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4415be7fd2
acpica/source/components/executer/exnames.c
aystarik 4415be7fd2 New AML exception codes 
date	2000.03.29.22.07.00;	author rmoore1;	state Exp;
2005-06-29 17:26:29 +00:00

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/******************************************************************************
*
* Module Name: isnames - interpreter/scanner name load/execute
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999, 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 __ISNAMES_C__
#include <acpi.h>
#include <interp.h>
#include <amlcode.h>
#include <namesp.h>
#define _COMPONENT INTERPRETER
MODULE_NAME ("isnames");
#define PKG_Type1 64 /* or 0x40 Max encoding size = 0x3F */
#define PKG_Type2 16384 /* or 0x4000 Max encoding size = 0xFFF */
#define PKG_Type3 4194304 /* or 0x400000 Max encoding size = 0xFFFFF */
#define PKG_Type4 1073741824 /* or 0x40000000 Max encoding size = 0xFFFFFFF */
/*****************************************************************************
*
* FUNCTION: AmlAllocateNameString
*
* 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: Ensure allocated name string is long enough,
* and set up prefix if any.
*
****************************************************************************/
char *
AmlAllocateNameString (
INT32 PrefixCount,
INT32 NumNameSegs)
{
char *TempPtr;
char *NameString;
INT32 SizeNeeded;
FUNCTION_TRACE ("AmlAllocateNameString");
/*
* Allow room for all \ and ^ prefixes, all segments, and a MultiNamePrefix.
* This may actually be somewhat longer than needed.
*/
if (PrefixCount < 0)
{
SizeNeeded = 1 /* root */ + (ACPI_NAME_SIZE * NumNameSegs) + 2 +1; /* zero terminate */
}
else
{
SizeNeeded = PrefixCount + (ACPI_NAME_SIZE * NumNameSegs) + 2 +1; /* zero terminate */
}
/*
* Allocate a buffer for the name.
* This buffer must be deleted by the caller!
*/
NameString = CmAllocate ((ACPI_SIZE) SizeNeeded);
if (!NameString)
{
/* Allocation failure */
REPORT_ERROR ("AmlAllocateNameString: name allocation failure");
return_VALUE (NULL);
}
TempPtr = NameString;
/* Set up Root or Parent prefixes if needed */
if (PrefixCount < 0)
{
*TempPtr++ = AML_RootPrefix;
}
else
{
while (PrefixCount--)
{
*TempPtr++ = AML_ParentPrefix;
}
}
/* Set up Dual or Multi prefixes if needed */
if (NumNameSegs > 2)
{
/* Set up multi prefixes */
*TempPtr++ = AML_MultiNamePrefixOp;
*TempPtr++ = (char) NumNameSegs;
}
else if (2 == NumNameSegs)
{
/* Set up dual prefixes */
*TempPtr++ = AML_DualNamePrefix;
}
/* Terminate string following prefixes. AmlExecNameSegment() will append the segment(s) */
*TempPtr = 0;
return_VALUE (NameString);
}
/*****************************************************************************
*
* FUNCTION: AmlGoodName
*
* PARAMETERS: Character - The character to be examined
*
* RETURN: 1 if Character may appear in a name, else 0
*
* DESCRIPTION: Check for a printable character
*
****************************************************************************/
BOOLEAN
AmlGoodName (
UINT32 Name)
{
char *NamePtr = (char *) &Name;
UINT32 i;
for (i = 0; i < ACPI_NAME_SIZE; i++)
{
if (!((NamePtr[i] == '_') ||
(NamePtr[i] >= 'A' && NamePtr[i] <= 'Z') ||
(NamePtr[i] >= '0' && NamePtr[i] <= '9')))
{
return FALSE;
}
}
return TRUE;
}
/*****************************************************************************
*
* FUNCTION: AmlGoodChar
*
* PARAMETERS: Character - The character to be examined
*
* RETURN: 1 if Character may appear in a name, else 0
*
* DESCRIPTION: Check for a printable character
*
****************************************************************************/
INT32
AmlGoodChar (
INT32 Character)
{
return ((Character == '_') ||
(Character >= 'A' && Character <= 'Z') ||
(Character >= '0' && Character <= '9'));
}
/*****************************************************************************
*
* FUNCTION: AmlDecodePackageLength
*
* PARAMETERS: LastPkgLen - latest value decoded by DoPkgLength() for
* most recently examined package or field
*
* RETURN: Number of bytes contained in package length encoding
*
* DESCRIPTION: Decodes the Package Length. Upper 2 bits are are used to
* tell if type 1, 2, 3, or 4.
* 0x3F = Max 1 byte encoding,
* 0xFFF = Max 2 byte encoding,
* 0xFFFFF = Max 3 Byte encoding,
* 0xFFFFFFFFF = Max 4 Byte encoding.
*
****************************************************************************/
INT32
AmlDecodePackageLength (
INT32 LastPkgLen)
{
INT32 NumBytes = 0;
FUNCTION_TRACE ("AmlDecodePackageLength");
if (LastPkgLen < PKG_Type1)
{
NumBytes = 1;
}
else if (LastPkgLen < PKG_Type2)
{
NumBytes = 2;
}
else if (LastPkgLen < PKG_Type3)
{
NumBytes = 3;
}
else if (LastPkgLen < PKG_Type4)
{
NumBytes = 4;
}
return_VALUE (NumBytes);
}
/*****************************************************************************
*
* FUNCTION: AmlExecNameSegment
*
* PARAMETERS: InterpreterMode - Current running mode (load1/Load2/Exec)
*
* RETURN: Status
*
* DESCRIPTION: Execute a name segment (4 bytes)
*
****************************************************************************/
ACPI_STATUS
AmlExecNameSegment (
UINT8 **InAmlAddress,
char *NameString)
{
UINT8 *AmlAddress = *InAmlAddress;
ACPI_STATUS Status = AE_OK;
INT32 Index;
char CharBuf[5];
FUNCTION_TRACE ("AmlExecNameSegment");
/* If first character is a digit, we aren't looking at a valid name segment */
CharBuf[0] = *AmlAddress;
if ('0' <= CharBuf[0] && CharBuf[0] <= '9')
{
DEBUG_PRINT (ACPI_ERROR, ("AmlExecNameSegment: leading digit: %c\n", CharBuf[0]));
return_ACPI_STATUS (AE_PENDING);
}
DEBUG_PRINT (TRACE_LOAD, ("AmlExecNameSegment: Bytes from stream:\n"));
for (Index = 4; Index > 0 && AmlGoodChar (*AmlAddress); --Index)
{
CharBuf[4 - Index] = *AmlAddress++;
DEBUG_PRINT (TRACE_LOAD, ("%c\n", CharBuf[4 - Index]));
}
/* Valid name segment */
if (0 == Index)
{
/* Found 4 valid characters */
CharBuf[4] = '\0';
if (NameString)
{
STRCAT (NameString, CharBuf);
DEBUG_PRINT (TRACE_NAMES, ("AmlExecNameSegment: Appended to - %s \n", NameString));
}
else
{
DEBUG_PRINT (TRACE_NAMES, ("AmlExecNameSegment: No Name string - %s \n", CharBuf));
}
}
else if (4 == Index)
{
/*
* First character was not a valid name character,
* so we are looking at something other than a name.
*/
DEBUG_PRINT (ACPI_INFO, ("AmlExecNameSegment: Leading char not alpha: %02Xh (not a name)\n", CharBuf[0]));
Status = AE_PENDING;
}
else
{
/* Segment started with one or more valid characters, but fewer than 4 */
Status = AE_AML_BAD_NAME;
DEBUG_PRINT (ACPI_ERROR, ("AmlExecNameSegment: Bad char %02x in name, at %p\n", *AmlAddress, AmlAddress));
}
DEBUG_PRINT (TRACE_EXEC, ("Leave AmlExecNameSegment %s \n", CmFormatException (Status)));
*InAmlAddress = AmlAddress;
return_ACPI_STATUS (Status);
}
/*****************************************************************************
*
* FUNCTION: AmlGetNameString
*
* PARAMETERS: DataType - Data type to be associated with this name
*
* RETURN: Status
*
* DESCRIPTION: Get a name, including any prefixes.
*
****************************************************************************/
ACPI_STATUS
AmlGetNameString (
ACPI_OBJECT_TYPE DataType,
UINT8 *InAmlAddress,
char **OutNameString,
UINT32 *OutNameLength)
{
ACPI_STATUS Status = AE_OK;
UINT8 *AmlAddress = InAmlAddress;
char *NameString = NULL;
INT32 NumSegments;
INT32 PrefixCount = 0;
UINT8 Prefix = 0;
FUNCTION_TRACE_PTR ("AmlGetNameString", AmlAddress);
if (INTERNAL_TYPE_DefField == DataType ||
INTERNAL_TYPE_BankField == DataType ||
INTERNAL_TYPE_IndexField == DataType)
{
/* Disallow prefixes for types associated with field names */
NameString = AmlAllocateNameString (0, 1);
if (!NameString)
{
Status = AE_NO_MEMORY;
}
else
{
Status = AmlExecNameSegment (&AmlAddress, NameString);
}
}
else
{
/* DataType is not a field name */
switch (*AmlAddress)
{
/* Examine first character of name for root or parent prefix operators */
case AML_RootPrefix:
Prefix = *AmlAddress++;
DEBUG_PRINT (TRACE_LOAD, ("RootPrefix: %x\n", Prefix));
/*
* Remember that we have a RootPrefix --
* see comment in AmlAllocateNameString()
*/
PrefixCount = -1;
break;
case AML_ParentPrefix:
do
{
Prefix = *AmlAddress++;
DEBUG_PRINT (TRACE_LOAD, ("ParentPrefix: %x\n", Prefix));
++PrefixCount;
} while (*AmlAddress == AML_ParentPrefix);
break;
default:
break;
}
switch (*AmlAddress)
{
/* Examine first character of name for name segment prefix operator */
case AML_DualNamePrefix:
Prefix = *AmlAddress++;
DEBUG_PRINT (TRACE_LOAD, ("DualNamePrefix: %x\n", Prefix));
NameString = AmlAllocateNameString (PrefixCount, 2);
if (!NameString)
{
Status = AE_NO_MEMORY;
break;
}
/* Ensure PrefixCount != 0 to remember processing a prefix */
PrefixCount += 2;
if ((Status = AmlExecNameSegment (&AmlAddress, NameString)) == AE_OK)
{
Status = AmlExecNameSegment (&AmlAddress, NameString);
}
break;
case AML_MultiNamePrefixOp:
Prefix = *AmlAddress++;
DEBUG_PRINT (TRACE_LOAD, ("MultiNamePrefix: %x\n", Prefix));
NumSegments = *AmlAddress++; /* fetch count of segments */
NameString = AmlAllocateNameString (PrefixCount, NumSegments);
if (!NameString)
{
Status = AE_NO_MEMORY;
break;
}
/* Ensure PrefixCount != 0 to remember processing a prefix */
PrefixCount += 2;
while (NumSegments && (Status = AmlExecNameSegment (&AmlAddress, NameString)) == AE_OK)
{
--NumSegments;
}
break;
case 0:
/* NullName valid as of 8-12-98 ASL/AML Grammar Update */
if (-1 == PrefixCount)
{
/* RootPrefix followed by NULL */
DEBUG_PRINT (TRACE_EXEC,
("AmlDoName: NameSeg is \"\\\" followed by NULL\n"));
}
AmlAddress++; /* consume NULL byte */
NameString = AmlAllocateNameString (PrefixCount, 0);
if (!NameString)
{
Status = AE_NO_MEMORY;
break;
}
break;
default:
/* Name segment string */
NameString = AmlAllocateNameString (PrefixCount, 1);
if (!NameString)
{
Status = AE_NO_MEMORY;
break;
}
Status = AmlExecNameSegment (&AmlAddress, NameString);
break;
} /* Switch (PeekOp ()) */
}
if (AE_PENDING == Status && PrefixCount != 0)
{
/* Ran out of segments after processing a prefix */
DEBUG_PRINT (ACPI_ERROR, ("AmlDoName: Malformed Name\n"));
REPORT_ERROR ("Ran out of segments after processing a prefix");
Status = AE_AML_BAD_NAME;
}
*OutNameString = NameString;
*OutNameLength = (UINT32) (AmlAddress - InAmlAddress);
return_ACPI_STATUS (Status);
}
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