1991-09-19 12:31:00 +02:00
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/* YACC grammar for Modula-2 expressions, for GDB.
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Copyright (C) 1986, 1989, 1990, 1991 Free Software Foundation, Inc.
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Generated from expread.y (now c-exp.y) and contributed by the Department
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of Computer Science at the State University of New York at Buffalo, 1991.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Parse a Modula-2 expression from text in a string,
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and return the result as a struct expression pointer.
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That structure contains arithmetic operations in reverse polish,
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with constants represented by operations that are followed by special data.
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See expression.h for the details of the format.
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What is important here is that it can be built up sequentially
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during the process of parsing; the lower levels of the tree always
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come first in the result. */
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%{
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#include <stdio.h>
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#include <string.h>
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#include "defs.h"
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#include "symtab.h"
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1992-02-22 02:46:16 +01:00
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#include "gdbtypes.h"
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1991-09-19 12:31:00 +02:00
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#include "frame.h"
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#include "expression.h"
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#include "language.h"
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1991-09-28 03:30:41 +02:00
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#include "value.h"
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1991-09-19 12:31:00 +02:00
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#include "parser-defs.h"
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1992-04-02 12:35:19 +02:00
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#include "bfd.h"
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#include "symfile.h"
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#include "objfiles.h"
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1991-09-19 12:31:00 +02:00
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1992-06-10 04:05:20 +02:00
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/* These MUST be included in any grammar file!!!! Please choose unique names!
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Note that this are a combined list of variables that can be produced
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by any one of bison, byacc, or yacc. */
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1991-11-19 16:59:55 +01:00
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#define yymaxdepth m2_maxdepth
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1991-09-19 12:31:00 +02:00
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#define yyparse m2_parse
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#define yylex m2_lex
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#define yyerror m2_error
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#define yylval m2_lval
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#define yychar m2_char
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#define yydebug m2_debug
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#define yypact m2_pact
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#define yyr1 m2_r1
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#define yyr2 m2_r2
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#define yydef m2_def
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#define yychk m2_chk
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#define yypgo m2_pgo
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#define yyact m2_act
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#define yyexca m2_exca
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1991-09-20 21:30:36 +02:00
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#define yyerrflag m2_errflag
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#define yynerrs m2_nerrs
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1991-09-28 03:30:41 +02:00
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#define yyps m2_ps
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#define yypv m2_pv
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#define yys m2_s
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1991-11-19 16:59:55 +01:00
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#define yy_yys m2_yys
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1991-09-28 03:30:41 +02:00
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#define yystate m2_state
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#define yytmp m2_tmp
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#define yyv m2_v
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1991-11-19 16:59:55 +01:00
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#define yy_yyv m2_yyv
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1991-09-28 03:30:41 +02:00
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#define yyval m2_val
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#define yylloc m2_lloc
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1992-06-10 04:05:20 +02:00
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#define yyss m2_yyss /* byacc */
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#define yyssp m2_yysp /* byacc */
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#define yyvs m2_yyvs /* byacc */
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#define yyvsp m2_yyvsp /* byacc */
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1991-09-19 12:31:00 +02:00
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1992-03-30 01:26:47 +02:00
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#if 0
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1992-02-22 02:46:16 +01:00
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static char *
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make_qualname PARAMS ((char *, char *));
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1992-03-30 01:26:47 +02:00
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#endif
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1992-02-22 02:46:16 +01:00
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static int
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parse_number PARAMS ((int));
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static int
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yylex PARAMS ((void));
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static void
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yyerror PARAMS ((char *));
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int
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yyparse PARAMS ((void));
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1991-09-19 12:31:00 +02:00
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/* The sign of the number being parsed. */
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int number_sign = 1;
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/* The block that the module specified by the qualifer on an identifer is
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contained in, */
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struct block *modblock=0;
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/* #define YYDEBUG 1 */
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%}
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/* Although the yacc "value" of an expression is not used,
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since the result is stored in the structure being created,
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other node types do have values. */
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%union
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{
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LONGEST lval;
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unsigned LONGEST ulval;
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double dval;
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struct symbol *sym;
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struct type *tval;
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struct stoken sval;
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int voidval;
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struct block *bval;
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enum exp_opcode opcode;
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struct internalvar *ivar;
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struct type **tvec;
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int *ivec;
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}
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%type <voidval> exp type_exp start set
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%type <voidval> variable
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%type <tval> type
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%type <bval> block
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%type <sym> fblock
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%token <lval> INT HEX ERROR
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1992-07-09 13:47:50 +02:00
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%token <ulval> UINT M2_TRUE M2_FALSE CHAR
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1991-09-19 12:31:00 +02:00
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%token <dval> FLOAT
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/* Both NAME and TYPENAME tokens represent symbols in the input,
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and both convey their data as strings.
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But a TYPENAME is a string that happens to be defined as a typedef
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or builtin type name (such as int or char)
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and a NAME is any other symbol.
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Contexts where this distinction is not important can use the
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nonterminal "name", which matches either NAME or TYPENAME. */
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%token <sval> STRING
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1992-02-20 20:23:42 +01:00
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%token <sval> NAME BLOCKNAME IDENT VARNAME
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1991-09-19 12:31:00 +02:00
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%token <sval> TYPENAME
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1991-11-23 06:26:22 +01:00
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%token SIZE CAP ORD HIGH ABS MIN_FUNC MAX_FUNC FLOAT_FUNC VAL CHR ODD TRUNC
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1991-09-19 12:31:00 +02:00
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%token INC DEC INCL EXCL
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/* The GDB scope operator */
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%token COLONCOLON
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%token <lval> LAST REGNAME
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%token <ivar> INTERNAL_VAR
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/* M2 tokens */
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%left ','
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%left ABOVE_COMMA
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%nonassoc ASSIGN
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%left '<' '>' LEQ GEQ '=' NOTEQUAL '#' IN
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1992-02-20 20:23:42 +01:00
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%left OROR
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%left ANDAND '&'
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1991-09-19 12:31:00 +02:00
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%left '@'
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%left '+' '-'
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%left '*' '/' DIV MOD
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%right UNARY
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%right '^' DOT '[' '('
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%right NOT '~'
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%left COLONCOLON QID
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/* This is not an actual token ; it is used for precedence.
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%right QID
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*/
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1992-06-10 04:05:20 +02:00
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%{
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/* Ensure that if the generated parser contains any calls to malloc/realloc,
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that they get mapped to xmalloc/xrealloc. We have to do this here
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rather than earlier in the file because this is the first point after
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the place where the SVR4 yacc includes <malloc.h>, and if we do it
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before that, then the remapped declarations in <malloc.h> will collide
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with the ones in "defs.h". */
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#define malloc xmalloc
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#define realloc xrealloc
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%}
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1992-07-09 13:47:50 +02:00
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%%
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1991-09-19 12:31:00 +02:00
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start : exp
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;
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type_exp: type
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{ write_exp_elt_opcode(OP_TYPE);
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write_exp_elt_type($1);
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write_exp_elt_opcode(OP_TYPE);
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}
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;
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/* Expressions */
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exp : exp '^' %prec UNARY
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{ write_exp_elt_opcode (UNOP_IND); }
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exp : '-'
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{ number_sign = -1; }
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exp %prec UNARY
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{ number_sign = 1;
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write_exp_elt_opcode (UNOP_NEG); }
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;
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exp : '+' exp %prec UNARY
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{ write_exp_elt_opcode(UNOP_PLUS); }
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;
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exp : not_exp exp %prec UNARY
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{ write_exp_elt_opcode (UNOP_ZEROP); }
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;
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not_exp : NOT
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;
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exp : CAP '(' exp ')'
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{ write_exp_elt_opcode (UNOP_CAP); }
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;
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exp : ORD '(' exp ')'
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{ write_exp_elt_opcode (UNOP_ORD); }
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;
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exp : ABS '(' exp ')'
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{ write_exp_elt_opcode (UNOP_ABS); }
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;
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exp : HIGH '(' exp ')'
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{ write_exp_elt_opcode (UNOP_HIGH); }
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;
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1991-11-23 06:26:22 +01:00
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exp : MIN_FUNC '(' type ')'
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1991-09-19 12:31:00 +02:00
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{ write_exp_elt_opcode (UNOP_MIN);
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write_exp_elt_type ($3);
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write_exp_elt_opcode (UNOP_MIN); }
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;
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1991-11-23 06:26:22 +01:00
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exp : MAX_FUNC '(' type ')'
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1991-09-19 12:31:00 +02:00
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{ write_exp_elt_opcode (UNOP_MAX);
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write_exp_elt_type ($3);
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write_exp_elt_opcode (UNOP_MIN); }
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;
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exp : FLOAT_FUNC '(' exp ')'
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{ write_exp_elt_opcode (UNOP_FLOAT); }
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;
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exp : VAL '(' type ',' exp ')'
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{ write_exp_elt_opcode (BINOP_VAL);
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write_exp_elt_type ($3);
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write_exp_elt_opcode (BINOP_VAL); }
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;
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exp : CHR '(' exp ')'
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{ write_exp_elt_opcode (UNOP_CHR); }
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;
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exp : ODD '(' exp ')'
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{ write_exp_elt_opcode (UNOP_ODD); }
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;
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exp : TRUNC '(' exp ')'
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{ write_exp_elt_opcode (UNOP_TRUNC); }
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;
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exp : SIZE exp %prec UNARY
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{ write_exp_elt_opcode (UNOP_SIZEOF); }
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;
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exp : INC '(' exp ')'
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{ write_exp_elt_opcode(UNOP_PREINCREMENT); }
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;
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exp : INC '(' exp ',' exp ')'
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{ write_exp_elt_opcode(BINOP_ASSIGN_MODIFY);
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write_exp_elt_opcode(BINOP_ADD);
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write_exp_elt_opcode(BINOP_ASSIGN_MODIFY); }
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;
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exp : DEC '(' exp ')'
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{ write_exp_elt_opcode(UNOP_PREDECREMENT);}
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;
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exp : DEC '(' exp ',' exp ')'
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{ write_exp_elt_opcode(BINOP_ASSIGN_MODIFY);
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write_exp_elt_opcode(BINOP_SUB);
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write_exp_elt_opcode(BINOP_ASSIGN_MODIFY); }
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;
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exp : exp DOT NAME
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{ write_exp_elt_opcode (STRUCTOP_STRUCT);
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write_exp_string ($3);
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write_exp_elt_opcode (STRUCTOP_STRUCT); }
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;
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exp : set
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;
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exp : exp IN set
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{ error("Sets are not implemented.");}
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;
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|
exp : INCL '(' exp ',' exp ')'
|
|
|
|
|
{ error("Sets are not implemented.");}
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : EXCL '(' exp ',' exp ')'
|
|
|
|
|
{ error("Sets are not implemented.");}
|
|
|
|
|
|
|
|
|
|
set : '{' arglist '}'
|
|
|
|
|
{ error("Sets are not implemented.");}
|
|
|
|
|
| type '{' arglist '}'
|
|
|
|
|
{ error("Sets are not implemented.");}
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Modula-2 array subscript notation [a,b,c...] */
|
|
|
|
|
exp : exp '['
|
|
|
|
|
/* This function just saves the number of arguments
|
|
|
|
|
that follow in the list. It is *not* specific to
|
|
|
|
|
function types */
|
|
|
|
|
{ start_arglist(); }
|
|
|
|
|
non_empty_arglist ']' %prec DOT
|
|
|
|
|
{ write_exp_elt_opcode (BINOP_MULTI_SUBSCRIPT);
|
|
|
|
|
write_exp_elt_longcst ((LONGEST) end_arglist());
|
|
|
|
|
write_exp_elt_opcode (BINOP_MULTI_SUBSCRIPT); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : exp '('
|
|
|
|
|
/* This is to save the value of arglist_len
|
|
|
|
|
being accumulated by an outer function call. */
|
|
|
|
|
{ start_arglist (); }
|
|
|
|
|
arglist ')' %prec DOT
|
|
|
|
|
{ write_exp_elt_opcode (OP_FUNCALL);
|
|
|
|
|
write_exp_elt_longcst ((LONGEST) end_arglist ());
|
|
|
|
|
write_exp_elt_opcode (OP_FUNCALL); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
arglist :
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
arglist : exp
|
|
|
|
|
{ arglist_len = 1; }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
arglist : arglist ',' exp %prec ABOVE_COMMA
|
|
|
|
|
{ arglist_len++; }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
non_empty_arglist
|
|
|
|
|
: exp
|
|
|
|
|
{ arglist_len = 1; }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
non_empty_arglist
|
|
|
|
|
: non_empty_arglist ',' exp %prec ABOVE_COMMA
|
|
|
|
|
{ arglist_len++; }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
/* GDB construct */
|
|
|
|
|
exp : '{' type '}' exp %prec UNARY
|
|
|
|
|
{ write_exp_elt_opcode (UNOP_MEMVAL);
|
|
|
|
|
write_exp_elt_type ($2);
|
|
|
|
|
write_exp_elt_opcode (UNOP_MEMVAL); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : type '(' exp ')' %prec UNARY
|
|
|
|
|
{ write_exp_elt_opcode (UNOP_CAST);
|
|
|
|
|
write_exp_elt_type ($1);
|
|
|
|
|
write_exp_elt_opcode (UNOP_CAST); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : '(' exp ')'
|
|
|
|
|
{ }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
/* Binary operators in order of decreasing precedence. Note that some
|
|
|
|
|
of these operators are overloaded! (ie. sets) */
|
|
|
|
|
|
|
|
|
|
/* GDB construct */
|
|
|
|
|
exp : exp '@' exp
|
|
|
|
|
{ write_exp_elt_opcode (BINOP_REPEAT); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : exp '*' exp
|
|
|
|
|
{ write_exp_elt_opcode (BINOP_MUL); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : exp '/' exp
|
|
|
|
|
{ write_exp_elt_opcode (BINOP_DIV); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : exp DIV exp
|
|
|
|
|
{ write_exp_elt_opcode (BINOP_INTDIV); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : exp MOD exp
|
|
|
|
|
{ write_exp_elt_opcode (BINOP_REM); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : exp '+' exp
|
|
|
|
|
{ write_exp_elt_opcode (BINOP_ADD); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : exp '-' exp
|
|
|
|
|
{ write_exp_elt_opcode (BINOP_SUB); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : exp '=' exp
|
|
|
|
|
{ write_exp_elt_opcode (BINOP_EQUAL); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : exp NOTEQUAL exp
|
|
|
|
|
{ write_exp_elt_opcode (BINOP_NOTEQUAL); }
|
|
|
|
|
| exp '#' exp
|
|
|
|
|
{ write_exp_elt_opcode (BINOP_NOTEQUAL); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : exp LEQ exp
|
|
|
|
|
{ write_exp_elt_opcode (BINOP_LEQ); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : exp GEQ exp
|
|
|
|
|
{ write_exp_elt_opcode (BINOP_GEQ); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : exp '<' exp
|
|
|
|
|
{ write_exp_elt_opcode (BINOP_LESS); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : exp '>' exp
|
|
|
|
|
{ write_exp_elt_opcode (BINOP_GTR); }
|
|
|
|
|
;
|
|
|
|
|
|
1992-02-20 20:23:42 +01:00
|
|
|
|
exp : exp ANDAND exp
|
1991-09-19 12:31:00 +02:00
|
|
|
|
{ write_exp_elt_opcode (BINOP_AND); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : exp '&' exp
|
|
|
|
|
{ write_exp_elt_opcode (BINOP_AND); }
|
|
|
|
|
;
|
|
|
|
|
|
1992-02-20 20:23:42 +01:00
|
|
|
|
exp : exp OROR exp
|
1991-09-19 12:31:00 +02:00
|
|
|
|
{ write_exp_elt_opcode (BINOP_OR); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : exp ASSIGN exp
|
|
|
|
|
{ write_exp_elt_opcode (BINOP_ASSIGN); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Constants */
|
|
|
|
|
|
1992-07-09 13:47:50 +02:00
|
|
|
|
exp : M2_TRUE
|
1991-09-19 12:31:00 +02:00
|
|
|
|
{ write_exp_elt_opcode (OP_BOOL);
|
|
|
|
|
write_exp_elt_longcst ((LONGEST) $1);
|
|
|
|
|
write_exp_elt_opcode (OP_BOOL); }
|
|
|
|
|
;
|
|
|
|
|
|
1992-07-09 13:47:50 +02:00
|
|
|
|
exp : M2_FALSE
|
1991-09-19 12:31:00 +02:00
|
|
|
|
{ write_exp_elt_opcode (OP_BOOL);
|
|
|
|
|
write_exp_elt_longcst ((LONGEST) $1);
|
|
|
|
|
write_exp_elt_opcode (OP_BOOL); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : INT
|
|
|
|
|
{ write_exp_elt_opcode (OP_LONG);
|
|
|
|
|
write_exp_elt_type (builtin_type_m2_int);
|
|
|
|
|
write_exp_elt_longcst ((LONGEST) $1);
|
|
|
|
|
write_exp_elt_opcode (OP_LONG); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : UINT
|
|
|
|
|
{
|
|
|
|
|
write_exp_elt_opcode (OP_LONG);
|
|
|
|
|
write_exp_elt_type (builtin_type_m2_card);
|
|
|
|
|
write_exp_elt_longcst ((LONGEST) $1);
|
|
|
|
|
write_exp_elt_opcode (OP_LONG);
|
|
|
|
|
}
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : CHAR
|
|
|
|
|
{ write_exp_elt_opcode (OP_LONG);
|
|
|
|
|
write_exp_elt_type (builtin_type_m2_char);
|
|
|
|
|
write_exp_elt_longcst ((LONGEST) $1);
|
|
|
|
|
write_exp_elt_opcode (OP_LONG); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
exp : FLOAT
|
|
|
|
|
{ write_exp_elt_opcode (OP_DOUBLE);
|
|
|
|
|
write_exp_elt_type (builtin_type_m2_real);
|
|
|
|
|
write_exp_elt_dblcst ($1);
|
|
|
|
|
write_exp_elt_opcode (OP_DOUBLE); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : variable
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
/* The GDB internal variable $$, et al. */
|
|
|
|
|
exp : LAST
|
|
|
|
|
{ write_exp_elt_opcode (OP_LAST);
|
|
|
|
|
write_exp_elt_longcst ((LONGEST) $1);
|
|
|
|
|
write_exp_elt_opcode (OP_LAST); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : REGNAME
|
|
|
|
|
{ write_exp_elt_opcode (OP_REGISTER);
|
|
|
|
|
write_exp_elt_longcst ((LONGEST) $1);
|
|
|
|
|
write_exp_elt_opcode (OP_REGISTER); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : SIZE '(' type ')' %prec UNARY
|
|
|
|
|
{ write_exp_elt_opcode (OP_LONG);
|
|
|
|
|
write_exp_elt_type (builtin_type_int);
|
|
|
|
|
write_exp_elt_longcst ((LONGEST) TYPE_LENGTH ($3));
|
|
|
|
|
write_exp_elt_opcode (OP_LONG); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
exp : STRING
|
|
|
|
|
{ write_exp_elt_opcode (OP_M2_STRING);
|
|
|
|
|
write_exp_string ($1);
|
|
|
|
|
write_exp_elt_opcode (OP_M2_STRING); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
/* This will be used for extensions later. Like adding modules. */
|
|
|
|
|
block : fblock
|
|
|
|
|
{ $$ = SYMBOL_BLOCK_VALUE($1); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
fblock : BLOCKNAME
|
|
|
|
|
{ struct symbol *sym
|
|
|
|
|
= lookup_symbol (copy_name ($1), expression_context_block,
|
|
|
|
|
VAR_NAMESPACE, 0, NULL);
|
|
|
|
|
$$ = sym;}
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* GDB scope operator */
|
|
|
|
|
fblock : block COLONCOLON BLOCKNAME
|
|
|
|
|
{ struct symbol *tem
|
|
|
|
|
= lookup_symbol (copy_name ($3), $1,
|
|
|
|
|
VAR_NAMESPACE, 0, NULL);
|
|
|
|
|
if (!tem || SYMBOL_CLASS (tem) != LOC_BLOCK)
|
|
|
|
|
error ("No function \"%s\" in specified context.",
|
|
|
|
|
copy_name ($3));
|
|
|
|
|
$$ = tem;
|
|
|
|
|
}
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
/* Useful for assigning to PROCEDURE variables */
|
|
|
|
|
variable: fblock
|
|
|
|
|
{ write_exp_elt_opcode(OP_VAR_VALUE);
|
|
|
|
|
write_exp_elt_sym ($1);
|
|
|
|
|
write_exp_elt_opcode (OP_VAR_VALUE); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
/* GDB internal ($foo) variable */
|
|
|
|
|
variable: INTERNAL_VAR
|
|
|
|
|
{ write_exp_elt_opcode (OP_INTERNALVAR);
|
|
|
|
|
write_exp_elt_intern ($1);
|
|
|
|
|
write_exp_elt_opcode (OP_INTERNALVAR); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
/* GDB scope operator */
|
|
|
|
|
variable: block COLONCOLON NAME
|
|
|
|
|
{ struct symbol *sym;
|
|
|
|
|
sym = lookup_symbol (copy_name ($3), $1,
|
|
|
|
|
VAR_NAMESPACE, 0, NULL);
|
|
|
|
|
if (sym == 0)
|
|
|
|
|
error ("No symbol \"%s\" in specified context.",
|
|
|
|
|
copy_name ($3));
|
|
|
|
|
|
|
|
|
|
write_exp_elt_opcode (OP_VAR_VALUE);
|
|
|
|
|
write_exp_elt_sym (sym);
|
|
|
|
|
write_exp_elt_opcode (OP_VAR_VALUE); }
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
/* Base case for variables. */
|
|
|
|
|
variable: NAME
|
|
|
|
|
{ struct symbol *sym;
|
|
|
|
|
int is_a_field_of_this;
|
|
|
|
|
|
|
|
|
|
sym = lookup_symbol (copy_name ($1),
|
|
|
|
|
expression_context_block,
|
|
|
|
|
VAR_NAMESPACE,
|
|
|
|
|
&is_a_field_of_this,
|
|
|
|
|
NULL);
|
|
|
|
|
if (sym)
|
|
|
|
|
{
|
|
|
|
|
switch (sym->class)
|
|
|
|
|
{
|
|
|
|
|
case LOC_REGISTER:
|
|
|
|
|
case LOC_ARG:
|
|
|
|
|
case LOC_LOCAL:
|
* defs.h: Incorporate param.h. All users changed.
* param-no-tm.h: Change users to define TM_FILE_OVERRIDE instead.
* param.h, param-no-tm.h: Removed.
* Update copyrights in all changed files.
* dbxread.c, dwarfread.c, inflow.c, infrun.c, m2-exp.y, putenv.c,
solib.c, symtab.h, tm-umax.h, valprint.c: Lint.
* tm-convex.h, tm-hp300hpux.h, tm-merlin.h, tm-sparc.h,
xm-merlin.h: Avoid host include files in target descriptions.
* getpagesize.h: Removed, libiberty copes now.
1991-11-21 19:42:05 +01:00
|
|
|
|
case LOC_REF_ARG:
|
|
|
|
|
case LOC_REGPARM:
|
|
|
|
|
case LOC_LOCAL_ARG:
|
1991-09-19 12:31:00 +02:00
|
|
|
|
if (innermost_block == 0 ||
|
|
|
|
|
contained_in (block_found,
|
|
|
|
|
innermost_block))
|
|
|
|
|
innermost_block = block_found;
|
* defs.h: Incorporate param.h. All users changed.
* param-no-tm.h: Change users to define TM_FILE_OVERRIDE instead.
* param.h, param-no-tm.h: Removed.
* Update copyrights in all changed files.
* dbxread.c, dwarfread.c, inflow.c, infrun.c, m2-exp.y, putenv.c,
solib.c, symtab.h, tm-umax.h, valprint.c: Lint.
* tm-convex.h, tm-hp300hpux.h, tm-merlin.h, tm-sparc.h,
xm-merlin.h: Avoid host include files in target descriptions.
* getpagesize.h: Removed, libiberty copes now.
1991-11-21 19:42:05 +01:00
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case LOC_UNDEF:
|
|
|
|
|
case LOC_CONST:
|
|
|
|
|
case LOC_STATIC:
|
|
|
|
|
case LOC_TYPEDEF:
|
|
|
|
|
case LOC_LABEL: /* maybe should go above? */
|
|
|
|
|
case LOC_BLOCK:
|
|
|
|
|
case LOC_CONST_BYTES:
|
|
|
|
|
/* These are listed so gcc -Wall will reveal
|
|
|
|
|
un-handled cases. */
|
|
|
|
|
break;
|
1991-09-19 12:31:00 +02:00
|
|
|
|
}
|
|
|
|
|
write_exp_elt_opcode (OP_VAR_VALUE);
|
|
|
|
|
write_exp_elt_sym (sym);
|
|
|
|
|
write_exp_elt_opcode (OP_VAR_VALUE);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
1992-02-22 02:46:16 +01:00
|
|
|
|
struct minimal_symbol *msymbol;
|
1991-09-19 12:31:00 +02:00
|
|
|
|
register char *arg = copy_name ($1);
|
|
|
|
|
|
1992-02-22 02:46:16 +01:00
|
|
|
|
msymbol = lookup_minimal_symbol (arg,
|
|
|
|
|
(struct objfile *) NULL);
|
|
|
|
|
if (msymbol != NULL)
|
1991-09-19 12:31:00 +02:00
|
|
|
|
{
|
|
|
|
|
write_exp_elt_opcode (OP_LONG);
|
|
|
|
|
write_exp_elt_type (builtin_type_int);
|
1992-02-22 02:46:16 +01:00
|
|
|
|
write_exp_elt_longcst ((LONGEST) msymbol -> address);
|
1991-09-19 12:31:00 +02:00
|
|
|
|
write_exp_elt_opcode (OP_LONG);
|
|
|
|
|
write_exp_elt_opcode (UNOP_MEMVAL);
|
1992-02-22 02:46:16 +01:00
|
|
|
|
if (msymbol -> type == mst_data ||
|
|
|
|
|
msymbol -> type == mst_bss)
|
1991-09-19 12:31:00 +02:00
|
|
|
|
write_exp_elt_type (builtin_type_int);
|
1992-02-22 02:46:16 +01:00
|
|
|
|
else if (msymbol -> type == mst_text)
|
1991-09-19 12:31:00 +02:00
|
|
|
|
write_exp_elt_type (lookup_function_type (builtin_type_int));
|
|
|
|
|
else
|
|
|
|
|
write_exp_elt_type (builtin_type_char);
|
|
|
|
|
write_exp_elt_opcode (UNOP_MEMVAL);
|
|
|
|
|
}
|
1992-02-22 02:46:16 +01:00
|
|
|
|
else if (!have_full_symbols () && !have_partial_symbols ())
|
1991-09-19 12:31:00 +02:00
|
|
|
|
error ("No symbol table is loaded. Use the \"symbol-file\" command.");
|
|
|
|
|
else
|
|
|
|
|
error ("No symbol \"%s\" in current context.",
|
|
|
|
|
copy_name ($1));
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
type
|
|
|
|
|
: TYPENAME
|
|
|
|
|
{ $$ = lookup_typename (copy_name ($1),
|
|
|
|
|
expression_context_block, 0); }
|
|
|
|
|
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
%%
|
|
|
|
|
|
|
|
|
|
#if 0 /* FIXME! */
|
|
|
|
|
int
|
|
|
|
|
overflow(a,b)
|
|
|
|
|
long a,b;
|
|
|
|
|
{
|
|
|
|
|
return (MAX_OF_TYPE(builtin_type_m2_int) - b) < a;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
|
uoverflow(a,b)
|
|
|
|
|
unsigned long a,b;
|
|
|
|
|
{
|
|
|
|
|
return (MAX_OF_TYPE(builtin_type_m2_card) - b) < a;
|
|
|
|
|
}
|
|
|
|
|
#endif /* FIXME */
|
|
|
|
|
|
|
|
|
|
/* Take care of parsing a number (anything that starts with a digit).
|
|
|
|
|
Set yylval and return the token type; update lexptr.
|
|
|
|
|
LEN is the number of characters in it. */
|
|
|
|
|
|
|
|
|
|
/*** Needs some error checking for the float case ***/
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
parse_number (olen)
|
|
|
|
|
int olen;
|
|
|
|
|
{
|
|
|
|
|
register char *p = lexptr;
|
|
|
|
|
register LONGEST n = 0;
|
|
|
|
|
register LONGEST prevn = 0;
|
|
|
|
|
register int c,i,ischar=0;
|
|
|
|
|
register int base = input_radix;
|
|
|
|
|
register int len = olen;
|
|
|
|
|
int unsigned_p = number_sign == 1 ? 1 : 0;
|
|
|
|
|
|
|
|
|
|
if(p[len-1] == 'H')
|
|
|
|
|
{
|
|
|
|
|
base = 16;
|
|
|
|
|
len--;
|
|
|
|
|
}
|
|
|
|
|
else if(p[len-1] == 'C' || p[len-1] == 'B')
|
|
|
|
|
{
|
|
|
|
|
base = 8;
|
|
|
|
|
ischar = p[len-1] == 'C';
|
|
|
|
|
len--;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Scan the number */
|
|
|
|
|
for (c = 0; c < len; c++)
|
|
|
|
|
{
|
|
|
|
|
if (p[c] == '.' && base == 10)
|
|
|
|
|
{
|
|
|
|
|
/* It's a float since it contains a point. */
|
|
|
|
|
yylval.dval = atof (p);
|
|
|
|
|
lexptr += len;
|
|
|
|
|
return FLOAT;
|
|
|
|
|
}
|
|
|
|
|
if (p[c] == '.' && base != 10)
|
|
|
|
|
error("Floating point numbers must be base 10.");
|
|
|
|
|
if (base == 10 && (p[c] < '0' || p[c] > '9'))
|
|
|
|
|
error("Invalid digit \'%c\' in number.",p[c]);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
while (len-- > 0)
|
|
|
|
|
{
|
|
|
|
|
c = *p++;
|
|
|
|
|
n *= base;
|
|
|
|
|
if( base == 8 && (c == '8' || c == '9'))
|
|
|
|
|
error("Invalid digit \'%c\' in octal number.",c);
|
|
|
|
|
if (c >= '0' && c <= '9')
|
|
|
|
|
i = c - '0';
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
if (base == 16 && c >= 'A' && c <= 'F')
|
|
|
|
|
i = c - 'A' + 10;
|
|
|
|
|
else
|
|
|
|
|
return ERROR;
|
|
|
|
|
}
|
|
|
|
|
n+=i;
|
|
|
|
|
if(i >= base)
|
|
|
|
|
return ERROR;
|
|
|
|
|
if(!unsigned_p && number_sign == 1 && (prevn >= n))
|
|
|
|
|
unsigned_p=1; /* Try something unsigned */
|
|
|
|
|
/* Don't do the range check if n==i and i==0, since that special
|
|
|
|
|
case will give an overflow error. */
|
|
|
|
|
if(RANGE_CHECK && n!=i && i)
|
|
|
|
|
{
|
|
|
|
|
if((unsigned_p && (unsigned)prevn >= (unsigned)n) ||
|
|
|
|
|
((!unsigned_p && number_sign==-1) && -prevn <= -n))
|
|
|
|
|
range_error("Overflow on numeric constant.");
|
|
|
|
|
}
|
|
|
|
|
prevn=n;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
lexptr = p;
|
|
|
|
|
if(*p == 'B' || *p == 'C' || *p == 'H')
|
|
|
|
|
lexptr++; /* Advance past B,C or H */
|
|
|
|
|
|
|
|
|
|
if (ischar)
|
|
|
|
|
{
|
|
|
|
|
yylval.ulval = n;
|
|
|
|
|
return CHAR;
|
|
|
|
|
}
|
|
|
|
|
else if ( unsigned_p && number_sign == 1)
|
|
|
|
|
{
|
|
|
|
|
yylval.ulval = n;
|
|
|
|
|
return UINT;
|
|
|
|
|
}
|
1991-09-19 13:51:26 +02:00
|
|
|
|
else if((unsigned_p && (n<0))) {
|
1991-09-19 12:31:00 +02:00
|
|
|
|
range_error("Overflow on numeric constant -- number too large.");
|
1991-09-19 13:51:26 +02:00
|
|
|
|
/* But, this can return if range_check == range_warn. */
|
1991-09-19 12:31:00 +02:00
|
|
|
|
}
|
1991-09-19 13:51:26 +02:00
|
|
|
|
yylval.lval = n;
|
|
|
|
|
return INT;
|
1991-09-19 12:31:00 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Some tokens */
|
|
|
|
|
|
|
|
|
|
static struct
|
|
|
|
|
{
|
|
|
|
|
char name[2];
|
|
|
|
|
int token;
|
|
|
|
|
} tokentab2[] =
|
|
|
|
|
{
|
1992-04-17 03:35:42 +02:00
|
|
|
|
{ {'<', '>'}, NOTEQUAL },
|
|
|
|
|
{ {':', '='}, ASSIGN },
|
|
|
|
|
{ {'<', '='}, LEQ },
|
|
|
|
|
{ {'>', '='}, GEQ },
|
|
|
|
|
{ {':', ':'}, COLONCOLON },
|
1991-09-19 12:31:00 +02:00
|
|
|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* Some specific keywords */
|
|
|
|
|
|
|
|
|
|
struct keyword {
|
|
|
|
|
char keyw[10];
|
|
|
|
|
int token;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
static struct keyword keytab[] =
|
|
|
|
|
{
|
1992-02-20 20:23:42 +01:00
|
|
|
|
{"OR" , OROR },
|
1991-09-19 12:31:00 +02:00
|
|
|
|
{"IN", IN },/* Note space after IN */
|
1992-02-20 20:23:42 +01:00
|
|
|
|
{"AND", ANDAND },
|
1991-09-19 12:31:00 +02:00
|
|
|
|
{"ABS", ABS },
|
|
|
|
|
{"CHR", CHR },
|
|
|
|
|
{"DEC", DEC },
|
|
|
|
|
{"NOT", NOT },
|
|
|
|
|
{"DIV", DIV },
|
|
|
|
|
{"INC", INC },
|
1991-11-23 06:26:22 +01:00
|
|
|
|
{"MAX", MAX_FUNC },
|
|
|
|
|
{"MIN", MIN_FUNC },
|
1991-09-19 12:31:00 +02:00
|
|
|
|
{"MOD", MOD },
|
|
|
|
|
{"ODD", ODD },
|
|
|
|
|
{"CAP", CAP },
|
|
|
|
|
{"ORD", ORD },
|
|
|
|
|
{"VAL", VAL },
|
|
|
|
|
{"EXCL", EXCL },
|
|
|
|
|
{"HIGH", HIGH },
|
|
|
|
|
{"INCL", INCL },
|
|
|
|
|
{"SIZE", SIZE },
|
|
|
|
|
{"FLOAT", FLOAT_FUNC },
|
|
|
|
|
{"TRUNC", TRUNC },
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Read one token, getting characters through lexptr. */
|
|
|
|
|
|
|
|
|
|
/* This is where we will check to make sure that the language and the operators used are
|
|
|
|
|
compatible */
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
yylex ()
|
|
|
|
|
{
|
|
|
|
|
register int c;
|
|
|
|
|
register int namelen;
|
|
|
|
|
register int i;
|
|
|
|
|
register char *tokstart;
|
|
|
|
|
register char quote;
|
|
|
|
|
|
|
|
|
|
retry:
|
|
|
|
|
|
|
|
|
|
tokstart = lexptr;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* See if it is a special token of length 2 */
|
|
|
|
|
for( i = 0 ; i < sizeof tokentab2 / sizeof tokentab2[0] ; i++)
|
|
|
|
|
if(!strncmp(tokentab2[i].name, tokstart, 2))
|
|
|
|
|
{
|
|
|
|
|
lexptr += 2;
|
|
|
|
|
return tokentab2[i].token;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
switch (c = *tokstart)
|
|
|
|
|
{
|
|
|
|
|
case 0:
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
case ' ':
|
|
|
|
|
case '\t':
|
|
|
|
|
case '\n':
|
|
|
|
|
lexptr++;
|
|
|
|
|
goto retry;
|
|
|
|
|
|
|
|
|
|
case '(':
|
|
|
|
|
paren_depth++;
|
|
|
|
|
lexptr++;
|
|
|
|
|
return c;
|
|
|
|
|
|
|
|
|
|
case ')':
|
|
|
|
|
if (paren_depth == 0)
|
|
|
|
|
return 0;
|
|
|
|
|
paren_depth--;
|
|
|
|
|
lexptr++;
|
|
|
|
|
return c;
|
|
|
|
|
|
|
|
|
|
case ',':
|
|
|
|
|
if (comma_terminates && paren_depth == 0)
|
|
|
|
|
return 0;
|
|
|
|
|
lexptr++;
|
|
|
|
|
return c;
|
|
|
|
|
|
|
|
|
|
case '.':
|
|
|
|
|
/* Might be a floating point number. */
|
|
|
|
|
if (lexptr[1] >= '0' && lexptr[1] <= '9')
|
|
|
|
|
break; /* Falls into number code. */
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
lexptr++;
|
|
|
|
|
return DOT;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* These are character tokens that appear as-is in the YACC grammar */
|
|
|
|
|
case '+':
|
|
|
|
|
case '-':
|
|
|
|
|
case '*':
|
|
|
|
|
case '/':
|
|
|
|
|
case '^':
|
|
|
|
|
case '<':
|
|
|
|
|
case '>':
|
|
|
|
|
case '[':
|
|
|
|
|
case ']':
|
|
|
|
|
case '=':
|
|
|
|
|
case '{':
|
|
|
|
|
case '}':
|
|
|
|
|
case '#':
|
|
|
|
|
case '@':
|
|
|
|
|
case '~':
|
|
|
|
|
case '&':
|
|
|
|
|
lexptr++;
|
|
|
|
|
return c;
|
|
|
|
|
|
|
|
|
|
case '\'' :
|
|
|
|
|
case '"':
|
|
|
|
|
quote = c;
|
|
|
|
|
for (namelen = 1; (c = tokstart[namelen]) != quote && c != '\0'; namelen++)
|
|
|
|
|
if (c == '\\')
|
|
|
|
|
{
|
|
|
|
|
c = tokstart[++namelen];
|
|
|
|
|
if (c >= '0' && c <= '9')
|
|
|
|
|
{
|
|
|
|
|
c = tokstart[++namelen];
|
|
|
|
|
if (c >= '0' && c <= '9')
|
|
|
|
|
c = tokstart[++namelen];
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
if(c != quote)
|
|
|
|
|
error("Unterminated string or character constant.");
|
|
|
|
|
yylval.sval.ptr = tokstart + 1;
|
|
|
|
|
yylval.sval.length = namelen - 1;
|
|
|
|
|
lexptr += namelen + 1;
|
|
|
|
|
|
|
|
|
|
if(namelen == 2) /* Single character */
|
|
|
|
|
{
|
|
|
|
|
yylval.ulval = tokstart[1];
|
|
|
|
|
return CHAR;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
return STRING;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Is it a number? */
|
|
|
|
|
/* Note: We have already dealt with the case of the token '.'.
|
|
|
|
|
See case '.' above. */
|
|
|
|
|
if ((c >= '0' && c <= '9'))
|
|
|
|
|
{
|
|
|
|
|
/* It's a number. */
|
|
|
|
|
int got_dot = 0, got_e = 0;
|
|
|
|
|
register char *p = tokstart;
|
|
|
|
|
int toktype;
|
|
|
|
|
|
|
|
|
|
for (++p ;; ++p)
|
|
|
|
|
{
|
|
|
|
|
if (!got_e && (*p == 'e' || *p == 'E'))
|
|
|
|
|
got_dot = got_e = 1;
|
|
|
|
|
else if (!got_dot && *p == '.')
|
|
|
|
|
got_dot = 1;
|
|
|
|
|
else if (got_e && (p[-1] == 'e' || p[-1] == 'E')
|
|
|
|
|
&& (*p == '-' || *p == '+'))
|
|
|
|
|
/* This is the sign of the exponent, not the end of the
|
|
|
|
|
number. */
|
|
|
|
|
continue;
|
|
|
|
|
else if ((*p < '0' || *p > '9') &&
|
|
|
|
|
(*p < 'A' || *p > 'F') &&
|
|
|
|
|
(*p != 'H')) /* Modula-2 hexadecimal number */
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
toktype = parse_number (p - tokstart);
|
|
|
|
|
if (toktype == ERROR)
|
|
|
|
|
{
|
|
|
|
|
char *err_copy = (char *) alloca (p - tokstart + 1);
|
|
|
|
|
|
* breakpoint.c, buildsym.c, c-exp.y, coffread.c, command.c,
core.c, cplus-dem.c, dbxread.c, dwarfread.c, elfread.c, environ.c,
eval.c, findvar.c, gdbtypes.c, hppabsd-tdep.c, hppahpux-tdep.c,
i386-tdep.c, ieee-float.c, infcmd.c, inflow.c, infptrace.c,
infrun.c, m2-exp.y, mipsread.c, objfiles.c, parse.c, procfs.c,
putenv.c, remote-mm.c, remote-vx.c, solib.c, sparc-tdep.c,
sparc-xdep.c, stack.c, symfile.c, symtab.c, symtab.h, target.c,
tm-i386v.h, tm-sparc.h, utils.c, valarith.c, valops.c, valprint.c,
values.c, xcoffread.c:
Remove "(void)" casts from function calls where the return value
is ignored, in accordance with GNU coding standards.
1992-07-04 05:22:08 +02:00
|
|
|
|
memcpy (err_copy, tokstart, p - tokstart);
|
1991-09-19 12:31:00 +02:00
|
|
|
|
err_copy[p - tokstart] = 0;
|
|
|
|
|
error ("Invalid number \"%s\".", err_copy);
|
|
|
|
|
}
|
|
|
|
|
lexptr = p;
|
|
|
|
|
return toktype;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!(c == '_' || c == '$'
|
|
|
|
|
|| (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')))
|
|
|
|
|
/* We must have come across a bad character (e.g. ';'). */
|
|
|
|
|
error ("Invalid character '%c' in expression.", c);
|
|
|
|
|
|
|
|
|
|
/* It's a name. See how long it is. */
|
|
|
|
|
namelen = 0;
|
|
|
|
|
for (c = tokstart[namelen];
|
|
|
|
|
(c == '_' || c == '$' || (c >= '0' && c <= '9')
|
|
|
|
|
|| (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'));
|
|
|
|
|
c = tokstart[++namelen])
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
/* The token "if" terminates the expression and is NOT
|
|
|
|
|
removed from the input stream. */
|
|
|
|
|
if (namelen == 2 && tokstart[0] == 'i' && tokstart[1] == 'f')
|
|
|
|
|
{
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
lexptr += namelen;
|
|
|
|
|
|
|
|
|
|
/* Handle the tokens $digits; also $ (short for $0) and $$ (short for $$1)
|
|
|
|
|
and $$digits (equivalent to $<-digits> if you could type that).
|
|
|
|
|
Make token type LAST, and put the number (the digits) in yylval. */
|
|
|
|
|
|
|
|
|
|
if (*tokstart == '$')
|
|
|
|
|
{
|
|
|
|
|
register int negate = 0;
|
|
|
|
|
c = 1;
|
|
|
|
|
/* Double dollar means negate the number and add -1 as well.
|
|
|
|
|
Thus $$ alone means -1. */
|
|
|
|
|
if (namelen >= 2 && tokstart[1] == '$')
|
|
|
|
|
{
|
|
|
|
|
negate = 1;
|
|
|
|
|
c = 2;
|
|
|
|
|
}
|
|
|
|
|
if (c == namelen)
|
|
|
|
|
{
|
|
|
|
|
/* Just dollars (one or two) */
|
|
|
|
|
yylval.lval = - negate;
|
|
|
|
|
return LAST;
|
|
|
|
|
}
|
|
|
|
|
/* Is the rest of the token digits? */
|
|
|
|
|
for (; c < namelen; c++)
|
|
|
|
|
if (!(tokstart[c] >= '0' && tokstart[c] <= '9'))
|
|
|
|
|
break;
|
|
|
|
|
if (c == namelen)
|
|
|
|
|
{
|
|
|
|
|
yylval.lval = atoi (tokstart + 1 + negate);
|
|
|
|
|
if (negate)
|
|
|
|
|
yylval.lval = - yylval.lval;
|
|
|
|
|
return LAST;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Handle tokens that refer to machine registers:
|
|
|
|
|
$ followed by a register name. */
|
|
|
|
|
|
|
|
|
|
if (*tokstart == '$') {
|
|
|
|
|
for (c = 0; c < NUM_REGS; c++)
|
|
|
|
|
if (namelen - 1 == strlen (reg_names[c])
|
|
|
|
|
&& !strncmp (tokstart + 1, reg_names[c], namelen - 1))
|
|
|
|
|
{
|
|
|
|
|
yylval.lval = c;
|
|
|
|
|
return REGNAME;
|
|
|
|
|
}
|
|
|
|
|
for (c = 0; c < num_std_regs; c++)
|
|
|
|
|
if (namelen - 1 == strlen (std_regs[c].name)
|
|
|
|
|
&& !strncmp (tokstart + 1, std_regs[c].name, namelen - 1))
|
|
|
|
|
{
|
|
|
|
|
yylval.lval = std_regs[c].regnum;
|
|
|
|
|
return REGNAME;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Lookup special keywords */
|
|
|
|
|
for(i = 0 ; i < sizeof(keytab) / sizeof(keytab[0]) ; i++)
|
|
|
|
|
if(namelen == strlen(keytab[i].keyw) && !strncmp(tokstart,keytab[i].keyw,namelen))
|
|
|
|
|
return keytab[i].token;
|
|
|
|
|
|
|
|
|
|
yylval.sval.ptr = tokstart;
|
|
|
|
|
yylval.sval.length = namelen;
|
|
|
|
|
|
|
|
|
|
/* Any other names starting in $ are debugger internal variables. */
|
|
|
|
|
|
|
|
|
|
if (*tokstart == '$')
|
|
|
|
|
{
|
|
|
|
|
yylval.ivar = (struct internalvar *) lookup_internalvar (copy_name (yylval.sval) + 1);
|
|
|
|
|
return INTERNAL_VAR;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Use token-type BLOCKNAME for symbols that happen to be defined as
|
|
|
|
|
functions. If this is not so, then ...
|
|
|
|
|
Use token-type TYPENAME for symbols that happen to be defined
|
|
|
|
|
currently as names of types; NAME for other symbols.
|
|
|
|
|
The caller is not constrained to care about the distinction. */
|
|
|
|
|
{
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
char *tmp = copy_name (yylval.sval);
|
|
|
|
|
struct symbol *sym;
|
|
|
|
|
|
|
|
|
|
if (lookup_partial_symtab (tmp))
|
|
|
|
|
return BLOCKNAME;
|
|
|
|
|
sym = lookup_symbol (tmp, expression_context_block,
|
|
|
|
|
VAR_NAMESPACE, 0, NULL);
|
|
|
|
|
if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK)
|
|
|
|
|
return BLOCKNAME;
|
|
|
|
|
if (lookup_typename (copy_name (yylval.sval), expression_context_block, 1))
|
|
|
|
|
return TYPENAME;
|
|
|
|
|
|
|
|
|
|
if(sym)
|
|
|
|
|
{
|
|
|
|
|
switch(sym->class)
|
|
|
|
|
{
|
|
|
|
|
case LOC_STATIC:
|
|
|
|
|
case LOC_REGISTER:
|
|
|
|
|
case LOC_ARG:
|
|
|
|
|
case LOC_REF_ARG:
|
|
|
|
|
case LOC_REGPARM:
|
|
|
|
|
case LOC_LOCAL:
|
|
|
|
|
case LOC_LOCAL_ARG:
|
|
|
|
|
case LOC_CONST:
|
|
|
|
|
case LOC_CONST_BYTES:
|
|
|
|
|
return NAME;
|
|
|
|
|
|
|
|
|
|
case LOC_TYPEDEF:
|
|
|
|
|
return TYPENAME;
|
|
|
|
|
|
|
|
|
|
case LOC_BLOCK:
|
|
|
|
|
return BLOCKNAME;
|
|
|
|
|
|
|
|
|
|
case LOC_UNDEF:
|
|
|
|
|
error("internal: Undefined class in m2lex()");
|
|
|
|
|
|
|
|
|
|
case LOC_LABEL:
|
|
|
|
|
error("internal: Unforseen case in m2lex()");
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* Built-in BOOLEAN type. This is sort of a hack. */
|
|
|
|
|
if(!strncmp(tokstart,"TRUE",4))
|
|
|
|
|
{
|
|
|
|
|
yylval.ulval = 1;
|
1992-07-09 13:47:50 +02:00
|
|
|
|
return M2_TRUE;
|
1991-09-19 12:31:00 +02:00
|
|
|
|
}
|
|
|
|
|
else if(!strncmp(tokstart,"FALSE",5))
|
|
|
|
|
{
|
|
|
|
|
yylval.ulval = 0;
|
1992-07-09 13:47:50 +02:00
|
|
|
|
return M2_FALSE;
|
1991-09-19 12:31:00 +02:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Must be another type of name... */
|
|
|
|
|
return NAME;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
1992-03-30 01:26:47 +02:00
|
|
|
|
#if 0 /* Unused */
|
1992-02-22 02:46:16 +01:00
|
|
|
|
static char *
|
1991-09-19 12:31:00 +02:00
|
|
|
|
make_qualname(mod,ident)
|
|
|
|
|
char *mod, *ident;
|
|
|
|
|
{
|
|
|
|
|
char *new = xmalloc(strlen(mod)+strlen(ident)+2);
|
|
|
|
|
|
|
|
|
|
strcpy(new,mod);
|
|
|
|
|
strcat(new,".");
|
|
|
|
|
strcat(new,ident);
|
|
|
|
|
return new;
|
|
|
|
|
}
|
1992-03-30 01:26:47 +02:00
|
|
|
|
#endif /* 0 */
|
1991-09-19 12:31:00 +02:00
|
|
|
|
|
1992-02-22 02:46:16 +01:00
|
|
|
|
static void
|
|
|
|
|
yyerror(msg)
|
|
|
|
|
char *msg; /* unused */
|
1991-09-19 12:31:00 +02:00
|
|
|
|
{
|
|
|
|
|
printf("Parsing: %s\n",lexptr);
|
|
|
|
|
if (yychar < 256)
|
|
|
|
|
error("Invalid syntax in expression near character '%c'.",yychar);
|
|
|
|
|
else
|
1991-09-20 00:16:40 +02:00
|
|
|
|
error("Invalid syntax in expression");
|
1991-09-19 12:31:00 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Table of operators and their precedences for printing expressions. */
|
|
|
|
|
|
|
|
|
|
const static struct op_print m2_op_print_tab[] = {
|
|
|
|
|
{"+", BINOP_ADD, PREC_ADD, 0},
|
|
|
|
|
{"+", UNOP_PLUS, PREC_PREFIX, 0},
|
|
|
|
|
{"-", BINOP_SUB, PREC_ADD, 0},
|
|
|
|
|
{"-", UNOP_NEG, PREC_PREFIX, 0},
|
|
|
|
|
{"*", BINOP_MUL, PREC_MUL, 0},
|
|
|
|
|
{"/", BINOP_DIV, PREC_MUL, 0},
|
|
|
|
|
{"DIV", BINOP_INTDIV, PREC_MUL, 0},
|
|
|
|
|
{"MOD", BINOP_REM, PREC_MUL, 0},
|
|
|
|
|
{":=", BINOP_ASSIGN, PREC_ASSIGN, 1},
|
|
|
|
|
{"OR", BINOP_OR, PREC_OR, 0},
|
|
|
|
|
{"AND", BINOP_AND, PREC_AND, 0},
|
|
|
|
|
{"NOT", UNOP_ZEROP, PREC_PREFIX, 0},
|
|
|
|
|
{"=", BINOP_EQUAL, PREC_EQUAL, 0},
|
|
|
|
|
{"<>", BINOP_NOTEQUAL, PREC_EQUAL, 0},
|
|
|
|
|
{"<=", BINOP_LEQ, PREC_ORDER, 0},
|
|
|
|
|
{">=", BINOP_GEQ, PREC_ORDER, 0},
|
|
|
|
|
{">", BINOP_GTR, PREC_ORDER, 0},
|
|
|
|
|
{"<", BINOP_LESS, PREC_ORDER, 0},
|
|
|
|
|
{"^", UNOP_IND, PREC_PREFIX, 0},
|
|
|
|
|
{"@", BINOP_REPEAT, PREC_REPEAT, 0},
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* The built-in types of Modula-2. */
|
|
|
|
|
|
|
|
|
|
struct type *builtin_type_m2_char;
|
|
|
|
|
struct type *builtin_type_m2_int;
|
|
|
|
|
struct type *builtin_type_m2_card;
|
|
|
|
|
struct type *builtin_type_m2_real;
|
|
|
|
|
struct type *builtin_type_m2_bool;
|
|
|
|
|
|
1991-09-19 13:51:26 +02:00
|
|
|
|
struct type ** const (m2_builtin_types[]) =
|
1991-09-19 12:31:00 +02:00
|
|
|
|
{
|
|
|
|
|
&builtin_type_m2_char,
|
|
|
|
|
&builtin_type_m2_int,
|
|
|
|
|
&builtin_type_m2_card,
|
|
|
|
|
&builtin_type_m2_real,
|
|
|
|
|
&builtin_type_m2_bool,
|
|
|
|
|
0
|
|
|
|
|
};
|
|
|
|
|
|
1991-09-19 13:51:26 +02:00
|
|
|
|
const struct language_defn m2_language_defn = {
|
1991-09-19 12:31:00 +02:00
|
|
|
|
"modula-2",
|
|
|
|
|
language_m2,
|
1991-09-19 13:51:26 +02:00
|
|
|
|
m2_builtin_types,
|
1991-09-19 12:31:00 +02:00
|
|
|
|
range_check_on,
|
|
|
|
|
type_check_on,
|
|
|
|
|
m2_parse, /* parser */
|
|
|
|
|
m2_error, /* parser error function */
|
|
|
|
|
&builtin_type_m2_int, /* longest signed integral type */
|
|
|
|
|
&builtin_type_m2_card, /* longest unsigned integral type */
|
|
|
|
|
&builtin_type_m2_real, /* longest floating point type */
|
|
|
|
|
"0%XH", "0%", "XH", /* Hex format string, prefix, suffix */
|
|
|
|
|
"%oB", "%", "oB", /* Octal format string, prefix, suffix */
|
|
|
|
|
m2_op_print_tab, /* expression operators for printing */
|
|
|
|
|
LANG_MAGIC
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* Initialization for Modula-2 */
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
_initialize_m2_exp ()
|
|
|
|
|
{
|
|
|
|
|
/* Modula-2 "pervasive" types. NOTE: these can be redefined!!! */
|
1992-02-22 02:46:16 +01:00
|
|
|
|
builtin_type_m2_int =
|
1992-04-15 07:42:00 +02:00
|
|
|
|
init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
|
1992-04-18 04:30:28 +02:00
|
|
|
|
0,
|
1992-02-22 02:46:16 +01:00
|
|
|
|
"INTEGER", (struct objfile *) NULL);
|
|
|
|
|
builtin_type_m2_card =
|
1992-04-15 07:42:00 +02:00
|
|
|
|
init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
|
1992-04-18 04:30:28 +02:00
|
|
|
|
TYPE_FLAG_UNSIGNED,
|
1992-02-22 02:46:16 +01:00
|
|
|
|
"CARDINAL", (struct objfile *) NULL);
|
|
|
|
|
builtin_type_m2_real =
|
1992-04-15 07:42:00 +02:00
|
|
|
|
init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
|
1992-04-18 04:30:28 +02:00
|
|
|
|
0,
|
1992-02-22 02:46:16 +01:00
|
|
|
|
"REAL", (struct objfile *) NULL);
|
|
|
|
|
builtin_type_m2_char =
|
1992-04-15 07:42:00 +02:00
|
|
|
|
init_type (TYPE_CODE_CHAR, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
|
1992-04-18 04:30:28 +02:00
|
|
|
|
TYPE_FLAG_UNSIGNED,
|
1992-02-22 02:46:16 +01:00
|
|
|
|
"CHAR", (struct objfile *) NULL);
|
|
|
|
|
builtin_type_m2_bool =
|
1992-04-15 07:42:00 +02:00
|
|
|
|
init_type (TYPE_CODE_BOOL, TARGET_INT_BIT / TARGET_CHAR_BIT,
|
1992-04-18 04:30:28 +02:00
|
|
|
|
TYPE_FLAG_UNSIGNED,
|
1992-02-22 02:46:16 +01:00
|
|
|
|
"BOOLEAN", (struct objfile *) NULL);
|
1991-09-19 12:31:00 +02:00
|
|
|
|
|
|
|
|
|
TYPE_NFIELDS(builtin_type_m2_bool) = 2;
|
|
|
|
|
TYPE_FIELDS(builtin_type_m2_bool) =
|
|
|
|
|
(struct field *) malloc (sizeof (struct field) * 2);
|
|
|
|
|
TYPE_FIELD_BITPOS(builtin_type_m2_bool,0) = 0;
|
|
|
|
|
TYPE_FIELD_NAME(builtin_type_m2_bool,0) = (char *)malloc(6);
|
|
|
|
|
strcpy(TYPE_FIELD_NAME(builtin_type_m2_bool,0),"FALSE");
|
|
|
|
|
TYPE_FIELD_BITPOS(builtin_type_m2_bool,1) = 1;
|
|
|
|
|
TYPE_FIELD_NAME(builtin_type_m2_bool,1) = (char *)malloc(5);
|
|
|
|
|
strcpy(TYPE_FIELD_NAME(builtin_type_m2_bool,1),"TRUE");
|
|
|
|
|
|
|
|
|
|
add_language (&m2_language_defn);
|
|
|
|
|
}
|