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/*

 * Low-level irq routines.

 *

 * Copyright (C) 2010 B Labs Ltd.

 * Written by  Bahadir Balban

 * Prem Mallappa <prem.mallappa@b-labs.co.uk>

 */

void irq_local_disable_save(unsigned long *state)

{

        unsigned int tmp, tmp2;

        __asm__ __volatile__ (

                "mrs %0, cpsr_fc \n"

                "orr %1, %0, #0x80 \n"

                "msr cpsr_fc, %1 \n"

                : "=&r"(tmp), "=r"(tmp2)

                :

                : "cc"

                );

        *state = tmp;

}

void irq_local_restore(unsigned long state)

{

        __asm__ __volatile__ (

                "msr cpsr_fc, %0\n"

                :

                : "r"(state)

                : "cc"

                );

}

int irqs_enabled(void)

{

        int tmp;

        __asm__ __volatile__ (

                "mrs %0, cpsr_fc\n"

                : "=r"(tmp)

                );

        if (tmp & 0x80)

                return 0;

        return 1;

}