2985 lines
92 KiB
C
2985 lines
92 KiB
C
/* Next Runtime (ABI-0/1) private.
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Copyright (C) 2011 Free Software Foundation, Inc.
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Contributed by Iain Sandoe (split from objc-act.c)
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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/* This implements the original NeXT ABI (0) used for m32 code and
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indicated by module version 6. It also implements the small number
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of additions made for properties and optional protocol methods as
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ABI=1 (module version 7). */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tree.h"
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#ifdef OBJCPLUS
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#include "cp/cp-tree.h"
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#else
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#include "c/c-tree.h"
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#include "c/c-lang.h"
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#endif
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#include "langhooks.h"
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#include "c-family/c-objc.h"
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#include "objc-act.h"
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/* When building Objective-C++, we are not linking against the C
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front-end and so need to replicate the C tree-construction
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functions in some way. */
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#ifdef OBJCPLUS
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#define OBJCP_REMAP_FUNCTIONS
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#include "objcp-decl.h"
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#endif /* OBJCPLUS */
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#include "ggc.h"
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#include "target.h"
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#include "c-family/c-target.h"
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#include "tree-iterator.h"
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#include "objc-runtime-hooks.h"
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#include "objc-runtime-shared-support.h"
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#include "objc-encoding.h"
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/* NeXT ABI 0 and 1 private definitions. */
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#define DEF_CONSTANT_STRING_CLASS_NAME "NSConstantString"
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#define TAG_GETCLASS "objc_getClass"
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#define TAG_GETMETACLASS "objc_getMetaClass"
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#define TAG_MSGSEND "objc_msgSend"
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#define TAG_MSGSENDSUPER "objc_msgSendSuper"
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#define TAG_MSGSEND_STRET "objc_msgSend_stret"
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#define TAG_MSGSENDSUPER_STRET "objc_msgSendSuper_stret"
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/* NeXT-specific tags. */
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#define TAG_MSGSEND_NONNIL "objc_msgSendNonNil"
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#define TAG_MSGSEND_NONNIL_STRET "objc_msgSendNonNil_stret"
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#define TAG_EXCEPTIONEXTRACT "objc_exception_extract"
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#define TAG_EXCEPTIONTRYENTER "objc_exception_try_enter"
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#define TAG_EXCEPTIONTRYEXIT "objc_exception_try_exit"
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#define TAG_EXCEPTIONMATCH "objc_exception_match"
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#define TAG_SETJMP "_setjmp"
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#define TAG_ASSIGNIVAR "objc_assign_ivar"
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#define TAG_ASSIGNGLOBAL "objc_assign_global"
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#define TAG_ASSIGNSTRONGCAST "objc_assign_strongCast"
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/* Branch entry points. All that matters here are the addresses;
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functions with these names do not really exist in libobjc. */
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#define TAG_MSGSEND_FAST "objc_msgSend_Fast"
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#define TAG_ASSIGNIVAR_FAST "objc_assign_ivar_Fast"
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/* The version identifies which language generation and runtime the
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module (file) was compiled for, and is recorded in the module
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descriptor. */
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#define OBJC_VERSION (flag_objc_abi >= 1 ? 7 : 6)
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#define UTAG_CLASS_EXT "_objc_class_ext"
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#define UTAG_PROPERTY_LIST "_prop_list_t"
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#define UTAG_PROTOCOL_EXT "_objc_protocol_extension"
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#define CLS_HAS_CXX_STRUCTORS 0x2000L
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/* rt_trees identifiers - shared between NeXT implementations. These
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allow the FE to tag meta-data in a manner that survives LTO and can
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be used when the runtime requires that certain meta-data items
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appear in particular named sections. */
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#include "objc-next-metadata-tags.h"
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extern GTY(()) tree objc_rt_trees[OCTI_RT_META_MAX];
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static void next_runtime_01_initialize (void);
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static tree next_runtime_abi_01_super_superclassfield_id (void);
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static tree next_runtime_abi_01_class_decl (tree);
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static tree next_runtime_abi_01_metaclass_decl (tree);
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static tree next_runtime_abi_01_category_decl (tree);
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static tree next_runtime_abi_01_protocol_decl (tree);
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static tree next_runtime_abi_01_string_decl (tree, const char *, string_section);
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static tree next_runtime_abi_01_get_class_reference (tree);
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static tree next_runtime_abi_01_build_selector_reference (location_t, tree, tree);
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static tree next_runtime_abi_01_get_protocol_reference (location_t, tree);
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static tree next_runtime_abi_01_build_ivar_ref (location_t, tree, tree);
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static tree next_runtime_abi_01_get_class_super_ref (location_t, struct imp_entry *, bool);
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static tree next_runtime_abi_01_get_category_super_ref (location_t, struct imp_entry *, bool);
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static tree next_runtime_abi_01_receiver_is_class_object (tree);
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static void next_runtime_abi_01_get_arg_type_list_base (VEC(tree,gc) **, tree,
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int, int);
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static tree next_runtime_abi_01_build_objc_method_call (location_t, tree, tree,
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tree, tree, tree, int);
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static bool next_runtime_abi_01_setup_const_string_class_decl (void);
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static tree next_runtime_abi_01_build_const_string_constructor (location_t, tree, int);
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static void objc_generate_v1_next_metadata (void);
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static void build_next_objc_exception_stuff (void);
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static tree objc_eh_runtime_type (tree type);
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static tree objc_eh_personality (void);
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static tree build_throw_stmt (location_t, tree, bool);
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static tree objc_build_exc_ptr (struct objc_try_context **);
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static tree begin_catch (struct objc_try_context **, tree, tree, tree, bool);
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static void finish_catch (struct objc_try_context **, tree);
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static tree finish_try_stmt (struct objc_try_context **);
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bool
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objc_next_runtime_abi_01_init (objc_runtime_hooks *rthooks)
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{
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if (flag_objc_exceptions
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&& !flag_objc_sjlj_exceptions)
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{
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warning_at (UNKNOWN_LOCATION, OPT_Wall,
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"%<-fobjc-sjlj-exceptions%> is the only supported exceptions "
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"system for %<-fnext-runtime%> with %<-fobjc-abi-version%> < 2");
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}
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rthooks->initialize = next_runtime_01_initialize;
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rthooks->default_constant_string_class_name = DEF_CONSTANT_STRING_CLASS_NAME;
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rthooks->tag_getclass = TAG_GETCLASS;
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rthooks->super_superclassfield_ident = next_runtime_abi_01_super_superclassfield_id;
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rthooks->class_decl = next_runtime_abi_01_class_decl;
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rthooks->metaclass_decl = next_runtime_abi_01_metaclass_decl;
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rthooks->category_decl = next_runtime_abi_01_category_decl;
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rthooks->protocol_decl = next_runtime_abi_01_protocol_decl;
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rthooks->string_decl = next_runtime_abi_01_string_decl;
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rthooks->get_class_reference = next_runtime_abi_01_get_class_reference;
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rthooks->build_selector_reference = next_runtime_abi_01_build_selector_reference;
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rthooks->get_protocol_reference = next_runtime_abi_01_get_protocol_reference;
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rthooks->build_ivar_reference = next_runtime_abi_01_build_ivar_ref;
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rthooks->get_class_super_ref = next_runtime_abi_01_get_class_super_ref;
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rthooks->get_category_super_ref = next_runtime_abi_01_get_category_super_ref;
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rthooks->receiver_is_class_object = next_runtime_abi_01_receiver_is_class_object;
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rthooks->get_arg_type_list_base = next_runtime_abi_01_get_arg_type_list_base;
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rthooks->build_objc_method_call = next_runtime_abi_01_build_objc_method_call;
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rthooks->setup_const_string_class_decl =
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next_runtime_abi_01_setup_const_string_class_decl;
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rthooks->build_const_string_constructor =
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next_runtime_abi_01_build_const_string_constructor;
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rthooks->build_throw_stmt = build_throw_stmt;
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rthooks->build_exc_ptr = objc_build_exc_ptr;
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rthooks->begin_catch = begin_catch;
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rthooks->finish_catch = finish_catch;
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rthooks->finish_try_stmt = finish_try_stmt;
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rthooks->generate_metadata = objc_generate_v1_next_metadata;
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return true;
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}
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/* We need a way to convey what kind of meta-data are represented by a
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given variable, since each type is expected (by the runtime) to be
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found in a specific named section. The solution must be usable
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with LTO.
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The scheme used for NeXT ABI 0/1 (partial matching of variable
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names) is not satisfactory for LTO & ABI-2. We now tag ObjC
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meta-data with identification attributes in the front end. The
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back-end may choose to act on these as it requires. */
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static void
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next_runtime_abi_01_init_metadata_attributes (void)
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{
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if (!objc_meta)
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objc_meta = get_identifier ("OBJC1META");
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if (!meta_base)
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meta_base = get_identifier ("V1_BASE");
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meta_class = get_identifier ("V1_CLAS");
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meta_metaclass = get_identifier ("V1_META");
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meta_category = get_identifier ("V1_CATG");
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meta_protocol = get_identifier ("V1_PROT");
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meta_clac_vars = get_identifier ("V1_CLCV");
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meta_clai_vars = get_identifier ("V1_CLIV");
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meta_clac_meth = get_identifier ("V1_CLCM");
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meta_clai_meth = get_identifier ("V1_CLIM");
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meta_catc_meth = get_identifier ("V1_CACM");
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meta_cati_meth = get_identifier ("V1_CAIM");
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meta_proto_cls_meth = get_identifier ("V1_PCLM");
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meta_proto_nst_meth = get_identifier ("V1_PNSM");
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meta_clas_prot = get_identifier ("V1_CLPR");
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meta_catg_prot = get_identifier ("V1_CAPR");
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meta_class_reference = get_identifier ("V1_CLRF");
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meta_proto_ref = get_identifier ("V1_PRFS");
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meta_sel_refs = get_identifier ("V1_SRFS");
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meta_class_name = get_identifier ("V1_CLSN");
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meta_meth_name = get_identifier ("V1_METN");
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meta_meth_type = get_identifier ("V1_METT");
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meta_prop_name_attr = get_identifier ("V1_STRG");
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meta_modules = get_identifier ("V1_MODU");
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meta_symtab = get_identifier ("V1_SYMT");
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meta_info = get_identifier ("V1_INFO");
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meta_proplist = get_identifier ("V1_PLST");
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meta_protocol_extension = get_identifier ("V1_PEXT");
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meta_class_extension = get_identifier ("V1_CEXT");
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meta_const_str = get_identifier ("V1_CSTR");
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}
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static void build_v1_class_template (void);
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static void build_v1_category_template (void);
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static void build_v1_protocol_template (void);
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static void next_runtime_01_initialize (void)
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{
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tree type;
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#ifdef OBJCPLUS
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/* For all NeXT objc ABIs -fobjc-call-cxx-cdtors is on by
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default. */
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if (!global_options_set.x_flag_objc_call_cxx_cdtors)
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global_options.x_flag_objc_call_cxx_cdtors = 1;
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#endif
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/* Set up attributes to be attached to the meta-data so that they
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will be placed in the correct sections. */
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next_runtime_abi_01_init_metadata_attributes ();
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if (flag_objc_abi >= 1)
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objc_prop_list_ptr = build_pointer_type (xref_tag (RECORD_TYPE,
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get_identifier ("_prop_list_t")));
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/* Declare type of selector-objects that represent an operation
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name. */
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/* `struct objc_selector *' */
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objc_selector_type = build_pointer_type (xref_tag (RECORD_TYPE,
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get_identifier (TAG_SELECTOR)));
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build_v1_class_template ();
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build_super_template ();
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build_v1_protocol_template ();
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build_v1_category_template ();
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/* NB: In order to call one of the ..._stret (struct-returning)
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functions, the function *MUST* first be cast to a signature that
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corresponds to the actual ObjC method being invoked. This is
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what is done by the build_objc_method_call() routine below. */
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/* id objc_msgSend (id, SEL, ...); */
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/* id objc_msgSendNonNil (id, SEL, ...); */
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/* id objc_msgSend_stret (id, SEL, ...); */
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/* id objc_msgSendNonNil_stret (id, SEL, ...); */
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type = build_varargs_function_type_list (objc_object_type,
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objc_object_type,
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objc_selector_type,
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NULL_TREE);
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umsg_decl = add_builtin_function (TAG_MSGSEND,
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type, 0, NOT_BUILT_IN,
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NULL, NULL_TREE);
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umsg_nonnil_decl = add_builtin_function (TAG_MSGSEND_NONNIL,
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type, 0, NOT_BUILT_IN,
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NULL, NULL_TREE);
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umsg_stret_decl = add_builtin_function (TAG_MSGSEND_STRET,
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type, 0, NOT_BUILT_IN,
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NULL, NULL_TREE);
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umsg_nonnil_stret_decl = add_builtin_function (TAG_MSGSEND_NONNIL_STRET,
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type, 0, NOT_BUILT_IN,
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NULL, NULL_TREE);
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/* These can throw, because the function that gets called can throw
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in Obj-C++, or could itself call something that can throw even in
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Obj-C. */
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TREE_NOTHROW (umsg_decl) = 0;
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TREE_NOTHROW (umsg_nonnil_decl) = 0;
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TREE_NOTHROW (umsg_stret_decl) = 0;
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TREE_NOTHROW (umsg_nonnil_stret_decl) = 0;
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/* id objc_msgSend_Fast (id, SEL, ...)
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__attribute__ ((hard_coded_address (OFFS_MSGSEND_FAST))); */
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#ifdef OFFS_MSGSEND_FAST
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umsg_fast_decl = add_builtin_function (TAG_MSGSEND_FAST,
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type, 0, NOT_BUILT_IN,
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NULL, NULL_TREE);
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TREE_NOTHROW (umsg_fast_decl) = 0;
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DECL_ATTRIBUTES (umsg_fast_decl)
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= tree_cons (get_identifier ("hard_coded_address"),
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build_int_cst (NULL_TREE, OFFS_MSGSEND_FAST),
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NULL_TREE);
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#else
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/* No direct dispatch available. */
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umsg_fast_decl = umsg_decl;
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#endif
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/* id objc_msgSendSuper (struct objc_super *, SEL, ...); */
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/* id objc_msgSendSuper_stret (struct objc_super *, SEL, ...); */
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type = build_varargs_function_type_list (objc_object_type,
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objc_super_type,
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objc_selector_type,
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NULL_TREE);
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umsg_super_decl = add_builtin_function (TAG_MSGSENDSUPER,
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type, 0, NOT_BUILT_IN,
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NULL, NULL_TREE);
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umsg_super_stret_decl = add_builtin_function (TAG_MSGSENDSUPER_STRET,
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type, 0, NOT_BUILT_IN, 0,
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NULL_TREE);
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TREE_NOTHROW (umsg_super_decl) = 0;
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TREE_NOTHROW (umsg_super_stret_decl) = 0;
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type = build_function_type_list (objc_object_type,
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const_string_type_node,
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NULL_TREE);
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/* id objc_getClass (const char *); */
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objc_get_class_decl
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= add_builtin_function (TAG_GETCLASS, type, 0, NOT_BUILT_IN,
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NULL, NULL_TREE);
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/* id objc_getMetaClass (const char *); */
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objc_get_meta_class_decl
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= add_builtin_function (TAG_GETMETACLASS, type, 0, NOT_BUILT_IN, NULL, NULL_TREE);
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/* This is the type of all of the following functions
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objc_copyStruct(). */
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type = build_function_type_list (void_type_node,
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ptr_type_node,
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const_ptr_type_node,
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ptrdiff_type_node,
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boolean_type_node,
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boolean_type_node,
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NULL_TREE);
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/* Declare the following function:
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void
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objc_copyStruct (void *destination, const void *source,
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ptrdiff_t size, BOOL is_atomic, BOOL has_strong); */
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objc_copyStruct_decl = add_builtin_function ("objc_copyStruct",
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type, 0, NOT_BUILT_IN,
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NULL, NULL_TREE);
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TREE_NOTHROW (objc_copyStruct_decl) = 0;
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objc_getPropertyStruct_decl = NULL_TREE;
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objc_setPropertyStruct_decl = NULL_TREE;
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build_next_objc_exception_stuff ();
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if (flag_objc_exceptions && !flag_objc_sjlj_exceptions)
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using_eh_for_cleanups ();
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lang_hooks.eh_runtime_type = objc_eh_runtime_type;
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lang_hooks.eh_personality = objc_eh_personality;
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}
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/* --- templates --- */
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/* struct _objc_class
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{
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struct _objc_class *isa;
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struct _objc_class *super_class;
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char *name;
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long version;
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long info;
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long instance_size;
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struct _objc_ivar_list *ivars;
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struct _objc_method_list *methods;
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struct objc_cache *cache;
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struct _objc_protocol_list *protocols;
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#if ABI=1
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const char *ivar_layout;
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struct _objc_class_ext *ext;
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#else
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void *sel_id;
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void *gc_object_type;
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#endif
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}; */
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/* The 'sel_id' & 'gc_object_type' fields are not used by the NeXT
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runtime. We generate them for ABI==0 to maintain backward binary
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compatibility. */
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static void
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build_v1_class_template (void)
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{
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tree ptype, decls, *chain = NULL;
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objc_class_template = objc_start_struct (get_identifier (UTAG_CLASS));
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/* struct _objc_class *isa; */
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decls = add_field_decl (build_pointer_type (objc_class_template),
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"isa", &chain);
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/* struct _objc_class *super_class; */
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add_field_decl (build_pointer_type (objc_class_template),
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"super_class", &chain);
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|
|
/* char *name; */
|
|
add_field_decl (string_type_node, "name", &chain);
|
|
|
|
/* long version; */
|
|
add_field_decl (long_integer_type_node, "version", &chain);
|
|
|
|
/* long info; */
|
|
add_field_decl (long_integer_type_node, "info", &chain);
|
|
|
|
/* long instance_size; */
|
|
add_field_decl (long_integer_type_node, "instance_size", &chain);
|
|
|
|
/* struct _objc_ivar_list *ivars; */
|
|
add_field_decl (objc_ivar_list_ptr,"ivars", &chain);
|
|
|
|
/* struct _objc_method_list *methods; */
|
|
add_field_decl (objc_method_list_ptr, "methods", &chain);
|
|
|
|
/* struct objc_cache *cache; */
|
|
ptype = build_pointer_type (xref_tag (RECORD_TYPE,
|
|
get_identifier ("objc_cache")));
|
|
add_field_decl (ptype, "cache", &chain);
|
|
|
|
/* struct _objc_protocol **protocol_list; */
|
|
ptype = build_pointer_type (build_pointer_type
|
|
(xref_tag (RECORD_TYPE,
|
|
get_identifier (UTAG_PROTOCOL))));
|
|
add_field_decl (ptype, "protocol_list", &chain);
|
|
|
|
if (flag_objc_abi >= 1)
|
|
{
|
|
/* const char *ivar_layout; */
|
|
add_field_decl (const_string_type_node, "ivar_layout", &chain);
|
|
|
|
/* struct _objc_class_ext *ext; */
|
|
ptype = build_pointer_type (xref_tag (RECORD_TYPE,
|
|
get_identifier (UTAG_CLASS_EXT)));
|
|
add_field_decl (ptype, "ext", &chain);
|
|
}
|
|
else
|
|
{
|
|
/* void *sel_id; */
|
|
add_field_decl (build_pointer_type (void_type_node), "sel_id", &chain);
|
|
/* void *gc_object_type; */
|
|
add_field_decl (build_pointer_type (void_type_node), "gc_object_type",
|
|
&chain);
|
|
}
|
|
|
|
objc_finish_struct (objc_class_template, decls);
|
|
}
|
|
|
|
/* struct _objc_category
|
|
{
|
|
char *category_name;
|
|
char *class_name;
|
|
struct _objc_method_list *instance_methods;
|
|
struct _objc_method_list *class_methods;
|
|
struct _objc_protocol_list *protocols;
|
|
#if ABI=1
|
|
uint32_t size; // sizeof (struct _objc_category)
|
|
struct _objc_property_list *instance_properties; // category's own @property decl.
|
|
#endif
|
|
}; */
|
|
|
|
static void
|
|
build_v1_category_template (void)
|
|
{
|
|
tree ptype, decls, *chain = NULL;
|
|
|
|
objc_category_template = objc_start_struct (get_identifier (UTAG_CATEGORY));
|
|
|
|
/* char *category_name; */
|
|
decls = add_field_decl (string_type_node, "category_name", &chain);
|
|
|
|
/* char *class_name; */
|
|
add_field_decl (string_type_node, "class_name", &chain);
|
|
|
|
/* struct _objc_method_list *instance_methods; */
|
|
add_field_decl (objc_method_list_ptr, "instance_methods", &chain);
|
|
|
|
/* struct _objc_method_list *class_methods; */
|
|
add_field_decl (objc_method_list_ptr, "class_methods", &chain);
|
|
|
|
/* struct _objc_protocol **protocol_list; */
|
|
ptype = build_pointer_type (build_pointer_type (objc_protocol_template));
|
|
add_field_decl (ptype, "protocol_list", &chain);
|
|
|
|
if (flag_objc_abi >= 1)
|
|
{
|
|
add_field_decl (integer_type_node, "size", &chain);
|
|
|
|
/* struct _objc_property_list *instance_properties;
|
|
This field describes a category's @property declarations.
|
|
Properties from inherited protocols are not included. */
|
|
ptype = build_pointer_type (xref_tag (RECORD_TYPE,
|
|
get_identifier (UTAG_PROPERTY_LIST)));
|
|
add_field_decl (ptype, "instance_properties", &chain);
|
|
}
|
|
objc_finish_struct (objc_category_template, decls);
|
|
}
|
|
|
|
/* Begin code generation for protocols...
|
|
Modified for ObjC #1 extensions. */
|
|
|
|
/* struct _objc_protocol
|
|
{
|
|
#if ABI=1
|
|
struct _objc_protocol_extension *isa;
|
|
#else
|
|
struct _objc_class *isa;
|
|
#endif
|
|
|
|
char *protocol_name;
|
|
struct _objc_protocol **protocol_list;
|
|
struct _objc__method_prototype_list *instance_methods;
|
|
struct _objc__method_prototype_list *class_methods;
|
|
}; */
|
|
|
|
static void
|
|
build_v1_protocol_template (void)
|
|
{
|
|
tree ptype, decls, *chain = NULL;
|
|
|
|
objc_protocol_template = objc_start_struct (get_identifier (UTAG_PROTOCOL));
|
|
|
|
if (flag_objc_abi >= 1)
|
|
/* struct _objc_protocol_extension *isa; */
|
|
ptype = build_pointer_type (xref_tag (RECORD_TYPE,
|
|
get_identifier (UTAG_PROTOCOL_EXT)));
|
|
else
|
|
/* struct _objc_class *isa; */
|
|
ptype = build_pointer_type (xref_tag (RECORD_TYPE,
|
|
get_identifier (UTAG_CLASS)));
|
|
|
|
decls = add_field_decl (ptype, "isa", &chain);
|
|
|
|
/* char *protocol_name; */
|
|
add_field_decl (string_type_node, "protocol_name", &chain);
|
|
|
|
/* struct _objc_protocol **protocol_list; */
|
|
ptype = build_pointer_type (build_pointer_type (objc_protocol_template));
|
|
add_field_decl (ptype, "protocol_list", &chain);
|
|
|
|
/* struct _objc__method_prototype_list *instance_methods; */
|
|
add_field_decl (objc_method_proto_list_ptr, "instance_methods", &chain);
|
|
|
|
/* struct _objc__method_prototype_list *class_methods; */
|
|
add_field_decl (objc_method_proto_list_ptr, "class_methods", &chain);
|
|
|
|
objc_finish_struct (objc_protocol_template, decls);
|
|
}
|
|
|
|
/* --- names, decls identifers --- */
|
|
|
|
static tree
|
|
next_runtime_abi_01_super_superclassfield_id (void)
|
|
{
|
|
if (!super_superclassfield_id)
|
|
super_superclassfield_id = get_identifier ("super_class");
|
|
return super_superclassfield_id;
|
|
}
|
|
|
|
static tree
|
|
next_runtime_abi_01_class_decl (tree klass)
|
|
{
|
|
tree decl;
|
|
char buf[BUFSIZE];
|
|
snprintf (buf, BUFSIZE, "_OBJC_Class_%s",
|
|
IDENTIFIER_POINTER (CLASS_NAME (klass)));
|
|
decl = start_var_decl (objc_class_template, buf);
|
|
OBJCMETA (decl, objc_meta, meta_class);
|
|
return decl;
|
|
}
|
|
|
|
static tree
|
|
next_runtime_abi_01_metaclass_decl (tree klass)
|
|
{
|
|
tree decl;
|
|
char buf[BUFSIZE];
|
|
snprintf (buf, BUFSIZE, "_OBJC_MetaClass_%s",
|
|
IDENTIFIER_POINTER (CLASS_NAME (klass)));
|
|
decl = start_var_decl (objc_class_template, buf);
|
|
OBJCMETA (decl, objc_meta, meta_metaclass);
|
|
return decl;
|
|
}
|
|
|
|
static tree
|
|
next_runtime_abi_01_category_decl (tree klass)
|
|
{
|
|
tree decl;
|
|
char buf[BUFSIZE];
|
|
snprintf (buf, BUFSIZE, "_OBJC_Category_%s_on_%s",
|
|
IDENTIFIER_POINTER (CLASS_SUPER_NAME (klass)),
|
|
IDENTIFIER_POINTER (CLASS_NAME (klass)));
|
|
decl = start_var_decl (objc_category_template, buf);
|
|
OBJCMETA (decl, objc_meta, meta_category);
|
|
return decl;
|
|
}
|
|
|
|
static tree
|
|
next_runtime_abi_01_protocol_decl (tree p)
|
|
{
|
|
tree decl;
|
|
char buf[BUFSIZE];
|
|
|
|
/* static struct _objc_protocol _OBJC_Protocol_<mumble>; */
|
|
|
|
snprintf (buf, BUFSIZE, "_OBJC_Protocol_%s",
|
|
IDENTIFIER_POINTER (PROTOCOL_NAME (p)));
|
|
decl = start_var_decl (objc_protocol_template, buf);
|
|
OBJCMETA (decl, objc_meta, meta_protocol);
|
|
return decl;
|
|
}
|
|
|
|
static tree
|
|
next_runtime_abi_01_string_decl (tree type, const char *name, string_section where)
|
|
{
|
|
tree var = start_var_decl (type, name);
|
|
switch (where)
|
|
{
|
|
case class_names:
|
|
OBJCMETA (var, objc_meta, meta_class_name);
|
|
break;
|
|
case meth_var_names:
|
|
OBJCMETA (var, objc_meta, meta_meth_name);
|
|
break;
|
|
case meth_var_types:
|
|
OBJCMETA (var, objc_meta, meta_meth_type);
|
|
break;
|
|
case prop_names_attr:
|
|
OBJCMETA (var, objc_meta, meta_prop_name_attr);
|
|
break;
|
|
default:
|
|
OBJCMETA (var, objc_meta, meta_base);
|
|
break;
|
|
}
|
|
return var;
|
|
}
|
|
|
|
/* --- entry --- */
|
|
|
|
static GTY(()) int class_reference_idx;
|
|
|
|
static tree
|
|
build_class_reference_decl (void)
|
|
{
|
|
tree decl;
|
|
char buf[BUFSIZE];
|
|
|
|
sprintf (buf, "_OBJC_ClassRefs_%d", class_reference_idx++);
|
|
decl = start_var_decl (objc_class_type, buf);
|
|
|
|
return decl;
|
|
}
|
|
|
|
static tree
|
|
next_runtime_abi_01_get_class_reference (tree ident)
|
|
{
|
|
if (!flag_zero_link)
|
|
{
|
|
tree *chain;
|
|
tree decl;
|
|
|
|
for (chain = &cls_ref_chain; *chain; chain = &TREE_CHAIN (*chain))
|
|
if (TREE_VALUE (*chain) == ident)
|
|
{
|
|
if (! TREE_PURPOSE (*chain))
|
|
TREE_PURPOSE (*chain) = build_class_reference_decl ();
|
|
|
|
return TREE_PURPOSE (*chain);
|
|
}
|
|
|
|
decl = build_class_reference_decl ();
|
|
*chain = tree_cons (decl, ident, NULL_TREE);
|
|
return decl;
|
|
}
|
|
else
|
|
{
|
|
tree params;
|
|
|
|
add_class_reference (ident);
|
|
|
|
params = build_tree_list (NULL_TREE,
|
|
my_build_string_pointer
|
|
(IDENTIFIER_LENGTH (ident) + 1,
|
|
IDENTIFIER_POINTER (ident)));
|
|
|
|
return build_function_call (input_location, objc_get_class_decl, params);
|
|
}
|
|
}
|
|
|
|
/* Used by build_function_type_for_method. Append the types for
|
|
receiver & _cmd at the start of a method argument list to ARGTYPES.
|
|
CONTEXT is either METHOD_DEF or METHOD_REF, saying whether we are
|
|
trying to define a method or call one. SUPERFLAG says this is for a
|
|
send to super. METH may be NULL, in the case that there is no
|
|
prototype. */
|
|
|
|
static void
|
|
next_runtime_abi_01_get_arg_type_list_base (VEC(tree,gc) **argtypes, tree meth,
|
|
int context, int superflag)
|
|
{
|
|
tree receiver_type;
|
|
|
|
if (superflag)
|
|
receiver_type = objc_super_type;
|
|
else if (context == METHOD_DEF && TREE_CODE (meth) == INSTANCE_METHOD_DECL)
|
|
receiver_type = objc_instance_type;
|
|
else
|
|
receiver_type = objc_object_type;
|
|
|
|
VEC_safe_push (tree, gc, *argtypes, receiver_type);
|
|
/* Selector type - will eventually change to `int'. */
|
|
VEC_safe_push (tree, gc, *argtypes, objc_selector_type);
|
|
}
|
|
|
|
static tree
|
|
next_runtime_abi_01_receiver_is_class_object (tree receiver)
|
|
{
|
|
if (TREE_CODE (receiver) == VAR_DECL
|
|
&& IS_CLASS (TREE_TYPE (receiver)))
|
|
{
|
|
/* The receiver is a variable created by build_class_reference_decl. */
|
|
tree chain = cls_ref_chain ;
|
|
/* Look up the identifier in the relevant chain. */
|
|
for (; chain; chain = TREE_CHAIN (chain))
|
|
if (TREE_PURPOSE (chain) == receiver)
|
|
return TREE_VALUE (chain);
|
|
}
|
|
return NULL_TREE;
|
|
}
|
|
|
|
static tree
|
|
build_selector_reference_decl (tree ident)
|
|
{
|
|
tree decl;
|
|
char *t, buf[BUFSIZE];
|
|
|
|
snprintf (buf, BUFSIZE, "_OBJC_SelRef_%s", IDENTIFIER_POINTER (ident));
|
|
t = buf;
|
|
while (*t)
|
|
{
|
|
if (*t==':')
|
|
*t = '$'; /* Underscore would clash between foo:bar and foo_bar. */
|
|
t++;
|
|
}
|
|
decl = start_var_decl (objc_selector_type, buf);
|
|
OBJCMETA (decl, objc_meta, meta_sel_refs);
|
|
return decl;
|
|
}
|
|
|
|
static tree
|
|
next_runtime_abi_01_build_selector_reference (location_t loc ATTRIBUTE_UNUSED,
|
|
tree ident,
|
|
tree proto ATTRIBUTE_UNUSED)
|
|
{
|
|
tree *chain = &sel_ref_chain;
|
|
tree expr;
|
|
|
|
while (*chain)
|
|
{
|
|
if (TREE_VALUE (*chain) == ident)
|
|
return TREE_PURPOSE (*chain);
|
|
|
|
chain = &TREE_CHAIN (*chain);
|
|
}
|
|
|
|
expr = build_selector_reference_decl (ident);
|
|
|
|
*chain = tree_cons (expr, ident, NULL_TREE);
|
|
|
|
return expr;
|
|
}
|
|
|
|
/* Build a tree expression to send OBJECT the operation SELECTOR,
|
|
looking up the method on object LOOKUP_OBJECT (often same as OBJECT),
|
|
assuming the method has prototype METHOD_PROTOTYPE.
|
|
(That is an INSTANCE_METHOD_DECL or CLASS_METHOD_DECL.)
|
|
LOC is the location of the expression to build.
|
|
Use METHOD_PARAMS as list of args to pass to the method.
|
|
If SUPER_FLAG is nonzero, we look up the superclass's method. */
|
|
|
|
static tree
|
|
build_objc_method_call (location_t loc, int super_flag, tree method_prototype,
|
|
tree lookup_object, tree selector,
|
|
tree method_params)
|
|
{
|
|
tree sender, sender_cast, method, t;
|
|
tree rcv_p = (super_flag ? objc_super_type : objc_object_type);
|
|
VEC(tree, gc) *parms;
|
|
unsigned nparm = (method_params ? list_length (method_params) : 0);
|
|
|
|
/* If a prototype for the method to be called exists, then cast
|
|
the sender's return type and arguments to match that of the method.
|
|
Otherwise, leave sender as is. */
|
|
tree ret_type
|
|
= (method_prototype
|
|
? TREE_VALUE (TREE_TYPE (method_prototype))
|
|
: objc_object_type);
|
|
tree ftype = build_function_type_for_method (ret_type, method_prototype,
|
|
METHOD_REF, super_flag);
|
|
|
|
if (method_prototype && METHOD_TYPE_ATTRIBUTES (method_prototype))
|
|
ftype = build_type_attribute_variant (ftype,
|
|
METHOD_TYPE_ATTRIBUTES
|
|
(method_prototype));
|
|
|
|
sender_cast = build_pointer_type (ftype);
|
|
|
|
lookup_object = build_c_cast (loc, rcv_p, lookup_object);
|
|
|
|
/* Use SAVE_EXPR to avoid evaluating the receiver twice. */
|
|
lookup_object = save_expr (lookup_object);
|
|
|
|
/* Param list + 2 slots for object and selector. */
|
|
parms = VEC_alloc (tree, gc, nparm + 2);
|
|
|
|
/* If we are returning a struct in memory, and the address
|
|
of that memory location is passed as a hidden first
|
|
argument, then change which messenger entry point this
|
|
expr will call. NB: Note that sender_cast remains
|
|
unchanged (it already has a struct return type). */
|
|
if (!targetm.calls.struct_value_rtx (0, 0)
|
|
&& (TREE_CODE (ret_type) == RECORD_TYPE
|
|
|| TREE_CODE (ret_type) == UNION_TYPE)
|
|
&& targetm.calls.return_in_memory (ret_type, 0))
|
|
sender = (super_flag ? umsg_super_stret_decl
|
|
: flag_nil_receivers ? umsg_stret_decl
|
|
: umsg_nonnil_stret_decl);
|
|
else
|
|
sender = (super_flag ? umsg_super_decl
|
|
: (flag_nil_receivers ? (flag_objc_direct_dispatch
|
|
? umsg_fast_decl
|
|
: umsg_decl)
|
|
: umsg_nonnil_decl));
|
|
method = build_fold_addr_expr_loc (loc, sender);
|
|
|
|
/* Pass the object to the method. */
|
|
VEC_quick_push (tree, parms, lookup_object);
|
|
/* Pass the selector to the method. */
|
|
VEC_quick_push (tree, parms, selector);
|
|
/* Now append the remainder of the parms. */
|
|
if (nparm)
|
|
for (; method_params; method_params = TREE_CHAIN (method_params))
|
|
VEC_quick_push (tree, parms, TREE_VALUE (method_params));
|
|
|
|
/* Build an obj_type_ref, with the correct cast for the method call. */
|
|
t = build3 (OBJ_TYPE_REF, sender_cast, method,
|
|
lookup_object, size_zero_node);
|
|
t = build_function_call_vec (loc, t, parms, NULL);
|
|
VEC_free (tree, gc, parms);
|
|
return t;
|
|
}
|
|
|
|
static tree
|
|
next_runtime_abi_01_build_objc_method_call (location_t loc,
|
|
tree method_prototype,
|
|
tree receiver,
|
|
tree rtype ATTRIBUTE_UNUSED,
|
|
tree sel_name,
|
|
tree method_params,
|
|
int super)
|
|
{
|
|
tree selector = next_runtime_abi_01_build_selector_reference (loc, sel_name,
|
|
NULL_TREE);
|
|
|
|
return build_objc_method_call (loc, super, method_prototype,
|
|
receiver, selector, method_params);
|
|
}
|
|
|
|
static tree
|
|
next_runtime_abi_01_get_protocol_reference (location_t loc, tree p)
|
|
{
|
|
tree expr;
|
|
|
|
if (!PROTOCOL_FORWARD_DECL (p))
|
|
PROTOCOL_FORWARD_DECL (p) = next_runtime_abi_01_protocol_decl (p);
|
|
|
|
expr = build_unary_op (loc, ADDR_EXPR, PROTOCOL_FORWARD_DECL (p), 0);
|
|
return convert (objc_protocol_type, expr);
|
|
}
|
|
|
|
/* For ABI 0/1 and IVAR is just a fixed offset in the class struct. */
|
|
|
|
static tree
|
|
next_runtime_abi_01_build_ivar_ref (location_t loc ATTRIBUTE_UNUSED,
|
|
tree base, tree id)
|
|
{
|
|
return objc_build_component_ref (base, id);
|
|
}
|
|
|
|
/* We build super class references as we need them (but keep them once
|
|
built for the sake of efficiency). */
|
|
|
|
static tree
|
|
next_runtime_abi_01_get_class_super_ref (location_t loc ATTRIBUTE_UNUSED,
|
|
struct imp_entry *imp, bool inst_meth)
|
|
{
|
|
if (inst_meth)
|
|
{
|
|
if (!ucls_super_ref)
|
|
ucls_super_ref =
|
|
objc_build_component_ref (imp->class_decl,
|
|
get_identifier ("super_class"));
|
|
return ucls_super_ref;
|
|
}
|
|
else
|
|
{
|
|
if (!uucls_super_ref)
|
|
uucls_super_ref =
|
|
objc_build_component_ref (imp->meta_decl,
|
|
get_identifier ("super_class"));
|
|
return uucls_super_ref;
|
|
}
|
|
}
|
|
|
|
static tree
|
|
next_runtime_abi_01_get_category_super_ref (location_t loc ATTRIBUTE_UNUSED,
|
|
struct imp_entry *imp, bool inst_meth)
|
|
{
|
|
tree super_name = CLASS_SUPER_NAME (imp->imp_template);
|
|
tree super_class;
|
|
|
|
if (!flag_zero_link)
|
|
{
|
|
super_class = objc_get_class_reference (super_name);
|
|
|
|
if (!inst_meth)
|
|
|
|
/* If we are in a class method, we must retrieve the
|
|
_metaclass_ for the current class, pointed at by
|
|
the class's "isa" pointer. The following assumes that
|
|
"isa" is the first ivar in a class (which it must be). */
|
|
super_class =
|
|
build_indirect_ref (input_location,
|
|
build_c_cast (input_location,
|
|
build_pointer_type (objc_class_type),
|
|
super_class),
|
|
RO_UNARY_STAR);
|
|
return super_class;
|
|
}
|
|
|
|
/* else do it the slow way. */
|
|
add_class_reference (super_name);
|
|
super_class = (inst_meth ? objc_get_class_decl : objc_get_meta_class_decl);
|
|
super_name = my_build_string_pointer (IDENTIFIER_LENGTH (super_name) + 1,
|
|
IDENTIFIER_POINTER (super_name));
|
|
/* super_class = objc_get{Meta}Class("CLASS_SUPER_NAME"); */
|
|
return build_function_call (input_location,
|
|
super_class,
|
|
build_tree_list (NULL_TREE, super_name));
|
|
}
|
|
|
|
static bool
|
|
next_runtime_abi_01_setup_const_string_class_decl (void)
|
|
{
|
|
if (!constant_string_global_id)
|
|
{
|
|
/* Hopefully, this should not represent a serious limitation. */
|
|
char buf[BUFSIZE];
|
|
snprintf (buf, BUFSIZE, "_%sClassReference", constant_string_class_name);
|
|
constant_string_global_id = get_identifier (buf);
|
|
}
|
|
|
|
string_class_decl = lookup_name (constant_string_global_id);
|
|
|
|
return (string_class_decl != NULL_TREE);
|
|
}
|
|
|
|
static tree
|
|
next_runtime_abi_01_build_const_string_constructor (location_t loc, tree string,
|
|
int length)
|
|
{
|
|
tree constructor, fields, var;
|
|
VEC(constructor_elt,gc) *v = NULL;
|
|
|
|
/* NeXT: (NSConstantString *) & ((__builtin_ObjCString) { isa, string, length }) */
|
|
fields = TYPE_FIELDS (internal_const_str_type);
|
|
CONSTRUCTOR_APPEND_ELT (v, fields,
|
|
build_unary_op (loc, ADDR_EXPR, string_class_decl, 0));
|
|
|
|
fields = DECL_CHAIN (fields);
|
|
CONSTRUCTOR_APPEND_ELT (v, fields,
|
|
build_unary_op (loc, ADDR_EXPR, string, 1));
|
|
|
|
/* ??? check if this should be long. */
|
|
fields = DECL_CHAIN (fields);
|
|
CONSTRUCTOR_APPEND_ELT (v, fields, build_int_cst (NULL_TREE, length));
|
|
constructor = objc_build_constructor (internal_const_str_type, v);
|
|
|
|
var = build_decl (input_location, CONST_DECL, NULL, TREE_TYPE (constructor));
|
|
DECL_INITIAL (var) = constructor;
|
|
TREE_STATIC (var) = 1;
|
|
DECL_CONTEXT (var) = NULL;
|
|
OBJCMETA (var, objc_meta, meta_const_str);
|
|
return var;
|
|
}
|
|
|
|
/* --- metadata templates --- */
|
|
|
|
/* This routine builds the following type:
|
|
struct _prop_t {
|
|
const char * const name; // property name
|
|
const char * const attributes; // comma-delimited, encoded,
|
|
// property attributes
|
|
};
|
|
*/
|
|
|
|
static GTY(()) tree objc_v1_property_template;
|
|
|
|
static tree
|
|
build_v1_property_template (void)
|
|
{
|
|
tree prop_record;
|
|
tree decls, *chain = NULL;
|
|
|
|
prop_record = objc_start_struct (get_identifier ("_prop_t"));
|
|
/* const char * name */
|
|
decls = add_field_decl (string_type_node, "name", &chain);
|
|
|
|
/* const char * attribute */
|
|
add_field_decl (string_type_node, "attribute", &chain);
|
|
|
|
objc_finish_struct (prop_record, decls);
|
|
return prop_record;
|
|
}
|
|
|
|
/* Build the following type:
|
|
|
|
struct _objc_protocol_extension
|
|
{
|
|
uint32_t size; // sizeof (struct _objc_protocol_extension)
|
|
struct objc_method_list *optional_instance_methods;
|
|
struct objc_method_list *optional_class_methods;
|
|
struct objc_prop_list *instance_properties;
|
|
}
|
|
*/
|
|
|
|
static GTY(()) tree objc_protocol_extension_template;
|
|
|
|
static void
|
|
build_v1_objc_protocol_extension_template (void)
|
|
{
|
|
tree decls, *chain = NULL;
|
|
|
|
objc_protocol_extension_template =
|
|
objc_start_struct (get_identifier (UTAG_PROTOCOL_EXT));
|
|
|
|
/* uint32_t size; */
|
|
decls = add_field_decl (integer_type_node, "size", &chain);
|
|
|
|
/* struct objc_method_list *optional_instance_methods; */
|
|
add_field_decl (objc_method_list_ptr, "optional_instance_methods", &chain);
|
|
|
|
/* struct objc_method_list *optional_class_methods; */
|
|
add_field_decl (objc_method_list_ptr, "optional_class_methods", &chain);
|
|
|
|
/* struct objc_prop_list *instance_properties; */
|
|
add_field_decl (objc_prop_list_ptr, "instance_properties", &chain);
|
|
|
|
objc_finish_struct (objc_protocol_extension_template, decls);
|
|
}
|
|
|
|
/* This routine build following struct type:
|
|
struct _objc_class_ext
|
|
{
|
|
uint32_t size; // sizeof(struct _objc_class_ext)
|
|
const char *weak_ivar_layout;
|
|
struct _prop_list_t *properties;
|
|
}
|
|
*/
|
|
|
|
static GTY(()) tree objc_class_ext_template;
|
|
|
|
static void
|
|
build_objc_class_ext_template (void)
|
|
{
|
|
tree ptrt, decls, *chain = NULL;
|
|
|
|
objc_class_ext_template = objc_start_struct (get_identifier (UTAG_CLASS_EXT));
|
|
|
|
/* uint32_t size; */
|
|
decls = add_field_decl (integer_type_node, "size", &chain);
|
|
|
|
/* const char *weak_ivar_layout; */
|
|
add_field_decl (const_string_type_node, "weak_ivar_layout", &chain);
|
|
|
|
/* struct _prop_list_t *properties; */
|
|
ptrt = build_pointer_type (xref_tag (RECORD_TYPE,
|
|
get_identifier(UTAG_PROPERTY_LIST)));
|
|
add_field_decl (ptrt, "properties", &chain);
|
|
|
|
objc_finish_struct (objc_class_ext_template, decls);
|
|
}
|
|
|
|
static void
|
|
build_metadata_templates (void)
|
|
{
|
|
|
|
if (!objc_method_template)
|
|
objc_method_template = build_method_template ();
|
|
|
|
|
|
|
|
}
|
|
|
|
/* --- emit metadata --- */
|
|
|
|
static tree
|
|
generate_v1_meth_descriptor_table (tree chain, tree protocol,
|
|
const char *prefix, tree attr)
|
|
{
|
|
tree method_list_template, initlist, decl;
|
|
int size;
|
|
VEC(constructor_elt,gc) *v = NULL;
|
|
char buf[BUFSIZE];
|
|
|
|
if (!chain || !prefix)
|
|
return NULL_TREE;
|
|
|
|
if (!objc_method_prototype_template)
|
|
objc_method_prototype_template = build_method_prototype_template ();
|
|
|
|
size = list_length (chain);
|
|
method_list_template =
|
|
build_method_prototype_list_template (objc_method_prototype_template,
|
|
size);
|
|
snprintf (buf, BUFSIZE, "%s_%s", prefix,
|
|
IDENTIFIER_POINTER (PROTOCOL_NAME (protocol)));
|
|
|
|
decl = start_var_decl (method_list_template, buf);
|
|
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, size));
|
|
initlist =
|
|
build_descriptor_table_initializer (objc_method_prototype_template,
|
|
chain);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, initlist);
|
|
/* Get into the right section. */
|
|
OBJCMETA (decl, objc_meta, attr);
|
|
finish_var_decl (decl, objc_build_constructor (method_list_template, v));
|
|
return decl;
|
|
}
|
|
|
|
/* Build protocol ext =
|
|
{size, opt_instance_meth, opt_class_meth, instance_props};
|
|
or NULL_TREE if none are present. */
|
|
|
|
static tree
|
|
generate_v1_objc_protocol_extension (tree proto_interface,
|
|
tree opt_instance_meth,
|
|
tree opt_class_meth,
|
|
tree instance_props)
|
|
{
|
|
int size;
|
|
location_t loc;
|
|
VEC(constructor_elt,gc) *v = NULL;
|
|
tree decl, expr;
|
|
char buf[BUFSIZE];
|
|
|
|
/* If there are no extensions, then don't bother... */
|
|
if (!opt_instance_meth && !opt_class_meth && !instance_props)
|
|
return NULL_TREE;
|
|
|
|
if (!objc_protocol_extension_template)
|
|
build_v1_objc_protocol_extension_template ();
|
|
|
|
/* uint32_t size */
|
|
size = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_protocol_extension_template));
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, size));
|
|
|
|
/* Try for meaningful diagnostics. */
|
|
loc = DECL_SOURCE_LOCATION (PROTOCOL_FORWARD_DECL (proto_interface));
|
|
|
|
/* struct objc_method_list *optional_instance_methods; */
|
|
if (opt_instance_meth)
|
|
expr = convert (objc_method_list_ptr,
|
|
build_unary_op (loc, ADDR_EXPR, opt_instance_meth, 0));
|
|
else
|
|
expr = convert (objc_method_list_ptr, null_pointer_node);
|
|
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
|
|
|
|
/* struct objc_method_list *optional_class_methods; */
|
|
if (opt_class_meth)
|
|
expr = convert (objc_method_list_ptr,
|
|
build_unary_op (loc, ADDR_EXPR, opt_class_meth, 0));
|
|
else
|
|
expr = convert (objc_method_list_ptr, null_pointer_node);
|
|
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
|
|
/* struct objc_prop_list *instance_properties; */
|
|
if (instance_props)
|
|
expr = convert (objc_prop_list_ptr,
|
|
build_unary_op (loc, ADDR_EXPR, instance_props, 0));
|
|
else
|
|
expr = convert (objc_prop_list_ptr, null_pointer_node);
|
|
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
|
|
snprintf (buf, BUFSIZE, "_OBJC_ProtocolExt_%s",
|
|
IDENTIFIER_POINTER (PROTOCOL_NAME (proto_interface)));
|
|
|
|
decl = start_var_decl (objc_protocol_extension_template, buf);
|
|
expr = objc_build_constructor (TREE_TYPE (decl), v);
|
|
OBJCMETA (decl, objc_meta, meta_protocol_extension);
|
|
finish_var_decl (decl, expr);
|
|
return decl;
|
|
}
|
|
|
|
/* This routine builds the following type:
|
|
struct _prop_list_t {
|
|
uint32_t entsize; // sizeof (struct _prop_t)
|
|
uint32_t prop_count;
|
|
struct _prop_t prop_list [prop_count];
|
|
}
|
|
*/
|
|
|
|
static tree
|
|
build_v1_property_list_template (tree list_type, int size)
|
|
{
|
|
tree property_list_t_record;
|
|
tree array_type, decls, *chain = NULL;
|
|
|
|
/* anonymous. */
|
|
property_list_t_record = objc_start_struct (NULL_TREE);
|
|
|
|
/* uint32_t const entsize */
|
|
decls = add_field_decl (integer_type_node, "entsize", &chain);
|
|
|
|
/* int prop_count */
|
|
add_field_decl (integer_type_node, "prop_count", &chain);
|
|
|
|
/* struct _prop_t prop_list[]; */
|
|
array_type = build_sized_array_type (list_type, size);
|
|
add_field_decl (array_type, "prop_list", &chain);
|
|
|
|
objc_finish_struct (property_list_t_record, decls);
|
|
return property_list_t_record;
|
|
}
|
|
|
|
/* This routine builds the initializer list to initialize the
|
|
'struct _prop_t prop_list[]' field of 'struct _prop_list_t' meta-data. */
|
|
|
|
static tree
|
|
build_v1_property_table_initializer (tree type, tree context)
|
|
{
|
|
tree x;
|
|
VEC(constructor_elt,gc) *inits = NULL;
|
|
|
|
if (TREE_CODE (context) == PROTOCOL_INTERFACE_TYPE)
|
|
x = CLASS_PROPERTY_DECL (context);
|
|
else
|
|
x = IMPL_PROPERTY_DECL (context);
|
|
|
|
for (; x; x = TREE_CHAIN (x))
|
|
{
|
|
VEC(constructor_elt,gc) *elemlist = NULL;
|
|
tree attribute, name_ident = PROPERTY_NAME (x);
|
|
|
|
CONSTRUCTOR_APPEND_ELT (elemlist, NULL_TREE,
|
|
add_objc_string (name_ident, prop_names_attr));
|
|
|
|
attribute = objc_v2_encode_prop_attr (x);
|
|
CONSTRUCTOR_APPEND_ELT (elemlist, NULL_TREE,
|
|
add_objc_string (attribute, prop_names_attr));
|
|
|
|
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE,
|
|
objc_build_constructor (type, elemlist));
|
|
}
|
|
|
|
return objc_build_constructor (build_array_type (type, 0),inits);
|
|
}
|
|
|
|
/* This routine builds the 'struct _prop_list_t' variable declaration and
|
|
initializes it with its initializer list. TYPE is 'struct _prop_list_t',
|
|
NAME is the internal name of this variable, SIZE is number of properties
|
|
for this class and LIST is the initializer list for its 'prop_list' field. */
|
|
|
|
static tree
|
|
generate_v1_property_table (tree context, tree klass_ctxt)
|
|
{
|
|
tree x, decl, initlist, property_list_template;
|
|
bool is_proto = false;
|
|
VEC(constructor_elt,gc) *inits = NULL;
|
|
int init_val, size = 0;
|
|
char buf[BUFSIZE];
|
|
|
|
if (context)
|
|
{
|
|
gcc_assert (TREE_CODE (context) == PROTOCOL_INTERFACE_TYPE);
|
|
x = CLASS_PROPERTY_DECL (context);
|
|
is_proto = true;
|
|
}
|
|
else
|
|
x = IMPL_PROPERTY_DECL (klass_ctxt);
|
|
|
|
for (; x; x = TREE_CHAIN (x))
|
|
size++;
|
|
|
|
if (size == 0)
|
|
return NULL_TREE;
|
|
|
|
if (!objc_v1_property_template)
|
|
objc_v1_property_template = build_v1_property_template ();
|
|
|
|
property_list_template =
|
|
build_v1_property_list_template (objc_v1_property_template,
|
|
size);
|
|
initlist = build_v1_property_table_initializer (objc_v1_property_template,
|
|
is_proto ? context
|
|
: klass_ctxt);
|
|
|
|
init_val = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v1_property_template));
|
|
if (is_proto)
|
|
snprintf (buf, BUFSIZE, "_OBJC_ProtocolPropList_%s",
|
|
IDENTIFIER_POINTER (PROTOCOL_NAME (context)));
|
|
else
|
|
snprintf (buf, BUFSIZE, "_OBJC_ClassPropList_%s",
|
|
IDENTIFIER_POINTER (CLASS_NAME (klass_ctxt)));
|
|
|
|
decl = start_var_decl (property_list_template, buf);
|
|
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, build_int_cst (NULL_TREE, init_val));
|
|
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, build_int_cst (NULL_TREE, size));
|
|
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, initlist);
|
|
x = objc_build_constructor (TREE_TYPE (decl), inits);
|
|
OBJCMETA (decl, objc_meta, meta_proplist);
|
|
finish_var_decl (decl, x);
|
|
return decl;
|
|
}
|
|
|
|
static tree
|
|
generate_v1_protocol_list (tree i_or_p, tree klass_ctxt)
|
|
{
|
|
tree array_type, ptype, refs_decl, lproto, e, plist, attr;
|
|
int size = 0;
|
|
VEC(constructor_elt,gc) *v = NULL;
|
|
char buf[BUFSIZE];
|
|
|
|
switch (TREE_CODE (i_or_p))
|
|
{
|
|
case CLASS_INTERFACE_TYPE:
|
|
case CATEGORY_INTERFACE_TYPE:
|
|
plist = CLASS_PROTOCOL_LIST (i_or_p);
|
|
break;
|
|
case PROTOCOL_INTERFACE_TYPE:
|
|
plist = PROTOCOL_LIST (i_or_p);
|
|
break;
|
|
default:
|
|
gcc_unreachable ();
|
|
}
|
|
|
|
/* Compute size. */
|
|
for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto))
|
|
if (TREE_CODE (TREE_VALUE (lproto)) == PROTOCOL_INTERFACE_TYPE
|
|
&& PROTOCOL_FORWARD_DECL (TREE_VALUE (lproto)))
|
|
size++;
|
|
|
|
/* Build initializer. */
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, 0));
|
|
e = build_int_cst (build_pointer_type (objc_protocol_template), size);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, e);
|
|
|
|
for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto))
|
|
{
|
|
tree pval = TREE_VALUE (lproto);
|
|
|
|
if (TREE_CODE (pval) == PROTOCOL_INTERFACE_TYPE
|
|
&& PROTOCOL_FORWARD_DECL (pval))
|
|
{
|
|
tree fwref = PROTOCOL_FORWARD_DECL (pval);
|
|
location_t loc = DECL_SOURCE_LOCATION (fwref) ;
|
|
e = build_unary_op (loc, ADDR_EXPR, fwref, 0);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, e);
|
|
}
|
|
}
|
|
|
|
/* static struct objc_protocol *refs[n]; */
|
|
switch (TREE_CODE (i_or_p))
|
|
{
|
|
case PROTOCOL_INTERFACE_TYPE:
|
|
snprintf (buf, BUFSIZE, "_OBJC_ProtocolRefs_%s",
|
|
IDENTIFIER_POINTER (PROTOCOL_NAME (i_or_p)));
|
|
attr = meta_proto_ref;
|
|
break;
|
|
case CLASS_INTERFACE_TYPE:
|
|
snprintf (buf, BUFSIZE, "_OBJC_ClassProtocols_%s",
|
|
IDENTIFIER_POINTER (CLASS_NAME (i_or_p)));
|
|
attr = meta_clas_prot;
|
|
break;
|
|
case CATEGORY_INTERFACE_TYPE:
|
|
snprintf (buf, BUFSIZE, "_OBJC_CategoryProtocols_%s_%s",
|
|
IDENTIFIER_POINTER (CLASS_NAME (klass_ctxt)),
|
|
IDENTIFIER_POINTER (CLASS_SUPER_NAME (klass_ctxt)));
|
|
attr = meta_catg_prot;
|
|
break;
|
|
default:
|
|
gcc_unreachable ();
|
|
}
|
|
|
|
ptype = build_pointer_type (objc_protocol_template);
|
|
array_type = build_sized_array_type (ptype, size + 3);
|
|
refs_decl = start_var_decl (array_type, buf);
|
|
|
|
OBJCMETA (refs_decl, objc_meta, attr);
|
|
finish_var_decl (refs_decl,
|
|
objc_build_constructor (TREE_TYPE (refs_decl), v));
|
|
|
|
return refs_decl;
|
|
}
|
|
|
|
static tree
|
|
build_v1_protocol_initializer (tree type, tree protocol_name, tree protocol_list,
|
|
tree inst_methods, tree class_methods,
|
|
tree protocol_ext)
|
|
{
|
|
tree expr, ttyp;
|
|
location_t loc;
|
|
VEC(constructor_elt,gc) *inits = NULL;
|
|
|
|
if (!objc_protocol_extension_template)
|
|
build_v1_objc_protocol_extension_template ();
|
|
|
|
/* TODO: find a better representation of location from the inputs. */
|
|
loc = UNKNOWN_LOCATION;
|
|
ttyp = build_pointer_type (objc_protocol_extension_template);
|
|
/* Instead of jamming the protocol version number into the isa, we pass
|
|
either a pointer to the protocol extension - or NULL. */
|
|
if (protocol_ext)
|
|
expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, protocol_ext, 0));
|
|
else
|
|
expr = convert (ttyp, null_pointer_node);
|
|
|
|
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
|
|
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, protocol_name);
|
|
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, protocol_list);
|
|
|
|
ttyp = objc_method_proto_list_ptr;
|
|
if (inst_methods)
|
|
expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, inst_methods, 0));
|
|
else
|
|
expr = convert (ttyp, null_pointer_node);
|
|
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
|
|
|
|
if (class_methods)
|
|
expr = convert (ttyp, build_unary_op (loc, ADDR_EXPR, class_methods, 0));
|
|
else
|
|
expr = convert (ttyp, null_pointer_node);
|
|
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, expr);
|
|
|
|
return objc_build_constructor (type, inits);
|
|
}
|
|
|
|
/* An updated version of generate_protocols () that emit the protocol
|
|
extension for ABI=1. */
|
|
|
|
/* For each protocol which was referenced either from a @protocol()
|
|
expression, or because a class/category implements it (then a
|
|
pointer to the protocol is stored in the struct describing the
|
|
class/category), we create a statically allocated instance of the
|
|
Protocol class. The code is written in such a way as to generate
|
|
as few Protocol objects as possible; we generate a unique Protocol
|
|
instance for each protocol, and we don't generate a Protocol
|
|
instance if the protocol is never referenced (either from a
|
|
@protocol() or from a class/category implementation). These
|
|
statically allocated objects can be referred to via the static
|
|
(that is, private to this module) symbols _OBJC_PROTOCOL_n.
|
|
|
|
The statically allocated Protocol objects that we generate here
|
|
need to be fixed up at runtime in order to be used: the 'isa'
|
|
pointer of the objects need to be set up to point to the 'Protocol'
|
|
class, as known at runtime.
|
|
|
|
The NeXT runtime fixes up all protocols at program startup time,
|
|
before main() is entered. It uses a low-level trick to look up all
|
|
those symbols, then loops on them and fixes them up. */
|
|
|
|
/* TODO: finish getting rid of passing stuff around in globals. */
|
|
|
|
static GTY(()) tree V1_Protocol_OPT_NST_METHODS_decl;
|
|
static GTY(()) tree V1_Protocol_OPT_CLS_METHODS_decl;
|
|
static GTY(()) tree V1_ProtocolExt_decl;
|
|
static GTY(()) tree V1_Property_decl;
|
|
|
|
static void
|
|
generate_v1_protocols (void)
|
|
{
|
|
tree p;
|
|
|
|
/* If a protocol was directly referenced, pull in indirect references. */
|
|
for (p = protocol_chain; p; p = TREE_CHAIN (p))
|
|
if (PROTOCOL_FORWARD_DECL (p) && PROTOCOL_LIST (p))
|
|
generate_protocol_references (PROTOCOL_LIST (p));
|
|
|
|
for (p = protocol_chain; p; p = TREE_CHAIN (p))
|
|
{
|
|
tree decl, encoding, initlist, protocol_name_expr;
|
|
tree refs_type, refs_decl, refs_expr;
|
|
location_t loc;
|
|
tree nst_methods = PROTOCOL_NST_METHODS (p);
|
|
tree cls_methods = PROTOCOL_CLS_METHODS (p);
|
|
|
|
/* If protocol wasn't referenced, don't generate any code. */
|
|
decl = PROTOCOL_FORWARD_DECL (p);
|
|
|
|
if (!decl)
|
|
continue;
|
|
|
|
/* Make sure we link in the Protocol class. */
|
|
add_class_reference (get_identifier (PROTOCOL_OBJECT_CLASS_NAME));
|
|
|
|
while (nst_methods)
|
|
{
|
|
if (! METHOD_ENCODING (nst_methods))
|
|
{
|
|
encoding = encode_method_prototype (nst_methods);
|
|
METHOD_ENCODING (nst_methods) = encoding;
|
|
}
|
|
nst_methods = TREE_CHAIN (nst_methods);
|
|
}
|
|
|
|
UOBJC_INSTANCE_METHODS_decl =
|
|
generate_v1_meth_descriptor_table (PROTOCOL_NST_METHODS (p), p,
|
|
"_OBJC_ProtocolInstanceMethods",
|
|
meta_proto_nst_meth);
|
|
|
|
while (cls_methods)
|
|
{
|
|
if (! METHOD_ENCODING (cls_methods))
|
|
{
|
|
encoding = encode_method_prototype (cls_methods);
|
|
METHOD_ENCODING (cls_methods) = encoding;
|
|
}
|
|
|
|
cls_methods = TREE_CHAIN (cls_methods);
|
|
}
|
|
|
|
UOBJC_CLASS_METHODS_decl =
|
|
generate_v1_meth_descriptor_table (PROTOCOL_CLS_METHODS (p), p,
|
|
"_OBJC_ProtocolClassMethods",
|
|
meta_proto_cls_meth);
|
|
|
|
/* There should be no optional methods for ABI-0 - but we need to
|
|
check all this here before the lists are made. */
|
|
nst_methods = PROTOCOL_OPTIONAL_NST_METHODS (p);
|
|
while (nst_methods)
|
|
{
|
|
if (! METHOD_ENCODING (nst_methods))
|
|
{
|
|
encoding = encode_method_prototype (nst_methods);
|
|
METHOD_ENCODING (nst_methods) = encoding;
|
|
}
|
|
nst_methods = TREE_CHAIN (nst_methods);
|
|
}
|
|
|
|
V1_Protocol_OPT_NST_METHODS_decl =
|
|
generate_v1_meth_descriptor_table (PROTOCOL_OPTIONAL_NST_METHODS (p), p,
|
|
"_OBJC_OptionalProtocolInstanceMethods",
|
|
meta_proto_nst_meth);
|
|
|
|
cls_methods = PROTOCOL_OPTIONAL_CLS_METHODS (p);
|
|
while (cls_methods)
|
|
{
|
|
if (! METHOD_ENCODING (cls_methods))
|
|
{
|
|
encoding = encode_method_prototype (cls_methods);
|
|
METHOD_ENCODING (cls_methods) = encoding;
|
|
}
|
|
|
|
cls_methods = TREE_CHAIN (cls_methods);
|
|
}
|
|
|
|
V1_Protocol_OPT_CLS_METHODS_decl =
|
|
generate_v1_meth_descriptor_table (PROTOCOL_OPTIONAL_CLS_METHODS (p), p,
|
|
"_OBJC_OptionalProtocolClassMethods",
|
|
meta_proto_cls_meth);
|
|
|
|
if (PROTOCOL_LIST (p))
|
|
refs_decl = generate_v1_protocol_list (p, objc_implementation_context);
|
|
else
|
|
refs_decl = 0;
|
|
|
|
/* static struct objc_protocol _OBJC_PROTOCOL_<mumble>; */
|
|
protocol_name_expr = add_objc_string (PROTOCOL_NAME (p), class_names);
|
|
/* TODO: more locations to be fixed up... */
|
|
loc = UNKNOWN_LOCATION;
|
|
refs_type =
|
|
build_pointer_type (build_pointer_type (objc_protocol_template));
|
|
if (refs_decl)
|
|
refs_expr = convert (refs_type,
|
|
build_unary_op (loc, ADDR_EXPR, refs_decl, 0));
|
|
else
|
|
refs_expr = convert (refs_type, null_pointer_node);
|
|
|
|
if (flag_objc_abi < 1)
|
|
{
|
|
/* Original ABI. */
|
|
initlist =
|
|
build_protocol_initializer (TREE_TYPE (decl),
|
|
protocol_name_expr, refs_expr,
|
|
UOBJC_INSTANCE_METHODS_decl,
|
|
UOBJC_CLASS_METHODS_decl);
|
|
finish_var_decl (decl, initlist);
|
|
continue;
|
|
}
|
|
|
|
/* else - V1 extensions. */
|
|
|
|
V1_Property_decl =
|
|
generate_v1_property_table (p, NULL_TREE);
|
|
|
|
V1_ProtocolExt_decl =
|
|
generate_v1_objc_protocol_extension (p,
|
|
V1_Protocol_OPT_NST_METHODS_decl,
|
|
V1_Protocol_OPT_CLS_METHODS_decl,
|
|
V1_Property_decl);
|
|
|
|
initlist = build_v1_protocol_initializer (TREE_TYPE (decl),
|
|
protocol_name_expr, refs_expr,
|
|
UOBJC_INSTANCE_METHODS_decl,
|
|
UOBJC_CLASS_METHODS_decl,
|
|
V1_ProtocolExt_decl);
|
|
finish_var_decl (decl, initlist);
|
|
}
|
|
}
|
|
|
|
static tree
|
|
generate_dispatch_table (tree chain, const char *name, tree attr)
|
|
{
|
|
tree decl, method_list_template, initlist;
|
|
VEC(constructor_elt,gc) *v = NULL;
|
|
int size;;
|
|
|
|
if (!chain || !name || !(size = list_length (chain)))
|
|
return NULL_TREE;
|
|
|
|
if (!objc_method_template)
|
|
objc_method_template = build_method_template ();
|
|
|
|
method_list_template = build_method_list_template (objc_method_template,
|
|
size);
|
|
initlist = build_dispatch_table_initializer (objc_method_template, chain);
|
|
|
|
decl = start_var_decl (method_list_template, name);
|
|
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, integer_zero_node);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
|
|
build_int_cst (integer_type_node, size));
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, initlist);
|
|
|
|
OBJCMETA (decl, objc_meta, attr);
|
|
finish_var_decl (decl,
|
|
objc_build_constructor (TREE_TYPE (decl), v));
|
|
|
|
return decl;
|
|
}
|
|
|
|
/* Init a category. */
|
|
static tree
|
|
build_v1_category_initializer (tree type, tree cat_name, tree class_name,
|
|
tree inst_methods, tree class_methods,
|
|
tree protocol_list, tree property_list,
|
|
location_t loc)
|
|
{
|
|
tree expr, ltyp;
|
|
VEC(constructor_elt,gc) *v = NULL;
|
|
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, cat_name);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, class_name);
|
|
|
|
ltyp = objc_method_list_ptr;
|
|
if (inst_methods)
|
|
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, inst_methods, 0));
|
|
else
|
|
expr = convert (ltyp, null_pointer_node);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
|
|
|
|
if (class_methods)
|
|
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, class_methods, 0));
|
|
else
|
|
expr = convert (ltyp, null_pointer_node);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
|
|
|
|
/* protocol_list = */
|
|
ltyp = build_pointer_type (build_pointer_type (objc_protocol_template));
|
|
if (protocol_list)
|
|
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, protocol_list, 0));
|
|
else
|
|
expr = convert (ltyp, null_pointer_node);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
|
|
|
|
if (flag_objc_abi >= 1)
|
|
{
|
|
int val = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_category_template));
|
|
expr = build_int_cst (NULL_TREE, val);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
|
|
ltyp = objc_prop_list_ptr;
|
|
if (property_list)
|
|
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, property_list, 0));
|
|
else
|
|
expr = convert (ltyp, null_pointer_node);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
|
|
}
|
|
|
|
return objc_build_constructor (type, v);
|
|
}
|
|
|
|
/* static struct objc_category _OBJC_CATEGORY_<name> = { ... }; */
|
|
/* TODO: get rid of passing stuff around in globals. */
|
|
static void
|
|
generate_v1_category (struct imp_entry *impent)
|
|
{
|
|
tree initlist, cat_name_expr, class_name_expr;
|
|
tree protocol_decl, category, cat_decl;
|
|
tree inst_methods = NULL_TREE, class_methods = NULL_TREE;
|
|
tree cat = impent->imp_context;
|
|
location_t loc;
|
|
char buf[BUFSIZE];
|
|
|
|
cat_decl = impent->class_decl;
|
|
loc = DECL_SOURCE_LOCATION (cat_decl);
|
|
|
|
add_class_reference (CLASS_NAME (cat));
|
|
cat_name_expr = add_objc_string (CLASS_SUPER_NAME (cat), class_names);
|
|
class_name_expr = add_objc_string (CLASS_NAME (cat), class_names);
|
|
|
|
category = lookup_category (impent->imp_template, CLASS_SUPER_NAME (cat));
|
|
|
|
if (category && CLASS_PROTOCOL_LIST (category))
|
|
{
|
|
generate_protocol_references (CLASS_PROTOCOL_LIST (category));
|
|
protocol_decl = generate_v1_protocol_list (category, cat);
|
|
}
|
|
else
|
|
protocol_decl = 0;
|
|
|
|
if (flag_objc_abi >= 1)
|
|
V1_Property_decl = generate_v1_property_table (NULL_TREE, cat);
|
|
else
|
|
V1_Property_decl = NULL_TREE;
|
|
|
|
if (CLASS_NST_METHODS (cat))
|
|
{
|
|
snprintf (buf, BUFSIZE, "_OBJC_CategoryInstanceMethods_%s_%s",
|
|
IDENTIFIER_POINTER (CLASS_NAME (cat)),
|
|
IDENTIFIER_POINTER (CLASS_SUPER_NAME (cat)));
|
|
inst_methods = generate_dispatch_table (CLASS_NST_METHODS (cat), buf,
|
|
meta_cati_meth);
|
|
}
|
|
|
|
if (CLASS_CLS_METHODS (cat))
|
|
{
|
|
snprintf (buf, BUFSIZE, "_OBJC_CategoryClassMethods_%s_%s",
|
|
IDENTIFIER_POINTER (CLASS_NAME (cat)),
|
|
IDENTIFIER_POINTER (CLASS_SUPER_NAME (cat)));
|
|
class_methods = generate_dispatch_table (CLASS_CLS_METHODS (cat), buf,
|
|
meta_catc_meth);
|
|
}
|
|
|
|
initlist = build_v1_category_initializer (TREE_TYPE (cat_decl),
|
|
cat_name_expr, class_name_expr,
|
|
inst_methods, class_methods,
|
|
protocol_decl, V1_Property_decl,
|
|
loc);
|
|
|
|
finish_var_decl (cat_decl, initlist);
|
|
impent->class_decl = cat_decl;
|
|
}
|
|
|
|
/* This routine builds the class extension used by v1 NeXT. */
|
|
|
|
static tree
|
|
generate_objc_class_ext (tree property_list, tree context)
|
|
{
|
|
tree decl, expr, ltyp;
|
|
tree weak_ivar_layout_tree;
|
|
int size;
|
|
location_t loc;
|
|
VEC(constructor_elt,gc) *v = NULL;
|
|
char buf[BUFSIZE];
|
|
|
|
/* TODO: pass the loc in or find it from args. */
|
|
loc = UNKNOWN_LOCATION;
|
|
|
|
/* const char *weak_ivar_layout
|
|
TODO: Figure the ivar layouts out... */
|
|
weak_ivar_layout_tree = NULL_TREE;
|
|
|
|
if (!property_list && !weak_ivar_layout_tree)
|
|
return NULL_TREE;
|
|
|
|
if (!objc_class_ext_template)
|
|
build_objc_class_ext_template ();
|
|
|
|
/* uint32_t size */
|
|
size = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_class_ext_template));
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (NULL_TREE, size));
|
|
|
|
ltyp = const_string_type_node;
|
|
if (weak_ivar_layout_tree)
|
|
expr = convert (ltyp, weak_ivar_layout_tree);
|
|
else
|
|
expr = convert (ltyp, null_pointer_node);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
|
|
|
|
/* struct _prop_list_t *properties; */
|
|
ltyp = objc_prop_list_ptr;
|
|
if (property_list)
|
|
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, property_list, 0));
|
|
else
|
|
expr = convert (ltyp, null_pointer_node);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
|
|
|
|
snprintf (buf, BUFSIZE, "_OBJC_ClassExt_%s",
|
|
IDENTIFIER_POINTER (CLASS_NAME (context)));
|
|
decl = start_var_decl (objc_class_ext_template, buf);
|
|
expr = objc_build_constructor (TREE_TYPE (decl), v);
|
|
OBJCMETA (decl, objc_meta, meta_class_extension);
|
|
finish_var_decl (decl, expr);
|
|
return decl;
|
|
}
|
|
|
|
/* struct _objc_class {
|
|
struct objc_class *isa;
|
|
struct objc_class *super_class;
|
|
char *name;
|
|
long version;
|
|
long info;
|
|
long instance_size;
|
|
struct objc_ivar_list *ivars;
|
|
struct objc_method_list *methods;
|
|
struct objc_cache *cache;
|
|
struct objc_protocol_list *protocols;
|
|
#if ABI >= 1
|
|
const char *ivar_layout;
|
|
struct _objc_class_ext *ext;
|
|
#else
|
|
void *sel_id;
|
|
void *gc_object_type;
|
|
#endif
|
|
}; */
|
|
|
|
static tree
|
|
build_v1_shared_structure_initializer (tree type, tree isa, tree super,
|
|
tree name, tree size, int status,
|
|
tree dispatch_table, tree ivar_list,
|
|
tree protocol_list, tree class_ext)
|
|
{
|
|
tree expr, ltyp;
|
|
location_t loc;
|
|
VEC(constructor_elt,gc) *v = NULL;
|
|
|
|
/* TODO: fish the location out of the input data. */
|
|
loc = UNKNOWN_LOCATION;
|
|
|
|
/* isa = */
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, isa);
|
|
|
|
/* super_class = */
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, super);
|
|
|
|
/* name = */
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, default_conversion (name));
|
|
|
|
/* version = */
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
|
|
build_int_cst (long_integer_type_node, 0));
|
|
|
|
/* info = */
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
|
|
build_int_cst (long_integer_type_node, status));
|
|
|
|
/* instance_size = */
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
|
|
convert (long_integer_type_node, size));
|
|
|
|
/* objc_ivar_list = */
|
|
ltyp = objc_ivar_list_ptr;
|
|
if (ivar_list)
|
|
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, ivar_list, 0));
|
|
else
|
|
expr = convert (ltyp, null_pointer_node);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
|
|
|
|
/* objc_method_list = */
|
|
ltyp = objc_method_list_ptr;
|
|
if (dispatch_table)
|
|
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, dispatch_table, 0));
|
|
else
|
|
expr = convert (ltyp, null_pointer_node);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
|
|
|
|
ltyp = build_pointer_type (xref_tag (RECORD_TYPE,
|
|
get_identifier ("objc_cache")));
|
|
/* method_cache = */
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, convert (ltyp, null_pointer_node));
|
|
|
|
/* protocol_list = */
|
|
ltyp = build_pointer_type (build_pointer_type (objc_protocol_template));
|
|
if (protocol_list)
|
|
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, protocol_list, 0));
|
|
else
|
|
expr = convert (ltyp, null_pointer_node);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
|
|
|
|
if (flag_objc_abi >= 1)
|
|
{
|
|
/* TODO: figure out the ivar_layout stuff. */
|
|
expr = convert (const_string_type_node, null_pointer_node);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
|
|
if (!objc_class_ext_template)
|
|
build_objc_class_ext_template ();
|
|
ltyp = build_pointer_type (objc_class_ext_template);
|
|
if (class_ext)
|
|
expr = convert (ltyp, build_unary_op (loc, ADDR_EXPR, class_ext, 0));
|
|
else
|
|
expr = convert (ltyp, null_pointer_node);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
|
|
}
|
|
else
|
|
{
|
|
/* sel_id = NULL */
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, null_pointer_node);
|
|
|
|
/* gc_object_type = NULL */
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, null_pointer_node);
|
|
}
|
|
return objc_build_constructor (type, v);
|
|
}
|
|
|
|
static tree
|
|
generate_ivars_list (tree chain, const char *name, tree attr)
|
|
{
|
|
tree initlist, ivar_list_template, decl;
|
|
int size;
|
|
VEC(constructor_elt,gc) *inits = NULL;
|
|
|
|
if (!chain)
|
|
return NULL_TREE;
|
|
|
|
if (!objc_ivar_template)
|
|
objc_ivar_template = build_ivar_template ();
|
|
|
|
size = ivar_list_length (chain);
|
|
|
|
generating_instance_variables = 1;
|
|
ivar_list_template = build_ivar_list_template (objc_ivar_template, size);
|
|
initlist = build_ivar_list_initializer (objc_ivar_template, chain);
|
|
generating_instance_variables = 0;
|
|
|
|
decl = start_var_decl (ivar_list_template, name);
|
|
|
|
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, build_int_cst (NULL_TREE, size));
|
|
CONSTRUCTOR_APPEND_ELT (inits, NULL_TREE, initlist);
|
|
|
|
OBJCMETA (decl, objc_meta, attr);
|
|
finish_var_decl (decl,
|
|
objc_build_constructor (TREE_TYPE (decl), inits));
|
|
|
|
return decl;
|
|
}
|
|
|
|
/* static struct objc_class _OBJC_METACLASS_Foo={ ... };
|
|
static struct objc_class _OBJC_CLASS_Foo={ ... }; */
|
|
|
|
static void
|
|
generate_v1_class_structs (struct imp_entry *impent)
|
|
{
|
|
tree name_expr, super_expr, root_expr, class_decl, meta_decl;
|
|
tree my_root_id, my_super_id;
|
|
tree cast_type, initlist, protocol_decl;
|
|
tree class_ext_decl = NULL_TREE, props = NULL_TREE;
|
|
tree inst_methods = NULL_TREE, class_methods = NULL_TREE;
|
|
tree chain, inst_ivars = NULL_TREE, class_ivars = NULL_TREE;
|
|
int cls_flags;
|
|
location_t loc;
|
|
char buf[BUFSIZE];
|
|
|
|
/* objc_implementation_context = impent->imp_context;
|
|
implementation_template = impent->imp_template;*/
|
|
class_decl = impent->class_decl;
|
|
meta_decl = impent->meta_decl;
|
|
cls_flags = impent->has_cxx_cdtors ? CLS_HAS_CXX_STRUCTORS : 0 ;
|
|
|
|
loc = DECL_SOURCE_LOCATION (impent->class_decl);
|
|
|
|
if (flag_objc_abi >= 1)
|
|
{
|
|
/* ABI=1 additions. */
|
|
props = generate_v1_property_table (NULL_TREE, impent->imp_context);
|
|
class_ext_decl = generate_objc_class_ext (props, impent->imp_context);
|
|
}
|
|
|
|
my_super_id = CLASS_SUPER_NAME (impent->imp_template);
|
|
if (my_super_id)
|
|
{
|
|
add_class_reference (my_super_id);
|
|
|
|
/* Compute "my_root_id" - this is required for code generation.
|
|
the "isa" for all meta class structures points to the root of
|
|
the inheritance hierarchy (e.g. "__Object")... */
|
|
my_root_id = my_super_id;
|
|
do
|
|
{
|
|
tree my_root_int = lookup_interface (my_root_id);
|
|
|
|
if (my_root_int && CLASS_SUPER_NAME (my_root_int))
|
|
my_root_id = CLASS_SUPER_NAME (my_root_int);
|
|
else
|
|
break;
|
|
}
|
|
while (1);
|
|
super_expr = add_objc_string (my_super_id, class_names);
|
|
}
|
|
else
|
|
{
|
|
/* No super class. */
|
|
my_root_id = CLASS_NAME (impent->imp_template);
|
|
super_expr = null_pointer_node;
|
|
}
|
|
|
|
/* Install class `isa' and `super' pointers at runtime. */
|
|
cast_type = build_pointer_type (objc_class_template);
|
|
super_expr = build_c_cast (loc, cast_type, super_expr);
|
|
|
|
root_expr = add_objc_string (my_root_id, class_names);
|
|
root_expr = build_c_cast (loc, cast_type, root_expr);
|
|
|
|
if (CLASS_PROTOCOL_LIST (impent->imp_template))
|
|
{
|
|
generate_protocol_references (CLASS_PROTOCOL_LIST (impent->imp_template));
|
|
protocol_decl = generate_v1_protocol_list (impent->imp_template,
|
|
impent->imp_context);
|
|
}
|
|
else
|
|
protocol_decl = NULL_TREE;
|
|
|
|
if (CLASS_CLS_METHODS (impent->imp_context))
|
|
{
|
|
snprintf (buf, BUFSIZE, "_OBJC_ClassMethods_%s",
|
|
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
|
|
class_methods = generate_dispatch_table (CLASS_CLS_METHODS (impent->imp_context),
|
|
buf, meta_clac_meth);
|
|
}
|
|
|
|
if (CLASS_SUPER_NAME (impent->imp_template) == NULL_TREE
|
|
&& (chain = TYPE_FIELDS (objc_class_template)))
|
|
{
|
|
snprintf (buf, BUFSIZE, "_OBJC_ClassIvars_%s",
|
|
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
|
|
class_ivars = generate_ivars_list (chain, buf, meta_clac_vars);
|
|
}
|
|
/* TODO: get rid of hidden passing of stuff in globals. */
|
|
/* UOBJC_INSTANCE/CLASS_Variables_decl made in generate_ivarlists(). */
|
|
|
|
name_expr = add_objc_string (CLASS_NAME (impent->imp_template), class_names);
|
|
|
|
/* static struct objc_class _OBJC_METACLASS_Foo = { ... }; */
|
|
|
|
initlist = build_v1_shared_structure_initializer
|
|
(TREE_TYPE (meta_decl),
|
|
root_expr, super_expr, name_expr,
|
|
convert (integer_type_node, TYPE_SIZE_UNIT (objc_class_template)),
|
|
CLS_META, class_methods, class_ivars,
|
|
protocol_decl, NULL_TREE);
|
|
|
|
finish_var_decl (meta_decl, initlist);
|
|
impent->meta_decl = meta_decl;
|
|
|
|
/* static struct objc_class _OBJC_CLASS_Foo={ ... }; */
|
|
if (CLASS_NST_METHODS (impent->imp_context))
|
|
{
|
|
snprintf (buf, BUFSIZE, "_OBJC_InstanceMethods_%s",
|
|
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
|
|
inst_methods = generate_dispatch_table (CLASS_NST_METHODS (impent->imp_context),
|
|
buf, meta_clai_meth);
|
|
}
|
|
|
|
if ((chain = CLASS_IVARS (impent->imp_template)))
|
|
{
|
|
snprintf (buf, BUFSIZE, "_OBJC_InstanceIvars_%s",
|
|
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
|
|
inst_ivars = generate_ivars_list (chain, buf, meta_clai_vars);
|
|
}
|
|
|
|
initlist = build_v1_shared_structure_initializer
|
|
(TREE_TYPE (class_decl),
|
|
build_unary_op (loc, ADDR_EXPR, meta_decl, 0),
|
|
super_expr, name_expr,
|
|
convert (integer_type_node,
|
|
TYPE_SIZE_UNIT (CLASS_STATIC_TEMPLATE (impent->imp_template))),
|
|
CLS_FACTORY | cls_flags, inst_methods, inst_ivars,
|
|
protocol_decl, class_ext_decl);
|
|
|
|
finish_var_decl (class_decl, initlist);
|
|
impent->class_decl = class_decl;
|
|
}
|
|
|
|
/* --- Output NeXT V1 Metadata --- */
|
|
|
|
/* Create the initial value for the `defs' field of _objc_symtab.
|
|
This is a CONSTRUCTOR. */
|
|
|
|
static tree
|
|
init_def_list (tree type)
|
|
{
|
|
tree expr;
|
|
location_t loc;
|
|
struct imp_entry *impent;
|
|
VEC(constructor_elt,gc) *v = NULL;
|
|
|
|
if (imp_count)
|
|
for (impent = imp_list; impent; impent = impent->next)
|
|
{
|
|
if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION_TYPE)
|
|
{
|
|
loc = DECL_SOURCE_LOCATION (impent->class_decl);
|
|
expr = build_unary_op (loc,
|
|
ADDR_EXPR, impent->class_decl, 0);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
|
|
}
|
|
}
|
|
|
|
if (cat_count)
|
|
for (impent = imp_list; impent; impent = impent->next)
|
|
{
|
|
if (TREE_CODE (impent->imp_context) == CATEGORY_IMPLEMENTATION_TYPE)
|
|
{
|
|
loc = DECL_SOURCE_LOCATION (impent->class_decl);
|
|
expr = build_unary_op (loc,
|
|
ADDR_EXPR, impent->class_decl, 0);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, expr);
|
|
}
|
|
}
|
|
|
|
return objc_build_constructor (type, v);
|
|
}
|
|
|
|
/* Take care of defining and initializing _OBJC_SYMBOLS. */
|
|
|
|
/* Predefine the following data type:
|
|
|
|
struct _objc_symtab
|
|
{
|
|
long sel_ref_cnt;
|
|
SEL *refs;
|
|
short cls_def_cnt;
|
|
short cat_def_cnt;
|
|
void *defs[cls_def_cnt + cat_def_cnt];
|
|
}; */
|
|
|
|
static void
|
|
build_objc_symtab_template (void)
|
|
{
|
|
tree fields, *chain = NULL;
|
|
|
|
objc_symtab_template = objc_start_struct (get_identifier (UTAG_SYMTAB));
|
|
|
|
/* long sel_ref_cnt; */
|
|
fields = add_field_decl (long_integer_type_node, "sel_ref_cnt", &chain);
|
|
|
|
/* SEL *refs; */
|
|
add_field_decl (build_pointer_type (objc_selector_type), "refs", &chain);
|
|
|
|
/* short cls_def_cnt; */
|
|
add_field_decl (short_integer_type_node, "cls_def_cnt", &chain);
|
|
|
|
/* short cat_def_cnt; */
|
|
add_field_decl (short_integer_type_node, "cat_def_cnt", &chain);
|
|
|
|
if (imp_count || cat_count)
|
|
{
|
|
/* void *defs[imp_count + cat_count (+ 1)]; */
|
|
/* NB: The index is one less than the size of the array. */
|
|
int index = imp_count + cat_count;
|
|
tree array_type = build_sized_array_type (ptr_type_node, index);
|
|
add_field_decl (array_type, "defs", &chain);
|
|
}
|
|
|
|
objc_finish_struct (objc_symtab_template, fields);
|
|
}
|
|
/* Construct the initial value for all of _objc_symtab. */
|
|
|
|
static tree
|
|
init_objc_symtab (tree type)
|
|
{
|
|
VEC(constructor_elt,gc) *v = NULL;
|
|
|
|
/* sel_ref_cnt = { ..., 5, ... } */
|
|
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
|
|
build_int_cst (long_integer_type_node, 0));
|
|
|
|
/* refs = { ..., _OBJC_SELECTOR_TABLE, ... } */
|
|
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
|
|
convert (build_pointer_type (objc_selector_type),
|
|
integer_zero_node));
|
|
|
|
/* cls_def_cnt = { ..., 5, ... } */
|
|
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
|
|
build_int_cst (short_integer_type_node, imp_count));
|
|
|
|
/* cat_def_cnt = { ..., 5, ... } */
|
|
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE,
|
|
build_int_cst (short_integer_type_node, cat_count));
|
|
|
|
/* cls_def = { ..., { &Foo, &Bar, ...}, ... } */
|
|
|
|
if (imp_count || cat_count)
|
|
{
|
|
tree field = TYPE_FIELDS (type);
|
|
field = DECL_CHAIN (DECL_CHAIN (DECL_CHAIN (DECL_CHAIN (field))));
|
|
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, init_def_list (TREE_TYPE (field)));
|
|
}
|
|
|
|
return objc_build_constructor (type, v);
|
|
}
|
|
|
|
/* Create the declaration of _OBJC_SYMBOLS, with type `struct _objc_symtab'
|
|
and initialized appropriately. */
|
|
|
|
static void
|
|
generate_objc_symtab_decl (void)
|
|
{
|
|
build_objc_symtab_template ();
|
|
UOBJC_SYMBOLS_decl = start_var_decl (objc_symtab_template, "_OBJC_Symbols");
|
|
/* Allow the runtime to mark meta-data such that it can be assigned to target
|
|
specific sections by the back-end. */
|
|
OBJCMETA (UOBJC_SYMBOLS_decl, objc_meta, meta_symtab);
|
|
finish_var_decl (UOBJC_SYMBOLS_decl,
|
|
init_objc_symtab (TREE_TYPE (UOBJC_SYMBOLS_decl)));
|
|
}
|
|
|
|
/* Any target implementing NeXT ObjC m32 ABI has to ensure that objects
|
|
refer to, and define, symbols that enforce linkage of classes into the
|
|
executable image, preserving unix archive semantics.
|
|
|
|
At present (4.8), the only targets implementing this are Darwin; these
|
|
use top level asms to implement a scheme (see config/darwin-c.c). The
|
|
latter method is a hack, but compatible with LTO see also PR48109 for
|
|
further discussion and other possible methods. */
|
|
|
|
static void
|
|
handle_next_class_ref (tree chain ATTRIBUTE_UNUSED)
|
|
{
|
|
if (targetcm.objc_declare_unresolved_class_reference)
|
|
{
|
|
const char *name = IDENTIFIER_POINTER (TREE_VALUE (chain));
|
|
char *string = (char *) alloca (strlen (name) + 30);
|
|
sprintf (string, ".objc_class_name_%s", name);
|
|
targetcm.objc_declare_unresolved_class_reference (string);
|
|
}
|
|
}
|
|
|
|
static void
|
|
handle_next_impent (struct imp_entry *impent ATTRIBUTE_UNUSED)
|
|
{
|
|
if (targetcm.objc_declare_class_definition)
|
|
{
|
|
char buf[BUFSIZE];
|
|
|
|
switch (TREE_CODE (impent->imp_context))
|
|
{
|
|
case CLASS_IMPLEMENTATION_TYPE:
|
|
snprintf (buf, BUFSIZE, ".objc_class_name_%s",
|
|
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
|
|
break;
|
|
case CATEGORY_IMPLEMENTATION_TYPE:
|
|
snprintf (buf, BUFSIZE, "*.objc_category_name_%s_%s",
|
|
IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)),
|
|
IDENTIFIER_POINTER (CLASS_SUPER_NAME (impent->imp_context)));
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
targetcm.objc_declare_class_definition (buf);
|
|
}
|
|
}
|
|
|
|
static void
|
|
generate_classref_translation_entry (tree chain)
|
|
{
|
|
tree expr, decl, type;
|
|
|
|
decl = TREE_PURPOSE (chain);
|
|
type = TREE_TYPE (decl);
|
|
|
|
expr = add_objc_string (TREE_VALUE (chain), class_names);
|
|
expr = convert (type, expr); /* cast! */
|
|
|
|
/* This is a class reference. It is re-written by the runtime,
|
|
but will be optimized away unless we force it. */
|
|
DECL_PRESERVE_P (decl) = 1;
|
|
OBJCMETA (decl, objc_meta, meta_class_reference);
|
|
finish_var_decl (decl, expr);
|
|
return;
|
|
}
|
|
|
|
|
|
/* The Fix-and-Continue functionality available in Mac OS X 10.3 and
|
|
later requires that ObjC translation units participating in F&C be
|
|
specially marked. The following routine accomplishes this. */
|
|
|
|
/* static int _OBJC_IMAGE_INFO[2] = { 0, 1 }; */
|
|
|
|
static void
|
|
generate_objc_image_info (void)
|
|
{
|
|
tree decl;
|
|
int flags
|
|
= ((flag_replace_objc_classes && imp_count ? 1 : 0)
|
|
| (flag_objc_gc ? 2 : 0));
|
|
VEC(constructor_elt,gc) *v = NULL;
|
|
tree array_type;
|
|
|
|
array_type = build_sized_array_type (integer_type_node, 2);
|
|
|
|
decl = start_var_decl (array_type, "_OBJC_ImageInfo");
|
|
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, integer_zero_node);
|
|
CONSTRUCTOR_APPEND_ELT (v, NULL_TREE, build_int_cst (integer_type_node, flags));
|
|
/* The runtime wants this and refers to it in a manner hidden from the compiler.
|
|
So we must force the output. */
|
|
DECL_PRESERVE_P (decl) = 1;
|
|
OBJCMETA (decl, objc_meta, meta_info);
|
|
finish_var_decl (decl, objc_build_constructor (TREE_TYPE (decl), v));
|
|
}
|
|
|
|
static void
|
|
objc_generate_v1_next_metadata (void)
|
|
{
|
|
struct imp_entry *impent;
|
|
tree chain, attr;
|
|
long vers;
|
|
|
|
/* FIXME: Make sure that we generate no metadata if there is nothing
|
|
to put into it. */
|
|
|
|
if (objc_static_instances)
|
|
gcc_unreachable (); /* Not for NeXT */
|
|
|
|
build_metadata_templates ();
|
|
objc_implementation_context =
|
|
implementation_template =
|
|
UOBJC_CLASS_decl =
|
|
UOBJC_METACLASS_decl = NULL_TREE;
|
|
|
|
for (impent = imp_list; impent; impent = impent->next)
|
|
{
|
|
|
|
/* If -gen-decls is present, Dump the @interface of each class.
|
|
TODO: Dump the classes in the order they were found, rather than in
|
|
reverse order as we are doing now. */
|
|
if (flag_gen_declaration)
|
|
dump_interface (gen_declaration_file, impent->imp_context);
|
|
|
|
/* all of the following reference the string pool... */
|
|
if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION_TYPE)
|
|
generate_v1_class_structs (impent);
|
|
else
|
|
generate_v1_category (impent);
|
|
}
|
|
|
|
/* If we are using an array of selectors, we must always
|
|
finish up the array decl even if no selectors were used. */
|
|
build_next_selector_translation_table ();
|
|
|
|
if (protocol_chain)
|
|
generate_v1_protocols ();
|
|
|
|
/* Pass summary information to the runtime. */
|
|
if (imp_count || cat_count)
|
|
generate_objc_symtab_decl ();
|
|
|
|
vers = OBJC_VERSION;
|
|
attr = build_tree_list (objc_meta, meta_modules);
|
|
build_module_descriptor (vers, attr);
|
|
|
|
/* This conveys information on GC usage and zero-link. */
|
|
generate_objc_image_info ();
|
|
|
|
/* Dump the class references. This forces the appropriate classes
|
|
to be linked into the executable image, preserving unix archive
|
|
semantics. */
|
|
for (chain = cls_ref_chain; chain; chain = TREE_CHAIN (chain))
|
|
{
|
|
handle_next_class_ref (chain);
|
|
if (TREE_PURPOSE (chain))
|
|
generate_classref_translation_entry (chain);
|
|
}
|
|
|
|
for (impent = imp_list; impent; impent = impent->next)
|
|
handle_next_impent (impent);
|
|
|
|
/* Emit the strings tables. */
|
|
generate_strings ();
|
|
}
|
|
|
|
/* --- exceptions stuff --- */
|
|
|
|
/* Predefine the following data type:
|
|
|
|
struct _objc_exception_data
|
|
{
|
|
int buf[OBJC_JBLEN];
|
|
void *pointers[4];
|
|
}; */
|
|
|
|
/* The following yuckiness should prevent users from having to #include
|
|
<setjmp.h> in their code... */
|
|
|
|
/* Define to a harmless positive value so the below code doesn't die. */
|
|
#ifndef OBJC_JBLEN
|
|
#define OBJC_JBLEN 18
|
|
#endif
|
|
|
|
static void
|
|
build_next_objc_exception_stuff (void)
|
|
{
|
|
tree decls, temp_type, *chain = NULL;
|
|
|
|
objc_exception_data_template
|
|
= objc_start_struct (get_identifier (UTAG_EXCDATA));
|
|
|
|
/* int buf[OBJC_JBLEN]; */
|
|
|
|
temp_type = build_sized_array_type (integer_type_node, OBJC_JBLEN);
|
|
decls = add_field_decl (temp_type, "buf", &chain);
|
|
|
|
/* void *pointers[4]; */
|
|
|
|
temp_type = build_sized_array_type (ptr_type_node, 4);
|
|
add_field_decl (temp_type, "pointers", &chain);
|
|
|
|
objc_finish_struct (objc_exception_data_template, decls);
|
|
|
|
/* int _setjmp(...); */
|
|
/* If the user includes <setjmp.h>, this shall be superseded by
|
|
'int _setjmp(jmp_buf);' */
|
|
temp_type = build_varargs_function_type_list (integer_type_node, NULL_TREE);
|
|
objc_setjmp_decl
|
|
= add_builtin_function (TAG_SETJMP, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE);
|
|
|
|
/* id objc_exception_extract(struct _objc_exception_data *); */
|
|
temp_type
|
|
= build_function_type_list (objc_object_type,
|
|
build_pointer_type (objc_exception_data_template),
|
|
NULL_TREE);
|
|
objc_exception_extract_decl
|
|
= add_builtin_function (TAG_EXCEPTIONEXTRACT, temp_type, 0, NOT_BUILT_IN, NULL,
|
|
NULL_TREE);
|
|
/* void objc_exception_try_enter(struct _objc_exception_data *); */
|
|
/* void objc_exception_try_exit(struct _objc_exception_data *); */
|
|
temp_type
|
|
= build_function_type_list (void_type_node,
|
|
build_pointer_type (objc_exception_data_template),
|
|
NULL_TREE);
|
|
objc_exception_try_enter_decl
|
|
= add_builtin_function (TAG_EXCEPTIONTRYENTER, temp_type, 0, NOT_BUILT_IN, NULL,
|
|
NULL_TREE);
|
|
objc_exception_try_exit_decl
|
|
= add_builtin_function (TAG_EXCEPTIONTRYEXIT, temp_type, 0, NOT_BUILT_IN, NULL,
|
|
NULL_TREE);
|
|
|
|
/* int objc_exception_match(id, id); */
|
|
temp_type
|
|
= build_function_type_list (integer_type_node,
|
|
objc_object_type, objc_object_type, NULL_TREE);
|
|
objc_exception_match_decl
|
|
= add_builtin_function (TAG_EXCEPTIONMATCH, temp_type, 0, NOT_BUILT_IN, NULL,
|
|
NULL_TREE);
|
|
|
|
/* id objc_assign_ivar (id, id, unsigned int); */
|
|
/* id objc_assign_ivar_Fast (id, id, unsigned int)
|
|
__attribute__ ((hard_coded_address (OFFS_ASSIGNIVAR_FAST))); */
|
|
temp_type
|
|
= build_function_type_list (objc_object_type,
|
|
objc_object_type,
|
|
objc_object_type,
|
|
unsigned_type_node,
|
|
NULL_TREE);
|
|
objc_assign_ivar_decl
|
|
= add_builtin_function (TAG_ASSIGNIVAR, temp_type, 0, NOT_BUILT_IN,
|
|
NULL, NULL_TREE);
|
|
#ifdef OFFS_ASSIGNIVAR_FAST
|
|
objc_assign_ivar_fast_decl
|
|
= add_builtin_function (TAG_ASSIGNIVAR_FAST, temp_type, 0,
|
|
NOT_BUILT_IN, NULL, NULL_TREE);
|
|
DECL_ATTRIBUTES (objc_assign_ivar_fast_decl)
|
|
= tree_cons (get_identifier ("hard_coded_address"),
|
|
build_int_cst (NULL_TREE, OFFS_ASSIGNIVAR_FAST),
|
|
NULL_TREE);
|
|
#else
|
|
/* Default to slower ivar method. */
|
|
objc_assign_ivar_fast_decl = objc_assign_ivar_decl;
|
|
#endif
|
|
|
|
/* id objc_assign_global (id, id *); */
|
|
/* id objc_assign_strongCast (id, id *); */
|
|
temp_type = build_function_type_list (objc_object_type,
|
|
objc_object_type,
|
|
build_pointer_type (objc_object_type),
|
|
NULL_TREE);
|
|
objc_assign_global_decl
|
|
= add_builtin_function (TAG_ASSIGNGLOBAL, temp_type, 0, NOT_BUILT_IN, NULL,
|
|
NULL_TREE);
|
|
objc_assign_strong_cast_decl
|
|
= add_builtin_function (TAG_ASSIGNSTRONGCAST, temp_type, 0, NOT_BUILT_IN, NULL,
|
|
NULL_TREE);
|
|
}
|
|
|
|
/* --- NeXT V1 SJLJ Exceptions --- */
|
|
|
|
/* Build "objc_exception_try_exit(&_stack)". */
|
|
|
|
static tree
|
|
next_sjlj_build_try_exit (struct objc_try_context **ctcp)
|
|
{
|
|
tree t;
|
|
t = build_fold_addr_expr_loc (input_location, (*ctcp)->stack_decl);
|
|
t = tree_cons (NULL, t, NULL);
|
|
t = build_function_call (input_location,
|
|
objc_exception_try_exit_decl, t);
|
|
return t;
|
|
}
|
|
|
|
/* Build
|
|
objc_exception_try_enter (&_stack);
|
|
if (_setjmp(&_stack.buf))
|
|
;
|
|
else
|
|
;
|
|
Return the COND_EXPR. Note that the THEN and ELSE fields are left
|
|
empty, ready for the caller to fill them in. */
|
|
|
|
static tree
|
|
next_sjlj_build_enter_and_setjmp (struct objc_try_context **ctcp)
|
|
{
|
|
tree t, enter, sj, cond;
|
|
|
|
t = build_fold_addr_expr_loc (input_location, (*ctcp)->stack_decl);
|
|
t = tree_cons (NULL, t, NULL);
|
|
enter = build_function_call (input_location,
|
|
objc_exception_try_enter_decl, t);
|
|
|
|
t = objc_build_component_ref ((*ctcp)->stack_decl,
|
|
get_identifier ("buf"));
|
|
t = build_fold_addr_expr_loc (input_location, t);
|
|
#ifdef OBJCPLUS
|
|
/* Convert _setjmp argument to type that is expected. */
|
|
if (prototype_p (TREE_TYPE (objc_setjmp_decl)))
|
|
t = convert (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (objc_setjmp_decl))), t);
|
|
else
|
|
t = convert (ptr_type_node, t);
|
|
#else
|
|
t = convert (ptr_type_node, t);
|
|
#endif
|
|
t = tree_cons (NULL, t, NULL);
|
|
sj = build_function_call (input_location,
|
|
objc_setjmp_decl, t);
|
|
|
|
cond = build2 (COMPOUND_EXPR, TREE_TYPE (sj), enter, sj);
|
|
cond = c_common_truthvalue_conversion (input_location, cond);
|
|
|
|
return build3 (COND_EXPR, void_type_node, cond, NULL, NULL);
|
|
}
|
|
|
|
/* Build:
|
|
|
|
DECL = objc_exception_extract(&_stack); */
|
|
|
|
static tree
|
|
next_sjlj_build_exc_extract (struct objc_try_context **ctcp, tree decl)
|
|
{
|
|
tree t;
|
|
|
|
t = build_fold_addr_expr_loc (input_location, (*ctcp)->stack_decl);
|
|
t = tree_cons (NULL, t, NULL);
|
|
t = build_function_call (input_location,
|
|
objc_exception_extract_decl, t);
|
|
t = convert (TREE_TYPE (decl), t);
|
|
t = build2 (MODIFY_EXPR, void_type_node, decl, t);
|
|
|
|
return t;
|
|
}
|
|
|
|
/* Build
|
|
if (objc_exception_match(obj_get_class(TYPE), _caught)
|
|
BODY
|
|
else if (...)
|
|
...
|
|
else
|
|
{
|
|
_rethrow = _caught;
|
|
objc_exception_try_exit(&_stack);
|
|
}
|
|
from the sequence of CATCH_EXPRs in the current try context. */
|
|
|
|
static tree
|
|
next_sjlj_build_catch_list (struct objc_try_context **ctcp)
|
|
{
|
|
tree_stmt_iterator i = tsi_start ((*ctcp)->catch_list);
|
|
tree catch_seq, t;
|
|
tree *last = &catch_seq;
|
|
bool saw_id = false;
|
|
|
|
for (; !tsi_end_p (i); tsi_next (&i))
|
|
{
|
|
tree stmt = tsi_stmt (i);
|
|
tree type = CATCH_TYPES (stmt);
|
|
tree body = CATCH_BODY (stmt);
|
|
|
|
if (type != error_mark_node
|
|
&& objc_is_object_id (TREE_TYPE (type)))
|
|
{
|
|
*last = body;
|
|
saw_id = true;
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
tree args, cond;
|
|
|
|
if (type == error_mark_node)
|
|
cond = error_mark_node;
|
|
else
|
|
{
|
|
args = tree_cons (NULL, (*ctcp)->caught_decl, NULL);
|
|
t = objc_get_class_reference (OBJC_TYPE_NAME (TREE_TYPE (type)));
|
|
args = tree_cons (NULL, t, args);
|
|
t = build_function_call (input_location,
|
|
objc_exception_match_decl, args);
|
|
cond = c_common_truthvalue_conversion (input_location, t);
|
|
}
|
|
t = build3 (COND_EXPR, void_type_node, cond, body, NULL);
|
|
SET_EXPR_LOCATION (t, EXPR_LOCATION (stmt));
|
|
|
|
*last = t;
|
|
last = &COND_EXPR_ELSE (t);
|
|
}
|
|
}
|
|
|
|
if (!saw_id)
|
|
{
|
|
t = build2 (MODIFY_EXPR, void_type_node, (*ctcp)->rethrow_decl,
|
|
(*ctcp)->caught_decl);
|
|
SET_EXPR_LOCATION (t, (*ctcp)->end_catch_locus);
|
|
append_to_statement_list (t, last);
|
|
|
|
t = next_sjlj_build_try_exit (ctcp);
|
|
SET_EXPR_LOCATION (t, (*ctcp)->end_catch_locus);
|
|
append_to_statement_list (t, last);
|
|
}
|
|
|
|
return catch_seq;
|
|
}
|
|
|
|
/* Build a complete @try-@catch-@finally block for legacy Darwin setjmp
|
|
exception handling. We aim to build:
|
|
|
|
{
|
|
struct _objc_exception_data _stack;
|
|
id _rethrow = 0;
|
|
try
|
|
{
|
|
objc_exception_try_enter (&_stack);
|
|
if (_setjmp(&_stack.buf))
|
|
{
|
|
id _caught = objc_exception_extract(&_stack);
|
|
objc_exception_try_enter (&_stack);
|
|
if (_setjmp(&_stack.buf))
|
|
_rethrow = objc_exception_extract(&_stack);
|
|
else
|
|
CATCH-LIST
|
|
}
|
|
else
|
|
TRY-BLOCK
|
|
}
|
|
finally
|
|
{
|
|
if (!_rethrow)
|
|
objc_exception_try_exit(&_stack);
|
|
FINALLY-BLOCK
|
|
if (_rethrow)
|
|
objc_exception_throw(_rethrow);
|
|
}
|
|
}
|
|
|
|
If CATCH-LIST is empty, we can omit all of the block containing
|
|
"_caught" except for the setting of _rethrow. Note the use of
|
|
a real TRY_FINALLY_EXPR here, which is not involved in EH per-se,
|
|
but handles goto and other exits from the block. */
|
|
|
|
static tree
|
|
next_sjlj_build_try_catch_finally (struct objc_try_context **ctcp)
|
|
{
|
|
tree rethrow_decl, stack_decl, t;
|
|
tree catch_seq, try_fin, bind;
|
|
struct objc_try_context *cur_try_context = *ctcp;
|
|
|
|
/* Create the declarations involved. */
|
|
t = xref_tag (RECORD_TYPE, get_identifier (UTAG_EXCDATA));
|
|
stack_decl = objc_create_temporary_var (t, NULL);
|
|
cur_try_context->stack_decl = stack_decl;
|
|
|
|
rethrow_decl = objc_create_temporary_var (objc_object_type, NULL);
|
|
cur_try_context->rethrow_decl = rethrow_decl;
|
|
TREE_CHAIN (rethrow_decl) = stack_decl;
|
|
|
|
/* Build the outermost variable binding level. */
|
|
bind = build3 (BIND_EXPR, void_type_node, rethrow_decl, NULL, NULL);
|
|
SET_EXPR_LOCATION (bind, cur_try_context->try_locus);
|
|
TREE_SIDE_EFFECTS (bind) = 1;
|
|
|
|
/* Initialize rethrow_decl. */
|
|
t = build2 (MODIFY_EXPR, void_type_node, rethrow_decl,
|
|
convert (objc_object_type, null_pointer_node));
|
|
SET_EXPR_LOCATION (t, cur_try_context->try_locus);
|
|
append_to_statement_list (t, &BIND_EXPR_BODY (bind));
|
|
|
|
/* Build the outermost TRY_FINALLY_EXPR. */
|
|
try_fin = build2 (TRY_FINALLY_EXPR, void_type_node, NULL, NULL);
|
|
SET_EXPR_LOCATION (try_fin, cur_try_context->try_locus);
|
|
TREE_SIDE_EFFECTS (try_fin) = 1;
|
|
append_to_statement_list (try_fin, &BIND_EXPR_BODY (bind));
|
|
|
|
/* Create the complete catch sequence. */
|
|
if (cur_try_context->catch_list)
|
|
{
|
|
tree caught_decl = objc_build_exc_ptr (ctcp);
|
|
catch_seq = build_stmt (input_location, BIND_EXPR, caught_decl, NULL, NULL);
|
|
TREE_SIDE_EFFECTS (catch_seq) = 1;
|
|
|
|
t = next_sjlj_build_exc_extract (ctcp, caught_decl);
|
|
append_to_statement_list (t, &BIND_EXPR_BODY (catch_seq));
|
|
|
|
t = next_sjlj_build_enter_and_setjmp (ctcp);
|
|
COND_EXPR_THEN (t) = next_sjlj_build_exc_extract (ctcp, rethrow_decl);
|
|
COND_EXPR_ELSE (t) = next_sjlj_build_catch_list (ctcp);
|
|
append_to_statement_list (t, &BIND_EXPR_BODY (catch_seq));
|
|
}
|
|
else
|
|
catch_seq = next_sjlj_build_exc_extract (ctcp, rethrow_decl);
|
|
SET_EXPR_LOCATION (catch_seq, cur_try_context->end_try_locus);
|
|
|
|
/* Build the main register-and-try if statement. */
|
|
t = next_sjlj_build_enter_and_setjmp (ctcp);
|
|
SET_EXPR_LOCATION (t, cur_try_context->try_locus);
|
|
COND_EXPR_THEN (t) = catch_seq;
|
|
COND_EXPR_ELSE (t) = cur_try_context->try_body;
|
|
TREE_OPERAND (try_fin, 0) = t;
|
|
|
|
/* Build the complete FINALLY statement list. */
|
|
t = next_sjlj_build_try_exit (ctcp);
|
|
t = build_stmt (input_location, COND_EXPR,
|
|
c_common_truthvalue_conversion
|
|
(input_location, rethrow_decl),
|
|
NULL, t);
|
|
SET_EXPR_LOCATION (t, cur_try_context->finally_locus);
|
|
append_to_statement_list (t, &TREE_OPERAND (try_fin, 1));
|
|
|
|
append_to_statement_list (cur_try_context->finally_body,
|
|
&TREE_OPERAND (try_fin, 1));
|
|
|
|
t = tree_cons (NULL, rethrow_decl, NULL);
|
|
t = build_function_call (input_location,
|
|
objc_exception_throw_decl, t);
|
|
t = build_stmt (input_location, COND_EXPR,
|
|
c_common_truthvalue_conversion (input_location,
|
|
rethrow_decl),
|
|
t, NULL);
|
|
SET_EXPR_LOCATION (t, cur_try_context->end_finally_locus);
|
|
append_to_statement_list (t, &TREE_OPERAND (try_fin, 1));
|
|
|
|
return bind;
|
|
}
|
|
|
|
/* We do not expect this to be used at the moment.
|
|
If (a) it is possible to implement unwinder exceptions.
|
|
(b) we do it... then it might be possibly useful.
|
|
*/
|
|
static GTY(()) tree objc_eh_personality_decl;
|
|
|
|
static tree
|
|
objc_eh_runtime_type (tree type)
|
|
{
|
|
tree ident, eh_id, decl, str;
|
|
|
|
gcc_unreachable ();
|
|
if (type == error_mark_node)
|
|
{
|
|
/* Use 'ErrorMarkNode' as class name when error_mark_node is found
|
|
to prevent an ICE. Note that we know that the compiler will
|
|
terminate with an error and this 'ErrorMarkNode' class name will
|
|
never be actually used. */
|
|
ident = get_identifier ("ErrorMarkNode");
|
|
goto make_err_class;
|
|
}
|
|
|
|
if (POINTER_TYPE_P (type) && objc_is_object_id (TREE_TYPE (type)))
|
|
{
|
|
ident = get_identifier ("id");
|
|
goto make_err_class;
|
|
}
|
|
|
|
if (!POINTER_TYPE_P (type) || !TYPED_OBJECT (TREE_TYPE (type)))
|
|
{
|
|
#ifdef OBJCPLUS
|
|
/* This routine is also called for c++'s catch clause; in which case,
|
|
we use c++'s typeinfo decl. */
|
|
return build_eh_type_type (type);
|
|
#else
|
|
error ("non-objective-c type '%T' cannot be caught", type);
|
|
ident = get_identifier ("ErrorMarkNode");
|
|
goto make_err_class;
|
|
#endif
|
|
}
|
|
else
|
|
ident = OBJC_TYPE_NAME (TREE_TYPE (type));
|
|
|
|
make_err_class:
|
|
/* If this class was already referenced, then it will be output during
|
|
meta-data emission, so we don't need to do it here. */
|
|
decl = get_objc_string_decl (ident, class_names);
|
|
eh_id = add_objc_string (ident, class_names);
|
|
if (!decl)
|
|
{
|
|
/* Not found ... so we need to build it - from the freshly-entered id. */
|
|
decl = get_objc_string_decl (ident, class_names);
|
|
str = my_build_string (IDENTIFIER_LENGTH (ident) + 1,
|
|
IDENTIFIER_POINTER (ident));
|
|
/* We have to finalize this var here, because this might be called after
|
|
all the other metadata strings have been emitted. */
|
|
finish_var_decl (decl, str);
|
|
}
|
|
return eh_id;
|
|
}
|
|
|
|
/* For NeXT ABI 0 and 1, the personality routines are just those of the
|
|
underlying language. */
|
|
|
|
static tree
|
|
objc_eh_personality (void)
|
|
{
|
|
if (!objc_eh_personality_decl)
|
|
#ifndef OBJCPLUS
|
|
objc_eh_personality_decl = build_personality_function ("gcc");
|
|
#else
|
|
objc_eh_personality_decl = build_personality_function ("gxx");
|
|
#endif
|
|
return objc_eh_personality_decl;
|
|
}
|
|
|
|
/* --- interfaces --- */
|
|
|
|
static tree
|
|
build_throw_stmt (location_t loc, tree throw_expr, bool rethrown ATTRIBUTE_UNUSED)
|
|
{
|
|
tree t;
|
|
VEC(tree, gc) *parms = VEC_alloc (tree, gc, 1);
|
|
/* A throw is just a call to the runtime throw function with the
|
|
object as a parameter. */
|
|
VEC_quick_push (tree, parms, throw_expr);
|
|
t = build_function_call_vec (loc, objc_exception_throw_decl, parms, NULL);
|
|
VEC_free (tree, gc, parms);
|
|
return add_stmt (t);
|
|
}
|
|
|
|
/* Build __builtin_eh_pointer, or the moral equivalent. In the case
|
|
of Darwin, we'll arrange for it to be initialized (and associated
|
|
with a binding) later. */
|
|
|
|
static tree
|
|
objc_build_exc_ptr (struct objc_try_context **cur_try_context)
|
|
{
|
|
if (flag_objc_sjlj_exceptions)
|
|
{
|
|
tree var = (*cur_try_context)->caught_decl;
|
|
if (!var)
|
|
{
|
|
var = objc_create_temporary_var (objc_object_type, NULL);
|
|
(*cur_try_context)->caught_decl = var;
|
|
}
|
|
return var;
|
|
}
|
|
else
|
|
{
|
|
tree t;
|
|
t = builtin_decl_explicit (BUILT_IN_EH_POINTER);
|
|
t = build_call_expr (t, 1, integer_zero_node);
|
|
return fold_convert (objc_object_type, t);
|
|
}
|
|
}
|
|
|
|
static tree
|
|
begin_catch (struct objc_try_context **cur_try_context, tree type,
|
|
tree decl, tree compound, bool ellipsis ATTRIBUTE_UNUSED)
|
|
{
|
|
tree t;
|
|
/* Record the data for the catch in the try context so that we can
|
|
finalize it later. We treat ellipsis the same way as catching
|
|
with 'id xyz'. */
|
|
t = build_stmt (input_location, CATCH_EXPR, type, compound);
|
|
(*cur_try_context)->current_catch = t;
|
|
|
|
/* Initialize the decl from the EXC_PTR_EXPR we get from the runtime. */
|
|
t = objc_build_exc_ptr (cur_try_context);
|
|
t = convert (TREE_TYPE (decl), t);
|
|
return build2 (MODIFY_EXPR, void_type_node, decl, t);
|
|
}
|
|
|
|
static void
|
|
finish_catch (struct objc_try_context **cur_try_context, tree current_catch)
|
|
{
|
|
append_to_statement_list (current_catch, &((*cur_try_context)->catch_list));
|
|
}
|
|
|
|
static tree
|
|
finish_try_stmt (struct objc_try_context **cur_try_context)
|
|
{
|
|
tree stmt;
|
|
struct objc_try_context *c = *cur_try_context;
|
|
/* If we're doing Darwin setjmp exceptions, build the big nasty. */
|
|
if (flag_objc_sjlj_exceptions)
|
|
{
|
|
bool save = in_late_binary_op;
|
|
in_late_binary_op = true;
|
|
if (!c->finally_body)
|
|
{
|
|
c->finally_locus = input_location;
|
|
c->end_finally_locus = input_location;
|
|
}
|
|
stmt = next_sjlj_build_try_catch_finally (cur_try_context);
|
|
in_late_binary_op = save;
|
|
}
|
|
else
|
|
/* This doesn't happen at the moment... but maybe one day... */
|
|
{
|
|
/* Otherwise, nest the CATCH inside a FINALLY. */
|
|
stmt = c->try_body;
|
|
if (c->catch_list)
|
|
stmt = build_stmt (c->try_locus, TRY_CATCH_EXPR, stmt, c->catch_list);
|
|
if (c->finally_body)
|
|
stmt = build_stmt (c->try_locus, TRY_FINALLY_EXPR, stmt, c->finally_body);
|
|
}
|
|
return stmt;
|
|
}
|
|
|
|
#include "gt-objc-objc-next-runtime-abi-01.h"
|