arch/blackfin/include/asm/traps.h

/*
 *  Copyright 2004-2009 Analog Devices Inc.
 *                 2001 Lineo, Inc
 *                        Tony Kou
 *                 1993 Hamish Macdonald
 *
 * Licensed under the GPL-2
 */

#ifndef _BFIN_TRAPS_H
#define _BFIN_TRAPS_H

#define VEC_SYS		(0)
#define VEC_EXCPT01	(1)
#define VEC_EXCPT02	(2)
#define VEC_EXCPT03	(3)
#define VEC_EXCPT04	(4)
#define VEC_EXCPT05	(5)
#define VEC_EXCPT06	(6)
#define VEC_EXCPT07	(7)
#define VEC_EXCPT08	(8)
#define VEC_EXCPT09	(9)
#define VEC_EXCPT10	(10)
#define VEC_EXCPT11	(11)
#define VEC_EXCPT12	(12)
#define VEC_EXCPT13	(13)
#define VEC_EXCPT14	(14)
#define VEC_EXCPT15	(15)
#define VEC_STEP	(16)
#define VEC_OVFLOW	(17)
#define VEC_UNDEF_I	(33)
#define VEC_ILGAL_I	(34)
#define VEC_CPLB_VL	(35)
#define VEC_MISALI_D	(36)
#define VEC_UNCOV	(37)
#define VEC_CPLB_M	(38)
#define VEC_CPLB_MHIT	(39)
#define VEC_WATCH	(40)
#define VEC_ISTRU_VL	(41)	/*ADSP-BF535 only (MH) */
#define VEC_MISALI_I	(42)
#define VEC_CPLB_I_VL	(43)
#define VEC_CPLB_I_M	(44)
#define VEC_CPLB_I_MHIT	(45)
#define VEC_ILL_RES	(46)	/* including unvalid supervisor mode insn */
/* The hardware reserves (63) for future use - we use it to tell our
 * normal exception handling code we have a hardware error
 */
#define VEC_HWERR	(63)

#ifndef __ASSEMBLY__

#define HWC_x2(level) \
	"System MMR Error\n" \
	level " - An error occurred due to an invalid access to an System MMR location\n" \
	level "   Possible reason: a 32-bit register is accessed with a 16-bit instruction\n" \
	level "   or a 16-bit register is accessed with a 32-bit instruction.\n"
#define HWC_x3(level) \
	"External Memory Addressing Error\n"
#define EXC_0x04(level) \
	"Unimplmented exception occurred\n" \
	level " - Maybe you forgot to install a custom exception handler?\n"
#define HWC_x12(level) \
	"Performance Monitor Overflow\n"
#define HWC_x18(level) \
	"RAISE 5 instruction\n" \
	level "    Software issued a RAISE 5 instruction to invoke the Hardware\n"
#define HWC_default(level) \
	 "Reserved\n"
#define EXC_0x03(level) \
	"Application stack overflow\n" \
	level " - Please increase the stack size of the application using elf2flt -s option,\n" \
	level "   and/or reduce the stack use of the application.\n"
#define EXC_0x10(level) \
	"Single step\n" \
	level " - When the processor is in single step mode, every instruction\n" \
	level "   generates an exception. Primarily used for debugging.\n"
#define EXC_0x11(level) \
	"Exception caused by a trace buffer full condition\n" \
	level " - The processor takes this exception when the trace\n" \
	level "   buffer overflows (only when enabled by the Trace Unit Control register).\n"
#define EXC_0x21(level) \
	"Undefined instruction\n" \
	level " - May be used to emulate instructions that are not defined for\n" \
	level "   a particular processor implementation.\n"
#define EXC_0x22(level) \
	"Illegal instruction combination\n" \
	level " - See section for multi-issue rules in the Blackfin\n" \
	level "   Processor Instruction Set Reference.\n"
#define EXC_0x23(level) \
	"Data access CPLB protection violation\n" \
	level " - Attempted read or write to Supervisor resource,\n" \
	level "   or illegal data memory access. \n"
#define EXC_0x24(level) \
	"Data access misaligned address violation\n" \
	level " - Attempted misaligned data memory or data cache access.\n"
#define EXC_0x25(level) \
	"Unrecoverable event\n" \
	level " - For example, an exception generated while processing a previous exception.\n"
#define EXC_0x26(level) \
	"Data access CPLB miss\n" \
	level " - Used by the MMU to signal a CPLB miss on a data access.\n"
#define EXC_0x27(level) \
	"Data access multiple CPLB hits\n" \
	level " - More than one CPLB entry matches data fetch address.\n"
#define EXC_0x28(level) \
	"Program Sequencer Exception caused by an emulation watchpoint match\n" \
	level " - There is a watchpoint match, and one of the EMUSW\n" \
	level "   bits in the Watchpoint Instruction Address Control register (WPIACTL) is set.\n"
#define EXC_0x2A(level) \
	"Instruction fetch misaligned address violation\n" \
	level " - Attempted misaligned instruction cache fetch.\n"
#define EXC_0x2B(level) \
	"CPLB protection violation\n" \
	level " - Illegal instruction fetch access (memory protection violation).\n"
#define EXC_0x2C(level) \
	"Instruction fetch CPLB miss\n" \
	level " - CPLB miss on an instruction fetch.\n"
#define EXC_0x2D(level) \
	"Instruction fetch multiple CPLB hits\n" \
	level " - More than one CPLB entry matches instruction fetch address.\n"
#define EXC_0x2E(level) \
	"Illegal use of supervisor resource\n" \
	level " - Attempted to use a Supervisor register or instruction from User mode.\n" \
	level "   Supervisor resources are registers and instructions that are reserved\n" \
	level "   for Supervisor use: Supervisor only registers, all MMRs, and Supervisor\n" \
	level "   only instructions.\n"

extern void double_fault_c(struct pt_regs *fp);

#endif				/* __ASSEMBLY__ */
#endif				/* _BFIN_TRAPS_H */