594 lines
15 KiB
C
594 lines
15 KiB
C
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/******************************************************************************
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*
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* Module Name: aslcodegen - AML code generation
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2012, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <contrib/dev/acpica/compiler/aslcompiler.h>
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#include "aslcompiler.y.h"
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#include <contrib/dev/acpica/include/amlcode.h>
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#define _COMPONENT ACPI_COMPILER
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ACPI_MODULE_NAME ("aslcodegen")
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/* Local prototypes */
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static ACPI_STATUS
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CgAmlWriteWalk (
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ACPI_PARSE_OBJECT *Op,
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UINT32 Level,
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void *Context);
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static void
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CgLocalWriteAmlData (
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ACPI_PARSE_OBJECT *Op,
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void *Buffer,
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UINT32 Length);
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static void
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CgWriteAmlOpcode (
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ACPI_PARSE_OBJECT *Op);
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static void
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CgWriteTableHeader (
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ACPI_PARSE_OBJECT *Op);
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static void
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CgCloseTable (
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void);
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static void
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CgWriteNode (
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ACPI_PARSE_OBJECT *Op);
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/*******************************************************************************
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*
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* FUNCTION: CgGenerateAmlOutput
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*
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* PARAMETERS: None.
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*
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* RETURN: None
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*
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* DESCRIPTION: Generate AML code. Currently generates the listing file
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* simultaneously.
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*
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******************************************************************************/
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void
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CgGenerateAmlOutput (
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void)
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{
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DbgPrint (ASL_DEBUG_OUTPUT, "\nWriting AML\n\n");
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/* Generate the AML output file */
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FlSeekFile (ASL_FILE_SOURCE_OUTPUT, 0);
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Gbl_SourceLine = 0;
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Gbl_NextError = Gbl_ErrorLog;
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TrWalkParseTree (RootNode, ASL_WALK_VISIT_DOWNWARD,
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CgAmlWriteWalk, NULL, NULL);
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CgCloseTable ();
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}
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/*******************************************************************************
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*
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* FUNCTION: CgAmlWriteWalk
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*
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* PARAMETERS: ASL_WALK_CALLBACK
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*
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* RETURN: Status
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*
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* DESCRIPTION: Parse tree walk to generate the AML code.
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*
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******************************************************************************/
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static ACPI_STATUS
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CgAmlWriteWalk (
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ACPI_PARSE_OBJECT *Op,
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UINT32 Level,
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void *Context)
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{
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/*
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* Print header at level 0. Alignment assumes 32-bit pointers
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*/
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if (!Level)
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{
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DbgPrint (ASL_TREE_OUTPUT,
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"Final parse tree used for AML output:\n");
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DbgPrint (ASL_TREE_OUTPUT,
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"%*s Value P_Op A_Op OpLen PByts Len SubLen PSubLen OpPtr Child Parent Flags AcTyp Final Col L\n",
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76, " ");
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}
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/* Debug output */
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DbgPrint (ASL_TREE_OUTPUT,
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"%5.5d [%2d]", Op->Asl.LogicalLineNumber, Level);
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UtPrintFormattedName (Op->Asl.ParseOpcode, Level);
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if (Op->Asl.ParseOpcode == PARSEOP_NAMESEG ||
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Op->Asl.ParseOpcode == PARSEOP_NAMESTRING ||
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Op->Asl.ParseOpcode == PARSEOP_METHODCALL)
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{
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DbgPrint (ASL_TREE_OUTPUT,
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"%10.32s ", Op->Asl.ExternalName);
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}
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else
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{
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DbgPrint (ASL_TREE_OUTPUT, " ");
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}
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DbgPrint (ASL_TREE_OUTPUT,
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"%08X %04X %04X %01X %04X %04X %04X %04X %08X %08X %08X %08X %08X %04X %02d %02d\n",
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/* 1 */ (UINT32) Op->Asl.Value.Integer,
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/* 2 */ Op->Asl.ParseOpcode,
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/* 3 */ Op->Asl.AmlOpcode,
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/* 4 */ Op->Asl.AmlOpcodeLength,
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/* 5 */ Op->Asl.AmlPkgLenBytes,
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/* 6 */ Op->Asl.AmlLength,
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/* 7 */ Op->Asl.AmlSubtreeLength,
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/* 8 */ Op->Asl.Parent ? Op->Asl.Parent->Asl.AmlSubtreeLength : 0,
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/* 9 */ Op,
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/* 10 */ Op->Asl.Child,
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/* 11 */ Op->Asl.Parent,
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/* 12 */ Op->Asl.CompileFlags,
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/* 13 */ Op->Asl.AcpiBtype,
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/* 14 */ Op->Asl.FinalAmlLength,
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/* 15 */ Op->Asl.Column,
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/* 16 */ Op->Asl.LineNumber);
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/* Generate the AML for this node */
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CgWriteNode (Op);
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: CgLocalWriteAmlData
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*
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* PARAMETERS: Op - Current parse op
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* Buffer - Buffer to write
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* Length - Size of data in buffer
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*
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* RETURN: None
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*
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* DESCRIPTION: Write a buffer of AML data to the AML output file.
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*
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******************************************************************************/
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static void
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CgLocalWriteAmlData (
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ACPI_PARSE_OBJECT *Op,
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void *Buffer,
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UINT32 Length)
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{
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/* Write the raw data to the AML file */
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FlWriteFile (ASL_FILE_AML_OUTPUT, Buffer, Length);
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/* Update the final AML length for this node (used for listings) */
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if (Op)
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{
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Op->Asl.FinalAmlLength += Length;
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: CgWriteAmlOpcode
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*
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* PARAMETERS: Op - Parse node with an AML opcode
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*
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* RETURN: None.
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*
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* DESCRIPTION: Write the AML opcode corresponding to a parse node.
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*
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******************************************************************************/
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static void
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CgWriteAmlOpcode (
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ACPI_PARSE_OBJECT *Op)
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{
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UINT8 PkgLenFirstByte;
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UINT32 i;
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union {
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UINT16 Opcode;
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UINT8 OpcodeBytes[2];
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} Aml;
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union {
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UINT32 Len;
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UINT8 LenBytes[4];
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} PkgLen;
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/* We expect some DEFAULT_ARGs, just ignore them */
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if (Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)
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{
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return;
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}
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switch (Op->Asl.AmlOpcode)
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{
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case AML_UNASSIGNED_OPCODE:
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/* These opcodes should not get here */
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printf ("Found a node with an unassigned AML opcode\n");
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FlPrintFile (ASL_FILE_STDERR, "Found a node with an unassigned AML opcode\n");
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return;
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case AML_INT_RESERVEDFIELD_OP:
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/* Special opcodes for within a field definition */
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Aml.Opcode = AML_FIELD_OFFSET_OP;
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break;
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case AML_INT_ACCESSFIELD_OP:
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Aml.Opcode = AML_FIELD_ACCESS_OP;
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break;
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case AML_INT_CONNECTION_OP:
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Aml.Opcode = AML_FIELD_CONNECTION_OP;
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break;
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default:
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Aml.Opcode = Op->Asl.AmlOpcode;
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break;
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}
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switch (Aml.Opcode)
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{
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case AML_PACKAGE_LENGTH:
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/* Value is the length to be encoded (Used in field definitions) */
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PkgLen.Len = (UINT32) Op->Asl.Value.Integer;
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break;
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default:
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/* Check for two-byte opcode */
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if (Aml.Opcode > 0x00FF)
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{
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/* Write the high byte first */
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CgLocalWriteAmlData (Op, &Aml.OpcodeBytes[1], 1);
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}
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CgLocalWriteAmlData (Op, &Aml.OpcodeBytes[0], 1);
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/* Subtreelength doesn't include length of package length bytes */
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PkgLen.Len = Op->Asl.AmlSubtreeLength + Op->Asl.AmlPkgLenBytes;
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break;
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}
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/* Does this opcode have an associated "PackageLength" field? */
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if (Op->Asl.CompileFlags & NODE_AML_PACKAGE)
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{
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if (Op->Asl.AmlPkgLenBytes == 1)
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{
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/* Simplest case -- no bytes to follow, just write the count */
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CgLocalWriteAmlData (Op, &PkgLen.LenBytes[0], 1);
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}
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else if (Op->Asl.AmlPkgLenBytes != 0)
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{
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/*
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* Encode the "bytes to follow" in the first byte, top two bits.
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* The low-order nybble of the length is in the bottom 4 bits
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*/
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PkgLenFirstByte = (UINT8)
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(((UINT32) (Op->Asl.AmlPkgLenBytes - 1) << 6) |
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(PkgLen.LenBytes[0] & 0x0F));
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CgLocalWriteAmlData (Op, &PkgLenFirstByte, 1);
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/*
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* Shift the length over by the 4 bits we just stuffed
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* in the first byte
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*/
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PkgLen.Len >>= 4;
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/* Now we can write the remaining bytes - either 1, 2, or 3 bytes */
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for (i = 0; i < (UINT32) (Op->Asl.AmlPkgLenBytes - 1); i++)
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{
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CgLocalWriteAmlData (Op, &PkgLen.LenBytes[i], 1);
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}
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}
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}
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switch (Aml.Opcode)
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{
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case AML_BYTE_OP:
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CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 1);
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break;
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case AML_WORD_OP:
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CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 2);
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break;
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case AML_DWORD_OP:
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CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 4);
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break;
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case AML_QWORD_OP:
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CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 8);
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break;
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case AML_STRING_OP:
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CgLocalWriteAmlData (Op, Op->Asl.Value.String, Op->Asl.AmlLength);
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break;
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default:
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/* All data opcodes must appear above */
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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: CgWriteTableHeader
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*
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* PARAMETERS: Op - The DEFINITIONBLOCK node
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*
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* RETURN: None
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*
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* DESCRIPTION: Write a table header corresponding to the DEFINITIONBLOCK
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*
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******************************************************************************/
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static void
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CgWriteTableHeader (
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ACPI_PARSE_OBJECT *Op)
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{
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ACPI_PARSE_OBJECT *Child;
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/* AML filename */
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Child = Op->Asl.Child;
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/* Signature */
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Child = Child->Asl.Next;
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strncpy (TableHeader.Signature, Child->Asl.Value.String, 4);
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/* Revision */
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Child = Child->Asl.Next;
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TableHeader.Revision = (UINT8) Child->Asl.Value.Integer;
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/* Command-line Revision override */
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if (Gbl_RevisionOverride)
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{
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TableHeader.Revision = Gbl_RevisionOverride;
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}
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/* OEMID */
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Child = Child->Asl.Next;
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strncpy (TableHeader.OemId, Child->Asl.Value.String, 6);
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/* OEM TableID */
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Child = Child->Asl.Next;
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strncpy (TableHeader.OemTableId, Child->Asl.Value.String, 8);
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/* OEM Revision */
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Child = Child->Asl.Next;
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TableHeader.OemRevision = (UINT32) Child->Asl.Value.Integer;
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/* Compiler ID */
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strncpy (TableHeader.AslCompilerId, ASL_CREATOR_ID, 4);
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/* Compiler version */
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TableHeader.AslCompilerRevision = ASL_REVISION;
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/* Table length. Checksum zero for now, will rewrite later */
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TableHeader.Length = Gbl_TableLength;
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TableHeader.Checksum = 0;
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CgLocalWriteAmlData (Op, &TableHeader, sizeof (ACPI_TABLE_HEADER));
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}
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/*******************************************************************************
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*
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* FUNCTION: CgCloseTable
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*
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* PARAMETERS: None.
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*
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* RETURN: None.
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*
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* DESCRIPTION: Complete the ACPI table by calculating the checksum and
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* re-writing the header.
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*
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******************************************************************************/
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static void
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CgCloseTable (
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void)
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{
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signed char Sum;
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UINT8 FileByte;
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FlSeekFile (ASL_FILE_AML_OUTPUT, 0);
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Sum = 0;
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/* Calculate the checksum over the entire file */
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while (FlReadFile (ASL_FILE_AML_OUTPUT, &FileByte, 1) == AE_OK)
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{
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Sum = (signed char) (Sum + FileByte);
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}
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/* Re-write the table header with the checksum */
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TableHeader.Checksum = (UINT8) (0 - Sum);
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FlSeekFile (ASL_FILE_AML_OUTPUT, 0);
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CgLocalWriteAmlData (NULL, &TableHeader, sizeof (ACPI_TABLE_HEADER));
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}
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/*******************************************************************************
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*
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* FUNCTION: CgWriteNode
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*
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* PARAMETERS: Op - Parse node to write.
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*
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* RETURN: None.
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*
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* DESCRIPTION: Write the AML that corresponds to a parse node.
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*
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******************************************************************************/
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static void
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CgWriteNode (
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ACPI_PARSE_OBJECT *Op)
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{
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ASL_RESOURCE_NODE *Rnode;
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/* Always check for DEFAULT_ARG and other "Noop" nodes */
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/* TBD: this may not be the best place for this check */
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if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) ||
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(Op->Asl.ParseOpcode == PARSEOP_EXTERNAL) ||
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(Op->Asl.ParseOpcode == PARSEOP_INCLUDE) ||
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(Op->Asl.ParseOpcode == PARSEOP_INCLUDE_END))
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{
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return;
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}
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Op->Asl.FinalAmlLength = 0;
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switch (Op->Asl.AmlOpcode)
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{
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case AML_RAW_DATA_BYTE:
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case AML_RAW_DATA_WORD:
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case AML_RAW_DATA_DWORD:
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case AML_RAW_DATA_QWORD:
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CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, Op->Asl.AmlLength);
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return;
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case AML_RAW_DATA_BUFFER:
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CgLocalWriteAmlData (Op, Op->Asl.Value.Buffer, Op->Asl.AmlLength);
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return;
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case AML_RAW_DATA_CHAIN:
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Rnode = ACPI_CAST_PTR (ASL_RESOURCE_NODE, Op->Asl.Value.Buffer);
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while (Rnode)
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{
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CgLocalWriteAmlData (Op, Rnode->Buffer, Rnode->BufferLength);
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Rnode = Rnode->Next;
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}
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return;
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default:
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/* Internal data opcodes must all appear above */
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break;
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}
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switch (Op->Asl.ParseOpcode)
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{
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case PARSEOP_DEFAULT_ARG:
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break;
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case PARSEOP_DEFINITIONBLOCK:
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CgWriteTableHeader (Op);
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break;
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case PARSEOP_NAMESEG:
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case PARSEOP_NAMESTRING:
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case PARSEOP_METHODCALL:
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CgLocalWriteAmlData (Op, Op->Asl.Value.String, Op->Asl.AmlLength);
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break;
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default:
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CgWriteAmlOpcode (Op);
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break;
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}
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}
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