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Diffstat (limited to 'sys/contrib/dev/acpica/compiler/dtparser.y')
| -rw-r--r-- | sys/contrib/dev/acpica/compiler/dtparser.y | 398 |
1 files changed, 398 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/compiler/dtparser.y b/sys/contrib/dev/acpica/compiler/dtparser.y new file mode 100644 index 000000000000..dfe8e2b2abff --- /dev/null +++ b/sys/contrib/dev/acpica/compiler/dtparser.y @@ -0,0 +1,398 @@ +%{ +/****************************************************************************** + * + * Module Name: dtparser.y - Bison input file for table compiler parser + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2020, 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 <contrib/dev/acpica/compiler/aslcompiler.h> + +#define _COMPONENT DT_COMPILER + ACPI_MODULE_NAME ("dtparser") + +void * AslLocalAllocate (unsigned int Size); + +/* Bison/yacc configuration */ + +#undef alloca +#define alloca AslLocalAllocate + +int DtParserlex (void); +int DtParserparse (void); +void DtParsererror (char const *msg); +extern char *DtParsertext; +extern DT_FIELD *AslGbl_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 + +/* Define YYMALLOC/YYFREE to prevent redefinition errors */ + +#define YYMALLOC malloc +#define YYFREE free +%} + +%union +{ + UINT64 value; + UINT32 op; +} + +/*! [Begin] no source code translation */ + +%type <value> Expression + +%token <op> OP_EXP_EOF +%token <op> OP_EXP_NEW_LINE +%token <op> OP_EXP_NUMBER +%token <op> OP_EXP_HEX_NUMBER +%token <op> OP_EXP_DECIMAL_NUMBER +%token <op> OP_EXP_LABEL +%token <op> OP_EXP_PAREN_OPEN +%token <op> OP_EXP_PAREN_CLOSE + +%left <op> OP_EXP_LOGICAL_OR +%left <op> OP_EXP_LOGICAL_AND +%left <op> OP_EXP_OR +%left <op> OP_EXP_XOR +%left <op> OP_EXP_AND +%left <op> OP_EXP_EQUAL OP_EXP_NOT_EQUAL +%left <op> OP_EXP_GREATER OP_EXP_LESS OP_EXP_GREATER_EQUAL OP_EXP_LESS_EQUAL +%left <op> OP_EXP_SHIFT_RIGHT OP_EXP_SHIFT_LEFT +%left <op> OP_EXP_ADD OP_EXP_SUBTRACT +%left <op> OP_EXP_MULTIPLY OP_EXP_DIVIDE OP_EXP_MODULO +%right <op> OP_EXP_ONES_COMPLIMENT OP_EXP_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 OP_EXP_NEW_LINE { DtParserResult=$1; return 0; } /* End of line (newline) */ + | Expression OP_EXP_EOF { DtParserResult=$1; return 0; } /* End of string (0) */ + ; + +Expression + + /* Unary operators */ + + : OP_EXP_LOGICAL_NOT Expression { $$ = DtDoOperator ($2, OP_EXP_LOGICAL_NOT, $2);} + | OP_EXP_ONES_COMPLIMENT Expression { $$ = DtDoOperator ($2, OP_EXP_ONES_COMPLIMENT, $2);} + + /* Binary operators */ + + | Expression OP_EXP_MULTIPLY Expression { $$ = DtDoOperator ($1, OP_EXP_MULTIPLY, $3);} + | Expression OP_EXP_DIVIDE Expression { $$ = DtDoOperator ($1, OP_EXP_DIVIDE, $3);} + | Expression OP_EXP_MODULO Expression { $$ = DtDoOperator ($1, OP_EXP_MODULO, $3);} + | Expression OP_EXP_ADD Expression { $$ = DtDoOperator ($1, OP_EXP_ADD, $3);} + | Expression OP_EXP_SUBTRACT Expression { $$ = DtDoOperator ($1, OP_EXP_SUBTRACT, $3);} + | Expression OP_EXP_SHIFT_RIGHT Expression { $$ = DtDoOperator ($1, OP_EXP_SHIFT_RIGHT, $3);} + | Expression OP_EXP_SHIFT_LEFT Expression { $$ = DtDoOperator ($1, OP_EXP_SHIFT_LEFT, $3);} + | Expression OP_EXP_GREATER Expression { $$ = DtDoOperator ($1, OP_EXP_GREATER, $3);} + | Expression OP_EXP_LESS Expression { $$ = DtDoOperator ($1, OP_EXP_LESS, $3);} + | Expression OP_EXP_GREATER_EQUAL Expression { $$ = DtDoOperator ($1, OP_EXP_GREATER_EQUAL, $3);} + | Expression OP_EXP_LESS_EQUAL Expression { $$ = DtDoOperator ($1, OP_EXP_LESS_EQUAL, $3);} + | Expression OP_EXP_EQUAL Expression { $$ = DtDoOperator ($1, OP_EXP_EQUAL, $3);} + | Expression OP_EXP_NOT_EQUAL Expression { $$ = DtDoOperator ($1, OP_EXP_NOT_EQUAL, $3);} + | Expression OP_EXP_AND Expression { $$ = DtDoOperator ($1, OP_EXP_AND, $3);} + | Expression OP_EXP_XOR Expression { $$ = DtDoOperator ($1, OP_EXP_XOR, $3);} + | Expression OP_EXP_OR Expression { $$ = DtDoOperator ($1, OP_EXP_OR, $3);} + | Expression OP_EXP_LOGICAL_AND Expression { $$ = DtDoOperator ($1, OP_EXP_LOGICAL_AND, $3);} + | Expression OP_EXP_LOGICAL_OR Expression { $$ = DtDoOperator ($1, OP_EXP_LOGICAL_OR, $3);} + + /* Parentheses: '(' Expression ')' */ + + | OP_EXP_PAREN_OPEN Expression + OP_EXP_PAREN_CLOSE { $$ = $2;} + + /* Label references (prefixed with $) */ + + | OP_EXP_LABEL { $$ = DtResolveLabel (DtParsertext);} + + /* + * All constants for the data table compiler are in hex, whether a (optional) 0x + * prefix is present or not. For example, these two input strings are equivalent: + * 1234 + * 0x1234 + */ + + /* Non-prefixed hex number */ + + | OP_EXP_NUMBER { $$ = DtDoConstant (DtParsertext);} + + /* Standard hex number (0x1234) */ + + | OP_EXP_HEX_NUMBER { $$ = DtDoConstant (DtParsertext);} + + /* Possible TBD: Decimal number with prefix (0d1234) - Not supported this time */ + + | OP_EXP_DECIMAL_NUMBER { $$ = DtDoConstant (DtParsertext);} + ; +%% + +/*! [End] no source code translation !*/ + +/* + * Local support functions, including parser entry point + */ +#define PR_FIRST_PARSE_OPCODE OP_EXP_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, + AslGbl_CurrentField, (char *) Message); +} + + +/****************************************************************************** + * + * FUNCTION: DtGetOpName + * + * PARAMETERS: ParseOpcode - Parser token (OP_EXP_*) + * + * 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 (OP_EXP_) + */ + 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, + AslGbl_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); +} |