sim/testsuite/common/bits-gen.c

   1 /* Miscellaneous simulator utilities.
   2    Copyright (C) 1997 Free Software Foundation, Inc.
   3    Contributed by Cygnus Support.
   4
   5 This file is part of GDB, the GNU debugger.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License along
  18 with this program; if not, write to the Free Software Foundation, Inc.,
  19 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21
  22 #include <stdio.h>
  23
  24
  25 void
  26 gen_struct (void)
  27 {
  28   printf ("\n");
  29   printf ("typedef struct _test_tuples {\n");
  30   printf ("  int line;\n");
  31   printf ("  int row;\n");
  32   printf ("  int col;\n");
  33   printf ("  long long val;\n");
  34   printf ("  long long check;\n");
  35   printf ("} test_tuples;\n");
  36   printf ("\n");
  37   printf ("typedef struct _test_spec {\n");
  38   printf ("  const char *file;\n");
  39   printf ("  const char *macro;\n");
  40   printf ("  int nr_rows;\n");
  41   printf ("  int nr_cols;\n");
  42   printf ("  test_tuples *tuples;\n");
  43   printf ("} test_spec;\n");
  44 }
  45
  46
  47 void
  48 gen_bit (int bitsize,
  49          int msb,
  50          const char *macro,
  51          int nr_bits)
  52 {
  53   int i;
  54
  55   printf ("\n/* Test the %s macro */\n", macro);
  56   printf ("test_tuples %s_tuples[%d] = {\n", macro, nr_bits);
  57   for (i = 0; i < nr_bits; i++)
  58     {
  59       /* compute what we think the value is */
  60       unsigned long long bit = 1;
  61       if (msb == 0)
  62         bit <<= nr_bits - i - 1;
  63       else
  64         bit <<= i;
  65       if (bitsize == 32)
  66         bit = (unsigned) bit; /* truncate it! */
  67       /* write it out */
  68       printf ("  { __LINE__, ");
  69       printf ("%d, %2d, ", -1, i);
  70       printf ("%s (%2d), ", macro, i);
  71       printf ("UNSIGNED64 (0x%08lx%08lx), ",
  72               (long) (bit >> 32), (long) bit);
  73       printf ("},\n");
  74     }
  75   printf ("};\n");
  76   printf ("\n");
  77   printf ("test_spec %s_test = { __FILE__, \"%s\", 1, %d, %s_tuples, };\n",
  78           macro, macro, nr_bits, macro);
  79   printf ("\n");
  80 }
  81
  82
  83 void
  84 gen_enum (const char *macro,
  85           int nr_bits)
  86 {
  87   int i;
  88
  89   printf ("\n/* Test the %s macro in an enum */\n", macro);
  90   printf ("enum enum_%s {\n", macro);
  91   for (i = 0; i < nr_bits; i++)
  92     {
  93       printf ("  elem_%s_%d = %s (%d),\n", macro, i, macro, i);
  94     }
  95   printf ("};\n");
  96   printf ("\n");
  97 }
  98
  99
 100 void
 101 gen_mask (int bitsize,
 102           const char *msb,
 103           const char *macro,
 104           int nr_bits)
 105 {
 106   int l;
 107   int h;
 108   printf ("\n/* Test the %s%s macro */\n", msb, macro);
 109   printf ("test_tuples %s_tuples[%d][%d] = {\n", macro, nr_bits, nr_bits);
 110   for (l = 0; l < nr_bits; l++)
 111     {
 112       printf ("  {\n");
 113       for (h = 0; h < nr_bits; h++)
 114         {
 115           printf ("    { __LINE__, ");
 116           if ((strcmp (msb, "MS") == 0 && l <= h)
 117               || (strcmp (msb, "MS") != 0 && l >= h)
 118               || (strcmp (macro, "") == 0))
 119             {
 120               /* compute the mask */
 121               unsigned long long mask = 0;
 122               int b;
 123               for (b = 0; b < nr_bits; b++)
 124                 {
 125                   unsigned long long bit = 1;
 126                   if (strcmp (msb, "MS") == 0)
 127                     {
 128                       if ((l <= b && b <= h)
 129                           || (h < l && (b <= h || b >= l)))
 130                         bit <<= (nr_bits - b - 1);
 131                       else
 132                         bit = 0;
 133                     }
 134                   else
 135                     {
 136                       if ((l >= b && b >= h)
 137                           || (h > l && (b >= h || b <= l)))
 138                         bit <<= b;
 139                       else
 140                         bit = 0;
 141                     }
 142                   mask |= bit;
 143                 }
 144               if (bitsize == 32)
 145                 mask = (unsigned long) mask;
 146               printf ("%d, %d, ", l, h);
 147               printf ("%s%s (%2d, %2d), ", msb, macro, l, h);
 148               printf ("UNSIGNED64 (0x%08lx%08lx), ",
 149                       (long) (mask >> 32), (long) mask);
 150             }
 151           else
 152             printf ("-1, -1, ");
 153           printf ("},\n");
 154         }
 155       printf ("  },\n");
 156     }
 157   printf ("};\n");
 158   printf ("\n");
 159   printf ("test_spec %s_test = { __FILE__, \"%s%s\", %d, %d, &%s_tuples[0][0], };\n",
 160           macro, msb, macro, nr_bits, nr_bits, macro);
 161   printf ("\n");
 162 }
 163
 164
 165 void
 166 usage (int reason)
 167 {
 168   fprintf (stderr, "Usage:\n");
 169   fprintf (stderr, "  bits-gen <nr-bits> <msb> <byte-order>\n");
 170   fprintf (stderr, "Generate a test case for the simulator bit manipulation code\n");
 171   fprintf (stderr, "  <nr-bits> = { 32 | 64 }\n");
 172   fprintf (stderr, "  <msb> = { 0 | { 31 | 63 } }\n");
 173   fprintf (stderr, "  <byte-order> = { big | little }\n");
 174
 175   switch (reason)
 176     {
 177     case 1: fprintf (stderr, "Wrong number of arguments\n");
 178       break;
 179     case 2:
 180       fprintf (stderr, "Invalid <nr-bits> argument\n");
 181       break;
 182     case 3:
 183       fprintf (stderr, "Invalid <msb> argument\n");
 184       break;
 185     case 4:
 186       fprintf (stderr, "Invalid <byte-order> argument\n");
 187       break;
 188     default:
 189     }
 190
 191   exit (1);
 192 }
 193
 194
 195
 196 int
 197 main (argc, argv)
 198      int argc;
 199      char **argv;
 200 {
 201   int bitsize;
 202   int msb;
 203   char *ms;
 204   int big_endian;
 205
 206   if (argc != 4)
 207     usage (1);
 208
 209   if (strcmp (argv [1], "32") == 0)
 210     bitsize = 32;
 211   else if (strcmp (argv [1], "64") == 0)
 212     bitsize = 64;
 213   else
 214     usage (2);
 215
 216   if (strcmp (argv [2], "0") == 0)
 217     msb = 0;
 218   else if (strcmp (argv [2], "31") == 0 && bitsize == 32)
 219     msb = 31;
 220   else if (strcmp (argv [2], "63") == 0 && bitsize == 64)
 221     msb = 63;
 222   else
 223     usage (3);
 224   if (msb == 0)
 225     ms = "MS";
 226   else
 227     ms = "LS";
 228
 229   if (strcmp (argv [3], "big") == 0)
 230     big_endian = 1;
 231   else if (strcmp (argv [3], "little") == 0)
 232     big_endian = 0;
 233   else
 234     usage (4);
 235
 236   printf ("#define WITH_TARGET_WORD_BITSIZE %d\n", bitsize);
 237   printf ("#define WITH_TARGET_WORD_MSB %d\n", msb);
 238   printf ("#define WITH_HOST_WORD_BITSIZE %d\n", sizeof (int) * 8);
 239   printf ("#define WITH_TARGET_BYTE_ORDER %s\n", big_endian ? "BIG_ENDIAN" : "LITTLE_ENDIAN");
 240   printf ("\n");
 241   printf ("#define SIM_BITS_INLINE (ALL_H_INLINE)\n");
 242   printf ("\n");
 243   printf ("#define ASSERT(X) do { if (!(X)) abort(); } while (0)\n");
 244   printf ("\n");
 245   printf ("#include \"sim-basics.h\"\n");
 246
 247   gen_struct ();
 248
 249
 250
 251   printf ("#define DO_BIT_TESTS\n");
 252   gen_bit ( 4, msb, "BIT4",  4);
 253   gen_bit ( 5, msb, "BIT5",  5);
 254   gen_bit ( 8, msb, "BIT8",  8);
 255   gen_bit (10, msb, "BIT10", 10);
 256   gen_bit (16, msb, "BIT16", 16);
 257   gen_bit (32, msb, "BIT32", 32);
 258   gen_bit (64, msb, "BIT64", 64);
 259   gen_bit (bitsize, msb, "BIT", 64);
 260
 261   gen_bit ( 8,  8 - 1, "LSBIT8",   8);
 262   gen_bit (16, 16 - 1, "LSBIT16", 16);
 263   gen_bit (32, 32 - 1, "LSBIT32", 32);
 264   gen_bit (64, 64 - 1, "LSBIT64", 64);
 265   gen_bit (bitsize, bitsize - 1, "LSBIT",   64);
 266
 267   gen_bit ( 8,  0, "MSBIT8",   8);
 268   gen_bit (16,  0, "MSBIT16", 16);
 269   gen_bit (32,  0, "MSBIT32", 32);
 270   gen_bit (64,  0, "MSBIT64", 64);
 271   gen_bit (bitsize,  0, "MSBIT",   64);
 272
 273   printf ("test_spec *(bit_tests[]) = {\n");
 274   printf ("  &BIT4_test,\n");
 275   printf ("  &BIT5_test,\n");
 276   printf ("  &BIT8_test,\n");
 277   printf ("  &BIT10_test,\n");
 278   printf ("  &BIT16_test,\n");
 279   printf ("  &BIT32_test,\n");
 280   printf ("  &BIT64_test,\n");
 281   printf ("  &BIT_test,\n");
 282   printf ("  &LSBIT8_test,\n");
 283   printf ("  &LSBIT16_test,\n");
 284   printf ("  &LSBIT32_test,\n");
 285   printf ("  &LSBIT64_test,\n");
 286   printf ("  &LSBIT_test,\n");
 287   printf ("  &MSBIT8_test,\n");
 288   printf ("  &MSBIT16_test,\n");
 289   printf ("  &MSBIT32_test,\n");
 290   printf ("  &MSBIT64_test,\n");
 291   printf ("  &MSBIT_test,\n");
 292   printf ("  0,\n");
 293   printf ("};\n\n");
 294
 295   gen_enum ("BIT",   64);
 296   gen_enum ("LSBIT", 64);
 297   gen_enum ("MSBIT", 64);
 298   gen_enum ("BIT32",   32);
 299   gen_enum ("LSBIT32", 32);
 300   gen_enum ("MSBIT32", 32);
 301
 302   printf ("#define DO_MASK_TESTS\n");
 303   gen_mask ( 8, ms, "MASK8",  8);
 304   gen_mask (16, ms, "MASK16", 16);
 305   gen_mask (32, ms, "MASK32", 32);
 306   gen_mask (64, ms, "MASK64", 64);
 307   gen_mask (bitsize, ms, "MASK", 64);
 308
 309   printf ("test_spec *(mask_tests[]) = {\n");
 310   printf ("  &MASK8_test,\n");
 311   printf ("  &MASK16_test,\n");
 312   printf ("  &MASK32_test,\n");
 313   printf ("  &MASK64_test,\n");
 314   printf ("  &MASK_test,\n");
 315   printf ("  0,\n");
 316   printf ("};\n\n");
 317
 318   return 0;
 319 }