4.115
Last change
on this file since 305357e was
305357e,
checked in by Hesham ALMatary <heshamelmatary@…>, on 08/31/14 at 23:29:41
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or1k: Implement context validate and context volatile clobber functions.
score/cpu/or1k: Add two new assembly functions: _CPU_Context_validate
and _CPU_Context_volatile_clobber; their implementation follows
corresponding ARM functions.
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Property mode set to
100644
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File size:
3.3 KB
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1 | /* |
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2 | * COPYRIGHT (c) 2014 Hesham ALMatary <heshamelmatary@gmail.com> |
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3 | * |
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4 | * The license and distribution terms for this file may be |
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5 | * found in the file LICENSE in this distribution or at |
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6 | * http://www.rtems.org/license/LICENSE. |
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7 | */ |
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8 | |
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9 | #ifdef HAVE_CONFIG_H |
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10 | #include "config.h" |
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11 | #endif |
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12 | |
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13 | #include <rtems/asm.h> |
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14 | #include <rtems/score/cpu.h> |
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15 | |
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16 | .section .text |
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17 | |
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18 | PUBLIC(_CPU_Context_validate) |
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19 | SYM(_CPU_Context_validate): |
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20 | |
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21 | l.addi r1, r1, -140 |
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22 | |
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23 | l.sw 8(r1), r2 |
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24 | l.sw 12(r1), r3 |
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25 | l.sw 16(r1), r4 |
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26 | l.sw 20(r1), r5 |
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27 | l.sw 24(r1), r6 |
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28 | l.sw 28(r1), r7 |
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29 | l.sw 32(r1), r8 |
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30 | l.sw 36(r1), r9 |
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31 | l.sw 40(r1), r10 |
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32 | l.sw 44(r1), r11 |
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33 | l.sw 48(r1), r12 |
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34 | l.sw 52(r1), r13 |
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35 | l.sw 56(r1), r14 |
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36 | l.sw 60(r1), r15 |
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37 | l.sw 64(r1), r16 |
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38 | l.sw 68(r1), r17 |
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39 | l.sw 72(r1), r18 |
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40 | l.sw 76(r1), r19 |
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41 | l.sw 80(r1), r20 |
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42 | l.sw 84(r1), r21 |
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43 | l.sw 88(r1), r22 |
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44 | l.sw 92(r1), r23 |
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45 | l.sw 96(r1), r24 |
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46 | l.sw 100(r1), r25 |
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47 | l.sw 104(r1), r26 |
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48 | l.sw 108(r1), r27 |
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49 | l.sw 112(r1), r28 |
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50 | l.sw 116(r1), r29 |
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51 | l.sw 120(r1), r30 |
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52 | l.sw 124(r1), r31 |
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53 | |
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54 | /* Fill */ |
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55 | |
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56 | /* r13 is used for temporary values */ |
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57 | l.add r13, r0, r0 |
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58 | |
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59 | /* r31 contains the stack pointer */ |
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60 | l.add r31, r1, r0 |
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61 | |
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62 | .macro fill_register reg |
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63 | l.addi r13, r13, 1 |
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64 | l.addi \reg, r13, 0 |
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65 | .endm |
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66 | |
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67 | fill_register r2 |
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68 | fill_register r3 |
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69 | fill_register r4 |
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70 | fill_register r5 |
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71 | fill_register r6 |
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72 | fill_register r7 |
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73 | fill_register r8 |
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74 | fill_register r9 |
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75 | fill_register r10 |
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76 | fill_register r11 |
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77 | fill_register r12 |
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78 | fill_register r13 |
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79 | fill_register r14 |
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80 | fill_register r15 |
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81 | fill_register r16 |
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82 | fill_register r17 |
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83 | fill_register r18 |
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84 | fill_register r19 |
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85 | fill_register r20 |
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86 | fill_register r21 |
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87 | fill_register r22 |
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88 | fill_register r23 |
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89 | fill_register r24 |
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90 | fill_register r25 |
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91 | fill_register r26 |
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92 | fill_register r27 |
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93 | fill_register r28 |
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94 | fill_register r29 |
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95 | fill_register r30 |
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96 | fill_register r31 |
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97 | |
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98 | /* Check */ |
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99 | check: |
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100 | |
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101 | .macro check_register reg |
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102 | l.addi r13, r13, 1 |
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103 | l.sfne \reg, r13 |
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104 | l.bf restore |
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105 | l.nop |
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106 | .endm |
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107 | |
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108 | l.sfne r31, r1 |
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109 | l.bf restore |
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110 | l.nop |
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111 | |
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112 | l.addi r13, r0, 0 |
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113 | |
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114 | check_register r2 |
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115 | check_register r3 |
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116 | check_register r4 |
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117 | check_register r5 |
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118 | check_register r6 |
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119 | check_register r7 |
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120 | check_register r8 |
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121 | check_register r9 |
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122 | check_register r10 |
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123 | check_register r11 |
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124 | check_register r12 |
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125 | check_register r13 |
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126 | check_register r14 |
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127 | check_register r15 |
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128 | check_register r16 |
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129 | check_register r17 |
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130 | check_register r18 |
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131 | check_register r19 |
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132 | check_register r20 |
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133 | check_register r21 |
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134 | check_register r22 |
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135 | check_register r23 |
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136 | check_register r24 |
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137 | check_register r25 |
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138 | check_register r26 |
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139 | check_register r27 |
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140 | check_register r28 |
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141 | check_register r29 |
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142 | check_register r30 |
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143 | check_register r31 |
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144 | |
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145 | l.j check |
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146 | l.nop |
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147 | |
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148 | /* Restore */ |
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149 | restore: |
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150 | |
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151 | l.lwz r2, 8(r1) |
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152 | l.lwz r3, 12(r1) |
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153 | l.lwz r4, 16(r1) |
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154 | l.lwz r5, 20(r1) |
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155 | l.lwz r6, 24(r1) |
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156 | l.lwz r7, 28(r1) |
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157 | l.lwz r8, 32(r1) |
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158 | l.lwz r9, 36(r1) |
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159 | l.lwz r10, 40(r1) |
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160 | l.lwz r11, 44(r1) |
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161 | l.lwz r12, 48(r1) |
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162 | l.lwz r13, 52(r1) |
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163 | l.lwz r14, 56(r1) |
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164 | l.lwz r15, 60(r1) |
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165 | l.lwz r16, 64(r1) |
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166 | l.lwz r17, 68(r1) |
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167 | l.lwz r18, 72(r1) |
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168 | l.lwz r19, 76(r1) |
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169 | l.lwz r20, 80(r1) |
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170 | l.lwz r21, 84(r1) |
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171 | l.lwz r22, 88(r1) |
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172 | l.lwz r23, 92(r1) |
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173 | l.lwz r24, 96(r1) |
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174 | l.lwz r25, 100(r1) |
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175 | l.lwz r26, 104(r1) |
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176 | l.lwz r27, 108(r1) |
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177 | l.lwz r28, 112(r1) |
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178 | l.lwz r29, 116(r1) |
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179 | l.lwz r30, 120(r1) |
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180 | l.lwz r31, 124(r1) |
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181 | |
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182 | l.addi r1, r1, 140 |
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183 | |
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184 | l.jr r9 |
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185 | l.nop |
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