acpixtract.c

acpi tools for linux include acpiexec and acpixtract

/******************************************************************************
 *
 * Module Name: acpixtract - convert ascii ACPI tables to binary
 *              $Revision: 1.7 $
 *
 *****************************************************************************/

/******************************************************************************
 *
 * 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

#define VERSION             0x20060324

#define FIND_HEADER         0
#define EXTRACT_DATA        1
#define BUFFER_SIZE         256

char                        Filename[16];
unsigned char               Data[16];

/* Local prototypes */

void
CheckAscii (
    unsigned char           *Name,
    int                     Count);

void
NormalizeSignature (
    char                    *Signature);

unsigned int
GetNextInstance (
    char                    *InputPathname,
    char                    *Signature);

int
ExtractTables (
    char                    *InputPathname,
    char                    *Signature,
    unsigned int            MinimumInstances);

size_t
GetTableHeader (
    FILE                    *InputFile,
    unsigned char           *OutputData);

unsigned int
CountTableInstances (
    char                    *InputPathname,
    char                    *Signature);

int
ListTables (
    char                    *InputPathname);

size_t
ConvertLine (
    char                    *InputLine,
    unsigned char           *OutputData);

void
DisplayUsage (
    void);


struct TableInfo
{
    unsigned int            Signature;
    unsigned int            Instances;
    unsigned int            NextInstance;
    struct TableInfo        *Next;
};

struct TableInfo            *ListHead = NULL;


/******************************************************************************
 *
 * FUNCTION:    DisplayUsage
 *
 * DESCRIPTION: Usage message
 *
 ******************************************************************************/

void
DisplayUsage (
    void)
{

    printf ("Usage: acpixtract [option] <InputFile>\n");
    printf ("\nExtract binary ACPI tables from text acpidump output\n");
    printf ("Default invocation extracts all DSDTs and SSDTs\n");
    printf ("Version %8.8X\n\n", VERSION);
    printf ("Options:\n");
    printf (" -a                    Extract all tables, not just DSDT/SSDT\n");
    printf (" -l                    List table summaries, do not extract\n");
    printf (" -s<Signature>         Extract all tables named <Signature>\n");
    printf ("\n");
}


/*******************************************************************************
 *
 * FUNCTION:    CheckAscii
 *
 * PARAMETERS:  Name                - Ascii string, at least as long as Count
 *              Count               - Number of characters to check
 *
 * RETURN:      None
 *
 * DESCRIPTION: Ensure that the requested number of characters are printable
 *              Ascii characters. Sets non-printable and null chars to <space>.
 *
 ******************************************************************************/

void
CheckAscii (
    unsigned char           *Name,
    int                     Count)
{
    int                     i;


    for (i = 0; i < Count; i++)
    {
        if (!Name[i] || !isprint (Name[i]))
        {
            Name[i] = ' ';
        }
    }
}


/*******************************************************************************
 *
 * FUNCTION:    NormalizeSignature
 *
 * PARAMETERS:  Name                - Ascii string
 *
 * RETURN:      None
 *
 * DESCRIPTION: Change "RSD PTR" to "RSDP"
 *
 ******************************************************************************/

void
NormalizeSignature (
    char                    *Signature)
{

    if (!strncmp (Signature, "RSD ", 4))
    {
        Signature[3] = 'P';
    }
}


/******************************************************************************
 *
 * FUNCTION:    ConvertLine
 *
 * DESCRIPTION: Convert one line of ascii text binary (up to 16 bytes)
 *
 ******************************************************************************/

size_t
ConvertLine (
    char                    *InputLine,
    unsigned char           *OutputData)
{
    char                    *End;
    int                     BytesConverted;
    int                     Converted[16];
    int                     i;


    /* Terminate the input line at the end of the actual data (for sscanf) */

    End = strstr (InputLine + 2, "  ");
    if (!End)
    {
        return 0;   /* Don't understand the format */
    }
    *End = 0;

    /*
     * Convert one line of table data, of the form:
     * <offset>: <up to 16 bytes of hex data> <ASCII representation> <newline>
     *
     * Example:
     * 02C0: 5F 53 42 5F 4C 4E 4B 44 00 12 13 04 0C FF FF 08  _SB_LNKD........
     */
    BytesConverted = sscanf (InputLine,
        "%*s %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x",
        &Converted[0],  &Converted[1],  &Converted[2],  &Converted[3],
        &Converted[4],  &Converted[5],  &Converted[6],  &Converted[7],
        &Converted[8],  &Converted[9],  &Converted[10], &Converted[11],
        &Converted[12], &Converted[13], &Converted[14], &Converted[15]);

    /* Pack converted data into a byte array */

    for (i = 0; i < BytesConverted; i++)
    {
        OutputData[i] = (unsigned char) Converted[i];
    }

    return ((size_t) BytesConverted);
}


/******************************************************************************
 *
 * FUNCTION:    GetTableHeader
 *
 * DESCRIPTION: Extract and convert a table heaader
 *
 ******************************************************************************/

size_t
GetTableHeader (
    FILE                    *InputFile,
    unsigned char           *OutputData)
{
    size_t                  BytesConverted;
    size_t                  TotalConverted = 0;
    char                    Buffer[BUFFER_SIZE];
    int                     i;


    /* Get the full 36 byte header, requires 3 lines */

    for (i = 0; i < 3; i++)
    {
        if (!fgets (Buffer, BUFFER_SIZE, InputFile))
        {
            return TotalConverted;
        }

        BytesConverted = ConvertLine (Buffer, OutputData);
        TotalConverted += BytesConverted;
        OutputData += 16;

        if (BytesConverted != 16)
        {
            return TotalConverted;
        }
    }

    return TotalConverted;
}


/******************************************************************************
 *
 * FUNCTION:    CountTableInstances
 *
 * DESCRIPTION: Count the instances of table <Signature> within the input file
 *
 ******************************************************************************/

unsigned int
CountTableInstances (
    char                    *InputPathname,
    char                    *Signature)
{
    char                    Buffer[BUFFER_SIZE];
    FILE                    *InputFile;
    unsigned int            Instances = 0;


    InputFile = fopen (InputPathname, "rt");
    if (!InputFile)
    {
        printf ("Could not open %s\n", InputPathname);
        return 0;
    }

    /* Count the number of instances of this signature */

    while (fgets (Buffer, BUFFER_SIZE, InputFile))