FreeChainXenon/binutils-gdb
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2005-01-12 Andrew Cagney <cagney@gnu.org>

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* exceptions.h (throw_reason): Rename throw_exception.
	(enum errors, struct exception): Define.
	(catch_exception_ftype): Define.
	(catch_exception, throw_exception): Declare.
	* exceptions.c (throw_exception): Rewrite.
	(throw_reason): New function.
	(struct catcher, catcher_state_machine): Replace "reason" with
	"exception", delete "gdberrmsg".
	(catch_exception): New function.
	(catcher_init): Replace "gdberrmsg" parameter with "exception".
	(catch_errors, catch_exceptions_with_msg): Re-implement passing
	exception to catcher_init.
	* utils.c (error_silent, error_stream_1): Use throw_reason.
	(internal_verror, quit): Ditto.
	* breakpoint.c (insert_catchpoint, break_command_1): Ditto.
	* remote-fileio.c (remote_fileio_ctrl_c_signal_handler): Ditto.
	* remote.c (remote_open_1, interrupt_query): Ditto.
This commit is contained in:
Andrew Cagney 2005-01-13 00:12:50 +00:00
parent cd0960cf4e
commit 2a78bfb53c
7 changed files with 139 additions and 55 deletions
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38
gdb/exceptions.h
View file

@ -24,7 +24,7 @@
#ifndef EXCEPTIONS_H
#define EXCEPTIONS_H
/* Reasons for calling throw_exception(). NOTE: all reason values
/* Reasons for calling throw_exceptions(). 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
@ -44,17 +44,38 @@ enum return_reason
#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()).
/* Describe all exceptions. */
enum errors {
NO_ERROR,
/* Any generic error, the corresponding text is in
exception.message. */
GENERIC_ERROR,
/* Add more errors here. */
NR_ERRORS
};
struct exception
{
enum return_reason reason;
enum errors error;
char *message;
};
/* Throw an exception (as described by "struct exception"). Will
execute a LONG JUMP to the inner most containing exception handler
established using catch_exceptions() (or similar).
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. */
be a good thing or a dangerous thing.'' -- the Existential
Wombat. */
extern NORETURN void throw_exception (struct exception exception) ATTR_NORETURN;
extern NORETURN void throw_reason (enum return_reason reason) ATTR_NORETURN;
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
@ -87,11 +108,16 @@ 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);
typedef void (catch_exception_ftype) (struct ui_out *ui_out, void *args);
extern int catch_exceptions_with_msg (struct ui_out *uiout,
catch_exceptions_ftype *func,
void *func_args,
char *errstring, char **gdberrmsg,
return_mask mask);
extern struct exception catch_exception (struct ui_out *uiout,
catch_exception_ftype *func,
void *func_args,
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