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/
Test


			
				
					
						
						
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							/*

 * Preliminary support for HW exception handing for Microblaze

 *

 * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>

 * Copyright (C) 2008-2009 PetaLogix

 * Copyright (C) 2005 John Williams <jwilliams@itee.uq.edu.au>

 *

 * 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.

 */

#ifndef _ASM_MICROBLAZE_EXCEPTIONS_H
#define _ASM_MICROBLAZE_EXCEPTIONS_H

#ifdef __KERNEL__

#ifndef CONFIG_MMU
#define EX_HANDLER_STACK_SIZ	(4*19)
#endif

#ifndef __ASSEMBLY__

/* Macros to enable and disable HW exceptions in the MSR */
/* Define MSR enable bit for HW exceptions */
#define HWEX_MSR_BIT (1 << 8)

#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
#define __enable_hw_exceptions()					\

	__asm__ __volatile__ ("	msrset	r0, %0;				\

				nop;"					\

				:					\

				: "i" (HWEX_MSR_BIT)			\

				: "memory")

#define __disable_hw_exceptions()					\

	__asm__ __volatile__ ("	msrclr r0, %0;				\

				nop;"					\

				:					\

				: "i" (HWEX_MSR_BIT)			\

				: "memory")
#else /* !CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
#define __enable_hw_exceptions()					\

	__asm__ __volatile__ ("						\

				mfs	r12, rmsr;			\

				nop;					\

				ori	r12, r12, %0;			\

				mts	rmsr, r12;			\

				nop;"					\

				:					\

				: "i" (HWEX_MSR_BIT)			\

				: "memory", "r12")

#define __disable_hw_exceptions()					\

	__asm__ __volatile__ ("						\

				mfs	r12, rmsr;			\

				nop;					\

				andi	r12, r12, ~%0;			\

				mts	rmsr, r12;			\

				nop;"					\

				:					\

				: "i" (HWEX_MSR_BIT)			\

				: "memory", "r12")
#endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */

asmlinkage void full_exception(struct pt_regs *regs, unsigned int type,
							int fsr, int addr);

asmlinkage void sw_exception(struct pt_regs *regs);
void bad_page_fault(struct pt_regs *regs, unsigned long address, int sig);

void die(const char *str, struct pt_regs *fp, long err);
void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr);

#endif /*__ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_MICROBLAZE_EXCEPTIONS_H */