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#ifndef __COMPILER_H
#define __COMPILER_H
// Low level definitions for C languange and gcc compiler.
#define barrier() __asm__ __volatile__("": : :"memory")
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
#define noinline __attribute__((noinline))
#ifndef __always_inline
#define __always_inline inline __attribute__((always_inline))
#endif
#define __visible __attribute__((externally_visible))
#define __noreturn __attribute__((noreturn))
#define PACKED __attribute__((packed))
#define __aligned(x) __attribute__((aligned(x)))
#define __section(S) __attribute__((section(S)))
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
#define ALIGN_DOWN(x,a) ((x) & ~((typeof(x))(a)-1))
#define container_of(ptr, type, member) ({ \
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})
#define __stringify_1(x) #x
#define __stringify(x) __stringify_1(x)
#define ___PASTE(a,b) a##b
#define __PASTE(a,b) ___PASTE(a,b)
#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
#define DIV_ROUND_CLOSEST(x, divisor)({ \
typeof(divisor) __divisor = divisor; \
(((x) + ((__divisor) / 2)) / (__divisor)); \
})
static inline void writel(void *addr, uint32_t val) {
*(volatile uint32_t *)addr = val;
}
static inline void writew(void *addr, uint16_t val) {
*(volatile uint16_t *)addr = val;
}
static inline void writeb(void *addr, uint8_t val) {
*(volatile uint8_t *)addr = val;
}
static inline uint32_t readl(const void *addr) {
return *(volatile const uint32_t *)addr;
}
static inline uint16_t readw(const void *addr) {
return *(volatile const uint16_t *)addr;
}
static inline uint8_t readb(const void *addr) {
return *(volatile const uint8_t *)addr;
}
#endif // compiler.h
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