X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fexcept.h;h=acc629dc5e3cbff3aea2f502f30feeca2344b722;hb=b2e02dcc7c5b43e5088291a6c6b4bb60f9c4ce3c;hp=e2c37059d77ae3a2cf17fb2744cf6adec7b1244e;hpb=5ab63d0086d619938aeaa8524acf7ece4ee71dc5;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/except.h b/gcc/except.h index e2c37059d77..acc629dc5e3 100644 --- a/gcc/except.h +++ b/gcc/except.h @@ -1,13 +1,13 @@ /* Exception Handling interface routines. - Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 - Free Software Foundation, Inc. + Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, + 2007 Free Software Foundation, Inc. Contributed by Mike Stump . 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 @@ -16,15 +16,12 @@ 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 GCC; 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 COPYING3. If not see +. */ struct function; -struct inline_remap; - /* Per-function EH data. Used only in except.c, but GC and others manipulate pointers to the opaque type. */ struct eh_status; @@ -35,63 +32,26 @@ struct eh_region; /* Test: is exception handling turned on? */ extern int doing_eh (int); -/* Start an exception handling region. All instructions emitted after - this point are considered to be part of the region until an - expand_eh_region_end variant is invoked. */ -extern void expand_eh_region_start (void); - -/* End an exception handling region for a cleanup. HANDLER is an - expression to expand for the cleanup. */ -extern void expand_eh_region_end_cleanup (tree); - -/* End an exception handling region for a try block, and prepares - for subsequent calls to expand_start_catch. */ -extern void expand_start_all_catch (void); - -/* Begin a catch clause. TYPE is an object to be matched by the - runtime, or a list of such objects, or null if this is a catch-all - clause. */ -extern void expand_start_catch (tree); - -/* End a catch clause. Control will resume after the try/catch block. */ -extern void expand_end_catch (void); - -/* End a sequence of catch handlers for a try block. */ -extern void expand_end_all_catch (void); - -/* 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 occurs. */ -extern void expand_eh_region_end_allowed (tree, tree); - -/* End an exception region for a must-not-throw filter. FAILURE is a - function to invoke if an uncaught exception propagates this far. */ -extern void expand_eh_region_end_must_not_throw (tree); - -/* End an exception region for a throw. No handling goes on here, - but it's the easiest way for the front-end to indicate what type - is being thrown. */ -extern void expand_eh_region_end_throw (tree); - -/* End a fixup region. Within this region the cleanups for the immediately - enclosing region are _not_ run. This is used for goto cleanup to avoid - destroying an object twice. */ -extern void expand_eh_region_end_fixup (tree); - /* 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 (void); +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. */ extern void for_each_eh_label (void (*) (rtx)); +/* Invokes CALLBACK for every exception region in the current function. */ +extern void for_each_eh_region (void (*) (struct eh_region *)); + /* 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_external_1 (int, bool); extern bool can_throw_external (rtx); -/* Set current_function_nothrow and cfun->all_throwers_are_sibcalls. */ -extern void set_nothrow_function_flags (void); +/* Set TREE_NOTHROW and cfun->all_throwers_are_sibcalls. */ +extern unsigned int set_nothrow_function_flags (void); /* After initial rtl generation, call back to finish generating exception support code. */ @@ -104,10 +64,10 @@ extern rtx reachable_handlers (rtx); extern void maybe_remove_eh_handler (rtx); extern void convert_from_eh_region_ranges (void); -extern void convert_to_eh_region_ranges (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); @@ -117,11 +77,44 @@ extern rtx expand_builtin_frob_return_addr (tree); extern rtx expand_builtin_dwarf_sp_column (void); 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 int duplicate_eh_regions (struct function *, struct inline_remap *); +extern rtx get_exception_filter (struct function *); +typedef tree (*duplicate_eh_regions_map) (tree, void *); +extern int duplicate_eh_regions (struct function *, duplicate_eh_regions_map, + 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 *); +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 struct eh_region *gen_eh_region_must_not_throw (struct eh_region *); +extern int get_eh_region_number (struct eh_region *); +extern bool get_eh_region_may_contain_throw (struct eh_region *); +extern tree get_eh_region_tree_label (struct eh_region *); +extern void set_eh_region_tree_label (struct eh_region *, tree); + +extern void foreach_reachable_handler (int, bool, + void (*) (struct eh_region *, void *), + void *); + +extern void collect_eh_region_array (void); +extern void expand_resx_expr (tree); +extern void verify_eh_tree (struct function *); +extern void dump_eh_tree (FILE *, struct function *); +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 @@ -142,17 +135,15 @@ extern tree (*lang_eh_runtime_type) (tree); mean that we can use call frame exceptions. Detect that the target has appropriate support. */ -#if ! (defined (EH_RETURN_DATA_REGNO) \ - && (defined (IA64_UNWIND_INFO) \ +#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 -#else -# ifdef IA64_UNWIND_INFO -# define MUST_USE_SJLJ_EXCEPTIONS 0 +# define MUST_USE_SJLJ_EXCEPTIONS 1 # else -# define MUST_USE_SJLJ_EXCEPTIONS (DWARF2_UNWIND_INFO == 0) +# define MUST_USE_SJLJ_EXCEPTIONS 0 # endif #endif @@ -168,10 +159,19 @@ extern tree (*lang_eh_runtime_type) (tree); # if !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(IA64_UNWIND_INFO) - #error "{DWARF2,IA64}_UNWIND_INFO required" +# if !defined(DWARF2_UNWIND_INFO) && !defined(TARGET_UNWIND_INFO) + #error "{DWARF2,TARGET}_UNWIND_INFO required" # endif # endif #else # define USING_SJLJ_EXCEPTIONS MUST_USE_SJLJ_EXCEPTIONS #endif + +struct throw_stmt_node GTY(()) +{ + tree 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 *);