/* Handle the constant pool of the Java(TM) Virtual Machine.
- Copyright (C) 1997, 1998, 1999, 2000, 2001, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006,
+ 2007, 2008, 2010 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>.
Java and all Java-based marks are trademarks or registered trademarks
of Sun Microsystems, Inc. in the United States and other countries.
#include "jcf.h"
#include "tree.h"
#include "java-tree.h"
+#include "diagnostic-core.h"
#include "toplev.h"
#include "ggc.h"
static void set_constant_entry (CPool *, int, int, jword);
static int find_tree_constant (CPool *, int, tree);
-static int find_class_or_string_constant (CPool *, int, tree);
static int find_name_and_type_constant (CPool *, tree, tree);
static tree get_tag_node (int);
-static tree build_constant_data_ref (void);
-static CPool *cpool_for_class (tree);
/* Set the INDEX'th constant in CPOOL to have the given TAG and VALUE. */
if (cpool->data == NULL)
{
cpool->capacity = 100;
- cpool->tags = ggc_alloc_cleared (sizeof(uint8) * cpool->capacity);
- cpool->data = ggc_alloc_cleared (sizeof(union cpool_entry)
- * cpool->capacity);
+ cpool->tags = (uint8 *) ggc_alloc_cleared_atomic (sizeof (uint8)
+ * cpool->capacity);
+ cpool->data = ggc_alloc_cleared_vec_cpool_entry (sizeof
+ (union cpool_entry),
+ cpool->capacity);
cpool->count = 1;
}
if (index >= cpool->capacity)
cpool->capacity *= 2;
if (index >= cpool->capacity)
cpool->capacity = index + 10;
- cpool->tags = ggc_realloc (cpool->tags,
- sizeof(uint8) * cpool->capacity);
- cpool->data = ggc_realloc (cpool->data,
- sizeof(union cpool_entry) * cpool->capacity);
+ cpool->tags = GGC_RESIZEVEC (uint8, cpool->tags, cpool->capacity);
+ cpool->data = GGC_RESIZEVEC (union cpool_entry, cpool->data,
+ cpool->capacity);
/* Make sure GC never sees uninitialized tag values. */
memset (cpool->tags + old_cap, 0, cpool->capacity - old_cap);
return find_tree_constant (cpool, CONSTANT_Utf8, name);
}
-static int
+int
find_class_or_string_constant (CPool *cpool, int tag, tree name)
{
jword j = find_utf8_constant (cpool, name);
}
}
- if (ptr != buffer + length)
- abort ();
+ gcc_assert (ptr == buffer + length);
}
static GTY(()) tree tag_nodes[13];
static tree
get_tag_node (int tag)
{
- /* A Cache for build_int_2 (CONSTANT_XXX, 0). */
+ /* A Cache for build_int_cst (CONSTANT_XXX, 0). */
+
+ if (tag >= 13)
+ return build_int_cst (NULL_TREE, tag);
if (tag_nodes[tag] == NULL_TREE)
- tag_nodes[tag] = build_int_2 (tag, 0);
+ tag_nodes[tag] = build_int_cst (NULL_TREE, tag);
return tag_nodes[tag];
}
/* Given a class, return its constant pool, creating one if necessary. */
-static CPool *
-cpool_for_class (tree class)
+CPool *
+cpool_for_class (tree klass)
{
- CPool *cpool = TYPE_CPOOL (class);
+ CPool *cpool = TYPE_CPOOL (klass);
if (cpool == NULL)
{
- cpool = ggc_alloc_cleared (sizeof (struct CPool));
- TYPE_CPOOL (class) = cpool;
+ cpool = ggc_alloc_cleared_CPool ();
+ TYPE_CPOOL (klass) = cpool;
}
return cpool;
}
return find_tree_constant (outgoing_cpool, tag, name);
}
+/* Create a constant pool entry for a name_and_type. This one has '.'
+ rather than '/' because it isn't going into a class file, it's
+ going into a compiled object. We don't use the '/' separator in
+ compiled objects. */
+
+static int
+find_name_and_type_constant_tree (CPool *cpool, tree name, tree type)
+{
+ int name_index = find_utf8_constant (cpool, name);
+ int type_index
+ = find_utf8_constant (cpool,
+ identifier_subst (build_java_signature (type),
+ "", '/', '.', ""));
+ return find_constant1 (cpool, CONSTANT_NameAndType,
+ (name_index << 16) | type_index);
+}
+
+/* Look for a field ref that matches DECL in the constant pool of
+ KLASS.
+ Return the index of the entry. */
+
+int
+alloc_constant_fieldref (tree klass, tree decl)
+{
+ CPool *outgoing_cpool = cpool_for_class (klass);
+ int class_index
+ = find_tree_constant (outgoing_cpool, CONSTANT_Class,
+ DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl))));
+ int name_type_index
+ = find_name_and_type_constant_tree (outgoing_cpool, DECL_NAME (decl),
+ TREE_TYPE (decl));
+ return find_constant1 (outgoing_cpool, CONSTANT_Fieldref,
+ (class_index << 16) | name_type_index);
+}
+
/* Build an identifier for the internal name of reference type TYPE. */
tree
/* Return the decl of the data array of the current constant pool. */
-static tree
-build_constant_data_ref (void)
+tree
+build_constant_data_ref (bool indirect)
{
- tree decl = TYPE_CPOOL_DATA_REF (output_class);
-
- if (decl == NULL_TREE)
+ if (indirect)
+ {
+ tree d;
+ tree cpool_type = build_array_type (ptr_type_node, NULL_TREE);
+ tree decl = build_class_ref (output_class);
+ tree klass = build1 (INDIRECT_REF, TREE_TYPE (TREE_TYPE (decl)),
+ decl);
+ tree constants = build3 (COMPONENT_REF,
+ TREE_TYPE (constants_field_decl_node), klass,
+ constants_field_decl_node,
+ NULL_TREE);
+ tree data = build3 (COMPONENT_REF,
+ TREE_TYPE (constants_data_field_decl_node),
+ constants,
+ constants_data_field_decl_node,
+ NULL_TREE);
+
+ TREE_THIS_NOTRAP (klass) = 1;
+ data = fold_convert (build_pointer_type (cpool_type), data);
+ d = build1 (INDIRECT_REF, cpool_type, data);
+
+ return d;
+ }
+ else
{
- tree type;
tree decl_name = mangled_classname ("_CD_", output_class);
+ tree decl = IDENTIFIER_GLOBAL_VALUE (decl_name);
- /* Build a type with unspecified bounds. The will make sure
- that targets do the right thing with whatever size we end
- up with at the end. Using bounds that are too small risks
- assuming the data is in the small data section. */
- type = build_array_type (ptr_type_node, NULL_TREE);
-
- /* We need to lay out the type ourselves, since build_array_type
- thinks the type is incomplete. */
- layout_type (type);
+ if (! decl)
+ {
+ /* Build a type with unspecified bounds. The will make sure
+ that targets do the right thing with whatever size we end
+ up with at the end. Using bounds that are too small risks
+ assuming the data is in the small data section. */
+ tree type = build_array_type (ptr_type_node, NULL_TREE);
+
+ /* We need to lay out the type ourselves, since build_array_type
+ thinks the type is incomplete. */
+ layout_type (type);
+
+ decl = build_decl (input_location, VAR_DECL, decl_name, type);
+ TREE_STATIC (decl) = 1;
+ IDENTIFIER_GLOBAL_VALUE (decl_name) = decl;
+ }
- decl = build_decl (VAR_DECL, decl_name, type);
- TREE_STATIC (decl) = 1;
- make_decl_rtl (decl, NULL);
- TYPE_CPOOL_DATA_REF (output_class) = decl;
+ return decl;
}
-
- return decl;
}
/* Get the pointer value at the INDEX'th element of the constant pool. */
tree
build_ref_from_constant_pool (int index)
{
- tree d = build_constant_data_ref ();
- tree i = build_int_2 (index, 0);
- return build (ARRAY_REF, TREE_TYPE (TREE_TYPE (d)), d, i,
- NULL_TREE, NULL_TREE);
+ tree i;
+ tree d = TYPE_CPOOL_DATA_REF (output_class);
+
+ if (d == NULL_TREE)
+ d = build_constant_data_ref (flag_indirect_classes);
+
+ i = build_int_cst (NULL_TREE, index);
+ d = build4 (ARRAY_REF, TREE_TYPE (TREE_TYPE (d)), d, i,
+ NULL_TREE, NULL_TREE);
+ return d;
}
/* Build an initializer for the constants field of the current constant pool.
CPool *outgoing_cpool = cpool_for_class (current_class);
tree tags_value, data_value;
tree cons;
- tree tags_list = NULL_TREE;
- tree data_list = NULL_TREE;
+ VEC(constructor_elt,gc) *v = NULL;
int i;
- for (i = outgoing_cpool->count; --i > 0; )
+ VEC(constructor_elt,gc) *tags = NULL;
+ VEC(constructor_elt,gc) *data = NULL;
+ constructor_elt *t = NULL;
+ constructor_elt *d = NULL;
+
+ if (outgoing_cpool->count > 0)
{
- tags_list
- = tree_cons (NULL_TREE, get_tag_node (outgoing_cpool->tags[i]),
- tags_list);
- data_list
- = tree_cons (NULL_TREE, build_utf8_ref (outgoing_cpool->data[i].t),
- data_list);
+ int c = outgoing_cpool->count;
+ VEC_safe_grow_cleared (constructor_elt, gc, tags, c);
+ VEC_safe_grow_cleared (constructor_elt, gc, data, c);
+ t = VEC_index (constructor_elt, tags, c-1);
+ d = VEC_index (constructor_elt, data, c-1);
}
+
+#define CONSTRUCTOR_PREPEND_VALUE(E, V) E->value = V, E--
+ for (i = outgoing_cpool->count; --i > 0; )
+ switch (outgoing_cpool->tags[i] & ~CONSTANT_LazyFlag)
+ {
+ case CONSTANT_None: /* The second half of a Double or Long on a
+ 32-bit target. */
+ case CONSTANT_Fieldref:
+ case CONSTANT_NameAndType:
+ case CONSTANT_Float:
+ case CONSTANT_Integer:
+ case CONSTANT_Double:
+ case CONSTANT_Long:
+ case CONSTANT_Methodref:
+ case CONSTANT_InterfaceMethodref:
+ {
+ unsigned HOST_WIDE_INT temp = outgoing_cpool->data[i].w;
+
+ /* Make sure that on a big-endian machine with 64-bit
+ pointers this 32-bit jint appears in the first word.
+ FIXME: This is a kludge. The field we're initializing is
+ not a scalar but a union, and that's how we should
+ represent it in the compiler. We should fix this. */
+ if (BYTES_BIG_ENDIAN)
+ temp <<= ((POINTER_SIZE > 32) ? POINTER_SIZE - 32 : 0);
+
+ CONSTRUCTOR_PREPEND_VALUE (t, get_tag_node (outgoing_cpool->tags[i]));
+ CONSTRUCTOR_PREPEND_VALUE (d,
+ fold_convert (ptr_type_node,
+ (build_int_cst (NULL_TREE,
+ temp))));
+ }
+ break;
+
+ case CONSTANT_Class:
+ case CONSTANT_String:
+ case CONSTANT_Unicode:
+ case CONSTANT_Utf8:
+ CONSTRUCTOR_PREPEND_VALUE (t, get_tag_node (outgoing_cpool->tags[i]));
+ CONSTRUCTOR_PREPEND_VALUE (d, build_utf8_ref (outgoing_cpool->data[i].t));
+ break;
+
+ default:
+ gcc_assert (false);
+ }
+#undef CONSTRUCTOR_PREPEND_VALUE
+
if (outgoing_cpool->count > 0)
{
- tree index_type;
tree data_decl, tags_decl, tags_type;
- tree max_index = build_int_2 (outgoing_cpool->count - 1, 0);
- TREE_TYPE (max_index) = sizetype;
- index_type = build_index_type (max_index);
+ tree max_index = build_int_cst (sizetype, outgoing_cpool->count - 1);
+ tree index_type = build_index_type (max_index);
+ tree tem;
/* Add dummy 0'th element of constant pool. */
- tags_list = tree_cons (NULL_TREE, get_tag_node (0), tags_list);
- data_list = tree_cons (NULL_TREE, null_pointer_node, data_list);
+ gcc_assert (t == VEC_address (constructor_elt, tags));
+ gcc_assert (d == VEC_address (constructor_elt, data));
+ t->value = get_tag_node (0);
+ d->value = null_pointer_node;
- data_decl = build_constant_data_ref ();
- TREE_TYPE (data_decl) = build_array_type (ptr_type_node, index_type),
- DECL_INITIAL (data_decl) = build_constructor (TREE_TYPE (data_decl),
- data_list);
+ /* Change the type of the decl to have the proper array size.
+ ??? Make sure to transition the old type-pointer-to list to this
+ new type to not invalidate all build address expressions. */
+ data_decl = build_constant_data_ref (false);
+ tem = TYPE_POINTER_TO (TREE_TYPE (data_decl));
+ if (!tem)
+ tem = build_pointer_type (TREE_TYPE (data_decl));
+ TYPE_POINTER_TO (TREE_TYPE (data_decl)) = NULL_TREE;
+ TREE_TYPE (data_decl) = build_array_type (ptr_type_node, index_type);
+ TYPE_POINTER_TO (TREE_TYPE (data_decl)) = tem;
+ DECL_INITIAL (data_decl) = build_constructor (TREE_TYPE (data_decl), data);
DECL_SIZE (data_decl) = TYPE_SIZE (TREE_TYPE (data_decl));
DECL_SIZE_UNIT (data_decl) = TYPE_SIZE_UNIT (TREE_TYPE (data_decl));
- rest_of_decl_compilation (data_decl, (char *) 0, 1, 0);
+ rest_of_decl_compilation (data_decl, 1, 0);
data_value = build_address_of (data_decl);
tags_type = build_array_type (unsigned_byte_type_node, index_type);
- tags_decl = build_decl (VAR_DECL, mangled_classname ("_CT_",
+ tags_decl = build_decl (input_location,
+ VAR_DECL, mangled_classname ("_CT_",
current_class),
tags_type);
TREE_STATIC (tags_decl) = 1;
- DECL_INITIAL (tags_decl) = build_constructor (tags_type, tags_list);
- rest_of_decl_compilation (tags_decl, (char*) 0, 1, 0);
+ DECL_INITIAL (tags_decl) = build_constructor (tags_type, tags);
+ rest_of_decl_compilation (tags_decl, 1, 0);
tags_value = build_address_of (tags_decl);
}
else
data_value = null_pointer_node;
tags_value = null_pointer_node;
}
- START_RECORD_CONSTRUCTOR (cons, constants_type_node);
- PUSH_FIELD_VALUE (cons, "size", build_int_2 (outgoing_cpool->count, 0));
- PUSH_FIELD_VALUE (cons, "tags", tags_value);
- PUSH_FIELD_VALUE (cons, "data", data_value);
- FINISH_RECORD_CONSTRUCTOR (cons);
+ START_RECORD_CONSTRUCTOR (v, constants_type_node);
+ PUSH_FIELD_VALUE (v, "size",
+ build_int_cst (NULL_TREE, outgoing_cpool->count));
+ PUSH_FIELD_VALUE (v, "tags", tags_value);
+ PUSH_FIELD_VALUE (v, "data", data_value);
+ FINISH_RECORD_CONSTRUCTOR (cons, v, constants_type_node);
return cons;
}
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