sim/common/sim-config.c

   1 /* The common simulator framework for GDB, the GNU Debugger.
   2
   3    Copyright 2002, 2007-2012 Free Software Foundation, Inc.
   4
   5    Contributed by Andrew Cagney and Red Hat.
   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 #include "sim-main.h"
  24 #include "sim-assert.h"
  25 #include "bfd.h"
  26
  27
  28 int current_host_byte_order;
  29 int current_target_byte_order;
  30 int current_stdio;
  31
  32 enum sim_alignments current_alignment;
  33
  34 #if defined (WITH_FLOATING_POINT)
  35 int current_floating_point;
  36 #endif
  37
  38
  39
  40 /* map a byte order onto a textual string */
  41
  42 static const char *
  43 config_byte_order_to_a (int byte_order)
  44 {
  45   switch (byte_order)
  46     {
  47     case LITTLE_ENDIAN:
  48       return "LITTLE_ENDIAN";
  49     case BIG_ENDIAN:
  50       return "BIG_ENDIAN";
  51     case 0:
  52       return "0";
  53     }
  54   return "UNKNOWN";
  55 }
  56
  57
  58 static const char *
  59 config_stdio_to_a (int stdio)
  60 {
  61   switch (stdio)
  62     {
  63     case DONT_USE_STDIO:
  64       return "DONT_USE_STDIO";
  65     case DO_USE_STDIO:
  66       return "DO_USE_STDIO";
  67     case 0:
  68       return "0";
  69     }
  70   return "UNKNOWN";
  71 }
  72
  73
  74 static const char *
  75 config_environment_to_a (enum sim_environment environment)
  76 {
  77   switch (environment)
  78     {
  79     case ALL_ENVIRONMENT:
  80       return "ALL_ENVIRONMENT";
  81     case USER_ENVIRONMENT:
  82       return "USER_ENVIRONMENT";
  83     case VIRTUAL_ENVIRONMENT:
  84       return "VIRTUAL_ENVIRONMENT";
  85     case OPERATING_ENVIRONMENT:
  86       return "OPERATING_ENVIRONMENT";
  87     }
  88   return "UNKNOWN";
  89 }
  90
  91
  92 static const char *
  93 config_alignment_to_a (enum sim_alignments alignment)
  94 {
  95   switch (alignment)
  96     {
  97     case MIXED_ALIGNMENT:
  98       return "MIXED_ALIGNMENT";
  99     case NONSTRICT_ALIGNMENT:
 100       return "NONSTRICT_ALIGNMENT";
 101     case STRICT_ALIGNMENT:
 102       return "STRICT_ALIGNMENT";
 103     case FORCED_ALIGNMENT:
 104       return "FORCED_ALIGNMENT";
 105     }
 106   return "UNKNOWN";
 107 }
 108
 109
 110 #if defined (WITH_FLOATING_POINT)
 111 static const char *
 112 config_floating_point_to_a (int floating_point)
 113 {
 114   switch (floating_point)
 115     {
 116     case SOFT_FLOATING_POINT:
 117       return "SOFT_FLOATING_POINT";
 118     case HARD_FLOATING_POINT:
 119       return "HARD_FLOATING_POINT";
 120     case 0:
 121       return "0";
 122     }
 123   return "UNKNOWN";
 124 }
 125 #endif
 126
 127 /* Set the default environment, prior to parsing argv.  */
 128
 129 void
 130 sim_config_default (SIM_DESC sd)
 131 {
 132    /* Set the current environment to ALL_ENVIRONMENT to indicate none has been
 133       selected yet.  This is so that after parsing argv, we know whether the
 134       environment was explicitly specified or not.  */
 135   STATE_ENVIRONMENT (sd) = ALL_ENVIRONMENT;
 136 }
 137
 138 /* Complete and verify the simulation environment.  */
 139
 140 SIM_RC
 141 sim_config (SIM_DESC sd)
 142 {
 143   int prefered_target_byte_order;
 144   SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
 145
 146   /* extract all relevant information */
 147   if (STATE_PROG_BFD (sd) == NULL
 148       /* If we have a binary input file (presumably with specified
 149          "--architecture"), it'll have no endianness.  */
 150       || (!bfd_little_endian (STATE_PROG_BFD (sd))
 151           && !bfd_big_endian (STATE_PROG_BFD (sd))))
 152     prefered_target_byte_order = 0;
 153   else
 154     prefered_target_byte_order = (bfd_little_endian (STATE_PROG_BFD (sd))
 155                                   ? LITTLE_ENDIAN
 156                                   : BIG_ENDIAN);
 157
 158   /* set the host byte order */
 159   current_host_byte_order = 1;
 160   if (*(char*)(&current_host_byte_order))
 161     current_host_byte_order = LITTLE_ENDIAN;
 162   else
 163     current_host_byte_order = BIG_ENDIAN;
 164
 165   /* verify the host byte order */
 166   if (CURRENT_HOST_BYTE_ORDER != current_host_byte_order)
 167     {
 168       sim_io_eprintf (sd, "host (%s) and configured (%s) byte order in conflict",
 169                       config_byte_order_to_a (current_host_byte_order),
 170                       config_byte_order_to_a (CURRENT_HOST_BYTE_ORDER));
 171       return SIM_RC_FAIL;
 172     }
 173
 174
 175   /* set the target byte order */
 176 #if (WITH_TREE_PROPERTIES)
 177   if (current_target_byte_order == 0)
 178     current_target_byte_order
 179       = (tree_find_boolean_property (root, "/options/little-endian?")
 180          ? LITTLE_ENDIAN
 181          : BIG_ENDIAN);
 182 #endif
 183   if (current_target_byte_order == 0
 184       && prefered_target_byte_order != 0)
 185     current_target_byte_order = prefered_target_byte_order;
 186   if (current_target_byte_order == 0)
 187     current_target_byte_order = WITH_TARGET_BYTE_ORDER;
 188   if (current_target_byte_order == 0)
 189     current_target_byte_order = WITH_DEFAULT_TARGET_BYTE_ORDER;
 190
 191   /* verify the target byte order */
 192   if (CURRENT_TARGET_BYTE_ORDER == 0)
 193     {
 194       sim_io_eprintf (sd, "Target byte order unspecified\n");
 195       return SIM_RC_FAIL;
 196     }
 197   if (CURRENT_TARGET_BYTE_ORDER != current_target_byte_order)
 198     sim_io_eprintf (sd, "Target (%s) and configured (%s) byte order in conflict\n",
 199                   config_byte_order_to_a (current_target_byte_order),
 200                   config_byte_order_to_a (CURRENT_TARGET_BYTE_ORDER));
 201   if (prefered_target_byte_order != 0
 202       && CURRENT_TARGET_BYTE_ORDER != prefered_target_byte_order)
 203     sim_io_eprintf (sd, "Target (%s) and specified (%s) byte order in conflict\n",
 204                   config_byte_order_to_a (CURRENT_TARGET_BYTE_ORDER),
 205                   config_byte_order_to_a (prefered_target_byte_order));
 206
 207
 208   /* set the stdio */
 209   if (current_stdio == 0)
 210     current_stdio = WITH_STDIO;
 211   if (current_stdio == 0)
 212     current_stdio = DO_USE_STDIO;
 213
 214   /* verify the stdio */
 215   if (CURRENT_STDIO == 0)
 216     {
 217       sim_io_eprintf (sd, "Target standard IO unspecified\n");
 218       return SIM_RC_FAIL;
 219     }
 220   if (CURRENT_STDIO != current_stdio)
 221     {
 222       sim_io_eprintf (sd, "Target (%s) and configured (%s) standard IO in conflict\n",
 223                       config_stdio_to_a (CURRENT_STDIO),
 224                       config_stdio_to_a (current_stdio));
 225       return SIM_RC_FAIL;
 226     }
 227
 228
 229   /* check the value of MSB */
 230   if (WITH_TARGET_WORD_MSB != 0
 231       && WITH_TARGET_WORD_MSB != (WITH_TARGET_WORD_BITSIZE - 1))
 232     {
 233       sim_io_eprintf (sd, "Target bitsize (%d) contradicts target most significant bit (%d)\n",
 234                       WITH_TARGET_WORD_BITSIZE, WITH_TARGET_WORD_MSB);
 235       return SIM_RC_FAIL;
 236     }
 237
 238
 239   /* set the environment */
 240 #if (WITH_TREE_PROPERTIES)
 241   if (STATE_ENVIRONMENT (sd) == ALL_ENVIRONMENT)
 242     {
 243       const char *env =
 244         tree_find_string_property (root, "/openprom/options/env");
 245       STATE_ENVIRONMENT (sd) = ((strcmp (env, "user") == 0
 246                                  || strcmp (env, "uea") == 0)
 247                                 ? USER_ENVIRONMENT
 248                                 : (strcmp (env, "virtual") == 0
 249                                    || strcmp (env, "vea") == 0)
 250                                 ? VIRTUAL_ENVIRONMENT
 251                                 : (strcmp (env, "operating") == 0
 252                                    || strcmp (env, "oea") == 0)
 253                                 ? OPERATING_ENVIRONMENT
 254                                 : ALL_ENVIRONMENT);
 255     }
 256 #endif
 257   if (STATE_ENVIRONMENT (sd) == ALL_ENVIRONMENT)
 258     STATE_ENVIRONMENT (sd) = DEFAULT_ENVIRONMENT;
 259
 260
 261   /* set the alignment */
 262 #if (WITH_TREE_PROPERTIES)
 263   if (current_alignment == 0)
 264     current_alignment =
 265       (tree_find_boolean_property (root, "/openprom/options/strict-alignment?")
 266        ? STRICT_ALIGNMENT
 267        : NONSTRICT_ALIGNMENT);
 268 #endif
 269   if (current_alignment == 0)
 270     current_alignment = WITH_ALIGNMENT;
 271   if (current_alignment == 0)
 272     current_alignment = WITH_DEFAULT_ALIGNMENT;
 273
 274   /* verify the alignment */
 275   if (CURRENT_ALIGNMENT == 0)
 276     {
 277       sim_io_eprintf (sd, "Target alignment unspecified\n");
 278       return SIM_RC_FAIL;
 279     }
 280   if (CURRENT_ALIGNMENT != current_alignment)
 281     {
 282       sim_io_eprintf (sd, "Target (%s) and configured (%s) alignment in conflict\n",
 283                       config_alignment_to_a (CURRENT_ALIGNMENT),
 284                       config_alignment_to_a (current_alignment));
 285       return SIM_RC_FAIL;
 286     }
 287
 288 #if defined (WITH_FLOATING_POINT)
 289
 290   /* set the floating point */
 291   if (current_floating_point == 0)
 292     current_floating_point = WITH_FLOATING_POINT;
 293
 294   /* verify the floating point */
 295   if (CURRENT_FLOATING_POINT == 0)
 296     {
 297       sim_io_eprintf (sd, "Target floating-point unspecified\n");
 298       return SIM_RC_FAIL;
 299     }
 300   if (CURRENT_FLOATING_POINT != current_floating_point)
 301     {
 302       sim_io_eprintf (sd, "Target (%s) and configured (%s) floating-point in conflict\n",
 303                       config_alignment_to_a (CURRENT_FLOATING_POINT),
 304                       config_alignment_to_a (current_floating_point));
 305       return SIM_RC_FAIL;
 306     }
 307
 308 #endif
 309   return SIM_RC_OK;
 310 }
 311
 312
 313 void
 314 print_sim_config (SIM_DESC sd)
 315 {
 316 #if defined (__GNUC__) && defined (__VERSION__)
 317   sim_io_printf (sd, "Compiled by GCC %s on %s %s\n",
 318                           __VERSION__, __DATE__, __TIME__);
 319 #else
 320   sim_io_printf (sd, "Compiled on %s %s\n", __DATE__, __TIME__);
 321 #endif
 322
 323   sim_io_printf (sd, "WITH_TARGET_BYTE_ORDER   = %s\n",
 324                  config_byte_order_to_a (WITH_TARGET_BYTE_ORDER));
 325
 326   sim_io_printf (sd, "WITH_DEFAULT_TARGET_BYTE_ORDER   = %s\n",
 327                  config_byte_order_to_a (WITH_DEFAULT_TARGET_BYTE_ORDER));
 328
 329   sim_io_printf (sd, "WITH_HOST_BYTE_ORDER     = %s\n",
 330                  config_byte_order_to_a (WITH_HOST_BYTE_ORDER));
 331
 332   sim_io_printf (sd, "WITH_STDIO               = %s\n",
 333                  config_stdio_to_a (WITH_STDIO));
 334
 335   sim_io_printf (sd, "WITH_TARGET_WORD_MSB     = %d\n",
 336                  WITH_TARGET_WORD_MSB);
 337
 338   sim_io_printf (sd, "WITH_TARGET_WORD_BITSIZE = %d\n",
 339                  WITH_TARGET_WORD_BITSIZE);
 340
 341   sim_io_printf (sd, "WITH_TARGET_ADDRESS_BITSIZE = %d\n",
 342                  WITH_TARGET_ADDRESS_BITSIZE);
 343
 344   sim_io_printf (sd, "WITH_TARGET_CELL_BITSIZE = %d\n",
 345                  WITH_TARGET_CELL_BITSIZE);
 346
 347   sim_io_printf (sd, "WITH_TARGET_FLOATING_POINT_BITSIZE = %d\n",
 348                  WITH_TARGET_FLOATING_POINT_BITSIZE);
 349
 350   sim_io_printf (sd, "WITH_ENVIRONMENT = %s\n",
 351                  config_environment_to_a (WITH_ENVIRONMENT));
 352
 353   sim_io_printf (sd, "WITH_ALIGNMENT = %s\n",
 354                  config_alignment_to_a (WITH_ALIGNMENT));
 355
 356 #if defined (WITH_DEFAULT_ALIGNMENT)
 357   sim_io_printf (sd, "WITH_DEFAULT_ALIGNMENT = %s\n",
 358                  config_alignment_to_a (WITH_DEFAULT_ALIGNMENT));
 359 #endif
 360
 361 #if defined (WITH_XOR_ENDIAN)
 362   sim_io_printf (sd, "WITH_XOR_ENDIAN = %d\n", WITH_XOR_ENDIAN);
 363 #endif
 364
 365 #if defined (WITH_FLOATING_POINT)
 366   sim_io_printf (sd, "WITH_FLOATING_POINT = %s\n",
 367                  config_floating_point_to_a (WITH_FLOATING_POINT));
 368 #endif
 369
 370 #if defined (WITH_SMP)
 371   sim_io_printf (sd, "WITH_SMP = %d\n", WITH_SMP);
 372 #endif
 373
 374 #if defined (WITH_RESERVED_BITS)
 375   sim_io_printf (sd, "WITH_RESERVED_BITS = %d\n", WITH_RESERVED_BITS);
 376 #endif
 377
 378 #if defined (WITH_PROFILE)
 379   sim_io_printf (sd, "WITH_PROFILE = %d\n", WITH_PROFILE);
 380 #endif
 381
 382 }