1 /* The common simulator framework for GDB, the GNU Debugger. 2 3 Copyright 2002-2014 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 #ifndef SIM_CONFIG_H 24 #define SIM_CONFIG_H 25 26 27 /* Host dependant: 28 29 The CPP below defines information about the compilation host. In 30 particular it defines the macro's: 31 32 WITH_HOST_BYTE_ORDER The byte order of the host. Could 33 be any of LITTLE_ENDIAN, BIG_ENDIAN 34 or 0 (unknown). Those macro's also 35 need to be defined. 36 37 */ 38 39 40 /* NetBSD: 41 42 NetBSD is easy, everything you could ever want is in a header file 43 (well almost :-) */ 44 45 #if defined(__NetBSD__) 46 # include <machine/endian.h> 47 # if (WITH_HOST_BYTE_ORDER == 0) 48 # undef WITH_HOST_BYTE_ORDER 49 # define WITH_HOST_BYTE_ORDER BYTE_ORDER 50 # endif 51 # if (BYTE_ORDER != WITH_HOST_BYTE_ORDER) 52 # error "host endian incorrectly configured, check config.h" 53 # endif 54 #endif 55 56 /* Linux is similarly easy. */ 57 58 #if defined(__linux__) 59 # include <endian.h> 60 # if defined(__LITTLE_ENDIAN) && !defined(LITTLE_ENDIAN) 61 # define LITTLE_ENDIAN __LITTLE_ENDIAN 62 # endif 63 # if defined(__BIG_ENDIAN) && !defined(BIG_ENDIAN) 64 # define BIG_ENDIAN __BIG_ENDIAN 65 # endif 66 # if defined(__BYTE_ORDER) && !defined(BYTE_ORDER) 67 # define BYTE_ORDER __BYTE_ORDER 68 # endif 69 # if (WITH_HOST_BYTE_ORDER == 0) 70 # undef WITH_HOST_BYTE_ORDER 71 # define WITH_HOST_BYTE_ORDER BYTE_ORDER 72 # endif 73 # if (BYTE_ORDER != WITH_HOST_BYTE_ORDER) 74 # error "host endian incorrectly configured, check config.h" 75 # endif 76 #endif 77 78 /* INSERT HERE - hosts that have available LITTLE_ENDIAN and 79 BIG_ENDIAN macro's */ 80 81 82 /* Some hosts don't define LITTLE_ENDIAN or BIG_ENDIAN, help them out */ 83 84 #ifndef LITTLE_ENDIAN 85 #define LITTLE_ENDIAN 1234 86 #endif 87 #ifndef BIG_ENDIAN 88 #define BIG_ENDIAN 4321 89 #endif 90 91 92 /* SunOS on SPARC: 93 94 Big endian last time I looked */ 95 96 #if defined(sparc) || defined(__sparc__) 97 # if (WITH_HOST_BYTE_ORDER == 0) 98 # undef WITH_HOST_BYTE_ORDER 99 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN 100 # endif 101 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN) 102 # error "sun was big endian last time I looked ..." 103 # endif 104 #endif 105 106 107 /* Random x86 108 109 Little endian last time I looked */ 110 111 #if defined(i386) || defined(i486) || defined(i586) || defined (i686) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined (__i686__) 112 # if (WITH_HOST_BYTE_ORDER == 0) 113 # undef WITH_HOST_BYTE_ORDER 114 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN 115 # endif 116 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN) 117 # error "x86 was little endian last time I looked ..." 118 # endif 119 #endif 120 121 #if (defined (__i486__) || defined (__i586__) || defined (__i686__)) && defined(__GNUC__) && WITH_BSWAP 122 #undef htonl 123 #undef ntohl 124 #define htonl(IN) __extension__ ({ int _out; __asm__ ("bswap %0" : "=r" (_out) : "0" (IN)); _out; }) 125 #define ntohl(IN) __extension__ ({ int _out; __asm__ ("bswap %0" : "=r" (_out) : "0" (IN)); _out; }) 126 #endif 127 128 /* Power or PowerPC running AIX */ 129 #if defined(_POWER) && defined(_AIX) 130 # if (WITH_HOST_BYTE_ORDER == 0) 131 # undef WITH_HOST_BYTE_ORDER 132 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN 133 # endif 134 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN) 135 # error "Power/PowerPC AIX was big endian last time I looked ..." 136 # endif 137 #endif 138 139 /* Solaris running PowerPC */ 140 #if defined(__PPC) && defined(__sun__) 141 # if (WITH_HOST_BYTE_ORDER == 0) 142 # undef WITH_HOST_BYTE_ORDER 143 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN 144 # endif 145 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN) 146 # error "Solaris on PowerPCs was little endian last time I looked ..." 147 # endif 148 #endif 149 150 /* HP/PA */ 151 #if defined(__hppa__) 152 # if (WITH_HOST_BYTE_ORDER == 0) 153 # undef WITH_HOST_BYTE_ORDER 154 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN 155 # endif 156 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN) 157 # error "HP/PA was big endian last time I looked ..." 158 # endif 159 #endif 160 161 /* Big endian MIPS */ 162 #if defined(__MIPSEB__) 163 # if (WITH_HOST_BYTE_ORDER == 0) 164 # undef WITH_HOST_BYTE_ORDER 165 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN 166 # endif 167 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN) 168 # error "MIPSEB was big endian last time I looked ..." 169 # endif 170 #endif 171 172 /* Little endian MIPS */ 173 #if defined(__MIPSEL__) 174 # if (WITH_HOST_BYTE_ORDER == 0) 175 # undef WITH_HOST_BYTE_ORDER 176 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN 177 # endif 178 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN) 179 # error "MIPSEL was little endian last time I looked ..." 180 # endif 181 #endif 182 183 /* Windows NT */ 184 #if defined(__WIN32__) 185 # if (WITH_HOST_BYTE_ORDER == 0) 186 # undef WITH_HOST_BYTE_ORDER 187 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN 188 # endif 189 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN) 190 # error "Windows NT was little endian last time I looked ..." 191 # endif 192 #endif 193 194 /* Alpha running DEC unix */ 195 #if defined(__osf__) && defined(__alpha__) 196 # if (WITH_HOST_BYTE_ORDER == 0) 197 # undef WITH_HOST_BYTE_ORDER 198 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN 199 # endif 200 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN) 201 # error "AXP running DEC unix was little endian last time I looked ..." 202 # endif 203 #endif 204 205 206 /* INSERT HERE - additional hosts that do not have LITTLE_ENDIAN and 207 BIG_ENDIAN definitions available. */ 208 209 /* Until devices and tree properties are sorted out, tell sim-config.c 210 not to call the tree_find_foo fns. */ 211 #define WITH_TREE_PROPERTIES 0 212 213 214 /* endianness of the host/target: 215 216 If the build process is aware (at compile time) of the endianness 217 of the host/target it is able to eliminate slower generic endian 218 handling code. 219 220 Possible values are 0 (unknown), LITTLE_ENDIAN, BIG_ENDIAN */ 221 222 #ifndef WITH_HOST_BYTE_ORDER 223 #define WITH_HOST_BYTE_ORDER 0 /*unknown*/ 224 #endif 225 226 #ifndef WITH_TARGET_BYTE_ORDER 227 #define WITH_TARGET_BYTE_ORDER 0 /*unknown*/ 228 #endif 229 230 #ifndef WITH_DEFAULT_TARGET_BYTE_ORDER 231 #define WITH_DEFAULT_TARGET_BYTE_ORDER 0 /* fatal */ 232 #endif 233 234 extern int current_host_byte_order; 235 #define CURRENT_HOST_BYTE_ORDER (WITH_HOST_BYTE_ORDER \ 236 ? WITH_HOST_BYTE_ORDER \ 237 : current_host_byte_order) 238 extern int current_target_byte_order; 239 #define CURRENT_TARGET_BYTE_ORDER (WITH_TARGET_BYTE_ORDER \ 240 ? WITH_TARGET_BYTE_ORDER \ 241 : current_target_byte_order) 242 243 244 245 /* XOR endian. 246 247 In addition to the above, the simulator can support the horrible 248 XOR endian mode (as found in the PowerPC and MIPS ISA). See 249 sim-core for more information. 250 251 If WITH_XOR_ENDIAN is non-zero, it specifies the number of bytes 252 potentially involved in the XOR munge. A typical value is 8. */ 253 254 #ifndef WITH_XOR_ENDIAN 255 #define WITH_XOR_ENDIAN 0 256 #endif 257 258 259 260 /* Intel host BSWAP support: 261 262 Whether to use bswap on the 486 and pentiums rather than the 386 263 sequence that uses xchgb/rorl/xchgb */ 264 #ifndef WITH_BSWAP 265 #define WITH_BSWAP 0 266 #endif 267 268 269 270 /* SMP support: 271 272 Sets a limit on the number of processors that can be simulated. If 273 WITH_SMP is set to zero (0), the simulator is restricted to 274 suporting only one processor (and as a consequence leaves the SMP 275 code out of the build process). 276 277 The actual number of processors is taken from the device 278 /options/smp@<nr-cpu> */ 279 280 #if defined (WITH_SMP) && (WITH_SMP > 0) 281 #define MAX_NR_PROCESSORS WITH_SMP 282 #endif 283 284 #ifndef MAX_NR_PROCESSORS 285 #define MAX_NR_PROCESSORS 1 286 #endif 287 288 289 /* Size of target word, address and OpenFirmware Cell: 290 291 The target word size is determined by the natural size of its 292 reginsters. 293 294 On most hosts, the address and cell are the same size as a target 295 word. */ 296 297 #ifndef WITH_TARGET_WORD_BITSIZE 298 #define WITH_TARGET_WORD_BITSIZE 32 299 #endif 300 301 #ifndef WITH_TARGET_ADDRESS_BITSIZE 302 #define WITH_TARGET_ADDRESS_BITSIZE WITH_TARGET_WORD_BITSIZE 303 #endif 304 305 #ifndef WITH_TARGET_CELL_BITSIZE 306 #define WITH_TARGET_CELL_BITSIZE WITH_TARGET_WORD_BITSIZE 307 #endif 308 309 #ifndef WITH_TARGET_FLOATING_POINT_BITSIZE 310 #define WITH_TARGET_FLOATING_POINT_BITSIZE 64 311 #endif 312 313 314 315 /* Most significant bit of target: 316 317 Set this according to your target's bit numbering convention. For 318 the PowerPC it is zero, for many other targets it is 31 or 63. 319 320 For targets that can both have either 32 or 64 bit words and number 321 MSB as 31, 63. Define this to be (WITH_TARGET_WORD_BITSIZE - 1) */ 322 323 #ifndef WITH_TARGET_WORD_MSB 324 #define WITH_TARGET_WORD_MSB 0 325 #endif 326 327 328 329 /* Program environment: 330 331 Three environments are available - UEA (user), VEA (virtual) and 332 OEA (perating). The former two are environment that users would 333 expect to see (VEA includes things like coherency and the time 334 base) while OEA is what an operating system expects to see. By 335 setting these to specific values, the build process is able to 336 eliminate non relevent environment code. 337 338 STATE_ENVIRONMENT(sd) specifies which of vea or oea is required for 339 the current runtime. 340 341 ALL_ENVIRONMENT is used during configuration as a value for 342 WITH_ENVIRONMENT to indicate the choice is runtime selectable. 343 The default is then USER_ENVIRONMENT [since allowing the user to choose 344 the default at configure time seems like featuritis and since people using 345 OPERATING_ENVIRONMENT have more to worry about than selecting the 346 default]. 347 ALL_ENVIRONMENT is also used to set STATE_ENVIRONMENT to the 348 "uninitialized" state. */ 349 350 enum sim_environment { 351 ALL_ENVIRONMENT, 352 USER_ENVIRONMENT, 353 VIRTUAL_ENVIRONMENT, 354 OPERATING_ENVIRONMENT 355 }; 356 357 /* If the simulator specified SIM_AC_OPTION_ENVIRONMENT, indicate so. */ 358 #ifdef WITH_ENVIRONMENT 359 #define SIM_HAVE_ENVIRONMENT 360 #endif 361 362 /* If the simulator doesn't specify SIM_AC_OPTION_ENVIRONMENT in its 363 configure.in, the only supported environment is the user environment. */ 364 #ifndef WITH_ENVIRONMENT 365 #define WITH_ENVIRONMENT USER_ENVIRONMENT 366 #endif 367 368 #define DEFAULT_ENVIRONMENT (WITH_ENVIRONMENT != ALL_ENVIRONMENT \ 369 ? WITH_ENVIRONMENT \ 370 : USER_ENVIRONMENT) 371 372 /* To be prepended to simulator calls with absolute file paths and 373 chdir:ed at startup. */ 374 extern char *simulator_sysroot; 375 376 /* Callback & Modulo Memory. 377 378 Core includes a builtin memory type (raw_memory) that is 379 implemented using an array. raw_memory does not require any 380 additional functions etc. 381 382 Callback memory is where the core calls a core device for the data 383 it requires. Callback memory can be layered using priorities. 384 385 Modulo memory is a variation on raw_memory where ADDRESS & (MODULO 386 - 1) is used as the index into the memory array. 387 388 The OEA model uses callback memory for devices. 389 390 The VEA model uses callback memory to capture `page faults'. 391 392 BTW, while raw_memory could have been implemented as a callback, 393 profiling has shown that there is a biger win (at least for the 394 x86) in eliminating a function call for the most common 395 (raw_memory) case. */ 396 397 #ifndef WITH_CALLBACK_MEMORY 398 #define WITH_CALLBACK_MEMORY 1 399 #endif 400 401 #ifndef WITH_MODULO_MEMORY 402 #define WITH_MODULO_MEMORY 0 403 #endif 404 405 406 407 /* Alignment: 408 409 A processor architecture may or may not handle miss aligned 410 transfers. 411 412 As alternatives: both little and big endian modes take an exception 413 (STRICT_ALIGNMENT); big and little endian models handle mis aligned 414 transfers (NONSTRICT_ALIGNMENT); or the address is forced into 415 alignment using a mask (FORCED_ALIGNMENT). 416 417 Mixed alignment should be specified when the simulator needs to be 418 able to change the alignment requirements on the fly (eg for 419 bi-endian support). */ 420 421 enum sim_alignments { 422 MIXED_ALIGNMENT, 423 NONSTRICT_ALIGNMENT, 424 STRICT_ALIGNMENT, 425 FORCED_ALIGNMENT, 426 }; 427 428 extern enum sim_alignments current_alignment; 429 430 #if !defined (WITH_ALIGNMENT) 431 #define WITH_ALIGNMENT 0 432 #endif 433 434 #if !defined (WITH_DEFAULT_ALIGNMENT) 435 #define WITH_DEFAULT_ALIGNMENT 0 /* fatal */ 436 #endif 437 438 439 440 441 #define CURRENT_ALIGNMENT (WITH_ALIGNMENT \ 442 ? WITH_ALIGNMENT \ 443 : current_alignment) 444 445 446 447 /* Floating point suport: 448 449 Should the processor trap for all floating point instructions (as 450 if the hardware wasn't implemented) or implement the floating point 451 instructions directly. */ 452 453 #if defined (WITH_FLOATING_POINT) 454 455 #define SOFT_FLOATING_POINT 1 456 #define HARD_FLOATING_POINT 2 457 458 extern int current_floating_point; 459 #define CURRENT_FLOATING_POINT (WITH_FLOATING_POINT \ 460 ? WITH_FLOATING_POINT \ 461 : current_floating_point) 462 463 #endif 464 465 466 467 /* Engine module. 468 469 Use the common start/stop/restart framework (sim-engine). 470 Simulators using the other modules but not the engine should define 471 WITH_ENGINE=0. */ 472 473 #ifndef WITH_ENGINE 474 #define WITH_ENGINE 1 475 #endif 476 477 478 479 /* Debugging: 480 481 Control the inclusion of debugging code. 482 Debugging is only turned on in rare circumstances [say during development] 483 and is not intended to be turned on otherwise. */ 484 485 #ifndef WITH_DEBUG 486 #define WITH_DEBUG 0 487 #endif 488 489 /* Include the tracing code. Disabling this eliminates all tracing 490 code */ 491 492 #ifndef WITH_TRACE 493 #define WITH_TRACE (-1) 494 #endif 495 496 /* Include the profiling code. Disabling this eliminates all profiling 497 code. */ 498 499 #ifndef WITH_PROFILE 500 #define WITH_PROFILE (-1) 501 #endif 502 503 504 /* include code that checks assertions scattered through out the 505 program */ 506 507 #ifndef WITH_ASSERT 508 #define WITH_ASSERT 1 509 #endif 510 511 512 /* Whether to check instructions for reserved bits being set */ 513 514 /* #define WITH_RESERVED_BITS 1 */ 515 516 517 518 /* include monitoring code */ 519 520 #define MONITOR_INSTRUCTION_ISSUE 1 521 #define MONITOR_LOAD_STORE_UNIT 2 522 /* do not define WITH_MON by default */ 523 #define DEFAULT_WITH_MON (MONITOR_LOAD_STORE_UNIT \ 524 | MONITOR_INSTRUCTION_ISSUE) 525 526 527 /* Current CPU model (models are in the generated models.h include file) */ 528 #ifndef WITH_MODEL 529 #define WITH_MODEL 0 530 #endif 531 532 #define CURRENT_MODEL (WITH_MODEL \ 533 ? WITH_MODEL \ 534 : current_model) 535 536 #ifndef WITH_DEFAULT_MODEL 537 #define WITH_DEFAULT_MODEL DEFAULT_MODEL 538 #endif 539 540 #define MODEL_ISSUE_IGNORE (-1) 541 #define MODEL_ISSUE_PROCESS 1 542 543 #ifndef WITH_MODEL_ISSUE 544 #define WITH_MODEL_ISSUE 0 545 #endif 546 547 extern int current_model_issue; 548 #define CURRENT_MODEL_ISSUE (WITH_MODEL_ISSUE \ 549 ? WITH_MODEL_ISSUE \ 550 : current_model_issue) 551 552 553 554 /* Whether or not input/output just uses stdio, or uses printf_filtered for 555 output, and polling input for input. */ 556 557 #define DONT_USE_STDIO 2 558 #define DO_USE_STDIO 1 559 560 #ifndef WITH_STDIO 561 #define WITH_STDIO 0 562 #endif 563 564 extern int current_stdio; 565 #define CURRENT_STDIO (WITH_STDIO \ 566 ? WITH_STDIO \ 567 : current_stdio) 568 569 570 571 /* Specify that configured calls pass parameters in registers when the 572 convention is that they are placed on the stack */ 573 574 #ifndef WITH_REGPARM 575 #define WITH_REGPARM 0 576 #endif 577 578 /* Specify that configured calls use an alternative calling mechanism */ 579 580 #ifndef WITH_STDCALL 581 #define WITH_STDCALL 0 582 #endif 583 584 585 /* Set the default state configuration, before parsing argv. */ 586 587 extern void sim_config_default (SIM_DESC sd); 588 589 /* Complete and verify the simulator configuration. */ 590 591 extern SIM_RC sim_config (SIM_DESC sd); 592 593 /* Print the simulator configuration. */ 594 595 extern void print_sim_config (SIM_DESC sd); 596 597 598 #endif 599