path: root/source/compiler/aslallocate.c

/******************************************************************************
 *
 * Module Name: aslallocate -- Local memory allocation
 *
 *****************************************************************************/

/******************************************************************************
 *
 * 1. Copyright Notice
 *
 * Some or all of this work - Copyright (c) 1999 - 2021, 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.
 *
 *****************************************************************************
 *
 * Alternatively, you may choose to be licensed under the terms of the
 * following license:
 *
 * 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.
 *
 * 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 MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * 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 DAMAGE.
 *
 * Alternatively, you may choose to be licensed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 *****************************************************************************/

#include "aslcompiler.h"

/*
 * Local heap allocation wrappers. See aslcache.c for allocation from local
 * cache alloctions
 */


/*******************************************************************************
 *
 * FUNCTION:    UtLocalCalloc
 *
 * PARAMETERS:  Size                - Bytes to be allocated
 *
 * RETURN:      Pointer to the allocated memory. If this function returns
 *              (the compiler is not aborted), the pointer is guaranteed to
 *              be valid.
 *
 * DESCRIPTION: Allocate zero-initialized memory. The point of this function
 *              is to abort the compile on an allocation failure, on the
 *              assumption that nothing more can be accomplished.
 *
 * NOTE:        For allocation from the local caches, see aslcache.c
 *
 ******************************************************************************/

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


    Allocated = ACPI_ALLOCATE_ZEROED (Size);
    if (!Allocated)
    {
        AslCommonError (ASL_ERROR, ASL_MSG_MEMORY_ALLOCATION,
            AslGbl_CurrentLineNumber, AslGbl_LogicalLineNumber,
            AslGbl_InputByteCount, AslGbl_CurrentColumn,
            AslGbl_Files[ASL_FILE_INPUT].Filename, NULL);

        CmCleanupAndExit ();
        exit (1);
    }

    AslGbl_TotalAllocations++;
    AslGbl_TotalAllocated += Size;
    return (Allocated);
}


/******************************************************************************
 *
 * FUNCTION:    UtExpandLineBuffers
 *
 * PARAMETERS:  None. Updates global line buffer pointers.
 *
 * RETURN:      None. Reallocates the global line buffers
 *
 * DESCRIPTION: Called if the current line buffer becomes filled. Reallocates
 *              all global line buffers and updates AslGbl_LineBufferSize. NOTE:
 *              Also used for the initial allocation of the buffers, when
 *              all of the buffer pointers are NULL. Initial allocations are
 *              of size ASL_DEFAULT_LINE_BUFFER_SIZE
 *
 *****************************************************************************/

void
UtExpandLineBuffers (
    void)
{
    UINT32                  NewSize;


    /* Attempt to double the size of all line buffers */

    NewSize = AslGbl_LineBufferSize * 2;
    if (AslGbl_CurrentLineBuffer)
    {
        DbgPrint (ASL_DEBUG_OUTPUT,
            "Increasing line buffer size from %u to %u\n",
            AslGbl_LineBufferSize, NewSize);
    }

    UtReallocLineBuffers (&AslGbl_CurrentLineBuffer, AslGbl_LineBufferSize, NewSize);
    UtReallocLineBuffers (&AslGbl_MainTokenBuffer, AslGbl_LineBufferSize, NewSize);
    UtReallocLineBuffers (&AslGbl_MacroTokenBuffer, AslGbl_LineBufferSize, NewSize);
    UtReallocLineBuffers (&AslGbl_ExpressionTokenBuffer, AslGbl_LineBufferSize, NewSize);

    AslGbl_LineBufPtr = AslGbl_CurrentLineBuffer;
    AslGbl_LineBufferSize = NewSize;
}


/******************************************************************************
 *
 * FUNCTION:    UtReallocLineBuffers
 *
 * PARAMETERS:  Buffer              - Buffer to realloc
 *              OldSize             - Old size of Buffer
 *              NewSize             - New size of Buffer
 *
 * RETURN:      none
 *
 * DESCRIPTION: Reallocate and initialize Buffer
 *
 *****************************************************************************/

void
UtReallocLineBuffers (
    char                    **Buffer,
    UINT32                  OldSize,
    UINT32                  NewSize)
{

    *Buffer = realloc (*Buffer, NewSize);
    if (*Buffer)
    {
        memset (*Buffer + OldSize, 0, NewSize - OldSize);
        return;
    }

    printf ("Could not increase line buffer size from %u to %u\n",
        OldSize, NewSize);

    AslError (ASL_ERROR, ASL_MSG_BUFFER_ALLOCATION, NULL, NULL);
    AslAbort ();
}


/******************************************************************************
 *
 * FUNCTION:    UtFreeLineBuffers
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Free all line buffers
 *
 *****************************************************************************/

void
UtFreeLineBuffers (
    void)
{

    free (AslGbl_CurrentLineBuffer);
    free (AslGbl_MainTokenBuffer);
    free (AslGbl_MacroTokenBuffer);
    free (AslGbl_ExpressionTokenBuffer);
}