1 /* Next Runtime (ABI-2) private.
2 Copyright (C) 2011-2013 Free Software Foundation, Inc.
4 Contributed by Iain Sandoe and based, in part, on an implementation in
5 'branches/apple/trunk' contributed by Apple Computer Inc.
7 This file is part of GCC.
9 GCC is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3, or (at your option)
14 GCC is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING3. If not see
21 <http://www.gnu.org/licenses/>. */
23 /* The NeXT ABI2 is used for m64 implementations on Darwin/OSX machines.
25 This version is intended to match (logically) the output of Apple's
30 #include "coretypes.h"
35 #include "cp/cp-tree.h"
40 #include "langhooks.h"
41 #include "c-family/c-objc.h"
44 /* When building Objective-C++, we are not linking against the C front-end
45 and so need to replicate the C tree-construction functions in some way. */
47 #define OBJCP_REMAP_FUNCTIONS
48 #include "objcp-decl.h"
53 #include "tree-iterator.h"
55 #include "objc-runtime-hooks.h"
56 #include "objc-runtime-shared-support.h"
57 #include "objc-encoding.h"
59 /* ABI 2 Private definitions. */
60 #define DEF_CONSTANT_STRING_CLASS_NAME "NSConstantString"
62 #define TAG_GETCLASS "objc_getClass"
63 #define TAG_GETMETACLASS "objc_getMetaClass"
65 #define TAG_MSGSEND "objc_msgSend"
66 #define TAG_MSGSENDSUPER "objc_msgSendSuper"
67 #define TAG_MSGSEND_STRET "objc_msgSend_stret"
68 #define TAG_MSGSENDSUPER_STRET "objc_msgSendSuper_stret"
70 #define TAG_NEXT_EHVTABLE_NAME "objc_ehtype_vtable"
71 #define TAG_V2_EH_TYPE "objc_ehtype_t"
73 #define UTAG_V2_CLASS "_class_t"
74 #define UTAG_V2_CLASS_RO "_class_ro_t"
75 #define UTAG_V2_PROTOCOL "_protocol_t"
76 #define UTAG_V2_PROTOCOL_LIST "_protocol_list_t"
78 #define UTAG_V2_EH_TYPE "_objc_ehtype_t"
80 #define OBJC2_CLS_HAS_CXX_STRUCTORS 0x0004L
82 enum objc_v2_tree_index
90 OCTI_V2_IVAR_LIST_TEMPL,
91 OCTI_V2_MESSAGE_REF_TEMPL,
92 OCTI_V2_SUPER_MESSAGE_REF_TEMPL,
94 OCTI_V2_MESSAGE_SELECTOR_TYPE,
95 OCTI_V2_SUPER_MESSAGE_SELECTOR_TYPE,
97 OCTI_V2_SUPER_IMP_TYPE,
102 OCTI_V2_PROPERTY_TEMPL,
105 OCTI_V2_UMSG_FIXUP_DECL,
106 OCTI_V2_UMSG_STRET_FIXUP_DECL,
107 OCTI_V2_UMSG_ID_FIXUP_DECL,
108 OCTI_V2_UMSG_ID_STRET_FIXUP_DECL,
109 OCTI_V2_UMSG_SUPER2_FIXUP_DECL,
110 OCTI_V2_UMSG_SUPER2_STRET_FIXUP_DECL,
112 /* Exceptions - related. */
113 OCTI_V2_BEGIN_CATCH_DECL,
114 OCTI_V2_END_CATCH_DECL,
115 OCTI_V2_RETHROW_DECL,
120 #define objc_v2_class_template objc_v2_global_trees[OCTI_V2_CLS_TEMPL]
121 #define objc_v2_class_ro_template \
122 objc_v2_global_trees[OCTI_V2_CLS_RO_TEMPL]
123 #define objc_v2_category_template \
124 objc_v2_global_trees[OCTI_V2_CAT_TEMPL]
125 #define objc_v2_protocol_template \
126 objc_v2_global_trees[OCTI_V2_PROTO_TEMPL]
128 /* struct message_ref_t */
129 #define objc_v2_message_ref_template \
130 objc_v2_global_trees[OCTI_V2_MESSAGE_REF_TEMPL]
132 #define objc_v2_ivar_list_ptr objc_v2_global_trees[OCTI_V2_IVAR_LIST_TEMPL]
134 /* struct super_message_ref_t */
135 #define objc_v2_super_message_ref_template \
136 objc_v2_global_trees[OCTI_V2_SUPER_MESSAGE_REF_TEMPL]
138 /* struct message_ref_t* */
139 #define objc_v2_selector_type objc_v2_global_trees[OCTI_V2_MESSAGE_SELECTOR_TYPE]
140 /* struct super_super_message_ref_t */
141 #define objc_v2_super_selector_type \
142 objc_v2_global_trees[OCTI_V2_SUPER_MESSAGE_SELECTOR_TYPE]
143 #define objc_v2_imp_type objc_v2_global_trees[OCTI_V2_IMP_TYPE]
144 #define objc_v2_super_imp_type objc_v2_global_trees[OCTI_V2_SUPER_IMP_TYPE]
146 #define UOBJC_V2_CACHE_decl objc_v2_global_trees[OCTI_V2_CACHE_DECL]
147 #define UOBJC_V2_VTABLE_decl objc_v2_global_trees[OCTI_V2_VTABLE_DECL]
149 #define objc_v2_ivar_template objc_v2_global_trees[OCTI_V2_IVAR_TEMPL]
150 #define objc_v2_property_template \
151 objc_v2_global_trees[OCTI_V2_PROPERTY_TEMPL]
155 /* objc_msgSend_fixup_rtp */
156 #define umsg_fixup_decl objc_v2_global_trees[OCTI_V2_UMSG_FIXUP_DECL]
157 /* objc_msgSend_stret_fixup_rtp */
158 #define umsg_stret_fixup_decl objc_v2_global_trees[OCTI_V2_UMSG_STRET_FIXUP_DECL]
159 /* objc_msgSendId_fixup_rtp */
160 #define umsg_id_fixup_decl objc_v2_global_trees[OCTI_V2_UMSG_ID_FIXUP_DECL]
161 /* objc_msgSendId_stret_fixup_rtp */
162 #define umsg_id_stret_fixup_decl \
163 objc_v2_global_trees[OCTI_V2_UMSG_ID_STRET_FIXUP_DECL]
164 /* objc_msgSendSuper2_fixup_rtp */
165 #define umsg_id_super2_fixup_decl \
166 objc_v2_global_trees[OCTI_V2_UMSG_SUPER2_FIXUP_DECL]
167 /* objc_msgSendSuper2_stret_fixup_rtp */
168 #define umsg_id_super2_stret_fixup_decl \
169 objc_v2_global_trees[OCTI_V2_UMSG_SUPER2_STRET_FIXUP_DECL]
171 #define objc2_begin_catch_decl objc_v2_global_trees[OCTI_V2_BEGIN_CATCH_DECL]
172 #define objc2_end_catch_decl objc_v2_global_trees[OCTI_V2_END_CATCH_DECL]
173 #define objc_rethrow_exception_decl \
174 objc_v2_global_trees[OCTI_V2_RETHROW_DECL]
176 /* rt_trees identifiers - shared between NeXT implementations. These allow
177 the FE to tag meta-data in a manner that survives LTO and can be used when
178 the runtime requires that certain meta-data items appear in particular
181 #include "objc-next-metadata-tags.h"
182 extern GTY(()) tree objc_rt_trees[OCTI_RT_META_MAX];
184 /* The OCTI_V2_... enumeration itself is in above. */
185 static GTY(()) tree objc_v2_global_trees[OCTI_V2_MAX];
187 static void next_runtime_02_initialize (void);
189 static void build_v2_message_ref_templates (void);
190 static void build_v2_class_templates (void);
191 static void build_v2_super_template (void);
192 static void build_v2_category_template (void);
193 static void build_v2_protocol_template (void);
195 static tree next_runtime_abi_02_super_superclassfield_id (void);
197 static tree next_runtime_abi_02_class_decl (tree);
198 static tree next_runtime_abi_02_metaclass_decl (tree);
199 static tree next_runtime_abi_02_category_decl (tree);
200 static tree next_runtime_abi_02_protocol_decl (tree);
201 static tree next_runtime_abi_02_string_decl (tree, const char *, string_section);
203 static tree next_runtime_abi_02_get_class_reference (tree);
204 static tree next_runtime_abi_02_build_selector_reference (location_t, tree, tree);
205 static tree next_runtime_abi_02_get_protocol_reference (location_t, tree);
206 static tree next_runtime_abi_02_build_ivar_ref (location_t, tree, tree);
207 static tree next_runtime_abi_02_get_class_super_ref (location_t, struct imp_entry *, bool);
208 static tree next_runtime_abi_02_get_category_super_ref (location_t, struct imp_entry *, bool);
210 static tree next_runtime_abi_02_receiver_is_class_object (tree);
211 static void next_runtime_abi_02_get_arg_type_list_base (vec<tree, va_gc> **,
213 static tree next_runtime_abi_02_build_objc_method_call (location_t, tree, tree,
214 tree, tree, tree, int);
215 static bool next_runtime_abi_02_setup_const_string_class_decl (void);
216 static tree next_runtime_abi_02_build_const_string_constructor (location_t, tree, int);
218 static tree create_extern_decl (tree, const char *);
220 static void objc_generate_v2_next_metadata (void);
221 static bool objc2_objc_exception_attr (tree);
223 /* void build_v2_protocol_reference (tree);*/
224 static void build_v2_ehtype_template (void);
225 static void build_v2_eh_catch_objects (void);
226 static tree next_runtime_02_eh_type (tree);
227 static tree objc_eh_personality (void);
228 static tree build_throw_stmt (location_t, tree, bool);
229 static tree objc_build_exc_ptr (struct objc_try_context **);
230 static tree begin_catch (struct objc_try_context **, tree, tree, tree, bool);
231 static void finish_catch (struct objc_try_context **, tree);
232 static tree finish_try_stmt (struct objc_try_context **);
234 /* TODO: Use an objc-map. */
235 static GTY ((length ("SIZEHASHTABLE"))) hash *extern_names;
238 objc_next_runtime_abi_02_init (objc_runtime_hooks *rthooks)
240 extern_names = ggc_alloc_cleared_vec_hash (SIZEHASHTABLE);
242 if (flag_objc_exceptions && flag_objc_sjlj_exceptions)
244 inform (UNKNOWN_LOCATION, "%<-fobjc-sjlj-exceptions%> is ignored for "
245 "%<-fnext-runtime%> when %<-fobjc-abi-version%> >= 2");
246 flag_objc_sjlj_exceptions = 0;
249 rthooks->initialize = next_runtime_02_initialize;
250 rthooks->default_constant_string_class_name = DEF_CONSTANT_STRING_CLASS_NAME;
251 rthooks->tag_getclass = TAG_GETCLASS;
252 rthooks->super_superclassfield_ident = next_runtime_abi_02_super_superclassfield_id;
254 rthooks->class_decl = next_runtime_abi_02_class_decl;
255 rthooks->metaclass_decl = next_runtime_abi_02_metaclass_decl;
256 rthooks->category_decl = next_runtime_abi_02_category_decl;
257 rthooks->protocol_decl = next_runtime_abi_02_protocol_decl;
258 rthooks->string_decl = next_runtime_abi_02_string_decl;
260 rthooks->get_class_reference = next_runtime_abi_02_get_class_reference;
261 rthooks->build_selector_reference = next_runtime_abi_02_build_selector_reference;
262 rthooks->get_protocol_reference = next_runtime_abi_02_get_protocol_reference;
263 rthooks->build_ivar_reference = next_runtime_abi_02_build_ivar_ref;
264 rthooks->get_class_super_ref = next_runtime_abi_02_get_class_super_ref;
265 rthooks->get_category_super_ref = next_runtime_abi_02_get_category_super_ref;
267 rthooks->receiver_is_class_object = next_runtime_abi_02_receiver_is_class_object;
268 rthooks->get_arg_type_list_base = next_runtime_abi_02_get_arg_type_list_base;
269 rthooks->build_objc_method_call = next_runtime_abi_02_build_objc_method_call;
271 rthooks->setup_const_string_class_decl =
272 next_runtime_abi_02_setup_const_string_class_decl;
273 rthooks->build_const_string_constructor =
274 next_runtime_abi_02_build_const_string_constructor;
276 rthooks->build_throw_stmt = build_throw_stmt;
277 rthooks->build_exc_ptr = objc_build_exc_ptr;
278 rthooks->begin_catch = begin_catch;
279 rthooks->finish_catch = finish_catch;
280 rthooks->finish_try_stmt = finish_try_stmt;
282 rthooks->generate_metadata = objc_generate_v2_next_metadata;
286 /* We need a way to convey what kind of meta-data are represented by a given
287 variable, since each type is expected (by the runtime) to be found in a
288 specific named section. The solution must be usable with LTO.
290 The scheme used for NeXT ABI 0/1 (partial matching of variable names) is not
291 satisfactory when LTO is used with ABI-2. We now tag ObjC meta-data with
292 identification attributes in the front end. The back-end may choose to act
293 on these as it requires. */
296 next_runtime_abi_02_init_metadata_attributes (void)
299 objc_meta = get_identifier ("OBJC2META");
302 meta_base = get_identifier ("V2_BASE");
304 meta_class = get_identifier ("G2_CLAS");
305 meta_metaclass = get_identifier ("G2_META");
307 meta_protocol = meta_base;
310 meta_clai_vars = meta_base;
316 meta_proto_cls_meth =
317 meta_proto_nst_meth = meta_base;
320 meta_catg_prot = meta_base;
322 meta_sel_refs = get_identifier ("V2_SRFS");
327 meta_prop_name_attr = get_identifier ("V2_STRG");
329 meta_mref = get_identifier ("V2_MREF");
330 meta_class_ref = get_identifier ("V2_CLRF");
331 meta_superclass_ref = get_identifier ("V2_SURF");
333 meta_label_classlist = get_identifier ("V2_CLAB");
334 meta_label_nonlazy_classlist = get_identifier ("V2_NLCL");
335 meta_label_categorylist = get_identifier ("V2_CALA");
336 meta_label_nonlazy_categorylist = get_identifier ("V2_NLCA");
338 meta_label_protocollist = get_identifier ("V2_PLST");
339 meta_proto_ref = get_identifier ("V2_PRFS");
341 meta_info = get_identifier ("V2_INFO");
343 meta_ehtype = get_identifier ("V2_EHTY");
345 meta_const_str = get_identifier ("V2_CSTR");
348 static void next_runtime_02_initialize (void)
352 /* For all NeXT objc ABIs -fobjc-call-cxx-cdtors is on by
354 if (!global_options_set.x_flag_objc_call_cxx_cdtors)
355 global_options.x_flag_objc_call_cxx_cdtors = 1;
358 /* Set up attributes to be attached to the meta-data so that they
359 will be placed in the correct sections. */
360 next_runtime_abi_02_init_metadata_attributes ();
362 /* `struct objc_selector *' */
363 objc_selector_type = build_pointer_type (xref_tag (RECORD_TYPE,
364 get_identifier (TAG_SELECTOR)));
366 /* IMP : id (*) (id, _message_ref_t*, ...)
367 SUPER_IMP : id (*) ( super_t*, _super_message_ref_t*, ...)
368 objc_v2_selector_type. */
369 build_v2_message_ref_templates ();
371 objc_v2_ivar_list_ptr =
372 build_pointer_type (xref_tag (RECORD_TYPE,
373 get_identifier ("_ivar_list_t")));
376 build_pointer_type (xref_tag (RECORD_TYPE,
377 get_identifier ("_prop_list_t")));
379 build_v2_class_templates ();
380 build_v2_super_template ();
381 build_v2_protocol_template ();
382 build_v2_category_template ();
384 /* id objc_msgSend_fixup_rtp (id, struct message_ref_t*, ...); */
385 type = build_varargs_function_type_list (objc_object_type,
387 objc_v2_selector_type,
389 umsg_fixup_decl = add_builtin_function ("objc_msgSend_fixup",
390 type, 0, NOT_BUILT_IN,
392 TREE_NOTHROW (umsg_fixup_decl) = 0;
394 /* id objc_msgSend_stret_fixup_rtp (id, struct message_ref_t*, ...); */
395 umsg_stret_fixup_decl = add_builtin_function ("objc_msgSend_stret_fixup",
396 type, 0, NOT_BUILT_IN,
398 TREE_NOTHROW (umsg_stret_fixup_decl) = 0;
400 /* id objc_msgSendId_fixup_rtp (id, struct message_ref_t*, ...); */
401 umsg_id_fixup_decl = add_builtin_function ("objc_msgSendId_fixup",
402 type, 0, NOT_BUILT_IN,
404 TREE_NOTHROW (umsg_id_fixup_decl) = 0;
406 /* id objc_msgSendId_stret_fixup_rtp
407 (id, struct message_ref_t*, ...); */
408 umsg_id_stret_fixup_decl = add_builtin_function ("objc_msgSendId_stret_fixup",
409 type, 0, NOT_BUILT_IN,
411 TREE_NOTHROW (umsg_id_stret_fixup_decl) = 0;
413 /* id objc_msgSendSuper2_fixup_rtp
414 (struct objc_super *, struct message_ref_t*, ...); */
415 type = build_varargs_function_type_list (objc_object_type,
417 objc_v2_super_selector_type,
419 umsg_id_super2_fixup_decl = add_builtin_function ("objc_msgSendSuper2_fixup",
420 type, 0, NOT_BUILT_IN,
422 TREE_NOTHROW (umsg_id_super2_fixup_decl) = 0;
424 /* id objc_msgSendSuper2_stret_fixup_rtp
425 (struct objc_super *, struct message_ref_t*, ...); */
426 umsg_id_super2_stret_fixup_decl =
427 add_builtin_function ("objc_msgSendSuper2_stret_fixup",
428 type, 0, NOT_BUILT_IN,
430 TREE_NOTHROW (umsg_id_super2_stret_fixup_decl) = 0;
432 /* Present in the library, but unused by the FE. */
433 /* Protocol *objc_getProtocol (const char *)
434 type = build_function_type_list (objc_protocol_type,
435 const_string_type_node,
437 objc_v2_getprotocol_decl = add_builtin_function ("objc_getProtocol",
438 type, 0, NOT_BUILT_IN,
440 TREE_NOTHROW (objc_v2_getprotocol_decl) = 0;*/
442 UOBJC_V2_CACHE_decl = create_extern_decl (ptr_type_node,
443 "_objc_empty_cache");
445 UOBJC_V2_VTABLE_decl = create_extern_decl (objc_v2_imp_type,
446 "_objc_empty_vtable");
448 /* id objc_getClass (const char *); */
449 type = build_function_type_list (objc_object_type,
450 const_string_type_node,
452 objc_get_class_decl = add_builtin_function (TAG_GETCLASS,
453 type, 0, NOT_BUILT_IN,
456 /* id objc_getMetaClass (const char *); */
457 objc_get_meta_class_decl = add_builtin_function (TAG_GETMETACLASS,
458 type, 0, NOT_BUILT_IN,
461 /* This is the type of all of the following functions
462 objc_copyStruct(). */
463 type = build_function_type_list (void_type_node,
470 /* Declare the following function:
472 objc_copyStruct (void *destination, const void *source,
473 ptrdiff_t size, BOOL is_atomic, BOOL has_strong); */
474 objc_copyStruct_decl = add_builtin_function ("objc_copyStruct",
475 type, 0, NOT_BUILT_IN,
477 TREE_NOTHROW (objc_copyStruct_decl) = 0;
478 objc_getPropertyStruct_decl = NULL_TREE;
479 objc_setPropertyStruct_decl = NULL_TREE;
481 gcc_assert (!flag_objc_sjlj_exceptions);
483 /* Although we warn that fobjc-exceptions is required for exceptions
484 code, we carry on and create it anyway. */
486 /* This can be required, even when exceptions code is not present,
487 when an __attribute__((objc_exception)) is applied to a
489 build_v2_ehtype_template ();
491 /* void * objc_begin_catch (void *) */
492 type = build_function_type_list (ptr_type_node,
493 ptr_type_node, NULL_TREE);
495 objc2_begin_catch_decl = add_builtin_function ("objc_begin_catch",
496 type, 0, NOT_BUILT_IN,
498 TREE_NOTHROW (objc2_begin_catch_decl) = 0;
500 /* void objc_end_catch () */
501 type = build_function_type_list (void_type_node, NULL_TREE);
502 objc2_end_catch_decl = add_builtin_function ("objc_end_catch",
503 type, 0, NOT_BUILT_IN,
505 TREE_NOTHROW (objc2_end_catch_decl) = 0;
507 /* void objc_exception_rethrow (void) */
508 objc_rethrow_exception_decl =
509 add_builtin_function ("objc_exception_rethrow",
510 type, 0, NOT_BUILT_IN,
512 TREE_NOTHROW (objc_rethrow_exception_decl) = 0;
513 using_eh_for_cleanups ();
514 lang_hooks.eh_runtime_type = next_runtime_02_eh_type;
515 lang_hooks.eh_personality = objc_eh_personality;
518 /* NOTE --- templates --- */
520 /* Set 'objc_v2_message_ref_template' to the data type node for
521 'struct _message_ref_t'. This needs to be done just once per
522 compilation. Also Set 'objc_v2_super_message_ref_template' to data
523 type node for 'struct _super_message_ref_t'. */
525 /* struct _message_ref_t
530 where IMP is: id (*) (id, _message_ref_t*, ...)
533 /* struct _super_message_ref_t
538 where SUPER_IMP is: id (*) ( super_t*, _super_message_ref_t*, ...)
542 build_v2_message_ref_templates (void)
544 tree ptr_message_ref_t;
545 tree decls, *chain = NULL;
547 /* struct _message_ref_t {...} */
548 objc_v2_message_ref_template =
549 objc_start_struct (get_identifier ("_message_ref_t"));
553 build_pointer_type (xref_tag (RECORD_TYPE,
554 get_identifier ("_message_ref_t")));
557 build_pointer_type (build_function_type_list
563 decls = add_field_decl (objc_v2_imp_type, "messenger", &chain);
566 add_field_decl (objc_selector_type, "name", &chain);
568 objc_finish_struct (objc_v2_message_ref_template, decls);
570 objc_v2_selector_type = build_pointer_type (objc_v2_message_ref_template);
573 /* struct _super_message_ref_t {...} */
574 objc_v2_super_message_ref_template =
575 objc_start_struct (get_identifier ("_super_message_ref_t"));
577 /* SUPER_IMP messenger; */
578 ptr_message_ref_t = build_pointer_type
579 (xref_tag (RECORD_TYPE,
580 get_identifier ("_super_message_ref_t")));
582 objc_v2_super_imp_type =
583 build_pointer_type (build_function_type_list
589 add_field_decl (objc_v2_super_imp_type, "messenger", &chain);
592 add_field_decl (objc_selector_type, "name", &chain);
594 objc_finish_struct (objc_v2_super_message_ref_template, decls);
595 objc_v2_super_selector_type =
596 build_pointer_type (objc_v2_super_message_ref_template);
599 /* Build following types which represent each class implementation.
603 uint32_t const flags;
604 uint32_t const instanceStart;
605 uint32_t const instanceSize;
607 uint32_t const reserved;
609 const uint8_t * const ivarLayout;
610 const char *const name;
611 const struct method_list_t * const baseMethods;
612 const struct objc_protocol_list *const baseProtocols;
613 const struct ivar_list_t *const ivars;
614 const uint8_t * const weakIvarLayout;
615 const struct _prop_list_t * const properties;
621 struct class_t *superclass;
625 ...When this is active - it will point to a rw version, but
626 when we build the meta-data we point it to the ro...
627 struct class_ro_t *data;
633 build_v2_class_templates (void)
636 tree decls, *chain = NULL;
638 /* struct class_ro_t {...} */
639 objc_v2_class_ro_template =
640 objc_start_struct (get_identifier (UTAG_V2_CLASS_RO));
642 /* uint32_t const flags; */
643 decls = add_field_decl (integer_type_node, "flags", &chain);
645 /* uint32_t const instanceStart; */
646 add_field_decl (integer_type_node, "instanceStart", &chain);
648 /* uint32_t const instanceSize; */
649 add_field_decl (integer_type_node, "instanceSize", &chain);
651 /* This ABI is currently only used on m64 NeXT. We always
652 explicitly declare the alignment padding. */
653 /* uint32_t const reserved; */
654 add_field_decl (integer_type_node, "reserved", &chain);
656 /* const uint8_t * const ivarLayout; */
657 cnst_strg_type = build_pointer_type (unsigned_char_type_node);
658 add_field_decl (cnst_strg_type, "ivarLayout", &chain);
660 /* const char *const name; */
661 add_field_decl (string_type_node, "name", &chain);
663 /* const struct method_list_t * const baseMethods; */
664 add_field_decl (objc_method_list_ptr, "baseMethods", &chain);
666 /* const struct objc_protocol_list *const baseProtocols; */
667 add_field_decl (build_pointer_type
668 (xref_tag (RECORD_TYPE,
669 get_identifier (UTAG_V2_PROTOCOL_LIST))),
670 "baseProtocols", &chain);
672 /* const struct ivar_list_t *const ivars; */
673 add_field_decl (objc_v2_ivar_list_ptr, "ivars", &chain);
675 /* const uint8_t * const weakIvarLayout; */
676 add_field_decl (cnst_strg_type, "weakIvarLayout", &chain);
678 /* struct _prop_list_t * baseProperties; */
679 add_field_decl (objc_prop_list_ptr, "baseProperties", &chain);
681 objc_finish_struct (objc_v2_class_ro_template, decls);
684 /* struct class_t {...} */
685 objc_v2_class_template =
686 objc_start_struct (get_identifier (UTAG_V2_CLASS));
688 /* struct class_t *isa; */
689 decls = add_field_decl (build_pointer_type (objc_v2_class_template),
692 /* struct class_t * const superclass; */
693 add_field_decl (build_pointer_type (objc_v2_class_template),
694 "superclass", &chain);
697 add_field_decl (build_pointer_type (void_type_node), "cache", &chain);
700 add_field_decl (build_pointer_type (objc_v2_imp_type), "vtable", &chain);
702 /* struct class_ro_t *ro; */
703 add_field_decl (build_pointer_type (objc_v2_class_ro_template), "ro", &chain);
705 objc_finish_struct (objc_v2_class_template, decls);
708 /* struct _objc_super
710 struct _objc_object *self;
714 build_v2_super_template (void)
716 tree decls, *chain = NULL;
718 objc_super_template = objc_start_struct (get_identifier (UTAG_SUPER));
720 /* struct _objc_object *self; */
721 decls = add_field_decl (objc_object_type, "self", &chain);
724 add_field_decl (objc_class_type, "cls", &chain);
726 objc_finish_struct (objc_super_template, decls);
732 const char * const protocol_name;
733 const struct protocol_list_t * const protocol_list;
734 const struct method_list_t * const instance_methods;
735 const struct method_list_t * const class_methods;
736 const struct method_list_t * optionalInstanceMethods;
737 const struct method_list_t * optionalClassMethod
738 const struct _prop_list_t * const properties;
740 const uint32_t flags;
744 build_v2_protocol_template (void)
746 tree decls, *chain = NULL;
748 objc_v2_protocol_template =
749 objc_start_struct (get_identifier (UTAG_V2_PROTOCOL));
752 decls = add_field_decl (objc_object_type, "isa", &chain);
754 /* char *protocol_name; */
755 add_field_decl (string_type_node, "protocol_name", &chain);
757 /* const struct protocol_list_t * const protocol_list; */
758 add_field_decl (build_pointer_type (objc_v2_protocol_template),
759 "protocol_list", &chain);
761 /* const struct method_list_t * const instance_methods; */
762 add_field_decl (objc_method_proto_list_ptr, "instance_methods", &chain);
764 /* const struct method_list_t * const class_methods; */
765 add_field_decl (objc_method_proto_list_ptr, "class_methods", &chain);
767 /* const struct method_list_t * optionalInstanceMethods; */
768 add_field_decl (objc_method_proto_list_ptr, "optionalInstanceMethods", &chain);
770 /* const struct method_list_t * optionalClassMethods; */
771 add_field_decl (objc_method_proto_list_ptr, "optionalClassMethods", &chain);
773 /* struct _prop_list_t * properties; */
774 add_field_decl (objc_prop_list_ptr, "properties", &chain);
776 /* const uint32_t size; */
777 add_field_decl (integer_type_node, "size", &chain);
779 /* const uint32_t flags; */
780 add_field_decl (integer_type_node, "flags", &chain);
782 objc_finish_struct (objc_v2_protocol_template, decls);
785 /* Build type for a category:
788 const char * const name;
789 struct class_t *const cls;
790 const struct method_list_t * const instance_methods;
791 const struct method_list_t * const class_methods;
792 const struct protocol_list_t * const protocols;
793 const struct _prop_list_t * const properties;
798 build_v2_category_template (void)
800 tree decls, *chain = NULL;
802 objc_v2_category_template =
803 objc_start_struct (get_identifier ("_category_t"));
806 decls = add_field_decl (string_type_node, "name", &chain);
808 /* struct class_t *const cls; */
809 add_field_decl (build_pointer_type (objc_v2_class_template), "cls", &chain);
811 /* struct method_list_t *instance_methods; */
812 add_field_decl (objc_method_list_ptr, "instance_methods", &chain);
814 /* struct method_list_t *class_methods; */
815 add_field_decl (objc_method_list_ptr, "class_methods", &chain);
817 /* struct protocol_list_t *protocol_list; */
818 add_field_decl (build_pointer_type (objc_v2_protocol_template),
819 "protocol_list", &chain );
821 /* struct _prop_list_t * properties; */
822 add_field_decl (objc_prop_list_ptr, "properties", &chain);
824 objc_finish_struct (objc_v2_category_template, decls);
827 /* NOTE --- Decls, Identifiers, Names etc. --- */
829 /* This routine is given a name and returns a matching extern variable
833 hash_name_lookup (hash *hashlist, tree name)
837 target = hashlist[IDENTIFIER_HASH_VALUE (name) % SIZEHASHTABLE];
841 if (name == DECL_NAME (target->key))
844 target = target->next;
849 /* This routine is given an extern variable and enters it in its hash
850 table. Note that hashing is done on its inner IDENTIFIER_NODE
854 hash_name_enter (hash *hashlist, tree id)
857 int slot = IDENTIFIER_HASH_VALUE (DECL_NAME (id)) % SIZEHASHTABLE;
859 obj = ggc_alloc_hashed_entry ();
861 obj->next = hashlist[slot];
864 hashlist[slot] = obj; /* append to front */
867 /* Create a declaration "extern <type> <name>;"
868 The var will need to be finalized (e.g. by calling finish_var_decl()). */
871 create_extern_decl (tree type, const char *name)
873 tree id = get_identifier (name);
874 tree var = hash_name_lookup (extern_names, id);
878 var = start_var_decl (type, name);
879 TREE_STATIC (var) = 0;
880 DECL_EXTERNAL (var) = 1;
881 TREE_PUBLIC (var) = 1;
882 hash_name_enter (extern_names, var);
886 /* Create a globally visible definition for variable NAME of a given TYPE. The
887 finish_var_decl() routine will need to be called on it afterwards. */
890 create_global_decl (tree type, const char *name)
892 tree id = get_identifier (name);
893 tree var = hash_name_lookup (extern_names, id);
896 DECL_EXTERNAL (var) = 0;
897 TREE_STATIC (var) = 1;
901 var = start_var_decl (type, name);
902 hash_name_enter (extern_names, var);
904 TREE_PUBLIC (var) = 1;
908 /* Create a symbol with __attribute__ ((visibility ("hidden")))
909 attribute (private extern). */
912 create_hidden_decl (tree type, const char *name)
914 tree decl = create_global_decl (type, name);
915 DECL_VISIBILITY (decl) = VISIBILITY_HIDDEN;
916 DECL_VISIBILITY_SPECIFIED (decl) = 1;
920 /* Irritatingly, we have a different superclass field name for ABI=2. */
921 /* PS/TODO: The field name does not matter, it is only used internally
922 by the compiler. We can rename it to whatever we want. ;-) */
925 next_runtime_abi_02_super_superclassfield_id (void)
927 /* TODO: Simplify. Just always return get_identifier ("cls"), or at
928 most look it once at startup then always return it. */
929 if (!super_superclassfield_id)
930 super_superclassfield_id = get_identifier ("cls");
931 return super_superclassfield_id;
935 next_runtime_abi_02_class_decl (tree klass)
939 snprintf (buf, BUFSIZE, "OBJC_CLASS_$_%s",
940 IDENTIFIER_POINTER (CLASS_NAME (klass)));
941 /* ObjC2 classes are extern visible. */
942 decl = create_global_decl (objc_v2_class_template, buf);
943 OBJCMETA (decl, objc_meta, meta_class);
948 next_runtime_abi_02_metaclass_decl (tree klass)
952 snprintf (buf, BUFSIZE, "OBJC_METACLASS_$_%s",
953 IDENTIFIER_POINTER (CLASS_NAME (klass)));
954 /* ObjC2 classes are extern visible. */
955 decl = create_global_decl (objc_v2_class_template, buf);
956 OBJCMETA (decl, objc_meta, meta_metaclass);
961 next_runtime_abi_02_category_decl (tree klass)
965 snprintf (buf, BUFSIZE, "_OBJC_Category_%s_on_%s",
966 IDENTIFIER_POINTER (CLASS_SUPER_NAME (klass)),
967 IDENTIFIER_POINTER (CLASS_NAME (klass)));
968 decl = start_var_decl (objc_v2_category_template, buf);
969 OBJCMETA (decl, objc_meta, meta_category);
974 next_runtime_abi_02_protocol_decl (tree p)
979 /* static struct _objc_protocol _OBJC_Protocol_<mumble>; */
980 snprintf (buf, BUFSIZE, "_OBJC_Protocol_%s",
981 IDENTIFIER_POINTER (PROTOCOL_NAME (p)));
982 decl = start_var_decl (objc_v2_protocol_template, buf);
983 OBJCMETA (decl, objc_meta, meta_protocol);
988 next_runtime_abi_02_string_decl (tree type, const char *name, string_section where)
990 tree var = start_var_decl (type, name);
994 OBJCMETA (var, objc_meta, meta_class_name);
997 OBJCMETA (var, objc_meta, meta_meth_name);
1000 OBJCMETA (var, objc_meta, meta_meth_type);
1002 case prop_names_attr:
1003 OBJCMETA (var, objc_meta, meta_prop_name_attr);
1006 OBJCMETA (var, objc_meta, meta_base);
1012 /* NOTE --- entry --- */
1014 typedef struct GTY(()) ident_data_tuple {
1017 } ident_data_tuple ;
1019 /* This routine creates a file scope static variable of type 'Class'
1020 to hold the address of a class. */
1023 build_v2_class_reference_decl (tree ident)
1028 snprintf (buf, BUFSIZE, "_OBJC_ClassRef_%s", IDENTIFIER_POINTER (ident));
1029 decl = start_var_decl (objc_class_type, buf);
1030 OBJCMETA (decl, objc_meta, meta_class_ref);
1034 /* This routine builds a class refs entry for each class name used.
1035 Initially, a (static-ref, IDENT) tuple is added to the list. The
1036 ident is replaced with address of the class metadata (of type
1037 'Class') in the output routine. */
1039 static GTY (()) vec<ident_data_tuple, va_gc> *classrefs;
1042 objc_v2_get_class_reference (tree ident)
1049 ident_data_tuple *ref;
1050 FOR_EACH_VEC_ELT (*classrefs, count, ref)
1052 if (ref->ident == ident)
1055 ref->data = build_v2_class_reference_decl (ident);
1061 /* Somewhat arbitrary initial provision. */
1062 vec_alloc (classrefs, 16);
1064 /* We come here if we don't find the entry - or if the table was yet
1066 decl = build_v2_class_reference_decl (ident);
1069 vec_safe_push (classrefs, e);
1074 next_runtime_abi_02_get_class_reference (tree ident)
1076 if (!flag_zero_link)
1077 return objc_v2_get_class_reference (ident);
1080 /* We fall back to using objc_getClass (). */
1081 vec<tree, va_gc> *v;
1084 /* ??? add_class_reference (ident); - is pointless, since the
1085 system lib does not export the equivalent symbols. Maybe we
1086 need to build a class ref anyway. */
1087 t = my_build_string_pointer (IDENTIFIER_LENGTH (ident) + 1,
1088 IDENTIFIER_POINTER (ident));
1090 t = build_function_call_vec (input_location, objc_get_class_decl, v, 0);
1096 /* Used by build_function_type_for_method. Append the types for
1097 receiver & _cmd at the start of a method argument list to ARGTYPES.
1098 CONTEXT is either METHOD_DEF or METHOD_REF, saying whether we are
1099 trying to define a method or call one. SUPERFLAG says this is for a
1100 send to super. METH may be NULL, in the case that there is no
1104 next_runtime_abi_02_get_arg_type_list_base (vec<tree, va_gc> **argtypes,
1105 tree meth, int context,
1111 receiver_type = objc_super_type;
1112 else if (context == METHOD_DEF && TREE_CODE (meth) == INSTANCE_METHOD_DECL)
1113 receiver_type = objc_instance_type;
1115 receiver_type = objc_object_type;
1117 vec_safe_push (*argtypes, receiver_type);
1118 /* Selector type - will eventually change to `int'. */
1119 vec_safe_push (*argtypes,
1120 superflag ? objc_v2_super_selector_type
1121 : objc_v2_selector_type);
1124 /* TODO: Merge this with the message refs. */
1126 build_selector_reference_decl (tree ident)
1129 char *t, buf[BUFSIZE];
1131 snprintf (buf, BUFSIZE, "_OBJC_SelRef_%s", IDENTIFIER_POINTER (ident));
1136 *t = '$'; /* Underscore would clash between foo:bar and foo_bar. */
1139 decl = start_var_decl (objc_selector_type, buf);
1140 OBJCMETA (decl, objc_meta, meta_sel_refs);
1145 next_runtime_abi_02_build_selector_reference (location_t loc ATTRIBUTE_UNUSED,
1147 tree proto ATTRIBUTE_UNUSED)
1149 tree *chain = &sel_ref_chain;
1154 if (TREE_VALUE (*chain) == ident)
1155 return TREE_PURPOSE (*chain);
1157 chain = &TREE_CHAIN (*chain);
1160 expr = build_selector_reference_decl (ident);
1161 *chain = tree_cons (expr, ident, NULL_TREE);
1166 /* Declare a variable of type 'struct message_ref_t'. */
1167 /* This will be finished in build_v2_message_ref_translation_table ().
1168 We take an idea from LLVM in making the names a bit more connected
1169 and thus the asm more readable. */
1172 build_v2_message_reference_decl (tree sel_name, tree message_func_ident)
1175 char buf[BUFSIZE], *t;
1178 /* Skip past the objc_msgSend it's the same for all... */
1179 if (IDENTIFIER_POINTER (message_func_ident)[offset] == '_')
1182 snprintf (buf, BUFSIZE, "_OBJC_MsgRef_%s_%s",
1183 &(IDENTIFIER_POINTER (message_func_ident)[offset]),
1184 IDENTIFIER_POINTER (sel_name));
1189 *t = '$'; /* Underscore would clash between foo:bar and foo_bar. */
1192 decl = start_var_decl (objc_v2_message_ref_template, buf);
1193 OBJCMETA (decl, objc_meta, meta_mref);
1197 typedef struct GTY(()) msgref_entry {
1203 static GTY (()) vec<msgref_entry, va_gc> *msgrefs;
1205 /* Build the list of (objc_msgSend_fixup_xxx, selector name), used
1206 later on to initialize the table of 'struct message_ref_t'
1210 build_v2_selector_messenger_reference (tree sel_name, tree message_func_decl)
1218 FOR_EACH_VEC_ELT (*msgrefs, count, ref)
1219 if (ref->func == message_func_decl && ref->selname == sel_name)
1220 return ref->refdecl;
1223 /* Somewhat arbitrary initial provision. */
1224 vec_alloc (msgrefs, 32);
1226 /* We come here if we don't find a match or at the start. */
1227 decl = build_v2_message_reference_decl (sel_name,
1228 DECL_NAME (message_func_decl));
1229 e.func = message_func_decl;
1230 e.selname = sel_name;
1232 vec_safe_push (msgrefs, e);
1237 build_v2_protocollist_ref_decl (tree protocol)
1240 tree protocol_ident = PROTOCOL_NAME (protocol);
1243 snprintf (buf, BUFSIZE, "_OBJC_ProtocolRef_%s",
1244 IDENTIFIER_POINTER (protocol_ident));
1245 /* TODO: other compiler versions make these hidden & weak. */
1246 decl = create_global_decl (objc_protocol_type, buf);
1247 /* Let optimizer know that this decl is not removable. */
1248 DECL_PRESERVE_P (decl) = 1;
1249 OBJCMETA (decl, objc_meta, meta_proto_ref);
1253 typedef struct GTY(()) prot_list_entry {
1257 static GTY (()) vec<prot_list_entry, va_gc> *protrefs;
1260 objc_v2_get_protocol_reference (tree ident)
1267 prot_list_entry *ref;
1268 FOR_EACH_VEC_ELT (*protrefs, count, ref)
1270 if (ref->id == ident)
1273 ref->refdecl = build_v2_protocollist_ref_decl (ident);
1274 return ref->refdecl;
1279 /* Somewhat arbitrary initial provision. */
1280 vec_alloc (protrefs, 32);
1282 /* We come here if we don't find the entry - or if the table was yet
1284 decl = build_v2_protocollist_ref_decl (ident);
1287 vec_safe_push (protrefs, e);
1292 next_runtime_abi_02_get_protocol_reference (location_t loc ATTRIBUTE_UNUSED,
1295 if (!PROTOCOL_FORWARD_DECL (p))
1296 PROTOCOL_FORWARD_DECL (p) = next_runtime_abi_02_protocol_decl (p);
1298 return objc_v2_get_protocol_reference (p);
1301 /* This routine returns the ivar declaration, if component is a valid
1302 ivar field; NULL_TREE otherwise. On finding an ivar, it also
1303 returns the class name in CLASS. */
1306 objc_is_ivar (tree expr, tree component, tree *klass)
1308 tree field = NULL_TREE;
1309 tree basetype = TYPE_MAIN_VARIANT (TREE_TYPE (expr));
1311 if (TREE_CODE (basetype) == RECORD_TYPE
1312 && TYPE_HAS_OBJC_INFO (basetype) && TYPE_OBJC_INTERFACE (basetype))
1314 *klass = lookup_interface (OBJC_TYPE_NAME (basetype));
1319 tree ivar_chain = CLASS_RAW_IVARS (*klass);
1322 field = is_ivar (ivar_chain, component);
1323 if (field != NULL_TREE)
1326 *klass = lookup_interface (CLASS_SUPER_NAME (*klass));
1335 create_ivar_offset_name (char *buf, tree class_name, tree field_decl)
1337 tree fname = DECL_NAME (field_decl);
1339 sprintf (buf, "OBJC_IVAR_$_%s.%s", IDENTIFIER_POINTER (class_name),
1340 IDENTIFIER_POINTER (fname));
1344 /* This routine generates new abi's ivar reference tree. It amounts
1345 to generating *(TYPE*)((char*)pObj + OFFSET_IVAR) when we normally
1346 generate pObj->IVAR. OFFSET_IVAR is an 'extern' variable holding
1347 the offset for 'IVAR' field. TYPE is type of IVAR field. */
1350 objc_v2_build_ivar_ref (tree datum, tree component)
1352 tree field, ref, class_name, offset, ftype, expr;
1353 char var_offset_name[512];
1355 field = objc_is_ivar (datum, component, &class_name);
1359 /* This routine only handles non-bitfield fields */
1360 /* DECL_INITIAL macro is set to width of bitfield and can be relied
1361 on to check for bitfield ivars. Note that I cannot rely on
1362 DECL_BIT_FIELD macro because it is only set when the whole struct
1363 is seen (at finish_struct) and not when the ivar chain is
1365 if (DECL_INITIAL (field))
1368 create_ivar_offset_name (var_offset_name, CLASS_NAME (class_name), field);
1370 offset = create_extern_decl (TREE_TYPE (size_zero_node), var_offset_name);
1372 ftype = TREE_TYPE (field);
1375 expr = build_c_cast (input_location,
1376 string_type_node, build_fold_addr_expr (datum));
1378 /* (char*)datum + offset */
1379 expr = fold_build_pointer_plus_loc (input_location, expr, offset);
1381 /* (ftype*)((char*)datum + offset) */
1382 expr = build_c_cast (input_location, build_pointer_type (ftype), expr);
1384 /* Finally: *(ftype*)((char*)datum + offset) */
1385 ref = build_indirect_ref (input_location, expr, RO_UNARY_STAR);
1387 /* We must set type of the resulting expression to be the same as
1388 the field type. This is because, build_indirect_ref (...)
1389 rebuilds the type which may result in lost information; as in the
1390 case of protocol-qualified types (id <protocol> ). */
1391 TREE_TYPE (ref) = ftype;
1393 if (TREE_READONLY (datum) || TREE_READONLY (field))
1394 TREE_READONLY (ref) = 1;
1396 if (TREE_THIS_VOLATILE (datum) || TREE_THIS_VOLATILE (field))
1397 TREE_THIS_VOLATILE (ref) = 1;
1399 if (TREE_DEPRECATED (field))
1400 warn_deprecated_use (field, NULL_TREE);
1405 /* IVAR refs are made via an externally referenceable offset and built
1406 on the fly. That is, unless they refer to (private) fields in the
1409 next_runtime_abi_02_build_ivar_ref (location_t loc ATTRIBUTE_UNUSED,
1413 if ((ivar = objc_v2_build_ivar_ref (base, id)))
1415 return objc_build_component_ref (base, id);
1418 /* [super ...] references are listed here (and built into a table at
1419 meta -data emit time). */
1421 build_v2_superclass_ref_decl (tree ident, bool inst)
1426 snprintf (buf, BUFSIZE, "_OBJC_%sSuperRef_%s", (inst?"":"Meta"),
1427 IDENTIFIER_POINTER (ident));
1428 decl = start_var_decl (objc_class_type, buf);
1429 OBJCMETA (decl, objc_meta, meta_superclass_ref);
1433 static GTY (()) vec<ident_data_tuple, va_gc> *class_super_refs;
1434 static GTY (()) vec<ident_data_tuple, va_gc> *metaclass_super_refs;
1437 next_runtime_abi_02_get_class_super_ref (location_t loc ATTRIBUTE_UNUSED,
1438 struct imp_entry *imp, bool inst_meth)
1442 tree id = CLASS_NAME (imp->imp_context);
1443 vec<ident_data_tuple, va_gc> *list = inst_meth ? class_super_refs
1444 : metaclass_super_refs;
1449 ident_data_tuple *ref;
1450 FOR_EACH_VEC_ELT (*list, count, ref)
1452 if (ref->ident == id)
1455 ref->data = build_v2_superclass_ref_decl (id, inst_meth);
1462 /* Somewhat arbitrary initial provision. */
1465 vec_alloc (class_super_refs, 16);
1466 list = class_super_refs;
1470 vec_alloc (metaclass_super_refs, 16);
1471 list = metaclass_super_refs;
1474 /* We come here if we don't find the entry - or if the table was yet
1476 decl = build_v2_superclass_ref_decl (id, inst_meth);
1479 vec_safe_push (list, e);
1484 next_runtime_abi_02_get_category_super_ref (location_t loc ATTRIBUTE_UNUSED,
1485 struct imp_entry *imp, bool inst_meth)
1487 /* ??? is this OK when zero-link = true? */
1488 tree super_name = CLASS_SUPER_NAME (imp->imp_template);
1491 if (!flag_zero_link)
1493 super_class = objc_get_class_reference (CLASS_NAME (imp->imp_template));
1497 /* If we are in a class method, we must retrieve the
1498 _metaclass_ for the current class, pointed at by the
1499 class's "isa" pointer. The following assumes that "isa" is
1500 the first ivar in a class (which it must be). */
1502 build_indirect_ref (input_location,
1503 build_c_cast (input_location,
1504 build_pointer_type (objc_class_type),
1509 /* ??? Do we need to add the class ref anway for zero-link? */
1510 /* else do it the slow way. */
1511 super_class = (inst_meth ? objc_get_class_decl : objc_get_meta_class_decl);
1512 super_name = my_build_string_pointer (IDENTIFIER_LENGTH (super_name) + 1,
1513 IDENTIFIER_POINTER (super_name));
1514 /* super_class = objc_get{Meta}Class("CLASS_SUPER_NAME"); */
1515 return build_function_call (input_location,
1517 build_tree_list (NULL_TREE, super_name));
1521 next_runtime_abi_02_receiver_is_class_object (tree receiver)
1523 if (TREE_CODE (receiver) == VAR_DECL
1524 && IS_CLASS (TREE_TYPE (receiver))
1525 && vec_safe_length (classrefs))
1528 ident_data_tuple *ref;
1529 /* The receiver is a variable created by build_class_reference_decl. */
1530 FOR_EACH_VEC_ELT (*classrefs, count, ref)
1531 if (ref->data == receiver)
1537 /* Assign all arguments in VALUES which have side-effect to a temporary
1538 and replaced that argument in VALUES list with the temporary. The
1539 arguments will be passed to a function with FNTYPE. */
1542 objc_copy_to_temp_side_effect_params (tree fntype, tree values)
1545 function_args_iterator iter;
1547 /* Skip over receiver and the &_msf_ref types. */
1548 function_args_iter_init (&iter, fntype);
1549 function_args_iter_next (&iter);
1550 function_args_iter_next (&iter);
1552 for (valtail = values; valtail;
1553 valtail = TREE_CHAIN (valtail), function_args_iter_next (&iter))
1555 tree value = TREE_VALUE (valtail);
1556 tree type = function_args_iter_cond (&iter);
1557 if (type == NULL_TREE)
1559 if (!TREE_SIDE_EFFECTS (value))
1561 /* To prevent re-evaluation. */
1562 value = save_expr (value);
1564 TREE_VALUE (valtail) = value;
1569 /* Build the new abi's messaging library call. It looks like:
1570 (*_msg.messenger) (receiver, &_msg, ...) */
1573 build_v2_build_objc_method_call (int super_flag, tree method_prototype,
1574 tree lookup_object, tree selector,
1579 tree sender, rcv_p, t;
1582 ? TREE_VALUE (TREE_TYPE (method_prototype))
1583 : objc_object_type);
1584 tree ftype = build_function_type_for_method (ret_type, method_prototype,
1585 METHOD_REF, super_flag);
1588 if (method_prototype && METHOD_TYPE_ATTRIBUTES (method_prototype))
1589 ftype = build_type_attribute_variant (
1590 ftype, METHOD_TYPE_ATTRIBUTES (method_prototype));
1592 sender_cast = build_pointer_type (ftype);
1595 method_params = objc_copy_to_temp_side_effect_params (ftype,
1598 /* Get &message_ref_t.messenger. */
1599 sender = build_c_cast (input_location,
1600 build_pointer_type (super_flag
1601 ? objc_v2_super_imp_type
1602 : objc_v2_imp_type),
1605 sender = build_indirect_ref (input_location, sender, RO_UNARY_STAR);
1607 rcv_p = (super_flag ? objc_super_type : objc_object_type);
1609 lookup_object = build_c_cast (input_location, rcv_p, lookup_object);
1611 /* Use SAVE_EXPR to avoid evaluating the receiver twice. */
1612 lookup_object = save_expr (lookup_object);
1614 method_params = tree_cons (NULL_TREE, lookup_object,
1615 tree_cons (NULL_TREE, selector,
1617 t = build3 (OBJ_TYPE_REF, sender_cast, sender, lookup_object, size_zero_node);
1618 ret_val = build_function_call (input_location, t, method_params);
1621 /* receiver != nil ? ret_val : 0 */
1625 if (TREE_CODE (ret_type) == RECORD_TYPE
1626 || TREE_CODE (ret_type) == UNION_TYPE)
1628 vec<constructor_elt, va_gc> *rtt = NULL;
1629 /* ??? CHECKME. hmmm..... think we need something more
1631 CONSTRUCTOR_APPEND_ELT (rtt, NULL_TREE, NULL_TREE);
1632 ftree = objc_build_constructor (ret_type, rtt);
1635 ftree = fold_convert (ret_type, integer_zero_node);
1637 ifexp = build_binary_op (input_location, NE_EXPR,
1639 fold_convert (rcv_p, integer_zero_node), 1);
1642 ret_val = build_conditional_expr (ifexp, ret_val, ftree, tf_warning_or_error);
1645 ret_val = build_conditional_expr (input_location,
1655 next_runtime_abi_02_build_objc_method_call (location_t loc,
1656 tree method_prototype,
1663 tree ret_type, selector;
1664 tree message_func_decl;
1665 bool check_for_nil = flag_objc_nilcheck;
1667 ret_type = method_prototype
1668 ? TREE_VALUE (TREE_TYPE (method_prototype))
1671 /* Do we need to check for nil receivers ? */
1672 /* For now, message sent to classes need no nil check. In the
1673 future, class declaration marked as weak_import must be nil
1676 || (TREE_CODE (receiver) == VAR_DECL
1677 && TREE_TYPE (receiver) == objc_class_type))
1678 check_for_nil = false;
1680 if (!targetm.calls.struct_value_rtx (0, 0)
1681 && (TREE_CODE (ret_type) == RECORD_TYPE
1682 || TREE_CODE (ret_type) == UNION_TYPE)
1683 && targetm.calls.return_in_memory (ret_type, 0))
1686 message_func_decl = umsg_id_super2_stret_fixup_decl;
1688 message_func_decl = objc_is_id (rtype)
1689 ? umsg_id_stret_fixup_decl
1690 : umsg_stret_fixup_decl;
1695 message_func_decl = umsg_id_super2_fixup_decl;
1697 message_func_decl = objc_is_id (rtype)
1698 ? umsg_id_fixup_decl
1702 selector = build_v2_selector_messenger_reference (sel_name,
1705 /* selector = &_msg; */
1706 selector = build_unary_op (loc, ADDR_EXPR, selector, 0);
1708 selector = build_c_cast (loc, (super ? objc_v2_super_selector_type
1709 : objc_v2_selector_type),
1712 /* (*_msg.messenger) (receiver, &_msg, ...); */
1713 return build_v2_build_objc_method_call (super, method_prototype,
1715 method_params, check_for_nil);
1718 /* NOTE --- Constant String Class Stuff --- */
1721 next_runtime_abi_02_setup_const_string_class_decl (void)
1723 if (!constant_string_global_id)
1725 /* Hopefully, this should not represent a serious limitation. */
1727 snprintf (buf, BUFSIZE, "OBJC_CLASS_$_%s", constant_string_class_name);
1728 constant_string_global_id = get_identifier (buf);
1731 string_class_decl = lookup_name (constant_string_global_id);
1733 /* In OBJC2 abi, constant string class reference refers to class
1734 name for NSConstantString class. This declaration may not be
1735 available yet (in fact it is not in most cases). So, declare an
1736 extern OBJC_CLASS_$_NSConstantString in its place. */
1737 if (!string_class_decl)
1739 create_extern_decl (objc_v2_class_template,
1740 IDENTIFIER_POINTER (constant_string_global_id));
1742 return (string_class_decl != NULL_TREE);
1746 next_runtime_abi_02_build_const_string_constructor (location_t loc, tree string,
1749 tree constructor, fields, var;
1750 vec<constructor_elt, va_gc> *v = NULL;
1752 /* NeXT: (NSConstantString *) & ((__builtin_ObjCString) { isa, string, length }) */
1753 fields = TYPE_FIELDS (internal_const_str_type);
1754 CONSTRUCTOR_APPEND_ELT (v, fields,
1755 build_unary_op (loc, ADDR_EXPR, string_class_decl, 0));
1757 fields = DECL_CHAIN (fields);
1758 CONSTRUCTOR_APPEND_ELT (v, fields,
1759 build_unary_op (loc, ADDR_EXPR, string, 1));
1761 /* ??? check if this should be long. */
1762 fields = DECL_CHAIN (fields);
1763 CONSTRUCTOR_APPEND_ELT (v, fields, build_int_cst (NULL_TREE, length));
1764 constructor = objc_build_constructor (internal_const_str_type, v);
1766 var = build_decl (input_location, CONST_DECL, NULL, TREE_TYPE (constructor));
1767 DECL_INITIAL (var) = constructor;
1768 TREE_STATIC (var) = 1;
1769 DECL_CONTEXT (var) = NULL;
1770 OBJCMETA (var, objc_meta, meta_const_str);
1774 /* NOTE --- NeXT V2 Metadata templates --- */
1776 /* This routine builds the following type:
1779 const char * const name; // property name
1780 const char * const attributes; // comma-delimited, encoded,
1781 // property attributes
1786 build_v2_property_template (void)
1789 tree decls, *chain = NULL;
1791 prop_record = objc_start_struct (get_identifier ("_prop_t"));
1792 /* const char * name */
1793 decls = add_field_decl (string_type_node, "name", &chain);
1795 /* const char * attribute */
1796 add_field_decl (string_type_node, "attribute", &chain);
1798 objc_finish_struct (prop_record, decls);
1804 unsigned long int *offset;
1813 build_v2_ivar_t_template (void)
1815 tree objc_ivar_id, objc_ivar_record;
1816 tree decls, *chain = NULL;
1818 objc_ivar_id = get_identifier ("_ivar_t");
1819 objc_ivar_record = objc_start_struct (objc_ivar_id);
1821 /* unsigned long int *offset; */
1822 decls = add_field_decl (build_pointer_type
1823 (TREE_TYPE (size_zero_node)), "offset", &chain);
1826 add_field_decl (string_type_node, "name", &chain);
1829 add_field_decl (string_type_node, "type", &chain);
1831 /* uint32_t alignment; */
1832 add_field_decl (integer_type_node, "alignment", &chain);
1834 /* uint32_t size; */
1835 add_field_decl (integer_type_node, "size", &chain);
1837 objc_finish_struct (objc_ivar_record, decls);
1838 return objc_ivar_record;
1842 build_metadata_templates (void)
1845 if (!objc_method_template)
1846 objc_method_template = build_method_template ();
1848 if (!objc_v2_property_template)
1849 objc_v2_property_template = build_v2_property_template ();
1851 if (!objc_v2_ivar_template)
1852 objc_v2_ivar_template = build_v2_ivar_t_template ();
1856 /* NOTE --- Output NeXT V2 Metadata --- */
1858 /* Routine builds name of Interface's main meta-data of type class_t. */
1861 objc_build_internal_classname (tree ident, bool metaclass)
1863 static char string[512];
1864 snprintf (string, 512, "%s_%s", metaclass ? "OBJC_METACLASS_$"
1866 IDENTIFIER_POINTER (ident));
1870 /* Build the name for object of type struct class_ro_t */
1873 newabi_append_ro (const char *name)
1877 static char string[BUFSIZE];
1878 dollar = strchr (name, '$');
1879 gcc_assert (dollar);
1882 strncpy (p, name, (int)(dollar - name));
1883 p += (int)(dollar - name);
1884 sprintf (p, "RO_%s", dollar);
1888 /* Build the struct message_ref_t msg =
1889 {objc_msgSend_fixup_xxx, @selector(func)}
1893 void build_v2_message_ref_translation_table (void)
1898 if (!vec_safe_length (msgrefs))
1901 FOR_EACH_VEC_ELT (*msgrefs, count, ref)
1903 vec<constructor_elt, va_gc> *initializer;
1904 tree expr, constructor;
1905 tree struct_type = TREE_TYPE (ref->refdecl);
1906 location_t loc = DECL_SOURCE_LOCATION (ref->refdecl);
1909 /* First 'IMP messenger' field... */
1910 expr = build_unary_op (loc, ADDR_EXPR, ref->func, 0);
1911 expr = convert (objc_v2_imp_type, expr);
1912 CONSTRUCTOR_APPEND_ELT (initializer, NULL_TREE, expr);
1914 /* ... then 'SEL name' field. */
1915 expr = build_selector (ref->selname);
1916 CONSTRUCTOR_APPEND_ELT (initializer, NULL_TREE, expr);
1917 constructor = objc_build_constructor (struct_type, initializer);
1918 finish_var_decl (ref->refdecl, constructor);
1922 /* Build decl = initializer; for each externally visible class
1926 build_v2_classrefs_table (void)
1929 ident_data_tuple *ref;
1931 if (!vec_safe_length (classrefs))
1934 FOR_EACH_VEC_ELT (*classrefs, count, ref)
1936 tree expr = ref->ident;
1937 tree decl = ref->data;
1938 /* Interface with no implementation and yet one of its messages
1939 has been used. Need to generate a full address-of tree for it
1941 if (TREE_CODE (expr) == IDENTIFIER_NODE)
1943 const char *name = objc_build_internal_classname (expr, false);
1944 expr = create_extern_decl (objc_v2_class_template, name);
1945 expr = convert (objc_class_type, build_fold_addr_expr (expr));
1947 /* The runtime wants this, even if it appears unused, so we must force the
1949 DECL_PRESERVE_P (decl) = 1; */
1950 finish_var_decl (decl, expr);
1954 /* Build decl = initializer; for each externally visible super class
1958 build_v2_super_classrefs_table (bool metaclass)
1961 ident_data_tuple *ref;
1962 vec<ident_data_tuple, va_gc> *list = metaclass ? metaclass_super_refs
1965 if (!vec_safe_length (list))
1968 FOR_EACH_VEC_ELT (*list, count, ref)
1970 tree expr = ref->ident;
1971 tree decl = ref->data;
1972 /* Interface with no implementation and yet one of its messages
1973 has been used. Need to generate a full address-of tree for it
1975 if (TREE_CODE (expr) == IDENTIFIER_NODE)
1977 const char * name = objc_build_internal_classname (expr, metaclass);
1978 expr = create_extern_decl (objc_v2_class_template, name);
1979 expr = convert (objc_class_type, build_fold_addr_expr (expr));
1981 finish_var_decl (decl, expr);
1985 /* Add the global class meta-data declaration to the list which later
1986 on ends up in the __class_list section. */
1988 static GTY(()) vec<tree, va_gc> *class_list;
1991 objc_v2_add_to_class_list (tree global_class_decl)
1993 vec_safe_push (class_list, global_class_decl);
1996 static GTY(()) vec<tree, va_gc> *nonlazy_class_list;
1998 /* Add the global class meta-data declaration to the list which later
1999 on ends up in the __nonlazy_class section. */
2002 objc_v2_add_to_nonlazy_class_list (tree global_class_decl)
2004 vec_safe_push (nonlazy_class_list, global_class_decl);
2007 static GTY(()) vec<tree, va_gc> *category_list;
2009 /* Add the category meta-data declaration to the list which later on
2010 ends up in the __nonlazy_category section. */
2013 objc_v2_add_to_category_list (tree decl)
2015 vec_safe_push (category_list, decl);
2018 static GTY(()) vec<tree, va_gc> *nonlazy_category_list;
2020 /* Add the category meta-data declaration to the list which later on
2021 ends up in the __category_list section. */
2024 objc_v2_add_to_nonlazy_category_list (tree decl)
2026 vec_safe_push (nonlazy_category_list, decl);
2030 has_load_impl (tree clsmeth)
2034 tree id = METHOD_SEL_NAME (clsmeth);
2035 if (IDENTIFIER_LENGTH (id) == 4
2036 && strncmp (IDENTIFIER_POINTER (id), "load", 4) == 0)
2038 clsmeth = DECL_CHAIN (clsmeth);
2044 /* Build a __{class,category}_list section table containing address of
2045 all @implemented {class,category} meta-data. */
2048 build_v2_address_table (vec<tree, va_gc> *src, const char *nam, tree attr)
2051 tree type, decl, expr;
2052 vec<constructor_elt, va_gc> *initlist = NULL;
2054 if (!vec_safe_length (src))
2057 FOR_EACH_VEC_ELT (*src, count, decl)
2060 tree purpose = build_int_cst (NULL_TREE, count);
2062 tree purpose = NULL_TREE;
2064 expr = convert (objc_class_type, build_fold_addr_expr (decl));
2065 CONSTRUCTOR_APPEND_ELT (initlist, purpose, expr);
2067 gcc_assert (count > 0);
2068 type = build_array_type (objc_class_type,
2069 build_index_type (build_int_cst (NULL_TREE, count - 1)));
2070 decl = start_var_decl (type, nam);
2071 /* The runtime wants this, even if it appears unused, so we must
2072 force the output. */
2073 DECL_PRESERVE_P (decl) = 1;
2074 expr = objc_build_constructor (type, initlist);
2075 OBJCMETA (decl, objc_meta, attr);
2076 finish_var_decl (decl, expr);
2079 /* Build decl = initializer; for each protocol referenced in
2080 @protocol(MyProt) expression. Refs as built in the entry section
2084 build_v2_protocol_list_translation_table (void)
2087 prot_list_entry *ref;
2092 FOR_EACH_VEC_ELT (*protrefs, count, ref)
2096 gcc_assert (TREE_CODE (ref->id) == PROTOCOL_INTERFACE_TYPE);
2097 snprintf (buf, BUFSIZE, "_OBJC_Protocol_%s",
2098 IDENTIFIER_POINTER (PROTOCOL_NAME (ref->id)));
2099 expr = start_var_decl (objc_v2_protocol_template, buf);
2100 expr = convert (objc_protocol_type, build_fold_addr_expr (expr));
2101 finish_var_decl (ref->refdecl, expr);
2103 /* TODO: Maybe we could explicitly delete the vec. now? */
2106 static GTY (()) vec<prot_list_entry, va_gc> *protlist;
2108 /* Add the local protocol meta-data declaration to the list which
2109 later on ends up in the __protocol_list section. */
2112 objc_add_to_protocol_list (tree protocol_interface_decl, tree protocol_decl)
2116 /* Arbitrary init count. */
2117 vec_alloc (protlist, 32);
2118 e.id = protocol_interface_decl;
2119 e.refdecl = protocol_decl;
2120 vec_safe_push (protlist, e);
2123 /* Build the __protocol_list section table containing address of all
2124 generate protocol_t meta-data. */
2127 build_v2_protocol_list_address_table (void)
2130 prot_list_entry *ref;
2131 if (!vec_safe_length (protlist))
2134 FOR_EACH_VEC_ELT (*protlist, count, ref)
2138 gcc_assert (ref->id && TREE_CODE (ref->id) == PROTOCOL_INTERFACE_TYPE);
2139 snprintf (buf, BUFSIZE, "_OBJC_LabelProtocol_%s",
2140 IDENTIFIER_POINTER (PROTOCOL_NAME (ref->id)));
2141 decl = create_global_decl (objc_protocol_type, buf);
2142 expr = convert (objc_protocol_type, build_fold_addr_expr (ref->refdecl));
2143 OBJCMETA (decl, objc_meta, meta_label_protocollist);
2144 finish_var_decl (decl, expr);
2147 /* TODO: delete the vec. */
2148 /* TODO: upgrade to the clang/llvm hidden version. */
2151 /* This routine declares a variable to hold meta data for 'struct
2152 protocol_list_t'. */
2155 generate_v2_protocol_list (tree i_or_p, tree klass_ctxt)
2157 tree refs_decl, lproto, e, plist, ptempl_p_t;
2159 vec<constructor_elt, va_gc> *initlist = NULL;
2162 if (TREE_CODE (i_or_p) == CLASS_INTERFACE_TYPE
2163 || TREE_CODE (i_or_p) == CATEGORY_INTERFACE_TYPE)
2164 plist = CLASS_PROTOCOL_LIST (i_or_p);
2165 else if (TREE_CODE (i_or_p) == PROTOCOL_INTERFACE_TYPE)
2166 plist = PROTOCOL_LIST (i_or_p);
2171 for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto))
2172 if (TREE_CODE (TREE_VALUE (lproto)) == PROTOCOL_INTERFACE_TYPE
2173 && PROTOCOL_FORWARD_DECL (TREE_VALUE (lproto)))
2176 /* Build initializer. */
2178 ptempl_p_t = build_pointer_type (objc_v2_protocol_template);
2179 e = build_int_cst (ptempl_p_t, size);
2180 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, e);
2182 for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto))
2184 tree pval = TREE_VALUE (lproto);
2186 if (TREE_CODE (pval) == PROTOCOL_INTERFACE_TYPE
2187 && PROTOCOL_FORWARD_DECL (pval))
2189 tree fwref = PROTOCOL_FORWARD_DECL (pval);
2190 location_t loc = DECL_SOURCE_LOCATION (fwref) ;
2191 e = build_unary_op (loc, ADDR_EXPR, fwref, 0);
2192 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, e);
2196 /* static struct protocol_list_t *list[size]; */
2198 switch (TREE_CODE (i_or_p))
2200 case PROTOCOL_INTERFACE_TYPE:
2201 snprintf (buf, BUFSIZE, "_OBJC_ProtocolRefs_%s",
2202 IDENTIFIER_POINTER (PROTOCOL_NAME (i_or_p)));
2204 case CLASS_INTERFACE_TYPE:
2205 snprintf (buf, BUFSIZE, "_OBJC_ClassProtocols_%s",
2206 IDENTIFIER_POINTER (CLASS_NAME (i_or_p)));
2208 case CATEGORY_INTERFACE_TYPE:
2209 snprintf (buf, BUFSIZE, "_OBJC_CategoryProtocols_%s_%s",
2210 IDENTIFIER_POINTER (CLASS_NAME (klass_ctxt)),
2211 IDENTIFIER_POINTER (CLASS_SUPER_NAME (klass_ctxt)));
2217 refs_decl = start_var_decl (build_sized_array_type (ptempl_p_t, size+1),
2219 /* ObjC2 puts all these in the base section. */
2220 OBJCMETA (refs_decl, objc_meta, meta_base);
2221 DECL_PRESERVE_P (refs_decl) = 1;
2222 finish_var_decl (refs_decl,
2223 objc_build_constructor (TREE_TYPE (refs_decl),initlist));
2227 /* This routine builds one 'struct method_t' initializer list. Note
2228 that the old ABI is supposed to build 'struct objc_method' which
2229 has 3 fields, but it does not build the initialization expression
2230 for 'method_imp' which for protocols is NULL any way. To be
2231 consistant with declaration of 'struct method_t', in the new ABI we
2232 set the method_t.imp to NULL. */
2235 build_v2_descriptor_table_initializer (tree type, tree entries)
2237 vec<constructor_elt, va_gc> *initlist = NULL;
2240 vec<constructor_elt, va_gc> *eltlist = NULL;
2241 CONSTRUCTOR_APPEND_ELT (eltlist, NULL_TREE,
2242 build_selector (METHOD_SEL_NAME (entries)));
2243 CONSTRUCTOR_APPEND_ELT (eltlist, NULL_TREE,
2244 add_objc_string (METHOD_ENCODING (entries),
2246 CONSTRUCTOR_APPEND_ELT (eltlist, NULL_TREE, null_pointer_node);
2248 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE,
2249 objc_build_constructor (type, eltlist));
2250 entries = TREE_CHAIN (entries);
2254 return objc_build_constructor (build_array_type (type, 0), initlist);
2257 /* struct method_list_t
2260 uint32_t method_count;
2261 struct objc_method method_list[method_count];
2265 build_v2_method_list_template (tree list_type, int size)
2267 tree method_list_t_record;
2268 tree array_type, decls, *chain = NULL;
2270 method_list_t_record = objc_start_struct (NULL_TREE);
2272 /* uint32_t const entsize; */
2273 decls = add_field_decl (integer_type_node, "entsize", &chain);
2275 /* int method_count; */
2276 add_field_decl (integer_type_node, "method_count", &chain);
2278 /* struct objc_method method_list[]; */
2279 array_type = build_sized_array_type (list_type, size);
2280 add_field_decl (array_type, "method_list", &chain);
2282 objc_finish_struct (method_list_t_record, decls);
2283 return method_list_t_record;
2286 /* Note, as above that we are building to the objc_method_template
2287 which has the *imp field. ABI0/1 build with
2288 objc_method_prototype_template which is missing this field. */
2290 generate_v2_meth_descriptor_table (tree chain, tree protocol,
2291 const char *prefix, tree attr)
2293 tree method_list_template, initlist, decl, methods;
2295 vec<constructor_elt, va_gc> *v = NULL;
2298 if (!chain || !prefix)
2305 if (! METHOD_ENCODING (methods))
2306 METHOD_ENCODING (methods) = encode_method_prototype (methods);
2307 methods = TREE_CHAIN (methods);
2312 method_list_template = build_v2_method_list_template (objc_method_template,
2314 snprintf (buf, BUFSIZE, "%s_%s", prefix,
2315 IDENTIFIER_POINTER (PROTOCOL_NAME (protocol)));
2317 decl = start_var_decl (method_list_template, buf);
2319 entsize = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_method_template));
2320 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, entsize));
2321 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, size));
2323 build_v2_descriptor_table_initializer (objc_method_template,
2325 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, initlist);
2326 /* Get into the right section. */
2327 OBJCMETA (decl, objc_meta, attr);
2328 finish_var_decl (decl, objc_build_constructor (method_list_template, v));
2332 /* This routine builds the initializer list to initialize the 'struct
2333 _prop_t prop_list[]' field of 'struct _prop_list_t' meta-data. */
2336 build_v2_property_table_initializer (tree type, tree context)
2339 vec<constructor_elt, va_gc> *inits = NULL;
2340 if (TREE_CODE (context) == PROTOCOL_INTERFACE_TYPE)
2341 x = CLASS_PROPERTY_DECL (context);
2343 x = IMPL_PROPERTY_DECL (context);
2345 for (; x; x = TREE_CHAIN (x))
2347 vec<constructor_elt, va_gc> *elemlist = NULL;
2348 /* NOTE! sections where property name/attribute go MUST change
2350 tree attribute, name_ident = PROPERTY_NAME (x);
2352 CONSTRUCTOR_APPEND_ELT (elemlist, NULL_TREE,
2353 add_objc_string (name_ident, prop_names_attr));
2355 attribute = objc_v2_encode_prop_attr (x);
2356 CONSTRUCTOR_APPEND_ELT (elemlist, NULL_TREE,
2357 add_objc_string (attribute, prop_names_attr));
2359 CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
2360 objc_build_constructor (type, elemlist));
2363 return objc_build_constructor (build_array_type (type, 0),inits);
2366 /* This routine builds the following type:
2369 uint32_t entsize; // sizeof (struct _prop_t)
2370 uint32_t prop_count;
2371 struct _prop_t prop_list [prop_count];
2376 build_v2_property_list_template (tree list_type, int size)
2378 tree property_list_t_record;
2379 tree array_type, decls, *chain = NULL;
2382 property_list_t_record = objc_start_struct (NULL_TREE);
2384 /* uint32_t const entsize; */
2385 decls = add_field_decl (integer_type_node, "entsize", &chain);
2387 /* int prop_count; */
2388 add_field_decl (integer_type_node, "prop_count", &chain);
2390 /* struct _prop_t prop_list[]; */
2391 array_type = build_sized_array_type (list_type, size);
2392 add_field_decl (array_type, "prop_list", &chain);
2394 objc_finish_struct (property_list_t_record, decls);
2395 return property_list_t_record;
2398 /* Top-level routine to generate property tables for each
2402 generate_v2_property_table (tree context, tree klass_ctxt)
2404 tree x, decl, initlist, property_list_template;
2405 bool is_proto = false;
2406 vec<constructor_elt, va_gc> *inits = NULL;
2407 int init_val, size = 0;
2412 gcc_assert (TREE_CODE (context) == PROTOCOL_INTERFACE_TYPE);
2413 x = CLASS_PROPERTY_DECL (context);
2417 x = IMPL_PROPERTY_DECL (klass_ctxt);
2419 for (; x; x = TREE_CHAIN (x))
2425 property_list_template =
2426 build_v2_property_list_template (objc_v2_property_template,
2429 initlist = build_v2_property_table_initializer (objc_v2_property_template,
2433 init_val = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_property_template));
2435 snprintf (buf, BUFSIZE, "_OBJC_ProtocolPropList_%s",
2436 IDENTIFIER_POINTER (PROTOCOL_NAME (context)));
2438 snprintf (buf, BUFSIZE, "_OBJC_ClassPropList_%s",
2439 IDENTIFIER_POINTER (CLASS_NAME (klass_ctxt)));
2441 decl = start_var_decl (property_list_template, buf);
2443 CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
2444 build_int_cst (NULL_TREE, init_val));
2445 CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
2446 build_int_cst (NULL_TREE, size));
2447 CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, initlist);
2449 OBJCMETA (decl, objc_meta, meta_base);
2450 finish_var_decl (decl, objc_build_constructor (TREE_TYPE (decl), inits));
2455 build_v2_protocol_initializer (tree type, tree protocol_name, tree protocol_list,
2456 tree inst_methods, tree class_methods,
2457 tree opt_ins_meth, tree opt_cls_meth,
2462 vec<constructor_elt, va_gc> *inits = NULL;
2464 /* TODO: find a better representation of location from the inputs. */
2465 loc = UNKNOWN_LOCATION;
2467 /* This is NULL for the new ABI. */
2468 CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
2469 convert (objc_object_type, null_pointer_node));
2471 CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, protocol_name);
2472 CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, protocol_list);
2474 ttyp = objc_method_proto_list_ptr;
2476 expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, inst_methods, 0));
2478 expr = convert (ttyp, null_pointer_node);
2479 CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
2482 expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, class_methods, 0));
2484 expr = convert (ttyp, null_pointer_node);
2485 CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
2488 expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, opt_ins_meth, 0));
2490 expr = convert (ttyp, null_pointer_node);
2491 CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
2494 expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, opt_cls_meth, 0));
2496 expr = convert (ttyp, null_pointer_node);
2497 CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
2499 ttyp = objc_prop_list_ptr;
2501 expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, property_list, 0));
2503 expr = convert (ttyp, null_pointer_node);
2504 CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
2506 /* const uint32_t size; = sizeof(struct protocol_t) */
2507 expr = build_int_cst (integer_type_node,
2508 TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_protocol_template)));
2509 CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
2510 /* const uint32_t flags; = 0 */
2511 CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, integer_zero_node);
2513 return objc_build_constructor (type, inits);
2516 /* Main routine to build all meta data for all protocols used in a
2517 translation unit. */
2520 generate_v2_protocols (void)
2525 if (!protocol_chain)
2528 /* If a protocol was directly referenced, pull in indirect
2530 for (p = protocol_chain; p; p = TREE_CHAIN (p))
2531 if (PROTOCOL_FORWARD_DECL (p) && PROTOCOL_LIST (p))
2532 generate_protocol_references (PROTOCOL_LIST (p));
2534 for (p = protocol_chain; p; p = TREE_CHAIN (p))
2537 tree inst_meth, class_meth, opt_inst_meth, opt_class_meth, props;
2538 tree decl, initlist, protocol_name_expr, refs_decl, refs_expr;
2540 /* If protocol wasn't referenced, don't generate any code. */
2541 decl = PROTOCOL_FORWARD_DECL (p);
2546 loc = DECL_SOURCE_LOCATION (decl);
2550 generate_v2_meth_descriptor_table (PROTOCOL_NST_METHODS (p), p,
2551 "_OBJC_ProtocolInstanceMethods",
2552 meta_proto_nst_meth);
2555 generate_v2_meth_descriptor_table (PROTOCOL_CLS_METHODS (p), p,
2556 "_OBJC_ProtocolClassMethods",
2557 meta_proto_cls_meth);
2560 generate_v2_meth_descriptor_table (PROTOCOL_OPTIONAL_NST_METHODS (p), p,
2561 "_OBJC_OptProtocolInstMethods",
2562 meta_proto_nst_meth);
2565 generate_v2_meth_descriptor_table (PROTOCOL_OPTIONAL_CLS_METHODS (p), p,
2566 "_OBJC_OptProtocolClassMethods",
2567 meta_proto_cls_meth);
2569 if (PROTOCOL_LIST (p))
2570 refs_decl = generate_v2_protocol_list (p, NULL_TREE);
2574 /* static struct objc_protocol _OBJC_Protocol_<mumble>; */
2575 protocol_name_expr = add_objc_string (PROTOCOL_NAME (p), class_names);
2578 refs_expr = convert (build_pointer_type (objc_v2_protocol_template),
2579 build_unary_op (loc, ADDR_EXPR, refs_decl, 0));
2581 refs_expr = build_int_cst (NULL_TREE, 0);
2583 props = generate_v2_property_table (p, NULL_TREE);
2585 initlist = build_v2_protocol_initializer (TREE_TYPE (decl),
2586 protocol_name_expr, refs_expr,
2587 inst_meth, class_meth,
2588 opt_inst_meth, opt_class_meth,
2590 finish_var_decl (decl, initlist);
2591 objc_add_to_protocol_list (p, decl);
2596 /* Make sure we get the Protocol class linked in - reference
2598 p = objc_v2_get_class_reference (get_identifier (PROTOCOL_OBJECT_CLASS_NAME));
2599 /* ... but since we don't specifically use the reference... we
2600 need to force it. */
2601 DECL_PRESERVE_P (p) = 1;
2606 generate_v2_dispatch_table (tree chain, const char *name, tree attr)
2608 tree decl, method_list_template, initlist;
2609 vec<constructor_elt, va_gc> *v = NULL;
2612 if (!chain || !name || !(size = list_length (chain)))
2615 method_list_template
2616 = build_v2_method_list_template (objc_method_template, size);
2618 = build_dispatch_table_initializer (objc_method_template, chain);
2620 decl = start_var_decl (method_list_template, name);
2622 init_val = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_method_template));
2623 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
2624 build_int_cst (integer_type_node, init_val));
2625 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
2626 build_int_cst (integer_type_node, size));
2627 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, initlist);
2629 OBJCMETA (decl, objc_meta, attr);
2630 finish_var_decl (decl,
2631 objc_build_constructor (TREE_TYPE (decl), v));
2635 /* Init a category. */
2637 build_v2_category_initializer (tree type, tree cat_name, tree class_name,
2638 tree inst_methods, tree class_methods,
2639 tree protocol_list, tree property_list,
2643 vec<constructor_elt, va_gc> *v = NULL;
2645 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, cat_name);
2646 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, class_name);
2648 ltyp = objc_method_list_ptr;
2650 expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, inst_methods, 0));
2652 expr = convert (ltyp, null_pointer_node);
2653 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
2656 expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, class_methods, 0));
2658 expr = convert (ltyp, null_pointer_node);
2659 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
2661 /* protocol_list = */
2662 ltyp = build_pointer_type (objc_v2_protocol_template);
2664 expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, protocol_list, 0));
2666 expr = convert (ltyp, null_pointer_node);
2667 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
2669 ltyp = objc_prop_list_ptr;
2671 expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, property_list, 0));
2673 expr = convert (ltyp, null_pointer_node);
2674 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
2676 return objc_build_constructor (type, v);
2679 /* static struct category_t _OBJC_CATEGORY_$_<name> = { ... }; */
2682 generate_v2_category (struct imp_entry *impent)
2684 tree initlist, cat_name_expr, class_name_expr;
2685 tree protocol_decl, category, props, t;
2686 tree inst_methods = NULL_TREE, class_methods = NULL_TREE;
2687 tree cat = impent->imp_context;
2688 tree cat_decl = impent->class_decl;
2692 loc = DECL_SOURCE_LOCATION (cat_decl);
2694 /* ??? not sure this is really necessary, the following references should
2695 force appropriate linkage linkage...
2696 -- but ... ensure a reference to the class... */
2697 t = objc_v2_get_class_reference (CLASS_NAME (cat));
2698 /* ... which we ignore so force it out.. */
2699 DECL_PRESERVE_P (t) = 1;
2701 snprintf (buf, BUFSIZE, "OBJC_CLASS_$_%s", IDENTIFIER_POINTER (CLASS_NAME (cat)));
2702 class_name_expr = create_extern_decl (objc_v2_class_template, buf);
2703 class_name_expr = build_fold_addr_expr (class_name_expr);
2705 cat_name_expr = add_objc_string (CLASS_SUPER_NAME (cat), class_names);
2706 category = lookup_category (impent->imp_template, CLASS_SUPER_NAME (cat));
2708 if (category && CLASS_PROTOCOL_LIST (category))
2710 generate_protocol_references (CLASS_PROTOCOL_LIST (category));
2711 protocol_decl = generate_v2_protocol_list (category, cat);
2714 protocol_decl = NULL_TREE;
2716 /* decl = update_var_decl(impent->class_decl); */
2718 props = generate_v2_property_table (NULL_TREE, cat);
2720 if (CLASS_NST_METHODS (cat))
2722 snprintf (buf, BUFSIZE, "_OBJC_CategoryInstanceMethods_%s_%s",
2723 IDENTIFIER_POINTER (CLASS_NAME (cat)),
2724 IDENTIFIER_POINTER (CLASS_SUPER_NAME (cat)));
2725 inst_methods = generate_v2_dispatch_table (CLASS_NST_METHODS (cat), buf,
2729 if (CLASS_CLS_METHODS (cat))
2731 snprintf (buf, BUFSIZE, "_OBJC_CategoryClassMethods_%s_%s",
2732 IDENTIFIER_POINTER (CLASS_NAME (cat)),
2733 IDENTIFIER_POINTER (CLASS_SUPER_NAME (cat)));
2734 class_methods = generate_v2_dispatch_table (CLASS_CLS_METHODS (cat), buf,
2738 initlist = build_v2_category_initializer (TREE_TYPE (cat_decl),
2739 cat_name_expr, class_name_expr,
2740 inst_methods, class_methods,
2741 protocol_decl, props, loc);
2743 finish_var_decl (cat_decl, initlist);
2744 impent->class_decl = cat_decl;
2746 /* Add to list of pointers in __category_list section. */
2747 objc_v2_add_to_category_list (cat_decl);
2748 if (has_load_impl (CLASS_CLS_METHODS (impent->imp_context)))
2749 objc_v2_add_to_nonlazy_category_list (cat_decl);
2752 /* This routine declares a variable to hold the offset for ivar
2753 FIELD_DECL. Variable name is .objc_ivar.ClassName.IvarName. */
2755 typedef struct GTY(()) ivarref_entry
2761 static GTY (()) vec<ivarref_entry, va_gc> *ivar_offset_refs;
2764 ivar_offset_ref (tree class_name, tree field_decl)
2766 tree decl, field_decl_id;
2771 create_ivar_offset_name (buf, class_name, field_decl);
2772 field_decl_id = get_identifier (buf);
2774 if (ivar_offset_refs)
2778 FOR_EACH_VEC_ELT (*ivar_offset_refs, count, ref)
2779 if (DECL_NAME (ref->decl) == field_decl_id)
2783 /* Somewhat arbitrary initial provision. */
2784 vec_alloc (ivar_offset_refs, 32);
2786 /* We come here if we don't find a match or at the start. */
2787 global_var = (TREE_PUBLIC (field_decl) || TREE_PROTECTED (field_decl));
2789 decl = create_global_decl (TREE_TYPE (size_zero_node), buf);
2791 decl = create_hidden_decl (TREE_TYPE (size_zero_node), buf);
2793 /* Make sure it ends up in an ObjC section. */
2794 OBJCMETA (decl, objc_meta, meta_base);
2797 e.offset = byte_position (field_decl);
2798 vec_safe_push (ivar_offset_refs, e);
2802 /* This routine builds initializer-list needed to initialize 'struct
2803 ivar_t list[count] of 'struct ivar_list_t' meta data. TYPE is
2804 'struct ivar_t' and FIELD_DECL is list of ivars for the target
2808 build_v2_ivar_list_initializer (tree class_name, tree type, tree field_decl)
2810 vec<constructor_elt, va_gc> *inits = NULL;
2814 vec<constructor_elt, va_gc> *ivar = NULL;
2818 /* Unnamed bitfields are ignored. */
2819 if (!DECL_NAME (field_decl))
2821 field_decl = DECL_CHAIN (field_decl);
2826 CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE,
2827 build_unary_op (input_location,
2829 ivar_offset_ref (class_name,
2833 CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE,
2834 add_objc_string (DECL_NAME (field_decl),
2838 id = add_objc_string (encode_field_decl (field_decl),
2840 CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE, id);
2842 /* Set alignment. */
2843 val = DECL_ALIGN_UNIT (field_decl);
2844 val = exact_log2 (val);
2845 CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE,
2846 build_int_cst (integer_type_node, val));
2849 val = TREE_INT_CST_LOW (DECL_SIZE_UNIT (field_decl));
2850 CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE,
2851 build_int_cst (integer_type_node, val));
2853 CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
2854 objc_build_constructor (type, ivar));
2857 field_decl = DECL_CHAIN (field_decl);
2858 while (field_decl && TREE_CODE (field_decl) != FIELD_DECL);
2862 return objc_build_constructor (build_array_type (type, 0), inits);
2870 struct iver_t list[count];
2875 build_v2_ivar_list_t_template (tree list_type, int size)
2877 tree objc_ivar_list_record;
2878 tree decls, *chain = NULL;
2881 objc_ivar_list_record = objc_start_struct (NULL_TREE);
2883 /* uint32 entsize; */
2884 decls = add_field_decl (integer_type_node, "entsize", &chain);
2887 add_field_decl (integer_type_node, "count", &chain);
2889 /* struct objc_ivar ivar_list[]; */
2890 add_field_decl (build_sized_array_type (list_type, size),
2893 objc_finish_struct (objc_ivar_list_record, decls);
2894 return objc_ivar_list_record;
2897 /* This routine declares a static variable of type 'struct
2898 ivar_list_t' and initializes it. chain is the source of the data,
2899 name is the name for the var. attr is the meta-data section tag
2900 attribute. templ is the implementation template for the class. */
2903 generate_v2_ivars_list (tree chain, const char *name, tree attr, tree templ)
2905 tree decl, initlist, ivar_list_template;
2906 vec<constructor_elt, va_gc> *inits = NULL;
2907 int size, ivar_t_size;
2909 if (!chain || !name || !(size = ivar_list_length (chain)))
2912 generating_instance_variables = 1;
2913 ivar_list_template = build_v2_ivar_list_t_template (objc_v2_ivar_template,
2916 initlist = build_v2_ivar_list_initializer (CLASS_NAME (templ),
2917 objc_v2_ivar_template, chain);
2918 ivar_t_size = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_ivar_template));
2920 decl = start_var_decl (ivar_list_template, name);
2921 CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
2922 build_int_cst (integer_type_node, ivar_t_size));
2923 CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
2924 build_int_cst (integer_type_node, size));
2925 CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, initlist);
2926 OBJCMETA (decl, objc_meta, attr);
2927 finish_var_decl (decl, objc_build_constructor (TREE_TYPE (decl), inits));
2928 generating_instance_variables = 0;
2932 /* Routine to build initializer list to initialize objects of type
2936 build_v2_class_t_initializer (tree type, tree isa, tree superclass,
2937 tree ro, tree cache, tree vtable)
2939 vec<constructor_elt, va_gc> *initlist = NULL;
2942 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, isa);
2945 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, superclass);
2949 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, cache);
2951 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, null_pointer_node);
2955 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, vtable);
2957 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, null_pointer_node);
2960 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, ro);
2962 return objc_build_constructor (type, initlist);
2965 /* Routine to build object of struct class_ro_t { ... }; */
2968 build_v2_class_ro_t_initializer (tree type, tree name,
2969 unsigned int flags, unsigned int instanceStart,
2970 unsigned int instanceSize,
2972 tree baseMethods, tree baseProtocols,
2973 tree ivars, tree property_list)
2975 tree expr, unsigned_char_star, ltyp;
2977 vec<constructor_elt, va_gc> *initlist = NULL;
2979 /* TODO: fish out the real location from somewhere. */
2980 loc = UNKNOWN_LOCATION;
2983 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE,
2984 build_int_cst (integer_type_node, flags));
2987 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE,
2988 build_int_cst (integer_type_node, instanceStart));
2991 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE,
2992 build_int_cst (integer_type_node, instanceSize));
2994 /* This ABI is currently only used on m64 NeXT. We always
2995 explicitly declare the alignment padding. */
2996 /* reserved, pads alignment. */
2997 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE,
2998 build_int_cst (integer_type_node, 0));
3001 unsigned_char_star = build_pointer_type (unsigned_char_type_node);
3005 expr = convert (unsigned_char_star, null_pointer_node);
3006 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, expr);
3009 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, default_conversion (name));
3012 ltyp = objc_method_list_ptr;
3014 expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, baseMethods, 0));
3016 expr = convert (ltyp, null_pointer_node);
3017 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, expr);
3020 ltyp = build_pointer_type (xref_tag (RECORD_TYPE,
3021 get_identifier (UTAG_V2_PROTOCOL_LIST)));
3023 expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, baseProtocols, 0));
3025 expr = convert (ltyp, null_pointer_node);
3026 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, expr);
3029 ltyp = objc_v2_ivar_list_ptr;
3031 expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, ivars, 0));
3033 expr = convert (ltyp, null_pointer_node);
3034 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, expr);
3036 /* TODO: We don't yet have the weak/strong stuff... */
3037 /* weakIvarLayout */
3038 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE,
3039 convert (unsigned_char_star, null_pointer_node));
3042 ltyp = objc_prop_list_ptr;
3044 expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, property_list, 0));
3046 expr = convert (ltyp, null_pointer_node);
3047 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, expr);
3048 return objc_build_constructor (type, initlist);
3051 static GTY (()) vec<ident_data_tuple, va_gc> *ehtype_list;
3053 /* Record a name as needing a catcher. */
3055 objc_v2_add_to_ehtype_list (tree name)
3061 ident_data_tuple *ref;
3063 FOR_EACH_VEC_ELT (*ehtype_list, count, ref)
3064 if (ref->ident == name)
3065 return; /* Already entered. */
3068 /* Arbitrary initial count. */
3069 vec_alloc (ehtype_list, 8);
3071 /* Not found, or new list. */
3074 vec_safe_push (ehtype_list, e);
3078 generate_v2_class_structs (struct imp_entry *impent)
3080 tree decl, name_expr, initlist, protocol_decl, metaclass_decl, class_decl;
3081 tree field, firstIvar, chain;
3082 tree class_superclass_expr, metaclass_superclass_expr, props;
3083 /* TODO: figure out how to compute this. */
3084 tree ivarLayout = NULL_TREE;
3085 tree my_super_id = NULL_TREE, root_expr = NULL_TREE;
3086 tree inst_methods = NULL_TREE, class_methods = NULL_TREE;
3087 tree inst_ivars = NULL_TREE, class_ivars = NULL_TREE;
3090 unsigned int instanceStart, instanceSize;
3091 unsigned int flags = 0x01; /* RO_META */
3092 int cls_flags = impent->has_cxx_cdtors ? OBJC2_CLS_HAS_CXX_STRUCTORS
3095 class_decl = impent->class_decl;
3096 metaclass_decl = impent->meta_decl;
3097 loc = DECL_SOURCE_LOCATION (class_decl);
3099 DECL_EXTERNAL (class_decl) = DECL_EXTERNAL (metaclass_decl) = 0;
3100 TREE_PUBLIC (class_decl) = TREE_PUBLIC (metaclass_decl) = 1;
3102 gcc_assert (!CP_DECL_CONTEXT (class_decl) || CP_DECL_CONTEXT (class_decl) == global_namespace);
3103 gcc_assert (!CP_DECL_CONTEXT (metaclass_decl) || CP_DECL_CONTEXT (metaclass_decl) == global_namespace);
3106 /* Generation of data for meta class. */
3107 my_super_id = CLASS_SUPER_NAME (impent->imp_template);
3110 /* Compute reference to root's name. For a meta class, "isa" is
3111 a reference to the root class name. */
3112 tree my_root_id = my_super_id;
3113 tree my_root_int, interface;
3116 my_root_int = lookup_interface (my_root_id);
3118 if (my_root_int && CLASS_SUPER_NAME (my_root_int))
3119 my_root_id = CLASS_SUPER_NAME (my_root_int);
3125 /* {extern} struct class_t OBJC_METACLASS_$_<my_root_int>
3126 create extern if not already declared. */
3127 snprintf (buf, BUFSIZE, "OBJC_METACLASS_$_%s",
3128 IDENTIFIER_POINTER (CLASS_NAME (my_root_int)));
3129 root_expr = create_extern_decl (objc_v2_class_template, buf);
3130 root_expr = build_fold_addr_expr (root_expr);
3132 /* Install class `isa' and `super' pointers at runtime. */
3133 interface = lookup_interface (my_super_id);
3134 gcc_assert (interface);
3135 /* Similarly, for OBJC_CLASS_$_<interface>... */
3136 snprintf (buf, BUFSIZE, "OBJC_CLASS_$_%s",
3137 IDENTIFIER_POINTER (CLASS_NAME (interface)));
3138 class_superclass_expr = create_extern_decl (objc_v2_class_template, buf);
3139 class_superclass_expr = build_fold_addr_expr (class_superclass_expr);
3140 /* ... and for OBJC_METACLASS_$_<interface>. */
3141 snprintf (buf, BUFSIZE, "OBJC_METACLASS_$_%s",
3142 IDENTIFIER_POINTER (CLASS_NAME (interface)));
3143 metaclass_superclass_expr = create_extern_decl (objc_v2_class_template, buf);
3144 metaclass_superclass_expr = build_fold_addr_expr (metaclass_superclass_expr);
3149 root_expr = build_unary_op (loc, ADDR_EXPR, metaclass_decl, 0);
3150 metaclass_superclass_expr = build_unary_op (loc, ADDR_EXPR, class_decl, 0);
3151 class_superclass_expr = build_int_cst (NULL_TREE, 0);
3152 flags |= 0x02; /* RO_ROOT: it is also a root meta class. */
3155 if (CLASS_PROTOCOL_LIST (impent->imp_template))
3157 generate_protocol_references (CLASS_PROTOCOL_LIST (impent->imp_template));
3158 protocol_decl = generate_v2_protocol_list (impent->imp_template,
3159 impent->imp_context);
3164 name_expr = add_objc_string (CLASS_NAME (impent->imp_template),
3167 if (CLASS_CLS_METHODS (impent->imp_context))
3169 snprintf (buf, BUFSIZE, "_OBJC_ClassMethods_%s",
3170 IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
3172 generate_v2_dispatch_table (CLASS_CLS_METHODS (impent->imp_context),
3173 buf, meta_clac_meth);
3176 instanceStart = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_class_template));
3178 /* Currently there are no class ivars and generation of class
3179 variables for the root of the inheritance has been removed. It
3180 causes multiple defines if there are two root classes in the
3181 link, because each will define its own identically-named offset
3184 class_ivars = NULL_TREE;
3185 /* TODO: Add total size of class variables when implemented. */
3186 instanceSize = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_class_template));
3188 /* So now build the META CLASS structs. */
3189 /* static struct class_ro_t _OBJC_METACLASS_Foo = { ... }; */
3191 decl = start_var_decl (objc_v2_class_ro_template,
3192 newabi_append_ro (IDENTIFIER_POINTER
3193 (DECL_NAME (metaclass_decl))));
3195 /* TODO: ivarLayout needs t be built. */
3197 build_v2_class_ro_t_initializer (TREE_TYPE (decl), name_expr,
3198 (flags | cls_flags), instanceStart,
3199 instanceSize, ivarLayout,
3200 class_methods, protocol_decl,
3201 class_ivars, NULL_TREE);
3202 /* The ROs sit in the default const section. */
3203 OBJCMETA (decl, objc_meta, meta_base);
3204 finish_var_decl (decl, initlist);
3206 /* static struct class_t _OBJC_METACLASS_Foo = { ... }; */
3208 build_v2_class_t_initializer (TREE_TYPE (metaclass_decl),
3210 metaclass_superclass_expr,
3211 build_fold_addr_expr (decl),
3212 build_fold_addr_expr (UOBJC_V2_CACHE_decl),
3213 build_fold_addr_expr (UOBJC_V2_VTABLE_decl));
3214 /* The class section attributes are set when they are created. */
3215 finish_var_decl (metaclass_decl, initlist);
3216 impent->meta_decl = metaclass_decl;
3218 /* So now build the CLASS structs. */
3220 flags = 0x0; /* ... */
3222 flags |= 0x02; /* RO_ROOT: this is a root class */
3224 if (DECL_VISIBILITY (class_decl) == VISIBILITY_HIDDEN)
3225 flags |= 0x10; /* RO_HIDDEN, OBJC2_CLS_HIDDEN; */
3227 if (objc2_objc_exception_attr (impent->imp_template))
3228 flags |= 0x20; /* RO_EXCEPTION */
3230 if (CLASS_NST_METHODS (impent->imp_context))
3232 snprintf (buf, BUFSIZE, "_OBJC_InstanceMethods_%s",
3233 IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
3235 generate_v2_dispatch_table (CLASS_NST_METHODS (impent->imp_context),
3236 buf, meta_clai_meth);
3239 /* Sort out the ivars before we try to compute the class sizes. */
3240 if ((chain = CLASS_IVARS (impent->imp_template)))
3242 snprintf (buf, BUFSIZE, "_OBJC_InstanceIvars_%s",
3243 IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
3244 inst_ivars = generate_v2_ivars_list (chain, buf, meta_clai_vars,
3245 impent->imp_template);
3248 /* Compute instanceStart. */
3249 gcc_assert (CLASS_STATIC_TEMPLATE (impent->imp_template));
3250 field = TYPE_FIELDS (CLASS_STATIC_TEMPLATE (impent->imp_template));
3251 if (my_super_id && field && TREE_CHAIN (field))
3252 field = TREE_CHAIN (field);
3256 while (firstIvar && TREE_CODE (firstIvar) != FIELD_DECL)
3257 firstIvar = TREE_CHAIN (firstIvar);
3259 gcc_assert (inst_ivars? (firstIvar != NULL_TREE): true);
3261 /* Compute instanceSize. */
3262 while (field && TREE_CHAIN (field)
3263 && TREE_CODE (TREE_CHAIN (field)) == FIELD_DECL)
3264 field = TREE_CHAIN (field);
3266 if (field && TREE_CODE (field) == FIELD_DECL)
3267 instanceSize = int_byte_position (field) * BITS_PER_UNIT
3268 + tree_low_cst (DECL_SIZE (field), 0);
3271 instanceSize /= BITS_PER_UNIT;
3273 props = generate_v2_property_table (NULL_TREE, impent->imp_context);
3275 /* If the class has no ivars, instanceStart should be set to the
3276 superclass's instanceSize. */
3278 (inst_ivars != NULL_TREE) ? (unsigned) int_byte_position (firstIvar)
3281 /* static struct class_ro_t _OBJC_CLASS_Foo = { ... }; */
3282 decl = start_var_decl (objc_v2_class_ro_template,
3283 newabi_append_ro (IDENTIFIER_POINTER
3284 (DECL_NAME (class_decl))));
3287 build_v2_class_ro_t_initializer (TREE_TYPE (decl), name_expr,
3288 (flags | cls_flags), instanceStart,
3289 instanceSize, ivarLayout,
3290 inst_methods, protocol_decl,
3292 /* The ROs sit in the default const section. */
3293 OBJCMETA (decl, objc_meta, meta_base);
3294 finish_var_decl (decl, initlist);
3296 /* static struct class_t _OBJC_CLASS_Foo = { ... }; */
3297 initlist = build_v2_class_t_initializer (TREE_TYPE (class_decl),
3298 build_fold_addr_expr (metaclass_decl),
3299 class_superclass_expr,
3300 build_fold_addr_expr (decl),
3301 build_fold_addr_expr (UOBJC_V2_CACHE_decl),
3302 build_fold_addr_expr (UOBJC_V2_VTABLE_decl));
3304 /* The class section attributes are set when they are created. */
3305 finish_var_decl (class_decl, initlist);
3306 impent->class_decl = class_decl;
3308 objc_v2_add_to_class_list (class_decl);
3309 if (has_load_impl (CLASS_CLS_METHODS (impent->imp_context)))
3310 objc_v2_add_to_nonlazy_class_list (class_decl);
3312 if (flags & 0x20) /* RO_EXCEPTION */
3313 objc_v2_add_to_ehtype_list (CLASS_NAME (impent->imp_template));
3316 /* This routine outputs the (ivar_reference_offset, offset)
3320 build_v2_ivar_offset_ref_table (void)
3325 if (!vec_safe_length (ivar_offset_refs))
3328 FOR_EACH_VEC_ELT (*ivar_offset_refs, count, ref)
3329 finish_var_decl (ref->decl, ref->offset);
3332 /* static int _OBJC_IMAGE_INFO[2] = { 0, 16 | flags }; */
3335 generate_v2_objc_image_info (void)
3337 tree decl, array_type;
3338 vec<constructor_elt, va_gc> *v = NULL;
3340 ((flag_replace_objc_classes && imp_count ? 1 : 0)
3341 | (flag_objc_gc ? 2 : 0));
3345 array_type = build_sized_array_type (integer_type_node, 2);
3347 decl = start_var_decl (array_type, "_OBJC_ImageInfo");
3349 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, integer_zero_node);
3350 CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (integer_type_node, flags));
3351 /* The Runtime wants this. */
3352 DECL_PRESERVE_P (decl) = 1;
3353 OBJCMETA (decl, objc_meta, meta_info);
3354 finish_var_decl (decl, objc_build_constructor (TREE_TYPE (decl), v));
3358 objc_generate_v2_next_metadata (void)
3360 struct imp_entry *impent;
3362 /* FIXME: Make sure that we generate no metadata if there is nothing
3365 gcc_assert (!objc_static_instances); /* Not for NeXT */
3367 build_metadata_templates ();
3369 for (impent = imp_list; impent; impent = impent->next)
3371 /* If -gen-decls is present, Dump the @interface of each class.
3372 TODO: Dump the classes in the order they were found, rather
3373 than in reverse order as we are doing now. */
3374 if (flag_gen_declaration)
3375 dump_interface (gen_declaration_file, impent->imp_context);
3377 /* all of the following reference the string pool... */
3378 if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION_TYPE)
3379 generate_v2_class_structs (impent);
3381 generate_v2_category (impent);
3384 build_next_selector_translation_table ();
3385 build_v2_message_ref_translation_table ();
3387 /* This will add "Protocol" to the class refs. */
3388 generate_v2_protocols ();
3390 build_v2_classrefs_table ();
3391 build_v2_super_classrefs_table (/*metaclass= */false);
3392 build_v2_super_classrefs_table (/*metaclass= */true);
3394 build_v2_ivar_offset_ref_table ();
3396 build_v2_protocol_list_translation_table ();
3397 build_v2_protocol_list_address_table ();
3399 build_v2_address_table (class_list, "_OBJC_ClassList$",
3400 meta_label_classlist);
3401 build_v2_address_table (category_list, "_OBJC_CategoryList$",
3402 meta_label_categorylist);
3403 build_v2_address_table (nonlazy_class_list, "_OBJC_NonLazyClassList$",
3404 meta_label_nonlazy_classlist);
3405 build_v2_address_table (nonlazy_category_list, "_OBJC_NonLazyCategoryList$",
3406 meta_label_nonlazy_categorylist);
3408 /* This conveys information on GC usage and zero-link. */
3409 generate_v2_objc_image_info ();
3411 /* Generate catch objects for eh, if any are needed. */
3412 build_v2_eh_catch_objects ();
3414 /* Emit the string table last. */
3415 generate_strings ();
3418 /* NOTE --- Output NeXT V2 Exceptions --- */
3420 static GTY(()) tree objc_v2_ehtype_template;
3421 static GTY(()) tree next_v2_ehvtable_decl;
3422 static GTY(()) tree next_v2_EHTYPE_id_decl;
3425 build_v2_ehtype_template (void)
3427 tree decls, *chain = NULL;
3428 objc_v2_ehtype_template = objc_start_struct (get_identifier (UTAG_V2_EH_TYPE));
3430 /* void *_objc_ehtype_vtable; */
3431 decls = add_field_decl (ptr_type_node, "_objc_ehtype_vtable_ptr", &chain);
3433 /* const char *className; */
3434 add_field_decl (string_type_node, "className", &chain);
3436 /* struct class_t *const cls; */
3437 add_field_decl (build_pointer_type (objc_v2_class_template), "cls", &chain);
3439 objc_finish_struct (objc_v2_ehtype_template, decls);
3442 /* Template for the Objective-C family typeinfo type for ABI=2. This
3443 starts off the same as the gxx/cxx eh typeinfo.
3445 struct _objc_ehtype_t
3447 void *_objc_ehtype_vtable_ptr; - as per c++
3448 const char *className; - as per c++
3449 struct class_t *const cls;
3453 /* This routine builds initializer list for object of type struct _objc_ehtype_t.
3457 objc2_build_ehtype_initializer (tree name, tree cls)
3459 vec<constructor_elt, va_gc> *initlist = NULL;
3462 /* This is done the same way as c++, missing the two first entries
3463 in the parent vtable. NOTE: there is a fix-me in the Apple/NeXT
3464 runtime source about this so, perhaps, this will change at some
3466 /* _objc_ehtype_vtable + 2*sizeof(void*) */
3467 if (!next_v2_ehvtable_decl)
3469 next_v2_ehvtable_decl =
3470 start_var_decl (ptr_type_node, TAG_NEXT_EHVTABLE_NAME);
3471 TREE_STATIC (next_v2_ehvtable_decl) = 0;
3472 DECL_EXTERNAL (next_v2_ehvtable_decl) = 1;
3473 TREE_PUBLIC (next_v2_ehvtable_decl) = 1;
3475 addr = build_fold_addr_expr_with_type (next_v2_ehvtable_decl, ptr_type_node);
3476 offs = size_int (2 * int_cst_value (TYPE_SIZE_UNIT (ptr_type_node)));
3477 addr = fold_build_pointer_plus (addr, offs);
3479 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, addr);
3482 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, name);
3485 CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, cls);
3487 return objc_build_constructor (objc_v2_ehtype_template, initlist);
3491 build_ehtype (tree name, const char *eh_name, bool weak)
3493 tree name_expr, class_name_expr, ehtype_decl, inits;
3495 name_expr = add_objc_string (name, class_names);
3496 /* Extern ref. for the class. ??? Maybe we can look this up
3499 create_extern_decl (objc_v2_class_template,
3500 objc_build_internal_classname (name, false));
3501 class_name_expr = build_fold_addr_expr (class_name_expr);
3502 ehtype_decl = create_global_decl (objc_v2_ehtype_template, eh_name);
3504 DECL_WEAK (ehtype_decl) = 1;
3505 inits = objc2_build_ehtype_initializer (name_expr, class_name_expr);
3506 OBJCMETA (ehtype_decl, objc_meta, meta_ehtype);
3507 finish_var_decl (ehtype_decl, inits);
3511 /* This routine returns TRUE if CLS or any of its super classes has
3512 __attribute__ ((objc_exception)). */
3515 objc2_objc_exception_attr (tree cls)
3519 if (CLASS_HAS_EXCEPTION_ATTR (cls))
3521 cls = lookup_interface (CLASS_SUPER_NAME (cls));
3528 is_implemented (tree name)
3530 struct imp_entry *t;
3531 for (t = imp_list; t; t = t->next)
3532 if (TREE_CODE (t->imp_context) == CLASS_IMPLEMENTATION_TYPE
3533 && CLASS_NAME (t->imp_template) == name)
3539 /* We will build catch objects:
3540 for any type implemented here.
3541 for any type used in a catch that has no exception attribute. */
3542 static void build_v2_eh_catch_objects (void)
3545 ident_data_tuple *ref;
3547 if (!vec_safe_length (ehtype_list))
3550 FOR_EACH_VEC_ELT (*ehtype_list, count, ref)
3553 bool impl = is_implemented (ref->ident);
3554 bool excpt = objc2_objc_exception_attr (lookup_interface (ref->ident));
3555 snprintf (buf, BUFSIZE, "OBJC_EHTYPE_$_%s", IDENTIFIER_POINTER (ref->ident));
3557 /* The User says this class has a catcher already. */
3558 ref->data = create_extern_decl (objc_v2_ehtype_template, buf);
3560 /* Create a catcher, weak if it wasn't marked. */
3561 ref->data = build_ehtype (ref->ident, buf, !excpt);
3566 lookup_ehtype_ref (tree id)
3569 ident_data_tuple *ref;
3571 if (!vec_safe_length (ehtype_list))
3574 FOR_EACH_VEC_ELT (*ehtype_list, count, ref)
3575 if (ref->ident == id)
3580 /* This hook, called via lang_eh_runtime_type, generates a runtime
3581 object which is either the address of the 'OBJC_EHTYPE_$_class'
3582 object or address of external OBJC_EHTYPE_id object. */
3584 next_runtime_02_eh_type (tree type)
3588 if (type == error_mark_node
3589 /*|| errorcount || sorrycount*/)
3592 if (POINTER_TYPE_P (type) && objc_is_object_id (TREE_TYPE (type)))
3594 if (!next_v2_EHTYPE_id_decl)
3596 /* This is provided by the Apple/NeXT libobjc.dylib so we
3597 need only to reference it. */
3598 next_v2_EHTYPE_id_decl =
3599 start_var_decl (objc_v2_ehtype_template, "OBJC_EHTYPE_id");
3600 DECL_EXTERNAL (next_v2_EHTYPE_id_decl) = 1;
3601 TREE_PUBLIC (next_v2_EHTYPE_id_decl) = 1;
3602 TREE_STATIC (next_v2_EHTYPE_id_decl) = 0;
3604 return build_fold_addr_expr (next_v2_EHTYPE_id_decl);
3607 if (!POINTER_TYPE_P (type) || !TYPED_OBJECT (TREE_TYPE (type)))
3610 /* This routine is also called for c++'s catch clause; in which
3611 case, we use c++'s typeinfo decl. */
3612 return build_eh_type_type (type);
3614 error ("non-objective-c type '%T' cannot be caught", type);
3619 t = OBJC_TYPE_NAME (TREE_TYPE (type));
3621 /* We have to build a reference to the OBJC_EHTYPE_<Class>. */
3622 t = lookup_ehtype_ref (t);
3626 return build_fold_addr_expr (t);
3629 return error_mark_node;
3632 static GTY(()) tree objc_eh_personality_decl;
3635 objc_eh_personality (void)
3637 if (!objc_eh_personality_decl)
3638 objc_eh_personality_decl = build_personality_function ("objc");
3639 return objc_eh_personality_decl;
3642 /* NOTE --- interfaces --- */
3645 build_throw_stmt (location_t loc, tree throw_expr, bool rethrown)
3649 /* We have a separate re-throw entry. */
3650 t = build_function_call_vec (loc, objc_rethrow_exception_decl, NULL, NULL);
3653 /* Throw like the others... */
3654 vec<tree, va_gc> *parms;
3655 vec_alloc (parms, 1);
3656 parms->quick_push (throw_expr);
3657 t = build_function_call_vec (loc, objc_exception_throw_decl, parms, 0);
3660 return add_stmt (t);
3663 /* Build __builtin_eh_pointer. */
3666 objc_build_exc_ptr (struct objc_try_context **x ATTRIBUTE_UNUSED)
3669 t = builtin_decl_explicit (BUILT_IN_EH_POINTER);
3670 t = build_call_expr (t, 1, integer_zero_node);
3671 return fold_convert (objc_object_type, t);
3674 static tree begin_catch (struct objc_try_context **cur_try_context, tree type,
3675 tree decl, tree compound, bool ellipsis ATTRIBUTE_UNUSED)
3679 /* Record the data for the catch in the try context so that we can
3680 finalize it later. Ellipsis is signalled by a NULL entry. */
3682 t = build_stmt (input_location, CATCH_EXPR, NULL_TREE, compound);
3684 t = build_stmt (input_location, CATCH_EXPR, type, compound);
3685 (*cur_try_context)->current_catch = t;
3687 /* Initialize the decl from the EXC_PTR_EXPR we get from the runtime. */
3688 t = objc_build_exc_ptr (cur_try_context);
3689 t = convert (TREE_TYPE (decl), t);
3690 /* FIXME: location. */
3691 if (type && type != error_mark_node)
3693 t = build1(NOP_EXPR, ptr_type_node, t);
3694 t = build_function_call (input_location, objc2_begin_catch_decl,
3695 tree_cons (NULL_TREE, t, NULL_TREE));
3697 /* We might want to build a catch object for this (if it's not
3699 if (POINTER_TYPE_P (type)
3700 && !objc_is_object_id (TREE_TYPE (type))
3701 && TYPED_OBJECT (TREE_TYPE (type)))
3702 objc_v2_add_to_ehtype_list (OBJC_TYPE_NAME (TREE_TYPE (type)));
3704 return build2 (MODIFY_EXPR, void_type_node, decl, t);
3707 /* try { catch-body } finally { objc_end_catch (); } */
3709 finish_catch (struct objc_try_context **cur_try_context, tree curr_catch)
3711 struct objc_try_context *ct;
3712 tree try_exp, func, *l, t ;
3713 location_t loc = (*cur_try_context)->try_locus;
3715 if (!curr_catch || curr_catch == error_mark_node)
3718 t = CATCH_BODY (curr_catch);
3719 if (TREE_CODE (t) == BIND_EXPR)
3721 /* Usual case of @catch (objc-expr). */
3722 objc_begin_try_stmt (loc, BIND_EXPR_BODY (t));
3723 BIND_EXPR_BODY (t) = NULL_TREE;
3724 l = &BIND_EXPR_BODY (t);
3728 /* NULL entry, meaning @catch (...). */
3729 objc_begin_try_stmt (loc, t);
3730 CATCH_BODY (curr_catch) = NULL_TREE;
3731 l = &CATCH_BODY (curr_catch);
3734 /* Pick up the new context we made in begin_try above... */
3735 ct = *cur_try_context;
3736 func = build_function_call_vec (loc, objc2_end_catch_decl, NULL, NULL);
3737 append_to_statement_list (func, &ct->finally_body);
3738 try_exp = build_stmt (loc, TRY_FINALLY_EXPR, ct->try_body, ct->finally_body);
3739 *cur_try_context = ct->outer;
3741 append_to_statement_list (try_exp, l);
3742 append_to_statement_list (curr_catch, &((*cur_try_context)->catch_list));
3746 finish_try_stmt (struct objc_try_context **cur_try_context)
3748 struct objc_try_context *c = *cur_try_context;
3749 tree stmt = c->try_body;
3751 stmt = build_stmt (c->try_locus, TRY_CATCH_EXPR, stmt, c->catch_list);
3752 if (c->finally_body)
3753 stmt = build_stmt (c->try_locus, TRY_FINALLY_EXPR, stmt, c->finally_body);
3757 #include "gt-objc-objc-next-runtime-abi-02.h"