/******************************************************************************
 *
 * Module Name: dmtables - disassembler ACPI table support
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2016, 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 "acapps.h"
#include "acdispat.h"
#include "acnamesp.h"
#include "actables.h"
#include "acparser.h"

#include <stdio.h>
#include <time.h>

#define _COMPONENT          ACPI_TOOLS
        ACPI_MODULE_NAME    ("dmtables")


/* Local prototypes */

static void
AdCreateTableHeader (
    char                    *Filename,
    ACPI_TABLE_HEADER       *Table);

static ACPI_STATUS
AdStoreTable (
    ACPI_TABLE_HEADER       *Table,
    UINT32                  *TableIndex);


extern ACPI_TABLE_DESC      LocalTables[1];
extern ACPI_PARSE_OBJECT    *AcpiGbl_ParseOpRoot;


/******************************************************************************
 *
 * FUNCTION:    AdDisassemblerHeader
 *
 * PARAMETERS:  Filename            - Input file for the table
 *              TableType           - Either AML or DataTable
 *
 * RETURN:      None
 *
 * DESCRIPTION: Create the disassembler header, including ACPICA signon with
 *              current time and date.
 *
 *****************************************************************************/

void
AdDisassemblerHeader (
    char                    *Filename,
    UINT8                   TableType)
{
    time_t                  Timer;


    time (&Timer);

    /* Header and input table info */

    AcpiOsPrintf ("/*\n");
    AcpiOsPrintf (ACPI_COMMON_HEADER (AML_DISASSEMBLER_NAME, " * "));

    if (TableType == ACPI_IS_AML_TABLE)
    {
        if (AcpiGbl_CstyleDisassembly)
        {
            AcpiOsPrintf (
                " * Disassembling to symbolic ASL+ operators\n"
                " *\n");
        }
        else
        {
            AcpiOsPrintf (
                " * Disassembling to non-symbolic legacy ASL operators\n"
                " *\n");
        }
    }

    AcpiOsPrintf (" * Disassembly of %s, %s", Filename, ctime (&Timer));
    AcpiOsPrintf (" *\n");
}


/******************************************************************************
 *
 * FUNCTION:    AdCreateTableHeader
 *
 * PARAMETERS:  Filename            - Input file for the table
 *              Table               - Pointer to the raw table
 *
 * RETURN:      None
 *
 * DESCRIPTION: Create the ASL table header, including ACPICA signon with
 *              current time and date.
 *
 *****************************************************************************/

static void
AdCreateTableHeader (
    char                    *Filename,
    ACPI_TABLE_HEADER       *Table)
{
    UINT8                   Checksum;


    /* Reset globals for External statements */

    AcpiGbl_NumExternalMethods = 0;
    AcpiGbl_ResolvedExternalMethods = 0;

    /*
     * Print file header and dump original table header
     */
    AdDisassemblerHeader (Filename, ACPI_IS_AML_TABLE);

    AcpiOsPrintf (" * Original Table Header:\n");
    AcpiOsPrintf (" *     Signature        \"%4.4s\"\n",    Table->Signature);
    AcpiOsPrintf (" *     Length           0x%8.8X (%u)\n", Table->Length, Table->Length);

    /* Print and validate the revision */

    AcpiOsPrintf (" *     Revision         0x%2.2X",      Table->Revision);

    switch (Table->Revision)
    {
    case 0:

        AcpiOsPrintf (" **** Invalid Revision");
        break;

    case 1:

        /* Revision of DSDT controls the ACPI integer width */

        if (ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_DSDT))
        {
            AcpiOsPrintf (" **** 32-bit table (V1), no 64-bit math support");
        }
        break;

    default:

        break;
    }

    /* Print and validate the table checksum */

    AcpiOsPrintf ("\n *     Checksum         0x%2.2X",        Table->Checksum);

    Checksum = AcpiTbChecksum (ACPI_CAST_PTR (UINT8, Table), Table->Length);
    if (Checksum)
    {
        AcpiOsPrintf (" **** Incorrect checksum, should be 0x%2.2X",
            (UINT8) (Table->Checksum - Checksum));
    }

    AcpiOsPrintf ("\n");
    AcpiOsPrintf (" *     OEM ID           \"%.6s\"\n",     Table->OemId);
    AcpiOsPrintf (" *     OEM Table ID     \"%.8s\"\n",     Table->OemTableId);
    AcpiOsPrintf (" *     OEM Revision     0x%8.8X (%u)\n", Table->OemRevision, Table->OemRevision);
    AcpiOsPrintf (" *     Compiler ID      \"%.4s\"\n",     Table->AslCompilerId);
    AcpiOsPrintf (" *     Compiler Version 0x%8.8X (%u)\n", Table->AslCompilerRevision, Table->AslCompilerRevision);
    AcpiOsPrintf (" */\n");

    /*
     * Open the ASL definition block.
     *
     * Note: the AMLFilename string is left zero-length in order to just let
     * the compiler create it when the disassembled file is compiled. This
     * makes it easier to rename the disassembled ASL file if needed.
     */
    AcpiOsPrintf (
        "DefinitionBlock (\"\", \"%4.4s\", %hu, \"%.6s\", \"%.8s\", 0x%8.8X)\n",
        Table->Signature, Table->Revision,
        Table->OemId, Table->OemTableId, Table->OemRevision);
}


/******************************************************************************
 *
 * FUNCTION:    AdDisplayTables
 *
 * PARAMETERS:  Filename            - Input file for the table
 *              Table               - Pointer to the raw table
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Display (disassemble) loaded tables and dump raw tables
 *
 *****************************************************************************/

ACPI_STATUS
AdDisplayTables (
    char                    *Filename,
    ACPI_TABLE_HEADER       *Table)
{


    if (!AcpiGbl_ParseOpRoot)
    {
        return (AE_NOT_EXIST);
    }

    if (!AcpiGbl_DmOpt_Listing)
    {
        AdCreateTableHeader (Filename, Table);
    }

    AcpiDmDisassemble (NULL, AcpiGbl_ParseOpRoot, ACPI_UINT32_MAX);
    MpEmitMappingInfo ();

    if (AcpiGbl_DmOpt_Listing)
    {
        AcpiOsPrintf ("\n\nTable Header:\n");
        AcpiUtDebugDumpBuffer ((UINT8 *) Table, sizeof (ACPI_TABLE_HEADER),
            DB_BYTE_DISPLAY, ACPI_UINT32_MAX);

        AcpiOsPrintf ("Table Body (Length 0x%X)\n", Table->Length);
        AcpiUtDebugDumpBuffer (((UINT8 *) Table + sizeof (ACPI_TABLE_HEADER)),
            Table->Length, DB_BYTE_DISPLAY, ACPI_UINT32_MAX);
    }

    return (AE_OK);
}


/*******************************************************************************
 *
 * FUNCTION:    AdStoreTable
 *
 * PARAMETERS:  Table               - Table header
 *              TableIndex          - Where the table index is returned
 *
 * RETURN:      Status and table index.
 *
 * DESCRIPTION: Add an ACPI table to the global table list
 *
 ******************************************************************************/

static ACPI_STATUS
AdStoreTable (
    ACPI_TABLE_HEADER       *Table,
    UINT32                  *TableIndex)
{
    ACPI_STATUS             Status;
    ACPI_TABLE_DESC         *TableDesc;


    Status = AcpiTbGetNextTableDescriptor (TableIndex, &TableDesc);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    /* Initialize added table */

    AcpiTbInitTableDescriptor (TableDesc, ACPI_PTR_TO_PHYSADDR (Table),
        ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL, Table);
    Status = AcpiTbValidateTable (TableDesc);
    return (Status);
}


/******************************************************************************
 *
 * FUNCTION:    AdGetLocalTables
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Get the ACPI tables from either memory or a file
 *
 *****************************************************************************/

ACPI_STATUS
AdGetLocalTables (
    void)
{
    ACPI_STATUS             Status;
    ACPI_TABLE_HEADER       TableHeader;
    ACPI_TABLE_HEADER       *NewTable;
    UINT32                  TableIndex;


    /* Get the DSDT via table override */

    ACPI_MOVE_32_TO_32 (TableHeader.Signature, ACPI_SIG_DSDT);
    AcpiOsTableOverride (&TableHeader, &NewTable);
    if (!NewTable)
    {
        fprintf (stderr, "Could not obtain DSDT\n");
        return (AE_NO_ACPI_TABLES);
    }

    AdWriteTable (NewTable, NewTable->Length,
        ACPI_SIG_DSDT, NewTable->OemTableId);

    /* Store DSDT in the Table Manager */

    Status = AdStoreTable (NewTable, &TableIndex);
    if (ACPI_FAILURE (Status))
    {
        fprintf (stderr, "Could not store DSDT\n");
        return (AE_NO_ACPI_TABLES);
    }

    return (AE_OK);
}


/******************************************************************************
 *
 * FUNCTION:    AdParseTable
 *
 * PARAMETERS:  Table               - Pointer to the raw table
 *              OwnerId             - Returned OwnerId of the table
 *              LoadTable           - If add table to the global table list
 *              External            - If this is an external table
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Parse an ACPI AML table
 *
 *****************************************************************************/

ACPI_STATUS
AdParseTable (
    ACPI_TABLE_HEADER       *Table,
    ACPI_OWNER_ID           *OwnerId,
    BOOLEAN                 LoadTable,
    BOOLEAN                 External)
{
    ACPI_STATUS             Status = AE_OK;
    ACPI_WALK_STATE         *WalkState;
    UINT8                   *AmlStart;
    UINT32                  AmlLength;
    UINT32                  TableIndex;


    if (!Table)
    {
        return (AE_NOT_EXIST);
    }

    /* Pass 1:  Parse everything except control method bodies */

    fprintf (stderr, "Pass 1 parse of [%4.4s]\n", (char *) Table->Signature);

    AmlLength = Table->Length - sizeof (ACPI_TABLE_HEADER);
    AmlStart = ((UINT8 *) Table + sizeof (ACPI_TABLE_HEADER));

    /* Create the root object */

    AcpiGbl_ParseOpRoot = AcpiPsCreateScopeOp (AmlStart);
    if (!AcpiGbl_ParseOpRoot)
    {
        return (AE_NO_MEMORY);
    }

    /* Create and initialize a new walk state */

    WalkState = AcpiDsCreateWalkState (0, AcpiGbl_ParseOpRoot, NULL, NULL);
    if (!WalkState)
    {
        return (AE_NO_MEMORY);
    }

    Status = AcpiDsInitAmlWalk (WalkState, AcpiGbl_ParseOpRoot,
        NULL, AmlStart, AmlLength, NULL, ACPI_IMODE_LOAD_PASS1);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    WalkState->ParseFlags &= ~ACPI_PARSE_DELETE_TREE;
    WalkState->ParseFlags |= ACPI_PARSE_DISASSEMBLE;

    Status = AcpiPsParseAml (WalkState);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    /* If LoadTable is FALSE, we are parsing the last loaded table */

    TableIndex = AcpiGbl_RootTableList.CurrentTableCount - 1;

    /* Pass 2 */

    if (LoadTable)
    {
        Status = AdStoreTable (Table, &TableIndex);
        if (ACPI_FAILURE (Status))
        {
            return (Status);
        }
        Status = AcpiTbAllocateOwnerId (TableIndex);
        if (ACPI_FAILURE (Status))
        {
            return (Status);
        }
        if (OwnerId)
        {
            Status = AcpiTbGetOwnerId (TableIndex, OwnerId);
            if (ACPI_FAILURE (Status))
            {
                return (Status);
            }
        }
    }

    fprintf (stderr, "Pass 2 parse of [%4.4s]\n", (char *) Table->Signature);

    Status = AcpiNsOneCompleteParse (ACPI_IMODE_LOAD_PASS2, TableIndex, NULL);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    /* No need to parse control methods of external table */

    if (External)
    {
        return (AE_OK);
    }

    /*
     * Pass 3: Parse control methods and link their parse trees
     * into the main parse tree
     */
    fprintf (stderr,
        "Parsing Deferred Opcodes (Methods/Buffers/Packages/Regions)\n");

    Status = AcpiDmParseDeferredOps (AcpiGbl_ParseOpRoot);
    fprintf (stderr, "\n");

    /* Process Resource Templates */

    AcpiDmFindResources (AcpiGbl_ParseOpRoot);

    fprintf (stderr, "Parsing completed\n");
    return (AE_OK);
}