hardened_malloc/util.h
2018-10-23 01:11:31 -04:00

50 lines
1.1 KiB
C

#ifndef UTIL_H
#define UTIL_H
#include <stdint.h>
#include <stdnoreturn.h>
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
#define min(x, y) ({ \
__typeof__(x) _x = (x); \
__typeof__(y) _y = (y); \
(void) (&_x == &_y); \
_x < _y ? _x : _y; })
#define max(x, y) ({ \
__typeof__(x) _x = (x); \
__typeof__(y) _y = (y); \
(void) (&_x == &_y); \
_x > _y ? _x : _y; })
#define COLD __attribute__((cold))
#define UNUSED __attribute__((unused))
#define EXPORT __attribute__((visibility("default")))
#define STRINGIFY(s) #s
#define ALIAS(f) __attribute__((alias(STRINGIFY(f))))
static inline int ffzl(long x) {
return __builtin_ffsl(~x);
}
COLD noreturn void fatal_error(const char *s);
typedef uint8_t u8;
typedef uint16_t u16;
typedef uint32_t u32;
typedef uint64_t u64;
typedef unsigned __int128 u128;
#ifdef CONFIG_SEAL_METADATA
#if defined(__GLIBC__) && __GLIBC_PREREQ(2, 27) && defined(__x86_64__)
#define USE_PKEY
#else
#error "CONFIG_SEAL_METADATA requires Memory Protection Key support"
#endif
#endif
#endif