root/include/asm-mn10300/exceptions.h

INCLUDED FROM

/* MN10300 Microcontroller core exceptions
 *
 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public Licence
 * as published by the Free Software Foundation; either version
 * 2 of the Licence, or (at your option) any later version.
 */
#ifndef _ASM_EXCEPTIONS_H
#define _ASM_EXCEPTIONS_H

#include <linux/linkage.h>

/*
 * define the breakpoint instruction opcode to use
 * - note that the JTAG unit steals 0xFF, so we want to avoid that if we can
 *   (can use 0xF7)
 */
#define GDBSTUB_BKPT            0xFF

#ifndef __ASSEMBLY__

/*
 * enumeration of exception codes (as extracted from TBR MSW)
 */
enum exception_code {
        EXCEP_RESET             = 0x000000,     /* reset */

        /* MMU exceptions */
        EXCEP_ITLBMISS          = 0x000100,     /* instruction TLB miss */
        EXCEP_DTLBMISS          = 0x000108,     /* data TLB miss */
        EXCEP_IAERROR           = 0x000110,     /* instruction address */
        EXCEP_DAERROR           = 0x000118,     /* data address */

        /* system exceptions */
        EXCEP_TRAP              = 0x000128,     /* program interrupt (PI instruction) */
        EXCEP_ISTEP             = 0x000130,     /* single step */
        EXCEP_IBREAK            = 0x000150,     /* instruction breakpoint */
        EXCEP_OBREAK            = 0x000158,     /* operand breakpoint */
        EXCEP_PRIVINS           = 0x000160,     /* privileged instruction execution */
        EXCEP_UNIMPINS          = 0x000168,     /* unimplemented instruction execution */
        EXCEP_UNIMPEXINS        = 0x000170,     /* unimplemented extended instruction execution */
        EXCEP_MEMERR            = 0x000178,     /* illegal memory access */
        EXCEP_MISALIGN          = 0x000180,     /* misalignment */
        EXCEP_BUSERROR          = 0x000188,     /* bus error */
        EXCEP_ILLINSACC         = 0x000190,     /* illegal instruction access */
        EXCEP_ILLDATACC         = 0x000198,     /* illegal data access */
        EXCEP_IOINSACC          = 0x0001a0,     /* I/O space instruction access */
        EXCEP_PRIVINSACC        = 0x0001a8,     /* privileged space instruction access */
        EXCEP_PRIVDATACC        = 0x0001b0,     /* privileged space data access */
        EXCEP_DATINSACC         = 0x0001b8,     /* data space instruction access */
        EXCEP_DOUBLE_FAULT      = 0x000200,     /* double fault */

        /* FPU exceptions */
        EXCEP_FPU_DISABLED      = 0x0001c0,     /* FPU disabled */
        EXCEP_FPU_UNIMPINS      = 0x0001c8,     /* FPU unimplemented operation */
        EXCEP_FPU_OPERATION     = 0x0001d0,     /* FPU operation */

        /* interrupts */
        EXCEP_WDT               = 0x000240,     /* watchdog timer overflow */
        EXCEP_NMI               = 0x000248,     /* non-maskable interrupt */
        EXCEP_IRQ_LEVEL0        = 0x000280,     /* level 0 maskable interrupt */
        EXCEP_IRQ_LEVEL1        = 0x000288,     /* level 1 maskable interrupt */
        EXCEP_IRQ_LEVEL2        = 0x000290,     /* level 2 maskable interrupt */
        EXCEP_IRQ_LEVEL3        = 0x000298,     /* level 3 maskable interrupt */
        EXCEP_IRQ_LEVEL4        = 0x0002a0,     /* level 4 maskable interrupt */
        EXCEP_IRQ_LEVEL5        = 0x0002a8,     /* level 5 maskable interrupt */
        EXCEP_IRQ_LEVEL6        = 0x0002b0,     /* level 6 maskable interrupt */

        /* system calls */
        EXCEP_SYSCALL0          = 0x000300,     /* system call 0 */
        EXCEP_SYSCALL1          = 0x000308,     /* system call 1 */
        EXCEP_SYSCALL2          = 0x000310,     /* system call 2 */
        EXCEP_SYSCALL3          = 0x000318,     /* system call 3 */
        EXCEP_SYSCALL4          = 0x000320,     /* system call 4 */
        EXCEP_SYSCALL5          = 0x000328,     /* system call 5 */
        EXCEP_SYSCALL6          = 0x000330,     /* system call 6 */
        EXCEP_SYSCALL7          = 0x000338,     /* system call 7 */
        EXCEP_SYSCALL8          = 0x000340,     /* system call 8 */
        EXCEP_SYSCALL9          = 0x000348,     /* system call 9 */
        EXCEP_SYSCALL10         = 0x000350,     /* system call 10 */
        EXCEP_SYSCALL11         = 0x000358,     /* system call 11 */
        EXCEP_SYSCALL12         = 0x000360,     /* system call 12 */
        EXCEP_SYSCALL13         = 0x000368,     /* system call 13 */
        EXCEP_SYSCALL14         = 0x000370,     /* system call 14 */
        EXCEP_SYSCALL15         = 0x000378,     /* system call 15 */
};

extern void __set_intr_stub(enum exception_code code, void *handler);
extern void set_intr_stub(enum exception_code code, void *handler);
extern void set_jtag_stub(enum exception_code code, void *handler);

struct pt_regs;

extern asmlinkage void __common_exception(void);
extern asmlinkage void itlb_miss(void);
extern asmlinkage void dtlb_miss(void);
extern asmlinkage void itlb_aerror(void);
extern asmlinkage void dtlb_aerror(void);
extern asmlinkage void raw_bus_error(void);
extern asmlinkage void double_fault(void);
extern asmlinkage int  system_call(struct pt_regs *);
extern asmlinkage void fpu_exception(struct pt_regs *, enum exception_code);
extern asmlinkage void nmi(struct pt_regs *, enum exception_code);
extern asmlinkage void uninitialised_exception(struct pt_regs *,
                                               enum exception_code);
extern asmlinkage void irq_handler(void);
extern asmlinkage void profile_handler(void);
extern asmlinkage void nmi_handler(void);
extern asmlinkage void misalignment(struct pt_regs *, enum exception_code);

extern void die(const char *, struct pt_regs *, enum exception_code)
        ATTRIB_NORET;

extern int die_if_no_fixup(const char *, struct pt_regs *, enum exception_code);

#endif /* __ASSEMBLY__ */

#endif /* _ASM_EXCEPTIONS_H */