/****************************************************************************** * * Module Name: prexpress - Preprocessor #if expression support * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2024, 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" #define _COMPONENT ASL_PREPROCESSOR ACPI_MODULE_NAME ("prexpress") /* Local prototypes */ static char * PrExpandMacros ( char *Line); #ifdef _UNDER_DEVELOPMENT /****************************************************************************** * * FUNCTION: PrUnTokenize * * PARAMETERS: Buffer - Token Buffer * Next - "Next" buffer from GetNextToken * * RETURN: None * * DESCRIPTION: Un-tokenized the current token buffer. The implementation is * to simply set the null inserted by GetNextToken to a blank. * If Next is NULL, there were no tokens found in the Buffer, * so there is nothing to do. * *****************************************************************************/ static void PrUnTokenize ( char *Buffer, char *Next) { UINT32 Length = strlen (Buffer); if (!Next) { return; } if (Buffer[Length] != '\n') { Buffer[strlen(Buffer)] = ' '; } } #endif /****************************************************************************** * * FUNCTION: PrExpandMacros * * PARAMETERS: Line - Pointer into the current line * * RETURN: Updated pointer into the current line * * DESCRIPTION: Expand any macros found in the current line buffer. * *****************************************************************************/ static char * PrExpandMacros ( char *Line) { char *Token; char *ReplaceString; PR_DEFINE_INFO *DefineInfo; ACPI_SIZE TokenOffset; char *Next; int OffsetAdjust; strcpy (AslGbl_ExpressionTokenBuffer, AslGbl_CurrentLineBuffer); Token = PrGetNextToken (AslGbl_ExpressionTokenBuffer, PR_EXPR_SEPARATORS, &Next); OffsetAdjust = 0; while (Token) { DefineInfo = PrMatchDefine (Token); if (DefineInfo) { if (DefineInfo->Body) { /* This is a macro. TBD: Is this allowed? */ DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID "Matched Macro: %s->%s\n", AslGbl_CurrentLineNumber, DefineInfo->Identifier, DefineInfo->Replacement); PrDoMacroInvocation (AslGbl_ExpressionTokenBuffer, Token, DefineInfo, &Next); } else { ReplaceString = DefineInfo->Replacement; /* Replace the name in the original line buffer */ TokenOffset = Token - AslGbl_ExpressionTokenBuffer + OffsetAdjust; PrReplaceData ( &AslGbl_CurrentLineBuffer[TokenOffset], strlen (Token), ReplaceString, strlen (ReplaceString)); /* Adjust for length difference between old and new name length */ OffsetAdjust += strlen (ReplaceString) - strlen (Token); DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID "Matched #define within expression: %s->%s\n", AslGbl_CurrentLineNumber, Token, *ReplaceString ? ReplaceString : "(NULL STRING)"); } } Token = PrGetNextToken (NULL, PR_EXPR_SEPARATORS, &Next); } return (Line); } /****************************************************************************** * * FUNCTION: PrIsDefined * * PARAMETERS: Identifier - Name to be resolved * * RETURN: 64-bit boolean integer value * * DESCRIPTION: Returns TRUE if the name is defined, FALSE otherwise (0). * *****************************************************************************/ UINT64 PrIsDefined ( char *Identifier) { UINT64 Value; PR_DEFINE_INFO *DefineInfo; DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID "**** Is defined?: %s\n", AslGbl_CurrentLineNumber, Identifier); Value = 0; /* Default is "Not defined" -- FALSE */ DefineInfo = PrMatchDefine (Identifier); if (DefineInfo) { Value = ACPI_UINT64_MAX; /* TRUE */ } DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID "[#if defined %s] resolved to: %8.8X%8.8X\n", AslGbl_CurrentLineNumber, Identifier, ACPI_FORMAT_UINT64 (Value)); return (Value); } /****************************************************************************** * * FUNCTION: PrResolveDefine * * PARAMETERS: Identifier - Name to be resolved * * RETURN: A 64-bit boolean integer value * * DESCRIPTION: Returns TRUE if the name is defined, FALSE otherwise (0). * *****************************************************************************/ UINT64 PrResolveDefine ( char *Identifier) { UINT64 Value; PR_DEFINE_INFO *DefineInfo; DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID "**** Resolve #define: %s\n", AslGbl_CurrentLineNumber, Identifier); Value = 0; /* Default is "Not defined" -- FALSE */ DefineInfo = PrMatchDefine (Identifier); if (DefineInfo) { Value = ACPI_UINT64_MAX; /* TRUE */ } DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID "[#if defined %s] resolved to: %8.8X%8.8X\n", AslGbl_CurrentLineNumber, Identifier, ACPI_FORMAT_UINT64 (Value)); return (Value); } /****************************************************************************** * * FUNCTION: PrResolveIntegerExpression * * PARAMETERS: Line - Pointer to integer expression * ReturnValue - Where the resolved 64-bit integer is * returned. * * RETURN: Status * * DESCRIPTION: Resolve an integer expression to a single value. Supports * both integer constants and labels. * *****************************************************************************/ ACPI_STATUS PrResolveIntegerExpression ( char *Line, UINT64 *ReturnValue) { UINT64 Result; char *ExpandedLine; DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID "**** Resolve #if: %s\n", AslGbl_CurrentLineNumber, Line); /* Expand all macros within the expression first */ ExpandedLine = PrExpandMacros (Line); /* Now we can evaluate the expression */ Result = PrEvaluateExpression (ExpandedLine); DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID "**** Expression Resolved to: %8.8X%8.8X\n", AslGbl_CurrentLineNumber, ACPI_FORMAT_UINT64 (Result)); *ReturnValue = Result; return (AE_OK); #if 0 InvalidExpression: ACPI_FREE (EvalBuffer); PrError (ASL_ERROR, ASL_MSG_INVALID_EXPRESSION, 0); return (AE_ERROR); NormalExit: DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID "**** Expression Resolved to: %8.8X%8.8X\n", AslGbl_CurrentLineNumber, ACPI_FORMAT_UINT64 (Value1)); *ReturnValue = Value1; return (AE_OK); #endif }