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1498 | serge | 1 | /****************************************************************************** |
2 | * |
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3 | * Module Name: pstree - Parser op tree manipulation/traversal/search |
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4 | * |
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5 | *****************************************************************************/ |
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6 | |||
7 | /****************************************************************************** |
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8 | * |
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9 | * 1. Copyright Notice |
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10 | * |
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2216 | Serge | 11 | * Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp. |
1498 | serge | 12 | * All rights reserved. |
13 | * |
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14 | * 2. License |
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15 | * |
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16 | * 2.1. This is your license from Intel Corp. under its intellectual property |
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17 | * rights. You may have additional license terms from the party that provided |
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18 | * you this software, covering your right to use that party's intellectual |
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19 | * property rights. |
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20 | * |
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21 | * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a |
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22 | * copy of the source code appearing in this file ("Covered Code") an |
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23 | * irrevocable, perpetual, worldwide license under Intel's copyrights in the |
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24 | * base code distributed originally by Intel ("Original Intel Code") to copy, |
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25 | * make derivatives, distribute, use and display any portion of the Covered |
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26 | * Code in any form, with the right to sublicense such rights; and |
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27 | * |
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28 | * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent |
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29 | * license (with the right to sublicense), under only those claims of Intel |
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30 | * patents that are infringed by the Original Intel Code, to make, use, sell, |
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31 | * offer to sell, and import the Covered Code and derivative works thereof |
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32 | * solely to the minimum extent necessary to exercise the above copyright |
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33 | * license, and in no event shall the patent license extend to any additions |
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34 | * to or modifications of the Original Intel Code. No other license or right |
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35 | * is granted directly or by implication, estoppel or otherwise; |
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36 | * |
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37 | * The above copyright and patent license is granted only if the following |
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38 | * conditions are met: |
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39 | * |
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40 | * 3. Conditions |
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41 | * |
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42 | * 3.1. Redistribution of Source with Rights to Further Distribute Source. |
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43 | * Redistribution of source code of any substantial portion of the Covered |
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44 | * Code or modification with rights to further distribute source must include |
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45 | * the above Copyright Notice, the above License, this list of Conditions, |
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46 | * and the following Disclaimer and Export Compliance provision. In addition, |
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47 | * Licensee must cause all Covered Code to which Licensee contributes to |
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48 | * contain a file documenting the changes Licensee made to create that Covered |
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49 | * Code and the date of any change. Licensee must include in that file the |
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50 | * documentation of any changes made by any predecessor Licensee. Licensee |
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51 | * must include a prominent statement that the modification is derived, |
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52 | * directly or indirectly, from Original Intel Code. |
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53 | * |
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54 | * 3.2. Redistribution of Source with no Rights to Further Distribute Source. |
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55 | * Redistribution of source code of any substantial portion of the Covered |
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56 | * Code or modification without rights to further distribute source must |
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57 | * include the following Disclaimer and Export Compliance provision in the |
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58 | * documentation and/or other materials provided with distribution. In |
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59 | * addition, Licensee may not authorize further sublicense of source of any |
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60 | * portion of the Covered Code, and must include terms to the effect that the |
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61 | * license from Licensee to its licensee is limited to the intellectual |
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62 | * property embodied in the software Licensee provides to its licensee, and |
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63 | * not to intellectual property embodied in modifications its licensee may |
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64 | * make. |
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65 | * |
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66 | * 3.3. Redistribution of Executable. Redistribution in executable form of any |
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67 | * substantial portion of the Covered Code or modification must reproduce the |
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68 | * above Copyright Notice, and the following Disclaimer and Export Compliance |
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69 | * provision in the documentation and/or other materials provided with the |
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70 | * distribution. |
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71 | * |
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72 | * 3.4. Intel retains all right, title, and interest in and to the Original |
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73 | * Intel Code. |
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74 | * |
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75 | * 3.5. Neither the name Intel nor any other trademark owned or controlled by |
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76 | * Intel shall be used in advertising or otherwise to promote the sale, use or |
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77 | * other dealings in products derived from or relating to the Covered Code |
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78 | * without prior written authorization from Intel. |
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79 | * |
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80 | * 4. Disclaimer and Export Compliance |
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81 | * |
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82 | * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED |
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83 | * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE |
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84 | * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, |
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85 | * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY |
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86 | * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY |
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87 | * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A |
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88 | * PARTICULAR PURPOSE. |
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89 | * |
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90 | * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES |
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91 | * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR |
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92 | * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, |
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93 | * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY |
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94 | * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL |
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95 | * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS |
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96 | * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY |
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97 | * LIMITED REMEDY. |
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98 | * |
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99 | * 4.3. Licensee shall not export, either directly or indirectly, any of this |
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100 | * software or system incorporating such software without first obtaining any |
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101 | * required license or other approval from the U. S. Department of Commerce or |
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102 | * any other agency or department of the United States Government. In the |
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103 | * event Licensee exports any such software from the United States or |
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104 | * re-exports any such software from a foreign destination, Licensee shall |
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105 | * ensure that the distribution and export/re-export of the software is in |
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106 | * compliance with all laws, regulations, orders, or other restrictions of the |
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107 | * U.S. Export Administration Regulations. Licensee agrees that neither it nor |
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108 | * any of its subsidiaries will export/re-export any technical data, process, |
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109 | * software, or service, directly or indirectly, to any country for which the |
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110 | * United States government or any agency thereof requires an export license, |
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111 | * other governmental approval, or letter of assurance, without first obtaining |
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112 | * such license, approval or letter. |
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113 | * |
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114 | *****************************************************************************/ |
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115 | |||
116 | |||
117 | #define __PSTREE_C__ |
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118 | |||
119 | #include "acpi.h" |
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120 | #include "accommon.h" |
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121 | #include "acparser.h" |
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122 | #include "amlcode.h" |
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123 | |||
124 | #define _COMPONENT ACPI_PARSER |
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125 | ACPI_MODULE_NAME ("pstree") |
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126 | |||
127 | /* Local prototypes */ |
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128 | |||
129 | #ifdef ACPI_OBSOLETE_FUNCTIONS |
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130 | ACPI_PARSE_OBJECT * |
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131 | AcpiPsGetChild ( |
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132 | ACPI_PARSE_OBJECT *op); |
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133 | #endif |
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134 | |||
135 | |||
136 | /******************************************************************************* |
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137 | * |
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138 | * FUNCTION: AcpiPsGetArg |
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139 | * |
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140 | * PARAMETERS: Op - Get an argument for this op |
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141 | * Argn - Nth argument to get |
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142 | * |
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143 | * RETURN: The argument (as an Op object). NULL if argument does not exist |
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144 | * |
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145 | * DESCRIPTION: Get the specified op's argument. |
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146 | * |
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147 | ******************************************************************************/ |
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148 | |||
149 | ACPI_PARSE_OBJECT * |
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150 | AcpiPsGetArg ( |
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151 | ACPI_PARSE_OBJECT *Op, |
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152 | UINT32 Argn) |
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153 | { |
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154 | ACPI_PARSE_OBJECT *Arg = NULL; |
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155 | const ACPI_OPCODE_INFO *OpInfo; |
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156 | |||
157 | |||
158 | ACPI_FUNCTION_ENTRY (); |
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159 | |||
160 | |||
161 | /* Get the info structure for this opcode */ |
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162 | |||
163 | OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); |
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164 | if (OpInfo->Class == AML_CLASS_UNKNOWN) |
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165 | { |
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166 | /* Invalid opcode or ASCII character */ |
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167 | |||
168 | return (NULL); |
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169 | } |
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170 | |||
171 | /* Check if this opcode requires argument sub-objects */ |
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172 | |||
173 | if (!(OpInfo->Flags & AML_HAS_ARGS)) |
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174 | { |
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175 | /* Has no linked argument objects */ |
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176 | |||
177 | return (NULL); |
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178 | } |
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179 | |||
180 | /* Get the requested argument object */ |
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181 | |||
182 | Arg = Op->Common.Value.Arg; |
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183 | while (Arg && Argn) |
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184 | { |
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185 | Argn--; |
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186 | Arg = Arg->Common.Next; |
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187 | } |
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188 | |||
189 | return (Arg); |
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190 | } |
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191 | |||
192 | |||
193 | /******************************************************************************* |
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194 | * |
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195 | * FUNCTION: AcpiPsAppendArg |
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196 | * |
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197 | * PARAMETERS: Op - Append an argument to this Op. |
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198 | * Arg - Argument Op to append |
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199 | * |
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200 | * RETURN: None. |
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201 | * |
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202 | * DESCRIPTION: Append an argument to an op's argument list (a NULL arg is OK) |
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203 | * |
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204 | ******************************************************************************/ |
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205 | |||
206 | void |
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207 | AcpiPsAppendArg ( |
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208 | ACPI_PARSE_OBJECT *Op, |
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209 | ACPI_PARSE_OBJECT *Arg) |
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210 | { |
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211 | ACPI_PARSE_OBJECT *PrevArg; |
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212 | const ACPI_OPCODE_INFO *OpInfo; |
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213 | |||
214 | |||
215 | ACPI_FUNCTION_ENTRY (); |
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216 | |||
217 | |||
218 | if (!Op) |
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219 | { |
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220 | return; |
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221 | } |
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222 | |||
223 | /* Get the info structure for this opcode */ |
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224 | |||
225 | OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); |
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226 | if (OpInfo->Class == AML_CLASS_UNKNOWN) |
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227 | { |
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228 | /* Invalid opcode */ |
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229 | |||
230 | ACPI_ERROR ((AE_INFO, "Invalid AML Opcode: 0x%2.2X", |
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231 | Op->Common.AmlOpcode)); |
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232 | return; |
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233 | } |
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234 | |||
235 | /* Check if this opcode requires argument sub-objects */ |
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236 | |||
237 | if (!(OpInfo->Flags & AML_HAS_ARGS)) |
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238 | { |
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239 | /* Has no linked argument objects */ |
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240 | |||
241 | return; |
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242 | } |
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243 | |||
244 | /* Append the argument to the linked argument list */ |
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245 | |||
246 | if (Op->Common.Value.Arg) |
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247 | { |
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248 | /* Append to existing argument list */ |
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249 | |||
250 | PrevArg = Op->Common.Value.Arg; |
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251 | while (PrevArg->Common.Next) |
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252 | { |
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253 | PrevArg = PrevArg->Common.Next; |
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254 | } |
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255 | PrevArg->Common.Next = Arg; |
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256 | } |
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257 | else |
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258 | { |
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259 | /* No argument list, this will be the first argument */ |
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260 | |||
261 | Op->Common.Value.Arg = Arg; |
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262 | } |
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263 | |||
264 | /* Set the parent in this arg and any args linked after it */ |
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265 | |||
266 | while (Arg) |
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267 | { |
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268 | Arg->Common.Parent = Op; |
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269 | Arg = Arg->Common.Next; |
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270 | |||
271 | Op->Common.ArgListLength++; |
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272 | } |
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273 | } |
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274 | |||
275 | |||
276 | /******************************************************************************* |
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277 | * |
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278 | * FUNCTION: AcpiPsGetDepthNext |
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279 | * |
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280 | * PARAMETERS: Origin - Root of subtree to search |
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281 | * Op - Last (previous) Op that was found |
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282 | * |
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283 | * RETURN: Next Op found in the search. |
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284 | * |
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285 | * DESCRIPTION: Get next op in tree (walking the tree in depth-first order) |
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286 | * Return NULL when reaching "origin" or when walking up from root |
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287 | * |
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288 | ******************************************************************************/ |
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289 | |||
290 | ACPI_PARSE_OBJECT * |
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291 | AcpiPsGetDepthNext ( |
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292 | ACPI_PARSE_OBJECT *Origin, |
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293 | ACPI_PARSE_OBJECT *Op) |
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294 | { |
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295 | ACPI_PARSE_OBJECT *Next = NULL; |
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296 | ACPI_PARSE_OBJECT *Parent; |
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297 | ACPI_PARSE_OBJECT *Arg; |
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298 | |||
299 | |||
300 | ACPI_FUNCTION_ENTRY (); |
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301 | |||
302 | |||
303 | if (!Op) |
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304 | { |
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305 | return (NULL); |
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306 | } |
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307 | |||
308 | /* Look for an argument or child */ |
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309 | |||
310 | Next = AcpiPsGetArg (Op, 0); |
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311 | if (Next) |
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312 | { |
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313 | return (Next); |
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314 | } |
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315 | |||
316 | /* Look for a sibling */ |
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317 | |||
318 | Next = Op->Common.Next; |
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319 | if (Next) |
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320 | { |
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321 | return (Next); |
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322 | } |
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323 | |||
324 | /* Look for a sibling of parent */ |
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325 | |||
326 | Parent = Op->Common.Parent; |
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327 | |||
328 | while (Parent) |
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329 | { |
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330 | Arg = AcpiPsGetArg (Parent, 0); |
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331 | while (Arg && (Arg != Origin) && (Arg != Op)) |
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332 | { |
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333 | Arg = Arg->Common.Next; |
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334 | } |
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335 | |||
336 | if (Arg == Origin) |
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337 | { |
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338 | /* Reached parent of origin, end search */ |
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339 | |||
340 | return (NULL); |
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341 | } |
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342 | |||
343 | if (Parent->Common.Next) |
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344 | { |
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345 | /* Found sibling of parent */ |
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346 | |||
347 | return (Parent->Common.Next); |
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348 | } |
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349 | |||
350 | Op = Parent; |
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351 | Parent = Parent->Common.Parent; |
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352 | } |
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353 | |||
354 | return (Next); |
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355 | } |
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356 | |||
357 | |||
358 | #ifdef ACPI_OBSOLETE_FUNCTIONS |
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359 | /******************************************************************************* |
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360 | * |
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361 | * FUNCTION: AcpiPsGetChild |
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362 | * |
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363 | * PARAMETERS: Op - Get the child of this Op |
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364 | * |
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365 | * RETURN: Child Op, Null if none is found. |
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366 | * |
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367 | * DESCRIPTION: Get op's children or NULL if none |
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368 | * |
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369 | ******************************************************************************/ |
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370 | |||
371 | ACPI_PARSE_OBJECT * |
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372 | AcpiPsGetChild ( |
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373 | ACPI_PARSE_OBJECT *Op) |
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374 | { |
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375 | ACPI_PARSE_OBJECT *Child = NULL; |
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376 | |||
377 | |||
378 | ACPI_FUNCTION_ENTRY (); |
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379 | |||
380 | |||
381 | switch (Op->Common.AmlOpcode) |
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382 | { |
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383 | case AML_SCOPE_OP: |
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384 | case AML_ELSE_OP: |
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385 | case AML_DEVICE_OP: |
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386 | case AML_THERMAL_ZONE_OP: |
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387 | case AML_INT_METHODCALL_OP: |
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388 | |||
389 | Child = AcpiPsGetArg (Op, 0); |
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390 | break; |
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391 | |||
392 | |||
393 | case AML_BUFFER_OP: |
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394 | case AML_PACKAGE_OP: |
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395 | case AML_METHOD_OP: |
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396 | case AML_IF_OP: |
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397 | case AML_WHILE_OP: |
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398 | case AML_FIELD_OP: |
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399 | |||
400 | Child = AcpiPsGetArg (Op, 1); |
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401 | break; |
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402 | |||
403 | |||
404 | case AML_POWER_RES_OP: |
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405 | case AML_INDEX_FIELD_OP: |
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406 | |||
407 | Child = AcpiPsGetArg (Op, 2); |
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408 | break; |
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409 | |||
410 | |||
411 | case AML_PROCESSOR_OP: |
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412 | case AML_BANK_FIELD_OP: |
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413 | |||
414 | Child = AcpiPsGetArg (Op, 3); |
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415 | break; |
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416 | |||
417 | |||
418 | default: |
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419 | /* All others have no children */ |
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420 | break; |
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421 | } |
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422 | |||
423 | return (Child); |
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424 | } |
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425 | #endif |
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426 |