LXR linux/arch/mn10300/include/asm/exceptions.h

   1/* MN10300 Microcontroller core exceptions
   2 *
   3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
   4 * Written by David Howells (dhowells@redhat.com)
   5 *
   6 * This program is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU General Public Licence
   8 * as published by the Free Software Foundation; either version
   9 * 2 of the Licence, or (at your option) any later version.
  10 */
  11#ifndef _ASM_EXCEPTIONS_H
  12#define _ASM_EXCEPTIONS_H
  13
  14#include <linux/linkage.h>
  15
  16/*
  17 * define the breakpoint instruction opcode to use
  18 * - note that the JTAG unit steals 0xFF, so you can't use JTAG and GDBSTUB at
  19 *   the same time.
  20 */
  21#define GDBSTUB_BKPT            0xFF
  22
  23#ifndef __ASSEMBLY__
  24
  25/*
  26 * enumeration of exception codes (as extracted from TBR MSW)
  27 */
  28enum exception_code {
  29        EXCEP_RESET             = 0x000000,     /* reset */
  30
  31        /* MMU exceptions */
  32        EXCEP_ITLBMISS          = 0x000100,     /* instruction TLB miss */
  33        EXCEP_DTLBMISS          = 0x000108,     /* data TLB miss */
  34        EXCEP_IAERROR           = 0x000110,     /* instruction address */
  35        EXCEP_DAERROR           = 0x000118,     /* data address */
  36
  37        /* system exceptions */
  38        EXCEP_TRAP              = 0x000128,     /* program interrupt (PI instruction) */
  39        EXCEP_ISTEP             = 0x000130,     /* single step */
  40        EXCEP_IBREAK            = 0x000150,     /* instruction breakpoint */
  41        EXCEP_OBREAK            = 0x000158,     /* operand breakpoint */
  42        EXCEP_PRIVINS           = 0x000160,     /* privileged instruction execution */
  43        EXCEP_UNIMPINS          = 0x000168,     /* unimplemented instruction execution */
  44        EXCEP_UNIMPEXINS        = 0x000170,     /* unimplemented extended instruction execution */
  45        EXCEP_MEMERR            = 0x000178,     /* illegal memory access */
  46        EXCEP_MISALIGN          = 0x000180,     /* misalignment */
  47        EXCEP_BUSERROR          = 0x000188,     /* bus error */
  48        EXCEP_ILLINSACC         = 0x000190,     /* illegal instruction access */
  49        EXCEP_ILLDATACC         = 0x000198,     /* illegal data access */
  50        EXCEP_IOINSACC          = 0x0001a0,     /* I/O space instruction access */
  51        EXCEP_PRIVINSACC        = 0x0001a8,     /* privileged space instruction access */
  52        EXCEP_PRIVDATACC        = 0x0001b0,     /* privileged space data access */
  53        EXCEP_DATINSACC         = 0x0001b8,     /* data space instruction access */
  54        EXCEP_DOUBLE_FAULT      = 0x000200,     /* double fault */
  55
  56        /* FPU exceptions */
  57        EXCEP_FPU_DISABLED      = 0x0001c0,     /* FPU disabled */
  58        EXCEP_FPU_UNIMPINS      = 0x0001c8,     /* FPU unimplemented operation */
  59        EXCEP_FPU_OPERATION     = 0x0001d0,     /* FPU operation */
  60
  61        /* interrupts */
  62        EXCEP_WDT               = 0x000240,     /* watchdog timer overflow */
  63        EXCEP_NMI               = 0x000248,     /* non-maskable interrupt */
  64        EXCEP_IRQ_LEVEL0        = 0x000280,     /* level 0 maskable interrupt */
  65        EXCEP_IRQ_LEVEL1        = 0x000288,     /* level 1 maskable interrupt */
  66        EXCEP_IRQ_LEVEL2        = 0x000290,     /* level 2 maskable interrupt */
  67        EXCEP_IRQ_LEVEL3        = 0x000298,     /* level 3 maskable interrupt */
  68        EXCEP_IRQ_LEVEL4        = 0x0002a0,     /* level 4 maskable interrupt */
  69        EXCEP_IRQ_LEVEL5        = 0x0002a8,     /* level 5 maskable interrupt */
  70        EXCEP_IRQ_LEVEL6        = 0x0002b0,     /* level 6 maskable interrupt */
  71
  72        /* system calls */
  73        EXCEP_SYSCALL0          = 0x000300,     /* system call 0 */
  74        EXCEP_SYSCALL1          = 0x000308,     /* system call 1 */
  75        EXCEP_SYSCALL2          = 0x000310,     /* system call 2 */
  76        EXCEP_SYSCALL3          = 0x000318,     /* system call 3 */
  77        EXCEP_SYSCALL4          = 0x000320,     /* system call 4 */
  78        EXCEP_SYSCALL5          = 0x000328,     /* system call 5 */
  79        EXCEP_SYSCALL6          = 0x000330,     /* system call 6 */
  80        EXCEP_SYSCALL7          = 0x000338,     /* system call 7 */
  81        EXCEP_SYSCALL8          = 0x000340,     /* system call 8 */
  82        EXCEP_SYSCALL9          = 0x000348,     /* system call 9 */
  83        EXCEP_SYSCALL10         = 0x000350,     /* system call 10 */
  84        EXCEP_SYSCALL11         = 0x000358,     /* system call 11 */
  85        EXCEP_SYSCALL12         = 0x000360,     /* system call 12 */
  86        EXCEP_SYSCALL13         = 0x000368,     /* system call 13 */
  87        EXCEP_SYSCALL14         = 0x000370,     /* system call 14 */
  88        EXCEP_SYSCALL15         = 0x000378,     /* system call 15 */
  89};
  90
  91extern void __set_intr_stub(enum exception_code code, void *handler);
  92extern void set_intr_stub(enum exception_code code, void *handler);
  93
  94struct pt_regs;
  95
  96extern asmlinkage void __common_exception(void);
  97extern asmlinkage void itlb_miss(void);
  98extern asmlinkage void dtlb_miss(void);
  99extern asmlinkage void itlb_aerror(void);
 100extern asmlinkage void dtlb_aerror(void);
 101extern asmlinkage void raw_bus_error(void);
 102extern asmlinkage void double_fault(void);
 103extern asmlinkage int  system_call(struct pt_regs *);
 104extern asmlinkage void nmi(struct pt_regs *, enum exception_code);
 105extern asmlinkage void uninitialised_exception(struct pt_regs *,
 106                                               enum exception_code);
 107extern asmlinkage void irq_handler(void);
 108extern asmlinkage void profile_handler(void);
 109extern asmlinkage void nmi_handler(void);
 110extern asmlinkage void misalignment(struct pt_regs *, enum exception_code);
 111
 112extern void die(const char *, struct pt_regs *, enum exception_code)
 113        __noreturn;
 114
 115extern int die_if_no_fixup(const char *, struct pt_regs *, enum exception_code);
 116
 117#define NUM2EXCEP_IRQ_LEVEL(num)        (EXCEP_IRQ_LEVEL0 + (num) * 8)
 118
 119#endif /* __ASSEMBLY__ */
 120
 121#endif /* _ASM_EXCEPTIONS_H */
 122