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Warning, cross-references for /kernel/drivers/acpica/exoparg3.c need to be fixed.
0001 0002 /****************************************************************************** 0003 * 0004 * Module Name: exoparg3 - AML execution - opcodes with 3 arguments 0005 * 0006 *****************************************************************************/ 0007 0008 /****************************************************************************** 0009 * 0010 * 1. Copyright Notice 0011 * 0012 * Some or all of this work - Copyright (c) 1999 - 2009, Intel Corp. 0013 * All rights reserved. 0014 * 0015 * 2. License 0016 * 0017 * 2.1. This is your license from Intel Corp. under its intellectual property 0018 * rights. You may have additional license terms from the party that provided 0019 * you this software, covering your right to use that party's intellectual 0020 * property rights. 0021 * 0022 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 0023 * copy of the source code appearing in this file ("Covered Code") an 0024 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 0025 * base code distributed originally by Intel ("Original Intel Code") to copy, 0026 * make derivatives, distribute, use and display any portion of the Covered 0027 * Code in any form, with the right to sublicense such rights; and 0028 * 0029 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 0030 * license (with the right to sublicense), under only those claims of Intel 0031 * patents that are infringed by the Original Intel Code, to make, use, sell, 0032 * offer to sell, and import the Covered Code and derivative works thereof 0033 * solely to the minimum extent necessary to exercise the above copyright 0034 * license, and in no event shall the patent license extend to any additions 0035 * to or modifications of the Original Intel Code. No other license or right 0036 * is granted directly or by implication, estoppel or otherwise; 0037 * 0038 * The above copyright and patent license is granted only if the following 0039 * conditions are met: 0040 * 0041 * 3. Conditions 0042 * 0043 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 0044 * Redistribution of source code of any substantial portion of the Covered 0045 * Code or modification with rights to further distribute source must include 0046 * the above Copyright Notice, the above License, this list of Conditions, 0047 * and the following Disclaimer and Export Compliance provision. In addition, 0048 * Licensee must cause all Covered Code to which Licensee contributes to 0049 * contain a file documenting the changes Licensee made to create that Covered 0050 * Code and the date of any change. Licensee must include in that file the 0051 * documentation of any changes made by any predecessor Licensee. Licensee 0052 * must include a prominent statement that the modification is derived, 0053 * directly or indirectly, from Original Intel Code. 0054 * 0055 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 0056 * Redistribution of source code of any substantial portion of the Covered 0057 * Code or modification without rights to further distribute source must 0058 * include the following Disclaimer and Export Compliance provision in the 0059 * documentation and/or other materials provided with distribution. In 0060 * addition, Licensee may not authorize further sublicense of source of any 0061 * portion of the Covered Code, and must include terms to the effect that the 0062 * license from Licensee to its licensee is limited to the intellectual 0063 * property embodied in the software Licensee provides to its licensee, and 0064 * not to intellectual property embodied in modifications its licensee may 0065 * make. 0066 * 0067 * 3.3. Redistribution of Executable. Redistribution in executable form of any 0068 * substantial portion of the Covered Code or modification must reproduce the 0069 * above Copyright Notice, and the following Disclaimer and Export Compliance 0070 * provision in the documentation and/or other materials provided with the 0071 * distribution. 0072 * 0073 * 3.4. Intel retains all right, title, and interest in and to the Original 0074 * Intel Code. 0075 * 0076 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 0077 * Intel shall be used in advertising or otherwise to promote the sale, use or 0078 * other dealings in products derived from or relating to the Covered Code 0079 * without prior written authorization from Intel. 0080 * 0081 * 4. Disclaimer and Export Compliance 0082 * 0083 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 0084 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 0085 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 0086 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 0087 0088 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 0089 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 0090 * PARTICULAR PURPOSE. 0091 * 0092 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 0093 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 0094 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 0095 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 0096 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 0097 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 0098 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 0099 * LIMITED REMEDY. 0100 * 0101 * 4.3. Licensee shall not export, either directly or indirectly, any of this 0102 * software or system incorporating such software without first obtaining any 0103 * required license or other approval from the U. S. Department of Commerce or 0104 * any other agency or department of the United States Government. In the 0105 * event Licensee exports any such software from the United States or 0106 * re-exports any such software from a foreign destination, Licensee shall 0107 * ensure that the distribution and export/re-export of the software is in 0108 * compliance with all laws, regulations, orders, or other restrictions of the 0109 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 0110 * any of its subsidiaries will export/re-export any technical data, process, 0111 * software, or service, directly or indirectly, to any country for which the 0112 * United States government or any agency thereof requires an export license, 0113 * other governmental approval, or letter of assurance, without first obtaining 0114 * such license, approval or letter. 0115 * 0116 *****************************************************************************/ 0117 0118 #define __EXOPARG3_C__ 0119 0120 #include "acpi.h" 0121 #include "accommon.h" 0122 #include "acinterp.h" 0123 #include "acparser.h" 0124 #include "amlcode.h" 0125 0126 0127 #define _COMPONENT ACPI_EXECUTER 0128 ACPI_MODULE_NAME ("exoparg3") 0129 0130 0131 /*! 0132 * Naming convention for AML interpreter execution routines. 0133 * 0134 * The routines that begin execution of AML opcodes are named with a common 0135 * convention based upon the number of arguments, the number of target operands, 0136 * and whether or not a value is returned: 0137 * 0138 * AcpiExOpcode_xA_yT_zR 0139 * 0140 * Where: 0141 * 0142 * xA - ARGUMENTS: The number of arguments (input operands) that are 0143 * required for this opcode type (1 through 6 args). 0144 * yT - TARGETS: The number of targets (output operands) that are required 0145 * for this opcode type (0, 1, or 2 targets). 0146 * zR - RETURN VALUE: Indicates whether this opcode type returns a value 0147 * as the function return (0 or 1). 0148 * 0149 * The AcpiExOpcode* functions are called via the Dispatcher component with 0150 * fully resolved operands. 0151 !*/ 0152 0153 0154 /******************************************************************************* 0155 * 0156 * FUNCTION: AcpiExOpcode_3A_0T_0R 0157 * 0158 * PARAMETERS: WalkState - Current walk state 0159 * 0160 * RETURN: Status 0161 * 0162 * DESCRIPTION: Execute Triadic operator (3 operands) 0163 * 0164 ******************************************************************************/ 0165 0166 ACPI_STATUS 0167 AcpiExOpcode_3A_0T_0R ( 0168 ACPI_WALK_STATE *WalkState) 0169 { 0170 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 0171 ACPI_SIGNAL_FATAL_INFO *Fatal; 0172 ACPI_STATUS Status = AE_OK; 0173 0174 0175 ACPI_FUNCTION_TRACE_STR (ExOpcode_3A_0T_0R, 0176 AcpiPsGetOpcodeName (WalkState->Opcode)); 0177 0178 0179 switch (WalkState->Opcode) 0180 { 0181 case AML_FATAL_OP: /* Fatal (FatalType FatalCode FatalArg) */ 0182 0183 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 0184 "FatalOp: Type %X Code %X Arg %X <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n", 0185 (UINT32) Operand[0]->Integer.Value, 0186 (UINT32) Operand[1]->Integer.Value, 0187 (UINT32) Operand[2]->Integer.Value)); 0188 0189 Fatal = ACPI_ALLOCATE (sizeof (ACPI_SIGNAL_FATAL_INFO)); 0190 if (Fatal) 0191 { 0192 Fatal->Type = (UINT32) Operand[0]->Integer.Value; 0193 Fatal->Code = (UINT32) Operand[1]->Integer.Value; 0194 Fatal->Argument = (UINT32) Operand[2]->Integer.Value; 0195 } 0196 0197 /* Always signal the OS! */ 0198 0199 Status = AcpiOsSignal (ACPI_SIGNAL_FATAL, Fatal); 0200 0201 /* Might return while OS is shutting down, just continue */ 0202 0203 ACPI_FREE (Fatal); 0204 break; 0205 0206 0207 default: 0208 0209 ACPI_ERROR ((AE_INFO, "Unknown AML opcode %X", 0210 WalkState->Opcode)); 0211 Status = AE_AML_BAD_OPCODE; 0212 goto Cleanup; 0213 } 0214 0215 0216 Cleanup: 0217 0218 return_ACPI_STATUS (Status); 0219 } 0220 0221 0222 /******************************************************************************* 0223 * 0224 * FUNCTION: AcpiExOpcode_3A_1T_1R 0225 * 0226 * PARAMETERS: WalkState - Current walk state 0227 * 0228 * RETURN: Status 0229 * 0230 * DESCRIPTION: Execute Triadic operator (3 operands) 0231 * 0232 ******************************************************************************/ 0233 0234 ACPI_STATUS 0235 AcpiExOpcode_3A_1T_1R ( 0236 ACPI_WALK_STATE *WalkState) 0237 { 0238 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 0239 ACPI_OPERAND_OBJECT *ReturnDesc = NULL; 0240 char *Buffer = NULL; 0241 ACPI_STATUS Status = AE_OK; 0242 ACPI_INTEGER Index; 0243 ACPI_SIZE Length; 0244 0245 0246 ACPI_FUNCTION_TRACE_STR (ExOpcode_3A_1T_1R, 0247 AcpiPsGetOpcodeName (WalkState->Opcode)); 0248 0249 0250 switch (WalkState->Opcode) 0251 { 0252 case AML_MID_OP: /* Mid (Source[0], Index[1], Length[2], Result[3]) */ 0253 0254 /* 0255 * Create the return object. The Source operand is guaranteed to be 0256 * either a String or a Buffer, so just use its type. 0257 */ 0258 ReturnDesc = AcpiUtCreateInternalObject ( 0259 (Operand[0])->Common.Type); 0260 if (!ReturnDesc) 0261 { 0262 Status = AE_NO_MEMORY; 0263 goto Cleanup; 0264 } 0265 0266 /* Get the Integer values from the objects */ 0267 0268 Index = Operand[1]->Integer.Value; 0269 Length = (ACPI_SIZE) Operand[2]->Integer.Value; 0270 0271 /* 0272 * If the index is beyond the length of the String/Buffer, or if the 0273 * requested length is zero, return a zero-length String/Buffer 0274 */ 0275 if (Index >= Operand[0]->String.Length) 0276 { 0277 Length = 0; 0278 } 0279 0280 /* Truncate request if larger than the actual String/Buffer */ 0281 0282 else if ((Index + Length) > Operand[0]->String.Length) 0283 { 0284 Length = (ACPI_SIZE) Operand[0]->String.Length - 0285 (ACPI_SIZE) Index; 0286 } 0287 0288 /* Strings always have a sub-pointer, not so for buffers */ 0289 0290 switch ((Operand[0])->Common.Type) 0291 { 0292 case ACPI_TYPE_STRING: 0293 0294 /* Always allocate a new buffer for the String */ 0295 0296 Buffer = ACPI_ALLOCATE_ZEROED ((ACPI_SIZE) Length + 1); 0297 if (!Buffer) 0298 { 0299 Status = AE_NO_MEMORY; 0300 goto Cleanup; 0301 } 0302 break; 0303 0304 case ACPI_TYPE_BUFFER: 0305 0306 /* If the requested length is zero, don't allocate a buffer */ 0307 0308 if (Length > 0) 0309 { 0310 /* Allocate a new buffer for the Buffer */ 0311 0312 Buffer = ACPI_ALLOCATE_ZEROED (Length); 0313 if (!Buffer) 0314 { 0315 Status = AE_NO_MEMORY; 0316 goto Cleanup; 0317 } 0318 } 0319 break; 0320 0321 default: /* Should not happen */ 0322 0323 Status = AE_AML_OPERAND_TYPE; 0324 goto Cleanup; 0325 } 0326 0327 if (Buffer) 0328 { 0329 /* We have a buffer, copy the portion requested */ 0330 0331 ACPI_MEMCPY (Buffer, Operand[0]->String.Pointer + Index, 0332 Length); 0333 } 0334 0335 /* Set the length of the new String/Buffer */ 0336 0337 ReturnDesc->String.Pointer = Buffer; 0338 ReturnDesc->String.Length = (UINT32) Length; 0339 0340 /* Mark buffer initialized */ 0341 0342 ReturnDesc->Buffer.Flags |= AOPOBJ_DATA_VALID; 0343 break; 0344 0345 0346 default: 0347 0348 ACPI_ERROR ((AE_INFO, "Unknown AML opcode %X", 0349 WalkState->Opcode)); 0350 Status = AE_AML_BAD_OPCODE; 0351 goto Cleanup; 0352 } 0353 0354 /* Store the result in the target */ 0355 0356 Status = AcpiExStore (ReturnDesc, Operand[3], WalkState); 0357 0358 Cleanup: 0359 0360 /* Delete return object on error */ 0361 0362 if (ACPI_FAILURE (Status) || WalkState->ResultObj) 0363 { 0364 AcpiUtRemoveReference (ReturnDesc); 0365 WalkState->ResultObj = NULL; 0366 } 0367 0368 /* Set the return object and exit */ 0369 0370 else 0371 { 0372 WalkState->ResultObj = ReturnDesc; 0373 } 0374 return_ACPI_STATUS (Status); 0375 } 0376 0377
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