99 lines
2.6 KiB
C
99 lines
2.6 KiB
C
/* Exception Handling interface routines.
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Copyright (C) 1996 Free Software Foundation, Inc.
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Contributed by Mike Stump <mrs@cygnus.com>.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef GET_CODE
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#define rtx int *
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#endif
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#ifdef TREE_CODE
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struct label_node {
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union {
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rtx rlabel;
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tree tlabel;
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} u;
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struct label_node *chain;
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};
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/* A entry for the exception handling stack EHSTACK or the exception
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handling queue EHQUEUE. */
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struct eh_entry {
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rtx start_label;
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rtx end_label;
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rtx exception_handler_label;
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tree finalization;
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};
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struct eh_node {
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struct eh_entry *entry;
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struct eh_node *chain;
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};
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struct eh_stack {
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struct eh_node *top;
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};
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struct eh_queue {
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struct eh_node *head;
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struct eh_node *tail;
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};
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extern void push_label_entry PROTO((struct label_node **labelstack, rtx rlabel, tree tlabel));
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extern rtx pop_label_entry PROTO((struct label_node **labelstack));
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extern tree top_label_entry PROTO((struct label_node **labelstack));
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extern struct eh_stack ehstack;
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extern struct eh_queue ehqueue;
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extern rtx catch_clauses;
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extern tree protect_list;
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#endif
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struct function;
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extern void init_eh PROTO((void));
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extern void init_eh_for_function PROTO((void));
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extern void save_eh_status PROTO((struct function *p));
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extern void restore_eh_status PROTO((struct function *p));
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extern void add_eh_table_entry PROTO((int));
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extern int exception_table_p PROTO((void));
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extern void output_exception_table PROTO((void));
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extern rtx eh_outer_context PROTO((rtx));
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extern void emit_unwinder PROTO((void));
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extern void end_eh_unwinder PROTO((void));
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extern void find_handler_labels PROTO((void));
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extern void check_handler_labels PROTO((void));
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extern struct label_node *caught_return_label_stack;
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extern struct label_node *false_label_stack;
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extern rtx exception_handler_labels;
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/* The rtx for the saved PC value. */
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extern rtx eh_saved_pc_rtx;
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extern void exception_optimize PROTO((void));
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