/* General GDB/Guile code.
- Copyright (C) 2014 Free Software Foundation, Inc.
+ Copyright (C) 2014-2018 Free Software Foundation, Inc.
This file is part of GDB.
#include "cli/cli-utils.h"
#include "command.h"
#include "gdbcmd.h"
-#include "interps.h"
+#include "top.h"
#include "extension-priv.h"
#include "utils.h"
#include "version.h"
#ifdef HAVE_GUILE
#include "guile.h"
#include "guile-internal.h"
-#ifdef HAVE_GC_GC_H
-#include <gc/gc.h> /* PR 17185 */
-#endif
#endif
+#include <signal.h>
/* The Guile version we're using.
We *could* use the macros in libguile/version.h but that would preclude
#ifdef HAVE_GUILE
/* Forward decls, these are defined later. */
-static const struct extension_language_script_ops guile_extension_script_ops;
-static const struct extension_language_ops guile_extension_ops;
+extern const struct extension_language_script_ops guile_extension_script_ops;
+extern const struct extension_language_ops guile_extension_ops;
#endif
/* The main struct describing GDB's interface to the Guile
extension language. */
-const struct extension_language_defn extension_language_guile =
+extern const struct extension_language_defn extension_language_guile =
{
EXT_LANG_GUILE,
"guile",
/* The interface between gdb proper and loading of python scripts. */
-static const struct extension_language_script_ops guile_extension_script_ops =
+const struct extension_language_script_ops guile_extension_script_ops =
{
gdbscm_source_script,
gdbscm_source_objfile_script,
+ gdbscm_execute_objfile_script,
gdbscm_auto_load_enabled
};
/* The interface between gdb proper and guile scripting. */
-static const struct extension_language_ops guile_extension_ops =
+const struct extension_language_ops guile_extension_ops =
{
gdbscm_finish_initialization,
gdbscm_initialized,
gdbscm_breakpoint_cond_says_stop,
NULL, /* gdbscm_check_quit_flag, */
- NULL, /* gdbscm_clear_quit_flag, */
NULL, /* gdbscm_set_quit_flag, */
};
/* Implementation of the gdb "guile-repl" command. */
static void
-guile_repl_command (char *arg, int from_tty)
+guile_repl_command (const char *arg, int from_tty)
{
- struct cleanup *cleanup;
-
- cleanup = make_cleanup_restore_integer (&interpreter_async);
- interpreter_async = 0;
+ scoped_restore restore_async = make_scoped_restore (¤t_ui->async, 0);
arg = skip_spaces (arg);
dont_repeat ();
gdbscm_enter_repl ();
}
-
- do_cleanups (cleanup);
}
/* Implementation of the gdb "guile" command.
TODO: Add the result to Guile's history? */
static void
-guile_command (char *arg, int from_tty)
+guile_command (const char *arg, int from_tty)
{
- struct cleanup *cleanup;
-
- cleanup = make_cleanup_restore_integer (&interpreter_async);
- interpreter_async = 0;
+ scoped_restore restore_async = make_scoped_restore (¤t_ui->async, 0);
arg = skip_spaces (arg);
if (msg != NULL)
{
+ /* It is ok that this is a "dangling cleanup" because we
+ throw immediately. */
make_cleanup (xfree, msg);
error ("%s", msg);
}
}
else
{
- struct command_line *l = get_command_line (guile_control, "");
+ command_line_up l = get_command_line (guile_control, "");
- make_cleanup_free_command_lines (&l);
- execute_control_command_untraced (l);
+ execute_control_command_untraced (l.get ());
}
-
- do_cleanups (cleanup);
}
/* Given a command_line, return a command string suitable for passing
for (iter = l; iter; iter = iter->next)
size += strlen (iter->line) + 1;
- script = xmalloc (size + 1);
+ script = (char *) xmalloc (size + 1);
here = 0;
for (iter = l; iter; iter = iter->next)
{
{
int from_tty_arg_pos = -1, to_string_arg_pos = -1;
int from_tty = 0, to_string = 0;
- volatile struct gdb_exception except;
const SCM keywords[] = { from_tty_keyword, to_string_keyword, SCM_BOOL_F };
char *command;
- char *result = NULL;
struct cleanup *cleanups;
+ struct gdb_exception except = exception_none;
gdbscm_parse_function_args (FUNC_NAME, SCM_ARG1, keywords, "s#tt",
command_scm, &command, rest,
executed. */
cleanups = make_cleanup (xfree, command);
- TRY_CATCH (except, RETURN_MASK_ALL)
- {
- struct cleanup *inner_cleanups;
+ std::string to_string_res;
- inner_cleanups = make_cleanup_restore_integer (&interpreter_async);
- interpreter_async = 0;
+ TRY
+ {
+ scoped_restore restore_async = make_scoped_restore (¤t_ui->async,
+ 0);
- prevent_dont_repeat ();
+ scoped_restore preventer = prevent_dont_repeat ();
if (to_string)
- result = execute_command_to_string (command, from_tty);
+ to_string_res = execute_command_to_string (command, from_tty);
else
- {
- execute_command (command, from_tty);
- result = NULL;
- }
+ execute_command (command, from_tty);
/* Do any commands attached to breakpoint we stopped at. */
bpstat_do_actions ();
-
- do_cleanups (inner_cleanups);
}
+ CATCH (ex, RETURN_MASK_ALL)
+ {
+ except = ex;
+ }
+ END_CATCH
+
do_cleanups (cleanups);
GDBSCM_HANDLE_GDB_EXCEPTION (except);
- if (result)
- {
- SCM r = gdbscm_scm_from_c_string (result);
- xfree (result);
- return r;
- }
+ if (to_string)
+ return gdbscm_scm_from_c_string (to_string_res.c_str ());
return SCM_UNSPECIFIED;
}
commands. */
static void
-guile_repl_command (char *arg, int from_tty)
+guile_repl_command (const char *arg, int from_tty)
{
arg = skip_spaces (arg);
if (arg && *arg)
}
static void
-guile_command (char *arg, int from_tty)
+guile_command (const char *arg, int from_tty)
{
arg = skip_spaces (arg);
if (arg && *arg)
{
/* Even if Guile isn't enabled, we still have to slurp the
command list to the corresponding "end". */
- struct command_line *l = get_command_line (guile_control, "");
- struct cleanup *cleanups = make_cleanup_free_command_lines (&l);
+ command_line_up l = get_command_line (guile_control, "");
- execute_control_command_untraced (l);
- do_cleanups (cleanups);
+ execute_control_command_untraced (l.get ());
}
}
/* Function for use by 'set guile' prefix command. */
static void
-set_guile_command (char *args, int from_tty)
+set_guile_command (const char *args, int from_tty)
{
help_list (set_guile_list, "set guile ", all_commands, gdb_stdout);
}
/* Function for use by 'show guile' prefix command. */
static void
-show_guile_command (char *args, int from_tty)
+show_guile_command (const char *args, int from_tty)
{
cmd_show_list (show_guile_list, from_tty, "");
}
"info scheme" with no args. */
static void
-info_guile_command (char *args, int from_tty)
+info_guile_command (const char *args, int from_tty)
{
printf_unfiltered (_("\"info guile\" must be followed"
" by the name of an info command.\n"));
static const scheme_function misc_guile_functions[] =
{
- { "execute", 1, 0, 1, gdbscm_execute_gdb_command,
+ { "execute", 1, 0, 1, as_a_scm_t_subr (gdbscm_execute_gdb_command),
"\
Execute the given GDB command.\n\
\n\
Returns: The result of the command if #:to-string is true.\n\
Otherwise returns unspecified." },
- { "data-directory", 0, 0, 0, gdbscm_data_directory,
+ { "data-directory", 0, 0, 0, as_a_scm_t_subr (gdbscm_data_directory),
"\
Return the name of GDB's data directory." },
- { "guile-data-directory", 0, 0, 0, gdbscm_guile_data_directory,
+ { "guile-data-directory", 0, 0, 0,
+ as_a_scm_t_subr (gdbscm_guile_data_directory),
"\
Return the name of the Guile directory within GDB's data directory." },
- { "gdb-version", 0, 0, 0, gdbscm_gdb_version,
+ { "gdb-version", 0, 0, 0, as_a_scm_t_subr (gdbscm_gdb_version),
"\
Return GDB's version string." },
- { "host-config", 0, 0, 0, gdbscm_host_config,
+ { "host-config", 0, 0, 0, as_a_scm_t_subr (gdbscm_host_config),
"\
Return the name of the host configuration." },
- { "target-config", 0, 0, 0, gdbscm_target_config,
+ { "target-config", 0, 0, 0, as_a_scm_t_subr (gdbscm_target_config),
"\
Return the name of the target configuration." },
initialize_scheme_side (void)
{
char *boot_scm_path;
- char *msg;
- guile_datadir = concat (gdb_datadir, SLASH_STRING, "guile", NULL);
+ guile_datadir = concat (gdb_datadir, SLASH_STRING, "guile", (char *) NULL);
boot_scm_path = concat (guile_datadir, SLASH_STRING, "gdb",
- SLASH_STRING, boot_scm_filename, NULL);
+ SLASH_STRING, boot_scm_filename, (char *) NULL);
scm_c_catch (SCM_BOOL_T, boot_guile_support, boot_scm_path,
handle_boot_error, boot_scm_path, NULL, NULL);
performed within the desired module. */
scm_c_define_module (gdbscm_module_name, initialize_gdb_module, NULL);
+#if HAVE_GUILE_MANUAL_FINALIZATION
+ scm_run_finalizers ();
+#endif
+
return NULL;
}
&set_guile_list, &show_guile_list);
}
-/* Provide a prototype to silence -Wmissing-prototypes. */
-extern initialize_file_ftype _initialize_guile;
-
void
_initialize_guile (void)
{
- char *msg;
-
install_gdb_commands ();
#if HAVE_GUILE
- /* The Python support puts the C side in module "_gdb", leaving the Python
- side to define module "gdb" which imports "_gdb". There is evidently no
- similar convention in Guile so we skip this. */
-
- /* PR 17185 There are problems with using libgc 7.4.0.
- Copy over the workaround Guile uses (Guile is working around a different
- problem, but the workaround is the same). */
-#if (GC_VERSION_MAJOR == 7 && GC_VERSION_MINOR == 4 && GC_VERSION_MICRO == 0)
- /* The bug is only known to appear with pthreads. We assume any system
- using pthreads also uses setenv (and not putenv). That is why we don't
- have a similar call to putenv here. */
-#if defined (HAVE_SETENV)
- setenv ("GC_MARKERS", "1", 1);
+ {
+#ifdef HAVE_SIGPROCMASK
+ sigset_t sigchld_mask, prev_mask;
#endif
+
+ /* The Python support puts the C side in module "_gdb", leaving the Python
+ side to define module "gdb" which imports "_gdb". There is evidently no
+ similar convention in Guile so we skip this. */
+
+#if HAVE_GUILE_MANUAL_FINALIZATION
+ /* Our SMOB free functions are not thread-safe, as GDB itself is not
+ intended to be thread-safe. Disable automatic finalization so that
+ finalizers aren't run in other threads. */
+ scm_set_automatic_finalization_enabled (0);
+#endif
+
+#ifdef HAVE_SIGPROCMASK
+ /* Before we initialize Guile, block SIGCHLD.
+ This is done so that all threads created during Guile initialization
+ have SIGCHLD blocked. PR 17247.
+ Really libgc and Guile should do this, but we need to work with
+ libgc 7.4.x. */
+ sigemptyset (&sigchld_mask);
+ sigaddset (&sigchld_mask, SIGCHLD);
+ sigprocmask (SIG_BLOCK, &sigchld_mask, &prev_mask);
+#endif
+
+ /* scm_with_guile is the most portable way to initialize Guile.
+ Plus we need to initialize the Guile support while in Guile mode
+ (e.g., called from within a call to scm_with_guile). */
+ scm_with_guile (call_initialize_gdb_module, NULL);
+
+#ifdef HAVE_SIGPROCMASK
+ sigprocmask (SIG_SETMASK, &prev_mask, NULL);
#endif
- /* scm_with_guile is the most portable way to initialize Guile.
- Plus we need to initialize the Guile support while in Guile mode
- (e.g., called from within a call to scm_with_guile). */
- scm_with_guile (call_initialize_gdb_module, NULL);
-
- /* Set Guile's backtrace to match the "set guile print-stack" default.
- [N.B. The two settings are still separate.]
- But only do this after we've initialized Guile, it's nice to see a
- backtrace if there's an error during initialization.
- OTOH, if the error is that gdb/init.scm wasn't found because gdb is being
- run from the build tree, the backtrace is more noise than signal.
- Sigh. */
- gdbscm_set_backtrace (0);
+ /* Set Guile's backtrace to match the "set guile print-stack" default.
+ [N.B. The two settings are still separate.]
+ But only do this after we've initialized Guile, it's nice to see a
+ backtrace if there's an error during initialization.
+ OTOH, if the error is that gdb/init.scm wasn't found because gdb is
+ being run from the build tree, the backtrace is more noise than signal.
+ Sigh. */
+ gdbscm_set_backtrace (0);
+ }
#endif
}
projects / thirdparty / binutils-gdb.git / blobdiff