#ifndef AVREMU_UTIL_H_
#define AVREMU_UTIL_H_

#ifndef __GNUC__
# error "Not using the GNU GCC compiler."
#endif

#include "list.h"
#include <stdint.h>
#include <stdlib.h>


#define likely(x)		__builtin_expect(!!(x), 1)
#define unlikely(x)		__builtin_expect(!!(x), 0)

#ifdef RUNTIME_SANITY_CHECKS
# define CHECK(x)	unlikely(x)
#else
# define CHECK(x)	0
#endif

#define ARRAY_SIZE(x)		(sizeof(x)/sizeof((x)[0]))

#define is_const_value(x)	__builtin_constant_p(x)

/* Force reload a variable from memory. */
#define reload_var(x)		(*((volatile typeof(x) *)&(x)))

/* Break the linkage of the binary, if the constant condition is true.
 * This is useful for compiletime checks of constant values. */
#define break_linkage_on(constant_condition, reason) do {	\
	if (constant_condition) {				\
		extern void __avremu_bug__##reason(void);	\
		__avremu_bug__##reason();			\
	}							\
} while (0)

#define __stringify(x)		#x
#define stringify(x)		__stringify(x)


typedef uint16_t	le16_t;
typedef uint32_t	le32_t;
typedef _Bool		bool;


static inline uint16_t swap16(uint16_t x)
{
	return (x >> 8) | (x << 8);
}

static inline uint16_t le16_to_cpu(le16_t x)
{
#ifdef BIG_ENDIAN_HOST
	return swap16((uint16_t)x);
#else
	return (uint16_t)x;
#endif
}

static inline le16_t cpu_to_le16(uint16_t x)
{
#ifdef BIG_ENDIAN_HOST
	return (le16_t)swap16(x);
#else
	return (le16_t)x;
#endif
}


void * avr_malloc(size_t size);


#endif /* AVREMU_UTIL_H_ */