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meso: skeleton libmesosphere in prep for kernelldr dev

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Michael Scire 2019-12-12 06:29:37 -08:00 • committed by SciresM
parent 0b0fdc5c58
commit 36c47a0014
22 changed files with 732 additions and 13 deletions
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17
libraries/libvapours/include/vapours/defines.hpp
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@ -33,8 +33,10 @@
#define ALIGNED(algn) __attribute__((aligned(algn)))
#define NORETURN __attribute__((noreturn))
#define WEAK __attribute__((weak))
#define WEAK_SYMBOL __attribute__((weak))
#define ALWAYS_INLINE inline __attribute__((always_inline))
#define CONST_FOLD(x) (__builtin_constant_p(x) ? (x) : (x))
#define CONCATENATE_IMPL(S1, s2) s1##s2
#define CONCATENATE(s1, s2) CONCATENATE_IMPL(s1, s2)
@ -44,3 +46,16 @@
#else
#define ANONYMOUS_VARIABLE(pref) CONCATENATE(pref, __LINE__)
#endif
#define AMS_PREDICT(expr, value, _probability) __builtin_expect_with_probability(expr, value, ({ \
constexpr double probability = _probability; \
static_assert(0.0 <= probability); \
static_assert(probability <= 1.0); \
probability; \
}))
#define AMS_PREDICT_TRUE(expr, probability) AMS_PREDICT(!!expr, 1, probability)
#define AMS_PREDICT_FALSE(expr, probability) AMS_PREDICT(!!expr, 0, probability)
#define AMS_LIKELY(expr) AMS_PREDICT_TRUE(expr, 1.0)
#define AMS_UNLIKELY(expr) AMS_PREDICT_FALSE(expr, 1.0)