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1498 | serge | 1 | |
2 | * |
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3 | * Module Name: exstoren - AML Interpreter object store support, |
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4 | * Store to Node (namespace object) |
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5 | * |
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6 | *****************************************************************************/ |
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7 | |||
8 | |||
9 | * |
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10 | * 1. Copyright Notice |
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11 | * |
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12 | * Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp. |
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2216 | Serge | 13 | * All rights reserved. |
1498 | serge | 14 | * |
15 | * 2. License |
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16 | * |
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17 | * 2.1. This is your license from Intel Corp. under its intellectual property |
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18 | * rights. You may have additional license terms from the party that provided |
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19 | * you this software, covering your right to use that party's intellectual |
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20 | * property rights. |
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21 | * |
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22 | * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a |
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23 | * copy of the source code appearing in this file ("Covered Code") an |
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24 | * irrevocable, perpetual, worldwide license under Intel's copyrights in the |
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25 | * base code distributed originally by Intel ("Original Intel Code") to copy, |
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26 | * make derivatives, distribute, use and display any portion of the Covered |
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27 | * Code in any form, with the right to sublicense such rights; and |
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28 | * |
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29 | * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent |
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30 | * license (with the right to sublicense), under only those claims of Intel |
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31 | * patents that are infringed by the Original Intel Code, to make, use, sell, |
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32 | * offer to sell, and import the Covered Code and derivative works thereof |
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33 | * solely to the minimum extent necessary to exercise the above copyright |
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34 | * license, and in no event shall the patent license extend to any additions |
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35 | * to or modifications of the Original Intel Code. No other license or right |
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36 | * is granted directly or by implication, estoppel or otherwise; |
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37 | * |
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38 | * The above copyright and patent license is granted only if the following |
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39 | * conditions are met: |
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40 | * |
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41 | * 3. Conditions |
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42 | * |
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43 | * 3.1. Redistribution of Source with Rights to Further Distribute Source. |
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44 | * Redistribution of source code of any substantial portion of the Covered |
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45 | * Code or modification with rights to further distribute source must include |
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46 | * the above Copyright Notice, the above License, this list of Conditions, |
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47 | * and the following Disclaimer and Export Compliance provision. In addition, |
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48 | * Licensee must cause all Covered Code to which Licensee contributes to |
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49 | * contain a file documenting the changes Licensee made to create that Covered |
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50 | * Code and the date of any change. Licensee must include in that file the |
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51 | * documentation of any changes made by any predecessor Licensee. Licensee |
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52 | * must include a prominent statement that the modification is derived, |
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53 | * directly or indirectly, from Original Intel Code. |
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54 | * |
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55 | * 3.2. Redistribution of Source with no Rights to Further Distribute Source. |
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56 | * Redistribution of source code of any substantial portion of the Covered |
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57 | * Code or modification without rights to further distribute source must |
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58 | * include the following Disclaimer and Export Compliance provision in the |
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59 | * documentation and/or other materials provided with distribution. In |
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60 | * addition, Licensee may not authorize further sublicense of source of any |
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61 | * portion of the Covered Code, and must include terms to the effect that the |
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62 | * license from Licensee to its licensee is limited to the intellectual |
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63 | * property embodied in the software Licensee provides to its licensee, and |
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64 | * not to intellectual property embodied in modifications its licensee may |
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65 | * make. |
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66 | * |
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67 | * 3.3. Redistribution of Executable. Redistribution in executable form of any |
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68 | * substantial portion of the Covered Code or modification must reproduce the |
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69 | * above Copyright Notice, and the following Disclaimer and Export Compliance |
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70 | * provision in the documentation and/or other materials provided with the |
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71 | * distribution. |
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72 | * |
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73 | * 3.4. Intel retains all right, title, and interest in and to the Original |
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74 | * Intel Code. |
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75 | * |
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76 | * 3.5. Neither the name Intel nor any other trademark owned or controlled by |
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77 | * Intel shall be used in advertising or otherwise to promote the sale, use or |
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78 | * other dealings in products derived from or relating to the Covered Code |
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79 | * without prior written authorization from Intel. |
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80 | * |
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81 | * 4. Disclaimer and Export Compliance |
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82 | * |
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83 | * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED |
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84 | * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE |
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85 | * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, |
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86 | * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY |
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87 | * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY |
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88 | * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A |
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89 | * PARTICULAR PURPOSE. |
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90 | * |
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91 | * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES |
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92 | * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR |
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93 | * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, |
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94 | * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY |
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95 | * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL |
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96 | * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS |
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97 | * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY |
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98 | * LIMITED REMEDY. |
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99 | * |
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100 | * 4.3. Licensee shall not export, either directly or indirectly, any of this |
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101 | * software or system incorporating such software without first obtaining any |
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102 | * required license or other approval from the U. S. Department of Commerce or |
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103 | * any other agency or department of the United States Government. In the |
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104 | * event Licensee exports any such software from the United States or |
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105 | * re-exports any such software from a foreign destination, Licensee shall |
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106 | * ensure that the distribution and export/re-export of the software is in |
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107 | * compliance with all laws, regulations, orders, or other restrictions of the |
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108 | * U.S. Export Administration Regulations. Licensee agrees that neither it nor |
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109 | * any of its subsidiaries will export/re-export any technical data, process, |
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110 | * software, or service, directly or indirectly, to any country for which the |
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111 | * United States government or any agency thereof requires an export license, |
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112 | * other governmental approval, or letter of assurance, without first obtaining |
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113 | * such license, approval or letter. |
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114 | * |
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115 | *****************************************************************************/ |
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116 | |||
117 | |||
118 | |||
119 | |||
120 | #include "accommon.h" |
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121 | #include "acinterp.h" |
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122 | #include "amlcode.h" |
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123 | |||
124 | |||
125 | |||
126 | ACPI_MODULE_NAME ("exstoren") |
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127 | |||
128 | |||
129 | |||
130 | * |
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131 | * FUNCTION: AcpiExResolveObject |
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132 | * |
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133 | * PARAMETERS: SourceDescPtr - Pointer to the source object |
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134 | * TargetType - Current type of the target |
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135 | * WalkState - Current walk state |
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136 | * |
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137 | * RETURN: Status, resolved object in SourceDescPtr. |
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138 | * |
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139 | * DESCRIPTION: Resolve an object. If the object is a reference, dereference |
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140 | * it and return the actual object in the SourceDescPtr. |
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141 | * |
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142 | ******************************************************************************/ |
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143 | |||
144 | |||
145 | AcpiExResolveObject ( |
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146 | ACPI_OPERAND_OBJECT **SourceDescPtr, |
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147 | ACPI_OBJECT_TYPE TargetType, |
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148 | ACPI_WALK_STATE *WalkState) |
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149 | { |
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150 | ACPI_OPERAND_OBJECT *SourceDesc = *SourceDescPtr; |
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151 | ACPI_STATUS Status = AE_OK; |
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152 | |||
153 | |||
154 | |||
155 | |||
156 | |||
157 | |||
158 | |||
159 | |||
160 | { |
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161 | case ACPI_TYPE_BUFFER_FIELD: |
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162 | case ACPI_TYPE_LOCAL_REGION_FIELD: |
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163 | case ACPI_TYPE_LOCAL_BANK_FIELD: |
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164 | case ACPI_TYPE_LOCAL_INDEX_FIELD: |
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165 | /* |
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166 | * These cases all require only Integers or values that |
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167 | * can be converted to Integers (Strings or Buffers) |
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168 | */ |
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169 | |||
170 | |||
171 | case ACPI_TYPE_STRING: |
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172 | case ACPI_TYPE_BUFFER: |
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173 | |||
174 | |||
175 | * Stores into a Field/Region or into a Integer/Buffer/String |
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176 | * are all essentially the same. This case handles the |
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177 | * "interchangeable" types Integer, String, and Buffer. |
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178 | */ |
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179 | if (SourceDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) |
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180 | { |
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181 | /* Resolve a reference object first */ |
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182 | |||
183 | |||
184 | if (ACPI_FAILURE (Status)) |
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185 | { |
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186 | break; |
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187 | } |
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188 | } |
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189 | |||
190 | |||
191 | |||
192 | |||
193 | { |
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194 | break; |
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195 | } |
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196 | |||
197 | |||
198 | |||
199 | |||
200 | (SourceDesc->Common.Type != ACPI_TYPE_BUFFER) && |
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201 | (SourceDesc->Common.Type != ACPI_TYPE_STRING) && |
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202 | !((SourceDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) && |
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203 | (SourceDesc->Reference.Class== ACPI_REFCLASS_TABLE))) |
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204 | { |
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205 | /* Conversion successful but still not a valid type */ |
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206 | |||
207 | |||
208 | "Cannot assign type %s to %s (must be type Int/Str/Buf)", |
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209 | AcpiUtGetObjectTypeName (SourceDesc), |
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210 | AcpiUtGetTypeName (TargetType))); |
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211 | Status = AE_AML_OPERAND_TYPE; |
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212 | } |
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213 | break; |
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214 | |||
215 | |||
216 | |||
217 | case ACPI_TYPE_LOCAL_METHOD_ALIAS: |
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218 | |||
219 | |||
220 | * All aliases should have been resolved earlier, during the |
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221 | * operand resolution phase. |
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222 | */ |
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223 | ACPI_ERROR ((AE_INFO, "Store into an unresolved Alias object")); |
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224 | Status = AE_AML_INTERNAL; |
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225 | break; |
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226 | |||
227 | |||
228 | |||
229 | default: |
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230 | |||
231 | |||
232 | * All other types than Alias and the various Fields come here, |
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233 | * including the untyped case - ACPI_TYPE_ANY. |
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234 | */ |
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235 | break; |
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236 | } |
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237 | |||
238 | |||
239 | } |
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240 | |||
241 | |||
242 | |||
243 | * |
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244 | * FUNCTION: AcpiExStoreObjectToObject |
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245 | * |
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246 | * PARAMETERS: SourceDesc - Object to store |
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247 | * DestDesc - Object to receive a copy of the source |
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248 | * NewDesc - New object if DestDesc is obsoleted |
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249 | * WalkState - Current walk state |
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250 | * |
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251 | * RETURN: Status |
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252 | * |
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253 | * DESCRIPTION: "Store" an object to another object. This may include |
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254 | * converting the source type to the target type (implicit |
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255 | * conversion), and a copy of the value of the source to |
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256 | * the target. |
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257 | * |
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258 | * The Assignment of an object to another (not named) object |
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259 | * is handled here. |
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260 | * The Source passed in will replace the current value (if any) |
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261 | * with the input value. |
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262 | * |
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263 | * When storing into an object the data is converted to the |
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264 | * target object type then stored in the object. This means |
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265 | * that the target object type (for an initialized target) will |
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266 | * not be changed by a store operation. |
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267 | * |
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268 | * This module allows destination types of Number, String, |
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269 | * Buffer, and Package. |
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270 | * |
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271 | * Assumes parameters are already validated. NOTE: SourceDesc |
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272 | * resolution (from a reference object) must be performed by |
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273 | * the caller if necessary. |
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274 | * |
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275 | ******************************************************************************/ |
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276 | |||
277 | |||
278 | AcpiExStoreObjectToObject ( |
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279 | ACPI_OPERAND_OBJECT *SourceDesc, |
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280 | ACPI_OPERAND_OBJECT *DestDesc, |
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281 | ACPI_OPERAND_OBJECT **NewDesc, |
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282 | ACPI_WALK_STATE *WalkState) |
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283 | { |
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284 | ACPI_OPERAND_OBJECT *ActualSrcDesc; |
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285 | ACPI_STATUS Status = AE_OK; |
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286 | |||
287 | |||
288 | |||
289 | |||
290 | |||
291 | |||
292 | if (!DestDesc) |
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293 | { |
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294 | /* |
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295 | * There is no destination object (An uninitialized node or |
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296 | * package element), so we can simply copy the source object |
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297 | * creating a new destination object |
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298 | */ |
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299 | Status = AcpiUtCopyIobjectToIobject (ActualSrcDesc, NewDesc, WalkState); |
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300 | return_ACPI_STATUS (Status); |
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301 | } |
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302 | |||
303 | |||
304 | { |
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305 | /* |
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306 | * The source type does not match the type of the destination. |
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307 | * Perform the "implicit conversion" of the source to the current type |
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308 | * of the target as per the ACPI specification. |
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309 | * |
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310 | * If no conversion performed, ActualSrcDesc = SourceDesc. |
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311 | * Otherwise, ActualSrcDesc is a temporary object to hold the |
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312 | * converted object. |
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313 | */ |
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314 | Status = AcpiExConvertToTargetType (DestDesc->Common.Type, |
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315 | SourceDesc, &ActualSrcDesc, WalkState); |
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316 | if (ACPI_FAILURE (Status)) |
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317 | { |
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318 | return_ACPI_STATUS (Status); |
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319 | } |
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320 | |||
321 | |||
322 | { |
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323 | /* |
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324 | * No conversion was performed. Return the SourceDesc as the |
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325 | * new object. |
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326 | */ |
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327 | *NewDesc = SourceDesc; |
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328 | return_ACPI_STATUS (AE_OK); |
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329 | } |
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330 | } |
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331 | |||
332 | |||
333 | * We now have two objects of identical types, and we can perform a |
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334 | * copy of the *value* of the source object. |
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335 | */ |
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336 | switch (DestDesc->Common.Type) |
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337 | { |
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338 | case ACPI_TYPE_INTEGER: |
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339 | |||
340 | |||
341 | |||
342 | |||
343 | |||
344 | |||
345 | break; |
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346 | |||
347 | |||
348 | |||
349 | |||
350 | break; |
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351 | |||
352 | |||
353 | |||
354 | |||
355 | break; |
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356 | |||
357 | |||
358 | |||
359 | |||
360 | WalkState); |
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361 | break; |
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362 | |||
363 | |||
364 | /* |
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365 | * All other types come here. |
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366 | */ |
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367 | ACPI_WARNING ((AE_INFO, "Store into type %s not implemented", |
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368 | AcpiUtGetObjectTypeName (DestDesc))); |
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369 | |||
370 | |||
371 | break; |
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372 | } |
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373 | |||
374 | |||
375 | { |
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376 | /* Delete the intermediate (temporary) source object */ |
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377 | |||
378 | |||
379 | } |
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380 | |||
381 | |||
382 | return_ACPI_STATUS (Status); |
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383 | } |
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384 |