/* YACC grammar for Modula-2 expressions, for GDB.
- Copyright (C) 1986, 1989-1996, 1999-2000, 2007-2012 Free Software
- Foundation, Inc.
+ Copyright (C) 1986-2015 Free Software Foundation, Inc.
Generated from expread.y (now c-exp.y) and contributed by the Department
of Computer Science at the State University of New York at Buffalo, 1991.
%{
#include "defs.h"
-#include "gdb_string.h"
#include "expression.h"
#include "language.h"
#include "value.h"
#include "objfiles.h" /* For have_full_symbols and have_partial_symbols */
#include "block.h"
-#define parse_type builtin_type (parse_gdbarch)
-#define parse_m2_type builtin_m2_type (parse_gdbarch)
+#define parse_type(ps) builtin_type (parse_gdbarch (ps))
+#define parse_m2_type(ps) builtin_m2_type (parse_gdbarch (ps))
/* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc),
as well as gratuitiously global symbol names, so we can have multiple
generators need to be fixed instead of adding those names to this list. */
#define yymaxdepth m2_maxdepth
-#define yyparse m2_parse
+#define yyparse m2_parse_internal
#define yylex m2_lex
#define yyerror m2_error
#define yylval m2_lval
#define yygindex m2_yygindex
#define yytable m2_yytable
#define yycheck m2_yycheck
+#define yyss m2_yyss
+#define yysslim m2_yysslim
+#define yyssp m2_yyssp
+#define yystacksize m2_yystacksize
+#define yyvs m2_yyvs
+#define yyvsp m2_yyvsp
#ifndef YYDEBUG
#define YYDEBUG 1 /* Default to yydebug support */
#define YYFPRINTF parser_fprintf
+/* The state of the parser, used internally when we are parsing the
+ expression. */
+
+static struct parser_state *pstate = NULL;
+
int yyparse (void);
static int yylex (void);
void yyerror (char *);
-#if 0
-static char *make_qualname (char *, char *);
-#endif
-
static int parse_number (int);
/* The sign of the number being parsed. */
static int number_sign = 1;
-/* The block that the module specified by the qualifer on an identifer is
- contained in, */
-#if 0
-static struct block *modblock=0;
-#endif
-
%}
/* Although the yacc "value" of an expression is not used,
struct type *tval;
struct stoken sval;
int voidval;
- struct block *bval;
+ const struct block *bval;
enum exp_opcode opcode;
struct internalvar *ivar;
;
type_exp: type
- { write_exp_elt_opcode(OP_TYPE);
- write_exp_elt_type($1);
- write_exp_elt_opcode(OP_TYPE);
+ { write_exp_elt_opcode (pstate, OP_TYPE);
+ write_exp_elt_type (pstate, $1);
+ write_exp_elt_opcode (pstate, OP_TYPE);
}
;
/* Expressions */
exp : exp '^' %prec UNARY
- { write_exp_elt_opcode (UNOP_IND); }
+ { write_exp_elt_opcode (pstate, UNOP_IND); }
;
exp : '-'
{ number_sign = -1; }
exp %prec UNARY
{ number_sign = 1;
- write_exp_elt_opcode (UNOP_NEG); }
+ write_exp_elt_opcode (pstate, UNOP_NEG); }
;
exp : '+' exp %prec UNARY
- { write_exp_elt_opcode(UNOP_PLUS); }
+ { write_exp_elt_opcode (pstate, UNOP_PLUS); }
;
exp : not_exp exp %prec UNARY
- { write_exp_elt_opcode (UNOP_LOGICAL_NOT); }
+ { write_exp_elt_opcode (pstate, UNOP_LOGICAL_NOT); }
;
not_exp : NOT
;
exp : CAP '(' exp ')'
- { write_exp_elt_opcode (UNOP_CAP); }
+ { write_exp_elt_opcode (pstate, UNOP_CAP); }
;
exp : ORD '(' exp ')'
- { write_exp_elt_opcode (UNOP_ORD); }
+ { write_exp_elt_opcode (pstate, UNOP_ORD); }
;
exp : ABS '(' exp ')'
- { write_exp_elt_opcode (UNOP_ABS); }
+ { write_exp_elt_opcode (pstate, UNOP_ABS); }
;
exp : HIGH '(' exp ')'
- { write_exp_elt_opcode (UNOP_HIGH); }
+ { write_exp_elt_opcode (pstate, UNOP_HIGH); }
;
exp : MIN_FUNC '(' type ')'
- { write_exp_elt_opcode (UNOP_MIN);
- write_exp_elt_type ($3);
- write_exp_elt_opcode (UNOP_MIN); }
+ { write_exp_elt_opcode (pstate, UNOP_MIN);
+ write_exp_elt_type (pstate, $3);
+ write_exp_elt_opcode (pstate, UNOP_MIN); }
;
exp : MAX_FUNC '(' type ')'
- { write_exp_elt_opcode (UNOP_MAX);
- write_exp_elt_type ($3);
- write_exp_elt_opcode (UNOP_MAX); }
+ { write_exp_elt_opcode (pstate, UNOP_MAX);
+ write_exp_elt_type (pstate, $3);
+ write_exp_elt_opcode (pstate, UNOP_MAX); }
;
exp : FLOAT_FUNC '(' exp ')'
- { write_exp_elt_opcode (UNOP_FLOAT); }
+ { write_exp_elt_opcode (pstate, UNOP_FLOAT); }
;
exp : VAL '(' type ',' exp ')'
- { write_exp_elt_opcode (BINOP_VAL);
- write_exp_elt_type ($3);
- write_exp_elt_opcode (BINOP_VAL); }
+ { write_exp_elt_opcode (pstate, BINOP_VAL);
+ write_exp_elt_type (pstate, $3);
+ write_exp_elt_opcode (pstate, BINOP_VAL); }
;
exp : CHR '(' exp ')'
- { write_exp_elt_opcode (UNOP_CHR); }
+ { write_exp_elt_opcode (pstate, UNOP_CHR); }
;
exp : ODD '(' exp ')'
- { write_exp_elt_opcode (UNOP_ODD); }
+ { write_exp_elt_opcode (pstate, UNOP_ODD); }
;
exp : TRUNC '(' exp ')'
- { write_exp_elt_opcode (UNOP_TRUNC); }
+ { write_exp_elt_opcode (pstate, UNOP_TRUNC); }
;
exp : TSIZE '(' exp ')'
- { write_exp_elt_opcode (UNOP_SIZEOF); }
+ { write_exp_elt_opcode (pstate, UNOP_SIZEOF); }
;
exp : SIZE exp %prec UNARY
- { write_exp_elt_opcode (UNOP_SIZEOF); }
+ { write_exp_elt_opcode (pstate, UNOP_SIZEOF); }
;
exp : INC '(' exp ')'
- { write_exp_elt_opcode(UNOP_PREINCREMENT); }
+ { write_exp_elt_opcode (pstate, UNOP_PREINCREMENT); }
;
exp : INC '(' exp ',' exp ')'
- { write_exp_elt_opcode(BINOP_ASSIGN_MODIFY);
- write_exp_elt_opcode(BINOP_ADD);
- write_exp_elt_opcode(BINOP_ASSIGN_MODIFY); }
+ { write_exp_elt_opcode (pstate, BINOP_ASSIGN_MODIFY);
+ write_exp_elt_opcode (pstate, BINOP_ADD);
+ write_exp_elt_opcode (pstate,
+ BINOP_ASSIGN_MODIFY); }
;
exp : DEC '(' exp ')'
- { write_exp_elt_opcode(UNOP_PREDECREMENT);}
+ { write_exp_elt_opcode (pstate, UNOP_PREDECREMENT);}
;
exp : DEC '(' exp ',' exp ')'
- { write_exp_elt_opcode(BINOP_ASSIGN_MODIFY);
- write_exp_elt_opcode(BINOP_SUB);
- write_exp_elt_opcode(BINOP_ASSIGN_MODIFY); }
+ { write_exp_elt_opcode (pstate, BINOP_ASSIGN_MODIFY);
+ write_exp_elt_opcode (pstate, BINOP_SUB);
+ write_exp_elt_opcode (pstate,
+ BINOP_ASSIGN_MODIFY); }
;
exp : exp DOT NAME
- { write_exp_elt_opcode (STRUCTOP_STRUCT);
- write_exp_string ($3);
- write_exp_elt_opcode (STRUCTOP_STRUCT); }
+ { write_exp_elt_opcode (pstate, STRUCTOP_STRUCT);
+ write_exp_string (pstate, $3);
+ write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); }
;
exp : set
function types */
{ start_arglist(); }
non_empty_arglist ']' %prec DOT
- { write_exp_elt_opcode (MULTI_SUBSCRIPT);
- write_exp_elt_longcst ((LONGEST) end_arglist());
- write_exp_elt_opcode (MULTI_SUBSCRIPT); }
+ { write_exp_elt_opcode (pstate, MULTI_SUBSCRIPT);
+ write_exp_elt_longcst (pstate,
+ (LONGEST) end_arglist());
+ write_exp_elt_opcode (pstate, MULTI_SUBSCRIPT); }
;
exp : exp '[' exp ']'
- { write_exp_elt_opcode (BINOP_SUBSCRIPT); }
+ { write_exp_elt_opcode (pstate, BINOP_SUBSCRIPT); }
;
exp : exp '('
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); }
+ { write_exp_elt_opcode (pstate, OP_FUNCALL);
+ write_exp_elt_longcst (pstate,
+ (LONGEST) end_arglist ());
+ write_exp_elt_opcode (pstate, OP_FUNCALL); }
;
arglist :
/* GDB construct */
exp : '{' type '}' exp %prec UNARY
- { write_exp_elt_opcode (UNOP_MEMVAL);
- write_exp_elt_type ($2);
- write_exp_elt_opcode (UNOP_MEMVAL); }
+ { write_exp_elt_opcode (pstate, UNOP_MEMVAL);
+ write_exp_elt_type (pstate, $2);
+ write_exp_elt_opcode (pstate, UNOP_MEMVAL); }
;
exp : type '(' exp ')' %prec UNARY
- { write_exp_elt_opcode (UNOP_CAST);
- write_exp_elt_type ($1);
- write_exp_elt_opcode (UNOP_CAST); }
+ { write_exp_elt_opcode (pstate, UNOP_CAST);
+ write_exp_elt_type (pstate, $1);
+ write_exp_elt_opcode (pstate, UNOP_CAST); }
;
exp : '(' exp ')'
/* GDB construct */
exp : exp '@' exp
- { write_exp_elt_opcode (BINOP_REPEAT); }
+ { write_exp_elt_opcode (pstate, BINOP_REPEAT); }
;
exp : exp '*' exp
- { write_exp_elt_opcode (BINOP_MUL); }
+ { write_exp_elt_opcode (pstate, BINOP_MUL); }
;
exp : exp '/' exp
- { write_exp_elt_opcode (BINOP_DIV); }
+ { write_exp_elt_opcode (pstate, BINOP_DIV); }
;
exp : exp DIV exp
- { write_exp_elt_opcode (BINOP_INTDIV); }
+ { write_exp_elt_opcode (pstate, BINOP_INTDIV); }
;
exp : exp MOD exp
- { write_exp_elt_opcode (BINOP_REM); }
+ { write_exp_elt_opcode (pstate, BINOP_REM); }
;
exp : exp '+' exp
- { write_exp_elt_opcode (BINOP_ADD); }
+ { write_exp_elt_opcode (pstate, BINOP_ADD); }
;
exp : exp '-' exp
- { write_exp_elt_opcode (BINOP_SUB); }
+ { write_exp_elt_opcode (pstate, BINOP_SUB); }
;
exp : exp '=' exp
- { write_exp_elt_opcode (BINOP_EQUAL); }
+ { write_exp_elt_opcode (pstate, BINOP_EQUAL); }
;
exp : exp NOTEQUAL exp
- { write_exp_elt_opcode (BINOP_NOTEQUAL); }
+ { write_exp_elt_opcode (pstate, BINOP_NOTEQUAL); }
| exp '#' exp
- { write_exp_elt_opcode (BINOP_NOTEQUAL); }
+ { write_exp_elt_opcode (pstate, BINOP_NOTEQUAL); }
;
exp : exp LEQ exp
- { write_exp_elt_opcode (BINOP_LEQ); }
+ { write_exp_elt_opcode (pstate, BINOP_LEQ); }
;
exp : exp GEQ exp
- { write_exp_elt_opcode (BINOP_GEQ); }
+ { write_exp_elt_opcode (pstate, BINOP_GEQ); }
;
exp : exp '<' exp
- { write_exp_elt_opcode (BINOP_LESS); }
+ { write_exp_elt_opcode (pstate, BINOP_LESS); }
;
exp : exp '>' exp
- { write_exp_elt_opcode (BINOP_GTR); }
+ { write_exp_elt_opcode (pstate, BINOP_GTR); }
;
exp : exp LOGICAL_AND exp
- { write_exp_elt_opcode (BINOP_LOGICAL_AND); }
+ { write_exp_elt_opcode (pstate, BINOP_LOGICAL_AND); }
;
exp : exp OROR exp
- { write_exp_elt_opcode (BINOP_LOGICAL_OR); }
+ { write_exp_elt_opcode (pstate, BINOP_LOGICAL_OR); }
;
exp : exp ASSIGN exp
- { write_exp_elt_opcode (BINOP_ASSIGN); }
+ { write_exp_elt_opcode (pstate, BINOP_ASSIGN); }
;
/* Constants */
exp : M2_TRUE
- { write_exp_elt_opcode (OP_BOOL);
- write_exp_elt_longcst ((LONGEST) $1);
- write_exp_elt_opcode (OP_BOOL); }
+ { write_exp_elt_opcode (pstate, OP_BOOL);
+ write_exp_elt_longcst (pstate, (LONGEST) $1);
+ write_exp_elt_opcode (pstate, OP_BOOL); }
;
exp : M2_FALSE
- { write_exp_elt_opcode (OP_BOOL);
- write_exp_elt_longcst ((LONGEST) $1);
- write_exp_elt_opcode (OP_BOOL); }
+ { write_exp_elt_opcode (pstate, OP_BOOL);
+ write_exp_elt_longcst (pstate, (LONGEST) $1);
+ write_exp_elt_opcode (pstate, OP_BOOL); }
;
exp : INT
- { write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (parse_m2_type->builtin_int);
- write_exp_elt_longcst ((LONGEST) $1);
- write_exp_elt_opcode (OP_LONG); }
+ { write_exp_elt_opcode (pstate, OP_LONG);
+ write_exp_elt_type (pstate,
+ parse_m2_type (pstate)->builtin_int);
+ write_exp_elt_longcst (pstate, (LONGEST) $1);
+ write_exp_elt_opcode (pstate, OP_LONG); }
;
exp : UINT
{
- write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (parse_m2_type->builtin_card);
- write_exp_elt_longcst ((LONGEST) $1);
- write_exp_elt_opcode (OP_LONG);
+ write_exp_elt_opcode (pstate, OP_LONG);
+ write_exp_elt_type (pstate,
+ parse_m2_type (pstate)
+ ->builtin_card);
+ write_exp_elt_longcst (pstate, (LONGEST) $1);
+ write_exp_elt_opcode (pstate, OP_LONG);
}
;
exp : CHAR
- { write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (parse_m2_type->builtin_char);
- write_exp_elt_longcst ((LONGEST) $1);
- write_exp_elt_opcode (OP_LONG); }
+ { write_exp_elt_opcode (pstate, OP_LONG);
+ write_exp_elt_type (pstate,
+ parse_m2_type (pstate)
+ ->builtin_char);
+ write_exp_elt_longcst (pstate, (LONGEST) $1);
+ write_exp_elt_opcode (pstate, OP_LONG); }
;
exp : FLOAT
- { write_exp_elt_opcode (OP_DOUBLE);
- write_exp_elt_type (parse_m2_type->builtin_real);
- write_exp_elt_dblcst ($1);
- write_exp_elt_opcode (OP_DOUBLE); }
+ { write_exp_elt_opcode (pstate, OP_DOUBLE);
+ write_exp_elt_type (pstate,
+ parse_m2_type (pstate)
+ ->builtin_real);
+ write_exp_elt_dblcst (pstate, $1);
+ write_exp_elt_opcode (pstate, OP_DOUBLE); }
;
exp : variable
;
exp : SIZE '(' type ')' %prec UNARY
- { write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (parse_type->builtin_int);
- write_exp_elt_longcst ((LONGEST) TYPE_LENGTH ($3));
- write_exp_elt_opcode (OP_LONG); }
+ { write_exp_elt_opcode (pstate, OP_LONG);
+ write_exp_elt_type (pstate,
+ parse_type (pstate)->builtin_int);
+ write_exp_elt_longcst (pstate,
+ (LONGEST) TYPE_LENGTH ($3));
+ write_exp_elt_opcode (pstate, OP_LONG); }
;
exp : STRING
- { write_exp_elt_opcode (OP_M2_STRING);
- write_exp_string ($1);
- write_exp_elt_opcode (OP_M2_STRING); }
+ { write_exp_elt_opcode (pstate, OP_M2_STRING);
+ write_exp_string (pstate, $1);
+ write_exp_elt_opcode (pstate, OP_M2_STRING); }
;
/* This will be used for extensions later. Like adding modules. */
fblock : BLOCKNAME
{ struct symbol *sym
- = lookup_symbol (copy_name ($1), expression_context_block,
+ = lookup_symbol (copy_name ($1),
+ expression_context_block,
VAR_DOMAIN, 0);
$$ = sym;}
;
/* Useful for assigning to PROCEDURE variables */
variable: fblock
- { write_exp_elt_opcode(OP_VAR_VALUE);
- write_exp_elt_block (NULL);
- write_exp_elt_sym ($1);
- write_exp_elt_opcode (OP_VAR_VALUE); }
+ { write_exp_elt_opcode (pstate, OP_VAR_VALUE);
+ write_exp_elt_block (pstate, NULL);
+ write_exp_elt_sym (pstate, $1);
+ write_exp_elt_opcode (pstate, OP_VAR_VALUE); }
;
/* GDB internal ($foo) variable */
if (sym == 0)
error (_("No symbol \"%s\" in specified context."),
copy_name ($3));
+ if (symbol_read_needs_frame (sym))
+ {
+ if (innermost_block == 0
+ || contained_in (block_found,
+ innermost_block))
+ innermost_block = block_found;
+ }
- write_exp_elt_opcode (OP_VAR_VALUE);
+ write_exp_elt_opcode (pstate, OP_VAR_VALUE);
/* block_found is set by lookup_symbol. */
- write_exp_elt_block (block_found);
- write_exp_elt_sym (sym);
- write_exp_elt_opcode (OP_VAR_VALUE); }
+ write_exp_elt_block (pstate, block_found);
+ write_exp_elt_sym (pstate, sym);
+ write_exp_elt_opcode (pstate, OP_VAR_VALUE); }
;
/* Base case for variables. */
variable: NAME
{ struct symbol *sym;
- int is_a_field_of_this;
+ struct field_of_this_result is_a_field_of_this;
sym = lookup_symbol (copy_name ($1),
expression_context_block,
innermost_block = block_found;
}
- write_exp_elt_opcode (OP_VAR_VALUE);
+ write_exp_elt_opcode (pstate, OP_VAR_VALUE);
/* We want to use the selected frame, not
another more inner frame which happens to
be in the same block. */
- write_exp_elt_block (NULL);
- write_exp_elt_sym (sym);
- write_exp_elt_opcode (OP_VAR_VALUE);
+ write_exp_elt_block (pstate, NULL);
+ write_exp_elt_sym (pstate, sym);
+ write_exp_elt_opcode (pstate, OP_VAR_VALUE);
}
else
{
- struct minimal_symbol *msymbol;
+ struct bound_minimal_symbol msymbol;
char *arg = copy_name ($1);
msymbol =
- lookup_minimal_symbol (arg, NULL, NULL);
- if (msymbol != NULL)
- write_exp_msymbol (msymbol);
+ lookup_bound_minimal_symbol (arg);
+ if (msymbol.minsym != NULL)
+ write_exp_msymbol (pstate, msymbol);
else if (!have_full_symbols () && !have_partial_symbols ())
error (_("No symbol table is loaded. Use the \"symbol-file\" command."));
else
type
: TYPENAME
- { $$ = lookup_typename (parse_language, parse_gdbarch,
+ { $$ = lookup_typename (parse_language (pstate),
+ parse_gdbarch (pstate),
copy_name ($1),
expression_context_block, 0); }
/*** Needs some error checking for the float case ***/
static int
-parse_number (olen)
- int olen;
+parse_number (int olen)
{
- char *p = lexptr;
+ const char *p = lexptr;
LONGEST n = 0;
LONGEST prevn = 0;
int c,i,ischar=0;
/* Read one token, getting characters through lexptr. */
-/* This is where we will check to make sure that the language and the operators used are
- compatible */
+/* This is where we will check to make sure that the language and the
+ operators used are compatible */
static int
yylex (void)
int c;
int namelen;
int i;
- char *tokstart;
+ const char *tokstart;
char quote;
retry:
{
/* It's a number. */
int got_dot = 0, got_e = 0;
- char *p = tokstart;
+ const char *p = tokstart;
int toktype;
for (++p ;; ++p)
if (*tokstart == '$')
{
- write_dollar_variable (yylval.sval);
+ write_dollar_variable (pstate, yylval.sval);
return INTERNAL_VAR;
}
sym = lookup_symbol (tmp, expression_context_block, VAR_DOMAIN, 0);
if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK)
return BLOCKNAME;
- if (lookup_typename (parse_language, parse_gdbarch,
- copy_name (yylval.sval), expression_context_block, 1))
+ if (lookup_typename (parse_language (pstate), parse_gdbarch (pstate),
+ copy_name (yylval.sval),
+ expression_context_block, 1))
return TYPENAME;
if(sym)
}
}
-#if 0 /* Unused */
-static char *
-make_qualname(mod,ident)
- char *mod, *ident;
+int
+m2_parse (struct parser_state *par_state)
{
- char *new = malloc(strlen(mod)+strlen(ident)+2);
+ int result;
+ struct cleanup *c = make_cleanup_clear_parser_state (&pstate);
+
+ /* Setting up the parser state. */
+ gdb_assert (par_state != NULL);
+ pstate = par_state;
+
+ result = yyparse ();
+ do_cleanups (c);
- strcpy(new,mod);
- strcat(new,".");
- strcat(new,ident);
- return new;
+ return result;
}
-#endif /* 0 */
void
-yyerror (msg)
- char *msg;
+yyerror (char *msg)
{
if (prev_lexptr)
lexptr = prev_lexptr;
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