diff options
Diffstat (limited to 'usr/src/compat/freebsd/sys/cdefs.h')
| -rw-r--r-- | usr/src/compat/freebsd/sys/cdefs.h | 67 |
1 files changed, 43 insertions, 24 deletions
diff --git a/usr/src/compat/freebsd/sys/cdefs.h b/usr/src/compat/freebsd/sys/cdefs.h index 974e323dbe..0b857437e3 100644 --- a/usr/src/compat/freebsd/sys/cdefs.h +++ b/usr/src/compat/freebsd/sys/cdefs.h @@ -11,48 +11,67 @@ /* * Copyright 2013 Pluribus Networks Inc. + * Copyright 2017 Joyent, Inc. */ #ifndef _COMPAT_FREEBSD_SYS_CDEFS_H_ #define _COMPAT_FREEBSD_SYS_CDEFS_H_ +/* + * Testing against Clang-specific extensions. + */ +#ifndef __has_extension +#define __has_extension __has_feature +#endif +#ifndef __has_feature +#define __has_feature(x) 0 +#endif + +/* + * Macro to test if we're using a specific version of gcc or later. + */ +#if defined(__GNUC__) && !defined(__INTEL_COMPILER) +#define __GNUC_PREREQ__(ma, mi) \ + (__GNUC__ > (ma) || __GNUC__ == (ma) && __GNUC_MINOR__ >= (mi)) +#else +#define __GNUC_PREREQ__(ma, mi) 0 +#endif + #define __FBSDID(s) #ifdef __GNUC__ +#define asm __asm #define inline __inline #define __GNUCLIKE___SECTION 1 #define __dead2 __attribute__((__noreturn__)) -#define __unused __attribute__((__unused__)) #define __used __attribute__((__used__)) #define __packed __attribute__((__packed__)) #define __aligned(x) __attribute__((__aligned__(x))) #define __section(x) __attribute__((__section__(x))) +#define __weak_symbol __attribute__((__weak__)) #endif -/* - * The __CONCAT macro is used to concatenate parts of symbol names, e.g. - * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo. - * The __CONCAT macro is a bit tricky to use if it must work in non-ANSI - * mode -- there must be no spaces between its arguments, and for nested - * __CONCAT's, all the __CONCAT's must be at the left. __CONCAT can also - * concatenate double-quoted strings produced by the __STRING macro, but - * this only works with ANSI C. - * - * __XSTRING is like __STRING, but it expands any macros in its argument - * first. It is only available with ANSI C. - */ -#if defined(__STDC__) || defined(__cplusplus) -#define __P(protos) protos /* full-blown ANSI C */ -#define __CONCAT1(x,y) x ## y -#define __CONCAT(x,y) __CONCAT1(x,y) -#define __STRING(x) #x /* stringify without expanding x */ -#define __XSTRING(x) __STRING(x) /* expand x, then stringify */ -#else /* !(__STDC__ || __cplusplus) */ -#define __P(protos) () /* traditional C preprocessor */ -#define __CONCAT(x,y) x/**/y -#define __STRING(x) "x" -#endif /* !(__STDC__ || __cplusplus) */ +#if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 201112L || defined(lint) + +#if !__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 __GNUC_PREREQ__(4,6) +/* Nothing, gcc 4.6 and higher has _Static_assert built-in */ +#elif defined(__COUNTER__) +#define _Static_assert(x, y) __Static_assert(x, __COUNTER__) +#define __Static_assert(x, y) ___Static_assert(x, y) +#define ___Static_assert(x, y) typedef char __assert_ ## y[(x) ? 1 : -1] \ + __unused +#else +#define _Static_assert(x, y) struct __hack +#endif +#endif +#define static_assert(x, y) _Static_assert(x, y) + +#endif /* __STDC_VERSION__ || __STDC_VERSION__ < 201112L */ #endif /* _COMPAT_FREEBSD_SYS_CDEFS_H_ */ |