1 /******************************************************************************* 2 * 3 * Module Name: dmnames - AML disassembler, names, namestrings, pathnames 4 * 5 ******************************************************************************/ 6 7 /* 8 * Copyright (C) 2000 - 2015, Intel Corp. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions, and the following disclaimer, 16 * without modification. 17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 * substantially similar to the "NO WARRANTY" disclaimer below 19 * ("Disclaimer") and any redistribution must be conditioned upon 20 * including a substantially similar Disclaimer requirement for further 21 * binary redistribution. 22 * 3. Neither the names of the above-listed copyright holders nor the names 23 * of any contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * Alternatively, this software may be distributed under the terms of the 27 * GNU General Public License ("GPL") version 2 as published by the Free 28 * Software Foundation. 29 * 30 * NO WARRANTY 31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 * POSSIBILITY OF SUCH DAMAGES. 42 */ 43 44 #include <contrib/dev/acpica/include/acpi.h> 45 #include <contrib/dev/acpica/include/accommon.h> 46 #include <contrib/dev/acpica/include/amlcode.h> 47 #include <contrib/dev/acpica/include/acnamesp.h> 48 #include <contrib/dev/acpica/include/acdisasm.h> 49 50 51 #ifdef ACPI_DISASSEMBLER 52 53 #define _COMPONENT ACPI_CA_DEBUGGER 54 ACPI_MODULE_NAME ("dmnames") 55 56 /* Local prototypes */ 57 58 #ifdef ACPI_OBSOLETE_FUNCTIONS 59 void 60 AcpiDmDisplayPath ( 61 ACPI_PARSE_OBJECT *Op); 62 #endif 63 64 65 /******************************************************************************* 66 * 67 * FUNCTION: AcpiDmDumpName 68 * 69 * PARAMETERS: Name - 4 character ACPI name 70 * 71 * RETURN: Final length of name 72 * 73 * DESCRIPTION: Dump an ACPI name, minus any trailing underscores. 74 * 75 ******************************************************************************/ 76 77 UINT32 78 AcpiDmDumpName ( 79 UINT32 Name) 80 { 81 UINT32 i; 82 UINT32 Length; 83 char NewName[4]; 84 85 86 /* Copy name locally in case the original name is not writeable */ 87 88 *ACPI_CAST_PTR (UINT32, &NewName[0]) = Name; 89 90 /* Ensure that the name is printable, even if we have to fix it */ 91 92 AcpiUtRepairName (NewName); 93 94 /* Remove all trailing underscores from the name */ 95 96 Length = ACPI_NAME_SIZE; 97 for (i = (ACPI_NAME_SIZE - 1); i != 0; i--) 98 { 99 if (NewName[i] == '_') 100 { 101 Length--; 102 } 103 else 104 { 105 break; 106 } 107 } 108 109 /* Dump the name, up to the start of the trailing underscores */ 110 111 for (i = 0; i < Length; i++) 112 { 113 AcpiOsPrintf ("%c", NewName[i]); 114 } 115 116 return (Length); 117 } 118 119 120 /******************************************************************************* 121 * 122 * FUNCTION: AcpiPsDisplayObjectPathname 123 * 124 * PARAMETERS: WalkState - Current walk state 125 * Op - Object whose pathname is to be obtained 126 * 127 * RETURN: Status 128 * 129 * DESCRIPTION: Diplay the pathname associated with a named object. Two 130 * versions. One searches the parse tree (for parser-only 131 * applications suchas AcpiDump), and the other searches the 132 * ACPI namespace (the parse tree is probably deleted) 133 * 134 ******************************************************************************/ 135 136 ACPI_STATUS 137 AcpiPsDisplayObjectPathname ( 138 ACPI_WALK_STATE *WalkState, 139 ACPI_PARSE_OBJECT *Op) 140 { 141 ACPI_STATUS Status; 142 ACPI_NAMESPACE_NODE *Node; 143 ACPI_BUFFER Buffer; 144 UINT32 DebugLevel; 145 146 147 /* Save current debug level so we don't get extraneous debug output */ 148 149 DebugLevel = AcpiDbgLevel; 150 AcpiDbgLevel = 0; 151 152 /* Just get the Node out of the Op object */ 153 154 Node = Op->Common.Node; 155 if (!Node) 156 { 157 /* Node not defined in this scope, look it up */ 158 159 Status = AcpiNsLookup (WalkState->ScopeInfo, Op->Common.Value.String, 160 ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, 161 WalkState, &(Node)); 162 163 if (ACPI_FAILURE (Status)) 164 { 165 /* 166 * We can't get the pathname since the object 167 * is not in the namespace. This can happen during single 168 * stepping where a dynamic named object is *about* to be created. 169 */ 170 AcpiOsPrintf (" [Path not found]"); 171 goto Exit; 172 } 173 174 /* Save it for next time. */ 175 176 Op->Common.Node = Node; 177 } 178 179 /* Convert NamedDesc/handle to a full pathname */ 180 181 Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER; 182 Status = AcpiNsHandleToPathname (Node, &Buffer); 183 if (ACPI_FAILURE (Status)) 184 { 185 AcpiOsPrintf ("****Could not get pathname****)"); 186 goto Exit; 187 } 188 189 AcpiOsPrintf (" (Path %s)", (char *) Buffer.Pointer); 190 ACPI_FREE (Buffer.Pointer); 191 192 193 Exit: 194 /* Restore the debug level */ 195 196 AcpiDbgLevel = DebugLevel; 197 return (Status); 198 } 199 200 201 /******************************************************************************* 202 * 203 * FUNCTION: AcpiDmNamestring 204 * 205 * PARAMETERS: Name - ACPI Name string to store 206 * 207 * RETURN: None 208 * 209 * DESCRIPTION: Decode and dump an ACPI namestring. Handles prefix characters 210 * 211 ******************************************************************************/ 212 213 void 214 AcpiDmNamestring ( 215 char *Name) 216 { 217 UINT32 SegCount; 218 219 220 if (!Name) 221 { 222 return; 223 } 224 225 /* Handle all Scope Prefix operators */ 226 227 while (ACPI_IS_ROOT_PREFIX (ACPI_GET8 (Name)) || 228 ACPI_IS_PARENT_PREFIX (ACPI_GET8 (Name))) 229 { 230 /* Append prefix character */ 231 232 AcpiOsPrintf ("%1c", ACPI_GET8 (Name)); 233 Name++; 234 } 235 236 switch (ACPI_GET8 (Name)) 237 { 238 case 0: 239 240 SegCount = 0; 241 break; 242 243 case AML_DUAL_NAME_PREFIX: 244 245 SegCount = 2; 246 Name++; 247 break; 248 249 case AML_MULTI_NAME_PREFIX_OP: 250 251 SegCount = (UINT32) ACPI_GET8 (Name + 1); 252 Name += 2; 253 break; 254 255 default: 256 257 SegCount = 1; 258 break; 259 } 260 261 while (SegCount) 262 { 263 /* Append Name segment */ 264 265 AcpiDmDumpName (*ACPI_CAST_PTR (UINT32, Name)); 266 267 SegCount--; 268 if (SegCount) 269 { 270 /* Not last name, append dot separator */ 271 272 AcpiOsPrintf ("."); 273 } 274 Name += ACPI_NAME_SIZE; 275 } 276 } 277 278 279 #ifdef ACPI_OBSOLETE_FUNCTIONS 280 /******************************************************************************* 281 * 282 * FUNCTION: AcpiDmDisplayPath 283 * 284 * PARAMETERS: Op - Named Op whose path is to be constructed 285 * 286 * RETURN: None 287 * 288 * DESCRIPTION: Walk backwards from current scope and display the name 289 * of each previous level of scope up to the root scope 290 * (like "pwd" does with file systems) 291 * 292 ******************************************************************************/ 293 294 void 295 AcpiDmDisplayPath ( 296 ACPI_PARSE_OBJECT *Op) 297 { 298 ACPI_PARSE_OBJECT *Prev; 299 ACPI_PARSE_OBJECT *Search; 300 UINT32 Name; 301 BOOLEAN DoDot = FALSE; 302 ACPI_PARSE_OBJECT *NamePath; 303 const ACPI_OPCODE_INFO *OpInfo; 304 305 306 /* We are only interested in named objects */ 307 308 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 309 if (!(OpInfo->Flags & AML_NSNODE)) 310 { 311 return; 312 } 313 314 if (OpInfo->Flags & AML_CREATE) 315 { 316 /* Field creation - check for a fully qualified namepath */ 317 318 if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP) 319 { 320 NamePath = AcpiPsGetArg (Op, 3); 321 } 322 else 323 { 324 NamePath = AcpiPsGetArg (Op, 2); 325 } 326 327 if ((NamePath) && 328 (NamePath->Common.Value.String) && 329 (ACPI_IS_ROOT_PREFIX (NamePath->Common.Value.String[0]))) 330 { 331 AcpiDmNamestring (NamePath->Common.Value.String); 332 return; 333 } 334 } 335 336 Prev = NULL; /* Start with Root Node */ 337 338 while (Prev != Op) 339 { 340 /* Search upwards in the tree to find scope with "prev" as its parent */ 341 342 Search = Op; 343 for (; ;) 344 { 345 if (Search->Common.Parent == Prev) 346 { 347 break; 348 } 349 350 /* Go up one level */ 351 352 Search = Search->Common.Parent; 353 } 354 355 if (Prev) 356 { 357 OpInfo = AcpiPsGetOpcodeInfo (Search->Common.AmlOpcode); 358 if (!(OpInfo->Flags & AML_FIELD)) 359 { 360 /* Below root scope, append scope name */ 361 362 if (DoDot) 363 { 364 /* Append dot */ 365 366 AcpiOsPrintf ("."); 367 } 368 369 if (OpInfo->Flags & AML_CREATE) 370 { 371 if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP) 372 { 373 NamePath = AcpiPsGetArg (Op, 3); 374 } 375 else 376 { 377 NamePath = AcpiPsGetArg (Op, 2); 378 } 379 380 if ((NamePath) && 381 (NamePath->Common.Value.String)) 382 { 383 AcpiDmDumpName (NamePath->Common.Value.String); 384 } 385 } 386 else 387 { 388 Name = AcpiPsGetName (Search); 389 AcpiDmDumpName ((char *) &Name); 390 } 391 392 DoDot = TRUE; 393 } 394 } 395 Prev = Search; 396 } 397 } 398 399 400 /******************************************************************************* 401 * 402 * FUNCTION: AcpiDmValidateName 403 * 404 * PARAMETERS: Name - 4 character ACPI name 405 * 406 * RETURN: None 407 * 408 * DESCRIPTION: Lookup the name 409 * 410 ******************************************************************************/ 411 412 void 413 AcpiDmValidateName ( 414 char *Name, 415 ACPI_PARSE_OBJECT *Op) 416 { 417 418 if ((!Name) || 419 (!Op->Common.Parent)) 420 { 421 return; 422 } 423 424 if (!Op->Common.Node) 425 { 426 AcpiOsPrintf ( 427 " /**** Name not found or not accessible from this scope ****/ "); 428 } 429 430 ACPI_PARSE_OBJECT *TargetOp; 431 432 433 if ((!Name) || 434 (!Op->Common.Parent)) 435 { 436 return; 437 } 438 439 TargetOp = AcpiPsFind (Op, Name, 0, 0); 440 if (!TargetOp) 441 { 442 /* 443 * Didn't find the name in the parse tree. This may be 444 * a problem, or it may simply be one of the predefined names 445 * (such as _OS_). Rather than worry about looking up all 446 * the predefined names, just display the name as given 447 */ 448 AcpiOsPrintf ( 449 " /**** Name not found or not accessible from this scope ****/ "); 450 } 451 } 452 #endif 453 454 #endif 455