sim/common/sim-config.c

   1 /* The common simulator framework for GDB, the GNU Debugger.
   2
   3    Copyright 2002, 2007 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 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 #include "sim-main.h"
  26 #include "sim-assert.h"
  27 #include "bfd.h"
  28
  29
  30 int current_host_byte_order;
  31 int current_target_byte_order;
  32 int current_stdio;
  33
  34 enum sim_alignments current_alignment;
  35
  36 #if defined (WITH_FLOATING_POINT)
  37 int current_floating_point;
  38 #endif
  39
  40
  41
  42 /* map a byte order onto a textual string */
  43
  44 static const char *
  45 config_byte_order_to_a (int byte_order)
  46 {
  47   switch (byte_order)
  48     {
  49     case LITTLE_ENDIAN:
  50       return "LITTLE_ENDIAN";
  51     case BIG_ENDIAN:
  52       return "BIG_ENDIAN";
  53     case 0:
  54       return "0";
  55     }
  56   return "UNKNOWN";
  57 }
  58
  59
  60 static const char *
  61 config_stdio_to_a (int stdio)
  62 {
  63   switch (stdio)
  64     {
  65     case DONT_USE_STDIO:
  66       return "DONT_USE_STDIO";
  67     case DO_USE_STDIO:
  68       return "DO_USE_STDIO";
  69     case 0:
  70       return "0";
  71     }
  72   return "UNKNOWN";
  73 }
  74
  75
  76 static const char *
  77 config_environment_to_a (enum sim_environment environment)
  78 {
  79   switch (environment)
  80     {
  81     case ALL_ENVIRONMENT:
  82       return "ALL_ENVIRONMENT";
  83     case USER_ENVIRONMENT:
  84       return "USER_ENVIRONMENT";
  85     case VIRTUAL_ENVIRONMENT:
  86       return "VIRTUAL_ENVIRONMENT";
  87     case OPERATING_ENVIRONMENT:
  88       return "OPERATING_ENVIRONMENT";
  89     }
  90   return "UNKNOWN";
  91 }
  92
  93
  94 static const char *
  95 config_alignment_to_a (enum sim_alignments alignment)
  96 {
  97   switch (alignment)
  98     {
  99     case MIXED_ALIGNMENT:
 100       return "MIXED_ALIGNMENT";
 101     case NONSTRICT_ALIGNMENT:
 102       return "NONSTRICT_ALIGNMENT";
 103     case STRICT_ALIGNMENT:
 104       return "STRICT_ALIGNMENT";
 105     case FORCED_ALIGNMENT:
 106       return "FORCED_ALIGNMENT";
 107     }
 108   return "UNKNOWN";
 109 }
 110
 111
 112 #if defined (WITH_FLOATING_POINT)
 113 static const char *
 114 config_floating_point_to_a (int floating_point)
 115 {
 116   switch (floating_point)
 117     {
 118     case SOFT_FLOATING_POINT:
 119       return "SOFT_FLOATING_POINT";
 120     case HARD_FLOATING_POINT:
 121       return "HARD_FLOATING_POINT";
 122     case 0:
 123       return "0";
 124     }
 125   return "UNKNOWN";
 126 }
 127 #endif
 128
 129 /* Set the default environment, prior to parsing argv.  */
 130
 131 void
 132 sim_config_default (SIM_DESC sd)
 133 {
 134    /* Set the current environment to ALL_ENVIRONMENT to indicate none has been
 135       selected yet.  This is so that after parsing argv, we know whether the
 136       environment was explicitly specified or not.  */
 137   STATE_ENVIRONMENT (sd) = ALL_ENVIRONMENT;
 138 }
 139
 140 /* Complete and verify the simulation environment.  */
 141
 142 SIM_RC
 143 sim_config (SIM_DESC sd)
 144 {
 145   int prefered_target_byte_order;
 146   SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
 147
 148   /* extract all relevant information */
 149   if (STATE_PROG_BFD (sd) == NULL
 150       /* If we have a binary input file (presumably with specified
 151          "--architecture"), it'll have no endianness.  */
 152       || (!bfd_little_endian (STATE_PROG_BFD (sd))
 153           && !bfd_big_endian (STATE_PROG_BFD (sd))))
 154     prefered_target_byte_order = 0;
 155   else
 156     prefered_target_byte_order = (bfd_little_endian(STATE_PROG_BFD (sd))
 157                                   ? LITTLE_ENDIAN
 158                                   : BIG_ENDIAN);
 159
 160   /* set the host byte order */
 161   current_host_byte_order = 1;
 162   if (*(char*)(&current_host_byte_order))
 163     current_host_byte_order = LITTLE_ENDIAN;
 164   else
 165     current_host_byte_order = BIG_ENDIAN;
 166
 167   /* verify the host byte order */
 168   if (CURRENT_HOST_BYTE_ORDER != current_host_byte_order)
 169     {
 170       sim_io_eprintf (sd, "host (%s) and configured (%s) byte order in conflict",
 171                       config_byte_order_to_a (current_host_byte_order),
 172                       config_byte_order_to_a (CURRENT_HOST_BYTE_ORDER));
 173       return SIM_RC_FAIL;
 174     }
 175
 176
 177   /* set the target byte order */
 178 #if (WITH_TREE_PROPERTIES)
 179   if (current_target_byte_order == 0)
 180     current_target_byte_order
 181       = (tree_find_boolean_property (root, "/options/little-endian?")
 182          ? LITTLE_ENDIAN
 183          : BIG_ENDIAN);
 184 #endif
 185   if (current_target_byte_order == 0
 186       && prefered_target_byte_order != 0)
 187     current_target_byte_order = prefered_target_byte_order;
 188   if (current_target_byte_order == 0)
 189     current_target_byte_order = WITH_TARGET_BYTE_ORDER;
 190   if (current_target_byte_order == 0)
 191     current_target_byte_order = WITH_DEFAULT_TARGET_BYTE_ORDER;
 192
 193   /* verify the target byte order */
 194   if (CURRENT_TARGET_BYTE_ORDER == 0)
 195     {
 196       sim_io_eprintf (sd, "Target byte order unspecified\n");
 197       return SIM_RC_FAIL;
 198     }
 199   if (CURRENT_TARGET_BYTE_ORDER != current_target_byte_order)
 200     sim_io_eprintf (sd, "Target (%s) and configured (%s) byte order in conflict\n",
 201                   config_byte_order_to_a (current_target_byte_order),
 202                   config_byte_order_to_a (CURRENT_TARGET_BYTE_ORDER));
 203   if (prefered_target_byte_order != 0
 204       && CURRENT_TARGET_BYTE_ORDER != prefered_target_byte_order)
 205     sim_io_eprintf (sd, "Target (%s) and specified (%s) byte order in conflict\n",
 206                   config_byte_order_to_a (CURRENT_TARGET_BYTE_ORDER),
 207                   config_byte_order_to_a (prefered_target_byte_order));
 208
 209
 210   /* set the stdio */
 211   if (current_stdio == 0)
 212     current_stdio = WITH_STDIO;
 213   if (current_stdio == 0)
 214     current_stdio = DO_USE_STDIO;
 215
 216   /* verify the stdio */
 217   if (CURRENT_STDIO == 0)
 218     {
 219       sim_io_eprintf (sd, "Target standard IO unspecified\n");
 220       return SIM_RC_FAIL;
 221     }
 222   if (CURRENT_STDIO != current_stdio)
 223     {
 224       sim_io_eprintf (sd, "Target (%s) and configured (%s) standard IO in conflict\n",
 225                       config_stdio_to_a (CURRENT_STDIO),
 226                       config_stdio_to_a (current_stdio));
 227       return SIM_RC_FAIL;
 228     }
 229
 230
 231   /* check the value of MSB */
 232   if (WITH_TARGET_WORD_MSB != 0
 233       && WITH_TARGET_WORD_MSB != (WITH_TARGET_WORD_BITSIZE - 1))
 234     {
 235       sim_io_eprintf (sd, "Target bitsize (%d) contradicts target most significant bit (%d)\n",
 236                       WITH_TARGET_WORD_BITSIZE, WITH_TARGET_WORD_MSB);
 237       return SIM_RC_FAIL;
 238     }
 239
 240
 241   /* set the environment */
 242 #if (WITH_TREE_PROPERTIES)
 243   if (STATE_ENVIRONMENT (sd) == ALL_ENVIRONMENT)
 244     {
 245       const char *env =
 246         tree_find_string_property(root, "/openprom/options/env");
 247       STATE_ENVIRONMENT (sd) = ((strcmp(env, "user") == 0
 248                                  || strcmp(env, "uea") == 0)
 249                                 ? USER_ENVIRONMENT
 250                                 : (strcmp(env, "virtual") == 0
 251                                    || strcmp(env, "vea") == 0)
 252                                 ? VIRTUAL_ENVIRONMENT
 253                                 : (strcmp(env, "operating") == 0
 254                                    || strcmp(env, "oea") == 0)
 255                                 ? OPERATING_ENVIRONMENT
 256                                 : ALL_ENVIRONMENT);
 257     }
 258 #endif
 259   if (STATE_ENVIRONMENT (sd) == ALL_ENVIRONMENT)
 260     STATE_ENVIRONMENT (sd) = DEFAULT_ENVIRONMENT;
 261
 262
 263   /* set the alignment */
 264 #if (WITH_TREE_PROPERTIES)
 265   if (current_alignment == 0)
 266     current_alignment =
 267       (tree_find_boolean_property(root, "/openprom/options/strict-alignment?")
 268        ? STRICT_ALIGNMENT
 269        : NONSTRICT_ALIGNMENT);
 270 #endif
 271   if (current_alignment == 0)
 272     current_alignment = WITH_ALIGNMENT;
 273   if (current_alignment == 0)
 274     current_alignment = WITH_DEFAULT_ALIGNMENT;
 275
 276   /* verify the alignment */
 277   if (CURRENT_ALIGNMENT == 0)
 278     {
 279       sim_io_eprintf (sd, "Target alignment unspecified\n");
 280       return SIM_RC_FAIL;
 281     }
 282   if (CURRENT_ALIGNMENT != current_alignment)
 283     {
 284       sim_io_eprintf (sd, "Target (%s) and configured (%s) alignment in conflict\n",
 285                       config_alignment_to_a (CURRENT_ALIGNMENT),
 286                       config_alignment_to_a (current_alignment));
 287       return SIM_RC_FAIL;
 288     }
 289
 290 #if defined (WITH_FLOATING_POINT)
 291
 292   /* set the floating point */
 293   if (current_floating_point == 0)
 294     current_floating_point = WITH_FLOATING_POINT;
 295
 296   /* verify the floating point */
 297   if (CURRENT_FLOATING_POINT == 0)
 298     {
 299       sim_io_eprintf (sd, "Target floating-point unspecified\n");
 300       return SIM_RC_FAIL;
 301     }
 302   if (CURRENT_FLOATING_POINT != current_floating_point)
 303     {
 304       sim_io_eprintf (sd, "Target (%s) and configured (%s) floating-point in conflict\n",
 305                       config_alignment_to_a (CURRENT_FLOATING_POINT),
 306                       config_alignment_to_a (current_floating_point));
 307       return SIM_RC_FAIL;
 308     }
 309
 310 #endif
 311   return SIM_RC_OK;
 312 }
 313
 314
 315 void
 316 print_sim_config (SIM_DESC sd)
 317 {
 318 #if defined (__GNUC__) && defined (__VERSION__)
 319   sim_io_printf (sd, "Compiled by GCC %s on %s %s\n",
 320                           __VERSION__, __DATE__, __TIME__);
 321 #else
 322   sim_io_printf (sd, "Compiled on %s %s\n", __DATE__, __TIME__);
 323 #endif
 324
 325   sim_io_printf (sd, "WITH_TARGET_BYTE_ORDER   = %s\n",
 326                  config_byte_order_to_a (WITH_TARGET_BYTE_ORDER));
 327
 328   sim_io_printf (sd, "WITH_DEFAULT_TARGET_BYTE_ORDER   = %s\n",
 329                  config_byte_order_to_a (WITH_DEFAULT_TARGET_BYTE_ORDER));
 330
 331   sim_io_printf (sd, "WITH_HOST_BYTE_ORDER     = %s\n",
 332                  config_byte_order_to_a (WITH_HOST_BYTE_ORDER));
 333
 334   sim_io_printf (sd, "WITH_STDIO               = %s\n",
 335                  config_stdio_to_a (WITH_STDIO));
 336
 337   sim_io_printf (sd, "WITH_TARGET_WORD_MSB     = %d\n",
 338                  WITH_TARGET_WORD_MSB);
 339
 340   sim_io_printf (sd, "WITH_TARGET_WORD_BITSIZE = %d\n",
 341                  WITH_TARGET_WORD_BITSIZE);
 342
 343   sim_io_printf (sd, "WITH_TARGET_ADDRESS_BITSIZE = %d\n",
 344                  WITH_TARGET_ADDRESS_BITSIZE);
 345
 346   sim_io_printf (sd, "WITH_TARGET_CELL_BITSIZE = %d\n",
 347                  WITH_TARGET_CELL_BITSIZE);
 348
 349   sim_io_printf (sd, "WITH_TARGET_FLOATING_POINT_BITSIZE = %d\n",
 350                  WITH_TARGET_FLOATING_POINT_BITSIZE);
 351
 352   sim_io_printf (sd, "WITH_ENVIRONMENT = %s\n",
 353                  config_environment_to_a (WITH_ENVIRONMENT));
 354
 355   sim_io_printf (sd, "WITH_ALIGNMENT = %s\n",
 356                  config_alignment_to_a (WITH_ALIGNMENT));
 357
 358 #if defined (WITH_DEFAULT_ALIGNMENT)
 359   sim_io_printf (sd, "WITH_DEFAULT_ALIGNMENT = %s\n",
 360                  config_alignment_to_a (WITH_DEFAULT_ALIGNMENT));
 361 #endif
 362
 363 #if defined (WITH_XOR_ENDIAN)
 364   sim_io_printf (sd, "WITH_XOR_ENDIAN = %d\n", WITH_XOR_ENDIAN);
 365 #endif
 366
 367 #if defined (WITH_FLOATING_POINT)
 368   sim_io_printf (sd, "WITH_FLOATING_POINT = %s\n",
 369                  config_floating_point_to_a (WITH_FLOATING_POINT));
 370 #endif
 371
 372 #if defined (WITH_SMP)
 373   sim_io_printf (sd, "WITH_SMP = %d\n", WITH_SMP);
 374 #endif
 375
 376 #if defined (WITH_RESERVED_BITS)
 377   sim_io_printf (sd, "WITH_RESERVED_BITS = %d\n", WITH_RESERVED_BITS);
 378 #endif
 379
 380 #if defined (WITH_PROFILE)
 381   sim_io_printf (sd, "WITH_PROFILE = %d\n", WITH_PROFILE);
 382 #endif
 383
 384 }