Archipelago » qemu

/*

 * Generic ARM Programmable Interrupt Controller support.

 *

 * Copyright (c) 2006 CodeSourcery.

 * Written by Paul Brook

 *

 * This code is licenced under the LGPL

 */

#include "vl.h"

#include "arm_pic.h"

/* Stub functions for hardware that doesn't exist.  */

void pic_info(void)

{

}

void irq_info(void)

{

}

/* Input 0 is IRQ and input 1 is FIQ.  */

static void arm_pic_cpu_handler(void *opaque, int irq, int level)

{

    CPUState *env = (CPUState *)opaque;

    switch (irq) {

    case ARM_PIC_CPU_IRQ:

        if (level)

            cpu_interrupt(env, CPU_INTERRUPT_HARD);

        else

            cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);

        break;

    case ARM_PIC_CPU_FIQ:

        if (level)

            cpu_interrupt(env, CPU_INTERRUPT_FIQ);

        else

            cpu_reset_interrupt(env, CPU_INTERRUPT_FIQ);

        break;

    default:

        cpu_abort(env, "arm_pic_cpu_handler: Bad interrput line %d\n", irq);

    }

}

qemu_irq *arm_pic_init_cpu(CPUState *env)

{

    return qemu_allocate_irqs(arm_pic_cpu_handler, env, 2);

}