  else
+    if $argc == 2
+      call dump_die ($arg0, $arg1)
+    else
+      printf "Syntax: pdie die [depth]\n"
+    end
+  end
+end
+
+document pdie
+Pretty print a DWARF DIE.
+Syntax: pdie die [depth]
+end
Index: gdb-7.4.50.20120120/gdb/Makefile.in
===================================================================
--- gdb-7.4.50.20120120.orig/gdb/Makefile.in	2012-04-18 00:26:14.000000000 +0200
+++ gdb-7.4.50.20120120/gdb/Makefile.in	2012-04-18 00:26:53.455058037 +0200
@@ -680,7 +680,7 @@ TARGET_FLAGS_TO_PASS = \
 # SFILES is used in building the distribution archive.
 
 SFILES = ada-exp.y ada-lang.c ada-typeprint.c ada-valprint.c ada-tasks.c \
-	addrmap.c \
+	addrmap.c auto-load.c \
 	auxv.c ax-general.c ax-gdb.c \
 	bcache.c \
 	bfd-target.c \
@@ -819,7 +819,7 @@ solib-darwin.h solib-ia64-hpux.h solib-s
 gnulib/extra/arg-nonnull.h gnulib/extra/c++defs.h gnulib/extra/warn-on-use.h \
 gnulib/stddef.in.h inline-frame.h skip.h stap-probe.h \
 common/common-utils.h common/xml-utils.h common/buffer.h common/ptid.h \
-common/linux-osdata.h gdb-dlfcn.h
+common/linux-osdata.h gdb-dlfcn.h auto-load.h
 
 # Header files that already have srcdir in them, or which are in objdir.
 
@@ -851,7 +851,7 @@ COMMON_OBS = $(DEPFILES) $(CONFIG_OBS) $
 	version.o \
 	annotate.o \
 	addrmap.o \
-	auxv.o \
+	auto-load.o auxv.o \
 	bfd-target.o \
 	blockframe.o breakpoint.o findvar.o regcache.o \
 	charset.o continuations.o corelow.o disasm.o dummy-frame.o dfp.o \
@@ -1255,7 +1255,7 @@ distclean: clean
 	rm -f gdbserver/config.status gdbserver/config.log
 	rm -f gdbserver/tm.h gdbserver/xm.h gdbserver/nm.h
 	rm -f gdbserver/Makefile gdbserver/config.cache
-	rm -f nm.h config.status config.h stamp-h .gdbinit jit-reader.h
+	rm -f nm.h config.status config.h stamp-h gdb-gdb.gdb jit-reader.h
 	rm -f y.output yacc.acts yacc.tmp y.tab.h
 	rm -f config.log config.cache
 	rm -f Makefile
Index: gdb-7.4.50.20120120/gdb/configure
===================================================================
--- gdb-7.4.50.20120120.orig/gdb/configure	2012-04-18 00:26:14.000000000 +0200
+++ gdb-7.4.50.20120120/gdb/configure	2012-04-18 00:26:29.053120202 +0200
@@ -16839,7 +16839,7 @@ ac_config_links="$ac_config_links $ac_co
 $as_echo "#define GDB_DEFAULT_HOST_CHARSET \"UTF-8\"" >>confdefs.h
 
 
-ac_config_files="$ac_config_files Makefile .gdbinit:gdbinit.in doc/Makefile gnulib/Makefile data-directory/Makefile"
+ac_config_files="$ac_config_files Makefile gdb-gdb.gdb doc/Makefile gnulib/Makefile data-directory/Makefile"
 
 ac_config_commands="$ac_config_commands default"
 
@@ -17605,7 +17605,7 @@ do
     "jit-reader.h") CONFIG_FILES="$CONFIG_FILES jit-reader.h:jit-reader.in" ;;
     "$ac_config_links_1") CONFIG_LINKS="$CONFIG_LINKS $ac_config_links_1" ;;
     "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
-    ".gdbinit") CONFIG_FILES="$CONFIG_FILES .gdbinit:gdbinit.in" ;;
+    "gdb-gdb.gdb") CONFIG_FILES="$CONFIG_FILES gdb-gdb.gdb" ;;
     "doc/Makefile") CONFIG_FILES="$CONFIG_FILES doc/Makefile" ;;
     "gnulib/Makefile") CONFIG_FILES="$CONFIG_FILES gnulib/Makefile" ;;
     "data-directory/Makefile") CONFIG_FILES="$CONFIG_FILES data-directory/Makefile" ;;
Index: gdb-7.4.50.20120120/gdb/configure.ac
===================================================================
--- gdb-7.4.50.20120120.orig/gdb/configure.ac	2012-04-18 00:26:14.000000000 +0200
+++ gdb-7.4.50.20120120/gdb/configure.ac	2012-04-18 00:26:29.053120202 +0200
@@ -2422,7 +2422,7 @@ dnl  At the moment, we just assume it's
 AC_DEFINE(GDB_DEFAULT_HOST_CHARSET, "UTF-8",
           [Define to be a string naming the default host character set.])
 
-AC_OUTPUT(Makefile .gdbinit:gdbinit.in doc/Makefile gnulib/Makefile data-directory/Makefile,
+AC_OUTPUT(Makefile gdb-gdb.gdb doc/Makefile gnulib/Makefile data-directory/Makefile,
 [
 case x$CONFIG_HEADERS in
 xconfig.h:config.in)
Index: gdb-7.4.50.20120120/gdb/main.c
===================================================================
--- gdb-7.4.50.20120120.orig/gdb/main.c	2012-04-18 00:26:14.000000000 +0200
+++ gdb-7.4.50.20120120/gdb/main.c	2012-04-18 00:26:29.054120199 +0200
@@ -42,6 +42,7 @@
 #include "cli/cli-cmds.h"
 #include "python/python.h"
 #include "objfiles.h"
+#include "auto-load.h"
 
 /* The selected interpreter.  This will be used as a set command
    variable, so it should always be malloc'ed - since
Index: gdb-7.4.50.20120120/gdb/python/py-auto-load.c
===================================================================
--- gdb-7.4.50.20120120.orig/gdb/python/py-auto-load.c	2012-04-18 00:26:14.000000000 +0200
+++ gdb-7.4.50.20120120/gdb/python/py-auto-load.c	2012-04-18 00:26:29.054120199 +0200
@@ -18,30 +18,14 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "defs.h"
-#include "filenames.h"
 #include "gdb_string.h"
-#include "gdb_regex.h"
 #include "top.h"
 #include "exceptions.h"
-#include "command.h"
 #include "gdbcmd.h"
-#include "observer.h"
-#include "progspace.h"
 #include "objfiles.h"
 #include "python.h"
 #include "cli/cli-cmds.h"
-
-/* Internal-use flag to enable/disable auto-loading.
-   This is true if we should auto-load python code when an objfile is opened,
-   false otherwise.
-
-   Both auto_load_scripts && gdbpy_global_auto_load must be true to enable
-   auto-loading.
-
-   This flag exists to facilitate deferring auto-loading during start-up
-   until after ./.gdbinit has been read; it may augment the search directories
-   used to find the scripts.  */
-int gdbpy_global_auto_load = 1;
+#include "auto-load.h"
 
 #ifdef HAVE_PYTHON
 
@@ -60,32 +44,6 @@ int gdbpy_global_auto_load = 1;
    The leading byte is to allow upward compatible extensions.  */
 #define GDBPY_AUTO_SECTION_NAME ".debug_gdb_scripts"
 
-/* For scripts specified in .debug_gdb_scripts, multiple objfiles may load
-   the same script.  There's no point in loading the script multiple times,
-   and there can be a lot of objfiles and scripts, so we keep track of scripts
-   loaded this way.  */
-
-struct auto_load_pspace_info
-{
-  /* For each program space we keep track of loaded scripts.  */
-  struct htab *loaded_scripts;
-
-  /* Non-zero if we've issued the warning about an auto-load script not being
-     found.  We only want to issue this warning once.  */
-  int script_not_found_warning_printed;
-};
-
-/* Objects of this type are stored in the loaded script hash table.  */
-
-struct loaded_script
-{
-  /* Name as provided by the objfile.  */
-  const char *name;
-  /* Full path name or NULL if script wasn't found (or was otherwise
-     inaccessible).  */
-  const char *full_path;
-};
-
 /* User-settable option to enable/disable auto-loading:
    set auto-load-scripts on|off
    This is true if we should auto-load associated scripts when an objfile
@@ -97,136 +55,6 @@ struct loaded_script
    The fact that it lives here is just an implementation detail.  */
 static int auto_load_scripts = 1;
 
-/* Per-program-space data key.  */
-static const struct program_space_data *auto_load_pspace_data;
-
-static void
-auto_load_pspace_data_cleanup (struct program_space *pspace, void *arg)
-{
-  struct auto_load_pspace_info *info;
-
-  info = program_space_data (pspace, auto_load_pspace_data);
-  if (info != NULL)
-    {
-      if (info->loaded_scripts)
-	htab_delete (info->loaded_scripts);
-      xfree (info);
-    }
-}
-
-/* Get the current autoload data.  If none is found yet, add it now.  This
-   function always returns a valid object.  */
-
-static struct auto_load_pspace_info *
-get_auto_load_pspace_data (struct program_space *pspace)
-{
-  struct auto_load_pspace_info *info;
-
-  info = program_space_data (pspace, auto_load_pspace_data);
-  if (info == NULL)
-    {
-      info = XZALLOC (struct auto_load_pspace_info);
-      set_program_space_data (pspace, auto_load_pspace_data, info);
-    }
-
-  return info;
-}
-
-/* Hash function for the loaded script hash.  */
-
-static hashval_t
-hash_loaded_script_entry (const void *data)
-{
-  const struct loaded_script *e = data;
-
-  return htab_hash_string (e->name);
-}
-
-/* Equality function for the loaded script hash.  */
-
-static int
-eq_loaded_script_entry (const void *a, const void *b)
-{
-  const struct loaded_script *ea = a;
-  const struct loaded_script *eb = b;
-
-  return strcmp (ea->name, eb->name) == 0;
-}
-
-/* Initialize the table to track loaded scripts.
-   Each entry is hashed by the full path name.  */
-
-static void
-init_loaded_scripts_info (struct auto_load_pspace_info *pspace_info)
-{
-  /* Choose 31 as the starting size of the hash table, somewhat arbitrarily.
-     Space for each entry is obtained with one malloc so we can free them
-     easily.  */
-
-  pspace_info->loaded_scripts = htab_create (31,
-					     hash_loaded_script_entry,
-					     eq_loaded_script_entry,
-					     xfree);
-
-  pspace_info->script_not_found_warning_printed = FALSE;
-}
-
-/* Wrapper on get_auto_load_pspace_data to also allocate the hash table
-   for loading scripts.  */
-
-static struct auto_load_pspace_info *
-get_auto_load_pspace_data_for_loading (struct program_space *pspace)
-{
-  struct auto_load_pspace_info *info;
-
-  info = get_auto_load_pspace_data (pspace);
-  if (info->loaded_scripts == NULL)
-    init_loaded_scripts_info (info);
-
-  return info;
-}
-
-/* Add script NAME to hash table HTAB.
-   FULL_PATH is NULL if the script wasn't found.
-   The result is true if the script was already in the hash table.  */
-
-static int
-maybe_add_script (struct htab *htab, const char *name, const char *full_path)
-{
-  struct loaded_script **slot, entry;
-  int in_hash_table;
-
-  entry.name = name;
-  entry.full_path = full_path;
-  slot = (struct loaded_script **) htab_find_slot (htab, &entry, INSERT);
-  in_hash_table = *slot != NULL;
-
-  /* If this script is not in the hash table, add it.  */
-
-  if (! in_hash_table)
-    {
-      char *p;
-
-      /* Allocate all space in one chunk so it's easier to free.  */
-      *slot = xmalloc (sizeof (**slot)
-		       + strlen (name) + 1
-		       + (full_path != NULL ? (strlen (full_path) + 1) : 0));
-      p = ((char*) *slot) + sizeof (**slot);
-      strcpy (p, name);
-      (*slot)->name = p;
-      if (full_path != NULL)
-	{
-	  p += strlen (p) + 1;
-	  strcpy (p, full_path);
-	  (*slot)->full_path = p;
-	}
-      else
-	(*slot)->full_path = NULL;
-    }
-
-  return in_hash_table;
-}
-
 /* Load scripts specified in OBJFILE.
    START,END delimit a buffer containing a list of nul-terminated
    file names.
@@ -301,20 +129,17 @@ source_section_scripts (struct objfile *
 
 	 IWBN if complaints.c were more general-purpose.  */
 
-      in_hash_table = maybe_add_script (pspace_info->loaded_scripts, file,
+      in_hash_table = maybe_add_script (pspace_info, file,
 					opened ? full_path : NULL);
 
       if (! opened)
 	{
 	  /* We don't throw an error, the program is still debuggable.  */
-	  if (! pspace_info->script_not_found_warning_printed)
-	    {
-	      warning (_("Missing auto-load scripts referenced in section %s\n\
+	  if (script_not_found_warning_print (pspace_info))
+	    warning (_("Missing auto-load scripts referenced in section %s\n\
 of file %s\n\
 Use `info auto-load-scripts [REGEXP]' to list them."),
-		       GDBPY_AUTO_SECTION_NAME, objfile->name);
-	      pspace_info->script_not_found_warning_printed = TRUE;
-	    }
+		     GDBPY_AUTO_SECTION_NAME, objfile->name);
 	}
       else
 	{
@@ -356,116 +181,6 @@ auto_load_section_scripts (struct objfil
   do_cleanups (cleanups);
 }
 
-/* Clear the table of loaded section scripts.  */
-
-static void
-clear_section_scripts (void)
-{
-  struct program_space *pspace = current_program_space;
-  struct auto_load_pspace_info *info;
-
-  info = program_space_data (pspace, auto_load_pspace_data);
-  if (info != NULL && info->loaded_scripts != NULL)
-    {
-      htab_delete (info->loaded_scripts);
-      info->loaded_scripts = NULL;
-      info->script_not_found_warning_printed = FALSE;
-    }
-}
-
-/* Look for the auto-load script associated with OBJFILE and load it.  */
-
-static void
-auto_load_objfile_script (struct objfile *objfile, const char *suffix)
-{
-  char *realname;
-  char *filename, *debugfile;
-  int len;
-  FILE *input;
-  struct cleanup *cleanups;
-
-  realname = gdb_realpath (objfile->name);
-  len = strlen (realname);
-  filename = xmalloc (len + strlen (suffix) + 1);
-  memcpy (filename, realname, len);
-  strcpy (filename + len, suffix);
-
-  cleanups = make_cleanup (xfree, filename);
-  make_cleanup (xfree, realname);
-
-  input = fopen (filename, "r");
-  debugfile = filename;
-
-  if (!input && debug_file_directory)
-    {
-      /* Also try the same file in the separate debug info directory.  */
-      debugfile = xmalloc (strlen (filename)
-			   + strlen (debug_file_directory) + 1);
-      strcpy (debugfile, debug_file_directory);
-      /* FILENAME is absolute, so we don't need a "/" here.  */
-      strcat (debugfile, filename);
-
-      make_cleanup (xfree, debugfile);
-      input = fopen (debugfile, "r");
-    }
-
-  if (!input && gdb_datadir)
-    {
-      /* Also try the same file in a subdirectory of gdb's data
-	 directory.  */
-      debugfile = xmalloc (strlen (gdb_datadir) + strlen (filename)
-			   + strlen ("/auto-load") + 1);
-      strcpy (debugfile, gdb_datadir);
-      strcat (debugfile, "/auto-load");
-      /* FILENAME is absolute, so we don't need a "/" here.  */
-      strcat (debugfile, filename);
-
-      make_cleanup (xfree, debugfile);
-      input = fopen (debugfile, "r");
-    }
-
-  if (input)
-    {
-      struct auto_load_pspace_info *pspace_info;
-
-      make_cleanup_fclose (input);
-
-      /* Add this script to the hash table too so "info auto-load-scripts"
-	 can print it.  */
-      pspace_info =
-	get_auto_load_pspace_data_for_loading (current_program_space);
-      maybe_add_script (pspace_info->loaded_scripts, debugfile, debugfile);
-
-      /* To preserve existing behaviour we don't check for whether the
-	 script was already in the table, and always load it.
-	 It's highly unlikely that we'd ever load it twice,
-	 and these scripts are required to be idempotent under multiple
-	 loads anyway.  */
-      source_python_script_for_objfile (objfile, input, debugfile);
-    }
-
-  do_cleanups (cleanups);
-}
-
-/* This is a new_objfile observer callback to auto-load scripts.
-
-   Two flavors of auto-loaded scripts are supported.
-   1) based on the path to the objfile
-   2) from .debug_gdb_scripts section  */
-
-static void
-auto_load_new_objfile (struct objfile *objfile)
-{
-  if (!objfile)
-    {
-      /* OBJFILE is NULL when loading a new "main" symbol-file.  */
-      clear_section_scripts ();
-      return;
-    }
-
-  load_auto_scripts_for_objfile (objfile);
-}
-
 /* Load any auto-loaded scripts for OBJFILE.  */
 
 void
@@ -478,146 +193,9 @@ load_auto_scripts_for_objfile (struct ob
     }
 }
 
-/* Collect scripts to be printed in a vec.  */
-
-typedef struct loaded_script *loaded_script_ptr;
-DEF_VEC_P (loaded_script_ptr);
-
-/* Traversal function for htab_traverse.
-   Collect the entry if it matches the regexp.  */
-
-static int
-collect_matching_scripts (void **slot, void *info)
-{
-  struct loaded_script *script = *slot;
-  VEC (loaded_script_ptr) **scripts_ptr = info;
-
-  if (re_exec (script->name))
-    VEC_safe_push (loaded_script_ptr, *scripts_ptr, script);
-
-  return 1;
-}
-
-/* Print SCRIPT.  */
-
-static void
-print_script (struct loaded_script *script)
-{
-  struct ui_out *uiout = current_uiout;
-  struct cleanup *chain;
-
-  chain = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
-
-  ui_out_field_string (uiout, "loaded", script->full_path ? "Yes" : "Missing");
-  ui_out_field_string (uiout, "script", script->name);
-  ui_out_text (uiout, "\n");
-
-  /* If the name isn't the full path, print it too.  */
-  if (script->full_path != NULL
-      && strcmp (script->name, script->full_path) != 0)
-    {
-      ui_out_text (uiout, "\tfull name: ");
-      ui_out_field_string (uiout, "full_path", script->full_path);
-      ui_out_text (uiout, "\n");
-    }
-
-  do_cleanups (chain);
-}
-
-/* Helper for info_auto_load_scripts to sort the scripts by name.  */
-
-static int
-sort_scripts_by_name (const void *ap, const void *bp)
-{
-  const struct loaded_script *a = *(const struct loaded_script **) ap;
-  const struct loaded_script *b = *(const struct loaded_script **) bp;
-
-  return FILENAME_CMP (a->name, b->name);
-}
-
-/* "info auto-load-scripts" command.  */
-
-static void
-info_auto_load_scripts (char *pattern, int from_tty)
-{
-  struct ui_out *uiout = current_uiout;
-  struct auto_load_pspace_info *pspace_info;
-  struct cleanup *script_chain;
-  VEC (loaded_script_ptr) *scripts;
-  int nr_scripts;
-
-  dont_repeat ();
-
-  pspace_info = get_auto_load_pspace_data (current_program_space);
-
-  if (pattern && *pattern)
-    {
-      char *re_err = re_comp (pattern);
-
-      if (re_err)
-	error (_("Invalid regexp: %s"), re_err);
-    }
-  else
-    {
-      re_comp ("");
-    }
-
-  /* We need to know the number of rows before we build the table.
-     Plus we want to sort the scripts by name.
-     So first traverse the hash table collecting the matching scripts.  */
-
-  scripts = VEC_alloc (loaded_script_ptr, 10);
-  script_chain = make_cleanup (VEC_cleanup (loaded_script_ptr), &scripts);
-
-  if (pspace_info != NULL && pspace_info->loaded_scripts != NULL)
-    {
-      immediate_quit++;
-      /* Pass a pointer to scripts as VEC_safe_push can realloc space.  */
-      htab_traverse_noresize (pspace_info->loaded_scripts,
-			      collect_matching_scripts, &scripts);
-      immediate_quit--;
-    }
-
-  nr_scripts = VEC_length (loaded_script_ptr, scripts);
-  make_cleanup_ui_out_table_begin_end (uiout, 2, nr_scripts,
-				       "AutoLoadedScriptsTable");
-
-  ui_out_table_header (uiout, 7, ui_left, "loaded", "Loaded");
-  ui_out_table_header (uiout, 70, ui_left, "script", "Script");
-  ui_out_table_body (uiout);
-
-  if (nr_scripts > 0)
-    {
-      int i;
-      loaded_script_ptr script;
-
-      qsort (VEC_address (loaded_script_ptr, scripts),
-	     VEC_length (loaded_script_ptr, scripts),
-	     sizeof (loaded_script_ptr), sort_scripts_by_name);
-      for (i = 0; VEC_iterate (loaded_script_ptr, scripts, i, script); ++i)
-	print_script (script);
-    }
-
-  do_cleanups (script_chain);
-
-  if (nr_scripts == 0)
-    {
-      if (pattern && *pattern)
-	ui_out_message (uiout, 0, "No auto-load scripts matching %s.\n",
-			pattern);
-      else
-	ui_out_message (uiout, 0, "No auto-load scripts.\n");
-    }
-}
-
 void
 gdbpy_initialize_auto_load (void)
 {
-  auto_load_pspace_data
-    = register_program_space_data_with_cleanup (auto_load_pspace_data_cleanup);
-
-  observer_attach_new_objfile (auto_load_new_objfile);
-
   add_setshow_boolean_cmd ("auto-load-scripts", class_support,
 			   &auto_load_scripts, _("\
 Set the debugger's behaviour regarding auto-loaded scripts."), _("\
@@ -627,11 +205,6 @@ an executable or shared library."),
 			   NULL, NULL,
 			   &setlist,
 			   &showlist);
-
-  add_info ("auto-load-scripts",
-	    info_auto_load_scripts,
-	    _("Print the list of automatically loaded scripts.\n\
-Usage: info auto-load-scripts [REGEXP]"));
 }
 
 #else /* ! HAVE_PYTHON */
Index: gdb-7.4.50.20120120/gdb/python/python.h
===================================================================
--- gdb-7.4.50.20120120.orig/gdb/python/python.h	2012-04-18 00:26:14.000000000 +0200
+++ gdb-7.4.50.20120120/gdb/python/python.h	2012-04-18 00:26:29.054120199 +0200
@@ -24,8 +24,6 @@
 
 struct breakpoint_object;
 
-extern int gdbpy_global_auto_load;
-
 extern void finish_python_initialization (void);
 
 void eval_python_from_control_command (struct command_line *);