/* Exception Handling interface routines.
- Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002
+ Free Software Foundation, Inc.
Contributed by Mike Stump <mrs@cygnus.com>.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC 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 version.
+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
+version.
-GNU CC 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.
+GCC 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 GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+along with GCC; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
-#ifndef TREE_CODE
-union tree_node;
-#define tree union tree_node *
-#endif
-
-#ifndef RTX_CODE
-struct rtx_def;
-#define rtx struct rtx_def *
-#endif
-
-#ifndef _VARRAY_H_
+#ifndef GCC_VARRAY_H
struct varray_head_tag;
#define varray_type struct varray_head_tag *
#endif
+struct function;
+
+struct inline_remap;
/* Per-function EH data. Used only in except.c, but GC and others
manipulate pointers to the opaque type. */
extern void expand_start_all_catch PARAMS ((void));
/* Begin a catch clause. TYPE is an object to be matched by the
- runtime, or null if this is a catch-all clause. */
+ runtime, or a list of such objects, or null if this is a catch-all
+ clause. */
extern void expand_start_catch PARAMS ((tree));
/* End a catch clause. Control will resume after the try/catch block. */
/* End an exception region for an exception type filter. ALLOWED is a
TREE_LIST of TREE_VALUE objects to be matched by the runtime.
- FAILURE is a function to invoke if a mismatch ocurrs. */
+ FAILURE is a function to invoke if a mismatch occurs. */
extern void expand_eh_region_end_allowed PARAMS ((tree, tree));
/* End an exception region for a must-not-throw filter. FAILURE is a
destroying an object twice. */
extern void expand_eh_region_end_fixup PARAMS ((tree));
-/* Begin a region that will contain entries created with
- add_partial_entry. */
-extern void begin_protect_partials PARAMS ((void));
-
-/* Create a new exception region and add the handler for the region
- onto a list. These regions will be ended (and their handlers emitted)
- when end_protect_partials is invoked. */
-extern void add_partial_entry PARAMS ((tree));
-
-/* End all of the pending exception regions that have handlers added with
- add_partial_entry. */
-extern void end_protect_partials PARAMS ((void));
-
-
-/* A list of labels used for exception handlers. */
-extern rtx exception_handler_labels;
+/* Invokes CALLBACK for every exception handler label. Only used by old
+ loop hackery; should not be used by new code. */
+extern void for_each_eh_label PARAMS ((void (*) (rtx)));
/* Determine if the given INSN can throw an exception. */
extern bool can_throw_internal PARAMS ((rtx));
extern void convert_from_eh_region_ranges PARAMS ((void));
extern void convert_to_eh_region_ranges PARAMS ((void));
extern void find_exception_handler_labels PARAMS ((void));
+extern bool current_function_has_exception_handlers PARAMS ((void));
extern void output_function_exception_table PARAMS ((void));
extern void expand_builtin_unwind_init PARAMS ((void));
extern rtx expand_builtin_eh_return_data_regno PARAMS ((tree));
extern rtx expand_builtin_extract_return_addr PARAMS ((tree));
+extern void expand_builtin_init_dwarf_reg_sizes PARAMS ((tree));
extern rtx expand_builtin_frob_return_addr PARAMS ((tree));
extern rtx expand_builtin_dwarf_fp_regnum PARAMS ((void));
extern void expand_builtin_eh_return PARAMS ((tree, tree));
extern void expand_eh_return PARAMS ((void));
-
-extern rtx get_exception_pointer PARAMS ((void));
-
-struct function;
-struct inline_remap;
-extern int duplicate_eh_regions PARAMS ((struct function *,
+extern rtx get_exception_pointer PARAMS ((struct function *));
+extern int duplicate_eh_regions PARAMS ((struct function *,
struct inline_remap *));
extern void sjlj_emit_function_exit_after PARAMS ((rtx));
-/* Nonzero to protect cleanup actions with must-not-throw regions. */
-extern tree protect_cleanup_actions;
+/* 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) PARAMS ((void));
/* Return true if type A catches type B. */
-int (*lang_eh_type_covers) PARAMS ((tree a, tree b));
+extern int (*lang_eh_type_covers) PARAMS ((tree a, tree b));
/* Map a type to a runtime object to match type. */
-tree (*lang_eh_runtime_type) PARAMS ((tree));
-
-#ifndef TREE_CODE
-#undef tree
-#endif
-
-#ifndef RTX_CODE
-#undef rtx
-#endif
+extern tree (*lang_eh_runtime_type) PARAMS ((tree));
-#ifndef _VARRAY_H_
+#ifndef GCC_VARRAY_H
#undef varray_type
#endif
mean that we can use call frame exceptions. Detect that the target
has appropriate support. */
-#if !defined (EH_RETURN_DATA_REGNO) \
- || !defined(EH_RETURN_STACKADJ_RTX) \
- || ! (defined(EH_RETURN_HANDLER_RTX) \
- || defined(HAVE_eh_return)) \
- || ! (defined(DWARF2_UNWIND_INFO) \
- || defined(IA64_UNWIND_INFO))
+#if ! (defined (EH_RETURN_DATA_REGNO) \
+ && (defined (IA64_UNWIND_INFO) \
+ || (DWARF2_UNWIND_INFO \
+ && defined (EH_RETURN_STACKADJ_RTX) \
+ && (defined (EH_RETURN_HANDLER_RTX) \
+ || defined (HAVE_eh_return)))))
#define MUST_USE_SJLJ_EXCEPTIONS 1
#else
#define MUST_USE_SJLJ_EXCEPTIONS 0
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