sim/erc32/ChangeLog

   1 1999-03-03  DJ Delorie  <dj@cygnus.com>
   2
   3         * configure.in: add termcap and -luser32 for host=cygwin
   4         * configure: regenerate
   5
   6 1999-02-11  Hugo Tyson  <hmt@cygnus.co.uk>
   7
   8         * exec.c (dispatch_instruction):
   9         Correct the sense of the
  10                   if (!sparclite) {
  11                      sregs->trap = TRAP_UNIMP;
  12                      break;
  13                   }
  14         clause that has been pasted around: it's correct in the SCAN and
  15         DIVScc (divide step) cases (where it was probably originally
  16         written?), but reversed in the SDIV, SDIVcc, UDIV, UDIVcc cases
  17         ie. instructions only in the SPARC V8 or SPARClite 86x
  18         architectures.  It was also present when not required for SMUL,
  19         SMULcc, UMUL, UMULcc instructions that are present in all
  20         architectures.
  21
  22 1999-01-25  Hugo Tyson  <hmt@cygnus.co.uk>
  23
  24         * interf.c (run_sim): Fix a bug in the main loop's handling of
  25         annulled delay slot instructions.  There is precedent for this
  26         change; the _other_ main loop in sis.c gets it right according to
  27         my reading of the code.
  28
  29         The bug is: if an interrupt happens when the next instruction
  30         (at sregs->pc) is annulled, the trap is taken (by execute_trap())
  31         with the current values of PC and NPC, so when the trap returns,
  32         the annulled instruction is indeed executed.  Another giveaway is
  33         that the annul flag is cleared in execute_trap(): the information
  34         is demonstrably discarded.
  35
  36         The solution is: perform annulling before looking for traps, in
  37         fact it's neater to do annulling, see if there's an interrupt and
  38         if not, do the instruction, then handle traps be they generated by
  39         interrupts pending or by the instruction we might just have done.
  40         That's what the sis.c one does.
  41
  42 1999-01-20  Hugo Tyson  <hmt@cygnus.co.uk>
  43
  44         * sis.h: Add asr17 register for support of SparcLITE (at least the
  45         Hitachi ones I find before me)
  46
  47         * exec.c (dispatch_instruction): Case WRY: Allow write of asr17 if
  48         sparclite.  Other ASR numbers than 17 or 0 (Y) trap out.
  49         Case RDY: Allow read of asr17 if sparclite.  Other ASRs ditto.
  50         (execute_trap): Do single-vector-trapping if asr17 bit 0 is set.
  51         (init_regs): Initialize y and asr17.
  52         NB: In instruction-set space, the Y register is asr0; the
  53         instructions have different names for human reasons only.
  54
  55         * sis.c:
  56         * interf.c: Set boolean mode variable dumbio if invoked with
  57         argument "-dumbio" and mention it of verbose.
  58         * erc32.c: if "dumbio" is set, do not assume that there is a
  59         terminal type device attached to stdin/stdout.  Do not set
  60         buffering or mess with tcsetattr or do any read operations in
  61         order to make UART interrupts; not input data is supported.
  62         This is necessary to allow the sim to be used within the eCos
  63         testing infrastructure where stdin/stdout are pipes to a TCL
  64         program; the sim hangs otherwise.
  65
  66 Thu Jul 23 07:17:03 1998  Mark Alexander  <marka@cygnus.com>
  67
  68         * exec.c (dispatch_instruction): Add SPARClite 'scan' instruction.
  69
  70 Tue Jul  7 21:12:41 1998  Mark Alexander  <marka@cygnus.com>
  71
  72         * func.c (bfd_load): Add special handling of a.out executables.
  73
  74 Sat Jun 13 08:33:25 1998  Mark Alexander  <marka@cygnus.com>
  75
  76         * func.c (bfd_load): Print correct endianness.
  77         * interf.c (run_sim): Print debugging information if verbosity level
  78         is greater than 2.
  79         (sim_open): Repeated -v options now increment verbosity level.
  80         (sim_store_register): Handle little-endian case.
  81         (flush_window): Print debugging information if verbosity level
  82         is greater then 2.
  83
  84 Tue Jun  2 15:20:35 1998  Mark Alexander  <marka@cygnus.com>
  85
  86         * interf.c (sim_open): Use revamped memory_read, which makes
  87         byte-swapping unnecessary.  Add -sparclite-board option for
  88         emulating RAM found on typical SPARClite boards.  Print
  89         error message for unrecognized option.
  90         * erc32.c: Change RAM address and size from constants to variables,
  91         to allow emulation of SPARClite board RAM.
  92         (fetch_bytes, store_bytes): New helper functions for revamped
  93         mememory_read and memory_write.
  94         (memory_read, memory_write): Rewrite to store bytes in target
  95         byte order instead of storing words in host byte order; this
  96         greatly simplifies support of little-endian programs.
  97         (get_mem_ptr): Remove unnecessary byte parameter.
  98         (sis_memory_write, sis_memory_read): Store words in target
  99         byte order instead of host byte order.
 100         (byte_swap_words): Remove, no longer needed.
 101         * sis.h ((byte_swap_words): Remove declaration, no longer needed.
 102         (memory_read): Add new sz parameter.
 103         * sis.c (run_sim): Use revamped memory_read, which makes
 104         byte-swapping unnecessary.
 105         * exec.c (dispatch_instruction): Use revamped memory_read, which
 106         makes byte-swapping and double-word fetching unnecessary.
 107         * func.c (sparclite_board): Declare new variable.
 108         (get_regi): Handle little-endian data.
 109         (bfd_load): Recognize little-endian SPARClite as having
 110         little-endian data.
 111
 112 Fri May 22 14:23:16 1998  Mark Alexander  <marka@cygnus.com>
 113
 114         * erc32.c (port_init): Print messages only if sis_verbose is true.
 115         * func.c (bfd_load): Ditto.
 116         * interf.c (sim_open): Ditto.
 117
 118 Thu May 14 23:10:48 1998  Mark Alexander  <marka@cygnus.com>
 119
 120         * sis.h (uint64, int64): Define.
 121         * exec.c (SDIV, SDIVCC, UDIV, UDIVCC): Define new opcodes.
 122         * (mul64): Simplify calculation of negative result.
 123         * (div64): New helper function for 64-bit division.
 124         * (dispatch_instruction): Add emulation of SDIV, SDIVCC, UDIV,
 125         and UDIVCC.
 126
 127 Wed May 13 14:59:54 1998  Mark Alexander  <marka@cygnus.com>
 128
 129         * erc32.c (close_port): Don't close stdin; it kills GDB.
 130         (byte_swap_words): New function.
 131         * sis.h: (byte_swap_words): Declare.
 132         * interf.c (run_sim): Always fetch instructions as big-endian.
 133         * sis.c (run_sim): Ditto.
 134
 135 Tue Apr 28 18:33:31 1998  Geoffrey Noer  <noer@cygnus.com>
 136
 137         * configure: Regenerated to track ../common/aclocal.m4 changes.
 138
 139 Sun Apr 26 15:31:55 1998  Tom Tromey  <tromey@creche>
 140
 141         * configure: Regenerated to track ../common/aclocal.m4 changes.
 142         * config.in: Ditto.
 143
 144 Sun Apr 26 15:20:17 1998  Tom Tromey  <tromey@cygnus.com>
 145
 146         * acconfig.h: New file.
 147         * configure.in: Reverted change of Apr 24; use sinclude again.
 148
 149 Fri Apr 24 14:16:40 1998  Tom Tromey  <tromey@creche>
 150
 151         * configure: Regenerated to track ../common/aclocal.m4 changes.
 152         * config.in: Ditto.
 153
 154 Fri Apr 24 11:19:52 1998  Tom Tromey  <tromey@cygnus.com>
 155
 156         * configure.in: Don't call sinclude.
 157
 158 Sat Apr 18 12:00:16 1998  Mark Alexander  <marka@cygnus.com>
 159
 160         * func.c (disp_fpu): Fix build problem on big-endian hosts.
 161
 162 Wed Apr  8 19:33:34 1998  Mark Alexander  <marka@cygnus.com>
 163
 164         * erc32.c (sim_stop): Handle SIGINT gracefully.
 165         * interf.c (sim_open): Don't catch SIGINT; GDB will do that for us.
 166
 167 Wed Apr  8 18:29:40 1998  Mark Alexander  <marka@cygnus.com>
 168
 169         * exec.c (dispatch_instruction): Change how carry out is calculated
 170         in DIVSCC.  Add emulation of SMULCC, UMUL, and UMULCC.
 171
 172 Sat Apr  4 20:36:25 1998  Andrew Cagney  <cagney@b1.cygnus.com>
 173
 174         * configure: Regenerated to track ../common/aclocal.m4 changes.
 175
 176 Wed Apr  1 21:19:18 1998  Mark Alexander  <marka@cygnus.com>
 177
 178         * end.c: Update to version 2.7.5, fix compiler warnings and bugs.
 179         * erc32.c: Ditto.
 180         * exec.c: Ditto.
 181         * float.c: Ditto.
 182         * func.c: Ditto.
 183         * help.c: Ditto.
 184         * interf.c: Ditto.
 185         * sis.c: Ditto.
 186         * sis.h: Ditto.
 187
 188 Fri Mar 27 16:15:52 1998  Andrew Cagney  <cagney@b1.cygnus.com>
 189
 190         * configure: Regenerated to track ../common/aclocal.m4 changes.
 191
 192 Wed Mar 25 12:35:29 1998  Andrew Cagney  <cagney@b1.cygnus.com>
 193
 194         * configure: Regenerated to track ../common/aclocal.m4 changes.
 195
 196 Wed Mar 18 12:38:12 1998  Andrew Cagney  <cagney@b1.cygnus.com>
 197
 198         * configure: Regenerated to track ../common/aclocal.m4 changes.
 199
 200 Tue Feb 17 12:41:11 1998  Andrew Cagney  <cagney@b1.cygnus.com>
 201
 202         * interf.c (sim_store_register, sim_fetch_register): Pass in
 203         length parameter.  Return -1.
 204
 205 Sun Feb  1 16:47:51 1998  Andrew Cagney  <cagney@b1.cygnus.com>
 206
 207         * configure: Regenerated to track ../common/aclocal.m4 changes.
 208
 209 Sat Jan 31 18:15:41 1998  Andrew Cagney  <cagney@b1.cygnus.com>
 210
 211         * configure: Regenerated to track ../common/aclocal.m4 changes.
 212
 213 Mon Jan 19 22:26:29 1998  Doug Evans  <devans@seba>
 214
 215         * configure: Regenerated to track ../common/aclocal.m4 changes.
 216
 217 Mon Dec 15 23:17:11 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 218
 219         * configure: Regenerated to track ../common/aclocal.m4 changes.
 220         * config.in: Ditto.
 221
 222 Thu Dec  4 09:21:05 1997  Doug Evans  <devans@canuck.cygnus.com>
 223
 224         * configure: Regenerated to track ../common/aclocal.m4 changes.
 225
 226 Fri Oct  3 09:28:00 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 227
 228         * configure: Regenerated to track ../common/aclocal.m4 changes.
 229
 230 Wed Sep 24 17:38:57 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 231
 232         * configure: Regenerated to track ../common/aclocal.m4 changes.
 233
 234 Tue Sep 23 11:04:38 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 235
 236         * configure: Regenerated to track ../common/aclocal.m4 changes.
 237
 238 Mon Sep 22 11:46:20 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 239
 240         * configure: Regenerated to track ../common/aclocal.m4 changes.
 241
 242 Fri Sep 19 17:45:25 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 243
 244         * configure: Regenerated to track ../common/aclocal.m4 changes.
 245
 246 Mon Sep 15 17:36:15 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 247
 248         * configure: Regenerated to track ../common/aclocal.m4 changes.
 249
 250 Wed Aug 27 18:13:22 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 251
 252         * configure: Regenerated to track ../common/aclocal.m4 changes.
 253         * config.in: Ditto.
 254
 255 Tue Aug 26 10:38:20 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 256
 257         * float.c (__setfpucw): Compile on any i386 target.  Not just NT.
 258
 259         * interf.c (sim_kill): Delete.
 260         (sim_create_inferior): Add ABFD argument.  Initialize PC from ABFD
 261         argument.
 262         (sim_load): Don't save start address.
 263         (start_address): Delete variable.
 264
 265 Mon Aug 25 17:50:22 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 266
 267         * configure: Regenerated to track ../common/aclocal.m4 changes.
 268         * config.in: Ditto.
 269
 270 Mon Aug 25 16:19:49 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 271
 272         * interf.c (sim_open): Add ABFD argument. Change ARGV to PARGV.
 273
 274 Mon Jun 30 11:45:25 1997  Doug Evans  <dje@canuck.cygnus.com>
 275
 276         * Makefile.in (install-sis): Change $(srcdir)/sis to sis.
 277
 278 Wed May 28 09:46:13 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 279
 280         * interf.c (sim_set_callbacks): Drop SD argument - not applicable.
 281         (sim_open): Add callback arg, save it.
 282
 283 Thu Apr 24 00:39:51 1997  Doug Evans  <dje@canuck.cygnus.com>
 284
 285         * configure: Regenerated to track ../common/aclocal.m4 changes.
 286
 287 Tue Apr 22 11:05:01 1997  Doug Evans  <dje@canuck.cygnus.com>
 288
 289         * interf.c (sim_open): Undo patch to add -E support.
 290
 291 Thu Apr 17 03:03:56 1997  Doug Evans  <dje@canuck.cygnus.com>
 292
 293         * interf.c (sim_open): Ignore -E arg.
 294         (start_address): New static local.
 295         (sim_load): Return SIM_RC.  New arg abfd.  Set start_address from bfd.
 296         (sim_create_inferior): Return SIM_RC.  Delete arg start_address.
 297
 298 Tue Apr 15 15:16:11 1997  Ian Lance Taylor  <ian@cygnus.com>
 299
 300         * Makefile.in (install-sis): Depend upon installdirs.  Use
 301         $(program_transform_name) directly, rather than using
 302         $(INSTALL_XFORM).
 303
 304 Mon Apr  7 15:45:02 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>
 305
 306         * configure: Regenerated to track ../common/aclocal.m4 changes.
 307         * config.in: Ditto.
 308
 309 Wed Apr  2 15:06:28 1997  Doug Evans  <dje@canuck.cygnus.com>
 310
 311         * interf.c (sim_open): New arg `kind'.
 312
 313         * configure: Regenerated to track ../common/aclocal.m4 changes.
 314
 315 Wed Apr  2 14:34:19 1997 Andrew Cagney <cagney@kremvax.cygnus.com>
 316
 317         * configure: Regenerated to track ../common/aclocal.m4 changes.
 318
 319 Mon Mar 17 15:10:07 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>
 320
 321         * configure: Re-generate.
 322
 323 Thu Mar 13 12:46:04 1997  Doug Evans  <dje@canuck.cygnus.com>
 324
 325         * interf.c (sim_open): New SIM_DESC result.  Argument is now in
 326         argv form.
 327         (other sim_*): New SIM_DESC argument.
 328
 329 Tue Feb  4 13:35:20 1997  Doug Evans  <dje@canuck.cygnus.com>
 330
 331         * Makefile.in (@COMMON_MAKEFILE_FRAG): Use
 332         COMMON_{PRE,POST}_CONFIG_FRAG instead.
 333         * configure.in: sinclude ../common/aclocal.m4.
 334         * configure: Regenerated.
 335
 336 Thu Jan 23 11:46:23 1997  Stu Grossman  (grossman@critters.cygnus.com)
 337
 338         * configure configure.in Makefile.in:  Update to new configure
 339         scheme which is more compatible with WinGDB builds.
 340         * configure.in:  Improve comment on how to run autoconf.
 341         * configure:  Re-run autoconf to get new ../common/aclocal.m4.
 342         * Makefile.in:  Use autoconf substitution to install common
 343         makefile fragment.
 344
 345 Wed Dec  4 18:25:04 1996  Rob Savoye  <rob@chinadoll.cygnus.com>
 346
 347         * interf.c (run_sim): Stop the simulator and reset the stdio after
 348         breakpoints.
 349
 350 Tue Dec  3 11:54:37 1996  Rob Savoye  <rob@chinadoll.cygnus.com>
 351
 352         * configure.in: Look for libtermcap.a.
 353         * Makefile.in: Only link in -ltermcap if it exists.
 354         * erc32.c: Update to version 2.6a. Fix uart handling.
 355         * exec.c: Update to version 2.6a. Add sparclite support.
 356         * float.c: Update to version 2.6a. Convert comments to
 357         preprocessor warnings. Add __setfpucw() for i385 hosts so floating
 358         point exceptions work on win32.
 359         * func.c: Update to version 2.6a. Fix uart handling, add support
 360         for user error traps.
 361         * help.c: Update to version 2.6a. Add help note on user error
 362         traps.
 363         * interf.c: Update to version 2.6a. Fix uart handling, and add
 364         sparclite support.
 365         * examples/gccx: Use sparclite cross compiler, not native gcc.
 366         * examples/srt0.S: Use "mov" rather than "wr" for manipulating
 367         the psr register.
 368
 369 Mon Nov 25 08:28:10 1996  Fred Fish  <fnf@cygnus.com>
 370
 371         * Makefile.in (run.o): Remove this rule, it hides the one in
 372         ../common/Make-common.in that correctly references the source
 373         in the sibling ../common directory.
 374
 375 Wed Nov 20 01:30:12 1996  Doug Evans  <dje@canuck.cygnus.com>
 376
 377         * Makefile.in: Delete stuff moved to ../common/Make-common.in.
 378         (SIM_{OBJS,EXTRA_LIBS,EXTRA_LIBDEPS,EXTRA_ALL,EXTRA_INSTALL}): Define.
 379         (SIM_{EXTRA_CLEAN,EXTRA_CFLAGS}): Define.
 380         * configure.in: Simplify using macros in ../common/aclocal.m4.
 381         Call AC_CHECK_HEADERS(stdlib.h).
 382         * configure: Regenerated.
 383         * config.in: New file.
 384         * func.c (sim_set_callbacks): Delete, moved to
 385         * interf.c (sim_set_callbacks): here.
 386         (sim_callback): New global.
 387         Rewrite all calls to printf_filtered to go through callback.
 388         (sim_size,sim_trace): New functions.
 389         (sim_{insert,remove}_breakpoint): #if 0 out.
 390         * sis.c: #include "config.h".  #include <stdlib.h> if present.
 391         (main): Coerce fprintf arg to INIT_DISASSEMBLE_INFO to fprintf_ftype.
 392         * sis.h: #include "callback.h".
 393         * run.c: Deleted, using one in ../common now.
 394
 395 Thu Oct  3 16:12:03 1996  Jason Molenda  (crash@godzilla.cygnus.co.jp)
 396
 397         * Makefile.in (clean): Move config.log to distclean.
 398
 399 Wed Oct  2 16:57:57 1996  Jason Molenda  (crash@godzilla.cygnus.co.jp)
 400
 401         * Makefile.in (clean): Also remove config.log.
 402
 403 Sat Sep 14 00:00:46 1996  Ian Lance Taylor  <ian@cygnus.com>
 404
 405         * Makefile.in (CC_FOR_BUILD): New variable.
 406         (AR, AR_FLAGS, BISON, MAKEINFO): Remove duplicate variables.
 407         (RANLIB, CC): Likewise.
 408         (end): Use $(CC_FOR_BUILD), not $(CC).
 409         * configure.in: Set CC_FOR_BUILD.
 410         * configure: Rebuild.
 411
 412 Sun Sep  8 14:04:37 1996  Stu Grossman  (grossman@critters.cygnus.com)
 413
 414         * erc32.c (port_init):  Disable this for __GO32__ (got no pty's
 415         there either...).
 416
 417 Mon Aug 12 17:04:58 1996  Stu Grossman  (grossman@critters.cygnus.com)
 418
 419         * erc32.c:  Don't include sys/ioctl.h or sys/file.h.  They aren't
 420         necessary.
 421         * (port_init):  Don't even *try* to open pty's under _WIN32.
 422         * Use SIM_ADDR, not caddr_t for declaring vars that hold addresses.
 423         * float.c:  Get rid of #warning.  Makes Microsoft C barf.
 424         * interf.c (sim_open):  Cast fprintf to (fprintf_ftype) to fix
 425         compiler warning.
 426         * (sim_load sim_create_inferior sim_read):  Use prototypes only in
 427         decls, not defs.
 428         * Get rid of enum sim_stop.  It's defined in remote-sim.h.
 429         * (sim_stop_reason):  Define SIGTRAP if _WIN32.
 430         * sis.h:  Include ansidecl.h and remote-sim.h.
 431
 432 Wed Jul  3 16:05:23 1996  Stu Grossman  (grossman@critters.cygnus.com)
 433
 434         * erc32.c (mec_reset mec_read mec_write memory_read memory_write),
 435         sis.h:  Get rid of all uses of long long's.
 436         * (close_port read_uart write_uart uarta_tx):  Don't seg fault
 437         when can't open pty's.
 438         * exec.c:  Add two new instructions: smul, and divscc.
 439         * interf.c (flush_windows):  New routine to flush the register
 440         windows out to the stack just before returning to GDB.  Makes
 441         backtraces work much better.
 442
 443 Wed Jun 26 12:19:11 1996  Jason Molenda  (crash@godzilla.cygnus.co.jp)
 444
 445         * Makefile.in (bindir, libdir, datadir, mandir, infodir, includedir,
 446         INSTALL_PROGRAM, INSTALL_DATA): Use autoconf-set values.
 447         (docdir, oldincludedir): Removed.
 448         * configure.in (AC_PREREQ): autoconf 2.5 or higher.
 449         (AC_PROG_INSTALL): Added.
 450         * configure: Rebuilt.
 451
 452 Mon Jun 24 14:19:07 1996  Ian Lance Taylor  <ian@cygnus.com>
 453
 454         * configure.in: Call AC_PROG_CC before running configure.host.
 455         * configure: Rebuild with autoconf 2.10.
 456
 457 Tue Jun  4 10:37:12 1996  Tom Tromey  <tromey@csk3.cygnus.com>
 458
 459         * Makefile.in (install): Don't check to see if tooldir exists.
 460         Make $(tooldir) and $(tooldir)/bin.
 461
 462 Mon Jun  3 12:33:38 1996  Ian Lance Taylor  <ian@cygnus.com>
 463
 464         * Makefile.in (end.h): Use explicit ./ when running end.
 465
 466 Sun May 19 21:05:31 1996  Rob Savoye  <rob@chinadoll.cygnus.com>
 467
 468         * func.c(bfd_load): Don't try to print the filename if the pfbd is
 469         NULL.
 470         * interf.c(sim_load): Pass the whole string, not just the first
 471         byte.
 472
 473 Version 2.1 26-02-96
 474 --------------------
 475
 476 * Fixed bug in "go" command.
 477
 478 version 2.0 05-02-96
 479 --------------------
 480
 481 * Fixed bug in interrupt force register (erc32.c).
 482
 483 * Change file load function to use bfd_openr.
 484
 485 * SIS should now be endian independent.
 486
 487 version 1.8 24-11-95
 488 --------------------
 489
 490 * Fixed FPU timing - some sequences of FPU instructions did not calculate
 491   the resource dependencies right.
 492
 493 * Corrected STDFQ when qne = 0 (again!). The ftt is set to sequence_error
 494   but no FPU trap is generated.
 495
 496 version 1.7.1 31-10-95
 497 --------------------
 498
 499 * Corrected STDFQ when qne = 0. Now, a trap is immidiately generated but
 500   the FPU stays in execute mode.
 501
 502 * Corrected JMPL and RETT timing (these instructions takes two cycles).
 503
 504
 505 version 1.7 25-10-95
 506 --------------------
 507
 508 * Interrupt during annuled instruction corrupted return address - fixed.
 509
 510
 511 version 1.6.2 25-10-95
 512 --------------------
 513
 514 * Added -DFAST_UART to Makefile
 515
 516
 517 version 1.6.1 24-10-95
 518 --------------------
 519
 520 * Fixed bug in STDFQ which caused bus error
 521
 522
 523 version 1.6 02-10-95
 524 --------------------
 525
 526 * Modified srt0.s to include code that initiates registers in IU and FPU
 527   and initializes the data segment. The simulator 'load' command does not
 528   longer initialize the data segment!
 529
 530 * Corrected MEC timer operation; scalers now divide the frequency by
 531   (scaler_value + 1).
 532
 533 * MEC breakpoints are not checked during store operation
 534
 535
 536 version 1.5 14-09-95
 537 --------------------
 538
 539 * Fixed some bugs in the cycle counting for IU & FPU instructions.
 540
 541 * Fixed bug that allowed an annuled instruction to cause memory exception.
 542
 543 * The *ws parameter in mem.c should now contain the number of waitstates
 544   required by the memory access (was total number of cycles).
 545
 546 * The supplied srt0.s now clears the BSS (thanks Joel).
 547
 548 version 1.4 22-08-95
 549 --------------------
 550
 551 * Added a '-g' switch to enable/disable the GNU readline(), which cause
 552 some problems on solaris 2.x machines.
 553
 554 * Enabled MEC watchpoint and breakpoint function to mem.c. Performance
 555 may suffer a bit ...
 556
 557 NOTE: The UARTs are now connected to /dev/ttypc and /dev/ttypd.
 558
 559 version 1.3 26-07-95
 560 --------------------
 561
 562 * Fixed bug in mulscc instruction (how could that ever have worked?)
 563
 564 * Fixed bug in UART B (flushed characters on UART A), thanks Paul.
 565
 566 version 1.2 13-07-95
 567 --------------------
 568
 569 * Fixed bug in interrupt handling (wrong interrupt selected when more that
 570 one interrupt pending)
 571
 572 * Fixed updating of condition codes during logical instructions (carry and
 573 overflow were not reset)
 574
 575 * Fixed bug in WRTBR (tt field was wrongly over-written)
 576
 577 version 1.1 07-07-95
 578 --------------------
 579
 580 * Fixed several bugs in the interrupt handler and callback routines.
 581 (reported by Paul Warren, Alsys)