sim/igen/lf.c

   1 /* The IGEN simulator generator for GDB, the GNU Debugger.
   2
   3    Copyright 2002, 2007, 2008, 2009, 2010 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 3 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, see <http://www.gnu.org/licenses/>.  */
  21
  22
  23
  24 #include <stdio.h>
  25 #include <stdarg.h>
  26 #include <ctype.h>
  27
  28 #include "config.h"
  29 #include "misc.h"
  30 #include "lf.h"
  31
  32 #ifdef HAVE_STDLIB_H
  33 #include <stdlib.h>
  34 #endif
  35
  36 #ifdef HAVE_STRING_H
  37 #include <string.h>
  38 #else
  39 #ifdef HAVE_STRINGS_H
  40 #include <strings.h>
  41 #endif
  42 #endif
  43
  44 struct _lf
  45 {
  46   FILE *stream;
  47   int line_nr;                  /* nr complete lines written, curr line is line_nr+1 */
  48   int indent;
  49   int line_blank;
  50   const char *name;
  51   const char *program;
  52   lf_file_references references;
  53   lf_file_type type;
  54 };
  55
  56
  57 lf *
  58 lf_open (char *name,
  59          char *real_name,
  60          lf_file_references references,
  61          lf_file_type type, const char *program)
  62 {
  63   /* create a file object */
  64   lf *new_lf = ZALLOC (lf);
  65   ASSERT (new_lf != NULL);
  66   new_lf->references = references;
  67   new_lf->type = type;
  68   new_lf->name = (real_name == NULL ? name : real_name);
  69   new_lf->program = program;
  70   /* attach to stdout if pipe */
  71   if (!strcmp (name, "-"))
  72     {
  73       new_lf->stream = stdout;
  74     }
  75   else
  76     {
  77       /* create a new file */
  78       new_lf->stream = fopen (name, "w");
  79       if (new_lf->stream == NULL)
  80         {
  81           perror (name);
  82           exit (1);
  83         }
  84     }
  85   return new_lf;
  86 }
  87
  88
  89 void
  90 lf_close (lf *file)
  91 {
  92   if (file->stream != stdout)
  93     {
  94       if (fclose (file->stream))
  95         {
  96           perror ("lf_close.fclose");
  97           exit (1);
  98         }
  99       free (file);
 100     }
 101 }
 102
 103
 104 int
 105 lf_putchr (lf *file, const char chr)
 106 {
 107   int nr = 0;
 108   if (chr == '\n')
 109     {
 110       file->line_nr += 1;
 111       file->line_blank = 1;
 112     }
 113   else if (file->line_blank)
 114     {
 115       int pad;
 116       for (pad = file->indent; pad > 0; pad--)
 117         putc (' ', file->stream);
 118       nr += file->indent;
 119       file->line_blank = 0;
 120     }
 121   putc (chr, file->stream);
 122   nr += 1;
 123   return nr;
 124 }
 125
 126 int
 127 lf_write (lf *file, const char *string, int strlen_string)
 128 {
 129   int nr = 0;
 130   int i;
 131   for (i = 0; i < strlen_string; i++)
 132     nr += lf_putchr (file, string[i]);
 133   return nr;
 134 }
 135
 136
 137 void
 138 lf_indent_suppress (lf *file)
 139 {
 140   file->line_blank = 0;
 141 }
 142
 143
 144 int
 145 lf_putstr (lf *file, const char *string)
 146 {
 147   int nr = 0;
 148   const char *chp;
 149   if (string != NULL)
 150     {
 151       for (chp = string; *chp != '\0'; chp++)
 152         {
 153           nr += lf_putchr (file, *chp);
 154         }
 155     }
 156   return nr;
 157 }
 158
 159 static int
 160 do_lf_putunsigned (lf *file, unsigned u)
 161 {
 162   int nr = 0;
 163   if (u > 0)
 164     {
 165       nr += do_lf_putunsigned (file, u / 10);
 166       nr += lf_putchr (file, (u % 10) + '0');
 167     }
 168   return nr;
 169 }
 170
 171
 172 int
 173 lf_putint (lf *file, int decimal)
 174 {
 175   int nr = 0;
 176   if (decimal == 0)
 177     nr += lf_putchr (file, '0');
 178   else if (decimal < 0)
 179     {
 180       nr += lf_putchr (file, '-');
 181       nr += do_lf_putunsigned (file, -decimal);
 182     }
 183   else if (decimal > 0)
 184     {
 185       nr += do_lf_putunsigned (file, decimal);
 186     }
 187   else
 188     ASSERT (0);
 189   return nr;
 190 }
 191
 192
 193 int
 194 lf_printf (lf *file, const char *fmt, ...)
 195 {
 196   int nr = 0;
 197   char buf[1024];
 198   va_list ap;
 199
 200   va_start (ap, fmt);
 201   vsprintf (buf, fmt, ap);
 202   /* FIXME - this is really stuffed but so is vsprintf() on a sun! */
 203   ASSERT (strlen (buf) < sizeof (buf));
 204   nr += lf_putstr (file, buf);
 205   va_end (ap);
 206   return nr;
 207 }
 208
 209
 210 int
 211 lf_print__line_ref (lf *file, line_ref *line)
 212 {
 213   return lf_print__external_ref (file, line->line_nr, line->file_name);
 214 }
 215
 216 int
 217 lf_print__external_ref (lf *file, int line_nr, const char *file_name)
 218 {
 219   int nr = 0;
 220   switch (file->references)
 221     {
 222     case lf_include_references:
 223       lf_indent_suppress (file);
 224       nr += lf_putstr (file, "#line ");
 225       nr += lf_putint (file, line_nr);
 226       nr += lf_putstr (file, " \"");
 227       nr += lf_putstr (file, file_name);
 228       nr += lf_putstr (file, "\"\n");
 229       break;
 230     case lf_omit_references:
 231       nr += lf_putstr (file, "/* ");
 232       nr += lf_putstr (file, file_name);
 233       nr += lf_putstr (file, ":");
 234       nr += lf_putint (file, line_nr);
 235       nr += lf_putstr (file, "*/\n");
 236       break;
 237     }
 238   return nr;
 239 }
 240
 241 int
 242 lf_print__internal_ref (lf *file)
 243 {
 244   int nr = 0;
 245   nr += lf_print__external_ref (file, file->line_nr + 2, file->name);
 246   /* line_nr == last_line, want to number from next */
 247   return nr;
 248 }
 249
 250 void
 251 lf_indent (lf *file, int delta)
 252 {
 253   file->indent += delta;
 254 }
 255
 256
 257 int
 258 lf_print__gnu_copyleft (lf *file)
 259 {
 260   int nr = 0;
 261   switch (file->type)
 262     {
 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, 2007 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 3 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, see <http://www.gnu.org/licenses/>.\n\
 282 \n\
 283    --\n\
 284 \n\
 285    This file was generated by the program %s */\n\
 286 ", filter_filename (file->program));
 287       break;
 288     default:
 289       ASSERT (0);
 290       break;
 291     }
 292   return nr;
 293 }
 294
 295
 296 int
 297 lf_putbin (lf *file, int decimal, int width)
 298 {
 299   int nr = 0;
 300   int bit;
 301   ASSERT (width > 0);
 302   for (bit = 1 << (width - 1); bit != 0; bit >>= 1)
 303     {
 304       if (decimal & bit)
 305         nr += lf_putchr (file, '1');
 306       else
 307         nr += lf_putchr (file, '0');
 308     }
 309   return nr;
 310 }
 311
 312 int
 313 lf_print__this_file_is_empty (lf *file, const char *reason)
 314 {
 315   int nr = 0;
 316   switch (file->type)
 317     {
 318     case lf_is_c:
 319     case lf_is_h:
 320       nr += lf_printf (file,
 321                        "/* This generated file (%s) is intentionally left blank",
 322                        file->name);
 323       if (reason != NULL)
 324         nr += lf_printf (file, " - %s", reason);
 325       nr += lf_printf (file, " */\n");
 326       break;
 327     default:
 328       ERROR ("Bad switch");
 329     }
 330   return nr;
 331 }
 332
 333 int
 334 lf_print__ucase_filename (lf *file)
 335 {
 336   int nr = 0;
 337   const char *chp = file->name;
 338   while (*chp != '\0')
 339     {
 340       char ch = *chp;
 341       if (islower (ch))
 342         {
 343           nr += lf_putchr (file, toupper (ch));
 344         }
 345       else if (ch == '.')
 346         nr += lf_putchr (file, '_');
 347       else
 348         nr += lf_putchr (file, ch);
 349       chp++;
 350     }
 351   return nr;
 352 }
 353
 354 int
 355 lf_print__file_start (lf *file)
 356 {
 357   int nr = 0;
 358   switch (file->type)
 359     {
 360     case lf_is_h:
 361     case lf_is_c:
 362       nr += lf_print__gnu_copyleft (file);
 363       nr += lf_printf (file, "\n");
 364       nr += lf_printf (file, "#ifndef ");
 365       nr += lf_print__ucase_filename (file);
 366       nr += lf_printf (file, "\n");
 367       nr += lf_printf (file, "#define ");
 368       nr += lf_print__ucase_filename (file);
 369       nr += lf_printf (file, "\n");
 370       nr += lf_printf (file, "\n");
 371       break;
 372     default:
 373       ASSERT (0);
 374     }
 375   return nr;
 376 }
 377
 378
 379 int
 380 lf_print__file_finish (lf *file)
 381 {
 382   int nr = 0;
 383   switch (file->type)
 384     {
 385     case lf_is_h:
 386     case lf_is_c:
 387       nr += lf_printf (file, "\n");
 388       nr += lf_printf (file, "#endif /* _");
 389       nr += lf_print__ucase_filename (file);
 390       nr += lf_printf (file, "_*/\n");
 391       break;
 392     default:
 393       ASSERT (0);
 394     }
 395   return nr;
 396 }
 397
 398
 399 int
 400 lf_print__function_type (lf *file,
 401                          const char *type,
 402                          const char *prefix, const char *trailing_space)
 403 {
 404   int nr = 0;
 405   nr += lf_printf (file, "%s\\\n(%s)", prefix, type);
 406   if (trailing_space != NULL)
 407     nr += lf_printf (file, "%s", trailing_space);
 408   return nr;
 409 }
 410
 411 int
 412 lf_print__function_type_function (lf *file,
 413                                   print_function * print_type,
 414                                   const char *prefix,
 415                                   const char *trailing_space)
 416 {
 417   int nr = 0;
 418   nr += lf_printf (file, "%s\\\n(", prefix);
 419   nr += print_type (file);
 420   nr += lf_printf (file, ")");
 421   if (trailing_space != NULL)
 422     nr += lf_printf (file, "%s", trailing_space);
 423   return nr;
 424 }