sim/mips/ChangeLog

   1 Tue Aug 26 10:40:07 1997  Andrew Cagney  <cagney@b1.cygnus.com>
   2
   3         * interp.c (sim_kill): Delete.
   4
   5 Mon Aug 25 17:50:22 1997  Andrew Cagney  <cagney@b1.cygnus.com>
   6
   7         * configure: Regenerated to track ../common/aclocal.m4 changes.
   8         * config.in: Ditto.
   9
  10 Mon Aug 25 15:59:48 1997  Andrew Cagney  <cagney@b1.cygnus.com>
  11
  12         * interp.c (sim_open): Add ABFD argument.
  13         (sim_load): Move call to sim_config from here.
  14         (sim_open): To here.  Check return status.
  15
  16 start-sanitize-r5900
  17         * gencode.c (build_instruction): Do not define x8000000000000000,
  18         x7FFFFFFFFFFFFFFF, or xFFFFFFFF80000000.
  19
  20 end-sanitize-r5900
  21 start-sanitize-r5900
  22 Mon Jul 28 19:49:29 1997  Andrew Cagney  <cagney@b1.cygnus.com>
  23
  24         * gencode.c (build_instruction): For "pdivw", "pdivbw" and
  25         "pdivuw" check for overflow due to signed divide by -1.
  26
  27 end-sanitize-r5900
  28 Fri Jul 25 15:00:45 1997  Gavin Koch  <gavin@cygnus.com>
  29
  30         * gencode.c (build_instruction): Two arg MADD should
  31         not assign result to $0.
  32
  33 start-sanitize-r5900
  34 Thu Jul 10 11:58:48 1997  Andrew Cagney  <cagney@critters.cygnus.com>
  35
  36         * gencode.c (build_instruction): For "ppac5" use unsigned
  37         arrithmetic so that the sign bit doesn't smear when right shifted.
  38         (build_instruction): For "pdiv" perform sign extension when
  39         storing results in HI and LO.
  40         (build_instructions): For "pdiv" and "pdivbw" check for
  41         divide-by-zero.
  42         (build_instruction): For "pmfhl.slw" update hi part of dest
  43         register as well as low part.
  44         (build_instruction): For "pmfhl" portably handle long long values.
  45         (build_instruction): For "pmfhl.sh" correctly negative values.
  46         Store half words 2 and three in the correct place.
  47         (build_instruction): For "psllvw", sign extend value after shift.
  48
  49 end-sanitize-r5900
  50 Thu Jun 26 12:13:17 1997  Angela Marie Thomas (angela@cygnus.com)
  51
  52         * sim/mips/configure: Change default_sim_endian to 0 (bi-endian)
  53         * sim/mips/configure.in: Regenerate.
  54
  55 Wed Jul  9 10:29:21 1997  Andrew Cagney  <cagney@critters.cygnus.com>
  56
  57         * interp.c (SUB_REG_UW, SUB_REG_SW, SUB_REG_*): Use more explicit
  58         signed8, unsigned8 et.al. types.
  59
  60 start-sanitize-r5900
  61         * gencode.c (build_instruction): For PMULTU* do not sign extend
  62         registers.  Make generated code easier to debug.
  63
  64 end-sanitize-r5900
  65         * interp.c (SUB_REG_FETCH): Handle both little and big endian
  66         hosts when selecting subreg.
  67
  68 start-sanitize-r5900
  69 Tue Jul  8 18:07:20 1997  Andrew Cagney  <cagney@andros.cygnus.com>
  70
  71         * gencode.c (type_for_data_len): For 32bit operations concerned
  72         with overflow, perform op using 64bits.
  73         (build_instruction): For PADD, always compute operation using type
  74         returned by type_for_data_len.
  75         (build_instruction): For PSUBU, when overflow, saturate to zero as
  76         actually underflow.
  77
  78 end-sanitize-r5900
  79 Wed Jul  2 11:54:10 1997  Jeffrey A Law  (law@cygnus.com)
  80
  81 start-sanitize-r5900
  82         * gencode.c (build_instruction): Handle "pext5" according to
  83         version 1.95 of the r5900 ISA.
  84
  85         * gencode.c (build_instruction): Handle "ppac5" according to
  86         version 1.95 of the r5900 ISA.
  87
  88 end-sanitize-r5900
  89         * interp.c (sim_engine_run): Reset the ZERO register to zero
  90         regardless of FEATURE_WARN_ZERO.
  91         * gencode.c (FEATURE_WARNINGS): Remove FEATURE_WARN_ZERO.
  92
  93 Wed Jun  4 10:43:14 1997  Andrew Cagney  <cagney@b1.cygnus.com>
  94
  95         * interp.c (decode_coproc): Implement MTC0 N, CAUSE.
  96         (SignalException): For BreakPoints ignore any mode bits and just
  97         save the PC.
  98         (SignalException): Always set the CAUSE register.
  99
 100 Tue Jun  3 05:00:33 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 101
 102         * interp.c (SignalException): Clear the simDELAYSLOT flag when an
 103         exception has been taken.
 104
 105         * interp.c: Implement the ERET and mt/f sr instructions.
 106
 107 start-sanitize-r5900
 108 Mon Jun  2 23:28:19 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 109
 110         * gencode.c (build_instruction): For paddu, extract unsigned
 111         sub-fields.
 112
 113         * gencode.c (build_instruction): Saturate padds instead of padd
 114         instructions.
 115
 116 end-sanitize-r5900
 117 Sat May 31 00:44:16 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 118
 119         * interp.c (SignalException): Don't bother restarting an
 120         interrupt.
 121
 122 Fri May 30 23:41:48 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 123
 124         * interp.c (SignalException): Really take an interrupt.
 125         (interrupt_event): Only deliver interrupts when enabled.
 126
 127 Tue May 27 20:08:06 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 128
 129         * interp.c (sim_info): Only print info when verbose.
 130         (sim_info) Use sim_io_printf for output.
 131
 132 Tue May 27 14:22:23 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 133
 134         * interp.c (CoProcPresent): Add UNUSED attribute - not used by all
 135         mips architectures.
 136
 137 Tue May 27 14:22:23 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 138
 139         * interp.c (sim_do_command): Check for common commands if a
 140         simulator specific command fails.
 141
 142 Thu May 22 09:32:03 1997  Gavin Koch  <gavin@cygnus.com>
 143
 144         * interp.c (sim_engine_run): ifdef out uses of simSTOP, simSTEP
 145         and simBE when DEBUG is defined.
 146
 147 Wed May 21 09:08:10 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 148
 149         * interp.c (interrupt_event): New function.  Pass exception event
 150         onto exception handler.
 151
 152         * configure.in: Check for stdlib.h.
 153         * configure: Regenerate.
 154
 155         * gencode.c (build_instruction): Add UNUSED attribute to tempS
 156         variable declaration.
 157         (build_instruction): Initialize memval1.
 158         (build_instruction): Add UNUSED attribute to byte, bigend,
 159         reverse.
 160         (build_operands): Ditto.
 161
 162         * interp.c: Fix GCC warnings.
 163         (sim_get_quit_code): Delete.
 164
 165         * configure.in: Add INLINE, ENDIAN, HOSTENDIAN and WARNINGS.
 166         * Makefile.in: Ditto.
 167         * configure: Re-generate.
 168
 169         * Makefile.in (SIM_OBJS): Add sim-watch.o module.
 170
 171 Tue May 20 15:08:56 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 172
 173         * interp.c (mips_option_handler): New function parse argumes using
 174         sim-options.
 175         (myname): Replace with STATE_MY_NAME.
 176         (sim_open): Delete check for host endianness - performed by
 177         sim_config.
 178         (simHOSTBE, simBE): Delete, replaced by sim-endian flags.
 179         (sim_open): Move much of the initialization from here.
 180         (sim_load): To here.  After the image has been loaded and
 181         endianness set.
 182         (sim_open): Move ColdReset from here.
 183         (sim_create_inferior): To here.
 184         (sim_open): Make FP check less dependant on host endianness.
 185
 186         * Makefile.in (SIM_RUN_OBJS): Set to nrun.o - use new version or
 187         run.
 188         * interp.c (sim_set_callbacks): Delete.
 189
 190         * interp.c (membank, membank_base, membank_size): Replace with
 191         STATE_MEMORY, STATE_MEM_SIZE, STATE_MEM_BASE.
 192         (sim_open): Remove call to callback->init. gdb/run do this.
 193
 194         * interp.c: Update
 195
 196         * sim-main.h (SIM_HAVE_FLATMEM): Define.
 197
 198         * interp.c (big_endian_p): Delete, replaced by
 199         current_target_byte_order.
 200
 201 Tue May 20 13:55:00 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 202
 203         * interp.c (host_read_long, host_read_word, host_swap_word,
 204         host_swap_long): Delete. Using common sim-endian.
 205         (sim_fetch_register, sim_store_register): Use H2T.
 206         (pipeline_ticks): Delete.  Handled by sim-events.
 207         (sim_info): Update.
 208         (sim_engine_run): Update.
 209
 210 Tue May 20 13:42:03 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 211
 212         * interp.c (sim_stop_reason): Move code determining simEXCEPTION
 213         reason from here.
 214         (SignalException): To here. Signal using sim_engine_halt.
 215         (sim_stop_reason): Delete, moved to common.
 216
 217 Tue May 20 10:19:48 1997  Andrew Cagney  <cagney@b2.cygnus.com>
 218
 219         * interp.c (sim_open): Add callback argument.
 220         (sim_set_callbacks): Delete SIM_DESC argument.
 221         (sim_size): Ditto.
 222
 223 Mon May 19 18:20:38 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 224
 225         * Makefile.in (SIM_OBJS): Add common modules.
 226
 227         * interp.c (sim_set_callbacks): Also set SD callback.
 228         (set_endianness, xfer_*, swap_*): Delete.
 229         (host_read_word, host_read_long, host_swap_word, host_swap_long):
 230         Change to functions using sim-endian macros.
 231         (control_c, sim_stop): Delete, use common version.
 232         (simulate): Convert into.
 233         (sim_engine_run): This function.
 234         (sim_resume): Delete.
 235
 236         * interp.c (simulation): New variable - the simulator object.
 237         (sim_kind): Delete global - merged into simulation.
 238         (sim_load): Cleanup.  Move PC assignment from here.
 239         (sim_create_inferior): To here.
 240
 241         * sim-main.h: New file.
 242         * interp.c (sim-main.h): Include.
 243
 244 Thu Apr 24 00:39:51 1997  Doug Evans  <dje@canuck.cygnus.com>
 245
 246         * configure: Regenerated to track ../common/aclocal.m4 changes.
 247
 248 Wed Apr 23 17:32:19 1997  Doug Evans  <dje@canuck.cygnus.com>
 249
 250         * tconfig.in (SIM_HAVE_BIENDIAN): Define.
 251
 252 Mon Apr 21 17:16:13 1997  Gavin Koch  <gavin@cygnus.com>
 253
 254         * gencode.c (build_instruction): DIV instructions: check
 255         for division by zero and integer overflow before using
 256         host's division operation.
 257
 258 Thu Apr 17 03:18:14 1997  Doug Evans  <dje@canuck.cygnus.com>
 259
 260         * Makefile.in (SIM_OBJS): Add sim-load.o.
 261         * interp.c: #include bfd.h.
 262         (target_byte_order): Delete.
 263         (sim_kind, myname, big_endian_p): New static locals.
 264         (sim_open): Set sim_kind, myname.  Move call to set_endianness to
 265         after argument parsing.  Recognize -E arg, set endianness accordingly.
 266         (sim_load): Return SIM_RC.  New arg abfd.  Call sim_load_file to
 267         load file into simulator.  Set PC from bfd.
 268         (sim_create_inferior): Return SIM_RC.  Delete arg start_address.
 269         (set_endianness): Use big_endian_p instead of target_byte_order.
 270
 271 Wed Apr 16 17:55:37 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 272
 273         * interp.c (sim_size): Delete prototype - conflicts with
 274         definition in remote-sim.h.  Correct definition.
 275
 276 Mon Apr  7 15:45:02 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>
 277
 278         * configure: Regenerated to track ../common/aclocal.m4 changes.
 279         * config.in: Ditto.
 280
 281 Wed Apr  2 15:06:28 1997  Doug Evans  <dje@canuck.cygnus.com>
 282
 283         * interp.c (sim_open): New arg `kind'.
 284
 285         * configure: Regenerated to track ../common/aclocal.m4 changes.
 286
 287 Wed Apr  2 14:34:19 1997 Andrew Cagney <cagney@kremvax.cygnus.com>
 288
 289         * configure: Regenerated to track ../common/aclocal.m4 changes.
 290
 291 Tue Mar 25 11:38:22 1997  Doug Evans  <dje@canuck.cygnus.com>
 292
 293         * interp.c (sim_open): Set optind to 0 before calling getopt.
 294
 295 Wed Mar 19 01:14:00 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>
 296
 297         * configure: Regenerated to track ../common/aclocal.m4 changes.
 298
 299 Mon Mar 17 10:52:59 1997  Gavin Koch  <gavin@cetus.cygnus.com>
 300
 301         * interp.c : Replace uses of pr_addr with pr_uword64
 302         where the bit length is always 64 independent of SIM_ADDR.
 303         (pr_uword64) : added.
 304
 305 Mon Mar 17 15:10:07 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>
 306
 307         * configure: Re-generate.
 308
 309 Fri Mar 14 10:34:11 1997  Michael Meissner  <meissner@cygnus.com>
 310
 311         * configure: Regenerate to track ../common/aclocal.m4 changes.
 312
 313 Thu Mar 13 12:51:36 1997  Doug Evans  <dje@canuck.cygnus.com>
 314
 315         * interp.c (sim_open): New SIM_DESC result.  Argument is now
 316         in argv form.
 317         (other sim_*): New SIM_DESC argument.
 318
 319 start-sanitize-r5900
 320 Wed Feb 26 18:32:21 1997  Gavin Koch  <gavin@cygnus.com>
 321
 322         * gencode.c (POP_AND,POP_OR,POP_NOR,POP_XOR):
 323         Change values to avoid overloading DOUBLEWORD which is tested
 324         for all insns.
 325         * gencode.c: reinstate "offending code".
 326
 327 end-sanitize-r5900
 328 Mon Feb 24 22:47:14 1997  Dawn Perchik  <dawn@cygnus.com>
 329
 330         * interp.c: Fix printing of addresses for non-64-bit targets.
 331         (pr_addr): Add function to print address based on size.
 332 start-sanitize-r5900
 333         * gencode.c: #ifdef out offending code until a permanent fix
 334         can be added.  Code is causing build errors for non-5900 mips targets.
 335 end-sanitize-r5900
 336
 337 start-sanitize-r5900
 338 Thu Feb 20 10:40:24 1997  Gavin Koch  <gavin@cetus.cygnus.com>
 339
 340         * gencode.c (process_instructions): Correct test for ISA dependent
 341         architecture bits in isa field of MIPS_DECODE.
 342
 343 end-sanitize-r5900
 344 Wed Feb 19 14:42:09 1997  Mark Alexander  <marka@cygnus.com>
 345
 346         * interp.c (simopen): Add support for LSI MiniRISC PMON vectors.
 347
 348 start-sanitize-r5900
 349 Tue Feb 18 17:03:47 1997  Gavin Koch  <gavin@cygnus.com>
 350
 351         * gencode.c (MIPS_DECODE): Correct instruction feature flags for
 352         PMADDUW.
 353
 354 end-sanitize-r5900
 355 Thu Feb 13 14:08:30 1997  Ian Lance Taylor  <ian@cygnus.com>
 356
 357         * gencode.c (build_mips16_operands): Correct computation of base
 358         address for extended PC relative instruction.
 359
 360 start-sanitize-r5900
 361 Fri Feb  7 11:12:44 1997  Gavin Koch  <gavin@cygnus.com>
 362
 363         * Makefile.in, configure, configure.in, gencode.c,
 364         interp.c, support.h: add r5900.
 365
 366 end-sanitize-r5900
 367 Thu Feb  6 17:16:15 1997  Ian Lance Taylor  <ian@cygnus.com>
 368
 369         * interp.c (mips16_entry): Add support for floating point cases.
 370         (SignalException): Pass floating point cases to mips16_entry.
 371         (ValueFPR): Don't restrict fmt_single and fmt_word to even
 372         registers.
 373         (StoreFPR): Likewise.  Also, don't clobber fpr + 1 for fmt_single
 374         or fmt_word.
 375         (COP_LW): Pass fmt_word rather than fmt_uninterpreted to StoreFPR,
 376         and then set the state to fmt_uninterpreted.
 377         (COP_SW): Temporarily set the state to fmt_word while calling
 378         ValueFPR.
 379
 380 Tue Feb  4 16:48:25 1997  Ian Lance Taylor  <ian@cygnus.com>
 381
 382         * gencode.c (build_instruction): The high order may be set in the
 383         comparison flags at any ISA level, not just ISA 4.
 384
 385 Tue Feb  4 13:33:30 1997  Doug Evans  <dje@canuck.cygnus.com>
 386
 387         * Makefile.in (@COMMON_MAKEFILE_FRAG): Use
 388         COMMON_{PRE,POST}_CONFIG_FRAG instead.
 389         * configure.in: sinclude ../common/aclocal.m4.
 390         * configure: Regenerated.
 391
 392 Fri Jan 31 11:11:45 1997  Ian Lance Taylor  <ian@cygnus.com>
 393
 394         * configure: Rebuild after change to aclocal.m4.
 395
 396 Thu Jan 23 11:46:23 1997  Stu Grossman  (grossman@critters.cygnus.com)
 397
 398         * configure configure.in Makefile.in:  Update to new configure
 399         scheme which is more compatible with WinGDB builds.
 400         * configure.in:  Improve comment on how to run autoconf.
 401         * configure:  Re-run autoconf to get new ../common/aclocal.m4.
 402         * Makefile.in:  Use autoconf substitution to install common
 403         makefile fragment.
 404
 405 Wed Jan  8 12:39:03 1997  Jim Wilson  <wilson@cygnus.com>
 406
 407         * gencode.c (build_instruction): Use BigEndianCPU instead of
 408         ByteSwapMem.
 409
 410 Thu Jan 02 22:23:04 1997  Mark Alexander  <marka@cygnus.com>
 411
 412         * interp.c (sim_monitor): Make output to stdout visible in
 413         wingdb's I/O log window.
 414
 415 Tue Dec 31 07:04:00 1996  Mark Alexander  <marka@cygnus.com>
 416
 417         * support.h: Undo previous change to SIGTRAP
 418         and SIGQUIT values.
 419
 420 Mon Dec 30 17:36:06 1996  Ian Lance Taylor  <ian@cygnus.com>
 421
 422         * interp.c (store_word, load_word): New static functions.
 423         (mips16_entry): New static function.
 424         (SignalException): Look for mips16 entry and exit instructions.
 425         (simulate): Use the correct index when setting fpr_state after
 426         doing a pending move.
 427
 428 Sun Dec 29 09:37:18 1996  Mark Alexander  <marka@cygnus.com>
 429
 430         * interp.c: Fix byte-swapping code throughout to work on
 431         both little- and big-endian hosts.
 432
 433 Sun Dec 29 09:18:32 1996  Mark Alexander  <marka@cygnus.com>
 434
 435         * support.h: Make definitions of SIGTRAP and SIGQUIT consistent
 436         with gdb/config/i386/xm-windows.h.
 437
 438 Fri Dec 27 22:48:51 1996  Mark Alexander  <marka@cygnus.com>
 439
 440         * gencode.c (build_instruction): Work around MSVC++ code gen bug
 441         that messes up arithmetic shifts.
 442
 443 Fri Dec 20 11:04:05 1996  Stu Grossman  (grossman@critters.cygnus.com)
 444
 445         * support.h:  Use _WIN32 instead of __WIN32__.  Also add defs for
 446         SIGTRAP and SIGQUIT for _WIN32.
 447
 448 Thu Dec 19 14:07:27 1996  Ian Lance Taylor  <ian@cygnus.com>
 449
 450         * gencode.c (build_instruction) [MUL]: Cast operands to word64, to
 451         force a 64 bit multiplication.
 452         (build_instruction) [OR]: In mips16 mode, don't do anything if the
 453         destination register is 0, since that is the default mips16 nop
 454         instruction.
 455
 456 Mon Dec 16 14:59:38 1996  Ian Lance Taylor  <ian@cygnus.com>
 457
 458         * gencode.c (MIPS16_DECODE): SWRASP is I8, not RI.
 459         (build_endian_shift): Don't check proc64.
 460         (build_instruction): Always set memval to uword64.  Cast op2 to
 461         uword64 when shifting it left in memory instructions.  Always use
 462         the same code for stores--don't special case proc64.
 463
 464         * gencode.c (build_mips16_operands): Fix base PC value for PC
 465         relative operands.
 466         (build_instruction): Call JALDELAYSLOT rather than DELAYSLOT for a
 467         jal instruction.
 468         * interp.c (simJALDELAYSLOT): Define.
 469         (JALDELAYSLOT): Define.
 470         (INDELAYSLOT, INJALDELAYSLOT): Define.
 471         (simulate): Clear simJALDELAYSLOT when simDELAYSLOT is cleared.
 472
 473 Tue Dec 24 22:11:20 1996  Angela Marie Thomas (angela@cygnus.com)
 474
 475         * interp.c (sim_open): add flush_cache as a PMON routine
 476         (sim_monitor): handle flush_cache by ignoring it
 477
 478 Wed Dec 11 13:53:51 1996  Jim Wilson  <wilson@cygnus.com>
 479
 480         * gencode.c (build_instruction): Use !ByteSwapMem instead of
 481         BigEndianMem.
 482         * interp.c (CONFIG, config_EP_{mask,shift,D,DxxDxx, config_BE): Delete.
 483         (BigEndianMem): Rename to ByteSwapMem and change sense.
 484         (BigEndianCPU, sim_write, LoadMemory, StoreMemory): Change
 485         BigEndianMem references to !ByteSwapMem.
 486         (set_endianness): New function, with prototype.
 487         (sim_open): Call set_endianness.
 488         (sim_info): Use simBE instead of BigEndianMem.
 489         (xfer_direct_word, xfer_direct_long, swap_direct_word,
 490         swap_direct_long, xfer_big_word, xfer_big_long, xfer_little_word,
 491         xfer_little_long, swap_word, swap_long): Delete unnecessary MSC_VER
 492         ifdefs, keeping the prototype declaration.
 493         (swap_word): Rewrite correctly.
 494         (ColdReset): Delete references to CONFIG.  Delete endianness related
 495         code; moved to set_endianness.
 496
 497 Tue Dec 10 11:32:04 1996  Jim Wilson  <wilson@cygnus.com>
 498
 499         * gencode.c (build_instruction, case JUMP): Truncate PC to 32 bits.
 500         * interp.c (CHECKHILO): Define away.
 501         (simSIGINT): New macro.
 502         (membank_size): Increase from 1MB to 2MB.
 503         (control_c): New function.
 504         (sim_resume): Rename parameter signal to signal_number.  Add local
 505         variable prev.  Call signal before and after simulate.
 506         (sim_stop_reason): Add simSIGINT support.
 507         (sim_warning, sim_error, dotrace, SignalException): Define as stdarg
 508         functions always.
 509         (sim_warning): Delete call to SignalException.  Do call printf_filtered
 510         if logfh is NULL.
 511         (AddressTranslation): Add #ifdef DEBUG around debugging message and
 512         a call to sim_warning.
 513
 514 Wed Nov 27 11:53:50 1996  Ian Lance Taylor  <ian@cygnus.com>
 515
 516         * gencode.c (process_instructions): If ! proc64, skip DOUBLEWORD
 517         16 bit instructions.
 518
 519 Tue Nov 26 11:53:12 1996  Ian Lance Taylor  <ian@cygnus.com>
 520
 521         Add support for mips16 (16 bit MIPS implementation):
 522         * gencode.c (inst_type): Add mips16 instruction encoding types.
 523         (GETDATASIZEINSN): Define.
 524         (MIPS_DECODE): Add REG flag to dsllv, dsrav, and dsrlv.  Add
 525         jalx.  Add LEFT flag to mfhi and mflo.  Add RIGHT flag to mthi and
 526         mtlo.
 527         (MIPS16_DECODE): New table, for mips16 instructions.
 528         (bitmap_val): New static function.
 529         (struct mips16_op): Define.
 530         (mips16_op_table): New table, for mips16 operands.
 531         (build_mips16_operands): New static function.
 532         (process_instructions): If PC is odd, decode a mips16
 533         instruction.  Break out instruction handling into new
 534         build_instruction function.
 535         (build_instruction): New static function, broken out of
 536         process_instructions.  Check modifiers rather than flags for SHIFT
 537         bit count and m[ft]{hi,lo} direction.
 538         (usage): Pass program name to fprintf.
 539         (main): Remove unused variable this_option_optind.  Change
 540         ``*loptarg++'' to ``loptarg++''.
 541         (my_strtoul): Parenthesize && within ||.
 542         * interp.c (LoadMemory): Accept a halfword pAddr if vAddr is odd.
 543         (simulate): If PC is odd, fetch a 16 bit instruction, and
 544         increment PC by 2 rather than 4.
 545         * configure.in: Add case for mips16*-*-*.
 546         * configure: Rebuild.
 547
 548 Fri Nov 22 08:49:36 1996  Mark Alexander  <marka@cygnus.com>
 549
 550         * interp.c: Allow -t to enable tracing in standalone simulator.
 551         Fix garbage output in trace file and error messages.
 552
 553 Wed Nov 20 01:54:37 1996  Doug Evans  <dje@canuck.cygnus.com>
 554
 555         * Makefile.in: Delete stuff moved to ../common/Make-common.in.
 556         (SIM_{OBJS,EXTRA_CFLAGS,EXTRA_CLEAN}): Define.
 557         * configure.in: Simplify using macros in ../common/aclocal.m4.
 558         * configure: Regenerated.
 559         * tconfig.in: New file.
 560
 561 Tue Nov 12 13:34:00 1996  Dawn Perchik  <dawn@cygnus.com>
 562
 563         * interp.c: Fix bugs in 64-bit port.
 564         Use ansi function declarations for msvc compiler.
 565         Initialize and test file pointer in trace code.
 566         Prevent duplicate definition of LAST_EMED_REGNUM.
 567
 568 Tue Oct 15 11:07:06 1996  Mark Alexander  <marka@cygnus.com>
 569
 570         * interp.c (xfer_big_long): Prevent unwanted sign extension.
 571
 572 Thu Sep 26 17:35:00 1996  James G. Smith  <jsmith@cygnus.co.uk>
 573
 574         * interp.c (SignalException): Check for explicit terminating
 575         breakpoint value.
 576         * gencode.c: Pass instruction value through SignalException()
 577         calls for Trap, Breakpoint and Syscall.
 578
 579 Thu Sep 26 11:35:17 1996  James G. Smith  <jsmith@cygnus.co.uk>
 580
 581         * interp.c (SquareRoot): Add HAVE_SQRT check to ensure sqrt() is
 582         only used on those hosts that provide it.
 583         * configure.in: Add sqrt() to list of functions to be checked for.
 584         * config.in: Re-generated.
 585         * configure: Re-generated.
 586
 587 Fri Sep 20 15:47:12 1996  Ian Lance Taylor  <ian@cygnus.com>
 588
 589         * gencode.c (process_instructions): Call build_endian_shift when
 590         expanding STORE RIGHT, to fix swr.
 591         * support.h (SIGNEXTEND): If the sign bit is not set, explicitly
 592         clear the high bits.
 593         * interp.c (Convert): Fix fmt_single to fmt_long to not truncate.
 594         Fix float to int conversions to produce signed values.
 595
 596 Thu Sep 19 15:34:17 1996  Ian Lance Taylor  <ian@cygnus.com>
 597
 598         * gencode.c (MIPS_DECODE): Set UNSIGNED for multu instruction.
 599         (process_instructions): Correct handling of nor instruction.
 600         Correct shift count for 32 bit shift instructions. Correct sign
 601         extension for arithmetic shifts to not shift the number of bits in
 602         the type.  Fix 64 bit multiply high word calculation.  Fix 32 bit
 603         unsigned multiply.  Fix ldxc1 and friends to use coprocessor 1.
 604         Fix madd.
 605         * interp.c (CHECKHILO): Don't set HIACCESS, LOACCESS, or HLPC.
 606         It's OK to have a mult follow a mult.  What's not OK is to have a
 607         mult follow an mfhi.
 608         (Convert): Comment out incorrect rounding code.
 609
 610 Mon Sep 16 11:38:16 1996  James G. Smith  <jsmith@cygnus.co.uk>
 611
 612         * interp.c (sim_monitor): Improved monitor printf
 613         simulation. Tidied up simulator warnings, and added "--log" option
 614         for directing warning message output.
 615         * gencode.c: Use sim_warning() rather than WARNING macro.
 616
 617 Thu Aug 22 15:03:12 1996  Ian Lance Taylor  <ian@cygnus.com>
 618
 619         * Makefile.in (gencode): Depend upon gencode.o, getopt.o, and
 620         getopt1.o, rather than on gencode.c.  Link objects together.
 621         Don't link against -liberty.
 622         (gencode.o, getopt.o, getopt1.o): New targets.
 623         * gencode.c: Include <ctype.h> and "ansidecl.h".
 624         (AND): Undefine after including "ansidecl.h".
 625         (ULONG_MAX): Define if not defined.
 626         (OP_*): Don't define macros; now defined in opcode/mips.h.
 627         (main): Call my_strtoul rather than strtoul.
 628         (my_strtoul): New static function.
 629
 630 Wed Jul 17 18:12:38 1996  Stu Grossman  (grossman@critters.cygnus.com)
 631
 632         * gencode.c (process_instructions):  Generate word64 and uword64
 633         instead of `long long' and `unsigned long long' data types.
 634         * interp.c:  #include sysdep.h to get signals, and define default
 635         for SIGBUS.
 636         * (Convert):  Work around for Visual-C++ compiler bug with type
 637         conversion.
 638         * support.h:  Make things compile under Visual-C++ by using
 639         __int64 instead of `long long'.  Change many refs to long long
 640         into word64/uword64 typedefs.
 641
 642 Wed Jun 26 12:24:55 1996  Jason Molenda  (crash@godzilla.cygnus.co.jp)
 643
 644         * Makefile.in (bindir, libdir, datadir, mandir, infodir, includedir,
 645         INSTALL_PROGRAM, INSTALL_DATA): Use autoconf-set values.
 646         (docdir): Removed.
 647         * configure.in (AC_PREREQ): autoconf 2.5 or higher.
 648         (AC_PROG_INSTALL): Added.
 649         (AC_PROG_CC): Moved to before configure.host call.
 650         * configure: Rebuilt.
 651
 652 Wed Jun  5 08:28:13 1996  James G. Smith  <jsmith@cygnus.co.uk>
 653
 654         * configure.in: Define @SIMCONF@ depending on mips target.
 655         * configure: Rebuild.
 656         * Makefile.in (run): Add @SIMCONF@ to control simulator
 657         construction.
 658         * gencode.c: Change LOADDRMASK to 64bit memory model only.
 659         * interp.c: Remove some debugging, provide more detailed error
 660         messages, update memory accesses to use LOADDRMASK.
 661
 662 Mon Jun  3 11:55:03 1996  Ian Lance Taylor  <ian@cygnus.com>
 663
 664         * configure.in: Add calls to AC_CONFIG_HEADER, AC_CHECK_HEADERS,
 665         AC_CHECK_LIB, and AC_CHECK_FUNCS.  Change AC_OUTPUT to set
 666         stamp-h.
 667         * configure: Rebuild.
 668         * config.in: New file, generated by autoheader.
 669         * interp.c: Include "config.h".  Include <stdlib.h>, <string.h>,
 670         and <strings.h> if they exist.  Replace #ifdef sun with #ifdef
 671         HAVE_ANINT and HAVE_AINT, as appropriate.
 672         * Makefile.in (run): Use @LIBS@ rather than -lm.
 673         (interp.o): Depend upon config.h.
 674         (Makefile): Just rebuild Makefile.
 675         (clean): Remove stamp-h.
 676         (mostlyclean): Make the same as clean, not as distclean.
 677         (config.h, stamp-h): New targets.
 678
 679 Fri May 10 00:41:17 1996  James G. Smith  <jsmith@cygnus.co.uk>
 680
 681         * interp.c (ColdReset): Fix boolean test. Make all simulator
 682         globals static.
 683
 684 Wed May  8 15:12:58 1996  James G. Smith  <jsmith@cygnus.co.uk>
 685
 686         * interp.c (xfer_direct_word, xfer_direct_long,
 687         swap_direct_word, swap_direct_long, xfer_big_word,
 688         xfer_big_long, xfer_little_word, xfer_little_long,
 689         swap_word,swap_long): Added.
 690         * interp.c (ColdReset): Provide function indirection to
 691         host<->simulated_target transfer routines.
 692         * interp.c (sim_store_register, sim_fetch_register): Updated to
 693         make use of indirected transfer routines.
 694
 695 Fri Apr 19 15:48:24 1996  James G. Smith  <jsmith@cygnus.co.uk>
 696
 697         * gencode.c (process_instructions): Ensure FP ABS instruction
 698         recognised.
 699         * interp.c (AbsoluteValue): Add routine. Also provide simple PMON
 700         system call support.
 701
 702 Wed Apr 10 09:51:38 1996  James G. Smith  <jsmith@cygnus.co.uk>
 703
 704         * interp.c (sim_do_command): Complain if callback structure not
 705         initialised.
 706
 707 Thu Mar 28 13:50:51 1996  James G. Smith  <jsmith@cygnus.co.uk>
 708
 709         * interp.c (Convert): Provide round-to-nearest and round-to-zero
 710         support for Sun hosts.
 711         * Makefile.in (gencode): Ensure the host compiler and libraries
 712         used for cross-hosted build.
 713
 714 Wed Mar 27 14:42:12 1996  James G. Smith  <jsmith@cygnus.co.uk>
 715
 716         * interp.c, gencode.c: Some more (TODO) tidying.
 717
 718 Thu Mar  7 11:19:33 1996  James G. Smith  <jsmith@cygnus.co.uk>
 719
 720         * gencode.c, interp.c: Replaced explicit long long references with
 721         WORD64HI, WORD64LO, SET64HI and SET64LO macro calls.
 722         * support.h (SET64LO, SET64HI): Macros added.
 723
 724 Wed Feb 21 12:16:21 1996  Ian Lance Taylor  <ian@cygnus.com>
 725
 726         * configure: Regenerate with autoconf 2.7.
 727
 728 Tue Jan 30 08:48:18 1996  Fred Fish  <fnf@cygnus.com>
 729
 730         * interp.c (LoadMemory): Enclose text following #endif in /* */.
 731         * support.h: Remove superfluous "1" from #if.
 732         * support.h (CHECKSIM): Remove stray 'a' at end of line.
 733
 734 Mon Dec  4 11:44:40 1995  Jamie Smith  <jsmith@cygnus.com>
 735
 736         * interp.c (StoreFPR): Control UndefinedResult() call on
 737         WARN_RESULT manifest.
 738
 739 Fri Dec  1 16:37:19 1995  James G. Smith  <jsmith@cygnus.co.uk>
 740
 741         * gencode.c: Tidied instruction decoding, and added FP instruction
 742         support.
 743
 744         * interp.c: Added dineroIII, and BSD profiling support. Also
 745         run-time FP handling.
 746
 747 Sun Oct 22 00:57:18 1995  James G. Smith  <jsmith@pasanda.cygnus.co.uk>
 748
 749         * Changelog, Makefile.in, README.Cygnus, configure, configure.in,
 750         gencode.c, interp.c, support.h: created.