5d074aa977
* defs.h (printchar): Replace with gdb_printchar. * language.h (language_defn): Add new function pointers la_printchar and la_printstr, to do language dependent printing of characters and strings. * language.h (local_printchar, local_printstr): New macros to call language dependent functions pointed to by la_printchar and la_printstr respectively. * c-exp.y (emit_char, c_printchar, c_printstr): New language dependent functions for printing characters and strings. * c-exp.y (c_language_defn, cplus_language_defn): Add c_printchar and c_printstr. * command.c (do_setshow_command): Rename printchar use to gdb_printchar. * expprint.c (print_subexp): Replace C style string output with call to local_printstr. * language.c (unk_lang_printchar, unk_lang_printstr): New stubs, currently errors. * language.c (unknown_language_defn, auto_language_defn, local_language_defn): Add unk_lang_printchar and unk_lang_printstr. * m2-exp.y (emit_char, m2_printchar, m2_printstr): New language dependent functions to print characters and strings. * m2-exp.y (m2_language_defn): Add m2_printchar and m2_printstr. * utils.c (printchar): Renamed to gdb_printchar. * valprint.c (print_string): Remove prototype, function moved to c-exp.y, where it becomes c_printstr. * valprint.c (print_max): Made global for reference from the language dependent printing routines in *-exp.y. * valprint.c (repeat_count_threshold): New variable with function of old REPEAT_COUNT_THREHOLD define, but now settable by user. Change all references to old macro to references to new variable. * valprint.c (value_print, val_print): Replace calls to print_string with calls to local_printstr. * valprint.c (val_print): Replace C style character printing with call to local_printchar. * valprint.c (val_print): Add case for TYPE_CODE_CHAR. * valprint.c (_initialize_valprint): Add add_show_from_set call for setting up repeat_count_threshold as print variable. **** start-sanitize-chill **** * ch-exp.y (decode_integer_value): New function. * ch-exp.y (decode_integer_literal): Use decode_integer_value. * ch-exp.y (chill_printchar, chill_printstr): New language dependent functions for printing characters and strings. * ch-exp.y (chill_language_defn): Add chill_printchar and chill_printstr. **** end-sanitize-chill ****
1829 lines
46 KiB
Text
1829 lines
46 KiB
Text
/* YACC parser for C expressions, for GDB.
|
||
Copyright (C) 1986, 1989, 1990, 1991 Free Software Foundation, Inc.
|
||
|
||
This file is part of GDB.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
||
/* Parse a C expression from text in a string,
|
||
and return the result as a struct expression pointer.
|
||
That structure contains arithmetic operations in reverse polish,
|
||
with constants represented by operations that are followed by special data.
|
||
See expression.h for the details of the format.
|
||
What is important here is that it can be built up sequentially
|
||
during the process of parsing; the lower levels of the tree always
|
||
come first in the result.
|
||
|
||
Note that malloc's and realloc's in this file are transformed to
|
||
xmalloc and xrealloc respectively by the same sed command in the
|
||
makefile that remaps any other malloc/realloc inserted by the parser
|
||
generator. Doing this with #defines and trying to control the interaction
|
||
with include files (<malloc.h> and <stdlib.h> for example) just became
|
||
too messy, particularly when such includes can be inserted at random
|
||
times by the parser generator. */
|
||
|
||
%{
|
||
|
||
#include <stdio.h>
|
||
#include <string.h>
|
||
#include "defs.h"
|
||
#include "symtab.h"
|
||
#include "gdbtypes.h"
|
||
#include "frame.h"
|
||
#include "expression.h"
|
||
#include "parser-defs.h"
|
||
#include "value.h"
|
||
#include "language.h"
|
||
#include "bfd.h"
|
||
#include "symfile.h"
|
||
#include "objfiles.h"
|
||
|
||
/* These MUST be included in any grammar file!!!! Please choose unique names!
|
||
Note that this are a combined list of variables that can be produced
|
||
by any one of bison, byacc, or yacc. */
|
||
#define yymaxdepth c_maxdepth
|
||
#define yyparse c_parse
|
||
#define yylex c_lex
|
||
#define yyerror c_error
|
||
#define yylval c_lval
|
||
#define yychar c_char
|
||
#define yydebug c_debug
|
||
#define yypact c_pact
|
||
#define yyr1 c_r1
|
||
#define yyr2 c_r2
|
||
#define yydef c_def
|
||
#define yychk c_chk
|
||
#define yypgo c_pgo
|
||
#define yyact c_act
|
||
#define yyexca c_exca
|
||
#define yyerrflag c_errflag
|
||
#define yynerrs c_nerrs
|
||
#define yyps c_ps
|
||
#define yypv c_pv
|
||
#define yys c_s
|
||
#define yy_yys c_yys
|
||
#define yystate c_state
|
||
#define yytmp c_tmp
|
||
#define yyv c_v
|
||
#define yy_yyv c_yyv
|
||
#define yyval c_val
|
||
#define yylloc c_lloc
|
||
#define yyss c_yyss /* byacc */
|
||
#define yyssp c_yysp /* byacc */
|
||
#define yyvs c_yyvs /* byacc */
|
||
#define yyvsp c_yyvsp /* byacc */
|
||
|
||
int
|
||
yyparse PARAMS ((void));
|
||
|
||
int
|
||
yylex PARAMS ((void));
|
||
|
||
void
|
||
yyerror PARAMS ((char *));
|
||
|
||
/* #define YYDEBUG 1 */
|
||
|
||
%}
|
||
|
||
/* Although the yacc "value" of an expression is not used,
|
||
since the result is stored in the structure being created,
|
||
other node types do have values. */
|
||
|
||
%union
|
||
{
|
||
LONGEST lval;
|
||
unsigned LONGEST ulval;
|
||
struct {
|
||
LONGEST val;
|
||
struct type *type;
|
||
} typed_val;
|
||
double dval;
|
||
struct symbol *sym;
|
||
struct type *tval;
|
||
struct stoken sval;
|
||
struct ttype tsym;
|
||
struct symtoken ssym;
|
||
int voidval;
|
||
struct block *bval;
|
||
enum exp_opcode opcode;
|
||
struct internalvar *ivar;
|
||
|
||
struct type **tvec;
|
||
int *ivec;
|
||
}
|
||
|
||
%{
|
||
/* YYSTYPE gets defined by %union */
|
||
static int
|
||
parse_number PARAMS ((char *, int, int, YYSTYPE *));
|
||
%}
|
||
|
||
%type <voidval> exp exp1 type_exp start variable qualified_name
|
||
%type <tval> type typebase
|
||
%type <tvec> nonempty_typelist
|
||
/* %type <bval> block */
|
||
|
||
/* Fancy type parsing. */
|
||
%type <voidval> func_mod direct_abs_decl abs_decl
|
||
%type <tval> ptype
|
||
%type <lval> array_mod
|
||
|
||
%token <typed_val> INT
|
||
%token <dval> FLOAT
|
||
|
||
/* Both NAME and TYPENAME tokens represent symbols in the input,
|
||
and both convey their data as strings.
|
||
But a TYPENAME is a string that happens to be defined as a typedef
|
||
or builtin type name (such as int or char)
|
||
and a NAME is any other symbol.
|
||
Contexts where this distinction is not important can use the
|
||
nonterminal "name", which matches either NAME or TYPENAME. */
|
||
|
||
%token <sval> STRING
|
||
%token <ssym> NAME /* BLOCKNAME defined below to give it higher precedence. */
|
||
%token <tsym> TYPENAME
|
||
%type <sval> name
|
||
%type <ssym> name_not_typename
|
||
%type <tsym> typename
|
||
|
||
/* A NAME_OR_INT is a symbol which is not known in the symbol table,
|
||
but which would parse as a valid number in the current input radix.
|
||
E.g. "c" when input_radix==16. Depending on the parse, it will be
|
||
turned into a name or into a number. */
|
||
|
||
%token <ssym> NAME_OR_INT
|
||
|
||
%token STRUCT CLASS UNION ENUM SIZEOF UNSIGNED COLONCOLON
|
||
%token TEMPLATE
|
||
%token ERROR
|
||
|
||
/* Special type cases, put in to allow the parser to distinguish different
|
||
legal basetypes. */
|
||
%token SIGNED_KEYWORD LONG SHORT INT_KEYWORD CONST_KEYWORD VOLATILE_KEYWORD
|
||
%token <lval> LAST REGNAME
|
||
|
||
%token <ivar> VARIABLE
|
||
|
||
%token <opcode> ASSIGN_MODIFY
|
||
|
||
/* C++ */
|
||
%token THIS
|
||
|
||
%left ','
|
||
%left ABOVE_COMMA
|
||
%right '=' ASSIGN_MODIFY
|
||
%right '?'
|
||
%left OROR
|
||
%left ANDAND
|
||
%left '|'
|
||
%left '^'
|
||
%left '&'
|
||
%left EQUAL NOTEQUAL
|
||
%left '<' '>' LEQ GEQ
|
||
%left LSH RSH
|
||
%left '@'
|
||
%left '+' '-'
|
||
%left '*' '/' '%'
|
||
%right UNARY INCREMENT DECREMENT
|
||
%right ARROW '.' '[' '('
|
||
%token <ssym> BLOCKNAME
|
||
%type <bval> block
|
||
%left COLONCOLON
|
||
|
||
|
||
%%
|
||
|
||
start : exp1
|
||
| type_exp
|
||
;
|
||
|
||
type_exp: type
|
||
{ write_exp_elt_opcode(OP_TYPE);
|
||
write_exp_elt_type($1);
|
||
write_exp_elt_opcode(OP_TYPE);}
|
||
;
|
||
|
||
/* Expressions, including the comma operator. */
|
||
exp1 : exp
|
||
| exp1 ',' exp
|
||
{ write_exp_elt_opcode (BINOP_COMMA); }
|
||
;
|
||
|
||
/* Expressions, not including the comma operator. */
|
||
exp : '*' exp %prec UNARY
|
||
{ write_exp_elt_opcode (UNOP_IND); }
|
||
|
||
exp : '&' exp %prec UNARY
|
||
{ write_exp_elt_opcode (UNOP_ADDR); }
|
||
|
||
exp : '-' exp %prec UNARY
|
||
{ write_exp_elt_opcode (UNOP_NEG); }
|
||
;
|
||
|
||
exp : '!' exp %prec UNARY
|
||
{ write_exp_elt_opcode (UNOP_LOGICAL_NOT); }
|
||
;
|
||
|
||
exp : '~' exp %prec UNARY
|
||
{ write_exp_elt_opcode (UNOP_COMPLEMENT); }
|
||
;
|
||
|
||
exp : INCREMENT exp %prec UNARY
|
||
{ write_exp_elt_opcode (UNOP_PREINCREMENT); }
|
||
;
|
||
|
||
exp : DECREMENT exp %prec UNARY
|
||
{ write_exp_elt_opcode (UNOP_PREDECREMENT); }
|
||
;
|
||
|
||
exp : exp INCREMENT %prec UNARY
|
||
{ write_exp_elt_opcode (UNOP_POSTINCREMENT); }
|
||
;
|
||
|
||
exp : exp DECREMENT %prec UNARY
|
||
{ write_exp_elt_opcode (UNOP_POSTDECREMENT); }
|
||
;
|
||
|
||
exp : SIZEOF exp %prec UNARY
|
||
{ write_exp_elt_opcode (UNOP_SIZEOF); }
|
||
;
|
||
|
||
exp : exp ARROW name
|
||
{ write_exp_elt_opcode (STRUCTOP_PTR);
|
||
write_exp_string ($3);
|
||
write_exp_elt_opcode (STRUCTOP_PTR); }
|
||
;
|
||
|
||
exp : exp ARROW qualified_name
|
||
{ /* exp->type::name becomes exp->*(&type::name) */
|
||
/* Note: this doesn't work if name is a
|
||
static member! FIXME */
|
||
write_exp_elt_opcode (UNOP_ADDR);
|
||
write_exp_elt_opcode (STRUCTOP_MPTR); }
|
||
;
|
||
exp : exp ARROW '*' exp
|
||
{ write_exp_elt_opcode (STRUCTOP_MPTR); }
|
||
;
|
||
|
||
exp : exp '.' name
|
||
{ write_exp_elt_opcode (STRUCTOP_STRUCT);
|
||
write_exp_string ($3);
|
||
write_exp_elt_opcode (STRUCTOP_STRUCT); }
|
||
;
|
||
|
||
exp : exp '.' qualified_name
|
||
{ /* exp.type::name becomes exp.*(&type::name) */
|
||
/* Note: this doesn't work if name is a
|
||
static member! FIXME */
|
||
write_exp_elt_opcode (UNOP_ADDR);
|
||
write_exp_elt_opcode (STRUCTOP_MEMBER); }
|
||
;
|
||
|
||
exp : exp '.' '*' exp
|
||
{ write_exp_elt_opcode (STRUCTOP_MEMBER); }
|
||
;
|
||
|
||
exp : exp '[' exp1 ']'
|
||
{ write_exp_elt_opcode (BINOP_SUBSCRIPT); }
|
||
;
|
||
|
||
exp : exp '('
|
||
/* This is to save the value of arglist_len
|
||
being accumulated by an outer function call. */
|
||
{ start_arglist (); }
|
||
arglist ')' %prec ARROW
|
||
{ 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++; }
|
||
;
|
||
|
||
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 ($2);
|
||
write_exp_elt_opcode (UNOP_CAST); }
|
||
;
|
||
|
||
exp : '(' exp1 ')'
|
||
{ }
|
||
;
|
||
|
||
/* Binary operators in order of decreasing precedence. */
|
||
|
||
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 '%' 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 LSH exp
|
||
{ write_exp_elt_opcode (BINOP_LSH); }
|
||
;
|
||
|
||
exp : exp RSH exp
|
||
{ write_exp_elt_opcode (BINOP_RSH); }
|
||
;
|
||
|
||
exp : exp EQUAL exp
|
||
{ write_exp_elt_opcode (BINOP_EQUAL); }
|
||
;
|
||
|
||
exp : exp NOTEQUAL 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); }
|
||
;
|
||
|
||
exp : exp '&' exp
|
||
{ write_exp_elt_opcode (BINOP_BITWISE_AND); }
|
||
;
|
||
|
||
exp : exp '^' exp
|
||
{ write_exp_elt_opcode (BINOP_BITWISE_XOR); }
|
||
;
|
||
|
||
exp : exp '|' exp
|
||
{ write_exp_elt_opcode (BINOP_BITWISE_IOR); }
|
||
;
|
||
|
||
exp : exp ANDAND exp
|
||
{ write_exp_elt_opcode (BINOP_LOGICAL_AND); }
|
||
;
|
||
|
||
exp : exp OROR exp
|
||
{ write_exp_elt_opcode (BINOP_LOGICAL_OR); }
|
||
;
|
||
|
||
exp : exp '?' exp ':' exp %prec '?'
|
||
{ write_exp_elt_opcode (TERNOP_COND); }
|
||
;
|
||
|
||
exp : exp '=' exp
|
||
{ write_exp_elt_opcode (BINOP_ASSIGN); }
|
||
;
|
||
|
||
exp : exp ASSIGN_MODIFY exp
|
||
{ write_exp_elt_opcode (BINOP_ASSIGN_MODIFY);
|
||
write_exp_elt_opcode ($2);
|
||
write_exp_elt_opcode (BINOP_ASSIGN_MODIFY); }
|
||
;
|
||
|
||
exp : INT
|
||
{ write_exp_elt_opcode (OP_LONG);
|
||
write_exp_elt_type ($1.type);
|
||
write_exp_elt_longcst ((LONGEST)($1.val));
|
||
write_exp_elt_opcode (OP_LONG); }
|
||
;
|
||
|
||
exp : NAME_OR_INT
|
||
{ YYSTYPE val;
|
||
parse_number ($1.stoken.ptr, $1.stoken.length, 0, &val);
|
||
write_exp_elt_opcode (OP_LONG);
|
||
write_exp_elt_type (val.typed_val.type);
|
||
write_exp_elt_longcst ((LONGEST)val.typed_val.val);
|
||
write_exp_elt_opcode (OP_LONG);
|
||
}
|
||
;
|
||
|
||
|
||
exp : FLOAT
|
||
{ write_exp_elt_opcode (OP_DOUBLE);
|
||
write_exp_elt_type (builtin_type_double);
|
||
write_exp_elt_dblcst ($1);
|
||
write_exp_elt_opcode (OP_DOUBLE); }
|
||
;
|
||
|
||
exp : variable
|
||
;
|
||
|
||
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 : VARIABLE
|
||
{ write_exp_elt_opcode (OP_INTERNALVAR);
|
||
write_exp_elt_intern ($1);
|
||
write_exp_elt_opcode (OP_INTERNALVAR); }
|
||
;
|
||
|
||
exp : SIZEOF '(' 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_STRING);
|
||
write_exp_string ($1);
|
||
write_exp_elt_opcode (OP_STRING); }
|
||
;
|
||
|
||
/* C++. */
|
||
exp : THIS
|
||
{ write_exp_elt_opcode (OP_THIS);
|
||
write_exp_elt_opcode (OP_THIS); }
|
||
;
|
||
|
||
/* end of C++. */
|
||
|
||
block : BLOCKNAME
|
||
{
|
||
if ($1.sym != 0)
|
||
$$ = SYMBOL_BLOCK_VALUE ($1.sym);
|
||
else
|
||
{
|
||
struct symtab *tem =
|
||
lookup_symtab (copy_name ($1.stoken));
|
||
if (tem)
|
||
$$ = BLOCKVECTOR_BLOCK
|
||
(BLOCKVECTOR (tem), STATIC_BLOCK);
|
||
else
|
||
error ("No file or function \"%s\".",
|
||
copy_name ($1.stoken));
|
||
}
|
||
}
|
||
;
|
||
|
||
block : block COLONCOLON name
|
||
{ 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));
|
||
$$ = SYMBOL_BLOCK_VALUE (tem); }
|
||
;
|
||
|
||
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); }
|
||
;
|
||
|
||
qualified_name: typebase COLONCOLON name
|
||
{
|
||
struct type *type = $1;
|
||
if (TYPE_CODE (type) != TYPE_CODE_STRUCT
|
||
&& TYPE_CODE (type) != TYPE_CODE_UNION)
|
||
error ("`%s' is not defined as an aggregate type.",
|
||
TYPE_NAME (type));
|
||
|
||
write_exp_elt_opcode (OP_SCOPE);
|
||
write_exp_elt_type (type);
|
||
write_exp_string ($3);
|
||
write_exp_elt_opcode (OP_SCOPE);
|
||
}
|
||
| typebase COLONCOLON '~' name
|
||
{
|
||
struct type *type = $1;
|
||
struct stoken tmp_token;
|
||
if (TYPE_CODE (type) != TYPE_CODE_STRUCT
|
||
&& TYPE_CODE (type) != TYPE_CODE_UNION)
|
||
error ("`%s' is not defined as an aggregate type.",
|
||
TYPE_NAME (type));
|
||
|
||
if (strcmp (type_name_no_tag (type), $4.ptr))
|
||
error ("invalid destructor `%s::~%s'",
|
||
type_name_no_tag (type), $4.ptr);
|
||
|
||
tmp_token.ptr = (char*) alloca ($4.length + 2);
|
||
tmp_token.length = $4.length + 1;
|
||
tmp_token.ptr[0] = '~';
|
||
memcpy (tmp_token.ptr+1, $4.ptr, $4.length);
|
||
tmp_token.ptr[tmp_token.length] = 0;
|
||
write_exp_elt_opcode (OP_SCOPE);
|
||
write_exp_elt_type (type);
|
||
write_exp_string (tmp_token);
|
||
write_exp_elt_opcode (OP_SCOPE);
|
||
}
|
||
;
|
||
|
||
variable: qualified_name
|
||
| COLONCOLON name
|
||
{
|
||
char *name = copy_name ($2);
|
||
struct symbol *sym;
|
||
struct minimal_symbol *msymbol;
|
||
|
||
sym =
|
||
lookup_symbol (name, 0, VAR_NAMESPACE, 0, NULL);
|
||
if (sym)
|
||
{
|
||
write_exp_elt_opcode (OP_VAR_VALUE);
|
||
write_exp_elt_sym (sym);
|
||
write_exp_elt_opcode (OP_VAR_VALUE);
|
||
break;
|
||
}
|
||
|
||
msymbol = lookup_minimal_symbol (name,
|
||
(struct objfile *) NULL);
|
||
if (msymbol != NULL)
|
||
{
|
||
write_exp_elt_opcode (OP_LONG);
|
||
write_exp_elt_type (builtin_type_int);
|
||
write_exp_elt_longcst ((LONGEST) msymbol -> address);
|
||
write_exp_elt_opcode (OP_LONG);
|
||
write_exp_elt_opcode (UNOP_MEMVAL);
|
||
if (msymbol -> type == mst_data ||
|
||
msymbol -> type == mst_bss)
|
||
write_exp_elt_type (builtin_type_int);
|
||
else if (msymbol -> type == mst_text)
|
||
write_exp_elt_type (lookup_function_type (builtin_type_int));
|
||
else
|
||
write_exp_elt_type (builtin_type_char);
|
||
write_exp_elt_opcode (UNOP_MEMVAL);
|
||
}
|
||
else
|
||
if (!have_full_symbols () && !have_partial_symbols ())
|
||
error ("No symbol table is loaded. Use the \"file\" command.");
|
||
else
|
||
error ("No symbol \"%s\" in current context.", name);
|
||
}
|
||
;
|
||
|
||
variable: name_not_typename
|
||
{ struct symbol *sym = $1.sym;
|
||
|
||
if (sym)
|
||
{
|
||
switch (SYMBOL_CLASS (sym))
|
||
{
|
||
case LOC_REGISTER:
|
||
case LOC_ARG:
|
||
case LOC_REF_ARG:
|
||
case LOC_REGPARM:
|
||
case LOC_LOCAL:
|
||
case LOC_LOCAL_ARG:
|
||
if (innermost_block == 0 ||
|
||
contained_in (block_found,
|
||
innermost_block))
|
||
innermost_block = block_found;
|
||
case LOC_UNDEF:
|
||
case LOC_CONST:
|
||
case LOC_STATIC:
|
||
case LOC_TYPEDEF:
|
||
case LOC_LABEL:
|
||
case LOC_BLOCK:
|
||
case LOC_CONST_BYTES:
|
||
|
||
/* In this case the expression can
|
||
be evaluated regardless of what
|
||
frame we are in, so there is no
|
||
need to check for the
|
||
innermost_block. These cases are
|
||
listed so that gcc -Wall will
|
||
report types that may not have
|
||
been considered. */
|
||
|
||
break;
|
||
}
|
||
write_exp_elt_opcode (OP_VAR_VALUE);
|
||
write_exp_elt_sym (sym);
|
||
write_exp_elt_opcode (OP_VAR_VALUE);
|
||
}
|
||
else if ($1.is_a_field_of_this)
|
||
{
|
||
/* C++: it hangs off of `this'. Must
|
||
not inadvertently convert from a method call
|
||
to data ref. */
|
||
if (innermost_block == 0 ||
|
||
contained_in (block_found, innermost_block))
|
||
innermost_block = block_found;
|
||
write_exp_elt_opcode (OP_THIS);
|
||
write_exp_elt_opcode (OP_THIS);
|
||
write_exp_elt_opcode (STRUCTOP_PTR);
|
||
write_exp_string ($1.stoken);
|
||
write_exp_elt_opcode (STRUCTOP_PTR);
|
||
}
|
||
else
|
||
{
|
||
struct minimal_symbol *msymbol;
|
||
register char *arg = copy_name ($1.stoken);
|
||
|
||
msymbol = lookup_minimal_symbol (arg,
|
||
(struct objfile *) NULL);
|
||
if (msymbol != NULL)
|
||
{
|
||
write_exp_elt_opcode (OP_LONG);
|
||
write_exp_elt_type (builtin_type_int);
|
||
write_exp_elt_longcst ((LONGEST) msymbol -> address);
|
||
write_exp_elt_opcode (OP_LONG);
|
||
write_exp_elt_opcode (UNOP_MEMVAL);
|
||
if (msymbol -> type == mst_data ||
|
||
msymbol -> type == mst_bss)
|
||
write_exp_elt_type (builtin_type_int);
|
||
else if (msymbol -> type == mst_text)
|
||
write_exp_elt_type (lookup_function_type (builtin_type_int));
|
||
else
|
||
write_exp_elt_type (builtin_type_char);
|
||
write_exp_elt_opcode (UNOP_MEMVAL);
|
||
}
|
||
else if (!have_full_symbols () && !have_partial_symbols ())
|
||
error ("No symbol table is loaded. Use the \"file\" command.");
|
||
else
|
||
error ("No symbol \"%s\" in current context.",
|
||
copy_name ($1.stoken));
|
||
}
|
||
}
|
||
;
|
||
|
||
|
||
ptype : typebase
|
||
| typebase abs_decl
|
||
{
|
||
/* This is where the interesting stuff happens. */
|
||
int done = 0;
|
||
int array_size;
|
||
struct type *follow_type = $1;
|
||
|
||
while (!done)
|
||
switch (pop_type ())
|
||
{
|
||
case tp_end:
|
||
done = 1;
|
||
break;
|
||
case tp_pointer:
|
||
follow_type = lookup_pointer_type (follow_type);
|
||
break;
|
||
case tp_reference:
|
||
follow_type = lookup_reference_type (follow_type);
|
||
break;
|
||
case tp_array:
|
||
array_size = pop_type_int ();
|
||
if (array_size != -1)
|
||
follow_type = create_array_type (follow_type,
|
||
array_size);
|
||
else
|
||
follow_type = lookup_pointer_type (follow_type);
|
||
break;
|
||
case tp_function:
|
||
follow_type = lookup_function_type (follow_type);
|
||
break;
|
||
}
|
||
$$ = follow_type;
|
||
}
|
||
;
|
||
|
||
abs_decl: '*'
|
||
{ push_type (tp_pointer); $$ = 0; }
|
||
| '*' abs_decl
|
||
{ push_type (tp_pointer); $$ = $2; }
|
||
| '&'
|
||
{ push_type (tp_reference); $$ = 0; }
|
||
| '&' abs_decl
|
||
{ push_type (tp_reference); $$ = $2; }
|
||
| direct_abs_decl
|
||
;
|
||
|
||
direct_abs_decl: '(' abs_decl ')'
|
||
{ $$ = $2; }
|
||
| direct_abs_decl array_mod
|
||
{
|
||
push_type_int ($2);
|
||
push_type (tp_array);
|
||
}
|
||
| array_mod
|
||
{
|
||
push_type_int ($1);
|
||
push_type (tp_array);
|
||
$$ = 0;
|
||
}
|
||
| direct_abs_decl func_mod
|
||
{ push_type (tp_function); }
|
||
| func_mod
|
||
{ push_type (tp_function); }
|
||
;
|
||
|
||
array_mod: '[' ']'
|
||
{ $$ = -1; }
|
||
| '[' INT ']'
|
||
{ $$ = $2.val; }
|
||
;
|
||
|
||
func_mod: '(' ')'
|
||
{ $$ = 0; }
|
||
| '(' nonempty_typelist ')'
|
||
{ free ((PTR)$2); $$ = 0; }
|
||
;
|
||
|
||
type : ptype
|
||
| typebase COLONCOLON '*'
|
||
{ $$ = lookup_member_type (builtin_type_int, $1); }
|
||
| type '(' typebase COLONCOLON '*' ')'
|
||
{ $$ = lookup_member_type ($1, $3); }
|
||
| type '(' typebase COLONCOLON '*' ')' '(' ')'
|
||
{ $$ = lookup_member_type
|
||
(lookup_function_type ($1), $3); }
|
||
| type '(' typebase COLONCOLON '*' ')' '(' nonempty_typelist ')'
|
||
{ $$ = lookup_member_type
|
||
(lookup_function_type ($1), $3);
|
||
free ((PTR)$8); }
|
||
;
|
||
|
||
typebase /* Implements (approximately): (type-qualifier)* type-specifier */
|
||
: TYPENAME
|
||
{ $$ = $1.type; }
|
||
| INT_KEYWORD
|
||
{ $$ = builtin_type_int; }
|
||
| LONG
|
||
{ $$ = builtin_type_long; }
|
||
| SHORT
|
||
{ $$ = builtin_type_short; }
|
||
| LONG INT_KEYWORD
|
||
{ $$ = builtin_type_long; }
|
||
| UNSIGNED LONG INT_KEYWORD
|
||
{ $$ = builtin_type_unsigned_long; }
|
||
| LONG LONG
|
||
{ $$ = builtin_type_long_long; }
|
||
| LONG LONG INT_KEYWORD
|
||
{ $$ = builtin_type_long_long; }
|
||
| UNSIGNED LONG LONG
|
||
{ $$ = builtin_type_unsigned_long_long; }
|
||
| UNSIGNED LONG LONG INT_KEYWORD
|
||
{ $$ = builtin_type_unsigned_long_long; }
|
||
| SHORT INT_KEYWORD
|
||
{ $$ = builtin_type_short; }
|
||
| UNSIGNED SHORT INT_KEYWORD
|
||
{ $$ = builtin_type_unsigned_short; }
|
||
| STRUCT name
|
||
{ $$ = lookup_struct (copy_name ($2),
|
||
expression_context_block); }
|
||
| CLASS name
|
||
{ $$ = lookup_struct (copy_name ($2),
|
||
expression_context_block); }
|
||
| UNION name
|
||
{ $$ = lookup_union (copy_name ($2),
|
||
expression_context_block); }
|
||
| ENUM name
|
||
{ $$ = lookup_enum (copy_name ($2),
|
||
expression_context_block); }
|
||
| UNSIGNED typename
|
||
{ $$ = lookup_unsigned_typename (TYPE_NAME($2.type)); }
|
||
| UNSIGNED
|
||
{ $$ = builtin_type_unsigned_int; }
|
||
| SIGNED_KEYWORD typename
|
||
{ $$ = lookup_signed_typename (TYPE_NAME($2.type)); }
|
||
| SIGNED_KEYWORD
|
||
{ $$ = builtin_type_int; }
|
||
| TEMPLATE name '<' type '>'
|
||
{ $$ = lookup_template_type(copy_name($2), $4,
|
||
expression_context_block);
|
||
}
|
||
/* "const" and "volatile" are curently ignored. */
|
||
| CONST_KEYWORD typebase { $$ = $2; }
|
||
| VOLATILE_KEYWORD typebase { $$ = $2; }
|
||
;
|
||
|
||
typename: TYPENAME
|
||
| INT_KEYWORD
|
||
{
|
||
$$.stoken.ptr = "int";
|
||
$$.stoken.length = 3;
|
||
$$.type = builtin_type_int;
|
||
}
|
||
| LONG
|
||
{
|
||
$$.stoken.ptr = "long";
|
||
$$.stoken.length = 4;
|
||
$$.type = builtin_type_long;
|
||
}
|
||
| SHORT
|
||
{
|
||
$$.stoken.ptr = "short";
|
||
$$.stoken.length = 5;
|
||
$$.type = builtin_type_short;
|
||
}
|
||
;
|
||
|
||
nonempty_typelist
|
||
: type
|
||
{ $$ = (struct type **) malloc (sizeof (struct type *) * 2);
|
||
$<ivec>$[0] = 1; /* Number of types in vector */
|
||
$$[1] = $1;
|
||
}
|
||
| nonempty_typelist ',' type
|
||
{ int len = sizeof (struct type *) * (++($<ivec>1[0]) + 1);
|
||
$$ = (struct type **) realloc ((char *) $1, len);
|
||
$$[$<ivec>$[0]] = $3;
|
||
}
|
||
;
|
||
|
||
name : NAME { $$ = $1.stoken; }
|
||
| BLOCKNAME { $$ = $1.stoken; }
|
||
| TYPENAME { $$ = $1.stoken; }
|
||
| NAME_OR_INT { $$ = $1.stoken; }
|
||
;
|
||
|
||
name_not_typename : NAME
|
||
| BLOCKNAME
|
||
/* These would be useful if name_not_typename was useful, but it is just
|
||
a fake for "variable", so these cause reduce/reduce conflicts because
|
||
the parser can't tell whether NAME_OR_INT is a name_not_typename (=variable,
|
||
=exp) or just an exp. If name_not_typename was ever used in an lvalue
|
||
context where only a name could occur, this might be useful.
|
||
| NAME_OR_INT
|
||
*/
|
||
;
|
||
|
||
%%
|
||
|
||
/* 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 (p, len, parsed_float, putithere)
|
||
register char *p;
|
||
register int len;
|
||
int parsed_float;
|
||
YYSTYPE *putithere;
|
||
{
|
||
register LONGEST n = 0;
|
||
register LONGEST prevn = 0;
|
||
register int i;
|
||
register int c;
|
||
register int base = input_radix;
|
||
int unsigned_p = 0;
|
||
int long_p = 0;
|
||
LONGEST high_bit;
|
||
struct type *signed_type;
|
||
struct type *unsigned_type;
|
||
|
||
if (parsed_float)
|
||
{
|
||
/* It's a float since it contains a point or an exponent. */
|
||
putithere->dval = atof (p);
|
||
return FLOAT;
|
||
}
|
||
|
||
/* Handle base-switching prefixes 0x, 0t, 0d, 0 */
|
||
if (p[0] == '0')
|
||
switch (p[1])
|
||
{
|
||
case 'x':
|
||
case 'X':
|
||
if (len >= 3)
|
||
{
|
||
p += 2;
|
||
base = 16;
|
||
len -= 2;
|
||
}
|
||
break;
|
||
|
||
case 't':
|
||
case 'T':
|
||
case 'd':
|
||
case 'D':
|
||
if (len >= 3)
|
||
{
|
||
p += 2;
|
||
base = 10;
|
||
len -= 2;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
base = 8;
|
||
break;
|
||
}
|
||
|
||
while (len-- > 0)
|
||
{
|
||
c = *p++;
|
||
if (c >= 'A' && c <= 'Z')
|
||
c += 'a' - 'A';
|
||
if (c != 'l' && c != 'u')
|
||
n *= base;
|
||
if (c >= '0' && c <= '9')
|
||
n += i = c - '0';
|
||
else
|
||
{
|
||
if (base > 10 && c >= 'a' && c <= 'f')
|
||
n += i = c - 'a' + 10;
|
||
else if (len == 0 && c == 'l')
|
||
long_p = 1;
|
||
else if (len == 0 && c == 'u')
|
||
unsigned_p = 1;
|
||
else
|
||
return ERROR; /* Char not a digit */
|
||
}
|
||
if (i >= base)
|
||
return ERROR; /* Invalid digit in this base */
|
||
|
||
/* Portably test for overflow (only works for nonzero values, so make
|
||
a second check for zero). */
|
||
if((prevn >= n) && n != 0)
|
||
unsigned_p=1; /* Try something unsigned */
|
||
/* If range checking enabled, portably test for unsigned overflow. */
|
||
if(RANGE_CHECK && n!=0)
|
||
{
|
||
if((unsigned_p && (unsigned)prevn >= (unsigned)n))
|
||
range_error("Overflow on numeric constant.");
|
||
}
|
||
prevn=n;
|
||
}
|
||
|
||
/* If the number is too big to be an int, or it's got an l suffix
|
||
then it's a long. Work out if this has to be a long by
|
||
shifting right and and seeing if anything remains, and the
|
||
target int size is different to the target long size. */
|
||
|
||
if ((TARGET_INT_BIT != TARGET_LONG_BIT && (n >> TARGET_INT_BIT)) || long_p)
|
||
{
|
||
high_bit = ((LONGEST)1) << (TARGET_LONG_BIT-1);
|
||
unsigned_type = builtin_type_unsigned_long;
|
||
signed_type = builtin_type_long;
|
||
}
|
||
else
|
||
{
|
||
high_bit = ((LONGEST)1) << (TARGET_INT_BIT-1);
|
||
unsigned_type = builtin_type_unsigned_int;
|
||
signed_type = builtin_type_int;
|
||
}
|
||
|
||
putithere->typed_val.val = n;
|
||
|
||
/* If the high bit of the worked out type is set then this number
|
||
has to be unsigned. */
|
||
|
||
if (unsigned_p || (n & high_bit))
|
||
{
|
||
putithere->typed_val.type = unsigned_type;
|
||
}
|
||
else
|
||
{
|
||
putithere->typed_val.type = signed_type;
|
||
}
|
||
|
||
return INT;
|
||
}
|
||
|
||
struct token
|
||
{
|
||
char *operator;
|
||
int token;
|
||
enum exp_opcode opcode;
|
||
};
|
||
|
||
const static struct token tokentab3[] =
|
||
{
|
||
{">>=", ASSIGN_MODIFY, BINOP_RSH},
|
||
{"<<=", ASSIGN_MODIFY, BINOP_LSH}
|
||
};
|
||
|
||
const static struct token tokentab2[] =
|
||
{
|
||
{"+=", ASSIGN_MODIFY, BINOP_ADD},
|
||
{"-=", ASSIGN_MODIFY, BINOP_SUB},
|
||
{"*=", ASSIGN_MODIFY, BINOP_MUL},
|
||
{"/=", ASSIGN_MODIFY, BINOP_DIV},
|
||
{"%=", ASSIGN_MODIFY, BINOP_REM},
|
||
{"|=", ASSIGN_MODIFY, BINOP_BITWISE_IOR},
|
||
{"&=", ASSIGN_MODIFY, BINOP_BITWISE_AND},
|
||
{"^=", ASSIGN_MODIFY, BINOP_BITWISE_XOR},
|
||
{"++", INCREMENT, BINOP_END},
|
||
{"--", DECREMENT, BINOP_END},
|
||
{"->", ARROW, BINOP_END},
|
||
{"&&", ANDAND, BINOP_END},
|
||
{"||", OROR, BINOP_END},
|
||
{"::", COLONCOLON, BINOP_END},
|
||
{"<<", LSH, BINOP_END},
|
||
{">>", RSH, BINOP_END},
|
||
{"==", EQUAL, BINOP_END},
|
||
{"!=", NOTEQUAL, BINOP_END},
|
||
{"<=", LEQ, BINOP_END},
|
||
{">=", GEQ, BINOP_END}
|
||
};
|
||
|
||
/* Read one token, getting characters through lexptr. */
|
||
|
||
int
|
||
yylex ()
|
||
{
|
||
register int c;
|
||
register int namelen;
|
||
register unsigned i;
|
||
register char *tokstart;
|
||
|
||
retry:
|
||
|
||
tokstart = lexptr;
|
||
/* See if it is a special token of length 3. */
|
||
for (i = 0; i < sizeof tokentab3 / sizeof tokentab3[0]; i++)
|
||
if (!strncmp (tokstart, tokentab3[i].operator, 3))
|
||
{
|
||
lexptr += 3;
|
||
yylval.opcode = tokentab3[i].opcode;
|
||
return tokentab3[i].token;
|
||
}
|
||
|
||
/* See if it is a special token of length 2. */
|
||
for (i = 0; i < sizeof tokentab2 / sizeof tokentab2[0]; i++)
|
||
if (!strncmp (tokstart, tokentab2[i].operator, 2))
|
||
{
|
||
lexptr += 2;
|
||
yylval.opcode = tokentab2[i].opcode;
|
||
return tokentab2[i].token;
|
||
}
|
||
|
||
switch (c = *tokstart)
|
||
{
|
||
case 0:
|
||
return 0;
|
||
|
||
case ' ':
|
||
case '\t':
|
||
case '\n':
|
||
lexptr++;
|
||
goto retry;
|
||
|
||
case '\'':
|
||
/* We either have a character constant ('0' or '\177' for example)
|
||
or we have a quoted symbol reference ('foo(int,int)' in C++
|
||
for example). */
|
||
lexptr++;
|
||
c = *lexptr++;
|
||
if (c == '\\')
|
||
c = parse_escape (&lexptr);
|
||
|
||
yylval.typed_val.val = c;
|
||
yylval.typed_val.type = builtin_type_char;
|
||
|
||
c = *lexptr++;
|
||
if (c != '\'')
|
||
{
|
||
namelen = skip_quoted (tokstart) - tokstart;
|
||
if (namelen > 2)
|
||
{
|
||
lexptr = tokstart + namelen;
|
||
namelen -= 2;
|
||
tokstart++;
|
||
goto tryname;
|
||
}
|
||
error ("Invalid character constant.");
|
||
}
|
||
return INT;
|
||
|
||
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')
|
||
goto symbol; /* Nope, must be a symbol. */
|
||
/* FALL THRU into number case. */
|
||
|
||
case '0':
|
||
case '1':
|
||
case '2':
|
||
case '3':
|
||
case '4':
|
||
case '5':
|
||
case '6':
|
||
case '7':
|
||
case '8':
|
||
case '9':
|
||
{
|
||
/* It's a number. */
|
||
int got_dot = 0, got_e = 0, toktype;
|
||
register char *p = tokstart;
|
||
int hex = input_radix > 10;
|
||
|
||
if (c == '0' && (p[1] == 'x' || p[1] == 'X'))
|
||
{
|
||
p += 2;
|
||
hex = 1;
|
||
}
|
||
else if (c == '0' && (p[1]=='t' || p[1]=='T' || p[1]=='d' || p[1]=='D'))
|
||
{
|
||
p += 2;
|
||
hex = 0;
|
||
}
|
||
|
||
for (;; ++p)
|
||
{
|
||
if (!hex && !got_e && (*p == 'e' || *p == 'E'))
|
||
got_dot = got_e = 1;
|
||
else if (!hex && !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;
|
||
/* We will take any letters or digits. parse_number will
|
||
complain if past the radix, or if L or U are not final. */
|
||
else if ((*p < '0' || *p > '9')
|
||
&& ((*p < 'a' || *p > 'z')
|
||
&& (*p < 'A' || *p > 'Z')))
|
||
break;
|
||
}
|
||
toktype = parse_number (tokstart, p - tokstart, got_dot|got_e, &yylval);
|
||
if (toktype == ERROR)
|
||
{
|
||
char *err_copy = (char *) alloca (p - tokstart + 1);
|
||
|
||
memcpy (err_copy, tokstart, p - tokstart);
|
||
err_copy[p - tokstart] = 0;
|
||
error ("Invalid number \"%s\".", err_copy);
|
||
}
|
||
lexptr = p;
|
||
return toktype;
|
||
}
|
||
|
||
case '+':
|
||
case '-':
|
||
case '*':
|
||
case '/':
|
||
case '%':
|
||
case '|':
|
||
case '&':
|
||
case '^':
|
||
case '~':
|
||
case '!':
|
||
case '@':
|
||
case '<':
|
||
case '>':
|
||
case '[':
|
||
case ']':
|
||
case '?':
|
||
case ':':
|
||
case '=':
|
||
case '{':
|
||
case '}':
|
||
symbol:
|
||
lexptr++;
|
||
return c;
|
||
|
||
case '"':
|
||
for (namelen = 1; (c = tokstart[namelen]) != '"'; namelen++)
|
||
if (c == '\\')
|
||
{
|
||
c = tokstart[++namelen];
|
||
if (c >= '0' && c <= '9')
|
||
{
|
||
c = tokstart[++namelen];
|
||
if (c >= '0' && c <= '9')
|
||
c = tokstart[++namelen];
|
||
}
|
||
}
|
||
yylval.sval.ptr = tokstart + 1;
|
||
yylval.sval.length = namelen - 1;
|
||
lexptr += namelen + 1;
|
||
return STRING;
|
||
}
|
||
|
||
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 $$digits (equivalent to $<-digits> if you could type that).
|
||
Make token type LAST, and put the number (the digits) in yylval. */
|
||
|
||
tryname:
|
||
if (*tokstart == '$')
|
||
{
|
||
register int negate = 0;
|
||
c = 1;
|
||
/* Double dollar means negate the number and add -1 as well.
|
||
Thus $$ 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;
|
||
}
|
||
}
|
||
/* Catch specific keywords. Should be done with a data structure. */
|
||
switch (namelen)
|
||
{
|
||
case 8:
|
||
if (!strncmp (tokstart, "unsigned", 8))
|
||
return UNSIGNED;
|
||
if (current_language->la_language == language_cplus
|
||
&& !strncmp (tokstart, "template", 8))
|
||
return TEMPLATE;
|
||
if (!strncmp (tokstart, "volatile", 8))
|
||
return VOLATILE_KEYWORD;
|
||
break;
|
||
case 6:
|
||
if (!strncmp (tokstart, "struct", 6))
|
||
return STRUCT;
|
||
if (!strncmp (tokstart, "signed", 6))
|
||
return SIGNED_KEYWORD;
|
||
if (!strncmp (tokstart, "sizeof", 6))
|
||
return SIZEOF;
|
||
break;
|
||
case 5:
|
||
if (current_language->la_language == language_cplus
|
||
&& !strncmp (tokstart, "class", 5))
|
||
return CLASS;
|
||
if (!strncmp (tokstart, "union", 5))
|
||
return UNION;
|
||
if (!strncmp (tokstart, "short", 5))
|
||
return SHORT;
|
||
if (!strncmp (tokstart, "const", 5))
|
||
return CONST_KEYWORD;
|
||
break;
|
||
case 4:
|
||
if (!strncmp (tokstart, "enum", 4))
|
||
return ENUM;
|
||
if (!strncmp (tokstart, "long", 4))
|
||
return LONG;
|
||
if (current_language->la_language == language_cplus
|
||
&& !strncmp (tokstart, "this", 4))
|
||
{
|
||
static const char this_name[] =
|
||
{ CPLUS_MARKER, 't', 'h', 'i', 's', '\0' };
|
||
|
||
if (lookup_symbol (this_name, expression_context_block,
|
||
VAR_NAMESPACE, 0, NULL))
|
||
return THIS;
|
||
}
|
||
break;
|
||
case 3:
|
||
if (!strncmp (tokstart, "int", 3))
|
||
return INT_KEYWORD;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
|
||
yylval.sval.ptr = tokstart;
|
||
yylval.sval.length = namelen;
|
||
|
||
/* Any other names starting in $ are debugger internal variables. */
|
||
|
||
if (*tokstart == '$')
|
||
{
|
||
yylval.ivar = lookup_internalvar (copy_name (yylval.sval) + 1);
|
||
return VARIABLE;
|
||
}
|
||
|
||
/* Use token-type BLOCKNAME for symbols that happen to be defined as
|
||
functions or symtabs. 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;
|
||
int is_a_field_of_this = 0;
|
||
int hextype;
|
||
|
||
sym = lookup_symbol (tmp, expression_context_block,
|
||
VAR_NAMESPACE,
|
||
current_language->la_language == language_cplus
|
||
? &is_a_field_of_this : NULL,
|
||
NULL);
|
||
if ((sym && SYMBOL_CLASS (sym) == LOC_BLOCK) ||
|
||
lookup_partial_symtab (tmp))
|
||
{
|
||
yylval.ssym.sym = sym;
|
||
yylval.ssym.is_a_field_of_this = is_a_field_of_this;
|
||
return BLOCKNAME;
|
||
}
|
||
if (sym && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
|
||
{
|
||
yylval.tsym.type = SYMBOL_TYPE (sym);
|
||
return TYPENAME;
|
||
}
|
||
if ((yylval.tsym.type = lookup_primitive_typename (tmp)) != 0)
|
||
return TYPENAME;
|
||
|
||
/* Input names that aren't symbols but ARE valid hex numbers,
|
||
when the input radix permits them, can be names or numbers
|
||
depending on the parse. Note we support radixes > 16 here. */
|
||
if (!sym &&
|
||
((tokstart[0] >= 'a' && tokstart[0] < 'a' + input_radix - 10) ||
|
||
(tokstart[0] >= 'A' && tokstart[0] < 'A' + input_radix - 10)))
|
||
{
|
||
YYSTYPE newlval; /* Its value is ignored. */
|
||
hextype = parse_number (tokstart, namelen, 0, &newlval);
|
||
if (hextype == INT)
|
||
{
|
||
yylval.ssym.sym = sym;
|
||
yylval.ssym.is_a_field_of_this = is_a_field_of_this;
|
||
return NAME_OR_INT;
|
||
}
|
||
}
|
||
|
||
/* Any other kind of symbol */
|
||
yylval.ssym.sym = sym;
|
||
yylval.ssym.is_a_field_of_this = is_a_field_of_this;
|
||
return NAME;
|
||
}
|
||
}
|
||
|
||
void
|
||
yyerror (msg)
|
||
char *msg;
|
||
{
|
||
error (msg ? msg : "Invalid syntax in expression.");
|
||
}
|
||
|
||
/* Print the character C on STREAM as part of the contents of a literal
|
||
string whose delimiter is QUOTER. Note that that format for printing
|
||
characters and strings is language specific. */
|
||
|
||
static void
|
||
emit_char (c, stream, quoter)
|
||
register int c;
|
||
FILE *stream;
|
||
int quoter;
|
||
{
|
||
|
||
c &= 0xFF; /* Avoid sign bit follies */
|
||
|
||
if ( c < 0x20 || /* Low control chars */
|
||
(c >= 0x7F && c < 0xA0) || /* DEL, High controls */
|
||
(sevenbit_strings && c >= 0x80)) { /* high order bit set */
|
||
switch (c)
|
||
{
|
||
case '\n':
|
||
fputs_filtered ("\\n", stream);
|
||
break;
|
||
case '\b':
|
||
fputs_filtered ("\\b", stream);
|
||
break;
|
||
case '\t':
|
||
fputs_filtered ("\\t", stream);
|
||
break;
|
||
case '\f':
|
||
fputs_filtered ("\\f", stream);
|
||
break;
|
||
case '\r':
|
||
fputs_filtered ("\\r", stream);
|
||
break;
|
||
case '\033':
|
||
fputs_filtered ("\\e", stream);
|
||
break;
|
||
case '\007':
|
||
fputs_filtered ("\\a", stream);
|
||
break;
|
||
default:
|
||
fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
|
||
break;
|
||
}
|
||
} else {
|
||
if (c == '\\' || c == quoter)
|
||
{
|
||
fputs_filtered ("\\", stream);
|
||
}
|
||
fprintf_filtered (stream, "%c", c);
|
||
}
|
||
}
|
||
|
||
static void
|
||
c_printchar (c, stream)
|
||
int c;
|
||
FILE *stream;
|
||
{
|
||
fputs_filtered ("'", stream);
|
||
emit_char (c, stream, '\'');
|
||
fputs_filtered ("'", stream);
|
||
}
|
||
|
||
/* Print the character string STRING, printing at most LENGTH characters.
|
||
Printing stops early if the number hits print_max; repeat counts
|
||
are printed as appropriate. Print ellipses at the end if we
|
||
had to stop before printing LENGTH characters, or if FORCE_ELLIPSES. */
|
||
|
||
static void
|
||
c_printstr (stream, string, length, force_ellipses)
|
||
FILE *stream;
|
||
char *string;
|
||
unsigned int length;
|
||
int force_ellipses;
|
||
{
|
||
register unsigned int i;
|
||
unsigned int things_printed = 0;
|
||
int in_quotes = 0;
|
||
int need_comma = 0;
|
||
extern int inspect_it;
|
||
extern int repeat_count_threshold;
|
||
extern int print_max;
|
||
|
||
if (length == 0)
|
||
{
|
||
fputs_filtered ("\"\"", stdout);
|
||
return;
|
||
}
|
||
|
||
for (i = 0; i < length && things_printed < print_max; ++i)
|
||
{
|
||
/* Position of the character we are examining
|
||
to see whether it is repeated. */
|
||
unsigned int rep1;
|
||
/* Number of repetitions we have detected so far. */
|
||
unsigned int reps;
|
||
|
||
QUIT;
|
||
|
||
if (need_comma)
|
||
{
|
||
fputs_filtered (", ", stream);
|
||
need_comma = 0;
|
||
}
|
||
|
||
rep1 = i + 1;
|
||
reps = 1;
|
||
while (rep1 < length && string[rep1] == string[i])
|
||
{
|
||
++rep1;
|
||
++reps;
|
||
}
|
||
|
||
if (reps > repeat_count_threshold)
|
||
{
|
||
if (in_quotes)
|
||
{
|
||
if (inspect_it)
|
||
fputs_filtered ("\\\", ", stream);
|
||
else
|
||
fputs_filtered ("\", ", stream);
|
||
in_quotes = 0;
|
||
}
|
||
c_printchar (string[i], stream);
|
||
fprintf_filtered (stream, " <repeats %u times>", reps);
|
||
i = rep1 - 1;
|
||
things_printed += repeat_count_threshold;
|
||
need_comma = 1;
|
||
}
|
||
else
|
||
{
|
||
if (!in_quotes)
|
||
{
|
||
if (inspect_it)
|
||
fputs_filtered ("\\\"", stream);
|
||
else
|
||
fputs_filtered ("\"", stream);
|
||
in_quotes = 1;
|
||
}
|
||
emit_char (string[i], stream, '"');
|
||
++things_printed;
|
||
}
|
||
}
|
||
|
||
/* Terminate the quotes if necessary. */
|
||
if (in_quotes)
|
||
{
|
||
if (inspect_it)
|
||
fputs_filtered ("\\\"", stream);
|
||
else
|
||
fputs_filtered ("\"", stream);
|
||
}
|
||
|
||
if (force_ellipses || i < length)
|
||
fputs_filtered ("...", stream);
|
||
}
|
||
|
||
|
||
/* Table mapping opcodes into strings for printing operators
|
||
and precedences of the operators. */
|
||
|
||
const static struct op_print c_op_print_tab[] =
|
||
{
|
||
{",", BINOP_COMMA, PREC_COMMA, 0},
|
||
{"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
|
||
{"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
|
||
{"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
|
||
{"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
|
||
{"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
|
||
{"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 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},
|
||
{">>", BINOP_RSH, PREC_SHIFT, 0},
|
||
{"<<", BINOP_LSH, PREC_SHIFT, 0},
|
||
{"+", BINOP_ADD, PREC_ADD, 0},
|
||
{"-", BINOP_SUB, PREC_ADD, 0},
|
||
{"*", BINOP_MUL, PREC_MUL, 0},
|
||
{"/", BINOP_DIV, PREC_MUL, 0},
|
||
{"%", BINOP_REM, PREC_MUL, 0},
|
||
{"@", BINOP_REPEAT, PREC_REPEAT, 0},
|
||
{"-", UNOP_NEG, PREC_PREFIX, 0},
|
||
{"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
|
||
{"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
|
||
{"*", UNOP_IND, PREC_PREFIX, 0},
|
||
{"&", UNOP_ADDR, PREC_PREFIX, 0},
|
||
{"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
|
||
{"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
|
||
{"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
|
||
/* C++ */
|
||
{"::", BINOP_SCOPE, PREC_PREFIX, 0},
|
||
{NULL, 0, 0, 0}
|
||
};
|
||
|
||
/* These variables point to the objects
|
||
representing the predefined C data types. */
|
||
|
||
struct type *builtin_type_void;
|
||
struct type *builtin_type_char;
|
||
struct type *builtin_type_short;
|
||
struct type *builtin_type_int;
|
||
struct type *builtin_type_long;
|
||
struct type *builtin_type_long_long;
|
||
struct type *builtin_type_signed_char;
|
||
struct type *builtin_type_unsigned_char;
|
||
struct type *builtin_type_unsigned_short;
|
||
struct type *builtin_type_unsigned_int;
|
||
struct type *builtin_type_unsigned_long;
|
||
struct type *builtin_type_unsigned_long_long;
|
||
struct type *builtin_type_float;
|
||
struct type *builtin_type_double;
|
||
struct type *builtin_type_long_double;
|
||
struct type *builtin_type_complex;
|
||
struct type *builtin_type_double_complex;
|
||
|
||
struct type ** const (c_builtin_types[]) =
|
||
{
|
||
&builtin_type_int,
|
||
&builtin_type_long,
|
||
&builtin_type_short,
|
||
&builtin_type_char,
|
||
&builtin_type_float,
|
||
&builtin_type_double,
|
||
&builtin_type_void,
|
||
&builtin_type_long_long,
|
||
&builtin_type_signed_char,
|
||
&builtin_type_unsigned_char,
|
||
&builtin_type_unsigned_short,
|
||
&builtin_type_unsigned_int,
|
||
&builtin_type_unsigned_long,
|
||
&builtin_type_unsigned_long_long,
|
||
&builtin_type_long_double,
|
||
&builtin_type_complex,
|
||
&builtin_type_double_complex,
|
||
0
|
||
};
|
||
|
||
const struct language_defn c_language_defn = {
|
||
"c", /* Language name */
|
||
language_c,
|
||
c_builtin_types,
|
||
range_check_off,
|
||
type_check_off,
|
||
c_parse,
|
||
c_error,
|
||
c_printchar, /* Print a character constant */
|
||
c_printstr, /* Function to print string constant */
|
||
&BUILTIN_TYPE_LONGEST, /* longest signed integral type */
|
||
&BUILTIN_TYPE_UNSIGNED_LONGEST,/* longest unsigned integral type */
|
||
&builtin_type_double, /* longest floating point type */ /*FIXME*/
|
||
{"", "", "", ""}, /* Binary format info */
|
||
{"0%o", "0", "o", ""}, /* Octal format info */
|
||
{"%d", "", "d", ""}, /* Decimal format info */
|
||
{"0x%x", "0x", "x", ""}, /* Hex format info */
|
||
c_op_print_tab, /* expression operators for printing */
|
||
LANG_MAGIC
|
||
};
|
||
|
||
const struct language_defn cplus_language_defn = {
|
||
"c++", /* Language name */
|
||
language_cplus,
|
||
c_builtin_types,
|
||
range_check_off,
|
||
type_check_off,
|
||
c_parse,
|
||
c_error,
|
||
c_printchar, /* Print a character constant */
|
||
c_printstr, /* Function to print string constant */
|
||
&BUILTIN_TYPE_LONGEST, /* longest signed integral type */
|
||
&BUILTIN_TYPE_UNSIGNED_LONGEST,/* longest unsigned integral type */
|
||
&builtin_type_double, /* longest floating point type */ /*FIXME*/
|
||
{"", "", "", ""}, /* Binary format info */
|
||
{"0%o", "0", "o", ""}, /* Octal format info */
|
||
{"%d", "", "d", ""}, /* Decimal format info */
|
||
{"0x%x", "0x", "x", ""}, /* Hex format info */
|
||
c_op_print_tab, /* expression operators for printing */
|
||
LANG_MAGIC
|
||
};
|
||
|
||
void
|
||
_initialize_c_exp ()
|
||
{
|
||
builtin_type_void =
|
||
init_type (TYPE_CODE_VOID, 1,
|
||
0,
|
||
"void", (struct objfile *) NULL);
|
||
builtin_type_char =
|
||
init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
|
||
0,
|
||
"char", (struct objfile *) NULL);
|
||
builtin_type_signed_char =
|
||
init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
|
||
TYPE_FLAG_SIGNED,
|
||
"signed char", (struct objfile *) NULL);
|
||
builtin_type_unsigned_char =
|
||
init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
|
||
TYPE_FLAG_UNSIGNED,
|
||
"unsigned char", (struct objfile *) NULL);
|
||
builtin_type_short =
|
||
init_type (TYPE_CODE_INT, TARGET_SHORT_BIT / TARGET_CHAR_BIT,
|
||
0,
|
||
"short", (struct objfile *) NULL);
|
||
builtin_type_unsigned_short =
|
||
init_type (TYPE_CODE_INT, TARGET_SHORT_BIT / TARGET_CHAR_BIT,
|
||
TYPE_FLAG_UNSIGNED,
|
||
"unsigned short", (struct objfile *) NULL);
|
||
builtin_type_int =
|
||
init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
|
||
0,
|
||
"int", (struct objfile *) NULL);
|
||
builtin_type_unsigned_int =
|
||
init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
|
||
TYPE_FLAG_UNSIGNED,
|
||
"unsigned int", (struct objfile *) NULL);
|
||
builtin_type_long =
|
||
init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT,
|
||
0,
|
||
"long", (struct objfile *) NULL);
|
||
builtin_type_unsigned_long =
|
||
init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT,
|
||
TYPE_FLAG_UNSIGNED,
|
||
"unsigned long", (struct objfile *) NULL);
|
||
builtin_type_long_long =
|
||
init_type (TYPE_CODE_INT, TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
|
||
0,
|
||
"long long", (struct objfile *) NULL);
|
||
builtin_type_unsigned_long_long =
|
||
init_type (TYPE_CODE_INT, TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
|
||
TYPE_FLAG_UNSIGNED,
|
||
"unsigned long long", (struct objfile *) NULL);
|
||
builtin_type_float =
|
||
init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
|
||
0,
|
||
"float", (struct objfile *) NULL);
|
||
builtin_type_double =
|
||
init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
|
||
0,
|
||
"double", (struct objfile *) NULL);
|
||
builtin_type_long_double =
|
||
init_type (TYPE_CODE_FLT, TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
|
||
0,
|
||
"long double", (struct objfile *) NULL);
|
||
builtin_type_complex =
|
||
init_type (TYPE_CODE_FLT, TARGET_COMPLEX_BIT / TARGET_CHAR_BIT,
|
||
0,
|
||
"complex", (struct objfile *) NULL);
|
||
builtin_type_double_complex =
|
||
init_type (TYPE_CODE_FLT, TARGET_DOUBLE_COMPLEX_BIT / TARGET_CHAR_BIT,
|
||
0,
|
||
"double complex", (struct objfile *) NULL);
|
||
|
||
add_language (&c_language_defn);
|
||
add_language (&cplus_language_defn);
|
||
}
|