gdb/f-lang.c

   1 /* Fortran language support routines for GDB, the GNU debugger.
   2    Copyright 1993, 1994, 1996 Free Software Foundation, Inc.
   3    Contributed by Motorola.  Adapted from the C parser by Farooq Butt
   4    (fmbutt@engage.sps.mot.com).
   5
   6 This file is part of GDB.
   7
   8 This program is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2 of the License, or
  11 (at your option) any later version.
  12
  13 This program is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with this program; if not, write to the Free Software
  20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  21
  22 #include "defs.h"
  23 #include "gdb_string.h"
  24 #include "symtab.h"
  25 #include "gdbtypes.h"
  26 #include "expression.h"
  27 #include "parser-defs.h"
  28 #include "language.h"
  29 #include "f-lang.h"
  30
  31 /* The built-in types of F77.  FIXME: integer*4 is missing, plain
  32    logical is missing (builtin_type_logical is logical*4).  */
  33
  34 struct type *builtin_type_f_character;
  35 struct type *builtin_type_f_logical;
  36 struct type *builtin_type_f_logical_s1;
  37 struct type *builtin_type_f_logical_s2;
  38 struct type *builtin_type_f_integer;
  39 struct type *builtin_type_f_integer_s2;
  40 struct type *builtin_type_f_real;
  41 struct type *builtin_type_f_real_s8;
  42 struct type *builtin_type_f_real_s16;
  43 struct type *builtin_type_f_complex_s8;
  44 struct type *builtin_type_f_complex_s16;
  45 struct type *builtin_type_f_complex_s32;
  46 struct type *builtin_type_f_void;
  47
  48 /* Following is dubious stuff that had been in the xcoff reader. */
  49
  50 struct saved_fcn
  51 {
  52   long                         line_offset;  /* Line offset for function */
  53   struct saved_fcn             *next;
  54 };
  55
  56
  57 struct saved_bf_symnum
  58 {
  59   long       symnum_fcn;  /* Symnum of function (i.e. .function directive) */
  60   long       symnum_bf;   /* Symnum of .bf for this function */
  61   struct saved_bf_symnum *next;
  62 };
  63
  64 typedef struct saved_fcn           SAVED_FUNCTION, *SAVED_FUNCTION_PTR;
  65 typedef struct saved_bf_symnum     SAVED_BF, *SAVED_BF_PTR;
  66
  67 /* Local functions */
  68
  69 extern void _initialize_f_language PARAMS ((void));
  70 #if 0
  71 static void clear_function_list PARAMS ((void));
  72 static long get_bf_for_fcn PARAMS ((long));
  73 static void clear_bf_list PARAMS ((void));
  74 static void patch_all_commons_by_name PARAMS ((char *, CORE_ADDR, int));
  75 static SAVED_F77_COMMON_PTR find_first_common_named PARAMS ((char *));
  76 static void add_common_entry PARAMS ((struct symbol *));
  77 static void add_common_block PARAMS ((char *, CORE_ADDR, int, char *));
  78 static SAVED_FUNCTION *allocate_saved_function_node PARAMS ((void));
  79 static SAVED_BF_PTR allocate_saved_bf_node PARAMS ((void));
  80 static COMMON_ENTRY_PTR allocate_common_entry_node PARAMS ((void));
  81 static SAVED_F77_COMMON_PTR allocate_saved_f77_common_node PARAMS ((void));
  82 static void patch_common_entries PARAMS ((SAVED_F77_COMMON_PTR, CORE_ADDR, int));
  83 #endif
  84
  85 static struct type *f_create_fundamental_type PARAMS ((struct objfile *, int));
  86 static void f_printstr PARAMS ((GDB_FILE *stream, char *string, unsigned int length, int width, int force_ellipses));
  87 static void f_printchar PARAMS ((int c, GDB_FILE *stream));
  88 static void f_emit_char PARAMS ((int c, GDB_FILE *stream, int quoter));
  89
  90 /* Print the character C on STREAM as part of the contents of a literal
  91    string whose delimiter is QUOTER.  Note that that format for printing
  92    characters and strings is language specific.
  93    FIXME:  This is a copy of the same function from c-exp.y.  It should
  94    be replaced with a true F77 version.  */
  95
  96 static void
  97 f_emit_char (c, stream, quoter)
  98      register int c;
  99      GDB_FILE *stream;
 100      int quoter;
 101 {
 102   c &= 0xFF;                    /* Avoid sign bit follies */
 103
 104   if (PRINT_LITERAL_FORM (c))
 105     {
 106       if (c == '\\' || c == quoter)
 107         fputs_filtered ("\\", stream);
 108       fprintf_filtered (stream, "%c", c);
 109     }
 110   else
 111     {
 112       switch (c)
 113         {
 114         case '\n':
 115           fputs_filtered ("\\n", stream);
 116           break;
 117         case '\b':
 118           fputs_filtered ("\\b", stream);
 119           break;
 120         case '\t':
 121           fputs_filtered ("\\t", stream);
 122           break;
 123         case '\f':
 124           fputs_filtered ("\\f", stream);
 125           break;
 126         case '\r':
 127           fputs_filtered ("\\r", stream);
 128           break;
 129         case '\033':
 130           fputs_filtered ("\\e", stream);
 131           break;
 132         case '\007':
 133           fputs_filtered ("\\a", stream);
 134           break;
 135         default:
 136           fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
 137           break;
 138         }
 139     }
 140 }
 141
 142 /* FIXME:  This is a copy of the same function from c-exp.y.  It should
 143    be replaced with a true F77version. */
 144
 145 static void
 146 f_printchar (c, stream)
 147      int c;
 148      GDB_FILE *stream;
 149 {
 150   fputs_filtered ("'", stream);
 151   LA_EMIT_CHAR (c, stream, '\'');
 152   fputs_filtered ("'", stream);
 153 }
 154
 155 /* Print the character string STRING, printing at most LENGTH characters.
 156    Printing stops early if the number hits print_max; repeat counts
 157    are printed as appropriate.  Print ellipses at the end if we
 158    had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
 159    FIXME:  This is a copy of the same function from c-exp.y.  It should
 160    be replaced with a true F77 version. */
 161
 162 static void
 163 f_printstr (stream, string, length, width, force_ellipses)
 164      GDB_FILE *stream;
 165      char *string;
 166      unsigned int length;
 167      int width;
 168      int force_ellipses;
 169 {
 170   register unsigned int i;
 171   unsigned int things_printed = 0;
 172   int in_quotes = 0;
 173   int need_comma = 0;
 174   extern int inspect_it;
 175   extern int repeat_count_threshold;
 176   extern int print_max;
 177
 178   if (length == 0)
 179     {
 180       fputs_filtered ("''", gdb_stdout);
 181       return;
 182     }
 183
 184   for (i = 0; i < length && things_printed < print_max; ++i)
 185     {
 186       /* Position of the character we are examining
 187          to see whether it is repeated.  */
 188       unsigned int rep1;
 189       /* Number of repetitions we have detected so far.  */
 190       unsigned int reps;
 191
 192       QUIT;
 193
 194       if (need_comma)
 195         {
 196           fputs_filtered (", ", stream);
 197           need_comma = 0;
 198         }
 199
 200       rep1 = i + 1;
 201       reps = 1;
 202       while (rep1 < length && string[rep1] == string[i])
 203         {
 204           ++rep1;
 205           ++reps;
 206         }
 207
 208       if (reps > repeat_count_threshold)
 209         {
 210           if (in_quotes)
 211             {
 212               if (inspect_it)
 213                 fputs_filtered ("\\', ", stream);
 214               else
 215                 fputs_filtered ("', ", stream);
 216               in_quotes = 0;
 217             }
 218           f_printchar (string[i], stream);
 219           fprintf_filtered (stream, " <repeats %u times>", reps);
 220           i = rep1 - 1;
 221           things_printed += repeat_count_threshold;
 222           need_comma = 1;
 223         }
 224       else
 225         {
 226           if (!in_quotes)
 227             {
 228               if (inspect_it)
 229                 fputs_filtered ("\\'", stream);
 230               else
 231                 fputs_filtered ("'", stream);
 232               in_quotes = 1;
 233             }
 234           LA_EMIT_CHAR (string[i], stream, '"');
 235           ++things_printed;
 236         }
 237     }
 238
 239   /* Terminate the quotes if necessary.  */
 240   if (in_quotes)
 241     {
 242       if (inspect_it)
 243         fputs_filtered ("\\'", stream);
 244       else
 245         fputs_filtered ("'", stream);
 246     }
 247
 248   if (force_ellipses || i < length)
 249     fputs_filtered ("...", stream);
 250 }
 251
 252 /* FIXME:  This is a copy of c_create_fundamental_type(), before
 253    all the non-C types were stripped from it.  Needs to be fixed
 254    by an experienced F77 programmer. */
 255
 256 static struct type *
 257 f_create_fundamental_type (objfile, typeid)
 258      struct objfile *objfile;
 259      int typeid;
 260 {
 261   register struct type *type = NULL;
 262
 263   switch (typeid)
 264     {
 265     case FT_VOID:
 266       type = init_type (TYPE_CODE_VOID,
 267                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 268                         0, "VOID", objfile);
 269       break;
 270     case FT_BOOLEAN:
 271       type = init_type (TYPE_CODE_BOOL,
 272                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 273                         TYPE_FLAG_UNSIGNED, "boolean", objfile);
 274       break;
 275     case FT_STRING:
 276       type = init_type (TYPE_CODE_STRING,
 277                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 278                         0, "string", objfile);
 279       break;
 280     case FT_CHAR:
 281       type = init_type (TYPE_CODE_INT,
 282                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 283                         0, "character", objfile);
 284       break;
 285     case FT_SIGNED_CHAR:
 286       type = init_type (TYPE_CODE_INT,
 287                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 288                         0, "integer*1", objfile);
 289       break;
 290     case FT_UNSIGNED_CHAR:
 291       type = init_type (TYPE_CODE_BOOL,
 292                         TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 293                         TYPE_FLAG_UNSIGNED, "logical*1", objfile);
 294       break;
 295     case FT_SHORT:
 296       type = init_type (TYPE_CODE_INT,
 297                         TARGET_SHORT_BIT / TARGET_CHAR_BIT,
 298                         0, "integer*2", objfile);
 299       break;
 300     case FT_SIGNED_SHORT:
 301       type = init_type (TYPE_CODE_INT,
 302                         TARGET_SHORT_BIT / TARGET_CHAR_BIT,
 303                         0, "short", objfile);   /* FIXME-fnf */
 304       break;
 305     case FT_UNSIGNED_SHORT:
 306       type = init_type (TYPE_CODE_BOOL,
 307                         TARGET_SHORT_BIT / TARGET_CHAR_BIT,
 308                         TYPE_FLAG_UNSIGNED, "logical*2", objfile);
 309       break;
 310     case FT_INTEGER:
 311       type = init_type (TYPE_CODE_INT,
 312                         TARGET_INT_BIT / TARGET_CHAR_BIT,
 313                         0, "integer*4", objfile);
 314       break;
 315     case FT_SIGNED_INTEGER:
 316       type = init_type (TYPE_CODE_INT,
 317                         TARGET_INT_BIT / TARGET_CHAR_BIT,
 318                         0, "integer", objfile); /* FIXME -fnf */
 319       break;
 320     case FT_UNSIGNED_INTEGER:
 321       type = init_type (TYPE_CODE_BOOL,
 322                         TARGET_INT_BIT / TARGET_CHAR_BIT,
 323                         TYPE_FLAG_UNSIGNED, "logical*4", objfile);
 324       break;
 325     case FT_FIXED_DECIMAL:
 326       type = init_type (TYPE_CODE_INT,
 327                         TARGET_INT_BIT / TARGET_CHAR_BIT,
 328                         0, "fixed decimal", objfile);
 329       break;
 330     case FT_LONG:
 331       type = init_type (TYPE_CODE_INT,
 332                         TARGET_LONG_BIT / TARGET_CHAR_BIT,
 333                         0, "long", objfile);
 334       break;
 335     case FT_SIGNED_LONG:
 336       type = init_type (TYPE_CODE_INT,
 337                         TARGET_LONG_BIT / TARGET_CHAR_BIT,
 338                         0, "long", objfile); /* FIXME -fnf */
 339       break;
 340     case FT_UNSIGNED_LONG:
 341       type = init_type (TYPE_CODE_INT,
 342                         TARGET_LONG_BIT / TARGET_CHAR_BIT,
 343                         TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
 344       break;
 345     case FT_LONG_LONG:
 346       type = init_type (TYPE_CODE_INT,
 347                         TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
 348                         0, "long long", objfile);
 349       break;
 350     case FT_SIGNED_LONG_LONG:
 351       type = init_type (TYPE_CODE_INT,
 352                         TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
 353                         0, "signed long long", objfile);
 354       break;
 355     case FT_UNSIGNED_LONG_LONG:
 356       type = init_type (TYPE_CODE_INT,
 357                         TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
 358                         TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
 359       break;
 360     case FT_FLOAT:
 361       type = init_type (TYPE_CODE_FLT,
 362                         TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
 363                         0, "real", objfile);
 364       break;
 365     case FT_DBL_PREC_FLOAT:
 366       type = init_type (TYPE_CODE_FLT,
 367                         TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
 368                         0, "real*8", objfile);
 369       break;
 370     case FT_FLOAT_DECIMAL:
 371       type = init_type (TYPE_CODE_FLT,
 372                         TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
 373                         0, "floating decimal", objfile);
 374       break;
 375     case FT_EXT_PREC_FLOAT:
 376       type = init_type (TYPE_CODE_FLT,
 377                         TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
 378                         0, "real*16", objfile);
 379       break;
 380     case FT_COMPLEX:
 381       type = init_type (TYPE_CODE_COMPLEX,
 382                         2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
 383                         0, "complex*8", objfile);
 384       TYPE_TARGET_TYPE (type) = builtin_type_f_real;
 385       break;
 386     case FT_DBL_PREC_COMPLEX:
 387       type = init_type (TYPE_CODE_COMPLEX,
 388                         2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
 389                         0, "complex*16", objfile);
 390       TYPE_TARGET_TYPE (type) = builtin_type_f_real_s8;
 391       break;
 392     case FT_EXT_PREC_COMPLEX:
 393       type = init_type (TYPE_CODE_COMPLEX,
 394                         2 * TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
 395                         0, "complex*32", objfile);
 396       TYPE_TARGET_TYPE (type) = builtin_type_f_real_s16;
 397       break;
 398     default:
 399       /* FIXME:  For now, if we are asked to produce a type not in this
 400          language, create the equivalent of a C integer type with the
 401          name "<?type?>".  When all the dust settles from the type
 402          reconstruction work, this should probably become an error. */
 403       type = init_type (TYPE_CODE_INT,
 404                         TARGET_INT_BIT / TARGET_CHAR_BIT,
 405                         0, "<?type?>", objfile);
 406       warning ("internal error: no F77 fundamental type %d", typeid);
 407       break;
 408     }
 409   return (type);
 410 }
 411
 412 \f
 413 /* Table of operators and their precedences for printing expressions.  */
 414
 415 static const struct op_print f_op_print_tab[] = {
 416   { "+",     BINOP_ADD, PREC_ADD, 0 },
 417   { "+",     UNOP_PLUS, PREC_PREFIX, 0 },
 418   { "-",     BINOP_SUB, PREC_ADD, 0 },
 419   { "-",     UNOP_NEG, PREC_PREFIX, 0 },
 420   { "*",     BINOP_MUL, PREC_MUL, 0 },
 421   { "/",     BINOP_DIV, PREC_MUL, 0 },
 422   { "DIV",   BINOP_INTDIV, PREC_MUL, 0 },
 423   { "MOD",   BINOP_REM, PREC_MUL, 0 },
 424   { "=",     BINOP_ASSIGN, PREC_ASSIGN, 1 },
 425   { ".OR.",  BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0 },
 426   { ".AND.", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0 },
 427   { ".NOT.", UNOP_LOGICAL_NOT, PREC_PREFIX, 0 },
 428   { ".EQ.",  BINOP_EQUAL, PREC_EQUAL, 0 },
 429   { ".NE.",  BINOP_NOTEQUAL, PREC_EQUAL, 0 },
 430   { ".LE.",  BINOP_LEQ, PREC_ORDER, 0 },
 431   { ".GE.",  BINOP_GEQ, PREC_ORDER, 0 },
 432   { ".GT.",  BINOP_GTR, PREC_ORDER, 0 },
 433   { ".LT.",  BINOP_LESS, PREC_ORDER, 0 },
 434   { "**",    UNOP_IND, PREC_PREFIX, 0 },
 435   { "@",     BINOP_REPEAT, PREC_REPEAT, 0 },
 436   { NULL,    0, 0, 0 }
 437 };
 438 \f
 439 struct type ** CONST_PTR (f_builtin_types[]) =
 440 {
 441   &builtin_type_f_character,
 442   &builtin_type_f_logical,
 443   &builtin_type_f_logical_s1,
 444   &builtin_type_f_logical_s2,
 445   &builtin_type_f_integer,
 446   &builtin_type_f_integer_s2,
 447   &builtin_type_f_real,
 448   &builtin_type_f_real_s8,
 449   &builtin_type_f_real_s16,
 450   &builtin_type_f_complex_s8,
 451   &builtin_type_f_complex_s16,
 452 #if 0
 453   &builtin_type_f_complex_s32,
 454 #endif
 455   &builtin_type_f_void,
 456   0
 457 };
 458
 459 /* This is declared in c-lang.h but it is silly to import that file for what
 460    is already just a hack. */
 461 extern int
 462 c_value_print PARAMS ((struct value *, GDB_FILE *, int, enum val_prettyprint));
 463
 464 const struct language_defn f_language_defn = {
 465   "fortran",
 466   language_fortran,
 467   f_builtin_types,
 468   range_check_on,
 469   type_check_on,
 470   f_parse,                      /* parser */
 471   f_error,                      /* parser error function */
 472   evaluate_subexp_standard,
 473   f_printchar,                  /* Print character constant */
 474   f_printstr,                   /* function to print string constant */
 475   f_emit_char,                  /* Function to print a single character */
 476   f_create_fundamental_type,    /* Create fundamental type in this language */
 477   f_print_type,                 /* Print a type using appropriate syntax */
 478   f_val_print,                  /* Print a value using appropriate syntax */
 479   c_value_print,  /* FIXME */
 480   {"",      "",   "",   ""},    /* Binary format info */
 481   {"0%o",  "0",   "o", ""},     /* Octal format info */
 482   {"%d",   "",    "d", ""},     /* Decimal format info */
 483   {"0x%x", "0x",  "x", ""},     /* Hex format info */
 484   f_op_print_tab,               /* expression operators for printing */
 485   0,                            /* arrays are first-class (not c-style) */
 486   1,                            /* String lower bound */
 487   &builtin_type_f_character,    /* Type of string elements */
 488   LANG_MAGIC
 489   };
 490
 491 void
 492 _initialize_f_language ()
 493 {
 494   builtin_type_f_void =
 495     init_type (TYPE_CODE_VOID, 1,
 496                0,
 497                "VOID", (struct objfile *) NULL);
 498
 499   builtin_type_f_character =
 500     init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 501                0,
 502                "character", (struct objfile *) NULL);
 503
 504   builtin_type_f_logical_s1 =
 505     init_type (TYPE_CODE_BOOL, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 506                TYPE_FLAG_UNSIGNED,
 507                "logical*1", (struct objfile *) NULL);
 508
 509   builtin_type_f_integer_s2 =
 510     init_type (TYPE_CODE_INT, TARGET_SHORT_BIT / TARGET_CHAR_BIT,
 511                0,
 512                "integer*2", (struct objfile *) NULL);
 513
 514   builtin_type_f_logical_s2 =
 515     init_type (TYPE_CODE_BOOL, TARGET_SHORT_BIT / TARGET_CHAR_BIT,
 516                TYPE_FLAG_UNSIGNED,
 517                "logical*2", (struct objfile *) NULL);
 518
 519   builtin_type_f_integer =
 520     init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
 521                0,
 522                "integer", (struct objfile *) NULL);
 523
 524   builtin_type_f_logical =
 525     init_type (TYPE_CODE_BOOL, TARGET_INT_BIT / TARGET_CHAR_BIT,
 526                TYPE_FLAG_UNSIGNED,
 527                "logical*4", (struct objfile *) NULL);
 528
 529   builtin_type_f_real =
 530     init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
 531                0,
 532                "real", (struct objfile *) NULL);
 533
 534   builtin_type_f_real_s8 =
 535     init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
 536                0,
 537                "real*8", (struct objfile *) NULL);
 538
 539   builtin_type_f_real_s16 =
 540     init_type (TYPE_CODE_FLT, TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
 541                0,
 542                "real*16", (struct objfile *) NULL);
 543
 544   builtin_type_f_complex_s8 =
 545     init_type (TYPE_CODE_COMPLEX, 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
 546                0,
 547                "complex*8", (struct objfile *) NULL);
 548   TYPE_TARGET_TYPE (builtin_type_f_complex_s8) = builtin_type_f_real;
 549
 550   builtin_type_f_complex_s16 =
 551     init_type (TYPE_CODE_COMPLEX, 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
 552                0,
 553                "complex*16", (struct objfile *) NULL);
 554   TYPE_TARGET_TYPE (builtin_type_f_complex_s16) = builtin_type_f_real_s8;
 555
 556   /* We have a new size == 4 double floats for the
 557      complex*32 data type */
 558
 559   builtin_type_f_complex_s32 =
 560     init_type (TYPE_CODE_COMPLEX, 2 * TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
 561                0,
 562                "complex*32", (struct objfile *) NULL);
 563   TYPE_TARGET_TYPE (builtin_type_f_complex_s32) = builtin_type_f_real_s16;
 564
 565   builtin_type_string =
 566     init_type (TYPE_CODE_STRING, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 567                0,
 568                "character string", (struct objfile *) NULL);
 569
 570   add_language (&f_language_defn);
 571 }
 572
 573 #if 0
 574 static SAVED_BF_PTR
 575 allocate_saved_bf_node()
 576 {
 577   SAVED_BF_PTR new;
 578
 579   new = (SAVED_BF_PTR) xmalloc (sizeof (SAVED_BF));
 580   return(new);
 581 }
 582
 583 static SAVED_FUNCTION *
 584 allocate_saved_function_node()
 585 {
 586   SAVED_FUNCTION *new;
 587
 588   new = (SAVED_FUNCTION *) xmalloc (sizeof (SAVED_FUNCTION));
 589   return(new);
 590 }
 591
 592 static SAVED_F77_COMMON_PTR allocate_saved_f77_common_node()
 593 {
 594   SAVED_F77_COMMON_PTR new;
 595
 596   new = (SAVED_F77_COMMON_PTR) xmalloc (sizeof (SAVED_F77_COMMON));
 597   return(new);
 598 }
 599
 600 static COMMON_ENTRY_PTR allocate_common_entry_node()
 601 {
 602   COMMON_ENTRY_PTR new;
 603
 604   new = (COMMON_ENTRY_PTR) xmalloc (sizeof (COMMON_ENTRY));
 605   return(new);
 606 }
 607 #endif
 608
 609 SAVED_F77_COMMON_PTR head_common_list=NULL;     /* Ptr to 1st saved COMMON  */
 610 SAVED_F77_COMMON_PTR tail_common_list=NULL;     /* Ptr to last saved COMMON  */
 611 SAVED_F77_COMMON_PTR current_common=NULL;       /* Ptr to current COMMON */
 612
 613 #if 0
 614 static SAVED_BF_PTR saved_bf_list=NULL;          /* Ptr to (.bf,function)
 615                                                     list*/
 616 static SAVED_BF_PTR saved_bf_list_end=NULL;      /* Ptr to above list's end */
 617 static SAVED_BF_PTR current_head_bf_list=NULL;   /* Current head of above list
 618                                                   */
 619
 620 static SAVED_BF_PTR tmp_bf_ptr;                  /* Generic temporary for use
 621                                                     in macros */
 622
 623 /* The following function simply enters a given common block onto
 624    the global common block chain */
 625
 626 static void
 627 add_common_block(name,offset,secnum,func_stab)
 628      char *name;
 629      CORE_ADDR offset;
 630      int secnum;
 631      char *func_stab;
 632 {
 633   SAVED_F77_COMMON_PTR tmp;
 634   char *c,*local_copy_func_stab;
 635
 636   /* If the COMMON block we are trying to add has a blank
 637      name (i.e. "#BLNK_COM") then we set it to __BLANK
 638      because the darn "#" character makes GDB's input
 639      parser have fits. */
 640
 641
 642   if (STREQ(name,BLANK_COMMON_NAME_ORIGINAL) ||
 643       STREQ(name,BLANK_COMMON_NAME_MF77))
 644     {
 645
 646       free(name);
 647       name = alloca(strlen(BLANK_COMMON_NAME_LOCAL) + 1);
 648       strcpy(name,BLANK_COMMON_NAME_LOCAL);
 649     }
 650
 651   tmp = allocate_saved_f77_common_node();
 652
 653   local_copy_func_stab = xmalloc (strlen(func_stab) + 1);
 654   strcpy(local_copy_func_stab,func_stab);
 655
 656   tmp->name = xmalloc(strlen(name) + 1);
 657
 658   /* local_copy_func_stab is a stabstring, let us first extract the
 659      function name from the stab by NULLing out the ':' character. */
 660
 661
 662   c = NULL;
 663   c = strchr(local_copy_func_stab,':');
 664
 665   if (c)
 666     *c = '\0';
 667   else
 668     error("Malformed function STAB found in add_common_block()");
 669
 670
 671   tmp->owning_function = xmalloc (strlen(local_copy_func_stab) + 1);
 672
 673   strcpy(tmp->owning_function,local_copy_func_stab);
 674
 675   strcpy(tmp->name,name);
 676   tmp->offset = offset;
 677   tmp->next = NULL;
 678   tmp->entries = NULL;
 679   tmp->secnum = secnum;
 680
 681   current_common = tmp;
 682
 683   if (head_common_list == NULL)
 684     {
 685       head_common_list = tail_common_list = tmp;
 686     }
 687   else
 688     {
 689       tail_common_list->next = tmp;
 690       tail_common_list = tmp;
 691     }
 692 }
 693 #endif
 694
 695 /* The following function simply enters a given common entry onto
 696    the "current_common" block that has been saved away. */
 697
 698 #if 0
 699 static void
 700 add_common_entry(entry_sym_ptr)
 701      struct symbol *entry_sym_ptr;
 702 {
 703   COMMON_ENTRY_PTR tmp;
 704
 705
 706
 707   /* The order of this list is important, since
 708      we expect the entries to appear in decl.
 709      order when we later issue "info common" calls */
 710
 711   tmp = allocate_common_entry_node();
 712
 713   tmp->next = NULL;
 714   tmp->symbol = entry_sym_ptr;
 715
 716   if (current_common == NULL)
 717     error("Attempt to add COMMON entry with no block open!");
 718   else
 719     {
 720       if (current_common->entries == NULL)
 721         {
 722           current_common->entries = tmp;
 723           current_common->end_of_entries = tmp;
 724         }
 725       else
 726         {
 727           current_common->end_of_entries->next = tmp;
 728           current_common->end_of_entries = tmp;
 729         }
 730     }
 731 }
 732 #endif
 733
 734 /* This routine finds the first encountred COMMON block named "name" */
 735
 736 #if 0
 737 static SAVED_F77_COMMON_PTR
 738 find_first_common_named(name)
 739      char *name;
 740 {
 741
 742   SAVED_F77_COMMON_PTR tmp;
 743
 744   tmp = head_common_list;
 745
 746   while (tmp != NULL)
 747     {
 748       if (STREQ(tmp->name,name))
 749         return(tmp);
 750       else
 751         tmp = tmp->next;
 752     }
 753   return(NULL);
 754 }
 755 #endif
 756
 757 /* This routine finds the first encountred COMMON block named "name"
 758    that belongs to function funcname */
 759
 760 SAVED_F77_COMMON_PTR find_common_for_function(name, funcname)
 761      char *name;
 762      char *funcname;
 763 {
 764
 765   SAVED_F77_COMMON_PTR tmp;
 766
 767   tmp = head_common_list;
 768
 769   while (tmp != NULL)
 770     {
 771       if (STREQ(tmp->name,name) && STREQ(tmp->owning_function,funcname))
 772         return(tmp);
 773       else
 774         tmp = tmp->next;
 775     }
 776   return(NULL);
 777 }
 778
 779
 780 #if 0
 781
 782 /* The following function is called to patch up the offsets
 783    for the statics contained in the COMMON block named
 784    "name."  */
 785
 786 static void
 787 patch_common_entries (blk, offset, secnum)
 788      SAVED_F77_COMMON_PTR blk;
 789      CORE_ADDR offset;
 790      int secnum;
 791 {
 792   COMMON_ENTRY_PTR entry;
 793
 794   blk->offset = offset;  /* Keep this around for future use. */
 795
 796   entry = blk->entries;
 797
 798   while (entry != NULL)
 799     {
 800       SYMBOL_VALUE (entry->symbol) += offset;
 801       SYMBOL_SECTION (entry->symbol) = secnum;
 802
 803       entry = entry->next;
 804     }
 805   blk->secnum = secnum;
 806 }
 807
 808 /* Patch all commons named "name" that need patching.Since COMMON
 809    blocks occur with relative infrequency, we simply do a linear scan on
 810    the name.  Eventually, the best way to do this will be a
 811    hashed-lookup.  Secnum is the section number for the .bss section
 812    (which is where common data lives). */
 813
 814 static void
 815 patch_all_commons_by_name (name, offset, secnum)
 816      char *name;
 817      CORE_ADDR offset;
 818      int secnum;
 819 {
 820
 821   SAVED_F77_COMMON_PTR tmp;
 822
 823   /* For blank common blocks, change the canonical reprsentation
 824      of a blank name */
 825
 826   if ((STREQ(name,BLANK_COMMON_NAME_ORIGINAL)) ||
 827       (STREQ(name,BLANK_COMMON_NAME_MF77)))
 828     {
 829       free(name);
 830       name = alloca(strlen(BLANK_COMMON_NAME_LOCAL) + 1);
 831       strcpy(name,BLANK_COMMON_NAME_LOCAL);
 832     }
 833
 834   tmp = head_common_list;
 835
 836   while (tmp != NULL)
 837     {
 838       if (COMMON_NEEDS_PATCHING(tmp))
 839         if (STREQ(tmp->name,name))
 840           patch_common_entries(tmp,offset,secnum);
 841
 842       tmp = tmp->next;
 843     }
 844 }
 845 #endif
 846
 847 /* This macro adds the symbol-number for the start of the function
 848    (the symbol number of the .bf) referenced by symnum_fcn to a
 849    list.  This list, in reality should be a FIFO queue but since
 850    #line pragmas sometimes cause line ranges to get messed up
 851    we simply create a linear list.  This list can then be searched
 852    first by a queueing algorithm and upon failure fall back to
 853    a linear scan. */
 854
 855 #if 0
 856 #define ADD_BF_SYMNUM(bf_sym,fcn_sym) \
 857   \
 858   if (saved_bf_list == NULL) \
 859 { \
 860     tmp_bf_ptr = allocate_saved_bf_node(); \
 861       \
 862         tmp_bf_ptr->symnum_bf = (bf_sym); \
 863           tmp_bf_ptr->symnum_fcn = (fcn_sym);  \
 864             tmp_bf_ptr->next = NULL; \
 865               \
 866                 current_head_bf_list = saved_bf_list = tmp_bf_ptr; \
 867                   saved_bf_list_end = tmp_bf_ptr; \
 868                   } \
 869 else \
 870 {  \
 871      tmp_bf_ptr = allocate_saved_bf_node(); \
 872        \
 873          tmp_bf_ptr->symnum_bf = (bf_sym);  \
 874            tmp_bf_ptr->symnum_fcn = (fcn_sym);  \
 875              tmp_bf_ptr->next = NULL;  \
 876                \
 877                  saved_bf_list_end->next = tmp_bf_ptr;  \
 878                    saved_bf_list_end = tmp_bf_ptr; \
 879                    }
 880 #endif
 881
 882 /* This function frees the entire (.bf,function) list */
 883
 884 #if 0
 885 static void
 886   clear_bf_list()
 887 {
 888
 889   SAVED_BF_PTR tmp = saved_bf_list;
 890   SAVED_BF_PTR next = NULL;
 891
 892   while (tmp != NULL)
 893     {
 894       next = tmp->next;
 895       free(tmp);
 896       tmp=next;
 897     }
 898   saved_bf_list = NULL;
 899 }
 900 #endif
 901
 902 int global_remote_debug;
 903
 904 #if 0
 905
 906 static long
 907 get_bf_for_fcn (the_function)
 908      long the_function;
 909 {
 910   SAVED_BF_PTR tmp;
 911   int nprobes = 0;
 912
 913   /* First use a simple queuing algorithm (i.e. look and see if the
 914      item at the head of the queue is the one you want)  */
 915
 916   if (saved_bf_list == NULL)
 917     fatal ("cannot get .bf node off empty list");
 918
 919   if (current_head_bf_list != NULL)
 920     if (current_head_bf_list->symnum_fcn == the_function)
 921       {
 922         if (global_remote_debug)
 923           fprintf(stderr,"*");
 924
 925         tmp = current_head_bf_list;
 926         current_head_bf_list = current_head_bf_list->next;
 927         return(tmp->symnum_bf);
 928       }
 929
 930   /* If the above did not work (probably because #line directives were
 931      used in the sourcefile and they messed up our internal tables) we now do
 932      the ugly linear scan */
 933
 934   if (global_remote_debug)
 935     fprintf(stderr,"\ndefaulting to linear scan\n");
 936
 937   nprobes = 0;
 938   tmp = saved_bf_list;
 939   while (tmp != NULL)
 940     {
 941       nprobes++;
 942       if (tmp->symnum_fcn == the_function)
 943         {
 944           if (global_remote_debug)
 945             fprintf(stderr,"Found in %d probes\n",nprobes);
 946           current_head_bf_list = tmp->next;
 947           return(tmp->symnum_bf);
 948         }
 949       tmp= tmp->next;
 950     }
 951
 952   return(-1);
 953 }
 954
 955 static SAVED_FUNCTION_PTR saved_function_list=NULL;
 956 static SAVED_FUNCTION_PTR saved_function_list_end=NULL;
 957
 958 static void
 959 clear_function_list()
 960 {
 961   SAVED_FUNCTION_PTR tmp = saved_function_list;
 962   SAVED_FUNCTION_PTR next = NULL;
 963
 964   while (tmp != NULL)
 965     {
 966       next = tmp->next;
 967       free(tmp);
 968       tmp = next;
 969     }
 970
 971   saved_function_list = NULL;
 972 }
 973 #endif
 974