irq_32.c

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/*
 * SHcompact 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>

void notrace arch_local_irq_restore(unsigned long flags)
{
    unsigned long __dummy0, __dummy1;

    if (flags == ARCH_IRQ_DISABLED) {
        __asm__ __volatile__ (
            "stc    sr, %0\n\t"
            "or #0xf0, %0\n\t"
            "ldc    %0, sr\n\t"
            : "=&z" (__dummy0)
            : /* no inputs */
            : "memory"
        );
    } else {
        __asm__ __volatile__ (
            "stc    sr, %0\n\t"
            "and    %1, %0\n\t"
#ifdef CONFIG_CPU_HAS_SR_RB
            "stc    r6_bank, %1\n\t"
            "or %1, %0\n\t"
#endif
            "ldc    %0, sr\n\t"
            : "=&r" (__dummy0), "=r" (__dummy1)
            : "1" (~ARCH_IRQ_DISABLED)
            : "memory"
        );
    }
}
EXPORT_SYMBOL(arch_local_irq_restore);

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

    __asm__ __volatile__ (
        "stc    sr, %0\n\t"
        "and    #0xf0, %0\n\t"
        : "=&z" (flags)
        : /* no inputs */
        : "memory"
    );

    return flags;
}
EXPORT_SYMBOL(arch_local_save_flags);