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Block objects [1] are a C-level syntactic and runtime feature. They are similar to standard C functions, but in addition to executable code they may also contain variable bindings to automatic (stack) or managed (heap) memory. A block can therefore maintain a set of state (data) that it can use to impact behavior when executed. This port is based on Apple's GCC 5646 with some bugfixes from Apple GCC 5666.3. It has some small differences with the support in clang, which remains the recommended compiler. Perhaps the most notable difference is that in GCC that __block is not actually a keyword, but a macro. There will be workaround for this issue in a near future. Other issues can be consulted in the clang documentation [2] For better compatiblity with Apple's GCC and llvm-gcc some related fixes and features from Apple have been included. Support for the non-standard nested functions in GCC is now off by default. No effort was made to update the ObjC support since FreeBSD doesn't carry ObjC in the base system, but some of the code crept in and was more difficult to remove than to adjust. Reference: [1] https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/Blocks/Articles/00_Introduction.html [2] http://clang.llvm.org/compatibility.html#block-variable-initialization Obtained from: Apple GCC 4.2 MFC after: 3 weeks
150 lines
6.0 KiB
C
150 lines
6.0 KiB
C
/* Language hooks common to C and ObjC front ends.
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Copyright (C) 2004, 2005 Free Software Foundation, Inc.
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Contributed by Ziemowit Laski <zlaski@apple.com>
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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 it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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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 COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA. */
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#ifndef GCC_C_OBJC_COMMON
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#define GCC_C_OBJC_COMMON
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/* In c-objc-common.c. */
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extern void c_initialize_diagnostics (diagnostic_context *);
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/* Lang hooks that are shared between C and ObjC are defined here. Hooks
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specific to C or ObjC go in c-lang.c and objc/objc-lang.c, respectively. */
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#undef LANG_HOOKS_IDENTIFIER_SIZE
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#define LANG_HOOKS_IDENTIFIER_SIZE C_SIZEOF_STRUCT_LANG_IDENTIFIER
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#undef LANG_HOOKS_FINISH
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#define LANG_HOOKS_FINISH c_common_finish
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#undef LANG_HOOKS_INIT_OPTIONS
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#define LANG_HOOKS_INIT_OPTIONS c_common_init_options
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#undef LANG_HOOKS_INITIALIZE_DIAGNOSTICS
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#define LANG_HOOKS_INITIALIZE_DIAGNOSTICS c_initialize_diagnostics
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#undef LANG_HOOKS_HANDLE_OPTION
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#define LANG_HOOKS_HANDLE_OPTION c_common_handle_option
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#undef LANG_HOOKS_MISSING_ARGUMENT
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#define LANG_HOOKS_MISSING_ARGUMENT c_common_missing_argument
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#undef LANG_HOOKS_POST_OPTIONS
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#define LANG_HOOKS_POST_OPTIONS c_common_post_options
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#undef LANG_HOOKS_GET_ALIAS_SET
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#define LANG_HOOKS_GET_ALIAS_SET c_common_get_alias_set
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#undef LANG_HOOKS_EXPAND_EXPR
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#define LANG_HOOKS_EXPAND_EXPR c_expand_expr
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#undef LANG_HOOKS_EXPAND_DECL
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#define LANG_HOOKS_EXPAND_DECL c_expand_decl
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#undef LANG_HOOKS_MARK_ADDRESSABLE
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#define LANG_HOOKS_MARK_ADDRESSABLE c_mark_addressable
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#undef LANG_HOOKS_PARSE_FILE
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#define LANG_HOOKS_PARSE_FILE c_common_parse_file
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#undef LANG_HOOKS_FINISH_INCOMPLETE_DECL
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#define LANG_HOOKS_FINISH_INCOMPLETE_DECL c_finish_incomplete_decl
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#undef LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS
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#define LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS true
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#undef LANG_HOOKS_STATICP
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#define LANG_HOOKS_STATICP c_staticp
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#undef LANG_HOOKS_NO_BODY_BLOCKS
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#define LANG_HOOKS_NO_BODY_BLOCKS true
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#undef LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL
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#define LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL c_warn_unused_global_decl
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#undef LANG_HOOKS_PRINT_IDENTIFIER
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#define LANG_HOOKS_PRINT_IDENTIFIER c_print_identifier
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#undef LANG_HOOKS_TYPES_COMPATIBLE_P
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#define LANG_HOOKS_TYPES_COMPATIBLE_P c_types_compatible_p
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#undef LANG_HOOKS_FUNCTION_ENTER_NESTED
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#define LANG_HOOKS_FUNCTION_ENTER_NESTED c_push_function_context
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#undef LANG_HOOKS_FUNCTION_LEAVE_NESTED
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#define LANG_HOOKS_FUNCTION_LEAVE_NESTED c_pop_function_context
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#undef LANG_HOOKS_FUNCTION_MISSING_NORETURN_OK_P
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#define LANG_HOOKS_FUNCTION_MISSING_NORETURN_OK_P c_missing_noreturn_ok_p
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#undef LANG_HOOKS_DUP_LANG_SPECIFIC_DECL
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#define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL c_dup_lang_specific_decl
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/* Attribute hooks. */
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#undef LANG_HOOKS_COMMON_ATTRIBUTE_TABLE
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#define LANG_HOOKS_COMMON_ATTRIBUTE_TABLE c_common_attribute_table
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#undef LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE
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#define LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE c_common_format_attribute_table
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#undef LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN
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#define LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN \
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c_cannot_inline_tree_fn
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#undef LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS
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#define LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS \
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c_disregard_inline_limits
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#undef LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P
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#define LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P \
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anon_aggr_type_p
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#undef LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING
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#define LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING \
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c_convert_parm_for_inlining
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#undef LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN
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#define LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN c_dump_tree
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#undef LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION
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#define LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION c_expand_body
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#undef LANG_HOOKS_TYPE_FOR_MODE
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#define LANG_HOOKS_TYPE_FOR_MODE c_common_type_for_mode
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#undef LANG_HOOKS_TYPE_FOR_SIZE
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#define LANG_HOOKS_TYPE_FOR_SIZE c_common_type_for_size
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#undef LANG_HOOKS_SIGNED_TYPE
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#define LANG_HOOKS_SIGNED_TYPE c_common_signed_type
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#undef LANG_HOOKS_UNSIGNED_TYPE
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#define LANG_HOOKS_UNSIGNED_TYPE c_common_unsigned_type
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#undef LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE
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#define LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE c_common_signed_or_unsigned_type
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#undef LANG_HOOKS_INCOMPLETE_TYPE_ERROR
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#define LANG_HOOKS_INCOMPLETE_TYPE_ERROR c_incomplete_type_error
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#undef LANG_HOOKS_TYPE_PROMOTES_TO
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#define LANG_HOOKS_TYPE_PROMOTES_TO c_type_promotes_to
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#undef LANG_HOOKS_REGISTER_BUILTIN_TYPE
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#define LANG_HOOKS_REGISTER_BUILTIN_TYPE c_register_builtin_type
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#undef LANG_HOOKS_TO_TARGET_CHARSET
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#define LANG_HOOKS_TO_TARGET_CHARSET c_common_to_target_charset
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#undef LANG_HOOKS_EXPR_TO_DECL
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#define LANG_HOOKS_EXPR_TO_DECL c_expr_to_decl
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/* The C front end's scoping structure is very different from
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that expected by the language-independent code; it is best
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to disable getdecls.
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This means it must also provide its own write_globals. */
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#undef LANG_HOOKS_GETDECLS
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#define LANG_HOOKS_GETDECLS lhd_return_null_tree_v
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#undef LANG_HOOKS_WRITE_GLOBALS
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#define LANG_HOOKS_WRITE_GLOBALS c_write_global_declarations
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/* Hooks for tree gimplification. */
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#undef LANG_HOOKS_GIMPLIFY_EXPR
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#define LANG_HOOKS_GIMPLIFY_EXPR c_gimplify_expr
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#undef LANG_HOOKS_OMP_PREDETERMINED_SHARING
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#define LANG_HOOKS_OMP_PREDETERMINED_SHARING c_omp_predetermined_sharing
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#undef LANG_HOOKS_TREE_INLINING_VAR_MOD_TYPE_P
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#define LANG_HOOKS_TREE_INLINING_VAR_MOD_TYPE_P c_vla_unspec_p
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/* APPLE LOCAL begin radar 6353006 */
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#undef LANG_HOOKS_BUILD_GENERIC_BLOCK_STRUCT_TYPE
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#define LANG_HOOKS_BUILD_GENERIC_BLOCK_STRUCT_TYPE \
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c_build_generic_block_struct_type
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/* APPLE LOCAL end radar 6353006 */
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#endif /* GCC_C_OBJC_COMMON */
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