sim/igen/lf.c

   1 /* The IGEN simulator generator for GDB, the GNU Debugger.
   2
   3    Copyright 2002 Free Software Foundation, Inc.
   4
   5    Contributed by Andrew Cagney.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 59 Temple Place - Suite 330,
  22    Boston, MA 02111-1307, USA.  */
  23
  24
  25
  26 #include <stdio.h>
  27 #include <stdarg.h>
  28 #include <ctype.h>
  29
  30 #include "config.h"
  31 #include "misc.h"
  32 #include "lf.h"
  33
  34 #ifdef HAVE_STDLIB_H
  35 #include <stdlib.h>
  36 #endif
  37
  38 #ifdef HAVE_STRING_H
  39 #include <string.h>
  40 #else
  41 #ifdef HAVE_STRINGS_H
  42 #include <strings.h>
  43 #endif
  44 #endif
  45
  46 struct _lf {
  47   FILE *stream;
  48   int line_nr; /* nr complete lines written, curr line is line_nr+1 */
  49   int indent;
  50   int line_blank;
  51   const char *name;
  52   const char *program;
  53   lf_file_references references;
  54   lf_file_type type;
  55 };
  56
  57
  58 lf *
  59 lf_open (char *name,
  60          char *real_name,
  61          lf_file_references references,
  62          lf_file_type type,
  63          const char *program)
  64 {
  65   /* create a file object */
  66   lf *new_lf = ZALLOC(lf);
  67   ASSERT (new_lf != NULL);
  68   new_lf->references = references;
  69   new_lf->type = type;
  70   new_lf->name = (real_name == NULL ? name : real_name);
  71   new_lf->program = program;
  72   /* attach to stdout if pipe */
  73   if (!strcmp(name, "-")) {
  74     new_lf->stream = stdout;
  75   }
  76   else {
  77     /* create a new file */
  78     new_lf->stream = fopen(name, "w");
  79     if (new_lf->stream == NULL) {
  80       perror(name);
  81       exit(1);
  82     }
  83   }
  84   return new_lf;
  85 }
  86
  87
  88 void
  89 lf_close(lf *file)
  90 {
  91   if (file->stream != stdout) {
  92     if (fclose(file->stream)) {
  93       perror("lf_close.fclose");
  94       exit(1);
  95     }
  96     free(file);
  97   }
  98 }
  99
 100
 101 int
 102 lf_putchr(lf *file,
 103           const char chr)
 104 {
 105   int nr = 0;
 106   if (chr == '\n') {
 107     file->line_nr += 1;
 108     file->line_blank = 1;
 109   }
 110   else if (file->line_blank) {
 111     int pad;
 112     for (pad = file->indent; pad > 0; pad--)
 113       putc(' ', file->stream);
 114     nr += file->indent;
 115     file->line_blank = 0;
 116   }
 117   putc(chr, file->stream);
 118   nr += 1;
 119   return nr;
 120 }
 121
 122 int
 123 lf_write (lf *file,
 124           const char *string,
 125           int strlen_string)
 126 {
 127   int nr = 0;
 128   int i;
 129   for (i = 0; i < strlen_string; i++)
 130     nr += lf_putchr (file, string[i]);
 131   return nr;
 132 }
 133
 134
 135 void
 136 lf_indent_suppress(lf *file)
 137 {
 138   file->line_blank = 0;
 139 }
 140
 141
 142 int
 143 lf_putstr(lf *file,
 144           const char *string)
 145 {
 146   int nr = 0;
 147   const char *chp;
 148   if (string != NULL) {
 149     for (chp = string; *chp != '\0'; chp++) {
 150       nr += lf_putchr(file, *chp);
 151     }
 152   }
 153   return nr;
 154 }
 155
 156 static int
 157 do_lf_putunsigned(lf *file,
 158               unsigned u)
 159 {
 160   int nr = 0;
 161   if (u > 0) {
 162     nr += do_lf_putunsigned(file, u / 10);
 163     nr += lf_putchr(file, (u % 10) + '0');
 164   }
 165   return nr;
 166 }
 167
 168
 169 int
 170 lf_putint(lf *file,
 171           int decimal)
 172 {
 173   int nr = 0;
 174   if (decimal == 0)
 175     nr += lf_putchr(file, '0');
 176   else if (decimal < 0) {
 177     nr += lf_putchr(file, '-');
 178     nr += do_lf_putunsigned(file, -decimal);
 179   }
 180   else if (decimal > 0) {
 181     nr += do_lf_putunsigned(file, decimal);
 182   }
 183   else
 184     ASSERT(0);
 185   return nr;
 186 }
 187
 188
 189 int
 190 lf_printf (lf *file,
 191            const char *fmt,
 192            ...)
 193 {
 194   int nr = 0;
 195   char buf[1024];
 196   va_list ap;
 197
 198   va_start (ap, fmt);
 199   vsprintf (buf, fmt, ap);
 200   /* FIXME - this is really stuffed but so is vsprintf() on a sun! */
 201   ASSERT (strlen (buf) < sizeof (buf));
 202   nr += lf_putstr (file, buf);
 203   va_end(ap);
 204   return nr;
 205 }
 206
 207
 208 int
 209 lf_print__line_ref (lf *file,
 210                     line_ref *line)
 211 {
 212   return lf_print__external_ref (file, line->line_nr, line->file_name);
 213 }
 214
 215 int
 216 lf_print__external_ref (lf *file,
 217                         int line_nr,
 218                         const char *file_name)
 219 {
 220   int nr = 0;
 221   switch (file->references)
 222     {
 223     case lf_include_references:
 224       lf_indent_suppress(file);
 225       nr += lf_putstr (file, "#line ");
 226       nr += lf_putint (file, line_nr);
 227       nr += lf_putstr (file, " \"");
 228       nr += lf_putstr (file, file_name);
 229       nr += lf_putstr (file, "\"\n");
 230       break;
 231     case lf_omit_references:
 232       nr += lf_putstr (file, "/* ");
 233       nr += lf_putstr (file, file_name);
 234       nr += lf_putstr (file, ":");
 235       nr += lf_putint (file, line_nr);
 236       nr += lf_putstr (file, "*/\n");
 237       break;
 238     }
 239   return nr;
 240 }
 241
 242 int
 243 lf_print__internal_ref (lf *file)
 244 {
 245   int nr = 0;
 246   nr += lf_print__external_ref (file, file->line_nr+2, file->name);
 247   /* line_nr == last_line, want to number from next */
 248   return nr;
 249 }
 250
 251 void
 252 lf_indent (lf *file, int delta)
 253 {
 254   file->indent += delta;
 255 }
 256
 257
 258 int
 259 lf_print__gnu_copyleft (lf *file)
 260 {
 261   int nr = 0;
 262   switch (file->type) {
 263   case lf_is_c:
 264   case lf_is_h:
 265     nr += lf_printf(file, "\
 266 /* This file is part of GDB.\n\
 267 \n\
 268    Copyright 2002 Free Software Foundation, Inc.\n\
 269 \n\
 270    This program is free software; you can redistribute it and/or modify\n\
 271    it under the terms of the GNU General Public License as published by\n\
 272    the Free Software Foundation; either version 2 of the License, or\n\
 273    (at your option) any later version.\n\
 274 \n\
 275    This program is distributed in the hope that it will be useful,\n\
 276    but WITHOUT ANY WARRANTY; without even the implied warranty of\n\
 277    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n\
 278    GNU General Public License for more details.\n\
 279  \n\
 280    You should have received a copy of the GNU General Public License\n\
 281    along with this program; if not, write to the Free Software\n\
 282    Foundation, Inc., 59 Temple Place - Suite 330,\n\
 283    Boston, MA 02111-1307, USA.\n\
 284 \n\
 285    --\n\
 286 \n\
 287    This file was generated by the program %s */\n\
 288 ", filter_filename(file->program));
 289     break;
 290   default:
 291     ASSERT(0);
 292     break;
 293   }
 294   return nr;
 295 }
 296
 297
 298 int
 299 lf_putbin(lf *file, int decimal, int width)
 300 {
 301   int nr = 0;
 302   int bit;
 303   ASSERT(width > 0);
 304   for (bit = 1 << (width-1); bit != 0; bit >>= 1) {
 305     if (decimal & bit)
 306       nr += lf_putchr(file, '1');
 307     else
 308       nr += lf_putchr(file, '0');
 309   }
 310   return nr;
 311 }
 312
 313 int
 314 lf_print__this_file_is_empty(lf *file,
 315                              const char *reason)
 316 {
 317   int nr = 0;
 318   switch (file->type) {
 319   case lf_is_c:
 320   case lf_is_h:
 321     nr += lf_printf (file,
 322                     "/* This generated file (%s) is intentionally left blank",
 323                     file->name);
 324     if (reason != NULL)
 325       nr += lf_printf (file, " - %s", reason);
 326     nr += lf_printf (file, " */\n");
 327     break;
 328   default:
 329     ERROR ("Bad switch");
 330   }
 331   return nr;
 332 }
 333
 334 int
 335 lf_print__ucase_filename(lf *file)
 336 {
 337   int nr = 0;
 338   const char *chp = file->name;
 339   while (*chp != '\0') {
 340     char ch = *chp;
 341     if (islower(ch)) {
 342       nr += lf_putchr(file, toupper(ch));
 343     }
 344     else if (ch == '.')
 345       nr += lf_putchr(file, '_');
 346     else
 347       nr += lf_putchr(file, ch);
 348     chp++;
 349   }
 350   return nr;
 351 }
 352
 353 int
 354 lf_print__file_start(lf *file)
 355 {
 356   int nr = 0;
 357   switch (file->type) {
 358   case lf_is_h:
 359   case lf_is_c:
 360     nr += lf_print__gnu_copyleft(file);
 361     nr += lf_printf(file, "\n");
 362     nr += lf_printf(file, "#ifndef ");
 363     nr += lf_print__ucase_filename(file);
 364     nr += lf_printf(file, "\n");
 365     nr += lf_printf(file, "#define ");
 366     nr += lf_print__ucase_filename(file);
 367     nr += lf_printf(file, "\n");
 368     nr += lf_printf(file, "\n");
 369     break;
 370   default:
 371     ASSERT(0);
 372   }
 373   return nr;
 374 }
 375
 376
 377 int
 378 lf_print__file_finish(lf *file)
 379 {
 380   int nr = 0;
 381   switch (file->type) {
 382   case lf_is_h:
 383   case lf_is_c:
 384     nr += lf_printf(file, "\n");
 385     nr += lf_printf(file, "#endif /* _");
 386     nr += lf_print__ucase_filename(file);
 387     nr += lf_printf(file, "_*/\n");
 388     break;
 389   default:
 390     ASSERT(0);
 391   }
 392   return nr;
 393 }
 394
 395
 396 int
 397 lf_print__function_type (lf *file,
 398                          const char *type,
 399                          const char *prefix,
 400                          const char *trailing_space)
 401 {
 402   int nr = 0;
 403   nr += lf_printf (file, "%s\\\n(%s)", prefix, type);
 404   if (trailing_space != NULL)
 405     nr += lf_printf (file, "%s", trailing_space);
 406   return nr;
 407 }
 408
 409 int
 410 lf_print__function_type_function (lf *file,
 411                                   print_function *print_type,
 412                                   const char *prefix,
 413                                   const char *trailing_space)
 414 {
 415   int nr = 0;
 416   nr += lf_printf (file, "%s\\\n(", prefix);
 417   nr += print_type (file);
 418   nr += lf_printf (file, ")");
 419   if (trailing_space != NULL)
 420     nr += lf_printf (file, "%s", trailing_space);
 421   return nr;
 422 }
 423