diff options
Diffstat (limited to 'sys/contrib/dev/acpica/compiler/aslcodegen.c')
| -rw-r--r-- | sys/contrib/dev/acpica/compiler/aslcodegen.c | 891 |
1 files changed, 891 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/compiler/aslcodegen.c b/sys/contrib/dev/acpica/compiler/aslcodegen.c new file mode 100644 index 000000000000..684c59f802e9 --- /dev/null +++ b/sys/contrib/dev/acpica/compiler/aslcodegen.c @@ -0,0 +1,891 @@ +/****************************************************************************** + * + * Module Name: aslcodegen - AML code generation + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2025, 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; + } +} |