gdb/python/py-auto-load.c

   1 /* GDB routines for supporting auto-loaded scripts.
   2
   3    Copyright (C) 2010-2014 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include "defs.h"
  21 #include <string.h>
  22 #include "top.h"
  23 #include "exceptions.h"
  24 #include "gdbcmd.h"
  25 #include "objfiles.h"
  26 #include "python.h"
  27 #include "auto-load.h"
  28
  29 #ifdef HAVE_PYTHON
  30
  31 #include "python-internal.h"
  32
  33 /* User-settable option to enable/disable auto-loading of Python scripts:
  34    set auto-load python-scripts on|off
  35    This is true if we should auto-load associated Python scripts when an
  36    objfile is opened, false otherwise.  */
  37 static int auto_load_python_scripts = 1;
  38
  39 /* "show" command for the auto_load_python_scripts configuration variable.  */
  40
  41 static void
  42 show_auto_load_python_scripts (struct ui_file *file, int from_tty,
  43                                struct cmd_list_element *c, const char *value)
  44 {
  45   fprintf_filtered (file, _("Auto-loading of Python scripts is %s.\n"), value);
  46 }
  47
  48 /* Return non-zero if auto-loading Python scripts is enabled.  */
  49
  50 static int
  51 auto_load_python_scripts_enabled (void)
  52 {
  53   return auto_load_python_scripts;
  54 }
  55
  56 /* Definition of script language for Python scripts.  */
  57
  58 static const struct script_language script_language_python =
  59 {
  60   "python",
  61   GDBPY_AUTO_FILE_NAME,
  62   auto_load_python_scripts_enabled,
  63   source_python_script_for_objfile
  64 };
  65
  66 /* Return the Python script language definition.  */
  67
  68 const struct script_language *
  69 gdbpy_script_language_defn (void)
  70 {
  71   return &script_language_python;
  72 }
  73
  74 /* Wrapper for "info auto-load python-scripts".  */
  75
  76 static void
  77 info_auto_load_python_scripts (char *pattern, int from_tty)
  78 {
  79   auto_load_info_scripts (pattern, from_tty, &script_language_python);
  80 }
  81 \f
  82 int
  83 gdbpy_initialize_auto_load (void)
  84 {
  85   struct cmd_list_element *cmd;
  86   const char *cmd_name;
  87
  88   add_setshow_boolean_cmd ("python-scripts", class_support,
  89                            &auto_load_python_scripts, _("\
  90 Set the debugger's behaviour regarding auto-loaded Python scripts."), _("\
  91 Show the debugger's behaviour regarding auto-loaded Python scripts."), _("\
  92 If enabled, auto-loaded Python scripts are loaded when the debugger reads\n\
  93 an executable or shared library.\n\
  94 This options has security implications for untrusted inferiors."),
  95                            NULL, show_auto_load_python_scripts,
  96                            auto_load_set_cmdlist_get (),
  97                            auto_load_show_cmdlist_get ());
  98
  99   add_setshow_boolean_cmd ("auto-load-scripts", class_support,
 100                            &auto_load_python_scripts, _("\
 101 Set the debugger's behaviour regarding auto-loaded Python scripts, "
 102                                                                  "deprecated."),
 103                            _("\
 104 Show the debugger's behaviour regarding auto-loaded Python scripts, "
 105                                                                  "deprecated."),
 106                            NULL, NULL, show_auto_load_python_scripts,
 107                            &setlist, &showlist);
 108   cmd_name = "auto-load-scripts";
 109   cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1);
 110   deprecate_cmd (cmd, "set auto-load python-scripts");
 111
 112   /* It is needed because lookup_cmd updates the CMD_NAME pointer.  */
 113   cmd_name = "auto-load-scripts";
 114   cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1);
 115   deprecate_cmd (cmd, "show auto-load python-scripts");
 116
 117   add_cmd ("python-scripts", class_info, info_auto_load_python_scripts,
 118            _("Print the list of automatically loaded Python scripts.\n\
 119 Usage: info auto-load python-scripts [REGEXP]"),
 120            auto_load_info_cmdlist_get ());
 121
 122   cmd = add_info ("auto-load-scripts", info_auto_load_python_scripts, _("\
 123 Print the list of automatically loaded Python scripts, deprecated."));
 124   deprecate_cmd (cmd, "info auto-load python-scripts");
 125
 126   return 0;
 127 }
 128
 129 #else /* ! HAVE_PYTHON */
 130
 131 /* Return the Python script language definition.
 132    Since support isn't compiled in, return NULL.  */
 133
 134 const struct script_language *
 135 gdbpy_script_language_defn (void)
 136 {
 137   return NULL;
 138 }
 139
 140 #endif /* ! HAVE_PYTHON */