1 /* Process declarations and variables for the GNU compiler for the
3 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001
4 Free Software Foundation, Inc.
6 This file is part of GNU CC.
8 GNU CC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GNU CC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU CC; see the file COPYING. If not, write to
20 the Free Software Foundation, 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA.
23 Java and all Java-based marks are trademarks or registered trademarks
24 of Sun Microsystems, Inc. in the United States and other countries.
25 The Free Software Foundation is independent of Sun Microsystems, Inc. */
27 /* Hacked by Per Bothner <bothner@cygnus.com> February 1996. */
35 #include "java-tree.h"
41 #include "java-except.h"
44 #if defined (DEBUG_JAVA_BINDING_LEVELS)
45 extern void indent PROTO((void));
48 static tree push_jvm_slot PARAMS ((int, tree));
49 static tree lookup_name_current_level PARAMS ((tree));
50 static tree push_promoted_type PARAMS ((const char *, tree));
51 static struct binding_level *make_binding_level PARAMS ((void));
52 static tree create_primitive_vtable PARAMS ((const char *));
53 static tree check_local_named_variable PARAMS ((tree, tree, int, int *));
54 static tree check_local_unnamed_variable PARAMS ((tree, tree, tree));
56 /* Set to non-zero value in order to emit class initilization code
57 before static field references. */
58 extern int always_initialize_class_p;
60 /* The DECL_MAP is a mapping from (index, type) to a decl node.
61 If index < max_locals, it is the index of a local variable.
62 if index >= max_locals, then index-max_locals is a stack slot.
63 The DECL_MAP mapping is represented as a TREE_VEC whose elements
64 are a list of decls (VAR_DECL or PARM_DECL) chained by
65 DECL_LOCAL_SLOT_CHAIN; the index finds the TREE_VEC element, and then
66 we search the chain for a decl with a matching TREE_TYPE. */
70 /* A list of local variables VAR_DECLs for this method that we have seen
71 debug information, but we have not reached their starting (byte) PC yet. */
73 static tree pending_local_decls = NULL_TREE;
75 /* Push a local variable or stack slot into the decl_map,
76 and assign it an rtl. */
78 #if defined(DEBUG_JAVA_BINDING_LEVELS)
79 int binding_depth = 0;
80 int is_class_level = 0;
88 for (i = 0; i < binding_depth*2; i++)
91 #endif /* defined(DEBUG_JAVA_BINDING_LEVELS) */
94 push_jvm_slot (index, decl)
98 struct rtx_def *rtl = NULL;
99 tree type = TREE_TYPE (decl);
102 DECL_CONTEXT (decl) = current_function_decl;
103 layout_decl (decl, 0);
105 /* See if we have an appropriate rtl (i.e. same mode) at this index.
106 If so, we must use it. */
107 tmp = TREE_VEC_ELT (decl_map, index);
108 while (tmp != NULL_TREE)
110 if (TYPE_MODE (type) == TYPE_MODE (TREE_TYPE (tmp)))
111 rtl = DECL_RTL_IF_SET (tmp);
114 tmp = DECL_LOCAL_SLOT_CHAIN (tmp);
117 SET_DECL_RTL (decl, rtl);
120 if (index >= DECL_MAX_LOCALS (current_function_decl))
121 DECL_REGISTER (decl) = 1;
125 /* Now link the decl into the decl_map. */
126 if (DECL_LANG_SPECIFIC (decl) == NULL)
128 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (decl);
129 DECL_LOCAL_START_PC (decl) = 0;
130 DECL_LOCAL_END_PC (decl) = DECL_CODE_LENGTH (current_function_decl);
131 DECL_LOCAL_SLOT_NUMBER (decl) = index;
133 DECL_LOCAL_SLOT_CHAIN (decl) = TREE_VEC_ELT (decl_map, index);
134 TREE_VEC_ELT (decl_map, index) = decl;
138 /* Find out if 'decl' passed in fits the defined PC location better than
139 'best'. Return decl if it does, return best if it doesn't. If decl
140 is returned, then updated is set to true. */
143 check_local_named_variable (best, decl, pc, updated)
149 if (pc >= DECL_LOCAL_START_PC (decl)
150 && pc < DECL_LOCAL_END_PC (decl))
152 if (best == NULL_TREE
153 || (DECL_LOCAL_START_PC (decl) > DECL_LOCAL_START_PC (best)
154 && DECL_LOCAL_END_PC (decl) < DECL_LOCAL_END_PC (best)))
164 /* Find the best declaration based upon type. If 'decl' fits 'type' better
165 than 'best', return 'decl'. Otherwise return 'best'. */
168 check_local_unnamed_variable (best, decl, type)
173 if (TREE_TYPE (decl) == type
174 || (TREE_CODE (TREE_TYPE (decl)) == TREE_CODE (type)
175 && TYPE_PRECISION (TREE_TYPE (decl)) <= 32
176 && TYPE_PRECISION (type) <= 32
177 && TREE_CODE (type) != POINTER_TYPE)
178 || (TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE
179 && type == ptr_type_node))
181 if (best == NULL_TREE
182 || (TREE_TYPE (decl) == type && TREE_TYPE (best) != type))
190 /* Find a VAR_DECL (or PARM_DECL) at local index INDEX that has type TYPE,
191 that is valid at PC (or -1 if any pc).
192 If there is no existing matching decl, allocate one. */
195 find_local_variable (index, type, pc)
200 tree decl = TREE_VEC_ELT (decl_map, index);
201 tree best = NULL_TREE;
202 int found_scoped_var = 0;
204 /* Scan through every declaration that has been created in this slot. */
205 while (decl != NULL_TREE)
207 /* Variables created in give_name_to_locals() have a name and have
208 a specified scope, so we can handle them specifically. We want
209 to use the specific decls created for those so they are assigned
210 the right variables in the debugging information. */
211 if (DECL_NAME (decl) != NULL_TREE)
213 /* This is a variable we have a name for, so it has a scope
214 supplied in the class file. But it only matters when we
215 actually have a PC to use. If pc<0, then we are asking
216 for a stack slot and this decl won't be one of those. */
218 best = check_local_named_variable (best, decl, pc,
221 /* We scan for type information unless we found a variable in the
222 proper scope already. */
223 else if (!found_scoped_var)
225 /* If we don't have scoping information for a variable, we use
226 a different method to look it up. */
227 best = check_local_unnamed_variable (best, decl, type);
230 decl = DECL_LOCAL_SLOT_CHAIN (decl);
233 if (best != NULL_TREE)
236 /* If we don't find a match, create one with the type passed in. */
237 return push_jvm_slot (index, build_decl (VAR_DECL, NULL_TREE, type));
241 /* Same as find_local_index, except that INDEX is a stack index. */
244 find_stack_slot (index, type)
248 return find_local_variable (index + DECL_MAX_LOCALS (current_function_decl),
254 /* A chain of _DECL nodes for all variables, constants, functions,
255 * and typedef types. These are in the reverse of the order supplied.
259 /* For each level, a list of shadowed outer-level local definitions
260 to be restored when this level is popped.
261 Each link is a TREE_LIST whose TREE_PURPOSE is an identifier and
262 whose TREE_VALUE is its old definition (a kind of ..._DECL node). */
265 /* For each level (except not the global one),
266 a chain of BLOCK nodes for all the levels
267 that were entered and exited one level down. */
270 /* The BLOCK node for this level, if one has been preallocated.
271 If 0, the BLOCK is allocated (if needed) when the level is popped. */
274 /* The binding level which this one is contained in (inherits from). */
275 struct binding_level *level_chain;
277 /* The bytecode PC that marks the end of this level. */
279 /* The bytecode PC that marks the start of this level. */
282 #if defined(DEBUG_JAVA_BINDING_LEVELS)
283 /* Binding depth at which this level began. */
284 unsigned binding_depth;
285 #endif /* defined(DEBUG_JAVA_BINDING_LEVELS) */
288 #define NULL_BINDING_LEVEL (struct binding_level *) NULL
290 /* The binding level currently in effect. */
292 static struct binding_level *current_binding_level;
294 /* A chain of binding_level structures awaiting reuse. */
296 static struct binding_level *free_binding_level;
298 /* The outermost binding level, for names of file scope.
299 This is created when the compiler is started and exists
300 through the entire run. */
302 static struct binding_level *global_binding_level;
304 /* A PC value bigger than any PC value we may ever may encounter. */
306 #define LARGEST_PC (( (unsigned int)1 << (HOST_BITS_PER_INT - 1)) - 1)
308 /* Binding level structures are initialized by copying this one. */
310 static struct binding_level clear_binding_level
311 = {NULL_TREE, NULL_TREE, NULL_TREE, NULL_TREE,
312 NULL_BINDING_LEVEL, LARGEST_PC, 0};
315 /* A list (chain of TREE_LIST nodes) of all LABEL_DECLs in the function
316 that have names. Here so we can clear out their names' definitions
317 at the end of the function. */
319 static tree named_labels;
321 /* A list of LABEL_DECLs from outer contexts that are currently shadowed. */
323 static tree shadowed_labels;
326 tree java_global_trees[JTI_MAX];
328 /* Build (and pushdecl) a "promoted type" for all standard
329 types shorter than int. */
332 push_promoted_type (name, actual_type)
336 tree type = make_node (TREE_CODE (actual_type));
338 tree in_min = TYPE_MIN_VALUE (int_type_node);
339 tree in_max = TYPE_MAX_VALUE (int_type_node);
341 tree in_min = TYPE_MIN_VALUE (actual_type);
342 tree in_max = TYPE_MAX_VALUE (actual_type);
344 TYPE_MIN_VALUE (type) = copy_node (in_min);
345 TREE_TYPE (TYPE_MIN_VALUE (type)) = type;
346 TYPE_MAX_VALUE (type) = copy_node (in_max);
347 TREE_TYPE (TYPE_MAX_VALUE (type)) = type;
348 TYPE_PRECISION (type) = TYPE_PRECISION (int_type_node);
350 pushdecl (build_decl (TYPE_DECL, get_identifier (name), type));
354 /* Return a definition for a builtin function named NAME and whose data type
355 is TYPE. TYPE should be a function type with argument types.
356 FUNCTION_CODE tells later passes how to compile calls to this function.
357 See tree.h for its possible values.
359 If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME,
360 the name to be called if we can't opencode the function. */
363 builtin_function (name, type, function_code, class, library_name)
367 enum built_in_class class;
368 const char *library_name;
370 tree decl = build_decl (FUNCTION_DECL, get_identifier (name), type);
371 DECL_EXTERNAL (decl) = 1;
372 TREE_PUBLIC (decl) = 1;
374 SET_DECL_ASSEMBLER_NAME (decl, get_identifier (library_name));
375 make_decl_rtl (decl, NULL);
377 DECL_BUILT_IN_CLASS (decl) = class;
378 DECL_FUNCTION_CODE (decl) = function_code;
382 /* Return tree that represents a vtable for a primitive array. */
384 create_primitive_vtable (name)
390 sprintf (buf, "_Jv_%sVTable", name);
391 r = build_decl (VAR_DECL, get_identifier (buf), ptr_type_node);
392 DECL_EXTERNAL (r) = 1;
397 java_init_decl_processing ()
399 register tree endlink;
400 tree field = NULL_TREE;
403 init_class_processing ();
405 current_function_decl = NULL;
406 current_binding_level = NULL_BINDING_LEVEL;
407 free_binding_level = NULL_BINDING_LEVEL;
408 pushlevel (0); /* make the binding_level structure for global names */
409 global_binding_level = current_binding_level;
411 /* The code here must be similar to build_common_tree_nodes{,_2} in
412 tree.c, especially as to the order of initializing common nodes. */
413 error_mark_node = make_node (ERROR_MARK);
414 TREE_TYPE (error_mark_node) = error_mark_node;
416 /* Create sizetype first - needed for other types. */
417 initialize_sizetypes ();
419 byte_type_node = make_signed_type (8);
420 pushdecl (build_decl (TYPE_DECL, get_identifier ("byte"), byte_type_node));
421 short_type_node = make_signed_type (16);
422 pushdecl (build_decl (TYPE_DECL, get_identifier ("short"), short_type_node));
423 int_type_node = make_signed_type (32);
424 pushdecl (build_decl (TYPE_DECL, get_identifier ("int"), int_type_node));
425 long_type_node = make_signed_type (64);
426 pushdecl (build_decl (TYPE_DECL, get_identifier ("long"), long_type_node));
428 unsigned_byte_type_node = make_unsigned_type (8);
429 pushdecl (build_decl (TYPE_DECL, get_identifier ("unsigned byte"),
430 unsigned_byte_type_node));
431 unsigned_short_type_node = make_unsigned_type (16);
432 pushdecl (build_decl (TYPE_DECL, get_identifier ("unsigned short"),
433 unsigned_short_type_node));
434 unsigned_int_type_node = make_unsigned_type (32);
435 pushdecl (build_decl (TYPE_DECL, get_identifier ("unsigned int"),
436 unsigned_int_type_node));
437 unsigned_long_type_node = make_unsigned_type (64);
438 pushdecl (build_decl (TYPE_DECL, get_identifier ("unsigned long"),
439 unsigned_long_type_node));
441 set_sizetype (make_unsigned_type (POINTER_SIZE));
443 /* Define these next since types below may used them. */
444 integer_type_node = java_type_for_size (INT_TYPE_SIZE, 0);
445 integer_zero_node = build_int_2 (0, 0);
446 integer_one_node = build_int_2 (1, 0);
447 integer_two_node = build_int_2 (2, 0);
448 integer_four_node = build_int_2 (4, 0);
449 integer_minus_one_node = build_int_2 (-1, -1);
451 size_zero_node = size_int (0);
452 size_one_node = size_int (1);
453 bitsize_zero_node = bitsize_int (0);
454 bitsize_one_node = bitsize_int (1);
455 bitsize_unit_node = bitsize_int (BITS_PER_UNIT);
457 long_zero_node = build_int_2 (0, 0);
458 TREE_TYPE (long_zero_node) = long_type_node;
460 void_type_node = make_node (VOID_TYPE);
461 pushdecl (build_decl (TYPE_DECL, get_identifier ("void"), void_type_node));
462 layout_type (void_type_node); /* Uses size_zero_node */
463 ptr_type_node = build_pointer_type (void_type_node);
464 t = make_node (VOID_TYPE);
465 layout_type (t); /* Uses size_zero_node */
466 return_address_type_node = build_pointer_type (t);
468 null_pointer_node = build_int_2 (0, 0);
469 TREE_TYPE (null_pointer_node) = ptr_type_node;
471 /* Used by the parser to represent empty statements and blocks. */
472 empty_stmt_node = build1 (NOP_EXPR, void_type_node, size_zero_node);
473 CAN_COMPLETE_NORMALLY (empty_stmt_node) = 1;
476 /* Make a type to be the domain of a few array types
477 whose domains don't really matter.
478 200 is small enough that it always fits in size_t
479 and large enough that it can hold most function names for the
480 initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */
481 short_array_type_node = build_prim_array_type (short_type_node, 200);
483 char_type_node = make_node (CHAR_TYPE);
484 TYPE_PRECISION (char_type_node) = 16;
485 fixup_unsigned_type (char_type_node);
486 pushdecl (build_decl (TYPE_DECL, get_identifier ("char"), char_type_node));
488 boolean_type_node = make_node (BOOLEAN_TYPE);
489 TYPE_PRECISION (boolean_type_node) = 1;
490 fixup_unsigned_type (boolean_type_node);
491 pushdecl (build_decl (TYPE_DECL, get_identifier ("boolean"),
493 boolean_false_node = TYPE_MIN_VALUE (boolean_type_node);
494 boolean_true_node = TYPE_MAX_VALUE (boolean_type_node);
496 promoted_byte_type_node
497 = push_promoted_type ("promoted_byte", byte_type_node);
498 promoted_short_type_node
499 = push_promoted_type ("promoted_short", short_type_node);
500 promoted_char_type_node
501 = push_promoted_type ("promoted_char", char_type_node);
502 promoted_boolean_type_node
503 = push_promoted_type ("promoted_boolean", boolean_type_node);
505 float_type_node = make_node (REAL_TYPE);
506 TYPE_PRECISION (float_type_node) = 32;
507 pushdecl (build_decl (TYPE_DECL, get_identifier ("float"),
509 layout_type (float_type_node);
511 double_type_node = make_node (REAL_TYPE);
512 TYPE_PRECISION (double_type_node) = 64;
513 pushdecl (build_decl (TYPE_DECL, get_identifier ("double"),
515 layout_type (double_type_node);
517 float_zero_node = build_real (float_type_node, dconst0);
518 double_zero_node = build_real (double_type_node, dconst0);
520 /* These are the vtables for arrays of primitives. */
521 boolean_array_vtable = create_primitive_vtable ("boolean");
522 byte_array_vtable = create_primitive_vtable ("byte");
523 char_array_vtable = create_primitive_vtable ("char");
524 short_array_vtable = create_primitive_vtable ("short");
525 int_array_vtable = create_primitive_vtable ("int");
526 long_array_vtable = create_primitive_vtable ("long");
527 float_array_vtable = create_primitive_vtable ("float");
528 double_array_vtable = create_primitive_vtable ("double");
530 /* As you're adding items here, please update the code right after
531 this section, so that the filename containing the source code of
532 the pre-defined class gets registered correctly. */
533 unqualified_object_id_node = get_identifier ("Object");
534 object_type_node = lookup_class (get_identifier ("java.lang.Object"));
535 object_ptr_type_node = promote_type (object_type_node);
536 string_type_node = lookup_class (get_identifier ("java.lang.String"));
537 string_ptr_type_node = promote_type (string_type_node);
538 class_type_node = lookup_class (get_identifier ("java.lang.Class"));
539 throwable_type_node = lookup_class (get_identifier ("java.lang.Throwable"));
540 exception_type_node = lookup_class (get_identifier ("java.lang.Exception"));
541 runtime_exception_type_node =
542 lookup_class (get_identifier ("java.lang.RuntimeException"));
543 error_exception_type_node =
544 lookup_class (get_identifier ("java.lang.Error"));
545 class_not_found_type_node =
546 lookup_class (get_identifier ("java.lang.ClassNotFoundException"));
547 no_class_def_found_type_node =
548 lookup_class (get_identifier ("java.lang.NoClassDefFoundError"));
550 rawdata_ptr_type_node
551 = promote_type (lookup_class (get_identifier ("gnu.gcj.RawData")));
553 add_predefined_file (get_identifier ("java/lang/Class.java"));
554 add_predefined_file (get_identifier ("java/lang/Error.java"));
555 add_predefined_file (get_identifier ("java/lang/Object.java"));
556 add_predefined_file (get_identifier ("java/lang/RuntimeException.java"));
557 add_predefined_file (get_identifier ("java/lang/String.java"));
558 add_predefined_file (get_identifier ("java/lang/Throwable.java"));
559 add_predefined_file (get_identifier ("gnu/gcj/RawData.java"));
560 add_predefined_file (get_identifier ("java/lang/Exception.java"));
561 add_predefined_file (get_identifier ("java/lang/ClassNotFoundException.java"));
562 add_predefined_file (get_identifier ("java/lang/NoClassDefFoundError.java"));
563 add_predefined_file (get_identifier ("gnu/gcj/RawData.java"));
565 methodtable_type = make_node (RECORD_TYPE);
566 layout_type (methodtable_type);
567 build_decl (TYPE_DECL, get_identifier ("methodtable"), methodtable_type);
568 methodtable_ptr_type = build_pointer_type (methodtable_type);
570 TYPE_identifier_node = get_identifier ("TYPE");
571 init_identifier_node = get_identifier ("<init>");
572 clinit_identifier_node = get_identifier ("<clinit>");
573 finit_identifier_node = get_identifier ("finit$");
574 instinit_identifier_node = get_identifier ("instinit$");
575 void_signature_node = get_identifier ("()V");
576 length_identifier_node = get_identifier ("length");
577 finalize_identifier_node = get_identifier ("finalize");
578 this_identifier_node = get_identifier ("this");
579 super_identifier_node = get_identifier ("super");
580 continue_identifier_node = get_identifier ("continue");
581 access0_identifier_node = get_identifier ("access$0");
582 classdollar_identifier_node = get_identifier ("class$");
584 /* for lack of a better place to put this stub call */
585 init_expr_processing();
587 utf8const_type = make_node (RECORD_TYPE);
588 PUSH_FIELD (utf8const_type, field, "hash", unsigned_short_type_node);
589 PUSH_FIELD (utf8const_type, field, "length", unsigned_short_type_node);
590 FINISH_RECORD (utf8const_type);
591 utf8const_ptr_type = build_pointer_type (utf8const_type);
593 constants_type_node = make_node (RECORD_TYPE);
594 PUSH_FIELD (constants_type_node, field, "size", unsigned_int_type_node);
595 PUSH_FIELD (constants_type_node, field, "tags", ptr_type_node);
596 PUSH_FIELD (constants_type_node, field, "data", ptr_type_node);
597 FINISH_RECORD (constants_type_node);
598 build_decl (TYPE_DECL, get_identifier ("constants"), constants_type_node);
600 access_flags_type_node = unsigned_short_type_node;
602 dtable_type = make_node (RECORD_TYPE);
603 dtable_ptr_type = build_pointer_type (dtable_type);
605 one_elt_array_domain_type = build_index_type (integer_one_node);
606 otable_type = build_array_type (integer_type_node,
607 one_elt_array_domain_type);
608 TYPE_NONALIASED_COMPONENT (otable_type) = 1;
609 otable_ptr_type = build_pointer_type (otable_type);
611 method_symbol_type = make_node (RECORD_TYPE);
612 PUSH_FIELD (method_symbol_type, field, "clname", utf8const_ptr_type);
613 PUSH_FIELD (method_symbol_type, field, "name", utf8const_ptr_type);
614 PUSH_FIELD (method_symbol_type, field, "signature", utf8const_ptr_type);
615 FINISH_RECORD (method_symbol_type);
617 method_symbols_array_type = build_array_type (method_symbol_type,
618 one_elt_array_domain_type);
619 method_symbols_array_ptr_type = build_pointer_type
620 (method_symbols_array_type);
622 otable_decl = build_decl (VAR_DECL, get_identifier ("otable"), otable_type);
623 DECL_EXTERNAL (otable_decl) = 1;
624 TREE_STATIC (otable_decl) = 1;
625 TREE_READONLY (otable_decl) = 1;
626 pushdecl (otable_decl);
628 otable_syms_decl = build_decl (VAR_DECL, get_identifier ("otable_syms"),
629 method_symbols_array_type);
630 TREE_STATIC (otable_syms_decl) = 1;
631 TREE_CONSTANT (otable_syms_decl) = 1;
632 pushdecl (otable_syms_decl);
634 PUSH_FIELD (object_type_node, field, "vtable", dtable_ptr_type);
635 /* This isn't exactly true, but it is what we have in the source.
636 There is an unresolved issue here, which is whether the vtable
637 should be marked by the GC. */
638 if (! flag_hash_synchronization)
639 PUSH_FIELD (object_type_node, field, "sync_info",
640 build_pointer_type (object_type_node));
641 for (t = TYPE_FIELDS (object_type_node); t != NULL_TREE; t = TREE_CHAIN (t))
642 FIELD_PRIVATE (t) = 1;
643 FINISH_RECORD (object_type_node);
645 field_type_node = make_node (RECORD_TYPE);
646 field_ptr_type_node = build_pointer_type (field_type_node);
647 method_type_node = make_node (RECORD_TYPE);
648 method_ptr_type_node = build_pointer_type (method_type_node);
650 set_super_info (0, class_type_node, object_type_node, 0);
651 set_super_info (0, string_type_node, object_type_node, 0);
652 class_ptr_type = build_pointer_type (class_type_node);
654 PUSH_FIELD (class_type_node, field, "next", class_ptr_type);
655 PUSH_FIELD (class_type_node, field, "name", utf8const_ptr_type);
656 PUSH_FIELD (class_type_node, field, "accflags", access_flags_type_node);
657 PUSH_FIELD (class_type_node, field, "superclass", class_ptr_type);
658 PUSH_FIELD (class_type_node, field, "constants", constants_type_node);
659 PUSH_FIELD (class_type_node, field, "methods", method_ptr_type_node);
660 PUSH_FIELD (class_type_node, field, "method_count", short_type_node);
661 PUSH_FIELD (class_type_node, field, "vtable_method_count", short_type_node);
662 PUSH_FIELD (class_type_node, field, "fields", field_ptr_type_node);
663 PUSH_FIELD (class_type_node, field, "size_in_bytes", int_type_node);
664 PUSH_FIELD (class_type_node, field, "field_count", short_type_node);
665 PUSH_FIELD (class_type_node, field, "static_field_count", short_type_node);
666 PUSH_FIELD (class_type_node, field, "vtable", dtable_ptr_type);
667 PUSH_FIELD (class_type_node, field, "otable", otable_ptr_type);
668 PUSH_FIELD (class_type_node, field, "otable_syms",
669 method_symbols_array_ptr_type);
670 PUSH_FIELD (class_type_node, field, "interfaces",
671 build_pointer_type (class_ptr_type));
672 PUSH_FIELD (class_type_node, field, "loader", ptr_type_node);
673 PUSH_FIELD (class_type_node, field, "interface_count", short_type_node);
674 PUSH_FIELD (class_type_node, field, "state", byte_type_node);
675 PUSH_FIELD (class_type_node, field, "thread", ptr_type_node);
676 PUSH_FIELD (class_type_node, field, "depth", short_type_node);
677 PUSH_FIELD (class_type_node, field, "ancestors", ptr_type_node);
678 PUSH_FIELD (class_type_node, field, "idt", ptr_type_node);
679 PUSH_FIELD (class_type_node, field, "arrayclass", ptr_type_node);
680 PUSH_FIELD (class_type_node, field, "protectionDomain", ptr_type_node);
681 for (t = TYPE_FIELDS (class_type_node); t != NULL_TREE; t = TREE_CHAIN (t))
682 FIELD_PRIVATE (t) = 1;
683 push_super_field (class_type_node, object_type_node);
685 /* Hash synchronization requires at least double-word alignment. */
686 if (flag_hash_synchronization && POINTER_SIZE < 64)
687 TYPE_ALIGN (class_type_node) = 64;
689 FINISH_RECORD (class_type_node);
690 build_decl (TYPE_DECL, get_identifier ("Class"), class_type_node);
692 field_info_union_node = make_node (UNION_TYPE);
693 PUSH_FIELD (field_info_union_node, field, "boffset", int_type_node);
694 PUSH_FIELD (field_info_union_node, field, "addr", ptr_type_node);
696 PUSH_FIELD (field_info_union_node, field, "idx", unsigned_short_type_node);
698 layout_type (field_info_union_node);
700 PUSH_FIELD (field_type_node, field, "name", utf8const_ptr_type);
701 PUSH_FIELD (field_type_node, field, "type", class_ptr_type);
702 PUSH_FIELD (field_type_node, field, "accflags", access_flags_type_node);
703 PUSH_FIELD (field_type_node, field, "bsize", unsigned_short_type_node);
704 PUSH_FIELD (field_type_node, field, "info", field_info_union_node);
705 FINISH_RECORD (field_type_node);
706 build_decl (TYPE_DECL, get_identifier ("Field"), field_type_node);
708 nativecode_ptr_array_type_node
709 = build_array_type (nativecode_ptr_type_node, one_elt_array_domain_type);
711 PUSH_FIELD (dtable_type, field, "class", class_ptr_type);
712 PUSH_FIELD (dtable_type, field, "methods", nativecode_ptr_array_type_node);
713 FINISH_RECORD (dtable_type);
714 build_decl (TYPE_DECL, get_identifier ("dispatchTable"), dtable_type);
716 #define jint_type int_type_node
717 #define jint_ptr_type ptr_type_node
719 jexception_type = make_node (RECORD_TYPE);
720 PUSH_FIELD (jexception_type, field, "start_pc", ptr_type_node);
721 PUSH_FIELD (jexception_type, field, "end_pc", ptr_type_node);
722 PUSH_FIELD (jexception_type, field, "handler_pc", ptr_type_node);
723 PUSH_FIELD (jexception_type, field, "catch_type", class_ptr_type);
724 FINISH_RECORD (jexception_type);
725 build_decl (TYPE_DECL, get_identifier ("jexception"), field_type_node);
726 jexception_ptr_type = build_pointer_type (jexception_type);
728 lineNumberEntry_type = make_node (RECORD_TYPE);
729 PUSH_FIELD (lineNumberEntry_type, field, "line_nr", unsigned_short_type_node);
730 PUSH_FIELD (lineNumberEntry_type, field, "start_pc", ptr_type_node);
731 FINISH_RECORD (lineNumberEntry_type);
733 lineNumbers_type = make_node (RECORD_TYPE);
734 PUSH_FIELD (lineNumbers_type, field, "length", unsigned_int_type_node);
735 FINISH_RECORD (lineNumbers_type);
737 #define instn_ptr_type_node ptr_type_node /* XXX JH */
739 #define lineNumbers_ptr_type_node build_pointer_type(lineNumbers_type)
741 PUSH_FIELD (method_type_node, field, "name", utf8const_ptr_type);
742 PUSH_FIELD (method_type_node, field, "signature", utf8const_ptr_type);
743 PUSH_FIELD (method_type_node, field, "accflags", access_flags_type_node);
744 PUSH_FIELD (method_type_node, field, "index", unsigned_short_type_node);
745 PUSH_FIELD (method_type_node, field, "ncode", nativecode_ptr_type_node);
746 PUSH_FIELD (method_type_node, field, "throws", ptr_type_node);
747 FINISH_RECORD (method_type_node);
748 build_decl (TYPE_DECL, get_identifier ("Method"), method_type_node);
750 endlink = end_params_node = tree_cons (NULL_TREE, void_type_node, NULL_TREE);
752 t = tree_cons (NULL_TREE, class_ptr_type,
753 tree_cons (NULL_TREE, int_type_node, endlink));
754 alloc_object_node = builtin_function ("_Jv_AllocObject",
755 build_function_type (ptr_type_node, t),
756 0, NOT_BUILT_IN, NULL);
757 DECL_IS_MALLOC (alloc_object_node) = 1;
758 alloc_no_finalizer_node =
759 builtin_function ("_Jv_AllocObjectNoFinalizer",
760 build_function_type (ptr_type_node, t),
761 0, NOT_BUILT_IN, NULL);
762 DECL_IS_MALLOC (alloc_no_finalizer_node) = 1;
764 t = tree_cons (NULL_TREE, ptr_type_node, endlink);
765 soft_initclass_node = builtin_function ("_Jv_InitClass",
766 build_function_type (void_type_node,
768 0, NOT_BUILT_IN, NULL);
770 throw_node = builtin_function ("_Jv_Throw",
771 build_function_type (ptr_type_node, t),
772 0, NOT_BUILT_IN, NULL);
773 /* Mark throw_nodes as `noreturn' functions with side effects. */
774 TREE_THIS_VOLATILE (throw_node) = 1;
775 TREE_SIDE_EFFECTS (throw_node) = 1;
777 t = build_function_type (int_type_node, endlink);
778 soft_monitorenter_node
779 = builtin_function ("_Jv_MonitorEnter", t, 0, NOT_BUILT_IN, NULL);
780 soft_monitorexit_node
781 = builtin_function ("_Jv_MonitorExit", t, 0, NOT_BUILT_IN, NULL);
783 t = tree_cons (NULL_TREE, int_type_node,
784 tree_cons (NULL_TREE, int_type_node, endlink));
786 = builtin_function ("_Jv_NewPrimArray",
787 build_function_type(ptr_type_node, t),
788 0, NOT_BUILT_IN, NULL);
789 DECL_IS_MALLOC (soft_newarray_node) = 1;
791 t = tree_cons (NULL_TREE, int_type_node,
792 tree_cons (NULL_TREE, class_ptr_type,
793 tree_cons (NULL_TREE, object_ptr_type_node, endlink)));
795 = builtin_function ("_Jv_NewObjectArray",
796 build_function_type (ptr_type_node, t),
797 0, NOT_BUILT_IN, NULL);
798 DECL_IS_MALLOC (soft_anewarray_node) = 1;
800 t = tree_cons (NULL_TREE, ptr_type_node,
801 tree_cons (NULL_TREE, int_type_node, endlink));
802 soft_multianewarray_node
803 = builtin_function ("_Jv_NewMultiArray",
804 build_function_type (ptr_type_node, t),
805 0, NOT_BUILT_IN, NULL);
806 DECL_IS_MALLOC (soft_multianewarray_node) = 1;
808 t = build_function_type (void_type_node,
809 tree_cons (NULL_TREE, int_type_node, endlink));
810 soft_badarrayindex_node
811 = builtin_function ("_Jv_ThrowBadArrayIndex", t,
812 0, NOT_BUILT_IN, NULL);
813 /* Mark soft_badarrayindex_node as a `noreturn' function with side
815 TREE_THIS_VOLATILE (soft_badarrayindex_node) = 1;
816 TREE_SIDE_EFFECTS (soft_badarrayindex_node) = 1;
818 soft_nullpointer_node
819 = builtin_function ("_Jv_ThrowNullPointerException",
820 build_function_type (void_type_node, endlink),
821 0, NOT_BUILT_IN, NULL);
822 /* Mark soft_nullpointer_node as a `noreturn' function with side
824 TREE_THIS_VOLATILE (soft_nullpointer_node) = 1;
825 TREE_SIDE_EFFECTS (soft_nullpointer_node) = 1;
827 t = tree_cons (NULL_TREE, class_ptr_type,
828 tree_cons (NULL_TREE, object_ptr_type_node, endlink));
830 = builtin_function ("_Jv_CheckCast",
831 build_function_type (ptr_type_node, t),
832 0, NOT_BUILT_IN, NULL);
833 t = tree_cons (NULL_TREE, object_ptr_type_node,
834 tree_cons (NULL_TREE, class_ptr_type, endlink));
836 = builtin_function ("_Jv_IsInstanceOf",
837 build_function_type (boolean_type_node, t),
838 0, NOT_BUILT_IN, NULL);
839 t = tree_cons (NULL_TREE, object_ptr_type_node,
840 tree_cons (NULL_TREE, object_ptr_type_node, endlink));
841 soft_checkarraystore_node
842 = builtin_function ("_Jv_CheckArrayStore",
843 build_function_type (void_type_node, t),
844 0, NOT_BUILT_IN, NULL);
845 t = tree_cons (NULL_TREE, ptr_type_node,
846 tree_cons (NULL_TREE, ptr_type_node,
847 tree_cons (NULL_TREE, int_type_node, endlink)));
848 soft_lookupinterfacemethod_node
849 = builtin_function ("_Jv_LookupInterfaceMethodIdx",
850 build_function_type (ptr_type_node, t),
851 0, NOT_BUILT_IN, NULL);
853 t = tree_cons (NULL_TREE, object_ptr_type_node,
854 tree_cons (NULL_TREE, ptr_type_node,
855 tree_cons (NULL_TREE, ptr_type_node, endlink)));
856 soft_lookupjnimethod_node
857 = builtin_function ("_Jv_LookupJNIMethod",
858 build_function_type (ptr_type_node, t),
859 0, NOT_BUILT_IN, NULL);
860 t = tree_cons (NULL_TREE, ptr_type_node, endlink);
861 soft_getjnienvnewframe_node
862 = builtin_function ("_Jv_GetJNIEnvNewFrame",
863 build_function_type (ptr_type_node, t),
864 0, NOT_BUILT_IN, NULL);
865 soft_jnipopsystemframe_node
866 = builtin_function ("_Jv_JNI_PopSystemFrame",
867 build_function_type (ptr_type_node, t),
868 0, NOT_BUILT_IN, NULL);
870 t = tree_cons (NULL_TREE, double_type_node,
871 tree_cons (NULL_TREE, double_type_node, endlink));
873 = builtin_function ("__builtin_fmod",
874 build_function_type (double_type_node, t),
875 BUILT_IN_FMOD, BUILT_IN_NORMAL, "fmod");
878 t = tree_cons (NULL_TREE, float_type_node,
879 tree_cons (NULL_TREE, float_type_node, endlink));
881 = builtin_function ("__builtin_fmodf",
882 build_function_type (float_type_node, t),
883 BUILT_IN_FMOD, BUILT_IN_NORMAL, "fmodf");
887 = builtin_function ("_Jv_divI",
888 build_function_type (int_type_node, t),
889 0, NOT_BUILT_IN, NULL);
892 = builtin_function ("_Jv_remI",
893 build_function_type (int_type_node, t),
894 0, NOT_BUILT_IN, NULL);
897 = builtin_function ("_Jv_divJ",
898 build_function_type (long_type_node, t),
899 0, NOT_BUILT_IN, NULL);
902 = builtin_function ("_Jv_remJ",
903 build_function_type (long_type_node, t),
904 0, NOT_BUILT_IN, NULL);
906 /* Initialize variables for except.c. */
907 eh_personality_libfunc = init_one_libfunc (USING_SJLJ_EXCEPTIONS
908 ? "__gcj_personality_sj0"
909 : "__gcj_personality_v0");
910 lang_eh_runtime_type = prepare_eh_table_type;
914 /* Register nodes with the garbage collector. */
915 ggc_add_tree_root (java_global_trees, ARRAY_SIZE (java_global_trees));
916 ggc_add_tree_root (&decl_map, 1);
917 ggc_add_tree_root (&pending_local_decls, 1);
919 initialize_builtins ();
923 /* Look up NAME in the current binding level and its superiors
924 in the namespace of variables, functions and typedefs.
925 Return a ..._DECL node of some kind representing its definition,
926 or return 0 if it is undefined. */
933 if (current_binding_level != global_binding_level
934 && IDENTIFIER_LOCAL_VALUE (name))
935 val = IDENTIFIER_LOCAL_VALUE (name);
937 val = IDENTIFIER_GLOBAL_VALUE (name);
941 /* Similar to `lookup_name' but look only at current binding level and
942 the previous one if its the parameter level. */
945 lookup_name_current_level (name)
950 if (current_binding_level == global_binding_level)
951 return IDENTIFIER_GLOBAL_VALUE (name);
953 if (IDENTIFIER_LOCAL_VALUE (name) == 0)
956 for (t = current_binding_level->names; t; t = TREE_CHAIN (t))
957 if (DECL_NAME (t) == name)
963 /* Use a binding level to record a labeled block declaration */
966 push_labeled_block (lb)
969 register tree name = DECL_NAME (LABELED_BLOCK_LABEL (lb));
970 register struct binding_level *b = current_binding_level;
971 tree oldlocal = IDENTIFIER_LOCAL_VALUE (name);
973 b->shadowed = tree_cons (name, oldlocal, b->shadowed);
974 TREE_CHAIN (lb) = b->names;
976 IDENTIFIER_LOCAL_VALUE (name) = lb;
979 /* Pop the current binding level, reinstalling values for the previous
985 struct binding_level *b = current_binding_level;
986 tree label = b->names;
987 IDENTIFIER_LOCAL_VALUE (DECL_NAME (LABELED_BLOCK_LABEL (label))) =
990 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (b->shadowed)) =
991 TREE_VALUE (b->shadowed);
993 /* Pop the current level, and free the structure for reuse. */
994 current_binding_level = current_binding_level->level_chain;
995 b->level_chain = free_binding_level;
996 free_binding_level = b;
999 /* Record a decl-node X as belonging to the current lexical scope.
1000 Check for errors (such as an incompatible declaration for the same
1001 name already seen in the same scope).
1003 Returns either X or an old decl for the same name.
1004 If an old decl is returned, it may have been smashed
1005 to agree with what X says. */
1012 register tree name = DECL_NAME (x);
1013 register struct binding_level *b = current_binding_level;
1015 if (TREE_CODE (x) != TYPE_DECL)
1016 DECL_CONTEXT (x) = current_function_decl;
1022 t = lookup_name_current_level (name);
1023 if (t != 0 && t == error_mark_node)
1024 /* error_mark_node is 0 for a while during initialization! */
1027 error_with_decl (x, "`%s' used prior to declaration");
1032 file = DECL_SOURCE_FILE (t);
1033 line = DECL_SOURCE_LINE (t);
1036 /* If we're naming a hitherto-unnamed type, set its TYPE_NAME
1037 to point to the TYPE_DECL.
1038 Since Java does not have typedefs, a type can only have
1039 one (true) name, given by a class, interface, or builtin. */
1040 if (TREE_CODE (x) == TYPE_DECL
1041 && TYPE_NAME (TREE_TYPE (x)) == 0
1042 && TREE_TYPE (x) != error_mark_node)
1044 TYPE_NAME (TREE_TYPE (x)) = x;
1045 TYPE_STUB_DECL (TREE_TYPE (x)) = x;
1048 /* This name is new in its binding level.
1049 Install the new declaration and return it. */
1050 if (b == global_binding_level)
1052 /* Install a global value. */
1054 IDENTIFIER_GLOBAL_VALUE (name) = x;
1058 /* Here to install a non-global value. */
1059 tree oldlocal = IDENTIFIER_LOCAL_VALUE (name);
1060 IDENTIFIER_LOCAL_VALUE (name) = x;
1063 /* Warn if shadowing an argument at the top level of the body. */
1064 if (oldlocal != 0 && !DECL_EXTERNAL (x)
1065 /* This warning doesn't apply to the parms of a nested fcn. */
1066 && ! current_binding_level->parm_flag
1067 /* Check that this is one level down from the parms. */
1068 && current_binding_level->level_chain->parm_flag
1069 /* Check that the decl being shadowed
1070 comes from the parm level, one level up. */
1071 && chain_member (oldlocal, current_binding_level->level_chain->names))
1073 if (TREE_CODE (oldlocal) == PARM_DECL)
1074 pedwarn ("declaration of `%s' shadows a parameter",
1075 IDENTIFIER_POINTER (name));
1077 pedwarn ("declaration of `%s' shadows a symbol from the parameter list",
1078 IDENTIFIER_POINTER (name));
1081 /* Maybe warn if shadowing something else. */
1082 else if (warn_shadow && !DECL_EXTERNAL (x)
1083 /* No shadow warnings for internally generated vars. */
1084 && DECL_SOURCE_LINE (x) != 0
1085 /* No shadow warnings for vars made for inlining. */
1086 && ! DECL_FROM_INLINE (x))
1088 const char *warnstring = 0;
1090 if (TREE_CODE (x) == PARM_DECL
1091 && current_binding_level->level_chain->parm_flag)
1092 /* Don't warn about the parm names in function declarator
1093 within a function declarator.
1094 It would be nice to avoid warning in any function
1095 declarator in a declaration, as opposed to a definition,
1096 but there is no way to tell it's not a definition. */
1098 else if (oldlocal != 0 && TREE_CODE (oldlocal) == PARM_DECL)
1099 warnstring = "declaration of `%s' shadows a parameter";
1100 else if (oldlocal != 0)
1101 warnstring = "declaration of `%s' shadows previous local";
1102 else if (IDENTIFIER_GLOBAL_VALUE (name) != 0
1103 && IDENTIFIER_GLOBAL_VALUE (name) != error_mark_node)
1104 warnstring = "declaration of `%s' shadows global declaration";
1107 warning (warnstring, IDENTIFIER_POINTER (name));
1111 /* If storing a local value, there may already be one (inherited).
1112 If so, record it for restoration when this binding level ends. */
1114 b->shadowed = tree_cons (name, oldlocal, b->shadowed);
1118 /* Put decls on list in reverse order.
1119 We will reverse them later if necessary. */
1120 TREE_CHAIN (x) = b->names;
1127 pushdecl_force_head (x)
1130 current_binding_level->names = x;
1133 /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL, if appropriate. */
1136 pushdecl_top_level (x)
1140 register struct binding_level *b = current_binding_level;
1142 current_binding_level = global_binding_level;
1144 current_binding_level = b;
1148 /* Nonzero if we are currently in the global binding level. */
1151 global_bindings_p ()
1153 return current_binding_level == global_binding_level;
1156 /* Return the list of declarations of the current level.
1157 Note that this list is in reverse order unless/until
1158 you nreverse it; and when you do nreverse it, you must
1159 store the result back using `storedecls' or you will lose. */
1164 return current_binding_level->names;
1167 /* Create a new `struct binding_level'. */
1169 static struct binding_level *
1170 make_binding_level ()
1173 return (struct binding_level *) xmalloc (sizeof (struct binding_level));
1178 int unused ATTRIBUTE_UNUSED;
1180 register struct binding_level *newlevel = NULL_BINDING_LEVEL;
1183 /* If this is the top level of a function,
1184 just make sure that NAMED_LABELS is 0. */
1186 if (current_binding_level == global_binding_level)
1190 /* Reuse or create a struct for this binding level. */
1192 if (free_binding_level)
1194 newlevel = free_binding_level;
1195 free_binding_level = free_binding_level->level_chain;
1199 newlevel = make_binding_level ();
1202 /* Add this level to the front of the chain (stack) of levels that
1205 *newlevel = clear_binding_level;
1206 newlevel->level_chain = current_binding_level;
1207 current_binding_level = newlevel;
1208 #if defined(DEBUG_JAVA_BINDING_LEVELS)
1209 newlevel->binding_depth = binding_depth;
1211 fprintf (stderr, "push %s level 0x%08x pc %d\n",
1212 (is_class_level) ? "class" : "block", newlevel, current_pc);
1215 #endif /* defined(DEBUG_JAVA_BINDING_LEVELS) */
1218 /* Exit a binding level.
1219 Pop the level off, and restore the state of the identifier-decl mappings
1220 that were in effect when this level was entered.
1222 If KEEP is nonzero, this level had explicit declarations, so
1223 and create a "block" (a BLOCK node) for the level
1224 to record its declarations and subblocks for symbol table output.
1226 If FUNCTIONBODY is nonzero, this level is the body of a function,
1227 so create a block as if KEEP were set and also clear out all
1230 If REVERSE is nonzero, reverse the order of decls before putting
1231 them into the BLOCK. */
1234 poplevel (keep, reverse, functionbody)
1240 /* The chain of decls was accumulated in reverse order.
1241 Put it into forward order, just for cleanliness. */
1243 tree subblocks = current_binding_level->blocks;
1246 int block_previously_created;
1248 #if defined(DEBUG_JAVA_BINDING_LEVELS)
1251 if (current_binding_level->end_pc != LARGEST_PC)
1252 fprintf (stderr, "pop %s level 0x%08x pc %d (end pc %d)\n",
1253 (is_class_level) ? "class" : "block", current_binding_level, current_pc,
1254 current_binding_level->end_pc);
1256 fprintf (stderr, "pop %s level 0x%08x pc %d\n",
1257 (is_class_level) ? "class" : "block", current_binding_level, current_pc);
1259 if (is_class_level != (current_binding_level == class_binding_level))
1262 fprintf (stderr, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
1266 #endif /* defined(DEBUG_JAVA_BINDING_LEVELS) */
1268 /* Get the decls in the order they were written.
1269 Usually current_binding_level->names is in reverse order.
1270 But parameter decls were previously put in forward order. */
1273 current_binding_level->names
1274 = decls = nreverse (current_binding_level->names);
1276 decls = current_binding_level->names;
1278 /* Output any nested inline functions within this block
1279 if they weren't already output. */
1281 for (decl = decls; decl; decl = TREE_CHAIN (decl))
1282 if (TREE_CODE (decl) == FUNCTION_DECL
1283 && ! TREE_ASM_WRITTEN (decl)
1284 && DECL_INITIAL (decl) != 0
1285 && TREE_ADDRESSABLE (decl))
1287 /* If this decl was copied from a file-scope decl
1288 on account of a block-scope extern decl,
1289 propagate TREE_ADDRESSABLE to the file-scope decl.
1291 DECL_ABSTRACT_ORIGIN can be set to itself if warn_return_type is
1292 true, since then the decl goes through save_for_inline_copying. */
1293 if (DECL_ABSTRACT_ORIGIN (decl) != 0
1294 && DECL_ABSTRACT_ORIGIN (decl) != decl)
1295 TREE_ADDRESSABLE (DECL_ABSTRACT_ORIGIN (decl)) = 1;
1298 push_function_context ();
1299 output_inline_function (decl);
1300 pop_function_context ();
1304 /* If there were any declarations in that level,
1305 or if this level is a function body,
1306 create a BLOCK to record them for the life of this function. */
1309 block_previously_created = (current_binding_level->this_block != 0);
1310 if (block_previously_created)
1311 block = current_binding_level->this_block;
1312 else if (keep || functionbody)
1313 block = make_node (BLOCK);
1316 BLOCK_VARS (block) = decls;
1317 BLOCK_SUBBLOCKS (block) = subblocks;
1320 /* In each subblock, record that this is its superior. */
1322 for (link = subblocks; link; link = TREE_CHAIN (link))
1323 BLOCK_SUPERCONTEXT (link) = block;
1325 /* Clear out the meanings of the local variables of this level. */
1327 for (link = decls; link; link = TREE_CHAIN (link))
1329 tree name = DECL_NAME (link);
1330 if (name != 0 && IDENTIFIER_LOCAL_VALUE (name) == link)
1332 /* If the ident. was used or addressed via a local extern decl,
1333 don't forget that fact. */
1334 if (DECL_EXTERNAL (link))
1336 if (TREE_USED (link))
1337 TREE_USED (name) = 1;
1338 if (TREE_ADDRESSABLE (link))
1339 TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (link)) = 1;
1341 IDENTIFIER_LOCAL_VALUE (name) = 0;
1345 /* Restore all name-meanings of the outer levels
1346 that were shadowed by this level. */
1348 for (link = current_binding_level->shadowed; link; link = TREE_CHAIN (link))
1349 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
1351 /* If the level being exited is the top level of a function,
1352 check over all the labels, and clear out the current
1353 (function local) meanings of their names. */
1357 /* If this is the top level block of a function,
1358 the vars are the function's parameters.
1359 Don't leave them in the BLOCK because they are
1360 found in the FUNCTION_DECL instead. */
1362 BLOCK_VARS (block) = 0;
1364 /* Clear out the definitions of all label names,
1365 since their scopes end here,
1366 and add them to BLOCK_VARS. */
1369 for (link = named_labels; link; link = TREE_CHAIN (link))
1371 register tree label = TREE_VALUE (link);
1373 if (DECL_INITIAL (label) == 0)
1375 error_with_decl (label, "label `%s' used but not defined");
1376 /* Avoid crashing later. */
1377 define_label (input_filename, lineno,
1380 else if (warn_unused[UNUSED_LABEL] && !TREE_USED (label))
1381 warning_with_decl (label, "label `%s' defined but not used");
1382 IDENTIFIER_LABEL_VALUE (DECL_NAME (label)) = 0;
1384 /* Put the labels into the "variables" of the
1385 top-level block, so debugger can see them. */
1386 TREE_CHAIN (label) = BLOCK_VARS (block);
1387 BLOCK_VARS (block) = label;
1392 /* Pop the current level, and free the structure for reuse. */
1395 register struct binding_level *level = current_binding_level;
1396 current_binding_level = current_binding_level->level_chain;
1398 level->level_chain = free_binding_level;
1399 free_binding_level = level;
1402 /* Dispose of the block that we just made inside some higher level. */
1404 DECL_INITIAL (current_function_decl) = block;
1407 if (!block_previously_created)
1408 current_binding_level->blocks
1409 = chainon (current_binding_level->blocks, block);
1411 /* If we did not make a block for the level just exited,
1412 any blocks made for inner levels
1413 (since they cannot be recorded as subblocks in that level)
1414 must be carried forward so they will later become subblocks
1415 of something else. */
1417 current_binding_level->blocks
1418 = chainon (current_binding_level->blocks, subblocks);
1420 /* Set the TYPE_CONTEXTs for all of the tagged types belonging to this
1421 binding contour so that they point to the appropriate construct, i.e.
1422 either to the current FUNCTION_DECL node, or else to the BLOCK node
1423 we just constructed.
1425 Note that for tagged types whose scope is just the formal parameter
1426 list for some function type specification, we can't properly set
1427 their TYPE_CONTEXTs here, because we don't have a pointer to the
1428 appropriate FUNCTION_TYPE node readily available to us. For those
1429 cases, the TYPE_CONTEXTs of the relevant tagged type nodes get set
1430 in `grokdeclarator' as soon as we have created the FUNCTION_TYPE
1431 node which will represent the "scope" for these "parameter list local"
1436 TREE_USED (block) = 1;
1441 maybe_pushlevels (pc)
1444 #if defined(DEBUG_JAVA_BINDING_LEVELS)
1448 while (pending_local_decls != NULL_TREE &&
1449 DECL_LOCAL_START_PC (pending_local_decls) <= pc)
1451 tree *ptr = &pending_local_decls;
1453 int end_pc = DECL_LOCAL_END_PC (decl);
1455 while (*ptr != NULL_TREE
1456 && DECL_LOCAL_START_PC (*ptr) <= pc
1457 && DECL_LOCAL_END_PC (*ptr) == end_pc)
1458 ptr = &TREE_CHAIN (*ptr);
1459 pending_local_decls = *ptr;
1462 /* Force non-nested range to be nested in current range. */
1463 if (end_pc > current_binding_level->end_pc)
1464 end_pc = current_binding_level->end_pc;
1466 maybe_start_try (pc, end_pc);
1469 expand_start_bindings (0);
1471 current_binding_level->end_pc = end_pc;
1472 current_binding_level->start_pc = pc;
1473 current_binding_level->names = decl;
1474 for ( ; decl != NULL_TREE; decl = TREE_CHAIN (decl))
1476 push_jvm_slot (DECL_LOCAL_SLOT_NUMBER (decl), decl);
1480 maybe_start_try (pc, 0);
1484 maybe_poplevels (pc)
1487 #if defined(DEBUG_JAVA_BINDING_LEVELS)
1491 while (current_binding_level->end_pc <= pc)
1493 expand_end_bindings (getdecls (), 1, 0);
1494 maybe_end_try (current_binding_level->start_pc, pc);
1497 maybe_end_try (0, pc);
1500 /* Terminate any binding which began during the range beginning at
1501 start_pc. This tidies up improperly nested local variable ranges
1502 and exception handlers; a variable declared within an exception
1503 range is forcibly terminated when that exception ends. */
1506 force_poplevels (start_pc)
1509 while (current_binding_level->start_pc > start_pc)
1511 if (pedantic && current_binding_level->start_pc > start_pc)
1512 warning_with_decl (current_function_decl,
1513 "In %s: overlapped variable and exception ranges at %d",
1514 current_binding_level->start_pc);
1515 expand_end_bindings (getdecls (), 1, 0);
1520 /* Insert BLOCK at the end of the list of subblocks of the
1521 current binding level. This is used when a BIND_EXPR is expanded,
1522 to handle the BLOCK node inside the BIND_EXPR. */
1525 insert_block (block)
1528 TREE_USED (block) = 1;
1529 current_binding_level->blocks
1530 = chainon (current_binding_level->blocks, block);
1533 /* Set the BLOCK node for the innermost scope
1534 (the one we are currently in). */
1538 register tree block;
1540 current_binding_level->this_block = block;
1541 current_binding_level->names = chainon (current_binding_level->names,
1542 BLOCK_VARS (block));
1543 current_binding_level->blocks = chainon (current_binding_level->blocks,
1544 BLOCK_SUBBLOCKS (block));
1547 /* integrate_decl_tree calls this function. */
1550 java_dup_lang_specific_decl (node)
1554 struct lang_decl *x;
1556 if (!DECL_LANG_SPECIFIC (node))
1559 if (TREE_CODE (node) == VAR_DECL)
1560 lang_decl_size = sizeof (struct lang_decl_var);
1562 lang_decl_size = sizeof (struct lang_decl);
1563 x = (struct lang_decl *) ggc_alloc (lang_decl_size);
1564 memcpy (x, DECL_LANG_SPECIFIC (node), lang_decl_size);
1565 DECL_LANG_SPECIFIC (node) = x;
1569 give_name_to_locals (jcf)
1572 int i, n = DECL_LOCALVARIABLES_OFFSET (current_function_decl);
1573 int code_offset = DECL_CODE_OFFSET (current_function_decl);
1575 pending_local_decls = NULL_TREE;
1579 n = JCF_readu2 (jcf);
1580 for (i = 0; i < n; i++)
1582 int start_pc = JCF_readu2 (jcf);
1583 int length = JCF_readu2 (jcf);
1584 int name_index = JCF_readu2 (jcf);
1585 int signature_index = JCF_readu2 (jcf);
1586 int slot = JCF_readu2 (jcf);
1587 tree name = get_name_constant (jcf, name_index);
1588 tree type = parse_signature (jcf, signature_index);
1589 if (slot < DECL_ARG_SLOT_COUNT (current_function_decl)
1591 && length == DECL_CODE_LENGTH (current_function_decl))
1593 tree decl = TREE_VEC_ELT (decl_map, slot);
1594 DECL_NAME (decl) = name;
1595 SET_DECL_ASSEMBLER_NAME (decl, name);
1596 if (TREE_CODE (decl) != PARM_DECL || TREE_TYPE (decl) != type)
1597 warning ("bad type in parameter debug info");
1602 int end_pc = start_pc + length;
1603 tree decl = build_decl (VAR_DECL, name, type);
1604 if (end_pc > DECL_CODE_LENGTH (current_function_decl))
1606 warning_with_decl (decl,
1607 "bad PC range for debug info for local `%s'");
1608 end_pc = DECL_CODE_LENGTH (current_function_decl);
1611 /* Adjust start_pc if necessary so that the local's first
1612 store operation will use the relevant DECL as a
1613 destination. Fore more information, read the leading
1614 comments for expr.c:maybe_adjust_start_pc. */
1615 start_pc = maybe_adjust_start_pc (jcf, code_offset, start_pc, slot);
1617 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (decl);
1618 DECL_LOCAL_SLOT_NUMBER (decl) = slot;
1619 DECL_LOCAL_START_PC (decl) = start_pc;
1621 /* FIXME: The range used internally for exceptions and local
1622 variable ranges, is a half-open interval:
1623 start_pc <= pc < end_pc. However, the range used in the
1624 Java VM spec is inclusive at both ends:
1625 start_pc <= pc <= end_pc. */
1628 DECL_LOCAL_END_PC (decl) = end_pc;
1630 /* Now insert the new decl in the proper place in
1631 pending_local_decls. We are essentially doing an insertion sort,
1632 which works fine, since the list input will normally already
1634 ptr = &pending_local_decls;
1635 while (*ptr != NULL_TREE
1636 && (DECL_LOCAL_START_PC (*ptr) > start_pc
1637 || (DECL_LOCAL_START_PC (*ptr) == start_pc
1638 && DECL_LOCAL_END_PC (*ptr) < end_pc)))
1639 ptr = &TREE_CHAIN (*ptr);
1640 TREE_CHAIN (decl) = *ptr;
1645 pending_local_decls = nreverse (pending_local_decls);
1647 /* Fill in default names for the parameters. */
1648 for (parm = DECL_ARGUMENTS (current_function_decl), i = 0;
1649 parm != NULL_TREE; parm = TREE_CHAIN (parm), i++)
1651 if (DECL_NAME (parm) == NULL_TREE)
1653 int arg_i = METHOD_STATIC (current_function_decl) ? i+1 : i;
1655 DECL_NAME (parm) = get_identifier ("this");
1659 sprintf (buffer, "ARG_%d", arg_i);
1660 DECL_NAME (parm) = get_identifier (buffer);
1662 SET_DECL_ASSEMBLER_NAME (parm, DECL_NAME (parm));
1668 build_result_decl (fndecl)
1671 tree restype = TREE_TYPE (TREE_TYPE (fndecl));
1672 /* To be compatible with C_PROMOTING_INTEGER_TYPE_P in cc1/cc1plus. */
1673 if (INTEGRAL_TYPE_P (restype)
1674 && TYPE_PRECISION (restype) < TYPE_PRECISION (integer_type_node))
1675 restype = integer_type_node;
1676 return (DECL_RESULT (fndecl) = build_decl (RESULT_DECL, NULL_TREE, restype));
1680 complete_start_java_method (fndecl)
1683 if (! flag_emit_class_files)
1685 /* Initialize the RTL code for the function. */
1686 init_function_start (fndecl, input_filename, lineno);
1688 /* Set up parameters and prepare for return, for the function. */
1689 expand_function_start (fndecl, 0);
1693 /* If this fcn was already referenced via a block-scope `extern' decl (or
1694 an implicit decl), propagate certain information about the usage. */
1695 if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (current_function_decl)))
1696 TREE_ADDRESSABLE (current_function_decl) = 1;
1700 if (METHOD_STATIC (fndecl) && ! METHOD_PRIVATE (fndecl)
1701 && ! flag_emit_class_files
1702 && ! DECL_CLINIT_P (fndecl)
1703 && ! CLASS_INTERFACE (TYPE_NAME (current_class)))
1705 tree clas = DECL_CONTEXT (fndecl);
1706 tree init = build (CALL_EXPR, void_type_node,
1707 build_address_of (soft_initclass_node),
1708 build_tree_list (NULL_TREE, build_class_ref (clas)),
1710 TREE_SIDE_EFFECTS (init) = 1;
1711 expand_expr_stmt (init);
1714 /* Push local variables. Function compiled from source code are
1715 using a different local variables management, and for them,
1716 pushlevel shouldn't be called from here. */
1717 if (!CLASS_FROM_SOURCE_P (DECL_CONTEXT (fndecl)))
1720 if (! flag_emit_class_files)
1721 expand_start_bindings (1);
1724 if (METHOD_SYNCHRONIZED (fndecl) && ! flag_emit_class_files)
1726 /* Wrap function body with a monitorenter plus monitorexit cleanup. */
1727 tree enter, exit, lock;
1728 if (METHOD_STATIC (fndecl))
1729 lock = build_class_ref (DECL_CONTEXT (fndecl));
1731 lock = DECL_ARGUMENTS (fndecl);
1732 BUILD_MONITOR_ENTER (enter, lock);
1733 BUILD_MONITOR_EXIT (exit, lock);
1734 if (!CLASS_FROM_SOURCE_P (DECL_CONTEXT (fndecl)))
1736 expand_expr_stmt (enter);
1737 expand_decl_cleanup (NULL_TREE, exit);
1741 tree function_body = DECL_FUNCTION_BODY (fndecl);
1742 tree body = BLOCK_EXPR_BODY (function_body);
1743 lock = build (COMPOUND_EXPR, void_type_node,
1745 build (TRY_FINALLY_EXPR, void_type_node, body, exit));
1746 TREE_SIDE_EFFECTS (lock) = 1;
1747 BLOCK_EXPR_BODY (function_body) = lock;
1753 start_java_method (fndecl)
1759 current_function_decl = fndecl;
1760 announce_function (fndecl);
1762 i = DECL_MAX_LOCALS(fndecl) + DECL_MAX_STACK(fndecl);
1763 decl_map = make_tree_vec (i);
1764 type_map = (tree *) xrealloc (type_map, i * sizeof (tree));
1766 #if defined(DEBUG_JAVA_BINDING_LEVELS)
1767 fprintf (stderr, "%s:\n", lang_printable_name (fndecl, 2));
1769 #endif /* defined(DEBUG_JAVA_BINDING_LEVELS) */
1770 pushlevel (1); /* Push parameters. */
1772 ptr = &DECL_ARGUMENTS (fndecl);
1773 for (tem = TYPE_ARG_TYPES (TREE_TYPE (fndecl)), i = 0;
1774 tem != end_params_node; tem = TREE_CHAIN (tem), i++)
1776 tree parm_name = NULL_TREE, parm_decl;
1777 tree parm_type = TREE_VALUE (tem);
1778 if (i >= DECL_MAX_LOCALS (fndecl))
1781 parm_decl = build_decl (PARM_DECL, parm_name, parm_type);
1782 DECL_CONTEXT (parm_decl) = fndecl;
1783 if (PROMOTE_PROTOTYPES
1784 && TYPE_PRECISION (parm_type) < TYPE_PRECISION (integer_type_node)
1785 && INTEGRAL_TYPE_P (parm_type))
1786 parm_type = integer_type_node;
1787 DECL_ARG_TYPE (parm_decl) = parm_type;
1790 ptr = &TREE_CHAIN (parm_decl);
1792 /* Add parm_decl to the decl_map. */
1793 push_jvm_slot (i, parm_decl);
1795 type_map[i] = TREE_TYPE (parm_decl);
1796 if (TYPE_IS_WIDE (TREE_TYPE (parm_decl)))
1799 type_map[i] = void_type_node;
1803 DECL_ARG_SLOT_COUNT (current_function_decl) = i;
1805 while (i < DECL_MAX_LOCALS(fndecl))
1806 type_map[i++] = NULL_TREE;
1808 build_result_decl (fndecl);
1809 complete_start_java_method (fndecl);
1815 tree fndecl = current_function_decl;
1817 expand_end_bindings (getdecls (), 1, 0);
1818 /* pop out of function */
1821 /* pop out of its parameters */
1824 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl;
1826 /* Generate rtl for function exit. */
1827 expand_function_end (input_filename, lineno, 0);
1829 /* Run the optimizers and output assembler code for this function. */
1830 rest_of_compilation (fndecl);
1832 current_function_decl = NULL_TREE;
1835 /* Mark language-specific parts of T for garbage-collection. */
1841 if (TREE_CODE (t) == IDENTIFIER_NODE)
1843 struct lang_identifier *li = (struct lang_identifier *) t;
1844 ggc_mark_tree (li->global_value);
1845 ggc_mark_tree (li->local_value);
1846 ggc_mark_tree (li->utf8_ref);
1848 else if (TREE_CODE (t) == VAR_DECL
1849 || TREE_CODE (t) == PARM_DECL
1850 || TREE_CODE (t) == FIELD_DECL)
1852 struct lang_decl_var *ldv =
1853 ((struct lang_decl_var *) DECL_LANG_SPECIFIC (t));
1857 ggc_mark_tree (ldv->slot_chain);
1858 ggc_mark_tree (ldv->am);
1859 ggc_mark_tree (ldv->wfl);
1862 else if (TREE_CODE (t) == FUNCTION_DECL)
1864 struct lang_decl *ld = DECL_LANG_SPECIFIC (t);
1869 ggc_mark_tree (ld->wfl);
1870 ggc_mark_tree (ld->throws_list);
1871 ggc_mark_tree (ld->function_decl_body);
1872 ggc_mark_tree (ld->called_constructor);
1873 ggc_mark_tree (ld->inner_access);
1874 ggc_mark_tree_hash_table (&ld->init_test_table);
1875 ggc_mark_tree_hash_table (&ld->ict);
1876 ggc_mark_tree (ld->smic);
1879 else if (TYPE_P (t))
1881 struct lang_type *lt = TYPE_LANG_SPECIFIC (t);
1886 ggc_mark_tree (lt->signature);
1887 ggc_mark_tree (lt->cpool_data_ref);
1888 ggc_mark_tree (lt->finit_stmt_list);
1889 ggc_mark_tree (lt->clinit_stmt_list);
1890 ggc_mark_tree (lt->ii_block);
1891 ggc_mark_tree (lt->dot_class);
1892 ggc_mark_tree (lt->package_list);