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 we want to avoid that if we can
  19  *   (can use 0xF7)
  20  */
  21 #define GDBSTUB_BKPT            0xFF
  22
  23 #ifndef __ASSEMBLY__
  24
  25 /*
  26  * enumeration of exception codes (as extracted from TBR MSW)
  27  */
  28 enum 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
  91 extern void __set_intr_stub(enum exception_code code, void *handler);
  92 extern void set_intr_stub(enum exception_code code, void *handler);
  93 extern void set_jtag_stub(enum exception_code code, void *handler);
  94
  95 struct pt_regs;
  96
  97 extern asmlinkage void __common_exception(void);
  98 extern asmlinkage void itlb_miss(void);
  99 extern asmlinkage void dtlb_miss(void);
 100 extern asmlinkage void itlb_aerror(void);
 101 extern asmlinkage void dtlb_aerror(void);
 102 extern asmlinkage void raw_bus_error(void);
 103 extern asmlinkage void double_fault(void);
 104 extern asmlinkage int  system_call(struct pt_regs *);
 105 extern asmlinkage void fpu_exception(struct pt_regs *, enum exception_code);
 106 extern asmlinkage void nmi(struct pt_regs *, enum exception_code);
 107 extern asmlinkage void uninitialised_exception(struct pt_regs *,
 108                                                enum exception_code);
 109 extern asmlinkage void irq_handler(void);
 110 extern asmlinkage void profile_handler(void);
 111 extern asmlinkage void nmi_handler(void);
 112 extern asmlinkage void misalignment(struct pt_regs *, enum exception_code);
 113
 114 extern void die(const char *, struct pt_regs *, enum exception_code)
 115         ATTRIB_NORET;
 116
 117 extern int die_if_no_fixup(const char *, struct pt_regs *, enum exception_code);
 118
 119 #endif /* __ASSEMBLY__ */
 120
 121 #endif /* _ASM_EXCEPTIONS_H */