561 lines
18 KiB
C
561 lines
18 KiB
C
|
|
/******************************************************************************
|
|
*
|
|
* Module Name: exnames - interpreter/scanner name load/execute
|
|
* $Revision: 1.103 $
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2005, 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.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#define __EXNAMES_C__
|
|
|
|
#include <contrib/dev/acpica/acpi.h>
|
|
#include <contrib/dev/acpica/acinterp.h>
|
|
#include <contrib/dev/acpica/amlcode.h>
|
|
|
|
#define _COMPONENT ACPI_EXECUTER
|
|
ACPI_MODULE_NAME ("exnames")
|
|
|
|
/* Local prototypes */
|
|
|
|
static char *
|
|
AcpiExAllocateNameString (
|
|
UINT32 PrefixCount,
|
|
UINT32 NumNameSegs);
|
|
|
|
static ACPI_STATUS
|
|
AcpiExNameSegment (
|
|
UINT8 **InAmlAddress,
|
|
char *NameString);
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiExAllocateNameString
|
|
*
|
|
* PARAMETERS: PrefixCount - Count of parent levels. Special cases:
|
|
* (-1)==root, 0==none
|
|
* NumNameSegs - count of 4-character name segments
|
|
*
|
|
* RETURN: A pointer to the allocated string segment. This segment must
|
|
* be deleted by the caller.
|
|
*
|
|
* DESCRIPTION: Allocate a buffer for a name string. Ensure allocated name
|
|
* string is long enough, and set up prefix if any.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static char *
|
|
AcpiExAllocateNameString (
|
|
UINT32 PrefixCount,
|
|
UINT32 NumNameSegs)
|
|
{
|
|
char *TempPtr;
|
|
char *NameString;
|
|
UINT32 SizeNeeded;
|
|
|
|
ACPI_FUNCTION_TRACE ("ExAllocateNameString");
|
|
|
|
|
|
/*
|
|
* Allow room for all \ and ^ prefixes, all segments and a MultiNamePrefix.
|
|
* Also, one byte for the null terminator.
|
|
* This may actually be somewhat longer than needed.
|
|
*/
|
|
if (PrefixCount == ACPI_UINT32_MAX)
|
|
{
|
|
/* Special case for root */
|
|
|
|
SizeNeeded = 1 + (ACPI_NAME_SIZE * NumNameSegs) + 2 + 1;
|
|
}
|
|
else
|
|
{
|
|
SizeNeeded = PrefixCount + (ACPI_NAME_SIZE * NumNameSegs) + 2 + 1;
|
|
}
|
|
|
|
/*
|
|
* Allocate a buffer for the name.
|
|
* This buffer must be deleted by the caller!
|
|
*/
|
|
NameString = ACPI_MEM_ALLOCATE (SizeNeeded);
|
|
if (!NameString)
|
|
{
|
|
ACPI_REPORT_ERROR ((
|
|
"ExAllocateNameString: Could not allocate size %d\n", SizeNeeded));
|
|
return_PTR (NULL);
|
|
}
|
|
|
|
TempPtr = NameString;
|
|
|
|
/* Set up Root or Parent prefixes if needed */
|
|
|
|
if (PrefixCount == ACPI_UINT32_MAX)
|
|
{
|
|
*TempPtr++ = AML_ROOT_PREFIX;
|
|
}
|
|
else
|
|
{
|
|
while (PrefixCount--)
|
|
{
|
|
*TempPtr++ = AML_PARENT_PREFIX;
|
|
}
|
|
}
|
|
|
|
|
|
/* Set up Dual or Multi prefixes if needed */
|
|
|
|
if (NumNameSegs > 2)
|
|
{
|
|
/* Set up multi prefixes */
|
|
|
|
*TempPtr++ = AML_MULTI_NAME_PREFIX_OP;
|
|
*TempPtr++ = (char) NumNameSegs;
|
|
}
|
|
else if (2 == NumNameSegs)
|
|
{
|
|
/* Set up dual prefixes */
|
|
|
|
*TempPtr++ = AML_DUAL_NAME_PREFIX;
|
|
}
|
|
|
|
/*
|
|
* Terminate string following prefixes. AcpiExNameSegment() will
|
|
* append the segment(s)
|
|
*/
|
|
*TempPtr = 0;
|
|
|
|
return_PTR (NameString);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiExNameSegment
|
|
*
|
|
* PARAMETERS: InAmlAddress - Pointer to the name in the AML code
|
|
* NameString - Where to return the name. The name is appended
|
|
* to any existing string to form a namepath
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Extract an ACPI name (4 bytes) from the AML byte stream
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
AcpiExNameSegment (
|
|
UINT8 **InAmlAddress,
|
|
char *NameString)
|
|
{
|
|
char *AmlAddress = (void *) *InAmlAddress;
|
|
ACPI_STATUS Status = AE_OK;
|
|
UINT32 Index;
|
|
char CharBuf[5];
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("ExNameSegment");
|
|
|
|
|
|
/*
|
|
* If first character is a digit, then we know that we aren't looking at a
|
|
* valid name segment
|
|
*/
|
|
CharBuf[0] = *AmlAddress;
|
|
|
|
if ('0' <= CharBuf[0] && CharBuf[0] <= '9')
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "leading digit: %c\n", CharBuf[0]));
|
|
return_ACPI_STATUS (AE_CTRL_PENDING);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "Bytes from stream:\n"));
|
|
|
|
for (Index = 0;
|
|
(Index < ACPI_NAME_SIZE) && (AcpiUtValidAcpiCharacter (*AmlAddress));
|
|
Index++)
|
|
{
|
|
CharBuf[Index] = *AmlAddress++;
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "%c\n", CharBuf[Index]));
|
|
}
|
|
|
|
|
|
/* Valid name segment */
|
|
|
|
if (Index == 4)
|
|
{
|
|
/* Found 4 valid characters */
|
|
|
|
CharBuf[4] = '\0';
|
|
|
|
if (NameString)
|
|
{
|
|
ACPI_STRCAT (NameString, CharBuf);
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
|
|
"Appended to - %s\n", NameString));
|
|
}
|
|
else
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
|
|
"No Name string - %s\n", CharBuf));
|
|
}
|
|
}
|
|
else if (Index == 0)
|
|
{
|
|
/*
|
|
* First character was not a valid name character,
|
|
* so we are looking at something other than a name.
|
|
*/
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
|
|
"Leading character is not alpha: %02Xh (not a name)\n",
|
|
CharBuf[0]));
|
|
Status = AE_CTRL_PENDING;
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Segment started with one or more valid characters, but fewer than
|
|
* the required 4
|
|
*/
|
|
Status = AE_AML_BAD_NAME;
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
|
"Bad character %02x in name, at %p\n",
|
|
*AmlAddress, AmlAddress));
|
|
}
|
|
|
|
*InAmlAddress = (UINT8 *) AmlAddress;
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiExGetNameString
|
|
*
|
|
* PARAMETERS: DataType - Object type to be associated with this
|
|
* name
|
|
* InAmlAddress - Pointer to the namestring in the AML code
|
|
* OutNameString - Where the namestring is returned
|
|
* OutNameLength - Length of the returned string
|
|
*
|
|
* RETURN: Status, namestring and length
|
|
*
|
|
* DESCRIPTION: Extract a full namepath from the AML byte stream,
|
|
* including any prefixes.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiExGetNameString (
|
|
ACPI_OBJECT_TYPE DataType,
|
|
UINT8 *InAmlAddress,
|
|
char **OutNameString,
|
|
UINT32 *OutNameLength)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
UINT8 *AmlAddress = InAmlAddress;
|
|
char *NameString = NULL;
|
|
UINT32 NumSegments;
|
|
UINT32 PrefixCount = 0;
|
|
BOOLEAN HasPrefix = FALSE;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR ("ExGetNameString", AmlAddress);
|
|
|
|
|
|
if (ACPI_TYPE_LOCAL_REGION_FIELD == DataType ||
|
|
ACPI_TYPE_LOCAL_BANK_FIELD == DataType ||
|
|
ACPI_TYPE_LOCAL_INDEX_FIELD == DataType)
|
|
{
|
|
/* Disallow prefixes for types associated with FieldUnit names */
|
|
|
|
NameString = AcpiExAllocateNameString (0, 1);
|
|
if (!NameString)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
}
|
|
else
|
|
{
|
|
Status = AcpiExNameSegment (&AmlAddress, NameString);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* DataType is not a field name.
|
|
* Examine first character of name for root or parent prefix operators
|
|
*/
|
|
switch (*AmlAddress)
|
|
{
|
|
case AML_ROOT_PREFIX:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "RootPrefix(\\) at %p\n",
|
|
AmlAddress));
|
|
|
|
/*
|
|
* Remember that we have a RootPrefix --
|
|
* see comment in AcpiExAllocateNameString()
|
|
*/
|
|
AmlAddress++;
|
|
PrefixCount = ACPI_UINT32_MAX;
|
|
HasPrefix = TRUE;
|
|
break;
|
|
|
|
|
|
case AML_PARENT_PREFIX:
|
|
|
|
/* Increment past possibly multiple parent prefixes */
|
|
|
|
do
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "ParentPrefix (^) at %p\n",
|
|
AmlAddress));
|
|
|
|
AmlAddress++;
|
|
PrefixCount++;
|
|
|
|
} while (*AmlAddress == AML_PARENT_PREFIX);
|
|
|
|
HasPrefix = TRUE;
|
|
break;
|
|
|
|
|
|
default:
|
|
|
|
/* Not a prefix character */
|
|
|
|
break;
|
|
}
|
|
|
|
/* Examine first character of name for name segment prefix operator */
|
|
|
|
switch (*AmlAddress)
|
|
{
|
|
case AML_DUAL_NAME_PREFIX:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "DualNamePrefix at %p\n",
|
|
AmlAddress));
|
|
|
|
AmlAddress++;
|
|
NameString = AcpiExAllocateNameString (PrefixCount, 2);
|
|
if (!NameString)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
break;
|
|
}
|
|
|
|
/* Indicate that we processed a prefix */
|
|
|
|
HasPrefix = TRUE;
|
|
|
|
Status = AcpiExNameSegment (&AmlAddress, NameString);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
Status = AcpiExNameSegment (&AmlAddress, NameString);
|
|
}
|
|
break;
|
|
|
|
|
|
case AML_MULTI_NAME_PREFIX_OP:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "MultiNamePrefix at %p\n",
|
|
AmlAddress));
|
|
|
|
/* Fetch count of segments remaining in name path */
|
|
|
|
AmlAddress++;
|
|
NumSegments = *AmlAddress;
|
|
|
|
NameString = AcpiExAllocateNameString (PrefixCount, NumSegments);
|
|
if (!NameString)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
break;
|
|
}
|
|
|
|
/* Indicate that we processed a prefix */
|
|
|
|
AmlAddress++;
|
|
HasPrefix = TRUE;
|
|
|
|
while (NumSegments &&
|
|
(Status = AcpiExNameSegment (&AmlAddress, NameString)) ==
|
|
AE_OK)
|
|
{
|
|
NumSegments--;
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
case 0:
|
|
|
|
/* NullName valid as of 8-12-98 ASL/AML Grammar Update */
|
|
|
|
if (PrefixCount == ACPI_UINT32_MAX)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
|
|
"NameSeg is \"\\\" followed by NULL\n"));
|
|
}
|
|
|
|
/* Consume the NULL byte */
|
|
|
|
AmlAddress++;
|
|
NameString = AcpiExAllocateNameString (PrefixCount, 0);
|
|
if (!NameString)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
default:
|
|
|
|
/* Name segment string */
|
|
|
|
NameString = AcpiExAllocateNameString (PrefixCount, 1);
|
|
if (!NameString)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
break;
|
|
}
|
|
|
|
Status = AcpiExNameSegment (&AmlAddress, NameString);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (AE_CTRL_PENDING == Status && HasPrefix)
|
|
{
|
|
/* Ran out of segments after processing a prefix */
|
|
|
|
ACPI_REPORT_ERROR (
|
|
("ExDoName: Malformed Name at %p\n", NameString));
|
|
Status = AE_AML_BAD_NAME;
|
|
}
|
|
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
if (NameString)
|
|
{
|
|
ACPI_MEM_FREE (NameString);
|
|
}
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
*OutNameString = NameString;
|
|
*OutNameLength = (UINT32) (AmlAddress - InAmlAddress);
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|