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Fix cross-builds after 4e5d32a445

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Add alignment macros to cross-build's sys/cdefs.h

Pull Request:	https://github.com/freebsd/freebsd-src/pull/531
MFC after:	immediately (build fix)
This commit is contained in:
Jose Luis Duran 2021-08-30 16:29:17 -03:00 committed by Alex Richardson
parent b5be5c35db
commit 94d9439b6b
1 changed files with 19 additions and 0 deletions
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19
tools/build/cross-build/include/common/sys/cdefs.h
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@ -255,3 +255,22 @@
#define __BSD_VISIBLE 1
#define __ISO_C_VISIBLE 2011
#define __EXT1_VISIBLE 1
/* Alignment builtins for better type checking and improved code generation. */
/* Provide fallback versions for other compilers (GCC/Clang < 10): */
#if !__has_builtin(__builtin_is_aligned)
#define __builtin_is_aligned(x, align) \
(((__uintptr_t)x & ((align) - 1)) == 0)
#endif
#if !__has_builtin(__builtin_align_up)
#define __builtin_align_up(x, align) \
((__typeof__(x))(((__uintptr_t)(x)+((align)-1))&(~((align)-1))))
#endif
#if !__has_builtin(__builtin_align_down)
#define __builtin_align_down(x, align) \
((__typeof__(x))((x)&(~((align)-1))))
#endif
#define __align_up(x, y) __builtin_align_up(x, y)
#define __align_down(x, y) __builtin_align_down(x, y)
#define __is_aligned(x, y) __builtin_is_aligned(x, y)