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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [objc/] [objc-runtime-hooks.h] - Rev 758
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/* Hooks to abstract the runtime meta-data generation for Objective C. Copyright (C) 2011 Free Software Foundation, Inc. Contributed by Iain Sandoe This file is part of GCC. GCC is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING3. If not see <http://www.gnu.org/licenses/>. */ #ifndef _OBJC_RUNTIME_HOOKS_H_ #define _OBJC_RUNTIME_HOOKS_H_ /* A set of hooks for the front end to obtain runtime-specific actions. */ /* Objective-C supports several runtime library variants: "GNU" runtime selected by -fgnu-runtime (currently at ABI version 8). "NeXT" runtime (selected by -fnext-runtime) and installed on OSX/Darwin systems at API version 1 (for m32 code) and version 2 (for m64 code). The runtimes require different data types/layouts, method call mechanisms and so on, and the purpose of this interface is to abstract such differences from the parser's perspective. */ /* TODO: Do we want the initial underscore ? */ typedef struct _objc_runtime_hooks_r { /* TODO: Expand comments in this file. */ /* Initialize for this runtime. */ void (*initialize) (void); const char *default_constant_string_class_name; /* FIXME: Having to check this name should not be necessary. */ const char *tag_getclass; /* id for superclass class field - named differently in the existing runtimes. */ tree (*super_superclassfield_ident) (void); /* Obtain a class decl for the identifier. */ tree (*class_decl) (tree); /* Obtain a metaclass decl for the identifier. */ tree (*metaclass_decl) (tree); /* Obtain a category decl for the identifier. */ tree (*category_decl) (tree); /* Obtain a protocol decl for the identifier. */ tree (*protocol_decl) (tree); /* Obtain a string decl, to be placed in the nominated string-section. */ tree (*string_decl) (tree, const char *, string_section); /* Obtain a class reference, generating the fwd def. if necessary. */ tree (*get_class_reference) (tree); /* build/get selector reference. */ tree (*build_selector_reference) (location_t, tree, tree); /* Get a protocol reference, generating the forward def. if necessary. */ tree (*get_protocol_reference) (location_t, tree); /* Get an ivar ref. re the base. */ tree (*build_ivar_reference) (location_t, tree, tree); /* Get a reference to {meta}class' super. */ tree (*get_class_super_ref) (location_t, struct imp_entry *, bool); /* Get a reference to Category {meta}class' super. */ tree (*get_category_super_ref) (location_t, struct imp_entry *, bool); /* Receiver is class Object, check runtime-specific. */ tree (*receiver_is_class_object) (tree); /* Get the start of a method argument type list (receiver, _cmd). */ void (*get_arg_type_list_base) (VEC(tree,gc) **, tree, int, int); /* Build method call. */ tree (*build_objc_method_call) (location_t, tree, tree, tree, tree, tree, int); /* Check for or otherwise handle a request to check that the constant string class reference is set-up & OK. */ bool (*setup_const_string_class_decl) (void); /* Return the tree reprenting a const string constructor for the arg. Most of the data are in global trees. */ tree (*build_const_string_constructor) (location_t, tree, int); /* Exceptions. */ tree (*build_throw_stmt) (location_t, tree, bool); tree (*build_exc_ptr) (struct objc_try_context **); tree (*begin_catch) (struct objc_try_context **, tree, tree, tree, bool); void (*finish_catch) (struct objc_try_context **, tree); tree (*finish_try_stmt) (struct objc_try_context **); /* Emit all the metadata required by the runtime - based on the tables built during parsing. */ void (*generate_metadata) (void); } objc_runtime_hooks; /* For shared support that needs to access these. */ extern objc_runtime_hooks runtime; /* One per runtime at present. TODO: Make into some kind of configury-generated table. */ extern bool objc_gnu_runtime_abi_01_init (objc_runtime_hooks *); extern bool objc_next_runtime_abi_01_init (objc_runtime_hooks *); extern bool objc_next_runtime_abi_02_init (objc_runtime_hooks *); #endif /* _OBJC_RUNTIME_HOOKS_H_ */
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