/* Exception (throw catch) mechanism, for GDB, the GNU debugger.
- Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
- 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free
- Software Foundation, Inc.
+ Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
+ 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
+ 2009, 2010 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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "exceptions.h"
#include "gdb_assert.h"
#include "gdb_string.h"
#include "serial.h"
+#include "gdbthread.h"
-const struct gdb_exception exception_none = { 0, NO_ERROR, NULL };
+const struct gdb_exception exception_none = { 0, GDB_NO_ERROR, NULL };
/* Possible catcher states. */
enum catcher_state {
/* Start with no exception, save it's address. */
exception->reason = 0;
- exception->error = NO_ERROR;
+ exception->error = GDB_NO_ERROR;
exception->message = NULL;
new_catcher->exception = exception;
catcher_pop (void)
{
struct catcher *old_catcher = current_catcher;
+
current_catcher = old_catcher->prev;
/* Restore the cleanup chain, the error/quit messages, and the uiout
case CATCH_ITER:
{
struct gdb_exception exception = *current_catcher->exception;
+
if (current_catcher->mask & RETURN_MASK (exception.reason))
{
/* Exit normally if this catcher can handle this
/* Return EXCEPTION to the nearest containing catch_errors(). */
-NORETURN void
+void
throw_exception (struct gdb_exception exception)
{
+ struct thread_info *tp = NULL;
+
quit_flag = 0;
immediate_quit = 0;
+ if (!ptid_equal (inferior_ptid, null_ptid))
+ tp = find_thread_ptid (inferior_ptid);
+
/* Perhaps it would be cleaner to do this via the cleanup chain (not sure
I can think of a reason why that is vital, though). */
- bpstat_clear_actions (stop_bpstat); /* Clear queued breakpoint commands */
+ if (tp != NULL)
+ {
+ /* Clear queued breakpoint commands */
+ bpstat_clear_actions (tp->control.stop_bpstat);
+ }
disable_current_display ();
do_cleanups (ALL_CLEANUPS);
- if (target_can_async_p () && !target_executing)
- do_exec_cleanups (ALL_CLEANUPS);
- if (sync_execution)
- do_exec_error_cleanups (ALL_CLEANUPS);
/* Jump to the containing catch_errors() call, communicating REASON
to that call via setjmp's return value. Note that REASON can't
static char *last_message;
-NORETURN void
+void
deprecated_throw_reason (enum return_reason reason)
{
struct gdb_exception exception;
+
memset (&exception, 0, sizeof exception);
exception.reason = reason;
as that way the MI's behavior is preserved. */
const char *start;
const char *end;
+
for (start = e.message; start != NULL; start = end)
{
end = strchr (start, '\n');
}
}
-void
+static void
print_any_exception (struct ui_file *file, const char *prefix,
struct gdb_exception e)
{
}
}
-NORETURN static void ATTR_NORETURN ATTR_FORMAT (printf, 3, 0)
+static void ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (3, 0)
throw_it (enum return_reason reason, enum errors error, const char *fmt,
va_list ap)
{
throw_exception (e);
}
-NORETURN void
+void
throw_verror (enum errors error, const char *fmt, va_list ap)
{
throw_it (RETURN_ERROR, error, fmt, ap);
}
-NORETURN void
+void
throw_vfatal (const char *fmt, va_list ap)
{
- throw_it (RETURN_QUIT, NO_ERROR, fmt, ap);
+ throw_it (RETURN_QUIT, GDB_NO_ERROR, fmt, ap);
}
-NORETURN void
+void
throw_error (enum errors error, const char *fmt, ...)
{
va_list args;
+
va_start (args, fmt);
throw_it (RETURN_ERROR, error, fmt, args);
va_end (args);
}
-/* Call FUNC() with args FUNC_UIOUT and FUNC_ARGS, catching any
- errors. Set FUNC_CAUGHT to an ``enum return_reason'' if the
- function is aborted (using throw_exception() or zero if the
- function returns normally. Set FUNC_VAL to the value returned by
- the function or 0 if the function was aborted.
+/* Call FUNC(UIOUT, FUNC_ARGS) but wrapped within an exception
+ handler. If an exception (enum return_reason) is thrown using
+ throw_exception() than all cleanups installed since
+ catch_exceptions() was entered are invoked, the (-ve) exception
+ value is then returned by catch_exceptions. If FUNC() returns
+ normally (with a positive or zero return value) then that value is
+ returned by catch_exceptions(). It is an internal_error() for
+ FUNC() to return a negative value.
+
+ See exceptions.h for further usage details.
Must not be called with immediate_quit in effect (bad things might
happen, say we got a signal in the middle of a memcpy to quit_return).
This is an OK restriction; with very few exceptions immediate_quit can
- be replaced by judicious use of QUIT.
-
- MASK specifies what to catch; it is normally set to
- RETURN_MASK_ALL, if for no other reason than that the code which
- calls catch_errors might not be set up to deal with a quit which
- isn't caught. But if the code can deal with it, it generally
- should be RETURN_MASK_ERROR, unless for some reason it is more
- useful to abort only the portion of the operation inside the
- catch_errors. Note that quit should return to the command line
- fairly quickly, even if some further processing is being done. */
+ be replaced by judicious use of QUIT. */
/* MAYBE: cagney/1999-11-05: catch_errors() in conjunction with
error() et.al. could maintain a set of flags that indicate the the
code also randomly used a SET_TOP_LEVEL macro that directly
initialize the longjmp buffers. */
-/* MAYBE: cagney/1999-11-05: Should the catch_errors and cleanups code
- be consolidated into a single file instead of being distributed
- between utils.c and top.c? */
-
int
catch_exceptions (struct ui_out *uiout,
catch_exceptions_ftype *func,
return_mask mask)
{
volatile struct gdb_exception exception;
+
TRY_CATCH (exception, mask)
{
(*func) (uiout, func_args);
{
volatile struct gdb_exception exception;
volatile int val = 0;
+
TRY_CATCH (exception, mask)
{
val = (*func) (uiout, func_args);
return val;
}
+/* This function is superseded by catch_exceptions(). */
+
int
catch_errors (catch_errors_ftype *func, void *func_args, char *errstring,
return_mask mask)
{
volatile int val = 0;
volatile struct gdb_exception exception;
+
TRY_CATCH (exception, mask)
{
val = func (func_args);
char *arg, int from_tty, return_mask mask)
{
volatile struct gdb_exception e;
+
TRY_CATCH (e, mask)
{
command (arg, from_tty);
projects / deliverable / binutils-gdb.git / blobdiff