346 lines
14 KiB
Plaintext
346 lines
14 KiB
Plaintext
%{
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/******************************************************************************
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*
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* Module Name: dtparser.y - Bison input file for table compiler parser
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*
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*****************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#include "aslcompiler.h"
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#include "dtcompiler.h"
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#define _COMPONENT DT_COMPILER
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ACPI_MODULE_NAME ("dtparser")
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int DtParserlex (void);
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int DtParserparse (void);
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void DtParsererror (char const *msg);
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extern char *DtParsertext;
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extern DT_FIELD *Gbl_CurrentField;
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UINT64 DtParserResult; /* Expression return value */
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/* Bison/yacc configuration */
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#define yytname DtParsername
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#define YYDEBUG 1 /* Enable debug output */
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#define YYERROR_VERBOSE 1 /* Verbose error messages */
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#define YYFLAG -32768
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%}
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%union
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{
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UINT64 value;
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UINT32 op;
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}
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/*! [Begin] no source code translation */
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%type <value> Expression
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%token <op> EXPOP_EOF
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%token <op> EXPOP_NEW_LINE
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%token <op> EXPOP_NUMBER
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%token <op> EXPOP_HEX_NUMBER
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%token <op> EXPOP_DECIMAL_NUMBER
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%token <op> EXPOP_LABEL
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%token <op> EXPOP_PAREN_OPEN
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%token <op> EXPOP_PAREN_CLOSE
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%left <op> EXPOP_LOGICAL_OR
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%left <op> EXPOP_LOGICAL_AND
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%left <op> EXPOP_OR
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%left <op> EXPOP_XOR
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%left <op> EXPOP_AND
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%left <op> EXPOP_EQUAL EXPOP_NOT_EQUAL
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%left <op> EXPOP_GREATER EXPOP_LESS EXPOP_GREATER_EQUAL EXPOP_LESS_EQUAL
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%left <op> EXPOP_SHIFT_RIGHT EXPOP_SHIFT_LEFT
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%left <op> EXPOP_ADD EXPOP_SUBTRACT
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%left <op> EXPOP_MULTIPLY EXPOP_DIVIDE EXPOP_MODULO
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%right <op> EXPOP_ONES_COMPLIMENT EXPOP_LOGICAL_NOT
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%%
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/*
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* Operator precedence rules (from K&R)
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*
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* 1) ( )
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* 2) ! ~ (unary operators that are supported here)
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* 3) * / %
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* 4) + -
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* 5) >> <<
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* 6) < > <= >=
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* 7) == !=
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* 8) &
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* 9) ^
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* 10) |
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* 11) &&
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* 12) ||
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*/
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Value
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: Expression EXPOP_NEW_LINE { DtParserResult=$1; return 0; } /* End of line (newline) */
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| Expression EXPOP_EOF { DtParserResult=$1; return 0; } /* End of string (0) */
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;
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Expression
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/* Unary operators */
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: EXPOP_LOGICAL_NOT Expression { $$ = DtDoOperator ($2, EXPOP_LOGICAL_NOT, $2);}
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| EXPOP_ONES_COMPLIMENT Expression { $$ = DtDoOperator ($2, EXPOP_ONES_COMPLIMENT, $2);}
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/* Binary operators */
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| Expression EXPOP_MULTIPLY Expression { $$ = DtDoOperator ($1, EXPOP_MULTIPLY, $3);}
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| Expression EXPOP_DIVIDE Expression { $$ = DtDoOperator ($1, EXPOP_DIVIDE, $3);}
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| Expression EXPOP_MODULO Expression { $$ = DtDoOperator ($1, EXPOP_MODULO, $3);}
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| Expression EXPOP_ADD Expression { $$ = DtDoOperator ($1, EXPOP_ADD, $3);}
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| Expression EXPOP_SUBTRACT Expression { $$ = DtDoOperator ($1, EXPOP_SUBTRACT, $3);}
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| Expression EXPOP_SHIFT_RIGHT Expression { $$ = DtDoOperator ($1, EXPOP_SHIFT_RIGHT, $3);}
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| Expression EXPOP_SHIFT_LEFT Expression { $$ = DtDoOperator ($1, EXPOP_SHIFT_LEFT, $3);}
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| Expression EXPOP_GREATER Expression { $$ = DtDoOperator ($1, EXPOP_GREATER, $3);}
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| Expression EXPOP_LESS Expression { $$ = DtDoOperator ($1, EXPOP_LESS, $3);}
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| Expression EXPOP_GREATER_EQUAL Expression { $$ = DtDoOperator ($1, EXPOP_GREATER_EQUAL, $3);}
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| Expression EXPOP_LESS_EQUAL Expression { $$ = DtDoOperator ($1, EXPOP_LESS_EQUAL, $3);}
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| Expression EXPOP_EQUAL Expression { $$ = DtDoOperator ($1, EXPOP_EQUAL, $3);}
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| Expression EXPOP_NOT_EQUAL Expression { $$ = DtDoOperator ($1, EXPOP_NOT_EQUAL, $3);}
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| Expression EXPOP_AND Expression { $$ = DtDoOperator ($1, EXPOP_AND, $3);}
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| Expression EXPOP_XOR Expression { $$ = DtDoOperator ($1, EXPOP_XOR, $3);}
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| Expression EXPOP_OR Expression { $$ = DtDoOperator ($1, EXPOP_OR, $3);}
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| Expression EXPOP_LOGICAL_AND Expression { $$ = DtDoOperator ($1, EXPOP_LOGICAL_AND, $3);}
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| Expression EXPOP_LOGICAL_OR Expression { $$ = DtDoOperator ($1, EXPOP_LOGICAL_OR, $3);}
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/* Parentheses: '(' Expression ')' */
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| EXPOP_PAREN_OPEN Expression
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EXPOP_PAREN_CLOSE { $$ = $2;}
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/* Label references (prefixed with $) */
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| EXPOP_LABEL { $$ = DtResolveLabel (DtParsertext);}
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/* Default base for a non-prefixed integer is 16 */
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| EXPOP_NUMBER { UtStrtoul64 (DtParsertext, 16, &$$);}
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/* Standard hex number (0x1234) */
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| EXPOP_HEX_NUMBER { UtStrtoul64 (DtParsertext, 16, &$$);}
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/* TBD: Decimal number with prefix (0d1234) - Not supported by UtStrtoul64 at this time */
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| EXPOP_DECIMAL_NUMBER { UtStrtoul64 (DtParsertext, 10, &$$);}
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;
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%%
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/*! [End] no source code translation !*/
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/*
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* Local support functions, including parser entry point
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*/
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#define PR_FIRST_PARSE_OPCODE EXPOP_EOF
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#define PR_YYTNAME_START 3
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/******************************************************************************
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*
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* FUNCTION: DtParsererror
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*
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* PARAMETERS: Message - Parser-generated error message
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*
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* RETURN: None
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*
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* DESCRIPTION: Handler for parser errors
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*
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*****************************************************************************/
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void
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DtParsererror (
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char const *Message)
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{
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DtError (ASL_ERROR, ASL_MSG_SYNTAX,
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Gbl_CurrentField, (char *) Message);
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}
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/******************************************************************************
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*
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* FUNCTION: DtGetOpName
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*
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* PARAMETERS: ParseOpcode - Parser token (EXPOP_*)
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*
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* RETURN: Pointer to the opcode name
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*
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* DESCRIPTION: Get the ascii name of the parse opcode for debug output
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*
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*****************************************************************************/
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char *
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DtGetOpName (
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UINT32 ParseOpcode)
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{
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#ifdef ASL_YYTNAME_START
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/*
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* First entries (PR_YYTNAME_START) in yytname are special reserved names.
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* Ignore first 6 characters of name (EXPOP_)
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*/
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return ((char *) yytname
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[(ParseOpcode - PR_FIRST_PARSE_OPCODE) + PR_YYTNAME_START] + 6);
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#else
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return ("[Unknown parser generator]");
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#endif
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}
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/******************************************************************************
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*
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* FUNCTION: DtEvaluateExpression
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*
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* PARAMETERS: ExprString - Expression to be evaluated. Must be
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* terminated by either a newline or a NUL
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* string terminator
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*
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* RETURN: 64-bit value for the expression
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*
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* DESCRIPTION: Main entry point for the DT expression parser
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*
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*****************************************************************************/
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UINT64
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DtEvaluateExpression (
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char *ExprString)
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{
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DbgPrint (ASL_DEBUG_OUTPUT,
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"**** Input expression: %s (Base 16)\n", ExprString);
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/* Point lexer to the input string */
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if (DtInitLexer (ExprString))
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{
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DtError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL,
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Gbl_CurrentField, "Could not initialize lexer");
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return (0);
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}
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/* Parse/Evaluate the input string (value returned in DtParserResult) */
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DtParserparse ();
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DtTerminateLexer ();
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DbgPrint (ASL_DEBUG_OUTPUT,
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"**** Parser returned value: %u (%8.8X%8.8X)\n",
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(UINT32) DtParserResult, ACPI_FORMAT_UINT64 (DtParserResult));
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return (DtParserResult);
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}
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