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2013-09-12 Sebastian Huber <sebastian.huber@embedded-brains.de>

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* libc/include/sys/cdefs.h: Synchronize with latest FreeBSD
        version.
        * libc/include/stdatomic.h: Likewise.
This commit is contained in:
Jeff Johnston
2013-09-12 22:05:43 +00:00
parent 45070312d4
commit 44d6d53977
3 changed files with 205 additions and 80 deletions
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86
newlib/libc/include/sys/cdefs.h
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@ -66,6 +66,23 @@
# define __ptrvalue /* nothing */
#endif
/*
* Testing against Clang-specific extensions.
*/
#ifndef __has_extension
#define __has_extension __has_feature
#endif
#ifndef __has_feature
#define __has_feature(x) 0
#endif
#ifndef __has_include
#define __has_include(x) 0
#endif
#ifndef __has_builtin
#define __has_builtin(x) 0
#endif
#if defined(__cplusplus)
#define __BEGIN_DECLS extern "C" {
#define __END_DECLS }
@ -252,23 +269,45 @@
/*
* Keywords added in C11.
*/
#if defined(__cplusplus) && __cplusplus >= 201103L
#define _Alignas(e) alignas(e)
#define _Alignof(e) alignof(e)
#define _Noreturn [[noreturn]]
#define _Static_assert(e, s) static_assert(e, s)
/* FIXME: change this to thread_local when clang in base supports it */
#define _Thread_local __thread
#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
/* Do nothing. They are language keywords. */
#if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 201112L
#if !__has_extension(c_alignas)
#if (defined(__cplusplus) && __cplusplus >= 201103L) || \
__has_extension(cxx_alignas)
#define _Alignas(x) alignas(x)
#else
/* Not supported. Implement them using our versions. */
/* XXX: Only emulates _Alignas(constant-expression); not _Alignas(type-name). */
#define _Alignas(x) __aligned(x)
#endif
#endif
#if defined(__cplusplus) && __cplusplus >= 201103L
#define _Alignof(x) alignof(x)
#else
#define _Alignof(x) __alignof(x)
#endif
#if !__has_extension(c_atomic) && !__has_extension(cxx_atomic)
/*
* No native support for _Atomic(). Place object in structure to prevent
* most forms of direct non-atomic access.
*/
#define _Atomic(T) struct { T volatile __val; }
#endif
#if defined(__cplusplus) && __cplusplus >= 201103L
#define _Noreturn [[noreturn]]
#else
#define _Noreturn __dead2
#define _Thread_local __thread
#endif
#if __GNUC_PREREQ__(4, 6) && !defined(__cplusplus)
/* Do nothing: _Static_assert() works as per C11 */
#elif !__has_extension(c_static_assert)
#if (defined(__cplusplus) && __cplusplus >= 201103L) || \
__has_extension(cxx_static_assert)
#define _Static_assert(x, y) static_assert(x, y)
#elif defined(__COUNTER__)
#define _Static_assert(x, y) __Static_assert(x, __COUNTER__)
#define __Static_assert(x, y) ___Static_assert(x, y)
@ -278,6 +317,18 @@
#endif
#endif
#if !__has_extension(c_thread_local)
/* XXX: Change this to test against C++11 when clang in base supports it. */
#if /* (defined(__cplusplus) && __cplusplus >= 201103L) || */ \
__has_extension(cxx_thread_local)
#define _Thread_local thread_local
#else
#define _Thread_local __thread
#endif
#endif
#endif /* __STDC_VERSION__ || __STDC_VERSION__ < 201112L */
/*
* Emulation of C11 _Generic(). Unlike the previously defined C11
* keywords, it is not possible to implement this using exactly the same
@ -650,17 +701,4 @@
#endif
#endif
#ifndef __has_extension
#define __has_extension __has_feature
#endif
#ifndef __has_feature
#define __has_feature(x) 0
#endif
#ifndef __has_include
#define __has_include(x) 0
#endif
#ifndef __has_builtin
#define __has_builtin(x) 0
#endif
#endif /* !_SYS_CDEFS_H_ */