e8b22dd136
2000-01-25 Andrew Haley <aph@cygnus.com>
* java-except.h (struct eh_range): Add `expanded' field.
(maybe_start_try): Add end_pc arg.
(maybe_end_try): Ditto.
* java-tree.h (force_poplevels): new function.
* expr.c (expand_byte_code): Don't call maybe_start_try or
maybe_end_try.
* except.c (add_handler): Reset expanded.
(expand_start_java_handler): Set expanded.
(check_start_handlers): Don't expand a start handler that's
already been expanded.
(maybe_start_try): Add end_pc arg. Only expand a handler which
ends after end_pc.
(expand_end_java_handler): call force_poplevels.
(force_poplevels): new function.
* decl.c (binding_level): Add start_pc of binding level.
(maybe_pushlevels): Call maybe_start_try when pushing binding
levels.
(maybe_poplevels): Call maybe_end_try when popping binding levels.
(LARGEST_PC): Define.
(clear_binding_level): Use LARGEST_PC.
* java-tree.h (DEBUG_JAVA_BINDING_LEVELS): new define.
* decl.c (DEBUG_JAVA_BINDING_LEVELS): new define.
(binding_depth, is_class_level, current_pc): new variables.
(struct binding_level): ditto.
(indent): new function.
(push_jvm_slot): add debugging info.
(maybe_pushlevels): ditto.
(maybe_poplevels): ditto.
(pushlevel): ditto.
(poplevel): ditto.
(start_java_method): ditto.
(give_name_to_locals): comment only.
* except.c (binding_depth, is_class_level, current_pc):
new variables.
(expand_start_java_handler): add debugging info.
(expand_end_java_handler): ditto.
From-SVN: r31861
75 lines
2.5 KiB
C
75 lines
2.5 KiB
C
/* Definitions for exception handling for use by the GNU compiler
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for the Java(TM) language compiler.
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Copyright (C) 1997, 98-99, 2000 Free Software Foundation, Inc.
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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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Java and all Java-based marks are trademarks or registered trademarks
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of Sun Microsystems, Inc. in the United States and other countries.
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The Free Software Foundation is independent of Sun Microsystems, Inc. */
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struct eh_range
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{
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/* The (byte-code PC) range of the handled block. */
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int start_pc;
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int end_pc;
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/* A list of handlers. For each element in the list,
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the TREE_PURPOSE is the handled class (NULL_EXPR for a finally block),
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and the TREE_VALUE is the LABEL_DECL of the handler. */
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tree handlers;
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/* Surrunding handler, if any. */
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struct eh_range *outer;
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/* The first child range. It is is nested inside this range
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(i.e. this.start_pc <= first_child.end_pc
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&& this.end_pc >= first_child.end_pc).
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The children are linked together using next_sibling, and are sorted
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by increasing start_pc and end_pc (we do not support non-nested
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overlapping ranges). */
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struct eh_range *first_child;
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/* The next child of outer, in address order. */
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struct eh_range *next_sibling;
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/* True if this range has already been expanded. */
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int expanded;
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};
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/* A dummy range that represents the entire method. */
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extern struct eh_range whole_range;
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#define NULL_EH_RANGE (&whole_range)
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extern struct eh_range * find_handler PARAMS ((int));
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extern void method_init_exceptions PARAMS ((void));
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extern void emit_handlers PARAMS ((void));
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extern void maybe_start_try PARAMS ((int, int));
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extern void maybe_end_try PARAMS ((int, int));
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extern void add_handler PARAMS ((int, int, tree, tree));
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extern void handle_nested_ranges PARAMS ((void));
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extern void expand_resume_after_catch PARAMS ((void));
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