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Diffstat (limited to 'source/compiler/aslcodegen.c')
| -rw-r--r-- | source/compiler/aslcodegen.c | 593 |
1 files changed, 593 insertions, 0 deletions
diff --git a/source/compiler/aslcodegen.c b/source/compiler/aslcodegen.c new file mode 100644 index 0000000..825dd19 --- /dev/null +++ b/source/compiler/aslcodegen.c @@ -0,0 +1,593 @@ + +/****************************************************************************** + * + * Module Name: aslcodegen - AML code generation + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2012, Intel Corp. + * All rights reserved. + * + * 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. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * 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 MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES. + */ + + +#include "aslcompiler.h" +#include "aslcompiler.y.h" +#include "amlcode.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 +CgLocalWriteAmlData ( + ACPI_PARSE_OBJECT *Op, + void *Buffer, + UINT32 Length); + +static void +CgWriteAmlOpcode ( + ACPI_PARSE_OBJECT *Op); + +static void +CgWriteTableHeader ( + ACPI_PARSE_OBJECT *Op); + +static void +CgCloseTable ( + void); + +static void +CgWriteNode ( + ACPI_PARSE_OBJECT *Op); + + +/******************************************************************************* + * + * FUNCTION: CgGenerateAmlOutput + * + * PARAMETERS: None. + * + * RETURN: None + * + * DESCRIPTION: Generate AML code. Currently generates the listing file + * simultaneously. + * + ******************************************************************************/ + +void +CgGenerateAmlOutput ( + void) +{ + + DbgPrint (ASL_DEBUG_OUTPUT, "\nWriting AML\n\n"); + + /* Generate the AML output file */ + + FlSeekFile (ASL_FILE_SOURCE_OUTPUT, 0); + Gbl_SourceLine = 0; + Gbl_NextError = Gbl_ErrorLog; + + TrWalkParseTree (RootNode, ASL_WALK_VISIT_DOWNWARD, + CgAmlWriteWalk, NULL, NULL); + CgCloseTable (); +} + + +/******************************************************************************* + * + * 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) +{ + + /* + * Print header at level 0. Alignment assumes 32-bit pointers + */ + if (!Level) + { + DbgPrint (ASL_TREE_OUTPUT, + "Final parse tree used for AML output:\n"); + DbgPrint (ASL_TREE_OUTPUT, + "%*s Value P_Op A_Op OpLen PByts Len SubLen PSubLen OpPtr Child Parent Flags AcTyp Final Col L\n", + 76, " "); + } + + /* Debug output */ + + DbgPrint (ASL_TREE_OUTPUT, + "%5.5d [%2d]", Op->Asl.LogicalLineNumber, Level); + UtPrintFormattedName (Op->Asl.ParseOpcode, Level); + + if (Op->Asl.ParseOpcode == PARSEOP_NAMESEG || + Op->Asl.ParseOpcode == PARSEOP_NAMESTRING || + Op->Asl.ParseOpcode == PARSEOP_METHODCALL) + { + DbgPrint (ASL_TREE_OUTPUT, + "%10.32s ", Op->Asl.ExternalName); + } + else + { + DbgPrint (ASL_TREE_OUTPUT, " "); + } + + DbgPrint (ASL_TREE_OUTPUT, + "%08X %04X %04X %01X %04X %04X %04X %04X %08X %08X %08X %08X %08X %04X %02d %02d\n", + /* 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.Child, + /* 11 */ Op->Asl.Parent, + /* 12 */ Op->Asl.CompileFlags, + /* 13 */ Op->Asl.AcpiBtype, + /* 14 */ Op->Asl.FinalAmlLength, + /* 15 */ Op->Asl.Column, + /* 16 */ Op->Asl.LineNumber); + + /* Generate the AML for this node */ + + CgWriteNode (Op); + 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. + * + ******************************************************************************/ + +static 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; + } + + switch (Op->Asl.AmlOpcode) + { + case AML_UNASSIGNED_OPCODE: + + /* These opcodes should not get here */ + + printf ("Found a node with an unassigned AML opcode\n"); + fprintf (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 & NODE_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 + * + ******************************************************************************/ + +static void +CgWriteTableHeader ( + ACPI_PARSE_OBJECT *Op) +{ + ACPI_PARSE_OBJECT *Child; + + + /* AML filename */ + + Child = Op->Asl.Child; + + /* Signature */ + + Child = Child->Asl.Next; + strncpy (TableHeader.Signature, Child->Asl.Value.String, 4); + + /* Revision */ + + Child = Child->Asl.Next; + TableHeader.Revision = (UINT8) Child->Asl.Value.Integer; + + /* Command-line Revision override */ + + if (Gbl_RevisionOverride) + { + TableHeader.Revision = Gbl_RevisionOverride; + } + + /* OEMID */ + + Child = Child->Asl.Next; + strncpy (TableHeader.OemId, Child->Asl.Value.String, 6); + + /* OEM TableID */ + + Child = Child->Asl.Next; + strncpy (TableHeader.OemTableId, Child->Asl.Value.String, 8); + + /* OEM Revision */ + + Child = Child->Asl.Next; + TableHeader.OemRevision = (UINT32) Child->Asl.Value.Integer; + + /* Compiler ID */ + + strncpy (TableHeader.AslCompilerId, ASL_CREATOR_ID, 4); + + /* Compiler version */ + + TableHeader.AslCompilerRevision = ASL_REVISION; + + /* Table length. Checksum zero for now, will rewrite later */ + + TableHeader.Length = Gbl_TableLength; + TableHeader.Checksum = 0; + + CgLocalWriteAmlData (Op, &TableHeader, sizeof (ACPI_TABLE_HEADER)); +} + + +/******************************************************************************* + * + * FUNCTION: CgCloseTable + * + * PARAMETERS: None. + * + * RETURN: None. + * + * DESCRIPTION: Complete the ACPI table by calculating the checksum and + * re-writing the header. + * + ******************************************************************************/ + +static void +CgCloseTable ( + void) +{ + signed char Sum; + UINT8 FileByte; + + + FlSeekFile (ASL_FILE_AML_OUTPUT, 0); + Sum = 0; + + /* Calculate the checksum over the entire file */ + + while (FlReadFile (ASL_FILE_AML_OUTPUT, &FileByte, 1) == AE_OK) + { + Sum = (signed char) (Sum + FileByte); + } + + /* Re-write the table header with the checksum */ + + TableHeader.Checksum = (UINT8) (0 - Sum); + + FlSeekFile (ASL_FILE_AML_OUTPUT, 0); + CgLocalWriteAmlData (NULL, &TableHeader, sizeof (ACPI_TABLE_HEADER)); +} + + +/******************************************************************************* + * + * 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; + + + /* 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_EXTERNAL) || + (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_DEFINITIONBLOCK: + + CgWriteTableHeader (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; + } +} + + |
