static void do_nothing PARAMS ((int));
+static void show_debug PARAMS ((char *, int));
+
+static void set_debug PARAMS ((char *, int));
+
#ifdef SIGHUP
/* NOTE 1999-04-29: This function will be static again, once we modify
gdb to use the event loop as the default command loop and we merge
struct cmd_list_element *showprintlist;
+struct cmd_list_element *setdebuglist;
+
+struct cmd_list_element *showdebuglist;
+
struct cmd_list_element *setchecklist;
struct cmd_list_element *showchecklist;
/* Called after a `set' command has finished. Is only run if the
`set' command succeeded. */
-void (*set_hook) PARAMS ((struct cmd_list_element *c));
+void (*set_hook) (struct cmd_list_element * c);
/* Called when the current thread changes. Argument is thread id. */
/* Takes control from error (). Typically used to prevent longjmps out of the
middle of the GUI. Usually used in conjunction with a catch routine. */
-NORETURN void (*error_hook)
-PARAMS ((void)) ATTR_NORETURN;
+NORETURN void (*error_hook) (void) ATTR_NORETURN;
\f
-/* Generally one should use catch_errors rather than manipulating these
- directly. The exception is main(). */
+/* One should use catch_errors rather than manipulating these
+ directly. */
#if defined(HAVE_SIGSETJMP)
#define SIGJMP_BUF sigjmp_buf
#define SIGSETJMP(buf) sigsetjmp(buf, 1)
#define SIGLONGJMP(buf,val) longjmp(buf,val)
#endif
-/* Where to go for return_to_top_level (RETURN_ERROR). */
-static SIGJMP_BUF error_return;
-/* Where to go for return_to_top_level (RETURN_QUIT). */
-static SIGJMP_BUF quit_return;
+/* Where to go for return_to_top_level. */
+static SIGJMP_BUF *catch_return;
-/* Return for reason REASON. This generally gets back to the command
- loop, but can be caught via catch_errors. */
+/* Return for reason REASON to the nearest containing catch_errors(). */
NORETURN void
return_to_top_level (reason)
break;
}
- (NORETURN void) SIGLONGJMP
- (reason == RETURN_ERROR ? error_return : quit_return, 1);
+ /* Jump to the containing catch_errors() call, communicating REASON
+ to that call via setjmp's return value. Note that REASON can't
+ be zero, by definition in defs.h. */
+
+ (NORETURN void) SIGLONGJMP (*catch_return, (int) reason);
}
/* Call FUNC with arg ARGS, catching any errors. If there is no
code also randomly used a SET_TOP_LEVEL macro that directly
initialize the longjmp buffers. */
-/* MAYBE: cagney/1999-11-05: Since the SET_TOP_LEVEL macro has been
- eliminated it is now possible to use the stack to directly store
- each longjmp buffer. The global code would just need to update a
- pointer (onto the stack - ulgh!?) indicating the current longjmp
- buffers. It would certainly improve the performance of the longjmp
- code since the memcpy's would be eliminated. */
-
/* MAYBE: cagney/1999-11-05: Should the catch_erros and cleanups code
be consolidated into a single file instead of being distributed
between utils.c and top.c? */
char *errstring;
return_mask mask;
{
- SIGJMP_BUF saved_error;
- SIGJMP_BUF saved_quit;
- SIGJMP_BUF tmp_jmp;
+ SIGJMP_BUF *saved_catch;
+ SIGJMP_BUF catch;
int val;
struct cleanup *saved_cleanup_chain;
char *saved_error_pre_print;
char *saved_quit_pre_print;
- saved_cleanup_chain = save_cleanups ();
+ /* Return value from SIGSETJMP(): enum return_reason if error or
+ quit caught, 0 otherwise. */
+ int caught;
+
+ /* Override error/quit messages during FUNC. */
+
saved_error_pre_print = error_pre_print;
saved_quit_pre_print = quit_pre_print;
if (mask & RETURN_MASK_ERROR)
- {
- memcpy ((char *) saved_error, (char *) error_return, sizeof (SIGJMP_BUF));
- error_pre_print = errstring;
- }
+ error_pre_print = errstring;
if (mask & RETURN_MASK_QUIT)
- {
- memcpy (saved_quit, quit_return, sizeof (SIGJMP_BUF));
- quit_pre_print = errstring;
- }
+ quit_pre_print = errstring;
- if (SIGSETJMP (tmp_jmp) == 0)
- {
- if (mask & RETURN_MASK_ERROR)
- memcpy (error_return, tmp_jmp, sizeof (SIGJMP_BUF));
- if (mask & RETURN_MASK_QUIT)
- memcpy (quit_return, tmp_jmp, sizeof (SIGJMP_BUF));
- val = (*func) (args);
- /* FIXME: cagney/1999-11-05: A correct FUNC implementaton will
- clean things up (restoring the cleanup chain) to the state
- they were just prior to the call. Technically, this means
- that the below restore_cleanups call is redundant.
- Unfortunatly, many FUNC's are not that well behaved.
- restore_cleanups should either be replaced with a do_cleanups
- call (to cover the problem) or an assertion check to detect
- bad FUNCs code. */
- }
- else
- val = 0;
+ /* Prevent error/quit during FUNC from calling cleanups established
+ prior to here. */
+
+ saved_cleanup_chain = save_cleanups ();
+
+ /* Call FUNC, catching error/quit events. */
+
+ saved_catch = catch_return;
+ catch_return = &catch;
+ caught = SIGSETJMP (catch);
+ if (!caught)
+ val = (*func) (args);
+ catch_return = saved_catch;
+
+ /* FIXME: cagney/1999-11-05: A correct FUNC implementaton will
+ clean things up (restoring the cleanup chain) to the state they
+ were just prior to the call. Unfortunatly, many FUNC's are not
+ that well behaved. This could be fixed by adding either a
+ do_cleanups call (to cover the problem) or an assertion check to
+ detect bad FUNCs code. */
+
+ /* Restore the cleanup chain and error/quit messages to their
+ original states. */
restore_cleanups (saved_cleanup_chain);
- if (mask & RETURN_MASK_ERROR)
- {
- memcpy (error_return, saved_error, sizeof (SIGJMP_BUF));
- error_pre_print = saved_error_pre_print;
- }
if (mask & RETURN_MASK_QUIT)
- {
- memcpy (quit_return, saved_quit, sizeof (SIGJMP_BUF));
- quit_pre_print = saved_quit_pre_print;
- }
- return val;
+ quit_pre_print = saved_quit_pre_print;
+ if (mask & RETURN_MASK_ERROR)
+ error_pre_print = saved_error_pre_print;
+
+ /* Return normally if no error/quit event occurred. */
+
+ if (!caught)
+ return val;
+
+ /* If the caller didn't request that the event be caught, relay the
+ event to the next containing catch_errors(). */
+
+ if (!(mask & RETURN_MASK (caught)))
+ return_to_top_level (caught);
+
+ /* Tell the caller that an event was caught.
+
+ FIXME: nsd/2000-02-22: When MASK is RETURN_MASK_ALL, the caller
+ can't tell what type of event occurred.
+
+ A possible fix is to add a new interface, catch_event(), that
+ returns enum return_reason after catching an error or a quit.
+
+ When returning normally, i.e. without catching an error or a
+ quit, catch_event() could return RETURN_NORMAL, which would be
+ added to enum return_reason. FUNC would return information
+ exclusively via ARGS.
+
+ Alternatively, normal catch_event() could return FUNC's return
+ value. The caller would need to be aware of potential overlap
+ with enum return_reason, which could be publicly restricted to
+ negative values to simplify return value processing in FUNC and
+ in the caller. */
+
+ return 0;
}
struct captured_command_args
}
int
-catch_command_errors (catch_command_errors_ftype *command,
+catch_command_errors (catch_command_errors_ftype * command,
char *arg, int from_tty, return_mask mask)
{
struct captured_command_args args;
register struct cmd_list_element *c;
register enum language flang;
static int warned = 0;
+ char *line;
/* FIXME: These should really be in an appropriate header file */
extern void serial_log_command PARAMS ((const char *));
if (*p)
{
char *arg;
+ line = p;
c = lookup_cmd (&p, cmdlist, "", 0, 1);
if (c->hook)
execute_user_command (c->hook, (char *) 0);
+ if (c->flags & DEPRECATED_WARN_USER)
+ deprecated_cmd_warning (&line);
+
if (c->class == class_user)
execute_user_command (c, arg);
else if (c->type == set_cmd || c->type == show_cmd)
char *gdb_completer_command_word_break_characters =
" \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,";
+/* When completing on file names, we remove from the list of word
+ break characters any characters that are commonly used in file
+ names, such as '-', '+', '~', etc. Otherwise, readline displays
+ incorrect completion candidates. */
+char *gdb_completer_file_name_break_characters = " \t\n*|\"';:?/><";
+
/* Characters that can be used to quote completion strings. Note that we
can't include '"' because the gdb C parser treats such quoted sequences
as strings. */
return_val[return_val_used++] = p;
break;
}
+ /* We need to set subsequent_name to a non-zero value before the
+ continue line below, because otherwise, if the first file seen
+ by GDB is a backup file whose name ends in a `~', we will loop
+ indefinitely. */
+ subsequent_name = 1;
/* Like emacs, don't complete on old versions. Especially useful
in the "source" command. */
if (p[strlen (p) - 1] == '~')
free (p);
}
}
- subsequent_name = 1;
}
#if 0
/* There is no way to do this just long enough to affect quote inserting
/* It is a normal command; what comes after it is
completed by the command's completer function. */
list = (*c->completer) (p, word);
+ if (c->completer == filename_completer)
+ rl_completer_word_break_characters =
+ gdb_completer_file_name_break_characters;
}
}
else
{
/* It is a normal command. */
list = (*c->completer) (p, word);
+ if (c->completer == filename_completer)
+ rl_completer_word_break_characters =
+ gdb_completer_file_name_break_characters;
}
}
}
\f
/* Add an element to the list of info subcommands. */
-void
+struct cmd_list_element *
add_info (name, fun, doc)
char *name;
void (*fun) PARAMS ((char *, int));
char *doc;
{
- add_cmd (name, no_class, fun, doc, &infolist);
+ return add_cmd (name, no_class, fun, doc, &infolist);
}
/* Add an alias to the list of info subcommands. */
-void
+struct cmd_list_element *
add_info_alias (name, oldname, abbrev_flag)
char *name;
char *oldname;
int abbrev_flag;
{
- add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist);
+ return add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist);
}
/* The "info" command is defined as a prefix, with allow_unknown = 0.
\f
/* Add an element to the list of commands. */
-void
+struct cmd_list_element *
add_com (name, class, fun, doc)
char *name;
enum command_class class;
void (*fun) PARAMS ((char *, int));
char *doc;
{
- add_cmd (name, class, fun, doc, &cmdlist);
+ return add_cmd (name, class, fun, doc, &cmdlist);
}
/* Add an alias or abbreviation command to the list of commands. */
-void
+struct cmd_list_element *
add_com_alias (name, oldname, class, abbrev_flag)
char *name;
char *oldname;
enum command_class class;
int abbrev_flag;
{
- add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist);
+ return add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist);
}
void
/* Second line is a copyright notice. */
- fprintf_filtered (stream, "Copyright 1998 Free Software Foundation, Inc.\n");
+ fprintf_filtered (stream, "Copyright 2000 Free Software Foundation, Inc.\n");
/* Following the copyright is a brief statement that the program is
free software, that users are free to copy and change it on
#endif
len = strlen (dir);
- if (SLASH_P (dir[len-1]))
+ if (SLASH_P (dir[len - 1]))
{
/* Remove the trailing slash unless this is a root directory
- (including a drive letter on non-Unix systems). */
- if (!(len == 1) /* "/" */
+ (including a drive letter on non-Unix systems). */
+ if (!(len == 1) /* "/" */
#if defined(_WIN32) || defined(__MSDOS__)
- && !(!SLASH_P (*dir) && ROOTED_P (dir) && len <= 3) /* "d:/" */
+ && !(!SLASH_P (*dir) && ROOTED_P (dir) && len <= 3) /* "d:/" */
#endif
)
len--;
signal (SIGFPE, float_handler);
error ("Erroneous arithmetic operation.");
}
-\f
+
+static void
+set_debug (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ printf_unfiltered ("\"set debug\" must be followed by the name of a print subcommand.\n");
+ help_list (setdebuglist, "set debug ", -1, gdb_stdout);
+}
+
+static void
+show_debug (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ cmd_show_list (showdebuglist, from_tty, "");
+}
static void
init_cmd_lists ()
directories the file written will be the same as the one
that was read. */
#ifdef __MSDOS__
- /* No leading dots in file names are allowed on MSDOS. */
- history_filename = concat (current_directory, "/_gdb_history", NULL);
+ /* No leading dots in file names are allowed on MSDOS. */
+ history_filename = concat (current_directory, "/_gdb_history", NULL);
#else
history_filename = concat (current_directory, "/.gdb_history", NULL);
#endif
using remote targets.", &setlist),
&showlist);
- add_show_from_set (
- add_set_cmd ("remotedebug", no_class, var_zinteger, (char *) &remote_debug,
- "Set debugging of remote protocol.\n\
+ c = add_set_cmd ("remotedebug", no_class, var_zinteger,
+ (char *) &remote_debug,
+ "Set debugging of remote protocol.\n\
When enabled, each packet sent or received with the remote target\n\
-is displayed.", &setlist),
- &showlist);
+is displayed.", &setlist);
+ deprecate_cmd (c, "set debug remote");
+ deprecate_cmd (add_show_from_set (c, &showlist), "show debug remote");
+
+ add_show_from_set (add_set_cmd ("remote", no_class, var_zinteger,
+ (char *) &remote_debug,
+ "Set debugging of remote protocol.\n\
+When enabled, each packet sent or received with the remote target\n\
+is displayed.", &setdebuglist),
+ &showdebuglist);
add_show_from_set (
add_set_cmd ("remotetimeout", no_class, var_integer, (char *) &remote_timeout,
Use \"on\" to enable the notification, and \"off\" to disable it.", &setlist),
&showlist);
}
+ add_prefix_cmd ("debug", no_class, set_debug,
+ "Generic command for setting gdb debugging flags",
+ &setdebuglist, "set debug ", 0, &setlist);
+
+ add_prefix_cmd ("debug", no_class, show_debug,
+ "Generic command for showing gdb debugging flags",
+ &showdebuglist, "show debug ", 0, &showlist);
}
projects / deliverable / binutils-gdb.git / blobdiff