[deliverable/binutils-gdb.git] / gdb / common / common-exceptions.h

/* Exception (throw catch) mechanism, for GDB, the GNU debugger.

   Copyright (C) 1986-2016 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 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   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, see <http://www.gnu.org/licenses/>.  */

#ifndef COMMON_EXCEPTIONS_H
#define COMMON_EXCEPTIONS_H

#include <setjmp.h>
#include <new>

/* 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))

typedef enum
{
  RETURN_MASK_QUIT = RETURN_MASK (RETURN_QUIT),
  RETURN_MASK_ERROR = RETURN_MASK (RETURN_ERROR),
  RETURN_MASK_ALL = (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
} return_mask;

/* Describe all exceptions.  */

enum errors {
  GDB_NO_ERROR,

  /* Any generic error, the corresponding text is in
     exception.message.  */
  GENERIC_ERROR,

  /* Something requested was not found.  */
  NOT_FOUND_ERROR,

  /* Thread library lacks support necessary for finding thread local
     storage.  */
  TLS_NO_LIBRARY_SUPPORT_ERROR,

  /* Load module not found while attempting to find thread local storage.  */
  TLS_LOAD_MODULE_NOT_FOUND_ERROR,

  /* Thread local storage has not been allocated yet.  */
  TLS_NOT_ALLOCATED_YET_ERROR,

  /* Something else went wrong while attempting to find thread local
     storage.  The ``struct gdb_exception'' message field provides
     more detail.  */
  TLS_GENERIC_ERROR,

  /* Problem parsing an XML document.  */
  XML_PARSE_ERROR,

  /* Error accessing memory.  */
  MEMORY_ERROR,

  /* Value not available.  E.g., a register was not collected in a
     traceframe.  */
  NOT_AVAILABLE_ERROR,

  /* Value was optimized out.  Note: if the value was a register, this
     means the register was not saved in the frame.  */
  OPTIMIZED_OUT_ERROR,

  /* DW_OP_GNU_entry_value resolving failed.  */
  NO_ENTRY_VALUE_ERROR,

  /* Target throwing an error has been closed.  Current command should be
     aborted as the inferior state is no longer valid.  */
  TARGET_CLOSE_ERROR,

  /* An undefined command was executed.  */
  UNDEFINED_COMMAND_ERROR,

  /* Requested feature, method, mechanism, etc. is not supported.  */
  NOT_SUPPORTED_ERROR,

  /* The number of candidates generated during line completion has
     reached the user's specified limit.  This isn't an error, this exception
     is used to halt searching for more completions, but for consistency
     "_ERROR" is appended to the name.  */
  MAX_COMPLETIONS_REACHED_ERROR,

  /* Add more errors here.  */
  NR_ERRORS
};

struct gdb_exception
{
  enum return_reason reason;
  enum errors error;
  const char *message;
};

/* The different exception mechanisms that TRY/CATCH can map to.  */

/* Make GDB exceptions use setjmp/longjmp behind the scenes.  This is
   the only mode supported when GDB is built as a C program.  */
#define GDB_XCPT_SJMP 1

/* Make GDB exceptions use try/catch behind the scenes.  */
#define GDB_XCPT_TRY 2

/* Specify this mode to build with TRY/CATCH mapped directly to raw
   try/catch.  GDB won't work correctly, but building that way catches
   code tryin to break/continue out of the try block, along with
   spurious code between the TRY and the CATCH block.  */
#define GDB_XCPT_RAW_TRY 3

#ifdef __cplusplus
# define GDB_XCPT GDB_XCPT_TRY
#else
# define GDB_XCPT GDB_XCPT_SJMP
#endif

/* Functions to drive the sjlj-based exceptions state machine.  Though
   declared here by necessity, these functions should be considered
   internal to the exceptions subsystem and not used other than via
   the TRY/CATCH (or TRY_SJLJ/CATCH_SJLJ) macros defined below.  */

extern jmp_buf *exceptions_state_mc_init (void);
extern int exceptions_state_mc_action_iter (void);
extern int exceptions_state_mc_action_iter_1 (void);
extern int exceptions_state_mc_catch (struct gdb_exception *, int);

/* Same, but for the C++ try/catch-based TRY/CATCH mechanism.  */

#if GDB_XCPT != GDB_XCPT_SJMP
extern void *exception_try_scope_entry (void);
extern void exception_try_scope_exit (void *saved_state);
extern void exception_rethrow (void);
#endif

/* Macro to wrap up standard try/catch behavior.

   The double loop lets us correctly handle code "break"ing out of the
   try catch block.  (It works as the "break" only exits the inner
   "while" loop, the outer for loop detects this handling it
   correctly.)  Of course "return" and "goto" are not so lucky.

   For instance:

   *INDENT-OFF*

   TRY
     {
     }
   CATCH (e, RETURN_MASK_ERROR)
     {
       switch (e.reason)
         {
           case RETURN_ERROR: ...
         }
     }
   END_CATCH

  Note that the SJLJ version of the macros are actually named
  TRY_SJLJ/CATCH_SJLJ in order to make it possible to call them even
  when TRY/CATCH are mapped to C++ try/catch.  The SJLJ variants are
  needed in some cases where gdb exceptions need to cross third-party
  library code compiled without exceptions support (e.g.,
  readline).  */

#define TRY_SJLJ \
     { \
       jmp_buf *buf = \
	 exceptions_state_mc_init (); \
       setjmp (*buf); \
     } \
     while (exceptions_state_mc_action_iter ()) \
       while (exceptions_state_mc_action_iter_1 ())

#define CATCH_SJLJ(EXCEPTION, MASK)				\
  {							\
    struct gdb_exception EXCEPTION;				\
    if (exceptions_state_mc_catch (&(EXCEPTION), MASK))

#define END_CATCH_SJLJ				\
  }

#if GDB_XCPT == GDB_XCPT_SJMP

/* If using SJLJ-based exceptions for all exceptions, then provide
   standard aliases.  */

#define TRY TRY_SJLJ
#define CATCH CATCH_SJLJ
#define END_CATCH END_CATCH_SJLJ

#endif /* GDB_XCPT_SJMP */

#if GDB_XCPT == GDB_XCPT_TRY || GDB_XCPT == GDB_XCPT_RAW_TRY

/* Prevent error/quit during TRY from calling cleanups established
   prior to here.  This pops out the scope in either case of normal
   exit or exception exit.  */
struct exception_try_scope
{
  exception_try_scope ()
  {
    saved_state = exception_try_scope_entry ();
  }
  ~exception_try_scope ()
  {
    exception_try_scope_exit (saved_state);
  }

  void *saved_state;
};

#if GDB_XCPT == GDB_XCPT_TRY

/* We still need to wrap TRY/CATCH in C++ so that cleanups and C++
   exceptions can coexist.  The TRY blocked is wrapped in a
   do/while(0) so that break/continue within the block works the same
   as in C.  */
#define TRY								\
  try									\
    {									\
      exception_try_scope exception_try_scope_instance;			\
      do								\
	{

#define CATCH(EXCEPTION, MASK)						\
	} while (0);							\
    }								        \
  catch (struct gdb_exception ## _ ## MASK &EXCEPTION)

#define END_CATCH				\
  catch (...)					\
  {						\
    exception_rethrow ();			\
  }

#else

#define TRY try
#define CATCH(EXCEPTION, MASK) \
  catch (struct gdb_exception ## _ ## MASK &EXCEPTION)
#define END_CATCH

#endif

/* The exception types client code may catch.  They're just shims
   around gdb_exception that add nothing but type info.  Which is used
   is selected depending on the MASK argument passed to CATCH.  */

struct gdb_exception_RETURN_MASK_ALL : public gdb_exception
{
};

struct gdb_exception_RETURN_MASK_ERROR : public gdb_exception_RETURN_MASK_ALL
{
};

struct gdb_exception_RETURN_MASK_QUIT : public gdb_exception_RETURN_MASK_ALL
{
};

#endif /* GDB_XCPT_TRY || GDB_XCPT_RAW_TRY */

/* An exception type that inherits from both std::bad_alloc and a gdb
   exception.  This is necessary because operator new can only throw
   std::bad_alloc, and OTOH, we want exceptions thrown due to memory
   allocation error to be caught by all the CATCH/RETURN_MASK_ALL
   spread around the codebase.  */

struct gdb_quit_bad_alloc
  : public gdb_exception_RETURN_MASK_QUIT,
    public std::bad_alloc
{
  explicit gdb_quit_bad_alloc (gdb_exception ex)
    : std::bad_alloc ()
  {
    gdb_exception *self = this;

    *self = ex;
  }
};

/* *INDENT-ON* */

/* Throw an exception (as described by "struct gdb_exception").  When
   GDB is built as a C program, executes a LONG JUMP to the inner most
   containing exception handler established using TRY/CATCH.  When
   built as a C++ program, throws a C++ exception, using "throw".  */
extern void throw_exception (struct gdb_exception exception)
     ATTRIBUTE_NORETURN;

/* Throw an exception by executing a LONG JUMP to the inner most
   containing exception handler established using TRY_SJLJ.  Works the
   same regardless of whether GDB is built as a C program or a C++
   program.  Necessary in some cases where we need to throw GDB
   exceptions across third-party library code (e.g., readline).  */
extern void throw_exception_sjlj (struct gdb_exception exception)
     ATTRIBUTE_NORETURN;

/* Convenience wrappers around throw_exception that throw GDB
   errors.  */
extern void throw_verror (enum errors, const char *fmt, va_list ap)
     ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (2, 0);
extern void throw_vquit (const char *fmt, va_list ap)
     ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (1, 0);
extern void throw_error (enum errors error, const char *fmt, ...)
     ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (2, 3);
extern void throw_quit (const char *fmt, ...)
     ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (1, 2);

/* A pre-defined non-exception.  */
extern const struct gdb_exception exception_none;

#endif /* COMMON_EXCEPTIONS_H */
Commit	Line	Data
ff55e1b5 GB	1	/* Exception (throw catch) mechanism, for GDB, the GNU debugger.
ff55e1b5 GB	2
618f726f	3	Copyright (C) 1986-2016 Free Software Foundation, Inc.
ff55e1b5 GB	4
	5	This file is part of GDB.
	6
	7	This program is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 3 of the License, or
	10	(at your option) any later version.
	11
	12	This program is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with this program. If not, see <http://www.gnu.org/licenses/>. */
	19
	20	#ifndef COMMON_EXCEPTIONS_H
	21	#define COMMON_EXCEPTIONS_H
	22
173981bc	23	#include <setjmp.h>
503b1c39	24	#include <new>
ff55e1b5 GB	25
	26	/* Reasons for calling throw_exceptions(). NOTE: all reason values
	27	must be less than zero. enum value 0 is reserved for internal use
	28	as the return value from an initial setjmp(). The function
	29	catch_exceptions() reserves values >= 0 as legal results from its
	30	wrapped function. */
	31
	32	enum return_reason
	33	{
	34	/* User interrupt. */
	35	RETURN_QUIT = -2,
	36	/* Any other error. */
	37	RETURN_ERROR
	38	};
	39
	40	#define RETURN_MASK(reason) (1 << (int)(-reason))
	41
	42	typedef enum
	43	{
	44	RETURN_MASK_QUIT = RETURN_MASK (RETURN_QUIT),
	45	RETURN_MASK_ERROR = RETURN_MASK (RETURN_ERROR),
	46	RETURN_MASK_ALL = (RETURN_MASK_QUIT \| RETURN_MASK_ERROR)
	47	} return_mask;
	48
	49	/* Describe all exceptions. */
	50
	51	enum errors {
	52	GDB_NO_ERROR,
	53
	54	/* Any generic error, the corresponding text is in
	55	exception.message. */
	56	GENERIC_ERROR,
	57
	58	/* Something requested was not found. */
	59	NOT_FOUND_ERROR,
	60
	61	/* Thread library lacks support necessary for finding thread local
	62	storage. */
	63	TLS_NO_LIBRARY_SUPPORT_ERROR,
	64
	65	/* Load module not found while attempting to find thread local storage. */
	66	TLS_LOAD_MODULE_NOT_FOUND_ERROR,
	67
	68	/* Thread local storage has not been allocated yet. */
	69	TLS_NOT_ALLOCATED_YET_ERROR,
	70
	71	/* Something else went wrong while attempting to find thread local
	72	storage. The ``struct gdb_exception'' message field provides
	73	more detail. */
	74	TLS_GENERIC_ERROR,
	75
	76	/* Problem parsing an XML document. */
	77	XML_PARSE_ERROR,
	78
	79	/* Error accessing memory. */
	80	MEMORY_ERROR,
	81
	82	/* Value not available. E.g., a register was not collected in a
	83	traceframe. */
	84	NOT_AVAILABLE_ERROR,
	85
	86	/* Value was optimized out. Note: if the value was a register, this
	87	means the register was not saved in the frame. */
	88	OPTIMIZED_OUT_ERROR,
89
90	/* DW_OP_GNU_entry_value resolving failed. */
91	NO_ENTRY_VALUE_ERROR,
92
93	/* Target throwing an error has been closed. Current command should be
94	aborted as the inferior state is no longer valid. */
95	TARGET_CLOSE_ERROR,
96
97	/* An undefined command was executed. */
98	UNDEFINED_COMMAND_ERROR,
99
100	/* Requested feature, method, mechanism, etc. is not supported. */
101	NOT_SUPPORTED_ERROR,
102
ef0b411a GB	103	/* The number of candidates generated during line completion has
	104	reached the user's specified limit. This isn't an error, this exception
	105	is used to halt searching for more completions, but for consistency
	106	"_ERROR" is appended to the name. */
	107	MAX_COMPLETIONS_REACHED_ERROR,
	108
ff55e1b5 GB	109	/* Add more errors here. */
	110	NR_ERRORS
	111	};
	112
	113	struct gdb_exception
	114	{
	115	enum return_reason reason;
	116	enum errors error;
	117	const char *message;
	118	};
	119
eec461d0 PA	120	/* The different exception mechanisms that TRY/CATCH can map to. */
	121
	122	/* Make GDB exceptions use setjmp/longjmp behind the scenes. This is
	123	the only mode supported when GDB is built as a C program. */
	124	#define GDB_XCPT_SJMP 1
	125
6290672f	126	/* Make GDB exceptions use try/catch behind the scenes. */
eec461d0 PA	127	#define GDB_XCPT_TRY 2
	128
	129	/* Specify this mode to build with TRY/CATCH mapped directly to raw
	130	try/catch. GDB won't work correctly, but building that way catches
	131	code tryin to break/continue out of the try block, along with
	132	spurious code between the TRY and the CATCH block. */
	133	#define GDB_XCPT_RAW_TRY 3
	134
6290672f PA	135	#ifdef __cplusplus
	136	# define GDB_XCPT GDB_XCPT_TRY
	137	#else
	138	# define GDB_XCPT GDB_XCPT_SJMP
	139	#endif
eec461d0	140
89525768 PA	141	/* Functions to drive the sjlj-based exceptions state machine. Though
	142	declared here by necessity, these functions should be considered
	143	internal to the exceptions subsystem and not used other than via
	144	the TRY/CATCH (or TRY_SJLJ/CATCH_SJLJ) macros defined below. */
ff55e1b5	145
173981bc	146	extern jmp_buf *exceptions_state_mc_init (void);
ff55e1b5 GB	147	extern int exceptions_state_mc_action_iter (void);
ff55e1b5 GB	148	extern int exceptions_state_mc_action_iter_1 (void);
492d29ea	149	extern int exceptions_state_mc_catch (struct gdb_exception *, int);
89525768 PA	150
	151	/* Same, but for the C++ try/catch-based TRY/CATCH mechanism. */
	152
	153	#if GDB_XCPT != GDB_XCPT_SJMP
72df25b2 PA	154	extern void *exception_try_scope_entry (void);
	155	extern void exception_try_scope_exit (void *saved_state);
	156	extern void exception_rethrow (void);
	157	#endif
ff55e1b5 GB	158
	159	/* Macro to wrap up standard try/catch behavior.
	160
	161	The double loop lets us correctly handle code "break"ing out of the
	162	try catch block. (It works as the "break" only exits the inner
	163	"while" loop, the outer for loop detects this handling it
	164	correctly.) Of course "return" and "goto" are not so lucky.
	165
	166	For instance:
	167
	168	INDENT-OFF
	169
492d29ea	170	TRY
ff55e1b5 GB	171	{
ff55e1b5 GB	172	}
492d29ea	173	CATCH (e, RETURN_MASK_ERROR)
ff55e1b5	174	{
492d29ea PA	175	switch (e.reason)
	176	{
	177	case RETURN_ERROR: ...
	178	}
ff55e1b5	179	}
492d29ea	180	END_CATCH
ff55e1b5	181
89525768 PA	182	Note that the SJLJ version of the macros are actually named
	183	TRY_SJLJ/CATCH_SJLJ in order to make it possible to call them even
	184	when TRY/CATCH are mapped to C++ try/catch. The SJLJ variants are
	185	needed in some cases where gdb exceptions need to cross third-party
	186	library code compiled without exceptions support (e.g.,
	187	readline). */
ff55e1b5	188
89525768	189	#define TRY_SJLJ \
ff55e1b5	190	{ \
173981bc	191	jmp_buf *buf = \
492d29ea	192	exceptions_state_mc_init (); \
173981bc	193	setjmp (*buf); \
ff55e1b5 GB	194	} \
	195	while (exceptions_state_mc_action_iter ()) \
	196	while (exceptions_state_mc_action_iter_1 ())
	197
89525768	198	#define CATCH_SJLJ(EXCEPTION, MASK) \
492d29ea PA	199	{ \
	200	struct gdb_exception EXCEPTION; \
	201	if (exceptions_state_mc_catch (&(EXCEPTION), MASK))
	202
89525768	203	#define END_CATCH_SJLJ \
492d29ea PA	204	}
492d29ea PA	205
89525768 PA	206	#if GDB_XCPT == GDB_XCPT_SJMP
	207
	208	/* If using SJLJ-based exceptions for all exceptions, then provide
	209	standard aliases. */
	210
	211	#define TRY TRY_SJLJ
	212	#define CATCH CATCH_SJLJ
	213	#define END_CATCH END_CATCH_SJLJ
	214
eec461d0 PA	215	#endif /* GDB_XCPT_SJMP */
	216
	217	#if GDB_XCPT == GDB_XCPT_TRY \|\| GDB_XCPT == GDB_XCPT_RAW_TRY
72df25b2 PA	218
	219	/* Prevent error/quit during TRY from calling cleanups established
	220	prior to here. This pops out the scope in either case of normal
	221	exit or exception exit. */
	222	struct exception_try_scope
	223	{
	224	exception_try_scope ()
	225	{
	226	saved_state = exception_try_scope_entry ();
	227	}
	228	~exception_try_scope ()
	229	{
	230	exception_try_scope_exit (saved_state);
	231	}
	232
	233	void *saved_state;
	234	};
	235
eec461d0	236	#if GDB_XCPT == GDB_XCPT_TRY
9c6595ab	237
72df25b2 PA	238	/* We still need to wrap TRY/CATCH in C++ so that cleanups and C++
	239	exceptions can coexist. The TRY blocked is wrapped in a
	240	do/while(0) so that break/continue within the block works the same
	241	as in C. */
	242	#define TRY \
	243	try \
	244	{ \
	245	exception_try_scope exception_try_scope_instance; \
	246	do \
	247	{
	248
	249	#define CATCH(EXCEPTION, MASK) \
	250	} while (0); \
	251	} \
	252	catch (struct gdb_exception ## _ ## MASK &EXCEPTION)
	253
	254	#define END_CATCH \
	255	catch (...) \
	256	{ \
	257	exception_rethrow (); \
	258	}
eec461d0	259
9c6595ab PA	260	#else
	261
	262	#define TRY try
	263	#define CATCH(EXCEPTION, MASK) \
	264	catch (struct gdb_exception ## _ ## MASK &EXCEPTION)
	265	#define END_CATCH
	266
	267	#endif
72df25b2 PA	268
	269	/* The exception types client code may catch. They're just shims
	270	around gdb_exception that add nothing but type info. Which is used
	271	is selected depending on the MASK argument passed to CATCH. */
	272
	273	struct gdb_exception_RETURN_MASK_ALL : public gdb_exception
	274	{
	275	};
	276
	277	struct gdb_exception_RETURN_MASK_ERROR : public gdb_exception_RETURN_MASK_ALL
	278	{
	279	};
	280
	281	struct gdb_exception_RETURN_MASK_QUIT : public gdb_exception_RETURN_MASK_ALL
	282	{
	283	};
	284
eec461d0	285	#endif /* GDB_XCPT_TRY \|\| GDB_XCPT_RAW_TRY */
72df25b2	286
503b1c39 PA	287	/* An exception type that inherits from both std::bad_alloc and a gdb
	288	exception. This is necessary because operator new can only throw
	289	std::bad_alloc, and OTOH, we want exceptions thrown due to memory
	290	allocation error to be caught by all the CATCH/RETURN_MASK_ALL
	291	spread around the codebase. */
	292
	293	struct gdb_quit_bad_alloc
	294	: public gdb_exception_RETURN_MASK_QUIT,
	295	public std::bad_alloc
	296	{
	297	explicit gdb_quit_bad_alloc (gdb_exception ex)
	298	: std::bad_alloc ()
	299	{
	300	gdb_exception *self = this;
	301
	302	*self = ex;
	303	}
	304	};
	305
ff55e1b5 GB	306	/* INDENT-ON */
ff55e1b5 GB	307
89525768 PA	308	/* Throw an exception (as described by "struct gdb_exception"). When
	309	GDB is built as a C program, executes a LONG JUMP to the inner most
	310	containing exception handler established using TRY/CATCH. When
	311	built as a C++ program, throws a C++ exception, using "throw". */
ff55e1b5 GB	312	extern void throw_exception (struct gdb_exception exception)
ff55e1b5 GB	313	ATTRIBUTE_NORETURN;
89525768 PA	314
	315	/* Throw an exception by executing a LONG JUMP to the inner most
	316	containing exception handler established using TRY_SJLJ. Works the
	317	same regardless of whether GDB is built as a C program or a C++
	318	program. Necessary in some cases where we need to throw GDB
	319	exceptions across third-party library code (e.g., readline). */
	320	extern void throw_exception_sjlj (struct gdb_exception exception)
	321	ATTRIBUTE_NORETURN;
	322
	323	/* Convenience wrappers around throw_exception that throw GDB
	324	errors. */
ff55e1b5 GB	325	extern void throw_verror (enum errors, const char *fmt, va_list ap)
	326	ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (2, 0);
	327	extern void throw_vquit (const char *fmt, va_list ap)
	328	ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (1, 0);
	329	extern void throw_error (enum errors error, const char *fmt, ...)
	330	ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (2, 3);
	331	extern void throw_quit (const char *fmt, ...)
	332	ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (1, 2);
	333
ad6aff7d PA	334	/* A pre-defined non-exception. */
	335	extern const struct gdb_exception exception_none;
	336
ff55e1b5	337	#endif /* COMMON_EXCEPTIONS_H */