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| Current File : //sys/contrib/dev/acpica/compiler/aslcodegen.c |
/******************************************************************************
*
* Module Name: aslcodegen - AML code generation
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2011, 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 <contrib/dev/acpica/compiler/aslcompiler.h>
#include "aslcompiler.y.h"
#include <contrib/dev/acpica/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 = 0x00;
break;
case AML_INT_ACCESSFIELD_OP:
Aml.Opcode = 0x01;
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;
}
}