1 | /* debugmod.h |
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2 | * |
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3 | * This file contains definitions for the IBM/Motorola PowerPC |
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4 | * family members. |
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5 | * |
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6 | * Author: Andrew Bray <andy@i-cubed.co.uk> |
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7 | * |
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8 | * COPYRIGHT (c) 1995 by i-cubed ltd. |
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9 | * |
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10 | * MPC860 support code was added by Jay Monkman <jmonkman@frasca.com> |
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11 | * MPC8260 support added by Andy Dachs <a.dachs@sstl.co.uk> |
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12 | * Surrey Satellite Technology Limited |
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13 | * |
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14 | * To anyone who acknowledges that this file is provided "AS IS" |
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15 | * without any express or implied warranty: |
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16 | * permission to use, copy, modify, and distribute this file |
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17 | * for any purpose is hereby granted without fee, provided that |
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18 | * the above copyright notice and this notice appears in all |
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19 | * copies, and that the name of i-cubed limited not be used in |
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20 | * advertising or publicity pertaining to distribution of the |
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21 | * software without specific, written prior permission. |
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22 | * i-cubed limited makes no representations about the suitability |
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23 | * of this software for any purpose. |
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24 | * |
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25 | * Derived from c/src/exec/cpu/no_cpu/no_cpu.h: |
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26 | * |
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27 | * COPYRIGHT (c) 1989-1997. |
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28 | * On-Line Applications Research Corporation (OAR). |
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29 | * |
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30 | * The license and distribution terms for this file may in |
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31 | * the file LICENSE in this distribution or at |
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32 | * http://www.rtems.com/license/LICENSE. |
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33 | * |
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34 | * |
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35 | * Note: |
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36 | * This file is included by both C and assembler code ( -DASM ) |
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37 | * |
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38 | * $Id$ |
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39 | */ |
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40 | |
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41 | /* |
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42 | * FIXME: This file is not used anywhere inside of RTEMS source-tree. |
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43 | * Notify OAR if you actually use it, otherwise it might be removed in |
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44 | * future versions of RTEMS |
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45 | */ |
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46 | |
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47 | #ifndef _RTEMS_POWERPC_DEBUGMOD_H |
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48 | #define _RTEMS_POWERPC_DEBUGMOD_H |
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49 | |
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50 | #warning "please read the FIXME inside of this file" |
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51 | |
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52 | #ifdef __cplusplus |
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53 | extern "C" { |
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54 | #endif |
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55 | |
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56 | /* |
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57 | * This file contains the information required to build |
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58 | * RTEMS for a particular member of the PowerPC family. It does |
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59 | * this by setting variables to indicate which implementation |
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60 | * dependent features are present in a particular member |
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61 | * of the family. |
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62 | * |
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63 | * The following architectural feature definitions are defaulted |
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64 | * unless specifically set by the model definition: |
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65 | * |
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66 | * + PPC_DEBUG_MODEL - PPC_DEBUG_MODEL_STANDARD |
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67 | */ |
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68 | |
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69 | /* |
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70 | * Define the debugging assistance models found in the PPC family. |
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71 | * |
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72 | * Standard: single step and branch trace |
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73 | * Single Step Only: single step only |
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74 | * IBM 4xx: debug exception |
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75 | */ |
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76 | |
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77 | #define PPC_DEBUG_MODEL_STANDARD 1 |
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78 | #define PPC_DEBUG_MODEL_SINGLE_STEP_ONLY 2 |
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79 | #define PPC_DEBUG_MODEL_IBM4xx 3 |
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80 | |
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81 | #elif defined(ppc403) || defined(ppc405) |
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82 | |
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83 | #define PPC_DEBUG_MODEL PPC_DEBUG_MODEL_IBM4xx |
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84 | |
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85 | #elif defined(ppc601) |
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86 | |
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87 | #define PPC_DEBUG_MODEL PPC_DEBUG_MODEL_SINGLE_STEP_ONLY |
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88 | |
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89 | #endif |
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90 | |
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91 | /* |
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92 | * Use the default debug scheme defined in the architectural specification |
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93 | * if another model has not been specified. |
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94 | */ |
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95 | |
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96 | #ifndef PPC_DEBUG_MODEL |
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97 | #define PPC_DEBUG_MODEL PPC_DEBUG_MODEL_STANDARD |
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98 | #endif |
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99 | |
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100 | /* |
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101 | * Interrupt/exception MSR bits set as defined on p. 2-20 in "The Programming |
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102 | * Environments" and the manuals for various PPC models. |
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103 | */ |
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104 | |
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105 | #if (PPC_DEBUG_MODEL == PPC_DEBUG_MODEL_STANDARD) |
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106 | #define PPC_MSR_DE 0x000000000 /* bit 22 - debug exception enable */ |
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107 | #define PPC_MSR_BE 0x000000200 /* bit 22 - branch trace enable */ |
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108 | #define PPC_MSR_SE 0x000000400 /* bit 21 - single step trace enable */ |
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109 | #elif (PPC_DEBUG_MODEL == PPC_DEBUG_MODEL_SINGLE_STEP_ONLY) |
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110 | #define PPC_MSR_DE 0x000000000 /* bit 22 - debug exception enable */ |
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111 | #define PPC_MSR_BE 0x000000200 /* bit 22 - branch trace enable */ |
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112 | #define PPC_MSR_SE 0x000000000 /* bit 21 - single step trace enable */ |
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113 | #elif (PPC_DEBUG_MODEL == PPC_DEBUG_MODEL_IBM4xx) |
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114 | #define PPC_MSR_DE 0x000000200 /* bit 22 - debug exception enable */ |
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115 | #define PPC_MSR_BE 0x000000000 /* bit 22 - branch trace enable */ |
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116 | #define PPC_MSR_SE 0x000000000 /* bit 21 - single step trace enable */ |
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117 | #else |
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118 | #error "MSR constants -- unknown PPC_DEBUG_MODEL!!" |
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119 | #endif |
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120 | |
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121 | #ifdef __cplusplus |
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122 | } |
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123 | #endif |
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124 | |
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125 | #endif /* _RTEMS_POWERPC_DEBUGMOD_H */ |
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126 | /* end of include file */ |
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