452 lines
12 KiB
C
452 lines
12 KiB
C
/*******************************************************************************
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*
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* Module Name: dmnames - AML disassembler, names, namestrings, pathnames
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*
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******************************************************************************/
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/*
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* Copyright (C) 2000 - 2013, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include "acpi.h"
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#include "accommon.h"
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#include "amlcode.h"
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#include "acnamesp.h"
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#include "acdisasm.h"
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#ifdef ACPI_DISASSEMBLER
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#define _COMPONENT ACPI_CA_DEBUGGER
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ACPI_MODULE_NAME ("dmnames")
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/* Local prototypes */
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#ifdef ACPI_OBSOLETE_FUNCTIONS
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void
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AcpiDmDisplayPath (
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ACPI_PARSE_OBJECT *Op);
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#endif
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmDumpName
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*
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* PARAMETERS: Name - 4 character ACPI name
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*
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* RETURN: Final length of name
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*
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* DESCRIPTION: Dump an ACPI name, minus any trailing underscores.
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*
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******************************************************************************/
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UINT32
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AcpiDmDumpName (
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UINT32 Name)
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{
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UINT32 i;
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UINT32 Length;
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char NewName[4];
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/* Copy name locally in case the original name is not writeable */
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*ACPI_CAST_PTR (UINT32, &NewName[0]) = Name;
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/* Ensure that the name is printable, even if we have to fix it */
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AcpiUtRepairName (NewName);
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/* Remove all trailing underscores from the name */
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Length = ACPI_NAME_SIZE;
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for (i = (ACPI_NAME_SIZE - 1); i != 0; i--)
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{
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if (NewName[i] == '_')
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{
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Length--;
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}
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else
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{
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break;
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}
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}
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/* Dump the name, up to the start of the trailing underscores */
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for (i = 0; i < Length; i++)
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{
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AcpiOsPrintf ("%c", NewName[i]);
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}
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return (Length);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiPsDisplayObjectPathname
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*
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* PARAMETERS: WalkState - Current walk state
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* Op - Object whose pathname is to be obtained
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*
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* RETURN: Status
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*
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* DESCRIPTION: Diplay the pathname associated with a named object. Two
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* versions. One searches the parse tree (for parser-only
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* applications suchas AcpiDump), and the other searches the
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* ACPI namespace (the parse tree is probably deleted)
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiPsDisplayObjectPathname (
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ACPI_WALK_STATE *WalkState,
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ACPI_PARSE_OBJECT *Op)
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{
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ACPI_STATUS Status;
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ACPI_NAMESPACE_NODE *Node;
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ACPI_BUFFER Buffer;
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UINT32 DebugLevel;
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/* Save current debug level so we don't get extraneous debug output */
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DebugLevel = AcpiDbgLevel;
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AcpiDbgLevel = 0;
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/* Just get the Node out of the Op object */
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Node = Op->Common.Node;
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if (!Node)
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{
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/* Node not defined in this scope, look it up */
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Status = AcpiNsLookup (WalkState->ScopeInfo, Op->Common.Value.String,
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ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
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WalkState, &(Node));
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if (ACPI_FAILURE (Status))
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{
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/*
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* We can't get the pathname since the object
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* is not in the namespace. This can happen during single
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* stepping where a dynamic named object is *about* to be created.
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*/
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AcpiOsPrintf (" [Path not found]");
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goto Exit;
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}
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/* Save it for next time. */
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Op->Common.Node = Node;
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}
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/* Convert NamedDesc/handle to a full pathname */
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Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
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Status = AcpiNsHandleToPathname (Node, &Buffer);
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if (ACPI_FAILURE (Status))
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{
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AcpiOsPrintf ("****Could not get pathname****)");
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goto Exit;
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}
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AcpiOsPrintf (" (Path %s)", (char *) Buffer.Pointer);
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ACPI_FREE (Buffer.Pointer);
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Exit:
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/* Restore the debug level */
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AcpiDbgLevel = DebugLevel;
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return (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmNamestring
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*
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* PARAMETERS: Name - ACPI Name string to store
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*
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* RETURN: None
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*
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* DESCRIPTION: Decode and dump an ACPI namestring. Handles prefix characters
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*
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******************************************************************************/
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void
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AcpiDmNamestring (
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char *Name)
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{
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UINT32 SegCount;
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if (!Name)
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{
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return;
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}
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/* Handle all Scope Prefix operators */
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while (ACPI_IS_ROOT_PREFIX (ACPI_GET8 (Name)) ||
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ACPI_IS_PARENT_PREFIX (ACPI_GET8 (Name)))
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{
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/* Append prefix character */
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AcpiOsPrintf ("%1c", ACPI_GET8 (Name));
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Name++;
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}
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switch (ACPI_GET8 (Name))
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{
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case 0:
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SegCount = 0;
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break;
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case AML_DUAL_NAME_PREFIX:
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SegCount = 2;
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Name++;
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break;
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case AML_MULTI_NAME_PREFIX_OP:
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SegCount = (UINT32) ACPI_GET8 (Name + 1);
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Name += 2;
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break;
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default:
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SegCount = 1;
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break;
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}
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while (SegCount)
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{
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/* Append Name segment */
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AcpiDmDumpName (*ACPI_CAST_PTR (UINT32, Name));
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SegCount--;
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if (SegCount)
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{
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/* Not last name, append dot separator */
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AcpiOsPrintf (".");
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}
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Name += ACPI_NAME_SIZE;
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}
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}
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#ifdef ACPI_OBSOLETE_FUNCTIONS
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmDisplayPath
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*
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* PARAMETERS: Op - Named Op whose path is to be constructed
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*
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* RETURN: None
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*
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* DESCRIPTION: Walk backwards from current scope and display the name
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* of each previous level of scope up to the root scope
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* (like "pwd" does with file systems)
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*
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******************************************************************************/
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void
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AcpiDmDisplayPath (
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ACPI_PARSE_OBJECT *Op)
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{
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ACPI_PARSE_OBJECT *Prev;
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ACPI_PARSE_OBJECT *Search;
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UINT32 Name;
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BOOLEAN DoDot = FALSE;
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ACPI_PARSE_OBJECT *NamePath;
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const ACPI_OPCODE_INFO *OpInfo;
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/* We are only interested in named objects */
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OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
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if (!(OpInfo->Flags & AML_NSNODE))
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{
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return;
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}
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if (OpInfo->Flags & AML_CREATE)
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{
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/* Field creation - check for a fully qualified namepath */
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if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)
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{
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NamePath = AcpiPsGetArg (Op, 3);
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}
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else
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{
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NamePath = AcpiPsGetArg (Op, 2);
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}
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if ((NamePath) &&
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(NamePath->Common.Value.String) &&
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(ACPI_IS_ROOT_PREFIX (NamePath->Common.Value.String[0])))
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{
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AcpiDmNamestring (NamePath->Common.Value.String);
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return;
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}
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}
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Prev = NULL; /* Start with Root Node */
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while (Prev != Op)
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{
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/* Search upwards in the tree to find scope with "prev" as its parent */
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Search = Op;
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for (; ;)
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{
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if (Search->Common.Parent == Prev)
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{
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break;
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}
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/* Go up one level */
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Search = Search->Common.Parent;
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}
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if (Prev)
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{
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OpInfo = AcpiPsGetOpcodeInfo (Search->Common.AmlOpcode);
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if (!(OpInfo->Flags & AML_FIELD))
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{
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/* Below root scope, append scope name */
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if (DoDot)
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{
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/* Append dot */
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AcpiOsPrintf (".");
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}
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if (OpInfo->Flags & AML_CREATE)
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{
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if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)
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{
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NamePath = AcpiPsGetArg (Op, 3);
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}
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else
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{
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NamePath = AcpiPsGetArg (Op, 2);
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}
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if ((NamePath) &&
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(NamePath->Common.Value.String))
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{
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AcpiDmDumpName (NamePath->Common.Value.String);
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}
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}
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else
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{
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Name = AcpiPsGetName (Search);
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AcpiDmDumpName ((char *) &Name);
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}
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DoDot = TRUE;
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}
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}
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Prev = Search;
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmValidateName
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*
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* PARAMETERS: Name - 4 character ACPI name
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*
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* RETURN: None
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*
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* DESCRIPTION: Lookup the name
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*
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******************************************************************************/
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void
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AcpiDmValidateName (
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char *Name,
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ACPI_PARSE_OBJECT *Op)
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{
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if ((!Name) ||
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(!Op->Common.Parent))
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{
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return;
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}
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if (!Op->Common.Node)
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{
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AcpiOsPrintf (
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" /**** Name not found or not accessible from this scope ****/ ");
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}
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ACPI_PARSE_OBJECT *TargetOp;
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if ((!Name) ||
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(!Op->Common.Parent))
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{
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return;
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}
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TargetOp = AcpiPsFind (Op, Name, 0, 0);
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if (!TargetOp)
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{
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/*
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* Didn't find the name in the parse tree. This may be
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* a problem, or it may simply be one of the predefined names
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* (such as _OS_). Rather than worry about looking up all
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* the predefined names, just display the name as given
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*/
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AcpiOsPrintf (
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" /**** Name not found or not accessible from this scope ****/ ");
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}
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}
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#endif
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#endif
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