X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fexceptions.h;h=b982fa51ee35893625864604b64b8d9a080fe343;hb=f1f28025c3ea75d5368ddd3046461648145b89b3;hp=fe19ecdae80978a0cd95141822b59fc0606df4cd;hpb=315a522ef2ae8795eef052cf2ab94eb973e24424;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/exceptions.h b/gdb/exceptions.h index fe19ecdae8..b982fa51ee 100644 --- a/gdb/exceptions.h +++ b/gdb/exceptions.h @@ -1,14 +1,12 @@ /* 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) 1986-2020 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, @@ -17,146 +15,23 @@ 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., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ + along with this program. If not, see . */ #ifndef EXCEPTIONS_H #define EXCEPTIONS_H -/* 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 - wrapped function. */ - -enum return_reason - { - /* User interrupt. */ - RETURN_QUIT = -2, - /* Any other error. */ - RETURN_ERROR - }; - -#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; - -/* Describe all exceptions. */ - -enum errors { - NO_ERROR, - /* Any generic error, the corresponding text is in - exception.message. */ - GENERIC_ERROR, - NOT_FOUND_ERROR, - /* Add more errors here. */ - NR_ERRORS -}; - -struct exception -{ - enum return_reason reason; - enum errors error; - const char *message; -}; - -/* A pre-defined non-exception. */ -extern const struct exception exception_none; +#include "ui-out.h" /* If E is an exception, print it's error message on the specified - stream. for _fprintf, prefix the message with PREFIX... */ -extern void exception_print (struct ui_file *file, struct exception e); -extern void exception_fprintf (struct ui_file *file, struct exception e, + stream. For _fprintf, prefix the message with PREFIX... */ +extern void exception_print (struct ui_file *file, + const struct gdb_exception &e); +extern void exception_fprintf (struct ui_file *file, + const struct gdb_exception &e, const char *prefix, - ...) ATTR_FORMAT (printf, 3, 4); - -/* 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. */ - -extern NORETURN void throw_exception (struct exception exception) ATTR_NORETURN; -extern NORETURN void throw_verror (enum errors, const char *fmt, - va_list ap) ATTR_NORETURN; -extern NORETURN void throw_vfatal (const char *fmt, va_list ap) ATTR_NORETURN; -extern NORETURN void throw_error (enum errors error, const char *fmt, - ...) ATTR_NORETURN ATTR_FORMAT (printf, 2, 3); - -/* Instead of deprecated_throw_reason, code should use catch_exception - and throw_exception. */ -extern NORETURN void deprecated_throw_reason (enum return_reason 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, - 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 **gdberrmsg, - return_mask mask); - -/* This function, in addition, suppresses the printing of the captured - error message. It's up to the client to print it. */ - -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 - 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); + ...) ATTRIBUTE_PRINTF (3, 4); +/* Compare two exception objects for print equality. */ +extern int exception_print_same (const struct gdb_exception &e1, + const struct gdb_exception &e2); #endif