1 | /* |
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2 | * raw_exception.c - This file contains implementation of C function to |
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3 | * Instantiate 60x ppc primary exception entries. |
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4 | * More detailed information can be found on motorola |
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5 | * site and more precisely in the following book : |
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6 | * |
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7 | * MPC750 |
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8 | * Risc Microporcessor User's Manual |
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9 | * Motorola REF : MPC750UM/AD 8/97 |
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10 | * |
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11 | * Copyright (C) 1999 Eric Valette (valette@crf.canon.fr) |
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12 | * Canon Centre Recherche France. |
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13 | * |
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14 | * Enhanced by Jay Kulpinski <jskulpin@eng01.gdds.com> |
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15 | * to support 603, 603e, 604, 604e exceptions |
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16 | * |
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17 | * moved to "libcpu/powerpc/new-exceptions and consolidated |
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18 | * by Thomas Doerfler <Thomas.Doerfler@embedded-brains.de> |
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19 | * to be common for all PPCs with new excpetions |
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20 | * |
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21 | * The license and distribution terms for this file may be |
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22 | * found in found in the file LICENSE in this distribution or at |
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23 | * http://www.rtems.com/license/LICENSE. |
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24 | * |
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25 | * $Id$ |
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26 | */ |
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27 | #include <rtems/system.h> |
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28 | #include <rtems/score/powerpc.h> |
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29 | #include <rtems/bspIo.h> |
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30 | #include <libcpu/raw_exception.h> |
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31 | #include <libcpu/cpuIdent.h> |
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32 | |
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33 | #include <string.h> |
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34 | |
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35 | static rtems_raw_except_connect_data* raw_except_table; |
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36 | static rtems_raw_except_connect_data default_raw_except_entry; |
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37 | static rtems_raw_except_global_settings* local_settings; |
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38 | |
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39 | void * codemove(void *, const void *, unsigned int, unsigned long); |
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40 | |
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41 | |
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42 | static void* ppc_get_vector_addr(rtems_vector vector) |
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43 | { |
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44 | unsigned vaddr; |
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45 | extern rtems_cpu_table Cpu_table; |
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46 | |
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47 | switch(vector) { |
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48 | /* |
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49 | * some vectors are located at odd addresses and only available |
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50 | * on some CPU derivates. this construct will handle them |
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51 | * if available |
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52 | */ |
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53 | #if defined(PPC_HAS_60X_VECTORS) |
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54 | /* Special case; altivec unavailable doesn't fit :-( */ |
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55 | case ASM_VEC_VECTOR: |
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56 | vaddr = ASM_VEC_VECTOR_OFFSET; |
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57 | break; |
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58 | #endif |
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59 | #if defined(ASM_PIT_VECTOR) |
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60 | case ASM_PIT_VECTOR: |
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61 | vaddr = ASM_PIT_VECTOR_OFFSET; |
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62 | break; |
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63 | #endif |
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64 | #if defined(ASM_FIT_VECTOR) |
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65 | case ASM_FIT_VECTOR: |
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66 | vaddr = ASM_FIT_VECTOR_OFFSET; |
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67 | break; |
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68 | #endif |
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69 | #if defined(ASM_WDOG_VECTOR) |
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70 | case ASM_WDOG_VECTOR: |
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71 | vaddr = ASM_WDOG_VECTOR_OFFSET; |
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72 | break; |
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73 | #endif |
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74 | default: |
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75 | vaddr = ((unsigned)vector) << 8; |
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76 | break; |
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77 | } |
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78 | if ( Cpu_table.exceptions_in_RAM ) |
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79 | return ((void*) vaddr); |
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80 | |
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81 | return ((void*) (vaddr + 0xfff00000)); |
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82 | } |
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83 | |
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84 | |
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85 | #if ( defined(mpc860) || defined(mpc821) ) |
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86 | |
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87 | int mpc860_vector_is_valid(rtems_vector vector) |
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88 | { |
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89 | switch(vector) { |
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90 | case ASM_RESET_VECTOR: /* fall through */ |
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91 | case ASM_MACH_VECTOR: |
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92 | case ASM_PROT_VECTOR: |
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93 | case ASM_ISI_VECTOR: |
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94 | case ASM_EXT_VECTOR: |
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95 | case ASM_ALIGN_VECTOR: |
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96 | case ASM_PROG_VECTOR: |
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97 | case ASM_FLOAT_VECTOR: |
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98 | case ASM_DEC_VECTOR: |
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99 | |
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100 | case ASM_SYS_VECTOR: |
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101 | case ASM_TRACE_VECTOR: |
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102 | case ASM_FLOATASSIST_VECTOR: |
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103 | |
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104 | case ASM_SOFTEMUL_VECTOR: |
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105 | case ASM_ITLBMISS_VECTOR: |
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106 | case ASM_DTLBMISS_VECTOR: |
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107 | case ASM_ITLBERROR_VECTOR: |
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108 | case ASM_DTLBERROR_VECTOR: |
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109 | |
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110 | case ASM_DBREAK_VECTOR: |
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111 | case ASM_IBREAK_VECTOR: |
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112 | case ASM_PERIFBREAK_VECTOR: |
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113 | case ASM_DEVPORT_VECTOR: |
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114 | return 1; |
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115 | default: return 0; |
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116 | } |
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117 | } |
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118 | #endif |
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119 | |
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120 | #if (defined(mpc555) || defined(mpc505)) |
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121 | |
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122 | int ppc_vector_is_valid(rtems_vector vector) |
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123 | { |
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124 | switch (current_ppc_cpu) { |
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125 | case PPC_5XX: |
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126 | switch(vector) { |
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127 | case ASM_RESET_VECTOR: |
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128 | case ASM_MACH_VECTOR: |
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129 | |
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130 | case ASM_EXT_VECTOR: |
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131 | case ASM_ALIGN_VECTOR: |
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132 | case ASM_PROG_VECTOR: |
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133 | case ASM_FLOAT_VECTOR: |
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134 | case ASM_DEC_VECTOR: |
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135 | |
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136 | case ASM_SYS_VECTOR: |
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137 | case ASM_TRACE_VECTOR: |
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138 | case ASM_FLOATASSIST_VECTOR: |
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139 | |
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140 | case ASM_SOFTEMUL_VECTOR: |
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141 | |
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142 | case ASM_IPROT_VECTOR: |
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143 | case ASM_DPROT_VECTOR: |
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144 | |
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145 | case ASM_DBREAK_VECTOR: |
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146 | case ASM_IBREAK_VECTOR: |
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147 | case ASM_MEBREAK_VECTOR: |
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148 | case ASM_NMEBREAK_VECTOR: |
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149 | return 1; |
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150 | default: |
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151 | return 0; |
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152 | } |
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153 | default: |
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154 | printk("Please complete libcpu/powerpc/shared/new-exceptions/raw_exception.c\n"); |
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155 | printk("current_ppc_cpu = %x\n", current_ppc_cpu); |
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156 | return 0; |
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157 | } |
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158 | } |
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159 | #endif |
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160 | |
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161 | #if defined(ppc405) |
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162 | int ppc405_vector_is_valid(rtems_vector vector) |
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163 | |
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164 | { |
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165 | switch(vector) { |
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166 | case ASM_RESET_VECTOR: /* fall through */ |
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167 | case ASM_MACH_VECTOR: |
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168 | case ASM_PROT_VECTOR: |
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169 | case ASM_ISI_VECTOR: |
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170 | case ASM_EXT_VECTOR: |
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171 | case ASM_ALIGN_VECTOR: |
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172 | case ASM_PROG_VECTOR: |
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173 | case ASM_SYS_VECTOR: |
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174 | case ASM_PIT_VECTOR: |
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175 | case ASM_ITLBMISS_VECTOR: |
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176 | case ASM_DTLBMISS_VECTOR: |
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177 | return 1; |
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178 | default: return 0; |
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179 | } |
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180 | } |
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181 | #endif /* defined(ppc405) */ |
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182 | |
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183 | #if defined(PPC_HAS_60X_VECTORS) /* 60x style cpu types */ |
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184 | |
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185 | int altivec_vector_is_valid(rtems_vector vector) |
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186 | { |
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187 | switch(vector) { |
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188 | case ASM_VEC_VECTOR: |
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189 | case ASM_VEC_ASSIST_VECTOR: |
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190 | return 1; |
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191 | default: |
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192 | break; |
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193 | } |
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194 | return 0; |
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195 | } |
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196 | |
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197 | int mpc750_vector_is_valid(rtems_vector vector) |
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198 | |
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199 | { |
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200 | switch(vector) { |
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201 | case ASM_RESET_VECTOR: /* fall through */ |
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202 | case ASM_MACH_VECTOR: |
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203 | case ASM_PROT_VECTOR: |
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204 | case ASM_ISI_VECTOR: |
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205 | case ASM_EXT_VECTOR: |
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206 | case ASM_ALIGN_VECTOR: |
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207 | case ASM_PROG_VECTOR: |
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208 | case ASM_FLOAT_VECTOR: |
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209 | case ASM_DEC_VECTOR: |
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210 | case ASM_SYS_VECTOR: |
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211 | case ASM_TRACE_VECTOR: |
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212 | case ASM_ADDR_VECTOR: |
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213 | case ASM_SYSMGMT_VECTOR: |
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214 | case ASM_ITM_VECTOR: |
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215 | return 1; |
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216 | default: return 0; |
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217 | } |
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218 | } |
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219 | |
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220 | int PSIM_vector_is_valid(rtems_vector vector) |
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221 | { |
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222 | switch(vector) { |
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223 | case ASM_RESET_VECTOR: /* fall through */ |
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224 | case ASM_MACH_VECTOR: |
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225 | case ASM_PROT_VECTOR: |
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226 | case ASM_ISI_VECTOR: |
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227 | case ASM_EXT_VECTOR: |
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228 | case ASM_ALIGN_VECTOR: |
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229 | case ASM_PROG_VECTOR: |
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230 | case ASM_FLOAT_VECTOR: |
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231 | case ASM_DEC_VECTOR: |
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232 | return 1; |
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233 | case ASM_SYS_VECTOR: |
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234 | return 0; |
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235 | case ASM_TRACE_VECTOR: |
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236 | return 1; |
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237 | case ASM_PERFMON_VECTOR: |
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238 | return 0; |
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239 | case ASM_IMISS_VECTOR: /* fall through */ |
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240 | case ASM_DLMISS_VECTOR: |
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241 | case ASM_DSMISS_VECTOR: |
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242 | case ASM_ADDR_VECTOR: |
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243 | case ASM_SYSMGMT_VECTOR: |
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244 | return 1; |
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245 | case ASM_ITM_VECTOR: |
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246 | return 0; |
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247 | } |
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248 | return 0; |
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249 | } |
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250 | |
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251 | int mpc603_vector_is_valid(rtems_vector vector) |
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252 | { |
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253 | switch(vector) { |
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254 | case ASM_RESET_VECTOR: /* fall through */ |
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255 | case ASM_MACH_VECTOR: |
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256 | case ASM_PROT_VECTOR: |
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257 | case ASM_ISI_VECTOR: |
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258 | case ASM_EXT_VECTOR: |
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259 | case ASM_ALIGN_VECTOR: |
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260 | case ASM_PROG_VECTOR: |
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261 | case ASM_FLOAT_VECTOR: |
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262 | case ASM_DEC_VECTOR: |
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263 | case ASM_SYS_VECTOR: |
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264 | case ASM_TRACE_VECTOR: |
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265 | return 1; |
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266 | case ASM_PERFMON_VECTOR: |
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267 | return 0; |
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268 | case ASM_IMISS_VECTOR: /* fall through */ |
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269 | case ASM_DLMISS_VECTOR: |
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270 | case ASM_DSMISS_VECTOR: |
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271 | case ASM_ADDR_VECTOR: |
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272 | case ASM_SYSMGMT_VECTOR: |
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273 | return 1; |
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274 | case ASM_ITM_VECTOR: |
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275 | return 0; |
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276 | } |
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277 | return 0; |
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278 | } |
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279 | |
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280 | int mpc604_vector_is_valid(rtems_vector vector) |
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281 | { |
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282 | switch(vector) { |
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283 | case ASM_RESET_VECTOR: /* fall through */ |
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284 | case ASM_MACH_VECTOR: |
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285 | case ASM_PROT_VECTOR: |
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286 | case ASM_ISI_VECTOR: |
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287 | case ASM_EXT_VECTOR: |
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288 | case ASM_ALIGN_VECTOR: |
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289 | case ASM_PROG_VECTOR: |
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290 | case ASM_FLOAT_VECTOR: |
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291 | case ASM_DEC_VECTOR: |
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292 | case ASM_SYS_VECTOR: |
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293 | case ASM_TRACE_VECTOR: |
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294 | case ASM_PERFMON_VECTOR: |
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295 | return 1; |
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296 | case ASM_IMISS_VECTOR: /* fall through */ |
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297 | case ASM_DLMISS_VECTOR: |
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298 | case ASM_DSMISS_VECTOR: |
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299 | return 0; |
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300 | case ASM_ADDR_VECTOR: /* fall through */ |
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301 | case ASM_SYSMGMT_VECTOR: |
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302 | return 1; |
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303 | case ASM_ITM_VECTOR: |
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304 | return 0; |
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305 | } |
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306 | return 0; |
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307 | } |
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308 | |
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309 | #endif /* 60x style cpu types */ |
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310 | |
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311 | int ppc_vector_is_valid(rtems_vector vector) |
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312 | { |
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313 | switch (current_ppc_cpu) { |
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314 | #if defined(PPC_HAS_60X_VECTORS) |
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315 | case PPC_7400: |
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316 | if ( altivec_vector_is_valid(vector) ) |
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317 | return 1; |
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318 | /* else fall thru */ |
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319 | case PPC_750: |
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320 | if (!mpc750_vector_is_valid(vector)) { |
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321 | return 0; |
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322 | } |
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323 | break; |
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324 | case PPC_7455: /* Kate Feng */ |
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325 | case PPC_7457: |
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326 | if ( altivec_vector_is_valid(vector) ) |
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327 | return 1; |
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328 | /* else fall thru */ |
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329 | case PPC_604: |
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330 | case PPC_604e: |
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331 | case PPC_604r: |
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332 | if (!mpc604_vector_is_valid(vector)) { |
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333 | return 0; |
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334 | } |
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335 | break; |
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336 | case PPC_603: |
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337 | case PPC_603e: |
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338 | case PPC_603le: |
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339 | case PPC_603ev: |
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340 | case PPC_8260: |
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341 | /* case PPC_8240: -- same value as 8260 */ |
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342 | case PPC_8245: |
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343 | if (!mpc603_vector_is_valid(vector)) { |
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344 | return 0; |
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345 | } |
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346 | break; |
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347 | case PPC_PSIM: |
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348 | if (!PSIM_vector_is_valid(vector)) { |
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349 | return 0; |
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350 | } |
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351 | break; |
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352 | #endif |
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353 | #if ( defined(mpc860) || defined(mpc821) ) |
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354 | case PPC_860: |
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355 | if (!mpc860_vector_is_valid(vector)) { |
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356 | return 0; |
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357 | } |
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358 | break; |
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359 | #endif |
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360 | #if defined(ppc405) |
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361 | case PPC_405: |
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362 | if (!ppc405_vector_is_valid(vector)) { |
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363 | return 0; |
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364 | } |
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365 | break; |
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366 | #endif |
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367 | default: |
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368 | printk("Please complete " |
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369 | "libcpu/powerpc/new-exceptions/raw_exception.c\n" |
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370 | "current_ppc_cpu = %x\n", current_ppc_cpu); |
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371 | return 0; |
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372 | } |
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373 | return 1; |
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374 | } |
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375 | |
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376 | int ppc_set_exception (const rtems_raw_except_connect_data* except) |
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377 | { |
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378 | unsigned int level; |
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379 | |
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380 | if (!ppc_vector_is_valid(except->exceptIndex)) { |
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381 | printk("ppc_set_exception: vector %d is not valid\n", |
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382 | except->exceptIndex); |
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383 | return 0; |
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384 | } |
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385 | /* |
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386 | * Check if default handler is actually connected. If not issue an error. |
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387 | * You must first get the current handler via mpc60x_get_current_exception |
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388 | * and then disconnect it using mpc60x_delete_exception. |
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389 | * RATIONALE : to always have the same transition by forcing the user |
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390 | * to get the previous handler before accepting to disconnect. |
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391 | */ |
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392 | |
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393 | if (memcmp(ppc_get_vector_addr(except->exceptIndex), |
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394 | (void*)default_raw_except_entry.hdl.raw_hdl, |
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395 | default_raw_except_entry.hdl.raw_hdl_size)) { |
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396 | printk("ppc_set_exception: raw vector not installed\n"); |
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397 | return 0; |
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398 | } |
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399 | |
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400 | _CPU_ISR_Disable(level); |
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401 | |
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402 | raw_except_table [except->exceptIndex] = *except; |
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403 | codemove((void*)ppc_get_vector_addr(except->exceptIndex), |
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404 | except->hdl.raw_hdl, |
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405 | except->hdl.raw_hdl_size, |
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406 | PPC_CACHE_ALIGNMENT); |
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407 | except->on(except); |
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408 | |
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409 | _CPU_ISR_Enable(level); |
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410 | return 1; |
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411 | } |
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412 | |
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413 | int ppc_get_current_exception (rtems_raw_except_connect_data* except) |
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414 | { |
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415 | if (!ppc_vector_is_valid(except->exceptIndex)){ |
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416 | return 0; |
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417 | } |
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418 | |
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419 | *except = raw_except_table [except->exceptIndex]; |
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420 | |
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421 | return 1; |
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422 | } |
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423 | |
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424 | int ppc_delete_exception (const rtems_raw_except_connect_data* except) |
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425 | { |
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426 | unsigned int level; |
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427 | |
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428 | if (!ppc_vector_is_valid(except->exceptIndex)){ |
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429 | return 0; |
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430 | } |
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431 | /* |
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432 | * Check if handler passed is actually connected. If not issue an error. |
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433 | * You must first get the current handler via ppc_get_current_exception |
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434 | * and then disconnect it using ppc_delete_exception. |
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435 | * RATIONALE : to always have the same transition by forcing the user |
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436 | * to get the previous handler before accepting to disconnect. |
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437 | */ |
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438 | if (memcmp(ppc_get_vector_addr(except->exceptIndex), |
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439 | (void*)except->hdl.raw_hdl, |
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440 | except->hdl.raw_hdl_size)) { |
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441 | return 0; |
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442 | } |
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443 | _CPU_ISR_Disable(level); |
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444 | |
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445 | except->off(except); |
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446 | codemove((void*)ppc_get_vector_addr(except->exceptIndex), |
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447 | default_raw_except_entry.hdl.raw_hdl, |
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448 | default_raw_except_entry.hdl.raw_hdl_size, |
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449 | PPC_CACHE_ALIGNMENT); |
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450 | |
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451 | |
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452 | raw_except_table[except->exceptIndex] = default_raw_except_entry; |
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453 | raw_except_table[except->exceptIndex].exceptIndex = except->exceptIndex; |
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454 | |
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455 | _CPU_ISR_Enable(level); |
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456 | |
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457 | return 1; |
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458 | } |
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459 | |
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460 | /* |
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461 | * Exception global init. |
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462 | */ |
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463 | int ppc_init_exceptions (rtems_raw_except_global_settings* config) |
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464 | { |
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465 | unsigned i; |
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466 | unsigned int level; |
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467 | |
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468 | /* |
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469 | * store various accelerators |
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470 | */ |
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471 | raw_except_table = config->rawExceptHdlTbl; |
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472 | local_settings = config; |
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473 | default_raw_except_entry = config->defaultRawEntry; |
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474 | |
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475 | _CPU_ISR_Disable(level); |
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476 | |
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477 | for (i=0; i <= LAST_VALID_EXC; i++) { |
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478 | if (!ppc_vector_is_valid(i)){ |
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479 | continue; |
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480 | } |
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481 | codemove((void*)ppc_get_vector_addr(i), |
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482 | raw_except_table[i].hdl.raw_hdl, |
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483 | raw_except_table[i].hdl.raw_hdl_size, |
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484 | PPC_CACHE_ALIGNMENT); |
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485 | if (raw_except_table[i].hdl.raw_hdl != default_raw_except_entry.hdl.raw_hdl) { |
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486 | raw_except_table[i].on(&raw_except_table[i]); |
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487 | } |
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488 | else { |
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489 | raw_except_table[i].off(&raw_except_table[i]); |
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490 | } |
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491 | } |
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492 | _CPU_ISR_Enable(level); |
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493 | |
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494 | return 1; |
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495 | } |
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496 | |
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497 | int ppc_get_exception_config (rtems_raw_except_global_settings** config) |
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498 | { |
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499 | *config = local_settings; |
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500 | return 1; |
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501 | } |
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