69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
#ifndef UTIL_H
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#define UTIL_H
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#include <stdint.h>
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#include <stdnoreturn.h>
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#define likely(x) __builtin_expect(!!(x), 1)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#define min(x, y) ({ \
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__typeof__(x) _x = (x); \
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__typeof__(y) _y = (y); \
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(void) (&_x == &_y); \
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_x < _y ? _x : _y; })
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#define max(x, y) ({ \
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__typeof__(x) _x = (x); \
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__typeof__(y) _y = (y); \
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(void) (&_x == &_y); \
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_x > _y ? _x : _y; })
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#define COLD __attribute__((cold))
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#define UNUSED __attribute__((unused))
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#define EXPORT __attribute__((visibility("default")))
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#define STRINGIFY(s) #s
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#define ALIAS(f) __attribute__((alias(STRINGIFY(f))))
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static inline int ffzl(long x) {
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return __builtin_ffsl(~x);
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}
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COLD noreturn void fatal_error(const char *s);
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typedef uint8_t u8;
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typedef uint16_t u16;
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typedef uint32_t u32;
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typedef uint64_t u64;
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typedef unsigned __int128 u128;
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// use __register_atfork directly to avoid linking with libpthread for glibc < 2.28
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#ifdef __GLIBC__
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#if !__GLIBC_PREREQ(2, 28)
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extern void *__dso_handle;
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extern int __register_atfork(void (*)(void), void (*)(void), void (*)(void), void *);
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#define atfork(prepare, parent, child) __register_atfork(prepare, parent, child, __dso_handle)
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#endif
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#endif
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#ifndef atfork
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#define atfork pthread_atfork
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#endif
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#ifdef CONFIG_SEAL_METADATA
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#ifdef __GLIBC__
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#if __GLIBC_PREREQ(2, 27)
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#define USE_PKEY
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#endif
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#endif
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#ifndef USE_PKEY
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#error "CONFIG_SEAL_METADATA requires Memory Protection Key support"
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#endif
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#endif // CONFIG_SEAL_METADATA
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#endif
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