1 /* Java(TM) language-specific utility routines.
2 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
3 2005, 2006, 2007, 2008 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
);
66 static enum classify_record
java_classify_record (tree type
);
68 #ifndef TARGET_OBJECT_SUFFIX
69 # define TARGET_OBJECT_SUFFIX ".o"
72 /* Table indexed by tree code giving a string containing a character
73 classifying the tree code. Possibilities are
74 t, d, s, c, r, <, 1 and 2. See java/java-tree.def for details. */
76 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
78 const enum tree_code_class tree_code_type
[] = {
81 #include "java-tree.def"
85 /* Table indexed by tree code giving number of expression
86 operands beyond the fixed part of the node structure.
87 Not used for types or decls. */
89 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
91 const unsigned char tree_code_length
[] = {
94 #include "java-tree.def"
98 /* Names of tree components.
99 Used for printing out the tree and error messages. */
100 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
102 const char *const tree_code_name
[] = {
105 #include "java-tree.def"
109 /* Table of machine-independent attributes. */
110 const struct attribute_spec java_attribute_table
[] =
112 { "nonnull", 0, -1, false, true, true,
114 { NULL
, 0, 0, false, false, false, NULL
}
117 /* Used to avoid printing error messages with bogus function
118 prototypes. Starts out false. */
119 static bool inhibit_error_function_printing
;
121 const char *resource_name
;
123 /* When nonzero, -Wall was turned on. */
126 /* When nonzero, report use of deprecated classes, methods, or fields. */
127 int flag_deprecated
= 1;
129 /* When zero, don't optimize static class initialization. This flag shouldn't
130 be tested alone, use STATIC_CLASS_INITIALIZATION_OPTIMIZATION_P instead. */
131 /* FIXME: Make this work with gimplify. */
132 /* int flag_optimize_sci = 0; */
134 /* Don't attempt to verify invocations. */
135 int flag_verify_invocations
= 0;
137 /* When nonzero, print extra version information. */
138 static int v_flag
= 0;
142 /* Variable controlling how dependency tracking is enabled in
144 static int dependency_tracking
= 0;
146 /* Flag values for DEPENDENCY_TRACKING. */
147 #define DEPEND_SET_FILE 1
148 #define DEPEND_ENABLE 2
149 #define DEPEND_TARGET_SET 4
150 #define DEPEND_FILE_ALREADY_SET 8
152 struct language_function
GTY(())
157 #undef LANG_HOOKS_NAME
158 #define LANG_HOOKS_NAME "GNU Java"
159 #undef LANG_HOOKS_INIT
160 #define LANG_HOOKS_INIT java_init
161 #undef LANG_HOOKS_FINISH
162 #define LANG_HOOKS_FINISH java_finish
163 #undef LANG_HOOKS_INIT_OPTIONS
164 #define LANG_HOOKS_INIT_OPTIONS java_init_options
165 #undef LANG_HOOKS_HANDLE_OPTION
166 #define LANG_HOOKS_HANDLE_OPTION java_handle_option
167 #undef LANG_HOOKS_POST_OPTIONS
168 #define LANG_HOOKS_POST_OPTIONS java_post_options
169 #undef LANG_HOOKS_PARSE_FILE
170 #define LANG_HOOKS_PARSE_FILE java_parse_file
171 #undef LANG_HOOKS_MARK_ADDRESSABLE
172 #define LANG_HOOKS_MARK_ADDRESSABLE java_mark_addressable
173 #undef LANG_HOOKS_DUP_LANG_SPECIFIC_DECL
174 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL java_dup_lang_specific_decl
175 #undef LANG_HOOKS_DECL_PRINTABLE_NAME
176 #define LANG_HOOKS_DECL_PRINTABLE_NAME lang_printable_name
177 #undef LANG_HOOKS_PRINT_ERROR_FUNCTION
178 #define LANG_HOOKS_PRINT_ERROR_FUNCTION java_print_error_function
180 #undef LANG_HOOKS_TYPE_FOR_MODE
181 #define LANG_HOOKS_TYPE_FOR_MODE java_type_for_mode
182 #undef LANG_HOOKS_TYPE_FOR_SIZE
183 #define LANG_HOOKS_TYPE_FOR_SIZE java_type_for_size
184 #undef LANG_HOOKS_CLASSIFY_RECORD
185 #define LANG_HOOKS_CLASSIFY_RECORD java_classify_record
187 #undef LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN
188 #define LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN java_dump_tree
190 #undef LANG_HOOKS_GIMPLIFY_EXPR
191 #define LANG_HOOKS_GIMPLIFY_EXPR java_gimplify_expr
193 #undef LANG_HOOKS_DECL_OK_FOR_SIBCALL
194 #define LANG_HOOKS_DECL_OK_FOR_SIBCALL java_decl_ok_for_sibcall
196 #undef LANG_HOOKS_GET_CALLEE_FNDECL
197 #define LANG_HOOKS_GET_CALLEE_FNDECL java_get_callee_fndecl
199 #undef LANG_HOOKS_SET_DECL_ASSEMBLER_NAME
200 #define LANG_HOOKS_SET_DECL_ASSEMBLER_NAME java_mangle_decl
202 #undef LANG_HOOKS_ATTRIBUTE_TABLE
203 #define LANG_HOOKS_ATTRIBUTE_TABLE java_attribute_table
205 /* Each front end provides its own. */
206 const struct lang_hooks lang_hooks
= LANG_HOOKS_INITIALIZER
;
209 * process java-specific compiler command-line options
210 * return 0, but do not complain if the option is not recognized.
213 java_handle_option (size_t scode
, const char *arg
, int value
)
215 enum opt_code code
= (enum opt_code
) scode
;
220 jcf_path_include_arg (arg
);
224 jcf_dependency_init (1);
225 dependency_tracking
|= DEPEND_ENABLE
;
229 jcf_dependency_init (1);
230 dependency_tracking
|= DEPEND_SET_FILE
| DEPEND_ENABLE
;
234 jcf_dependency_set_dep_file (arg
);
235 dependency_tracking
|= DEPEND_FILE_ALREADY_SET
;
239 jcf_dependency_init (0);
240 dependency_tracking
|= DEPEND_ENABLE
;
244 jcf_dependency_init (0);
245 dependency_tracking
|= DEPEND_SET_FILE
| DEPEND_ENABLE
;
249 jcf_dependency_print_dummies ();
253 jcf_dependency_set_target (arg
);
254 dependency_tracking
|= DEPEND_TARGET_SET
;
259 /* When -Wall given, enable -Wunused. We do this because the C
260 compiler does it, and people expect it. */
264 case OPT_fenable_assertions_
:
265 add_enable_assert (arg
, value
);
268 case OPT_fenable_assertions
:
269 add_enable_assert ("", value
);
272 case OPT_fdisable_assertions_
:
273 add_enable_assert (arg
, !value
);
276 case OPT_fdisable_assertions
:
277 add_enable_assert ("", !value
);
280 case OPT_fassume_compiled_
:
281 add_assume_compiled (arg
, !value
);
284 case OPT_fassume_compiled
:
285 add_assume_compiled ("", !value
);
288 case OPT_fbootclasspath_
:
289 jcf_path_bootclasspath_arg (arg
);
292 case OPT_faux_classpath
:
293 case OPT_fclasspath_
:
294 case OPT_fCLASSPATH_
:
295 jcf_path_classpath_arg (arg
);
298 case OPT_fcompile_resource_
:
303 if (!dump_switch_p (arg
))
312 jcf_path_extdirs_arg (arg
);
315 case OPT_foutput_class_dir_
:
316 /* FIXME: remove; this is handled by ecj1 now. */
323 case OPT_fsource_filename_
:
324 java_read_sourcefilenames (arg
);
328 if (cl_options
[code
].flags
& CL_Java
)
336 /* Global open file. */
342 /* FIXME: Indirect dispatch isn't yet compatible with static class
343 init optimization. */
344 if (flag_indirect_dispatch
)
345 always_initialize_class_p
= true;
347 if (!flag_indirect_dispatch
)
348 flag_indirect_classes
= false;
350 jcf_path_seal (v_flag
);
352 java_init_decl_processing ();
354 using_eh_for_cleanups ();
362 jcf_dependency_write ();
365 /* Buffer used by lang_printable_name. */
366 static char *decl_buf
= NULL
;
368 /* Allocated size of decl_buf. */
369 static int decl_buflen
= 0;
371 /* Length of used part of decl_buf; position for next character. */
372 static int decl_bufpos
= 0;
374 /* Append the string STR to decl_buf.
375 It length is given by LEN; -1 means the string is nul-terminated. */
378 put_decl_string (const char *str
, int len
)
382 if (decl_bufpos
+ len
>= decl_buflen
)
384 if (decl_buf
== NULL
)
386 decl_buflen
= len
+ 100;
387 decl_buf
= XNEWVEC (char, decl_buflen
);
392 decl_buf
= xrealloc (decl_buf
, decl_buflen
);
395 strcpy (decl_buf
+ decl_bufpos
, str
);
399 /* Append to decl_buf a printable name for NODE. */
402 put_decl_node (tree node
)
405 if (TREE_CODE (node
) == POINTER_TYPE
)
407 node
= TREE_TYPE (node
);
410 if (DECL_P (node
) && DECL_NAME (node
) != NULL_TREE
)
412 if (TREE_CODE (node
) == FUNCTION_DECL
)
414 /* We want to print the type the DECL belongs to. We don't do
415 that when we handle constructors. */
416 if (! DECL_CONSTRUCTOR_P (node
)
417 && ! DECL_ARTIFICIAL (node
) && DECL_CONTEXT (node
))
419 put_decl_node (TYPE_NAME (DECL_CONTEXT (node
)));
420 put_decl_string (".", 1);
422 if (! DECL_CONSTRUCTOR_P (node
))
423 put_decl_node (DECL_NAME (node
));
424 if (TREE_TYPE (node
) != NULL_TREE
)
427 tree args
= TYPE_ARG_TYPES (TREE_TYPE (node
));
428 if (TREE_CODE (TREE_TYPE (node
)) == METHOD_TYPE
)
429 args
= TREE_CHAIN (args
);
430 put_decl_string ("(", 1);
431 for ( ; args
!= end_params_node
; args
= TREE_CHAIN (args
), i
++)
434 put_decl_string (",", 1);
435 put_decl_node (TREE_VALUE (args
));
437 put_decl_string (")", 1);
441 put_decl_node (DECL_NAME (node
));
443 else if (TYPE_P (node
) && TYPE_NAME (node
) != NULL_TREE
)
445 if (TREE_CODE (node
) == RECORD_TYPE
&& TYPE_ARRAY_P (node
))
447 put_decl_node (TYPE_ARRAY_ELEMENT (node
));
448 put_decl_string("[]", 2);
450 else if (node
== promoted_byte_type_node
)
451 put_decl_string ("byte", 4);
452 else if (node
== promoted_short_type_node
)
453 put_decl_string ("short", 5);
454 else if (node
== promoted_char_type_node
)
455 put_decl_string ("char", 4);
456 else if (node
== promoted_boolean_type_node
)
457 put_decl_string ("boolean", 7);
458 else if (node
== void_type_node
&& was_pointer
)
459 put_decl_string ("null", 4);
461 put_decl_node (TYPE_NAME (node
));
463 else if (TREE_CODE (node
) == IDENTIFIER_NODE
)
464 put_decl_string (IDENTIFIER_POINTER (node
), IDENTIFIER_LENGTH (node
));
466 put_decl_string ("<unknown>", -1);
469 /* Return a user-friendly name for DECL.
470 The resulting string is only valid until the next call.
471 The value of the hook decl_printable_name is this function,
472 which is also called directly by java_print_error_function. */
475 lang_printable_name (tree decl
, int v
)
478 if (v
== 0 && TREE_CODE (decl
) == FUNCTION_DECL
)
479 put_decl_node (DECL_NAME (decl
));
481 put_decl_node (decl
);
482 put_decl_string ("", 1);
486 /* Print on stderr the current class and method context. This function
487 is the value of the hook print_error_function. */
489 static GTY(()) tree last_error_function_context
;
490 static GTY(()) tree last_error_function
;
492 java_print_error_function (diagnostic_context
*context ATTRIBUTE_UNUSED
,
494 diagnostic_info
*diagnostic ATTRIBUTE_UNUSED
)
496 /* Don't print error messages with bogus function prototypes. */
497 if (inhibit_error_function_printing
)
500 if (current_function_decl
!= NULL
501 && DECL_CONTEXT (current_function_decl
) != last_error_function_context
)
504 fprintf (stderr
, "%s: ", file
);
506 last_error_function_context
= DECL_CONTEXT (current_function_decl
);
507 fprintf (stderr
, "In class '%s':\n",
508 lang_printable_name (last_error_function_context
, 0));
510 if (last_error_function
!= current_function_decl
)
513 fprintf (stderr
, "%s: ", file
);
515 if (current_function_decl
== NULL
)
516 fprintf (stderr
, "At top level:\n");
519 const char *name
= lang_printable_name (current_function_decl
, 2);
520 fprintf (stderr
, "In %s '%s':\n",
521 (DECL_CONSTRUCTOR_P (current_function_decl
) ? "constructor"
526 last_error_function
= current_function_decl
;
531 /* Called to install the PRINT_ERROR_FUNCTION hook differently
532 according to LEVEL. LEVEL is 1 during early parsing, when function
533 prototypes aren't fully resolved. java_print_error_function is set
534 so it doesn't print incomplete function prototypes. When LEVEL is
535 2, function prototypes are fully resolved and can be printed when
539 lang_init_source (int level
)
541 inhibit_error_function_printing
= (level
== 1);
545 java_init_options (unsigned int argc ATTRIBUTE_UNUSED
,
546 const char **argv ATTRIBUTE_UNUSED
)
548 flag_bounds_check
= 1;
550 flag_non_call_exceptions
= 1;
552 /* In Java floating point operations never trap. */
553 flag_trapping_math
= 0;
555 /* In Java arithmetic overflow always wraps around. */
558 /* Java requires left-to-right evaluation of subexpressions. */
559 flag_evaluation_order
= 1;
561 /* Unit at a time is disabled for Java because it is considered
563 no_unit_at_a_time_default
= 1;
570 /* Post-switch processing. */
572 java_post_options (const char **pfilename
)
574 const char *filename
= *pfilename
;
576 /* Use tree inlining. */
579 if (flag_inline_functions
)
580 flag_inline_trees
= 2;
582 /* An absolute requirement: if we're not using indirect dispatch, we
583 must always verify everything. */
584 if (! flag_indirect_dispatch
)
585 flag_verify_invocations
= true;
587 if (flag_reduced_reflection
)
589 if (flag_indirect_dispatch
)
590 error ("-findirect-dispatch is incompatible "
591 "with -freduced-reflection");
593 error ("-fjni is incompatible with -freduced-reflection");
596 /* Open input file. */
598 if (filename
== 0 || !strcmp (filename
, "-"))
603 if (dependency_tracking
)
604 error ("can't do dependency tracking with input from stdin");
608 if (dependency_tracking
)
612 /* If the target is set and the output filename is set, then
613 there's no processing to do here. Otherwise we must
614 compute one or the other. */
615 if (! ((dependency_tracking
& DEPEND_TARGET_SET
)
616 && (dependency_tracking
& DEPEND_FILE_ALREADY_SET
)))
618 dot
= strrchr (filename
, '.');
620 error ("couldn't determine target name for dependency tracking");
623 char *buf
= XNEWVEC (char, dot
- filename
+
624 3 + sizeof (TARGET_OBJECT_SUFFIX
));
625 strncpy (buf
, filename
, dot
- filename
);
627 /* If emitting class files, we might have multiple
628 targets. The class generation code takes care of
629 registering them. Otherwise we compute the
631 if ((dependency_tracking
& DEPEND_TARGET_SET
))
635 strcpy (buf
+ (dot
- filename
), TARGET_OBJECT_SUFFIX
);
636 jcf_dependency_set_target (buf
);
639 if ((dependency_tracking
& DEPEND_FILE_ALREADY_SET
))
641 else if ((dependency_tracking
& DEPEND_SET_FILE
))
643 strcpy (buf
+ (dot
- filename
), ".d");
644 jcf_dependency_set_dep_file (buf
);
647 jcf_dependency_set_dep_file ("-");
654 linemap_add (line_table
, LC_ENTER
, false, filename
, 0);
655 linemap_add (line_table
, LC_RENAME
, false, "<built-in>", 0);
657 /* Initialize the compiler back end. */
661 /* Return either DECL or its known constant value (if it has one). */
664 decl_constant_value (tree decl
)
666 if (/* Don't change a variable array bound or initial value to a constant
667 in a place where a variable is invalid. */
668 current_function_decl
!= 0
669 && ! TREE_THIS_VOLATILE (decl
)
670 && TREE_READONLY (decl
)
671 && DECL_INITIAL (decl
) != 0
672 && TREE_CODE (DECL_INITIAL (decl
)) != ERROR_MARK
673 /* This is invalid if initial value is not constant.
674 If it has either a function call, a memory reference,
675 or a variable, then re-evaluating it could give different results. */
676 && TREE_CONSTANT (DECL_INITIAL (decl
))
677 /* Check for cases where this is sub-optimal, even though valid. */
678 && TREE_CODE (DECL_INITIAL (decl
)) != CONSTRUCTOR
)
679 return DECL_INITIAL (decl
);
683 /* Every call to a static constructor has an associated boolean
684 variable which is in the outermost scope of the calling method.
685 This variable is used to avoid multiple calls to the static
686 constructor for each class.
688 It looks something like this:
692 boolean dummy = OtherClass.is_initialized;
697 OtherClass.initialize();
699 ... use OtherClass.data ...
702 Each of these boolean variables has an entry in the
703 DECL_FUNCTION_INIT_TEST_TABLE of a method. When inlining a method
704 we must merge the DECL_FUNCTION_INIT_TEST_TABLE from the function
705 being inlined and create the boolean variables in the outermost
706 scope of the method being inlined into. */
708 /* Create a mapping from a boolean variable in a method being inlined
709 to one in the scope of the method being inlined into. */
712 merge_init_test_initialization (void **entry
, void *x
)
714 struct treetreehash_entry
*ite
= (struct treetreehash_entry
*) *entry
;
715 splay_tree decl_map
= (splay_tree
)x
;
717 tree
*init_test_decl
;
719 /* See if we have remapped this declaration. If we haven't there's
720 a bug in the inliner. */
721 n
= splay_tree_lookup (decl_map
, (splay_tree_key
) ite
->value
);
724 /* Create a new entry for the class and its remapped boolean
725 variable. If we already have a mapping for this class we've
726 already initialized it, so don't overwrite the value. */
727 init_test_decl
= java_treetreehash_new
728 (DECL_FUNCTION_INIT_TEST_TABLE (current_function_decl
), ite
->key
);
729 if (!*init_test_decl
)
730 *init_test_decl
= (tree
)n
->value
;
732 /* This fixes a weird case.
734 The front end assumes that once we have called a method that
735 initializes some class, we can assume the class is initialized. It
736 does this by setting the DECL_INITIAL of the init_test_decl for that
737 class, and no initializations are emitted for that class.
739 However, what if the method that is supposed to do the initialization
740 is itself inlined in the caller? When expanding the called method
741 we'll assume that the class initialization has already been done,
742 because the DECL_INITIAL of the init_test_decl is set.
744 To fix this we remove the DECL_INITIAL (in the caller scope) of all
745 the init_test_decls corresponding to classes initialized by the
746 inlined method. This makes the caller no longer assume that the
747 method being inlined does any class initializations. */
748 DECL_INITIAL (*init_test_decl
) = NULL
;
753 /* Merge the DECL_FUNCTION_INIT_TEST_TABLE from the function we're
757 java_inlining_merge_static_initializers (tree fn
, void *decl_map
)
760 (DECL_FUNCTION_INIT_TEST_TABLE (fn
),
761 merge_init_test_initialization
, decl_map
);
764 /* Lookup a DECL_FUNCTION_INIT_TEST_TABLE entry in the method we're
765 inlining into. If we already have a corresponding entry in that
766 class we don't need to create another one, so we create a mapping
767 from the variable in the inlined class to the corresponding
771 inline_init_test_initialization (void **entry
, void *x
)
773 struct treetreehash_entry
*ite
= (struct treetreehash_entry
*) *entry
;
774 splay_tree decl_map
= (splay_tree
)x
;
776 tree h
= java_treetreehash_find
777 (DECL_FUNCTION_INIT_TEST_TABLE (current_function_decl
), ite
->key
);
780 splay_tree_insert (decl_map
,
781 (splay_tree_key
) ite
->value
,
782 (splay_tree_value
) h
);
786 /* Look up the boolean variables in the DECL_FUNCTION_INIT_TEST_TABLE
787 of a method being inlined. For each hone, if we already have a
788 variable associated with the same class in the method being inlined
789 into, create a new mapping for it. */
792 java_inlining_map_static_initializers (tree fn
, void *decl_map
)
795 (DECL_FUNCTION_INIT_TEST_TABLE (fn
),
796 inline_init_test_initialization
, decl_map
);
799 /* Avoid voluminous output for deep recursion of compound exprs. */
802 dump_compound_expr (dump_info_p di
, tree t
)
808 switch (TREE_CODE (TREE_OPERAND (t
, i
)))
811 dump_compound_expr (di
, TREE_OPERAND (t
, i
));
815 dump_child ("expr", TREE_OPERAND (t
, i
));
821 java_dump_tree (void *dump_info
, tree t
)
824 dump_info_p di
= (dump_info_p
) dump_info
;
826 /* Figure out what kind of node this is. */
827 code
= TREE_CODE (t
);
832 dump_child ("args", DECL_ARGUMENTS (t
));
833 if (DECL_EXTERNAL (t
))
834 dump_string (di
, "undefined");
836 dump_string (di
, "extern");
838 dump_string (di
, "static");
839 if (DECL_LANG_SPECIFIC (t
) && !dump_flag (di
, TDF_SLIM
, t
))
840 dump_child ("inline body", DECL_SAVED_TREE (t
));
844 dump_child ("expr", TREE_OPERAND (t
, 0));
848 dump_child ("goto", TREE_OPERAND (t
, 0));
852 dump_child ("label", TREE_OPERAND (t
, 0));
856 if (BLOCK_EXPR_BODY (t
))
858 tree local
= BLOCK_VARS (t
);
861 tree next
= TREE_CHAIN (local
);
862 dump_child ("var", local
);
867 tree block
= BLOCK_EXPR_BODY (t
);
868 dump_child ("body", block
);
869 block
= TREE_CHAIN (block
);
875 if (!dump_flag (di
, TDF_SLIM
, t
))
877 dump_compound_expr (di
, t
);
886 /* Java calls can't, in general, be sibcalls because we need an
887 accurate stack trace in order to guarantee correct operation of
888 methods such as Class.forName(String) and
889 SecurityManager.getClassContext(). */
892 java_decl_ok_for_sibcall (const_tree decl
)
894 return (decl
!= NULL
&& DECL_CONTEXT (decl
) == output_class
895 && DECL_INLINE (decl
));
898 /* Given a call_expr, try to figure out what its target might be. In
899 the case of an indirection via the atable, search for the decl. If
900 the decl is external, we return NULL. If we don't, the optimizer
901 will replace the indirection with a direct call, which undoes the
902 purpose of the atable indirection. */
904 java_get_callee_fndecl (const_tree call_expr
)
906 tree method
, table
, element
, atable_methods
;
910 /* FIXME: This is disabled because we end up passing calls through
911 the PLT, and we do NOT want to do that. */
914 if (TREE_CODE (call_expr
) != CALL_EXPR
)
916 method
= CALL_EXPR_FN (call_expr
);
918 if (TREE_CODE (method
) != ARRAY_REF
)
920 table
= TREE_OPERAND (method
, 0);
921 if (! DECL_LANG_SPECIFIC(table
)
922 || !DECL_OWNER (table
)
923 || TYPE_ATABLE_DECL (DECL_OWNER (table
)) != table
)
926 atable_methods
= TYPE_ATABLE_METHODS (DECL_OWNER (table
));
927 index
= TREE_INT_CST_LOW (TREE_OPERAND (method
, 1));
929 /* FIXME: Replace this for loop with a hash table lookup. */
930 for (element
= atable_methods
; element
; element
= TREE_CHAIN (element
))
934 tree purpose
= TREE_PURPOSE (element
);
935 if (TREE_CODE (purpose
) == FUNCTION_DECL
936 && ! DECL_EXTERNAL (purpose
))
948 static enum classify_record
949 java_classify_record (tree type
)
951 if (! CLASS_P (type
))
952 return RECORD_IS_STRUCT
;
954 /* ??? GDB does not support DW_TAG_interface_type as of December,
955 2007. Re-enable this at a later time. */
956 if (0 && CLASS_INTERFACE (TYPE_NAME (type
)))
957 return RECORD_IS_INTERFACE
;
959 return RECORD_IS_CLASS
;
962 #include "gt-java-lang.h"