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2005-01-12 Andrew Cagney <cagney@gnu.org>

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* exceptions.h (enum return_reason, RETURN_MASK)
	(RETURN_MASK_QUIT, RETURN_MASK_ERROR, RETURN_MASK_ALL)
	(return_mask, throw_exception, catch_exceptions_ftype)
	(catch_exceptions_with_msg, catch_errors_ftype, catch_errors)
	(catch_command_errors_ftype, catch_command_errors): Move to
	exceptions.h.
	* exceptions.c, exceptions.h: New files.
	* top.c: Do not include <setjmp.h>.
	(SIGJMP_BUF, SIGSETJMP, SIGLONGJMP, catch_return)
	(throw_exception, catcher, catch_exceptions)
	(catch_exceptions_with_msg, struct catch_errors_args)
	(do_catch_errors, catch_errors, struct captured_command_args)
	(do_captured_command, catch_command_errors): Move to exceptions.c.
	* wrapper.c, wince.c, win32-nat.c, utils.c: Include "exceptions.h".
	* tui/tui-interp.c, top.c, thread.c, symmisc.c: Ditto.
	* symfile-mem.c, stack.c, solib.c, rs6000-nat.c: Ditto.
	* remote-sds.c, remote-mips.c, remote-fileio.c: Ditto.
	* remote-e7000.c, objc-lang.c, ocd.c: Ditto.
	* remote.c, nto-procfs.c, monitor.c, mi/mi-main.c: Ditto.
	* main.c, m32r-rom.c, infrun.c, inf-loop.c: Ditto.
	* hppa-hpux-tdep.c, frame.c, event-top.c, event-loop.c: Ditto.
	* corelow.c, corefile.c, cli/cli-interp.c, breakpoint.c: Ditto.
	* ada-valprint.c, ada-lang.c: Ditto.
	* Makefile.in (HFILES_NO_SRCDIR, COMMON_OBS): Add exceptions.h and
	exceptions.o.  Update all dependencies.
This commit is contained in:
Andrew Cagney
2005-01-12 18:31:35 +00:00
parent f05692463c
commit 60250e8b18
42 changed files with 629 additions and 503 deletions
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91
gdb/defs.h
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@@ -332,6 +332,8 @@ extern char *safe_strerror (int);
extern void request_quit (int);
#define ALL_CLEANUPS ((struct cleanup *)0)
extern void do_cleanups (struct cleanup *);
extern void do_final_cleanups (struct cleanup *);
extern void do_run_cleanups (struct cleanup *);
@@ -921,95 +923,6 @@ extern void internal_warning (const char *file, int line,
extern NORETURN void nomem (long) ATTR_NORETURN;
/* Reasons for calling throw_exception(). NOTE: all reason values
must be less than zero. enum value 0 is reserved for internal use
as the return value from an initial setjmp(). The function
catch_exceptions() reserves values >= 0 as legal results from its
wrapped function. */
enum return_reason
{
/* User interrupt. */
RETURN_QUIT = -2,
/* Any other error. */
RETURN_ERROR
};
#define ALL_CLEANUPS ((struct cleanup *)0)
#define RETURN_MASK(reason) (1 << (int)(-reason))
#define RETURN_MASK_QUIT RETURN_MASK (RETURN_QUIT)
#define RETURN_MASK_ERROR RETURN_MASK (RETURN_ERROR)
#define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
typedef int return_mask;
/* Throw an exception of type RETURN_REASON. Will execute a LONG JUMP
to the inner most containing exception handler established using
catch_exceptions() (or the legacy catch_errors()).
Code normally throws an exception using error() et.al. For various
reaons, GDB also contains code that throws an exception directly.
For instance, the remote*.c targets contain CNTRL-C signal handlers
that propogate the QUIT event up the exception chain. ``This could
be a good thing or a dangerous thing.'' -- the Existential Wombat. */
extern NORETURN void throw_exception (enum return_reason) ATTR_NORETURN;
/* 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 postive or zero return value) then that value is
returned by catch_exceptions(). It is an internal_error() for
FUNC() to return a negative value.
For the period of the FUNC() call: UIOUT is installed as the output
builder; ERRSTRING is installed as the error/quit message; and a
new cleanup_chain is established. The old values are restored
before catch_exceptions() returns.
The variant catch_exceptions_with_msg() is the same as
catch_exceptions() but adds the ability to return an allocated
copy of the gdb error message. This is used when a silent error is
issued and the caller wants to manually issue the error message.
FIXME; cagney/2001-08-13: The need to override the global UIOUT
builder variable should just go away.
This function superseeds catch_errors().
This function uses SETJMP() and LONGJUMP(). */
struct ui_out;
typedef int (catch_exceptions_ftype) (struct ui_out *ui_out, void *args);
extern int catch_exceptions (struct ui_out *uiout,
catch_exceptions_ftype *func, void *func_args,
char *errstring, return_mask mask);
extern int catch_exceptions_with_msg (struct ui_out *uiout,
catch_exceptions_ftype *func,
void *func_args,
char *errstring, char **gdberrmsg,
return_mask mask);
/* If CATCH_ERRORS_FTYPE throws an error, catch_errors() returns zero
otherwize the result from CATCH_ERRORS_FTYPE is returned. It is
probably useful for CATCH_ERRORS_FTYPE to always return a non-zero
value. It's unfortunate that, catch_errors() does not return an
indication of the exact exception that it caught - quit_flag might
help.
This function is superseeded by catch_exceptions(). */
typedef int (catch_errors_ftype) (void *);
extern int catch_errors (catch_errors_ftype *, void *, char *, return_mask);
/* Template to catch_errors() that wraps calls to command
functions. */
typedef void (catch_command_errors_ftype) (char *, int);
extern int catch_command_errors (catch_command_errors_ftype *func, char *command, int from_tty, return_mask);
extern void warning (const char *, ...) ATTR_FORMAT (printf, 1, 2);
extern void vwarning (const char *, va_list args);