3194 lines
96 KiB
C
3194 lines
96 KiB
C
/* Functions related to building classes and their related objects.
|
||
Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
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2005, 2006, 2007 Free Software Foundation, Inc.
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||
|
||
This file is part of GCC.
|
||
|
||
GCC 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
|
||
the Free Software Foundation; either version 3, or (at your option)
|
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any later version.
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||
|
||
GCC is distributed in the hope that it will be useful,
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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.
|
||
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You should have received a copy of the GNU General Public License
|
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>.
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||
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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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||
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/* Written by Per Bothner <bothner@cygnus.com> */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "tree.h"
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#include "rtl.h"
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#include "flags.h"
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#include "java-tree.h"
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#include "jcf.h"
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#include "obstack.h"
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#include "toplev.h"
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#include "output.h"
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#include "parse.h"
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#include "function.h"
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#include "ggc.h"
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#include "stdio.h"
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#include "target.h"
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#include "except.h"
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#include "cgraph.h"
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#include "tree-iterator.h"
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#include "cgraph.h"
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#include "vecprim.h"
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/* DOS brain-damage */
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#ifndef O_BINARY
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#define O_BINARY 0 /* MS-DOS brain-damage */
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#endif
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static tree make_method_value (tree);
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static tree build_java_method_type (tree, tree, int);
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static int32 hashUtf8String (const char *, int);
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static tree make_field_value (tree);
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static tree get_dispatch_vector (tree);
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static tree get_dispatch_table (tree, tree);
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static int supers_all_compiled (tree type);
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static tree maybe_layout_super_class (tree, tree);
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static void add_miranda_methods (tree, tree);
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static int assume_compiled (const char *);
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static tree build_symbol_entry (tree, tree);
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static tree emit_assertion_table (tree);
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static void register_class (void);
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struct obstack temporary_obstack;
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static const char *cyclic_inheritance_report;
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/* The compiler generates different code depending on whether or not
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it can assume certain classes have been compiled down to native
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code or not. The compiler options -fassume-compiled= and
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-fno-assume-compiled= are used to create a tree of
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class_flag_node objects. This tree is queried to determine if
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a class is assume to be compiled or not. Each node in the tree
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represents either a package or a specific class. */
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typedef struct class_flag_node_struct
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{
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/* The class or package name. */
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const char *ident;
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/* Nonzero if this represents an exclusion. */
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int value;
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/* Pointers to other nodes in the tree. */
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struct class_flag_node_struct *parent;
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struct class_flag_node_struct *sibling;
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struct class_flag_node_struct *child;
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} class_flag_node;
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static class_flag_node *find_class_flag_node (class_flag_node *, const char *);
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static void add_class_flag (class_flag_node **, const char *, int);
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/* This is the root of the include/exclude tree. */
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static class_flag_node *assume_compiled_tree;
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static class_flag_node *enable_assert_tree;
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static GTY(()) tree class_roots[4];
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#define fields_ident class_roots[0] /* get_identifier ("fields") */
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#define info_ident class_roots[1] /* get_identifier ("info") */
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#define class_list class_roots[2]
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#define class_dtable_decl class_roots[3]
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static GTY(()) VEC(tree,gc) *registered_class;
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/* A tree that returns the address of the class$ of the class
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currently being compiled. */
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static GTY(()) tree this_classdollar;
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/* Return the node that most closely represents the class whose name
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is IDENT. Start the search from NODE (followed by its siblings).
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Return NULL if an appropriate node does not exist. */
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static class_flag_node *
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find_class_flag_node (class_flag_node *node, const char *ident)
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{
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while (node)
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{
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size_t node_ident_length = strlen (node->ident);
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/* node_ident_length is zero at the root of the tree. If the
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identifiers are the same length, then we have matching
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classes. Otherwise check if we've matched an enclosing
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package name. */
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if (node_ident_length == 0
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|| (strncmp (ident, node->ident, node_ident_length) == 0
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&& (ident[node_ident_length] == '\0'
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|| ident[node_ident_length] == '.')))
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{
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/* We've found a match, however, there might be a more
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specific match. */
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class_flag_node *found = find_class_flag_node (node->child, ident);
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if (found)
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return found;
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else
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return node;
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}
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/* No match yet. Continue through the sibling list. */
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node = node->sibling;
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}
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/* No match at all in this tree. */
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return NULL;
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}
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void
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add_class_flag (class_flag_node **rootp, const char *ident, int value)
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{
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class_flag_node *root = *rootp;
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class_flag_node *parent, *node;
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/* Create the root of the tree if it doesn't exist yet. */
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if (NULL == root)
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{
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root = XNEW (class_flag_node);
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root->ident = "";
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root->value = 0;
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root->sibling = NULL;
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root->child = NULL;
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root->parent = NULL;
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*rootp = root;
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}
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/* Calling the function with the empty string means we're setting
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value for the root of the hierarchy. */
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if (0 == ident[0])
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{
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root->value = value;
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return;
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}
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/* Find the parent node for this new node. PARENT will either be a
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class or a package name. Adjust PARENT accordingly. */
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parent = find_class_flag_node (root, ident);
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if (strcmp (ident, parent->ident) == 0)
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parent->value = value;
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else
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{
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/* Insert new node into the tree. */
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node = XNEW (class_flag_node);
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node->ident = xstrdup (ident);
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node->value = value;
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node->child = NULL;
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node->parent = parent;
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node->sibling = parent->child;
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parent->child = node;
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}
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}
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/* Add a new IDENT to the include/exclude tree. It's an exclusion
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if EXCLUDEP is nonzero. */
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void
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add_assume_compiled (const char *ident, int excludep)
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{
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add_class_flag (&assume_compiled_tree, ident, excludep);
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}
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/* The default value returned by enable_assertions. */
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#define DEFAULT_ENABLE_ASSERT (optimize == 0)
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/* Enter IDENT (a class or package name) into the enable-assertions table.
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VALUE is true to enable and false to disable. */
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void
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add_enable_assert (const char *ident, int value)
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{
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if (enable_assert_tree == NULL)
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add_class_flag (&enable_assert_tree, "", DEFAULT_ENABLE_ASSERT);
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add_class_flag (&enable_assert_tree, ident, value);
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}
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/* Returns nonzero if IDENT is the name of a class that the compiler
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should assume has been compiled to object code. */
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static int
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assume_compiled (const char *ident)
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{
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class_flag_node *i;
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int result;
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if (NULL == assume_compiled_tree)
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return 1;
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i = find_class_flag_node (assume_compiled_tree, ident);
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result = ! i->value;
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return (result);
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}
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/* Return true if we should generate code to check assertions within KLASS. */
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bool
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enable_assertions (tree klass)
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{
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/* Check if command-line specifies whether we should check assertions. */
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if (klass != NULL_TREE && DECL_NAME (klass) && enable_assert_tree != NULL)
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{
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const char *ident = IDENTIFIER_POINTER (DECL_NAME (klass));
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class_flag_node *node
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= find_class_flag_node (enable_assert_tree, ident);
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return node->value;
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}
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/* The default is to enable assertions if generating class files,
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or not optimizing. */
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return DEFAULT_ENABLE_ASSERT;
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}
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/* Return an IDENTIFIER_NODE the same as (OLD_NAME, OLD_LENGTH).
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except that characters matching OLD_CHAR are substituted by NEW_CHAR.
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Also, PREFIX is prepended, and SUFFIX is appended. */
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tree
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ident_subst (const char* old_name,
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int old_length,
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const char *prefix,
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int old_char,
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int new_char,
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const char *suffix)
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{
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int prefix_len = strlen (prefix);
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int suffix_len = strlen (suffix);
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int i = prefix_len + old_length + suffix_len + 1;
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char *buffer = alloca (i);
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strcpy (buffer, prefix);
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for (i = 0; i < old_length; i++)
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{
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char ch = old_name[i];
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if (ch == old_char)
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ch = new_char;
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buffer[prefix_len + i] = ch;
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}
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strcpy (buffer + prefix_len + old_length, suffix);
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return get_identifier (buffer);
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}
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/* Return an IDENTIFIER_NODE the same as OLD_ID,
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except that characters matching OLD_CHAR are substituted by NEW_CHAR.
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Also, PREFIX is prepended, and SUFFIX is appended. */
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tree
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identifier_subst (const tree old_id,
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const char *prefix,
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int old_char,
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int new_char,
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const char *suffix)
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{
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return ident_subst (IDENTIFIER_POINTER (old_id), IDENTIFIER_LENGTH (old_id),
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prefix, old_char, new_char, suffix);
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}
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/* Generate a valid C identifier from the name of the class TYPE,
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prefixed by PREFIX. */
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tree
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mangled_classname (const char *prefix, tree type)
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{
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tree result;
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tree ident = TYPE_NAME (type);
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if (TREE_CODE (ident) != IDENTIFIER_NODE)
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ident = DECL_NAME (ident);
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result = identifier_subst (ident, prefix, '.', '_', "");
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|
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/* Replace any characters that aren't in the set [0-9a-zA-Z_$] with
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"_0xXX". Class names containing such chracters are uncommon, but
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they do sometimes occur in class files. Without this check,
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||
these names cause assembly errors.
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There is a possibility that a real class name could conflict with
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the identifier we generate, but it is unlikely and will
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immediately be detected as an assembler error. At some point we
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should do something more elaborate (perhaps using the full
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unicode mangling scheme) in order to prevent such a conflict. */
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{
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||
int i;
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const int len = IDENTIFIER_LENGTH (result);
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const char *p = IDENTIFIER_POINTER (result);
|
||
int illegal_chars = 0;
|
||
|
||
/* Make two passes over the identifier. The first pass is merely
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||
to count illegal characters; we need to do this in order to
|
||
allocate a buffer. */
|
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for (i = 0; i < len; i++)
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{
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||
char c = p[i];
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illegal_chars += (! ISALNUM (c) && c != '_' && c != '$');
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}
|
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|
||
/* And the second pass, which is rarely executed, does the
|
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rewriting. */
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if (illegal_chars != 0)
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{
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||
char *buffer = alloca (illegal_chars * 4 + len + 1);
|
||
int j;
|
||
|
||
for (i = 0, j = 0; i < len; i++)
|
||
{
|
||
char c = p[i];
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||
if (! ISALNUM (c) && c != '_' && c != '$')
|
||
{
|
||
buffer[j++] = '_';
|
||
sprintf (&buffer[j], "0x%02x", c);
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||
j += 4;
|
||
}
|
||
else
|
||
buffer[j++] = c;
|
||
}
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||
|
||
buffer[j] = 0;
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||
result = get_identifier (buffer);
|
||
}
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
tree
|
||
make_class (void)
|
||
{
|
||
tree type;
|
||
type = make_node (RECORD_TYPE);
|
||
/* Unfortunately we must create the binfo here, so that class
|
||
loading works. */
|
||
TYPE_BINFO (type) = make_tree_binfo (0);
|
||
MAYBE_CREATE_TYPE_TYPE_LANG_SPECIFIC (type);
|
||
|
||
return type;
|
||
}
|
||
|
||
/* Given a fully-qualified classname in NAME (whose length is NAME_LENGTH),
|
||
and where each of the constituents is separated by '/',
|
||
return a corresponding IDENTIFIER_NODE, except using '.' as separator. */
|
||
|
||
tree
|
||
unmangle_classname (const char *name, int name_length)
|
||
{
|
||
tree to_return = ident_subst (name, name_length, "", '/', '.', "");
|
||
/* It's not sufficient to compare to_return and get_identifier
|
||
(name) to determine whether to_return is qualified. There are
|
||
cases in signature analysis where name will be stripped of a
|
||
trailing ';'. */
|
||
name = IDENTIFIER_POINTER (to_return);
|
||
while (*name)
|
||
if (*name++ == '.')
|
||
{
|
||
QUALIFIED_P (to_return) = 1;
|
||
break;
|
||
}
|
||
|
||
return to_return;
|
||
}
|
||
|
||
#define GEN_TABLE(TABLE, NAME, TABLE_TYPE, TYPE) \
|
||
do \
|
||
{ \
|
||
const char *typename = IDENTIFIER_POINTER (mangled_classname ("", TYPE)); \
|
||
char *buf = alloca (strlen (typename) + strlen (#NAME "_syms_") + 1); \
|
||
tree decl; \
|
||
\
|
||
sprintf (buf, #NAME "_%s", typename); \
|
||
TYPE_## TABLE ##_DECL (type) = decl = \
|
||
build_decl (VAR_DECL, get_identifier (buf), TABLE_TYPE); \
|
||
DECL_EXTERNAL (decl) = 1; \
|
||
TREE_STATIC (decl) = 1; \
|
||
TREE_READONLY (decl) = 1; \
|
||
TREE_CONSTANT (decl) = 1; \
|
||
DECL_IGNORED_P (decl) = 1; \
|
||
/* Mark the table as belonging to this class. */ \
|
||
pushdecl (decl); \
|
||
MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (decl); \
|
||
DECL_OWNER (decl) = TYPE; \
|
||
sprintf (buf, #NAME "_syms_%s", typename); \
|
||
TYPE_## TABLE ##_SYMS_DECL (TYPE) = \
|
||
build_decl (VAR_DECL, get_identifier (buf), symbols_array_type); \
|
||
TREE_STATIC (TYPE_## TABLE ##_SYMS_DECL (TYPE)) = 1; \
|
||
TREE_CONSTANT (TYPE_## TABLE ##_SYMS_DECL (TYPE)) = 1; \
|
||
DECL_IGNORED_P (TYPE_## TABLE ##_SYMS_DECL (TYPE)) = 1; \
|
||
} \
|
||
while (0)
|
||
|
||
/* Given a class, create the DECLs for all its associated indirect
|
||
dispatch tables. */
|
||
void
|
||
gen_indirect_dispatch_tables (tree type)
|
||
{
|
||
const char *typename = IDENTIFIER_POINTER (mangled_classname ("", type));
|
||
{
|
||
tree field = NULL;
|
||
char *buf = alloca (strlen (typename) + strlen ("_catch_classes_") + 1);
|
||
tree catch_class_type = make_node (RECORD_TYPE);
|
||
|
||
sprintf (buf, "_catch_classes_%s", typename);
|
||
PUSH_FIELD (catch_class_type, field, "address", utf8const_ptr_type);
|
||
PUSH_FIELD (catch_class_type, field, "classname", ptr_type_node);
|
||
FINISH_RECORD (catch_class_type);
|
||
|
||
TYPE_CTABLE_DECL (type)
|
||
= build_decl (VAR_DECL, get_identifier (buf),
|
||
build_array_type (catch_class_type, 0));
|
||
DECL_EXTERNAL (TYPE_CTABLE_DECL (type)) = 1;
|
||
TREE_STATIC (TYPE_CTABLE_DECL (type)) = 1;
|
||
TREE_READONLY (TYPE_CTABLE_DECL (type)) = 1;
|
||
TREE_CONSTANT (TYPE_CTABLE_DECL (type)) = 1;
|
||
DECL_IGNORED_P (TYPE_CTABLE_DECL (type)) = 1;
|
||
pushdecl (TYPE_CTABLE_DECL (type));
|
||
}
|
||
|
||
if (flag_indirect_dispatch)
|
||
{
|
||
GEN_TABLE (ATABLE, _atable, atable_type, type);
|
||
GEN_TABLE (OTABLE, _otable, otable_type, type);
|
||
GEN_TABLE (ITABLE, _itable, itable_type, type);
|
||
}
|
||
}
|
||
|
||
#undef GEN_TABLE
|
||
|
||
tree
|
||
push_class (tree class_type, tree class_name)
|
||
{
|
||
tree decl, signature;
|
||
location_t saved_loc = input_location;
|
||
#ifndef USE_MAPPED_LOCATION
|
||
input_filename = "<unknown>";
|
||
input_line = 0;
|
||
#endif
|
||
CLASS_P (class_type) = 1;
|
||
decl = build_decl (TYPE_DECL, class_name, class_type);
|
||
TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
|
||
|
||
/* dbxout needs a DECL_SIZE if in gstabs mode */
|
||
DECL_SIZE (decl) = integer_zero_node;
|
||
|
||
input_location = saved_loc;
|
||
signature = identifier_subst (class_name, "L", '.', '/', ";");
|
||
IDENTIFIER_SIGNATURE_TYPE (signature) = build_pointer_type (class_type);
|
||
|
||
/* Setting DECL_ARTIFICIAL forces dbxout.c to specific the type is
|
||
both a typedef and in the struct name-space. We may want to re-visit
|
||
this later, but for now it reduces the changes needed for gdb. */
|
||
DECL_ARTIFICIAL (decl) = 1;
|
||
|
||
pushdecl_top_level (decl);
|
||
|
||
return decl;
|
||
}
|
||
|
||
/* Finds the (global) class named NAME. Creates the class if not found.
|
||
Also creates associated TYPE_DECL.
|
||
Does not check if the class actually exists, load the class,
|
||
fill in field or methods, or do layout_type. */
|
||
|
||
tree
|
||
lookup_class (tree name)
|
||
{
|
||
tree decl = IDENTIFIER_CLASS_VALUE (name);
|
||
if (decl == NULL_TREE)
|
||
decl = push_class (make_class (), name);
|
||
return TREE_TYPE (decl);
|
||
}
|
||
|
||
void
|
||
set_super_info (int access_flags, tree this_class,
|
||
tree super_class, int interfaces_count)
|
||
{
|
||
int total_supers = interfaces_count;
|
||
tree class_decl = TYPE_NAME (this_class);
|
||
|
||
if (super_class)
|
||
total_supers++;
|
||
|
||
if (total_supers)
|
||
TYPE_BINFO (this_class) = make_tree_binfo (total_supers);
|
||
TYPE_VFIELD (this_class) = TYPE_VFIELD (object_type_node);
|
||
if (super_class)
|
||
{
|
||
tree super_binfo = make_tree_binfo (0);
|
||
BINFO_TYPE (super_binfo) = super_class;
|
||
BINFO_OFFSET (super_binfo) = integer_zero_node;
|
||
BINFO_BASE_APPEND (TYPE_BINFO (this_class), super_binfo);
|
||
CLASS_HAS_SUPER_FLAG (TYPE_BINFO (this_class)) = 1;
|
||
}
|
||
|
||
set_class_decl_access_flags (access_flags, class_decl);
|
||
}
|
||
|
||
void
|
||
set_class_decl_access_flags (int access_flags, tree class_decl)
|
||
{
|
||
if (access_flags & ACC_PUBLIC) CLASS_PUBLIC (class_decl) = 1;
|
||
if (access_flags & ACC_FINAL) CLASS_FINAL (class_decl) = 1;
|
||
if (access_flags & ACC_SUPER) CLASS_SUPER (class_decl) = 1;
|
||
if (access_flags & ACC_INTERFACE) CLASS_INTERFACE (class_decl) = 1;
|
||
if (access_flags & ACC_ABSTRACT) CLASS_ABSTRACT (class_decl) = 1;
|
||
if (access_flags & ACC_STATIC) CLASS_STATIC (class_decl) = 1;
|
||
if (access_flags & ACC_PRIVATE) CLASS_PRIVATE (class_decl) = 1;
|
||
if (access_flags & ACC_PROTECTED) CLASS_PROTECTED (class_decl) = 1;
|
||
if (access_flags & ACC_STRICT) CLASS_STRICTFP (class_decl) = 1;
|
||
if (access_flags & ACC_ENUM) CLASS_ENUM (class_decl) = 1;
|
||
if (access_flags & ACC_SYNTHETIC) CLASS_SYNTHETIC (class_decl) = 1;
|
||
if (access_flags & ACC_ANNOTATION) CLASS_ANNOTATION (class_decl) = 1;
|
||
}
|
||
|
||
/* Return length of inheritance chain of CLAS, where java.lang.Object is 0,
|
||
direct sub-classes of Object are 1, and so on. */
|
||
|
||
int
|
||
class_depth (tree clas)
|
||
{
|
||
int depth = 0;
|
||
if (! CLASS_LOADED_P (clas))
|
||
load_class (clas, 1);
|
||
if (TYPE_SIZE (clas) == error_mark_node)
|
||
return -1;
|
||
while (clas != object_type_node)
|
||
{
|
||
depth++;
|
||
clas = BINFO_TYPE (BINFO_BASE_BINFO (TYPE_BINFO (clas), 0));
|
||
}
|
||
return depth;
|
||
}
|
||
|
||
/* Return true iff TYPE2 is an interface that extends interface TYPE1 */
|
||
|
||
int
|
||
interface_of_p (tree type1, tree type2)
|
||
{
|
||
int i;
|
||
tree binfo, base_binfo;
|
||
|
||
if (! TYPE_BINFO (type2))
|
||
return 0;
|
||
|
||
for (binfo = TYPE_BINFO (type2), i = 0;
|
||
BINFO_BASE_ITERATE (binfo, i, base_binfo); i++)
|
||
if (BINFO_TYPE (base_binfo) == type1)
|
||
return 1;
|
||
|
||
for (binfo = TYPE_BINFO (type2), i = 0;
|
||
BINFO_BASE_ITERATE (binfo, i, base_binfo); i++) /* */
|
||
if (BINFO_TYPE (base_binfo)
|
||
&& interface_of_p (type1, BINFO_TYPE (base_binfo)))
|
||
return 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Return true iff TYPE1 inherits from TYPE2. */
|
||
|
||
int
|
||
inherits_from_p (tree type1, tree type2)
|
||
{
|
||
while (type1 != NULL_TREE && TREE_CODE (type1) == RECORD_TYPE)
|
||
{
|
||
if (type1 == type2)
|
||
return 1;
|
||
|
||
if (! CLASS_LOADED_P (type1))
|
||
load_class (type1, 1);
|
||
|
||
type1 = maybe_layout_super_class (CLASSTYPE_SUPER (type1), type1);
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/* Return a 1 iff TYPE1 is an enclosing context for TYPE2 */
|
||
|
||
int
|
||
enclosing_context_p (tree type1, tree type2)
|
||
{
|
||
if (!INNER_CLASS_TYPE_P (type2))
|
||
return 0;
|
||
|
||
for (type2 = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (type2)));
|
||
type2;
|
||
type2 = (INNER_CLASS_TYPE_P (type2) ?
|
||
TREE_TYPE (DECL_CONTEXT (TYPE_NAME (type2))) : NULL_TREE))
|
||
{
|
||
if (type2 == type1)
|
||
return 1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Return 1 iff TYPE1 and TYPE2 share a common enclosing class, regardless of
|
||
nesting level. */
|
||
|
||
int
|
||
common_enclosing_context_p (tree type1, tree type2)
|
||
{
|
||
while (type1)
|
||
{
|
||
tree current;
|
||
for (current = type2; current;
|
||
current = (INNER_CLASS_TYPE_P (current) ?
|
||
TREE_TYPE (DECL_CONTEXT (TYPE_NAME (current))) :
|
||
NULL_TREE))
|
||
if (type1 == current)
|
||
return 1;
|
||
|
||
if (INNER_CLASS_TYPE_P (type1))
|
||
type1 = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (type1)));
|
||
else
|
||
break;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/* Return 1 iff there exists a common enclosing "this" between TYPE1
|
||
and TYPE2, without crossing any static context. */
|
||
|
||
int
|
||
common_enclosing_instance_p (tree type1, tree type2)
|
||
{
|
||
if (!PURE_INNER_CLASS_TYPE_P (type1) || !PURE_INNER_CLASS_TYPE_P (type2))
|
||
return 0;
|
||
|
||
for (type1 = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (type1))); type1;
|
||
type1 = (PURE_INNER_CLASS_TYPE_P (type1) ?
|
||
TREE_TYPE (DECL_CONTEXT (TYPE_NAME (type1))) : NULL_TREE))
|
||
{
|
||
tree current;
|
||
for (current = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (type2))); current;
|
||
current = (PURE_INNER_CLASS_TYPE_P (current) ?
|
||
TREE_TYPE (DECL_CONTEXT (TYPE_NAME (current))) :
|
||
NULL_TREE))
|
||
if (type1 == current)
|
||
return 1;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/* Add INTERFACE_CLASS to THIS_CLASS iff INTERFACE_CLASS can't be
|
||
found in THIS_CLASS. Returns NULL_TREE upon success, INTERFACE_CLASS
|
||
if attempt is made to add it twice. */
|
||
|
||
tree
|
||
maybe_add_interface (tree this_class, tree interface_class)
|
||
{
|
||
tree binfo, base_binfo;
|
||
int i;
|
||
|
||
for (binfo = TYPE_BINFO (this_class), i = 0;
|
||
BINFO_BASE_ITERATE (binfo, i, base_binfo); i++)
|
||
if (BINFO_TYPE (base_binfo) == interface_class)
|
||
return interface_class;
|
||
add_interface (this_class, interface_class);
|
||
return NULL_TREE;
|
||
}
|
||
|
||
/* Add the INTERFACE_CLASS as one of the interfaces of THIS_CLASS. */
|
||
|
||
void
|
||
add_interface (tree this_class, tree interface_class)
|
||
{
|
||
tree interface_binfo = make_tree_binfo (0);
|
||
|
||
BINFO_TYPE (interface_binfo) = interface_class;
|
||
BINFO_OFFSET (interface_binfo) = integer_zero_node;
|
||
BINFO_VPTR_FIELD (interface_binfo) = integer_zero_node;
|
||
BINFO_VIRTUAL_P (interface_binfo) = 1;
|
||
|
||
BINFO_BASE_APPEND (TYPE_BINFO (this_class), interface_binfo);
|
||
}
|
||
|
||
static tree
|
||
build_java_method_type (tree fntype, tree this_class, int access_flags)
|
||
{
|
||
if (access_flags & ACC_STATIC)
|
||
return fntype;
|
||
fntype = build_method_type (this_class, fntype);
|
||
|
||
/* We know that arg 1 of every nonstatic method is non-null; tell
|
||
the back-end so. */
|
||
TYPE_ATTRIBUTES (fntype) = (tree_cons
|
||
(get_identifier ("nonnull"),
|
||
tree_cons (NULL_TREE,
|
||
build_int_cst (NULL_TREE, 1),
|
||
NULL_TREE),
|
||
TYPE_ATTRIBUTES (fntype)));
|
||
return fntype;
|
||
}
|
||
|
||
void
|
||
java_hide_decl (tree decl ATTRIBUTE_UNUSED)
|
||
{
|
||
#ifdef HAVE_GAS_HIDDEN
|
||
DECL_VISIBILITY (decl) = VISIBILITY_HIDDEN;
|
||
DECL_VISIBILITY_SPECIFIED (decl) = 1;
|
||
#endif
|
||
}
|
||
|
||
tree
|
||
add_method_1 (tree this_class, int access_flags, tree name, tree function_type)
|
||
{
|
||
tree method_type, fndecl;
|
||
|
||
method_type = build_java_method_type (function_type,
|
||
this_class, access_flags);
|
||
|
||
fndecl = build_decl (FUNCTION_DECL, name, method_type);
|
||
DECL_CONTEXT (fndecl) = this_class;
|
||
|
||
DECL_LANG_SPECIFIC (fndecl)
|
||
= ggc_alloc_cleared (sizeof (struct lang_decl));
|
||
DECL_LANG_SPECIFIC (fndecl)->desc = LANG_DECL_FUNC;
|
||
|
||
/* Initialize the static initializer test table. */
|
||
|
||
DECL_FUNCTION_INIT_TEST_TABLE (fndecl) =
|
||
java_treetreehash_create (10, 1);
|
||
|
||
/* Initialize the initialized (static) class table. */
|
||
if (access_flags & ACC_STATIC)
|
||
DECL_FUNCTION_INITIALIZED_CLASS_TABLE (fndecl) =
|
||
htab_create_ggc (50, htab_hash_pointer, htab_eq_pointer, NULL);
|
||
|
||
TREE_CHAIN (fndecl) = TYPE_METHODS (this_class);
|
||
TYPE_METHODS (this_class) = fndecl;
|
||
|
||
/* If pointers to member functions use the least significant bit to
|
||
indicate whether a function is virtual, ensure a pointer
|
||
to this function will have that bit clear. */
|
||
if (TARGET_PTRMEMFUNC_VBIT_LOCATION == ptrmemfunc_vbit_in_pfn
|
||
&& !(access_flags & ACC_STATIC)
|
||
&& DECL_ALIGN (fndecl) < 2 * BITS_PER_UNIT)
|
||
DECL_ALIGN (fndecl) = 2 * BITS_PER_UNIT;
|
||
|
||
/* Notice that this is a finalizer and update the class type
|
||
accordingly. This is used to optimize instance allocation. */
|
||
if (name == finalize_identifier_node
|
||
&& TREE_TYPE (function_type) == void_type_node
|
||
&& TREE_VALUE (TYPE_ARG_TYPES (function_type)) == void_type_node)
|
||
HAS_FINALIZER_P (this_class) = 1;
|
||
|
||
if (access_flags & ACC_PUBLIC) METHOD_PUBLIC (fndecl) = 1;
|
||
if (access_flags & ACC_PROTECTED) METHOD_PROTECTED (fndecl) = 1;
|
||
if (access_flags & ACC_PRIVATE)
|
||
METHOD_PRIVATE (fndecl) = DECL_INLINE (fndecl) = 1;
|
||
if (access_flags & ACC_NATIVE)
|
||
{
|
||
METHOD_NATIVE (fndecl) = 1;
|
||
DECL_EXTERNAL (fndecl) = 1;
|
||
}
|
||
else
|
||
/* FNDECL is external unless we are compiling it into this object
|
||
file. */
|
||
DECL_EXTERNAL (fndecl) = CLASS_FROM_CURRENTLY_COMPILED_P (this_class) == 0;
|
||
if (access_flags & ACC_STATIC)
|
||
METHOD_STATIC (fndecl) = DECL_INLINE (fndecl) = 1;
|
||
if (access_flags & ACC_FINAL)
|
||
METHOD_FINAL (fndecl) = DECL_INLINE (fndecl) = 1;
|
||
if (access_flags & ACC_SYNCHRONIZED) METHOD_SYNCHRONIZED (fndecl) = 1;
|
||
if (access_flags & ACC_ABSTRACT) METHOD_ABSTRACT (fndecl) = 1;
|
||
if (access_flags & ACC_STRICT) METHOD_STRICTFP (fndecl) = 1;
|
||
if (access_flags & ACC_SYNTHETIC) DECL_ARTIFICIAL (fndecl) = 1;
|
||
if (access_flags & ACC_BRIDGE) METHOD_BRIDGE (fndecl) = 1;
|
||
if (access_flags & ACC_VARARGS) METHOD_VARARGS (fndecl) = 1;
|
||
return fndecl;
|
||
}
|
||
|
||
/* Add a method to THIS_CLASS.
|
||
The method's name is NAME.
|
||
Its signature (mangled type) is METHOD_SIG (an IDENTIFIER_NODE). */
|
||
|
||
tree
|
||
add_method (tree this_class, int access_flags, tree name, tree method_sig)
|
||
{
|
||
tree function_type, fndecl;
|
||
const unsigned char *sig
|
||
= (const unsigned char *) IDENTIFIER_POINTER (method_sig);
|
||
|
||
if (sig[0] != '(')
|
||
fatal_error ("bad method signature");
|
||
|
||
function_type = get_type_from_signature (method_sig);
|
||
fndecl = add_method_1 (this_class, access_flags, name, function_type);
|
||
set_java_signature (TREE_TYPE (fndecl), method_sig);
|
||
return fndecl;
|
||
}
|
||
|
||
tree
|
||
add_field (tree class, tree name, tree field_type, int flags)
|
||
{
|
||
int is_static = (flags & ACC_STATIC) != 0;
|
||
tree field;
|
||
field = build_decl (is_static ? VAR_DECL : FIELD_DECL, name, field_type);
|
||
TREE_CHAIN (field) = TYPE_FIELDS (class);
|
||
TYPE_FIELDS (class) = field;
|
||
DECL_CONTEXT (field) = class;
|
||
MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (field);
|
||
|
||
if (flags & ACC_PUBLIC) FIELD_PUBLIC (field) = 1;
|
||
if (flags & ACC_PROTECTED) FIELD_PROTECTED (field) = 1;
|
||
if (flags & ACC_PRIVATE) FIELD_PRIVATE (field) = 1;
|
||
if (flags & ACC_FINAL) FIELD_FINAL (field) = 1;
|
||
if (flags & ACC_VOLATILE)
|
||
{
|
||
FIELD_VOLATILE (field) = 1;
|
||
TREE_THIS_VOLATILE (field) = 1;
|
||
}
|
||
if (flags & ACC_TRANSIENT) FIELD_TRANSIENT (field) = 1;
|
||
if (flags & ACC_ENUM) FIELD_ENUM (field) = 1;
|
||
if (flags & ACC_SYNTHETIC) FIELD_SYNTHETIC (field) = 1;
|
||
if (is_static)
|
||
{
|
||
FIELD_STATIC (field) = 1;
|
||
/* Always make field externally visible. This is required so
|
||
that native methods can always access the field. */
|
||
TREE_PUBLIC (field) = 1;
|
||
/* Hide everything that shouldn't be visible outside a DSO. */
|
||
if (flag_indirect_classes
|
||
|| (FIELD_PRIVATE (field)))
|
||
java_hide_decl (field);
|
||
/* Considered external unless we are compiling it into this
|
||
object file. */
|
||
DECL_EXTERNAL (field) = (is_compiled_class (class) != 2);
|
||
}
|
||
|
||
return field;
|
||
}
|
||
|
||
/* Associate a constant value CONSTANT with VAR_DECL FIELD. */
|
||
|
||
void
|
||
set_constant_value (tree field, tree constant)
|
||
{
|
||
if (field == NULL_TREE)
|
||
warning (OPT_Wattributes,
|
||
"misplaced ConstantValue attribute (not in any field)");
|
||
else if (DECL_INITIAL (field) != NULL_TREE)
|
||
warning (OPT_Wattributes,
|
||
"duplicate ConstantValue attribute for field '%s'",
|
||
IDENTIFIER_POINTER (DECL_NAME (field)));
|
||
else
|
||
{
|
||
DECL_INITIAL (field) = constant;
|
||
if (TREE_TYPE (constant) != TREE_TYPE (field)
|
||
&& ! (TREE_TYPE (constant) == int_type_node
|
||
&& INTEGRAL_TYPE_P (TREE_TYPE (field))
|
||
&& TYPE_PRECISION (TREE_TYPE (field)) <= 32)
|
||
&& ! (TREE_TYPE (constant) == utf8const_ptr_type
|
||
&& TREE_TYPE (field) == string_ptr_type_node))
|
||
error ("ConstantValue attribute of field '%s' has wrong type",
|
||
IDENTIFIER_POINTER (DECL_NAME (field)));
|
||
}
|
||
}
|
||
|
||
/* Calculate a hash value for a string encoded in Utf8 format.
|
||
* This returns the same hash value as specified for java.lang.String.hashCode.
|
||
*/
|
||
|
||
static int32
|
||
hashUtf8String (const char *str, int len)
|
||
{
|
||
const unsigned char* ptr = (const unsigned char*) str;
|
||
const unsigned char *limit = ptr + len;
|
||
int32 hash = 0;
|
||
for (; ptr < limit;)
|
||
{
|
||
int ch = UTF8_GET (ptr, limit);
|
||
/* Updated specification from
|
||
http://www.javasoft.com/docs/books/jls/clarify.html. */
|
||
hash = (31 * hash) + ch;
|
||
}
|
||
return hash;
|
||
}
|
||
|
||
static GTY(()) tree utf8_decl_list = NULL_TREE;
|
||
|
||
tree
|
||
build_utf8_ref (tree name)
|
||
{
|
||
const char * name_ptr = IDENTIFIER_POINTER(name);
|
||
int name_len = IDENTIFIER_LENGTH(name);
|
||
char buf[60];
|
||
tree ctype, field = NULL_TREE, str_type, cinit, string;
|
||
static int utf8_count = 0;
|
||
int name_hash;
|
||
tree ref = IDENTIFIER_UTF8_REF (name);
|
||
tree decl;
|
||
if (ref != NULL_TREE)
|
||
return ref;
|
||
|
||
ctype = make_node (RECORD_TYPE);
|
||
str_type = build_prim_array_type (unsigned_byte_type_node,
|
||
name_len + 1); /* Allow for final '\0'. */
|
||
PUSH_FIELD (ctype, field, "hash", unsigned_short_type_node);
|
||
PUSH_FIELD (ctype, field, "length", unsigned_short_type_node);
|
||
PUSH_FIELD (ctype, field, "data", str_type);
|
||
FINISH_RECORD (ctype);
|
||
START_RECORD_CONSTRUCTOR (cinit, ctype);
|
||
name_hash = hashUtf8String (name_ptr, name_len) & 0xFFFF;
|
||
PUSH_FIELD_VALUE (cinit, "hash", build_int_cst (NULL_TREE, name_hash));
|
||
PUSH_FIELD_VALUE (cinit, "length", build_int_cst (NULL_TREE, name_len));
|
||
string = build_string (name_len, name_ptr);
|
||
TREE_TYPE (string) = str_type;
|
||
PUSH_FIELD_VALUE (cinit, "data", string);
|
||
FINISH_RECORD_CONSTRUCTOR (cinit);
|
||
TREE_CONSTANT (cinit) = 1;
|
||
TREE_INVARIANT (cinit) = 1;
|
||
|
||
/* Generate a unique-enough identifier. */
|
||
sprintf(buf, "_Utf%d", ++utf8_count);
|
||
|
||
decl = build_decl (VAR_DECL, get_identifier (buf), utf8const_type);
|
||
TREE_STATIC (decl) = 1;
|
||
DECL_ARTIFICIAL (decl) = 1;
|
||
DECL_IGNORED_P (decl) = 1;
|
||
TREE_READONLY (decl) = 1;
|
||
TREE_THIS_VOLATILE (decl) = 0;
|
||
DECL_INITIAL (decl) = cinit;
|
||
|
||
if (HAVE_GAS_SHF_MERGE)
|
||
{
|
||
int decl_size;
|
||
/* Ensure decl_size is a multiple of utf8const_type's alignment. */
|
||
decl_size = (name_len + 5 + TYPE_ALIGN_UNIT (utf8const_type) - 1)
|
||
& ~(TYPE_ALIGN_UNIT (utf8const_type) - 1);
|
||
if (flag_merge_constants && decl_size < 256)
|
||
{
|
||
char buf[32];
|
||
int flags = (SECTION_OVERRIDE
|
||
| SECTION_MERGE | (SECTION_ENTSIZE & decl_size));
|
||
sprintf (buf, ".rodata.jutf8.%d", decl_size);
|
||
switch_to_section (get_section (buf, flags, NULL));
|
||
DECL_SECTION_NAME (decl) = build_string (strlen (buf), buf);
|
||
}
|
||
}
|
||
|
||
TREE_CHAIN (decl) = utf8_decl_list;
|
||
layout_decl (decl, 0);
|
||
pushdecl (decl);
|
||
rest_of_decl_compilation (decl, global_bindings_p (), 0);
|
||
varpool_mark_needed_node (varpool_node (decl));
|
||
utf8_decl_list = decl;
|
||
ref = build1 (ADDR_EXPR, utf8const_ptr_type, decl);
|
||
IDENTIFIER_UTF8_REF (name) = ref;
|
||
return ref;
|
||
}
|
||
|
||
/* Like build_class_ref, but instead of a direct reference generate a
|
||
pointer into the constant pool. */
|
||
|
||
static tree
|
||
build_indirect_class_ref (tree type)
|
||
{
|
||
int index;
|
||
tree cl;
|
||
index = alloc_class_constant (type);
|
||
cl = build_ref_from_constant_pool (index);
|
||
return convert (promote_type (class_ptr_type), cl);
|
||
}
|
||
|
||
static tree
|
||
build_static_class_ref (tree type)
|
||
{
|
||
tree decl_name, decl, ref;
|
||
|
||
if (TYPE_SIZE (type) == error_mark_node)
|
||
return null_pointer_node;
|
||
decl_name = identifier_subst (DECL_NAME (TYPE_NAME (type)),
|
||
"", '/', '/', ".class$$");
|
||
decl = IDENTIFIER_GLOBAL_VALUE (decl_name);
|
||
if (decl == NULL_TREE)
|
||
{
|
||
decl = build_decl (VAR_DECL, decl_name, class_type_node);
|
||
TREE_STATIC (decl) = 1;
|
||
if (! flag_indirect_classes)
|
||
{
|
||
TREE_PUBLIC (decl) = 1;
|
||
if (CLASS_PRIVATE (TYPE_NAME (type)))
|
||
java_hide_decl (decl);
|
||
}
|
||
DECL_IGNORED_P (decl) = 1;
|
||
DECL_ARTIFICIAL (decl) = 1;
|
||
if (is_compiled_class (type) == 1)
|
||
DECL_EXTERNAL (decl) = 1;
|
||
MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (decl);
|
||
DECL_CLASS_FIELD_P (decl) = 1;
|
||
DECL_CONTEXT (decl) = type;
|
||
|
||
/* ??? We want to preserve the DECL_CONTEXT we set just above,
|
||
that that means not calling pushdecl_top_level. */
|
||
IDENTIFIER_GLOBAL_VALUE (decl_name) = decl;
|
||
}
|
||
|
||
ref = build1 (ADDR_EXPR, class_ptr_type, decl);
|
||
return ref;
|
||
}
|
||
|
||
static tree
|
||
build_classdollar_field (tree type)
|
||
{
|
||
tree decl_name = identifier_subst (DECL_NAME (TYPE_NAME (type)),
|
||
"", '/', '/', ".class$");
|
||
tree decl = IDENTIFIER_GLOBAL_VALUE (decl_name);
|
||
|
||
if (decl == NULL_TREE)
|
||
{
|
||
decl
|
||
= build_decl (VAR_DECL, decl_name,
|
||
(build_type_variant
|
||
(build_pointer_type
|
||
(build_type_variant (class_type_node,
|
||
/* const */ 1, 0)),
|
||
/* const */ 1, 0)));
|
||
TREE_STATIC (decl) = 1;
|
||
TREE_INVARIANT (decl) = 1;
|
||
TREE_CONSTANT (decl) = 1;
|
||
TREE_READONLY (decl) = 1;
|
||
TREE_PUBLIC (decl) = 1;
|
||
java_hide_decl (decl);
|
||
DECL_IGNORED_P (decl) = 1;
|
||
DECL_ARTIFICIAL (decl) = 1;
|
||
MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (decl);
|
||
IDENTIFIER_GLOBAL_VALUE (decl_name) = decl;
|
||
DECL_CLASS_FIELD_P (decl) = 1;
|
||
DECL_CONTEXT (decl) = type;
|
||
}
|
||
|
||
return decl;
|
||
}
|
||
|
||
/* Create a local variable that holds the current class$. */
|
||
|
||
void
|
||
cache_this_class_ref (tree fndecl)
|
||
{
|
||
if (optimize)
|
||
{
|
||
tree classdollar_field;
|
||
if (flag_indirect_classes)
|
||
classdollar_field = build_classdollar_field (output_class);
|
||
else
|
||
classdollar_field = build_static_class_ref (output_class);
|
||
|
||
this_classdollar = build_decl (VAR_DECL, NULL_TREE,
|
||
TREE_TYPE (classdollar_field));
|
||
|
||
java_add_local_var (this_classdollar);
|
||
java_add_stmt (build2 (MODIFY_EXPR, TREE_TYPE (this_classdollar),
|
||
this_classdollar, classdollar_field));
|
||
}
|
||
else
|
||
this_classdollar = build_classdollar_field (output_class);
|
||
|
||
/* Prepend class initialization for static methods reachable from
|
||
other classes. */
|
||
if (METHOD_STATIC (fndecl)
|
||
&& (! METHOD_PRIVATE (fndecl)
|
||
|| INNER_CLASS_P (DECL_CONTEXT (fndecl)))
|
||
&& ! DECL_CLINIT_P (fndecl)
|
||
&& ! CLASS_INTERFACE (TYPE_NAME (DECL_CONTEXT (fndecl))))
|
||
{
|
||
tree init = build_call_expr (soft_initclass_node, 1,
|
||
this_classdollar);
|
||
java_add_stmt (init);
|
||
}
|
||
}
|
||
|
||
/* Remove the reference to the local variable that holds the current
|
||
class$. */
|
||
|
||
void
|
||
uncache_this_class_ref (tree fndecl ATTRIBUTE_UNUSED)
|
||
{
|
||
this_classdollar = build_classdollar_field (output_class);
|
||
}
|
||
|
||
/* Build a reference to the class TYPE.
|
||
Also handles primitive types and array types. */
|
||
|
||
tree
|
||
build_class_ref (tree type)
|
||
{
|
||
int is_compiled = is_compiled_class (type);
|
||
if (is_compiled)
|
||
{
|
||
tree ref, decl;
|
||
if (TREE_CODE (type) == POINTER_TYPE)
|
||
type = TREE_TYPE (type);
|
||
|
||
if (flag_indirect_dispatch
|
||
&& type != output_class
|
||
&& TREE_CODE (type) == RECORD_TYPE)
|
||
return build_indirect_class_ref (type);
|
||
|
||
if (type == output_class && flag_indirect_classes)
|
||
return this_classdollar;
|
||
|
||
if (TREE_CODE (type) == RECORD_TYPE)
|
||
return build_static_class_ref (type);
|
||
else
|
||
{
|
||
const char *name;
|
||
tree decl_name;
|
||
char buffer[25];
|
||
decl_name = TYPE_NAME (type);
|
||
if (TREE_CODE (decl_name) == TYPE_DECL)
|
||
decl_name = DECL_NAME (decl_name);
|
||
name = IDENTIFIER_POINTER (decl_name);
|
||
if (strncmp (name, "promoted_", 9) == 0)
|
||
name += 9;
|
||
sprintf (buffer, "_Jv_%sClass", name);
|
||
decl_name = get_identifier (buffer);
|
||
decl = IDENTIFIER_GLOBAL_VALUE (decl_name);
|
||
if (decl == NULL_TREE)
|
||
{
|
||
decl = build_decl (VAR_DECL, decl_name, class_type_node);
|
||
TREE_STATIC (decl) = 1;
|
||
TREE_PUBLIC (decl) = 1;
|
||
DECL_EXTERNAL (decl) = 1;
|
||
DECL_ARTIFICIAL (decl) = 1;
|
||
pushdecl_top_level (decl);
|
||
}
|
||
}
|
||
|
||
ref = build1 (ADDR_EXPR, class_ptr_type, decl);
|
||
return ref;
|
||
}
|
||
else
|
||
return build_indirect_class_ref (type);
|
||
}
|
||
|
||
/* Create a local statically allocated variable that will hold a
|
||
pointer to a static field. */
|
||
|
||
static tree
|
||
build_fieldref_cache_entry (int index, tree fdecl ATTRIBUTE_UNUSED)
|
||
{
|
||
tree decl, decl_name;
|
||
const char *name = IDENTIFIER_POINTER (mangled_classname ("_cpool_", output_class));
|
||
char *buf = alloca (strlen (name) + 20);
|
||
sprintf (buf, "%s_%d_ref", name, index);
|
||
decl_name = get_identifier (buf);
|
||
decl = IDENTIFIER_GLOBAL_VALUE (decl_name);
|
||
if (decl == NULL_TREE)
|
||
{
|
||
decl = build_decl (VAR_DECL, decl_name, ptr_type_node);
|
||
TREE_STATIC (decl) = 1;
|
||
TREE_PUBLIC (decl) = 0;
|
||
DECL_EXTERNAL (decl) = 0;
|
||
DECL_ARTIFICIAL (decl) = 1;
|
||
DECL_IGNORED_P (decl) = 1;
|
||
pushdecl_top_level (decl);
|
||
}
|
||
return decl;
|
||
}
|
||
|
||
tree
|
||
build_static_field_ref (tree fdecl)
|
||
{
|
||
tree fclass = DECL_CONTEXT (fdecl);
|
||
int is_compiled = is_compiled_class (fclass);
|
||
|
||
/* Allow static final fields to fold to a constant. When using
|
||
-findirect-dispatch, we simply never do this folding if compiling
|
||
from .class; in the .class file constants will be referred to via
|
||
the constant pool. */
|
||
if (!flag_indirect_dispatch
|
||
&& (is_compiled
|
||
|| (FIELD_FINAL (fdecl) && DECL_INITIAL (fdecl) != NULL_TREE
|
||
&& (JSTRING_TYPE_P (TREE_TYPE (fdecl))
|
||
|| JNUMERIC_TYPE_P (TREE_TYPE (fdecl)))
|
||
&& TREE_CONSTANT (DECL_INITIAL (fdecl)))))
|
||
{
|
||
if (is_compiled == 1)
|
||
DECL_EXTERNAL (fdecl) = 1;
|
||
}
|
||
else
|
||
{
|
||
/* Generate a CONSTANT_FieldRef for FDECL in the constant pool
|
||
and a class local static variable CACHE_ENTRY, then
|
||
|
||
*(fdecl **)((__builtin_expect (cache_entry == null, false))
|
||
? cache_entry = _Jv_ResolvePoolEntry (output_class, cpool_index)
|
||
: cache_entry)
|
||
|
||
This can mostly be optimized away, so that the usual path is a
|
||
load followed by a test and branch. _Jv_ResolvePoolEntry is
|
||
only called once for each constant pool entry.
|
||
|
||
There is an optimization that we don't do: at the start of a
|
||
method, create a local copy of CACHE_ENTRY and use that instead.
|
||
|
||
*/
|
||
|
||
int cpool_index = alloc_constant_fieldref (output_class, fdecl);
|
||
tree cache_entry = build_fieldref_cache_entry (cpool_index, fdecl);
|
||
tree test
|
||
= build_call_expr (built_in_decls[BUILT_IN_EXPECT], 2,
|
||
build2 (EQ_EXPR, boolean_type_node,
|
||
cache_entry, null_pointer_node),
|
||
boolean_false_node);
|
||
tree cpool_index_cst = build_int_cst (NULL_TREE, cpool_index);
|
||
tree init
|
||
= build_call_expr (soft_resolvepoolentry_node, 2,
|
||
build_class_ref (output_class),
|
||
cpool_index_cst);
|
||
init = build2 (MODIFY_EXPR, ptr_type_node, cache_entry, init);
|
||
init = build3 (COND_EXPR, ptr_type_node, test, init, cache_entry);
|
||
init = fold_convert (build_pointer_type (TREE_TYPE (fdecl)), init);
|
||
fdecl = build1 (INDIRECT_REF, TREE_TYPE (fdecl), init);
|
||
}
|
||
return fdecl;
|
||
}
|
||
|
||
int
|
||
get_access_flags_from_decl (tree decl)
|
||
{
|
||
int access_flags = 0;
|
||
if (TREE_CODE (decl) == FIELD_DECL || TREE_CODE (decl) == VAR_DECL)
|
||
{
|
||
if (FIELD_STATIC (decl))
|
||
access_flags |= ACC_STATIC;
|
||
if (FIELD_PUBLIC (decl))
|
||
access_flags |= ACC_PUBLIC;
|
||
if (FIELD_PROTECTED (decl))
|
||
access_flags |= ACC_PROTECTED;
|
||
if (FIELD_PRIVATE (decl))
|
||
access_flags |= ACC_PRIVATE;
|
||
if (FIELD_FINAL (decl))
|
||
access_flags |= ACC_FINAL;
|
||
if (FIELD_VOLATILE (decl))
|
||
access_flags |= ACC_VOLATILE;
|
||
if (FIELD_TRANSIENT (decl))
|
||
access_flags |= ACC_TRANSIENT;
|
||
if (FIELD_ENUM (decl))
|
||
access_flags |= ACC_ENUM;
|
||
if (FIELD_SYNTHETIC (decl))
|
||
access_flags |= ACC_SYNTHETIC;
|
||
return access_flags;
|
||
}
|
||
if (TREE_CODE (decl) == TYPE_DECL)
|
||
{
|
||
if (CLASS_PUBLIC (decl))
|
||
access_flags |= ACC_PUBLIC;
|
||
if (CLASS_FINAL (decl))
|
||
access_flags |= ACC_FINAL;
|
||
if (CLASS_SUPER (decl))
|
||
access_flags |= ACC_SUPER;
|
||
if (CLASS_INTERFACE (decl))
|
||
access_flags |= ACC_INTERFACE;
|
||
if (CLASS_ABSTRACT (decl))
|
||
access_flags |= ACC_ABSTRACT;
|
||
if (CLASS_STATIC (decl))
|
||
access_flags |= ACC_STATIC;
|
||
if (CLASS_PRIVATE (decl))
|
||
access_flags |= ACC_PRIVATE;
|
||
if (CLASS_PROTECTED (decl))
|
||
access_flags |= ACC_PROTECTED;
|
||
if (CLASS_STRICTFP (decl))
|
||
access_flags |= ACC_STRICT;
|
||
if (CLASS_ENUM (decl))
|
||
access_flags |= ACC_ENUM;
|
||
if (CLASS_SYNTHETIC (decl))
|
||
access_flags |= ACC_SYNTHETIC;
|
||
if (CLASS_ANNOTATION (decl))
|
||
access_flags |= ACC_ANNOTATION;
|
||
return access_flags;
|
||
}
|
||
if (TREE_CODE (decl) == FUNCTION_DECL)
|
||
{
|
||
if (METHOD_PUBLIC (decl))
|
||
access_flags |= ACC_PUBLIC;
|
||
if (METHOD_PRIVATE (decl))
|
||
access_flags |= ACC_PRIVATE;
|
||
if (METHOD_PROTECTED (decl))
|
||
access_flags |= ACC_PROTECTED;
|
||
if (METHOD_STATIC (decl))
|
||
access_flags |= ACC_STATIC;
|
||
if (METHOD_FINAL (decl))
|
||
access_flags |= ACC_FINAL;
|
||
if (METHOD_SYNCHRONIZED (decl))
|
||
access_flags |= ACC_SYNCHRONIZED;
|
||
if (METHOD_NATIVE (decl))
|
||
access_flags |= ACC_NATIVE;
|
||
if (METHOD_ABSTRACT (decl))
|
||
access_flags |= ACC_ABSTRACT;
|
||
if (METHOD_STRICTFP (decl))
|
||
access_flags |= ACC_STRICT;
|
||
if (METHOD_INVISIBLE (decl))
|
||
access_flags |= ACC_INVISIBLE;
|
||
if (DECL_ARTIFICIAL (decl))
|
||
access_flags |= ACC_SYNTHETIC;
|
||
if (METHOD_BRIDGE (decl))
|
||
access_flags |= ACC_BRIDGE;
|
||
if (METHOD_VARARGS (decl))
|
||
access_flags |= ACC_VARARGS;
|
||
return access_flags;
|
||
}
|
||
gcc_unreachable ();
|
||
}
|
||
|
||
static GTY (()) int alias_labelno = 0;
|
||
|
||
/* Create a private alias for METHOD. Using this alias instead of the method
|
||
decl ensures that ncode entries in the method table point to the real function
|
||
at runtime, not a PLT entry. */
|
||
|
||
static tree
|
||
make_local_function_alias (tree method)
|
||
{
|
||
#ifdef ASM_OUTPUT_DEF
|
||
tree alias;
|
||
|
||
const char *method_name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (method));
|
||
char *name = alloca (strlen (method_name) + 2);
|
||
char *buf = alloca (strlen (method_name) + 128);
|
||
|
||
/* Only create aliases for local functions. */
|
||
if (DECL_EXTERNAL (method))
|
||
return method;
|
||
|
||
/* Prefix method_name with 'L' for the alias label. */
|
||
*name = 'L';
|
||
strcpy (name + 1, method_name);
|
||
|
||
ASM_GENERATE_INTERNAL_LABEL (buf, name, alias_labelno++);
|
||
alias = build_decl (FUNCTION_DECL, get_identifier (buf),
|
||
TREE_TYPE (method));
|
||
DECL_CONTEXT (alias) = NULL;
|
||
TREE_READONLY (alias) = TREE_READONLY (method);
|
||
TREE_THIS_VOLATILE (alias) = TREE_THIS_VOLATILE (method);
|
||
TREE_PUBLIC (alias) = 0;
|
||
DECL_EXTERNAL (alias) = 0;
|
||
DECL_ARTIFICIAL (alias) = 1;
|
||
DECL_INLINE (alias) = 0;
|
||
DECL_INITIAL (alias) = error_mark_node;
|
||
TREE_ADDRESSABLE (alias) = 1;
|
||
TREE_USED (alias) = 1;
|
||
TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (alias)) = 1;
|
||
if (!flag_syntax_only)
|
||
assemble_alias (alias, DECL_ASSEMBLER_NAME (method));
|
||
return alias;
|
||
#else
|
||
return method;
|
||
#endif
|
||
}
|
||
|
||
/** Make reflection data (_Jv_Field) for field FDECL. */
|
||
|
||
static tree
|
||
make_field_value (tree fdecl)
|
||
{
|
||
tree finit;
|
||
int flags;
|
||
tree type = TREE_TYPE (fdecl);
|
||
int resolved = is_compiled_class (type) && ! flag_indirect_dispatch;
|
||
|
||
START_RECORD_CONSTRUCTOR (finit, field_type_node);
|
||
PUSH_FIELD_VALUE (finit, "name", build_utf8_ref (DECL_NAME (fdecl)));
|
||
if (resolved)
|
||
type = build_class_ref (type);
|
||
else
|
||
{
|
||
tree signature = build_java_signature (type);
|
||
|
||
type = build_utf8_ref (unmangle_classname
|
||
(IDENTIFIER_POINTER (signature),
|
||
IDENTIFIER_LENGTH (signature)));
|
||
}
|
||
PUSH_FIELD_VALUE (finit, "type", type);
|
||
|
||
flags = get_access_flags_from_decl (fdecl);
|
||
if (! resolved)
|
||
flags |= 0x8000 /* FIELD_UNRESOLVED_FLAG */;
|
||
|
||
PUSH_FIELD_VALUE (finit, "accflags", build_int_cst (NULL_TREE, flags));
|
||
PUSH_FIELD_VALUE (finit, "bsize", TYPE_SIZE_UNIT (TREE_TYPE (fdecl)));
|
||
|
||
{
|
||
tree field_address = integer_zero_node;
|
||
if ((DECL_INITIAL (fdecl) || ! flag_indirect_classes)
|
||
&& FIELD_STATIC (fdecl))
|
||
field_address = build_address_of (fdecl);
|
||
|
||
PUSH_FIELD_VALUE
|
||
(finit, "info",
|
||
build_constructor_from_list (field_info_union_node,
|
||
build_tree_list
|
||
((FIELD_STATIC (fdecl)
|
||
? TREE_CHAIN (TYPE_FIELDS (field_info_union_node))
|
||
: TYPE_FIELDS (field_info_union_node)),
|
||
(FIELD_STATIC (fdecl)
|
||
? field_address
|
||
: byte_position (fdecl)))));
|
||
}
|
||
|
||
FINISH_RECORD_CONSTRUCTOR (finit);
|
||
return finit;
|
||
}
|
||
|
||
/** Make reflection data (_Jv_Method) for method MDECL. */
|
||
|
||
static tree
|
||
make_method_value (tree mdecl)
|
||
{
|
||
static int method_name_count = 0;
|
||
tree minit;
|
||
tree index;
|
||
tree code;
|
||
tree class_decl;
|
||
#define ACC_TRANSLATED 0x4000
|
||
int accflags = get_access_flags_from_decl (mdecl) | ACC_TRANSLATED;
|
||
|
||
class_decl = DECL_CONTEXT (mdecl);
|
||
/* For interfaces, the index field contains the dispatch index. */
|
||
if (CLASS_INTERFACE (TYPE_NAME (class_decl)))
|
||
index = build_int_cst (NULL_TREE,
|
||
get_interface_method_index (mdecl, class_decl));
|
||
else if (!flag_indirect_dispatch && get_method_index (mdecl) != NULL_TREE)
|
||
index = get_method_index (mdecl);
|
||
else
|
||
index = integer_minus_one_node;
|
||
|
||
code = null_pointer_node;
|
||
if (METHOD_ABSTRACT (mdecl))
|
||
code = build1 (ADDR_EXPR, nativecode_ptr_type_node,
|
||
soft_abstractmethod_node);
|
||
else
|
||
code = build1 (ADDR_EXPR, nativecode_ptr_type_node,
|
||
make_local_function_alias (mdecl));
|
||
START_RECORD_CONSTRUCTOR (minit, method_type_node);
|
||
PUSH_FIELD_VALUE (minit, "name",
|
||
build_utf8_ref (DECL_CONSTRUCTOR_P (mdecl) ?
|
||
init_identifier_node
|
||
: DECL_NAME (mdecl)));
|
||
{
|
||
tree signature = build_java_signature (TREE_TYPE (mdecl));
|
||
PUSH_FIELD_VALUE (minit, "signature",
|
||
(build_utf8_ref
|
||
(unmangle_classname
|
||
(IDENTIFIER_POINTER(signature),
|
||
IDENTIFIER_LENGTH(signature)))));
|
||
}
|
||
PUSH_FIELD_VALUE (minit, "accflags", build_int_cst (NULL_TREE, accflags));
|
||
PUSH_FIELD_VALUE (minit, "index", index);
|
||
PUSH_FIELD_VALUE (minit, "ncode", code);
|
||
|
||
{
|
||
/* Compute the `throws' information for the method. */
|
||
tree table = null_pointer_node;
|
||
if (DECL_FUNCTION_THROWS (mdecl) != NULL_TREE)
|
||
{
|
||
int length = 1 + list_length (DECL_FUNCTION_THROWS (mdecl));
|
||
tree iter, type, array;
|
||
char buf[60];
|
||
|
||
table = tree_cons (NULL_TREE, table, NULL_TREE);
|
||
for (iter = DECL_FUNCTION_THROWS (mdecl);
|
||
iter != NULL_TREE;
|
||
iter = TREE_CHAIN (iter))
|
||
{
|
||
tree sig = DECL_NAME (TYPE_NAME (TREE_VALUE (iter)));
|
||
tree utf8
|
||
= build_utf8_ref (unmangle_classname (IDENTIFIER_POINTER (sig),
|
||
IDENTIFIER_LENGTH (sig)));
|
||
table = tree_cons (NULL_TREE, utf8, table);
|
||
}
|
||
type = build_prim_array_type (ptr_type_node, length);
|
||
table = build_constructor_from_list (type, table);
|
||
/* Compute something unique enough. */
|
||
sprintf (buf, "_methods%d", method_name_count++);
|
||
array = build_decl (VAR_DECL, get_identifier (buf), type);
|
||
DECL_INITIAL (array) = table;
|
||
TREE_STATIC (array) = 1;
|
||
DECL_ARTIFICIAL (array) = 1;
|
||
DECL_IGNORED_P (array) = 1;
|
||
rest_of_decl_compilation (array, 1, 0);
|
||
|
||
table = build1 (ADDR_EXPR, ptr_type_node, array);
|
||
}
|
||
|
||
PUSH_FIELD_VALUE (minit, "throws", table);
|
||
}
|
||
|
||
FINISH_RECORD_CONSTRUCTOR (minit);
|
||
return minit;
|
||
}
|
||
|
||
static tree
|
||
get_dispatch_vector (tree type)
|
||
{
|
||
tree vtable = TYPE_VTABLE (type);
|
||
|
||
if (vtable == NULL_TREE)
|
||
{
|
||
HOST_WIDE_INT i;
|
||
tree method;
|
||
tree super = CLASSTYPE_SUPER (type);
|
||
HOST_WIDE_INT nvirtuals = tree_low_cst (TYPE_NVIRTUALS (type), 0);
|
||
vtable = make_tree_vec (nvirtuals);
|
||
TYPE_VTABLE (type) = vtable;
|
||
if (super != NULL_TREE)
|
||
{
|
||
tree super_vtable = get_dispatch_vector (super);
|
||
|
||
for (i = tree_low_cst (TYPE_NVIRTUALS (super), 0); --i >= 0; )
|
||
TREE_VEC_ELT (vtable, i) = TREE_VEC_ELT (super_vtable, i);
|
||
}
|
||
|
||
for (method = TYPE_METHODS (type); method != NULL_TREE;
|
||
method = TREE_CHAIN (method))
|
||
{
|
||
tree method_index = get_method_index (method);
|
||
if (method_index != NULL_TREE
|
||
&& host_integerp (method_index, 0))
|
||
TREE_VEC_ELT (vtable, tree_low_cst (method_index, 0)) = method;
|
||
}
|
||
}
|
||
|
||
return vtable;
|
||
}
|
||
|
||
static tree
|
||
get_dispatch_table (tree type, tree this_class_addr)
|
||
{
|
||
int abstract_p = CLASS_ABSTRACT (TYPE_NAME (type));
|
||
tree vtable = get_dispatch_vector (type);
|
||
int i, j;
|
||
tree list = NULL_TREE;
|
||
int nvirtuals = TREE_VEC_LENGTH (vtable);
|
||
int arraysize;
|
||
tree gc_descr;
|
||
|
||
for (i = nvirtuals; --i >= 0; )
|
||
{
|
||
tree method = TREE_VEC_ELT (vtable, i);
|
||
if (METHOD_ABSTRACT (method))
|
||
{
|
||
if (! abstract_p)
|
||
warning (0, "%Jabstract method in non-abstract class", method);
|
||
|
||
if (TARGET_VTABLE_USES_DESCRIPTORS)
|
||
for (j = 0; j < TARGET_VTABLE_USES_DESCRIPTORS; ++j)
|
||
list = tree_cons (NULL_TREE, null_pointer_node, list);
|
||
else
|
||
list = tree_cons (NULL_TREE, null_pointer_node, list);
|
||
}
|
||
else
|
||
{
|
||
if (TARGET_VTABLE_USES_DESCRIPTORS)
|
||
for (j = 0; j < TARGET_VTABLE_USES_DESCRIPTORS; ++j)
|
||
{
|
||
tree fdesc = build2 (FDESC_EXPR, nativecode_ptr_type_node,
|
||
method, build_int_cst (NULL_TREE, j));
|
||
TREE_CONSTANT (fdesc) = 1;
|
||
TREE_INVARIANT (fdesc) = 1;
|
||
list = tree_cons (NULL_TREE, fdesc, list);
|
||
}
|
||
else
|
||
list = tree_cons (NULL_TREE,
|
||
build1 (ADDR_EXPR, nativecode_ptr_type_node,
|
||
method),
|
||
list);
|
||
}
|
||
}
|
||
|
||
/* Dummy entry for compatibility with G++ -fvtable-thunks. When
|
||
using the Boehm GC we sometimes stash a GC type descriptor
|
||
there. We set the PURPOSE to NULL_TREE not to interfere (reset)
|
||
the emitted byte count during the output to the assembly file. */
|
||
/* With TARGET_VTABLE_USES_DESCRIPTORS, we only add one extra
|
||
fake "function descriptor". It's first word is the is the class
|
||
pointer, and subsequent words (usually one) contain the GC descriptor.
|
||
In all other cases, we reserve two extra vtable slots. */
|
||
gc_descr = get_boehm_type_descriptor (type);
|
||
list = tree_cons (NULL_TREE, gc_descr, list);
|
||
for (j = 1; j < TARGET_VTABLE_USES_DESCRIPTORS-1; ++j)
|
||
list = tree_cons (NULL_TREE, gc_descr, list);
|
||
list = tree_cons (NULL_TREE, this_class_addr, list);
|
||
|
||
/** Pointer to type_info object (to be implemented), according to g++ ABI. */
|
||
list = tree_cons (NULL_TREE, null_pointer_node, list);
|
||
/** Offset to start of whole object. Always (ptrdiff_t)0 for Java. */
|
||
list = tree_cons (integer_zero_node, null_pointer_node, list);
|
||
|
||
arraysize = (TARGET_VTABLE_USES_DESCRIPTORS? nvirtuals + 1 : nvirtuals + 2);
|
||
if (TARGET_VTABLE_USES_DESCRIPTORS)
|
||
arraysize *= TARGET_VTABLE_USES_DESCRIPTORS;
|
||
arraysize += 2;
|
||
return build_constructor_from_list
|
||
(build_prim_array_type (nativecode_ptr_type_node,
|
||
arraysize), list);
|
||
}
|
||
|
||
|
||
/* Set the method_index for a method decl. */
|
||
void
|
||
set_method_index (tree decl, tree method_index)
|
||
{
|
||
if (method_index != NULL_TREE)
|
||
{
|
||
/* method_index is null if we're using indirect dispatch. */
|
||
method_index = fold (convert (sizetype, method_index));
|
||
|
||
if (TARGET_VTABLE_USES_DESCRIPTORS)
|
||
/* Add one to skip bogus descriptor for class and GC descriptor. */
|
||
method_index = size_binop (PLUS_EXPR, method_index, size_int (1));
|
||
else
|
||
/* Add 1 to skip "class" field of dtable, and 1 to skip GC
|
||
descriptor. */
|
||
method_index = size_binop (PLUS_EXPR, method_index, size_int (2));
|
||
}
|
||
|
||
DECL_VINDEX (decl) = method_index;
|
||
}
|
||
|
||
/* Get the method_index for a method decl. */
|
||
tree
|
||
get_method_index (tree decl)
|
||
{
|
||
tree method_index = DECL_VINDEX (decl);
|
||
|
||
if (! method_index)
|
||
return NULL;
|
||
|
||
if (TARGET_VTABLE_USES_DESCRIPTORS)
|
||
/* Sub one to skip bogus descriptor for class and GC descriptor. */
|
||
method_index = size_binop (MINUS_EXPR, method_index, size_int (1));
|
||
else
|
||
/* Sub 1 to skip "class" field of dtable, and 1 to skip GC descriptor. */
|
||
method_index = size_binop (MINUS_EXPR, method_index, size_int (2));
|
||
|
||
return method_index;
|
||
}
|
||
|
||
static int
|
||
supers_all_compiled (tree type)
|
||
{
|
||
while (type != NULL_TREE)
|
||
{
|
||
if (!assume_compiled (IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)))))
|
||
return 0;
|
||
type = CLASSTYPE_SUPER (type);
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
void
|
||
make_class_data (tree type)
|
||
{
|
||
tree decl, cons, temp;
|
||
tree field, fields_decl;
|
||
tree static_fields = NULL_TREE;
|
||
tree instance_fields = NULL_TREE;
|
||
HOST_WIDE_INT static_field_count = 0;
|
||
HOST_WIDE_INT instance_field_count = 0;
|
||
HOST_WIDE_INT field_count;
|
||
tree field_array_type;
|
||
tree method;
|
||
tree methods = NULL_TREE;
|
||
tree dtable_decl = NULL_TREE;
|
||
HOST_WIDE_INT method_count = 0;
|
||
tree method_array_type;
|
||
tree methods_decl;
|
||
tree super;
|
||
tree this_class_addr;
|
||
tree constant_pool_constructor;
|
||
tree interfaces = null_pointer_node;
|
||
int interface_len = 0;
|
||
int uses_jv_markobj = 0;
|
||
tree type_decl = TYPE_NAME (type);
|
||
tree id_main = get_identifier("main");
|
||
tree id_class = get_identifier("java.lang.Class");
|
||
/** Offset from start of virtual function table declaration
|
||
to where objects actually point at, following new g++ ABI. */
|
||
tree dtable_start_offset = size_int (2 * POINTER_SIZE / BITS_PER_UNIT);
|
||
VEC(int, heap) *field_indexes;
|
||
tree first_real_field;
|
||
|
||
this_class_addr = build_static_class_ref (type);
|
||
decl = TREE_OPERAND (this_class_addr, 0);
|
||
|
||
if (supers_all_compiled (type) && ! CLASS_INTERFACE (type_decl)
|
||
&& !flag_indirect_dispatch)
|
||
{
|
||
tree dtable = get_dispatch_table (type, this_class_addr);
|
||
uses_jv_markobj = uses_jv_markobj_p (dtable);
|
||
if (type == class_type_node && class_dtable_decl != NULL_TREE)
|
||
{
|
||
/* We've already created some other class, and consequently
|
||
we made class_dtable_decl. Now we just want to fill it
|
||
in. */
|
||
dtable_decl = class_dtable_decl;
|
||
}
|
||
else
|
||
{
|
||
dtable_decl = build_dtable_decl (type);
|
||
TREE_STATIC (dtable_decl) = 1;
|
||
DECL_ARTIFICIAL (dtable_decl) = 1;
|
||
DECL_IGNORED_P (dtable_decl) = 1;
|
||
}
|
||
|
||
TREE_PUBLIC (dtable_decl) = 1;
|
||
DECL_INITIAL (dtable_decl) = dtable;
|
||
/* The only dispatch table exported from a DSO is the dispatch
|
||
table for java.lang.Class. */
|
||
if (DECL_NAME (type_decl) != id_class)
|
||
java_hide_decl (dtable_decl);
|
||
if (! flag_indirect_classes)
|
||
rest_of_decl_compilation (dtable_decl, 1, 0);
|
||
/* Maybe we're compiling Class as the first class. If so, set
|
||
class_dtable_decl to the decl we just made. */
|
||
if (type == class_type_node && class_dtable_decl == NULL_TREE)
|
||
class_dtable_decl = dtable_decl;
|
||
}
|
||
|
||
/* Build Field array. */
|
||
field = TYPE_FIELDS (type);
|
||
while (field && DECL_ARTIFICIAL (field))
|
||
field = TREE_CHAIN (field); /* Skip dummy fields. */
|
||
if (field && DECL_NAME (field) == NULL_TREE)
|
||
field = TREE_CHAIN (field); /* Skip dummy field for inherited data. */
|
||
first_real_field = field;
|
||
|
||
/* First count static and instance fields. */
|
||
for ( ; field != NULL_TREE; field = TREE_CHAIN (field))
|
||
{
|
||
if (! DECL_ARTIFICIAL (field))
|
||
{
|
||
if (FIELD_STATIC (field))
|
||
static_field_count++;
|
||
else if (uses_jv_markobj || !flag_reduced_reflection)
|
||
instance_field_count++;
|
||
}
|
||
}
|
||
field_count = static_field_count + instance_field_count;
|
||
field_indexes = VEC_alloc (int, heap, field_count);
|
||
|
||
/* gcj sorts fields so that static fields come first, followed by
|
||
instance fields. Unfortunately, by the time this takes place we
|
||
have already generated the reflection_data for this class, and
|
||
that data contains indexes into the fields. So, we generate a
|
||
permutation that maps each original field index to its final
|
||
position. Then we pass this permutation to
|
||
rewrite_reflection_indexes(), which fixes up the reflection
|
||
data. */
|
||
{
|
||
int i;
|
||
int static_count = 0;
|
||
int instance_count = static_field_count;
|
||
int field_index;
|
||
|
||
for (i = 0, field = first_real_field;
|
||
field != NULL_TREE;
|
||
field = TREE_CHAIN (field), i++)
|
||
{
|
||
if (! DECL_ARTIFICIAL (field))
|
||
{
|
||
field_index = 0;
|
||
if (FIELD_STATIC (field))
|
||
field_index = static_count++;
|
||
else if (uses_jv_markobj || !flag_reduced_reflection)
|
||
field_index = instance_count++;
|
||
VEC_quick_push (int, field_indexes, field_index);
|
||
}
|
||
}
|
||
}
|
||
|
||
for (field = first_real_field; field != NULL_TREE;
|
||
field = TREE_CHAIN (field))
|
||
{
|
||
if (! DECL_ARTIFICIAL (field))
|
||
{
|
||
if (FIELD_STATIC (field))
|
||
{
|
||
/* We must always create reflection data for static fields
|
||
as it is used in the creation of the field itself. */
|
||
tree init = make_field_value (field);
|
||
tree initial = DECL_INITIAL (field);
|
||
static_fields = tree_cons (NULL_TREE, init, static_fields);
|
||
/* If the initial value is a string constant,
|
||
prevent output_constant from trying to assemble the value. */
|
||
if (initial != NULL_TREE
|
||
&& TREE_TYPE (initial) == string_ptr_type_node)
|
||
DECL_INITIAL (field) = NULL_TREE;
|
||
rest_of_decl_compilation (field, 1, 1);
|
||
DECL_INITIAL (field) = initial;
|
||
}
|
||
else if (uses_jv_markobj || !flag_reduced_reflection)
|
||
{
|
||
tree init = make_field_value (field);
|
||
instance_fields = tree_cons (NULL_TREE, init, instance_fields);
|
||
}
|
||
}
|
||
}
|
||
|
||
if (field_count > 0)
|
||
{
|
||
static_fields = nreverse (static_fields);
|
||
instance_fields = nreverse (instance_fields);
|
||
static_fields = chainon (static_fields, instance_fields);
|
||
field_array_type = build_prim_array_type (field_type_node, field_count);
|
||
fields_decl = build_decl (VAR_DECL, mangled_classname ("_FL_", type),
|
||
field_array_type);
|
||
DECL_INITIAL (fields_decl) = build_constructor_from_list
|
||
(field_array_type, static_fields);
|
||
TREE_STATIC (fields_decl) = 1;
|
||
DECL_ARTIFICIAL (fields_decl) = 1;
|
||
DECL_IGNORED_P (fields_decl) = 1;
|
||
rest_of_decl_compilation (fields_decl, 1, 0);
|
||
}
|
||
else
|
||
fields_decl = NULL_TREE;
|
||
|
||
/* Build Method array. */
|
||
for (method = TYPE_METHODS (type);
|
||
method != NULL_TREE; method = TREE_CHAIN (method))
|
||
{
|
||
tree init;
|
||
if (METHOD_PRIVATE (method)
|
||
&& ! flag_keep_inline_functions
|
||
&& optimize)
|
||
continue;
|
||
/* Even if we have a decl, we don't necessarily have the code.
|
||
This can happen if we inherit a method from a superclass for
|
||
which we don't have a .class file. */
|
||
if (METHOD_DUMMY (method))
|
||
continue;
|
||
|
||
/* Generate method reflection data if:
|
||
|
||
- !flag_reduced_reflection.
|
||
|
||
- <clinit> -- The runtime uses reflection to initialize the
|
||
class.
|
||
|
||
- Any method in class java.lang.Class -- Class.forName() and
|
||
perhaps other things require it.
|
||
|
||
- class$ -- It does not work if reflection data missing.
|
||
|
||
- main -- Reflection is used to find main(String[]) methods.
|
||
|
||
- public not static -- It is potentially part of an
|
||
interface. The runtime uses reflection data to build
|
||
interface dispatch tables. */
|
||
if (!flag_reduced_reflection
|
||
|| DECL_CLINIT_P (method)
|
||
|| DECL_NAME (type_decl) == id_class
|
||
|| DECL_NAME (method) == id_main
|
||
|| (METHOD_PUBLIC (method) && !METHOD_STATIC (method)))
|
||
{
|
||
init = make_method_value (method);
|
||
method_count++;
|
||
methods = tree_cons (NULL_TREE, init, methods);
|
||
}
|
||
}
|
||
method_array_type = build_prim_array_type (method_type_node, method_count);
|
||
methods_decl = build_decl (VAR_DECL, mangled_classname ("_MT_", type),
|
||
method_array_type);
|
||
DECL_INITIAL (methods_decl) = build_constructor_from_list
|
||
(method_array_type, nreverse (methods));
|
||
TREE_STATIC (methods_decl) = 1;
|
||
DECL_ARTIFICIAL (methods_decl) = 1;
|
||
DECL_IGNORED_P (methods_decl) = 1;
|
||
rest_of_decl_compilation (methods_decl, 1, 0);
|
||
|
||
if (class_dtable_decl == NULL_TREE)
|
||
{
|
||
class_dtable_decl = build_dtable_decl (class_type_node);
|
||
TREE_STATIC (class_dtable_decl) = 1;
|
||
DECL_ARTIFICIAL (class_dtable_decl) = 1;
|
||
DECL_IGNORED_P (class_dtable_decl) = 1;
|
||
if (is_compiled_class (class_type_node) != 2)
|
||
{
|
||
DECL_EXTERNAL (class_dtable_decl) = 1;
|
||
rest_of_decl_compilation (class_dtable_decl, 1, 0);
|
||
}
|
||
}
|
||
|
||
super = CLASSTYPE_SUPER (type);
|
||
if (super == NULL_TREE)
|
||
super = null_pointer_node;
|
||
else if (! flag_indirect_dispatch
|
||
&& assume_compiled (IDENTIFIER_POINTER (DECL_NAME (type_decl)))
|
||
&& assume_compiled (IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (super)))))
|
||
super = build_class_ref (super);
|
||
else
|
||
{
|
||
int super_index = alloc_class_constant (super);
|
||
super = build_int_cst (ptr_type_node, super_index);
|
||
}
|
||
|
||
/* Build and emit the array of implemented interfaces. */
|
||
if (type != object_type_node)
|
||
interface_len = BINFO_N_BASE_BINFOS (TYPE_BINFO (type)) - 1;
|
||
|
||
if (interface_len > 0)
|
||
{
|
||
tree init = NULL_TREE;
|
||
int i;
|
||
tree interface_array_type, idecl;
|
||
interface_array_type
|
||
= build_prim_array_type (class_ptr_type, interface_len);
|
||
idecl = build_decl (VAR_DECL, mangled_classname ("_IF_", type),
|
||
interface_array_type);
|
||
|
||
for (i = interface_len; i > 0; i--)
|
||
{
|
||
tree child = BINFO_BASE_BINFO (TYPE_BINFO (type), i);
|
||
tree iclass = BINFO_TYPE (child);
|
||
tree index;
|
||
if (! flag_indirect_dispatch
|
||
&& (assume_compiled
|
||
(IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (iclass))))))
|
||
index = build_class_ref (iclass);
|
||
else
|
||
{
|
||
int int_index = alloc_class_constant (iclass);
|
||
index = build_int_cst (ptr_type_node, int_index);
|
||
}
|
||
init = tree_cons (NULL_TREE, index, init);
|
||
}
|
||
DECL_INITIAL (idecl) = build_constructor_from_list (interface_array_type,
|
||
init);
|
||
TREE_STATIC (idecl) = 1;
|
||
DECL_ARTIFICIAL (idecl) = 1;
|
||
DECL_IGNORED_P (idecl) = 1;
|
||
interfaces = build1 (ADDR_EXPR, ptr_type_node, idecl);
|
||
rest_of_decl_compilation (idecl, 1, 0);
|
||
}
|
||
|
||
constant_pool_constructor = build_constants_constructor ();
|
||
|
||
if (flag_indirect_dispatch)
|
||
{
|
||
TYPE_OTABLE_DECL (type)
|
||
= emit_symbol_table
|
||
(DECL_NAME (TYPE_OTABLE_DECL (type)),
|
||
TYPE_OTABLE_DECL (type), TYPE_OTABLE_METHODS (type),
|
||
TYPE_OTABLE_SYMS_DECL (type), integer_type_node, 1);
|
||
|
||
TYPE_ATABLE_DECL (type)
|
||
= emit_symbol_table
|
||
(DECL_NAME (TYPE_ATABLE_DECL (type)),
|
||
TYPE_ATABLE_DECL (type), TYPE_ATABLE_METHODS (type),
|
||
TYPE_ATABLE_SYMS_DECL (type), ptr_type_node, 1);
|
||
|
||
TYPE_ITABLE_DECL (type)
|
||
= emit_symbol_table
|
||
(DECL_NAME (TYPE_ITABLE_DECL (type)),
|
||
TYPE_ITABLE_DECL (type), TYPE_ITABLE_METHODS (type),
|
||
TYPE_ITABLE_SYMS_DECL (type), ptr_type_node, 2);
|
||
}
|
||
|
||
TYPE_CTABLE_DECL (type) = emit_catch_table (type);
|
||
|
||
START_RECORD_CONSTRUCTOR (temp, object_type_node);
|
||
PUSH_FIELD_VALUE (temp, "vtable",
|
||
(flag_indirect_classes
|
||
? null_pointer_node
|
||
: build2 (POINTER_PLUS_EXPR, dtable_ptr_type,
|
||
build1 (ADDR_EXPR, dtable_ptr_type,
|
||
class_dtable_decl),
|
||
dtable_start_offset)));
|
||
if (! flag_hash_synchronization)
|
||
PUSH_FIELD_VALUE (temp, "sync_info", null_pointer_node);
|
||
FINISH_RECORD_CONSTRUCTOR (temp);
|
||
START_RECORD_CONSTRUCTOR (cons, class_type_node);
|
||
PUSH_SUPER_VALUE (cons, temp);
|
||
PUSH_FIELD_VALUE (cons, "next_or_version", gcj_abi_version);
|
||
PUSH_FIELD_VALUE (cons, "name", build_utf8_ref (DECL_NAME (type_decl)));
|
||
PUSH_FIELD_VALUE (cons, "accflags",
|
||
build_int_cst (NULL_TREE,
|
||
get_access_flags_from_decl (type_decl)));
|
||
|
||
PUSH_FIELD_VALUE (cons, "superclass",
|
||
CLASS_INTERFACE (type_decl) ? null_pointer_node : super);
|
||
PUSH_FIELD_VALUE (cons, "constants", constant_pool_constructor);
|
||
PUSH_FIELD_VALUE (cons, "methods",
|
||
methods_decl == NULL_TREE ? null_pointer_node
|
||
: build1 (ADDR_EXPR, method_ptr_type_node, methods_decl));
|
||
PUSH_FIELD_VALUE (cons, "method_count",
|
||
build_int_cst (NULL_TREE, method_count));
|
||
|
||
if (flag_indirect_dispatch)
|
||
PUSH_FIELD_VALUE (cons, "vtable_method_count", integer_minus_one_node);
|
||
else
|
||
PUSH_FIELD_VALUE (cons, "vtable_method_count", TYPE_NVIRTUALS (type));
|
||
|
||
PUSH_FIELD_VALUE (cons, "fields",
|
||
fields_decl == NULL_TREE ? null_pointer_node
|
||
: build1 (ADDR_EXPR, field_ptr_type_node, fields_decl));
|
||
/* If we're using the binary compatibility ABI we don't know the
|
||
size until load time. */
|
||
PUSH_FIELD_VALUE (cons, "size_in_bytes",
|
||
(flag_indirect_dispatch
|
||
? integer_minus_one_node
|
||
: size_in_bytes (type)));
|
||
PUSH_FIELD_VALUE (cons, "field_count",
|
||
build_int_cst (NULL_TREE, field_count));
|
||
PUSH_FIELD_VALUE (cons, "static_field_count",
|
||
build_int_cst (NULL_TREE, static_field_count));
|
||
|
||
if (flag_indirect_dispatch)
|
||
PUSH_FIELD_VALUE (cons, "vtable", null_pointer_node);
|
||
else
|
||
PUSH_FIELD_VALUE (cons, "vtable",
|
||
dtable_decl == NULL_TREE ? null_pointer_node
|
||
: build2 (POINTER_PLUS_EXPR, dtable_ptr_type,
|
||
build1 (ADDR_EXPR, dtable_ptr_type,
|
||
dtable_decl),
|
||
dtable_start_offset));
|
||
if (TYPE_OTABLE_METHODS (type) == NULL_TREE)
|
||
{
|
||
PUSH_FIELD_VALUE (cons, "otable", null_pointer_node);
|
||
PUSH_FIELD_VALUE (cons, "otable_syms", null_pointer_node);
|
||
}
|
||
else
|
||
{
|
||
pushdecl_top_level (TYPE_OTABLE_SYMS_DECL (type));
|
||
PUSH_FIELD_VALUE (cons, "otable",
|
||
build1 (ADDR_EXPR, otable_ptr_type, TYPE_OTABLE_DECL (type)));
|
||
PUSH_FIELD_VALUE (cons, "otable_syms",
|
||
build1 (ADDR_EXPR, symbols_array_ptr_type,
|
||
TYPE_OTABLE_SYMS_DECL (type)));
|
||
TREE_CONSTANT (TYPE_OTABLE_DECL (type)) = 1;
|
||
TREE_INVARIANT (TYPE_OTABLE_DECL (type)) = 1;
|
||
}
|
||
if (TYPE_ATABLE_METHODS(type) == NULL_TREE)
|
||
{
|
||
PUSH_FIELD_VALUE (cons, "atable", null_pointer_node);
|
||
PUSH_FIELD_VALUE (cons, "atable_syms", null_pointer_node);
|
||
}
|
||
else
|
||
{
|
||
pushdecl_top_level (TYPE_ATABLE_SYMS_DECL (type));
|
||
PUSH_FIELD_VALUE (cons, "atable",
|
||
build1 (ADDR_EXPR, atable_ptr_type, TYPE_ATABLE_DECL (type)));
|
||
PUSH_FIELD_VALUE (cons, "atable_syms",
|
||
build1 (ADDR_EXPR, symbols_array_ptr_type,
|
||
TYPE_ATABLE_SYMS_DECL (type)));
|
||
TREE_CONSTANT (TYPE_ATABLE_DECL (type)) = 1;
|
||
TREE_INVARIANT (TYPE_ATABLE_DECL (type)) = 1;
|
||
}
|
||
if (TYPE_ITABLE_METHODS(type) == NULL_TREE)
|
||
{
|
||
PUSH_FIELD_VALUE (cons, "itable", null_pointer_node);
|
||
PUSH_FIELD_VALUE (cons, "itable_syms", null_pointer_node);
|
||
}
|
||
else
|
||
{
|
||
pushdecl_top_level (TYPE_ITABLE_SYMS_DECL (type));
|
||
PUSH_FIELD_VALUE (cons, "itable",
|
||
build1 (ADDR_EXPR, itable_ptr_type, TYPE_ITABLE_DECL (type)));
|
||
PUSH_FIELD_VALUE (cons, "itable_syms",
|
||
build1 (ADDR_EXPR, symbols_array_ptr_type,
|
||
TYPE_ITABLE_SYMS_DECL (type)));
|
||
TREE_CONSTANT (TYPE_ITABLE_DECL (type)) = 1;
|
||
TREE_INVARIANT (TYPE_ITABLE_DECL (type)) = 1;
|
||
}
|
||
|
||
PUSH_FIELD_VALUE (cons, "catch_classes",
|
||
build1 (ADDR_EXPR, ptr_type_node, TYPE_CTABLE_DECL (type)));
|
||
PUSH_FIELD_VALUE (cons, "interfaces", interfaces);
|
||
PUSH_FIELD_VALUE (cons, "loader", null_pointer_node);
|
||
PUSH_FIELD_VALUE (cons, "interface_count",
|
||
build_int_cst (NULL_TREE, interface_len));
|
||
PUSH_FIELD_VALUE (cons, "state",
|
||
convert (byte_type_node,
|
||
build_int_cst (NULL_TREE, JV_STATE_PRELOADING)));
|
||
|
||
PUSH_FIELD_VALUE (cons, "thread", null_pointer_node);
|
||
PUSH_FIELD_VALUE (cons, "depth", integer_zero_node);
|
||
PUSH_FIELD_VALUE (cons, "ancestors", null_pointer_node);
|
||
PUSH_FIELD_VALUE (cons, "idt", null_pointer_node);
|
||
PUSH_FIELD_VALUE (cons, "arrayclass", null_pointer_node);
|
||
PUSH_FIELD_VALUE (cons, "protectionDomain", null_pointer_node);
|
||
|
||
{
|
||
tree assertion_table_ref;
|
||
if (TYPE_ASSERTIONS (type) == NULL)
|
||
assertion_table_ref = null_pointer_node;
|
||
else
|
||
assertion_table_ref = build1 (ADDR_EXPR,
|
||
build_pointer_type (assertion_table_type),
|
||
emit_assertion_table (type));
|
||
|
||
PUSH_FIELD_VALUE (cons, "assertion_table", assertion_table_ref);
|
||
}
|
||
|
||
PUSH_FIELD_VALUE (cons, "hack_signers", null_pointer_node);
|
||
PUSH_FIELD_VALUE (cons, "chain", null_pointer_node);
|
||
PUSH_FIELD_VALUE (cons, "aux_info", null_pointer_node);
|
||
PUSH_FIELD_VALUE (cons, "engine", null_pointer_node);
|
||
|
||
if (TYPE_REFLECTION_DATA (current_class))
|
||
{
|
||
int i;
|
||
int count = TYPE_REFLECTION_DATASIZE (current_class);
|
||
VEC (constructor_elt, gc) *v
|
||
= VEC_alloc (constructor_elt, gc, count);
|
||
unsigned char *data = TYPE_REFLECTION_DATA (current_class);
|
||
tree max_index = build_int_cst (sizetype, count);
|
||
tree index = build_index_type (max_index);
|
||
tree type = build_array_type (unsigned_byte_type_node, index);
|
||
char buf[64];
|
||
tree array;
|
||
static int reflection_data_count;
|
||
|
||
sprintf (buf, "_reflection_data_%d", reflection_data_count++);
|
||
array = build_decl (VAR_DECL, get_identifier (buf), type);
|
||
|
||
rewrite_reflection_indexes (field_indexes);
|
||
|
||
for (i = 0; i < count; i++)
|
||
{
|
||
constructor_elt *elt = VEC_quick_push (constructor_elt, v, NULL);
|
||
elt->index = build_int_cst (sizetype, i);
|
||
elt->value = build_int_cstu (byte_type_node, data[i]);
|
||
}
|
||
|
||
DECL_INITIAL (array) = build_constructor (type, v);
|
||
TREE_STATIC (array) = 1;
|
||
DECL_ARTIFICIAL (array) = 1;
|
||
DECL_IGNORED_P (array) = 1;
|
||
TREE_READONLY (array) = 1;
|
||
TREE_CONSTANT (DECL_INITIAL (array)) = 1;
|
||
rest_of_decl_compilation (array, 1, 0);
|
||
|
||
PUSH_FIELD_VALUE (cons, "reflection_data", build_address_of (array));
|
||
|
||
free (data);
|
||
TYPE_REFLECTION_DATA (current_class) = NULL;
|
||
}
|
||
else
|
||
PUSH_FIELD_VALUE (cons, "reflection_data", null_pointer_node);
|
||
|
||
FINISH_RECORD_CONSTRUCTOR (cons);
|
||
|
||
DECL_INITIAL (decl) = cons;
|
||
|
||
/* Hash synchronization requires at least 64-bit alignment. */
|
||
if (flag_hash_synchronization && POINTER_SIZE < 64)
|
||
DECL_ALIGN (decl) = 64;
|
||
|
||
if (flag_indirect_classes)
|
||
{
|
||
TREE_READONLY (decl) = 1;
|
||
TREE_CONSTANT (DECL_INITIAL (decl)) = 1;
|
||
}
|
||
|
||
rest_of_decl_compilation (decl, 1, 0);
|
||
|
||
{
|
||
tree classdollar_field = build_classdollar_field (type);
|
||
if (!flag_indirect_classes)
|
||
DECL_INITIAL (classdollar_field) = build_static_class_ref (type);
|
||
rest_of_decl_compilation (classdollar_field, 1, 0);
|
||
}
|
||
|
||
TYPE_OTABLE_DECL (type) = NULL_TREE;
|
||
TYPE_ATABLE_DECL (type) = NULL_TREE;
|
||
TYPE_CTABLE_DECL (type) = NULL_TREE;
|
||
}
|
||
|
||
void
|
||
finish_class (void)
|
||
{
|
||
java_expand_catch_classes (current_class);
|
||
|
||
current_function_decl = NULL_TREE;
|
||
TYPE_DECL_SUPPRESS_DEBUG (TYPE_NAME (current_class)) = 0;
|
||
make_class_data (current_class);
|
||
register_class ();
|
||
rest_of_decl_compilation (TYPE_NAME (current_class), 1, 0);
|
||
}
|
||
|
||
/* Return 2 if CLASS is compiled by this compilation job;
|
||
return 1 if CLASS can otherwise be assumed to be compiled;
|
||
return 0 if we cannot assume that CLASS is compiled.
|
||
Returns 1 for primitive and 0 for array types. */
|
||
int
|
||
is_compiled_class (tree class)
|
||
{
|
||
int seen_in_zip;
|
||
if (TREE_CODE (class) == POINTER_TYPE)
|
||
class = TREE_TYPE (class);
|
||
if (TREE_CODE (class) != RECORD_TYPE) /* Primitive types are static. */
|
||
return 1;
|
||
if (TYPE_ARRAY_P (class))
|
||
return 0;
|
||
|
||
seen_in_zip = (TYPE_JCF (class) && JCF_SEEN_IN_ZIP (TYPE_JCF (class)));
|
||
if (CLASS_FROM_CURRENTLY_COMPILED_P (class))
|
||
{
|
||
/* The class was seen in the current ZIP file and will be
|
||
available as a compiled class in the future but may not have
|
||
been loaded already. Load it if necessary. This prevent
|
||
build_class_ref () from crashing. */
|
||
|
||
if (seen_in_zip && !CLASS_LOADED_P (class) && (class != current_class))
|
||
load_class (class, 1);
|
||
|
||
/* We return 2 for class seen in ZIP and class from files
|
||
belonging to the same compilation unit */
|
||
return 2;
|
||
}
|
||
|
||
if (assume_compiled (IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (class)))))
|
||
{
|
||
if (!CLASS_LOADED_P (class))
|
||
{
|
||
if (class != current_class)
|
||
load_class (class, 1);
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Build a VAR_DECL for the dispatch table (vtable) for class TYPE. */
|
||
|
||
tree
|
||
build_dtable_decl (tree type)
|
||
{
|
||
tree dtype, decl;
|
||
|
||
/* We need to build a new dtable type so that its size is uniquely
|
||
computed when we're dealing with the class for real and not just
|
||
faking it (like java.lang.Class during the initialization of the
|
||
compiler.) We know we're not faking a class when CURRENT_CLASS is
|
||
TYPE. */
|
||
if (current_class == type)
|
||
{
|
||
tree dummy = NULL_TREE;
|
||
int n;
|
||
|
||
dtype = make_node (RECORD_TYPE);
|
||
|
||
PUSH_FIELD (dtype, dummy, "top_offset", ptr_type_node);
|
||
PUSH_FIELD (dtype, dummy, "type_info", ptr_type_node);
|
||
|
||
PUSH_FIELD (dtype, dummy, "class", class_ptr_type);
|
||
for (n = 1; n < TARGET_VTABLE_USES_DESCRIPTORS; ++n)
|
||
{
|
||
tree tmp_field = build_decl (FIELD_DECL, NULL_TREE, ptr_type_node);
|
||
TREE_CHAIN (dummy) = tmp_field;
|
||
DECL_CONTEXT (tmp_field) = dtype;
|
||
DECL_ARTIFICIAL (tmp_field) = 1;
|
||
dummy = tmp_field;
|
||
}
|
||
|
||
PUSH_FIELD (dtype, dummy, "gc_descr", ptr_type_node);
|
||
for (n = 1; n < TARGET_VTABLE_USES_DESCRIPTORS; ++n)
|
||
{
|
||
tree tmp_field = build_decl (FIELD_DECL, NULL_TREE, ptr_type_node);
|
||
TREE_CHAIN (dummy) = tmp_field;
|
||
DECL_CONTEXT (tmp_field) = dtype;
|
||
DECL_ARTIFICIAL (tmp_field) = 1;
|
||
dummy = tmp_field;
|
||
}
|
||
|
||
n = TREE_VEC_LENGTH (get_dispatch_vector (type));
|
||
if (TARGET_VTABLE_USES_DESCRIPTORS)
|
||
n *= TARGET_VTABLE_USES_DESCRIPTORS;
|
||
|
||
PUSH_FIELD (dtype, dummy, "methods",
|
||
build_prim_array_type (nativecode_ptr_type_node, n));
|
||
layout_type (dtype);
|
||
}
|
||
else
|
||
dtype = dtable_type;
|
||
|
||
decl = build_decl (VAR_DECL, get_identifier ("vt$"), dtype);
|
||
DECL_CONTEXT (decl) = type;
|
||
MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (decl);
|
||
DECL_VTABLE_P (decl) = 1;
|
||
|
||
return decl;
|
||
}
|
||
|
||
/* Pre-pend the TYPE_FIELDS of THIS_CLASS with a dummy FIELD_DECL for the
|
||
fields inherited from SUPER_CLASS. */
|
||
|
||
void
|
||
push_super_field (tree this_class, tree super_class)
|
||
{
|
||
tree base_decl;
|
||
/* Don't insert the field if we're just re-laying the class out. */
|
||
if (TYPE_FIELDS (this_class) && !DECL_NAME (TYPE_FIELDS (this_class)))
|
||
return;
|
||
base_decl = build_decl (FIELD_DECL, NULL_TREE, super_class);
|
||
DECL_IGNORED_P (base_decl) = 1;
|
||
TREE_CHAIN (base_decl) = TYPE_FIELDS (this_class);
|
||
TYPE_FIELDS (this_class) = base_decl;
|
||
DECL_SIZE (base_decl) = TYPE_SIZE (super_class);
|
||
DECL_SIZE_UNIT (base_decl) = TYPE_SIZE_UNIT (super_class);
|
||
}
|
||
|
||
/* Handle the different manners we may have to lay out a super class. */
|
||
|
||
static tree
|
||
maybe_layout_super_class (tree super_class, tree this_class ATTRIBUTE_UNUSED)
|
||
{
|
||
if (!super_class)
|
||
return NULL_TREE;
|
||
else if (TREE_CODE (super_class) == RECORD_TYPE)
|
||
{
|
||
if (!CLASS_LOADED_P (super_class))
|
||
load_class (super_class, 1);
|
||
}
|
||
/* We might have to layout the class before its dependency on
|
||
the super class gets resolved by java_complete_class */
|
||
else if (TREE_CODE (super_class) == POINTER_TYPE)
|
||
{
|
||
if (TREE_TYPE (super_class) != NULL_TREE)
|
||
super_class = TREE_TYPE (super_class);
|
||
else
|
||
gcc_unreachable ();
|
||
}
|
||
if (!TYPE_SIZE (super_class))
|
||
safe_layout_class (super_class);
|
||
|
||
return super_class;
|
||
}
|
||
|
||
/* safe_layout_class just makes sure that we can load a class without
|
||
disrupting the current_class, input_file, input_line, etc, information
|
||
about the class processed currently. */
|
||
|
||
void
|
||
safe_layout_class (tree class)
|
||
{
|
||
tree save_current_class = current_class;
|
||
location_t save_location = input_location;
|
||
|
||
layout_class (class);
|
||
|
||
current_class = save_current_class;
|
||
input_location = save_location;
|
||
}
|
||
|
||
void
|
||
layout_class (tree this_class)
|
||
{
|
||
int i;
|
||
tree super_class = CLASSTYPE_SUPER (this_class);
|
||
|
||
class_list = tree_cons (this_class, NULL_TREE, class_list);
|
||
if (CLASS_BEING_LAIDOUT (this_class))
|
||
{
|
||
char buffer [1024];
|
||
char *report;
|
||
tree current;
|
||
|
||
sprintf (buffer, " with '%s'",
|
||
IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (this_class))));
|
||
obstack_grow (&temporary_obstack, buffer, strlen (buffer));
|
||
|
||
for (current = TREE_CHAIN (class_list); current;
|
||
current = TREE_CHAIN (current))
|
||
{
|
||
tree decl = TYPE_NAME (TREE_PURPOSE (current));
|
||
sprintf (buffer, "\n which inherits from '%s' (%s:%d)",
|
||
IDENTIFIER_POINTER (DECL_NAME (decl)),
|
||
DECL_SOURCE_FILE (decl),
|
||
DECL_SOURCE_LINE (decl));
|
||
obstack_grow (&temporary_obstack, buffer, strlen (buffer));
|
||
}
|
||
obstack_1grow (&temporary_obstack, '\0');
|
||
report = obstack_finish (&temporary_obstack);
|
||
cyclic_inheritance_report = ggc_strdup (report);
|
||
obstack_free (&temporary_obstack, report);
|
||
TYPE_SIZE (this_class) = error_mark_node;
|
||
return;
|
||
}
|
||
CLASS_BEING_LAIDOUT (this_class) = 1;
|
||
|
||
if (super_class && !CLASS_BEING_LAIDOUT (super_class))
|
||
{
|
||
tree maybe_super_class
|
||
= maybe_layout_super_class (super_class, this_class);
|
||
if (maybe_super_class == NULL
|
||
|| TREE_CODE (TYPE_SIZE (maybe_super_class)) == ERROR_MARK)
|
||
{
|
||
TYPE_SIZE (this_class) = error_mark_node;
|
||
CLASS_BEING_LAIDOUT (this_class) = 0;
|
||
class_list = TREE_CHAIN (class_list);
|
||
return;
|
||
}
|
||
if (TYPE_SIZE (this_class) == NULL_TREE)
|
||
push_super_field (this_class, maybe_super_class);
|
||
}
|
||
|
||
layout_type (this_class);
|
||
|
||
/* Also recursively load/layout any superinterfaces. */
|
||
if (TYPE_BINFO (this_class))
|
||
{
|
||
for (i = BINFO_N_BASE_BINFOS (TYPE_BINFO (this_class)) - 1; i > 0; i--)
|
||
{
|
||
tree binfo = BINFO_BASE_BINFO (TYPE_BINFO (this_class), i);
|
||
tree super_interface = BINFO_TYPE (binfo);
|
||
tree maybe_super_interface
|
||
= maybe_layout_super_class (super_interface, NULL_TREE);
|
||
if (maybe_super_interface == NULL
|
||
|| TREE_CODE (TYPE_SIZE (maybe_super_interface)) == ERROR_MARK)
|
||
{
|
||
TYPE_SIZE (this_class) = error_mark_node;
|
||
CLASS_BEING_LAIDOUT (this_class) = 0;
|
||
class_list = TREE_CHAIN (class_list);
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Convert the size back to an SI integer value. */
|
||
TYPE_SIZE_UNIT (this_class) =
|
||
fold (convert (int_type_node, TYPE_SIZE_UNIT (this_class)));
|
||
|
||
CLASS_BEING_LAIDOUT (this_class) = 0;
|
||
class_list = TREE_CHAIN (class_list);
|
||
}
|
||
|
||
static void
|
||
add_miranda_methods (tree base_class, tree search_class)
|
||
{
|
||
int i;
|
||
tree binfo, base_binfo;
|
||
|
||
if (!CLASS_PARSED_P (search_class))
|
||
load_class (search_class, 1);
|
||
|
||
for (binfo = TYPE_BINFO (search_class), i = 1;
|
||
BINFO_BASE_ITERATE (binfo, i, base_binfo); i++)
|
||
{
|
||
tree method_decl;
|
||
tree elt = BINFO_TYPE (base_binfo);
|
||
|
||
/* FIXME: This is totally bogus. We should not be handling
|
||
Miranda methods at all if we're using the BC ABI. */
|
||
if (TYPE_DUMMY (elt))
|
||
continue;
|
||
|
||
/* Ensure that interface methods are seen in declared order. */
|
||
if (!CLASS_LOADED_P (elt))
|
||
load_class (elt, 1);
|
||
layout_class_methods (elt);
|
||
|
||
/* All base classes will have been laid out at this point, so the order
|
||
will be correct. This code must match similar layout code in the
|
||
runtime. */
|
||
for (method_decl = TYPE_METHODS (elt);
|
||
method_decl; method_decl = TREE_CHAIN (method_decl))
|
||
{
|
||
tree sig, override;
|
||
|
||
/* An interface can have <clinit>. */
|
||
if (ID_CLINIT_P (DECL_NAME (method_decl)))
|
||
continue;
|
||
|
||
sig = build_java_argument_signature (TREE_TYPE (method_decl));
|
||
override = lookup_argument_method (base_class,
|
||
DECL_NAME (method_decl), sig);
|
||
if (override == NULL_TREE)
|
||
{
|
||
/* Found a Miranda method. Add it. */
|
||
tree new_method;
|
||
sig = build_java_signature (TREE_TYPE (method_decl));
|
||
new_method
|
||
= add_method (base_class,
|
||
get_access_flags_from_decl (method_decl),
|
||
DECL_NAME (method_decl), sig);
|
||
METHOD_INVISIBLE (new_method) = 1;
|
||
}
|
||
}
|
||
|
||
/* Try superinterfaces. */
|
||
add_miranda_methods (base_class, elt);
|
||
}
|
||
}
|
||
|
||
void
|
||
layout_class_methods (tree this_class)
|
||
{
|
||
tree method_decl, dtable_count;
|
||
tree super_class, type_name;
|
||
|
||
if (TYPE_NVIRTUALS (this_class))
|
||
return;
|
||
|
||
super_class = CLASSTYPE_SUPER (this_class);
|
||
|
||
if (super_class)
|
||
{
|
||
super_class = maybe_layout_super_class (super_class, this_class);
|
||
if (!TYPE_NVIRTUALS (super_class))
|
||
layout_class_methods (super_class);
|
||
dtable_count = TYPE_NVIRTUALS (super_class);
|
||
}
|
||
else
|
||
dtable_count = integer_zero_node;
|
||
|
||
type_name = TYPE_NAME (this_class);
|
||
if (!flag_indirect_dispatch
|
||
&& (CLASS_ABSTRACT (type_name) || CLASS_INTERFACE (type_name)))
|
||
{
|
||
/* An abstract class can have methods which are declared only in
|
||
an implemented interface. These are called "Miranda
|
||
methods". We make a dummy method entry for such methods
|
||
here. */
|
||
add_miranda_methods (this_class, this_class);
|
||
}
|
||
|
||
TYPE_METHODS (this_class) = nreverse (TYPE_METHODS (this_class));
|
||
|
||
for (method_decl = TYPE_METHODS (this_class);
|
||
method_decl; method_decl = TREE_CHAIN (method_decl))
|
||
dtable_count = layout_class_method (this_class, super_class,
|
||
method_decl, dtable_count);
|
||
|
||
TYPE_NVIRTUALS (this_class) = dtable_count;
|
||
}
|
||
|
||
/* Return the index of METHOD in INTERFACE. This index begins at 1
|
||
and is used as an argument for _Jv_LookupInterfaceMethodIdx(). */
|
||
int
|
||
get_interface_method_index (tree method, tree interface)
|
||
{
|
||
tree meth;
|
||
int i = 1;
|
||
|
||
for (meth = TYPE_METHODS (interface); ; meth = TREE_CHAIN (meth))
|
||
{
|
||
if (meth == method)
|
||
return i;
|
||
/* We don't want to put <clinit> into the interface table. */
|
||
if (! ID_CLINIT_P (DECL_NAME (meth)))
|
||
++i;
|
||
gcc_assert (meth != NULL_TREE);
|
||
}
|
||
}
|
||
|
||
/* Lay METHOD_DECL out, returning a possibly new value of
|
||
DTABLE_COUNT. Also mangle the method's name. */
|
||
|
||
tree
|
||
layout_class_method (tree this_class, tree super_class,
|
||
tree method_decl, tree dtable_count)
|
||
{
|
||
tree method_name = DECL_NAME (method_decl);
|
||
|
||
TREE_PUBLIC (method_decl) = 1;
|
||
|
||
if (flag_indirect_classes
|
||
|| (METHOD_PRIVATE (method_decl) && METHOD_STATIC (method_decl)
|
||
&& ! METHOD_NATIVE (method_decl)
|
||
&& ! special_method_p (method_decl)))
|
||
java_hide_decl (method_decl);
|
||
|
||
/* Considered external unless it is being compiled into this object
|
||
file, or it was already flagged as external. */
|
||
if (!DECL_EXTERNAL (method_decl))
|
||
DECL_EXTERNAL (method_decl) = ((is_compiled_class (this_class) != 2)
|
||
|| METHOD_NATIVE (method_decl));
|
||
|
||
if (ID_INIT_P (method_name))
|
||
{
|
||
const char *p = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (this_class)));
|
||
const char *ptr;
|
||
for (ptr = p; *ptr; )
|
||
{
|
||
if (*ptr++ == '.')
|
||
p = ptr;
|
||
}
|
||
DECL_CONSTRUCTOR_P (method_decl) = 1;
|
||
build_java_signature (TREE_TYPE (method_decl));
|
||
}
|
||
else if (! METHOD_STATIC (method_decl))
|
||
{
|
||
tree method_sig =
|
||
build_java_signature (TREE_TYPE (method_decl));
|
||
bool method_override = false;
|
||
tree super_method = lookup_java_method (super_class, method_name,
|
||
method_sig);
|
||
if (super_method != NULL_TREE
|
||
&& ! METHOD_DUMMY (super_method))
|
||
{
|
||
method_override = true;
|
||
if (! METHOD_PUBLIC (super_method) &&
|
||
! METHOD_PROTECTED (super_method))
|
||
{
|
||
/* Don't override private method, or default-access method in
|
||
another package. */
|
||
if (METHOD_PRIVATE (super_method) ||
|
||
! in_same_package (TYPE_NAME (this_class),
|
||
TYPE_NAME (super_class)))
|
||
method_override = false;
|
||
}
|
||
}
|
||
if (method_override)
|
||
{
|
||
tree method_index = get_method_index (super_method);
|
||
set_method_index (method_decl, method_index);
|
||
if (method_index == NULL_TREE
|
||
&& ! flag_indirect_dispatch
|
||
&& ! DECL_ARTIFICIAL (super_method))
|
||
error ("non-static method %q+D overrides static method",
|
||
method_decl);
|
||
}
|
||
else if (this_class == object_type_node
|
||
&& (METHOD_FINAL (method_decl)
|
||
|| METHOD_PRIVATE (method_decl)))
|
||
{
|
||
/* We don't generate vtable entries for final Object
|
||
methods. This is simply to save space, since every
|
||
object would otherwise have to define them. */
|
||
}
|
||
else if (! METHOD_PRIVATE (method_decl)
|
||
&& dtable_count)
|
||
{
|
||
/* We generate vtable entries for final methods because they
|
||
may one day be changed to non-final. */
|
||
set_method_index (method_decl, dtable_count);
|
||
dtable_count = fold_build2 (PLUS_EXPR, integer_type_node,
|
||
dtable_count, integer_one_node);
|
||
}
|
||
}
|
||
|
||
return dtable_count;
|
||
}
|
||
|
||
static void
|
||
register_class (void)
|
||
{
|
||
tree node;
|
||
|
||
if (!registered_class)
|
||
registered_class = VEC_alloc (tree, gc, 8);
|
||
|
||
if (flag_indirect_classes)
|
||
node = current_class;
|
||
else
|
||
node = TREE_OPERAND (build_class_ref (current_class), 0);
|
||
VEC_safe_push (tree, gc, registered_class, node);
|
||
}
|
||
|
||
/* Emit a function that calls _Jv_RegisterNewClasses with a list of
|
||
all the classes we have emitted. */
|
||
|
||
static void
|
||
emit_indirect_register_classes (tree *list_p)
|
||
{
|
||
tree klass, t, register_class_fn;
|
||
int i;
|
||
|
||
tree init = NULL_TREE;
|
||
int size = VEC_length (tree, registered_class) * 2 + 1;
|
||
tree class_array_type
|
||
= build_prim_array_type (ptr_type_node, size);
|
||
tree cdecl = build_decl (VAR_DECL, get_identifier ("_Jv_CLS"),
|
||
class_array_type);
|
||
tree reg_class_list;
|
||
for (i = 0; VEC_iterate (tree, registered_class, i, klass); ++i)
|
||
{
|
||
init = tree_cons (NULL_TREE,
|
||
fold_convert (ptr_type_node,
|
||
build_static_class_ref (klass)), init);
|
||
init = tree_cons
|
||
(NULL_TREE,
|
||
fold_convert (ptr_type_node,
|
||
build_address_of (build_classdollar_field (klass))),
|
||
init);
|
||
}
|
||
init = tree_cons (NULL_TREE, integer_zero_node, init);
|
||
DECL_INITIAL (cdecl) = build_constructor_from_list (class_array_type,
|
||
nreverse (init));
|
||
TREE_CONSTANT (DECL_INITIAL (cdecl)) = 1;
|
||
TREE_STATIC (cdecl) = 1;
|
||
DECL_ARTIFICIAL (cdecl) = 1;
|
||
DECL_IGNORED_P (cdecl) = 1;
|
||
TREE_READONLY (cdecl) = 1;
|
||
TREE_CONSTANT (cdecl) = 1;
|
||
rest_of_decl_compilation (cdecl, 1, 0);
|
||
reg_class_list = fold_convert (ptr_type_node, build_address_of (cdecl));
|
||
|
||
t = build_function_type_list (void_type_node,
|
||
build_pointer_type (ptr_type_node), NULL);
|
||
t = build_decl (FUNCTION_DECL,
|
||
get_identifier ("_Jv_RegisterNewClasses"), t);
|
||
TREE_PUBLIC (t) = 1;
|
||
DECL_EXTERNAL (t) = 1;
|
||
register_class_fn = t;
|
||
t = build_call_expr (register_class_fn, 1, reg_class_list);
|
||
append_to_statement_list (t, list_p);
|
||
}
|
||
|
||
|
||
/* Emit something to register classes at start-up time.
|
||
|
||
The preferred mechanism is through the .jcr section, which contain
|
||
a list of pointers to classes which get registered during constructor
|
||
invocation time.
|
||
|
||
The fallback mechanism is to add statements to *LIST_P to call
|
||
_Jv_RegisterClass for each class in this file. These statements will
|
||
be added to a static constructor function for this translation unit. */
|
||
|
||
void
|
||
emit_register_classes (tree *list_p)
|
||
{
|
||
if (registered_class == NULL)
|
||
return;
|
||
|
||
if (flag_indirect_classes)
|
||
{
|
||
emit_indirect_register_classes (list_p);
|
||
return;
|
||
}
|
||
|
||
/* TARGET_USE_JCR_SECTION defaults to 1 if SUPPORTS_WEAK and
|
||
TARGET_ASM_NAMED_SECTION, else 0. Some targets meet those conditions
|
||
but lack suitable crtbegin/end objects or linker support. These
|
||
targets can override the default in tm.h to use the fallback mechanism. */
|
||
if (TARGET_USE_JCR_SECTION)
|
||
{
|
||
tree klass, t;
|
||
int i;
|
||
|
||
#ifdef JCR_SECTION_NAME
|
||
switch_to_section (get_section (JCR_SECTION_NAME, SECTION_WRITE, NULL));
|
||
#else
|
||
/* A target has defined TARGET_USE_JCR_SECTION,
|
||
but doesn't have a JCR_SECTION_NAME. */
|
||
gcc_unreachable ();
|
||
#endif
|
||
assemble_align (POINTER_SIZE);
|
||
|
||
for (i = 0; VEC_iterate (tree, registered_class, i, klass); ++i)
|
||
{
|
||
t = build_fold_addr_expr (klass);
|
||
output_constant (t, POINTER_SIZE / BITS_PER_UNIT, POINTER_SIZE);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
tree klass, t, register_class_fn;
|
||
int i;
|
||
|
||
t = build_function_type_list (void_type_node, class_ptr_type, NULL);
|
||
t = build_decl (FUNCTION_DECL, get_identifier ("_Jv_RegisterClass"), t);
|
||
TREE_PUBLIC (t) = 1;
|
||
DECL_EXTERNAL (t) = 1;
|
||
register_class_fn = t;
|
||
|
||
for (i = 0; VEC_iterate (tree, registered_class, i, klass); ++i)
|
||
{
|
||
t = build_fold_addr_expr (klass);
|
||
t = build_call_expr (register_class_fn, 1, t);
|
||
append_to_statement_list (t, list_p);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Make a symbol_type (_Jv_MethodSymbol) node for DECL. */
|
||
|
||
static tree
|
||
build_symbol_entry (tree decl, tree special)
|
||
{
|
||
tree clname, name, signature, sym;
|
||
clname = build_utf8_ref (DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl))));
|
||
/* ??? Constructors are given the name foo.foo all the way through
|
||
the compiler, but in the method table they're all renamed
|
||
foo.<init>. So, we have to do the same here unless we want an
|
||
unresolved reference at runtime. */
|
||
name = build_utf8_ref ((TREE_CODE (decl) == FUNCTION_DECL
|
||
&& DECL_CONSTRUCTOR_P (decl))
|
||
? init_identifier_node
|
||
: DECL_NAME (decl));
|
||
signature = build_java_signature (TREE_TYPE (decl));
|
||
signature = build_utf8_ref (unmangle_classname
|
||
(IDENTIFIER_POINTER (signature),
|
||
IDENTIFIER_LENGTH (signature)));
|
||
/* SPECIAL is either NULL_TREE or integer_one_node. We emit
|
||
signature addr+1 if SPECIAL, and this indicates to the runtime
|
||
system that this is a "special" symbol, i.e. one that should
|
||
bypass access controls. */
|
||
if (special != NULL_TREE)
|
||
signature = build2 (POINTER_PLUS_EXPR, TREE_TYPE (signature), signature,
|
||
fold_convert (sizetype, special));
|
||
|
||
START_RECORD_CONSTRUCTOR (sym, symbol_type);
|
||
PUSH_FIELD_VALUE (sym, "clname", clname);
|
||
PUSH_FIELD_VALUE (sym, "name", name);
|
||
PUSH_FIELD_VALUE (sym, "signature", signature);
|
||
FINISH_RECORD_CONSTRUCTOR (sym);
|
||
TREE_CONSTANT (sym) = 1;
|
||
TREE_INVARIANT (sym) = 1;
|
||
|
||
return sym;
|
||
}
|
||
|
||
/* Emit a symbol table: used by -findirect-dispatch. */
|
||
|
||
tree
|
||
emit_symbol_table (tree name, tree the_table, tree decl_list,
|
||
tree the_syms_decl, tree the_array_element_type,
|
||
int element_size)
|
||
{
|
||
tree method_list, method, table, list, null_symbol;
|
||
tree table_size, the_array_type;
|
||
int index;
|
||
|
||
/* Only emit a table if this translation unit actually made any
|
||
references via it. */
|
||
if (decl_list == NULL_TREE)
|
||
return the_table;
|
||
|
||
/* Build a list of _Jv_MethodSymbols for each entry in otable_methods. */
|
||
index = 0;
|
||
method_list = decl_list;
|
||
list = NULL_TREE;
|
||
while (method_list != NULL_TREE)
|
||
{
|
||
tree special = TREE_PURPOSE (method_list);
|
||
method = TREE_VALUE (method_list);
|
||
list = tree_cons (NULL_TREE, build_symbol_entry (method, special), list);
|
||
method_list = TREE_CHAIN (method_list);
|
||
index++;
|
||
}
|
||
|
||
/* Terminate the list with a "null" entry. */
|
||
START_RECORD_CONSTRUCTOR (null_symbol, symbol_type);
|
||
PUSH_FIELD_VALUE (null_symbol, "clname", null_pointer_node);
|
||
PUSH_FIELD_VALUE (null_symbol, "name", null_pointer_node);
|
||
PUSH_FIELD_VALUE (null_symbol, "signature", null_pointer_node);
|
||
FINISH_RECORD_CONSTRUCTOR (null_symbol);
|
||
TREE_CONSTANT (null_symbol) = 1;
|
||
TREE_INVARIANT (null_symbol) = 1;
|
||
list = tree_cons (NULL_TREE, null_symbol, list);
|
||
|
||
/* Put the list in the right order and make it a constructor. */
|
||
list = nreverse (list);
|
||
table = build_constructor_from_list (symbols_array_type, list);
|
||
|
||
/* Make it the initial value for otable_syms and emit the decl. */
|
||
DECL_INITIAL (the_syms_decl) = table;
|
||
DECL_ARTIFICIAL (the_syms_decl) = 1;
|
||
DECL_IGNORED_P (the_syms_decl) = 1;
|
||
rest_of_decl_compilation (the_syms_decl, 1, 0);
|
||
|
||
/* Now that its size is known, redefine the table as an
|
||
uninitialized static array of INDEX + 1 elements. The extra entry
|
||
is used by the runtime to track whether the table has been
|
||
initialized. */
|
||
table_size
|
||
= build_index_type (build_int_cst (NULL_TREE, index * element_size + 1));
|
||
the_array_type = build_array_type (the_array_element_type, table_size);
|
||
the_table = build_decl (VAR_DECL, name, the_array_type);
|
||
TREE_STATIC (the_table) = 1;
|
||
TREE_READONLY (the_table) = 1;
|
||
rest_of_decl_compilation (the_table, 1, 0);
|
||
|
||
return the_table;
|
||
}
|
||
|
||
/* Make an entry for the catch_classes list. */
|
||
tree
|
||
make_catch_class_record (tree catch_class, tree classname)
|
||
{
|
||
tree entry;
|
||
tree type = TREE_TYPE (TREE_TYPE (TYPE_CTABLE_DECL (output_class)));
|
||
START_RECORD_CONSTRUCTOR (entry, type);
|
||
PUSH_FIELD_VALUE (entry, "address", catch_class);
|
||
PUSH_FIELD_VALUE (entry, "classname", classname);
|
||
FINISH_RECORD_CONSTRUCTOR (entry);
|
||
return entry;
|
||
}
|
||
|
||
|
||
/* Generate the list of Throwable classes that are caught by exception
|
||
handlers in this class. */
|
||
tree
|
||
emit_catch_table (tree this_class)
|
||
{
|
||
tree table, table_size, array_type;
|
||
TYPE_CATCH_CLASSES (this_class) =
|
||
tree_cons (NULL,
|
||
make_catch_class_record (null_pointer_node, null_pointer_node),
|
||
TYPE_CATCH_CLASSES (this_class));
|
||
TYPE_CATCH_CLASSES (this_class) = nreverse (TYPE_CATCH_CLASSES (this_class));
|
||
TYPE_CATCH_CLASSES (this_class) =
|
||
tree_cons (NULL,
|
||
make_catch_class_record (null_pointer_node, null_pointer_node),
|
||
TYPE_CATCH_CLASSES (this_class));
|
||
table_size = build_index_type
|
||
(build_int_cst (NULL_TREE,
|
||
list_length (TYPE_CATCH_CLASSES (this_class))));
|
||
array_type
|
||
= build_array_type (TREE_TYPE (TREE_TYPE (TYPE_CTABLE_DECL (this_class))),
|
||
table_size);
|
||
table =
|
||
build_decl (VAR_DECL, DECL_NAME (TYPE_CTABLE_DECL (this_class)), array_type);
|
||
DECL_INITIAL (table) =
|
||
build_constructor_from_list (array_type, TYPE_CATCH_CLASSES (this_class));
|
||
TREE_STATIC (table) = 1;
|
||
TREE_READONLY (table) = 1;
|
||
DECL_IGNORED_P (table) = 1;
|
||
rest_of_decl_compilation (table, 1, 0);
|
||
return table;
|
||
}
|
||
|
||
/* Given a type, return the signature used by
|
||
_Jv_FindClassFromSignature() in libgcj. This isn't exactly the
|
||
same as build_java_signature() because we want the canonical array
|
||
type. */
|
||
|
||
static tree
|
||
build_signature_for_libgcj (tree type)
|
||
{
|
||
tree sig, ref;
|
||
|
||
sig = build_java_signature (type);
|
||
ref = build_utf8_ref (unmangle_classname (IDENTIFIER_POINTER (sig),
|
||
IDENTIFIER_LENGTH (sig)));
|
||
return ref;
|
||
}
|
||
|
||
/* Add an entry to the type assertion table. Callback used during hashtable
|
||
traversal. */
|
||
|
||
static int
|
||
add_assertion_table_entry (void **htab_entry, void *ptr)
|
||
{
|
||
tree entry;
|
||
tree code_val, op1_utf8, op2_utf8;
|
||
tree *list = (tree *) ptr;
|
||
type_assertion *as = (type_assertion *) *htab_entry;
|
||
|
||
code_val = build_int_cst (NULL_TREE, as->assertion_code);
|
||
|
||
if (as->op1 == NULL_TREE)
|
||
op1_utf8 = null_pointer_node;
|
||
else
|
||
op1_utf8 = build_signature_for_libgcj (as->op1);
|
||
|
||
if (as->op2 == NULL_TREE)
|
||
op2_utf8 = null_pointer_node;
|
||
else
|
||
op2_utf8 = build_signature_for_libgcj (as->op2);
|
||
|
||
START_RECORD_CONSTRUCTOR (entry, assertion_entry_type);
|
||
PUSH_FIELD_VALUE (entry, "assertion_code", code_val);
|
||
PUSH_FIELD_VALUE (entry, "op1", op1_utf8);
|
||
PUSH_FIELD_VALUE (entry, "op2", op2_utf8);
|
||
FINISH_RECORD_CONSTRUCTOR (entry);
|
||
|
||
*list = tree_cons (NULL_TREE, entry, *list);
|
||
return true;
|
||
}
|
||
|
||
/* Generate the type assertion table for CLASS, and return its DECL. */
|
||
|
||
static tree
|
||
emit_assertion_table (tree class)
|
||
{
|
||
tree null_entry, ctor, table_decl;
|
||
tree list = NULL_TREE;
|
||
htab_t assertions_htab = TYPE_ASSERTIONS (class);
|
||
|
||
/* Iterate through the hash table. */
|
||
htab_traverse (assertions_htab, add_assertion_table_entry, &list);
|
||
|
||
/* Finish with a null entry. */
|
||
START_RECORD_CONSTRUCTOR (null_entry, assertion_entry_type);
|
||
PUSH_FIELD_VALUE (null_entry, "assertion_code", integer_zero_node);
|
||
PUSH_FIELD_VALUE (null_entry, "op1", null_pointer_node);
|
||
PUSH_FIELD_VALUE (null_entry, "op2", null_pointer_node);
|
||
FINISH_RECORD_CONSTRUCTOR (null_entry);
|
||
|
||
list = tree_cons (NULL_TREE, null_entry, list);
|
||
|
||
/* Put the list in the right order and make it a constructor. */
|
||
list = nreverse (list);
|
||
ctor = build_constructor_from_list (assertion_table_type, list);
|
||
|
||
table_decl = build_decl (VAR_DECL, mangled_classname ("_type_assert_", class),
|
||
assertion_table_type);
|
||
|
||
TREE_STATIC (table_decl) = 1;
|
||
TREE_READONLY (table_decl) = 1;
|
||
TREE_CONSTANT (table_decl) = 1;
|
||
DECL_IGNORED_P (table_decl) = 1;
|
||
|
||
DECL_INITIAL (table_decl) = ctor;
|
||
DECL_ARTIFICIAL (table_decl) = 1;
|
||
rest_of_decl_compilation (table_decl, 1, 0);
|
||
|
||
return table_decl;
|
||
}
|
||
|
||
void
|
||
init_class_processing (void)
|
||
{
|
||
fields_ident = get_identifier ("fields");
|
||
info_ident = get_identifier ("info");
|
||
|
||
gcc_obstack_init (&temporary_obstack);
|
||
}
|
||
|
||
static hashval_t java_treetreehash_hash (const void *);
|
||
static int java_treetreehash_compare (const void *, const void *);
|
||
|
||
/* A hash table mapping trees to trees. Used generally. */
|
||
|
||
#define JAVA_TREEHASHHASH_H(t) ((hashval_t)TYPE_UID (t))
|
||
|
||
static hashval_t
|
||
java_treetreehash_hash (const void *k_p)
|
||
{
|
||
const struct treetreehash_entry *const k
|
||
= (const struct treetreehash_entry *) k_p;
|
||
return JAVA_TREEHASHHASH_H (k->key);
|
||
}
|
||
|
||
static int
|
||
java_treetreehash_compare (const void * k1_p, const void * k2_p)
|
||
{
|
||
const struct treetreehash_entry *const k1
|
||
= (const struct treetreehash_entry *) k1_p;
|
||
const_tree const k2 = (const_tree) k2_p;
|
||
return (k1->key == k2);
|
||
}
|
||
|
||
tree
|
||
java_treetreehash_find (htab_t ht, tree t)
|
||
{
|
||
struct treetreehash_entry *e;
|
||
hashval_t hv = JAVA_TREEHASHHASH_H (t);
|
||
e = htab_find_with_hash (ht, t, hv);
|
||
if (e == NULL)
|
||
return NULL;
|
||
else
|
||
return e->value;
|
||
}
|
||
|
||
tree *
|
||
java_treetreehash_new (htab_t ht, tree t)
|
||
{
|
||
void **e;
|
||
struct treetreehash_entry *tthe;
|
||
hashval_t hv = JAVA_TREEHASHHASH_H (t);
|
||
|
||
e = htab_find_slot_with_hash (ht, t, hv, INSERT);
|
||
if (*e == NULL)
|
||
{
|
||
tthe = (*ht->alloc_f) (1, sizeof (*tthe));
|
||
tthe->key = t;
|
||
*e = tthe;
|
||
}
|
||
else
|
||
tthe = (struct treetreehash_entry *) *e;
|
||
return &tthe->value;
|
||
}
|
||
|
||
htab_t
|
||
java_treetreehash_create (size_t size, int gc)
|
||
{
|
||
if (gc)
|
||
return htab_create_ggc (size, java_treetreehash_hash,
|
||
java_treetreehash_compare, NULL);
|
||
else
|
||
return htab_create_alloc (size, java_treetreehash_hash,
|
||
java_treetreehash_compare, free, xcalloc, free);
|
||
}
|
||
|
||
/* Break down qualified IDENTIFIER into package and class-name components.
|
||
For example, given SOURCE "pkg.foo.Bar", LEFT will be set to
|
||
"pkg.foo", and RIGHT to "Bar". */
|
||
|
||
int
|
||
split_qualified_name (tree *left, tree *right, tree source)
|
||
{
|
||
char *p, *base;
|
||
int l = IDENTIFIER_LENGTH (source);
|
||
|
||
base = alloca (l + 1);
|
||
memcpy (base, IDENTIFIER_POINTER (source), l + 1);
|
||
|
||
/* Breakdown NAME into REMAINDER . IDENTIFIER. */
|
||
p = base + l - 1;
|
||
while (*p != '.' && p != base)
|
||
p--;
|
||
|
||
/* We didn't find a '.'. Return an error. */
|
||
if (p == base)
|
||
return 1;
|
||
|
||
*p = '\0';
|
||
if (right)
|
||
*right = get_identifier (p+1);
|
||
*left = get_identifier (base);
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Given two classes (TYPE_DECL) or class names (IDENTIFIER), return TRUE
|
||
if the classes are from the same package. */
|
||
|
||
int
|
||
in_same_package (tree name1, tree name2)
|
||
{
|
||
tree tmp;
|
||
tree pkg1;
|
||
tree pkg2;
|
||
|
||
if (TREE_CODE (name1) == TYPE_DECL)
|
||
name1 = DECL_NAME (name1);
|
||
if (TREE_CODE (name2) == TYPE_DECL)
|
||
name2 = DECL_NAME (name2);
|
||
|
||
if (QUALIFIED_P (name1) != QUALIFIED_P (name2))
|
||
/* One in empty package. */
|
||
return 0;
|
||
|
||
if (QUALIFIED_P (name1) == 0 && QUALIFIED_P (name2) == 0)
|
||
/* Both in empty package. */
|
||
return 1;
|
||
|
||
split_qualified_name (&pkg1, &tmp, name1);
|
||
split_qualified_name (&pkg2, &tmp, name2);
|
||
|
||
return (pkg1 == pkg2);
|
||
}
|
||
|
||
#include "gt-java-class.h"
|