/*******************************************************************************
*
* Module Name: dmnames - AML disassembler, names, namestrings, pathnames
*
******************************************************************************/
/*
* Copyright (C) 2000 - 2018, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#include "acpi.h"
#include "accommon.h"
#include "amlcode.h"
#include "acnamesp.h"
#include "acdisasm.h"
#define _COMPONENT ACPI_CA_DEBUGGER
ACPI_MODULE_NAME ("dmnames")
/* Local prototypes */
#ifdef ACPI_OBSOLETE_FUNCTIONS
void
AcpiDmDisplayPath (
ACPI_PARSE_OBJECT *Op);
#endif
/*******************************************************************************
*
* FUNCTION: AcpiDmDumpName
*
* PARAMETERS: Name - 4 character ACPI name
*
* RETURN: Final length of name
*
* DESCRIPTION: Dump an ACPI name, minus any trailing underscores.
*
******************************************************************************/
UINT32
AcpiDmDumpName (
UINT32 Name)
{
UINT32 i;
UINT32 Length;
char NewName[4];
/* Copy name locally in case the original name is not writeable */
*ACPI_CAST_PTR (UINT32, &NewName[0]) = Name;
/* Ensure that the name is printable, even if we have to fix it */
AcpiUtRepairName (NewName);
/* Remove all trailing underscores from the name */
Length = ACPI_NAME_SIZE;
for (i = (ACPI_NAME_SIZE - 1); i != 0; i--)
{
if (NewName[i] == '_')
{
Length--;
}
else
{
break;
}
}
/* Dump the name, up to the start of the trailing underscores */
for (i = 0; i < Length; i++)
{
AcpiOsPrintf ("%c", NewName[i]);
}
return (Length);
}
/*******************************************************************************
*
* FUNCTION: AcpiPsDisplayObjectPathname
*
* PARAMETERS: WalkState - Current walk state
* Op - Object whose pathname is to be obtained
*
* RETURN: Status
*
* DESCRIPTION: Diplay the pathname associated with a named object. Two
* versions. One searches the parse tree (for parser-only
* applications suchas AcpiDump), and the other searches the
* ACPI namespace (the parse tree is probably deleted)
*
******************************************************************************/
ACPI_STATUS
AcpiPsDisplayObjectPathname (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status;
ACPI_NAMESPACE_NODE *Node;
ACPI_BUFFER Buffer;
UINT32 DebugLevel;
/* Save current debug level so we don't get extraneous debug output */
DebugLevel = AcpiDbgLevel;
AcpiDbgLevel = 0;
/* Just get the Node out of the Op object */
Node = Op->Common.Node;
if (!Node)
{
/* Node not defined in this scope, look it up */
Status = AcpiNsLookup (WalkState->ScopeInfo, Op->Common.Value.String,
ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
WalkState, &(Node));
if (ACPI_FAILURE (Status))
{
/*
* We can't get the pathname since the object is not in the
* namespace. This can happen during single stepping
* where a dynamic named object is *about* to be created.
*/
AcpiOsPrintf (" [Path not found]");
goto Exit;
}
/* Save it for next time. */
Op->Common.Node = Node;
}
/* Convert NamedDesc/handle to a full pathname */
Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
Status = AcpiNsHandleToPathname (Node, &Buffer, FALSE);
if (ACPI_FAILURE (Status))
{
AcpiOsPrintf ("****Could not get pathname****)");
goto Exit;
}
AcpiOsPrintf (" (Path %s)", (char *) Buffer.Pointer);
ACPI_FREE (Buffer.Pointer);
Exit:
/* Restore the debug level */
AcpiDbgLevel = DebugLevel;
return (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmNamestring
*
* PARAMETERS: Name - ACPI Name string to store
*
* RETURN: None
*
* DESCRIPTION: Decode and dump an ACPI namestring. Handles prefix characters
*
******************************************************************************/
void
AcpiDmNamestring (
char *Name)
{
UINT32 SegCount;
if (!Name)
{
return;
}
/* Handle all Scope Prefix operators */
while (ACPI_IS_ROOT_PREFIX (ACPI_GET8 (Name)) ||
ACPI_IS_PARENT_PREFIX (ACPI_GET8 (Name)))
{
/* Append prefix character */
AcpiOsPrintf ("%1c", ACPI_GET8 (Name));
Name++;
}
switch (ACPI_GET8 (Name))
{
case 0:
SegCount = 0;
break;
case AML_DUAL_NAME_PREFIX:
SegCount = 2;
Name++;
break;
case AML_MULTI_NAME_PREFIX:
SegCount = (UINT32) ACPI_GET8 (Name + 1);
Name += 2;
break;
default:
SegCount = 1;
break;
}
while (SegCount)
{
/* Append Name segment */
AcpiDmDumpName (*ACPI_CAST_PTR (UINT32, Name));
SegCount--;
if (SegCount)
{
/* Not last name, append dot separator */
AcpiOsPrintf (".");
}
Name += ACPI_NAME_SIZE;
}
}
#ifdef ACPI_OBSOLETE_FUNCTIONS
/*******************************************************************************
*
* FUNCTION: AcpiDmDisplayPath
*
* PARAMETERS: Op - Named Op whose path is to be constructed
*
* RETURN: None
*
* DESCRIPTION: Walk backwards from current scope and display the name
* of each previous level of scope up to the root scope
* (like "pwd" does with file systems)
*
******************************************************************************/
void
AcpiDmDisplayPath (
ACPI_PARSE_OBJECT *Op)
{
ACPI_PARSE_OBJECT *Prev;
ACPI_PARSE_OBJECT *Search;
UINT32 Name;
BOOLEAN DoDot = FALSE;
ACPI_PARSE_OBJECT *NamePath;
const ACPI_OPCODE_INFO *OpInfo;
/* We are only interested in named objects */
OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
if (!(OpInfo->Flags & AML_NSNODE))
{
return;
}
if (OpInfo->Flags & AML_CREATE)
{
/* Field creation - check for a fully qualified namepath */
if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)
{
NamePath = AcpiPsGetArg (Op, 3);
}
else
{
NamePath = AcpiPsGetArg (Op, 2);
}
if ((NamePath) &&
(NamePath->Common.Value.String) &&
(ACPI_IS_ROOT_PREFIX (NamePath->Common.Value.String[0])))
{
AcpiDmNamestring (NamePath->Common.Value.String);
return;
}
}
Prev = NULL; /* Start with Root Node */
while (Prev != Op)
{
/* Search upwards in the tree to find scope with "prev" as its parent */
Search = Op;
for (; ;)
{
if (Search->Common.Parent == Prev)
{
break;
}
/* Go up one level */
Search = Search->Common.Parent;
}
if (Prev)
{
OpInfo = AcpiPsGetOpcodeInfo (Search->Common.AmlOpcode);
if (!(OpInfo->Flags & AML_FIELD))
{
/* Below root scope, append scope name */
if (DoDot)
{
/* Append dot */
AcpiOsPrintf (".");
}
if (OpInfo->Flags & AML_CREATE)
{
if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)
{
NamePath = AcpiPsGetArg (Op, 3);
}
else
{
NamePath = AcpiPsGetArg (Op, 2);
}
if ((NamePath) &&
(NamePath->Common.Value.String))
{
AcpiDmDumpName (NamePath->Common.Value.String);
}
}
else
{
Name = AcpiPsGetName (Search);
AcpiDmDumpName ((char *) &Name);
}
DoDot = TRUE;
}
}
Prev = Search;
}
}
/*******************************************************************************
*
* FUNCTION: AcpiDmValidateName
*
* PARAMETERS: Name - 4 character ACPI name
*
* RETURN: None
*
* DESCRIPTION: Lookup the name
*
******************************************************************************/
void
AcpiDmValidateName (
char *Name,
ACPI_PARSE_OBJECT *Op)
{
ACPI_PARSE_OBJECT *TargetOp;
if ((!Name) ||
(!Op->Common.Parent))
{
return;
}
if (!Op->Common.Node)
{
AcpiOsPrintf (
" /**** Name not found or not accessible from this scope ****/ ");
}
if ((!Name) ||
(!Op->Common.Parent))
{
return;
}
TargetOp = AcpiPsFind (Op, Name, 0, 0);
if (!TargetOp)
{
/*
* Didn't find the name in the parse tree. This may be
* a problem, or it may simply be one of the predefined names
* (such as _OS_). Rather than worry about looking up all
* the predefined names, just display the name as given
*/
AcpiOsPrintf (
" /**** Name not found or not accessible from this scope ****/ ");
}
}
#endif