diff options
Diffstat (limited to 'usr/src/uts/intel/io/acpica/utilities/utmath.c')
| -rw-r--r-- | usr/src/uts/intel/io/acpica/utilities/utmath.c | 196 |
1 files changed, 72 insertions, 124 deletions
diff --git a/usr/src/uts/intel/io/acpica/utilities/utmath.c b/usr/src/uts/intel/io/acpica/utilities/utmath.c index b0a40ff2bc..032b72d074 100644 --- a/usr/src/uts/intel/io/acpica/utilities/utmath.c +++ b/usr/src/uts/intel/io/acpica/utilities/utmath.c @@ -4,114 +4,42 @@ * ******************************************************************************/ -/****************************************************************************** - * - * 1. Copyright Notice - * - * Some or all of this work - Copyright (c) 1999 - 2009, Intel Corp. +/* + * Copyright (C) 2000 - 2011, 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. - * - *****************************************************************************/ + * 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. + */ #define __UTMATH_C__ @@ -124,12 +52,32 @@ 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. + * Optional support for 64-bit double-precision integer divide. This code + * is configurable and is implemented in order to support 32-bit kernel + * environments where a 64-bit double-precision math library is not available. + * + * Support for a more normal 64-bit divide/modulo (with check for a divide- + * by-zero) appears after this optional section of code. */ - #ifndef ACPI_USE_NATIVE_DIVIDE + +/* Structures used only for 64-bit divide */ + +typedef struct uint64_struct +{ + UINT32 Lo; + UINT32 Hi; + +} UINT64_STRUCT; + +typedef union uint64_overlay +{ + UINT64 Full; + UINT64_STRUCT Part; + +} UINT64_OVERLAY; + + /******************************************************************************* * * FUNCTION: AcpiUtShortDivide @@ -149,9 +97,9 @@ ACPI_STATUS AcpiUtShortDivide ( - ACPI_INTEGER Dividend, + UINT64 Dividend, UINT32 Divisor, - ACPI_INTEGER *OutQuotient, + UINT64 *OutQuotient, UINT32 *OutRemainder) { UINT64_OVERLAY DividendOvl; @@ -213,10 +161,10 @@ AcpiUtShortDivide ( ACPI_STATUS AcpiUtDivide ( - ACPI_INTEGER InDividend, - ACPI_INTEGER InDivisor, - ACPI_INTEGER *OutQuotient, - ACPI_INTEGER *OutRemainder) + UINT64 InDividend, + UINT64 InDivisor, + UINT64 *OutQuotient, + UINT64 *OutRemainder) { UINT64_OVERLAY Dividend; UINT64_OVERLAY Divisor; @@ -293,8 +241,8 @@ AcpiUtDivide ( * 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; + Partial2.Full = (UINT64) Quotient.Part.Lo * Divisor.Part.Lo; + Partial3.Full = (UINT64) Partial2.Part.Hi + Partial1; Remainder.Part.Hi = Partial3.Part.Lo; Remainder.Part.Lo = Partial2.Part.Lo; @@ -362,9 +310,9 @@ AcpiUtDivide ( ACPI_STATUS AcpiUtShortDivide ( - ACPI_INTEGER InDividend, + UINT64 InDividend, UINT32 Divisor, - ACPI_INTEGER *OutQuotient, + UINT64 *OutQuotient, UINT32 *OutRemainder) { @@ -395,10 +343,10 @@ AcpiUtShortDivide ( ACPI_STATUS AcpiUtDivide ( - ACPI_INTEGER InDividend, - ACPI_INTEGER InDivisor, - ACPI_INTEGER *OutQuotient, - ACPI_INTEGER *OutRemainder) + UINT64 InDividend, + UINT64 InDivisor, + UINT64 *OutQuotient, + UINT64 *OutRemainder) { ACPI_FUNCTION_TRACE (UtDivide); |