1 /****************************************************************************** 2 * 3 * Module Name: exconcat - Concatenate-type AML operators 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2017, Intel Corp. 12 * All rights reserved. 13 * 14 * 2. License 15 * 16 * 2.1. This is your license from Intel Corp. under its intellectual property 17 * rights. You may have additional license terms from the party that provided 18 * you this software, covering your right to use that party's intellectual 19 * property rights. 20 * 21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 22 * copy of the source code appearing in this file ("Covered Code") an 23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 24 * base code distributed originally by Intel ("Original Intel Code") to copy, 25 * make derivatives, distribute, use and display any portion of the Covered 26 * Code in any form, with the right to sublicense such rights; and 27 * 28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 29 * license (with the right to sublicense), under only those claims of Intel 30 * patents that are infringed by the Original Intel Code, to make, use, sell, 31 * offer to sell, and import the Covered Code and derivative works thereof 32 * solely to the minimum extent necessary to exercise the above copyright 33 * license, and in no event shall the patent license extend to any additions 34 * to or modifications of the Original Intel Code. No other license or right 35 * is granted directly or by implication, estoppel or otherwise; 36 * 37 * The above copyright and patent license is granted only if the following 38 * conditions are met: 39 * 40 * 3. Conditions 41 * 42 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 43 * Redistribution of source code of any substantial portion of the Covered 44 * Code or modification with rights to further distribute source must include 45 * the above Copyright Notice, the above License, this list of Conditions, 46 * and the following Disclaimer and Export Compliance provision. In addition, 47 * Licensee must cause all Covered Code to which Licensee contributes to 48 * contain a file documenting the changes Licensee made to create that Covered 49 * Code and the date of any change. Licensee must include in that file the 50 * documentation of any changes made by any predecessor Licensee. Licensee 51 * must include a prominent statement that the modification is derived, 52 * directly or indirectly, from Original Intel Code. 53 * 54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 55 * Redistribution of source code of any substantial portion of the Covered 56 * Code or modification without rights to further distribute source must 57 * include the following Disclaimer and Export Compliance provision in the 58 * documentation and/or other materials provided with distribution. In 59 * addition, Licensee may not authorize further sublicense of source of any 60 * portion of the Covered Code, and must include terms to the effect that the 61 * license from Licensee to its licensee is limited to the intellectual 62 * property embodied in the software Licensee provides to its licensee, and 63 * not to intellectual property embodied in modifications its licensee may 64 * make. 65 * 66 * 3.3. Redistribution of Executable. Redistribution in executable form of any 67 * substantial portion of the Covered Code or modification must reproduce the 68 * above Copyright Notice, and the following Disclaimer and Export Compliance 69 * provision in the documentation and/or other materials provided with the 70 * distribution. 71 * 72 * 3.4. Intel retains all right, title, and interest in and to the Original 73 * Intel Code. 74 * 75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 76 * Intel shall be used in advertising or otherwise to promote the sale, use or 77 * other dealings in products derived from or relating to the Covered Code 78 * without prior written authorization from Intel. 79 * 80 * 4. Disclaimer and Export Compliance 81 * 82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 86 87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 89 * PARTICULAR PURPOSE. 90 * 91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 98 * LIMITED REMEDY. 99 * 100 * 4.3. Licensee shall not export, either directly or indirectly, any of this 101 * software or system incorporating such software without first obtaining any 102 * required license or other approval from the U. S. Department of Commerce or 103 * any other agency or department of the United States Government. In the 104 * event Licensee exports any such software from the United States or 105 * re-exports any such software from a foreign destination, Licensee shall 106 * ensure that the distribution and export/re-export of the software is in 107 * compliance with all laws, regulations, orders, or other restrictions of the 108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 109 * any of its subsidiaries will export/re-export any technical data, process, 110 * software, or service, directly or indirectly, to any country for which the 111 * United States government or any agency thereof requires an export license, 112 * other governmental approval, or letter of assurance, without first obtaining 113 * such license, approval or letter. 114 * 115 ***************************************************************************** 116 * 117 * Alternatively, you may choose to be licensed under the terms of the 118 * following license: 119 * 120 * Redistribution and use in source and binary forms, with or without 121 * modification, are permitted provided that the following conditions 122 * are met: 123 * 1. Redistributions of source code must retain the above copyright 124 * notice, this list of conditions, and the following disclaimer, 125 * without modification. 126 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 127 * substantially similar to the "NO WARRANTY" disclaimer below 128 * ("Disclaimer") and any redistribution must be conditioned upon 129 * including a substantially similar Disclaimer requirement for further 130 * binary redistribution. 131 * 3. Neither the names of the above-listed copyright holders nor the names 132 * of any contributors may be used to endorse or promote products derived 133 * from this software without specific prior written permission. 134 * 135 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 136 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 137 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 138 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 139 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 140 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 141 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 142 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 143 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 144 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 145 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 146 * 147 * Alternatively, you may choose to be licensed under the terms of the 148 * GNU General Public License ("GPL") version 2 as published by the Free 149 * Software Foundation. 150 * 151 *****************************************************************************/ 152 153 #include <contrib/dev/acpica/include/acpi.h> 154 #include <contrib/dev/acpica/include/accommon.h> 155 #include <contrib/dev/acpica/include/acinterp.h> 156 #include <contrib/dev/acpica/include/amlresrc.h> 157 158 159 #define _COMPONENT ACPI_EXECUTER 160 ACPI_MODULE_NAME ("exconcat") 161 162 /* Local Prototypes */ 163 164 static ACPI_STATUS 165 AcpiExConvertToObjectTypeString ( 166 ACPI_OPERAND_OBJECT *ObjDesc, 167 ACPI_OPERAND_OBJECT **ResultDesc); 168 169 170 /******************************************************************************* 171 * 172 * FUNCTION: AcpiExDoConcatenate 173 * 174 * PARAMETERS: Operand0 - First source object 175 * Operand1 - Second source object 176 * ActualReturnDesc - Where to place the return object 177 * WalkState - Current walk state 178 * 179 * RETURN: Status 180 * 181 * DESCRIPTION: Concatenate two objects with the ACPI-defined conversion 182 * rules as necessary. 183 * NOTE: 184 * Per the ACPI spec (up to 6.1), Concatenate only supports Integer, 185 * String, and Buffer objects. However, we support all objects here 186 * as an extension. This improves the usefulness of both Concatenate 187 * and the Printf/Fprintf macros. The extension returns a string 188 * describing the object type for the other objects. 189 * 02/2016. 190 * 191 ******************************************************************************/ 192 193 ACPI_STATUS 194 AcpiExDoConcatenate ( 195 ACPI_OPERAND_OBJECT *Operand0, 196 ACPI_OPERAND_OBJECT *Operand1, 197 ACPI_OPERAND_OBJECT **ActualReturnDesc, 198 ACPI_WALK_STATE *WalkState) 199 { 200 ACPI_OPERAND_OBJECT *LocalOperand0 = Operand0; 201 ACPI_OPERAND_OBJECT *LocalOperand1 = Operand1; 202 ACPI_OPERAND_OBJECT *TempOperand1 = NULL; 203 ACPI_OPERAND_OBJECT *ReturnDesc; 204 char *Buffer; 205 ACPI_OBJECT_TYPE Operand0Type; 206 ACPI_OBJECT_TYPE Operand1Type; 207 ACPI_STATUS Status; 208 209 210 ACPI_FUNCTION_TRACE (ExDoConcatenate); 211 212 213 /* Operand 0 preprocessing */ 214 215 switch (Operand0->Common.Type) 216 { 217 case ACPI_TYPE_INTEGER: 218 case ACPI_TYPE_STRING: 219 case ACPI_TYPE_BUFFER: 220 221 Operand0Type = Operand0->Common.Type; 222 break; 223 224 default: 225 226 /* For all other types, get the "object type" string */ 227 228 Status = AcpiExConvertToObjectTypeString ( 229 Operand0, &LocalOperand0); 230 if (ACPI_FAILURE (Status)) 231 { 232 goto Cleanup; 233 } 234 235 Operand0Type = ACPI_TYPE_STRING; 236 break; 237 } 238 239 /* Operand 1 preprocessing */ 240 241 switch (Operand1->Common.Type) 242 { 243 case ACPI_TYPE_INTEGER: 244 case ACPI_TYPE_STRING: 245 case ACPI_TYPE_BUFFER: 246 247 Operand1Type = Operand1->Common.Type; 248 break; 249 250 default: 251 252 /* For all other types, get the "object type" string */ 253 254 Status = AcpiExConvertToObjectTypeString ( 255 Operand1, &LocalOperand1); 256 if (ACPI_FAILURE (Status)) 257 { 258 goto Cleanup; 259 } 260 261 Operand1Type = ACPI_TYPE_STRING; 262 break; 263 } 264 265 /* 266 * Convert the second operand if necessary. The first operand (0) 267 * determines the type of the second operand (1) (See the Data Types 268 * section of the ACPI specification). Both object types are 269 * guaranteed to be either Integer/String/Buffer by the operand 270 * resolution mechanism. 271 */ 272 switch (Operand0Type) 273 { 274 case ACPI_TYPE_INTEGER: 275 276 Status = AcpiExConvertToInteger (LocalOperand1, &TempOperand1, 277 ACPI_STRTOUL_BASE16); 278 break; 279 280 case ACPI_TYPE_BUFFER: 281 282 Status = AcpiExConvertToBuffer (LocalOperand1, &TempOperand1); 283 break; 284 285 case ACPI_TYPE_STRING: 286 287 switch (Operand1Type) 288 { 289 case ACPI_TYPE_INTEGER: 290 case ACPI_TYPE_STRING: 291 case ACPI_TYPE_BUFFER: 292 293 /* Other types have already been converted to string */ 294 295 Status = AcpiExConvertToString ( 296 LocalOperand1, &TempOperand1, ACPI_IMPLICIT_CONVERT_HEX); 297 break; 298 299 default: 300 301 Status = AE_OK; 302 break; 303 } 304 break; 305 306 default: 307 308 ACPI_ERROR ((AE_INFO, "Invalid object type: 0x%X", 309 Operand0->Common.Type)); 310 Status = AE_AML_INTERNAL; 311 } 312 313 if (ACPI_FAILURE (Status)) 314 { 315 goto Cleanup; 316 } 317 318 /* Take care with any newly created operand objects */ 319 320 if ((LocalOperand1 != Operand1) && 321 (LocalOperand1 != TempOperand1)) 322 { 323 AcpiUtRemoveReference (LocalOperand1); 324 } 325 326 LocalOperand1 = TempOperand1; 327 328 /* 329 * Both operands are now known to be the same object type 330 * (Both are Integer, String, or Buffer), and we can now perform 331 * the concatenation. 332 * 333 * There are three cases to handle, as per the ACPI spec: 334 * 335 * 1) Two Integers concatenated to produce a new Buffer 336 * 2) Two Strings concatenated to produce a new String 337 * 3) Two Buffers concatenated to produce a new Buffer 338 */ 339 switch (Operand0Type) 340 { 341 case ACPI_TYPE_INTEGER: 342 343 /* Result of two Integers is a Buffer */ 344 /* Need enough buffer space for two integers */ 345 346 ReturnDesc = AcpiUtCreateBufferObject ( 347 (ACPI_SIZE) ACPI_MUL_2 (AcpiGbl_IntegerByteWidth)); 348 if (!ReturnDesc) 349 { 350 Status = AE_NO_MEMORY; 351 goto Cleanup; 352 } 353 354 Buffer = (char *) ReturnDesc->Buffer.Pointer; 355 356 /* Copy the first integer, LSB first */ 357 358 memcpy (Buffer, &Operand0->Integer.Value, 359 AcpiGbl_IntegerByteWidth); 360 361 /* Copy the second integer (LSB first) after the first */ 362 363 memcpy (Buffer + AcpiGbl_IntegerByteWidth, 364 &LocalOperand1->Integer.Value, AcpiGbl_IntegerByteWidth); 365 break; 366 367 case ACPI_TYPE_STRING: 368 369 /* Result of two Strings is a String */ 370 371 ReturnDesc = AcpiUtCreateStringObject ( 372 ((ACPI_SIZE) LocalOperand0->String.Length + 373 LocalOperand1->String.Length)); 374 if (!ReturnDesc) 375 { 376 Status = AE_NO_MEMORY; 377 goto Cleanup; 378 } 379 380 Buffer = ReturnDesc->String.Pointer; 381 382 /* Concatenate the strings */ 383 384 strcpy (Buffer, LocalOperand0->String.Pointer); 385 strcat (Buffer, LocalOperand1->String.Pointer); 386 break; 387 388 case ACPI_TYPE_BUFFER: 389 390 /* Result of two Buffers is a Buffer */ 391 392 ReturnDesc = AcpiUtCreateBufferObject ( 393 ((ACPI_SIZE) Operand0->Buffer.Length + 394 LocalOperand1->Buffer.Length)); 395 if (!ReturnDesc) 396 { 397 Status = AE_NO_MEMORY; 398 goto Cleanup; 399 } 400 401 Buffer = (char *) ReturnDesc->Buffer.Pointer; 402 403 /* Concatenate the buffers */ 404 405 memcpy (Buffer, Operand0->Buffer.Pointer, 406 Operand0->Buffer.Length); 407 memcpy (Buffer + Operand0->Buffer.Length, 408 LocalOperand1->Buffer.Pointer, 409 LocalOperand1->Buffer.Length); 410 break; 411 412 default: 413 414 /* Invalid object type, should not happen here */ 415 416 ACPI_ERROR ((AE_INFO, "Invalid object type: 0x%X", 417 Operand0->Common.Type)); 418 Status = AE_AML_INTERNAL; 419 goto Cleanup; 420 } 421 422 *ActualReturnDesc = ReturnDesc; 423 424 Cleanup: 425 if (LocalOperand0 != Operand0) 426 { 427 AcpiUtRemoveReference (LocalOperand0); 428 } 429 430 if (LocalOperand1 != Operand1) 431 { 432 AcpiUtRemoveReference (LocalOperand1); 433 } 434 435 return_ACPI_STATUS (Status); 436 } 437 438 439 /******************************************************************************* 440 * 441 * FUNCTION: AcpiExConvertToObjectTypeString 442 * 443 * PARAMETERS: ObjDesc - Object to be converted 444 * ReturnDesc - Where to place the return object 445 * 446 * RETURN: Status 447 * 448 * DESCRIPTION: Convert an object of arbitrary type to a string object that 449 * contains the namestring for the object. Used for the 450 * concatenate operator. 451 * 452 ******************************************************************************/ 453 454 static ACPI_STATUS 455 AcpiExConvertToObjectTypeString ( 456 ACPI_OPERAND_OBJECT *ObjDesc, 457 ACPI_OPERAND_OBJECT **ResultDesc) 458 { 459 ACPI_OPERAND_OBJECT *ReturnDesc; 460 const char *TypeString; 461 462 463 TypeString = AcpiUtGetTypeName (ObjDesc->Common.Type); 464 465 ReturnDesc = AcpiUtCreateStringObject ( 466 ((ACPI_SIZE) strlen (TypeString) + 9)); /* 9 For "[ Object]" */ 467 if (!ReturnDesc) 468 { 469 return (AE_NO_MEMORY); 470 } 471 472 strcpy (ReturnDesc->String.Pointer, "["); 473 strcat (ReturnDesc->String.Pointer, TypeString); 474 strcat (ReturnDesc->String.Pointer, " Object]"); 475 476 *ResultDesc = ReturnDesc; 477 return (AE_OK); 478 } 479 480 481 /******************************************************************************* 482 * 483 * FUNCTION: AcpiExConcatTemplate 484 * 485 * PARAMETERS: Operand0 - First source object 486 * Operand1 - Second source object 487 * ActualReturnDesc - Where to place the return object 488 * WalkState - Current walk state 489 * 490 * RETURN: Status 491 * 492 * DESCRIPTION: Concatenate two resource templates 493 * 494 ******************************************************************************/ 495 496 ACPI_STATUS 497 AcpiExConcatTemplate ( 498 ACPI_OPERAND_OBJECT *Operand0, 499 ACPI_OPERAND_OBJECT *Operand1, 500 ACPI_OPERAND_OBJECT **ActualReturnDesc, 501 ACPI_WALK_STATE *WalkState) 502 { 503 ACPI_STATUS Status; 504 ACPI_OPERAND_OBJECT *ReturnDesc; 505 UINT8 *NewBuf; 506 UINT8 *EndTag; 507 ACPI_SIZE Length0; 508 ACPI_SIZE Length1; 509 ACPI_SIZE NewLength; 510 511 512 ACPI_FUNCTION_TRACE (ExConcatTemplate); 513 514 515 /* 516 * Find the EndTag descriptor in each resource template. 517 * Note1: returned pointers point TO the EndTag, not past it. 518 * Note2: zero-length buffers are allowed; treated like one EndTag 519 */ 520 521 /* Get the length of the first resource template */ 522 523 Status = AcpiUtGetResourceEndTag (Operand0, &EndTag); 524 if (ACPI_FAILURE (Status)) 525 { 526 return_ACPI_STATUS (Status); 527 } 528 529 Length0 = ACPI_PTR_DIFF (EndTag, Operand0->Buffer.Pointer); 530 531 /* Get the length of the second resource template */ 532 533 Status = AcpiUtGetResourceEndTag (Operand1, &EndTag); 534 if (ACPI_FAILURE (Status)) 535 { 536 return_ACPI_STATUS (Status); 537 } 538 539 Length1 = ACPI_PTR_DIFF (EndTag, Operand1->Buffer.Pointer); 540 541 /* Combine both lengths, minimum size will be 2 for EndTag */ 542 543 NewLength = Length0 + Length1 + sizeof (AML_RESOURCE_END_TAG); 544 545 /* Create a new buffer object for the result (with one EndTag) */ 546 547 ReturnDesc = AcpiUtCreateBufferObject (NewLength); 548 if (!ReturnDesc) 549 { 550 return_ACPI_STATUS (AE_NO_MEMORY); 551 } 552 553 /* 554 * Copy the templates to the new buffer, 0 first, then 1 follows. One 555 * EndTag descriptor is copied from Operand1. 556 */ 557 NewBuf = ReturnDesc->Buffer.Pointer; 558 memcpy (NewBuf, Operand0->Buffer.Pointer, Length0); 559 memcpy (NewBuf + Length0, Operand1->Buffer.Pointer, Length1); 560 561 /* Insert EndTag and set the checksum to zero, means "ignore checksum" */ 562 563 NewBuf[NewLength - 1] = 0; 564 NewBuf[NewLength - 2] = ACPI_RESOURCE_NAME_END_TAG | 1; 565 566 /* Return the completed resource template */ 567 568 *ActualReturnDesc = ReturnDesc; 569 return_ACPI_STATUS (AE_OK); 570 } 571