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529 | jermar | 1 | # |
2 | # Copyright (C) 2005 Jakub Jermar |
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3 | # All rights reserved. |
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4 | # |
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5 | # Redistribution and use in source and binary forms, with or without |
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6 | # modification, are permitted provided that the following conditions |
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7 | # are met: |
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8 | # |
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9 | # - Redistributions of source code must retain the above copyright |
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10 | # notice, this list of conditions and the following disclaimer. |
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11 | # - Redistributions in binary form must reproduce the above copyright |
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12 | # notice, this list of conditions and the following disclaimer in the |
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13 | # documentation and/or other materials provided with the distribution. |
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14 | # - The name of the author may not be used to endorse or promote products |
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15 | # derived from this software without specific prior written permission. |
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16 | # |
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17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | # |
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28 | |||
29 | /** |
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1865 | jermar | 30 | * @file |
31 | * @brief This file contains kernel trap table. |
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529 | jermar | 32 | */ |
666 | jermar | 33 | |
34 | .register %g2, #scratch |
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35 | .register %g3, #scratch |
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36 | |||
529 | jermar | 37 | .text |
38 | |||
630 | jermar | 39 | #include <arch/trap/trap_table.h> |
40 | #include <arch/trap/regwin.h> |
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663 | jermar | 41 | #include <arch/trap/interrupt.h> |
667 | jermar | 42 | #include <arch/trap/exception.h> |
1862 | jermar | 43 | #include <arch/trap/syscall.h> |
863 | jermar | 44 | #include <arch/trap/mmu.h> |
1860 | jermar | 45 | #include <arch/mm/mmu.h> |
1857 | jermar | 46 | #include <arch/mm/page.h> |
667 | jermar | 47 | #include <arch/stack.h> |
1851 | jermar | 48 | #include <arch/regdef.h> |
529 | jermar | 49 | |
50 | #define TABLE_SIZE TRAP_TABLE_SIZE |
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51 | #define ENTRY_SIZE TRAP_TABLE_ENTRY_SIZE |
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52 | |||
53 | /* |
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634 | jermar | 54 | * Kernel trap table. |
529 | jermar | 55 | */ |
56 | .align TABLE_SIZE |
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57 | .global trap_table |
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58 | trap_table: |
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59 | |||
667 | jermar | 60 | /* TT = 0x08, TL = 0, instruction_access_exception */ |
61 | .org trap_table + TT_INSTRUCTION_ACCESS_EXCEPTION*ENTRY_SIZE |
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62 | .global instruction_access_exception |
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63 | instruction_access_exception: |
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1861 | jermar | 64 | PREEMPTIBLE_HANDLER do_instruction_access_exc |
667 | jermar | 65 | |
883 | jermar | 66 | /* TT = 0x10, TL = 0, illegal_instruction */ |
67 | .org trap_table + TT_ILLEGAL_INSTRUCTION*ENTRY_SIZE |
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68 | .global illegal_instruction |
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69 | illegal_instruction: |
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1861 | jermar | 70 | PREEMPTIBLE_HANDLER do_illegal_instruction |
883 | jermar | 71 | |
663 | jermar | 72 | /* TT = 0x24, TL = 0, clean_window handler */ |
634 | jermar | 73 | .org trap_table + TT_CLEAN_WINDOW*ENTRY_SIZE |
630 | jermar | 74 | .global clean_window_handler |
75 | clean_window_handler: |
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76 | CLEAN_WINDOW_HANDLER |
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529 | jermar | 77 | |
897 | jermar | 78 | /* TT = 0x32, TL = 0, data_access_error */ |
79 | .org trap_table + TT_DATA_ACCESS_ERROR*ENTRY_SIZE |
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80 | .global data_access_error |
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81 | data_access_error: |
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1861 | jermar | 82 | PREEMPTIBLE_HANDLER do_data_access_error |
897 | jermar | 83 | |
667 | jermar | 84 | /* TT = 0x34, TL = 0, mem_address_not_aligned */ |
85 | .org trap_table + TT_MEM_ADDRESS_NOT_ALIGNED*ENTRY_SIZE |
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86 | .global mem_address_not_aligned |
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87 | mem_address_not_aligned: |
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1865 | jermar | 88 | MEM_ADDRESS_NOT_ALIGNED_HANDLER |
667 | jermar | 89 | |
664 | jermar | 90 | /* TT = 0x41, TL = 0, interrupt_level_1 handler */ |
91 | .org trap_table + TT_INTERRUPT_LEVEL_1*ENTRY_SIZE |
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92 | .global interrupt_level_1_handler |
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93 | interrupt_level_1_handler: |
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94 | INTERRUPT_LEVEL_N_HANDLER 1 |
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95 | |||
96 | /* TT = 0x42, TL = 0, interrupt_level_2 handler */ |
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97 | .org trap_table + TT_INTERRUPT_LEVEL_2*ENTRY_SIZE |
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98 | .global interrupt_level_2_handler |
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99 | interrupt_level_2_handler: |
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100 | INTERRUPT_LEVEL_N_HANDLER 2 |
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101 | |||
102 | /* TT = 0x43, TL = 0, interrupt_level_3 handler */ |
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103 | .org trap_table + TT_INTERRUPT_LEVEL_3*ENTRY_SIZE |
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104 | .global interrupt_level_3_handler |
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105 | interrupt_level_3_handler: |
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106 | INTERRUPT_LEVEL_N_HANDLER 3 |
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107 | |||
108 | /* TT = 0x44, TL = 0, interrupt_level_4 handler */ |
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109 | .org trap_table + TT_INTERRUPT_LEVEL_4*ENTRY_SIZE |
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110 | .global interrupt_level_4_handler |
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111 | interrupt_level_4_handler: |
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112 | INTERRUPT_LEVEL_N_HANDLER 4 |
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113 | |||
114 | /* TT = 0x45, TL = 0, interrupt_level_5 handler */ |
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115 | .org trap_table + TT_INTERRUPT_LEVEL_5*ENTRY_SIZE |
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116 | .global interrupt_level_5_handler |
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117 | interrupt_level_5_handler: |
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118 | INTERRUPT_LEVEL_N_HANDLER 5 |
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119 | |||
120 | /* TT = 0x46, TL = 0, interrupt_level_6 handler */ |
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121 | .org trap_table + TT_INTERRUPT_LEVEL_6*ENTRY_SIZE |
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122 | .global interrupt_level_6_handler |
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123 | interrupt_level_6_handler: |
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124 | INTERRUPT_LEVEL_N_HANDLER 6 |
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125 | |||
126 | /* TT = 0x47, TL = 0, interrupt_level_7 handler */ |
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127 | .org trap_table + TT_INTERRUPT_LEVEL_7*ENTRY_SIZE |
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128 | .global interrupt_level_7_handler |
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129 | interrupt_level_7_handler: |
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130 | INTERRUPT_LEVEL_N_HANDLER 7 |
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131 | |||
132 | /* TT = 0x48, TL = 0, interrupt_level_8 handler */ |
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133 | .org trap_table + TT_INTERRUPT_LEVEL_8*ENTRY_SIZE |
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134 | .global interrupt_level_8_handler |
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135 | interrupt_level_8_handler: |
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136 | INTERRUPT_LEVEL_N_HANDLER 8 |
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137 | |||
138 | /* TT = 0x49, TL = 0, interrupt_level_9 handler */ |
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139 | .org trap_table + TT_INTERRUPT_LEVEL_9*ENTRY_SIZE |
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140 | .global interrupt_level_9_handler |
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141 | interrupt_level_9_handler: |
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142 | INTERRUPT_LEVEL_N_HANDLER 9 |
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143 | |||
144 | /* TT = 0x4a, TL = 0, interrupt_level_10 handler */ |
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145 | .org trap_table + TT_INTERRUPT_LEVEL_10*ENTRY_SIZE |
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146 | .global interrupt_level_10_handler |
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147 | interrupt_level_10_handler: |
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148 | INTERRUPT_LEVEL_N_HANDLER 10 |
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149 | |||
150 | /* TT = 0x4b, TL = 0, interrupt_level_11 handler */ |
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151 | .org trap_table + TT_INTERRUPT_LEVEL_11*ENTRY_SIZE |
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152 | .global interrupt_level_11_handler |
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153 | interrupt_level_11_handler: |
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154 | INTERRUPT_LEVEL_N_HANDLER 11 |
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155 | |||
156 | /* TT = 0x4c, TL = 0, interrupt_level_12 handler */ |
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157 | .org trap_table + TT_INTERRUPT_LEVEL_12*ENTRY_SIZE |
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158 | .global interrupt_level_12_handler |
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159 | interrupt_level_12_handler: |
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160 | INTERRUPT_LEVEL_N_HANDLER 12 |
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161 | |||
162 | /* TT = 0x4d, TL = 0, interrupt_level_13 handler */ |
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163 | .org trap_table + TT_INTERRUPT_LEVEL_13*ENTRY_SIZE |
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164 | .global interrupt_level_13_handler |
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165 | interrupt_level_13_handler: |
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166 | INTERRUPT_LEVEL_N_HANDLER 13 |
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167 | |||
168 | /* TT = 0x4e, TL = 0, interrupt_level_14 handler */ |
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169 | .org trap_table + TT_INTERRUPT_LEVEL_14*ENTRY_SIZE |
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170 | .global interrupt_level_14_handler |
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171 | interrupt_level_14_handler: |
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172 | INTERRUPT_LEVEL_N_HANDLER 14 |
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173 | |||
174 | /* TT = 0x4f, TL = 0, interrupt_level_15 handler */ |
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175 | .org trap_table + TT_INTERRUPT_LEVEL_15*ENTRY_SIZE |
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176 | .global interrupt_level_15_handler |
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177 | interrupt_level_15_handler: |
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178 | INTERRUPT_LEVEL_N_HANDLER 15 |
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179 | |||
663 | jermar | 180 | /* TT = 0x60, TL = 0, interrupt_vector_trap handler */ |
181 | .org trap_table + TT_INTERRUPT_VECTOR_TRAP*ENTRY_SIZE |
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182 | .global interrupt_vector_trap_handler |
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183 | interrupt_vector_trap_handler: |
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184 | INTERRUPT_VECTOR_TRAP_HANDLER |
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185 | |||
863 | jermar | 186 | /* TT = 0x64, TL = 0, fast_instruction_access_MMU_miss */ |
187 | .org trap_table + TT_FAST_INSTRUCTION_ACCESS_MMU_MISS*ENTRY_SIZE |
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188 | .global fast_instruction_access_mmu_miss_handler |
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189 | fast_instruction_access_mmu_miss_handler: |
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190 | FAST_INSTRUCTION_ACCESS_MMU_MISS_HANDLER |
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191 | |||
192 | /* TT = 0x68, TL = 0, fast_data_access_MMU_miss */ |
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193 | .org trap_table + TT_FAST_DATA_ACCESS_MMU_MISS*ENTRY_SIZE |
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194 | .global fast_data_access_mmu_miss_handler |
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195 | fast_data_access_mmu_miss_handler: |
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196 | FAST_DATA_ACCESS_MMU_MISS_HANDLER |
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197 | |||
198 | /* TT = 0x6c, TL = 0, fast_data_access_protection */ |
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199 | .org trap_table + TT_FAST_DATA_ACCESS_PROTECTION*ENTRY_SIZE |
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200 | .global fast_data_access_protection_handler |
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201 | fast_data_access_protection_handler: |
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202 | FAST_DATA_ACCESS_PROTECTION_HANDLER |
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203 | |||
663 | jermar | 204 | /* TT = 0x80, TL = 0, spill_0_normal handler */ |
634 | jermar | 205 | .org trap_table + TT_SPILL_0_NORMAL*ENTRY_SIZE |
630 | jermar | 206 | .global spill_0_normal |
207 | spill_0_normal: |
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1852 | jermar | 208 | SPILL_NORMAL_HANDLER_KERNEL |
529 | jermar | 209 | |
1856 | jermar | 210 | /* TT = 0x84, TL = 0, spill_1_normal handler */ |
211 | .org trap_table + TT_SPILL_1_NORMAL*ENTRY_SIZE |
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212 | .global spill_1_normal |
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213 | spill_1_normal: |
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214 | SPILL_NORMAL_HANDLER_USERSPACE |
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215 | |||
216 | /* TT = 0x88, TL = 0, spill_2_normal handler */ |
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217 | .org trap_table + TT_SPILL_2_NORMAL*ENTRY_SIZE |
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218 | .global spill_2_normal |
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219 | spill_2_normal: |
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220 | SPILL_TO_USPACE_WINDOW_BUFFER |
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221 | |||
1864 | jermar | 222 | /* TT = 0xa0, TL = 0, spill_0_other handler */ |
223 | .org trap_table + TT_SPILL_0_OTHER*ENTRY_SIZE |
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224 | .global spill_0_other |
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225 | spill_0_other: |
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226 | SPILL_TO_USPACE_WINDOW_BUFFER |
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227 | |||
663 | jermar | 228 | /* TT = 0xc0, TL = 0, fill_0_normal handler */ |
634 | jermar | 229 | .org trap_table + TT_FILL_0_NORMAL*ENTRY_SIZE |
663 | jermar | 230 | .global fill_0_normal |
630 | jermar | 231 | fill_0_normal: |
1852 | jermar | 232 | FILL_NORMAL_HANDLER_KERNEL |
630 | jermar | 233 | |
1856 | jermar | 234 | /* TT = 0xc4, TL = 0, fill_1_normal handler */ |
235 | .org trap_table + TT_FILL_1_NORMAL*ENTRY_SIZE |
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236 | .global fill_1_normal |
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237 | fill_1_normal: |
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238 | FILL_NORMAL_HANDLER_USERSPACE |
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239 | |||
1862 | jermar | 240 | /* TT = 0x100, TL = 0, trap_instruction_0 */ |
241 | .org trap_table + TT_TRAP_INSTRUCTION(0)*ENTRY_SIZE |
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242 | .global trap_instruction_0 |
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243 | trap_instruction_0: |
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244 | TRAP_INSTRUCTION 0 |
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245 | |||
246 | /* TT = 0x101, TL = 0, trap_instruction_1 */ |
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247 | .org trap_table + TT_TRAP_INSTRUCTION(1)*ENTRY_SIZE |
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248 | .global trap_instruction_1 |
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249 | trap_instruction_1: |
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250 | TRAP_INSTRUCTION 1 |
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251 | |||
252 | /* TT = 0x102, TL = 0, trap_instruction_2 */ |
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253 | .org trap_table + TT_TRAP_INSTRUCTION(2)*ENTRY_SIZE |
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254 | .global trap_instruction_2 |
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255 | trap_instruction_2: |
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256 | TRAP_INSTRUCTION 2 |
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257 | |||
258 | /* TT = 0x103, TL = 0, trap_instruction_3 */ |
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259 | .org trap_table + TT_TRAP_INSTRUCTION(3)*ENTRY_SIZE |
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260 | .global trap_instruction_3 |
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261 | trap_instruction_3: |
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262 | TRAP_INSTRUCTION 3 |
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263 | |||
264 | /* TT = 0x104, TL = 0, trap_instruction_4 */ |
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265 | .org trap_table + TT_TRAP_INSTRUCTION(4)*ENTRY_SIZE |
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266 | .global trap_instruction_4 |
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267 | trap_instruction_4: |
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268 | TRAP_INSTRUCTION 4 |
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269 | |||
270 | /* TT = 0x105, TL = 0, trap_instruction_5 */ |
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271 | .org trap_table + TT_TRAP_INSTRUCTION(5)*ENTRY_SIZE |
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272 | .global trap_instruction_5 |
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273 | trap_instruction_5: |
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274 | TRAP_INSTRUCTION 5 |
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275 | |||
276 | /* TT = 0x106, TL = 0, trap_instruction_6 */ |
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277 | .org trap_table + TT_TRAP_INSTRUCTION(6)*ENTRY_SIZE |
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278 | .global trap_instruction_6 |
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279 | trap_instruction_6: |
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280 | TRAP_INSTRUCTION 6 |
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281 | |||
282 | /* TT = 0x107, TL = 0, trap_instruction_7 */ |
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283 | .org trap_table + TT_TRAP_INSTRUCTION(7)*ENTRY_SIZE |
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284 | .global trap_instruction_7 |
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285 | trap_instruction_7: |
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286 | TRAP_INSTRUCTION 7 |
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287 | |||
288 | /* TT = 0x108, TL = 0, trap_instruction_8 */ |
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289 | .org trap_table + TT_TRAP_INSTRUCTION(8)*ENTRY_SIZE |
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290 | .global trap_instruction_8 |
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291 | trap_instruction_8: |
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292 | TRAP_INSTRUCTION 8 |
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293 | |||
294 | /* TT = 0x109, TL = 0, trap_instruction_9 */ |
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295 | .org trap_table + TT_TRAP_INSTRUCTION(9)*ENTRY_SIZE |
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296 | .global trap_instruction_9 |
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297 | trap_instruction_9: |
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298 | TRAP_INSTRUCTION 9 |
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299 | |||
300 | /* TT = 0x10a, TL = 0, trap_instruction_10 */ |
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301 | .org trap_table + TT_TRAP_INSTRUCTION(10)*ENTRY_SIZE |
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302 | .global trap_instruction_10 |
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303 | trap_instruction_10: |
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304 | TRAP_INSTRUCTION 10 |
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305 | |||
306 | /* TT = 0x10b, TL = 0, trap_instruction_11 */ |
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307 | .org trap_table + TT_TRAP_INSTRUCTION(11)*ENTRY_SIZE |
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308 | .global trap_instruction_11 |
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309 | trap_instruction_11: |
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310 | TRAP_INSTRUCTION 11 |
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311 | |||
312 | /* TT = 0x10c, TL = 0, trap_instruction_12 */ |
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313 | .org trap_table + TT_TRAP_INSTRUCTION(12)*ENTRY_SIZE |
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314 | .global trap_instruction_12 |
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315 | trap_instruction_12: |
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316 | TRAP_INSTRUCTION 12 |
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317 | |||
318 | /* TT = 0x10d, TL = 0, trap_instruction_13 */ |
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319 | .org trap_table + TT_TRAP_INSTRUCTION(13)*ENTRY_SIZE |
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320 | .global trap_instruction_13 |
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321 | trap_instruction_13: |
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322 | TRAP_INSTRUCTION 13 |
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323 | |||
324 | /* TT = 0x10e, TL = 0, trap_instruction_14 */ |
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325 | .org trap_table + TT_TRAP_INSTRUCTION(14)*ENTRY_SIZE |
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326 | .global trap_instruction_14 |
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327 | trap_instruction_14: |
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328 | TRAP_INSTRUCTION 14 |
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329 | |||
330 | /* TT = 0x10f, TL = 0, trap_instruction_15 */ |
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331 | .org trap_table + TT_TRAP_INSTRUCTION(15)*ENTRY_SIZE |
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332 | .global trap_instruction_15 |
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333 | trap_instruction_15: |
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334 | TRAP_INSTRUCTION 15 |
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335 | |||
336 | /* TT = 0x110, TL = 0, trap_instruction_16 */ |
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337 | .org trap_table + TT_TRAP_INSTRUCTION(16)*ENTRY_SIZE |
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338 | .global trap_instruction_16 |
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339 | trap_instruction_16: |
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340 | TRAP_INSTRUCTION 16 |
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341 | |||
342 | /* TT = 0x111, TL = 0, trap_instruction_17 */ |
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343 | .org trap_table + TT_TRAP_INSTRUCTION(17)*ENTRY_SIZE |
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344 | .global trap_instruction_17 |
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345 | trap_instruction_17: |
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346 | TRAP_INSTRUCTION 17 |
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347 | |||
348 | /* TT = 0x112, TL = 0, trap_instruction_18 */ |
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349 | .org trap_table + TT_TRAP_INSTRUCTION(18)*ENTRY_SIZE |
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350 | .global trap_instruction_18 |
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351 | trap_instruction_18: |
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352 | TRAP_INSTRUCTION 18 |
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353 | |||
354 | /* TT = 0x113, TL = 0, trap_instruction_19 */ |
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355 | .org trap_table + TT_TRAP_INSTRUCTION(19)*ENTRY_SIZE |
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356 | .global trap_instruction_19 |
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357 | trap_instruction_19: |
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358 | TRAP_INSTRUCTION 19 |
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359 | |||
360 | /* TT = 0x114, TL = 0, trap_instruction_20 */ |
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361 | .org trap_table + TT_TRAP_INSTRUCTION(20)*ENTRY_SIZE |
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362 | .global trap_instruction_20 |
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363 | trap_instruction_20: |
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364 | TRAP_INSTRUCTION 20 |
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365 | |||
366 | /* TT = 0x115, TL = 0, trap_instruction_21 */ |
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367 | .org trap_table + TT_TRAP_INSTRUCTION(21)*ENTRY_SIZE |
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368 | .global trap_instruction_21 |
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369 | trap_instruction_21: |
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370 | TRAP_INSTRUCTION 21 |
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371 | |||
372 | /* TT = 0x116, TL = 0, trap_instruction_22 */ |
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373 | .org trap_table + TT_TRAP_INSTRUCTION(22)*ENTRY_SIZE |
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374 | .global trap_instruction_22 |
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375 | trap_instruction_22: |
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376 | TRAP_INSTRUCTION 22 |
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377 | |||
378 | /* TT = 0x117, TL = 0, trap_instruction_23 */ |
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379 | .org trap_table + TT_TRAP_INSTRUCTION(23)*ENTRY_SIZE |
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380 | .global trap_instruction_23 |
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381 | trap_instruction_23: |
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382 | TRAP_INSTRUCTION 23 |
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383 | |||
384 | /* TT = 0x118, TL = 0, trap_instruction_24 */ |
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385 | .org trap_table + TT_TRAP_INSTRUCTION(24)*ENTRY_SIZE |
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386 | .global trap_instruction_24 |
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387 | trap_instruction_24: |
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388 | TRAP_INSTRUCTION 24 |
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389 | |||
390 | /* TT = 0x119, TL = 0, trap_instruction_25 */ |
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391 | .org trap_table + TT_TRAP_INSTRUCTION(25)*ENTRY_SIZE |
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392 | .global trap_instruction_25 |
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393 | trap_instruction_25: |
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394 | TRAP_INSTRUCTION 25 |
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395 | |||
396 | /* TT = 0x11a, TL = 0, trap_instruction_26 */ |
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397 | .org trap_table + TT_TRAP_INSTRUCTION(26)*ENTRY_SIZE |
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398 | .global trap_instruction_26 |
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399 | trap_instruction_26: |
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400 | TRAP_INSTRUCTION 26 |
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401 | |||
402 | /* TT = 0x11b, TL = 0, trap_instruction_27 */ |
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403 | .org trap_table + TT_TRAP_INSTRUCTION(27)*ENTRY_SIZE |
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404 | .global trap_instruction_27 |
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405 | trap_instruction_27: |
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406 | TRAP_INSTRUCTION 27 |
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407 | |||
408 | /* TT = 0x11c, TL = 0, trap_instruction_28 */ |
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409 | .org trap_table + TT_TRAP_INSTRUCTION(28)*ENTRY_SIZE |
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410 | .global trap_instruction_28 |
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411 | trap_instruction_28: |
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412 | TRAP_INSTRUCTION 28 |
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413 | |||
414 | /* TT = 0x11d, TL = 0, trap_instruction_29 */ |
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415 | .org trap_table + TT_TRAP_INSTRUCTION(29)*ENTRY_SIZE |
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416 | .global trap_instruction_29 |
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417 | trap_instruction_29: |
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418 | TRAP_INSTRUCTION 29 |
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419 | |||
420 | /* TT = 0x11e, TL = 0, trap_instruction_30 */ |
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421 | .org trap_table + TT_TRAP_INSTRUCTION(30)*ENTRY_SIZE |
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422 | .global trap_instruction_30 |
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423 | trap_instruction_30: |
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424 | TRAP_INSTRUCTION 30 |
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425 | |||
426 | /* TT = 0x11f, TL = 0, trap_instruction_31 */ |
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427 | .org trap_table + TT_TRAP_INSTRUCTION(31)*ENTRY_SIZE |
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428 | .global trap_instruction_31 |
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429 | trap_instruction_31: |
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430 | TRAP_INSTRUCTION 31 |
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431 | |||
529 | jermar | 432 | /* |
663 | jermar | 433 | * Handlers for TL>0. |
529 | jermar | 434 | */ |
435 | |||
667 | jermar | 436 | /* TT = 0x08, TL > 0, instruction_access_exception */ |
437 | .org trap_table + (TT_INSTRUCTION_ACCESS_EXCEPTION+512)*ENTRY_SIZE |
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438 | .global instruction_access_exception_high |
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439 | instruction_access_exception_high: |
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1861 | jermar | 440 | PREEMPTIBLE_HANDLER do_instruction_access_exc |
667 | jermar | 441 | |
883 | jermar | 442 | /* TT = 0x10, TL > 0, illegal_instruction */ |
443 | .org trap_table + (TT_ILLEGAL_INSTRUCTION+512)*ENTRY_SIZE |
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444 | .global illegal_instruction_high |
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445 | illegal_instruction_high: |
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1861 | jermar | 446 | PREEMPTIBLE_HANDLER do_illegal_instruction |
883 | jermar | 447 | |
663 | jermar | 448 | /* TT = 0x24, TL > 0, clean_window handler */ |
449 | .org trap_table + (TT_CLEAN_WINDOW+512)*ENTRY_SIZE |
||
450 | .global clean_window_handler_high |
||
451 | clean_window_handler_high: |
||
452 | CLEAN_WINDOW_HANDLER |
||
529 | jermar | 453 | |
897 | jermar | 454 | /* TT = 0x32, TL > 0, data_access_error */ |
455 | .org trap_table + (TT_DATA_ACCESS_ERROR+512)*ENTRY_SIZE |
||
456 | .global data_access_error_high |
||
457 | data_access_error_high: |
||
1861 | jermar | 458 | PREEMPTIBLE_HANDLER do_data_access_error |
897 | jermar | 459 | |
667 | jermar | 460 | /* TT = 0x34, TL > 0, mem_address_not_aligned */ |
461 | .org trap_table + (TT_MEM_ADDRESS_NOT_ALIGNED+512)*ENTRY_SIZE |
||
462 | .global mem_address_not_aligned_high |
||
463 | mem_address_not_aligned_high: |
||
1865 | jermar | 464 | MEM_ADDRESS_NOT_ALIGNED_HANDLER |
529 | jermar | 465 | |
863 | jermar | 466 | /* TT = 0x64, TL > 0, fast_instruction_access_MMU_miss */ |
467 | .org trap_table + (TT_FAST_INSTRUCTION_ACCESS_MMU_MISS+512)*ENTRY_SIZE |
||
468 | .global fast_instruction_access_mmu_miss_handler_high |
||
469 | fast_instruction_access_mmu_miss_handler_high: |
||
470 | FAST_INSTRUCTION_ACCESS_MMU_MISS_HANDLER |
||
471 | |||
472 | /* TT = 0x68, TL > 0, fast_data_access_MMU_miss */ |
||
473 | .org trap_table + (TT_FAST_DATA_ACCESS_MMU_MISS+512)*ENTRY_SIZE |
||
474 | .global fast_data_access_mmu_miss_handler_high |
||
475 | fast_data_access_mmu_miss_handler_high: |
||
476 | FAST_DATA_ACCESS_MMU_MISS_HANDLER |
||
477 | |||
478 | /* TT = 0x6c, TL > 0, fast_data_access_protection */ |
||
479 | .org trap_table + (TT_FAST_DATA_ACCESS_PROTECTION+512)*ENTRY_SIZE |
||
480 | .global fast_data_access_protection_handler_high |
||
481 | fast_data_access_protection_handler_high: |
||
482 | FAST_DATA_ACCESS_PROTECTION_HANDLER |
||
483 | |||
663 | jermar | 484 | /* TT = 0x80, TL > 0, spill_0_normal handler */ |
485 | .org trap_table + (TT_SPILL_0_NORMAL+512)*ENTRY_SIZE |
||
486 | .global spill_0_normal_high |
||
487 | spill_0_normal_high: |
||
1852 | jermar | 488 | SPILL_NORMAL_HANDLER_KERNEL |
529 | jermar | 489 | |
1856 | jermar | 490 | /* TT = 0x88, TL > 0, spill_2_normal handler */ |
491 | .org trap_table + (TT_SPILL_2_NORMAL+512)*ENTRY_SIZE |
||
492 | .global spill_2_normal_high |
||
493 | spill_2_normal_high: |
||
494 | SPILL_TO_USPACE_WINDOW_BUFFER |
||
495 | |||
496 | /* TT = 0xa0, TL > 0, spill_0_other handler */ |
||
497 | .org trap_table + (TT_SPILL_0_OTHER+512)*ENTRY_SIZE |
||
498 | .global spill_0_other_high |
||
499 | spill_0_other_high: |
||
500 | SPILL_TO_USPACE_WINDOW_BUFFER |
||
501 | |||
663 | jermar | 502 | /* TT = 0xc0, TL > 0, fill_0_normal handler */ |
503 | .org trap_table + (TT_FILL_0_NORMAL+512)*ENTRY_SIZE |
||
504 | .global fill_0_normal_high |
||
505 | fill_0_normal_high: |
||
1852 | jermar | 506 | FILL_NORMAL_HANDLER_KERNEL |
634 | jermar | 507 | |
1862 | jermar | 508 | #define NOT(x) ((x) == 0) |
663 | jermar | 509 | |
1851 | jermar | 510 | /* Preemptible trap handler for TL=1. |
666 | jermar | 511 | * |
1851 | jermar | 512 | * This trap handler makes arrangements to make calling of scheduler() from |
1852 | jermar | 513 | * within a trap context possible. It is called from several other trap |
514 | * handlers. |
||
667 | jermar | 515 | * |
1852 | jermar | 516 | * This function can be entered either with interrupt globals or alternate globals. |
517 | * Memory management trap handlers are obliged to switch to one of those global sets |
||
518 | * prior to calling this function. Register window management functions are not |
||
519 | * allowed to modify the alternate global registers. |
||
667 | jermar | 520 | * |
666 | jermar | 521 | * Input registers: |
1852 | jermar | 522 | * %g1 Address of function to call. |
1863 | jermar | 523 | * %g2 First argument for the function. |
1852 | jermar | 524 | * %g6 Pre-set as kernel stack base if trap from userspace. |
1856 | jermar | 525 | * %g7 Pre-set as address of the userspace window buffer. |
666 | jermar | 526 | */ |
1862 | jermar | 527 | .macro PREEMPTIBLE_HANDLER_TEMPLATE is_syscall |
1865 | jermar | 528 | /* |
529 | * ASSERT(%tl == 1) |
||
530 | */ |
||
531 | rdpr %tl, %g3 |
||
532 | cmp %g3, 1 |
||
533 | be 1f |
||
534 | nop |
||
535 | 0: ba 0b ! this for debugging, if we ever get here |
||
536 | nop ! it will be easy to find |
||
537 | |||
538 | 1: |
||
1862 | jermar | 539 | .if NOT(\is_syscall) |
1852 | jermar | 540 | rdpr %tstate, %g3 |
541 | andcc %g3, TSTATE_PRIV_BIT, %g0 ! if this trap came from the privileged mode... |
||
542 | bnz 0f ! ...skip setting of kernel stack and primary context |
||
543 | nop |
||
1862 | jermar | 544 | .endif |
667 | jermar | 545 | /* |
1857 | jermar | 546 | * Normal window spills will go to the userspace window buffer. |
547 | */ |
||
548 | wrpr %g0, WSTATE_OTHER(0) | WSTATE_NORMAL(2), %wstate |
||
549 | |||
1865 | jermar | 550 | wrpr %g0, NWINDOW - 1, %cleanwin ! prevent unnecessary clean_window exceptions |
551 | |||
1857 | jermar | 552 | /* |
1852 | jermar | 553 | * Switch to kernel stack. The old stack is |
554 | * automatically saved in the old window's %sp |
||
555 | * and the new window's %fp. |
||
667 | jermar | 556 | */ |
1852 | jermar | 557 | save %g6, -PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE, %sp |
558 | |||
1862 | jermar | 559 | .if \is_syscall |
1852 | jermar | 560 | /* |
1862 | jermar | 561 | * Copy arguments for the syscall to the new window. |
562 | */ |
||
563 | mov %i0, %o2 |
||
564 | mov %i1, %o3 |
||
565 | mov %i2, %o4 |
||
566 | mov %i3, %o5 |
||
567 | .endif |
||
568 | |||
569 | /* |
||
1864 | jermar | 570 | * Mark the CANRESTORE windows as OTHER windows. |
1852 | jermar | 571 | */ |
1864 | jermar | 572 | rdpr %canrestore, %l0 |
1852 | jermar | 573 | wrpr %l0, %otherwin |
1864 | jermar | 574 | wrpr %g0, %canrestore |
1852 | jermar | 575 | |
576 | /* |
||
577 | * Switch to primary context 0. |
||
578 | */ |
||
579 | mov VA_PRIMARY_CONTEXT_REG, %l0 |
||
1860 | jermar | 580 | stxa %g0, [%l0] ASI_DMMU |
581 | rd %pc, %l0 |
||
582 | flush %l0 |
||
1852 | jermar | 583 | |
1862 | jermar | 584 | .if NOT(\is_syscall) |
1852 | jermar | 585 | ba 1f |
586 | nop |
||
587 | |||
588 | 0: |
||
589 | save %sp, -PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE, %sp |
||
590 | |||
591 | /* |
||
592 | * At this moment, we are using the kernel stack |
||
593 | * and have successfully allocated a register window. |
||
594 | */ |
||
595 | 1: |
||
1862 | jermar | 596 | .endif |
1852 | jermar | 597 | /* |
1857 | jermar | 598 | * Other window spills will go to the userspace window buffer |
599 | * and normal spills will go to the kernel stack. |
||
600 | */ |
||
601 | wrpr %g0, WSTATE_OTHER(0) | WSTATE_NORMAL(0), %wstate |
||
602 | |||
603 | /* |
||
1852 | jermar | 604 | * Copy arguments. |
605 | */ |
||
606 | mov %g1, %l0 |
||
607 | mov %g2, %o0 |
||
608 | |||
609 | /* |
||
610 | * Save TSTATE, TPC and TNPC aside. |
||
611 | */ |
||
667 | jermar | 612 | rdpr %tstate, %g1 |
613 | rdpr %tpc, %g2 |
||
614 | rdpr %tnpc, %g3 |
||
615 | |||
1851 | jermar | 616 | /* |
617 | * The following memory accesses will not fault |
||
618 | * because special provisions are made to have |
||
619 | * the kernel stack of THREAD locked in DTLB. |
||
620 | */ |
||
1852 | jermar | 621 | stx %g1, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TSTATE] |
622 | stx %g2, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TPC] |
||
623 | stx %g3, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TNPC] |
||
667 | jermar | 624 | |
625 | wrpr %g0, 0, %tl |
||
1852 | jermar | 626 | wrpr %g0, PSTATE_PRIV_BIT, %pstate |
666 | jermar | 627 | SAVE_GLOBALS |
667 | jermar | 628 | |
629 | /* |
||
1852 | jermar | 630 | * Call the higher-level handler and pass istate as second parameter. |
667 | jermar | 631 | */ |
666 | jermar | 632 | call %l0 |
1852 | jermar | 633 | add %sp, PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TNPC, %o1 |
634 | |||
1862 | jermar | 635 | .if \is_syscall |
636 | /* |
||
637 | * Copy the value returned by the syscall. |
||
638 | */ |
||
639 | mov %o0, %i0 |
||
640 | .endif |
||
641 | |||
1852 | jermar | 642 | RESTORE_GLOBALS |
643 | wrpr %g0, PSTATE_AG_BIT | PSTATE_PRIV_BIT, %pstate |
||
644 | wrpr %g0, 1, %tl |
||
667 | jermar | 645 | |
646 | /* |
||
1852 | jermar | 647 | * Read TSTATE, TPC and TNPC from saved copy. |
667 | jermar | 648 | */ |
1852 | jermar | 649 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TSTATE], %g1 |
650 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TPC], %g2 |
||
651 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TNPC], %g3 |
||
652 | |||
667 | jermar | 653 | /* |
1852 | jermar | 654 | * Restore TSTATE, TPC and TNPC from saved copies. |
667 | jermar | 655 | */ |
1852 | jermar | 656 | wrpr %g1, 0, %tstate |
657 | wrpr %g2, 0, %tpc |
||
658 | wrpr %g3, 0, %tnpc |
||
659 | |||
667 | jermar | 660 | /* |
1852 | jermar | 661 | * If OTHERWIN is zero, then all the userspace windows have been |
1864 | jermar | 662 | * spilled to kernel memory (i.e. register window buffer). Moreover, |
663 | * if the scheduler was called in the meantime, all valid windows |
||
664 | * belonging to other threads were spilled by context_restore(). |
||
665 | * If OTHERWIN is non-zero, then some userspace windows are still |
||
1852 | jermar | 666 | * valid. Others might have been spilled. However, the CWP pointer |
667 | * needs no fixing because the scheduler had not been called. |
||
667 | jermar | 668 | */ |
1852 | jermar | 669 | rdpr %otherwin, %l0 |
670 | brnz %l0, 0f |
||
671 | nop |
||
672 | |||
667 | jermar | 673 | /* |
1852 | jermar | 674 | * OTHERWIN == 0 |
667 | jermar | 675 | */ |
676 | |||
677 | /* |
||
1852 | jermar | 678 | * If TSTATE.CWP + 1 == CWP, then we still do not have to fix CWP. |
667 | jermar | 679 | */ |
1852 | jermar | 680 | and %g1, TSTATE_CWP_MASK, %l0 |
681 | inc %l0 |
||
1864 | jermar | 682 | and %l0, NWINDOW - 1, %l0 ! %l0 mod NWINDOW |
1852 | jermar | 683 | rdpr %cwp, %l1 |
684 | cmp %l0, %l1 |
||
685 | bz 0f ! CWP is ok |
||
686 | nop |
||
667 | jermar | 687 | |
688 | /* |
||
1852 | jermar | 689 | * Fix CWP. |
1864 | jermar | 690 | * In order to recapitulate, the input registers in the current |
691 | * window are the output registers of the window to which we want |
||
692 | * to restore. Because the fill trap fills only input and local |
||
1855 | jermar | 693 | * registers of a window, we need to preserve those output |
694 | * registers manually. |
||
667 | jermar | 695 | */ |
1857 | jermar | 696 | mov %sp, %g2 |
1855 | jermar | 697 | stx %i0, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I0] |
698 | stx %i1, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I1] |
||
699 | stx %i2, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I2] |
||
700 | stx %i3, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I3] |
||
701 | stx %i4, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I4] |
||
702 | stx %i5, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I5] |
||
703 | stx %i6, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I6] |
||
704 | stx %i7, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I7] |
||
1852 | jermar | 705 | wrpr %l0, 0, %cwp |
1857 | jermar | 706 | mov %g2, %sp |
1855 | jermar | 707 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I0], %i0 |
708 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I1], %i1 |
||
709 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I2], %i2 |
||
710 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I3], %i3 |
||
711 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I4], %i4 |
||
712 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I5], %i5 |
||
713 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I6], %i6 |
||
714 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I7], %i7 |
||
715 | |||
667 | jermar | 716 | /* |
1852 | jermar | 717 | * OTHERWIN != 0 or fall-through from the OTHERWIN == 0 case. |
1857 | jermar | 718 | * The CWP has already been restored to the value it had prior to the SAVE |
719 | * at the beginning of this function. |
||
667 | jermar | 720 | */ |
1852 | jermar | 721 | 0: |
1862 | jermar | 722 | .if NOT(\is_syscall) |
1857 | jermar | 723 | rdpr %tstate, %g1 |
724 | andcc %g1, TSTATE_PRIV_BIT, %g0 ! if we are not returning to userspace..., |
||
725 | bnz 1f ! ...skip restoring userspace windows |
||
726 | nop |
||
1862 | jermar | 727 | .endif |
1858 | jermar | 728 | |
729 | /* |
||
730 | * Spills and fills will be processed by the {spill,fill}_1_normal |
||
731 | * handlers. |
||
732 | */ |
||
733 | wrpr %g0, WSTATE_OTHER(0) | WSTATE_NORMAL(1), %wstate |
||
1860 | jermar | 734 | |
735 | /* |
||
736 | * Set primary context according to secondary context. |
||
737 | */ |
||
738 | wr %g0, ASI_DMMU, %asi |
||
739 | ldxa [VA_SECONDARY_CONTEXT_REG] %asi, %g1 |
||
740 | stxa %g1, [VA_PRIMARY_CONTEXT_REG] %asi |
||
1865 | jermar | 741 | rd %pc, %g1 |
742 | flush %g1 |
||
1857 | jermar | 743 | |
744 | rdpr %cwp, %g1 |
||
745 | rdpr %otherwin, %g2 |
||
1852 | jermar | 746 | |
1857 | jermar | 747 | /* |
748 | * Skip all OTHERWIN windows and descend to the first window |
||
749 | * in the userspace window buffer. |
||
750 | */ |
||
751 | sub %g1, %g2, %g3 |
||
752 | dec %g3 |
||
753 | and %g3, NWINDOW - 1, %g3 |
||
754 | wrpr %g3, 0, %cwp |
||
755 | |||
756 | /* |
||
757 | * CWP is now in the window last saved in the userspace window buffer. |
||
758 | * Fill all windows stored in the buffer. |
||
759 | */ |
||
760 | clr %g4 |
||
1864 | jermar | 761 | set PAGE_SIZE - 1, %g5 |
762 | 0: andcc %g7, %g5, %g0 ! PAGE_SIZE alignment check |
||
1857 | jermar | 763 | bz 0f ! %g7 is page-aligned, no more windows to refill |
764 | nop |
||
765 | |||
766 | add %g7, -STACK_WINDOW_SAVE_AREA_SIZE, %g7 |
||
767 | ldx [%g7 + L0_OFFSET], %l0 |
||
768 | ldx [%g7 + L1_OFFSET], %l1 |
||
769 | ldx [%g7 + L2_OFFSET], %l2 |
||
770 | ldx [%g7 + L3_OFFSET], %l3 |
||
771 | ldx [%g7 + L4_OFFSET], %l4 |
||
772 | ldx [%g7 + L5_OFFSET], %l5 |
||
773 | ldx [%g7 + L6_OFFSET], %l6 |
||
774 | ldx [%g7 + L7_OFFSET], %l7 |
||
775 | ldx [%g7 + I0_OFFSET], %i0 |
||
776 | ldx [%g7 + I1_OFFSET], %i1 |
||
777 | ldx [%g7 + I2_OFFSET], %i2 |
||
778 | ldx [%g7 + I3_OFFSET], %i3 |
||
779 | ldx [%g7 + I4_OFFSET], %i4 |
||
780 | ldx [%g7 + I5_OFFSET], %i5 |
||
781 | ldx [%g7 + I6_OFFSET], %i6 |
||
782 | ldx [%g7 + I7_OFFSET], %i7 |
||
783 | |||
784 | dec %g3 |
||
785 | and %g3, NWINDOW - 1, %g3 |
||
786 | wrpr %g3, 0, %cwp ! switch to the preceeding window |
||
787 | |||
788 | ba 0b |
||
789 | inc %g4 |
||
790 | |||
791 | 0: |
||
792 | /* |
||
793 | * Switch back to the proper current window and adjust |
||
794 | * OTHERWIN, CANRESTORE, CANSAVE and CLEANWIN. |
||
795 | */ |
||
796 | wrpr %g1, 0, %cwp |
||
797 | add %g4, %g2, %g2 |
||
1858 | jermar | 798 | cmp %g2, NWINDOW - 2 |
799 | bg 2f ! fix the CANRESTORE=NWINDOW-1 anomaly |
||
800 | mov NWINDOW - 2, %g1 ! use dealy slot for both cases |
||
1857 | jermar | 801 | sub %g1, %g2, %g1 |
802 | |||
803 | wrpr %g0, 0, %otherwin |
||
804 | wrpr %g1, 0, %cansave ! NWINDOW - 2 - CANRESTORE |
||
805 | wrpr %g2, 0, %canrestore ! OTHERWIN + windows in the buffer |
||
806 | wrpr %g2, 0, %cleanwin ! avoid information leak |
||
807 | |||
1858 | jermar | 808 | 1: |
809 | restore |
||
1862 | jermar | 810 | |
811 | .if \is_syscall |
||
812 | done |
||
813 | .else |
||
1858 | jermar | 814 | retry |
1862 | jermar | 815 | .endif |
1858 | jermar | 816 | |
1857 | jermar | 817 | /* |
1858 | jermar | 818 | * We got here in order to avoid inconsistency of the window state registers. |
819 | * If the: |
||
820 | * |
||
821 | * save %g6, -PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE, %sp |
||
822 | * |
||
823 | * instruction trapped and spilled a register window into the userspace |
||
824 | * window buffer, we have just restored NWINDOW - 1 register windows. |
||
825 | * However, CANRESTORE can be only NWINDOW - 2 at most. |
||
826 | * |
||
827 | * The solution is to manually switch to (CWP - 1) mod NWINDOW |
||
828 | * and set the window state registers so that: |
||
829 | * |
||
830 | * CANRESTORE = NWINDOW - 2 |
||
831 | * CLEANWIN = NWINDOW - 2 |
||
832 | * CANSAVE = 0 |
||
833 | * OTHERWIN = 0 |
||
834 | * |
||
835 | * The RESTORE isntruction is therfore to be skipped. |
||
1857 | jermar | 836 | */ |
1858 | jermar | 837 | 2: |
838 | wrpr %g0, 0, %otherwin |
||
839 | wrpr %g0, 0, %cansave |
||
840 | wrpr %g1, 0, %canrestore |
||
841 | wrpr %g1, 0, %cleanwin |
||
1857 | jermar | 842 | |
1858 | jermar | 843 | rdpr %cwp, %g1 |
844 | dec %g1 |
||
845 | and %g1, NWINDOW - 1, %g1 |
||
846 | wrpr %g1, 0, %cwp ! CWP-- |
||
847 | |||
1862 | jermar | 848 | .if \is_syscall |
849 | done |
||
850 | .else |
||
666 | jermar | 851 | retry |
1862 | jermar | 852 | .endif |
853 | |||
854 | .endm |
||
855 | |||
856 | .global preemptible_handler |
||
857 | preemptible_handler: |
||
858 | PREEMPTIBLE_HANDLER_TEMPLATE 0 |
||
859 | |||
860 | .global trap_instruction_handler |
||
861 | trap_instruction_handler: |
||
862 | PREEMPTIBLE_HANDLER_TEMPLATE 1 |