irq_64.c

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/*
 * SHmedia irqflags support
 *
 * Copyright (C) 2006 - 2009 Paul Mundt
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License. See the file "COPYING" in the main directory of this archive
 * for more details.
 */
#include <linux/irqflags.h>
#include <linux/module.h>
#include <cpu/registers.h>

void notrace arch_local_irq_restore(unsigned long flags)
{
    unsigned long long __dummy;

    if (flags == ARCH_IRQ_DISABLED) {
        __asm__ __volatile__ (
            "getcon " __SR ", %0\n\t"
            "or %0, %1, %0\n\t"
            "putcon %0, " __SR "\n\t"
            : "=&r" (__dummy)
            : "r" (ARCH_IRQ_DISABLED)
        );
    } else {
        __asm__ __volatile__ (
            "getcon " __SR ", %0\n\t"
            "and    %0, %1, %0\n\t"
            "putcon %0, " __SR "\n\t"
            : "=&r" (__dummy)
            : "r" (~ARCH_IRQ_DISABLED)
        );
    }
}
EXPORT_SYMBOL(arch_local_irq_restore);

unsigned long notrace arch_local_save_flags(void)
{
    unsigned long flags;

    __asm__ __volatile__ (
        "getcon " __SR ", %0\n\t"
        "and    %0, %1, %0"
        : "=&r" (flags)
        : "r" (ARCH_IRQ_DISABLED)
    );

    return flags;
}
EXPORT_SYMBOL(arch_local_save_flags);