1 /*******************************************************************************
3 * Module Name: dmnames - AML disassembler, names, namestrings, pathnames
5 ******************************************************************************/
8 * Copyright (C) 2000 - 2014, Intel Corp.
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12 * modification, are permitted provided that the following conditions
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20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
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23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
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
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52 #ifdef ACPI_DISASSEMBLER
54 #define _COMPONENT ACPI_CA_DEBUGGER
55 ACPI_MODULE_NAME ("dmnames")
57 /* Local prototypes */
59 #ifdef ACPI_OBSOLETE_FUNCTIONS
62 ACPI_PARSE_OBJECT *Op);
66 /*******************************************************************************
68 * FUNCTION: AcpiDmDumpName
70 * PARAMETERS: Name - 4 character ACPI name
72 * RETURN: Final length of name
74 * DESCRIPTION: Dump an ACPI name, minus any trailing underscores.
76 ******************************************************************************/
87 /* Copy name locally in case the original name is not writeable */
89 *ACPI_CAST_PTR (UINT32, &NewName[0]) = Name;
91 /* Ensure that the name is printable, even if we have to fix it */
93 AcpiUtRepairName (NewName);
95 /* Remove all trailing underscores from the name */
97 Length = ACPI_NAME_SIZE;
98 for (i = (ACPI_NAME_SIZE - 1); i != 0; i--)
100 if (NewName[i] == '_')
110 /* Dump the name, up to the start of the trailing underscores */
112 for (i = 0; i < Length; i++)
114 AcpiOsPrintf ("%c", NewName[i]);
121 /*******************************************************************************
123 * FUNCTION: AcpiPsDisplayObjectPathname
125 * PARAMETERS: WalkState - Current walk state
126 * Op - Object whose pathname is to be obtained
130 * DESCRIPTION: Diplay the pathname associated with a named object. Two
131 * versions. One searches the parse tree (for parser-only
132 * applications suchas AcpiDump), and the other searches the
133 * ACPI namespace (the parse tree is probably deleted)
135 ******************************************************************************/
138 AcpiPsDisplayObjectPathname (
139 ACPI_WALK_STATE *WalkState,
140 ACPI_PARSE_OBJECT *Op)
143 ACPI_NAMESPACE_NODE *Node;
148 /* Save current debug level so we don't get extraneous debug output */
150 DebugLevel = AcpiDbgLevel;
153 /* Just get the Node out of the Op object */
155 Node = Op->Common.Node;
158 /* Node not defined in this scope, look it up */
160 Status = AcpiNsLookup (WalkState->ScopeInfo, Op->Common.Value.String,
161 ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
164 if (ACPI_FAILURE (Status))
167 * We can't get the pathname since the object
168 * is not in the namespace. This can happen during single
169 * stepping where a dynamic named object is *about* to be created.
171 AcpiOsPrintf (" [Path not found]");
175 /* Save it for next time. */
177 Op->Common.Node = Node;
180 /* Convert NamedDesc/handle to a full pathname */
182 Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
183 Status = AcpiNsHandleToPathname (Node, &Buffer);
184 if (ACPI_FAILURE (Status))
186 AcpiOsPrintf ("****Could not get pathname****)");
190 AcpiOsPrintf (" (Path %s)", (char *) Buffer.Pointer);
191 ACPI_FREE (Buffer.Pointer);
195 /* Restore the debug level */
197 AcpiDbgLevel = DebugLevel;
202 /*******************************************************************************
204 * FUNCTION: AcpiDmNamestring
206 * PARAMETERS: Name - ACPI Name string to store
210 * DESCRIPTION: Decode and dump an ACPI namestring. Handles prefix characters
212 ******************************************************************************/
226 /* Handle all Scope Prefix operators */
228 while (ACPI_IS_ROOT_PREFIX (ACPI_GET8 (Name)) ||
229 ACPI_IS_PARENT_PREFIX (ACPI_GET8 (Name)))
231 /* Append prefix character */
233 AcpiOsPrintf ("%1c", ACPI_GET8 (Name));
237 switch (ACPI_GET8 (Name))
244 case AML_DUAL_NAME_PREFIX:
250 case AML_MULTI_NAME_PREFIX_OP:
252 SegCount = (UINT32) ACPI_GET8 (Name + 1);
264 /* Append Name segment */
266 AcpiDmDumpName (*ACPI_CAST_PTR (UINT32, Name));
271 /* Not last name, append dot separator */
275 Name += ACPI_NAME_SIZE;
280 #ifdef ACPI_OBSOLETE_FUNCTIONS
281 /*******************************************************************************
283 * FUNCTION: AcpiDmDisplayPath
285 * PARAMETERS: Op - Named Op whose path is to be constructed
289 * DESCRIPTION: Walk backwards from current scope and display the name
290 * of each previous level of scope up to the root scope
291 * (like "pwd" does with file systems)
293 ******************************************************************************/
297 ACPI_PARSE_OBJECT *Op)
299 ACPI_PARSE_OBJECT *Prev;
300 ACPI_PARSE_OBJECT *Search;
302 BOOLEAN DoDot = FALSE;
303 ACPI_PARSE_OBJECT *NamePath;
304 const ACPI_OPCODE_INFO *OpInfo;
307 /* We are only interested in named objects */
309 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
310 if (!(OpInfo->Flags & AML_NSNODE))
315 if (OpInfo->Flags & AML_CREATE)
317 /* Field creation - check for a fully qualified namepath */
319 if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)
321 NamePath = AcpiPsGetArg (Op, 3);
325 NamePath = AcpiPsGetArg (Op, 2);
329 (NamePath->Common.Value.String) &&
330 (ACPI_IS_ROOT_PREFIX (NamePath->Common.Value.String[0])))
332 AcpiDmNamestring (NamePath->Common.Value.String);
337 Prev = NULL; /* Start with Root Node */
341 /* Search upwards in the tree to find scope with "prev" as its parent */
346 if (Search->Common.Parent == Prev)
351 /* Go up one level */
353 Search = Search->Common.Parent;
358 OpInfo = AcpiPsGetOpcodeInfo (Search->Common.AmlOpcode);
359 if (!(OpInfo->Flags & AML_FIELD))
361 /* Below root scope, append scope name */
370 if (OpInfo->Flags & AML_CREATE)
372 if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)
374 NamePath = AcpiPsGetArg (Op, 3);
378 NamePath = AcpiPsGetArg (Op, 2);
382 (NamePath->Common.Value.String))
384 AcpiDmDumpName (NamePath->Common.Value.String);
389 Name = AcpiPsGetName (Search);
390 AcpiDmDumpName ((char *) &Name);
401 /*******************************************************************************
403 * FUNCTION: AcpiDmValidateName
405 * PARAMETERS: Name - 4 character ACPI name
409 * DESCRIPTION: Lookup the name
411 ******************************************************************************/
416 ACPI_PARSE_OBJECT *Op)
420 (!Op->Common.Parent))
425 if (!Op->Common.Node)
428 " /**** Name not found or not accessible from this scope ****/ ");
431 ACPI_PARSE_OBJECT *TargetOp;
435 (!Op->Common.Parent))
440 TargetOp = AcpiPsFind (Op, Name, 0, 0);
444 * Didn't find the name in the parse tree. This may be
445 * a problem, or it may simply be one of the predefined names
446 * (such as _OS_). Rather than worry about looking up all
447 * the predefined names, just display the name as given
450 " /**** Name not found or not accessible from this scope ****/ ");