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. */
36 #include "java-tree.h"
42 #include "java-except.h"
45 #if defined (DEBUG_JAVA_BINDING_LEVELS)
46 extern void indent PROTO((void));
49 static tree push_jvm_slot PARAMS ((int, tree));
50 static tree lookup_name_current_level PARAMS ((tree));
51 static tree push_promoted_type PARAMS ((const char *, tree));
52 static struct binding_level *make_binding_level PARAMS ((void));
53 static tree create_primitive_vtable PARAMS ((const char *));
54 static tree check_local_named_variable PARAMS ((tree, tree, int, int *));
55 static tree check_local_unnamed_variable PARAMS ((tree, tree, tree));
57 /* Set to non-zero value in order to emit class initilization code
58 before static field references. */
59 extern int always_initialize_class_p;
61 /* The DECL_MAP is a mapping from (index, type) to a decl node.
62 If index < max_locals, it is the index of a local variable.
63 if index >= max_locals, then index-max_locals is a stack slot.
64 The DECL_MAP mapping is represented as a TREE_VEC whose elements
65 are a list of decls (VAR_DECL or PARM_DECL) chained by
66 DECL_LOCAL_SLOT_CHAIN; the index finds the TREE_VEC element, and then
67 we search the chain for a decl with a matching TREE_TYPE. */
69 static GTY(()) tree decl_map;
71 /* A list of local variables VAR_DECLs for this method that we have seen
72 debug information, but we have not reached their starting (byte) PC yet. */
74 static GTY(()) tree pending_local_decls;
76 /* Push a local variable or stack slot into the decl_map,
77 and assign it an rtl. */
79 #if defined(DEBUG_JAVA_BINDING_LEVELS)
80 int binding_depth = 0;
81 int is_class_level = 0;
89 for (i = 0; i < binding_depth*2; i++)
92 #endif /* defined(DEBUG_JAVA_BINDING_LEVELS) */
95 push_jvm_slot (index, decl)
99 struct rtx_def *rtl = NULL;
100 tree type = TREE_TYPE (decl);
103 DECL_CONTEXT (decl) = current_function_decl;
104 layout_decl (decl, 0);
106 /* See if we have an appropriate rtl (i.e. same mode) at this index.
107 If so, we must use it. */
108 tmp = TREE_VEC_ELT (decl_map, index);
109 while (tmp != NULL_TREE)
111 if (TYPE_MODE (type) == TYPE_MODE (TREE_TYPE (tmp)))
112 rtl = DECL_RTL_IF_SET (tmp);
115 tmp = DECL_LOCAL_SLOT_CHAIN (tmp);
118 SET_DECL_RTL (decl, rtl);
121 if (index >= DECL_MAX_LOCALS (current_function_decl))
122 DECL_REGISTER (decl) = 1;
126 /* Now link the decl into the decl_map. */
127 if (DECL_LANG_SPECIFIC (decl) == NULL)
129 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (decl);
130 DECL_LOCAL_START_PC (decl) = 0;
131 DECL_LOCAL_END_PC (decl) = DECL_CODE_LENGTH (current_function_decl);
132 DECL_LOCAL_SLOT_NUMBER (decl) = index;
134 DECL_LOCAL_SLOT_CHAIN (decl) = TREE_VEC_ELT (decl_map, index);
135 TREE_VEC_ELT (decl_map, index) = decl;
139 /* Find out if 'decl' passed in fits the defined PC location better than
140 'best'. Return decl if it does, return best if it doesn't. If decl
141 is returned, then updated is set to true. */
144 check_local_named_variable (best, decl, pc, updated)
150 if (pc >= DECL_LOCAL_START_PC (decl)
151 && pc < DECL_LOCAL_END_PC (decl))
153 if (best == NULL_TREE
154 || (DECL_LOCAL_START_PC (decl) > DECL_LOCAL_START_PC (best)
155 && DECL_LOCAL_END_PC (decl) < DECL_LOCAL_END_PC (best)))
165 /* Find the best declaration based upon type. If 'decl' fits 'type' better
166 than 'best', return 'decl'. Otherwise return 'best'. */
169 check_local_unnamed_variable (best, decl, type)
174 if (TREE_TYPE (decl) == type
175 || (TREE_CODE (TREE_TYPE (decl)) == TREE_CODE (type)
176 && TYPE_PRECISION (TREE_TYPE (decl)) <= 32
177 && TYPE_PRECISION (type) <= 32
178 && TREE_CODE (type) != POINTER_TYPE)
179 || (TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE
180 && type == ptr_type_node))
182 if (best == NULL_TREE
183 || (TREE_TYPE (decl) == type && TREE_TYPE (best) != type))
191 /* Find a VAR_DECL (or PARM_DECL) at local index INDEX that has type TYPE,
192 that is valid at PC (or -1 if any pc).
193 If there is no existing matching decl, allocate one. */
196 find_local_variable (index, type, pc)
201 tree decl = TREE_VEC_ELT (decl_map, index);
202 tree best = NULL_TREE;
203 int found_scoped_var = 0;
205 /* Scan through every declaration that has been created in this slot. */
206 while (decl != NULL_TREE)
208 /* Variables created in give_name_to_locals() have a name and have
209 a specified scope, so we can handle them specifically. We want
210 to use the specific decls created for those so they are assigned
211 the right variables in the debugging information. */
212 if (DECL_NAME (decl) != NULL_TREE)
214 /* This is a variable we have a name for, so it has a scope
215 supplied in the class file. But it only matters when we
216 actually have a PC to use. If pc<0, then we are asking
217 for a stack slot and this decl won't be one of those. */
219 best = check_local_named_variable (best, decl, pc,
222 /* We scan for type information unless we found a variable in the
223 proper scope already. */
224 else if (!found_scoped_var)
226 /* If we don't have scoping information for a variable, we use
227 a different method to look it up. */
228 best = check_local_unnamed_variable (best, decl, type);
231 decl = DECL_LOCAL_SLOT_CHAIN (decl);
234 if (best != NULL_TREE)
237 /* If we don't find a match, create one with the type passed in. */
238 return push_jvm_slot (index, build_decl (VAR_DECL, NULL_TREE, type));
242 /* Same as find_local_index, except that INDEX is a stack index. */
245 find_stack_slot (index, type)
249 return find_local_variable (index + DECL_MAX_LOCALS (current_function_decl),
255 /* A chain of _DECL nodes for all variables, constants, functions,
256 * and typedef types. These are in the reverse of the order supplied.
260 /* For each level, a list of shadowed outer-level local definitions
261 to be restored when this level is popped.
262 Each link is a TREE_LIST whose TREE_PURPOSE is an identifier and
263 whose TREE_VALUE is its old definition (a kind of ..._DECL node). */
266 /* For each level (except not the global one),
267 a chain of BLOCK nodes for all the levels
268 that were entered and exited one level down. */
271 /* The BLOCK node for this level, if one has been preallocated.
272 If 0, the BLOCK is allocated (if needed) when the level is popped. */
275 /* The binding level which this one is contained in (inherits from). */
276 struct binding_level *level_chain;
278 /* The bytecode PC that marks the end of this level. */
280 /* The bytecode PC that marks the start of this level. */
283 #if defined(DEBUG_JAVA_BINDING_LEVELS)
284 /* Binding depth at which this level began. */
285 unsigned binding_depth;
286 #endif /* defined(DEBUG_JAVA_BINDING_LEVELS) */
289 #define NULL_BINDING_LEVEL (struct binding_level *) NULL
291 /* The binding level currently in effect. */
293 static struct binding_level *current_binding_level;
295 /* A chain of binding_level structures awaiting reuse. */
297 static struct binding_level *free_binding_level;
299 /* The outermost binding level, for names of file scope.
300 This is created when the compiler is started and exists
301 through the entire run. */
303 static struct binding_level *global_binding_level;
305 /* A PC value bigger than any PC value we may ever may encounter. */
307 #define LARGEST_PC (( (unsigned int)1 << (HOST_BITS_PER_INT - 1)) - 1)
309 /* Binding level structures are initialized by copying this one. */
311 static struct binding_level clear_binding_level
312 = {NULL_TREE, NULL_TREE, NULL_TREE, NULL_TREE,
313 NULL_BINDING_LEVEL, LARGEST_PC, 0};
316 /* A list (chain of TREE_LIST nodes) of all LABEL_DECLs in the function
317 that have names. Here so we can clear out their names' definitions
318 at the end of the function. */
320 static tree named_labels;
322 /* A list of LABEL_DECLs from outer contexts that are currently shadowed. */
324 static tree shadowed_labels;
327 tree java_global_trees[JTI_MAX];
329 /* Build (and pushdecl) a "promoted type" for all standard
330 types shorter than int. */
333 push_promoted_type (name, actual_type)
337 tree type = make_node (TREE_CODE (actual_type));
339 tree in_min = TYPE_MIN_VALUE (int_type_node);
340 tree in_max = TYPE_MAX_VALUE (int_type_node);
342 tree in_min = TYPE_MIN_VALUE (actual_type);
343 tree in_max = TYPE_MAX_VALUE (actual_type);
345 TYPE_MIN_VALUE (type) = copy_node (in_min);
346 TREE_TYPE (TYPE_MIN_VALUE (type)) = type;
347 TYPE_MAX_VALUE (type) = copy_node (in_max);
348 TREE_TYPE (TYPE_MAX_VALUE (type)) = type;
349 TYPE_PRECISION (type) = TYPE_PRECISION (int_type_node);
351 pushdecl (build_decl (TYPE_DECL, get_identifier (name), type));
355 /* Return a definition for a builtin function named NAME and whose data type
356 is TYPE. TYPE should be a function type with argument types.
357 FUNCTION_CODE tells later passes how to compile calls to this function.
358 See tree.h for its possible values.
360 If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME,
361 the name to be called if we can't opencode the function. */
364 builtin_function (name, type, function_code, class, library_name)
368 enum built_in_class class;
369 const char *library_name;
371 tree decl = build_decl (FUNCTION_DECL, get_identifier (name), type);
372 DECL_EXTERNAL (decl) = 1;
373 TREE_PUBLIC (decl) = 1;
375 SET_DECL_ASSEMBLER_NAME (decl, get_identifier (library_name));
376 make_decl_rtl (decl, NULL);
378 DECL_BUILT_IN_CLASS (decl) = class;
379 DECL_FUNCTION_CODE (decl) = function_code;
383 /* Return tree that represents a vtable for a primitive array. */
385 create_primitive_vtable (name)
391 sprintf (buf, "_Jv_%sVTable", name);
392 r = build_decl (VAR_DECL, get_identifier (buf), ptr_type_node);
393 DECL_EXTERNAL (r) = 1;
398 java_init_decl_processing ()
400 register tree endlink;
401 tree field = NULL_TREE;
404 init_class_processing ();
406 current_function_decl = NULL;
407 current_binding_level = NULL_BINDING_LEVEL;
408 free_binding_level = NULL_BINDING_LEVEL;
409 pushlevel (0); /* make the binding_level structure for global names */
410 global_binding_level = current_binding_level;
412 /* The code here must be similar to build_common_tree_nodes{,_2} in
413 tree.c, especially as to the order of initializing common nodes. */
414 error_mark_node = make_node (ERROR_MARK);
415 TREE_TYPE (error_mark_node) = error_mark_node;
417 /* Create sizetype first - needed for other types. */
418 initialize_sizetypes ();
420 byte_type_node = make_signed_type (8);
421 pushdecl (build_decl (TYPE_DECL, get_identifier ("byte"), byte_type_node));
422 short_type_node = make_signed_type (16);
423 pushdecl (build_decl (TYPE_DECL, get_identifier ("short"), short_type_node));
424 int_type_node = make_signed_type (32);
425 pushdecl (build_decl (TYPE_DECL, get_identifier ("int"), int_type_node));
426 long_type_node = make_signed_type (64);
427 pushdecl (build_decl (TYPE_DECL, get_identifier ("long"), long_type_node));
429 unsigned_byte_type_node = make_unsigned_type (8);
430 pushdecl (build_decl (TYPE_DECL, get_identifier ("unsigned byte"),
431 unsigned_byte_type_node));
432 unsigned_short_type_node = make_unsigned_type (16);
433 pushdecl (build_decl (TYPE_DECL, get_identifier ("unsigned short"),
434 unsigned_short_type_node));
435 unsigned_int_type_node = make_unsigned_type (32);
436 pushdecl (build_decl (TYPE_DECL, get_identifier ("unsigned int"),
437 unsigned_int_type_node));
438 unsigned_long_type_node = make_unsigned_type (64);
439 pushdecl (build_decl (TYPE_DECL, get_identifier ("unsigned long"),
440 unsigned_long_type_node));
442 set_sizetype (make_unsigned_type (POINTER_SIZE));
444 /* Define these next since types below may used them. */
445 integer_type_node = java_type_for_size (INT_TYPE_SIZE, 0);
446 integer_zero_node = build_int_2 (0, 0);
447 integer_one_node = build_int_2 (1, 0);
448 integer_two_node = build_int_2 (2, 0);
449 integer_four_node = build_int_2 (4, 0);
450 integer_minus_one_node = build_int_2 (-1, -1);
452 size_zero_node = size_int (0);
453 size_one_node = size_int (1);
454 bitsize_zero_node = bitsize_int (0);
455 bitsize_one_node = bitsize_int (1);
456 bitsize_unit_node = bitsize_int (BITS_PER_UNIT);
458 long_zero_node = build_int_2 (0, 0);
459 TREE_TYPE (long_zero_node) = long_type_node;
461 void_type_node = make_node (VOID_TYPE);
462 pushdecl (build_decl (TYPE_DECL, get_identifier ("void"), void_type_node));
463 layout_type (void_type_node); /* Uses size_zero_node */
464 ptr_type_node = build_pointer_type (void_type_node);
465 t = make_node (VOID_TYPE);
466 layout_type (t); /* Uses size_zero_node */
467 return_address_type_node = build_pointer_type (t);
469 null_pointer_node = build_int_2 (0, 0);
470 TREE_TYPE (null_pointer_node) = ptr_type_node;
472 /* Used by the parser to represent empty statements and blocks. */
473 empty_stmt_node = build1 (NOP_EXPR, void_type_node, size_zero_node);
474 CAN_COMPLETE_NORMALLY (empty_stmt_node) = 1;
477 /* Make a type to be the domain of a few array types
478 whose domains don't really matter.
479 200 is small enough that it always fits in size_t
480 and large enough that it can hold most function names for the
481 initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */
482 short_array_type_node = build_prim_array_type (short_type_node, 200);
484 char_type_node = make_node (CHAR_TYPE);
485 TYPE_PRECISION (char_type_node) = 16;
486 fixup_unsigned_type (char_type_node);
487 pushdecl (build_decl (TYPE_DECL, get_identifier ("char"), char_type_node));
489 boolean_type_node = make_node (BOOLEAN_TYPE);
490 TYPE_PRECISION (boolean_type_node) = 1;
491 fixup_unsigned_type (boolean_type_node);
492 pushdecl (build_decl (TYPE_DECL, get_identifier ("boolean"),
494 boolean_false_node = TYPE_MIN_VALUE (boolean_type_node);
495 boolean_true_node = TYPE_MAX_VALUE (boolean_type_node);
497 promoted_byte_type_node
498 = push_promoted_type ("promoted_byte", byte_type_node);
499 promoted_short_type_node
500 = push_promoted_type ("promoted_short", short_type_node);
501 promoted_char_type_node
502 = push_promoted_type ("promoted_char", char_type_node);
503 promoted_boolean_type_node
504 = push_promoted_type ("promoted_boolean", boolean_type_node);
506 float_type_node = make_node (REAL_TYPE);
507 TYPE_PRECISION (float_type_node) = 32;
508 pushdecl (build_decl (TYPE_DECL, get_identifier ("float"),
510 layout_type (float_type_node);
512 double_type_node = make_node (REAL_TYPE);
513 TYPE_PRECISION (double_type_node) = 64;
514 pushdecl (build_decl (TYPE_DECL, get_identifier ("double"),
516 layout_type (double_type_node);
518 float_zero_node = build_real (float_type_node, dconst0);
519 double_zero_node = build_real (double_type_node, dconst0);
521 /* These are the vtables for arrays of primitives. */
522 boolean_array_vtable = create_primitive_vtable ("boolean");
523 byte_array_vtable = create_primitive_vtable ("byte");
524 char_array_vtable = create_primitive_vtable ("char");
525 short_array_vtable = create_primitive_vtable ("short");
526 int_array_vtable = create_primitive_vtable ("int");
527 long_array_vtable = create_primitive_vtable ("long");
528 float_array_vtable = create_primitive_vtable ("float");
529 double_array_vtable = create_primitive_vtable ("double");
531 /* As you're adding items here, please update the code right after
532 this section, so that the filename containing the source code of
533 the pre-defined class gets registered correctly. */
534 unqualified_object_id_node = get_identifier ("Object");
535 object_type_node = lookup_class (get_identifier ("java.lang.Object"));
536 object_ptr_type_node = promote_type (object_type_node);
537 string_type_node = lookup_class (get_identifier ("java.lang.String"));
538 string_ptr_type_node = promote_type (string_type_node);
539 class_type_node = lookup_class (get_identifier ("java.lang.Class"));
540 throwable_type_node = lookup_class (get_identifier ("java.lang.Throwable"));
541 exception_type_node = lookup_class (get_identifier ("java.lang.Exception"));
542 runtime_exception_type_node =
543 lookup_class (get_identifier ("java.lang.RuntimeException"));
544 error_exception_type_node =
545 lookup_class (get_identifier ("java.lang.Error"));
546 class_not_found_type_node =
547 lookup_class (get_identifier ("java.lang.ClassNotFoundException"));
548 no_class_def_found_type_node =
549 lookup_class (get_identifier ("java.lang.NoClassDefFoundError"));
551 rawdata_ptr_type_node
552 = promote_type (lookup_class (get_identifier ("gnu.gcj.RawData")));
554 add_predefined_file (get_identifier ("java/lang/Class.java"));
555 add_predefined_file (get_identifier ("java/lang/Error.java"));
556 add_predefined_file (get_identifier ("java/lang/Object.java"));
557 add_predefined_file (get_identifier ("java/lang/RuntimeException.java"));
558 add_predefined_file (get_identifier ("java/lang/String.java"));
559 add_predefined_file (get_identifier ("java/lang/Throwable.java"));
560 add_predefined_file (get_identifier ("gnu/gcj/RawData.java"));
561 add_predefined_file (get_identifier ("java/lang/Exception.java"));
562 add_predefined_file (get_identifier ("java/lang/ClassNotFoundException.java"));
563 add_predefined_file (get_identifier ("java/lang/NoClassDefFoundError.java"));
564 add_predefined_file (get_identifier ("gnu/gcj/RawData.java"));
566 methodtable_type = make_node (RECORD_TYPE);
567 layout_type (methodtable_type);
568 build_decl (TYPE_DECL, get_identifier ("methodtable"), methodtable_type);
569 methodtable_ptr_type = build_pointer_type (methodtable_type);
571 TYPE_identifier_node = get_identifier ("TYPE");
572 init_identifier_node = get_identifier ("<init>");
573 clinit_identifier_node = get_identifier ("<clinit>");
574 finit_identifier_node = get_identifier ("finit$");
575 instinit_identifier_node = get_identifier ("instinit$");
576 void_signature_node = get_identifier ("()V");
577 length_identifier_node = get_identifier ("length");
578 finalize_identifier_node = get_identifier ("finalize");
579 this_identifier_node = get_identifier ("this");
580 super_identifier_node = get_identifier ("super");
581 continue_identifier_node = get_identifier ("continue");
582 access0_identifier_node = get_identifier ("access$0");
583 classdollar_identifier_node = get_identifier ("class$");
585 /* for lack of a better place to put this stub call */
586 init_expr_processing();
588 utf8const_type = make_node (RECORD_TYPE);
589 PUSH_FIELD (utf8const_type, field, "hash", unsigned_short_type_node);
590 PUSH_FIELD (utf8const_type, field, "length", unsigned_short_type_node);
591 FINISH_RECORD (utf8const_type);
592 utf8const_ptr_type = build_pointer_type (utf8const_type);
594 constants_type_node = make_node (RECORD_TYPE);
595 PUSH_FIELD (constants_type_node, field, "size", unsigned_int_type_node);
596 PUSH_FIELD (constants_type_node, field, "tags", ptr_type_node);
597 PUSH_FIELD (constants_type_node, field, "data", ptr_type_node);
598 FINISH_RECORD (constants_type_node);
599 build_decl (TYPE_DECL, get_identifier ("constants"), constants_type_node);
601 access_flags_type_node = unsigned_short_type_node;
603 dtable_type = make_node (RECORD_TYPE);
604 dtable_ptr_type = build_pointer_type (dtable_type);
606 one_elt_array_domain_type = build_index_type (integer_one_node);
607 otable_type = build_array_type (integer_type_node,
608 one_elt_array_domain_type);
609 TYPE_NONALIASED_COMPONENT (otable_type) = 1;
610 otable_ptr_type = build_pointer_type (otable_type);
612 method_symbol_type = make_node (RECORD_TYPE);
613 PUSH_FIELD (method_symbol_type, field, "clname", utf8const_ptr_type);
614 PUSH_FIELD (method_symbol_type, field, "name", utf8const_ptr_type);
615 PUSH_FIELD (method_symbol_type, field, "signature", utf8const_ptr_type);
616 FINISH_RECORD (method_symbol_type);
618 method_symbols_array_type = build_array_type (method_symbol_type,
619 one_elt_array_domain_type);
620 method_symbols_array_ptr_type = build_pointer_type
621 (method_symbols_array_type);
623 otable_decl = build_decl (VAR_DECL, get_identifier ("otable"), otable_type);
624 DECL_EXTERNAL (otable_decl) = 1;
625 TREE_STATIC (otable_decl) = 1;
626 TREE_READONLY (otable_decl) = 1;
627 pushdecl (otable_decl);
629 otable_syms_decl = build_decl (VAR_DECL, get_identifier ("otable_syms"),
630 method_symbols_array_type);
631 TREE_STATIC (otable_syms_decl) = 1;
632 TREE_CONSTANT (otable_syms_decl) = 1;
633 pushdecl (otable_syms_decl);
635 PUSH_FIELD (object_type_node, field, "vtable", dtable_ptr_type);
636 /* This isn't exactly true, but it is what we have in the source.
637 There is an unresolved issue here, which is whether the vtable
638 should be marked by the GC. */
639 if (! flag_hash_synchronization)
640 PUSH_FIELD (object_type_node, field, "sync_info",
641 build_pointer_type (object_type_node));
642 for (t = TYPE_FIELDS (object_type_node); t != NULL_TREE; t = TREE_CHAIN (t))
643 FIELD_PRIVATE (t) = 1;
644 FINISH_RECORD (object_type_node);
646 field_type_node = make_node (RECORD_TYPE);
647 field_ptr_type_node = build_pointer_type (field_type_node);
648 method_type_node = make_node (RECORD_TYPE);
649 method_ptr_type_node = build_pointer_type (method_type_node);
651 set_super_info (0, class_type_node, object_type_node, 0);
652 set_super_info (0, string_type_node, object_type_node, 0);
653 class_ptr_type = build_pointer_type (class_type_node);
655 PUSH_FIELD (class_type_node, field, "next", class_ptr_type);
656 PUSH_FIELD (class_type_node, field, "name", utf8const_ptr_type);
657 PUSH_FIELD (class_type_node, field, "accflags", access_flags_type_node);
658 PUSH_FIELD (class_type_node, field, "superclass", class_ptr_type);
659 PUSH_FIELD (class_type_node, field, "constants", constants_type_node);
660 PUSH_FIELD (class_type_node, field, "methods", method_ptr_type_node);
661 PUSH_FIELD (class_type_node, field, "method_count", short_type_node);
662 PUSH_FIELD (class_type_node, field, "vtable_method_count", short_type_node);
663 PUSH_FIELD (class_type_node, field, "fields", field_ptr_type_node);
664 PUSH_FIELD (class_type_node, field, "size_in_bytes", int_type_node);
665 PUSH_FIELD (class_type_node, field, "field_count", short_type_node);
666 PUSH_FIELD (class_type_node, field, "static_field_count", short_type_node);
667 PUSH_FIELD (class_type_node, field, "vtable", dtable_ptr_type);
668 PUSH_FIELD (class_type_node, field, "otable", otable_ptr_type);
669 PUSH_FIELD (class_type_node, field, "otable_syms",
670 method_symbols_array_ptr_type);
671 PUSH_FIELD (class_type_node, field, "interfaces",
672 build_pointer_type (class_ptr_type));
673 PUSH_FIELD (class_type_node, field, "loader", ptr_type_node);
674 PUSH_FIELD (class_type_node, field, "interface_count", short_type_node);
675 PUSH_FIELD (class_type_node, field, "state", byte_type_node);
676 PUSH_FIELD (class_type_node, field, "thread", ptr_type_node);
677 PUSH_FIELD (class_type_node, field, "depth", short_type_node);
678 PUSH_FIELD (class_type_node, field, "ancestors", ptr_type_node);
679 PUSH_FIELD (class_type_node, field, "idt", ptr_type_node);
680 PUSH_FIELD (class_type_node, field, "arrayclass", ptr_type_node);
681 PUSH_FIELD (class_type_node, field, "protectionDomain", ptr_type_node);
682 for (t = TYPE_FIELDS (class_type_node); t != NULL_TREE; t = TREE_CHAIN (t))
683 FIELD_PRIVATE (t) = 1;
684 push_super_field (class_type_node, object_type_node);
686 FINISH_RECORD (class_type_node);
687 build_decl (TYPE_DECL, get_identifier ("Class"), class_type_node);
689 field_info_union_node = make_node (UNION_TYPE);
690 PUSH_FIELD (field_info_union_node, field, "boffset", int_type_node);
691 PUSH_FIELD (field_info_union_node, field, "addr", ptr_type_node);
693 PUSH_FIELD (field_info_union_node, field, "idx", unsigned_short_type_node);
695 layout_type (field_info_union_node);
697 PUSH_FIELD (field_type_node, field, "name", utf8const_ptr_type);
698 PUSH_FIELD (field_type_node, field, "type", class_ptr_type);
699 PUSH_FIELD (field_type_node, field, "accflags", access_flags_type_node);
700 PUSH_FIELD (field_type_node, field, "bsize", unsigned_short_type_node);
701 PUSH_FIELD (field_type_node, field, "info", field_info_union_node);
702 FINISH_RECORD (field_type_node);
703 build_decl (TYPE_DECL, get_identifier ("Field"), field_type_node);
705 nativecode_ptr_array_type_node
706 = build_array_type (nativecode_ptr_type_node, one_elt_array_domain_type);
708 PUSH_FIELD (dtable_type, field, "class", class_ptr_type);
709 PUSH_FIELD (dtable_type, field, "methods", nativecode_ptr_array_type_node);
710 FINISH_RECORD (dtable_type);
711 build_decl (TYPE_DECL, get_identifier ("dispatchTable"), dtable_type);
713 #define jint_type int_type_node
714 #define jint_ptr_type ptr_type_node
716 jexception_type = make_node (RECORD_TYPE);
717 PUSH_FIELD (jexception_type, field, "start_pc", ptr_type_node);
718 PUSH_FIELD (jexception_type, field, "end_pc", ptr_type_node);
719 PUSH_FIELD (jexception_type, field, "handler_pc", ptr_type_node);
720 PUSH_FIELD (jexception_type, field, "catch_type", class_ptr_type);
721 FINISH_RECORD (jexception_type);
722 build_decl (TYPE_DECL, get_identifier ("jexception"), field_type_node);
723 jexception_ptr_type = build_pointer_type (jexception_type);
725 lineNumberEntry_type = make_node (RECORD_TYPE);
726 PUSH_FIELD (lineNumberEntry_type, field, "line_nr", unsigned_short_type_node);
727 PUSH_FIELD (lineNumberEntry_type, field, "start_pc", ptr_type_node);
728 FINISH_RECORD (lineNumberEntry_type);
730 lineNumbers_type = make_node (RECORD_TYPE);
731 PUSH_FIELD (lineNumbers_type, field, "length", unsigned_int_type_node);
732 FINISH_RECORD (lineNumbers_type);
734 #define instn_ptr_type_node ptr_type_node /* XXX JH */
736 #define lineNumbers_ptr_type_node build_pointer_type(lineNumbers_type)
738 PUSH_FIELD (method_type_node, field, "name", utf8const_ptr_type);
739 PUSH_FIELD (method_type_node, field, "signature", utf8const_ptr_type);
740 PUSH_FIELD (method_type_node, field, "accflags", access_flags_type_node);
741 PUSH_FIELD (method_type_node, field, "index", unsigned_short_type_node);
742 PUSH_FIELD (method_type_node, field, "ncode", nativecode_ptr_type_node);
743 PUSH_FIELD (method_type_node, field, "throws", ptr_type_node);
744 FINISH_RECORD (method_type_node);
745 build_decl (TYPE_DECL, get_identifier ("Method"), method_type_node);
747 endlink = end_params_node = tree_cons (NULL_TREE, void_type_node, NULL_TREE);
749 t = tree_cons (NULL_TREE, class_ptr_type,
750 tree_cons (NULL_TREE, int_type_node, endlink));
751 alloc_object_node = builtin_function ("_Jv_AllocObject",
752 build_function_type (ptr_type_node, t),
753 0, NOT_BUILT_IN, NULL);
754 DECL_IS_MALLOC (alloc_object_node) = 1;
755 alloc_no_finalizer_node =
756 builtin_function ("_Jv_AllocObjectNoFinalizer",
757 build_function_type (ptr_type_node, t),
758 0, NOT_BUILT_IN, NULL);
759 DECL_IS_MALLOC (alloc_no_finalizer_node) = 1;
761 t = tree_cons (NULL_TREE, ptr_type_node, endlink);
762 soft_initclass_node = builtin_function ("_Jv_InitClass",
763 build_function_type (void_type_node,
765 0, NOT_BUILT_IN, NULL);
767 throw_node = builtin_function ("_Jv_Throw",
768 build_function_type (ptr_type_node, t),
769 0, NOT_BUILT_IN, NULL);
770 /* Mark throw_nodes as `noreturn' functions with side effects. */
771 TREE_THIS_VOLATILE (throw_node) = 1;
772 TREE_SIDE_EFFECTS (throw_node) = 1;
774 t = build_function_type (int_type_node, endlink);
775 soft_monitorenter_node
776 = builtin_function ("_Jv_MonitorEnter", t, 0, NOT_BUILT_IN, NULL);
777 soft_monitorexit_node
778 = builtin_function ("_Jv_MonitorExit", t, 0, NOT_BUILT_IN, NULL);
780 t = tree_cons (NULL_TREE, int_type_node,
781 tree_cons (NULL_TREE, int_type_node, endlink));
783 = builtin_function ("_Jv_NewPrimArray",
784 build_function_type(ptr_type_node, t),
785 0, NOT_BUILT_IN, NULL);
786 DECL_IS_MALLOC (soft_newarray_node) = 1;
788 t = tree_cons (NULL_TREE, int_type_node,
789 tree_cons (NULL_TREE, class_ptr_type,
790 tree_cons (NULL_TREE, object_ptr_type_node, endlink)));
792 = builtin_function ("_Jv_NewObjectArray",
793 build_function_type (ptr_type_node, t),
794 0, NOT_BUILT_IN, NULL);
795 DECL_IS_MALLOC (soft_anewarray_node) = 1;
797 t = tree_cons (NULL_TREE, ptr_type_node,
798 tree_cons (NULL_TREE, int_type_node, endlink));
799 soft_multianewarray_node
800 = builtin_function ("_Jv_NewMultiArray",
801 build_function_type (ptr_type_node, t),
802 0, NOT_BUILT_IN, NULL);
803 DECL_IS_MALLOC (soft_multianewarray_node) = 1;
805 t = build_function_type (void_type_node,
806 tree_cons (NULL_TREE, int_type_node, endlink));
807 soft_badarrayindex_node
808 = builtin_function ("_Jv_ThrowBadArrayIndex", t,
809 0, NOT_BUILT_IN, NULL);
810 /* Mark soft_badarrayindex_node as a `noreturn' function with side
812 TREE_THIS_VOLATILE (soft_badarrayindex_node) = 1;
813 TREE_SIDE_EFFECTS (soft_badarrayindex_node) = 1;
815 soft_nullpointer_node
816 = builtin_function ("_Jv_ThrowNullPointerException",
817 build_function_type (void_type_node, endlink),
818 0, NOT_BUILT_IN, NULL);
819 /* Mark soft_nullpointer_node as a `noreturn' function with side
821 TREE_THIS_VOLATILE (soft_nullpointer_node) = 1;
822 TREE_SIDE_EFFECTS (soft_nullpointer_node) = 1;
824 t = tree_cons (NULL_TREE, class_ptr_type,
825 tree_cons (NULL_TREE, object_ptr_type_node, endlink));
827 = builtin_function ("_Jv_CheckCast",
828 build_function_type (ptr_type_node, t),
829 0, NOT_BUILT_IN, NULL);
830 t = tree_cons (NULL_TREE, object_ptr_type_node,
831 tree_cons (NULL_TREE, class_ptr_type, endlink));
833 = builtin_function ("_Jv_IsInstanceOf",
834 build_function_type (boolean_type_node, t),
835 0, NOT_BUILT_IN, NULL);
836 t = tree_cons (NULL_TREE, object_ptr_type_node,
837 tree_cons (NULL_TREE, object_ptr_type_node, endlink));
838 soft_checkarraystore_node
839 = builtin_function ("_Jv_CheckArrayStore",
840 build_function_type (void_type_node, t),
841 0, NOT_BUILT_IN, NULL);
842 t = tree_cons (NULL_TREE, ptr_type_node,
843 tree_cons (NULL_TREE, ptr_type_node,
844 tree_cons (NULL_TREE, int_type_node, endlink)));
845 soft_lookupinterfacemethod_node
846 = builtin_function ("_Jv_LookupInterfaceMethodIdx",
847 build_function_type (ptr_type_node, t),
848 0, NOT_BUILT_IN, NULL);
850 t = tree_cons (NULL_TREE, object_ptr_type_node,
851 tree_cons (NULL_TREE, ptr_type_node,
852 tree_cons (NULL_TREE, ptr_type_node, endlink)));
853 soft_lookupjnimethod_node
854 = builtin_function ("_Jv_LookupJNIMethod",
855 build_function_type (ptr_type_node, t),
856 0, NOT_BUILT_IN, NULL);
857 t = tree_cons (NULL_TREE, ptr_type_node, endlink);
858 soft_getjnienvnewframe_node
859 = builtin_function ("_Jv_GetJNIEnvNewFrame",
860 build_function_type (ptr_type_node, t),
861 0, NOT_BUILT_IN, NULL);
862 soft_jnipopsystemframe_node
863 = builtin_function ("_Jv_JNI_PopSystemFrame",
864 build_function_type (ptr_type_node, t),
865 0, NOT_BUILT_IN, NULL);
867 t = tree_cons (NULL_TREE, double_type_node,
868 tree_cons (NULL_TREE, double_type_node, endlink));
870 = builtin_function ("__builtin_fmod",
871 build_function_type (double_type_node, t),
872 BUILT_IN_FMOD, BUILT_IN_NORMAL, "fmod");
875 t = tree_cons (NULL_TREE, float_type_node,
876 tree_cons (NULL_TREE, float_type_node, endlink));
878 = builtin_function ("__builtin_fmodf",
879 build_function_type (float_type_node, t),
880 BUILT_IN_FMOD, BUILT_IN_NORMAL, "fmodf");
884 = builtin_function ("_Jv_divI",
885 build_function_type (int_type_node, t),
886 0, NOT_BUILT_IN, NULL);
889 = builtin_function ("_Jv_remI",
890 build_function_type (int_type_node, t),
891 0, NOT_BUILT_IN, NULL);
894 = builtin_function ("_Jv_divJ",
895 build_function_type (long_type_node, t),
896 0, NOT_BUILT_IN, NULL);
899 = builtin_function ("_Jv_remJ",
900 build_function_type (long_type_node, t),
901 0, NOT_BUILT_IN, NULL);
903 /* Initialize variables for except.c. */
904 eh_personality_libfunc = init_one_libfunc (USING_SJLJ_EXCEPTIONS
905 ? "__gcj_personality_sj0"
906 : "__gcj_personality_v0");
907 lang_eh_runtime_type = prepare_eh_table_type;
911 initialize_builtins ();
915 /* Look up NAME in the current binding level and its superiors
916 in the namespace of variables, functions and typedefs.
917 Return a ..._DECL node of some kind representing its definition,
918 or return 0 if it is undefined. */
925 if (current_binding_level != global_binding_level
926 && IDENTIFIER_LOCAL_VALUE (name))
927 val = IDENTIFIER_LOCAL_VALUE (name);
929 val = IDENTIFIER_GLOBAL_VALUE (name);
933 /* Similar to `lookup_name' but look only at current binding level and
934 the previous one if its the parameter level. */
937 lookup_name_current_level (name)
942 if (current_binding_level == global_binding_level)
943 return IDENTIFIER_GLOBAL_VALUE (name);
945 if (IDENTIFIER_LOCAL_VALUE (name) == 0)
948 for (t = current_binding_level->names; t; t = TREE_CHAIN (t))
949 if (DECL_NAME (t) == name)
955 /* Use a binding level to record a labeled block declaration */
958 push_labeled_block (lb)
961 register tree name = DECL_NAME (LABELED_BLOCK_LABEL (lb));
962 register struct binding_level *b = current_binding_level;
963 tree oldlocal = IDENTIFIER_LOCAL_VALUE (name);
965 b->shadowed = tree_cons (name, oldlocal, b->shadowed);
966 TREE_CHAIN (lb) = b->names;
968 IDENTIFIER_LOCAL_VALUE (name) = lb;
971 /* Pop the current binding level, reinstalling values for the previous
977 struct binding_level *b = current_binding_level;
978 tree label = b->names;
979 IDENTIFIER_LOCAL_VALUE (DECL_NAME (LABELED_BLOCK_LABEL (label))) =
982 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (b->shadowed)) =
983 TREE_VALUE (b->shadowed);
985 /* Pop the current level, and free the structure for reuse. */
986 current_binding_level = current_binding_level->level_chain;
987 b->level_chain = free_binding_level;
988 free_binding_level = b;
991 /* Record a decl-node X as belonging to the current lexical scope.
992 Check for errors (such as an incompatible declaration for the same
993 name already seen in the same scope).
995 Returns either X or an old decl for the same name.
996 If an old decl is returned, it may have been smashed
997 to agree with what X says. */
1004 register tree name = DECL_NAME (x);
1005 register struct binding_level *b = current_binding_level;
1007 if (TREE_CODE (x) != TYPE_DECL)
1008 DECL_CONTEXT (x) = current_function_decl;
1014 t = lookup_name_current_level (name);
1015 if (t != 0 && t == error_mark_node)
1016 /* error_mark_node is 0 for a while during initialization! */
1019 error_with_decl (x, "`%s' used prior to declaration");
1024 file = DECL_SOURCE_FILE (t);
1025 line = DECL_SOURCE_LINE (t);
1028 /* If we're naming a hitherto-unnamed type, set its TYPE_NAME
1029 to point to the TYPE_DECL.
1030 Since Java does not have typedefs, a type can only have
1031 one (true) name, given by a class, interface, or builtin. */
1032 if (TREE_CODE (x) == TYPE_DECL
1033 && TYPE_NAME (TREE_TYPE (x)) == 0
1034 && TREE_TYPE (x) != error_mark_node)
1036 TYPE_NAME (TREE_TYPE (x)) = x;
1037 TYPE_STUB_DECL (TREE_TYPE (x)) = x;
1040 /* This name is new in its binding level.
1041 Install the new declaration and return it. */
1042 if (b == global_binding_level)
1044 /* Install a global value. */
1046 IDENTIFIER_GLOBAL_VALUE (name) = x;
1050 /* Here to install a non-global value. */
1051 tree oldlocal = IDENTIFIER_LOCAL_VALUE (name);
1052 IDENTIFIER_LOCAL_VALUE (name) = x;
1055 /* Warn if shadowing an argument at the top level of the body. */
1056 if (oldlocal != 0 && !DECL_EXTERNAL (x)
1057 /* This warning doesn't apply to the parms of a nested fcn. */
1058 && ! current_binding_level->parm_flag
1059 /* Check that this is one level down from the parms. */
1060 && current_binding_level->level_chain->parm_flag
1061 /* Check that the decl being shadowed
1062 comes from the parm level, one level up. */
1063 && chain_member (oldlocal, current_binding_level->level_chain->names))
1065 if (TREE_CODE (oldlocal) == PARM_DECL)
1066 pedwarn ("declaration of `%s' shadows a parameter",
1067 IDENTIFIER_POINTER (name));
1069 pedwarn ("declaration of `%s' shadows a symbol from the parameter list",
1070 IDENTIFIER_POINTER (name));
1073 /* Maybe warn if shadowing something else. */
1074 else if (warn_shadow && !DECL_EXTERNAL (x)
1075 /* No shadow warnings for internally generated vars. */
1076 && DECL_SOURCE_LINE (x) != 0
1077 /* No shadow warnings for vars made for inlining. */
1078 && ! DECL_FROM_INLINE (x))
1080 const char *warnstring = 0;
1082 if (TREE_CODE (x) == PARM_DECL
1083 && current_binding_level->level_chain->parm_flag)
1084 /* Don't warn about the parm names in function declarator
1085 within a function declarator.
1086 It would be nice to avoid warning in any function
1087 declarator in a declaration, as opposed to a definition,
1088 but there is no way to tell it's not a definition. */
1090 else if (oldlocal != 0 && TREE_CODE (oldlocal) == PARM_DECL)
1091 warnstring = "declaration of `%s' shadows a parameter";
1092 else if (oldlocal != 0)
1093 warnstring = "declaration of `%s' shadows previous local";
1094 else if (IDENTIFIER_GLOBAL_VALUE (name) != 0
1095 && IDENTIFIER_GLOBAL_VALUE (name) != error_mark_node)
1096 warnstring = "declaration of `%s' shadows global declaration";
1099 warning (warnstring, IDENTIFIER_POINTER (name));
1103 /* If storing a local value, there may already be one (inherited).
1104 If so, record it for restoration when this binding level ends. */
1106 b->shadowed = tree_cons (name, oldlocal, b->shadowed);
1110 /* Put decls on list in reverse order.
1111 We will reverse them later if necessary. */
1112 TREE_CHAIN (x) = b->names;
1119 pushdecl_force_head (x)
1122 current_binding_level->names = x;
1125 /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL, if appropriate. */
1128 pushdecl_top_level (x)
1132 register struct binding_level *b = current_binding_level;
1134 current_binding_level = global_binding_level;
1136 current_binding_level = b;
1140 /* Nonzero if we are currently in the global binding level. */
1143 global_bindings_p ()
1145 return current_binding_level == global_binding_level;
1148 /* Return the list of declarations of the current level.
1149 Note that this list is in reverse order unless/until
1150 you nreverse it; and when you do nreverse it, you must
1151 store the result back using `storedecls' or you will lose. */
1156 return current_binding_level->names;
1159 /* Create a new `struct binding_level'. */
1161 static struct binding_level *
1162 make_binding_level ()
1165 return (struct binding_level *) xmalloc (sizeof (struct binding_level));
1170 int unused ATTRIBUTE_UNUSED;
1172 register struct binding_level *newlevel = NULL_BINDING_LEVEL;
1175 /* If this is the top level of a function,
1176 just make sure that NAMED_LABELS is 0. */
1178 if (current_binding_level == global_binding_level)
1182 /* Reuse or create a struct for this binding level. */
1184 if (free_binding_level)
1186 newlevel = free_binding_level;
1187 free_binding_level = free_binding_level->level_chain;
1191 newlevel = make_binding_level ();
1194 /* Add this level to the front of the chain (stack) of levels that
1197 *newlevel = clear_binding_level;
1198 newlevel->level_chain = current_binding_level;
1199 current_binding_level = newlevel;
1200 #if defined(DEBUG_JAVA_BINDING_LEVELS)
1201 newlevel->binding_depth = binding_depth;
1203 fprintf (stderr, "push %s level 0x%08x pc %d\n",
1204 (is_class_level) ? "class" : "block", newlevel, current_pc);
1207 #endif /* defined(DEBUG_JAVA_BINDING_LEVELS) */
1210 /* Exit a binding level.
1211 Pop the level off, and restore the state of the identifier-decl mappings
1212 that were in effect when this level was entered.
1214 If KEEP is nonzero, this level had explicit declarations, so
1215 and create a "block" (a BLOCK node) for the level
1216 to record its declarations and subblocks for symbol table output.
1218 If FUNCTIONBODY is nonzero, this level is the body of a function,
1219 so create a block as if KEEP were set and also clear out all
1222 If REVERSE is nonzero, reverse the order of decls before putting
1223 them into the BLOCK. */
1226 poplevel (keep, reverse, functionbody)
1232 /* The chain of decls was accumulated in reverse order.
1233 Put it into forward order, just for cleanliness. */
1235 tree subblocks = current_binding_level->blocks;
1238 int block_previously_created;
1240 #if defined(DEBUG_JAVA_BINDING_LEVELS)
1243 if (current_binding_level->end_pc != LARGEST_PC)
1244 fprintf (stderr, "pop %s level 0x%08x pc %d (end pc %d)\n",
1245 (is_class_level) ? "class" : "block", current_binding_level, current_pc,
1246 current_binding_level->end_pc);
1248 fprintf (stderr, "pop %s level 0x%08x pc %d\n",
1249 (is_class_level) ? "class" : "block", current_binding_level, current_pc);
1251 if (is_class_level != (current_binding_level == class_binding_level))
1254 fprintf (stderr, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
1258 #endif /* defined(DEBUG_JAVA_BINDING_LEVELS) */
1260 /* Get the decls in the order they were written.
1261 Usually current_binding_level->names is in reverse order.
1262 But parameter decls were previously put in forward order. */
1265 current_binding_level->names
1266 = decls = nreverse (current_binding_level->names);
1268 decls = current_binding_level->names;
1270 /* Output any nested inline functions within this block
1271 if they weren't already output. */
1273 for (decl = decls; decl; decl = TREE_CHAIN (decl))
1274 if (TREE_CODE (decl) == FUNCTION_DECL
1275 && ! TREE_ASM_WRITTEN (decl)
1276 && DECL_INITIAL (decl) != 0
1277 && TREE_ADDRESSABLE (decl))
1279 /* If this decl was copied from a file-scope decl
1280 on account of a block-scope extern decl,
1281 propagate TREE_ADDRESSABLE to the file-scope decl.
1283 DECL_ABSTRACT_ORIGIN can be set to itself if warn_return_type is
1284 true, since then the decl goes through save_for_inline_copying. */
1285 if (DECL_ABSTRACT_ORIGIN (decl) != 0
1286 && DECL_ABSTRACT_ORIGIN (decl) != decl)
1287 TREE_ADDRESSABLE (DECL_ABSTRACT_ORIGIN (decl)) = 1;
1290 push_function_context ();
1291 output_inline_function (decl);
1292 pop_function_context ();
1296 /* If there were any declarations in that level,
1297 or if this level is a function body,
1298 create a BLOCK to record them for the life of this function. */
1301 block_previously_created = (current_binding_level->this_block != 0);
1302 if (block_previously_created)
1303 block = current_binding_level->this_block;
1304 else if (keep || functionbody)
1305 block = make_node (BLOCK);
1308 BLOCK_VARS (block) = decls;
1309 BLOCK_SUBBLOCKS (block) = subblocks;
1312 /* In each subblock, record that this is its superior. */
1314 for (link = subblocks; link; link = TREE_CHAIN (link))
1315 BLOCK_SUPERCONTEXT (link) = block;
1317 /* Clear out the meanings of the local variables of this level. */
1319 for (link = decls; link; link = TREE_CHAIN (link))
1321 tree name = DECL_NAME (link);
1322 if (name != 0 && IDENTIFIER_LOCAL_VALUE (name) == link)
1324 /* If the ident. was used or addressed via a local extern decl,
1325 don't forget that fact. */
1326 if (DECL_EXTERNAL (link))
1328 if (TREE_USED (link))
1329 TREE_USED (name) = 1;
1330 if (TREE_ADDRESSABLE (link))
1331 TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (link)) = 1;
1333 IDENTIFIER_LOCAL_VALUE (name) = 0;
1337 /* Restore all name-meanings of the outer levels
1338 that were shadowed by this level. */
1340 for (link = current_binding_level->shadowed; link; link = TREE_CHAIN (link))
1341 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
1343 /* If the level being exited is the top level of a function,
1344 check over all the labels, and clear out the current
1345 (function local) meanings of their names. */
1349 /* If this is the top level block of a function,
1350 the vars are the function's parameters.
1351 Don't leave them in the BLOCK because they are
1352 found in the FUNCTION_DECL instead. */
1354 BLOCK_VARS (block) = 0;
1356 /* Clear out the definitions of all label names,
1357 since their scopes end here,
1358 and add them to BLOCK_VARS. */
1361 for (link = named_labels; link; link = TREE_CHAIN (link))
1363 register tree label = TREE_VALUE (link);
1365 if (DECL_INITIAL (label) == 0)
1367 error_with_decl (label, "label `%s' used but not defined");
1368 /* Avoid crashing later. */
1369 define_label (input_filename, lineno,
1372 else if (warn_unused[UNUSED_LABEL] && !TREE_USED (label))
1373 warning_with_decl (label, "label `%s' defined but not used");
1374 IDENTIFIER_LABEL_VALUE (DECL_NAME (label)) = 0;
1376 /* Put the labels into the "variables" of the
1377 top-level block, so debugger can see them. */
1378 TREE_CHAIN (label) = BLOCK_VARS (block);
1379 BLOCK_VARS (block) = label;
1384 /* Pop the current level, and free the structure for reuse. */
1387 register struct binding_level *level = current_binding_level;
1388 current_binding_level = current_binding_level->level_chain;
1390 level->level_chain = free_binding_level;
1391 free_binding_level = level;
1394 /* Dispose of the block that we just made inside some higher level. */
1396 DECL_INITIAL (current_function_decl) = block;
1399 if (!block_previously_created)
1400 current_binding_level->blocks
1401 = chainon (current_binding_level->blocks, block);
1403 /* If we did not make a block for the level just exited,
1404 any blocks made for inner levels
1405 (since they cannot be recorded as subblocks in that level)
1406 must be carried forward so they will later become subblocks
1407 of something else. */
1409 current_binding_level->blocks
1410 = chainon (current_binding_level->blocks, subblocks);
1412 /* Set the TYPE_CONTEXTs for all of the tagged types belonging to this
1413 binding contour so that they point to the appropriate construct, i.e.
1414 either to the current FUNCTION_DECL node, or else to the BLOCK node
1415 we just constructed.
1417 Note that for tagged types whose scope is just the formal parameter
1418 list for some function type specification, we can't properly set
1419 their TYPE_CONTEXTs here, because we don't have a pointer to the
1420 appropriate FUNCTION_TYPE node readily available to us. For those
1421 cases, the TYPE_CONTEXTs of the relevant tagged type nodes get set
1422 in `grokdeclarator' as soon as we have created the FUNCTION_TYPE
1423 node which will represent the "scope" for these "parameter list local"
1428 TREE_USED (block) = 1;
1433 maybe_pushlevels (pc)
1436 #if defined(DEBUG_JAVA_BINDING_LEVELS)
1440 while (pending_local_decls != NULL_TREE &&
1441 DECL_LOCAL_START_PC (pending_local_decls) <= pc)
1443 tree *ptr = &pending_local_decls;
1445 int end_pc = DECL_LOCAL_END_PC (decl);
1447 while (*ptr != NULL_TREE
1448 && DECL_LOCAL_START_PC (*ptr) <= pc
1449 && DECL_LOCAL_END_PC (*ptr) == end_pc)
1450 ptr = &TREE_CHAIN (*ptr);
1451 pending_local_decls = *ptr;
1454 /* Force non-nested range to be nested in current range. */
1455 if (end_pc > current_binding_level->end_pc)
1456 end_pc = current_binding_level->end_pc;
1458 maybe_start_try (pc, end_pc);
1461 expand_start_bindings (0);
1463 current_binding_level->end_pc = end_pc;
1464 current_binding_level->start_pc = pc;
1465 current_binding_level->names = decl;
1466 for ( ; decl != NULL_TREE; decl = TREE_CHAIN (decl))
1468 push_jvm_slot (DECL_LOCAL_SLOT_NUMBER (decl), decl);
1472 maybe_start_try (pc, 0);
1476 maybe_poplevels (pc)
1479 #if defined(DEBUG_JAVA_BINDING_LEVELS)
1483 while (current_binding_level->end_pc <= pc)
1485 expand_end_bindings (getdecls (), 1, 0);
1486 maybe_end_try (current_binding_level->start_pc, pc);
1489 maybe_end_try (0, pc);
1492 /* Terminate any binding which began during the range beginning at
1493 start_pc. This tidies up improperly nested local variable ranges
1494 and exception handlers; a variable declared within an exception
1495 range is forcibly terminated when that exception ends. */
1498 force_poplevels (start_pc)
1501 while (current_binding_level->start_pc > start_pc)
1503 if (pedantic && current_binding_level->start_pc > start_pc)
1504 warning_with_decl (current_function_decl,
1505 "In %s: overlapped variable and exception ranges at %d",
1506 current_binding_level->start_pc);
1507 expand_end_bindings (getdecls (), 1, 0);
1512 /* Insert BLOCK at the end of the list of subblocks of the
1513 current binding level. This is used when a BIND_EXPR is expanded,
1514 to handle the BLOCK node inside the BIND_EXPR. */
1517 insert_block (block)
1520 TREE_USED (block) = 1;
1521 current_binding_level->blocks
1522 = chainon (current_binding_level->blocks, block);
1525 /* Set the BLOCK node for the innermost scope
1526 (the one we are currently in). */
1530 register tree block;
1532 current_binding_level->this_block = block;
1533 current_binding_level->names = chainon (current_binding_level->names,
1534 BLOCK_VARS (block));
1535 current_binding_level->blocks = chainon (current_binding_level->blocks,
1536 BLOCK_SUBBLOCKS (block));
1539 /* integrate_decl_tree calls this function. */
1542 java_dup_lang_specific_decl (node)
1546 struct lang_decl *x;
1548 if (!DECL_LANG_SPECIFIC (node))
1551 lang_decl_size = sizeof (struct lang_decl);
1552 x = (struct lang_decl *) ggc_alloc (lang_decl_size);
1553 memcpy (x, DECL_LANG_SPECIFIC (node), lang_decl_size);
1554 DECL_LANG_SPECIFIC (node) = x;
1558 give_name_to_locals (jcf)
1561 int i, n = DECL_LOCALVARIABLES_OFFSET (current_function_decl);
1562 int code_offset = DECL_CODE_OFFSET (current_function_decl);
1564 pending_local_decls = NULL_TREE;
1568 n = JCF_readu2 (jcf);
1569 for (i = 0; i < n; i++)
1571 int start_pc = JCF_readu2 (jcf);
1572 int length = JCF_readu2 (jcf);
1573 int name_index = JCF_readu2 (jcf);
1574 int signature_index = JCF_readu2 (jcf);
1575 int slot = JCF_readu2 (jcf);
1576 tree name = get_name_constant (jcf, name_index);
1577 tree type = parse_signature (jcf, signature_index);
1578 if (slot < DECL_ARG_SLOT_COUNT (current_function_decl)
1580 && length == DECL_CODE_LENGTH (current_function_decl))
1582 tree decl = TREE_VEC_ELT (decl_map, slot);
1583 DECL_NAME (decl) = name;
1584 SET_DECL_ASSEMBLER_NAME (decl, name);
1585 if (TREE_CODE (decl) != PARM_DECL || TREE_TYPE (decl) != type)
1586 warning ("bad type in parameter debug info");
1591 int end_pc = start_pc + length;
1592 tree decl = build_decl (VAR_DECL, name, type);
1593 if (end_pc > DECL_CODE_LENGTH (current_function_decl))
1595 warning_with_decl (decl,
1596 "bad PC range for debug info for local `%s'");
1597 end_pc = DECL_CODE_LENGTH (current_function_decl);
1600 /* Adjust start_pc if necessary so that the local's first
1601 store operation will use the relevant DECL as a
1602 destination. Fore more information, read the leading
1603 comments for expr.c:maybe_adjust_start_pc. */
1604 start_pc = maybe_adjust_start_pc (jcf, code_offset, start_pc, slot);
1606 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (decl);
1607 DECL_LOCAL_SLOT_NUMBER (decl) = slot;
1608 DECL_LOCAL_START_PC (decl) = start_pc;
1610 /* FIXME: The range used internally for exceptions and local
1611 variable ranges, is a half-open interval:
1612 start_pc <= pc < end_pc. However, the range used in the
1613 Java VM spec is inclusive at both ends:
1614 start_pc <= pc <= end_pc. */
1617 DECL_LOCAL_END_PC (decl) = end_pc;
1619 /* Now insert the new decl in the proper place in
1620 pending_local_decls. We are essentially doing an insertion sort,
1621 which works fine, since the list input will normally already
1623 ptr = &pending_local_decls;
1624 while (*ptr != NULL_TREE
1625 && (DECL_LOCAL_START_PC (*ptr) > start_pc
1626 || (DECL_LOCAL_START_PC (*ptr) == start_pc
1627 && DECL_LOCAL_END_PC (*ptr) < end_pc)))
1628 ptr = &TREE_CHAIN (*ptr);
1629 TREE_CHAIN (decl) = *ptr;
1634 pending_local_decls = nreverse (pending_local_decls);
1636 /* Fill in default names for the parameters. */
1637 for (parm = DECL_ARGUMENTS (current_function_decl), i = 0;
1638 parm != NULL_TREE; parm = TREE_CHAIN (parm), i++)
1640 if (DECL_NAME (parm) == NULL_TREE)
1642 int arg_i = METHOD_STATIC (current_function_decl) ? i+1 : i;
1644 DECL_NAME (parm) = get_identifier ("this");
1648 sprintf (buffer, "ARG_%d", arg_i);
1649 DECL_NAME (parm) = get_identifier (buffer);
1651 SET_DECL_ASSEMBLER_NAME (parm, DECL_NAME (parm));
1657 build_result_decl (fndecl)
1660 tree restype = TREE_TYPE (TREE_TYPE (fndecl));
1661 /* To be compatible with C_PROMOTING_INTEGER_TYPE_P in cc1/cc1plus. */
1662 if (INTEGRAL_TYPE_P (restype)
1663 && TYPE_PRECISION (restype) < TYPE_PRECISION (integer_type_node))
1664 restype = integer_type_node;
1665 return (DECL_RESULT (fndecl) = build_decl (RESULT_DECL, NULL_TREE, restype));
1669 complete_start_java_method (fndecl)
1672 if (! flag_emit_class_files)
1674 /* Initialize the RTL code for the function. */
1675 init_function_start (fndecl, input_filename, lineno);
1677 /* Set up parameters and prepare for return, for the function. */
1678 expand_function_start (fndecl, 0);
1682 /* If this fcn was already referenced via a block-scope `extern' decl (or
1683 an implicit decl), propagate certain information about the usage. */
1684 if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (current_function_decl)))
1685 TREE_ADDRESSABLE (current_function_decl) = 1;
1689 if (METHOD_STATIC (fndecl) && ! METHOD_PRIVATE (fndecl)
1690 && ! flag_emit_class_files
1691 && ! DECL_CLINIT_P (fndecl)
1692 && ! CLASS_INTERFACE (TYPE_NAME (current_class)))
1694 tree clas = DECL_CONTEXT (fndecl);
1695 tree init = build (CALL_EXPR, void_type_node,
1696 build_address_of (soft_initclass_node),
1697 build_tree_list (NULL_TREE, build_class_ref (clas)),
1699 TREE_SIDE_EFFECTS (init) = 1;
1700 expand_expr_stmt (init);
1703 /* Push local variables. Function compiled from source code are
1704 using a different local variables management, and for them,
1705 pushlevel shouldn't be called from here. */
1706 if (!CLASS_FROM_SOURCE_P (DECL_CONTEXT (fndecl)))
1709 if (! flag_emit_class_files)
1710 expand_start_bindings (1);
1713 if (METHOD_SYNCHRONIZED (fndecl) && ! flag_emit_class_files)
1715 /* Wrap function body with a monitorenter plus monitorexit cleanup. */
1716 tree enter, exit, lock;
1717 if (METHOD_STATIC (fndecl))
1718 lock = build_class_ref (DECL_CONTEXT (fndecl));
1720 lock = DECL_ARGUMENTS (fndecl);
1721 BUILD_MONITOR_ENTER (enter, lock);
1722 BUILD_MONITOR_EXIT (exit, lock);
1723 if (!CLASS_FROM_SOURCE_P (DECL_CONTEXT (fndecl)))
1725 expand_expr_stmt (enter);
1726 expand_decl_cleanup (NULL_TREE, exit);
1730 tree function_body = DECL_FUNCTION_BODY (fndecl);
1731 tree body = BLOCK_EXPR_BODY (function_body);
1732 lock = build (COMPOUND_EXPR, void_type_node,
1734 build (TRY_FINALLY_EXPR, void_type_node, body, exit));
1735 TREE_SIDE_EFFECTS (lock) = 1;
1736 BLOCK_EXPR_BODY (function_body) = lock;
1742 start_java_method (fndecl)
1748 current_function_decl = fndecl;
1749 announce_function (fndecl);
1751 i = DECL_MAX_LOCALS(fndecl) + DECL_MAX_STACK(fndecl);
1752 decl_map = make_tree_vec (i);
1753 type_map = (tree *) xrealloc (type_map, i * sizeof (tree));
1755 #if defined(DEBUG_JAVA_BINDING_LEVELS)
1756 fprintf (stderr, "%s:\n", lang_printable_name (fndecl, 2));
1758 #endif /* defined(DEBUG_JAVA_BINDING_LEVELS) */
1759 pushlevel (1); /* Push parameters. */
1761 ptr = &DECL_ARGUMENTS (fndecl);
1762 for (tem = TYPE_ARG_TYPES (TREE_TYPE (fndecl)), i = 0;
1763 tem != end_params_node; tem = TREE_CHAIN (tem), i++)
1765 tree parm_name = NULL_TREE, parm_decl;
1766 tree parm_type = TREE_VALUE (tem);
1767 if (i >= DECL_MAX_LOCALS (fndecl))
1770 parm_decl = build_decl (PARM_DECL, parm_name, parm_type);
1771 DECL_CONTEXT (parm_decl) = fndecl;
1772 if (PROMOTE_PROTOTYPES
1773 && TYPE_PRECISION (parm_type) < TYPE_PRECISION (integer_type_node)
1774 && INTEGRAL_TYPE_P (parm_type))
1775 parm_type = integer_type_node;
1776 DECL_ARG_TYPE (parm_decl) = parm_type;
1779 ptr = &TREE_CHAIN (parm_decl);
1781 /* Add parm_decl to the decl_map. */
1782 push_jvm_slot (i, parm_decl);
1784 type_map[i] = TREE_TYPE (parm_decl);
1785 if (TYPE_IS_WIDE (TREE_TYPE (parm_decl)))
1788 type_map[i] = void_type_node;
1792 DECL_ARG_SLOT_COUNT (current_function_decl) = i;
1794 while (i < DECL_MAX_LOCALS(fndecl))
1795 type_map[i++] = NULL_TREE;
1797 build_result_decl (fndecl);
1798 complete_start_java_method (fndecl);
1804 tree fndecl = current_function_decl;
1806 expand_end_bindings (getdecls (), 1, 0);
1807 /* pop out of function */
1810 /* pop out of its parameters */
1813 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl;
1815 /* Generate rtl for function exit. */
1816 expand_function_end (input_filename, lineno, 0);
1818 /* Run the optimizers and output assembler code for this function. */
1819 rest_of_compilation (fndecl);
1821 current_function_decl = NULL_TREE;
1824 #include "gt-java-decl.h"