/******************************************************************************
*
* Module Name: aslcodegen - AML code generation
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2024, 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.
*
*****************************************************************************
*
* Alternatively, you may choose to be licensed under the terms of the
* following license:
*
* 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.
*
* 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 MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* 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 DAMAGE.
*
* Alternatively, you may choose to be licensed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
*****************************************************************************/
#include <contrib/dev/acpica/compiler/aslcompiler.h>
#include "aslcompiler.y.h"
#include <contrib/dev/acpica/include/amlcode.h>
#include <contrib/dev/acpica/include/acconvert.h>
#include <contrib/dev/acpica/include/actbinfo.h>
#define _COMPONENT ACPI_COMPILER
ACPI_MODULE_NAME ("aslcodegen")
/* Local prototypes */
static ACPI_STATUS
CgAmlWriteWalk (
ACPI_PARSE_OBJECT *Op,
UINT32 Level,
void *Context);
static void
CgWriteAmlOpcode (
ACPI_PARSE_OBJECT *Op);
static void
CgWriteTableHeader (
ACPI_PARSE_OBJECT *Op);
static void
CgWriteNode (
ACPI_PARSE_OBJECT *Op);
static void
CgUpdateHeader (
ACPI_PARSE_OBJECT *Op);
static void
CgUpdateCdatHeader (
ACPI_PARSE_OBJECT *Op);
/*******************************************************************************
*
* FUNCTION: CgGenerateAmlOutput
*
* PARAMETERS: None.
*
* RETURN: None
*
* DESCRIPTION: Generate AML code. Currently generates the listing file
* simultaneously.
*
******************************************************************************/
void
CgGenerateAmlOutput (
void)
{
/* Generate the AML output file */
TrWalkParseTree (AslGbl_CurrentDB,
ASL_WALK_VISIT_DOWNWARD | ASL_WALK_VISIT_DB_SEPARATELY,
CgAmlWriteWalk, NULL, NULL);
DbgPrint (ASL_TREE_OUTPUT, ASL_PARSE_TREE_HEADER2);
if (AcpiGbl_CDAT)
{
CgUpdateCdatHeader (AslGbl_CurrentDB);
}
else
{
CgUpdateHeader (AslGbl_CurrentDB);
}
}
/*******************************************************************************
*
* FUNCTION: CgAmlWriteWalk
*
* PARAMETERS: ASL_WALK_CALLBACK
*
* RETURN: Status
*
* DESCRIPTION: Parse tree walk to generate the AML code.
*
******************************************************************************/
static ACPI_STATUS
CgAmlWriteWalk (
ACPI_PARSE_OBJECT *Op,
UINT32 Level,
void *Context)
{
/* Generate the AML for this node */
CgWriteNode (Op);
if (!AslGbl_DebugFlag)
{
return (AE_OK);
}
/* Print header at level 0. Alignment assumes 32-bit pointers */
if (!Level)
{
DbgPrint (ASL_TREE_OUTPUT,
"\nFinal parse tree used for AML output:\n");
DbgPrint (ASL_TREE_OUTPUT, ASL_PARSE_TREE_HEADER2);
}
/* Dump ParseOp name and possible value */
switch (Op->Asl.ParseOpcode)
{
case PARSEOP_NAMESEG:
case PARSEOP_NAMESTRING:
case PARSEOP_METHODCALL:
case PARSEOP_STRING_LITERAL:
UtDumpStringOp (Op, Level);
break;
default:
UtDumpBasicOp (Op, Level);
break;
}
DbgPrint (ASL_TREE_OUTPUT, ASL_PARSE_TREE_DEBUG2,
/* 1 */ (UINT32) Op->Asl.Value.Integer,
/* 2 */ Op->Asl.ParseOpcode,
/* 3 */ Op->Asl.AmlOpcode,
/* 4 */ Op->Asl.AmlOpcodeLength,
/* 5 */ Op->Asl.AmlPkgLenBytes,
/* 6 */ Op->Asl.AmlLength,
/* 7 */ Op->Asl.AmlSubtreeLength,
/* 8 */ Op->Asl.Parent ? Op->Asl.Parent->Asl.AmlSubtreeLength : 0,
/* 9 */ Op,
/* 10 */ Op->Asl.Parent,
/* 11 */ Op->Asl.Child,
/* 12 */ Op->Asl.Next,
/* 13 */ Op->Asl.CompileFlags,
/* 14 */ Op->Asl.AcpiBtype,
/* 15 */ Op->Asl.FinalAmlLength,
/* 16 */ Op->Asl.Column,
/* 17 */ Op->Asl.LineNumber,
/* 18 */ Op->Asl.EndLine,
/* 19 */ Op->Asl.LogicalLineNumber,
/* 20 */ Op->Asl.EndLogicalLine);
TrPrintOpFlags (Op->Asl.CompileFlags, ASL_TREE_OUTPUT);
DbgPrint (ASL_TREE_OUTPUT, "\n");
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: CgLocalWriteAmlData
*
* PARAMETERS: Op - Current parse op
* Buffer - Buffer to write
* Length - Size of data in buffer
*
* RETURN: None
*
* DESCRIPTION: Write a buffer of AML data to the AML output file.
*
******************************************************************************/
void
CgLocalWriteAmlData (
ACPI_PARSE_OBJECT *Op,
void *Buffer,
UINT32 Length)
{
/* Write the raw data to the AML file */
FlWriteFile (ASL_FILE_AML_OUTPUT, Buffer, Length);
/* Update the final AML length for this node (used for listings) */
if (Op)
{
Op->Asl.FinalAmlLength += Length;
}
}
/*******************************************************************************
*
* FUNCTION: CgWriteAmlOpcode
*
* PARAMETERS: Op - Parse node with an AML opcode
*
* RETURN: None.
*
* DESCRIPTION: Write the AML opcode corresponding to a parse node.
*
******************************************************************************/
static void
CgWriteAmlOpcode (
ACPI_PARSE_OBJECT *Op)
{
UINT8 PkgLenFirstByte;
UINT32 i;
union {
UINT16 Opcode;
UINT8 OpcodeBytes[2];
} Aml;
union {
UINT32 Len;
UINT8 LenBytes[4];
} PkgLen;
/* We expect some DEFAULT_ARGs, just ignore them */
if (Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)
{
return;
}
/*
* Before printing the bytecode, generate comment byte codes
* associated with this node.
*/
if (AcpiGbl_CaptureComments)
{
CgWriteAmlComment(Op);
}
switch (Op->Asl.AmlOpcode)
{
case AML_UNASSIGNED_OPCODE:
/* These opcodes should not get here */
printf ("Found a node with an unassigned AML opcode\n");
FlPrintFile (ASL_FILE_STDERR,
"Found a node with an unassigned AML opcode\n");
return;
case AML_INT_RESERVEDFIELD_OP:
/* Special opcodes for within a field definition */
Aml.Opcode = AML_FIELD_OFFSET_OP;
break;
case AML_INT_ACCESSFIELD_OP:
Aml.Opcode = AML_FIELD_ACCESS_OP;
break;
case AML_INT_CONNECTION_OP:
Aml.Opcode = AML_FIELD_CONNECTION_OP;
break;
default:
Aml.Opcode = Op->Asl.AmlOpcode;
break;
}
switch (Aml.Opcode)
{
case AML_PACKAGE_LENGTH:
/* Value is the length to be encoded (Used in field definitions) */
PkgLen.Len = (UINT32) Op->Asl.Value.Integer;
break;
default:
/* Check for two-byte opcode */
if (Aml.Opcode > 0x00FF)
{
/* Write the high byte first */
CgLocalWriteAmlData (Op, &Aml.OpcodeBytes[1], 1);
}
CgLocalWriteAmlData (Op, &Aml.OpcodeBytes[0], 1);
/* Subtreelength doesn't include length of package length bytes */
PkgLen.Len = Op->Asl.AmlSubtreeLength + Op->Asl.AmlPkgLenBytes;
break;
}
/* Does this opcode have an associated "PackageLength" field? */
if (Op->Asl.CompileFlags & OP_AML_PACKAGE)
{
if (Op->Asl.AmlPkgLenBytes == 1)
{
/* Simplest case -- no bytes to follow, just write the count */
CgLocalWriteAmlData (Op, &PkgLen.LenBytes[0], 1);
}
else if (Op->Asl.AmlPkgLenBytes != 0)
{
/*
* Encode the "bytes to follow" in the first byte, top two bits.
* The low-order nybble of the length is in the bottom 4 bits
*/
PkgLenFirstByte = (UINT8)
(((UINT32) (Op->Asl.AmlPkgLenBytes - 1) << 6) |
(PkgLen.LenBytes[0] & 0x0F));
CgLocalWriteAmlData (Op, &PkgLenFirstByte, 1);
/*
* Shift the length over by the 4 bits we just stuffed
* in the first byte
*/
PkgLen.Len >>= 4;
/*
* Now we can write the remaining bytes -
* either 1, 2, or 3 bytes
*/
for (i = 0; i < (UINT32) (Op->Asl.AmlPkgLenBytes - 1); i++)
{
CgLocalWriteAmlData (Op, &PkgLen.LenBytes[i], 1);
}
}
}
switch (Aml.Opcode)
{
case AML_BYTE_OP:
CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 1);
break;
case AML_WORD_OP:
CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 2);
break;
case AML_DWORD_OP:
CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 4);
break;
case AML_QWORD_OP:
CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 8);
break;
case AML_STRING_OP:
CgLocalWriteAmlData (Op, Op->Asl.Value.String, Op->Asl.AmlLength);
break;
default:
/* All data opcodes must appear above */
break;
}
}
/*******************************************************************************
*
* FUNCTION: CgWriteTableHeader
*
* PARAMETERS: Op - The DEFINITIONBLOCK node
*
* RETURN: None
*
* DESCRIPTION: Write a table header corresponding to the DEFINITIONBLOCK
*
* NOTE: Input strings should be validated before this function is invoked.
*
******************************************************************************/
static void
CgWriteTableHeader (
ACPI_PARSE_OBJECT *Op)
{
ACPI_PARSE_OBJECT *Child;
UINT32 CommentLength;
ACPI_COMMENT_NODE *Current;
memset (&AslGbl_TableHeader, 0, sizeof (ACPI_TABLE_HEADER));
/* AML filename */
Child = Op->Asl.Child;
/* Signature */
Child = Child->Asl.Next;
/*
* For ASL-/ASL+ converter: replace the table signature with
* "XXXX" and save the original table signature. This results in an AML
* file with the signature "XXXX". The converter should remove this AML
* file. In the event where this AML file does not get deleted, the
* "XXXX" table signature prevents this AML file from running on the AML
* interpreter.
*/
if (AcpiGbl_CaptureComments)
{
ACPI_COPY_NAMESEG (AcpiGbl_TableSig, Child->Asl.Value.String);
Child->Asl.Value.String = ACPI_SIG_XXXX;
}
ACPI_COPY_NAMESEG (AslGbl_TableHeader.Signature, Child->Asl.Value.String);
/* Revision */
Child = Child->Asl.Next;
AslGbl_TableHeader.Revision = (UINT8) Child->Asl.Value.Integer;
/* Command-line Revision override */
if (AslGbl_RevisionOverride)
{
AslGbl_TableHeader.Revision = AslGbl_RevisionOverride;
}
/* OEMID */
Child = Child->Asl.Next;
memcpy (AslGbl_TableHeader.OemId, Child->Asl.Value.String,
strlen (Child->Asl.Value.String));
/* OEM TableID */
Child = Child->Asl.Next;
memcpy (AslGbl_TableHeader.OemTableId, Child->Asl.Value.String,
strlen (Child->Asl.Value.String));
/* OEM Revision */
Child = Child->Asl.Next;
AslGbl_TableHeader.OemRevision = (UINT32) Child->Asl.Value.Integer;
/* Compiler ID */
ACPI_COPY_NAMESEG (AslGbl_TableHeader.AslCompilerId, ASL_CREATOR_ID);
/* Compiler version */
AslGbl_TableHeader.AslCompilerRevision = ACPI_CA_VERSION;
/* Table length. Checksum zero for now, will rewrite later */
AslGbl_TableHeader.Length = sizeof (ACPI_TABLE_HEADER) +
Op->Asl.AmlSubtreeLength;
/* Calculate the comment lengths for this definition block parseOp */
if (AcpiGbl_CaptureComments)
{
CvDbgPrint ("Calculating comment lengths for %s in write header\n",
Op->Asl.ParseOpName);
/*
* Take the filename without extensions, add 3 for the new extension
* and another 3 for the a908 bytecode and null terminator.
*/
AslGbl_TableHeader.Length += strrchr (AslGbl_ParseTreeRoot->Asl.Filename, '.')
- AslGbl_ParseTreeRoot->Asl.Filename + 1 + 3 + 3;
Op->Asl.AmlSubtreeLength +=
strlen (AslGbl_ParseTreeRoot->Asl.Filename) + 3;
CvDbgPrint (" Length: %u\n",
(UINT32) strlen (AslGbl_ParseTreeRoot->Asl.Filename) + 3);
if (Op->Asl.CommentList)
{
Current = Op->Asl.CommentList;
while (Current)
{
CommentLength = strlen (Current->Comment)+3;
CvDbgPrint ("Length of standard comment): %d\n", CommentLength);
CvDbgPrint (" Comment string: %s\n\n", Current->Comment);
AslGbl_TableHeader.Length += CommentLength;
Op->Asl.AmlSubtreeLength += CommentLength;
Current = Current->Next;
CvDbgPrint (" Length: %u\n", CommentLength);
}
}
if (Op->Asl.CloseBraceComment)
{
CommentLength = strlen (Op->Asl.CloseBraceComment)+3;
CvDbgPrint ("Length of inline comment +3: %d\n", CommentLength);
CvDbgPrint (" Comment string: %s\n\n", Op->Asl.CloseBraceComment);
AslGbl_TableHeader.Length += CommentLength;
Op->Asl.AmlSubtreeLength += CommentLength;
CvDbgPrint (" Length: %u\n", CommentLength);
}
}
AslGbl_TableHeader.Checksum = 0;
Op->Asl.FinalAmlOffset = ftell (AslGbl_Files[ASL_FILE_AML_OUTPUT].Handle);
/* Write entire header and clear the table header global */
CgLocalWriteAmlData (Op, &AslGbl_TableHeader, sizeof (ACPI_TABLE_HEADER));
memset (&AslGbl_TableHeader, 0, sizeof (ACPI_TABLE_HEADER));
}
/*******************************************************************************
*
* FUNCTION: CgUpdateCdatHeader
*
* PARAMETERS: Op - Op for the Definition Block
*
* RETURN: None.
*
* DESCRIPTION: Complete the ACPI table by calculating the checksum and
* re-writing the header for the input definition block
*
******************************************************************************/
static void
CgUpdateCdatHeader (
ACPI_PARSE_OBJECT *Op)
{
signed char Sum;
UINT32 i;
UINT32 Length;
UINT8 FileByte;
UINT8 Checksum;
/* Calculate the checksum over the entire definition block */
Sum = 0;
Length = sizeof (ACPI_TABLE_CDAT) + Op->Asl.AmlSubtreeLength;
FlSeekFile (ASL_FILE_AML_OUTPUT, Op->Asl.FinalAmlOffset);
for (i = 0; i < Length; i++)
{
if (FlReadFile (ASL_FILE_AML_OUTPUT, &FileByte, 1) != AE_OK)
{
AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, NULL,
"Table length is greater than size of the input file");
return;
}
Sum = (signed char) (Sum + FileByte);
}
Checksum = (UINT8) (0 - Sum);
DbgPrint (ASL_DEBUG_OUTPUT, "Computed checksum = %X\n", Checksum);
/* Re-write the checksum byte */
FlSeekFile (ASL_FILE_AML_OUTPUT, Op->Asl.FinalAmlOffset +
ACPI_CDAT_OFFSET (Checksum));
FlWriteFile (ASL_FILE_AML_OUTPUT, &Checksum, 1);
/*
* Seek to the end of the file. This is done to support multiple file
* compilation. Doing this simplifies other parts of the codebase because
* it eliminates the need to seek for a different starting place.
*/
FlSeekFile (ASL_FILE_AML_OUTPUT, Op->Asl.FinalAmlOffset + Length);
}
/*******************************************************************************
*
* FUNCTION: CgUpdateHeader
*
* PARAMETERS: Op - Op for the Definition Block
*
* RETURN: None.
*
* DESCRIPTION: Complete the ACPI table by calculating the checksum and
* re-writing the header for the input definition block
*
******************************************************************************/
static void
CgUpdateHeader (
ACPI_PARSE_OBJECT *Op)
{
signed char Sum;
UINT32 i;
UINT32 Length;
UINT8 FileByte;
UINT8 Checksum;
/* Calculate the checksum over the entire definition block */
Sum = 0;
Length = sizeof (ACPI_TABLE_HEADER) + Op->Asl.AmlSubtreeLength;
FlSeekFile (ASL_FILE_AML_OUTPUT, Op->Asl.FinalAmlOffset);
for (i = 0; i < Length; i++)
{
if (FlReadFile (ASL_FILE_AML_OUTPUT, &FileByte, 1) != AE_OK)
{
AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, NULL,
"Table length is greater than size of the input file");
return;
}
Sum = (signed char) (Sum + FileByte);
}
Checksum = (UINT8) (0 - Sum);
/* Re-write the checksum byte */
FlSeekFile (ASL_FILE_AML_OUTPUT, Op->Asl.FinalAmlOffset +
ACPI_OFFSET (ACPI_TABLE_HEADER, Checksum));
FlWriteFile (ASL_FILE_AML_OUTPUT, &Checksum, 1);
/*
* Seek to the end of the file. This is done to support multiple file
* compilation. Doing this simplifies other parts of the codebase because
* it eliminates the need to seek for a different starting place.
*/
FlSeekFile (ASL_FILE_AML_OUTPUT, Op->Asl.FinalAmlOffset + Length);
}
/*******************************************************************************
*
* FUNCTION: CgWriteNode
*
* PARAMETERS: Op - Parse node to write.
*
* RETURN: None.
*
* DESCRIPTION: Write the AML that corresponds to a parse node.
*
******************************************************************************/
static void
CgWriteNode (
ACPI_PARSE_OBJECT *Op)
{
ASL_RESOURCE_NODE *Rnode;
/* Write all comments here. */
if (AcpiGbl_CaptureComments)
{
CgWriteAmlComment(Op);
}
/* Always check for DEFAULT_ARG and other "Noop" nodes */
/* TBD: this may not be the best place for this check */
if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) ||
(Op->Asl.ParseOpcode == PARSEOP_INCLUDE) ||
(Op->Asl.ParseOpcode == PARSEOP_INCLUDE_END))
{
return;
}
Op->Asl.FinalAmlLength = 0;
switch (Op->Asl.AmlOpcode)
{
case AML_RAW_DATA_BYTE:
case AML_RAW_DATA_WORD:
case AML_RAW_DATA_DWORD:
case AML_RAW_DATA_QWORD:
CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, Op->Asl.AmlLength);
return;
case AML_RAW_DATA_BUFFER:
CgLocalWriteAmlData (Op, Op->Asl.Value.Buffer, Op->Asl.AmlLength);
return;
case AML_RAW_DATA_CHAIN:
Rnode = ACPI_CAST_PTR (ASL_RESOURCE_NODE, Op->Asl.Value.Buffer);
while (Rnode)
{
CgLocalWriteAmlData (Op, Rnode->Buffer, Rnode->BufferLength);
Rnode = Rnode->Next;
}
return;
default:
/* Internal data opcodes must all appear above */
break;
}
switch (Op->Asl.ParseOpcode)
{
case PARSEOP_DEFAULT_ARG:
break;
case PARSEOP_DEFINITION_BLOCK:
CgWriteTableHeader (Op);
if (AcpiGbl_CaptureComments)
{
CgWriteAmlDefBlockComment (Op);
}
break;
case PARSEOP_NAMESEG:
case PARSEOP_NAMESTRING:
case PARSEOP_METHODCALL:
CgLocalWriteAmlData (Op, Op->Asl.Value.String, Op->Asl.AmlLength);
break;
default:
CgWriteAmlOpcode (Op);
break;
}
}