vectors.c

Go to the documentation of this file.

/***************************************************************************/

/*
 *  linux/arch/m68knommu/platform/coldfire/vectors.c
 *
 *  Copyright (C) 1999-2007, Greg Ungerer <[email protected]>
 */

/***************************************************************************/

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <asm/traps.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfwdebug.h>

/***************************************************************************/

#ifdef TRAP_DBG_INTERRUPT

asmlinkage void dbginterrupt_c(struct frame *fp)
{
    extern void dump(struct pt_regs *fp);
    printk(KERN_DEBUG "%s(%d): BUS ERROR TRAP\n", __FILE__, __LINE__);
    dump((struct pt_regs *) fp);
    asm("halt");
}

#endif

/***************************************************************************/

/* Assembler routines */
asmlinkage void buserr(void);
asmlinkage void trap(void);
asmlinkage void system_call(void);
asmlinkage void inthandler(void);

void __init trap_init(void)
{
    int i;

    /*
     *  There is a common trap handler and common interrupt
     *  handler that handle almost every vector. We treat
     *  the system call and bus error special, they get their
     *  own first level handlers.
     */
    for (i = 3; (i <= 23); i++)
        _ramvec[i] = trap;
    for (i = 33; (i <= 63); i++)
        _ramvec[i] = trap;
    for (i = 24; (i <= 31); i++)
        _ramvec[i] = inthandler;
    for (i = 64; (i < 255); i++)
        _ramvec[i] = inthandler;
    _ramvec[255] = 0;

    _ramvec[2] = buserr;
    _ramvec[32] = system_call;

#ifdef TRAP_DBG_INTERRUPT
    _ramvec[12] = dbginterrupt;
#endif
}

/***************************************************************************/