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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/m68k/platform/coldfire/vectors.c
10818 views
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/***************************************************************************/

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/*

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 *	linux/arch/m68knommu/platform/coldfire/vectors.c

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 *

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 *	Copyright (C) 1999-2007, Greg Ungerer <[email protected]>

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 */

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

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#include <linux/kernel.h>

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#include <linux/init.h>

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#include <linux/irq.h>

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#include <asm/traps.h>

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#include <asm/machdep.h>

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#include <asm/coldfire.h>

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#include <asm/mcfsim.h>

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#include <asm/mcfwdebug.h>

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

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#ifdef TRAP_DBG_INTERRUPT

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asmlinkage void dbginterrupt_c(struct frame *fp)

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{

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	extern void dump(struct pt_regs *fp);

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	printk(KERN_DEBUG "%s(%d): BUS ERROR TRAP\n", __FILE__, __LINE__);

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	dump((struct pt_regs *) fp);

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	asm("halt");

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}

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#endif

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

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extern e_vector	*_ramvec;

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void set_evector(int vecnum, void (*handler)(void))

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{

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	if (vecnum >= 0 && vecnum <= 255)

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		_ramvec[vecnum] = handler;

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}

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

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/* Assembler routines */

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asmlinkage void buserr(void);

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asmlinkage void trap(void);

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asmlinkage void system_call(void);

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asmlinkage void inthandler(void);

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void __init init_vectors(void)

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{

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	int i;

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	/*

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	 *	There is a common trap handler and common interrupt

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	 *	handler that handle almost every vector. We treat

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	 *	the system call and bus error special, they get their

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	 *	own first level handlers.

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	 */

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	for (i = 3; (i <= 23); i++)

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		_ramvec[i] = trap;

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	for (i = 33; (i <= 63); i++)

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		_ramvec[i] = trap;

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	for (i = 24; (i <= 31); i++)

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		_ramvec[i] = inthandler;

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	for (i = 64; (i < 255); i++)

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		_ramvec[i] = inthandler;

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	_ramvec[255] = 0;

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	_ramvec[2] = buserr;

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	_ramvec[32] = system_call;

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#ifdef TRAP_DBG_INTERRUPT

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	_ramvec[12] = dbginterrupt;

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#endif

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}

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

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