X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fexceptions.h;h=e169b25c6774e64c73716817e83831593d50512f;hb=036003a671233c43e35b3004f91e4cbd61255cf3;hp=5ebde6627941f6af536ab9feed49b0d147992c60;hpb=60250e8b18a4dee75e82d49da715681d41561b3b;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/exceptions.h b/gdb/exceptions.h index 5ebde66279..e169b25c67 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 Free Software - Foundation, Inc. + Copyright (C) 1986-2019 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, @@ -17,98 +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_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. */ +#include "ui-out.h" -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; - -/* 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); +/* 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, + const struct gdb_exception &e); +extern void exception_fprintf (struct ui_file *file, + const struct gdb_exception &e, + const char *prefix, + ...) 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