615 lines
18 KiB
C
615 lines
18 KiB
C
/*******************************************************************************
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*
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* Module Name: dmbuffer - AML disassembler, buffer and string support
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*
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******************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#include "acpi.h"
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#include "accommon.h"
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#include "acdisasm.h"
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#include "acparser.h"
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#include "amlcode.h"
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#ifdef ACPI_DISASSEMBLER
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#define _COMPONENT ACPI_CA_DEBUGGER
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ACPI_MODULE_NAME ("dmbuffer")
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/* Local prototypes */
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static void
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AcpiDmUnicode (
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ACPI_PARSE_OBJECT *Op);
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static void
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AcpiDmIsEisaIdElement (
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ACPI_PARSE_OBJECT *Op);
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmDisasmByteList
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*
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* PARAMETERS: Level - Current source code indentation level
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* ByteData - Pointer to the byte list
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* ByteCount - Length of the byte list
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*
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* RETURN: None
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*
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* DESCRIPTION: Dump an AML "ByteList" in Hex format. 8 bytes per line, prefixed
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* with the hex buffer offset.
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*
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******************************************************************************/
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void
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AcpiDmDisasmByteList (
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UINT32 Level,
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UINT8 *ByteData,
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UINT32 ByteCount)
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{
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UINT32 i;
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if (!ByteCount)
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{
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return;
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}
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/* Dump the byte list */
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for (i = 0; i < ByteCount; i++)
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{
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/* New line every 8 bytes */
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if (((i % 8) == 0) && (i < ByteCount))
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{
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if (i > 0)
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{
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AcpiOsPrintf ("\n");
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}
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AcpiDmIndent (Level);
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if (ByteCount > 7)
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{
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AcpiOsPrintf ("/* %04X */ ", i);
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}
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}
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AcpiOsPrintf ("0x%2.2X", (UINT32) ByteData[i]);
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/* Add comma if there are more bytes to display */
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if (i < (ByteCount -1))
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{
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AcpiOsPrintf (", ");
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}
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}
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if (Level)
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{
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AcpiOsPrintf ("\n");
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmByteList
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*
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* PARAMETERS: Info - Parse tree walk info
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* Op - Byte list op
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*
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* RETURN: None
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*
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* DESCRIPTION: Dump a buffer byte list, handling the various types of buffers.
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* Buffer type must be already set in the Op DisasmOpcode.
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*
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******************************************************************************/
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void
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AcpiDmByteList (
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ACPI_OP_WALK_INFO *Info,
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ACPI_PARSE_OBJECT *Op)
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{
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UINT8 *ByteData;
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UINT32 ByteCount;
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ByteData = Op->Named.Data;
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ByteCount = (UINT32) Op->Common.Value.Integer;
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/*
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* The byte list belongs to a buffer, and can be produced by either
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* a ResourceTemplate, Unicode, quoted string, or a plain byte list.
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*/
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switch (Op->Common.Parent->Common.DisasmOpcode)
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{
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case ACPI_DASM_RESOURCE:
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AcpiDmResourceTemplate (Info, Op->Common.Parent, ByteData, ByteCount);
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break;
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case ACPI_DASM_STRING:
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AcpiDmIndent (Info->Level);
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AcpiUtPrintString ((char *) ByteData, ACPI_UINT8_MAX);
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AcpiOsPrintf ("\n");
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break;
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case ACPI_DASM_UNICODE:
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AcpiDmUnicode (Op);
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break;
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case ACPI_DASM_BUFFER:
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default:
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/*
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* Not a resource, string, or unicode string.
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* Just dump the buffer
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*/
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AcpiDmDisasmByteList (Info->Level, ByteData, ByteCount);
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break;
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmIsUnicodeBuffer
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*
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* PARAMETERS: Op - Buffer Object to be examined
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*
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* RETURN: TRUE if buffer contains a UNICODE string
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*
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* DESCRIPTION: Determine if a buffer Op contains a Unicode string
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*
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******************************************************************************/
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BOOLEAN
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AcpiDmIsUnicodeBuffer (
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ACPI_PARSE_OBJECT *Op)
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{
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UINT8 *ByteData;
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UINT32 ByteCount;
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UINT32 WordCount;
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ACPI_PARSE_OBJECT *SizeOp;
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ACPI_PARSE_OBJECT *NextOp;
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UINT32 i;
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/* Buffer size is the buffer argument */
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SizeOp = Op->Common.Value.Arg;
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/* Next, the initializer byte list to examine */
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NextOp = SizeOp->Common.Next;
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if (!NextOp)
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{
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return (FALSE);
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}
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/* Extract the byte list info */
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ByteData = NextOp->Named.Data;
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ByteCount = (UINT32) NextOp->Common.Value.Integer;
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WordCount = ACPI_DIV_2 (ByteCount);
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/*
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* Unicode string must have an even number of bytes and last
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* word must be zero
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*/
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if ((!ByteCount) ||
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(ByteCount < 4) ||
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(ByteCount & 1) ||
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((UINT16 *) (void *) ByteData)[WordCount - 1] != 0)
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{
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return (FALSE);
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}
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/* For each word, 1st byte must be ascii, 2nd byte must be zero */
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for (i = 0; i < (ByteCount - 2); i += 2)
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{
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if ((!ACPI_IS_PRINT (ByteData[i])) ||
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(ByteData[(ACPI_SIZE) i + 1] != 0))
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{
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return (FALSE);
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}
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}
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/* Ignore the Size argument in the disassembly of this buffer op */
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SizeOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
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return (TRUE);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmIsStringBuffer
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*
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* PARAMETERS: Op - Buffer Object to be examined
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*
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* RETURN: TRUE if buffer contains a ASCII string, FALSE otherwise
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*
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* DESCRIPTION: Determine if a buffer Op contains a ASCII string
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*
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******************************************************************************/
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BOOLEAN
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AcpiDmIsStringBuffer (
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ACPI_PARSE_OBJECT *Op)
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{
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UINT8 *ByteData;
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UINT32 ByteCount;
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ACPI_PARSE_OBJECT *SizeOp;
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ACPI_PARSE_OBJECT *NextOp;
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UINT32 i;
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/* Buffer size is the buffer argument */
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SizeOp = Op->Common.Value.Arg;
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/* Next, the initializer byte list to examine */
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NextOp = SizeOp->Common.Next;
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if (!NextOp)
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{
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return (FALSE);
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}
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/* Extract the byte list info */
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ByteData = NextOp->Named.Data;
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ByteCount = (UINT32) NextOp->Common.Value.Integer;
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/* Last byte must be the null terminator */
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if ((!ByteCount) ||
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(ByteCount < 2) ||
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(ByteData[ByteCount-1] != 0))
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{
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return (FALSE);
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}
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for (i = 0; i < (ByteCount - 1); i++)
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{
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/* TBD: allow some escapes (non-ascii chars).
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* they will be handled in the string output routine
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*/
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if (!ACPI_IS_PRINT (ByteData[i]))
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{
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return (FALSE);
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}
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}
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return (TRUE);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmUnicode
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*
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* PARAMETERS: Op - Byte List op containing Unicode string
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*
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* RETURN: None
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*
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* DESCRIPTION: Dump Unicode string as a standard ASCII string. (Remove
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* the extra zero bytes).
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*
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******************************************************************************/
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static void
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AcpiDmUnicode (
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ACPI_PARSE_OBJECT *Op)
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{
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UINT16 *WordData;
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UINT32 WordCount;
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UINT32 i;
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/* Extract the buffer info as a WORD buffer */
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WordData = ACPI_CAST_PTR (UINT16, Op->Named.Data);
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WordCount = ACPI_DIV_2 (((UINT32) Op->Common.Value.Integer));
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AcpiOsPrintf ("\"");
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/* Write every other byte as an ASCII character */
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for (i = 0; i < (WordCount - 1); i++)
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{
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AcpiOsPrintf ("%c", (int) WordData[i]);
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}
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AcpiOsPrintf ("\")");
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmIsEisaIdElement
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*
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* PARAMETERS: Op - Op to be examined
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*
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* RETURN: None
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*
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* DESCRIPTION: Determine if an Op (argument to _HID or _CID) can be converted
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* to an EISA ID.
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*
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******************************************************************************/
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static void
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AcpiDmIsEisaIdElement (
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ACPI_PARSE_OBJECT *Op)
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{
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UINT32 BigEndianId;
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UINT32 Prefix[3];
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UINT32 i;
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/* The parameter must be either a word or a dword */
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if ((Op->Common.AmlOpcode != AML_DWORD_OP) &&
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(Op->Common.AmlOpcode != AML_WORD_OP))
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{
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return;
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}
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/* Swap from little-endian to big-endian to simplify conversion */
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BigEndianId = AcpiUtDwordByteSwap ((UINT32) Op->Common.Value.Integer);
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/* Create the 3 leading ASCII letters */
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Prefix[0] = ((BigEndianId >> 26) & 0x1F) + 0x40;
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Prefix[1] = ((BigEndianId >> 21) & 0x1F) + 0x40;
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Prefix[2] = ((BigEndianId >> 16) & 0x1F) + 0x40;
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/* Verify that all 3 are ascii and alpha */
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for (i = 0; i < 3; i++)
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{
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if (!ACPI_IS_ASCII (Prefix[i]) ||
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!ACPI_IS_ALPHA (Prefix[i]))
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{
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return;
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}
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}
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/* OK - mark this node as convertable to an EISA ID */
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Op->Common.DisasmOpcode = ACPI_DASM_EISAID;
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmIsEisaId
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*
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* PARAMETERS: Op - Op to be examined
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*
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* RETURN: None
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*
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* DESCRIPTION: Determine if a Name() Op can be converted to an EisaId.
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*
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******************************************************************************/
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void
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AcpiDmIsEisaId (
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ACPI_PARSE_OBJECT *Op)
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{
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UINT32 Name;
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ACPI_PARSE_OBJECT *NextOp;
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/* Get the NameSegment */
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Name = AcpiPsGetName (Op);
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if (!Name)
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{
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return;
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}
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NextOp = AcpiPsGetDepthNext (NULL, Op);
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if (!NextOp)
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{
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return;
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}
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/* Check for _HID - has one argument */
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if (ACPI_COMPARE_NAME (&Name, METHOD_NAME__HID))
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{
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AcpiDmIsEisaIdElement (NextOp);
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return;
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}
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/* Exit if not _CID */
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if (!ACPI_COMPARE_NAME (&Name, METHOD_NAME__CID))
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{
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return;
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}
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/* _CID can contain a single argument or a package */
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if (NextOp->Common.AmlOpcode != AML_PACKAGE_OP)
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{
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AcpiDmIsEisaIdElement (NextOp);
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return;
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}
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/* _CID with Package: get the package length */
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NextOp = AcpiPsGetDepthNext (NULL, NextOp);
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/* Don't need to use the length, just walk the peer list */
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NextOp = NextOp->Common.Next;
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while (NextOp)
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{
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AcpiDmIsEisaIdElement (NextOp);
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NextOp = NextOp->Common.Next;
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmEisaId
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*
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* PARAMETERS: EncodedId - Raw encoded EISA ID.
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*
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* RETURN: None
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*
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* DESCRIPTION: Convert an encoded EISAID back to the original ASCII String.
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*
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******************************************************************************/
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void
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AcpiDmEisaId (
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UINT32 EncodedId)
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{
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UINT32 BigEndianId;
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/* Swap from little-endian to big-endian to simplify conversion */
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BigEndianId = AcpiUtDwordByteSwap (EncodedId);
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/* Split to form "AAANNNN" string */
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AcpiOsPrintf ("EisaId (\"%c%c%c%4.4X\")",
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/* Three Alpha characters (AAA), 5 bits each */
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(int) ((BigEndianId >> 26) & 0x1F) + 0x40,
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(int) ((BigEndianId >> 21) & 0x1F) + 0x40,
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(int) ((BigEndianId >> 16) & 0x1F) + 0x40,
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/* Numeric part (NNNN) is simply the lower 16 bits */
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(UINT32) (BigEndianId & 0xFFFF));
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}
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#endif
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