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6595 | serge | 1 | /****************************************************************************** |
2 | * |
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3 | * Module Name: exoparg2 - AML execution - opcodes with 2 arguments |
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4 | * |
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5 | *****************************************************************************/ |
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6 | |||
7 | /* |
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8 | * Copyright (C) 2000 - 2015, Intel Corp. |
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9 | * All rights reserved. |
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10 | * |
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11 | * Redistribution and use in source and binary forms, with or without |
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12 | * modification, are permitted provided that the following conditions |
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13 | * are met: |
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14 | * 1. Redistributions of source code must retain the above copyright |
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15 | * notice, this list of conditions, and the following disclaimer, |
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16 | * without modification. |
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17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
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18 | * substantially similar to the "NO WARRANTY" disclaimer below |
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19 | * ("Disclaimer") and any redistribution must be conditioned upon |
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20 | * including a substantially similar Disclaimer requirement for further |
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21 | * binary redistribution. |
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22 | * 3. Neither the names of the above-listed copyright holders nor the names |
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23 | * of any contributors may be used to endorse or promote products derived |
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24 | * from this software without specific prior written permission. |
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25 | * |
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26 | * Alternatively, this software may be distributed under the terms of the |
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27 | * GNU General Public License ("GPL") version 2 as published by the Free |
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28 | * Software Foundation. |
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29 | * |
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30 | * NO WARRANTY |
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31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
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34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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41 | * POSSIBILITY OF SUCH DAMAGES. |
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42 | */ |
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43 | |||
44 | #include |
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45 | #include "accommon.h" |
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46 | #include "acparser.h" |
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47 | #include "acinterp.h" |
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48 | #include "acevents.h" |
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49 | #include "amlcode.h" |
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50 | |||
51 | #define _COMPONENT ACPI_EXECUTER |
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52 | ACPI_MODULE_NAME("exoparg2") |
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53 | |||
54 | /*! |
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55 | * Naming convention for AML interpreter execution routines. |
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56 | * |
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57 | * The routines that begin execution of AML opcodes are named with a common |
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58 | * convention based upon the number of arguments, the number of target operands, |
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59 | * and whether or not a value is returned: |
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60 | * |
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61 | * AcpiExOpcode_xA_yT_zR |
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62 | * |
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63 | * Where: |
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64 | * |
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65 | * xA - ARGUMENTS: The number of arguments (input operands) that are |
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66 | * required for this opcode type (1 through 6 args). |
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67 | * yT - TARGETS: The number of targets (output operands) that are required |
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68 | * for this opcode type (0, 1, or 2 targets). |
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69 | * zR - RETURN VALUE: Indicates whether this opcode type returns a value |
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70 | * as the function return (0 or 1). |
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71 | * |
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72 | * The AcpiExOpcode* functions are called via the Dispatcher component with |
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73 | * fully resolved operands. |
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74 | !*/ |
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75 | /******************************************************************************* |
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76 | * |
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77 | * FUNCTION: acpi_ex_opcode_2A_0T_0R |
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78 | * |
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79 | * PARAMETERS: walk_state - Current walk state |
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80 | * |
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81 | * RETURN: Status |
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82 | * |
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83 | * DESCRIPTION: Execute opcode with two arguments, no target, and no return |
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84 | * value. |
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85 | * |
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86 | * ALLOCATION: Deletes both operands |
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87 | * |
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88 | ******************************************************************************/ |
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89 | acpi_status acpi_ex_opcode_2A_0T_0R(struct acpi_walk_state *walk_state) |
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90 | { |
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91 | union acpi_operand_object **operand = &walk_state->operands[0]; |
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92 | struct acpi_namespace_node *node; |
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93 | u32 value; |
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94 | acpi_status status = AE_OK; |
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95 | |||
96 | ACPI_FUNCTION_TRACE_STR(ex_opcode_2A_0T_0R, |
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97 | acpi_ps_get_opcode_name(walk_state->opcode)); |
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98 | |||
99 | /* Examine the opcode */ |
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100 | |||
101 | switch (walk_state->opcode) { |
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102 | case AML_NOTIFY_OP: /* Notify (notify_object, notify_value) */ |
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103 | |||
104 | /* The first operand is a namespace node */ |
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105 | |||
106 | node = (struct acpi_namespace_node *)operand[0]; |
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107 | |||
108 | /* Second value is the notify value */ |
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109 | |||
110 | value = (u32) operand[1]->integer.value; |
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111 | |||
112 | /* Are notifies allowed on this object? */ |
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113 | |||
114 | if (!acpi_ev_is_notify_object(node)) { |
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115 | ACPI_ERROR((AE_INFO, |
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116 | "Unexpected notify object type [%s]", |
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117 | acpi_ut_get_type_name(node->type))); |
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118 | |||
119 | status = AE_AML_OPERAND_TYPE; |
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120 | break; |
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121 | } |
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122 | |||
123 | /* |
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124 | * Dispatch the notify to the appropriate handler |
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125 | * NOTE: the request is queued for execution after this method |
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126 | * completes. The notify handlers are NOT invoked synchronously |
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127 | * from this thread -- because handlers may in turn run other |
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128 | * control methods. |
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129 | */ |
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130 | status = acpi_ev_queue_notify_request(node, value); |
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131 | break; |
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132 | |||
133 | default: |
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134 | |||
135 | ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X", |
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136 | walk_state->opcode)); |
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137 | status = AE_AML_BAD_OPCODE; |
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138 | } |
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139 | |||
140 | return_ACPI_STATUS(status); |
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141 | } |
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142 | |||
143 | /******************************************************************************* |
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144 | * |
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145 | * FUNCTION: acpi_ex_opcode_2A_2T_1R |
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146 | * |
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147 | * PARAMETERS: walk_state - Current walk state |
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148 | * |
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149 | * RETURN: Status |
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150 | * |
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151 | * DESCRIPTION: Execute a dyadic operator (2 operands) with 2 output targets |
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152 | * and one implicit return value. |
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153 | * |
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154 | ******************************************************************************/ |
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155 | |||
156 | acpi_status acpi_ex_opcode_2A_2T_1R(struct acpi_walk_state *walk_state) |
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157 | { |
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158 | union acpi_operand_object **operand = &walk_state->operands[0]; |
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159 | union acpi_operand_object *return_desc1 = NULL; |
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160 | union acpi_operand_object *return_desc2 = NULL; |
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161 | acpi_status status; |
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162 | |||
163 | ACPI_FUNCTION_TRACE_STR(ex_opcode_2A_2T_1R, |
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164 | acpi_ps_get_opcode_name(walk_state->opcode)); |
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165 | |||
166 | /* Execute the opcode */ |
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167 | |||
168 | switch (walk_state->opcode) { |
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169 | case AML_DIVIDE_OP: |
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170 | |||
171 | /* Divide (Dividend, Divisor, remainder_result quotient_result) */ |
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172 | |||
173 | return_desc1 = |
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174 | acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
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175 | if (!return_desc1) { |
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176 | status = AE_NO_MEMORY; |
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177 | goto cleanup; |
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178 | } |
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179 | |||
180 | return_desc2 = |
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181 | acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
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182 | if (!return_desc2) { |
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183 | status = AE_NO_MEMORY; |
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184 | goto cleanup; |
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185 | } |
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186 | |||
187 | /* Quotient to return_desc1, remainder to return_desc2 */ |
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188 | |||
189 | status = acpi_ut_divide(operand[0]->integer.value, |
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190 | operand[1]->integer.value, |
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191 | &return_desc1->integer.value, |
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192 | &return_desc2->integer.value); |
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193 | if (ACPI_FAILURE(status)) { |
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194 | goto cleanup; |
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195 | } |
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196 | break; |
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197 | |||
198 | default: |
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199 | |||
200 | ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X", |
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201 | walk_state->opcode)); |
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202 | status = AE_AML_BAD_OPCODE; |
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203 | goto cleanup; |
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204 | } |
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205 | |||
206 | /* Store the results to the target reference operands */ |
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207 | |||
208 | status = acpi_ex_store(return_desc2, operand[2], walk_state); |
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209 | if (ACPI_FAILURE(status)) { |
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210 | goto cleanup; |
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211 | } |
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212 | |||
213 | status = acpi_ex_store(return_desc1, operand[3], walk_state); |
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214 | if (ACPI_FAILURE(status)) { |
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215 | goto cleanup; |
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216 | } |
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217 | |||
218 | cleanup: |
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219 | /* |
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220 | * Since the remainder is not returned indirectly, remove a reference to |
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221 | * it. Only the quotient is returned indirectly. |
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222 | */ |
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223 | acpi_ut_remove_reference(return_desc2); |
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224 | |||
225 | if (ACPI_FAILURE(status)) { |
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226 | |||
227 | /* Delete the return object */ |
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228 | |||
229 | acpi_ut_remove_reference(return_desc1); |
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230 | } |
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231 | |||
232 | /* Save return object (the remainder) on success */ |
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233 | |||
234 | else { |
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235 | walk_state->result_obj = return_desc1; |
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236 | } |
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237 | |||
238 | return_ACPI_STATUS(status); |
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239 | } |
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240 | |||
241 | /******************************************************************************* |
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242 | * |
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243 | * FUNCTION: acpi_ex_opcode_2A_1T_1R |
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244 | * |
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245 | * PARAMETERS: walk_state - Current walk state |
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246 | * |
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247 | * RETURN: Status |
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248 | * |
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249 | * DESCRIPTION: Execute opcode with two arguments, one target, and a return |
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250 | * value. |
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251 | * |
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252 | ******************************************************************************/ |
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253 | |||
254 | acpi_status acpi_ex_opcode_2A_1T_1R(struct acpi_walk_state *walk_state) |
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255 | { |
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256 | union acpi_operand_object **operand = &walk_state->operands[0]; |
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257 | union acpi_operand_object *return_desc = NULL; |
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258 | u64 index; |
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259 | acpi_status status = AE_OK; |
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260 | acpi_size length = 0; |
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261 | |||
262 | ACPI_FUNCTION_TRACE_STR(ex_opcode_2A_1T_1R, |
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263 | acpi_ps_get_opcode_name(walk_state->opcode)); |
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264 | |||
265 | /* Execute the opcode */ |
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266 | |||
267 | if (walk_state->op_info->flags & AML_MATH) { |
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268 | |||
269 | /* All simple math opcodes (add, etc.) */ |
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270 | |||
271 | return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
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272 | if (!return_desc) { |
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273 | status = AE_NO_MEMORY; |
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274 | goto cleanup; |
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275 | } |
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276 | |||
277 | return_desc->integer.value = |
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278 | acpi_ex_do_math_op(walk_state->opcode, |
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279 | operand[0]->integer.value, |
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280 | operand[1]->integer.value); |
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281 | goto store_result_to_target; |
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282 | } |
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283 | |||
284 | switch (walk_state->opcode) { |
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285 | case AML_MOD_OP: /* Mod (Dividend, Divisor, remainder_result (ACPI 2.0) */ |
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286 | |||
287 | return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
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288 | if (!return_desc) { |
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289 | status = AE_NO_MEMORY; |
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290 | goto cleanup; |
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291 | } |
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292 | |||
293 | /* return_desc will contain the remainder */ |
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294 | |||
295 | status = acpi_ut_divide(operand[0]->integer.value, |
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296 | operand[1]->integer.value, |
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297 | NULL, &return_desc->integer.value); |
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298 | break; |
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299 | |||
300 | case AML_CONCAT_OP: /* Concatenate (Data1, Data2, Result) */ |
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301 | |||
302 | status = acpi_ex_do_concatenate(operand[0], operand[1], |
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303 | &return_desc, walk_state); |
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304 | break; |
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305 | |||
306 | case AML_TO_STRING_OP: /* to_string (Buffer, Length, Result) (ACPI 2.0) */ |
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307 | /* |
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308 | * Input object is guaranteed to be a buffer at this point (it may have |
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309 | * been converted.) Copy the raw buffer data to a new object of |
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310 | * type String. |
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311 | */ |
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312 | |||
313 | /* |
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314 | * Get the length of the new string. It is the smallest of: |
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315 | * 1) Length of the input buffer |
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316 | * 2) Max length as specified in the to_string operator |
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317 | * 3) Length of input buffer up to a zero byte (null terminator) |
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318 | * |
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319 | * NOTE: A length of zero is ok, and will create a zero-length, null |
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320 | * terminated string. |
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321 | */ |
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322 | while ((length < operand[0]->buffer.length) && |
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323 | (length < operand[1]->integer.value) && |
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324 | (operand[0]->buffer.pointer[length])) { |
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325 | length++; |
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326 | } |
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327 | |||
328 | /* Allocate a new string object */ |
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329 | |||
330 | return_desc = acpi_ut_create_string_object(length); |
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331 | if (!return_desc) { |
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332 | status = AE_NO_MEMORY; |
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333 | goto cleanup; |
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334 | } |
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335 | |||
336 | /* |
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337 | * Copy the raw buffer data with no transform. |
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338 | * (NULL terminated already) |
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339 | */ |
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340 | memcpy(return_desc->string.pointer, |
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341 | operand[0]->buffer.pointer, length); |
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342 | break; |
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343 | |||
344 | case AML_CONCAT_RES_OP: |
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345 | |||
346 | /* concatenate_res_template (Buffer, Buffer, Result) (ACPI 2.0) */ |
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347 | |||
348 | status = acpi_ex_concat_template(operand[0], operand[1], |
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349 | &return_desc, walk_state); |
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350 | break; |
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351 | |||
352 | case AML_INDEX_OP: /* Index (Source Index Result) */ |
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353 | |||
354 | /* Create the internal return object */ |
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355 | |||
356 | return_desc = |
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357 | acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_REFERENCE); |
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358 | if (!return_desc) { |
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359 | status = AE_NO_MEMORY; |
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360 | goto cleanup; |
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361 | } |
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362 | |||
363 | /* Initialize the Index reference object */ |
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364 | |||
365 | index = operand[1]->integer.value; |
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366 | return_desc->reference.value = (u32) index; |
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367 | return_desc->reference.class = ACPI_REFCLASS_INDEX; |
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368 | |||
369 | /* |
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370 | * At this point, the Source operand is a String, Buffer, or Package. |
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371 | * Verify that the index is within range. |
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372 | */ |
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373 | switch ((operand[0])->common.type) { |
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374 | case ACPI_TYPE_STRING: |
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375 | |||
376 | if (index >= operand[0]->string.length) { |
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377 | length = operand[0]->string.length; |
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378 | status = AE_AML_STRING_LIMIT; |
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379 | } |
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380 | |||
381 | return_desc->reference.target_type = |
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382 | ACPI_TYPE_BUFFER_FIELD; |
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383 | return_desc->reference.index_pointer = |
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384 | &(operand[0]->buffer.pointer[index]); |
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385 | break; |
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386 | |||
387 | case ACPI_TYPE_BUFFER: |
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388 | |||
389 | if (index >= operand[0]->buffer.length) { |
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390 | length = operand[0]->buffer.length; |
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391 | status = AE_AML_BUFFER_LIMIT; |
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392 | } |
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393 | |||
394 | return_desc->reference.target_type = |
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395 | ACPI_TYPE_BUFFER_FIELD; |
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396 | return_desc->reference.index_pointer = |
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397 | &(operand[0]->buffer.pointer[index]); |
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398 | break; |
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399 | |||
400 | case ACPI_TYPE_PACKAGE: |
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401 | |||
402 | if (index >= operand[0]->package.count) { |
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403 | length = operand[0]->package.count; |
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404 | status = AE_AML_PACKAGE_LIMIT; |
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405 | } |
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406 | |||
407 | return_desc->reference.target_type = ACPI_TYPE_PACKAGE; |
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408 | return_desc->reference.where = |
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409 | &operand[0]->package.elements[index]; |
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410 | break; |
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411 | |||
412 | default: |
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413 | |||
414 | status = AE_AML_INTERNAL; |
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415 | goto cleanup; |
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416 | } |
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417 | |||
418 | /* Failure means that the Index was beyond the end of the object */ |
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419 | |||
420 | if (ACPI_FAILURE(status)) { |
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421 | ACPI_EXCEPTION((AE_INFO, status, |
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422 | "Index (0x%X%8.8X) is beyond end of object (length 0x%X)", |
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423 | ACPI_FORMAT_UINT64(index), |
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424 | (u32)length)); |
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425 | goto cleanup; |
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426 | } |
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427 | |||
428 | /* |
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429 | * Save the target object and add a reference to it for the life |
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430 | * of the index |
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431 | */ |
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432 | return_desc->reference.object = operand[0]; |
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433 | acpi_ut_add_reference(operand[0]); |
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434 | |||
435 | /* Store the reference to the Target */ |
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436 | |||
437 | status = acpi_ex_store(return_desc, operand[2], walk_state); |
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438 | |||
439 | /* Return the reference */ |
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440 | |||
441 | walk_state->result_obj = return_desc; |
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442 | goto cleanup; |
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443 | |||
444 | default: |
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445 | |||
446 | ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X", |
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447 | walk_state->opcode)); |
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448 | status = AE_AML_BAD_OPCODE; |
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449 | break; |
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450 | } |
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451 | |||
452 | store_result_to_target: |
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453 | |||
454 | if (ACPI_SUCCESS(status)) { |
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455 | /* |
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456 | * Store the result of the operation (which is now in return_desc) into |
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457 | * the Target descriptor. |
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458 | */ |
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459 | status = acpi_ex_store(return_desc, operand[2], walk_state); |
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460 | if (ACPI_FAILURE(status)) { |
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461 | goto cleanup; |
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462 | } |
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463 | |||
464 | if (!walk_state->result_obj) { |
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465 | walk_state->result_obj = return_desc; |
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466 | } |
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467 | } |
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468 | |||
469 | cleanup: |
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470 | |||
471 | /* Delete return object on error */ |
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472 | |||
473 | if (ACPI_FAILURE(status)) { |
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474 | acpi_ut_remove_reference(return_desc); |
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475 | walk_state->result_obj = NULL; |
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476 | } |
||
477 | |||
478 | return_ACPI_STATUS(status); |
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479 | } |
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480 | |||
481 | /******************************************************************************* |
||
482 | * |
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483 | * FUNCTION: acpi_ex_opcode_2A_0T_1R |
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484 | * |
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485 | * PARAMETERS: walk_state - Current walk state |
||
486 | * |
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487 | * RETURN: Status |
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488 | * |
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489 | * DESCRIPTION: Execute opcode with 2 arguments, no target, and a return value |
||
490 | * |
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491 | ******************************************************************************/ |
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492 | |||
493 | acpi_status acpi_ex_opcode_2A_0T_1R(struct acpi_walk_state *walk_state) |
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494 | { |
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495 | union acpi_operand_object **operand = &walk_state->operands[0]; |
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496 | union acpi_operand_object *return_desc = NULL; |
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497 | acpi_status status = AE_OK; |
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498 | u8 logical_result = FALSE; |
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499 | |||
500 | ACPI_FUNCTION_TRACE_STR(ex_opcode_2A_0T_1R, |
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501 | acpi_ps_get_opcode_name(walk_state->opcode)); |
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502 | |||
503 | /* Create the internal return object */ |
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504 | |||
505 | return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
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506 | if (!return_desc) { |
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507 | status = AE_NO_MEMORY; |
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508 | goto cleanup; |
||
509 | } |
||
510 | |||
511 | /* Execute the Opcode */ |
||
512 | |||
513 | if (walk_state->op_info->flags & AML_LOGICAL_NUMERIC) { |
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514 | |||
515 | /* logical_op (Operand0, Operand1) */ |
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516 | |||
517 | status = acpi_ex_do_logical_numeric_op(walk_state->opcode, |
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518 | operand[0]->integer. |
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519 | value, |
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520 | operand[1]->integer. |
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521 | value, &logical_result); |
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522 | goto store_logical_result; |
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523 | } else if (walk_state->op_info->flags & AML_LOGICAL) { |
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524 | |||
525 | /* logical_op (Operand0, Operand1) */ |
||
526 | |||
527 | status = acpi_ex_do_logical_op(walk_state->opcode, operand[0], |
||
528 | operand[1], &logical_result); |
||
529 | goto store_logical_result; |
||
530 | } |
||
531 | |||
532 | switch (walk_state->opcode) { |
||
533 | case AML_ACQUIRE_OP: /* Acquire (mutex_object, Timeout) */ |
||
534 | |||
535 | status = |
||
536 | acpi_ex_acquire_mutex(operand[1], operand[0], walk_state); |
||
537 | if (status == AE_TIME) { |
||
538 | logical_result = TRUE; /* TRUE = Acquire timed out */ |
||
539 | status = AE_OK; |
||
540 | } |
||
541 | break; |
||
542 | |||
543 | case AML_WAIT_OP: /* Wait (event_object, Timeout) */ |
||
544 | |||
545 | status = acpi_ex_system_wait_event(operand[1], operand[0]); |
||
546 | if (status == AE_TIME) { |
||
547 | logical_result = TRUE; /* TRUE, Wait timed out */ |
||
548 | status = AE_OK; |
||
549 | } |
||
550 | break; |
||
551 | |||
552 | default: |
||
553 | |||
554 | ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X", |
||
555 | walk_state->opcode)); |
||
556 | status = AE_AML_BAD_OPCODE; |
||
557 | goto cleanup; |
||
558 | } |
||
559 | |||
560 | store_logical_result: |
||
561 | /* |
||
562 | * Set return value to according to logical_result. logical TRUE (all ones) |
||
563 | * Default is FALSE (zero) |
||
564 | */ |
||
565 | if (logical_result) { |
||
566 | return_desc->integer.value = ACPI_UINT64_MAX; |
||
567 | } |
||
568 | |||
569 | cleanup: |
||
570 | |||
571 | /* Delete return object on error */ |
||
572 | |||
573 | if (ACPI_FAILURE(status)) { |
||
574 | acpi_ut_remove_reference(return_desc); |
||
575 | } |
||
576 | |||
577 | /* Save return object on success */ |
||
578 | |||
579 | else { |
||
580 | walk_state->result_obj = return_desc; |
||
581 | } |
||
582 | |||
583 | return_ACPI_STATUS(status); |
||
584 | }>> |