max80_fw/fw/fw.h

#ifndef FW_H
#define FW_H

#include <stdarg.h>
#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
#include "picorv32.h"

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

extern void __attribute__((noreturn)) _die(void);
extern void __attribute__((noreturn)) exit(int);
extern void __attribute__((noreturn)) _exit(int);

extern const uint8_t _end[];
extern void *_sbrk(size_t);

extern int disk_init(void);

#define IRQ_VECTORS	32

typedef void (*irq_handler_t)(unsigned int vector);
extern irq_handler_t
register_irq(unsigned int vector, irq_handler_t handler, bool enable);
extern void null_irq_handler(unsigned int vector);

static inline unsigned int mask_irq(unsigned int vector)
{
    const uint32_t mask = 1U << vector;
    return p_maskirq(mask, ~mask);
}
static inline unsigned int unmask_irq(unsigned int vector)
{
    const uint32_t mask = 1U << vector;
    return p_maskirq(0, ~mask);
}
static inline unsigned int irqmask(void)
{
    return p_maskirq(0, ~0);
}

#endif /* FW_H */