aslutils.c

acpi tools for linux include acpiexec and acpixtract

/******************************************************************************
 *
 * Module Name: aslutils -- compiler utilities
 *              $Revision: 1.74 $
 *
 *****************************************************************************/

/******************************************************************************
 *
 * 1. Copyright Notice
 *
 * Some or all of this work - Copyright (c) 1999 - 2008, 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.
 *
 *****************************************************************************/


#include "aslcompiler.h"
#include "aslcompiler.y.h"
#include "acnamesp.h"
#include "amlcode.h"

#define _COMPONENT          ACPI_COMPILER
        ACPI_MODULE_NAME    ("aslutils")

#ifdef _USE_BERKELEY_YACC
extern const char * const       AslCompilername[];
static const char * const       *yytname = &AslCompilername[254];
#else
extern const char * const       yytname[];
#endif

char                    HexLookup[] =
{
    '0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'
};


/* Local prototypes */

static ACPI_STATUS
UtStrtoul64 (
    char                    *String,
    UINT32                  Base,
    ACPI_INTEGER            *RetInteger);

static void
UtPadNameWithUnderscores (
    char                    *NameSeg,
    char                    *PaddedNameSeg);

static void
UtAttachNameseg (
    ACPI_PARSE_OBJECT       *Op,
    char                    *Name);


/*******************************************************************************
 *
 * FUNCTION:    AcpiPsDisplayConstantOpcodes
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Print AML opcodes that can be used in constant expressions.
 *
 ******************************************************************************/

void
UtDisplayConstantOpcodes (
    void)
{
    UINT32                  i;


    printf ("Constant expression opcode information\n\n");

    for (i = 0; i < sizeof (AcpiGbl_AmlOpInfo) / sizeof (ACPI_OPCODE_INFO); i++)
    {
        if (AcpiGbl_AmlOpInfo[i].Flags & AML_CONSTANT)
        {
            printf ("%s\n", AcpiGbl_AmlOpInfo[i].Name);
        }
    }
}


/*******************************************************************************
 *
 * FUNCTION:    UtLocalCalloc
 *
 * PARAMETERS:  Size        - Bytes to be allocated
 *
 * RETURN:      Pointer to the allocated memory.  Guaranteed to be valid.
 *
 * DESCRIPTION: Allocate zero-initialized memory.  Aborts the compile on an
 *              allocation failure, on the assumption that nothing more can be
 *              accomplished.
 *
 ******************************************************************************/

void *
UtLocalCalloc (
    UINT32                  Size)
{
    void                    *Allocated;


    Allocated = ACPI_ALLOCATE_ZEROED (Size);
    if (!Allocated)
    {
        AslCommonError (ASL_ERROR, ASL_MSG_MEMORY_ALLOCATION,
            Gbl_CurrentLineNumber, Gbl_LogicalLineNumber,
            Gbl_InputByteCount, Gbl_CurrentColumn,
            Gbl_Files[ASL_FILE_INPUT].Filename, NULL);
        exit (1);
    }

    TotalAllocations++;
    TotalAllocated += Size;
    return (Allocated);
}


/*******************************************************************************
 *
 * FUNCTION:    UtBeginEvent
 *
 * PARAMETERS:  Name        - Ascii name of this event
 *
 * RETURN:      Event       - Event number (integer index)
 *
 * DESCRIPTION: Saves the current time with this event
 *
 ******************************************************************************/

UINT8
UtBeginEvent (
    char                    *Name)
{

    if (AslGbl_NextEvent >= ASL_NUM_EVENTS)
    {
        AcpiOsPrintf ("Ran out of compiler event structs!\n");
        return (AslGbl_NextEvent);
    }

    /* Init event with current (start) time */

    AslGbl_Events[AslGbl_NextEvent].StartTime = AcpiOsGetTimer ();
    AslGbl_Events[AslGbl_NextEvent].EventName = Name;
    AslGbl_Events[AslGbl_NextEvent].Valid = TRUE;

    return (AslGbl_NextEvent++);
}


/*******************************************************************************
 *
 * FUNCTION:    UtEndEvent
 *
 * PARAMETERS:  Event       - Event number (integer index)
 *
 * RETURN:      None
 *
 * DESCRIPTION: Saves the current time (end time) with this event
 *
 ******************************************************************************/

void
UtEndEvent (
    UINT8                  Event)
{

    if (Event >= ASL_NUM_EVENTS)
    {
        return;
    }

    /* Insert end time for event */

    AslGbl_Events[Event].EndTime = AcpiOsGetTimer ();
}


/*******************************************************************************
 *
 * FUNCTION:    UtHexCharToValue
 *
 * PARAMETERS:  HexChar         - Hex character in Ascii
 *
 * RETURN:      The binary value of the hex character
 *
 * DESCRIPTION: Perform ascii-to-hex translation
 *
 ******************************************************************************/

UINT8
UtHexCharToValue (
    int                     HexChar)
{

    if (HexChar <= 0x39)
    {
        return ((UINT8) (HexChar - 0x30));
    }

    if (HexChar <= 0x46)
    {
        return ((UINT8) (HexChar - 0x37));
    }

    return ((UINT8) (HexChar - 0x57));
}


/*******************************************************************************
 *
 * FUNCTION:    UtConvertByteToHex
 *
 * PARAMETERS:  RawByte         - Binary data
 *              Buffer          - Pointer to where the hex bytes will be stored
 *
 * RETURN:      Ascii hex byte is stored in Buffer.
 *
 * DESCRIPTION: Perform hex-to-ascii translation.  The return data is prefixed
 *              with "0x"
 *
 ******************************************************************************/

void
UtConvertByteToHex (
    UINT8                   RawByte,
    UINT8                   *Buffer)
{

    Buffer[0] = '0';
    Buffer[1] = 'x';

    Buffer[2] = (UINT8) HexLookup[(RawByte >> 4) & 0xF];
    Buffer[3] = (UINT8) HexLookup[RawByte & 0xF];
}


/*******************************************************************************
 *
 * FUNCTION:    UtConvertByteToAsmHex
 *
 * PARAMETERS:  RawByte         - Binary data
 *              Buffer          - Pointer to where the hex bytes will be stored
 *
 * RETURN:      Ascii hex byte is stored in Buffer.
 *
 * DESCRIPTION: Perform hex-to-ascii translation.  The return data is prefixed
 *              with "0x"
 *
 ******************************************************************************/

void
UtConvertByteToAsmHex (
    UINT8                   RawByte,
    UINT8                   *Buffer)
{

    Buffer[0] = '0';
    Buffer[1] = (UINT8) HexLookup[(RawByte >> 4) & 0xF];
    Buffer[2] = (UINT8) HexLookup[RawByte & 0xF];
    Buffer[3] = 'h';
}


/*******************************************************************************
 *
 * FUNCTION:    DbgPrint
 *
 * PARAMETERS:  Type            - Type of output
 *              Fmt             - Printf format string
 *              ...             - variable printf list
 *
 * RETURN:      None
 *
 * DESCRIPTION: Conditional print statement.  Prints to stderr only if the
 *              debug flag is set.
 *
 ******************************************************************************/

void
DbgPrint (
    UINT32                  Type,
    char                    *Fmt,
    ...)
{
    va_list                 Args;


    va_start (Args, Fmt);

    if (!Gbl_DebugFlag)
    {
        return;
    }

    if ((Type == ASL_PARSE_OUTPUT) &&
        (!(AslCompilerdebug)))
    {
        return;
    }

    (void) vfprintf (stderr, Fmt, Args);
    va_end (Args);
    return;
}


/*******************************************************************************
 *
 * FUNCTION:    UtPrintFormattedName
 *
 * PARAMETERS:  ParseOpcode         - Parser keyword ID
 *              Level               - Indentation level
 *
 * RETURN:      None
 *
 * DESCRIPTION: Print the ascii name of the parse opcode.
 *
 ******************************************************************************/

#define TEXT_OFFSET 10

void
UtPrintFormattedName (
    UINT16                  ParseOpcode,
    UINT32                  Level)
{

    if (Level)
    {
        DbgPrint (ASL_TREE_OUTPUT,
            "%*s", (3 * Level), " ");
    }
    DbgPrint (ASL_TREE_OUTPUT,
        " %-20.20s", UtGetOpName (ParseOpcode));

    if (Level < TEXT_OFFSET)
    {
        DbgPrint (ASL_TREE_OUTPUT,
            "%*s", (TEXT_OFFSET - Level) * 3, " ");
    }
}


/*******************************************************************************
 *
 * FUNCTION:    UtSetParseOpName
 *
 * PARAMETERS:  Op
 *
 * RETURN:      None
 *
 * DESCRIPTION: Insert the ascii name of the parse opcode
 *
 ******************************************************************************/

void
UtSetParseOpName (
    ACPI_PARSE_OBJECT       *Op)
{

    strncpy (Op->Asl.ParseOpName, UtGetOpName (Op->Asl.ParseOpcode),
        ACPI_MAX_PARSEOP_NAME);
}


/*******************************************************************************
 *
 * FUNCTION:    UtGetOpName
 *
 * PARAMETERS:  ParseOpcode         - Parser keyword ID
 *
 * RETURN:      Pointer to the opcode name
 *
 * DESCRIPTION: Get the ascii name of the parse opcode
 *
 ******************************************************************************/

char *
UtGetOpName (
    UINT32                  ParseOpcode)
{

    /*
     * First entries (ASL_YYTNAME_START) in yytname are special reserved names.
     * Ignore first 8 characters of the name
     */
    return ((char *) yytname
        [(ParseOpcode - ASL_FIRST_PARSE_OPCODE) + ASL_YYTNAME_START] + 8);
}


/*******************************************************************************
 *
 * FUNCTION:    UtDisplaySummary
 *
 * PARAMETERS:  FileID          - ID of outpout file
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display compilation statistics
 *
 ******************************************************************************/

void
UtDisplaySummary (
    UINT32                  FileId)
{

    if (FileId != ASL_FILE_STDOUT)
    {
        /* Compiler name and version number */

        FlPrintFile (FileId, "%s version %X [%s]\n",
            CompilerId, (UINT32) ACPI_CA_VERSION, __DATE__);
    }

    /* Input/Output summary */

    FlPrintFile (FileId,
        "ASL Input:  %s - %d lines, %d bytes, %d keywords\n",
        Gbl_Files[ASL_FILE_INPUT].Filename, Gbl_CurrentLineNumber,