gdb/f-lang.c

   1 /* Fortran language support routines for GDB, the GNU debugger.
   2
   3    Copyright (C) 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003,
   4    2004, 2005, 2007 Free Software Foundation, Inc.
   5
   6    Contributed by Motorola.  Adapted from the C parser by Farooq Butt
   7    (fmbutt@engage.sps.mot.com).
   8
   9    This file is part of GDB.
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 3 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  23
  24 #include "defs.h"
  25 #include "gdb_string.h"
  26 #include "symtab.h"
  27 #include "gdbtypes.h"
  28 #include "expression.h"
  29 #include "parser-defs.h"
  30 #include "language.h"
  31 #include "f-lang.h"
  32 #include "valprint.h"
  33 #include "value.h"
  34
  35
  36 /* Following is dubious stuff that had been in the xcoff reader. */
  37
  38 struct saved_fcn
  39   {
  40     long line_offset;           /* Line offset for function */
  41     struct saved_fcn *next;
  42   };
  43
  44
  45 struct saved_bf_symnum
  46   {
  47     long symnum_fcn;            /* Symnum of function (i.e. .function directive) */
  48     long symnum_bf;             /* Symnum of .bf for this function */
  49     struct saved_bf_symnum *next;
  50   };
  51
  52 typedef struct saved_fcn SAVED_FUNCTION, *SAVED_FUNCTION_PTR;
  53 typedef struct saved_bf_symnum SAVED_BF, *SAVED_BF_PTR;
  54
  55 /* Local functions */
  56
  57 extern void _initialize_f_language (void);
  58 #if 0
  59 static void clear_function_list (void);
  60 static long get_bf_for_fcn (long);
  61 static void clear_bf_list (void);
  62 static void patch_all_commons_by_name (char *, CORE_ADDR, int);
  63 static SAVED_F77_COMMON_PTR find_first_common_named (char *);
  64 static void add_common_entry (struct symbol *);
  65 static void add_common_block (char *, CORE_ADDR, int, char *);
  66 static SAVED_FUNCTION *allocate_saved_function_node (void);
  67 static SAVED_BF_PTR allocate_saved_bf_node (void);
  68 static COMMON_ENTRY_PTR allocate_common_entry_node (void);
  69 static SAVED_F77_COMMON_PTR allocate_saved_f77_common_node (void);
  70 static void patch_common_entries (SAVED_F77_COMMON_PTR, CORE_ADDR, int);
  71 #endif
  72
  73 static struct type *f_create_fundamental_type (struct objfile *, int);
  74 static void f_printchar (int c, struct ui_file * stream);
  75 static void f_emit_char (int c, struct ui_file * stream, int quoter);
  76
  77 /* Print the character C on STREAM as part of the contents of a literal
  78    string whose delimiter is QUOTER.  Note that that format for printing
  79    characters and strings is language specific.
  80    FIXME:  This is a copy of the same function from c-exp.y.  It should
  81    be replaced with a true F77 version.  */
  82
  83 static void
  84 f_emit_char (int c, struct ui_file *stream, int quoter)
  85 {
  86   c &= 0xFF;                    /* Avoid sign bit follies */
  87
  88   if (PRINT_LITERAL_FORM (c))
  89     {
  90       if (c == '\\' || c == quoter)
  91         fputs_filtered ("\\", stream);
  92       fprintf_filtered (stream, "%c", c);
  93     }
  94   else
  95     {
  96       switch (c)
  97         {
  98         case '\n':
  99           fputs_filtered ("\\n", stream);
 100           break;
 101         case '\b':
 102           fputs_filtered ("\\b", stream);
 103           break;
 104         case '\t':
 105           fputs_filtered ("\\t", stream);
 106           break;
 107         case '\f':
 108           fputs_filtered ("\\f", stream);
 109           break;
 110         case '\r':
 111           fputs_filtered ("\\r", stream);
 112           break;
 113         case '\033':
 114           fputs_filtered ("\\e", stream);
 115           break;
 116         case '\007':
 117           fputs_filtered ("\\a", stream);
 118           break;
 119         default:
 120           fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
 121           break;
 122         }
 123     }
 124 }
 125
 126 /* FIXME:  This is a copy of the same function from c-exp.y.  It should
 127    be replaced with a true F77version. */
 128
 129 static void
 130 f_printchar (int c, struct ui_file *stream)
 131 {
 132   fputs_filtered ("'", stream);
 133   LA_EMIT_CHAR (c, stream, '\'');
 134   fputs_filtered ("'", stream);
 135 }
 136
 137 /* Print the character string STRING, printing at most LENGTH characters.
 138    Printing stops early if the number hits print_max; repeat counts
 139    are printed as appropriate.  Print ellipses at the end if we
 140    had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
 141    FIXME:  This is a copy of the same function from c-exp.y.  It should
 142    be replaced with a true F77 version. */
 143
 144 static void
 145 f_printstr (struct ui_file *stream, const gdb_byte *string,
 146             unsigned int length, int width, int force_ellipses)
 147 {
 148   unsigned int i;
 149   unsigned int things_printed = 0;
 150   int in_quotes = 0;
 151   int need_comma = 0;
 152
 153   if (length == 0)
 154     {
 155       fputs_filtered ("''", gdb_stdout);
 156       return;
 157     }
 158
 159   for (i = 0; i < length && things_printed < print_max; ++i)
 160     {
 161       /* Position of the character we are examining
 162          to see whether it is repeated.  */
 163       unsigned int rep1;
 164       /* Number of repetitions we have detected so far.  */
 165       unsigned int reps;
 166
 167       QUIT;
 168
 169       if (need_comma)
 170         {
 171           fputs_filtered (", ", stream);
 172           need_comma = 0;
 173         }
 174
 175       rep1 = i + 1;
 176       reps = 1;
 177       while (rep1 < length && string[rep1] == string[i])
 178         {
 179           ++rep1;
 180           ++reps;
 181         }
 182
 183       if (reps > repeat_count_threshold)
 184         {
 185           if (in_quotes)
 186             {
 187               if (inspect_it)
 188                 fputs_filtered ("\\', ", stream);
 189               else
 190                 fputs_filtered ("', ", stream);
 191               in_quotes = 0;
 192             }
 193           f_printchar (string[i], stream);
 194           fprintf_filtered (stream, " <repeats %u times>", reps);
 195           i = rep1 - 1;
 196           things_printed += repeat_count_threshold;
 197           need_comma = 1;
 198         }
 199       else
 200         {
 201           if (!in_quotes)
 202             {
 203               if (inspect_it)
 204                 fputs_filtered ("\\'", stream);
 205               else
 206                 fputs_filtered ("'", stream);
 207               in_quotes = 1;
 208             }
 209           LA_EMIT_CHAR (string[i], stream, '"');
 210           ++things_printed;
 211         }
 212     }
 213
 214   /* Terminate the quotes if necessary.  */
 215   if (in_quotes)
 216     {
 217       if (inspect_it)
 218         fputs_filtered ("\\'", stream);
 219       else
 220         fputs_filtered ("'", stream);
 221     }
 222
 223   if (force_ellipses || i < length)
 224     fputs_filtered ("...", stream);
 225 }
 226
 227 /* FIXME:  This is a copy of c_create_fundamental_type(), before
 228    all the non-C types were stripped from it.  Needs to be fixed
 229    by an experienced F77 programmer. */
 230
 231 static struct type *
 232 f_create_fundamental_type (struct objfile *objfile, int typeid)
 233 {
 234   struct type *type = NULL;
 235
 236   switch (typeid)
 237     {
 238     case FT_VOID:
 239       type = init_type (TYPE_CODE_VOID,
 240                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 241                         0, "VOID", objfile);
 242       break;
 243     case FT_BOOLEAN:
 244       type = init_type (TYPE_CODE_BOOL,
 245                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 246                         TYPE_FLAG_UNSIGNED, "boolean", objfile);
 247       break;
 248     case FT_STRING:
 249       type = init_type (TYPE_CODE_STRING,
 250                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 251                         0, "string", objfile);
 252       break;
 253     case FT_CHAR:
 254       type = init_type (TYPE_CODE_INT,
 255                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 256                         0, "character", objfile);
 257       break;
 258     case FT_SIGNED_CHAR:
 259       type = init_type (TYPE_CODE_INT,
 260                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 261                         0, "integer*1", objfile);
 262       break;
 263     case FT_UNSIGNED_CHAR:
 264       type = init_type (TYPE_CODE_BOOL,
 265                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 266                         TYPE_FLAG_UNSIGNED, "logical*1", objfile);
 267       break;
 268     case FT_SHORT:
 269       type = init_type (TYPE_CODE_INT,
 270                         gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
 271                         0, "integer*2", objfile);
 272       break;
 273     case FT_SIGNED_SHORT:
 274       type = init_type (TYPE_CODE_INT,
 275                         gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
 276                         0, "short", objfile);   /* FIXME-fnf */
 277       break;
 278     case FT_UNSIGNED_SHORT:
 279       type = init_type (TYPE_CODE_BOOL,
 280                         gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
 281                         TYPE_FLAG_UNSIGNED, "logical*2", objfile);
 282       break;
 283     case FT_INTEGER:
 284       type = init_type (TYPE_CODE_INT,
 285                         gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
 286                         0, "integer*4", objfile);
 287       break;
 288     case FT_SIGNED_INTEGER:
 289       type = init_type (TYPE_CODE_INT,
 290                         gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
 291                         0, "integer", objfile);         /* FIXME -fnf */
 292       break;
 293     case FT_UNSIGNED_INTEGER:
 294       type = init_type (TYPE_CODE_BOOL,
 295                         gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
 296                         TYPE_FLAG_UNSIGNED, "logical*4", objfile);
 297       break;
 298     case FT_FIXED_DECIMAL:
 299       type = init_type (TYPE_CODE_INT,
 300                         gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
 301                         0, "fixed decimal", objfile);
 302       break;
 303     case FT_LONG:
 304       type = init_type (TYPE_CODE_INT,
 305                         gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
 306                         0, "long", objfile);
 307       break;
 308     case FT_SIGNED_LONG:
 309       type = init_type (TYPE_CODE_INT,
 310                         gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
 311                         0, "long", objfile);    /* FIXME -fnf */
 312       break;
 313     case FT_UNSIGNED_LONG:
 314       type = init_type (TYPE_CODE_INT,
 315                         gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
 316                         TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
 317       break;
 318     case FT_LONG_LONG:
 319       type = init_type (TYPE_CODE_INT,
 320                         gdbarch_long_long_bit (current_gdbarch)
 321                          / TARGET_CHAR_BIT,
 322                         0, "long long", objfile);
 323       break;
 324     case FT_SIGNED_LONG_LONG:
 325       type = init_type (TYPE_CODE_INT,
 326                         gdbarch_long_long_bit (current_gdbarch)
 327                          / TARGET_CHAR_BIT,
 328                         0, "signed long long", objfile);
 329       break;
 330     case FT_UNSIGNED_LONG_LONG:
 331       type = init_type (TYPE_CODE_INT,
 332                         gdbarch_long_long_bit (current_gdbarch)
 333                          / TARGET_CHAR_BIT,
 334                         TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
 335       break;
 336     case FT_FLOAT:
 337       type = init_type (TYPE_CODE_FLT,
 338                         gdbarch_float_bit (current_gdbarch) / TARGET_CHAR_BIT,
 339                         0, "real", objfile);
 340       break;
 341     case FT_DBL_PREC_FLOAT:
 342       type = init_type (TYPE_CODE_FLT,
 343                         gdbarch_double_bit (current_gdbarch) / TARGET_CHAR_BIT,
 344                         0, "real*8", objfile);
 345       break;
 346     case FT_FLOAT_DECIMAL:
 347       type = init_type (TYPE_CODE_FLT,
 348                         gdbarch_double_bit (current_gdbarch) / TARGET_CHAR_BIT,
 349                         0, "floating decimal", objfile);
 350       break;
 351     case FT_EXT_PREC_FLOAT:
 352       type = init_type (TYPE_CODE_FLT,
 353                         gdbarch_long_double_bit (current_gdbarch)
 354                           / TARGET_CHAR_BIT,
 355                         0, "real*16", objfile);
 356       break;
 357     case FT_COMPLEX:
 358       type = init_type (TYPE_CODE_COMPLEX,
 359                         2 * gdbarch_float_bit (current_gdbarch) / TARGET_CHAR_BIT,
 360                         0, "complex*8", objfile);
 361       TYPE_TARGET_TYPE (type) = builtin_type_f_real;
 362       break;
 363     case FT_DBL_PREC_COMPLEX:
 364       type = init_type (TYPE_CODE_COMPLEX,
 365                         2 * gdbarch_double_bit (current_gdbarch)
 366                           / TARGET_CHAR_BIT,
 367                         0, "complex*16", objfile);
 368       TYPE_TARGET_TYPE (type) = builtin_type_f_real_s8;
 369       break;
 370     case FT_EXT_PREC_COMPLEX:
 371       type = init_type (TYPE_CODE_COMPLEX,
 372                         2 * gdbarch_long_double_bit (current_gdbarch)
 373                           / TARGET_CHAR_BIT,
 374                         0, "complex*32", objfile);
 375       TYPE_TARGET_TYPE (type) = builtin_type_f_real_s16;
 376       break;
 377     default:
 378       /* FIXME:  For now, if we are asked to produce a type not in this
 379          language, create the equivalent of a C integer type with the
 380          name "<?type?>".  When all the dust settles from the type
 381          reconstruction work, this should probably become an error. */
 382       type = init_type (TYPE_CODE_INT,
 383                         gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
 384                         0, "<?type?>", objfile);
 385       warning (_("internal error: no F77 fundamental type %d"), typeid);
 386       break;
 387     }
 388   return (type);
 389 }
 390 \f
 391
 392 /* Table of operators and their precedences for printing expressions.  */
 393
 394 static const struct op_print f_op_print_tab[] =
 395 {
 396   {"+", BINOP_ADD, PREC_ADD, 0},
 397   {"+", UNOP_PLUS, PREC_PREFIX, 0},
 398   {"-", BINOP_SUB, PREC_ADD, 0},
 399   {"-", UNOP_NEG, PREC_PREFIX, 0},
 400   {"*", BINOP_MUL, PREC_MUL, 0},
 401   {"/", BINOP_DIV, PREC_MUL, 0},
 402   {"DIV", BINOP_INTDIV, PREC_MUL, 0},
 403   {"MOD", BINOP_REM, PREC_MUL, 0},
 404   {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
 405   {".OR.", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
 406   {".AND.", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
 407   {".NOT.", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
 408   {".EQ.", BINOP_EQUAL, PREC_EQUAL, 0},
 409   {".NE.", BINOP_NOTEQUAL, PREC_EQUAL, 0},
 410   {".LE.", BINOP_LEQ, PREC_ORDER, 0},
 411   {".GE.", BINOP_GEQ, PREC_ORDER, 0},
 412   {".GT.", BINOP_GTR, PREC_ORDER, 0},
 413   {".LT.", BINOP_LESS, PREC_ORDER, 0},
 414   {"**", UNOP_IND, PREC_PREFIX, 0},
 415   {"@", BINOP_REPEAT, PREC_REPEAT, 0},
 416   {NULL, 0, 0, 0}
 417 };
 418 \f
 419 enum f_primitive_types {
 420   f_primitive_type_character,
 421   f_primitive_type_logical,
 422   f_primitive_type_logical_s1,
 423   f_primitive_type_logical_s2,
 424   f_primitive_type_integer,
 425   f_primitive_type_integer_s2,
 426   f_primitive_type_real,
 427   f_primitive_type_real_s8,
 428   f_primitive_type_real_s16,
 429   f_primitive_type_complex_s8,
 430   f_primitive_type_complex_s16,
 431   f_primitive_type_void,
 432   nr_f_primitive_types
 433 };
 434
 435 static void
 436 f_language_arch_info (struct gdbarch *gdbarch,
 437                       struct language_arch_info *lai)
 438 {
 439   const struct builtin_f_type *builtin = builtin_f_type (gdbarch);
 440
 441   lai->string_char_type = builtin->builtin_character;
 442   lai->primitive_type_vector
 443     = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_f_primitive_types + 1,
 444                               struct type *);
 445
 446   lai->primitive_type_vector [f_primitive_type_character]
 447     = builtin->builtin_character;
 448   lai->primitive_type_vector [f_primitive_type_logical]
 449     = builtin->builtin_logical;
 450   lai->primitive_type_vector [f_primitive_type_logical_s1]
 451     = builtin->builtin_logical_s1;
 452   lai->primitive_type_vector [f_primitive_type_logical_s2]
 453     = builtin->builtin_logical_s2;
 454   lai->primitive_type_vector [f_primitive_type_real]
 455     = builtin->builtin_real;
 456   lai->primitive_type_vector [f_primitive_type_real_s8]
 457     = builtin->builtin_real_s8;
 458   lai->primitive_type_vector [f_primitive_type_real_s16]
 459     = builtin->builtin_real_s16;
 460   lai->primitive_type_vector [f_primitive_type_complex_s8]
 461     = builtin->builtin_complex_s8;
 462   lai->primitive_type_vector [f_primitive_type_complex_s16]
 463     = builtin->builtin_complex_s16;
 464   lai->primitive_type_vector [f_primitive_type_void]
 465     = builtin->builtin_void;
 466 }
 467
 468 /* This is declared in c-lang.h but it is silly to import that file for what
 469    is already just a hack. */
 470 extern int c_value_print (struct value *, struct ui_file *, int,
 471                           enum val_prettyprint);
 472
 473 const struct language_defn f_language_defn =
 474 {
 475   "fortran",
 476   language_fortran,
 477   NULL,
 478   range_check_on,
 479   type_check_on,
 480   case_sensitive_off,
 481   array_column_major,
 482   &exp_descriptor_standard,
 483   f_parse,                      /* parser */
 484   f_error,                      /* parser error function */
 485   null_post_parser,
 486   f_printchar,                  /* Print character constant */
 487   f_printstr,                   /* function to print string constant */
 488   f_emit_char,                  /* Function to print a single character */
 489   f_create_fundamental_type,    /* Create fundamental type in this language */
 490   f_print_type,                 /* Print a type using appropriate syntax */
 491   f_val_print,                  /* Print a value using appropriate syntax */
 492   c_value_print,                /* FIXME */
 493   NULL,                         /* Language specific skip_trampoline */
 494   value_of_this,                /* value_of_this */
 495   basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
 496   basic_lookup_transparent_type,/* lookup_transparent_type */
 497   NULL,                         /* Language specific symbol demangler */
 498   NULL,                         /* Language specific class_name_from_physname */
 499   f_op_print_tab,               /* expression operators for printing */
 500   0,                            /* arrays are first-class (not c-style) */
 501   1,                            /* String lower bound */
 502   NULL,
 503   default_word_break_characters,
 504   f_language_arch_info,
 505   default_print_array_index,
 506   LANG_MAGIC
 507 };
 508
 509 static void *
 510 build_fortran_types (struct gdbarch *gdbarch)
 511 {
 512   struct builtin_f_type *builtin_f_type
 513     = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_f_type);
 514
 515   builtin_f_type->builtin_void =
 516     init_type (TYPE_CODE_VOID, 1,
 517                0,
 518                "VOID", (struct objfile *) NULL);
 519
 520   builtin_f_type->builtin_character =
 521     init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 522                0,
 523                "character", (struct objfile *) NULL);
 524
 525   builtin_f_type->builtin_logical_s1 =
 526     init_type (TYPE_CODE_BOOL, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 527                TYPE_FLAG_UNSIGNED,
 528                "logical*1", (struct objfile *) NULL);
 529
 530   builtin_f_type->builtin_integer_s2 =
 531     init_type (TYPE_CODE_INT,
 532                gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
 533                0, "integer*2", (struct objfile *) NULL);
 534
 535   builtin_f_type->builtin_logical_s2 =
 536     init_type (TYPE_CODE_BOOL,
 537                gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
 538                TYPE_FLAG_UNSIGNED, "logical*2", (struct objfile *) NULL);
 539
 540   builtin_f_type->builtin_integer =
 541     init_type (TYPE_CODE_INT,
 542                gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
 543                0, "integer", (struct objfile *) NULL);
 544
 545   builtin_f_type->builtin_logical =
 546     init_type (TYPE_CODE_BOOL,
 547                gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
 548                TYPE_FLAG_UNSIGNED, "logical*4", (struct objfile *) NULL);
 549
 550   builtin_f_type->builtin_real =
 551     init_type (TYPE_CODE_FLT,
 552                gdbarch_float_bit (current_gdbarch) / TARGET_CHAR_BIT,
 553                0,
 554                "real", (struct objfile *) NULL);
 555
 556   builtin_f_type->builtin_real_s8 =
 557     init_type (TYPE_CODE_FLT,
 558                gdbarch_double_bit (current_gdbarch) / TARGET_CHAR_BIT,
 559                0,
 560                "real*8", (struct objfile *) NULL);
 561
 562   builtin_f_type->builtin_real_s16 =
 563     init_type (TYPE_CODE_FLT,
 564                gdbarch_long_double_bit (current_gdbarch) / TARGET_CHAR_BIT,
 565                0,
 566                "real*16", (struct objfile *) NULL);
 567
 568   builtin_f_type->builtin_complex_s8 =
 569     init_type (TYPE_CODE_COMPLEX,
 570                2 * gdbarch_float_bit (current_gdbarch) / TARGET_CHAR_BIT,
 571                0,
 572                "complex*8", (struct objfile *) NULL);
 573   TYPE_TARGET_TYPE (builtin_f_type->builtin_complex_s8)
 574     = builtin_f_type->builtin_real;
 575
 576   builtin_f_type->builtin_complex_s16 =
 577     init_type (TYPE_CODE_COMPLEX,
 578                2 * gdbarch_double_bit (current_gdbarch) / TARGET_CHAR_BIT,
 579                0,
 580                "complex*16", (struct objfile *) NULL);
 581   TYPE_TARGET_TYPE (builtin_f_type->builtin_complex_s16)
 582     = builtin_f_type->builtin_real_s8;
 583
 584   /* We have a new size == 4 double floats for the
 585      complex*32 data type */
 586
 587   builtin_f_type->builtin_complex_s32 =
 588     init_type (TYPE_CODE_COMPLEX,
 589                2 * gdbarch_long_double_bit (current_gdbarch) / TARGET_CHAR_BIT,
 590                0,
 591                "complex*32", (struct objfile *) NULL);
 592   TYPE_TARGET_TYPE (builtin_f_type->builtin_complex_s32)
 593     = builtin_f_type->builtin_real_s16;
 594
 595   return builtin_f_type;
 596 }
 597
 598 static struct gdbarch_data *f_type_data;
 599
 600 const struct builtin_f_type *
 601 builtin_f_type (struct gdbarch *gdbarch)
 602 {
 603   return gdbarch_data (gdbarch, f_type_data);
 604 }
 605
 606 void
 607 _initialize_f_language (void)
 608 {
 609   f_type_data = gdbarch_data_register_post_init (build_fortran_types);
 610
 611   add_language (&f_language_defn);
 612 }
 613
 614 #if 0
 615 static SAVED_BF_PTR
 616 allocate_saved_bf_node (void)
 617 {
 618   SAVED_BF_PTR new;
 619
 620   new = (SAVED_BF_PTR) xmalloc (sizeof (SAVED_BF));
 621   return (new);
 622 }
 623
 624 static SAVED_FUNCTION *
 625 allocate_saved_function_node (void)
 626 {
 627   SAVED_FUNCTION *new;
 628
 629   new = (SAVED_FUNCTION *) xmalloc (sizeof (SAVED_FUNCTION));
 630   return (new);
 631 }
 632
 633 static SAVED_F77_COMMON_PTR
 634 allocate_saved_f77_common_node (void)
 635 {
 636   SAVED_F77_COMMON_PTR new;
 637
 638   new = (SAVED_F77_COMMON_PTR) xmalloc (sizeof (SAVED_F77_COMMON));
 639   return (new);
 640 }
 641
 642 static COMMON_ENTRY_PTR
 643 allocate_common_entry_node (void)
 644 {
 645   COMMON_ENTRY_PTR new;
 646
 647   new = (COMMON_ENTRY_PTR) xmalloc (sizeof (COMMON_ENTRY));
 648   return (new);
 649 }
 650 #endif
 651
 652 SAVED_F77_COMMON_PTR head_common_list = NULL;   /* Ptr to 1st saved COMMON  */
 653 SAVED_F77_COMMON_PTR tail_common_list = NULL;   /* Ptr to last saved COMMON  */
 654 SAVED_F77_COMMON_PTR current_common = NULL;     /* Ptr to current COMMON */
 655
 656 #if 0
 657 static SAVED_BF_PTR saved_bf_list = NULL;       /* Ptr to (.bf,function)
 658                                                    list */
 659 static SAVED_BF_PTR saved_bf_list_end = NULL;   /* Ptr to above list's end */
 660 static SAVED_BF_PTR current_head_bf_list = NULL;        /* Current head of above list
 661                                                          */
 662
 663 static SAVED_BF_PTR tmp_bf_ptr; /* Generic temporary for use
 664                                    in macros */
 665
 666 /* The following function simply enters a given common block onto
 667    the global common block chain */
 668
 669 static void
 670 add_common_block (char *name, CORE_ADDR offset, int secnum, char *func_stab)
 671 {
 672   SAVED_F77_COMMON_PTR tmp;
 673   char *c, *local_copy_func_stab;
 674
 675   /* If the COMMON block we are trying to add has a blank
 676      name (i.e. "#BLNK_COM") then we set it to __BLANK
 677      because the darn "#" character makes GDB's input
 678      parser have fits. */
 679
 680
 681   if (strcmp (name, BLANK_COMMON_NAME_ORIGINAL) == 0
 682       || strcmp (name, BLANK_COMMON_NAME_MF77) == 0)
 683     {
 684
 685       xfree (name);
 686       name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
 687       strcpy (name, BLANK_COMMON_NAME_LOCAL);
 688     }
 689
 690   tmp = allocate_saved_f77_common_node ();
 691
 692   local_copy_func_stab = xmalloc (strlen (func_stab) + 1);
 693   strcpy (local_copy_func_stab, func_stab);
 694
 695   tmp->name = xmalloc (strlen (name) + 1);
 696
 697   /* local_copy_func_stab is a stabstring, let us first extract the
 698      function name from the stab by NULLing out the ':' character. */
 699
 700
 701   c = NULL;
 702   c = strchr (local_copy_func_stab, ':');
 703
 704   if (c)
 705     *c = '\0';
 706   else
 707     error (_("Malformed function STAB found in add_common_block()"));
 708
 709
 710   tmp->owning_function = xmalloc (strlen (local_copy_func_stab) + 1);
 711
 712   strcpy (tmp->owning_function, local_copy_func_stab);
 713
 714   strcpy (tmp->name, name);
 715   tmp->offset = offset;
 716   tmp->next = NULL;
 717   tmp->entries = NULL;
 718   tmp->secnum = secnum;
 719
 720   current_common = tmp;
 721
 722   if (head_common_list == NULL)
 723     {
 724       head_common_list = tail_common_list = tmp;
 725     }
 726   else
 727     {
 728       tail_common_list->next = tmp;
 729       tail_common_list = tmp;
 730     }
 731 }
 732 #endif
 733
 734 /* The following function simply enters a given common entry onto
 735    the "current_common" block that has been saved away. */
 736
 737 #if 0
 738 static void
 739 add_common_entry (struct symbol *entry_sym_ptr)
 740 {
 741   COMMON_ENTRY_PTR tmp;
 742
 743
 744
 745   /* The order of this list is important, since
 746      we expect the entries to appear in decl.
 747      order when we later issue "info common" calls */
 748
 749   tmp = allocate_common_entry_node ();
 750
 751   tmp->next = NULL;
 752   tmp->symbol = entry_sym_ptr;
 753
 754   if (current_common == NULL)
 755     error (_("Attempt to add COMMON entry with no block open!"));
 756   else
 757     {
 758       if (current_common->entries == NULL)
 759         {
 760           current_common->entries = tmp;
 761           current_common->end_of_entries = tmp;
 762         }
 763       else
 764         {
 765           current_common->end_of_entries->next = tmp;
 766           current_common->end_of_entries = tmp;
 767         }
 768     }
 769 }
 770 #endif
 771
 772 /* This routine finds the first encountred COMMON block named "name" */
 773
 774 #if 0
 775 static SAVED_F77_COMMON_PTR
 776 find_first_common_named (char *name)
 777 {
 778
 779   SAVED_F77_COMMON_PTR tmp;
 780
 781   tmp = head_common_list;
 782
 783   while (tmp != NULL)
 784     {
 785       if (strcmp (tmp->name, name) == 0)
 786         return (tmp);
 787       else
 788         tmp = tmp->next;
 789     }
 790   return (NULL);
 791 }
 792 #endif
 793
 794 /* This routine finds the first encountred COMMON block named "name"
 795    that belongs to function funcname */
 796
 797 SAVED_F77_COMMON_PTR
 798 find_common_for_function (char *name, char *funcname)
 799 {
 800
 801   SAVED_F77_COMMON_PTR tmp;
 802
 803   tmp = head_common_list;
 804
 805   while (tmp != NULL)
 806     {
 807       if (DEPRECATED_STREQ (tmp->name, name)
 808           && DEPRECATED_STREQ (tmp->owning_function, funcname))
 809         return (tmp);
 810       else
 811         tmp = tmp->next;
 812     }
 813   return (NULL);
 814 }
 815
 816
 817 #if 0
 818
 819 /* The following function is called to patch up the offsets
 820    for the statics contained in the COMMON block named
 821    "name."  */
 822
 823 static void
 824 patch_common_entries (SAVED_F77_COMMON_PTR blk, CORE_ADDR offset, int secnum)
 825 {
 826   COMMON_ENTRY_PTR entry;
 827
 828   blk->offset = offset;         /* Keep this around for future use. */
 829
 830   entry = blk->entries;
 831
 832   while (entry != NULL)
 833     {
 834       SYMBOL_VALUE (entry->symbol) += offset;
 835       SYMBOL_SECTION (entry->symbol) = secnum;
 836
 837       entry = entry->next;
 838     }
 839   blk->secnum = secnum;
 840 }
 841
 842 /* Patch all commons named "name" that need patching.Since COMMON
 843    blocks occur with relative infrequency, we simply do a linear scan on
 844    the name.  Eventually, the best way to do this will be a
 845    hashed-lookup.  Secnum is the section number for the .bss section
 846    (which is where common data lives). */
 847
 848 static void
 849 patch_all_commons_by_name (char *name, CORE_ADDR offset, int secnum)
 850 {
 851
 852   SAVED_F77_COMMON_PTR tmp;
 853
 854   /* For blank common blocks, change the canonical reprsentation
 855      of a blank name */
 856
 857   if (strcmp (name, BLANK_COMMON_NAME_ORIGINAL) == 0
 858       || strcmp (name, BLANK_COMMON_NAME_MF77) == 0)
 859     {
 860       xfree (name);
 861       name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
 862       strcpy (name, BLANK_COMMON_NAME_LOCAL);
 863     }
 864
 865   tmp = head_common_list;
 866
 867   while (tmp != NULL)
 868     {
 869       if (COMMON_NEEDS_PATCHING (tmp))
 870         if (strcmp (tmp->name, name) == 0)
 871           patch_common_entries (tmp, offset, secnum);
 872
 873       tmp = tmp->next;
 874     }
 875 }
 876 #endif
 877
 878 /* This macro adds the symbol-number for the start of the function
 879    (the symbol number of the .bf) referenced by symnum_fcn to a
 880    list.  This list, in reality should be a FIFO queue but since
 881    #line pragmas sometimes cause line ranges to get messed up
 882    we simply create a linear list.  This list can then be searched
 883    first by a queueing algorithm and upon failure fall back to
 884    a linear scan. */
 885
 886 #if 0
 887 #define ADD_BF_SYMNUM(bf_sym,fcn_sym) \
 888   \
 889   if (saved_bf_list == NULL) \
 890 { \
 891     tmp_bf_ptr = allocate_saved_bf_node(); \
 892       \
 893         tmp_bf_ptr->symnum_bf = (bf_sym); \
 894           tmp_bf_ptr->symnum_fcn = (fcn_sym);  \
 895             tmp_bf_ptr->next = NULL; \
 896               \
 897                 current_head_bf_list = saved_bf_list = tmp_bf_ptr; \
 898                   saved_bf_list_end = tmp_bf_ptr; \
 899                   } \
 900 else \
 901 {  \
 902      tmp_bf_ptr = allocate_saved_bf_node(); \
 903        \
 904          tmp_bf_ptr->symnum_bf = (bf_sym);  \
 905            tmp_bf_ptr->symnum_fcn = (fcn_sym);  \
 906              tmp_bf_ptr->next = NULL;  \
 907                \
 908                  saved_bf_list_end->next = tmp_bf_ptr;  \
 909                    saved_bf_list_end = tmp_bf_ptr; \
 910                    }
 911 #endif
 912
 913 /* This function frees the entire (.bf,function) list */
 914
 915 #if 0
 916 static void
 917 clear_bf_list (void)
 918 {
 919
 920   SAVED_BF_PTR tmp = saved_bf_list;
 921   SAVED_BF_PTR next = NULL;
 922
 923   while (tmp != NULL)
 924     {
 925       next = tmp->next;
 926       xfree (tmp);
 927       tmp = next;
 928     }
 929   saved_bf_list = NULL;
 930 }
 931 #endif
 932
 933 int global_remote_debug;
 934
 935 #if 0
 936
 937 static long
 938 get_bf_for_fcn (long the_function)
 939 {
 940   SAVED_BF_PTR tmp;
 941   int nprobes = 0;
 942
 943   /* First use a simple queuing algorithm (i.e. look and see if the
 944      item at the head of the queue is the one you want)  */
 945
 946   if (saved_bf_list == NULL)
 947     internal_error (__FILE__, __LINE__,
 948                     _("cannot get .bf node off empty list"));
 949
 950   if (current_head_bf_list != NULL)
 951     if (current_head_bf_list->symnum_fcn == the_function)
 952       {
 953         if (global_remote_debug)
 954           fprintf_unfiltered (gdb_stderr, "*");
 955
 956         tmp = current_head_bf_list;
 957         current_head_bf_list = current_head_bf_list->next;
 958         return (tmp->symnum_bf);
 959       }
 960
 961   /* If the above did not work (probably because #line directives were
 962      used in the sourcefile and they messed up our internal tables) we now do
 963      the ugly linear scan */
 964
 965   if (global_remote_debug)
 966     fprintf_unfiltered (gdb_stderr, "\ndefaulting to linear scan\n");
 967
 968   nprobes = 0;
 969   tmp = saved_bf_list;
 970   while (tmp != NULL)
 971     {
 972       nprobes++;
 973       if (tmp->symnum_fcn == the_function)
 974         {
 975           if (global_remote_debug)
 976             fprintf_unfiltered (gdb_stderr, "Found in %d probes\n", nprobes);
 977           current_head_bf_list = tmp->next;
 978           return (tmp->symnum_bf);
 979         }
 980       tmp = tmp->next;
 981     }
 982
 983   return (-1);
 984 }
 985
 986 static SAVED_FUNCTION_PTR saved_function_list = NULL;
 987 static SAVED_FUNCTION_PTR saved_function_list_end = NULL;
 988
 989 static void
 990 clear_function_list (void)
 991 {
 992   SAVED_FUNCTION_PTR tmp = saved_function_list;
 993   SAVED_FUNCTION_PTR next = NULL;
 994
 995   while (tmp != NULL)
 996     {
 997       next = tmp->next;
 998       xfree (tmp);
 999       tmp = next;
1000     }
1001
1002   saved_function_list = NULL;
1003 }
1004 #endif