/* YACC grammar for Modula-2 expressions, for GDB.
- Copyright (C) 1986, 1989, 1990, 1991 Free Software Foundation, Inc.
+ Copyright 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999,
+ 2000
+ 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.
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. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Parse a Modula-2 expression from text in a string,
and return the result as a struct expression pointer.
%{
#include "defs.h"
+#include "gdb_string.h"
#include "expression.h"
#include "language.h"
#include "value.h"
#include "parser-defs.h"
#include "m2-lang.h"
+#include "bfd.h" /* Required by objfiles.h. */
+#include "symfile.h" /* Required by objfiles.h. */
+#include "objfiles.h" /* For have_full_symbols and have_partial_symbols */
+#include "block.h"
/* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc),
as well as gratuitiously global symbol names, so we can have multiple
#define yylloc m2_lloc
#define yyreds m2_reds /* With YYDEBUG defined */
#define yytoks m2_toks /* With YYDEBUG defined */
+#define yyname m2_name /* With YYDEBUG defined */
+#define yyrule m2_rule /* With YYDEBUG defined */
+#define yylhs m2_yylhs
+#define yylen m2_yylen
+#define yydefred m2_yydefred
+#define yydgoto m2_yydgoto
+#define yysindex m2_yysindex
+#define yyrindex m2_yyrindex
+#define yygindex m2_yygindex
+#define yytable m2_yytable
+#define yycheck m2_yycheck
#ifndef YYDEBUG
-#define YYDEBUG 0 /* Default to no yydebug support */
+#define YYDEBUG 1 /* Default to yydebug support */
#endif
-int
-yyparse PARAMS ((void));
+#define YYFPRINTF parser_fprintf
-static int
-yylex PARAMS ((void));
+int yyparse (void);
-void
-yyerror PARAMS ((char *));
+static int yylex (void);
+
+void yyerror (char *);
#if 0
-static char *
-make_qualname PARAMS ((char *, char *));
+static char *make_qualname (char *, char *);
#endif
-static int
-parse_number PARAMS ((int));
+static int parse_number (int);
/* The sign of the number being parsed. */
static int number_sign = 1;
%union
{
LONGEST lval;
- unsigned LONGEST ulval;
- double dval;
+ ULONGEST ulval;
+ DOUBLEST dval;
struct symbol *sym;
struct type *tval;
struct stoken sval;
/* The GDB scope operator */
%token COLONCOLON
-%token <lval> LAST REGNAME
-
-%token <ivar> INTERNAL_VAR
+%token <voidval> INTERNAL_VAR
/* M2 tokens */
%left ','
exp : exp '^' %prec UNARY
{ write_exp_elt_opcode (UNOP_IND); }
+ ;
exp : '-'
{ number_sign = -1; }
exp : EXCL '(' exp ',' exp ')'
{ error("Sets are not implemented.");}
+ ;
set : '{' arglist '}'
{ error("Sets are not implemented.");}
exp : variable
;
-/* The GDB internal variable $$, et al. */
-exp : LAST
- { write_exp_elt_opcode (OP_LAST);
- write_exp_elt_longcst ((LONGEST) $1);
- write_exp_elt_opcode (OP_LAST); }
- ;
-
-exp : REGNAME
- { write_exp_elt_opcode (OP_REGISTER);
- write_exp_elt_longcst ((LONGEST) $1);
- write_exp_elt_opcode (OP_REGISTER); }
- ;
-
exp : SIZE '(' type ')' %prec UNARY
{ write_exp_elt_opcode (OP_LONG);
write_exp_elt_type (builtin_type_int);
fblock : BLOCKNAME
{ struct symbol *sym
= lookup_symbol (copy_name ($1), expression_context_block,
- VAR_NAMESPACE, 0, NULL);
+ VAR_DOMAIN, 0, NULL);
$$ = sym;}
;
fblock : block COLONCOLON BLOCKNAME
{ struct symbol *tem
= lookup_symbol (copy_name ($3), $1,
- VAR_NAMESPACE, 0, NULL);
+ VAR_DOMAIN, 0, NULL);
if (!tem || SYMBOL_CLASS (tem) != LOC_BLOCK)
error ("No function \"%s\" in specified context.",
copy_name ($3));
/* Useful for assigning to PROCEDURE variables */
variable: fblock
{ write_exp_elt_opcode(OP_VAR_VALUE);
+ write_exp_elt_block (NULL);
write_exp_elt_sym ($1);
write_exp_elt_opcode (OP_VAR_VALUE); }
;
/* GDB internal ($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);
+ VAR_DOMAIN, 0, NULL);
if (sym == 0)
error ("No symbol \"%s\" in specified context.",
copy_name ($3));
write_exp_elt_opcode (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); }
;
sym = lookup_symbol (copy_name ($1),
expression_context_block,
- VAR_NAMESPACE,
+ VAR_DOMAIN,
&is_a_field_of_this,
NULL);
if (sym)
{
- switch (sym->class)
+ if (symbol_read_needs_frame (sym))
{
- case LOC_REGISTER:
- case LOC_ARG:
- case LOC_LOCAL:
- case LOC_REF_ARG:
- case LOC_REGPARM:
- case LOC_LOCAL_ARG:
if (innermost_block == 0 ||
- contained_in (block_found,
+ contained_in (block_found,
innermost_block))
innermost_block = block_found;
- 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:
- case LOC_OPTIMIZED_OUT:
- /* These are listed so gcc -Wall will reveal
- un-handled cases. */
- break;
}
+
write_exp_elt_opcode (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);
}
else
{
struct minimal_symbol *msymbol;
- register char *arg = copy_name ($1);
+ char *arg = copy_name ($1);
- msymbol = lookup_minimal_symbol (arg,
- (struct objfile *) NULL);
+ msymbol =
+ lookup_minimal_symbol (arg, NULL, NULL);
if (msymbol != NULL)
{
- write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (builtin_type_int);
- write_exp_elt_longcst ((LONGEST) SYMBOL_VALUE_ADDRESS (msymbol));
- 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);
+ write_exp_msymbol
+ (msymbol,
+ lookup_function_type (builtin_type_int),
+ builtin_type_int);
}
else if (!have_full_symbols () && !have_partial_symbols ())
error ("No symbol table is loaded. Use the \"symbol-file\" command.");
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;
+ char *p = lexptr;
+ LONGEST n = 0;
+ LONGEST prevn = 0;
+ int c,i,ischar=0;
+ int base = input_radix;
+ int len = olen;
int unsigned_p = number_sign == 1 ? 1 : 0;
if(p[len-1] == 'H')
static int
yylex ()
{
- register int c;
- register int namelen;
- register int i;
- register char *tokstart;
- register char quote;
+ int c;
+ int namelen;
+ int i;
+ char *tokstart;
+ char quote;
retry:
+ prev_lexptr = lexptr;
+
tokstart = lexptr;
/* See if it is a special token of length 2 */
- for( i = 0 ; i < sizeof tokentab2 / sizeof tokentab2[0] ; i++)
- if(STREQN(tokentab2[i].name, tokstart, 2))
+ for( i = 0 ; i < (int) (sizeof tokentab2 / sizeof tokentab2[0]) ; i++)
+ if(DEPRECATED_STREQN(tokentab2[i].name, tokstart, 2))
{
lexptr += 2;
return tokentab2[i].token;
{
/* It's a number. */
int got_dot = 0, got_e = 0;
- register char *p = tokstart;
+ char *p = tokstart;
int toktype;
for (++p ;; ++p)
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])
- && STREQN (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)
- && STREQN (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) && STREQN(tokstart,keytab[i].keyw,namelen))
+ for(i = 0 ; i < (int) (sizeof(keytab) / sizeof(keytab[0])) ; i++)
+ if(namelen == strlen(keytab[i].keyw) && DEPRECATED_STREQN(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);
+ write_dollar_variable (yylval.sval);
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
if (lookup_partial_symtab (tmp))
return BLOCKNAME;
sym = lookup_symbol (tmp, expression_context_block,
- VAR_NAMESPACE, 0, NULL);
+ VAR_DOMAIN, 0, NULL);
if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK)
return BLOCKNAME;
if (lookup_typename (copy_name (yylval.sval), expression_context_block, 1))
if(sym)
{
- switch(sym->class)
+ switch(sym->aclass)
{
case LOC_STATIC:
case LOC_REGISTER:
case LOC_ARG:
case LOC_REF_ARG:
case LOC_REGPARM:
+ case LOC_REGPARM_ADDR:
case LOC_LOCAL:
case LOC_LOCAL_ARG:
+ case LOC_BASEREG:
+ case LOC_BASEREG_ARG:
case LOC_CONST:
case LOC_CONST_BYTES:
+ case LOC_OPTIMIZED_OUT:
+ case LOC_COMPUTED:
+ case LOC_COMPUTED_ARG:
return NAME;
case LOC_TYPEDEF:
error("internal: Undefined class in m2lex()");
case LOC_LABEL:
+ case LOC_UNRESOLVED:
error("internal: Unforseen case in m2lex()");
+
+ default:
+ error ("unhandled token in m2lex()");
+ break;
}
}
else
{
/* Built-in BOOLEAN type. This is sort of a hack. */
- if(STREQN(tokstart,"TRUE",4))
+ if(DEPRECATED_STREQN(tokstart,"TRUE",4))
{
yylval.ulval = 1;
return M2_TRUE;
}
- else if(STREQN(tokstart,"FALSE",5))
+ else if(DEPRECATED_STREQN(tokstart,"FALSE",5))
{
yylval.ulval = 0;
return M2_FALSE;
#endif /* 0 */
void
-yyerror(msg)
- char *msg; /* unused */
+yyerror (msg)
+ char *msg;
{
- printf("Parsing: %s\n",lexptr);
- if (yychar < 256)
- error("Invalid syntax in expression near character '%c'.",yychar);
- else
- error("Invalid syntax in expression");
-}
+ if (prev_lexptr)
+ lexptr = prev_lexptr;
+ error ("A %s in expression, near `%s'.", (msg ? msg : "error"), lexptr);
+}
projects / deliverable / binutils-gdb.git / blobdiff