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Diffstat (limited to 'sys/contrib/dev/acpica/compiler/prexpress.c')
| -rw-r--r-- | sys/contrib/dev/acpica/compiler/prexpress.c | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/compiler/prexpress.c b/sys/contrib/dev/acpica/compiler/prexpress.c new file mode 100644 index 0000000..c0dccd9 --- /dev/null +++ b/sys/contrib/dev/acpica/compiler/prexpress.c @@ -0,0 +1,305 @@ +/****************************************************************************** + * + * Module Name: prexpress - Preprocessor #if expression support + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2012, 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 <contrib/dev/acpica/compiler/aslcompiler.h> +#include <contrib/dev/acpica/compiler/dtcompiler.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 (Gbl_ExpressionTokenBuffer, Gbl_CurrentLineBuffer); + Token = PrGetNextToken (Gbl_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", + Gbl_CurrentLineNumber, DefineInfo->Identifier, + DefineInfo->Replacement); + + PrDoMacroInvocation (Gbl_ExpressionTokenBuffer, Token, + DefineInfo, &Next); + } + else + { + ReplaceString = DefineInfo->Replacement; + + /* Replace the name in the original line buffer */ + + TokenOffset = Token - Gbl_ExpressionTokenBuffer + OffsetAdjust; + PrReplaceData ( + &Gbl_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", + Gbl_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", Gbl_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", + Gbl_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", Gbl_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", + Gbl_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", Gbl_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", + Gbl_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", + Gbl_CurrentLineNumber, ACPI_FORMAT_UINT64 (Value1)); + + *ReturnValue = Value1; + return (AE_OK); +#endif +} |
