dtparser.y revision 229989
1220604Sjkim%{ 2220604Sjkim/****************************************************************************** 3220604Sjkim * 4220604Sjkim * Module Name: dtparser.y - Bison input file for table compiler parser 5220604Sjkim * 6220604Sjkim *****************************************************************************/ 7220604Sjkim 8220604Sjkim/* 9229989Sjkim * Copyright (C) 2000 - 2012, Intel Corp. 10220604Sjkim * All rights reserved. 11220604Sjkim * 12220604Sjkim * Redistribution and use in source and binary forms, with or without 13220604Sjkim * modification, are permitted provided that the following conditions 14220604Sjkim * are met: 15220604Sjkim * 1. Redistributions of source code must retain the above copyright 16220604Sjkim * notice, this list of conditions, and the following disclaimer, 17220604Sjkim * without modification. 18220604Sjkim * 2. Redistributions in binary form must reproduce at minimum a disclaimer 19220604Sjkim * substantially similar to the "NO WARRANTY" disclaimer below 20220604Sjkim * ("Disclaimer") and any redistribution must be conditioned upon 21220604Sjkim * including a substantially similar Disclaimer requirement for further 22220604Sjkim * binary redistribution. 23220604Sjkim * 3. Neither the names of the above-listed copyright holders nor the names 24220604Sjkim * of any contributors may be used to endorse or promote products derived 25220604Sjkim * from this software without specific prior written permission. 26220604Sjkim * 27220604Sjkim * Alternatively, this software may be distributed under the terms of the 28220604Sjkim * GNU General Public License ("GPL") version 2 as published by the Free 29220604Sjkim * Software Foundation. 30220604Sjkim * 31220604Sjkim * NO WARRANTY 32220604Sjkim * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 33220604Sjkim * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 34220604Sjkim * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 35220604Sjkim * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 36220604Sjkim * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37220604Sjkim * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38220604Sjkim * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39220604Sjkim * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 40220604Sjkim * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 41220604Sjkim * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 42220604Sjkim * POSSIBILITY OF SUCH DAMAGES. 43220604Sjkim */ 44220604Sjkim 45220663Sjkim#include <contrib/dev/acpica/compiler/aslcompiler.h> 46220663Sjkim#include <contrib/dev/acpica/compiler/dtcompiler.h> 47220604Sjkim 48220681Sjkim#define _COMPONENT DT_COMPILER 49220604Sjkim ACPI_MODULE_NAME ("dtparser") 50220604Sjkim 51220681Sjkimint DtParserlex (void); 52220681Sjkimint DtParserparse (void); 53220681Sjkimvoid DtParsererror (char const *msg); 54220681Sjkimextern char *DtParsertext; 55220681Sjkimextern DT_FIELD *Gbl_CurrentField; 56220604Sjkim 57220681SjkimUINT64 DtParserResult; /* Expression return value */ 58220604Sjkim 59220681Sjkim/* Bison/yacc configuration */ 60220681Sjkim 61220681Sjkim#define yytname DtParsername 62220681Sjkim#define YYDEBUG 1 /* Enable debug output */ 63220681Sjkim#define YYERROR_VERBOSE 1 /* Verbose error messages */ 64220681Sjkim#define YYFLAG -32768 65220681Sjkim 66220604Sjkim%} 67220604Sjkim 68220604Sjkim%union 69220604Sjkim{ 70220604Sjkim UINT64 value; 71220604Sjkim UINT32 op; 72220604Sjkim} 73220604Sjkim 74220681Sjkim/*! [Begin] no source code translation */ 75220681Sjkim 76220604Sjkim%type <value> Expression 77220604Sjkim 78220604Sjkim%token <op> EXPOP_EOF 79220604Sjkim%token <op> EXPOP_NEW_LINE 80220604Sjkim%token <op> EXPOP_NUMBER 81220604Sjkim%token <op> EXPOP_HEX_NUMBER 82220604Sjkim%token <op> EXPOP_DECIMAL_NUMBER 83220604Sjkim%token <op> EXPOP_LABEL 84220604Sjkim%token <op> EXPOP_PAREN_OPEN 85220604Sjkim%token <op> EXPOP_PAREN_CLOSE 86220604Sjkim 87220604Sjkim%left <op> EXPOP_LOGICAL_OR 88220604Sjkim%left <op> EXPOP_LOGICAL_AND 89220604Sjkim%left <op> EXPOP_OR 90220604Sjkim%left <op> EXPOP_XOR 91220604Sjkim%left <op> EXPOP_AND 92220604Sjkim%left <op> EXPOP_EQUAL EXPOP_NOT_EQUAL 93220604Sjkim%left <op> EXPOP_GREATER EXPOP_LESS EXPOP_GREATER_EQUAL EXPOP_LESS_EQUAL 94220604Sjkim%left <op> EXPOP_SHIFT_RIGHT EXPOP_SHIFT_LEFT 95220604Sjkim%left <op> EXPOP_ADD EXPOP_SUBTRACT 96220604Sjkim%left <op> EXPOP_MULTIPLY EXPOP_DIVIDE EXPOP_MODULO 97220604Sjkim%right <op> EXPOP_ONES_COMPLIMENT EXPOP_LOGICAL_NOT 98220604Sjkim 99220604Sjkim%% 100220604Sjkim 101220604Sjkim/* 102220604Sjkim * Operator precedence rules (from K&R) 103220604Sjkim * 104220604Sjkim * 1) ( ) 105220604Sjkim * 2) ! ~ (unary operators that are supported here) 106220604Sjkim * 3) * / % 107220604Sjkim * 4) + - 108220604Sjkim * 5) >> << 109220604Sjkim * 6) < > <= >= 110220604Sjkim * 7) == != 111220604Sjkim * 8) & 112220604Sjkim * 9) ^ 113220604Sjkim * 10) | 114220604Sjkim * 11) && 115220604Sjkim * 12) || 116220604Sjkim */ 117220604SjkimValue 118220604Sjkim : Expression EXPOP_NEW_LINE { DtParserResult=$1; return 0; } /* End of line (newline) */ 119220604Sjkim | Expression EXPOP_EOF { DtParserResult=$1; return 0; } /* End of string (0) */ 120220604Sjkim ; 121220604Sjkim 122220604SjkimExpression 123220604Sjkim 124220604Sjkim /* Unary operators */ 125220604Sjkim 126220604Sjkim : EXPOP_LOGICAL_NOT Expression { $$ = DtDoOperator ($2, EXPOP_LOGICAL_NOT, $2);} 127220604Sjkim | EXPOP_ONES_COMPLIMENT Expression { $$ = DtDoOperator ($2, EXPOP_ONES_COMPLIMENT, $2);} 128220604Sjkim 129220604Sjkim /* Binary operators */ 130220604Sjkim 131220604Sjkim | Expression EXPOP_MULTIPLY Expression { $$ = DtDoOperator ($1, EXPOP_MULTIPLY, $3);} 132220604Sjkim | Expression EXPOP_DIVIDE Expression { $$ = DtDoOperator ($1, EXPOP_DIVIDE, $3);} 133220604Sjkim | Expression EXPOP_MODULO Expression { $$ = DtDoOperator ($1, EXPOP_MODULO, $3);} 134220604Sjkim | Expression EXPOP_ADD Expression { $$ = DtDoOperator ($1, EXPOP_ADD, $3);} 135220604Sjkim | Expression EXPOP_SUBTRACT Expression { $$ = DtDoOperator ($1, EXPOP_SUBTRACT, $3);} 136220604Sjkim | Expression EXPOP_SHIFT_RIGHT Expression { $$ = DtDoOperator ($1, EXPOP_SHIFT_RIGHT, $3);} 137220604Sjkim | Expression EXPOP_SHIFT_LEFT Expression { $$ = DtDoOperator ($1, EXPOP_SHIFT_LEFT, $3);} 138220604Sjkim | Expression EXPOP_GREATER Expression { $$ = DtDoOperator ($1, EXPOP_GREATER, $3);} 139220604Sjkim | Expression EXPOP_LESS Expression { $$ = DtDoOperator ($1, EXPOP_LESS, $3);} 140220604Sjkim | Expression EXPOP_GREATER_EQUAL Expression { $$ = DtDoOperator ($1, EXPOP_GREATER_EQUAL, $3);} 141220604Sjkim | Expression EXPOP_LESS_EQUAL Expression { $$ = DtDoOperator ($1, EXPOP_LESS_EQUAL, $3);} 142220604Sjkim | Expression EXPOP_EQUAL Expression { $$ = DtDoOperator ($1, EXPOP_EQUAL, $3);} 143220604Sjkim | Expression EXPOP_NOT_EQUAL Expression { $$ = DtDoOperator ($1, EXPOP_NOT_EQUAL, $3);} 144220604Sjkim | Expression EXPOP_AND Expression { $$ = DtDoOperator ($1, EXPOP_AND, $3);} 145220604Sjkim | Expression EXPOP_XOR Expression { $$ = DtDoOperator ($1, EXPOP_XOR, $3);} 146220604Sjkim | Expression EXPOP_OR Expression { $$ = DtDoOperator ($1, EXPOP_OR, $3);} 147220604Sjkim | Expression EXPOP_LOGICAL_AND Expression { $$ = DtDoOperator ($1, EXPOP_LOGICAL_AND, $3);} 148220604Sjkim | Expression EXPOP_LOGICAL_OR Expression { $$ = DtDoOperator ($1, EXPOP_LOGICAL_OR, $3);} 149220604Sjkim 150220604Sjkim /* Parentheses: '(' Expression ')' */ 151220604Sjkim 152220604Sjkim | EXPOP_PAREN_OPEN Expression 153220604Sjkim EXPOP_PAREN_CLOSE { $$ = $2;} 154220604Sjkim 155220604Sjkim /* Label references (prefixed with $) */ 156220604Sjkim 157220604Sjkim | EXPOP_LABEL { $$ = DtResolveLabel (DtParsertext);} 158220604Sjkim 159220604Sjkim /* Default base for a non-prefixed integer is 16 */ 160220604Sjkim 161220604Sjkim | EXPOP_NUMBER { UtStrtoul64 (DtParsertext, 16, &$$);} 162220604Sjkim 163220604Sjkim /* Standard hex number (0x1234) */ 164220604Sjkim 165220604Sjkim | EXPOP_HEX_NUMBER { UtStrtoul64 (DtParsertext, 16, &$$);} 166220604Sjkim 167220604Sjkim /* TBD: Decimal number with prefix (0d1234) - Not supported by UtStrtoul64 at this time */ 168220604Sjkim 169220604Sjkim | EXPOP_DECIMAL_NUMBER { UtStrtoul64 (DtParsertext, 10, &$$);} 170220604Sjkim ; 171220604Sjkim%% 172220604Sjkim 173220681Sjkim/*! [End] no source code translation !*/ 174220681Sjkim 175220604Sjkim/* 176220604Sjkim * Local support functions, including parser entry point 177220604Sjkim */ 178220604Sjkim#define PR_FIRST_PARSE_OPCODE EXPOP_EOF 179220604Sjkim#define PR_YYTNAME_START 3 180220604Sjkim 181220604Sjkim 182220604Sjkim/****************************************************************************** 183220604Sjkim * 184220604Sjkim * FUNCTION: DtParsererror 185220604Sjkim * 186220604Sjkim * PARAMETERS: Message - Parser-generated error message 187220604Sjkim * 188220604Sjkim * RETURN: None 189220604Sjkim * 190220604Sjkim * DESCRIPTION: Handler for parser errors 191220604Sjkim * 192220604Sjkim *****************************************************************************/ 193220604Sjkim 194220604Sjkimvoid 195220604SjkimDtParsererror ( 196220604Sjkim char const *Message) 197220604Sjkim{ 198220604Sjkim DtError (ASL_ERROR, ASL_MSG_SYNTAX, 199220604Sjkim Gbl_CurrentField, (char *) Message); 200220604Sjkim} 201220604Sjkim 202220604Sjkim 203220604Sjkim/****************************************************************************** 204220604Sjkim * 205220604Sjkim * FUNCTION: DtGetOpName 206220604Sjkim * 207220604Sjkim * PARAMETERS: ParseOpcode - Parser token (EXPOP_*) 208220604Sjkim * 209220604Sjkim * RETURN: Pointer to the opcode name 210220604Sjkim * 211220604Sjkim * DESCRIPTION: Get the ascii name of the parse opcode for debug output 212220604Sjkim * 213220604Sjkim *****************************************************************************/ 214220604Sjkim 215220604Sjkimchar * 216220604SjkimDtGetOpName ( 217220604Sjkim UINT32 ParseOpcode) 218220604Sjkim{ 219220681Sjkim#ifdef ASL_YYTNAME_START 220220604Sjkim /* 221220604Sjkim * First entries (PR_YYTNAME_START) in yytname are special reserved names. 222220604Sjkim * Ignore first 6 characters of name (EXPOP_) 223220604Sjkim */ 224220604Sjkim return ((char *) yytname 225220604Sjkim [(ParseOpcode - PR_FIRST_PARSE_OPCODE) + PR_YYTNAME_START] + 6); 226220681Sjkim#else 227220681Sjkim return ("[Unknown parser generator]"); 228220681Sjkim#endif 229220604Sjkim} 230220604Sjkim 231220604Sjkim 232220604Sjkim/****************************************************************************** 233220604Sjkim * 234220604Sjkim * FUNCTION: DtEvaluateExpression 235220604Sjkim * 236220604Sjkim * PARAMETERS: ExprString - Expression to be evaluated. Must be 237220604Sjkim * terminated by either a newline or a NUL 238220604Sjkim * string terminator 239220604Sjkim * 240220604Sjkim * RETURN: 64-bit value for the expression 241220604Sjkim * 242220604Sjkim * DESCRIPTION: Main entry point for the DT expression parser 243220604Sjkim * 244220604Sjkim *****************************************************************************/ 245220604Sjkim 246220604SjkimUINT64 247220604SjkimDtEvaluateExpression ( 248220604Sjkim char *ExprString) 249220604Sjkim{ 250220604Sjkim 251220604Sjkim DbgPrint (ASL_DEBUG_OUTPUT, 252220604Sjkim "**** Input expression: %s (Base 16)\n", ExprString); 253220604Sjkim 254220604Sjkim /* Point lexer to the input string */ 255220604Sjkim 256220604Sjkim if (DtInitLexer (ExprString)) 257220604Sjkim { 258220604Sjkim DtError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, 259220604Sjkim Gbl_CurrentField, "Could not initialize lexer"); 260220604Sjkim return (0); 261220604Sjkim } 262220604Sjkim 263220604Sjkim /* Parse/Evaluate the input string (value returned in DtParserResult) */ 264220604Sjkim 265220604Sjkim DtParserparse (); 266220604Sjkim DtTerminateLexer (); 267220604Sjkim 268220604Sjkim DbgPrint (ASL_DEBUG_OUTPUT, 269220604Sjkim "**** Parser returned value: %u (%8.8X%8.8X)\n", 270220604Sjkim (UINT32) DtParserResult, ACPI_FORMAT_UINT64 (DtParserResult)); 271220604Sjkim 272220604Sjkim return (DtParserResult); 273220604Sjkim} 274