git://gcc.gnu.org / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 4956d07c MS |
1 | /* Exception Handling interface routines. |
| 2 | Copyright (C) 1996 Free Software Foundation, Inc. | |
| 3 | Contributed by Mike Stump <mrs@cygnus.com>. | |
| 4 | ||
| 5 | This file is part of GNU CC. | |
| 6 | ||
| 7 | GNU CC 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 2, or (at your option) | |
| 10 | any later version. | |
| 11 | ||
| 12 | GNU CC 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 GNU CC; see the file COPYING. If not, write to | |
| 19 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
| 20 | Boston, MA 02111-1307, USA. */ | |
| 21 | ||
| 22 | ||
| 23 | #ifndef GET_CODE | |
| 24 | #define rtx int * | |
| 25 | #endif | |
| 26 | ||
| 27 | #ifdef TREE_CODE | |
| 28 | ||
| 29 | struct label_node { | |
| 30 | union { | |
| 31 | rtx rlabel; | |
| 32 | tree tlabel; | |
| 33 | } u; | |
| 34 | struct label_node *chain; | |
| 35 | }; | |
| 36 | ||
| 37 | /* A entry for the exception handling stack EHSTACK or the exception | |
| 38 | handling queue EHQUEUE. */ | |
| 39 | struct eh_entry { | |
| 40 | rtx start_label; | |
| 41 | rtx end_label; | |
| 42 | rtx exception_handler_label; | |
| 43 | ||
| 44 | tree finalization; | |
| 45 | }; | |
| 46 | ||
| 47 | struct eh_node { | |
| 48 | struct eh_entry *entry; | |
| 49 | struct eh_node *chain; | |
| 50 | }; | |
| 51 | ||
| 52 | struct eh_stack { | |
| 53 | struct eh_node *top; | |
| 54 | }; | |
| 55 | ||
| 56 | struct eh_queue { | |
| 57 | struct eh_node *head; | |
| 58 | struct eh_node *tail; | |
| 59 | }; | |
| 60 | ||
| 61 | ||
| 62 | extern void push_label_entry PROTO((struct label_node **labelstack, rtx rlabel, tree tlabel)); | |
| 63 | extern rtx pop_label_entry PROTO((struct label_node **labelstack)); | |
| 64 | extern tree top_label_entry PROTO((struct label_node **labelstack)); | |
| 65 | ||
| 66 | extern struct eh_stack ehstack; | |
| 67 | extern struct eh_queue ehqueue; | |
| 68 | extern rtx catch_clauses; | |
| 69 | extern tree protect_list; | |
| 70 | ||
| 71 | #endif | |
| 72 | ||
| 73 | struct function; | |
| 74 | ||
| 75 | extern void init_eh PROTO((void)); | |
| 76 | extern void init_eh_for_function PROTO((void)); | |
| 77 | extern void save_eh_status PROTO((struct function *p)); | |
| 78 | extern void restore_eh_status PROTO((struct function *p)); | |
| 79 | extern void add_eh_table_entry PROTO((int)); | |
| 80 | extern int exception_table_p PROTO((void)); | |
| 81 | extern void output_exception_table PROTO((void)); | |
| 82 | extern rtx eh_outer_context PROTO((rtx)); | |
| 83 | extern void emit_unwinder PROTO((void)); | |
| 84 | extern void end_eh_unwinder PROTO((void)); | |
| 85 | extern void find_handler_labels PROTO((void)); | |
| 86 | extern void check_handler_labels PROTO((void)); | |
| 87 | ||
| 88 | ||
| 89 | extern struct label_node *caught_return_label_stack; | |
| 90 | extern struct label_node *false_label_stack; | |
| 91 | ||
| 92 | extern rtx exception_handler_labels; | |
| 93 | ||
| 94 | /* The rtx for the saved PC value. */ | |
| 95 | ||
| 96 | extern rtx eh_saved_pc_rtx; | |
| 97 | ||
| 98 | extern void exception_optimize PROTO((void)); |