gdb/expprint.c

   1 /* Print in infix form a struct expression.
   2    Copyright (C) 1986, 1989, 1991 Free Software Foundation, Inc.
   3
   4 This file is part of GDB.
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 #include "defs.h"
  21 #include "symtab.h"
  22 #include "gdbtypes.h"
  23 #include "expression.h"
  24 #include "value.h"
  25 #include "language.h"
  26 #include "parser-defs.h"
  27
  28 /* Prototypes for local functions */
  29
  30 static void
  31 print_subexp PARAMS ((struct expression *, int *, FILE *, enum precedence));
  32
  33 static void
  34 print_simple_m2_func PARAMS ((char *, struct expression *, int *, FILE *));
  35
  36 void
  37 print_expression (exp, stream)
  38      struct expression *exp;
  39      FILE *stream;
  40 {
  41   int pc = 0;
  42   print_subexp (exp, &pc, stream, PREC_NULL);
  43 }
  44
  45 /* Print the subexpression of EXP that starts in position POS, on STREAM.
  46    PREC is the precedence of the surrounding operator;
  47    if the precedence of the main operator of this subexpression is less,
  48    parentheses are needed here.  */
  49
  50 static void
  51 print_subexp (exp, pos, stream, prec)
  52      register struct expression *exp;
  53      register int *pos;
  54      FILE *stream;
  55      enum precedence prec;
  56 {
  57   register unsigned tem;
  58   register const struct op_print *op_print_tab;
  59   register int pc;
  60   unsigned nargs;
  61   register char *op_str;
  62   int assign_modify = 0;
  63   enum exp_opcode opcode;
  64   enum precedence myprec;
  65   /* Set to 1 for a right-associative operator.  */
  66   int assoc;
  67   value val;
  68   char *tempstr;
  69
  70   op_print_tab = exp->language_defn->la_op_print_tab;
  71   pc = (*pos)++;
  72   opcode = exp->elts[pc].opcode;
  73   switch (opcode)
  74     {
  75     /* Common ops */
  76
  77     case OP_SCOPE:
  78       myprec = PREC_PREFIX;
  79       assoc = 0;
  80       fputs_filtered (type_name_no_tag (exp->elts[pc + 1].type), stream);
  81       fputs_filtered ("::", stream);
  82       nargs = longest_to_int (exp->elts[pc + 2].longconst);
  83       (*pos) += 4 + BYTES_TO_EXP_ELEM (nargs + 1);
  84       fputs_filtered (&exp->elts[pc + 3].string, stream);
  85       return;
  86
  87     case OP_LONG:
  88       (*pos) += 3;
  89       value_print (value_from_longest (exp->elts[pc + 1].type,
  90                                        exp->elts[pc + 2].longconst),
  91                    stream, 0, Val_no_prettyprint);
  92       return;
  93
  94     case OP_DOUBLE:
  95       (*pos) += 3;
  96       value_print (value_from_double (exp->elts[pc + 1].type,
  97                                       exp->elts[pc + 2].doubleconst),
  98                    stream, 0, Val_no_prettyprint);
  99       return;
 100
 101     case OP_VAR_VALUE:
 102       (*pos) += 2;
 103       fputs_filtered (SYMBOL_SOURCE_NAME (exp->elts[pc + 1].symbol), stream);
 104       return;
 105
 106     case OP_LAST:
 107       (*pos) += 2;
 108       fprintf_filtered (stream, "$%d",
 109                         longest_to_int (exp->elts[pc + 1].longconst));
 110       return;
 111
 112     case OP_REGISTER:
 113       (*pos) += 2;
 114       fprintf_filtered (stream, "$%s",
 115                reg_names[longest_to_int (exp->elts[pc + 1].longconst)]);
 116       return;
 117
 118     case OP_BOOL:
 119       (*pos) += 2;
 120       fprintf_filtered (stream, "%s",
 121                         longest_to_int (exp->elts[pc + 1].longconst)
 122                         ? "TRUE" : "FALSE");
 123       return;
 124
 125     case OP_INTERNALVAR:
 126       (*pos) += 2;
 127       fprintf_filtered (stream, "$%s",
 128                internalvar_name (exp->elts[pc + 1].internalvar));
 129       return;
 130
 131     case OP_FUNCALL:
 132       (*pos) += 2;
 133       nargs = longest_to_int (exp->elts[pc + 1].longconst);
 134       print_subexp (exp, pos, stream, PREC_SUFFIX);
 135       fputs_filtered (" (", stream);
 136       for (tem = 0; tem < nargs; tem++)
 137         {
 138           if (tem != 0)
 139             fputs_filtered (", ", stream);
 140           print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
 141         }
 142       fputs_filtered (")", stream);
 143       return;
 144
 145     case OP_STRING:
 146       nargs = longest_to_int (exp -> elts[pc + 1].longconst);
 147       (*pos) += 3 + BYTES_TO_EXP_ELEM (nargs + 1);
 148       /* LA_PRINT_STRING will print using the current repeat count threshold.
 149          If necessary, we can temporarily set it to zero, or pass it as an
 150          additional parameter to LA_PRINT_STRING.  -fnf */
 151       LA_PRINT_STRING (stream, &exp->elts[pc + 2].string, nargs, 0);
 152       return;
 153
 154     case OP_BITSTRING:
 155       error ("support for OP_BITSTRING unimplemented");
 156       break;
 157
 158     case OP_ARRAY:
 159       (*pos) += 3;
 160       nargs = longest_to_int (exp->elts[pc + 2].longconst);
 161       nargs -= longest_to_int (exp->elts[pc + 1].longconst);
 162       nargs++;
 163       tem = 0;
 164       if (exp->elts[pc + 4].opcode == OP_LONG
 165           && exp->elts[pc + 5].type == builtin_type_char
 166           && exp->language_defn->la_language == language_c)
 167         {
 168           /* Attempt to print C character arrays using string syntax.
 169              Walk through the args, picking up one character from each
 170              of the OP_LONG expression elements.  If any array element
 171              does not match our expection of what we should find for
 172              a simple string, revert back to array printing.  Note that
 173              the last expression element is an explicit null terminator
 174              byte, which doesn't get printed. */
 175           tempstr = alloca (nargs);
 176           pc += 4;
 177           while (tem < nargs)
 178             {
 179               if (exp->elts[pc].opcode != OP_LONG
 180                   || exp->elts[pc + 1].type != builtin_type_char)
 181                 {
 182                   /* Not a simple array of char, use regular array printing. */
 183                   tem = 0;
 184                   break;
 185                 }
 186               else
 187                 {
 188                   tempstr[tem++] =
 189                     longest_to_int (exp->elts[pc + 2].longconst);
 190                   pc += 4;
 191                 }
 192             }
 193         }
 194       if (tem > 0)
 195         {
 196           LA_PRINT_STRING (stream, tempstr, nargs - 1, 0);
 197           (*pos) = pc;
 198         }
 199       else
 200         {
 201           fputs_filtered (" {", stream);
 202           for (tem = 0; tem < nargs; tem++)
 203             {
 204               if (tem != 0)
 205                 {
 206                   fputs_filtered (", ", stream);
 207                 }
 208               print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
 209             }
 210           fputs_filtered ("}", stream);
 211         }
 212       return;
 213
 214     case TERNOP_COND:
 215       if ((int) prec > (int) PREC_COMMA)
 216         fputs_filtered ("(", stream);
 217       /* Print the subexpressions, forcing parentheses
 218          around any binary operations within them.
 219          This is more parentheses than are strictly necessary,
 220          but it looks clearer.  */
 221       print_subexp (exp, pos, stream, PREC_HYPER);
 222       fputs_filtered (" ? ", stream);
 223       print_subexp (exp, pos, stream, PREC_HYPER);
 224       fputs_filtered (" : ", stream);
 225       print_subexp (exp, pos, stream, PREC_HYPER);
 226       if ((int) prec > (int) PREC_COMMA)
 227         fputs_filtered (")", stream);
 228       return;
 229
 230     case STRUCTOP_STRUCT:
 231       tem = longest_to_int (exp->elts[pc + 1].longconst);
 232       (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
 233       print_subexp (exp, pos, stream, PREC_SUFFIX);
 234       fputs_filtered (".", stream);
 235       fputs_filtered (&exp->elts[pc + 2].string, stream);
 236       return;
 237
 238     /* Will not occur for Modula-2 */
 239     case STRUCTOP_PTR:
 240       tem = longest_to_int (exp->elts[pc + 1].longconst);
 241       (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
 242       print_subexp (exp, pos, stream, PREC_SUFFIX);
 243       fputs_filtered ("->", stream);
 244       fputs_filtered (&exp->elts[pc + 2].string, stream);
 245       return;
 246
 247     case BINOP_SUBSCRIPT:
 248       print_subexp (exp, pos, stream, PREC_SUFFIX);
 249       fputs_filtered ("[", stream);
 250       print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
 251       fputs_filtered ("]", stream);
 252       return;
 253
 254     case UNOP_POSTINCREMENT:
 255       print_subexp (exp, pos, stream, PREC_SUFFIX);
 256       fputs_filtered ("++", stream);
 257       return;
 258
 259     case UNOP_POSTDECREMENT:
 260       print_subexp (exp, pos, stream, PREC_SUFFIX);
 261       fputs_filtered ("--", stream);
 262       return;
 263
 264     case UNOP_CAST:
 265       (*pos) += 2;
 266       if ((int) prec > (int) PREC_PREFIX)
 267         fputs_filtered ("(", stream);
 268       fputs_filtered ("(", stream);
 269       type_print (exp->elts[pc + 1].type, "", stream, 0);
 270       fputs_filtered (") ", stream);
 271       print_subexp (exp, pos, stream, PREC_PREFIX);
 272       if ((int) prec > (int) PREC_PREFIX)
 273         fputs_filtered (")", stream);
 274       return;
 275
 276     case UNOP_MEMVAL:
 277       (*pos) += 2;
 278       if ((int) prec > (int) PREC_PREFIX)
 279         fputs_filtered ("(", stream);
 280       if (exp->elts[pc + 1].type->code == TYPE_CODE_FUNC &&
 281           exp->elts[pc + 3].opcode == OP_LONG) {
 282         /* We have a minimal symbol fn, probably.  It's encoded
 283            as a UNOP_MEMVAL (function-type) of an OP_LONG (int, address).
 284            Swallow the OP_LONG (including both its opcodes); ignore
 285            its type; print the value in the type of the MEMVAL.  */
 286         (*pos) += 4;
 287         val = value_at_lazy (exp->elts[pc + 1].type,
 288                              (CORE_ADDR) exp->elts[pc + 5].longconst);
 289         value_print (val, stream, 0, Val_no_prettyprint);
 290       } else {
 291         fputs_filtered ("{", stream);
 292         type_print (exp->elts[pc + 1].type, "", stream, 0);
 293         fputs_filtered ("} ", stream);
 294         print_subexp (exp, pos, stream, PREC_PREFIX);
 295       }
 296       if ((int) prec > (int) PREC_PREFIX)
 297         fputs_filtered (")", stream);
 298       return;
 299
 300     case BINOP_ASSIGN_MODIFY:
 301       opcode = exp->elts[pc + 1].opcode;
 302       (*pos) += 2;
 303       myprec = PREC_ASSIGN;
 304       assoc = 1;
 305       assign_modify = 1;
 306       op_str = "???";
 307       for (tem = 0; op_print_tab[tem].opcode != OP_NULL; tem++)
 308         if (op_print_tab[tem].opcode == opcode)
 309           {
 310             op_str = op_print_tab[tem].string;
 311             break;
 312           }
 313       if (op_print_tab[tem].opcode != opcode)
 314         /* Not found; don't try to keep going because we don't know how
 315            to interpret further elements.  */
 316         error ("Invalid expression");
 317       break;
 318
 319     /* C++ ops */
 320
 321     case OP_THIS:
 322       ++(*pos);
 323       fputs_filtered ("this", stream);
 324       return;
 325
 326     /* Modula-2 ops */
 327
 328     case MULTI_SUBSCRIPT:
 329       (*pos) += 2;
 330       nargs = longest_to_int (exp->elts[pc + 1].longconst);
 331       print_subexp (exp, pos, stream, PREC_SUFFIX);
 332       fprintf (stream, " [");
 333       for (tem = 0; tem < nargs; tem++)
 334         {
 335           if (tem != 0)
 336             fprintf (stream, ", ");
 337           print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
 338         }
 339       fprintf (stream, "]");
 340       return;
 341
 342     case BINOP_VAL:
 343       (*pos)+=2;
 344       fprintf(stream,"VAL(");
 345       type_print(exp->elts[pc+1].type,"",stream,0);
 346       fprintf(stream,",");
 347       print_subexp(exp,pos,stream,PREC_PREFIX);
 348       fprintf(stream,")");
 349       return;
 350
 351     case UNOP_CAP:
 352       print_simple_m2_func("CAP",exp,pos,stream);
 353       return;
 354
 355     case UNOP_CHR:
 356       print_simple_m2_func("CHR",exp,pos,stream);
 357       return;
 358
 359     case UNOP_ORD:
 360       print_simple_m2_func("ORD",exp,pos,stream);
 361       return;
 362
 363     case UNOP_ABS:
 364       print_simple_m2_func("ABS",exp,pos,stream);
 365       return;
 366
 367     case UNOP_FLOAT:
 368       print_simple_m2_func("FLOAT",exp,pos,stream);
 369       return;
 370
 371     case UNOP_HIGH:
 372       print_simple_m2_func("HIGH",exp,pos,stream);
 373       return;
 374
 375     case UNOP_MAX:
 376       print_simple_m2_func("MAX",exp,pos,stream);
 377       return;
 378
 379     case UNOP_MIN:
 380       print_simple_m2_func("MIN",exp,pos,stream);
 381       return;
 382
 383     case UNOP_ODD:
 384       print_simple_m2_func("ODD",exp,pos,stream);
 385       return;
 386
 387     case UNOP_TRUNC:
 388       print_simple_m2_func("TRUNC",exp,pos,stream);
 389       return;
 390
 391     case BINOP_INCL:
 392     case BINOP_EXCL:
 393       error("print_subexp:  Not implemented.");
 394
 395     /* Default ops */
 396
 397     default:
 398       op_str = "???";
 399       for (tem = 0; op_print_tab[tem].opcode != OP_NULL; tem++)
 400         if (op_print_tab[tem].opcode == opcode)
 401           {
 402             op_str = op_print_tab[tem].string;
 403             myprec = op_print_tab[tem].precedence;
 404             assoc = op_print_tab[tem].right_assoc;
 405             break;
 406           }
 407       if (op_print_tab[tem].opcode != opcode)
 408         /* Not found; don't try to keep going because we don't know how
 409            to interpret further elements.  For example, this happens
 410            if opcode is OP_TYPE.  */
 411         error ("Invalid expression");
 412    }
 413
 414   if ((int) myprec < (int) prec)
 415     fputs_filtered ("(", stream);
 416   if ((int) opcode > (int) BINOP_END)
 417     {
 418       /* Unary prefix operator.  */
 419       fputs_filtered (op_str, stream);
 420       print_subexp (exp, pos, stream, PREC_PREFIX);
 421     }
 422   else
 423     {
 424       /* Binary operator.  */
 425       /* Print left operand.
 426          If operator is right-associative,
 427          increment precedence for this operand.  */
 428       print_subexp (exp, pos, stream,
 429                     (enum precedence) ((int) myprec + assoc));
 430       /* Print the operator itself.  */
 431       if (assign_modify)
 432         fprintf_filtered (stream, " %s= ", op_str);
 433       else if (op_str[0] == ',')
 434         fprintf_filtered (stream, "%s ", op_str);
 435       else
 436         fprintf_filtered (stream, " %s ", op_str);
 437       /* Print right operand.
 438          If operator is left-associative,
 439          increment precedence for this operand.  */
 440       print_subexp (exp, pos, stream,
 441                     (enum precedence) ((int) myprec + !assoc));
 442     }
 443
 444   if ((int) myprec < (int) prec)
 445     fputs_filtered (")", stream);
 446 }
 447
 448 /* Print out something of the form <s>(<arg>).
 449    This is used to print out some builtin Modula-2
 450    functions.
 451    FIXME:  There is probably some way to get the precedence
 452    rules to do this (print a unary operand with parens around it).  */
 453 static void
 454 print_simple_m2_func(s,exp,pos,stream)
 455    char *s;
 456    register struct expression *exp;
 457    register int *pos;
 458    FILE *stream;
 459 {
 460    fprintf(stream,"%s(",s);
 461    print_subexp(exp,pos,stream,PREC_PREFIX);
 462    fprintf(stream,")");
 463 }
 464
 465 /* Return the operator corresponding to opcode OP as
 466    a string.   NULL indicates that the opcode was not found in the
 467    current language table.  */
 468 char *
 469 op_string(op)
 470    enum exp_opcode op;
 471 {
 472   int tem;
 473   register const struct op_print *op_print_tab;
 474
 475   op_print_tab = current_language->la_op_print_tab;
 476   for (tem = 0; op_print_tab[tem].opcode != OP_NULL; tem++)
 477     if (op_print_tab[tem].opcode == op)
 478       return op_print_tab[tem].string;
 479   return NULL;
 480 }
 481
 482 #ifdef DEBUG_EXPRESSIONS
 483
 484 /* Support for dumping the raw data from expressions in a human readable
 485    form.  */
 486
 487 void
 488 dump_expression (exp, stream, note)
 489      struct expression *exp;
 490      FILE *stream;
 491      char *note;
 492 {
 493   int elt;
 494   char *opcode_name;
 495   char *eltscan;
 496   int eltsize;
 497
 498   fprintf_filtered (stream, "Dump of expression @ 0x%x, %s:\n", exp, note);
 499   fprintf_filtered (stream, "\tLanguage %s, %d elements, %d bytes each.\n",
 500                     exp->language_defn->la_name, exp -> nelts,
 501                     sizeof (union exp_element));
 502   fprintf_filtered (stream, "\t%5s  %20s  %16s  %s\n", "Index", "Opcode",
 503                     "Hex Value", "String Value");
 504   for (elt = 0; elt < exp -> nelts; elt++)
 505     {
 506       fprintf_filtered (stream, "\t%5d  ", elt);
 507       switch (exp -> elts[elt].opcode)
 508         {
 509           default: opcode_name = "<unknown>"; break;
 510           case OP_NULL: opcode_name = "OP_NULL"; break;
 511           case BINOP_ADD: opcode_name = "BINOP_ADD"; break;
 512           case BINOP_SUB: opcode_name = "BINOP_SUB"; break;
 513           case BINOP_MUL: opcode_name = "BINOP_MUL"; break;
 514           case BINOP_DIV: opcode_name = "BINOP_DIV"; break;
 515           case BINOP_REM: opcode_name = "BINOP_REM"; break;
 516           case BINOP_MOD: opcode_name = "BINOP_MOD"; break;
 517           case BINOP_LSH: opcode_name = "BINOP_LSH"; break;
 518           case BINOP_RSH: opcode_name = "BINOP_RSH"; break;
 519           case BINOP_LOGICAL_AND: opcode_name = "BINOP_LOGICAL_AND"; break;
 520           case BINOP_LOGICAL_OR: opcode_name = "BINOP_LOGICAL_OR"; break;
 521           case BINOP_BITWISE_AND: opcode_name = "BINOP_BITWISE_AND"; break;
 522           case BINOP_BITWISE_IOR: opcode_name = "BINOP_BITWISE_IOR"; break;
 523           case BINOP_BITWISE_XOR: opcode_name = "BINOP_BITWISE_XOR"; break;
 524           case BINOP_EQUAL: opcode_name = "BINOP_EQUAL"; break;
 525           case BINOP_NOTEQUAL: opcode_name = "BINOP_NOTEQUAL"; break;
 526           case BINOP_LESS: opcode_name = "BINOP_LESS"; break;
 527           case BINOP_GTR: opcode_name = "BINOP_GTR"; break;
 528           case BINOP_LEQ: opcode_name = "BINOP_LEQ"; break;
 529           case BINOP_GEQ: opcode_name = "BINOP_GEQ"; break;
 530           case BINOP_REPEAT: opcode_name = "BINOP_REPEAT"; break;
 531           case BINOP_ASSIGN: opcode_name = "BINOP_ASSIGN"; break;
 532           case BINOP_COMMA: opcode_name = "BINOP_COMMA"; break;
 533           case BINOP_SUBSCRIPT: opcode_name = "BINOP_SUBSCRIPT"; break;
 534           case MULTI_SUBSCRIPT: opcode_name = "MULTI_SUBSCRIPT"; break;
 535           case BINOP_EXP: opcode_name = "BINOP_EXP"; break;
 536           case BINOP_MIN: opcode_name = "BINOP_MIN"; break;
 537           case BINOP_MAX: opcode_name = "BINOP_MAX"; break;
 538           case BINOP_SCOPE: opcode_name = "BINOP_SCOPE"; break;
 539           case STRUCTOP_MEMBER: opcode_name = "STRUCTOP_MEMBER"; break;
 540           case STRUCTOP_MPTR: opcode_name = "STRUCTOP_MPTR"; break;
 541           case BINOP_INTDIV: opcode_name = "BINOP_INTDIV"; break;
 542           case BINOP_ASSIGN_MODIFY: opcode_name = "BINOP_ASSIGN_MODIFY"; break;
 543           case BINOP_VAL: opcode_name = "BINOP_VAL"; break;
 544           case BINOP_INCL: opcode_name = "BINOP_INCL"; break;
 545           case BINOP_EXCL: opcode_name = "BINOP_EXCL"; break;
 546           case BINOP_CONCAT: opcode_name = "BINOP_CONCAT"; break;
 547           case BINOP_END: opcode_name = "BINOP_END"; break;
 548           case TERNOP_COND: opcode_name = "TERNOP_COND"; break;
 549           case OP_LONG: opcode_name = "OP_LONG"; break;
 550           case OP_DOUBLE: opcode_name = "OP_DOUBLE"; break;
 551           case OP_VAR_VALUE: opcode_name = "OP_VAR_VALUE"; break;
 552           case OP_LAST: opcode_name = "OP_LAST"; break;
 553           case OP_REGISTER: opcode_name = "OP_REGISTER"; break;
 554           case OP_INTERNALVAR: opcode_name = "OP_INTERNALVAR"; break;
 555           case OP_FUNCALL: opcode_name = "OP_FUNCALL"; break;
 556           case OP_STRING: opcode_name = "OP_STRING"; break;
 557           case OP_BITSTRING: opcode_name = "OP_BITSTRING"; break;
 558           case OP_ARRAY: opcode_name = "OP_ARRAY"; break;
 559           case UNOP_CAST: opcode_name = "UNOP_CAST"; break;
 560           case UNOP_MEMVAL: opcode_name = "UNOP_MEMVAL"; break;
 561           case UNOP_NEG: opcode_name = "UNOP_NEG"; break;
 562           case UNOP_LOGICAL_NOT: opcode_name = "UNOP_LOGICAL_NOT"; break;
 563           case UNOP_COMPLEMENT: opcode_name = "UNOP_COMPLEMENT"; break;
 564           case UNOP_IND: opcode_name = "UNOP_IND"; break;
 565           case UNOP_ADDR: opcode_name = "UNOP_ADDR"; break;
 566           case UNOP_PREINCREMENT: opcode_name = "UNOP_PREINCREMENT"; break;
 567           case UNOP_POSTINCREMENT: opcode_name = "UNOP_POSTINCREMENT"; break;
 568           case UNOP_PREDECREMENT: opcode_name = "UNOP_PREDECREMENT"; break;
 569           case UNOP_POSTDECREMENT: opcode_name = "UNOP_POSTDECREMENT"; break;
 570           case UNOP_SIZEOF: opcode_name = "UNOP_SIZEOF"; break;
 571           case UNOP_PLUS: opcode_name = "UNOP_PLUS"; break;
 572           case UNOP_CAP: opcode_name = "UNOP_CAP"; break;
 573           case UNOP_CHR: opcode_name = "UNOP_CHR"; break;
 574           case UNOP_ORD: opcode_name = "UNOP_ORD"; break;
 575           case UNOP_ABS: opcode_name = "UNOP_ABS"; break;
 576           case UNOP_FLOAT: opcode_name = "UNOP_FLOAT"; break;
 577           case UNOP_HIGH: opcode_name = "UNOP_HIGH"; break;
 578           case UNOP_MAX: opcode_name = "UNOP_MAX"; break;
 579           case UNOP_MIN: opcode_name = "UNOP_MIN"; break;
 580           case UNOP_ODD: opcode_name = "UNOP_ODD"; break;
 581           case UNOP_TRUNC: opcode_name = "UNOP_TRUNC"; break;
 582           case OP_BOOL: opcode_name = "OP_BOOL"; break;
 583           case OP_M2_STRING: opcode_name = "OP_M2_STRING"; break;
 584           case STRUCTOP_STRUCT: opcode_name = "STRUCTOP_STRUCT"; break;
 585           case STRUCTOP_PTR: opcode_name = "STRUCTOP_PTR"; break;
 586           case OP_THIS: opcode_name = "OP_THIS"; break;
 587           case OP_SCOPE: opcode_name = "OP_SCOPE"; break;
 588           case OP_TYPE: opcode_name = "OP_TYPE"; break;
 589         }
 590       fprintf_filtered (stream, "%20s  ", opcode_name);
 591       fprintf_filtered (stream,
 592 #if defined (LONG_LONG)
 593                         "%ll16x  ",
 594 #else
 595                         "%l16x  ",
 596 #endif
 597                         exp -> elts[elt].longconst);
 598
 599       for (eltscan = (char *) &exp->elts[elt],
 600              eltsize = sizeof (union exp_element) ;
 601            eltsize-- > 0;
 602            eltscan++)
 603         {
 604           fprintf_filtered (stream, "%c",
 605                             isprint (*eltscan) ? (*eltscan & 0xFF) : '.');
 606         }
 607       fprintf_filtered (stream, "\n");
 608     }
 609 }
 610
 611 #endif  /* DEBUG_EXPRESSIONS */