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Diffstat (limited to 'sys/contrib/dev/acpica/utmath.c')
| -rw-r--r-- | sys/contrib/dev/acpica/utmath.c | 428 |
1 files changed, 0 insertions, 428 deletions
diff --git a/sys/contrib/dev/acpica/utmath.c b/sys/contrib/dev/acpica/utmath.c deleted file mode 100644 index f519cd2b74fd4..0000000000000 --- a/sys/contrib/dev/acpica/utmath.c +++ /dev/null @@ -1,428 +0,0 @@ -/******************************************************************************* - * - * Module Name: utmath - Integer math support routines - * $Revision: 12 $ - * - ******************************************************************************/ - -/****************************************************************************** - * - * 1. Copyright Notice - * - * Some or all of this work - Copyright (c) 1999 - 2003, 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. - * - *****************************************************************************/ - - -#define __UTMATH_C__ - -#include "acpi.h" - - -#define _COMPONENT ACPI_UTILITIES - ACPI_MODULE_NAME ("utmath") - -/* - * Support for double-precision integer divide. This code is included here - * in order to support kernel environments where the double-precision math - * library is not available. - */ - -#ifndef ACPI_USE_NATIVE_DIVIDE -/******************************************************************************* - * - * FUNCTION: AcpiUtShortDivide - * - * PARAMETERS: InDividend - Pointer to the dividend - * Divisor - 32-bit divisor - * OutQuotient - Pointer to where the quotient is returned - * OutRemainder - Pointer to where the remainder is returned - * - * RETURN: Status (Checks for divide-by-zero) - * - * DESCRIPTION: Perform a short (maximum 64 bits divided by 32 bits) - * divide and modulo. The result is a 64-bit quotient and a - * 32-bit remainder. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiUtShortDivide ( - ACPI_INTEGER *InDividend, - UINT32 Divisor, - ACPI_INTEGER *OutQuotient, - UINT32 *OutRemainder) -{ - UINT64_OVERLAY Dividend; - UINT64_OVERLAY Quotient; - UINT32 Remainder32; - - - ACPI_FUNCTION_TRACE ("UtShortDivide"); - - Dividend.Full = *InDividend; - - /* Always check for a zero divisor */ - - if (Divisor == 0) - { - ACPI_REPORT_ERROR (("AcpiUtShortDivide: Divide by zero\n")); - return_ACPI_STATUS (AE_AML_DIVIDE_BY_ZERO); - } - - /* - * The quotient is 64 bits, the remainder is always 32 bits, - * and is generated by the second divide. - */ - ACPI_DIV_64_BY_32 (0, Dividend.Part.Hi, Divisor, - Quotient.Part.Hi, Remainder32); - ACPI_DIV_64_BY_32 (Remainder32, Dividend.Part.Lo, Divisor, - Quotient.Part.Lo, Remainder32); - - /* Return only what was requested */ - - if (OutQuotient) - { - *OutQuotient = Quotient.Full; - } - if (OutRemainder) - { - *OutRemainder = Remainder32; - } - - return_ACPI_STATUS (AE_OK); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiUtDivide - * - * PARAMETERS: InDividend - Pointer to the dividend - * InDivisor - Pointer to the divisor - * OutQuotient - Pointer to where the quotient is returned - * OutRemainder - Pointer to where the remainder is returned - * - * RETURN: Status (Checks for divide-by-zero) - * - * DESCRIPTION: Perform a divide and modulo. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiUtDivide ( - ACPI_INTEGER *InDividend, - ACPI_INTEGER *InDivisor, - ACPI_INTEGER *OutQuotient, - ACPI_INTEGER *OutRemainder) -{ - UINT64_OVERLAY Dividend; - UINT64_OVERLAY Divisor; - UINT64_OVERLAY Quotient; - UINT64_OVERLAY Remainder; - UINT64_OVERLAY NormalizedDividend; - UINT64_OVERLAY NormalizedDivisor; - UINT32 Partial1; - UINT64_OVERLAY Partial2; - UINT64_OVERLAY Partial3; - - - ACPI_FUNCTION_TRACE ("UtDivide"); - - - /* Always check for a zero divisor */ - - if (*InDivisor == 0) - { - ACPI_REPORT_ERROR (("AcpiUtDivide: Divide by zero\n")); - return_ACPI_STATUS (AE_AML_DIVIDE_BY_ZERO); - } - - Divisor.Full = *InDivisor; - Dividend.Full = *InDividend; - if (Divisor.Part.Hi == 0) - { - /* - * 1) Simplest case is where the divisor is 32 bits, we can - * just do two divides - */ - Remainder.Part.Hi = 0; - - /* - * The quotient is 64 bits, the remainder is always 32 bits, - * and is generated by the second divide. - */ - ACPI_DIV_64_BY_32 (0, Dividend.Part.Hi, Divisor.Part.Lo, - Quotient.Part.Hi, Partial1); - ACPI_DIV_64_BY_32 (Partial1, Dividend.Part.Lo, Divisor.Part.Lo, - Quotient.Part.Lo, Remainder.Part.Lo); - } - - else - { - /* - * 2) The general case where the divisor is a full 64 bits - * is more difficult - */ - Quotient.Part.Hi = 0; - NormalizedDividend = Dividend; - NormalizedDivisor = Divisor; - - /* Normalize the operands (shift until the divisor is < 32 bits) */ - - do - { - ACPI_SHIFT_RIGHT_64 (NormalizedDivisor.Part.Hi, - NormalizedDivisor.Part.Lo); - ACPI_SHIFT_RIGHT_64 (NormalizedDividend.Part.Hi, - NormalizedDividend.Part.Lo); - - } while (NormalizedDivisor.Part.Hi != 0); - - /* Partial divide */ - - ACPI_DIV_64_BY_32 (NormalizedDividend.Part.Hi, - NormalizedDividend.Part.Lo, - NormalizedDivisor.Part.Lo, - Quotient.Part.Lo, Partial1); - - /* - * The quotient is always 32 bits, and simply requires adjustment. - * The 64-bit remainder must be generated. - */ - Partial1 = Quotient.Part.Lo * Divisor.Part.Hi; - Partial2.Full = (ACPI_INTEGER) Quotient.Part.Lo * Divisor.Part.Lo; - Partial3.Full = (ACPI_INTEGER) Partial2.Part.Hi + Partial1; - - Remainder.Part.Hi = Partial3.Part.Lo; - Remainder.Part.Lo = Partial2.Part.Lo; - - if (Partial3.Part.Hi == 0) - { - if (Partial3.Part.Lo >= Dividend.Part.Hi) - { - if (Partial3.Part.Lo == Dividend.Part.Hi) - { - if (Partial2.Part.Lo > Dividend.Part.Lo) - { - Quotient.Part.Lo--; - Remainder.Full -= Divisor.Full; - } - } - else - { - Quotient.Part.Lo--; - Remainder.Full -= Divisor.Full; - } - } - - Remainder.Full = Remainder.Full - Dividend.Full; - Remainder.Part.Hi = (UINT32) -((INT32) Remainder.Part.Hi); - Remainder.Part.Lo = (UINT32) -((INT32) Remainder.Part.Lo); - - if (Remainder.Part.Lo) - { - Remainder.Part.Hi--; - } - } - } - - /* Return only what was requested */ - - if (OutQuotient) - { - *OutQuotient = Quotient.Full; - } - if (OutRemainder) - { - *OutRemainder = Remainder.Full; - } - - return_ACPI_STATUS (AE_OK); -} - -#else - -/******************************************************************************* - * - * FUNCTION: AcpiUtShortDivide, AcpiUtDivide - * - * DESCRIPTION: Native versions of the UtDivide functions. Use these if either - * 1) The target is a 64-bit platform and therefore 64-bit - * integer math is supported directly by the machine. - * 2) The target is a 32-bit or 16-bit platform, and the - * double-precision integer math library is available to - * perform the divide. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiUtShortDivide ( - ACPI_INTEGER *InDividend, - UINT32 Divisor, - ACPI_INTEGER *OutQuotient, - UINT32 *OutRemainder) -{ - - ACPI_FUNCTION_TRACE ("UtShortDivide"); - - - /* Always check for a zero divisor */ - - if (Divisor == 0) - { - ACPI_REPORT_ERROR (("AcpiUtShortDivide: Divide by zero\n")); - return_ACPI_STATUS (AE_AML_DIVIDE_BY_ZERO); - } - - /* Return only what was requested */ - - if (OutQuotient) - { - *OutQuotient = *InDividend / Divisor; - } - if (OutRemainder) - { - *OutRemainder = (UINT32) *InDividend % Divisor; - } - - return_ACPI_STATUS (AE_OK); -} - -ACPI_STATUS -AcpiUtDivide ( - ACPI_INTEGER *InDividend, - ACPI_INTEGER *InDivisor, - ACPI_INTEGER *OutQuotient, - ACPI_INTEGER *OutRemainder) -{ - ACPI_FUNCTION_TRACE ("UtDivide"); - - - /* Always check for a zero divisor */ - - if (*InDivisor == 0) - { - ACPI_REPORT_ERROR (("AcpiUtDivide: Divide by zero\n")); - return_ACPI_STATUS (AE_AML_DIVIDE_BY_ZERO); - } - - - /* Return only what was requested */ - - if (OutQuotient) - { - *OutQuotient = *InDividend / *InDivisor; - } - if (OutRemainder) - { - *OutRemainder = *InDividend % *InDivisor; - } - - return_ACPI_STATUS (AE_OK); -} - -#endif - - |