/******************************************************************************
*
* Module Name: dmextern - Support for External() ASL statements
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
* All rights reserved.
*
* 2. License
*
* 2.1. This is your license from Intel Corp. under its intellectual property
* rights. You may have additional license terms from the party that provided
* you this software, covering your right to use that party's intellectual
* property rights.
*
* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
* copy of the source code appearing in this file ("Covered Code") an
* irrevocable, perpetual, worldwide license under Intel's copyrights in the
* base code distributed originally by Intel ("Original Intel Code") to copy,
* make derivatives, distribute, use and display any portion of the Covered
* Code in any form, with the right to sublicense such rights; and
*
* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
* license (with the right to sublicense), under only those claims of Intel
* patents that are infringed by the Original Intel Code, to make, use, sell,
* offer to sell, and import the Covered Code and derivative works thereof
* solely to the minimum extent necessary to exercise the above copyright
* license, and in no event shall the patent license extend to any additions
* to or modifications of the Original Intel Code. No other license or right
* is granted directly or by implication, estoppel or otherwise;
*
* The above copyright and patent license is granted only if the following
* conditions are met:
*
* 3. Conditions
*
* 3.1. Redistribution of Source with Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification with rights to further distribute source must include
* the above Copyright Notice, the above License, this list of Conditions,
* and the following Disclaimer and Export Compliance provision. In addition,
* Licensee must cause all Covered Code to which Licensee contributes to
* contain a file documenting the changes Licensee made to create that Covered
* Code and the date of any change. Licensee must include in that file the
* documentation of any changes made by any predecessor Licensee. Licensee
* must include a prominent statement that the modification is derived,
* directly or indirectly, from Original Intel Code.
*
* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification without rights to further distribute source must
* include the following Disclaimer and Export Compliance provision in the
* documentation and/or other materials provided with distribution. In
* addition, Licensee may not authorize further sublicense of source of any
* portion of the Covered Code, and must include terms to the effect that the
* license from Licensee to its licensee is limited to the intellectual
* property embodied in the software Licensee provides to its licensee, and
* not to intellectual property embodied in modifications its licensee may
* make.
*
* 3.3. Redistribution of Executable. Redistribution in executable form of any
* substantial portion of the Covered Code or modification must reproduce the
* above Copyright Notice, and the following Disclaimer and Export Compliance
* provision in the documentation and/or other materials provided with the
* distribution.
*
* 3.4. Intel retains all right, title, and interest in and to the Original
* Intel Code.
*
* 3.5. Neither the name Intel nor any other trademark owned or controlled by
* Intel shall be used in advertising or otherwise to promote the sale, use or
* other dealings in products derived from or relating to the Covered Code
* without prior written authorization from Intel.
*
* 4. Disclaimer and Export Compliance
*
* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
* PARTICULAR PURPOSE.
*
* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
* LIMITED REMEDY.
*
* 4.3. Licensee shall not export, either directly or indirectly, any of this
* software or system incorporating such software without first obtaining any
* required license or other approval from the U. S. Department of Commerce or
* any other agency or department of the United States Government. In the
* event Licensee exports any such software from the United States or
* re-exports any such software from a foreign destination, Licensee shall
* ensure that the distribution and export/re-export of the software is in
* compliance with all laws, regulations, orders, or other restrictions of the
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
* any of its subsidiaries will export/re-export any technical data, process,
* software, or service, directly or indirectly, to any country for which the
* United States government or any agency thereof requires an export license,
* other governmental approval, or letter of assurance, without first obtaining
* such license, approval or letter.
*
*****************************************************************************/
#include "acpi.h"
#include "accommon.h"
#include "amlcode.h"
#include "acnamesp.h"
#include "acdisasm.h"
/*
* This module is used for application-level code (iASL disassembler) only.
*
* It contains the code to create and emit any necessary External() ASL
* statements for the module being disassembled.
*/
#define _COMPONENT ACPI_CA_DISASSEMBLER
ACPI_MODULE_NAME ("dmextern")
/*
* This table maps ACPI_OBJECT_TYPEs to the corresponding ASL
* ObjectTypeKeyword. Used to generate typed external declarations
*/
static const char *AcpiGbl_DmTypeNames[] =
{
/* 00 */ "", /* Type ANY */
/* 01 */ ", IntObj",
/* 02 */ ", StrObj",
/* 03 */ ", BuffObj",
/* 04 */ ", PkgObj",
/* 05 */ ", FieldUnitObj",
/* 06 */ ", DeviceObj",
/* 07 */ ", EventObj",
/* 08 */ ", MethodObj",
/* 09 */ ", MutexObj",
/* 10 */ ", OpRegionObj",
/* 11 */ ", PowerResObj",
/* 12 */ ", ProcessorObj",
/* 13 */ ", ThermalZoneObj",
/* 14 */ ", BuffFieldObj",
/* 15 */ ", DDBHandleObj",
/* 16 */ "", /* Debug object */
/* 17 */ ", FieldUnitObj",
/* 18 */ ", FieldUnitObj",
/* 19 */ ", FieldUnitObj"
};
/* Local prototypes */
static const char *
AcpiDmGetObjectTypeName (
ACPI_OBJECT_TYPE Type);
static char *
AcpiDmNormalizeParentPrefix (
ACPI_PARSE_OBJECT *Op,
char *Path);
/*******************************************************************************
*
* FUNCTION: AcpiDmGetObjectTypeName
*
* PARAMETERS: Type - An ACPI_OBJECT_TYPE
*
* RETURN: Pointer to a string
*
* DESCRIPTION: Map an object type to the ASL object type string.
*
******************************************************************************/
static const char *
AcpiDmGetObjectTypeName (
ACPI_OBJECT_TYPE Type)
{
if (Type == ACPI_TYPE_LOCAL_SCOPE)
{
Type = ACPI_TYPE_DEVICE;
}
else if (Type > ACPI_TYPE_LOCAL_INDEX_FIELD)
{
return ("");
}
return (AcpiGbl_DmTypeNames[Type]);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmNormalizeParentPrefix
*
* PARAMETERS: Op - Parse op
* Path - Path with parent prefix
*
* RETURN: The full pathname to the object (from the namespace root)
*
* DESCRIPTION: Returns the full pathname of a path with parent prefix
* The caller must free the fullpath returned.
*
******************************************************************************/
static char *
AcpiDmNormalizeParentPrefix (
ACPI_PARSE_OBJECT *Op,
char *Path)
{
ACPI_NAMESPACE_NODE *Node;
char *Fullpath;
char *ParentPath;
ACPI_SIZE Length;
/* Search upwards in the parse tree until we reach a namespace node */
while (Op)
{
if (Op->Common.Node)
{
break;
}
Op = Op->Common.Parent;
}
if (!Op)
{
return (NULL);
}
/*
* Find the actual parent node for the reference:
* Remove all carat prefixes from the input path.
* There may be multiple parent prefixes (For example, ^^^M000)
*/
Node = Op->Common.Node;
while (Node && (*Path == (UINT8) AML_PARENT_PREFIX))
{
Node = Node->Parent;
Path++;
}
if (!Node)
{
return (NULL);
}
/* Get the full pathname for the parent node */
ParentPath = AcpiNsGetExternalPathname (Node);
if (!ParentPath)
{
return (NULL);
}
Length = (ACPI_STRLEN (ParentPath) + ACPI_STRLEN (Path) + 1);
if (ParentPath[1])
{
/*
* If ParentPath is not just a simple '\', increment the length
* for the required dot separator (ParentPath.Path)
*/
Length++;
}
Fullpath = ACPI_ALLOCATE_ZEROED (Length);
if (!Fullpath)
{
goto Cleanup;
}
/*
* Concatenate parent fullpath and path. For example,
* parent fullpath "\_SB_", Path "^INIT", Fullpath "\_SB_.INIT"
*
* Copy the parent path
*/
ACPI_STRCAT (Fullpath, ParentPath);
/* Add dot separator (don't need dot if parent fullpath is a single "\") */
if (ParentPath[1])
{
ACPI_STRCAT (Fullpath, ".");
}
/* Copy child path (carat parent prefix(es) were skipped above) */
ACPI_STRCAT (Fullpath, Path);
Cleanup:
ACPI_FREE (ParentPath);
return (Fullpath);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmAddToExternalList
*
* PARAMETERS: Op - Current parser Op
* Path - Internal (AML) path to the object
* Type - ACPI object type to be added
* Value - Arg count if adding a Method object
*
* RETURN: None
*
* DESCRIPTION: Insert a new name into the global list of Externals which
* will in turn be later emitted as an External() declaration
* in the disassembled output.
*
******************************************************************************/
void
AcpiDmAddToExternalList (
ACPI_PARSE_OBJECT *Op,
char *Path,
UINT8 Type,
UINT32 Value)
{
char *ExternalPath;
char *Fullpath = NULL;
ACPI_EXTERNAL_LIST *NewExternal;
ACPI_EXTERNAL_LIST *NextExternal;
ACPI_EXTERNAL_LIST *PrevExternal = NULL;
ACPI_STATUS Status;
if (!Path)
{
return;
}
/* Externalize the ACPI path */
Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, Path,
NULL, &ExternalPath);
if (ACPI_FAILURE (Status))
{
return;
}
/* Get the full pathname from root if "Path" has a parent prefix */
if (*Path == (UINT8) AML_PARENT_PREFIX)
{
Fullpath = AcpiDmNormalizeParentPrefix (Op, ExternalPath);
if (Fullpath)
{
/* Set new external path */
ACPI_FREE (ExternalPath);
ExternalPath = Fullpath;
}
}
/* Check all existing externals to ensure no duplicates */
NextExternal = AcpiGbl_ExternalList;
while (NextExternal)
{
if (!ACPI_STRCMP (ExternalPath, NextExternal->Path))
{
/* Duplicate method, check that the Value (ArgCount) is the same */
if ((NextExternal->Type == ACPI_TYPE_METHOD) &&
(NextExternal->Value != Value))
{
ACPI_ERROR ((AE_INFO,
"Argument count mismatch for method %s %u %u",
NextExternal->Path, NextExternal->Value, Value));
}
/* Allow upgrade of type from ANY */
else if (NextExternal->Type == ACPI_TYPE_ANY)
{
NextExternal->Type = Type;
NextExternal->Value = Value;
}
ACPI_FREE (ExternalPath);
return;
}
NextExternal = NextExternal->Next;
}
/* Allocate and init a new External() descriptor */
NewExternal = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EXTERNAL_LIST));
if (!NewExternal)
{
ACPI_FREE (ExternalPath);
return;
}
NewExternal->Path = ExternalPath;
NewExternal->Type = Type;
NewExternal->Value = Value;
NewExternal->Length = (UINT16) ACPI_STRLEN (ExternalPath);
/* Was the external path with parent prefix normalized to a fullpath? */
if (Fullpath == ExternalPath)
{
/* Get new internal path */
Status = AcpiNsInternalizeName (ExternalPath, &Path);
if (ACPI_FAILURE (Status))
{
ACPI_FREE (ExternalPath);
ACPI_FREE (NewExternal);
return;
}
/* Set flag to indicate External->InternalPath need to be freed */
NewExternal->Flags |= ACPI_IPATH_ALLOCATED;
}
NewExternal->InternalPath = Path;
/* Link the new descriptor into the global list, ordered by string length */
NextExternal = AcpiGbl_ExternalList;
while (NextExternal)
{
if (NewExternal->Length <= NextExternal->Length)
{
if (PrevExternal)
{
PrevExternal->Next = NewExternal;
}
else
{
AcpiGbl_ExternalList = NewExternal;
}
NewExternal->Next = NextExternal;
return;
}
PrevExternal = NextExternal;
NextExternal = NextExternal->Next;
}
if (PrevExternal)
{
PrevExternal->Next = NewExternal;
}
else
{
AcpiGbl_ExternalList = NewExternal;
}
}
/*******************************************************************************
*
* FUNCTION: AcpiDmAddExternalsToNamespace
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Add all externals to the namespace. Allows externals to be
* "resolved".
*
******************************************************************************/
void
AcpiDmAddExternalsToNamespace (
void)
{
ACPI_STATUS Status;
ACPI_NAMESPACE_NODE *Node;
ACPI_OPERAND_OBJECT *MethodDesc;
ACPI_EXTERNAL_LIST *External = AcpiGbl_ExternalList;
while (External)
{
/* Add the external name (object) into the namespace */
Status = AcpiNsLookup (NULL, External->InternalPath, External->Type,
ACPI_IMODE_LOAD_PASS1,
ACPI_NS_EXTERNAL | ACPI_NS_DONT_OPEN_SCOPE,
NULL, &Node);
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status,
"while adding external to namespace [%s]",
External->Path));
}
else if (External->Type == ACPI_TYPE_METHOD)
{
/* For methods, we need to save the argument count */
MethodDesc = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD);
MethodDesc->Method.ParamCount = (UINT8) External->Value;
Node->Object = MethodDesc;
}
External = External->Next;
}
}
/*******************************************************************************
*
* FUNCTION: AcpiDmGetExternalMethodCount
*
* PARAMETERS: None
*
* RETURN: The number of control method externals in the external list
*
* DESCRIPTION: Return the number of method externals that have been generated.
* If any control method externals have been found, we must
* re-parse the entire definition block with the new information
* (number of arguments for the methods.) This is limitation of
* AML, we don't know the number of arguments from the control
* method invocation itself.
*
******************************************************************************/
UINT32
AcpiDmGetExternalMethodCount (
void)
{
ACPI_EXTERNAL_LIST *External = AcpiGbl_ExternalList;
UINT32 Count = 0;
while (External)
{
if (External->Type == ACPI_TYPE_METHOD)
{
Count++;
}
External = External->Next;
}
return (Count);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmClearExternalList
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Free the entire External info list
*
******************************************************************************/
void
AcpiDmClearExternalList (
void)
{
ACPI_EXTERNAL_LIST *NextExternal;
while (AcpiGbl_ExternalList)
{
NextExternal = AcpiGbl_ExternalList->Next;
ACPI_FREE (AcpiGbl_ExternalList->Path);
ACPI_FREE (AcpiGbl_ExternalList);
AcpiGbl_ExternalList = NextExternal;
}
}
/*******************************************************************************
*
* FUNCTION: AcpiDmEmitExternals
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Emit an External() ASL statement for each of the externals in
* the global external info list.
*
******************************************************************************/
void
AcpiDmEmitExternals (
void)
{
ACPI_EXTERNAL_LIST *NextExternal;
if (!AcpiGbl_ExternalList)
{
return;
}
/*
* Walk the list of externals (unresolved references)
* found during the AML parsing
*/
while (AcpiGbl_ExternalList)
{
AcpiOsPrintf (" External (%s%s",
AcpiGbl_ExternalList->Path,
AcpiDmGetObjectTypeName (AcpiGbl_ExternalList->Type));
if (AcpiGbl_ExternalList->Type == ACPI_TYPE_METHOD)
{
AcpiOsPrintf (") // %u Arguments\n",
AcpiGbl_ExternalList->Value);
}
else
{
AcpiOsPrintf (")\n");
}
/* Free this external info block and move on to next external */
NextExternal = AcpiGbl_ExternalList->Next;
if (AcpiGbl_ExternalList->Flags & ACPI_IPATH_ALLOCATED)
{
ACPI_FREE (AcpiGbl_ExternalList->InternalPath);
}
ACPI_FREE (AcpiGbl_ExternalList->Path);
ACPI_FREE (AcpiGbl_ExternalList);
AcpiGbl_ExternalList = NextExternal;
}
AcpiOsPrintf ("\n");
}