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d764a8e6 | 1 | /* Next Runtime (ABI-2) private. |
d1e082c2 | 2 | Copyright (C) 2011-2013 Free Software Foundation, Inc. |
d764a8e6 IS |
3 | |
4 | Contributed by Iain Sandoe and based, in part, on an implementation in | |
5 | 'branches/apple/trunk' contributed by Apple Computer Inc. | |
6 | ||
7 | This file is part of GCC. | |
8 | ||
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) | |
12 | any later version. | |
13 | ||
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. | |
18 | ||
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/>. */ | |
22 | ||
23 | /* The NeXT ABI2 is used for m64 implementations on Darwin/OSX machines. | |
944fb799 | 24 | |
d4c433f9 NP |
25 | This version is intended to match (logically) the output of Apple's |
26 | 4.2.1 compiler. */ | |
d764a8e6 IS |
27 | |
28 | #include "config.h" | |
29 | #include "system.h" | |
30 | #include "coretypes.h" | |
31 | #include "tm.h" | |
32 | #include "tree.h" | |
d8a2d370 | 33 | #include "stringpool.h" |
d764a8e6 IS |
34 | |
35 | #ifdef OBJCPLUS | |
d4a10d0a | 36 | #include "cp/cp-tree.h" |
d764a8e6 | 37 | #else |
d4a10d0a SB |
38 | #include "c/c-tree.h" |
39 | #include "c/c-lang.h" | |
d764a8e6 IS |
40 | #endif |
41 | #include "langhooks.h" | |
42 | #include "c-family/c-objc.h" | |
43 | #include "objc-act.h" | |
44 | ||
45 | /* When building Objective-C++, we are not linking against the C front-end | |
46 | and so need to replicate the C tree-construction functions in some way. */ | |
47 | #ifdef OBJCPLUS | |
48 | #define OBJCP_REMAP_FUNCTIONS | |
49 | #include "objcp-decl.h" | |
50 | #endif /* OBJCPLUS */ | |
51 | ||
52 | #include "ggc.h" | |
53 | #include "target.h" | |
d764a8e6 IS |
54 | #include "tree-iterator.h" |
55 | ||
d764a8e6 | 56 | #include "objc-runtime-hooks.h" |
d764a8e6 | 57 | #include "objc-runtime-shared-support.h" |
f027ee7c | 58 | #include "objc-encoding.h" |
d764a8e6 IS |
59 | |
60 | /* ABI 2 Private definitions. */ | |
61 | #define DEF_CONSTANT_STRING_CLASS_NAME "NSConstantString" | |
62 | ||
63 | #define TAG_GETCLASS "objc_getClass" | |
64 | #define TAG_GETMETACLASS "objc_getMetaClass" | |
65 | ||
66 | #define TAG_MSGSEND "objc_msgSend" | |
67 | #define TAG_MSGSENDSUPER "objc_msgSendSuper" | |
68 | #define TAG_MSGSEND_STRET "objc_msgSend_stret" | |
69 | #define TAG_MSGSENDSUPER_STRET "objc_msgSendSuper_stret" | |
70 | ||
71 | #define TAG_NEXT_EHVTABLE_NAME "objc_ehtype_vtable" | |
72 | #define TAG_V2_EH_TYPE "objc_ehtype_t" | |
73 | ||
74 | #define UTAG_V2_CLASS "_class_t" | |
75 | #define UTAG_V2_CLASS_RO "_class_ro_t" | |
76 | #define UTAG_V2_PROTOCOL "_protocol_t" | |
77 | #define UTAG_V2_PROTOCOL_LIST "_protocol_list_t" | |
78 | ||
79 | #define UTAG_V2_EH_TYPE "_objc_ehtype_t" | |
80 | ||
81 | #define OBJC2_CLS_HAS_CXX_STRUCTORS 0x0004L | |
82 | ||
83 | enum objc_v2_tree_index | |
944fb799 | 84 | { |
d764a8e6 IS |
85 | /* Templates. */ |
86 | OCTI_V2_CLS_TEMPL, | |
87 | OCTI_V2_CAT_TEMPL, | |
88 | OCTI_V2_CLS_RO_TEMPL, | |
89 | OCTI_V2_PROTO_TEMPL, | |
90 | OCTI_V2_IVAR_TEMPL, | |
91 | OCTI_V2_IVAR_LIST_TEMPL, | |
92 | OCTI_V2_MESSAGE_REF_TEMPL, | |
93 | OCTI_V2_SUPER_MESSAGE_REF_TEMPL, | |
944fb799 | 94 | |
d764a8e6 IS |
95 | OCTI_V2_MESSAGE_SELECTOR_TYPE, |
96 | OCTI_V2_SUPER_MESSAGE_SELECTOR_TYPE, | |
97 | OCTI_V2_IMP_TYPE, | |
98 | OCTI_V2_SUPER_IMP_TYPE, | |
99 | ||
100 | OCTI_V2_CACHE_DECL, | |
101 | OCTI_V2_VTABLE_DECL, | |
102 | ||
103 | OCTI_V2_PROPERTY_TEMPL, | |
944fb799 | 104 | |
d764a8e6 IS |
105 | /* V2 messaging. */ |
106 | OCTI_V2_UMSG_FIXUP_DECL, | |
107 | OCTI_V2_UMSG_STRET_FIXUP_DECL, | |
108 | OCTI_V2_UMSG_ID_FIXUP_DECL, | |
109 | OCTI_V2_UMSG_ID_STRET_FIXUP_DECL, | |
110 | OCTI_V2_UMSG_SUPER2_FIXUP_DECL, | |
111 | OCTI_V2_UMSG_SUPER2_STRET_FIXUP_DECL, | |
944fb799 | 112 | |
d764a8e6 IS |
113 | /* Exceptions - related. */ |
114 | OCTI_V2_BEGIN_CATCH_DECL, | |
115 | OCTI_V2_END_CATCH_DECL, | |
116 | OCTI_V2_RETHROW_DECL, | |
944fb799 | 117 | |
d764a8e6 IS |
118 | OCTI_V2_MAX |
119 | }; | |
120 | ||
121 | #define objc_v2_class_template objc_v2_global_trees[OCTI_V2_CLS_TEMPL] | |
122 | #define objc_v2_class_ro_template \ | |
123 | objc_v2_global_trees[OCTI_V2_CLS_RO_TEMPL] | |
124 | #define objc_v2_category_template \ | |
125 | objc_v2_global_trees[OCTI_V2_CAT_TEMPL] | |
126 | #define objc_v2_protocol_template \ | |
127 | objc_v2_global_trees[OCTI_V2_PROTO_TEMPL] | |
128 | ||
129 | /* struct message_ref_t */ | |
130 | #define objc_v2_message_ref_template \ | |
944fb799 | 131 | objc_v2_global_trees[OCTI_V2_MESSAGE_REF_TEMPL] |
d764a8e6 IS |
132 | |
133 | #define objc_v2_ivar_list_ptr objc_v2_global_trees[OCTI_V2_IVAR_LIST_TEMPL] | |
134 | ||
135 | /* struct super_message_ref_t */ | |
136 | #define objc_v2_super_message_ref_template \ | |
944fb799 | 137 | objc_v2_global_trees[OCTI_V2_SUPER_MESSAGE_REF_TEMPL] |
d764a8e6 IS |
138 | |
139 | /* struct message_ref_t* */ | |
944fb799 | 140 | #define objc_v2_selector_type objc_v2_global_trees[OCTI_V2_MESSAGE_SELECTOR_TYPE] |
d764a8e6 IS |
141 | /* struct super_super_message_ref_t */ |
142 | #define objc_v2_super_selector_type \ | |
944fb799 | 143 | objc_v2_global_trees[OCTI_V2_SUPER_MESSAGE_SELECTOR_TYPE] |
d764a8e6 | 144 | #define objc_v2_imp_type objc_v2_global_trees[OCTI_V2_IMP_TYPE] |
944fb799 | 145 | #define objc_v2_super_imp_type objc_v2_global_trees[OCTI_V2_SUPER_IMP_TYPE] |
d764a8e6 IS |
146 | |
147 | #define UOBJC_V2_CACHE_decl objc_v2_global_trees[OCTI_V2_CACHE_DECL] | |
148 | #define UOBJC_V2_VTABLE_decl objc_v2_global_trees[OCTI_V2_VTABLE_DECL] | |
149 | ||
150 | #define objc_v2_ivar_template objc_v2_global_trees[OCTI_V2_IVAR_TEMPL] | |
151 | #define objc_v2_property_template \ | |
152 | objc_v2_global_trees[OCTI_V2_PROPERTY_TEMPL] | |
153 | ||
154 | /* V2 Messaging */ | |
155 | ||
156 | /* objc_msgSend_fixup_rtp */ | |
944fb799 | 157 | #define umsg_fixup_decl objc_v2_global_trees[OCTI_V2_UMSG_FIXUP_DECL] |
d764a8e6 | 158 | /* objc_msgSend_stret_fixup_rtp */ |
944fb799 | 159 | #define umsg_stret_fixup_decl objc_v2_global_trees[OCTI_V2_UMSG_STRET_FIXUP_DECL] |
d764a8e6 | 160 | /* objc_msgSendId_fixup_rtp */ |
944fb799 | 161 | #define umsg_id_fixup_decl objc_v2_global_trees[OCTI_V2_UMSG_ID_FIXUP_DECL] |
d764a8e6 IS |
162 | /* objc_msgSendId_stret_fixup_rtp */ |
163 | #define umsg_id_stret_fixup_decl \ | |
944fb799 | 164 | objc_v2_global_trees[OCTI_V2_UMSG_ID_STRET_FIXUP_DECL] |
d764a8e6 IS |
165 | /* objc_msgSendSuper2_fixup_rtp */ |
166 | #define umsg_id_super2_fixup_decl \ | |
167 | objc_v2_global_trees[OCTI_V2_UMSG_SUPER2_FIXUP_DECL] | |
168 | /* objc_msgSendSuper2_stret_fixup_rtp */ | |
169 | #define umsg_id_super2_stret_fixup_decl \ | |
170 | objc_v2_global_trees[OCTI_V2_UMSG_SUPER2_STRET_FIXUP_DECL] | |
171 | ||
172 | #define objc2_begin_catch_decl objc_v2_global_trees[OCTI_V2_BEGIN_CATCH_DECL] | |
173 | #define objc2_end_catch_decl objc_v2_global_trees[OCTI_V2_END_CATCH_DECL] | |
174 | #define objc_rethrow_exception_decl \ | |
175 | objc_v2_global_trees[OCTI_V2_RETHROW_DECL] | |
176 | ||
177 | /* rt_trees identifiers - shared between NeXT implementations. These allow | |
178 | the FE to tag meta-data in a manner that survives LTO and can be used when | |
179 | the runtime requires that certain meta-data items appear in particular | |
180 | named sections. */ | |
181 | ||
182 | #include "objc-next-metadata-tags.h" | |
183 | extern GTY(()) tree objc_rt_trees[OCTI_RT_META_MAX]; | |
184 | ||
185 | /* The OCTI_V2_... enumeration itself is in above. */ | |
186 | static GTY(()) tree objc_v2_global_trees[OCTI_V2_MAX]; | |
187 | ||
188 | static void next_runtime_02_initialize (void); | |
189 | ||
190 | static void build_v2_message_ref_templates (void); | |
191 | static void build_v2_class_templates (void); | |
192 | static void build_v2_super_template (void); | |
193 | static void build_v2_category_template (void); | |
194 | static void build_v2_protocol_template (void); | |
195 | ||
196 | static tree next_runtime_abi_02_super_superclassfield_id (void); | |
197 | ||
198 | static tree next_runtime_abi_02_class_decl (tree); | |
199 | static tree next_runtime_abi_02_metaclass_decl (tree); | |
200 | static tree next_runtime_abi_02_category_decl (tree); | |
201 | static tree next_runtime_abi_02_protocol_decl (tree); | |
202 | static tree next_runtime_abi_02_string_decl (tree, const char *, string_section); | |
203 | ||
204 | static tree next_runtime_abi_02_get_class_reference (tree); | |
205 | static tree next_runtime_abi_02_build_selector_reference (location_t, tree, tree); | |
206 | static tree next_runtime_abi_02_get_protocol_reference (location_t, tree); | |
207 | static tree next_runtime_abi_02_build_ivar_ref (location_t, tree, tree); | |
208 | static tree next_runtime_abi_02_get_class_super_ref (location_t, struct imp_entry *, bool); | |
209 | static tree next_runtime_abi_02_get_category_super_ref (location_t, struct imp_entry *, bool); | |
210 | ||
211 | static tree next_runtime_abi_02_receiver_is_class_object (tree); | |
9771b263 DN |
212 | static void next_runtime_abi_02_get_arg_type_list_base (vec<tree, va_gc> **, |
213 | tree, int, int); | |
d764a8e6 IS |
214 | static tree next_runtime_abi_02_build_objc_method_call (location_t, tree, tree, |
215 | tree, tree, tree, int); | |
216 | static bool next_runtime_abi_02_setup_const_string_class_decl (void); | |
217 | static tree next_runtime_abi_02_build_const_string_constructor (location_t, tree, int); | |
218 | ||
219 | static tree create_extern_decl (tree, const char *); | |
220 | ||
221 | static void objc_generate_v2_next_metadata (void); | |
222 | static bool objc2_objc_exception_attr (tree); | |
223 | ||
224 | /* void build_v2_protocol_reference (tree);*/ | |
225 | static void build_v2_ehtype_template (void); | |
226 | static void build_v2_eh_catch_objects (void); | |
227 | static tree next_runtime_02_eh_type (tree); | |
228 | static tree objc_eh_personality (void); | |
229 | static tree build_throw_stmt (location_t, tree, bool); | |
230 | static tree objc_build_exc_ptr (struct objc_try_context **); | |
231 | static tree begin_catch (struct objc_try_context **, tree, tree, tree, bool); | |
232 | static void finish_catch (struct objc_try_context **, tree); | |
233 | static tree finish_try_stmt (struct objc_try_context **); | |
234 | ||
3cc2dd4b | 235 | /* TODO: Use an objc-map. */ |
d764a8e6 IS |
236 | static GTY ((length ("SIZEHASHTABLE"))) hash *extern_names; |
237 | ||
944fb799 | 238 | bool |
d764a8e6 IS |
239 | objc_next_runtime_abi_02_init (objc_runtime_hooks *rthooks) |
240 | { | |
241 | extern_names = ggc_alloc_cleared_vec_hash (SIZEHASHTABLE); | |
242 | ||
243 | if (flag_objc_exceptions && flag_objc_sjlj_exceptions) | |
244 | { | |
245 | inform (UNKNOWN_LOCATION, "%<-fobjc-sjlj-exceptions%> is ignored for " | |
944fb799 | 246 | "%<-fnext-runtime%> when %<-fobjc-abi-version%> >= 2"); |
d764a8e6 IS |
247 | flag_objc_sjlj_exceptions = 0; |
248 | } | |
249 | ||
250 | rthooks->initialize = next_runtime_02_initialize; | |
251 | rthooks->default_constant_string_class_name = DEF_CONSTANT_STRING_CLASS_NAME; | |
252 | rthooks->tag_getclass = TAG_GETCLASS; | |
253 | rthooks->super_superclassfield_ident = next_runtime_abi_02_super_superclassfield_id; | |
254 | ||
255 | rthooks->class_decl = next_runtime_abi_02_class_decl; | |
256 | rthooks->metaclass_decl = next_runtime_abi_02_metaclass_decl; | |
257 | rthooks->category_decl = next_runtime_abi_02_category_decl; | |
258 | rthooks->protocol_decl = next_runtime_abi_02_protocol_decl; | |
259 | rthooks->string_decl = next_runtime_abi_02_string_decl; | |
260 | ||
261 | rthooks->get_class_reference = next_runtime_abi_02_get_class_reference; | |
262 | rthooks->build_selector_reference = next_runtime_abi_02_build_selector_reference; | |
263 | rthooks->get_protocol_reference = next_runtime_abi_02_get_protocol_reference; | |
264 | rthooks->build_ivar_reference = next_runtime_abi_02_build_ivar_ref; | |
265 | rthooks->get_class_super_ref = next_runtime_abi_02_get_class_super_ref; | |
266 | rthooks->get_category_super_ref = next_runtime_abi_02_get_category_super_ref; | |
267 | ||
268 | rthooks->receiver_is_class_object = next_runtime_abi_02_receiver_is_class_object; | |
269 | rthooks->get_arg_type_list_base = next_runtime_abi_02_get_arg_type_list_base; | |
270 | rthooks->build_objc_method_call = next_runtime_abi_02_build_objc_method_call; | |
271 | ||
272 | rthooks->setup_const_string_class_decl = | |
273 | next_runtime_abi_02_setup_const_string_class_decl; | |
274 | rthooks->build_const_string_constructor = | |
275 | next_runtime_abi_02_build_const_string_constructor; | |
276 | ||
277 | rthooks->build_throw_stmt = build_throw_stmt; | |
278 | rthooks->build_exc_ptr = objc_build_exc_ptr; | |
279 | rthooks->begin_catch = begin_catch; | |
280 | rthooks->finish_catch = finish_catch; | |
281 | rthooks->finish_try_stmt = finish_try_stmt; | |
282 | ||
283 | rthooks->generate_metadata = objc_generate_v2_next_metadata; | |
284 | return true; | |
285 | } | |
286 | ||
287 | /* We need a way to convey what kind of meta-data are represented by a given | |
288 | variable, since each type is expected (by the runtime) to be found in a | |
289 | specific named section. The solution must be usable with LTO. | |
944fb799 | 290 | |
d764a8e6 IS |
291 | The scheme used for NeXT ABI 0/1 (partial matching of variable names) is not |
292 | satisfactory when LTO is used with ABI-2. We now tag ObjC meta-data with | |
293 | identification attributes in the front end. The back-end may choose to act | |
294 | on these as it requires. */ | |
295 | ||
296 | static void | |
297 | next_runtime_abi_02_init_metadata_attributes (void) | |
298 | { | |
299 | if (!objc_meta) | |
300 | objc_meta = get_identifier ("OBJC2META"); | |
301 | ||
302 | if (!meta_base) | |
303 | meta_base = get_identifier ("V2_BASE"); | |
304 | ||
305 | meta_class = get_identifier ("G2_CLAS"); | |
306 | meta_metaclass = get_identifier ("G2_META"); | |
307 | meta_category = | |
308 | meta_protocol = meta_base; | |
309 | ||
310 | meta_clac_vars = | |
311 | meta_clai_vars = meta_base; | |
312 | ||
313 | meta_clac_meth = | |
314 | meta_clai_meth = | |
315 | meta_catc_meth = | |
944fb799 | 316 | meta_cati_meth = |
d764a8e6 IS |
317 | meta_proto_cls_meth = |
318 | meta_proto_nst_meth = meta_base; | |
319 | ||
320 | meta_clas_prot = | |
321 | meta_catg_prot = meta_base; | |
322 | ||
323 | meta_sel_refs = get_identifier ("V2_SRFS"); | |
324 | ||
325 | meta_class_name = | |
326 | meta_meth_name = | |
327 | meta_meth_type = | |
328 | meta_prop_name_attr = get_identifier ("V2_STRG"); | |
329 | ||
330 | meta_mref = get_identifier ("V2_MREF"); | |
331 | meta_class_ref = get_identifier ("V2_CLRF"); | |
332 | meta_superclass_ref = get_identifier ("V2_SURF"); | |
333 | ||
334 | meta_label_classlist = get_identifier ("V2_CLAB"); | |
335 | meta_label_nonlazy_classlist = get_identifier ("V2_NLCL"); | |
336 | meta_label_categorylist = get_identifier ("V2_CALA"); | |
337 | meta_label_nonlazy_categorylist = get_identifier ("V2_NLCA"); | |
338 | ||
339 | meta_label_protocollist = get_identifier ("V2_PLST"); | |
340 | meta_proto_ref = get_identifier ("V2_PRFS"); | |
341 | ||
342 | meta_info = get_identifier ("V2_INFO"); | |
343 | ||
344 | meta_ehtype = get_identifier ("V2_EHTY"); | |
345 | ||
346 | meta_const_str = get_identifier ("V2_CSTR"); | |
347 | } | |
348 | ||
349 | static void next_runtime_02_initialize (void) | |
350 | { | |
351 | tree type; | |
352 | #ifdef OBJCPLUS | |
c2beaa02 NP |
353 | /* For all NeXT objc ABIs -fobjc-call-cxx-cdtors is on by |
354 | default. */ | |
d764a8e6 IS |
355 | if (!global_options_set.x_flag_objc_call_cxx_cdtors) |
356 | global_options.x_flag_objc_call_cxx_cdtors = 1; | |
357 | #endif | |
358 | ||
359 | /* Set up attributes to be attached to the meta-data so that they | |
360 | will be placed in the correct sections. */ | |
361 | next_runtime_abi_02_init_metadata_attributes (); | |
362 | ||
363 | /* `struct objc_selector *' */ | |
364 | objc_selector_type = build_pointer_type (xref_tag (RECORD_TYPE, | |
365 | get_identifier (TAG_SELECTOR))); | |
366 | ||
367 | /* IMP : id (*) (id, _message_ref_t*, ...) | |
368 | SUPER_IMP : id (*) ( super_t*, _super_message_ref_t*, ...) | |
369 | objc_v2_selector_type. */ | |
370 | build_v2_message_ref_templates (); | |
371 | ||
944fb799 MS |
372 | objc_v2_ivar_list_ptr = |
373 | build_pointer_type (xref_tag (RECORD_TYPE, | |
d764a8e6 IS |
374 | get_identifier ("_ivar_list_t"))); |
375 | ||
944fb799 | 376 | objc_prop_list_ptr = |
d764a8e6 IS |
377 | build_pointer_type (xref_tag (RECORD_TYPE, |
378 | get_identifier ("_prop_list_t"))); | |
944fb799 | 379 | |
d764a8e6 IS |
380 | build_v2_class_templates (); |
381 | build_v2_super_template (); | |
382 | build_v2_protocol_template (); | |
383 | build_v2_category_template (); | |
384 | ||
385 | /* id objc_msgSend_fixup_rtp (id, struct message_ref_t*, ...); */ | |
386 | type = build_varargs_function_type_list (objc_object_type, | |
387 | objc_object_type, | |
388 | objc_v2_selector_type, | |
389 | NULL_TREE); | |
390 | umsg_fixup_decl = add_builtin_function ("objc_msgSend_fixup", | |
391 | type, 0, NOT_BUILT_IN, | |
392 | NULL, NULL_TREE); | |
393 | TREE_NOTHROW (umsg_fixup_decl) = 0; | |
394 | ||
395 | /* id objc_msgSend_stret_fixup_rtp (id, struct message_ref_t*, ...); */ | |
396 | umsg_stret_fixup_decl = add_builtin_function ("objc_msgSend_stret_fixup", | |
397 | type, 0, NOT_BUILT_IN, | |
398 | NULL, NULL_TREE); | |
399 | TREE_NOTHROW (umsg_stret_fixup_decl) = 0; | |
400 | ||
401 | /* id objc_msgSendId_fixup_rtp (id, struct message_ref_t*, ...); */ | |
402 | umsg_id_fixup_decl = add_builtin_function ("objc_msgSendId_fixup", | |
403 | type, 0, NOT_BUILT_IN, | |
404 | NULL, NULL_TREE); | |
405 | TREE_NOTHROW (umsg_id_fixup_decl) = 0; | |
406 | ||
944fb799 | 407 | /* id objc_msgSendId_stret_fixup_rtp |
d764a8e6 IS |
408 | (id, struct message_ref_t*, ...); */ |
409 | umsg_id_stret_fixup_decl = add_builtin_function ("objc_msgSendId_stret_fixup", | |
410 | type, 0, NOT_BUILT_IN, | |
411 | NULL, NULL_TREE); | |
412 | TREE_NOTHROW (umsg_id_stret_fixup_decl) = 0; | |
413 | ||
944fb799 | 414 | /* id objc_msgSendSuper2_fixup_rtp |
d764a8e6 IS |
415 | (struct objc_super *, struct message_ref_t*, ...); */ |
416 | type = build_varargs_function_type_list (objc_object_type, | |
417 | objc_super_type, | |
418 | objc_v2_super_selector_type, | |
419 | NULL_TREE); | |
420 | umsg_id_super2_fixup_decl = add_builtin_function ("objc_msgSendSuper2_fixup", | |
421 | type, 0, NOT_BUILT_IN, | |
422 | NULL, NULL_TREE); | |
423 | TREE_NOTHROW (umsg_id_super2_fixup_decl) = 0; | |
424 | ||
944fb799 | 425 | /* id objc_msgSendSuper2_stret_fixup_rtp |
d764a8e6 | 426 | (struct objc_super *, struct message_ref_t*, ...); */ |
944fb799 | 427 | umsg_id_super2_stret_fixup_decl = |
d764a8e6 | 428 | add_builtin_function ("objc_msgSendSuper2_stret_fixup", |
944fb799 | 429 | type, 0, NOT_BUILT_IN, |
d764a8e6 IS |
430 | NULL, NULL_TREE); |
431 | TREE_NOTHROW (umsg_id_super2_stret_fixup_decl) = 0; | |
432 | ||
433 | /* Present in the library, but unused by the FE. */ | |
944fb799 | 434 | /* Protocol *objc_getProtocol (const char *) |
d764a8e6 IS |
435 | type = build_function_type_list (objc_protocol_type, |
436 | const_string_type_node, | |
437 | NULL_TREE); | |
438 | objc_v2_getprotocol_decl = add_builtin_function ("objc_getProtocol", | |
439 | type, 0, NOT_BUILT_IN, | |
440 | NULL, NULL_TREE); | |
441 | TREE_NOTHROW (objc_v2_getprotocol_decl) = 0;*/ | |
442 | ||
443 | UOBJC_V2_CACHE_decl = create_extern_decl (ptr_type_node, | |
444 | "_objc_empty_cache"); | |
445 | ||
446 | UOBJC_V2_VTABLE_decl = create_extern_decl (objc_v2_imp_type, | |
447 | "_objc_empty_vtable"); | |
448 | ||
449 | /* id objc_getClass (const char *); */ | |
450 | type = build_function_type_list (objc_object_type, | |
451 | const_string_type_node, | |
452 | NULL_TREE); | |
944fb799 | 453 | objc_get_class_decl = add_builtin_function (TAG_GETCLASS, |
d764a8e6 IS |
454 | type, 0, NOT_BUILT_IN, |
455 | NULL, NULL_TREE); | |
456 | ||
457 | /* id objc_getMetaClass (const char *); */ | |
944fb799 | 458 | objc_get_meta_class_decl = add_builtin_function (TAG_GETMETACLASS, |
d764a8e6 IS |
459 | type, 0, NOT_BUILT_IN, |
460 | NULL, NULL_TREE); | |
461 | ||
c2beaa02 NP |
462 | /* This is the type of all of the following functions |
463 | objc_copyStruct(). */ | |
d764a8e6 IS |
464 | type = build_function_type_list (void_type_node, |
465 | ptr_type_node, | |
466 | const_ptr_type_node, | |
944fb799 | 467 | ptrdiff_type_node, |
d764a8e6 IS |
468 | boolean_type_node, |
469 | boolean_type_node, | |
470 | NULL_TREE); | |
471 | /* Declare the following function: | |
472 | void | |
944fb799 | 473 | objc_copyStruct (void *destination, const void *source, |
c2beaa02 | 474 | ptrdiff_t size, BOOL is_atomic, BOOL has_strong); */ |
d764a8e6 IS |
475 | objc_copyStruct_decl = add_builtin_function ("objc_copyStruct", |
476 | type, 0, NOT_BUILT_IN, | |
477 | NULL, NULL_TREE); | |
478 | TREE_NOTHROW (objc_copyStruct_decl) = 0; | |
479 | objc_getPropertyStruct_decl = NULL_TREE; | |
480 | objc_setPropertyStruct_decl = NULL_TREE; | |
481 | ||
482 | gcc_assert (!flag_objc_sjlj_exceptions); | |
483 | ||
c2beaa02 NP |
484 | /* Although we warn that fobjc-exceptions is required for exceptions |
485 | code, we carry on and create it anyway. */ | |
d764a8e6 IS |
486 | |
487 | /* This can be required, even when exceptions code is not present, | |
c2beaa02 NP |
488 | when an __attribute__((objc_exception)) is applied to a |
489 | class. */ | |
d764a8e6 IS |
490 | build_v2_ehtype_template (); |
491 | ||
492 | /* void * objc_begin_catch (void *) */ | |
491add72 NF |
493 | type = build_function_type_list (ptr_type_node, |
494 | ptr_type_node, NULL_TREE); | |
d764a8e6 IS |
495 | |
496 | objc2_begin_catch_decl = add_builtin_function ("objc_begin_catch", | |
497 | type, 0, NOT_BUILT_IN, | |
498 | NULL, NULL_TREE); | |
499 | TREE_NOTHROW (objc2_begin_catch_decl) = 0; | |
500 | ||
501 | /* void objc_end_catch () */ | |
491add72 | 502 | type = build_function_type_list (void_type_node, NULL_TREE); |
d764a8e6 IS |
503 | objc2_end_catch_decl = add_builtin_function ("objc_end_catch", |
504 | type, 0, NOT_BUILT_IN, | |
505 | NULL, NULL_TREE); | |
506 | TREE_NOTHROW (objc2_end_catch_decl) = 0; | |
507 | ||
508 | /* void objc_exception_rethrow (void) */ | |
944fb799 | 509 | objc_rethrow_exception_decl = |
d764a8e6 IS |
510 | add_builtin_function ("objc_exception_rethrow", |
511 | type, 0, NOT_BUILT_IN, | |
512 | NULL, NULL_TREE); | |
513 | TREE_NOTHROW (objc_rethrow_exception_decl) = 0; | |
514 | using_eh_for_cleanups (); | |
515 | lang_hooks.eh_runtime_type = next_runtime_02_eh_type; | |
516 | lang_hooks.eh_personality = objc_eh_personality; | |
517 | } | |
518 | ||
519 | /* NOTE --- templates --- */ | |
520 | ||
c2beaa02 NP |
521 | /* Set 'objc_v2_message_ref_template' to the data type node for |
522 | 'struct _message_ref_t'. This needs to be done just once per | |
523 | compilation. Also Set 'objc_v2_super_message_ref_template' to data | |
524 | type node for 'struct _super_message_ref_t'. */ | |
d764a8e6 | 525 | |
c2beaa02 NP |
526 | /* struct _message_ref_t |
527 | { | |
d764a8e6 IS |
528 | IMP messenger; |
529 | SEL name; | |
530 | }; | |
531 | where IMP is: id (*) (id, _message_ref_t*, ...) | |
532 | */ | |
533 | ||
c2beaa02 NP |
534 | /* struct _super_message_ref_t |
535 | { | |
d764a8e6 IS |
536 | SUPER_IMP messenger; |
537 | SEL name; | |
538 | }; | |
539 | where SUPER_IMP is: id (*) ( super_t*, _super_message_ref_t*, ...) | |
540 | */ | |
541 | ||
542 | static void | |
543 | build_v2_message_ref_templates (void) | |
544 | { | |
545 | tree ptr_message_ref_t; | |
546 | tree decls, *chain = NULL; | |
547 | ||
548 | /* struct _message_ref_t {...} */ | |
549 | objc_v2_message_ref_template = | |
550 | objc_start_struct (get_identifier ("_message_ref_t")); | |
551 | ||
552 | /* IMP messenger; */ | |
944fb799 MS |
553 | ptr_message_ref_t = |
554 | build_pointer_type (xref_tag (RECORD_TYPE, | |
d764a8e6 IS |
555 | get_identifier ("_message_ref_t"))); |
556 | ||
944fb799 MS |
557 | objc_v2_imp_type = |
558 | build_pointer_type (build_function_type_list | |
d764a8e6 IS |
559 | (objc_object_type, |
560 | objc_object_type, | |
561 | ptr_message_ref_t, | |
562 | NULL_TREE)); | |
563 | ||
564 | decls = add_field_decl (objc_v2_imp_type, "messenger", &chain); | |
565 | ||
566 | /* SEL name; */ | |
567 | add_field_decl (objc_selector_type, "name", &chain); | |
568 | ||
569 | objc_finish_struct (objc_v2_message_ref_template, decls); | |
570 | ||
571 | objc_v2_selector_type = build_pointer_type (objc_v2_message_ref_template); | |
572 | ||
573 | chain = NULL; | |
574 | /* struct _super_message_ref_t {...} */ | |
575 | objc_v2_super_message_ref_template = | |
576 | objc_start_struct (get_identifier ("_super_message_ref_t")); | |
577 | ||
578 | /* SUPER_IMP messenger; */ | |
944fb799 MS |
579 | ptr_message_ref_t = build_pointer_type |
580 | (xref_tag (RECORD_TYPE, | |
d764a8e6 IS |
581 | get_identifier ("_super_message_ref_t"))); |
582 | ||
944fb799 MS |
583 | objc_v2_super_imp_type = |
584 | build_pointer_type (build_function_type_list | |
d764a8e6 IS |
585 | (objc_object_type, |
586 | objc_super_type, | |
587 | ptr_message_ref_t, | |
588 | NULL_TREE)); | |
589 | ||
590 | add_field_decl (objc_v2_super_imp_type, "messenger", &chain); | |
591 | ||
592 | /* SEL name; */ | |
593 | add_field_decl (objc_selector_type, "name", &chain); | |
594 | ||
595 | objc_finish_struct (objc_v2_super_message_ref_template, decls); | |
944fb799 | 596 | objc_v2_super_selector_type = |
d764a8e6 IS |
597 | build_pointer_type (objc_v2_super_message_ref_template); |
598 | } | |
599 | ||
600 | /* Build following types which represent each class implementation. | |
601 | ||
c2beaa02 NP |
602 | struct class_ro_t |
603 | { | |
d764a8e6 IS |
604 | uint32_t const flags; |
605 | uint32_t const instanceStart; | |
606 | uint32_t const instanceSize; | |
607 | #ifdef __LP64__ | |
608 | uint32_t const reserved; | |
609 | #endif | |
610 | const uint8_t * const ivarLayout; | |
611 | const char *const name; | |
612 | const struct method_list_t * const baseMethods; | |
613 | const struct objc_protocol_list *const baseProtocols; | |
614 | const struct ivar_list_t *const ivars; | |
615 | const uint8_t * const weakIvarLayout; | |
616 | const struct _prop_list_t * const properties; | |
617 | }; | |
618 | ||
c2beaa02 NP |
619 | struct class_t |
620 | { | |
d764a8e6 IS |
621 | struct class_t *isa; |
622 | struct class_t *superclass; | |
623 | void *cache; | |
624 | IMP *vtable; | |
944fb799 | 625 | |
d764a8e6 IS |
626 | ...When this is active - it will point to a rw version, but |
627 | when we build the meta-data we point it to the ro... | |
628 | struct class_ro_t *data; | |
629 | }; | |
630 | ||
631 | */ | |
632 | ||
633 | static void | |
634 | build_v2_class_templates (void) | |
635 | { | |
636 | tree cnst_strg_type; | |
637 | tree decls, *chain = NULL; | |
638 | ||
639 | /* struct class_ro_t {...} */ | |
944fb799 | 640 | objc_v2_class_ro_template = |
d764a8e6 IS |
641 | objc_start_struct (get_identifier (UTAG_V2_CLASS_RO)); |
642 | ||
643 | /* uint32_t const flags; */ | |
644 | decls = add_field_decl (integer_type_node, "flags", &chain); | |
645 | ||
c2beaa02 | 646 | /* uint32_t const instanceStart; */ |
d764a8e6 IS |
647 | add_field_decl (integer_type_node, "instanceStart", &chain); |
648 | ||
c2beaa02 | 649 | /* uint32_t const instanceSize; */ |
d764a8e6 IS |
650 | add_field_decl (integer_type_node, "instanceSize", &chain); |
651 | ||
c2beaa02 NP |
652 | /* This ABI is currently only used on m64 NeXT. We always |
653 | explicitly declare the alignment padding. */ | |
654 | /* uint32_t const reserved; */ | |
d764a8e6 IS |
655 | add_field_decl (integer_type_node, "reserved", &chain); |
656 | ||
c2beaa02 | 657 | /* const uint8_t * const ivarLayout; */ |
d764a8e6 IS |
658 | cnst_strg_type = build_pointer_type (unsigned_char_type_node); |
659 | add_field_decl (cnst_strg_type, "ivarLayout", &chain); | |
660 | ||
661 | /* const char *const name; */ | |
662 | add_field_decl (string_type_node, "name", &chain); | |
663 | ||
c2beaa02 | 664 | /* const struct method_list_t * const baseMethods; */ |
d764a8e6 IS |
665 | add_field_decl (objc_method_list_ptr, "baseMethods", &chain); |
666 | ||
c2beaa02 | 667 | /* const struct objc_protocol_list *const baseProtocols; */ |
944fb799 MS |
668 | add_field_decl (build_pointer_type |
669 | (xref_tag (RECORD_TYPE, | |
d764a8e6 IS |
670 | get_identifier (UTAG_V2_PROTOCOL_LIST))), |
671 | "baseProtocols", &chain); | |
672 | ||
c2beaa02 | 673 | /* const struct ivar_list_t *const ivars; */ |
944fb799 | 674 | add_field_decl (objc_v2_ivar_list_ptr, "ivars", &chain); |
d764a8e6 IS |
675 | |
676 | /* const uint8_t * const weakIvarLayout; */ | |
677 | add_field_decl (cnst_strg_type, "weakIvarLayout", &chain); | |
678 | ||
c2beaa02 | 679 | /* struct _prop_list_t * baseProperties; */ |
d764a8e6 IS |
680 | add_field_decl (objc_prop_list_ptr, "baseProperties", &chain); |
681 | ||
682 | objc_finish_struct (objc_v2_class_ro_template, decls); | |
683 | ||
684 | chain = NULL; | |
685 | /* struct class_t {...} */ | |
944fb799 | 686 | objc_v2_class_template = |
d764a8e6 IS |
687 | objc_start_struct (get_identifier (UTAG_V2_CLASS)); |
688 | ||
689 | /* struct class_t *isa; */ | |
690 | decls = add_field_decl (build_pointer_type (objc_v2_class_template), | |
691 | "isa", &chain); | |
692 | ||
c2beaa02 | 693 | /* struct class_t * const superclass; */ |
d764a8e6 IS |
694 | add_field_decl (build_pointer_type (objc_v2_class_template), |
695 | "superclass", &chain); | |
696 | ||
697 | /* void *cache; */ | |
698 | add_field_decl (build_pointer_type (void_type_node), "cache", &chain); | |
699 | ||
700 | /* IMP *vtable; */ | |
701 | add_field_decl (build_pointer_type (objc_v2_imp_type), "vtable", &chain); | |
702 | ||
703 | /* struct class_ro_t *ro; */ | |
944fb799 | 704 | add_field_decl (build_pointer_type (objc_v2_class_ro_template), "ro", &chain); |
d764a8e6 IS |
705 | |
706 | objc_finish_struct (objc_v2_class_template, decls); | |
707 | } | |
708 | ||
c2beaa02 NP |
709 | /* struct _objc_super |
710 | { | |
d764a8e6 IS |
711 | struct _objc_object *self; |
712 | Class cls; | |
c2beaa02 | 713 | }; */ |
d764a8e6 IS |
714 | void |
715 | build_v2_super_template (void) | |
716 | { | |
717 | tree decls, *chain = NULL; | |
718 | ||
719 | objc_super_template = objc_start_struct (get_identifier (UTAG_SUPER)); | |
720 | ||
721 | /* struct _objc_object *self; */ | |
722 | decls = add_field_decl (objc_object_type, "self", &chain); | |
723 | ||
724 | /* Class cls; */ | |
725 | add_field_decl (objc_class_type, "cls", &chain); | |
726 | ||
727 | objc_finish_struct (objc_super_template, decls); | |
728 | } | |
729 | ||
c2beaa02 NP |
730 | /* struct protocol_t |
731 | { | |
944fb799 | 732 | Class isa; |
d764a8e6 IS |
733 | const char * const protocol_name; |
734 | const struct protocol_list_t * const protocol_list; | |
735 | const struct method_list_t * const instance_methods; | |
736 | const struct method_list_t * const class_methods; | |
737 | const struct method_list_t * optionalInstanceMethods; | |
738 | const struct method_list_t * optionalClassMethod | |
739 | const struct _prop_list_t * const properties; | |
740 | const uint32_t size; | |
741 | const uint32_t flags; | |
742 | } | |
743 | */ | |
744 | static void | |
745 | build_v2_protocol_template (void) | |
746 | { | |
747 | tree decls, *chain = NULL; | |
748 | ||
944fb799 | 749 | objc_v2_protocol_template = |
d764a8e6 IS |
750 | objc_start_struct (get_identifier (UTAG_V2_PROTOCOL)); |
751 | ||
c2beaa02 | 752 | /* Class isa; */ |
d764a8e6 IS |
753 | decls = add_field_decl (objc_object_type, "isa", &chain); |
754 | ||
c2beaa02 | 755 | /* char *protocol_name; */ |
d764a8e6 IS |
756 | add_field_decl (string_type_node, "protocol_name", &chain); |
757 | ||
758 | /* const struct protocol_list_t * const protocol_list; */ | |
759 | add_field_decl (build_pointer_type (objc_v2_protocol_template), | |
760 | "protocol_list", &chain); | |
761 | ||
762 | /* const struct method_list_t * const instance_methods; */ | |
763 | add_field_decl (objc_method_proto_list_ptr, "instance_methods", &chain); | |
764 | ||
765 | /* const struct method_list_t * const class_methods; */ | |
766 | add_field_decl (objc_method_proto_list_ptr, "class_methods", &chain); | |
767 | ||
c2beaa02 | 768 | /* const struct method_list_t * optionalInstanceMethods; */ |
d764a8e6 IS |
769 | add_field_decl (objc_method_proto_list_ptr, "optionalInstanceMethods", &chain); |
770 | ||
c2beaa02 | 771 | /* const struct method_list_t * optionalClassMethods; */ |
d764a8e6 IS |
772 | add_field_decl (objc_method_proto_list_ptr, "optionalClassMethods", &chain); |
773 | ||
774 | /* struct _prop_list_t * properties; */ | |
775 | add_field_decl (objc_prop_list_ptr, "properties", &chain); | |
776 | ||
c2beaa02 | 777 | /* const uint32_t size; */ |
d764a8e6 IS |
778 | add_field_decl (integer_type_node, "size", &chain); |
779 | ||
c2beaa02 | 780 | /* const uint32_t flags; */ |
d764a8e6 IS |
781 | add_field_decl (integer_type_node, "flags", &chain); |
782 | ||
783 | objc_finish_struct (objc_v2_protocol_template, decls); | |
784 | } | |
785 | ||
786 | /* Build type for a category: | |
c2beaa02 NP |
787 | struct category_t |
788 | { | |
d764a8e6 IS |
789 | const char * const name; |
790 | struct class_t *const cls; | |
791 | const struct method_list_t * const instance_methods; | |
792 | const struct method_list_t * const class_methods; | |
793 | const struct protocol_list_t * const protocols; | |
794 | const struct _prop_list_t * const properties; | |
795 | } | |
796 | */ | |
797 | ||
798 | static void | |
799 | build_v2_category_template (void) | |
800 | { | |
801 | tree decls, *chain = NULL; | |
802 | ||
944fb799 | 803 | objc_v2_category_template = |
d764a8e6 IS |
804 | objc_start_struct (get_identifier ("_category_t")); |
805 | ||
806 | /* char *name; */ | |
807 | decls = add_field_decl (string_type_node, "name", &chain); | |
808 | ||
809 | /* struct class_t *const cls; */ | |
810 | add_field_decl (build_pointer_type (objc_v2_class_template), "cls", &chain); | |
811 | ||
812 | /* struct method_list_t *instance_methods; */ | |
813 | add_field_decl (objc_method_list_ptr, "instance_methods", &chain); | |
814 | ||
815 | /* struct method_list_t *class_methods; */ | |
816 | add_field_decl (objc_method_list_ptr, "class_methods", &chain); | |
817 | ||
818 | /* struct protocol_list_t *protocol_list; */ | |
819 | add_field_decl (build_pointer_type (objc_v2_protocol_template), | |
820 | "protocol_list", &chain ); | |
821 | ||
822 | /* struct _prop_list_t * properties; */ | |
823 | add_field_decl (objc_prop_list_ptr, "properties", &chain); | |
824 | ||
825 | objc_finish_struct (objc_v2_category_template, decls); | |
826 | } | |
827 | ||
828 | /* NOTE --- Decls, Identifiers, Names etc. --- */ | |
829 | ||
c2beaa02 NP |
830 | /* This routine is given a name and returns a matching extern variable |
831 | if one is found. */ | |
d764a8e6 IS |
832 | |
833 | static tree | |
834 | hash_name_lookup (hash *hashlist, tree name) | |
835 | { | |
836 | hash target; | |
837 | ||
838 | target = hashlist[IDENTIFIER_HASH_VALUE (name) % SIZEHASHTABLE]; | |
839 | ||
840 | while (target) | |
841 | { | |
842 | if (name == DECL_NAME (target->key)) | |
843 | return target->key; | |
844 | ||
845 | target = target->next; | |
846 | } | |
847 | return 0; | |
848 | } | |
849 | ||
c2beaa02 NP |
850 | /* This routine is given an extern variable and enters it in its hash |
851 | table. Note that hashing is done on its inner IDENTIFIER_NODE | |
852 | node. */ | |
d764a8e6 | 853 | |
944fb799 | 854 | static void |
d764a8e6 IS |
855 | hash_name_enter (hash *hashlist, tree id) |
856 | { | |
857 | hash obj; | |
858 | int slot = IDENTIFIER_HASH_VALUE (DECL_NAME (id)) % SIZEHASHTABLE; | |
859 | ||
860 | obj = ggc_alloc_hashed_entry (); | |
861 | obj->list = 0; | |
862 | obj->next = hashlist[slot]; | |
863 | obj->key = id; | |
864 | ||
865 | hashlist[slot] = obj; /* append to front */ | |
866 | } | |
867 | ||
868 | /* Create a declaration "extern <type> <name>;" | |
869 | The var will need to be finalized (e.g. by calling finish_var_decl()). */ | |
870 | ||
871 | static tree | |
872 | create_extern_decl (tree type, const char *name) | |
873 | { | |
874 | tree id = get_identifier (name); | |
875 | tree var = hash_name_lookup (extern_names, id); | |
876 | if (var) | |
877 | return var; | |
878 | /* New name. */ | |
944fb799 | 879 | var = start_var_decl (type, name); |
d764a8e6 IS |
880 | TREE_STATIC (var) = 0; |
881 | DECL_EXTERNAL (var) = 1; | |
882 | TREE_PUBLIC (var) = 1; | |
883 | hash_name_enter (extern_names, var); | |
884 | return var; | |
885 | } | |
886 | ||
887 | /* Create a globally visible definition for variable NAME of a given TYPE. The | |
888 | finish_var_decl() routine will need to be called on it afterwards. */ | |
889 | ||
890 | static tree | |
891 | create_global_decl (tree type, const char *name) | |
892 | { | |
893 | tree id = get_identifier (name); | |
894 | tree var = hash_name_lookup (extern_names, id); | |
895 | if (var) | |
896 | { | |
897 | DECL_EXTERNAL (var) = 0; | |
898 | TREE_STATIC (var) = 1; | |
899 | } | |
900 | else | |
901 | { | |
902 | var = start_var_decl (type, name); | |
903 | hash_name_enter (extern_names, var); | |
904 | } | |
905 | TREE_PUBLIC (var) = 1; | |
906 | return var; | |
907 | } | |
908 | ||
c2beaa02 NP |
909 | /* Create a symbol with __attribute__ ((visibility ("hidden"))) |
910 | attribute (private extern). */ | |
d764a8e6 | 911 | |
944fb799 | 912 | static tree |
d764a8e6 IS |
913 | create_hidden_decl (tree type, const char *name) |
914 | { | |
915 | tree decl = create_global_decl (type, name); | |
916 | DECL_VISIBILITY (decl) = VISIBILITY_HIDDEN; | |
917 | DECL_VISIBILITY_SPECIFIED (decl) = 1; | |
918 | return decl; | |
919 | } | |
920 | ||
921 | /* Irritatingly, we have a different superclass field name for ABI=2. */ | |
c2beaa02 NP |
922 | /* PS/TODO: The field name does not matter, it is only used internally |
923 | by the compiler. We can rename it to whatever we want. ;-) */ | |
d764a8e6 IS |
924 | |
925 | static tree | |
926 | next_runtime_abi_02_super_superclassfield_id (void) | |
927 | { | |
c2beaa02 NP |
928 | /* TODO: Simplify. Just always return get_identifier ("cls"), or at |
929 | most look it once at startup then always return it. */ | |
d764a8e6 IS |
930 | if (!super_superclassfield_id) |
931 | super_superclassfield_id = get_identifier ("cls"); | |
932 | return super_superclassfield_id; | |
933 | } | |
934 | ||
935 | static tree | |
936 | next_runtime_abi_02_class_decl (tree klass) | |
937 | { | |
938 | tree decl; | |
939 | char buf[BUFSIZE]; | |
944fb799 | 940 | snprintf (buf, BUFSIZE, "OBJC_CLASS_$_%s", |
d764a8e6 IS |
941 | IDENTIFIER_POINTER (CLASS_NAME (klass))); |
942 | /* ObjC2 classes are extern visible. */ | |
943 | decl = create_global_decl (objc_v2_class_template, buf); | |
944 | OBJCMETA (decl, objc_meta, meta_class); | |
945 | return decl; | |
946 | } | |
947 | ||
948 | static tree | |
949 | next_runtime_abi_02_metaclass_decl (tree klass) | |
950 | { | |
951 | tree decl; | |
952 | char buf[BUFSIZE]; | |
944fb799 | 953 | snprintf (buf, BUFSIZE, "OBJC_METACLASS_$_%s", |
d764a8e6 IS |
954 | IDENTIFIER_POINTER (CLASS_NAME (klass))); |
955 | /* ObjC2 classes are extern visible. */ | |
956 | decl = create_global_decl (objc_v2_class_template, buf); | |
957 | OBJCMETA (decl, objc_meta, meta_metaclass); | |
958 | return decl; | |
959 | } | |
960 | ||
961 | static tree | |
962 | next_runtime_abi_02_category_decl (tree klass) | |
963 | { | |
964 | tree decl; | |
965 | char buf[BUFSIZE]; | |
944fb799 | 966 | snprintf (buf, BUFSIZE, "_OBJC_Category_%s_on_%s", |
d764a8e6 IS |
967 | IDENTIFIER_POINTER (CLASS_SUPER_NAME (klass)), |
968 | IDENTIFIER_POINTER (CLASS_NAME (klass))); | |
969 | decl = start_var_decl (objc_v2_category_template, buf); | |
970 | OBJCMETA (decl, objc_meta, meta_category); | |
971 | return decl; | |
972 | } | |
973 | ||
974 | static tree | |
975 | next_runtime_abi_02_protocol_decl (tree p) | |
976 | { | |
977 | tree decl; | |
978 | char buf[BUFSIZE]; | |
979 | ||
980 | /* static struct _objc_protocol _OBJC_Protocol_<mumble>; */ | |
981 | snprintf (buf, BUFSIZE, "_OBJC_Protocol_%s", | |
982 | IDENTIFIER_POINTER (PROTOCOL_NAME (p))); | |
983 | decl = start_var_decl (objc_v2_protocol_template, buf); | |
984 | OBJCMETA (decl, objc_meta, meta_protocol); | |
985 | return decl; | |
986 | } | |
987 | ||
988 | static tree | |
989 | next_runtime_abi_02_string_decl (tree type, const char *name, string_section where) | |
990 | { | |
991 | tree var = start_var_decl (type, name); | |
992 | switch (where) | |
993 | { | |
994 | case class_names: | |
995 | OBJCMETA (var, objc_meta, meta_class_name); | |
996 | break; | |
997 | case meth_var_names: | |
998 | OBJCMETA (var, objc_meta, meta_meth_name); | |
999 | break; | |
1000 | case meth_var_types: | |
1001 | OBJCMETA (var, objc_meta, meta_meth_type); | |
1002 | break; | |
1003 | case prop_names_attr: | |
1004 | OBJCMETA (var, objc_meta, meta_prop_name_attr); | |
1005 | break; | |
944fb799 | 1006 | default: |
d764a8e6 IS |
1007 | OBJCMETA (var, objc_meta, meta_base); |
1008 | break; | |
1009 | } | |
1010 | return var; | |
1011 | } | |
1012 | ||
1013 | /* NOTE --- entry --- */ | |
1014 | ||
1015 | typedef struct GTY(()) ident_data_tuple { | |
1016 | tree ident; | |
1017 | tree data; | |
1018 | } ident_data_tuple ; | |
d764a8e6 | 1019 | |
c2beaa02 NP |
1020 | /* This routine creates a file scope static variable of type 'Class' |
1021 | to hold the address of a class. */ | |
d764a8e6 IS |
1022 | |
1023 | static tree | |
1024 | build_v2_class_reference_decl (tree ident) | |
1025 | { | |
1026 | tree decl; | |
1027 | char buf[BUFSIZE]; | |
1028 | ||
1029 | snprintf (buf, BUFSIZE, "_OBJC_ClassRef_%s", IDENTIFIER_POINTER (ident)); | |
1030 | decl = start_var_decl (objc_class_type, buf); | |
1031 | OBJCMETA (decl, objc_meta, meta_class_ref); | |
1032 | return decl; | |
1033 | } | |
1034 | ||
1035 | /* This routine builds a class refs entry for each class name used. | |
c2beaa02 NP |
1036 | Initially, a (static-ref, IDENT) tuple is added to the list. The |
1037 | ident is replaced with address of the class metadata (of type | |
1038 | 'Class') in the output routine. */ | |
d764a8e6 | 1039 | |
9771b263 | 1040 | static GTY (()) vec<ident_data_tuple, va_gc> *classrefs; |
d764a8e6 IS |
1041 | |
1042 | static tree | |
1043 | objc_v2_get_class_reference (tree ident) | |
1044 | { | |
1045 | tree decl; | |
1046 | ident_data_tuple e; | |
1047 | if (classrefs) | |
1048 | { | |
1049 | int count; | |
1050 | ident_data_tuple *ref; | |
9771b263 | 1051 | FOR_EACH_VEC_ELT (*classrefs, count, ref) |
d764a8e6 IS |
1052 | { |
1053 | if (ref->ident == ident) | |
1054 | { | |
1055 | if (!ref->data) | |
1056 | ref->data = build_v2_class_reference_decl (ident); | |
1057 | return ref->data; | |
1058 | } | |
1059 | } | |
1060 | } | |
1061 | else | |
1062 | /* Somewhat arbitrary initial provision. */ | |
9771b263 | 1063 | vec_alloc (classrefs, 16); |
c2beaa02 | 1064 | |
d764a8e6 IS |
1065 | /* We come here if we don't find the entry - or if the table was yet |
1066 | to be created. */ | |
1067 | decl = build_v2_class_reference_decl (ident); | |
1068 | e.ident = ident; | |
1069 | e.data = decl; | |
9771b263 | 1070 | vec_safe_push (classrefs, e); |
d764a8e6 IS |
1071 | return decl; |
1072 | } | |
1073 | ||
1074 | static tree | |
1075 | next_runtime_abi_02_get_class_reference (tree ident) | |
1076 | { | |
1077 | if (!flag_zero_link) | |
1078 | return objc_v2_get_class_reference (ident); | |
1079 | else | |
1080 | { | |
1081 | /* We fall back to using objc_getClass (). */ | |
9771b263 DN |
1082 | vec<tree, va_gc> *v; |
1083 | vec_alloc (v, 1); | |
d764a8e6 | 1084 | tree t; |
c2beaa02 | 1085 | /* ??? add_class_reference (ident); - is pointless, since the |
d764a8e6 IS |
1086 | system lib does not export the equivalent symbols. Maybe we |
1087 | need to build a class ref anyway. */ | |
1088 | t = my_build_string_pointer (IDENTIFIER_LENGTH (ident) + 1, | |
1089 | IDENTIFIER_POINTER (ident)); | |
9771b263 DN |
1090 | v->quick_push (t); |
1091 | t = build_function_call_vec (input_location, objc_get_class_decl, v, 0); | |
1092 | vec_free (v); | |
d764a8e6 IS |
1093 | return t; |
1094 | } | |
1095 | } | |
1096 | ||
6174da1b NF |
1097 | /* Used by build_function_type_for_method. Append the types for |
1098 | receiver & _cmd at the start of a method argument list to ARGTYPES. | |
1099 | CONTEXT is either METHOD_DEF or METHOD_REF, saying whether we are | |
1100 | trying to define a method or call one. SUPERFLAG says this is for a | |
1101 | send to super. METH may be NULL, in the case that there is no | |
1102 | prototype. */ | |
d764a8e6 | 1103 | |
6174da1b | 1104 | static void |
9771b263 DN |
1105 | next_runtime_abi_02_get_arg_type_list_base (vec<tree, va_gc> **argtypes, |
1106 | tree meth, int context, | |
1107 | int superflag) | |
d764a8e6 | 1108 | { |
6174da1b | 1109 | tree receiver_type; |
d764a8e6 | 1110 | |
d764a8e6 | 1111 | if (superflag) |
6174da1b | 1112 | receiver_type = objc_super_type; |
d764a8e6 | 1113 | else if (context == METHOD_DEF && TREE_CODE (meth) == INSTANCE_METHOD_DECL) |
6174da1b | 1114 | receiver_type = objc_instance_type; |
d764a8e6 | 1115 | else |
6174da1b | 1116 | receiver_type = objc_object_type; |
d764a8e6 | 1117 | |
9771b263 | 1118 | vec_safe_push (*argtypes, receiver_type); |
d764a8e6 | 1119 | /* Selector type - will eventually change to `int'. */ |
9771b263 DN |
1120 | vec_safe_push (*argtypes, |
1121 | superflag ? objc_v2_super_selector_type | |
1122 | : objc_v2_selector_type); | |
d764a8e6 IS |
1123 | } |
1124 | ||
1125 | /* TODO: Merge this with the message refs. */ | |
1126 | static tree | |
1127 | build_selector_reference_decl (tree ident) | |
1128 | { | |
1129 | tree decl; | |
1130 | char *t, buf[BUFSIZE]; | |
1131 | ||
1132 | snprintf (buf, BUFSIZE, "_OBJC_SelRef_%s", IDENTIFIER_POINTER (ident)); | |
1133 | t = buf; | |
1134 | while (*t) | |
1135 | { | |
944fb799 | 1136 | if (*t==':') |
d764a8e6 IS |
1137 | *t = '$'; /* Underscore would clash between foo:bar and foo_bar. */ |
1138 | t++; | |
1139 | } | |
1140 | decl = start_var_decl (objc_selector_type, buf); | |
1141 | OBJCMETA (decl, objc_meta, meta_sel_refs); | |
1142 | return decl; | |
1143 | } | |
1144 | ||
1145 | static tree | |
1146 | next_runtime_abi_02_build_selector_reference (location_t loc ATTRIBUTE_UNUSED, | |
1147 | tree ident, | |
1148 | tree proto ATTRIBUTE_UNUSED) | |
1149 | { | |
1150 | tree *chain = &sel_ref_chain; | |
1151 | tree expr; | |
1152 | ||
1153 | while (*chain) | |
1154 | { | |
1155 | if (TREE_VALUE (*chain) == ident) | |
1156 | return TREE_PURPOSE (*chain); | |
1157 | ||
1158 | chain = &TREE_CHAIN (*chain); | |
1159 | } | |
1160 | ||
1161 | expr = build_selector_reference_decl (ident); | |
1162 | *chain = tree_cons (expr, ident, NULL_TREE); | |
1163 | ||
1164 | return expr; | |
1165 | } | |
1166 | ||
1167 | /* Declare a variable of type 'struct message_ref_t'. */ | |
c2beaa02 NP |
1168 | /* This will be finished in build_v2_message_ref_translation_table (). |
1169 | We take an idea from LLVM in making the names a bit more connected | |
d764a8e6 IS |
1170 | and thus the asm more readable. */ |
1171 | ||
1172 | static tree | |
1173 | build_v2_message_reference_decl (tree sel_name, tree message_func_ident) | |
1174 | { | |
1175 | tree decl; | |
1176 | char buf[BUFSIZE], *t; | |
1177 | int offset = 12; | |
1178 | ||
c2beaa02 | 1179 | /* Skip past the objc_msgSend it's the same for all... */ |
d764a8e6 IS |
1180 | if (IDENTIFIER_POINTER (message_func_ident)[offset] == '_') |
1181 | offset++; | |
1182 | ||
1183 | snprintf (buf, BUFSIZE, "_OBJC_MsgRef_%s_%s", | |
1184 | &(IDENTIFIER_POINTER (message_func_ident)[offset]), | |
1185 | IDENTIFIER_POINTER (sel_name)); | |
1186 | t = buf; | |
1187 | while (*t) | |
1188 | { | |
944fb799 | 1189 | if (*t==':') |
d764a8e6 IS |
1190 | *t = '$'; /* Underscore would clash between foo:bar and foo_bar. */ |
1191 | t++; | |
1192 | } | |
1193 | decl = start_var_decl (objc_v2_message_ref_template, buf); | |
1194 | OBJCMETA (decl, objc_meta, meta_mref); | |
1195 | return decl; | |
1196 | } | |
1197 | ||
1198 | typedef struct GTY(()) msgref_entry { | |
1199 | tree func; | |
1200 | tree selname; | |
1201 | tree refdecl; | |
1202 | } msgref_entry; | |
d764a8e6 | 1203 | |
9771b263 | 1204 | static GTY (()) vec<msgref_entry, va_gc> *msgrefs; |
d764a8e6 | 1205 | |
c2beaa02 NP |
1206 | /* Build the list of (objc_msgSend_fixup_xxx, selector name), used |
1207 | later on to initialize the table of 'struct message_ref_t' | |
1208 | elements. */ | |
d764a8e6 IS |
1209 | |
1210 | static tree | |
1211 | build_v2_selector_messenger_reference (tree sel_name, tree message_func_decl) | |
1212 | { | |
1213 | tree decl; | |
1214 | msgref_entry e; | |
1215 | if (msgrefs) | |
1216 | { | |
1217 | int count; | |
1218 | msgref_entry *ref; | |
9771b263 | 1219 | FOR_EACH_VEC_ELT (*msgrefs, count, ref) |
d764a8e6 IS |
1220 | if (ref->func == message_func_decl && ref->selname == sel_name) |
1221 | return ref->refdecl; | |
1222 | } | |
1223 | else | |
1224 | /* Somewhat arbitrary initial provision. */ | |
9771b263 | 1225 | vec_alloc (msgrefs, 32); |
c2beaa02 | 1226 | |
d764a8e6 | 1227 | /* We come here if we don't find a match or at the start. */ |
944fb799 | 1228 | decl = build_v2_message_reference_decl (sel_name, |
d764a8e6 IS |
1229 | DECL_NAME (message_func_decl)); |
1230 | e.func = message_func_decl; | |
1231 | e.selname = sel_name; | |
1232 | e.refdecl = decl; | |
9771b263 | 1233 | vec_safe_push (msgrefs, e); |
d764a8e6 IS |
1234 | return decl; |
1235 | } | |
1236 | ||
1237 | static tree | |
1238 | build_v2_protocollist_ref_decl (tree protocol) | |
1239 | { | |
1240 | tree decl; | |
1241 | tree protocol_ident = PROTOCOL_NAME (protocol); | |
1242 | char buf[BUFSIZE]; | |
1243 | ||
944fb799 | 1244 | snprintf (buf, BUFSIZE, "_OBJC_ProtocolRef_%s", |
d764a8e6 IS |
1245 | IDENTIFIER_POINTER (protocol_ident)); |
1246 | /* TODO: other compiler versions make these hidden & weak. */ | |
1247 | decl = create_global_decl (objc_protocol_type, buf); | |
1248 | /* Let optimizer know that this decl is not removable. */ | |
1249 | DECL_PRESERVE_P (decl) = 1; | |
1250 | OBJCMETA (decl, objc_meta, meta_proto_ref); | |
1251 | return decl; | |
1252 | } | |
1253 | ||
1254 | typedef struct GTY(()) prot_list_entry { | |
1255 | tree id; | |
1256 | tree refdecl; | |
1257 | } prot_list_entry; | |
9771b263 | 1258 | static GTY (()) vec<prot_list_entry, va_gc> *protrefs; |
d764a8e6 IS |
1259 | |
1260 | static tree | |
1261 | objc_v2_get_protocol_reference (tree ident) | |
1262 | { | |
1263 | tree decl; | |
1264 | prot_list_entry e; | |
1265 | if (protrefs) | |
1266 | { | |
1267 | int count; | |
1268 | prot_list_entry *ref; | |
9771b263 | 1269 | FOR_EACH_VEC_ELT (*protrefs, count, ref) |
d764a8e6 IS |
1270 | { |
1271 | if (ref->id == ident) | |
1272 | { | |
1273 | if (!ref->refdecl) | |
1274 | ref->refdecl = build_v2_protocollist_ref_decl (ident); | |
1275 | return ref->refdecl; | |
1276 | } | |
1277 | } | |
1278 | } | |
1279 | else | |
1280 | /* Somewhat arbitrary initial provision. */ | |
9771b263 | 1281 | vec_alloc (protrefs, 32); |
c2beaa02 | 1282 | |
d764a8e6 IS |
1283 | /* We come here if we don't find the entry - or if the table was yet |
1284 | to be created. */ | |
1285 | decl = build_v2_protocollist_ref_decl (ident); | |
1286 | e.id = ident; | |
1287 | e.refdecl = decl; | |
9771b263 | 1288 | vec_safe_push (protrefs, e); |
d764a8e6 IS |
1289 | return decl; |
1290 | } | |
1291 | ||
1292 | static tree | |
1293 | next_runtime_abi_02_get_protocol_reference (location_t loc ATTRIBUTE_UNUSED, | |
1294 | tree p) | |
1295 | { | |
1296 | if (!PROTOCOL_FORWARD_DECL (p)) | |
1297 | PROTOCOL_FORWARD_DECL (p) = next_runtime_abi_02_protocol_decl (p); | |
1298 | ||
1299 | return objc_v2_get_protocol_reference (p); | |
1300 | } | |
1301 | ||
c2beaa02 NP |
1302 | /* This routine returns the ivar declaration, if component is a valid |
1303 | ivar field; NULL_TREE otherwise. On finding an ivar, it also | |
1304 | returns the class name in CLASS. */ | |
d764a8e6 IS |
1305 | |
1306 | static tree | |
1307 | objc_is_ivar (tree expr, tree component, tree *klass) | |
1308 | { | |
1309 | tree field = NULL_TREE; | |
1310 | tree basetype = TYPE_MAIN_VARIANT (TREE_TYPE (expr)); | |
1311 | ||
944fb799 | 1312 | if (TREE_CODE (basetype) == RECORD_TYPE |
d764a8e6 IS |
1313 | && TYPE_HAS_OBJC_INFO (basetype) && TYPE_OBJC_INTERFACE (basetype)) |
1314 | { | |
1315 | *klass = lookup_interface (OBJC_TYPE_NAME (basetype)); | |
1316 | if (*klass) | |
1317 | { | |
1318 | do | |
1319 | { | |
1320 | tree ivar_chain = CLASS_RAW_IVARS (*klass); | |
1321 | if (ivar_chain) | |
1322 | { | |
1323 | field = is_ivar (ivar_chain, component); | |
1324 | if (field != NULL_TREE) | |
1325 | break; | |
1326 | } | |
1327 | *klass = lookup_interface (CLASS_SUPER_NAME (*klass)); | |
1328 | } | |
1329 | while (*klass); | |
1330 | } | |
1331 | } | |
1332 | return field; | |
944fb799 | 1333 | } |
d764a8e6 IS |
1334 | |
1335 | static void | |
1336 | create_ivar_offset_name (char *buf, tree class_name, tree field_decl) | |
1337 | { | |
1338 | tree fname = DECL_NAME (field_decl); | |
1339 | ||
1340 | sprintf (buf, "OBJC_IVAR_$_%s.%s", IDENTIFIER_POINTER (class_name), | |
1341 | IDENTIFIER_POINTER (fname)); | |
1342 | return; | |
1343 | } | |
1344 | ||
c2beaa02 NP |
1345 | /* This routine generates new abi's ivar reference tree. It amounts |
1346 | to generating *(TYPE*)((char*)pObj + OFFSET_IVAR) when we normally | |
1347 | generate pObj->IVAR. OFFSET_IVAR is an 'extern' variable holding | |
1348 | the offset for 'IVAR' field. TYPE is type of IVAR field. */ | |
d764a8e6 IS |
1349 | |
1350 | static tree | |
1351 | objc_v2_build_ivar_ref (tree datum, tree component) | |
1352 | { | |
1353 | tree field, ref, class_name, offset, ftype, expr; | |
1354 | char var_offset_name[512]; | |
1355 | ||
1356 | field = objc_is_ivar (datum, component, &class_name); | |
1357 | if (!field) | |
1358 | return NULL_TREE; | |
1359 | ||
1360 | /* This routine only handles non-bitfield fields */ | |
c2beaa02 NP |
1361 | /* DECL_INITIAL macro is set to width of bitfield and can be relied |
1362 | on to check for bitfield ivars. Note that I cannot rely on | |
1363 | DECL_BIT_FIELD macro because it is only set when the whole struct | |
1364 | is seen (at finish_struct) and not when the ivar chain is | |
1365 | built. */ | |
d764a8e6 IS |
1366 | if (DECL_INITIAL (field)) |
1367 | return NULL_TREE; | |
1368 | ||
1369 | create_ivar_offset_name (var_offset_name, CLASS_NAME (class_name), field); | |
1370 | ||
1371 | offset = create_extern_decl (TREE_TYPE (size_zero_node), var_offset_name); | |
1372 | ||
1373 | ftype = TREE_TYPE (field); | |
1374 | ||
1375 | /* (char*)datum */ | |
944fb799 | 1376 | expr = build_c_cast (input_location, |
d764a8e6 IS |
1377 | string_type_node, build_fold_addr_expr (datum)); |
1378 | ||
1379 | /* (char*)datum + offset */ | |
5d49b6a7 | 1380 | expr = fold_build_pointer_plus_loc (input_location, expr, offset); |
944fb799 | 1381 | |
d764a8e6 IS |
1382 | /* (ftype*)((char*)datum + offset) */ |
1383 | expr = build_c_cast (input_location, build_pointer_type (ftype), expr); | |
1384 | ||
1385 | /* Finally: *(ftype*)((char*)datum + offset) */ | |
1386 | ref = build_indirect_ref (input_location, expr, RO_UNARY_STAR); | |
1387 | ||
c2beaa02 NP |
1388 | /* We must set type of the resulting expression to be the same as |
1389 | the field type. This is because, build_indirect_ref (...) | |
1390 | rebuilds the type which may result in lost information; as in the | |
1391 | case of protocol-qualified types (id <protocol> ). */ | |
d764a8e6 IS |
1392 | TREE_TYPE (ref) = ftype; |
1393 | ||
1394 | if (TREE_READONLY (datum) || TREE_READONLY (field)) | |
1395 | TREE_READONLY (ref) = 1; | |
1396 | ||
1397 | if (TREE_THIS_VOLATILE (datum) || TREE_THIS_VOLATILE (field)) | |
1398 | TREE_THIS_VOLATILE (ref) = 1; | |
1399 | ||
1400 | if (TREE_DEPRECATED (field)) | |
1401 | warn_deprecated_use (field, NULL_TREE); | |
1402 | ||
1403 | return ref; | |
1404 | } | |
1405 | ||
1406 | /* IVAR refs are made via an externally referenceable offset and built | |
1407 | on the fly. That is, unless they refer to (private) fields in the | |
587ae1e3 | 1408 | class structure. */ |
d764a8e6 | 1409 | static tree |
944fb799 | 1410 | next_runtime_abi_02_build_ivar_ref (location_t loc ATTRIBUTE_UNUSED, |
d764a8e6 IS |
1411 | tree base, tree id) |
1412 | { | |
1413 | tree ivar; | |
1414 | if ((ivar = objc_v2_build_ivar_ref (base, id))) | |
1415 | return ivar; | |
1416 | return objc_build_component_ref (base, id); | |
1417 | } | |
1418 | ||
c2beaa02 NP |
1419 | /* [super ...] references are listed here (and built into a table at |
1420 | meta -data emit time). */ | |
d764a8e6 IS |
1421 | static tree |
1422 | build_v2_superclass_ref_decl (tree ident, bool inst) | |
1423 | { | |
1424 | tree decl; | |
1425 | char buf[BUFSIZE]; | |
1426 | ||
1427 | snprintf (buf, BUFSIZE, "_OBJC_%sSuperRef_%s", (inst?"":"Meta"), | |
1428 | IDENTIFIER_POINTER (ident)); | |
1429 | decl = start_var_decl (objc_class_type, buf); | |
1430 | OBJCMETA (decl, objc_meta, meta_superclass_ref); | |
1431 | return decl; | |
1432 | } | |
1433 | ||
9771b263 DN |
1434 | static GTY (()) vec<ident_data_tuple, va_gc> *class_super_refs; |
1435 | static GTY (()) vec<ident_data_tuple, va_gc> *metaclass_super_refs; | |
d764a8e6 IS |
1436 | |
1437 | static tree | |
1438 | next_runtime_abi_02_get_class_super_ref (location_t loc ATTRIBUTE_UNUSED, | |
1439 | struct imp_entry *imp, bool inst_meth) | |
1440 | { | |
1441 | tree decl; | |
1442 | ident_data_tuple e; | |
1443 | tree id = CLASS_NAME (imp->imp_context); | |
9771b263 | 1444 | vec<ident_data_tuple, va_gc> *list = inst_meth ? class_super_refs |
d764a8e6 IS |
1445 | : metaclass_super_refs; |
1446 | ||
1447 | if (list) | |
1448 | { | |
1449 | int count; | |
1450 | ident_data_tuple *ref; | |
9771b263 | 1451 | FOR_EACH_VEC_ELT (*list, count, ref) |
d764a8e6 IS |
1452 | { |
1453 | if (ref->ident == id) | |
1454 | { | |
1455 | if (!ref->data) | |
1456 | ref->data = build_v2_superclass_ref_decl (id, inst_meth); | |
1457 | return ref->data; | |
1458 | } | |
1459 | } | |
1460 | } | |
1461 | else | |
1462 | { | |
1463 | /* Somewhat arbitrary initial provision. */ | |
1464 | if (inst_meth) | |
9771b263 DN |
1465 | { |
1466 | vec_alloc (class_super_refs, 16); | |
1467 | list = class_super_refs; | |
1468 | } | |
d764a8e6 | 1469 | else |
9771b263 DN |
1470 | { |
1471 | vec_alloc (metaclass_super_refs, 16); | |
1472 | list = metaclass_super_refs; | |
1473 | } | |
d764a8e6 IS |
1474 | } |
1475 | /* We come here if we don't find the entry - or if the table was yet | |
1476 | to be created. */ | |
1477 | decl = build_v2_superclass_ref_decl (id, inst_meth); | |
1478 | e.ident = id; | |
1479 | e.data = decl; | |
9771b263 | 1480 | vec_safe_push (list, e); |
d764a8e6 IS |
1481 | return decl; |
1482 | } | |
1483 | ||
1484 | static tree | |
944fb799 | 1485 | next_runtime_abi_02_get_category_super_ref (location_t loc ATTRIBUTE_UNUSED, |
d764a8e6 IS |
1486 | struct imp_entry *imp, bool inst_meth) |
1487 | { | |
c2beaa02 | 1488 | /* ??? is this OK when zero-link = true? */ |
d764a8e6 IS |
1489 | tree super_name = CLASS_SUPER_NAME (imp->imp_template); |
1490 | tree super_class; | |
1491 | ||
1492 | if (!flag_zero_link) | |
1493 | { | |
1494 | super_class = objc_get_class_reference (CLASS_NAME (imp->imp_template)); | |
1495 | ||
1496 | if (!inst_meth) | |
944fb799 | 1497 | |
d764a8e6 | 1498 | /* If we are in a class method, we must retrieve the |
c2beaa02 NP |
1499 | _metaclass_ for the current class, pointed at by the |
1500 | class's "isa" pointer. The following assumes that "isa" is | |
1501 | the first ivar in a class (which it must be). */ | |
944fb799 | 1502 | super_class = |
d764a8e6 IS |
1503 | build_indirect_ref (input_location, |
1504 | build_c_cast (input_location, | |
1505 | build_pointer_type (objc_class_type), | |
944fb799 | 1506 | super_class), |
d764a8e6 IS |
1507 | RO_UNARY_STAR); |
1508 | return super_class; | |
1509 | } | |
1510 | /* ??? Do we need to add the class ref anway for zero-link? */ | |
1511 | /* else do it the slow way. */ | |
1512 | super_class = (inst_meth ? objc_get_class_decl : objc_get_meta_class_decl); | |
d764a8e6 IS |
1513 | super_name = my_build_string_pointer (IDENTIFIER_LENGTH (super_name) + 1, |
1514 | IDENTIFIER_POINTER (super_name)); | |
c2beaa02 | 1515 | /* super_class = objc_get{Meta}Class("CLASS_SUPER_NAME"); */ |
d764a8e6 IS |
1516 | return build_function_call (input_location, |
1517 | super_class, | |
1518 | build_tree_list (NULL_TREE, super_name)); | |
1519 | } | |
1520 | ||
1521 | static tree | |
1522 | next_runtime_abi_02_receiver_is_class_object (tree receiver) | |
1523 | { | |
1524 | if (TREE_CODE (receiver) == VAR_DECL | |
1525 | && IS_CLASS (TREE_TYPE (receiver)) | |
9771b263 | 1526 | && vec_safe_length (classrefs)) |
d764a8e6 IS |
1527 | { |
1528 | int count; | |
1529 | ident_data_tuple *ref; | |
1530 | /* The receiver is a variable created by build_class_reference_decl. */ | |
9771b263 | 1531 | FOR_EACH_VEC_ELT (*classrefs, count, ref) |
d764a8e6 IS |
1532 | if (ref->data == receiver) |
1533 | return ref->ident; | |
1534 | } | |
1535 | return NULL_TREE; | |
1536 | } | |
1537 | ||
6174da1b NF |
1538 | /* Assign all arguments in VALUES which have side-effect to a temporary |
1539 | and replaced that argument in VALUES list with the temporary. The | |
1540 | arguments will be passed to a function with FNTYPE. */ | |
d764a8e6 IS |
1541 | |
1542 | static tree | |
6174da1b | 1543 | objc_copy_to_temp_side_effect_params (tree fntype, tree values) |
d764a8e6 | 1544 | { |
6174da1b NF |
1545 | tree valtail; |
1546 | function_args_iterator iter; | |
1547 | ||
c2beaa02 | 1548 | /* Skip over receiver and the &_msf_ref types. */ |
6174da1b NF |
1549 | function_args_iter_init (&iter, fntype); |
1550 | function_args_iter_next (&iter); | |
1551 | function_args_iter_next (&iter); | |
d764a8e6 | 1552 | |
944fb799 | 1553 | for (valtail = values; valtail; |
6174da1b | 1554 | valtail = TREE_CHAIN (valtail), function_args_iter_next (&iter)) |
d764a8e6 IS |
1555 | { |
1556 | tree value = TREE_VALUE (valtail); | |
6174da1b | 1557 | tree type = function_args_iter_cond (&iter); |
d764a8e6 | 1558 | if (type == NULL_TREE) |
944fb799 | 1559 | break; |
d764a8e6 IS |
1560 | if (!TREE_SIDE_EFFECTS (value)) |
1561 | continue; | |
c2beaa02 | 1562 | /* To prevent re-evaluation. */ |
d764a8e6 IS |
1563 | value = save_expr (value); |
1564 | add_stmt (value); | |
1565 | TREE_VALUE (valtail) = value; | |
1566 | } | |
1567 | return values; | |
1568 | } | |
1569 | ||
1570 | /* Build the new abi's messaging library call. It looks like: | |
c2beaa02 | 1571 | (*_msg.messenger) (receiver, &_msg, ...) */ |
d764a8e6 IS |
1572 | |
1573 | static tree | |
1574 | build_v2_build_objc_method_call (int super_flag, tree method_prototype, | |
1575 | tree lookup_object, tree selector, | |
1576 | tree method_params, | |
1577 | bool check_for_nil) | |
1578 | { | |
1579 | tree ret_val; | |
1580 | tree sender, rcv_p, t; | |
1581 | tree ret_type | |
1582 | = (method_prototype | |
1583 | ? TREE_VALUE (TREE_TYPE (method_prototype)) | |
1584 | : objc_object_type); | |
6174da1b | 1585 | tree ftype = build_function_type_for_method (ret_type, method_prototype, |
d764a8e6 | 1586 | METHOD_REF, super_flag); |
d764a8e6 IS |
1587 | tree sender_cast; |
1588 | ||
1589 | if (method_prototype && METHOD_TYPE_ATTRIBUTES (method_prototype)) | |
1590 | ftype = build_type_attribute_variant ( | |
1591 | ftype, METHOD_TYPE_ATTRIBUTES (method_prototype)); | |
1592 | ||
1593 | sender_cast = build_pointer_type (ftype); | |
1594 | ||
1595 | if (check_for_nil) | |
6174da1b | 1596 | method_params = objc_copy_to_temp_side_effect_params (ftype, |
d764a8e6 IS |
1597 | method_params); |
1598 | ||
c2beaa02 | 1599 | /* Get &message_ref_t.messenger. */ |
944fb799 | 1600 | sender = build_c_cast (input_location, |
d764a8e6 IS |
1601 | build_pointer_type (super_flag |
1602 | ? objc_v2_super_imp_type | |
1603 | : objc_v2_imp_type), | |
1604 | selector); | |
1605 | ||
1606 | sender = build_indirect_ref (input_location, sender, RO_UNARY_STAR); | |
1607 | ||
1608 | rcv_p = (super_flag ? objc_super_type : objc_object_type); | |
1609 | ||
1610 | lookup_object = build_c_cast (input_location, rcv_p, lookup_object); | |
1611 | ||
1612 | /* Use SAVE_EXPR to avoid evaluating the receiver twice. */ | |
1613 | lookup_object = save_expr (lookup_object); | |
1614 | ||
1615 | method_params = tree_cons (NULL_TREE, lookup_object, | |
1616 | tree_cons (NULL_TREE, selector, | |
1617 | method_params)); | |
1618 | t = build3 (OBJ_TYPE_REF, sender_cast, sender, lookup_object, size_zero_node); | |
1619 | ret_val = build_function_call (input_location, t, method_params); | |
1620 | if (check_for_nil) | |
1621 | { | |
1622 | /* receiver != nil ? ret_val : 0 */ | |
1623 | tree ftree; | |
1624 | tree ifexp; | |
1625 | ||
1626 | if (TREE_CODE (ret_type) == RECORD_TYPE | |
1627 | || TREE_CODE (ret_type) == UNION_TYPE) | |
1628 | { | |
9771b263 | 1629 | vec<constructor_elt, va_gc> *rtt = NULL; |
c2beaa02 NP |
1630 | /* ??? CHECKME. hmmm..... think we need something more |
1631 | here. */ | |
d764a8e6 IS |
1632 | CONSTRUCTOR_APPEND_ELT (rtt, NULL_TREE, NULL_TREE); |
1633 | ftree = objc_build_constructor (ret_type, rtt); | |
1634 | } | |
1635 | else | |
1636 | ftree = fold_convert (ret_type, integer_zero_node); | |
1637 | ||
944fb799 MS |
1638 | ifexp = build_binary_op (input_location, NE_EXPR, |
1639 | lookup_object, | |
d764a8e6 IS |
1640 | fold_convert (rcv_p, integer_zero_node), 1); |
1641 | ||
1642 | #ifdef OBJCPLUS | |
5951f9df PC |
1643 | ret_val = build_conditional_expr (input_location, |
1644 | ifexp, ret_val, ftree, | |
1645 | tf_warning_or_error); | |
d764a8e6 IS |
1646 | #else |
1647 | /* ??? CHECKME. */ | |
944fb799 | 1648 | ret_val = build_conditional_expr (input_location, |
d764a8e6 IS |
1649 | ifexp, 1, |
1650 | ret_val, NULL_TREE, | |
1651 | ftree, NULL_TREE); | |
944fb799 | 1652 | #endif |
d764a8e6 IS |
1653 | } |
1654 | return ret_val; | |
1655 | } | |
1656 | ||
1657 | static tree | |
1658 | next_runtime_abi_02_build_objc_method_call (location_t loc, | |
1659 | tree method_prototype, | |
1660 | tree receiver, | |
1661 | tree rtype, | |
1662 | tree sel_name, | |
1663 | tree method_params, | |
1664 | int super) | |
1665 | { | |
1666 | tree ret_type, selector; | |
1667 | tree message_func_decl; | |
1668 | bool check_for_nil = flag_objc_nilcheck; | |
1669 | ||
944fb799 MS |
1670 | ret_type = method_prototype |
1671 | ? TREE_VALUE (TREE_TYPE (method_prototype)) | |
1672 | : objc_object_type; | |
d764a8e6 IS |
1673 | |
1674 | /* Do we need to check for nil receivers ? */ | |
c2beaa02 NP |
1675 | /* For now, message sent to classes need no nil check. In the |
1676 | future, class declaration marked as weak_import must be nil | |
1677 | checked. */ | |
944fb799 MS |
1678 | if (super |
1679 | || (TREE_CODE (receiver) == VAR_DECL | |
d764a8e6 IS |
1680 | && TREE_TYPE (receiver) == objc_class_type)) |
1681 | check_for_nil = false; | |
1682 | ||
1683 | if (!targetm.calls.struct_value_rtx (0, 0) | |
944fb799 MS |
1684 | && (TREE_CODE (ret_type) == RECORD_TYPE |
1685 | || TREE_CODE (ret_type) == UNION_TYPE) | |
d764a8e6 IS |
1686 | && targetm.calls.return_in_memory (ret_type, 0)) |
1687 | { | |
1688 | if (super) | |
1689 | message_func_decl = umsg_id_super2_stret_fixup_decl; | |
1690 | else | |
944fb799 MS |
1691 | message_func_decl = objc_is_id (rtype) |
1692 | ? umsg_id_stret_fixup_decl | |
1693 | : umsg_stret_fixup_decl; | |
d764a8e6 IS |
1694 | } |
1695 | else | |
1696 | { | |
1697 | if (super) | |
1698 | message_func_decl = umsg_id_super2_fixup_decl; | |
1699 | else | |
944fb799 MS |
1700 | message_func_decl = objc_is_id (rtype) |
1701 | ? umsg_id_fixup_decl | |
1702 | : umsg_fixup_decl; | |
d764a8e6 IS |
1703 | } |
1704 | ||
944fb799 | 1705 | selector = build_v2_selector_messenger_reference (sel_name, |
d764a8e6 IS |
1706 | message_func_decl); |
1707 | ||
1708 | /* selector = &_msg; */ | |
1709 | selector = build_unary_op (loc, ADDR_EXPR, selector, 0); | |
944fb799 MS |
1710 | |
1711 | selector = build_c_cast (loc, (super ? objc_v2_super_selector_type | |
d764a8e6 IS |
1712 | : objc_v2_selector_type), |
1713 | selector); | |
1714 | ||
1715 | /* (*_msg.messenger) (receiver, &_msg, ...); */ | |
1716 | return build_v2_build_objc_method_call (super, method_prototype, | |
944fb799 | 1717 | receiver, selector, |
d764a8e6 IS |
1718 | method_params, check_for_nil); |
1719 | } | |
1720 | ||
1721 | /* NOTE --- Constant String Class Stuff --- */ | |
1722 | ||
1723 | static bool | |
1724 | next_runtime_abi_02_setup_const_string_class_decl (void) | |
1725 | { | |
1726 | if (!constant_string_global_id) | |
1727 | { | |
1728 | /* Hopefully, this should not represent a serious limitation. */ | |
1729 | char buf[BUFSIZE]; | |
1730 | snprintf (buf, BUFSIZE, "OBJC_CLASS_$_%s", constant_string_class_name); | |
1731 | constant_string_global_id = get_identifier (buf); | |
1732 | } | |
1733 | ||
1734 | string_class_decl = lookup_name (constant_string_global_id); | |
1735 | ||
c2beaa02 NP |
1736 | /* In OBJC2 abi, constant string class reference refers to class |
1737 | name for NSConstantString class. This declaration may not be | |
1738 | available yet (in fact it is not in most cases). So, declare an | |
1739 | extern OBJC_CLASS_$_NSConstantString in its place. */ | |
d764a8e6 | 1740 | if (!string_class_decl) |
944fb799 | 1741 | string_class_decl = |
d764a8e6 IS |
1742 | create_extern_decl (objc_v2_class_template, |
1743 | IDENTIFIER_POINTER (constant_string_global_id)); | |
1744 | ||
1745 | return (string_class_decl != NULL_TREE); | |
1746 | } | |
1747 | ||
1748 | static tree | |
1749 | next_runtime_abi_02_build_const_string_constructor (location_t loc, tree string, | |
1750 | int length) | |
1751 | { | |
1752 | tree constructor, fields, var; | |
9771b263 | 1753 | vec<constructor_elt, va_gc> *v = NULL; |
d764a8e6 | 1754 | |
c2beaa02 | 1755 | /* NeXT: (NSConstantString *) & ((__builtin_ObjCString) { isa, string, length }) */ |
d764a8e6 IS |
1756 | fields = TYPE_FIELDS (internal_const_str_type); |
1757 | CONSTRUCTOR_APPEND_ELT (v, fields, | |
1758 | build_unary_op (loc, ADDR_EXPR, string_class_decl, 0)); | |
1759 | ||
1760 | fields = DECL_CHAIN (fields); | |
1761 | CONSTRUCTOR_APPEND_ELT (v, fields, | |
1762 | build_unary_op (loc, ADDR_EXPR, string, 1)); | |
1763 | ||
1764 | /* ??? check if this should be long. */ | |
1765 | fields = DECL_CHAIN (fields); | |
1766 | CONSTRUCTOR_APPEND_ELT (v, fields, build_int_cst (NULL_TREE, length)); | |
1767 | constructor = objc_build_constructor (internal_const_str_type, v); | |
1768 | ||
1769 | var = build_decl (input_location, CONST_DECL, NULL, TREE_TYPE (constructor)); | |
1770 | DECL_INITIAL (var) = constructor; | |
1771 | TREE_STATIC (var) = 1; | |
1772 | DECL_CONTEXT (var) = NULL; | |
1773 | OBJCMETA (var, objc_meta, meta_const_str); | |
1774 | return var; | |
1775 | } | |
1776 | ||
1777 | /* NOTE --- NeXT V2 Metadata templates --- */ | |
1778 | ||
1779 | /* This routine builds the following type: | |
c2beaa02 NP |
1780 | struct _prop_t |
1781 | { | |
d764a8e6 | 1782 | const char * const name; // property name |
944fb799 | 1783 | const char * const attributes; // comma-delimited, encoded, |
d764a8e6 IS |
1784 | // property attributes |
1785 | }; | |
1786 | */ | |
1787 | ||
1788 | static tree | |
1789 | build_v2_property_template (void) | |
1790 | { | |
1791 | tree prop_record; | |
1792 | tree decls, *chain = NULL; | |
1793 | ||
1794 | prop_record = objc_start_struct (get_identifier ("_prop_t")); | |
1795 | /* const char * name */ | |
1796 | decls = add_field_decl (string_type_node, "name", &chain); | |
1797 | ||
1798 | /* const char * attribute */ | |
1799 | add_field_decl (string_type_node, "attribute", &chain); | |
1800 | ||
1801 | objc_finish_struct (prop_record, decls); | |
1802 | return prop_record; | |
1803 | } | |
1804 | ||
c2beaa02 NP |
1805 | /* struct ivar_t |
1806 | { | |
d764a8e6 IS |
1807 | unsigned long int *offset; |
1808 | char *name; | |
1809 | char *type; | |
1810 | uint32_t alignment; | |
1811 | uint32_t size; | |
1812 | }; | |
1813 | */ | |
1814 | ||
1815 | static tree | |
1816 | build_v2_ivar_t_template (void) | |
1817 | { | |
1818 | tree objc_ivar_id, objc_ivar_record; | |
1819 | tree decls, *chain = NULL; | |
1820 | ||
1821 | objc_ivar_id = get_identifier ("_ivar_t"); | |
1822 | objc_ivar_record = objc_start_struct (objc_ivar_id); | |
1823 | ||
c2beaa02 | 1824 | /* unsigned long int *offset; */ |
944fb799 | 1825 | decls = add_field_decl (build_pointer_type |
d764a8e6 IS |
1826 | (TREE_TYPE (size_zero_node)), "offset", &chain); |
1827 | ||
1828 | /* char *name; */ | |
1829 | add_field_decl (string_type_node, "name", &chain); | |
1830 | ||
1831 | /* char *type; */ | |
1832 | add_field_decl (string_type_node, "type", &chain); | |
1833 | ||
1834 | /* uint32_t alignment; */ | |
1835 | add_field_decl (integer_type_node, "alignment", &chain); | |
1836 | ||
1837 | /* uint32_t size; */ | |
1838 | add_field_decl (integer_type_node, "size", &chain); | |
1839 | ||
1840 | objc_finish_struct (objc_ivar_record, decls); | |
1841 | return objc_ivar_record; | |
1842 | } | |
1843 | ||
1844 | static void | |
1845 | build_metadata_templates (void) | |
1846 | { | |
1847 | ||
1848 | if (!objc_method_template) | |
1849 | objc_method_template = build_method_template (); | |
1850 | ||
1851 | if (!objc_v2_property_template) | |
944fb799 | 1852 | objc_v2_property_template = build_v2_property_template (); |
d764a8e6 IS |
1853 | |
1854 | if (!objc_v2_ivar_template) | |
1855 | objc_v2_ivar_template = build_v2_ivar_t_template (); | |
1856 | ||
1857 | } | |
1858 | ||
1859 | /* NOTE --- Output NeXT V2 Metadata --- */ | |
1860 | ||
1861 | /* Routine builds name of Interface's main meta-data of type class_t. */ | |
1862 | ||
1863 | static char * | |
1864 | objc_build_internal_classname (tree ident, bool metaclass) | |
1865 | { | |
1866 | static char string[512]; | |
944fb799 MS |
1867 | snprintf (string, 512, "%s_%s", metaclass ? "OBJC_METACLASS_$" |
1868 | : "OBJC_CLASS_$", | |
d764a8e6 IS |
1869 | IDENTIFIER_POINTER (ident)); |
1870 | return string; | |
1871 | } | |
1872 | ||
1873 | /* Build the name for object of type struct class_ro_t */ | |
1874 | ||
1875 | static const char * | |
1876 | newabi_append_ro (const char *name) | |
1877 | { | |
e6e9475b | 1878 | const char *dollar; |
d764a8e6 IS |
1879 | char *p; |
1880 | static char string[BUFSIZE]; | |
1881 | dollar = strchr (name, '$'); | |
1882 | gcc_assert (dollar); | |
1883 | p = string; | |
1884 | *p = '_'; p++; | |
1885 | strncpy (p, name, (int)(dollar - name)); | |
1886 | p += (int)(dollar - name); | |
1887 | sprintf (p, "RO_%s", dollar); | |
1888 | return string; | |
1889 | } | |
1890 | ||
944fb799 MS |
1891 | /* Build the struct message_ref_t msg = |
1892 | {objc_msgSend_fixup_xxx, @selector(func)} | |
c2beaa02 | 1893 | table. */ |
d764a8e6 | 1894 | |
944fb799 | 1895 | static |
d764a8e6 IS |
1896 | void build_v2_message_ref_translation_table (void) |
1897 | { | |
1898 | int count; | |
1899 | msgref_entry *ref; | |
1900 | ||
9771b263 | 1901 | if (!vec_safe_length (msgrefs)) |
d764a8e6 IS |
1902 | return; |
1903 | ||
9771b263 | 1904 | FOR_EACH_VEC_ELT (*msgrefs, count, ref) |
d764a8e6 | 1905 | { |
9771b263 | 1906 | vec<constructor_elt, va_gc> *initializer; |
d764a8e6 IS |
1907 | tree expr, constructor; |
1908 | tree struct_type = TREE_TYPE (ref->refdecl); | |
1909 | location_t loc = DECL_SOURCE_LOCATION (ref->refdecl); | |
1910 | ||
1911 | initializer = NULL; | |
c2beaa02 | 1912 | /* First 'IMP messenger' field... */ |
d764a8e6 IS |
1913 | expr = build_unary_op (loc, ADDR_EXPR, ref->func, 0); |
1914 | expr = convert (objc_v2_imp_type, expr); | |
1915 | CONSTRUCTOR_APPEND_ELT (initializer, NULL_TREE, expr); | |
1916 | ||
c2beaa02 | 1917 | /* ... then 'SEL name' field. */ |
d764a8e6 IS |
1918 | expr = build_selector (ref->selname); |
1919 | CONSTRUCTOR_APPEND_ELT (initializer, NULL_TREE, expr); | |
1920 | constructor = objc_build_constructor (struct_type, initializer); | |
944fb799 | 1921 | finish_var_decl (ref->refdecl, constructor); |
d764a8e6 IS |
1922 | } |
1923 | } | |
1924 | ||
c2beaa02 NP |
1925 | /* Build decl = initializer; for each externally visible class |
1926 | reference. */ | |
d764a8e6 IS |
1927 | |
1928 | static void | |
1929 | build_v2_classrefs_table (void) | |
1930 | { | |
1931 | int count; | |
1932 | ident_data_tuple *ref; | |
1933 | ||
9771b263 | 1934 | if (!vec_safe_length (classrefs)) |
d764a8e6 IS |
1935 | return; |
1936 | ||
9771b263 | 1937 | FOR_EACH_VEC_ELT (*classrefs, count, ref) |
d764a8e6 IS |
1938 | { |
1939 | tree expr = ref->ident; | |
1940 | tree decl = ref->data; | |
c2beaa02 NP |
1941 | /* Interface with no implementation and yet one of its messages |
1942 | has been used. Need to generate a full address-of tree for it | |
1943 | here. */ | |
d764a8e6 IS |
1944 | if (TREE_CODE (expr) == IDENTIFIER_NODE) |
1945 | { | |
1946 | const char *name = objc_build_internal_classname (expr, false); | |
1947 | expr = create_extern_decl (objc_v2_class_template, name); | |
1948 | expr = convert (objc_class_type, build_fold_addr_expr (expr)); | |
1949 | } | |
1950 | /* The runtime wants this, even if it appears unused, so we must force the | |
944fb799 | 1951 | output. |
d764a8e6 IS |
1952 | DECL_PRESERVE_P (decl) = 1; */ |
1953 | finish_var_decl (decl, expr); | |
1954 | } | |
1955 | } | |
1956 | ||
c2beaa02 NP |
1957 | /* Build decl = initializer; for each externally visible super class |
1958 | reference. */ | |
d764a8e6 IS |
1959 | |
1960 | static void | |
1961 | build_v2_super_classrefs_table (bool metaclass) | |
1962 | { | |
1963 | int count; | |
1964 | ident_data_tuple *ref; | |
9771b263 | 1965 | vec<ident_data_tuple, va_gc> *list = metaclass ? metaclass_super_refs |
d764a8e6 IS |
1966 | : class_super_refs; |
1967 | ||
9771b263 | 1968 | if (!vec_safe_length (list)) |
d764a8e6 IS |
1969 | return; |
1970 | ||
9771b263 | 1971 | FOR_EACH_VEC_ELT (*list, count, ref) |
d764a8e6 IS |
1972 | { |
1973 | tree expr = ref->ident; | |
1974 | tree decl = ref->data; | |
c2beaa02 NP |
1975 | /* Interface with no implementation and yet one of its messages |
1976 | has been used. Need to generate a full address-of tree for it | |
1977 | here. */ | |
d764a8e6 IS |
1978 | if (TREE_CODE (expr) == IDENTIFIER_NODE) |
1979 | { | |
1980 | const char * name = objc_build_internal_classname (expr, metaclass); | |
1981 | expr = create_extern_decl (objc_v2_class_template, name); | |
1982 | expr = convert (objc_class_type, build_fold_addr_expr (expr)); | |
1983 | } | |
1984 | finish_var_decl (decl, expr); | |
1985 | } | |
1986 | } | |
1987 | ||
c2beaa02 NP |
1988 | /* Add the global class meta-data declaration to the list which later |
1989 | on ends up in the __class_list section. */ | |
d764a8e6 | 1990 | |
9771b263 | 1991 | static GTY(()) vec<tree, va_gc> *class_list; |
d764a8e6 | 1992 | |
944fb799 | 1993 | static void |
d764a8e6 IS |
1994 | objc_v2_add_to_class_list (tree global_class_decl) |
1995 | { | |
9771b263 | 1996 | vec_safe_push (class_list, global_class_decl); |
d764a8e6 IS |
1997 | } |
1998 | ||
9771b263 | 1999 | static GTY(()) vec<tree, va_gc> *nonlazy_class_list; |
d764a8e6 | 2000 | |
c2beaa02 NP |
2001 | /* Add the global class meta-data declaration to the list which later |
2002 | on ends up in the __nonlazy_class section. */ | |
d764a8e6 | 2003 | |
944fb799 | 2004 | static void |
d764a8e6 IS |
2005 | objc_v2_add_to_nonlazy_class_list (tree global_class_decl) |
2006 | { | |
9771b263 | 2007 | vec_safe_push (nonlazy_class_list, global_class_decl); |
d764a8e6 IS |
2008 | } |
2009 | ||
9771b263 | 2010 | static GTY(()) vec<tree, va_gc> *category_list; |
d764a8e6 | 2011 | |
c2beaa02 NP |
2012 | /* Add the category meta-data declaration to the list which later on |
2013 | ends up in the __nonlazy_category section. */ | |
d764a8e6 | 2014 | |
944fb799 | 2015 | static void |
d764a8e6 IS |
2016 | objc_v2_add_to_category_list (tree decl) |
2017 | { | |
9771b263 | 2018 | vec_safe_push (category_list, decl); |
d764a8e6 IS |
2019 | } |
2020 | ||
9771b263 | 2021 | static GTY(()) vec<tree, va_gc> *nonlazy_category_list; |
d764a8e6 | 2022 | |
c2beaa02 NP |
2023 | /* Add the category meta-data declaration to the list which later on |
2024 | ends up in the __category_list section. */ | |
d764a8e6 | 2025 | |
944fb799 | 2026 | static void |
d764a8e6 IS |
2027 | objc_v2_add_to_nonlazy_category_list (tree decl) |
2028 | { | |
9771b263 | 2029 | vec_safe_push (nonlazy_category_list, decl); |
d764a8e6 IS |
2030 | } |
2031 | ||
2032 | static bool | |
2033 | has_load_impl (tree clsmeth) | |
2034 | { | |
2035 | while (clsmeth) | |
2036 | { | |
2037 | tree id = METHOD_SEL_NAME (clsmeth); | |
2038 | if (IDENTIFIER_LENGTH (id) == 4 | |
2039 | && strncmp (IDENTIFIER_POINTER (id), "load", 4) == 0) | |
2040 | return true; | |
2041 | clsmeth = DECL_CHAIN (clsmeth); | |
2042 | } | |
2043 | ||
2044 | return false; | |
2045 | } | |
2046 | ||
c2beaa02 NP |
2047 | /* Build a __{class,category}_list section table containing address of |
2048 | all @implemented {class,category} meta-data. */ | |
d764a8e6 IS |
2049 | |
2050 | static void | |
9771b263 | 2051 | build_v2_address_table (vec<tree, va_gc> *src, const char *nam, tree attr) |
d764a8e6 IS |
2052 | { |
2053 | int count=0; | |
2054 | tree type, decl, expr; | |
9771b263 | 2055 | vec<constructor_elt, va_gc> *initlist = NULL; |
d764a8e6 | 2056 | |
9771b263 | 2057 | if (!vec_safe_length (src)) |
d764a8e6 IS |
2058 | return; |
2059 | ||
9771b263 | 2060 | FOR_EACH_VEC_ELT (*src, count, decl) |
d764a8e6 IS |
2061 | { |
2062 | #ifndef OBJCPLUS | |
2063 | tree purpose = build_int_cst (NULL_TREE, count); | |
2064 | #else | |
2065 | tree purpose = NULL_TREE; | |
2066 | #endif | |
2067 | expr = convert (objc_class_type, build_fold_addr_expr (decl)); | |
2068 | CONSTRUCTOR_APPEND_ELT (initlist, purpose, expr); | |
2069 | } | |
2070 | gcc_assert (count > 0); | |
944fb799 | 2071 | type = build_array_type (objc_class_type, |
d764a8e6 IS |
2072 | build_index_type (build_int_cst (NULL_TREE, count - 1))); |
2073 | decl = start_var_decl (type, nam); | |
c2beaa02 NP |
2074 | /* The runtime wants this, even if it appears unused, so we must |
2075 | force the output. */ | |
d764a8e6 IS |
2076 | DECL_PRESERVE_P (decl) = 1; |
2077 | expr = objc_build_constructor (type, initlist); | |
2078 | OBJCMETA (decl, objc_meta, attr); | |
2079 | finish_var_decl (decl, expr); | |
2080 | } | |
2081 | ||
c2beaa02 NP |
2082 | /* Build decl = initializer; for each protocol referenced in |
2083 | @protocol(MyProt) expression. Refs as built in the entry section | |
2084 | above. */ | |
d764a8e6 IS |
2085 | |
2086 | static void | |
2087 | build_v2_protocol_list_translation_table (void) | |
2088 | { | |
2089 | int count; | |
2090 | prot_list_entry *ref; | |
944fb799 | 2091 | |
d764a8e6 IS |
2092 | if (!protrefs) |
2093 | return; | |
2094 | ||
9771b263 | 2095 | FOR_EACH_VEC_ELT (*protrefs, count, ref) |
d764a8e6 IS |
2096 | { |
2097 | char buf[BUFSIZE]; | |
2098 | tree expr; | |
2099 | gcc_assert (TREE_CODE (ref->id) == PROTOCOL_INTERFACE_TYPE); | |
944fb799 | 2100 | snprintf (buf, BUFSIZE, "_OBJC_Protocol_%s", |
d764a8e6 IS |
2101 | IDENTIFIER_POINTER (PROTOCOL_NAME (ref->id))); |
2102 | expr = start_var_decl (objc_v2_protocol_template, buf); | |
2103 | expr = convert (objc_protocol_type, build_fold_addr_expr (expr)); | |
2104 | finish_var_decl (ref->refdecl, expr); | |
2105 | } | |
2106 | /* TODO: Maybe we could explicitly delete the vec. now? */ | |
2107 | } | |
2108 | ||
9771b263 | 2109 | static GTY (()) vec<prot_list_entry, va_gc> *protlist; |
d764a8e6 | 2110 | |
c2beaa02 NP |
2111 | /* Add the local protocol meta-data declaration to the list which |
2112 | later on ends up in the __protocol_list section. */ | |
d764a8e6 IS |
2113 | |
2114 | static void | |
2115 | objc_add_to_protocol_list (tree protocol_interface_decl, tree protocol_decl) | |
2116 | { | |
2117 | prot_list_entry e; | |
2118 | if (!protlist) | |
2119 | /* Arbitrary init count. */ | |
9771b263 | 2120 | vec_alloc (protlist, 32); |
d764a8e6 IS |
2121 | e.id = protocol_interface_decl; |
2122 | e.refdecl = protocol_decl; | |
9771b263 | 2123 | vec_safe_push (protlist, e); |
d764a8e6 IS |
2124 | } |
2125 | ||
c2beaa02 NP |
2126 | /* Build the __protocol_list section table containing address of all |
2127 | generate protocol_t meta-data. */ | |
d764a8e6 IS |
2128 | |
2129 | static void | |
2130 | build_v2_protocol_list_address_table (void) | |
2131 | { | |
2132 | int count; | |
2133 | prot_list_entry *ref; | |
9771b263 | 2134 | if (!vec_safe_length (protlist)) |
d764a8e6 IS |
2135 | return; |
2136 | ||
9771b263 | 2137 | FOR_EACH_VEC_ELT (*protlist, count, ref) |
d764a8e6 IS |
2138 | { |
2139 | tree decl, expr; | |
2140 | char buf[BUFSIZE]; | |
2141 | gcc_assert (ref->id && TREE_CODE (ref->id) == PROTOCOL_INTERFACE_TYPE); | |
2142 | snprintf (buf, BUFSIZE, "_OBJC_LabelProtocol_%s", | |
2143 | IDENTIFIER_POINTER (PROTOCOL_NAME (ref->id))); | |
2144 | decl = create_global_decl (objc_protocol_type, buf); | |
2145 | expr = convert (objc_protocol_type, build_fold_addr_expr (ref->refdecl)); | |
2146 | OBJCMETA (decl, objc_meta, meta_label_protocollist); | |
2147 | finish_var_decl (decl, expr); | |
2148 | } | |
2149 | ||
2150 | /* TODO: delete the vec. */ | |
dd5a833e | 2151 | /* TODO: upgrade to the clang/llvm hidden version. */ |
d764a8e6 IS |
2152 | } |
2153 | ||
c2beaa02 NP |
2154 | /* This routine declares a variable to hold meta data for 'struct |
2155 | protocol_list_t'. */ | |
d764a8e6 IS |
2156 | |
2157 | static tree | |
2158 | generate_v2_protocol_list (tree i_or_p, tree klass_ctxt) | |
2159 | { | |
2160 | tree refs_decl, lproto, e, plist, ptempl_p_t; | |
2161 | int size = 0; | |
9771b263 | 2162 | vec<constructor_elt, va_gc> *initlist = NULL; |
d764a8e6 IS |
2163 | char buf[BUFSIZE]; |
2164 | ||
2165 | if (TREE_CODE (i_or_p) == CLASS_INTERFACE_TYPE | |
2166 | || TREE_CODE (i_or_p) == CATEGORY_INTERFACE_TYPE) | |
2167 | plist = CLASS_PROTOCOL_LIST (i_or_p); | |
2168 | else if (TREE_CODE (i_or_p) == PROTOCOL_INTERFACE_TYPE) | |
2169 | plist = PROTOCOL_LIST (i_or_p); | |
2170 | else | |
2171 | gcc_unreachable (); | |
2172 | ||
2173 | /* Compute size. */ | |
2174 | for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto)) | |
2175 | if (TREE_CODE (TREE_VALUE (lproto)) == PROTOCOL_INTERFACE_TYPE | |
2176 | && PROTOCOL_FORWARD_DECL (TREE_VALUE (lproto))) | |
2177 | size++; | |
2178 | ||
2179 | /* Build initializer. */ | |
2180 | ||
2181 | ptempl_p_t = build_pointer_type (objc_v2_protocol_template); | |
2182 | e = build_int_cst (ptempl_p_t, size); | |
2183 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, e); | |
2184 | ||
2185 | for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto)) | |
2186 | { | |
2187 | tree pval = TREE_VALUE (lproto); | |
2188 | ||
2189 | if (TREE_CODE (pval) == PROTOCOL_INTERFACE_TYPE | |
2190 | && PROTOCOL_FORWARD_DECL (pval)) | |
2191 | { | |
2192 | tree fwref = PROTOCOL_FORWARD_DECL (pval); | |
2193 | location_t loc = DECL_SOURCE_LOCATION (fwref) ; | |
2194 | e = build_unary_op (loc, ADDR_EXPR, fwref, 0); | |
2195 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, e); | |
2196 | } | |
2197 | } | |
2198 | ||
2199 | /* static struct protocol_list_t *list[size]; */ | |
2200 | ||
2201 | switch (TREE_CODE (i_or_p)) | |
2202 | { | |
2203 | case PROTOCOL_INTERFACE_TYPE: | |
944fb799 | 2204 | snprintf (buf, BUFSIZE, "_OBJC_ProtocolRefs_%s", |
d764a8e6 IS |
2205 | IDENTIFIER_POINTER (PROTOCOL_NAME (i_or_p))); |
2206 | break; | |
2207 | case CLASS_INTERFACE_TYPE: | |
944fb799 | 2208 | snprintf (buf, BUFSIZE, "_OBJC_ClassProtocols_%s", |
d764a8e6 IS |
2209 | IDENTIFIER_POINTER (CLASS_NAME (i_or_p))); |
2210 | break; | |
2211 | case CATEGORY_INTERFACE_TYPE: | |
944fb799 | 2212 | snprintf (buf, BUFSIZE, "_OBJC_CategoryProtocols_%s_%s", |
d764a8e6 IS |
2213 | IDENTIFIER_POINTER (CLASS_NAME (klass_ctxt)), |
2214 | IDENTIFIER_POINTER (CLASS_SUPER_NAME (klass_ctxt))); | |
2215 | break; | |
2216 | default: | |
2217 | gcc_unreachable (); | |
2218 | } | |
2219 | ||
2220 | refs_decl = start_var_decl (build_sized_array_type (ptempl_p_t, size+1), | |
2221 | buf); | |
2222 | /* ObjC2 puts all these in the base section. */ | |
2223 | OBJCMETA (refs_decl, objc_meta, meta_base); | |
2224 | DECL_PRESERVE_P (refs_decl) = 1; | |
944fb799 | 2225 | finish_var_decl (refs_decl, |
d764a8e6 IS |
2226 | objc_build_constructor (TREE_TYPE (refs_decl),initlist)); |
2227 | return refs_decl; | |
2228 | } | |
2229 | ||
c2beaa02 NP |
2230 | /* This routine builds one 'struct method_t' initializer list. Note |
2231 | that the old ABI is supposed to build 'struct objc_method' which | |
2232 | has 3 fields, but it does not build the initialization expression | |
2233 | for 'method_imp' which for protocols is NULL any way. To be | |
587ae1e3 | 2234 | consistent with declaration of 'struct method_t', in the new ABI we |
c2beaa02 | 2235 | set the method_t.imp to NULL. */ |
d764a8e6 IS |
2236 | |
2237 | static tree | |
2238 | build_v2_descriptor_table_initializer (tree type, tree entries) | |
2239 | { | |
9771b263 | 2240 | vec<constructor_elt, va_gc> *initlist = NULL; |
d764a8e6 IS |
2241 | do |
2242 | { | |
9771b263 | 2243 | vec<constructor_elt, va_gc> *eltlist = NULL; |
944fb799 | 2244 | CONSTRUCTOR_APPEND_ELT (eltlist, NULL_TREE, |
d764a8e6 | 2245 | build_selector (METHOD_SEL_NAME (entries))); |
944fb799 | 2246 | CONSTRUCTOR_APPEND_ELT (eltlist, NULL_TREE, |
d764a8e6 IS |
2247 | add_objc_string (METHOD_ENCODING (entries), |
2248 | meth_var_types)); | |
2249 | CONSTRUCTOR_APPEND_ELT (eltlist, NULL_TREE, null_pointer_node); | |
2250 | ||
944fb799 | 2251 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, |
d764a8e6 IS |
2252 | objc_build_constructor (type, eltlist)); |
2253 | entries = TREE_CHAIN (entries); | |
2254 | } | |
2255 | while (entries); | |
2256 | ||
2257 | return objc_build_constructor (build_array_type (type, 0), initlist); | |
2258 | } | |
2259 | ||
c2beaa02 NP |
2260 | /* struct method_list_t |
2261 | { | |
d764a8e6 IS |
2262 | uint32_t entsize; |
2263 | uint32_t method_count; | |
2264 | struct objc_method method_list[method_count]; | |
c2beaa02 | 2265 | }; */ |
d764a8e6 IS |
2266 | |
2267 | static tree | |
2268 | build_v2_method_list_template (tree list_type, int size) | |
2269 | { | |
2270 | tree method_list_t_record; | |
2271 | tree array_type, decls, *chain = NULL; | |
2272 | ||
2273 | method_list_t_record = objc_start_struct (NULL_TREE); | |
944fb799 | 2274 | |
c2beaa02 | 2275 | /* uint32_t const entsize; */ |
d764a8e6 IS |
2276 | decls = add_field_decl (integer_type_node, "entsize", &chain); |
2277 | ||
2278 | /* int method_count; */ | |
2279 | add_field_decl (integer_type_node, "method_count", &chain); | |
2280 | ||
2281 | /* struct objc_method method_list[]; */ | |
2282 | array_type = build_sized_array_type (list_type, size); | |
2283 | add_field_decl (array_type, "method_list", &chain); | |
2284 | ||
2285 | objc_finish_struct (method_list_t_record, decls); | |
2286 | return method_list_t_record; | |
2287 | } | |
2288 | ||
c2beaa02 NP |
2289 | /* Note, as above that we are building to the objc_method_template |
2290 | which has the *imp field. ABI0/1 build with | |
2291 | objc_method_prototype_template which is missing this field. */ | |
944fb799 | 2292 | static tree |
d764a8e6 IS |
2293 | generate_v2_meth_descriptor_table (tree chain, tree protocol, |
2294 | const char *prefix, tree attr) | |
2295 | { | |
2296 | tree method_list_template, initlist, decl, methods; | |
2297 | int size, entsize; | |
9771b263 | 2298 | vec<constructor_elt, va_gc> *v = NULL; |
d764a8e6 IS |
2299 | char buf[BUFSIZE]; |
2300 | ||
2301 | if (!chain || !prefix) | |
2302 | return NULL_TREE; | |
2303 | ||
2304 | methods = chain; | |
2305 | size = 0; | |
2306 | while (methods) | |
2307 | { | |
2308 | if (! METHOD_ENCODING (methods)) | |
2309 | METHOD_ENCODING (methods) = encode_method_prototype (methods); | |
2310 | methods = TREE_CHAIN (methods); | |
2311 | size++; | |
2312 | } | |
2313 | ||
2314 | gcc_assert (size); | |
2315 | method_list_template = build_v2_method_list_template (objc_method_template, | |
2316 | size); | |
944fb799 | 2317 | snprintf (buf, BUFSIZE, "%s_%s", prefix, |
d764a8e6 IS |
2318 | IDENTIFIER_POINTER (PROTOCOL_NAME (protocol))); |
2319 | ||
2320 | decl = start_var_decl (method_list_template, buf); | |
2321 | ||
2322 | entsize = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_method_template)); | |
2323 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, entsize)); | |
2324 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, size)); | |
944fb799 | 2325 | initlist = |
d764a8e6 IS |
2326 | build_v2_descriptor_table_initializer (objc_method_template, |
2327 | chain); | |
2328 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, initlist); | |
2329 | /* Get into the right section. */ | |
2330 | OBJCMETA (decl, objc_meta, attr); | |
2331 | finish_var_decl (decl, objc_build_constructor (method_list_template, v)); | |
2332 | return decl; | |
2333 | } | |
2334 | ||
c2beaa02 NP |
2335 | /* This routine builds the initializer list to initialize the 'struct |
2336 | _prop_t prop_list[]' field of 'struct _prop_list_t' meta-data. */ | |
d764a8e6 IS |
2337 | |
2338 | static tree | |
2339 | build_v2_property_table_initializer (tree type, tree context) | |
2340 | { | |
2341 | tree x; | |
9771b263 | 2342 | vec<constructor_elt, va_gc> *inits = NULL; |
d764a8e6 IS |
2343 | if (TREE_CODE (context) == PROTOCOL_INTERFACE_TYPE) |
2344 | x = CLASS_PROPERTY_DECL (context); | |
2345 | else | |
2346 | x = IMPL_PROPERTY_DECL (context); | |
2347 | ||
2348 | for (; x; x = TREE_CHAIN (x)) | |
2349 | { | |
9771b263 | 2350 | vec<constructor_elt, va_gc> *elemlist = NULL; |
c2beaa02 NP |
2351 | /* NOTE! sections where property name/attribute go MUST change |
2352 | later. */ | |
d764a8e6 IS |
2353 | tree attribute, name_ident = PROPERTY_NAME (x); |
2354 | ||
944fb799 | 2355 | CONSTRUCTOR_APPEND_ELT (elemlist, NULL_TREE, |
d764a8e6 IS |
2356 | add_objc_string (name_ident, prop_names_attr)); |
2357 | ||
2358 | attribute = objc_v2_encode_prop_attr (x); | |
944fb799 | 2359 | CONSTRUCTOR_APPEND_ELT (elemlist, NULL_TREE, |
d764a8e6 IS |
2360 | add_objc_string (attribute, prop_names_attr)); |
2361 | ||
2362 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, | |
2363 | objc_build_constructor (type, elemlist)); | |
2364 | } | |
2365 | ||
2366 | return objc_build_constructor (build_array_type (type, 0),inits); | |
2367 | } | |
2368 | ||
2369 | /* This routine builds the following type: | |
c2beaa02 NP |
2370 | struct _prop_list_t |
2371 | { | |
d764a8e6 IS |
2372 | uint32_t entsize; // sizeof (struct _prop_t) |
2373 | uint32_t prop_count; | |
2374 | struct _prop_t prop_list [prop_count]; | |
2375 | } | |
2376 | */ | |
2377 | ||
2378 | static tree | |
2379 | build_v2_property_list_template (tree list_type, int size) | |
2380 | { | |
2381 | tree property_list_t_record; | |
2382 | tree array_type, decls, *chain = NULL; | |
2383 | ||
2384 | /* anonymous. */ | |
2385 | property_list_t_record = objc_start_struct (NULL_TREE); | |
944fb799 | 2386 | |
c2beaa02 | 2387 | /* uint32_t const entsize; */ |
d764a8e6 IS |
2388 | decls = add_field_decl (integer_type_node, "entsize", &chain); |
2389 | ||
c2beaa02 | 2390 | /* int prop_count; */ |
d764a8e6 IS |
2391 | add_field_decl (integer_type_node, "prop_count", &chain); |
2392 | ||
2393 | /* struct _prop_t prop_list[]; */ | |
2394 | array_type = build_sized_array_type (list_type, size); | |
2395 | add_field_decl (array_type, "prop_list", &chain); | |
2396 | ||
2397 | objc_finish_struct (property_list_t_record, decls); | |
2398 | return property_list_t_record; | |
2399 | } | |
2400 | ||
c2beaa02 NP |
2401 | /* Top-level routine to generate property tables for each |
2402 | implementation. */ | |
d764a8e6 IS |
2403 | |
2404 | static tree | |
2405 | generate_v2_property_table (tree context, tree klass_ctxt) | |
2406 | { | |
2407 | tree x, decl, initlist, property_list_template; | |
2408 | bool is_proto = false; | |
9771b263 | 2409 | vec<constructor_elt, va_gc> *inits = NULL; |
d764a8e6 IS |
2410 | int init_val, size = 0; |
2411 | char buf[BUFSIZE]; | |
2412 | ||
2413 | if (context) | |
2414 | { | |
2415 | gcc_assert (TREE_CODE (context) == PROTOCOL_INTERFACE_TYPE); | |
2416 | x = CLASS_PROPERTY_DECL (context); | |
2417 | is_proto = true; | |
2418 | } | |
2419 | else | |
2420 | x = IMPL_PROPERTY_DECL (klass_ctxt); | |
2421 | ||
2422 | for (; x; x = TREE_CHAIN (x)) | |
2423 | size++; | |
2424 | ||
2425 | if (size == 0) | |
2426 | return NULL_TREE; | |
2427 | ||
944fb799 MS |
2428 | property_list_template = |
2429 | build_v2_property_list_template (objc_v2_property_template, | |
d764a8e6 IS |
2430 | size); |
2431 | ||
2432 | initlist = build_v2_property_table_initializer (objc_v2_property_template, | |
2433 | is_proto ? context | |
2434 | : klass_ctxt); | |
2435 | ||
2436 | init_val = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_property_template)); | |
2437 | if (is_proto) | |
2438 | snprintf (buf, BUFSIZE, "_OBJC_ProtocolPropList_%s", | |
2439 | IDENTIFIER_POINTER (PROTOCOL_NAME (context))); | |
2440 | else | |
2441 | snprintf (buf, BUFSIZE, "_OBJC_ClassPropList_%s", | |
2442 | IDENTIFIER_POINTER (CLASS_NAME (klass_ctxt))); | |
2443 | ||
2444 | decl = start_var_decl (property_list_template, buf); | |
2445 | ||
944fb799 | 2446 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, |
d764a8e6 | 2447 | build_int_cst (NULL_TREE, init_val)); |
944fb799 | 2448 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, |
d764a8e6 IS |
2449 | build_int_cst (NULL_TREE, size)); |
2450 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, initlist); | |
2451 | ||
2452 | OBJCMETA (decl, objc_meta, meta_base); | |
2453 | finish_var_decl (decl, objc_build_constructor (TREE_TYPE (decl), inits)); | |
2454 | return decl; | |
2455 | } | |
2456 | ||
2457 | static tree | |
2458 | build_v2_protocol_initializer (tree type, tree protocol_name, tree protocol_list, | |
944fb799 | 2459 | tree inst_methods, tree class_methods, |
d764a8e6 IS |
2460 | tree opt_ins_meth, tree opt_cls_meth, |
2461 | tree property_list) | |
2462 | { | |
2463 | tree expr, ttyp; | |
2464 | location_t loc; | |
9771b263 | 2465 | vec<constructor_elt, va_gc> *inits = NULL; |
d764a8e6 IS |
2466 | |
2467 | /* TODO: find a better representation of location from the inputs. */ | |
2468 | loc = UNKNOWN_LOCATION; | |
2469 | ||
2470 | /* This is NULL for the new ABI. */ | |
944fb799 | 2471 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, |
d764a8e6 IS |
2472 | convert (objc_object_type, null_pointer_node)); |
2473 | ||
2474 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, protocol_name); | |
2475 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, protocol_list); | |
2476 | ||
2477 | ttyp = objc_method_proto_list_ptr; | |
2478 | if (inst_methods) | |
2479 | expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, inst_methods, 0)); | |
2480 | else | |
2481 | expr = convert (ttyp, null_pointer_node); | |
2482 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr); | |
2483 | ||
2484 | if (class_methods) | |
2485 | expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, class_methods, 0)); | |
2486 | else | |
2487 | expr = convert (ttyp, null_pointer_node); | |
2488 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr); | |
2489 | ||
2490 | if (opt_ins_meth) | |
2491 | expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, opt_ins_meth, 0)); | |
2492 | else | |
2493 | expr = convert (ttyp, null_pointer_node); | |
2494 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr); | |
2495 | ||
2496 | if (opt_cls_meth) | |
2497 | expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, opt_cls_meth, 0)); | |
2498 | else | |
2499 | expr = convert (ttyp, null_pointer_node); | |
2500 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr); | |
2501 | ||
2502 | ttyp = objc_prop_list_ptr; | |
2503 | if (property_list) | |
2504 | expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, property_list, 0)); | |
2505 | else | |
2506 | expr = convert (ttyp, null_pointer_node); | |
2507 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr); | |
2508 | ||
2509 | /* const uint32_t size; = sizeof(struct protocol_t) */ | |
944fb799 | 2510 | expr = build_int_cst (integer_type_node, |
d764a8e6 IS |
2511 | TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_protocol_template))); |
2512 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr); | |
2513 | /* const uint32_t flags; = 0 */ | |
2514 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, integer_zero_node); | |
2515 | ||
2516 | return objc_build_constructor (type, inits); | |
2517 | } | |
2518 | ||
c2beaa02 NP |
2519 | /* Main routine to build all meta data for all protocols used in a |
2520 | translation unit. */ | |
d764a8e6 IS |
2521 | |
2522 | static void | |
2523 | generate_v2_protocols (void) | |
2524 | { | |
2525 | tree p ; | |
2526 | bool some = false; | |
2527 | ||
2528 | if (!protocol_chain) | |
2529 | return ; | |
2530 | ||
c2beaa02 NP |
2531 | /* If a protocol was directly referenced, pull in indirect |
2532 | references. */ | |
d764a8e6 IS |
2533 | for (p = protocol_chain; p; p = TREE_CHAIN (p)) |
2534 | if (PROTOCOL_FORWARD_DECL (p) && PROTOCOL_LIST (p)) | |
2535 | generate_protocol_references (PROTOCOL_LIST (p)); | |
2536 | ||
2537 | for (p = protocol_chain; p; p = TREE_CHAIN (p)) | |
2538 | { | |
2539 | location_t loc; | |
2540 | tree inst_meth, class_meth, opt_inst_meth, opt_class_meth, props; | |
2541 | tree decl, initlist, protocol_name_expr, refs_decl, refs_expr; | |
2542 | ||
2543 | /* If protocol wasn't referenced, don't generate any code. */ | |
2544 | decl = PROTOCOL_FORWARD_DECL (p); | |
2545 | ||
2546 | if (!decl) | |
2547 | continue; | |
2548 | ||
2549 | loc = DECL_SOURCE_LOCATION (decl); | |
2550 | some = true; | |
2551 | ||
944fb799 | 2552 | inst_meth = |
d764a8e6 IS |
2553 | generate_v2_meth_descriptor_table (PROTOCOL_NST_METHODS (p), p, |
2554 | "_OBJC_ProtocolInstanceMethods", | |
2555 | meta_proto_nst_meth); | |
2556 | ||
944fb799 | 2557 | class_meth = |
d764a8e6 IS |
2558 | generate_v2_meth_descriptor_table (PROTOCOL_CLS_METHODS (p), p, |
2559 | "_OBJC_ProtocolClassMethods", | |
2560 | meta_proto_cls_meth); | |
2561 | ||
2562 | opt_inst_meth = | |
2563 | generate_v2_meth_descriptor_table (PROTOCOL_OPTIONAL_NST_METHODS (p), p, | |
2564 | "_OBJC_OptProtocolInstMethods", | |
2565 | meta_proto_nst_meth); | |
2566 | ||
944fb799 | 2567 | opt_class_meth = |
d764a8e6 IS |
2568 | generate_v2_meth_descriptor_table (PROTOCOL_OPTIONAL_CLS_METHODS (p), p, |
2569 | "_OBJC_OptProtocolClassMethods", | |
2570 | meta_proto_cls_meth); | |
2571 | ||
2572 | if (PROTOCOL_LIST (p)) | |
2573 | refs_decl = generate_v2_protocol_list (p, NULL_TREE); | |
2574 | else | |
2575 | refs_decl = 0; | |
2576 | ||
2577 | /* static struct objc_protocol _OBJC_Protocol_<mumble>; */ | |
2578 | protocol_name_expr = add_objc_string (PROTOCOL_NAME (p), class_names); | |
2579 | ||
2580 | if (refs_decl) | |
2581 | refs_expr = convert (build_pointer_type (objc_v2_protocol_template), | |
2582 | build_unary_op (loc, ADDR_EXPR, refs_decl, 0)); | |
2583 | else | |
2584 | refs_expr = build_int_cst (NULL_TREE, 0); | |
2585 | ||
2586 | props = generate_v2_property_table (p, NULL_TREE); | |
2587 | ||
2588 | initlist = build_v2_protocol_initializer (TREE_TYPE (decl), | |
2589 | protocol_name_expr, refs_expr, | |
2590 | inst_meth, class_meth, | |
2591 | opt_inst_meth, opt_class_meth, | |
2592 | props); | |
2593 | finish_var_decl (decl, initlist); | |
2594 | objc_add_to_protocol_list (p, decl); | |
2595 | } | |
2596 | ||
2597 | if (some) | |
2598 | { | |
c2beaa02 NP |
2599 | /* Make sure we get the Protocol class linked in - reference |
2600 | it... */ | |
d764a8e6 | 2601 | p = objc_v2_get_class_reference (get_identifier (PROTOCOL_OBJECT_CLASS_NAME)); |
c2beaa02 NP |
2602 | /* ... but since we don't specifically use the reference... we |
2603 | need to force it. */ | |
d764a8e6 IS |
2604 | DECL_PRESERVE_P (p) = 1; |
2605 | } | |
2606 | } | |
2607 | ||
2608 | static tree | |
2609 | generate_v2_dispatch_table (tree chain, const char *name, tree attr) | |
2610 | { | |
2611 | tree decl, method_list_template, initlist; | |
9771b263 | 2612 | vec<constructor_elt, va_gc> *v = NULL; |
d764a8e6 IS |
2613 | int size, init_val; |
2614 | ||
2615 | if (!chain || !name || !(size = list_length (chain))) | |
2616 | return NULL_TREE; | |
2617 | ||
2618 | method_list_template | |
2619 | = build_v2_method_list_template (objc_method_template, size); | |
2620 | initlist | |
2621 | = build_dispatch_table_initializer (objc_method_template, chain); | |
2622 | ||
2623 | decl = start_var_decl (method_list_template, name); | |
2624 | ||
2625 | init_val = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_method_template)); | |
944fb799 | 2626 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
d764a8e6 | 2627 | build_int_cst (integer_type_node, init_val)); |
944fb799 | 2628 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, |
d764a8e6 IS |
2629 | build_int_cst (integer_type_node, size)); |
2630 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, initlist); | |
2631 | ||
2632 | OBJCMETA (decl, objc_meta, attr); | |
2633 | finish_var_decl (decl, | |
2634 | objc_build_constructor (TREE_TYPE (decl), v)); | |
2635 | return decl; | |
2636 | } | |
2637 | ||
2638 | /* Init a category. */ | |
2639 | static tree | |
2640 | build_v2_category_initializer (tree type, tree cat_name, tree class_name, | |
2641 | tree inst_methods, tree class_methods, | |
2642 | tree protocol_list, tree property_list, | |
2643 | location_t loc) | |
2644 | { | |
2645 | tree expr, ltyp; | |
9771b263 | 2646 | vec<constructor_elt, va_gc> *v = NULL; |
d764a8e6 IS |
2647 | |
2648 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, cat_name); | |
2649 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, class_name); | |
2650 | ||
2651 | ltyp = objc_method_list_ptr; | |
2652 | if (inst_methods) | |
2653 | expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, inst_methods, 0)); | |
2654 | else | |
2655 | expr = convert (ltyp, null_pointer_node); | |
2656 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr); | |
2657 | ||
2658 | if (class_methods) | |
2659 | expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, class_methods, 0)); | |
2660 | else | |
2661 | expr = convert (ltyp, null_pointer_node); | |
2662 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr); | |
2663 | ||
2664 | /* protocol_list = */ | |
2665 | ltyp = build_pointer_type (objc_v2_protocol_template); | |
2666 | if (protocol_list) | |
2667 | expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, protocol_list, 0)); | |
2668 | else | |
2669 | expr = convert (ltyp, null_pointer_node); | |
2670 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr); | |
2671 | ||
2672 | ltyp = objc_prop_list_ptr; | |
2673 | if (property_list) | |
2674 | expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, property_list, 0)); | |
2675 | else | |
2676 | expr = convert (ltyp, null_pointer_node); | |
2677 | CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr); | |
2678 | ||
2679 | return objc_build_constructor (type, v); | |
2680 | } | |
2681 | ||
c2beaa02 | 2682 | /* static struct category_t _OBJC_CATEGORY_$_<name> = { ... }; */ |
d764a8e6 IS |
2683 | |
2684 | static void | |
2685 | generate_v2_category (struct imp_entry *impent) | |
2686 | { | |
2687 | tree initlist, cat_name_expr, class_name_expr; | |
2688 | tree protocol_decl, category, props, t; | |
2689 | tree inst_methods = NULL_TREE, class_methods = NULL_TREE; | |
2690 | tree cat = impent->imp_context; | |
2691 | tree cat_decl = impent->class_decl; | |
2692 | location_t loc; | |
2693 | char buf[BUFSIZE]; | |
944fb799 | 2694 | |
d764a8e6 IS |
2695 | loc = DECL_SOURCE_LOCATION (cat_decl); |
2696 | ||
2697 | /* ??? not sure this is really necessary, the following references should | |
944fb799 | 2698 | force appropriate linkage linkage... |
d764a8e6 IS |
2699 | -- but ... ensure a reference to the class... */ |
2700 | t = objc_v2_get_class_reference (CLASS_NAME (cat)); | |
2701 | /* ... which we ignore so force it out.. */ | |
2702 | DECL_PRESERVE_P (t) = 1; | |
2703 | ||
2704 | snprintf (buf, BUFSIZE, "OBJC_CLASS_$_%s", IDENTIFIER_POINTER (CLASS_NAME (cat))); | |
2705 | class_name_expr = create_extern_decl (objc_v2_class_template, buf); | |
2706 | class_name_expr = build_fold_addr_expr (class_name_expr); | |
2707 | ||
2708 | cat_name_expr = add_objc_string (CLASS_SUPER_NAME (cat), class_names); | |
2709 | category = lookup_category (impent->imp_template, CLASS_SUPER_NAME (cat)); | |
2710 | ||
2711 | if (category && CLASS_PROTOCOL_LIST (category)) | |
2712 | { | |
2713 | generate_protocol_references (CLASS_PROTOCOL_LIST (category)); | |
2714 | protocol_decl = generate_v2_protocol_list (category, cat); | |
2715 | } | |
2716 | else | |
2717 | protocol_decl = NULL_TREE; | |
2718 | ||
c2beaa02 | 2719 | /* decl = update_var_decl(impent->class_decl); */ |
d764a8e6 IS |
2720 | |
2721 | props = generate_v2_property_table (NULL_TREE, cat); | |
2722 | ||
2723 | if (CLASS_NST_METHODS (cat)) | |
2724 | { | |
2725 | snprintf (buf, BUFSIZE, "_OBJC_CategoryInstanceMethods_%s_%s", | |
2726 | IDENTIFIER_POINTER (CLASS_NAME (cat)), | |
2727 | IDENTIFIER_POINTER (CLASS_SUPER_NAME (cat))); | |
2728 | inst_methods = generate_v2_dispatch_table (CLASS_NST_METHODS (cat), buf, | |
2729 | meta_cati_meth); | |
2730 | } | |
2731 | ||
2732 | if (CLASS_CLS_METHODS (cat)) | |
2733 | { | |
2734 | snprintf (buf, BUFSIZE, "_OBJC_CategoryClassMethods_%s_%s", | |
2735 | IDENTIFIER_POINTER (CLASS_NAME (cat)), | |
2736 | IDENTIFIER_POINTER (CLASS_SUPER_NAME (cat))); | |
2737 | class_methods = generate_v2_dispatch_table (CLASS_CLS_METHODS (cat), buf, | |
2738 | meta_catc_meth); | |
2739 | } | |
2740 | ||
2741 | initlist = build_v2_category_initializer (TREE_TYPE (cat_decl), | |
2742 | cat_name_expr, class_name_expr, | |
2743 | inst_methods, class_methods, | |
2744 | protocol_decl, props, loc); | |
2745 | ||
2746 | finish_var_decl (cat_decl, initlist); | |
2747 | impent->class_decl = cat_decl; | |
2748 | ||
c2beaa02 | 2749 | /* Add to list of pointers in __category_list section. */ |
d764a8e6 IS |
2750 | objc_v2_add_to_category_list (cat_decl); |
2751 | if (has_load_impl (CLASS_CLS_METHODS (impent->imp_context))) | |
2752 | objc_v2_add_to_nonlazy_category_list (cat_decl); | |
2753 | } | |
2754 | ||
c2beaa02 NP |
2755 | /* This routine declares a variable to hold the offset for ivar |
2756 | FIELD_DECL. Variable name is .objc_ivar.ClassName.IvarName. */ | |
d764a8e6 | 2757 | |
c2beaa02 NP |
2758 | typedef struct GTY(()) ivarref_entry |
2759 | { | |
d764a8e6 IS |
2760 | tree decl; |
2761 | tree offset; | |
2762 | } ivarref_entry; | |
d764a8e6 | 2763 | |
9771b263 | 2764 | static GTY (()) vec<ivarref_entry, va_gc> *ivar_offset_refs; |
d764a8e6 IS |
2765 | |
2766 | static tree | |
2767 | ivar_offset_ref (tree class_name, tree field_decl) | |
2768 | { | |
2769 | tree decl, field_decl_id; | |
2770 | ivarref_entry e; | |
2771 | bool global_var; | |
2772 | char buf[512]; | |
2773 | ||
2774 | create_ivar_offset_name (buf, class_name, field_decl); | |
2775 | field_decl_id = get_identifier (buf); | |
2776 | ||
2777 | if (ivar_offset_refs) | |
2778 | { | |
2779 | int count; | |
2780 | ivarref_entry *ref; | |
9771b263 | 2781 | FOR_EACH_VEC_ELT (*ivar_offset_refs, count, ref) |
d764a8e6 IS |
2782 | if (DECL_NAME (ref->decl) == field_decl_id) |
2783 | return ref->decl; | |
2784 | } | |
2785 | else | |
2786 | /* Somewhat arbitrary initial provision. */ | |
9771b263 | 2787 | vec_alloc (ivar_offset_refs, 32); |
d764a8e6 IS |
2788 | |
2789 | /* We come here if we don't find a match or at the start. */ | |
2790 | global_var = (TREE_PUBLIC (field_decl) || TREE_PROTECTED (field_decl)); | |
2791 | if (global_var) | |
2792 | decl = create_global_decl (TREE_TYPE (size_zero_node), buf); | |
2793 | else | |
2794 | decl = create_hidden_decl (TREE_TYPE (size_zero_node), buf); | |
2795 | ||
2796 | /* Make sure it ends up in an ObjC section. */ | |
2797 | OBJCMETA (decl, objc_meta, meta_base); | |
2798 | ||
2799 | e.decl = decl; | |
2800 | e.offset = byte_position (field_decl); | |
9771b263 | 2801 | vec_safe_push (ivar_offset_refs, e); |
d764a8e6 IS |
2802 | return decl; |
2803 | } | |
2804 | ||
c2beaa02 NP |
2805 | /* This routine builds initializer-list needed to initialize 'struct |
2806 | ivar_t list[count] of 'struct ivar_list_t' meta data. TYPE is | |
2807 | 'struct ivar_t' and FIELD_DECL is list of ivars for the target | |
2808 | class. */ | |
d764a8e6 IS |
2809 | |
2810 | static tree | |
2811 | build_v2_ivar_list_initializer (tree class_name, tree type, tree field_decl) | |
2812 | { | |
9771b263 | 2813 | vec<constructor_elt, va_gc> *inits = NULL; |
d764a8e6 | 2814 | |
944fb799 | 2815 | do |
d764a8e6 | 2816 | { |
9771b263 | 2817 | vec<constructor_elt, va_gc> *ivar = NULL; |
d764a8e6 IS |
2818 | int val; |
2819 | tree id; | |
2820 | ||
c2beaa02 | 2821 | /* Unnamed bitfields are ignored. */ |
d764a8e6 IS |
2822 | if (!DECL_NAME (field_decl)) |
2823 | { | |
2824 | field_decl = DECL_CHAIN (field_decl); | |
2825 | continue; | |
2826 | } | |
2827 | ||
c2beaa02 | 2828 | /* Set offset. */ |
d764a8e6 IS |
2829 | CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE, |
2830 | build_unary_op (input_location, | |
944fb799 MS |
2831 | ADDR_EXPR, |
2832 | ivar_offset_ref (class_name, | |
d764a8e6 IS |
2833 | field_decl), 0)); |
2834 | ||
c2beaa02 | 2835 | /* Set name. */ |
d764a8e6 IS |
2836 | CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE, |
2837 | add_objc_string (DECL_NAME (field_decl), | |
2838 | meth_var_names)); | |
2839 | ||
c2beaa02 | 2840 | /* Set type. */ |
a8f18c40 | 2841 | id = add_objc_string (encode_field_decl (field_decl), |
d764a8e6 IS |
2842 | meth_var_types); |
2843 | CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE, id); | |
d764a8e6 | 2844 | |
c2beaa02 | 2845 | /* Set alignment. */ |
d764a8e6 IS |
2846 | val = DECL_ALIGN_UNIT (field_decl); |
2847 | val = exact_log2 (val); | |
944fb799 | 2848 | CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE, |
d764a8e6 | 2849 | build_int_cst (integer_type_node, val)); |
944fb799 | 2850 | |
c2beaa02 | 2851 | /* Set size. */ |
d764a8e6 | 2852 | val = TREE_INT_CST_LOW (DECL_SIZE_UNIT (field_decl)); |
944fb799 | 2853 | CONSTRUCTOR_APPEND_ELT (ivar, NULL_TREE, |
d764a8e6 IS |
2854 | build_int_cst (integer_type_node, val)); |
2855 | ||
2856 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, | |
2857 | objc_build_constructor (type, ivar)); | |
2858 | ||
2859 | do | |
2860 | field_decl = DECL_CHAIN (field_decl); | |
2861 | while (field_decl && TREE_CODE (field_decl) != FIELD_DECL); | |
2862 | } | |
2863 | while (field_decl); | |
2864 | ||
2865 | return objc_build_constructor (build_array_type (type, 0), inits); | |
2866 | } | |
2867 | ||
2868 | /* | |
c2beaa02 NP |
2869 | struct ivar_list_t |
2870 | { | |
d764a8e6 IS |
2871 | uint32 entsize; |
2872 | uint32 count; | |
2873 | struct iver_t list[count]; | |
2874 | }; | |
2875 | */ | |
2876 | ||
2877 | static tree | |
2878 | build_v2_ivar_list_t_template (tree list_type, int size) | |
2879 | { | |
2880 | tree objc_ivar_list_record; | |
2881 | tree decls, *chain = NULL; | |
2882 | ||
c2beaa02 | 2883 | /* Anonymous. */ |
d764a8e6 IS |
2884 | objc_ivar_list_record = objc_start_struct (NULL_TREE); |
2885 | ||
2886 | /* uint32 entsize; */ | |
2887 | decls = add_field_decl (integer_type_node, "entsize", &chain); | |
2888 | ||
2889 | /* uint32 count; */ | |
2890 | add_field_decl (integer_type_node, "count", &chain); | |
2891 | ||
2892 | /* struct objc_ivar ivar_list[]; */ | |
2893 | add_field_decl (build_sized_array_type (list_type, size), | |
2894 | "list", &chain); | |
2895 | ||
2896 | objc_finish_struct (objc_ivar_list_record, decls); | |
2897 | return objc_ivar_list_record; | |
2898 | } | |
2899 | ||
c2beaa02 NP |
2900 | /* This routine declares a static variable of type 'struct |
2901 | ivar_list_t' and initializes it. chain is the source of the data, | |
2902 | name is the name for the var. attr is the meta-data section tag | |
2903 | attribute. templ is the implementation template for the class. */ | |
d764a8e6 IS |
2904 | |
2905 | static tree | |
2906 | generate_v2_ivars_list (tree chain, const char *name, tree attr, tree templ) | |
2907 | { | |
2908 | tree decl, initlist, ivar_list_template; | |
9771b263 | 2909 | vec<constructor_elt, va_gc> *inits = NULL; |
d764a8e6 | 2910 | int size, ivar_t_size; |
944fb799 | 2911 | |
d764a8e6 IS |
2912 | if (!chain || !name || !(size = ivar_list_length (chain))) |
2913 | return NULL_TREE; | |
2914 | ||
2915 | generating_instance_variables = 1; | |
2916 | ivar_list_template = build_v2_ivar_list_t_template (objc_v2_ivar_template, | |
2917 | size); | |
944fb799 | 2918 | |
d764a8e6 IS |
2919 | initlist = build_v2_ivar_list_initializer (CLASS_NAME (templ), |
2920 | objc_v2_ivar_template, chain); | |
2921 | ivar_t_size = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_ivar_template)); | |
944fb799 | 2922 | |
d764a8e6 | 2923 | decl = start_var_decl (ivar_list_template, name); |
944fb799 | 2924 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, |
d764a8e6 IS |
2925 | build_int_cst (integer_type_node, ivar_t_size)); |
2926 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, | |
2927 | build_int_cst (integer_type_node, size)); | |
2928 | CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, initlist); | |
2929 | OBJCMETA (decl, objc_meta, attr); | |
2930 | finish_var_decl (decl, objc_build_constructor (TREE_TYPE (decl), inits)); | |
2931 | generating_instance_variables = 0; | |
2932 | return decl; | |
2933 | } | |
2934 | ||
c2beaa02 NP |
2935 | /* Routine to build initializer list to initialize objects of type |
2936 | struct class_t; */ | |
d764a8e6 IS |
2937 | |
2938 | static tree | |
2939 | build_v2_class_t_initializer (tree type, tree isa, tree superclass, | |
2940 | tree ro, tree cache, tree vtable) | |
2941 | { | |
9771b263 | 2942 | vec<constructor_elt, va_gc> *initlist = NULL; |
d764a8e6 IS |
2943 | |
2944 | /* isa */ | |
2945 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, isa); | |
2946 | ||
2947 | /* superclass */ | |
2948 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, superclass); | |
2949 | ||
2950 | /* cache */ | |
2951 | if (cache) | |
2952 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, cache); | |
2953 | else | |
2954 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, null_pointer_node); | |
2955 | ||
2956 | /* vtable */ | |
2957 | if (vtable) | |
2958 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, vtable); | |
2959 | else | |
2960 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, null_pointer_node); | |
2961 | ||
2962 | /* ro */ | |
2963 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, ro); | |
2964 | ||
2965 | return objc_build_constructor (type, initlist); | |
2966 | } | |
2967 | ||
c2beaa02 | 2968 | /* Routine to build object of struct class_ro_t { ... }; */ |
d764a8e6 IS |
2969 | |
2970 | static tree | |
944fb799 | 2971 | build_v2_class_ro_t_initializer (tree type, tree name, |
d764a8e6 | 2972 | unsigned int flags, unsigned int instanceStart, |
944fb799 MS |
2973 | unsigned int instanceSize, |
2974 | tree ivarLayout, | |
2975 | tree baseMethods, tree baseProtocols, | |
d764a8e6 IS |
2976 | tree ivars, tree property_list) |
2977 | { | |
2978 | tree expr, unsigned_char_star, ltyp; | |
2979 | location_t loc; | |
9771b263 | 2980 | vec<constructor_elt, va_gc> *initlist = NULL; |
d764a8e6 IS |
2981 | |
2982 | /* TODO: fish out the real location from somewhere. */ | |
2983 | loc = UNKNOWN_LOCATION; | |
2984 | ||
2985 | /* flags */ | |
944fb799 | 2986 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, |
d764a8e6 IS |
2987 | build_int_cst (integer_type_node, flags)); |
2988 | ||
2989 | /* instanceStart */ | |
944fb799 | 2990 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, |
d764a8e6 IS |
2991 | build_int_cst (integer_type_node, instanceStart)); |
2992 | ||
2993 | /* instanceSize */ | |
944fb799 | 2994 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, |
d764a8e6 IS |
2995 | build_int_cst (integer_type_node, instanceSize)); |
2996 | ||
c2beaa02 NP |
2997 | /* This ABI is currently only used on m64 NeXT. We always |
2998 | explicitly declare the alignment padding. */ | |
2999 | /* reserved, pads alignment. */ | |
944fb799 | 3000 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, |
d764a8e6 IS |
3001 | build_int_cst (integer_type_node, 0)); |
3002 | ||
3003 | /* ivarLayout */ | |
3004 | unsigned_char_star = build_pointer_type (unsigned_char_type_node); | |
3005 | if (ivarLayout) | |
3006 | expr = ivarLayout; | |
3007 | else | |
3008 | expr = convert (unsigned_char_star, null_pointer_node); | |
3009 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, expr); | |
3010 | ||
3011 | /* name */ | |
3012 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, default_conversion (name)); | |
3013 | ||
3014 | /* baseMethods */ | |
3015 | ltyp = objc_method_list_ptr; | |
3016 | if (baseMethods) | |
3017 | expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, baseMethods, 0)); | |
3018 | else | |
3019 | expr = convert (ltyp, null_pointer_node); | |
3020 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, expr); | |
3021 | ||
3022 | /* baseProtocols */ | |
944fb799 | 3023 | ltyp = build_pointer_type (xref_tag (RECORD_TYPE, |
d764a8e6 IS |
3024 | get_identifier (UTAG_V2_PROTOCOL_LIST))); |
3025 | if (baseProtocols) | |
3026 | expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, baseProtocols, 0)); | |
3027 | else | |
3028 | expr = convert (ltyp, null_pointer_node); | |
3029 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, expr); | |
3030 | ||
3031 | /* ivars */ | |
3032 | ltyp = objc_v2_ivar_list_ptr; | |
3033 | if (ivars) | |
3034 | expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, ivars, 0)); | |
3035 | else | |
3036 | expr = convert (ltyp, null_pointer_node); | |
3037 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, expr); | |
3038 | ||
3039 | /* TODO: We don't yet have the weak/strong stuff... */ | |
3040 | /* weakIvarLayout */ | |
944fb799 | 3041 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, |
d764a8e6 IS |
3042 | convert (unsigned_char_star, null_pointer_node)); |
3043 | ||
3044 | /* property list */ | |
3045 | ltyp = objc_prop_list_ptr; | |
3046 | if (property_list) | |
3047 | expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, property_list, 0)); | |
3048 | else | |
3049 | expr = convert (ltyp, null_pointer_node); | |
3050 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, expr); | |
3051 | return objc_build_constructor (type, initlist); | |
3052 | } | |
3053 | ||
9771b263 | 3054 | static GTY (()) vec<ident_data_tuple, va_gc> *ehtype_list; |
d764a8e6 IS |
3055 | |
3056 | /* Record a name as needing a catcher. */ | |
3057 | static void | |
3058 | objc_v2_add_to_ehtype_list (tree name) | |
3059 | { | |
3060 | ident_data_tuple e; | |
3061 | if (ehtype_list) | |
3062 | { | |
3063 | int count = 0; | |
3064 | ident_data_tuple *ref; | |
3065 | ||
9771b263 | 3066 | FOR_EACH_VEC_ELT (*ehtype_list, count, ref) |
d764a8e6 IS |
3067 | if (ref->ident == name) |
3068 | return; /* Already entered. */ | |
3069 | } | |
3070 | else | |
3071 | /* Arbitrary initial count. */ | |
9771b263 | 3072 | vec_alloc (ehtype_list, 8); |
c2beaa02 | 3073 | |
d764a8e6 IS |
3074 | /* Not found, or new list. */ |
3075 | e.ident = name; | |
3076 | e.data = NULL_TREE; | |
9771b263 | 3077 | vec_safe_push (ehtype_list, e); |
d764a8e6 IS |
3078 | } |
3079 | ||
3080 | static void | |
3081 | generate_v2_class_structs (struct imp_entry *impent) | |
3082 | { | |
3083 | tree decl, name_expr, initlist, protocol_decl, metaclass_decl, class_decl; | |
3084 | tree field, firstIvar, chain; | |
3085 | tree class_superclass_expr, metaclass_superclass_expr, props; | |
3086 | /* TODO: figure out how to compute this. */ | |
3087 | tree ivarLayout = NULL_TREE; | |
3088 | tree my_super_id = NULL_TREE, root_expr = NULL_TREE; | |
3089 | tree inst_methods = NULL_TREE, class_methods = NULL_TREE; | |
3090 | tree inst_ivars = NULL_TREE, class_ivars = NULL_TREE; | |
3091 | location_t loc; | |
3092 | char buf[BUFSIZE]; | |
3093 | unsigned int instanceStart, instanceSize; | |
3094 | unsigned int flags = 0x01; /* RO_META */ | |
3095 | int cls_flags = impent->has_cxx_cdtors ? OBJC2_CLS_HAS_CXX_STRUCTORS | |
3096 | : 0 ; | |
3097 | ||
3098 | class_decl = impent->class_decl; | |
3099 | metaclass_decl = impent->meta_decl; | |
3100 | loc = DECL_SOURCE_LOCATION (class_decl); | |
3101 | ||
3102 | DECL_EXTERNAL (class_decl) = DECL_EXTERNAL (metaclass_decl) = 0; | |
3103 | TREE_PUBLIC (class_decl) = TREE_PUBLIC (metaclass_decl) = 1; | |
3104 | #ifdef OBJCPLUS | |
3105 | gcc_assert (!CP_DECL_CONTEXT (class_decl) || CP_DECL_CONTEXT (class_decl) == global_namespace); | |
3106 | gcc_assert (!CP_DECL_CONTEXT (metaclass_decl) || CP_DECL_CONTEXT (metaclass_decl) == global_namespace); | |
3107 | #endif | |
3108 | ||
c2beaa02 | 3109 | /* Generation of data for meta class. */ |
d764a8e6 IS |
3110 | my_super_id = CLASS_SUPER_NAME (impent->imp_template); |
3111 | if (my_super_id) | |
3112 | { | |
c2beaa02 NP |
3113 | /* Compute reference to root's name. For a meta class, "isa" is |
3114 | a reference to the root class name. */ | |
d764a8e6 IS |
3115 | tree my_root_id = my_super_id; |
3116 | tree my_root_int, interface; | |
3117 | do | |
3118 | { | |
3119 | my_root_int = lookup_interface (my_root_id); | |
3120 | ||
3121 | if (my_root_int && CLASS_SUPER_NAME (my_root_int)) | |
3122 | my_root_id = CLASS_SUPER_NAME (my_root_int); | |
3123 | else | |
3124 | break; | |
3125 | } | |
3126 | while (1); | |
3127 | ||
944fb799 | 3128 | /* {extern} struct class_t OBJC_METACLASS_$_<my_root_int> |
d764a8e6 | 3129 | create extern if not already declared. */ |
944fb799 | 3130 | snprintf (buf, BUFSIZE, "OBJC_METACLASS_$_%s", |
d764a8e6 IS |
3131 | IDENTIFIER_POINTER (CLASS_NAME (my_root_int))); |
3132 | root_expr = create_extern_decl (objc_v2_class_template, buf); | |
3133 | root_expr = build_fold_addr_expr (root_expr); | |
3134 | ||
3135 | /* Install class `isa' and `super' pointers at runtime. */ | |
3136 | interface = lookup_interface (my_super_id); | |
3137 | gcc_assert (interface); | |
c2beaa02 | 3138 | /* Similarly, for OBJC_CLASS_$_<interface>... */ |
944fb799 | 3139 | snprintf (buf, BUFSIZE, "OBJC_CLASS_$_%s", |
d764a8e6 IS |
3140 | IDENTIFIER_POINTER (CLASS_NAME (interface))); |
3141 | class_superclass_expr = create_extern_decl (objc_v2_class_template, buf); | |
3142 | class_superclass_expr = build_fold_addr_expr (class_superclass_expr); | |
c2beaa02 | 3143 | /* ... and for OBJC_METACLASS_$_<interface>. */ |
944fb799 | 3144 | snprintf (buf, BUFSIZE, "OBJC_METACLASS_$_%s", |
d764a8e6 IS |
3145 | IDENTIFIER_POINTER (CLASS_NAME (interface))); |
3146 | metaclass_superclass_expr = create_extern_decl (objc_v2_class_template, buf); | |
3147 | metaclass_superclass_expr = build_fold_addr_expr (metaclass_superclass_expr); | |
3148 | } | |
3149 | else | |
3150 | { | |
c2beaa02 | 3151 | /* Root class. */ |
d764a8e6 IS |
3152 | root_expr = build_unary_op (loc, ADDR_EXPR, metaclass_decl, 0); |
3153 | metaclass_superclass_expr = build_unary_op (loc, ADDR_EXPR, class_decl, 0); | |
3154 | class_superclass_expr = build_int_cst (NULL_TREE, 0); | |
c2beaa02 | 3155 | flags |= 0x02; /* RO_ROOT: it is also a root meta class. */ |
d764a8e6 IS |
3156 | } |
3157 | ||
3158 | if (CLASS_PROTOCOL_LIST (impent->imp_template)) | |
3159 | { | |
3160 | generate_protocol_references (CLASS_PROTOCOL_LIST (impent->imp_template)); | |
3161 | protocol_decl = generate_v2_protocol_list (impent->imp_template, | |
3162 | impent->imp_context); | |
3163 | } | |
3164 | else | |
3165 | protocol_decl = 0; | |
3166 | ||
3167 | name_expr = add_objc_string (CLASS_NAME (impent->imp_template), | |
3168 | class_names); | |
3169 | ||
3170 | if (CLASS_CLS_METHODS (impent->imp_context)) | |
3171 | { | |
3172 | snprintf (buf, BUFSIZE, "_OBJC_ClassMethods_%s", | |
3173 | IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context))); | |
944fb799 | 3174 | class_methods = |
d764a8e6 IS |
3175 | generate_v2_dispatch_table (CLASS_CLS_METHODS (impent->imp_context), |
3176 | buf, meta_clac_meth); | |
3177 | } | |
3178 | ||
3179 | instanceStart = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_class_template)); | |
3180 | ||
c2beaa02 NP |
3181 | /* Currently there are no class ivars and generation of class |
3182 | variables for the root of the inheritance has been removed. It | |
3183 | causes multiple defines if there are two root classes in the | |
3184 | link, because each will define its own identically-named offset | |
3185 | variable. */ | |
d764a8e6 IS |
3186 | |
3187 | class_ivars = NULL_TREE; | |
3188 | /* TODO: Add total size of class variables when implemented. */ | |
944fb799 | 3189 | instanceSize = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_class_template)); |
d764a8e6 IS |
3190 | |
3191 | /* So now build the META CLASS structs. */ | |
3192 | /* static struct class_ro_t _OBJC_METACLASS_Foo = { ... }; */ | |
3193 | ||
3194 | decl = start_var_decl (objc_v2_class_ro_template, | |
3195 | newabi_append_ro (IDENTIFIER_POINTER | |
3196 | (DECL_NAME (metaclass_decl)))); | |
3197 | ||
c2beaa02 | 3198 | /* TODO: ivarLayout needs t be built. */ |
944fb799 | 3199 | initlist = |
d764a8e6 IS |
3200 | build_v2_class_ro_t_initializer (TREE_TYPE (decl), name_expr, |
3201 | (flags | cls_flags), instanceStart, | |
944fb799 | 3202 | instanceSize, ivarLayout, |
d764a8e6 IS |
3203 | class_methods, protocol_decl, |
3204 | class_ivars, NULL_TREE); | |
3205 | /* The ROs sit in the default const section. */ | |
3206 | OBJCMETA (decl, objc_meta, meta_base); | |
3207 | finish_var_decl (decl, initlist); | |
3208 | ||
3209 | /* static struct class_t _OBJC_METACLASS_Foo = { ... }; */ | |
944fb799 | 3210 | initlist = |
d764a8e6 IS |
3211 | build_v2_class_t_initializer (TREE_TYPE (metaclass_decl), |
3212 | root_expr, | |
3213 | metaclass_superclass_expr, | |
3214 | build_fold_addr_expr (decl), | |
944fb799 | 3215 | build_fold_addr_expr (UOBJC_V2_CACHE_decl), |
d764a8e6 IS |
3216 | build_fold_addr_expr (UOBJC_V2_VTABLE_decl)); |
3217 | /* The class section attributes are set when they are created. */ | |
3218 | finish_var_decl (metaclass_decl, initlist); | |
3219 | impent->meta_decl = metaclass_decl; | |
3220 | ||
3221 | /* So now build the CLASS structs. */ | |
3222 | ||
3223 | flags = 0x0; /* ... */ | |
3224 | if (!my_super_id) | |
3225 | flags |= 0x02; /* RO_ROOT: this is a root class */ | |
3226 | ||
3227 | if (DECL_VISIBILITY (class_decl) == VISIBILITY_HIDDEN) | |
3228 | flags |= 0x10; /* RO_HIDDEN, OBJC2_CLS_HIDDEN; */ | |
3229 | ||
3230 | if (objc2_objc_exception_attr (impent->imp_template)) | |
3231 | flags |= 0x20; /* RO_EXCEPTION */ | |
3232 | ||
3233 | if (CLASS_NST_METHODS (impent->imp_context)) | |
3234 | { | |
3235 | snprintf (buf, BUFSIZE, "_OBJC_InstanceMethods_%s", | |
3236 | IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context))); | |
944fb799 | 3237 | inst_methods = |
d764a8e6 IS |
3238 | generate_v2_dispatch_table (CLASS_NST_METHODS (impent->imp_context), |
3239 | buf, meta_clai_meth); | |
3240 | } | |
3241 | ||
3242 | /* Sort out the ivars before we try to compute the class sizes. */ | |
3243 | if ((chain = CLASS_IVARS (impent->imp_template))) | |
3244 | { | |
3245 | snprintf (buf, BUFSIZE, "_OBJC_InstanceIvars_%s", | |
3246 | IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context))); | |
944fb799 | 3247 | inst_ivars = generate_v2_ivars_list (chain, buf, meta_clai_vars, |
d764a8e6 IS |
3248 | impent->imp_template); |
3249 | } | |
3250 | ||
c2beaa02 | 3251 | /* Compute instanceStart. */ |
d764a8e6 IS |
3252 | gcc_assert (CLASS_STATIC_TEMPLATE (impent->imp_template)); |
3253 | field = TYPE_FIELDS (CLASS_STATIC_TEMPLATE (impent->imp_template)); | |
3254 | if (my_super_id && field && TREE_CHAIN (field)) | |
3255 | field = TREE_CHAIN (field); | |
3256 | ||
3257 | firstIvar = field; | |
3258 | ||
3259 | while (firstIvar && TREE_CODE (firstIvar) != FIELD_DECL) | |
3260 | firstIvar = TREE_CHAIN (firstIvar); | |
3261 | ||
3262 | gcc_assert (inst_ivars? (firstIvar != NULL_TREE): true); | |
3263 | ||
c2beaa02 | 3264 | /* Compute instanceSize. */ |
d764a8e6 IS |
3265 | while (field && TREE_CHAIN (field) |
3266 | && TREE_CODE (TREE_CHAIN (field)) == FIELD_DECL) | |
3267 | field = TREE_CHAIN (field); | |
944fb799 | 3268 | |
d764a8e6 | 3269 | if (field && TREE_CODE (field) == FIELD_DECL) |
944fb799 | 3270 | instanceSize = int_byte_position (field) * BITS_PER_UNIT |
9439e9a1 | 3271 | + tree_to_shwi (DECL_SIZE (field)); |
d764a8e6 IS |
3272 | else |
3273 | instanceSize = 0; | |
3274 | instanceSize /= BITS_PER_UNIT; | |
3275 | ||
3276 | props = generate_v2_property_table (NULL_TREE, impent->imp_context); | |
3277 | ||
c2beaa02 NP |
3278 | /* If the class has no ivars, instanceStart should be set to the |
3279 | superclass's instanceSize. */ | |
944fb799 MS |
3280 | instanceStart = |
3281 | (inst_ivars != NULL_TREE) ? (unsigned) int_byte_position (firstIvar) | |
d764a8e6 IS |
3282 | : instanceSize; |
3283 | ||
3284 | /* static struct class_ro_t _OBJC_CLASS_Foo = { ... }; */ | |
944fb799 | 3285 | decl = start_var_decl (objc_v2_class_ro_template, |
d764a8e6 | 3286 | newabi_append_ro (IDENTIFIER_POINTER |
944fb799 | 3287 | (DECL_NAME (class_decl)))); |
d764a8e6 | 3288 | |
944fb799 | 3289 | initlist = |
d764a8e6 IS |
3290 | build_v2_class_ro_t_initializer (TREE_TYPE (decl), name_expr, |
3291 | (flags | cls_flags), instanceStart, | |
944fb799 | 3292 | instanceSize, ivarLayout, |
d764a8e6 IS |
3293 | inst_methods, protocol_decl, |
3294 | inst_ivars, props); | |
3295 | /* The ROs sit in the default const section. */ | |
3296 | OBJCMETA (decl, objc_meta, meta_base); | |
3297 | finish_var_decl (decl, initlist); | |
3298 | ||
3299 | /* static struct class_t _OBJC_CLASS_Foo = { ... }; */ | |
3300 | initlist = build_v2_class_t_initializer (TREE_TYPE (class_decl), | |
3301 | build_fold_addr_expr (metaclass_decl), | |
3302 | class_superclass_expr, | |
3303 | build_fold_addr_expr (decl), | |
944fb799 MS |
3304 | build_fold_addr_expr (UOBJC_V2_CACHE_decl), |
3305 | build_fold_addr_expr (UOBJC_V2_VTABLE_decl)); | |
d764a8e6 IS |
3306 | |
3307 | /* The class section attributes are set when they are created. */ | |
3308 | finish_var_decl (class_decl, initlist); | |
3309 | impent->class_decl = class_decl; | |
3310 | ||
3311 | objc_v2_add_to_class_list (class_decl); | |
3312 | if (has_load_impl (CLASS_CLS_METHODS (impent->imp_context))) | |
3313 | objc_v2_add_to_nonlazy_class_list (class_decl); | |
3314 | ||
3315 | if (flags & 0x20) /* RO_EXCEPTION */ | |
3316 | objc_v2_add_to_ehtype_list (CLASS_NAME (impent->imp_template)); | |
3317 | } | |
3318 | ||
c2beaa02 NP |
3319 | /* This routine outputs the (ivar_reference_offset, offset) |
3320 | tuples. */ | |
d764a8e6 IS |
3321 | |
3322 | static void | |
3323 | build_v2_ivar_offset_ref_table (void) | |
3324 | { | |
3325 | int count; | |
3326 | ivarref_entry *ref; | |
3327 | ||
9771b263 | 3328 | if (!vec_safe_length (ivar_offset_refs)) |
d764a8e6 IS |
3329 | return; |
3330 | ||
9771b263 | 3331 | FOR_EACH_VEC_ELT (*ivar_offset_refs, count, ref) |
d764a8e6 IS |
3332 | finish_var_decl (ref->decl, ref->offset); |
3333 | } | |
3334 | ||
d764a8e6 IS |
3335 | static void |
3336 | objc_generate_v2_next_metadata (void) | |
3337 | { | |
3338 | struct imp_entry *impent; | |
3339 | ||
c2beaa02 NP |
3340 | /* FIXME: Make sure that we generate no metadata if there is nothing |
3341 | to put into it. */ | |
3342 | ||
d764a8e6 IS |
3343 | gcc_assert (!objc_static_instances); /* Not for NeXT */ |
3344 | ||
3345 | build_metadata_templates (); | |
3346 | ||
3347 | for (impent = imp_list; impent; impent = impent->next) | |
3348 | { | |
3349 | /* If -gen-decls is present, Dump the @interface of each class. | |
c2beaa02 NP |
3350 | TODO: Dump the classes in the order they were found, rather |
3351 | than in reverse order as we are doing now. */ | |
d764a8e6 IS |
3352 | if (flag_gen_declaration) |
3353 | dump_interface (gen_declaration_file, impent->imp_context); | |
3354 | ||
3355 | /* all of the following reference the string pool... */ | |
3356 | if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION_TYPE) | |
3357 | generate_v2_class_structs (impent); | |
3358 | else | |
3359 | generate_v2_category (impent); | |
3360 | } | |
3361 | ||
3362 | build_next_selector_translation_table (); | |
3363 | build_v2_message_ref_translation_table (); | |
3364 | ||
3365 | /* This will add "Protocol" to the class refs. */ | |
3366 | generate_v2_protocols (); | |
3367 | ||
3368 | build_v2_classrefs_table (); | |
3369 | build_v2_super_classrefs_table (/*metaclass= */false); | |
3370 | build_v2_super_classrefs_table (/*metaclass= */true); | |
3371 | ||
3372 | build_v2_ivar_offset_ref_table (); | |
3373 | ||
3374 | build_v2_protocol_list_translation_table (); | |
3375 | build_v2_protocol_list_address_table (); | |
3376 | ||
944fb799 | 3377 | build_v2_address_table (class_list, "_OBJC_ClassList$", |
d764a8e6 | 3378 | meta_label_classlist); |
944fb799 | 3379 | build_v2_address_table (category_list, "_OBJC_CategoryList$", |
d764a8e6 | 3380 | meta_label_categorylist); |
944fb799 | 3381 | build_v2_address_table (nonlazy_class_list, "_OBJC_NonLazyClassList$", |
d764a8e6 | 3382 | meta_label_nonlazy_classlist); |
944fb799 | 3383 | build_v2_address_table (nonlazy_category_list, "_OBJC_NonLazyCategoryList$", |
d764a8e6 IS |
3384 | meta_label_nonlazy_categorylist); |
3385 | ||
d764a8e6 IS |
3386 | /* Generate catch objects for eh, if any are needed. */ |
3387 | build_v2_eh_catch_objects (); | |
3388 | ||
3389 | /* Emit the string table last. */ | |
3390 | generate_strings (); | |
3391 | } | |
3392 | ||
3393 | /* NOTE --- Output NeXT V2 Exceptions --- */ | |
3394 | ||
3395 | static GTY(()) tree objc_v2_ehtype_template; | |
3396 | static GTY(()) tree next_v2_ehvtable_decl; | |
3397 | static GTY(()) tree next_v2_EHTYPE_id_decl; | |
3398 | ||
3399 | static void | |
3400 | build_v2_ehtype_template (void) | |
3401 | { | |
3402 | tree decls, *chain = NULL; | |
3403 | objc_v2_ehtype_template = objc_start_struct (get_identifier (UTAG_V2_EH_TYPE)); | |
3404 | ||
3405 | /* void *_objc_ehtype_vtable; */ | |
3406 | decls = add_field_decl (ptr_type_node, "_objc_ehtype_vtable_ptr", &chain); | |
3407 | ||
3408 | /* const char *className; */ | |
3409 | add_field_decl (string_type_node, "className", &chain); | |
3410 | ||
3411 | /* struct class_t *const cls; */ | |
3412 | add_field_decl (build_pointer_type (objc_v2_class_template), "cls", &chain); | |
3413 | ||
3414 | objc_finish_struct (objc_v2_ehtype_template, decls); | |
3415 | } | |
3416 | ||
c2beaa02 NP |
3417 | /* Template for the Objective-C family typeinfo type for ABI=2. This |
3418 | starts off the same as the gxx/cxx eh typeinfo. | |
d764a8e6 | 3419 | |
c2beaa02 NP |
3420 | struct _objc_ehtype_t |
3421 | { | |
d764a8e6 IS |
3422 | void *_objc_ehtype_vtable_ptr; - as per c++ |
3423 | const char *className; - as per c++ | |
3424 | struct class_t *const cls; | |
3425 | } | |
3426 | */ | |
3427 | ||
3428 | /* This routine builds initializer list for object of type struct _objc_ehtype_t. | |
3429 | */ | |
3430 | ||
3431 | static tree | |
3432 | objc2_build_ehtype_initializer (tree name, tree cls) | |
3433 | { | |
9771b263 | 3434 | vec<constructor_elt, va_gc> *initlist = NULL; |
d764a8e6 IS |
3435 | tree addr, offs; |
3436 | ||
c2beaa02 NP |
3437 | /* This is done the same way as c++, missing the two first entries |
3438 | in the parent vtable. NOTE: there is a fix-me in the Apple/NeXT | |
3439 | runtime source about this so, perhaps, this will change at some | |
3440 | point. */ | |
d764a8e6 IS |
3441 | /* _objc_ehtype_vtable + 2*sizeof(void*) */ |
3442 | if (!next_v2_ehvtable_decl) | |
3443 | { | |
3444 | next_v2_ehvtable_decl = | |
3445 | start_var_decl (ptr_type_node, TAG_NEXT_EHVTABLE_NAME); | |
3446 | TREE_STATIC (next_v2_ehvtable_decl) = 0; | |
3447 | DECL_EXTERNAL (next_v2_ehvtable_decl) = 1; | |
3448 | TREE_PUBLIC (next_v2_ehvtable_decl) = 1; | |
3449 | } | |
3450 | addr = build_fold_addr_expr_with_type (next_v2_ehvtable_decl, ptr_type_node); | |
3451 | offs = size_int (2 * int_cst_value (TYPE_SIZE_UNIT (ptr_type_node))); | |
5d49b6a7 | 3452 | addr = fold_build_pointer_plus (addr, offs); |
d764a8e6 IS |
3453 | |
3454 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, addr); | |
3455 | ||
3456 | /* className */ | |
3457 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, name); | |
3458 | ||
3459 | /* cls */ | |
3460 | CONSTRUCTOR_APPEND_ELT (initlist, NULL_TREE, cls); | |
3461 | ||
3462 | return objc_build_constructor (objc_v2_ehtype_template, initlist); | |
3463 | } | |
3464 | ||
3465 | static tree | |
3466 | build_ehtype (tree name, const char *eh_name, bool weak) | |
3467 | { | |
3468 | tree name_expr, class_name_expr, ehtype_decl, inits; | |
3469 | ||
3470 | name_expr = add_objc_string (name, class_names); | |
c2beaa02 NP |
3471 | /* Extern ref. for the class. ??? Maybe we can look this up |
3472 | somewhere. */ | |
944fb799 | 3473 | class_name_expr = |
d764a8e6 IS |
3474 | create_extern_decl (objc_v2_class_template, |
3475 | objc_build_internal_classname (name, false)); | |
3476 | class_name_expr = build_fold_addr_expr (class_name_expr); | |
3477 | ehtype_decl = create_global_decl (objc_v2_ehtype_template, eh_name); | |
3478 | if (weak) | |
3479 | DECL_WEAK (ehtype_decl) = 1; | |
3480 | inits = objc2_build_ehtype_initializer (name_expr, class_name_expr); | |
3481 | OBJCMETA (ehtype_decl, objc_meta, meta_ehtype); | |
3482 | finish_var_decl (ehtype_decl, inits); | |
3483 | return ehtype_decl; | |
3484 | } | |
3485 | ||
3486 | /* This routine returns TRUE if CLS or any of its super classes has | |
c2beaa02 | 3487 | __attribute__ ((objc_exception)). */ |
d764a8e6 IS |
3488 | |
3489 | static bool | |
3490 | objc2_objc_exception_attr (tree cls) | |
3491 | { | |
3492 | while (cls) | |
3493 | { | |
3494 | if (CLASS_HAS_EXCEPTION_ATTR (cls)) | |
3495 | return true; | |
3496 | cls = lookup_interface (CLASS_SUPER_NAME (cls)); | |
3497 | } | |
3498 | ||
944fb799 | 3499 | return false; |
d764a8e6 IS |
3500 | } |
3501 | ||
944fb799 | 3502 | static bool |
d764a8e6 IS |
3503 | is_implemented (tree name) |
3504 | { | |
3505 | struct imp_entry *t; | |
3506 | for (t = imp_list; t; t = t->next) | |
3507 | if (TREE_CODE (t->imp_context) == CLASS_IMPLEMENTATION_TYPE | |
3508 | && CLASS_NAME (t->imp_template) == name) | |
3509 | return true; | |
3510 | ||
3511 | return false; | |
3512 | } | |
3513 | ||
3514 | /* We will build catch objects: | |
3515 | for any type implemented here. | |
3516 | for any type used in a catch that has no exception attribute. */ | |
3517 | static void build_v2_eh_catch_objects (void) | |
3518 | { | |
3519 | int count=0; | |
3520 | ident_data_tuple *ref; | |
3521 | ||
9771b263 | 3522 | if (!vec_safe_length (ehtype_list)) |
d764a8e6 IS |
3523 | return; |
3524 | ||
9771b263 | 3525 | FOR_EACH_VEC_ELT (*ehtype_list, count, ref) |
d764a8e6 IS |
3526 | { |
3527 | char buf[BUFSIZE]; | |
3528 | bool impl = is_implemented (ref->ident); | |
3529 | bool excpt = objc2_objc_exception_attr (lookup_interface (ref->ident)); | |
3530 | snprintf (buf, BUFSIZE, "OBJC_EHTYPE_$_%s", IDENTIFIER_POINTER (ref->ident)); | |
3531 | if (!impl && excpt) | |
3532 | /* The User says this class has a catcher already. */ | |
3533 | ref->data = create_extern_decl (objc_v2_ehtype_template, buf); | |
3534 | else | |
3535 | /* Create a catcher, weak if it wasn't marked. */ | |
3536 | ref->data = build_ehtype (ref->ident, buf, !excpt); | |
3537 | } | |
3538 | } | |
3539 | ||
3540 | static tree | |
3541 | lookup_ehtype_ref (tree id) | |
3542 | { | |
3543 | int count=0; | |
3544 | ident_data_tuple *ref; | |
3545 | ||
9771b263 | 3546 | if (!vec_safe_length (ehtype_list)) |
d764a8e6 IS |
3547 | return NULL_TREE; |
3548 | ||
9771b263 | 3549 | FOR_EACH_VEC_ELT (*ehtype_list, count, ref) |
d764a8e6 IS |
3550 | if (ref->ident == id) |
3551 | return ref->data; | |
3552 | return NULL_TREE; | |
3553 | } | |
3554 | ||
c2beaa02 NP |
3555 | /* This hook, called via lang_eh_runtime_type, generates a runtime |
3556 | object which is either the address of the 'OBJC_EHTYPE_$_class' | |
3557 | object or address of external OBJC_EHTYPE_id object. */ | |
d764a8e6 IS |
3558 | static tree |
3559 | next_runtime_02_eh_type (tree type) | |
3560 | { | |
3561 | tree t; | |
3562 | ||
3563 | if (type == error_mark_node | |
3564 | /*|| errorcount || sorrycount*/) | |
3565 | goto err_mark_in; | |
3566 | ||
3567 | if (POINTER_TYPE_P (type) && objc_is_object_id (TREE_TYPE (type))) | |
3568 | { | |
3569 | if (!next_v2_EHTYPE_id_decl) | |
3570 | { | |
c2beaa02 NP |
3571 | /* This is provided by the Apple/NeXT libobjc.dylib so we |
3572 | need only to reference it. */ | |
944fb799 | 3573 | next_v2_EHTYPE_id_decl = |
d764a8e6 IS |
3574 | start_var_decl (objc_v2_ehtype_template, "OBJC_EHTYPE_id"); |
3575 | DECL_EXTERNAL (next_v2_EHTYPE_id_decl) = 1; | |
3576 | TREE_PUBLIC (next_v2_EHTYPE_id_decl) = 1; | |
3577 | TREE_STATIC (next_v2_EHTYPE_id_decl) = 0; | |
3578 | } | |
3579 | return build_fold_addr_expr (next_v2_EHTYPE_id_decl); | |
3580 | } | |
3581 | ||
3582 | if (!POINTER_TYPE_P (type) || !TYPED_OBJECT (TREE_TYPE (type))) | |
3583 | { | |
3584 | #ifdef OBJCPLUS | |
c2beaa02 NP |
3585 | /* This routine is also called for c++'s catch clause; in which |
3586 | case, we use c++'s typeinfo decl. */ | |
d764a8e6 IS |
3587 | return build_eh_type_type (type); |
3588 | #else | |
3589 | error ("non-objective-c type '%T' cannot be caught", type); | |
3590 | goto err_mark_in; | |
3591 | #endif | |
3592 | } | |
944fb799 | 3593 | else |
d764a8e6 | 3594 | t = OBJC_TYPE_NAME (TREE_TYPE (type)); |
944fb799 | 3595 | |
c2beaa02 | 3596 | /* We have to build a reference to the OBJC_EHTYPE_<Class>. */ |
d764a8e6 IS |
3597 | t = lookup_ehtype_ref (t); |
3598 | if (!t) | |
3599 | goto err_mark_in; | |
3600 | ||
3601 | return build_fold_addr_expr (t); | |
3602 | ||
3603 | err_mark_in: | |
3604 | return error_mark_node; | |
3605 | } | |
3606 | ||
3607 | static GTY(()) tree objc_eh_personality_decl; | |
3608 | ||
3609 | static tree | |
3610 | objc_eh_personality (void) | |
3611 | { | |
3612 | if (!objc_eh_personality_decl) | |
3613 | objc_eh_personality_decl = build_personality_function ("objc"); | |
3614 | return objc_eh_personality_decl; | |
3615 | } | |
3616 | ||
3617 | /* NOTE --- interfaces --- */ | |
3618 | ||
3619 | static tree | |
3620 | build_throw_stmt (location_t loc, tree throw_expr, bool rethrown) | |
3621 | { | |
3622 | tree t; | |
3623 | if (rethrown) | |
3624 | /* We have a separate re-throw entry. */ | |
3625 | t = build_function_call_vec (loc, objc_rethrow_exception_decl, NULL, NULL); | |
3626 | else | |
3627 | { | |
c2beaa02 | 3628 | /* Throw like the others... */ |
9771b263 DN |
3629 | vec<tree, va_gc> *parms; |
3630 | vec_alloc (parms, 1); | |
3631 | parms->quick_push (throw_expr); | |
3632 | t = build_function_call_vec (loc, objc_exception_throw_decl, parms, 0); | |
3633 | vec_free (parms); | |
d764a8e6 IS |
3634 | } |
3635 | return add_stmt (t); | |
3636 | } | |
3637 | ||
3638 | /* Build __builtin_eh_pointer. */ | |
3639 | ||
3640 | static tree | |
3641 | objc_build_exc_ptr (struct objc_try_context **x ATTRIBUTE_UNUSED) | |
3642 | { | |
3643 | tree t; | |
e79983f4 | 3644 | t = builtin_decl_explicit (BUILT_IN_EH_POINTER); |
d764a8e6 IS |
3645 | t = build_call_expr (t, 1, integer_zero_node); |
3646 | return fold_convert (objc_object_type, t); | |
3647 | } | |
3648 | ||
3649 | static tree begin_catch (struct objc_try_context **cur_try_context, tree type, | |
3650 | tree decl, tree compound, bool ellipsis ATTRIBUTE_UNUSED) | |
3651 | { | |
3652 | tree t; | |
3653 | ||
3654 | /* Record the data for the catch in the try context so that we can | |
3655 | finalize it later. Ellipsis is signalled by a NULL entry. */ | |
3656 | if (ellipsis) | |
3657 | t = build_stmt (input_location, CATCH_EXPR, NULL_TREE, compound); | |
3658 | else | |
3659 | t = build_stmt (input_location, CATCH_EXPR, type, compound); | |
3660 | (*cur_try_context)->current_catch = t; | |
3661 | ||
3662 | /* Initialize the decl from the EXC_PTR_EXPR we get from the runtime. */ | |
3663 | t = objc_build_exc_ptr (cur_try_context); | |
3664 | t = convert (TREE_TYPE (decl), t); | |
c2beaa02 | 3665 | /* FIXME: location. */ |
d764a8e6 IS |
3666 | if (type && type != error_mark_node) |
3667 | { | |
3668 | t = build1(NOP_EXPR, ptr_type_node, t); | |
3669 | t = build_function_call (input_location, objc2_begin_catch_decl, | |
3670 | tree_cons (NULL_TREE, t, NULL_TREE)); | |
3671 | ||
c2beaa02 NP |
3672 | /* We might want to build a catch object for this (if it's not |
3673 | id). */ | |
d764a8e6 IS |
3674 | if (POINTER_TYPE_P (type) |
3675 | && !objc_is_object_id (TREE_TYPE (type)) | |
3676 | && TYPED_OBJECT (TREE_TYPE (type))) | |
3677 | objc_v2_add_to_ehtype_list (OBJC_TYPE_NAME (TREE_TYPE (type))); | |
3678 | } | |
3679 | return build2 (MODIFY_EXPR, void_type_node, decl, t); | |
3680 | } | |
3681 | ||
3682 | /* try { catch-body } finally { objc_end_catch (); } */ | |
944fb799 | 3683 | static void |
d764a8e6 IS |
3684 | finish_catch (struct objc_try_context **cur_try_context, tree curr_catch) |
3685 | { | |
3686 | struct objc_try_context *ct; | |
3687 | tree try_exp, func, *l, t ; | |
3688 | location_t loc = (*cur_try_context)->try_locus; | |
3689 | ||
3690 | if (!curr_catch || curr_catch == error_mark_node) | |
3691 | return; | |
3692 | ||
3693 | t = CATCH_BODY (curr_catch); | |
3694 | if (TREE_CODE (t) == BIND_EXPR) | |
3695 | { | |
c2beaa02 | 3696 | /* Usual case of @catch (objc-expr). */ |
d764a8e6 IS |
3697 | objc_begin_try_stmt (loc, BIND_EXPR_BODY (t)); |
3698 | BIND_EXPR_BODY (t) = NULL_TREE; | |
3699 | l = &BIND_EXPR_BODY (t); | |
3700 | } | |
3701 | else | |
3702 | { | |
c2beaa02 | 3703 | /* NULL entry, meaning @catch (...). */ |
d764a8e6 IS |
3704 | objc_begin_try_stmt (loc, t); |
3705 | CATCH_BODY (curr_catch) = NULL_TREE; | |
3706 | l = &CATCH_BODY (curr_catch); | |
3707 | } | |
3708 | ||
c2beaa02 | 3709 | /* Pick up the new context we made in begin_try above... */ |
944fb799 | 3710 | ct = *cur_try_context; |
d764a8e6 IS |
3711 | func = build_function_call_vec (loc, objc2_end_catch_decl, NULL, NULL); |
3712 | append_to_statement_list (func, &ct->finally_body); | |
3713 | try_exp = build_stmt (loc, TRY_FINALLY_EXPR, ct->try_body, ct->finally_body); | |
3714 | *cur_try_context = ct->outer; | |
3715 | free (ct); | |
3716 | append_to_statement_list (try_exp, l); | |
3717 | append_to_statement_list (curr_catch, &((*cur_try_context)->catch_list)); | |
3718 | } | |
3719 | ||
944fb799 | 3720 | static tree |
d764a8e6 IS |
3721 | finish_try_stmt (struct objc_try_context **cur_try_context) |
3722 | { | |
3723 | struct objc_try_context *c = *cur_try_context; | |
3724 | tree stmt = c->try_body; | |
3725 | if (c->catch_list) | |
3726 | stmt = build_stmt (c->try_locus, TRY_CATCH_EXPR, stmt, c->catch_list); | |
3727 | if (c->finally_body) | |
3728 | stmt = build_stmt (c->try_locus, TRY_FINALLY_EXPR, stmt, c->finally_body); | |
3729 | return stmt; | |
3730 | } | |
3731 | ||
3732 | #include "gt-objc-objc-next-runtime-abi-02.h" |