1 /* Java(TM) language-specific utility routines.
2 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
3 2005, 2006, 2007 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>.
21 Java and all Java-based marks are trademarks or registered trademarks
22 of Sun Microsystems, Inc. in the United States and other countries.
23 The Free Software Foundation is independent of Sun Microsystems, Inc. */
25 /* Hacked by Per Bothner <bothner@cygnus.com> February 1996. */
29 #include "coretypes.h"
35 #include "java-tree.h"
38 #include "langhooks.h"
39 #include "langhooks-def.h"
42 #include "diagnostic.h"
43 #include "tree-inline.h"
44 #include "splay-tree.h"
45 #include "tree-dump.h"
49 static bool java_init (void);
50 static void java_finish (void);
51 static unsigned int java_init_options (unsigned int, const char **);
52 static bool java_post_options (const char **);
54 static int java_handle_option (size_t scode, const char *arg, int value);
55 static void put_decl_string (const char *, int);
56 static void put_decl_node (tree);
57 static void java_print_error_function (diagnostic_context *, const char *,
59 static int merge_init_test_initialization (void * *, void *);
60 static int inline_init_test_initialization (void * *, void *);
61 static bool java_dump_tree (void *, tree);
62 static void dump_compound_expr (dump_info_p, tree);
63 static bool java_decl_ok_for_sibcall (const_tree);
64 static tree java_get_callee_fndecl (const_tree);
65 static void java_clear_binding_stack (void);
67 static enum classify_record java_classify_record (tree type);
69 #ifndef TARGET_OBJECT_SUFFIX
70 # define TARGET_OBJECT_SUFFIX ".o"
73 /* Table indexed by tree code giving a string containing a character
74 classifying the tree code. Possibilities are
75 t, d, s, c, r, <, 1 and 2. See java/java-tree.def for details. */
77 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
79 const enum tree_code_class tree_code_type[] = {
82 #include "java-tree.def"
86 /* Table indexed by tree code giving number of expression
87 operands beyond the fixed part of the node structure.
88 Not used for types or decls. */
90 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
92 const unsigned char tree_code_length[] = {
95 #include "java-tree.def"
99 /* Names of tree components.
100 Used for printing out the tree and error messages. */
101 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
103 const char *const tree_code_name[] = {
106 #include "java-tree.def"
110 /* Table of machine-independent attributes. */
111 const struct attribute_spec java_attribute_table[] =
113 { "nonnull", 0, -1, false, true, true,
115 { NULL, 0, 0, false, false, false, NULL }
118 /* Used to avoid printing error messages with bogus function
119 prototypes. Starts out false. */
120 static bool inhibit_error_function_printing;
122 const char *resource_name;
124 /* When nonzero, -Wall was turned on. */
127 /* When nonzero, report use of deprecated classes, methods, or fields. */
128 int flag_deprecated = 1;
130 /* When zero, don't optimize static class initialization. This flag shouldn't
131 be tested alone, use STATIC_CLASS_INITIALIZATION_OPTIMIZATION_P instead. */
132 /* FIXME: Make this work with gimplify. */
133 /* int flag_optimize_sci = 0; */
135 /* Don't attempt to verify invocations. */
136 int flag_verify_invocations = 0;
138 /* When nonzero, print extra version information. */
139 static int v_flag = 0;
143 /* Variable controlling how dependency tracking is enabled in
145 static int dependency_tracking = 0;
147 /* Flag values for DEPENDENCY_TRACKING. */
148 #define DEPEND_SET_FILE 1
149 #define DEPEND_ENABLE 2
150 #define DEPEND_TARGET_SET 4
151 #define DEPEND_FILE_ALREADY_SET 8
153 struct language_function GTY(())
158 #undef LANG_HOOKS_NAME
159 #define LANG_HOOKS_NAME "GNU Java"
160 #undef LANG_HOOKS_INIT
161 #define LANG_HOOKS_INIT java_init
162 #undef LANG_HOOKS_FINISH
163 #define LANG_HOOKS_FINISH java_finish
164 #undef LANG_HOOKS_INIT_OPTIONS
165 #define LANG_HOOKS_INIT_OPTIONS java_init_options
166 #undef LANG_HOOKS_HANDLE_OPTION
167 #define LANG_HOOKS_HANDLE_OPTION java_handle_option
168 #undef LANG_HOOKS_POST_OPTIONS
169 #define LANG_HOOKS_POST_OPTIONS java_post_options
170 #undef LANG_HOOKS_PARSE_FILE
171 #define LANG_HOOKS_PARSE_FILE java_parse_file
172 #undef LANG_HOOKS_MARK_ADDRESSABLE
173 #define LANG_HOOKS_MARK_ADDRESSABLE java_mark_addressable
174 #undef LANG_HOOKS_DUP_LANG_SPECIFIC_DECL
175 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL java_dup_lang_specific_decl
176 #undef LANG_HOOKS_DECL_PRINTABLE_NAME
177 #define LANG_HOOKS_DECL_PRINTABLE_NAME lang_printable_name
178 #undef LANG_HOOKS_PRINT_ERROR_FUNCTION
179 #define LANG_HOOKS_PRINT_ERROR_FUNCTION java_print_error_function
181 #undef LANG_HOOKS_TYPE_FOR_MODE
182 #define LANG_HOOKS_TYPE_FOR_MODE java_type_for_mode
183 #undef LANG_HOOKS_TYPE_FOR_SIZE
184 #define LANG_HOOKS_TYPE_FOR_SIZE java_type_for_size
185 #undef LANG_HOOKS_CLASSIFY_RECORD
186 #define LANG_HOOKS_CLASSIFY_RECORD java_classify_record
188 #undef LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN
189 #define LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN java_dump_tree
191 #undef LANG_HOOKS_GIMPLIFY_EXPR
192 #define LANG_HOOKS_GIMPLIFY_EXPR java_gimplify_expr
194 #undef LANG_HOOKS_DECL_OK_FOR_SIBCALL
195 #define LANG_HOOKS_DECL_OK_FOR_SIBCALL java_decl_ok_for_sibcall
197 #undef LANG_HOOKS_GET_CALLEE_FNDECL
198 #define LANG_HOOKS_GET_CALLEE_FNDECL java_get_callee_fndecl
200 #undef LANG_HOOKS_CLEAR_BINDING_STACK
201 #define LANG_HOOKS_CLEAR_BINDING_STACK java_clear_binding_stack
203 #undef LANG_HOOKS_SET_DECL_ASSEMBLER_NAME
204 #define LANG_HOOKS_SET_DECL_ASSEMBLER_NAME java_mangle_decl
206 #undef LANG_HOOKS_ATTRIBUTE_TABLE
207 #define LANG_HOOKS_ATTRIBUTE_TABLE java_attribute_table
209 /* Each front end provides its own. */
210 const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
213 * process java-specific compiler command-line options
214 * return 0, but do not complain if the option is not recognized.
217 java_handle_option (size_t scode, const char *arg, int value)
219 enum opt_code code = (enum opt_code) scode;
224 jcf_path_include_arg (arg);
228 jcf_dependency_init (1);
229 dependency_tracking |= DEPEND_ENABLE;
233 jcf_dependency_init (1);
234 dependency_tracking |= DEPEND_SET_FILE | DEPEND_ENABLE;
238 jcf_dependency_set_dep_file (arg);
239 dependency_tracking |= DEPEND_FILE_ALREADY_SET;
243 jcf_dependency_init (0);
244 dependency_tracking |= DEPEND_ENABLE;
248 jcf_dependency_init (0);
249 dependency_tracking |= DEPEND_SET_FILE | DEPEND_ENABLE;
253 jcf_dependency_print_dummies ();
257 jcf_dependency_set_target (arg);
258 dependency_tracking |= DEPEND_TARGET_SET;
263 /* When -Wall given, enable -Wunused. We do this because the C
264 compiler does it, and people expect it. */
268 case OPT_fenable_assertions_:
269 add_enable_assert (arg, value);
272 case OPT_fenable_assertions:
273 add_enable_assert ("", value);
276 case OPT_fdisable_assertions_:
277 add_enable_assert (arg, !value);
280 case OPT_fdisable_assertions:
281 add_enable_assert ("", !value);
284 case OPT_fassume_compiled_:
285 add_assume_compiled (arg, !value);
288 case OPT_fassume_compiled:
289 add_assume_compiled ("", !value);
292 case OPT_fbootclasspath_:
293 jcf_path_bootclasspath_arg (arg);
296 case OPT_faux_classpath:
297 case OPT_fclasspath_:
298 case OPT_fCLASSPATH_:
299 jcf_path_classpath_arg (arg);
302 case OPT_fcompile_resource_:
307 if (!dump_switch_p (arg))
316 jcf_path_extdirs_arg (arg);
319 case OPT_foutput_class_dir_:
320 /* FIXME: remove; this is handled by ecj1 now. */
327 case OPT_fsource_filename_:
328 java_read_sourcefilenames (arg);
332 if (cl_options[code].flags & CL_Java)
340 /* Global open file. */
346 /* FIXME: Indirect dispatch isn't yet compatible with static class
347 init optimization. */
348 if (flag_indirect_dispatch)
349 always_initialize_class_p = true;
351 if (!flag_indirect_dispatch)
352 flag_indirect_classes = false;
354 jcf_path_seal (v_flag);
356 java_init_decl_processing ();
358 using_eh_for_cleanups ();
366 jcf_dependency_write ();
369 /* Buffer used by lang_printable_name. */
370 static char *decl_buf = NULL;
372 /* Allocated size of decl_buf. */
373 static int decl_buflen = 0;
375 /* Length of used part of decl_buf; position for next character. */
376 static int decl_bufpos = 0;
378 /* Append the string STR to decl_buf.
379 It length is given by LEN; -1 means the string is nul-terminated. */
382 put_decl_string (const char *str, int len)
386 if (decl_bufpos + len >= decl_buflen)
388 if (decl_buf == NULL)
390 decl_buflen = len + 100;
391 decl_buf = XNEWVEC (char, decl_buflen);
396 decl_buf = xrealloc (decl_buf, decl_buflen);
399 strcpy (decl_buf + decl_bufpos, str);
403 /* Append to decl_buf a printable name for NODE. */
406 put_decl_node (tree node)
409 if (TREE_CODE (node) == POINTER_TYPE)
411 node = TREE_TYPE (node);
414 if (DECL_P (node) && DECL_NAME (node) != NULL_TREE)
416 if (TREE_CODE (node) == FUNCTION_DECL)
418 /* We want to print the type the DECL belongs to. We don't do
419 that when we handle constructors. */
420 if (! DECL_CONSTRUCTOR_P (node)
421 && ! DECL_ARTIFICIAL (node) && DECL_CONTEXT (node))
423 put_decl_node (TYPE_NAME (DECL_CONTEXT (node)));
424 put_decl_string (".", 1);
426 if (! DECL_CONSTRUCTOR_P (node))
427 put_decl_node (DECL_NAME (node));
428 if (TREE_TYPE (node) != NULL_TREE)
431 tree args = TYPE_ARG_TYPES (TREE_TYPE (node));
432 if (TREE_CODE (TREE_TYPE (node)) == METHOD_TYPE)
433 args = TREE_CHAIN (args);
434 put_decl_string ("(", 1);
435 for ( ; args != end_params_node; args = TREE_CHAIN (args), i++)
438 put_decl_string (",", 1);
439 put_decl_node (TREE_VALUE (args));
441 put_decl_string (")", 1);
445 put_decl_node (DECL_NAME (node));
447 else if (TYPE_P (node) && TYPE_NAME (node) != NULL_TREE)
449 if (TREE_CODE (node) == RECORD_TYPE && TYPE_ARRAY_P (node))
451 put_decl_node (TYPE_ARRAY_ELEMENT (node));
452 put_decl_string("[]", 2);
454 else if (node == promoted_byte_type_node)
455 put_decl_string ("byte", 4);
456 else if (node == promoted_short_type_node)
457 put_decl_string ("short", 5);
458 else if (node == promoted_char_type_node)
459 put_decl_string ("char", 4);
460 else if (node == promoted_boolean_type_node)
461 put_decl_string ("boolean", 7);
462 else if (node == void_type_node && was_pointer)
463 put_decl_string ("null", 4);
465 put_decl_node (TYPE_NAME (node));
467 else if (TREE_CODE (node) == IDENTIFIER_NODE)
468 put_decl_string (IDENTIFIER_POINTER (node), IDENTIFIER_LENGTH (node));
470 put_decl_string ("<unknown>", -1);
473 /* Return a user-friendly name for DECL.
474 The resulting string is only valid until the next call.
475 The value of the hook decl_printable_name is this function,
476 which is also called directly by java_print_error_function. */
479 lang_printable_name (tree decl, int v)
482 if (v == 0 && TREE_CODE (decl) == FUNCTION_DECL)
483 put_decl_node (DECL_NAME (decl));
485 put_decl_node (decl);
486 put_decl_string ("", 1);
490 /* Print on stderr the current class and method context. This function
491 is the value of the hook print_error_function. */
493 static GTY(()) tree last_error_function_context;
494 static GTY(()) tree last_error_function;
496 java_print_error_function (diagnostic_context *context ATTRIBUTE_UNUSED,
498 diagnostic_info *diagnostic ATTRIBUTE_UNUSED)
500 /* Don't print error messages with bogus function prototypes. */
501 if (inhibit_error_function_printing)
504 if (current_function_decl != NULL
505 && DECL_CONTEXT (current_function_decl) != last_error_function_context)
508 fprintf (stderr, "%s: ", file);
510 last_error_function_context = DECL_CONTEXT (current_function_decl);
511 fprintf (stderr, "In class '%s':\n",
512 lang_printable_name (last_error_function_context, 0));
514 if (last_error_function != current_function_decl)
517 fprintf (stderr, "%s: ", file);
519 if (current_function_decl == NULL)
520 fprintf (stderr, "At top level:\n");
523 const char *name = lang_printable_name (current_function_decl, 2);
524 fprintf (stderr, "In %s '%s':\n",
525 (DECL_CONSTRUCTOR_P (current_function_decl) ? "constructor"
530 last_error_function = current_function_decl;
535 /* Called to install the PRINT_ERROR_FUNCTION hook differently
536 according to LEVEL. LEVEL is 1 during early parsing, when function
537 prototypes aren't fully resolved. java_print_error_function is set
538 so it doesn't print incomplete function prototypes. When LEVEL is
539 2, function prototypes are fully resolved and can be printed when
543 lang_init_source (int level)
545 inhibit_error_function_printing = (level == 1);
549 java_init_options (unsigned int argc ATTRIBUTE_UNUSED,
550 const char **argv ATTRIBUTE_UNUSED)
552 flag_bounds_check = 1;
554 flag_non_call_exceptions = 1;
556 /* In Java floating point operations never trap. */
557 flag_trapping_math = 0;
559 /* In Java arithmetic overflow always wraps around. */
562 /* Java requires left-to-right evaluation of subexpressions. */
563 flag_evaluation_order = 1;
565 /* Unit at a time is disabled for Java because it is considered
567 no_unit_at_a_time_default = 1;
574 /* Post-switch processing. */
576 java_post_options (const char **pfilename)
578 const char *filename = *pfilename;
580 /* Use tree inlining. */
583 if (flag_inline_functions)
584 flag_inline_trees = 2;
586 /* An absolute requirement: if we're not using indirect dispatch, we
587 must always verify everything. */
588 if (! flag_indirect_dispatch)
589 flag_verify_invocations = true;
591 if (flag_reduced_reflection)
593 if (flag_indirect_dispatch)
594 error ("-findirect-dispatch is incompatible "
595 "with -freduced-reflection");
597 error ("-fjni is incompatible with -freduced-reflection");
600 /* Open input file. */
602 if (filename == 0 || !strcmp (filename, "-"))
607 if (dependency_tracking)
608 error ("can't do dependency tracking with input from stdin");
612 if (dependency_tracking)
616 /* If the target is set and the output filename is set, then
617 there's no processing to do here. Otherwise we must
618 compute one or the other. */
619 if (! ((dependency_tracking & DEPEND_TARGET_SET)
620 && (dependency_tracking & DEPEND_FILE_ALREADY_SET)))
622 dot = strrchr (filename, '.');
624 error ("couldn't determine target name for dependency tracking");
627 char *buf = XNEWVEC (char, dot - filename +
628 3 + sizeof (TARGET_OBJECT_SUFFIX));
629 strncpy (buf, filename, dot - filename);
631 /* If emitting class files, we might have multiple
632 targets. The class generation code takes care of
633 registering them. Otherwise we compute the
635 if ((dependency_tracking & DEPEND_TARGET_SET))
639 strcpy (buf + (dot - filename), TARGET_OBJECT_SUFFIX);
640 jcf_dependency_set_target (buf);
643 if ((dependency_tracking & DEPEND_FILE_ALREADY_SET))
645 else if ((dependency_tracking & DEPEND_SET_FILE))
647 strcpy (buf + (dot - filename), ".d");
648 jcf_dependency_set_dep_file (buf);
651 jcf_dependency_set_dep_file ("-");
658 #ifdef USE_MAPPED_LOCATION
659 linemap_add (line_table, LC_ENTER, false, filename, 0);
660 linemap_add (line_table, LC_RENAME, false, "<built-in>", 0);
663 /* Initialize the compiler back end. */
667 /* Return either DECL or its known constant value (if it has one). */
670 decl_constant_value (tree decl)
672 if (/* Don't change a variable array bound or initial value to a constant
673 in a place where a variable is invalid. */
674 current_function_decl != 0
675 && ! TREE_THIS_VOLATILE (decl)
676 && TREE_READONLY (decl)
677 && DECL_INITIAL (decl) != 0
678 && TREE_CODE (DECL_INITIAL (decl)) != ERROR_MARK
679 /* This is invalid if initial value is not constant.
680 If it has either a function call, a memory reference,
681 or a variable, then re-evaluating it could give different results. */
682 && TREE_CONSTANT (DECL_INITIAL (decl))
683 /* Check for cases where this is sub-optimal, even though valid. */
684 && TREE_CODE (DECL_INITIAL (decl)) != CONSTRUCTOR)
685 return DECL_INITIAL (decl);
689 /* Every call to a static constructor has an associated boolean
690 variable which is in the outermost scope of the calling method.
691 This variable is used to avoid multiple calls to the static
692 constructor for each class.
694 It looks something like this:
698 boolean dummy = OtherClass.is_initialized;
703 OtherClass.initialize();
705 ... use OtherClass.data ...
708 Each of these boolean variables has an entry in the
709 DECL_FUNCTION_INIT_TEST_TABLE of a method. When inlining a method
710 we must merge the DECL_FUNCTION_INIT_TEST_TABLE from the function
711 being inlined and create the boolean variables in the outermost
712 scope of the method being inlined into. */
714 /* Create a mapping from a boolean variable in a method being inlined
715 to one in the scope of the method being inlined into. */
718 merge_init_test_initialization (void **entry, void *x)
720 struct treetreehash_entry *ite = (struct treetreehash_entry *) *entry;
721 splay_tree decl_map = (splay_tree)x;
723 tree *init_test_decl;
725 /* See if we have remapped this declaration. If we haven't there's
726 a bug in the inliner. */
727 n = splay_tree_lookup (decl_map, (splay_tree_key) ite->value);
730 /* Create a new entry for the class and its remapped boolean
731 variable. If we already have a mapping for this class we've
732 already initialized it, so don't overwrite the value. */
733 init_test_decl = java_treetreehash_new
734 (DECL_FUNCTION_INIT_TEST_TABLE (current_function_decl), ite->key);
735 if (!*init_test_decl)
736 *init_test_decl = (tree)n->value;
738 /* This fixes a weird case.
740 The front end assumes that once we have called a method that
741 initializes some class, we can assume the class is initialized. It
742 does this by setting the DECL_INITIAL of the init_test_decl for that
743 class, and no initializations are emitted for that class.
745 However, what if the method that is supposed to do the initialization
746 is itself inlined in the caller? When expanding the called method
747 we'll assume that the class initialization has already been done,
748 because the DECL_INITIAL of the init_test_decl is set.
750 To fix this we remove the DECL_INITIAL (in the caller scope) of all
751 the init_test_decls corresponding to classes initialized by the
752 inlined method. This makes the caller no longer assume that the
753 method being inlined does any class initializations. */
754 DECL_INITIAL (*init_test_decl) = NULL;
759 /* Merge the DECL_FUNCTION_INIT_TEST_TABLE from the function we're
763 java_inlining_merge_static_initializers (tree fn, void *decl_map)
766 (DECL_FUNCTION_INIT_TEST_TABLE (fn),
767 merge_init_test_initialization, decl_map);
770 /* Lookup a DECL_FUNCTION_INIT_TEST_TABLE entry in the method we're
771 inlining into. If we already have a corresponding entry in that
772 class we don't need to create another one, so we create a mapping
773 from the variable in the inlined class to the corresponding
777 inline_init_test_initialization (void **entry, void *x)
779 struct treetreehash_entry *ite = (struct treetreehash_entry *) *entry;
780 splay_tree decl_map = (splay_tree)x;
782 tree h = java_treetreehash_find
783 (DECL_FUNCTION_INIT_TEST_TABLE (current_function_decl), ite->key);
786 splay_tree_insert (decl_map,
787 (splay_tree_key) ite->value,
788 (splay_tree_value) h);
792 /* Look up the boolean variables in the DECL_FUNCTION_INIT_TEST_TABLE
793 of a method being inlined. For each hone, if we already have a
794 variable associated with the same class in the method being inlined
795 into, create a new mapping for it. */
798 java_inlining_map_static_initializers (tree fn, void *decl_map)
801 (DECL_FUNCTION_INIT_TEST_TABLE (fn),
802 inline_init_test_initialization, decl_map);
805 /* Avoid voluminous output for deep recursion of compound exprs. */
808 dump_compound_expr (dump_info_p di, tree t)
814 switch (TREE_CODE (TREE_OPERAND (t, i)))
817 dump_compound_expr (di, TREE_OPERAND (t, i));
821 dump_child ("expr", TREE_OPERAND (t, i));
827 java_dump_tree (void *dump_info, tree t)
830 dump_info_p di = (dump_info_p) dump_info;
832 /* Figure out what kind of node this is. */
833 code = TREE_CODE (t);
838 dump_child ("args", DECL_ARGUMENTS (t));
839 if (DECL_EXTERNAL (t))
840 dump_string (di, "undefined");
842 dump_string (di, "extern");
844 dump_string (di, "static");
845 if (DECL_LANG_SPECIFIC (t) && !dump_flag (di, TDF_SLIM, t))
846 dump_child ("inline body", DECL_SAVED_TREE (t));
850 dump_child ("expr", TREE_OPERAND (t, 0));
854 dump_child ("goto", TREE_OPERAND (t, 0));
858 dump_child ("label", TREE_OPERAND (t, 0));
862 if (BLOCK_EXPR_BODY (t))
864 tree local = BLOCK_VARS (t);
867 tree next = TREE_CHAIN (local);
868 dump_child ("var", local);
873 tree block = BLOCK_EXPR_BODY (t);
874 dump_child ("body", block);
875 block = TREE_CHAIN (block);
881 if (!dump_flag (di, TDF_SLIM, t))
883 dump_compound_expr (di, t);
892 /* Java calls can't, in general, be sibcalls because we need an
893 accurate stack trace in order to guarantee correct operation of
894 methods such as Class.forName(String) and
895 SecurityManager.getClassContext(). */
898 java_decl_ok_for_sibcall (const_tree decl)
900 return (decl != NULL && DECL_CONTEXT (decl) == output_class
901 && DECL_INLINE (decl));
904 /* Given a call_expr, try to figure out what its target might be. In
905 the case of an indirection via the atable, search for the decl. If
906 the decl is external, we return NULL. If we don't, the optimizer
907 will replace the indirection with a direct call, which undoes the
908 purpose of the atable indirection. */
910 java_get_callee_fndecl (const_tree call_expr)
912 tree method, table, element, atable_methods;
916 /* FIXME: This is disabled because we end up passing calls through
917 the PLT, and we do NOT want to do that. */
920 if (TREE_CODE (call_expr) != CALL_EXPR)
922 method = CALL_EXPR_FN (call_expr);
924 if (TREE_CODE (method) != ARRAY_REF)
926 table = TREE_OPERAND (method, 0);
927 if (! DECL_LANG_SPECIFIC(table)
928 || !DECL_OWNER (table)
929 || TYPE_ATABLE_DECL (DECL_OWNER (table)) != table)
932 atable_methods = TYPE_ATABLE_METHODS (DECL_OWNER (table));
933 index = TREE_INT_CST_LOW (TREE_OPERAND (method, 1));
935 /* FIXME: Replace this for loop with a hash table lookup. */
936 for (element = atable_methods; element; element = TREE_CHAIN (element))
940 tree purpose = TREE_PURPOSE (element);
941 if (TREE_CODE (purpose) == FUNCTION_DECL
942 && ! DECL_EXTERNAL (purpose))
954 /* Clear the binding stack. */
956 java_clear_binding_stack (void)
958 while (!global_bindings_p ())
962 static enum classify_record
963 java_classify_record (tree type)
965 if (! CLASS_P (type))
966 return RECORD_IS_STRUCT;
968 /* ??? GDB does not support DW_TAG_interface_type as of December,
969 2007. Re-enable this at a later time. */
970 if (0 && CLASS_INTERFACE (TYPE_NAME (type)))
971 return RECORD_IS_INTERFACE;
973 return RECORD_IS_CLASS;
976 #include "gt-java-lang.h"