/* Exception Handling interface routines.
- Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
- Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
+ 2007, 2008 Free Software Foundation, Inc.
Contributed by Mike Stump <mrs@cygnus.com>.
This file is part of GCC.
GCC 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, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
struct function;
/* Note that the current EH region (if any) may contain a throw, or a
call to a function which itself may contain a throw. */
extern void note_eh_region_may_contain_throw (struct eh_region *);
-extern void note_current_region_may_contain_throw (void);
/* Invokes CALLBACK for every exception handler label. Only used by old
loop hackery; should not be used by new code. */
/* Determine if the given INSN can throw an exception. */
extern bool can_throw_internal_1 (int, bool);
-extern bool can_throw_internal (rtx);
+extern bool can_throw_internal (const_rtx);
extern bool can_throw_external_1 (int, bool);
-extern bool can_throw_external (rtx);
+extern bool can_throw_external (const_rtx);
/* Set TREE_NOTHROW and cfun->all_throwers_are_sibcalls. */
extern unsigned int set_nothrow_function_flags (void);
extern unsigned int convert_to_eh_region_ranges (void);
extern void find_exception_handler_labels (void);
extern bool current_function_has_exception_handlers (void);
-extern void output_function_exception_table (void);
+extern void output_function_exception_table (const char *);
extern void expand_builtin_unwind_init (void);
extern rtx expand_builtin_eh_return_data_regno (tree);
extern void expand_builtin_eh_return (tree, tree);
extern void expand_eh_return (void);
extern rtx expand_builtin_extend_pointer (tree);
-extern rtx get_exception_pointer (struct function *);
-extern rtx get_exception_filter (struct function *);
+extern rtx get_exception_pointer (void);
+extern rtx get_exception_filter (void);
typedef tree (*duplicate_eh_regions_map) (tree, void *);
extern int duplicate_eh_regions (struct function *, duplicate_eh_regions_map,
- void *, int, int);
+ void *, int, int);
extern void sjlj_emit_function_exit_after (rtx);
extern void default_init_unwind_resume_libfunc (void);
extern struct eh_region *gen_eh_region_cleanup (struct eh_region *,
- struct eh_region *);
+ struct eh_region *);
extern struct eh_region *gen_eh_region_try (struct eh_region *);
extern struct eh_region *gen_eh_region_catch (struct eh_region *, tree);
extern struct eh_region *gen_eh_region_allowed (struct eh_region *, tree);
extern void set_eh_region_tree_label (struct eh_region *, tree);
extern void foreach_reachable_handler (int, bool,
- void (*) (struct eh_region *, void *),
- void *);
+ void (*) (struct eh_region *, void *),
+ void *);
extern void collect_eh_region_array (void);
extern void expand_resx_expr (tree);
extern bool eh_region_outer_p (struct function *, int, int);
extern int eh_region_outermost (struct function *, int, int);
-/* tree-eh.c */
-extern void add_stmt_to_eh_region_fn (struct function *, tree, int);
-extern bool remove_stmt_from_eh_region_fn (struct function *, tree);
-extern int lookup_stmt_eh_region_fn (struct function *, tree);
-extern int lookup_stmt_eh_region (tree);
-extern bool verify_eh_edges (tree);
-
/* If non-NULL, this is a function that returns an expression to be
executed if an unhandled exception is propagated out of a cleanup
region. For example, in C++, an exception thrown by a destructor
during stack unwinding is required to result in a call to
`std::terminate', so the C++ version of this function returns a
CALL_EXPR for `std::terminate'. */
-extern tree (*lang_protect_cleanup_actions) (void);
+extern gimple (*lang_protect_cleanup_actions) (void);
/* Return true if type A catches type B. */
extern int (*lang_eh_type_covers) (tree a, tree b);
has appropriate support. */
#ifndef MUST_USE_SJLJ_EXCEPTIONS
-# if !(defined (EH_RETURN_DATA_REGNO) \
- && (defined (TARGET_UNWIND_INFO) \
- || (DWARF2_UNWIND_INFO \
- && (defined (EH_RETURN_HANDLER_RTX) \
- || defined (HAVE_eh_return)))))
-# define MUST_USE_SJLJ_EXCEPTIONS 1
+# if defined (EH_RETURN_DATA_REGNO) \
+ && (defined (TARGET_UNWIND_INFO) \
+ || (DWARF2_UNWIND_INFO \
+ && (defined (EH_RETURN_HANDLER_RTX) \
+ || defined (HAVE_eh_return))))
+# define MUST_USE_SJLJ_EXCEPTIONS 0
# else
-# define MUST_USE_SJLJ_EXCEPTIONS 0
+# define MUST_USE_SJLJ_EXCEPTIONS 1
# endif
#endif
#ifdef CONFIG_SJLJ_EXCEPTIONS
# if CONFIG_SJLJ_EXCEPTIONS == 1
-# define USING_SJLJ_EXCEPTIONS 1
+# define USING_SJLJ_EXCEPTIONS 1
# endif
# if CONFIG_SJLJ_EXCEPTIONS == 0
-# define USING_SJLJ_EXCEPTIONS 0
-# ifndef EH_RETURN_DATA_REGNO
+# define USING_SJLJ_EXCEPTIONS 0
+# if !defined(EH_RETURN_DATA_REGNO)
#error "EH_RETURN_DATA_REGNO required"
# endif
-# if !defined(EH_RETURN_HANDLER_RTX) && !defined(HAVE_eh_return)
+# if ! (defined(TARGET_UNWIND_INFO) || DWARF2_UNWIND_INFO)
+ #error "{DWARF2,TARGET}_UNWIND_INFO required"
+# endif
+# if !defined(TARGET_UNWIND_INFO) \
+ && !(defined(EH_RETURN_HANDLER_RTX) || defined(HAVE_eh_return))
#error "EH_RETURN_HANDLER_RTX or eh_return required"
# endif
-# if !defined(DWARF2_UNWIND_INFO) && !defined(TARGET_UNWIND_INFO)
- #error "{DWARF2,TARGET}_UNWIND_INFO required"
+/* Usually the above error checks will have already triggered an
+ error, but backends may set MUST_USE_SJLJ_EXCEPTIONS for their own
+ reasons. */
+# if MUST_USE_SJLJ_EXCEPTIONS
+ #error "Must use SJLJ exceptions but configured not to"
# endif
# endif
#else
-# define USING_SJLJ_EXCEPTIONS MUST_USE_SJLJ_EXCEPTIONS
+# define USING_SJLJ_EXCEPTIONS MUST_USE_SJLJ_EXCEPTIONS
#endif
struct throw_stmt_node GTY(())
{
- tree stmt;
+ gimple stmt;
int region_nr;
};
extern struct htab *get_eh_throw_stmt_table (struct function *);
extern void set_eh_throw_stmt_table (struct function *, struct htab *);
-
-#ifdef ENABLE_CHECKING
-extern void verify_eh_throw_table_statements (void);
-#endif
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