/* Exception (throw catch) mechanism, for GDB, the GNU debugger.
- Copyright 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
+ Free Software Foundation, Inc.
This file is part of GDB.
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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#include "defs.h"
#include "exceptions.h"
-#include <setjmp.h>
#include "breakpoint.h"
#include "target.h"
#include "inferior.h"
#include "ui-out.h"
#include "gdb_assert.h"
#include "gdb_string.h"
+#include "serial.h"
-const struct exception exception_none = { 0, NO_ERROR, NULL };
-
-/* 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) siglongjmp((buf), (val))
-#else
-#define SIGJMP_BUF jmp_buf
-#define SIGSETJMP(buf) setjmp(buf)
-#define SIGLONGJMP(buf,val) longjmp((buf), (val))
-#endif
+const struct gdb_exception exception_none = { 0, GDB_NO_ERROR, NULL };
/* Possible catcher states. */
enum catcher_state {
{
enum catcher_state state;
/* Jump buffer pointing back at the exception handler. */
- SIGJMP_BUF buf;
+ EXCEPTIONS_SIGJMP_BUF buf;
/* Status buffer belonging to the exception handler. */
- volatile struct exception *exception;
+ volatile struct gdb_exception *exception;
/* Saved/current state. */
int mask;
struct ui_out *saved_uiout;
/* Where to go for throw_exception(). */
static struct catcher *current_catcher;
-static SIGJMP_BUF *
-catcher_init (struct ui_out *func_uiout,
- volatile struct exception *exception,
- return_mask mask)
+EXCEPTIONS_SIGJMP_BUF *
+exceptions_state_mc_init (struct ui_out *func_uiout,
+ volatile struct gdb_exception *exception,
+ return_mask mask)
{
struct catcher *new_catcher = XZALLOC (struct catcher);
/* 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 state machine. Returns non-zero if the m/c should be run
again, zero if it should abort. */
-int
-catcher_state_machine (enum catcher_action action)
+static int
+exceptions_state_mc (enum catcher_action action)
{
switch (current_catcher->state)
{
current_catcher->state = CATCHER_RUNNING;
return 1;
default:
- internal_error (__FILE__, __LINE__, "bad state");
+ internal_error (__FILE__, __LINE__, _("bad state"));
}
case CATCHER_RUNNING:
switch (action)
/* See also throw_exception. */
return 1;
default:
- internal_error (__FILE__, __LINE__, "bad switch");
+ internal_error (__FILE__, __LINE__, _("bad switch"));
}
case CATCHER_RUNNING_1:
switch (action)
/* See also throw_exception. */
return 1;
default:
- internal_error (__FILE__, __LINE__, "bad switch");
+ internal_error (__FILE__, __LINE__, _("bad switch"));
}
case CATCHER_ABORTING:
switch (action)
{
case CATCH_ITER:
{
- struct exception exception = *current_catcher->exception;
+ struct gdb_exception exception = *current_catcher->exception;
if (current_catcher->mask & RETURN_MASK (exception.reason))
{
/* Exit normally if this catcher can handle this
throw_exception (exception);
}
default:
- internal_error (__FILE__, __LINE__, "bad state");
+ internal_error (__FILE__, __LINE__, _("bad state"));
}
default:
- internal_error (__FILE__, __LINE__, "bad switch");
+ internal_error (__FILE__, __LINE__, _("bad switch"));
}
}
+int
+exceptions_state_mc_action_iter (void)
+{
+ return exceptions_state_mc (CATCH_ITER);
+}
+
+int
+exceptions_state_mc_action_iter_1 (void)
+{
+ return exceptions_state_mc (CATCH_ITER_1);
+}
+
/* Return EXCEPTION to the nearest containing catch_errors(). */
NORETURN void
-throw_exception (struct exception exception)
+throw_exception (struct gdb_exception exception)
{
quit_flag = 0;
immediate_quit = 0;
/* 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. */
- catcher_state_machine (CATCH_THROWING);
+ exceptions_state_mc (CATCH_THROWING);
*current_catcher->exception = exception;
- SIGLONGJMP (current_catcher->buf, exception.reason);
+ EXCEPTIONS_SIGLONGJMP (current_catcher->buf, exception.reason);
}
static char *last_message;
NORETURN void
deprecated_throw_reason (enum return_reason reason)
{
- struct exception exception;
+ struct gdb_exception exception;
memset (&exception, 0, sizeof exception);
exception.reason = reason;
exception.error = GENERIC_ERROR;
break;
default:
- internal_error (__FILE__, __LINE__, "bad switch");
+ internal_error (__FILE__, __LINE__, _("bad switch"));
}
throw_exception (exception);
static void
print_flush (void)
{
+ struct serial *gdb_stdout_serial;
+
if (deprecated_error_begin_hook)
deprecated_error_begin_hook ();
target_terminal_ours ();
- wrap_here (""); /* Force out any buffered output */
+
+ /* We want all output to appear now, before we print the error. We
+ have 3 levels of buffering we have to flush (it's possible that
+ some of these should be changed to flush the lower-level ones
+ too): */
+
+ /* 1. The _filtered buffer. */
+ wrap_here ("");
+
+ /* 2. The stdio buffer. */
gdb_flush (gdb_stdout);
+ gdb_flush (gdb_stderr);
+
+ /* 3. The system-level buffer. */
+ gdb_stdout_serial = serial_fdopen (1);
+ if (gdb_stdout_serial)
+ {
+ serial_drain_output (gdb_stdout_serial);
+ serial_un_fdopen (gdb_stdout_serial);
+ }
+
annotate_error_begin ();
}
static void
-print_exception (struct ui_file *file, struct exception e)
+print_exception (struct ui_file *file, struct gdb_exception e)
{
/* KLUGE: cagney/2005-01-13: Write the string out one line at a time
as that way the MI's behavior is preserved. */
}
void
-exception_print (struct ui_file *file, struct exception e)
+exception_print (struct ui_file *file, struct gdb_exception e)
{
if (e.reason < 0 && e.message != NULL)
{
}
void
-exception_fprintf (struct ui_file *file, struct exception e,
+exception_fprintf (struct ui_file *file, struct gdb_exception e,
const char *prefix, ...)
{
if (e.reason < 0 && e.message != NULL)
void
print_any_exception (struct ui_file *file, const char *prefix,
- struct exception e)
+ struct gdb_exception e)
{
if (e.reason < 0 && e.message != NULL)
{
}
}
-NORETURN static void
-throw_it (enum return_reason reason, enum errors error, const char *fmt,
- va_list ap) ATTR_NORETURN;
-NORETURN static void
+NORETURN static void ATTR_NORETURN ATTR_FORMAT (printf, 3, 0)
throw_it (enum return_reason reason, enum errors error, const char *fmt,
va_list ap)
{
- struct exception e;
+ struct gdb_exception e;
char *new_message;
/* Save the message. Create the new message before deleting the
NORETURN 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
return catch_exceptions_with_msg (uiout, func, func_args, NULL, mask);
}
-struct exception
+struct gdb_exception
catch_exception (struct ui_out *uiout,
catch_exception_ftype *func,
void *func_args,
return_mask mask)
{
- volatile struct exception exception;
- SIGJMP_BUF *catch;
- catch = catcher_init (uiout, &exception, mask);
- for (SIGSETJMP ((*catch));
- catcher_state_machine (CATCH_ITER);)
- (*func) (uiout, func_args);
+ volatile struct gdb_exception exception;
+ TRY_CATCH (exception, mask)
+ {
+ (*func) (uiout, func_args);
+ }
return exception;
}
char **gdberrmsg,
return_mask mask)
{
- volatile struct exception exception;
+ volatile struct gdb_exception exception;
volatile int val = 0;
- SIGJMP_BUF *catch = catcher_init (uiout, &exception, mask);
- for (SIGSETJMP ((*catch)); catcher_state_machine (CATCH_ITER);)
- val = (*func) (uiout, func_args);
+ TRY_CATCH (exception, mask)
+ {
+ val = (*func) (uiout, func_args);
+ }
print_any_exception (gdb_stderr, NULL, exception);
gdb_assert (val >= 0);
gdb_assert (exception.reason <= 0);
return_mask mask)
{
volatile int val = 0;
- volatile struct exception exception;
- SIGJMP_BUF *catch = catcher_init (uiout, &exception, mask);
- /* This illustrates how it is possible to nest the mechanism and
- hence catch "break". Of course this doesn't address the need to
- also catch "return". */
- for (SIGSETJMP ((*catch)); catcher_state_machine (CATCH_ITER);)
- val = func (func_args);
+ volatile struct gdb_exception exception;
+ TRY_CATCH (exception, mask)
+ {
+ val = func (func_args);
+ }
print_any_exception (gdb_stderr, errstring, exception);
if (exception.reason != 0)
return 0;
catch_command_errors (catch_command_errors_ftype * command,
char *arg, int from_tty, return_mask mask)
{
- volatile struct exception e;
- SIGJMP_BUF *catch = catcher_init (uiout, &e, mask);
- for (SIGSETJMP ((*catch)); catcher_state_machine (CATCH_ITER);)
- command (arg, from_tty);
+ volatile struct gdb_exception e;
+ TRY_CATCH (e, mask)
+ {
+ command (arg, from_tty);
+ }
print_any_exception (gdb_stderr, NULL, e);
if (e.reason < 0)
return 0;
projects / deliverable / binutils-gdb.git / blobdiff