1 2 /****************************************************************************** 3 * 4 * Module Name: exoparg3 - AML execution - opcodes with 3 arguments 5 * $Revision: 1.36 $ 6 * 7 *****************************************************************************/ 8 9 /****************************************************************************** 10 * 11 * 1. Copyright Notice 12 * 13 * Some or all of this work - Copyright (c) 1999 - 2008, Intel Corp. 14 * All rights reserved. 15 * 16 * 2. License 17 * 18 * 2.1. This is your license from Intel Corp. under its intellectual property 19 * rights. You may have additional license terms from the party that provided 20 * you this software, covering your right to use that party's intellectual 21 * property rights. 22 * 23 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 24 * copy of the source code appearing in this file ("Covered Code") an 25 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 26 * base code distributed originally by Intel ("Original Intel Code") to copy, 27 * make derivatives, distribute, use and display any portion of the Covered 28 * Code in any form, with the right to sublicense such rights; and 29 * 30 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 31 * license (with the right to sublicense), under only those claims of Intel 32 * patents that are infringed by the Original Intel Code, to make, use, sell, 33 * offer to sell, and import the Covered Code and derivative works thereof 34 * solely to the minimum extent necessary to exercise the above copyright 35 * license, and in no event shall the patent license extend to any additions 36 * to or modifications of the Original Intel Code. No other license or right 37 * is granted directly or by implication, estoppel or otherwise; 38 * 39 * The above copyright and patent license is granted only if the following 40 * conditions are met: 41 * 42 * 3. Conditions 43 * 44 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 45 * Redistribution of source code of any substantial portion of the Covered 46 * Code or modification with rights to further distribute source must include 47 * the above Copyright Notice, the above License, this list of Conditions, 48 * and the following Disclaimer and Export Compliance provision. In addition, 49 * Licensee must cause all Covered Code to which Licensee contributes to 50 * contain a file documenting the changes Licensee made to create that Covered 51 * Code and the date of any change. Licensee must include in that file the 52 * documentation of any changes made by any predecessor Licensee. Licensee 53 * must include a prominent statement that the modification is derived, 54 * directly or indirectly, from Original Intel Code. 55 * 56 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 57 * Redistribution of source code of any substantial portion of the Covered 58 * Code or modification without rights to further distribute source must 59 * include the following Disclaimer and Export Compliance provision in the 60 * documentation and/or other materials provided with distribution. In 61 * addition, Licensee may not authorize further sublicense of source of any 62 * portion of the Covered Code, and must include terms to the effect that the 63 * license from Licensee to its licensee is limited to the intellectual 64 * property embodied in the software Licensee provides to its licensee, and 65 * not to intellectual property embodied in modifications its licensee may 66 * make. 67 * 68 * 3.3. Redistribution of Executable. Redistribution in executable form of any 69 * substantial portion of the Covered Code or modification must reproduce the 70 * above Copyright Notice, and the following Disclaimer and Export Compliance 71 * provision in the documentation and/or other materials provided with the 72 * distribution. 73 * 74 * 3.4. Intel retains all right, title, and interest in and to the Original 75 * Intel Code. 76 * 77 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 78 * Intel shall be used in advertising or otherwise to promote the sale, use or 79 * other dealings in products derived from or relating to the Covered Code 80 * without prior written authorization from Intel. 81 * 82 * 4. Disclaimer and Export Compliance 83 * 84 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 85 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 86 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 87 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 88 89 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 90 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 91 * PARTICULAR PURPOSE. 92 * 93 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 94 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 95 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 96 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 97 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 98 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 99 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 100 * LIMITED REMEDY. 101 * 102 * 4.3. Licensee shall not export, either directly or indirectly, any of this 103 * software or system incorporating such software without first obtaining any 104 * required license or other approval from the U. S. Department of Commerce or 105 * any other agency or department of the United States Government. In the 106 * event Licensee exports any such software from the United States or 107 * re-exports any such software from a foreign destination, Licensee shall 108 * ensure that the distribution and export/re-export of the software is in 109 * compliance with all laws, regulations, orders, or other restrictions of the 110 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 111 * any of its subsidiaries will export/re-export any technical data, process, 112 * software, or service, directly or indirectly, to any country for which the 113 * United States government or any agency thereof requires an export license, 114 * other governmental approval, or letter of assurance, without first obtaining 115 * such license, approval or letter. 116 * 117 *****************************************************************************/ 118 119 #define __EXOPARG3_C__ 120 121 #include "acpi.h" 122 #include "acinterp.h" 123 #include "acparser.h" 124 #include "amlcode.h" 125 126 127 #define _COMPONENT ACPI_EXECUTER 128 ACPI_MODULE_NAME ("exoparg3") 129 130 131 /*! 132 * Naming convention for AML interpreter execution routines. 133 * 134 * The routines that begin execution of AML opcodes are named with a common 135 * convention based upon the number of arguments, the number of target operands, 136 * and whether or not a value is returned: 137 * 138 * AcpiExOpcode_xA_yT_zR 139 * 140 * Where: 141 * 142 * xA - ARGUMENTS: The number of arguments (input operands) that are 143 * required for this opcode type (1 through 6 args). 144 * yT - TARGETS: The number of targets (output operands) that are required 145 * for this opcode type (0, 1, or 2 targets). 146 * zR - RETURN VALUE: Indicates whether this opcode type returns a value 147 * as the function return (0 or 1). 148 * 149 * The AcpiExOpcode* functions are called via the Dispatcher component with 150 * fully resolved operands. 151 !*/ 152 153 154 /******************************************************************************* 155 * 156 * FUNCTION: AcpiExOpcode_3A_0T_0R 157 * 158 * PARAMETERS: WalkState - Current walk state 159 * 160 * RETURN: Status 161 * 162 * DESCRIPTION: Execute Triadic operator (3 operands) 163 * 164 ******************************************************************************/ 165 166 ACPI_STATUS 167 AcpiExOpcode_3A_0T_0R ( 168 ACPI_WALK_STATE *WalkState) 169 { 170 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 171 ACPI_SIGNAL_FATAL_INFO *Fatal; 172 ACPI_STATUS Status = AE_OK; 173 174 175 ACPI_FUNCTION_TRACE_STR (ExOpcode_3A_0T_0R, 176 AcpiPsGetOpcodeName (WalkState->Opcode)); 177 178 179 switch (WalkState->Opcode) 180 { 181 case AML_FATAL_OP: /* Fatal (FatalType FatalCode FatalArg) */ 182 183 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, 184 "FatalOp: Type %X Code %X Arg %X <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n", 185 (UINT32) Operand[0]->Integer.Value, 186 (UINT32) Operand[1]->Integer.Value, 187 (UINT32) Operand[2]->Integer.Value)); 188 189 Fatal = ACPI_ALLOCATE (sizeof (ACPI_SIGNAL_FATAL_INFO)); 190 if (Fatal) 191 { 192 Fatal->Type = (UINT32) Operand[0]->Integer.Value; 193 Fatal->Code = (UINT32) Operand[1]->Integer.Value; 194 Fatal->Argument = (UINT32) Operand[2]->Integer.Value; 195 } 196 197 /* Always signal the OS! */ 198 199 Status = AcpiOsSignal (ACPI_SIGNAL_FATAL, Fatal); 200 201 /* Might return while OS is shutting down, just continue */ 202 203 ACPI_FREE (Fatal); 204 break; 205 206 207 default: 208 209 ACPI_ERROR ((AE_INFO, "Unknown AML opcode %X", 210 WalkState->Opcode)); 211 Status = AE_AML_BAD_OPCODE; 212 goto Cleanup; 213 } 214 215 216 Cleanup: 217 218 return_ACPI_STATUS (Status); 219 } 220 221 222 /******************************************************************************* 223 * 224 * FUNCTION: AcpiExOpcode_3A_1T_1R 225 * 226 * PARAMETERS: WalkState - Current walk state 227 * 228 * RETURN: Status 229 * 230 * DESCRIPTION: Execute Triadic operator (3 operands) 231 * 232 ******************************************************************************/ 233 234 ACPI_STATUS 235 AcpiExOpcode_3A_1T_1R ( 236 ACPI_WALK_STATE *WalkState) 237 { 238 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 239 ACPI_OPERAND_OBJECT *ReturnDesc = NULL; 240 char *Buffer = NULL; 241 ACPI_STATUS Status = AE_OK; 242 ACPI_INTEGER Index; 243 ACPI_SIZE Length; 244 245 246 ACPI_FUNCTION_TRACE_STR (ExOpcode_3A_1T_1R, 247 AcpiPsGetOpcodeName (WalkState->Opcode)); 248 249 250 switch (WalkState->Opcode) 251 { 252 case AML_MID_OP: /* Mid (Source[0], Index[1], Length[2], Result[3]) */ 253 254 /* 255 * Create the return object. The Source operand is guaranteed to be 256 * either a String or a Buffer, so just use its type. 257 */ 258 ReturnDesc = AcpiUtCreateInternalObject ( 259 ACPI_GET_OBJECT_TYPE (Operand[0])); 260 if (!ReturnDesc) 261 { 262 Status = AE_NO_MEMORY; 263 goto Cleanup; 264 } 265 266 /* Get the Integer values from the objects */ 267 268 Index = Operand[1]->Integer.Value; 269 Length = (ACPI_SIZE) Operand[2]->Integer.Value; 270 271 /* 272 * If the index is beyond the length of the String/Buffer, or if the 273 * requested length is zero, return a zero-length String/Buffer 274 */ 275 if (Index >= Operand[0]->String.Length) 276 { 277 Length = 0; 278 } 279 280 /* Truncate request if larger than the actual String/Buffer */ 281 282 else if ((Index + Length) > Operand[0]->String.Length) 283 { 284 Length = (ACPI_SIZE) Operand[0]->String.Length - 285 (ACPI_SIZE) Index; 286 } 287 288 /* Strings always have a sub-pointer, not so for buffers */ 289 290 switch (ACPI_GET_OBJECT_TYPE (Operand[0])) 291 { 292 case ACPI_TYPE_STRING: 293 294 /* Always allocate a new buffer for the String */ 295 296 Buffer = ACPI_ALLOCATE_ZEROED ((ACPI_SIZE) Length + 1); 297 if (!Buffer) 298 { 299 Status = AE_NO_MEMORY; 300 goto Cleanup; 301 } 302 break; 303 304 case ACPI_TYPE_BUFFER: 305 306 /* If the requested length is zero, don't allocate a buffer */ 307 308 if (Length > 0) 309 { 310 /* Allocate a new buffer for the Buffer */ 311 312 Buffer = ACPI_ALLOCATE_ZEROED (Length); 313 if (!Buffer) 314 { 315 Status = AE_NO_MEMORY; 316 goto Cleanup; 317 } 318 } 319 break; 320 321 default: /* Should not happen */ 322 323 Status = AE_AML_OPERAND_TYPE; 324 goto Cleanup; 325 } 326 327 if (Buffer) 328 { 329 /* We have a buffer, copy the portion requested */ 330 331 ACPI_MEMCPY (Buffer, Operand[0]->String.Pointer + Index, 332 Length); 333 } 334 335 /* Set the length of the new String/Buffer */ 336 337 ReturnDesc->String.Pointer = Buffer; 338 ReturnDesc->String.Length = (UINT32) Length; 339 340 /* Mark buffer initialized */ 341 342 ReturnDesc->Buffer.Flags |= AOPOBJ_DATA_VALID; 343 break; 344 345 346 default: 347 348 ACPI_ERROR ((AE_INFO, "Unknown AML opcode %X", 349 WalkState->Opcode)); 350 Status = AE_AML_BAD_OPCODE; 351 goto Cleanup; 352 } 353 354 /* Store the result in the target */ 355 356 Status = AcpiExStore (ReturnDesc, Operand[3], WalkState); 357 358 Cleanup: 359 360 /* Delete return object on error */ 361 362 if (ACPI_FAILURE (Status) || WalkState->ResultObj) 363 { 364 AcpiUtRemoveReference (ReturnDesc); 365 WalkState->ResultObj = NULL; 366 } 367 368 /* Set the return object and exit */ 369 370 else 371 { 372 WalkState->ResultObj = ReturnDesc; 373 } 374 return_ACPI_STATUS (Status); 375 } 376 377 378