1 /****************************************************************************** 2 * 3 * Module Name: aeexception - Exception and signal handlers 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2025, 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 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 88 * PARTICULAR PURPOSE. 89 * 90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 97 * LIMITED REMEDY. 98 * 99 * 4.3. Licensee shall not export, either directly or indirectly, any of this 100 * software or system incorporating such software without first obtaining any 101 * required license or other approval from the U. S. Department of Commerce or 102 * any other agency or department of the United States Government. In the 103 * event Licensee exports any such software from the United States or 104 * re-exports any such software from a foreign destination, Licensee shall 105 * ensure that the distribution and export/re-export of the software is in 106 * compliance with all laws, regulations, orders, or other restrictions of the 107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 108 * any of its subsidiaries will export/re-export any technical data, process, 109 * software, or service, directly or indirectly, to any country for which the 110 * United States government or any agency thereof requires an export license, 111 * other governmental approval, or letter of assurance, without first obtaining 112 * such license, approval or letter. 113 * 114 ***************************************************************************** 115 * 116 * Alternatively, you may choose to be licensed under the terms of the 117 * following license: 118 * 119 * Redistribution and use in source and binary forms, with or without 120 * modification, are permitted provided that the following conditions 121 * are met: 122 * 1. Redistributions of source code must retain the above copyright 123 * notice, this list of conditions, and the following disclaimer, 124 * without modification. 125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 126 * substantially similar to the "NO WARRANTY" disclaimer below 127 * ("Disclaimer") and any redistribution must be conditioned upon 128 * including a substantially similar Disclaimer requirement for further 129 * binary redistribution. 130 * 3. Neither the names of the above-listed copyright holders nor the names 131 * of any contributors may be used to endorse or promote products derived 132 * from this software without specific prior written permission. 133 * 134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 145 * 146 * Alternatively, you may choose to be licensed under the terms of the 147 * GNU General Public License ("GPL") version 2 as published by the Free 148 * Software Foundation. 149 * 150 *****************************************************************************/ 151 152 #include "aecommon.h" 153 154 #define _COMPONENT ACPI_TOOLS 155 ACPI_MODULE_NAME ("aeexception") 156 157 158 /* Local prototypes */ 159 160 static void 161 AeDisplayMethodCallStack ( 162 void); 163 164 165 UINT32 SigintCount = 0; 166 #define ACPI_MAX_CONTROL_C 5 167 168 169 /****************************************************************************** 170 * 171 * FUNCTION: AeExceptionHandler 172 * 173 * PARAMETERS: Standard exception handler parameters 174 * 175 * RETURN: Status 176 * 177 * DESCRIPTION: System exception handler for AcpiExec utility. Called from 178 * the core ACPICA code after any exception during method 179 * execution. 180 * 181 *****************************************************************************/ 182 183 ACPI_STATUS 184 AeExceptionHandler ( 185 ACPI_STATUS AmlStatus, 186 ACPI_NAME Name, 187 UINT16 Opcode, 188 UINT32 AmlOffset, 189 void *Context) 190 { 191 ACPI_STATUS NewAmlStatus = AmlStatus; 192 ACPI_STATUS Status; 193 ACPI_BUFFER ReturnObj; 194 ACPI_OBJECT_LIST ArgList; 195 ACPI_OBJECT Arg[3]; 196 const char *Exception; 197 ACPI_HANDLE ErrHandle; 198 199 200 Exception = AcpiFormatException (AmlStatus); 201 202 if (AcpiGbl_VerboseHandlers) 203 { 204 AcpiOsPrintf (AE_PREFIX 205 "Exception %s during execution\n", Exception); 206 207 if (Name) 208 { 209 if (ACPI_COMPARE_NAMESEG (&Name, ACPI_ROOT_PATHNAME)) 210 { 211 AcpiOsPrintf (AE_PREFIX 212 "Evaluating executable code at [%s]\n", ACPI_NAMESPACE_ROOT); 213 } 214 else 215 { 216 AcpiOsPrintf (AE_PREFIX 217 "Evaluating Method or Node: [%4.4s]\n", (char *) &Name); 218 } 219 } 220 221 /* Be terse about loop timeouts */ 222 223 if ((AmlStatus == AE_AML_LOOP_TIMEOUT) && AcpiGbl_AbortLoopOnTimeout) 224 { 225 AcpiOsPrintf (AE_PREFIX "Aborting loop after timeout\n"); 226 return (AE_OK); 227 } 228 229 AcpiOsPrintf ("\n" AE_PREFIX 230 "AML Opcode [%s], Method Offset ~%5.5X\n", 231 AcpiPsGetOpcodeName (Opcode), AmlOffset); 232 } 233 234 /* Invoke the _ERR method if present */ 235 236 Status = AcpiGetHandle (NULL, "\\_ERR", &ErrHandle); 237 if (ACPI_FAILURE (Status)) 238 { 239 goto Cleanup; 240 } 241 242 /* Setup parameter object */ 243 244 ArgList.Count = 3; 245 ArgList.Pointer = Arg; 246 247 Arg[0].Type = ACPI_TYPE_INTEGER; 248 Arg[0].Integer.Value = AmlStatus; 249 250 Arg[1].Type = ACPI_TYPE_STRING; 251 Arg[1].String.Pointer = ACPI_CAST_PTR (char, Exception); 252 Arg[1].String.Length = strlen (Exception); 253 254 Arg[2].Type = ACPI_TYPE_INTEGER; 255 Arg[2].Integer.Value = AcpiOsGetThreadId(); 256 257 /* Setup return buffer */ 258 259 ReturnObj.Pointer = NULL; 260 ReturnObj.Length = ACPI_ALLOCATE_BUFFER; 261 262 Status = AcpiEvaluateObject (ErrHandle, NULL, &ArgList, &ReturnObj); 263 if (ACPI_SUCCESS (Status)) 264 { 265 if (ReturnObj.Pointer) 266 { 267 /* Override original status */ 268 269 NewAmlStatus = (ACPI_STATUS) 270 ((ACPI_OBJECT *) ReturnObj.Pointer)->Integer.Value; 271 272 /* Free a buffer created via ACPI_ALLOCATE_BUFFER */ 273 274 AcpiOsFree (ReturnObj.Pointer); 275 } 276 } 277 else if (Status != AE_NOT_FOUND) 278 { 279 AcpiOsPrintf (AE_PREFIX 280 "Could not execute _ERR method, %s\n", 281 AcpiFormatException (Status)); 282 } 283 284 Cleanup: 285 286 if (AcpiGbl_IgnoreErrors) 287 { 288 /* Global option to ignore all method errors, just return OK */ 289 290 NewAmlStatus = AE_OK; 291 } 292 if (NewAmlStatus != AmlStatus) 293 { 294 /* Request to override actual status with a different status */ 295 296 AcpiOsPrintf (AE_PREFIX 297 "Exception override, new status %s\n\n", 298 AcpiFormatException (NewAmlStatus)); 299 } 300 301 return (NewAmlStatus); 302 } 303 304 305 /****************************************************************************** 306 * 307 * FUNCTION: AeSignalHandler 308 * 309 * PARAMETERS: Sig 310 * 311 * RETURN: none 312 * 313 * DESCRIPTION: Master signal handler. Currently handles SIGINT (ctrl-c), 314 * and SIGSEGV (Segment violation). 315 * 316 *****************************************************************************/ 317 318 void ACPI_SYSTEM_XFACE 319 AeSignalHandler ( 320 int Sig) 321 { 322 323 fflush(stdout); 324 AcpiOsPrintf ("\n" AE_PREFIX); 325 326 switch (Sig) 327 { 328 case SIGINT: 329 signal(Sig, SIG_IGN); 330 AcpiOsPrintf ("<Control-C>\n"); 331 332 /* Force exit on multiple control-c */ 333 334 SigintCount++; 335 if (SigintCount >= ACPI_MAX_CONTROL_C) 336 { 337 _exit (0); 338 } 339 340 /* Abort the application if there are no methods executing */ 341 342 if (!AcpiGbl_MethodExecuting) 343 { 344 break; 345 } 346 347 /* 348 * Abort the method(s). This will also dump the method call 349 * stack so there is no need to do it here. The application 350 * will then drop back into the debugger interface. 351 */ 352 AcpiGbl_AbortMethod = TRUE; 353 AcpiOsPrintf (AE_PREFIX "Control Method Call Stack:\n"); 354 signal (SIGINT, AeSignalHandler); 355 return; 356 357 case SIGSEGV: 358 AcpiOsPrintf ("Segmentation Fault\n"); 359 AeDisplayMethodCallStack (); 360 break; 361 362 default: 363 AcpiOsPrintf ("Unknown Signal, %X\n", Sig); 364 break; 365 } 366 367 /* Terminate application -- cleanup then exit */ 368 369 AcpiOsPrintf (AE_PREFIX "Terminating\n"); 370 (void) AcpiOsTerminate (); 371 _exit (0); 372 } 373 374 375 /****************************************************************************** 376 * 377 * FUNCTION: AeDisplayMethodCallStack 378 * 379 * PARAMETERS: None 380 * 381 * RETURN: None 382 * 383 * DESCRIPTION: Display current method call stack, if possible. 384 * 385 * NOTE: Currently only called from a SIGSEGV, so AcpiExec is about 386 * to terminate. 387 * 388 *****************************************************************************/ 389 390 static void 391 AeDisplayMethodCallStack ( 392 void) 393 { 394 ACPI_WALK_STATE *WalkState; 395 ACPI_THREAD_STATE *ThreadList = AcpiGbl_CurrentWalkList; 396 char *FullPathname = NULL; 397 398 399 if (!AcpiGbl_MethodExecuting) 400 { 401 AcpiOsPrintf (AE_PREFIX "No method is executing\n"); 402 return; 403 } 404 405 /* 406 * Try to find the currently executing control method(s) 407 * 408 * Note: The following code may fault if the data structures are 409 * in an indeterminate state when the interrupt occurs. However, 410 * in practice, this works quite well and can provide very 411 * valuable information. 412 * 413 * 1) Walk the global thread list 414 */ 415 while (ThreadList && 416 (ThreadList->DescriptorType == ACPI_DESC_TYPE_STATE_THREAD)) 417 { 418 /* 2) Walk the walk state list for this thread */ 419 420 WalkState = ThreadList->WalkStateList; 421 while (WalkState && 422 (WalkState->DescriptorType == ACPI_DESC_TYPE_WALK)) 423 { 424 /* An executing control method */ 425 426 if (WalkState->MethodNode) 427 { 428 FullPathname = AcpiNsGetExternalPathname ( 429 WalkState->MethodNode); 430 431 AcpiOsPrintf (AE_PREFIX 432 "Executing Method: %s\n", FullPathname); 433 } 434 435 /* Execution of a deferred opcode/node */ 436 437 if (WalkState->DeferredNode) 438 { 439 FullPathname = AcpiNsGetExternalPathname ( 440 WalkState->DeferredNode); 441 442 AcpiOsPrintf (AE_PREFIX 443 "Evaluating deferred node: %s\n", FullPathname); 444 } 445 446 /* Get the currently executing AML opcode */ 447 448 if ((WalkState->Opcode != AML_INT_METHODCALL_OP) && 449 FullPathname) 450 { 451 AcpiOsPrintf (AE_PREFIX 452 "Current AML Opcode in %s: [%s]-0x%4.4X at %p\n", 453 FullPathname, AcpiPsGetOpcodeName (WalkState->Opcode), 454 WalkState->Opcode, WalkState->Aml); 455 } 456 457 if (FullPathname) 458 { 459 ACPI_FREE (FullPathname); 460 FullPathname = NULL; 461 } 462 463 WalkState = WalkState->Next; 464 } 465 466 ThreadList = ThreadList->Next; 467 } 468 } 469
Indexes created Tue Sep 23 20:09:58 GMT 2025