kolibrios/drivers/devman/acpica/compiler/dtparser.y
Sergey Semyonov (Serge) 8ec96e9db0 update acpica
git-svn-id: svn://kolibrios.org@2216 a494cfbc-eb01-0410-851d-a64ba20cac60
2011-09-20 16:54:11 +00:00

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%{
/******************************************************************************
*
* Module Name: dtparser.y - Bison input file for table compiler parser
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 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.
*
*****************************************************************************/
#include "aslcompiler.h"
#include "dtcompiler.h"
#define _COMPONENT DT_COMPILER
ACPI_MODULE_NAME ("dtparser")
int DtParserlex (void);
int DtParserparse (void);
void DtParsererror (char const *msg);
extern char *DtParsertext;
extern DT_FIELD *Gbl_CurrentField;
UINT64 DtParserResult; /* Expression return value */
/* Bison/yacc configuration */
#define yytname DtParsername
#define YYDEBUG 1 /* Enable debug output */
#define YYERROR_VERBOSE 1 /* Verbose error messages */
#define YYFLAG -32768
%}
%union
{
UINT64 value;
UINT32 op;
}
/*! [Begin] no source code translation */
%type <value> Expression
%token <op> EXPOP_EOF
%token <op> EXPOP_NEW_LINE
%token <op> EXPOP_NUMBER
%token <op> EXPOP_HEX_NUMBER
%token <op> EXPOP_DECIMAL_NUMBER
%token <op> EXPOP_LABEL
%token <op> EXPOP_PAREN_OPEN
%token <op> EXPOP_PAREN_CLOSE
%left <op> EXPOP_LOGICAL_OR
%left <op> EXPOP_LOGICAL_AND
%left <op> EXPOP_OR
%left <op> EXPOP_XOR
%left <op> EXPOP_AND
%left <op> EXPOP_EQUAL EXPOP_NOT_EQUAL
%left <op> EXPOP_GREATER EXPOP_LESS EXPOP_GREATER_EQUAL EXPOP_LESS_EQUAL
%left <op> EXPOP_SHIFT_RIGHT EXPOP_SHIFT_LEFT
%left <op> EXPOP_ADD EXPOP_SUBTRACT
%left <op> EXPOP_MULTIPLY EXPOP_DIVIDE EXPOP_MODULO
%right <op> EXPOP_ONES_COMPLIMENT EXPOP_LOGICAL_NOT
%%
/*
* Operator precedence rules (from K&R)
*
* 1) ( )
* 2) ! ~ (unary operators that are supported here)
* 3) * / %
* 4) + -
* 5) >> <<
* 6) < > <= >=
* 7) == !=
* 8) &
* 9) ^
* 10) |
* 11) &&
* 12) ||
*/
Value
: Expression EXPOP_NEW_LINE { DtParserResult=$1; return 0; } /* End of line (newline) */
| Expression EXPOP_EOF { DtParserResult=$1; return 0; } /* End of string (0) */
;
Expression
/* Unary operators */
: EXPOP_LOGICAL_NOT Expression { $$ = DtDoOperator ($2, EXPOP_LOGICAL_NOT, $2);}
| EXPOP_ONES_COMPLIMENT Expression { $$ = DtDoOperator ($2, EXPOP_ONES_COMPLIMENT, $2);}
/* Binary operators */
| Expression EXPOP_MULTIPLY Expression { $$ = DtDoOperator ($1, EXPOP_MULTIPLY, $3);}
| Expression EXPOP_DIVIDE Expression { $$ = DtDoOperator ($1, EXPOP_DIVIDE, $3);}
| Expression EXPOP_MODULO Expression { $$ = DtDoOperator ($1, EXPOP_MODULO, $3);}
| Expression EXPOP_ADD Expression { $$ = DtDoOperator ($1, EXPOP_ADD, $3);}
| Expression EXPOP_SUBTRACT Expression { $$ = DtDoOperator ($1, EXPOP_SUBTRACT, $3);}
| Expression EXPOP_SHIFT_RIGHT Expression { $$ = DtDoOperator ($1, EXPOP_SHIFT_RIGHT, $3);}
| Expression EXPOP_SHIFT_LEFT Expression { $$ = DtDoOperator ($1, EXPOP_SHIFT_LEFT, $3);}
| Expression EXPOP_GREATER Expression { $$ = DtDoOperator ($1, EXPOP_GREATER, $3);}
| Expression EXPOP_LESS Expression { $$ = DtDoOperator ($1, EXPOP_LESS, $3);}
| Expression EXPOP_GREATER_EQUAL Expression { $$ = DtDoOperator ($1, EXPOP_GREATER_EQUAL, $3);}
| Expression EXPOP_LESS_EQUAL Expression { $$ = DtDoOperator ($1, EXPOP_LESS_EQUAL, $3);}
| Expression EXPOP_EQUAL Expression { $$ = DtDoOperator ($1, EXPOP_EQUAL, $3);}
| Expression EXPOP_NOT_EQUAL Expression { $$ = DtDoOperator ($1, EXPOP_NOT_EQUAL, $3);}
| Expression EXPOP_AND Expression { $$ = DtDoOperator ($1, EXPOP_AND, $3);}
| Expression EXPOP_XOR Expression { $$ = DtDoOperator ($1, EXPOP_XOR, $3);}
| Expression EXPOP_OR Expression { $$ = DtDoOperator ($1, EXPOP_OR, $3);}
| Expression EXPOP_LOGICAL_AND Expression { $$ = DtDoOperator ($1, EXPOP_LOGICAL_AND, $3);}
| Expression EXPOP_LOGICAL_OR Expression { $$ = DtDoOperator ($1, EXPOP_LOGICAL_OR, $3);}
/* Parentheses: '(' Expression ')' */
| EXPOP_PAREN_OPEN Expression
EXPOP_PAREN_CLOSE { $$ = $2;}
/* Label references (prefixed with $) */
| EXPOP_LABEL { $$ = DtResolveLabel (DtParsertext);}
/* Default base for a non-prefixed integer is 16 */
| EXPOP_NUMBER { UtStrtoul64 (DtParsertext, 16, &$$);}
/* Standard hex number (0x1234) */
| EXPOP_HEX_NUMBER { UtStrtoul64 (DtParsertext, 16, &$$);}
/* TBD: Decimal number with prefix (0d1234) - Not supported by UtStrtoul64 at this time */
| EXPOP_DECIMAL_NUMBER { UtStrtoul64 (DtParsertext, 10, &$$);}
;
%%
/*! [End] no source code translation !*/
/*
* Local support functions, including parser entry point
*/
#define PR_FIRST_PARSE_OPCODE EXPOP_EOF
#define PR_YYTNAME_START 3
/******************************************************************************
*
* FUNCTION: DtParsererror
*
* PARAMETERS: Message - Parser-generated error message
*
* RETURN: None
*
* DESCRIPTION: Handler for parser errors
*
*****************************************************************************/
void
DtParsererror (
char const *Message)
{
DtError (ASL_ERROR, ASL_MSG_SYNTAX,
Gbl_CurrentField, (char *) Message);
}
/******************************************************************************
*
* FUNCTION: DtGetOpName
*
* PARAMETERS: ParseOpcode - Parser token (EXPOP_*)
*
* RETURN: Pointer to the opcode name
*
* DESCRIPTION: Get the ascii name of the parse opcode for debug output
*
*****************************************************************************/
char *
DtGetOpName (
UINT32 ParseOpcode)
{
#ifdef ASL_YYTNAME_START
/*
* First entries (PR_YYTNAME_START) in yytname are special reserved names.
* Ignore first 6 characters of name (EXPOP_)
*/
return ((char *) yytname
[(ParseOpcode - PR_FIRST_PARSE_OPCODE) + PR_YYTNAME_START] + 6);
#else
return ("[Unknown parser generator]");
#endif
}
/******************************************************************************
*
* FUNCTION: DtEvaluateExpression
*
* PARAMETERS: ExprString - Expression to be evaluated. Must be
* terminated by either a newline or a NUL
* string terminator
*
* RETURN: 64-bit value for the expression
*
* DESCRIPTION: Main entry point for the DT expression parser
*
*****************************************************************************/
UINT64
DtEvaluateExpression (
char *ExprString)
{
DbgPrint (ASL_DEBUG_OUTPUT,
"**** Input expression: %s (Base 16)\n", ExprString);
/* Point lexer to the input string */
if (DtInitLexer (ExprString))
{
DtError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL,
Gbl_CurrentField, "Could not initialize lexer");
return (0);
}
/* Parse/Evaluate the input string (value returned in DtParserResult) */
DtParserparse ();
DtTerminateLexer ();
DbgPrint (ASL_DEBUG_OUTPUT,
"**** Parser returned value: %u (%8.8X%8.8X)\n",
(UINT32) DtParserResult, ACPI_FORMAT_UINT64 (DtParserResult));
return (DtParserResult);
}