/*
 * Copyright 2005-2021, Haiku Inc. All rights reserved.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *              Axel Dörfler <axeld@pinc-software.de>
 *              Ingo Weinhold <bonefish@cs.tu-berlin.de>
 *              Adrien Destugues <pulkomandy@pulkomandy.tk>
 */
#ifndef _KERNEL_ARCH_SPARC_INT_H
#define _KERNEL_ARCH_SPARC_INT_H

#include <SupportDefs.h>

#define NUM_IO_VECTORS  256

static inline void
arch_int_enable_interrupts_inline(void)
{
        int tmp;
        asm volatile(
                "rdpr %%pstate, %0\n"
                "or %0, 2, %0\n"
                "wrpr %0, %%pstate\n"
                : "=r" (tmp)
        );
}


static inline int
arch_int_disable_interrupts_inline(void)
{
        int flags;
        int tmp;
        asm volatile(
                "rdpr %%pstate, %0\n"
                "andn %0, 2, %1\n"
                "wrpr %1, %%pstate\n"
                : "=r" (flags), "=r" (tmp)
        );
        return flags & 2;
}


static inline void
arch_int_restore_interrupts_inline(int oldState)
{
        if (oldState)
                arch_int_enable_interrupts_inline();
}


static inline bool
arch_int_are_interrupts_enabled_inline(void)
{
        int flags;
        asm volatile(
                "rdpr %%pstate, %0\n"
                : "=r" (flags)
        );

        return flags & 2;
}


// map the functions to the inline versions
#define arch_int_enable_interrupts()    arch_int_enable_interrupts_inline()
#define arch_int_disable_interrupts()   arch_int_disable_interrupts_inline()
#define arch_int_restore_interrupts(status)     \
        arch_int_restore_interrupts_inline(status)
#define arch_int_are_interrupts_enabled()       \
        arch_int_are_interrupts_enabled_inline()


#endif /* _KERNEL_ARCH_SPARC_INT_H */