sim/ppc/ChangeLog

   1 Mon Nov  6 10:39:28 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
   2
   3         * Makefile.in (config.status): Remove references to config.make
   4         and config.hdr.
   5
   6         * config.{make,hdr}: Delete, no longer used.
   7         * build-psim: Ditto.
   8
   9 Mon Nov  6 20:49:56 1995  Andrew Cagney  <cagney@highland.com.au>
  10
  11         * sim_calls.c (sim_open): Fix parsing of `target sim' options.
  12
  13         * device_tree.c (device_tree_add_string): Wasn't saving the value
  14         of the string being entered into the tree.
  15
  16         * psim.c (create_filed_device_tree): Not terminating string device
  17         names with a null.
  18
  19         * psim.c (psim_create): Use `env' instead of
  20         `environment-architecture' to be consistent with configure.
  21         Reconize user/uea, virtual/vea and operating/oea.
  22
  23 Sat Nov  4 12:29:45 1995  Fred Fish  <fnf@cygnus.com>
  24
  25         * core.c:  Rename to corefile.c
  26         * core.h:  Rename to corefile.h
  27         * inline.c: Include corefile.h, renamed from core.h.
  28         * cpu.h: Include corefile.h, renamed from core.h
  29         * vm.c: Include corefile.h, renamed from core.h
  30         * corefile.c: Include corefile.h rather than core.h
  31         * README.psim (KNOWN PROBLEMS): Change core.* references to corefile.*
  32         references.
  33         * Makefile.in (CPU_H): Change core.h to corefile.h
  34         (vm.o):  Change dependency to corefile.h
  35         (LIB_SRC): Change core.c to corefile.c.
  36         (LIB_OBJ): Change core.o to corefile.o.
  37         (corefile.o):  Change dependencies to corefile.c, corefile.h.
  38
  39 Fri Nov  3 11:37:24 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
  40
  41         * ppc-instructions (data cache instructions): Make all data cache
  42         instructions nops instead of invalid instructions.
  43
  44         * Makefile.in (CONFIG_CFLAGS): Add ALIGNMENT_CFLAGS and
  45         TIMEBASE_CFLAGS which weren't included.
  46
  47 Thu Nov  2 08:54:04 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
  48
  49         * Makefile.in: Uncomment built file dependencies.
  50
  51         * configure.in: Rewrite --enable-sim switch handling to use the
  52         autoconf builtins so it works correctly if the configure or
  53         Makefile.in files are modified and make decides to rebuild
  54         Makefile.  Also document all of the --enable-sim switches
  55         supported.  Check whether getrusage and sys/resource.h are
  56         supported.
  57         * config.in: Regenerate.
  58         * configure: Regenerate.
  59         * Makefile.in: Add support for all of the variables set with
  60         --enable-sim switches.
  61
  62         * Makefile.in (clean): make clean now removes all built sources as
  63         well.
  64
  65         * cpu.c: Use HAVE_STRING_H, HAVE_STRINGS_H, HAVE_UNISTD_H,
  66         HAVE_TIME_H, HAVE_SYS_TIMES_H, HAVE_SYS_RESOURCE_H defined in
  67         the generated config.h.
  68         * debug.c: Ditto.
  69         * device_tree.c: Ditto.
  70         * devices.c: Ditto.
  71         * dgen.c: Ditto.
  72         * emul_netbsd.c: Ditto.
  73         * igen.c: Ditto.
  74         * lf.c: Ditto.
  75         * misc.c: Ditto.
  76         * psim.c: Ditto.
  77         * registers.c: Ditto.
  78         * sim_calls.c: Ditt.
  79         * table.c: Ditto.
  80
  81
  82         * main.c (main): Call psim_print_info with verbose == 2.
  83
  84         * mon.c (mon_print_info): Align the cpu number and number of
  85         instructions fields.  Do not print an instruction category if the
  86         CPU did not execute any of those instructions.  Print out number
  87         of reads and writes.  If getrusage is supported, print out number
  88         of simulated instructins per second.
  89
  90         * configure.in: Add support for --enable-sim-opcode=stupid.
  91         * configure: Regenerate.
  92
  93 Wed Nov  1 23:46:59 1995  Andrew Cagney - aka Noid  <cagney@highland.com.au>
  94
  95         * std-config (INLINE_DEVICE_TREE): Don't inline either of
  96         device_tree.c or devices.c.  There is no significant gain.
  97
  98         * configure.in, Makefile.in: add --enable-sim-icache=[0-9]* and
  99         IGEN_ICACHE macro.
 100
 101 Wed Nov  1 23:46:59 1995  Andrew Cagney - aka Noid  <cagney@highland.com.au>
 102
 103         * igen.c (main), misc.h (target_a2i, i2target), misc.c: Add
 104         functions to convert between target and igen internal bit numbers.
 105         Make IO go through these functions. Add -b (bit size) and -h (high
 106         bit nr) options to igen.  Typical usage would be: ./igen -b 16 -h
 107         15 for a 16 bit instruction format with the msb given a number 15.
 108
 109 Wed Nov  1 22:17:32 1995  Andrew Cagney - aka Noid  <cagney@highland.com.au>
 110
 111         * dgen.c (main): Was outputting optarg even when it was NULL.
 112
 113 Tue Oct 31 23:48:33 1995  Andrew Cagney - aka Noid  <cagney@highland.com.au>
 114
 115         * vm_n.h (vm_data_map_load_N, vm_data_map_store_n), debug.h,
 116         debug.c: Add tracing of load/store unit (virtual) with -t
 117         load-store.
 118
 119 Tue Oct 31 21:44:01 1995  Andrew Cagney - aka Noid  <cagney@highland.com.au>
 120
 121         * std-config.h (WITH_ENVIRONMENT): Add USER_ENVIRONMENT which does
 122         not include things such as the time base and events.
 123
 124         * interrupt.c, sim_calls.c, cpu.h, vm.c, configure.in: Add UEA to
 125         all environment switches for above.
 126
 127         * psim.c (psim_create): ditto - new device tree node name is
 128         /options/environment-architecture with values user, virtual and
 129         operating.
 130
 131 Tue Oct 31 21:31:32 1995  Andrew Cagney - aka Noid  <cagney@highland.com.au>
 132
 133         * ppc-opcode-stupid: Third example of use of opcode table - this
 134         one expands all mtspr/mfspr and branch instructions.  Appears to
 135         give about a 10% gain in performance if everything enabled.  Also
 136         takes about 150mb of swap to build.
 137
 138 Wed Nov  1 10:49:48 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
 139
 140         * emul_netbsd.c (do_exit): Print arguments and close parenthesis
 141         if tracing, since exit doesn't go through emul_exit_call.
 142         (do_read): Print arguments if tracing.
 143         (do_write): Ditto.
 144         (do_open): Ditto.
 145         (do_break): Ditto.
 146         (do_kill): Ditto.
 147         (do_dup): Ditto.
 148         (do_sigprocmask): Replace trace with printing arguments if
 149         tracing.
 150         (do_ioctl): Print arguments if tracing.
 151         (do_umask): Ditto.
 152         (do_dup2): Ditto.
 153         (do_fcntl): Ditto.
 154         (do_gettimeofday): Ditto.
 155         (do_getrusage): Ditto.
 156         (do_fstatfs): Ditto.
 157
 158         * filter_filename.c: New file to provide filter_filename to strip
 159         the directory prefix from a file.
 160         * filter_filename.h: New include file to declare filter_filename.
 161
 162         * debug.h: Include filter_filename.h.
 163         (TRACE,DTRACE,ERROR): Use filter_filename on __FILE__.
 164
 165         * misc.h: Include filter_filename.h.
 166         (ASSERT): Use filter_filename on __FILE__.
 167
 168         * igen.c (lf_print_my_prefix): Use filter_filename on the filename
 169         argument.
 170
 171         * Makefile.in: Add filter_filename support.
 172
 173         * ppc-instructions (dcbi, icbi): Make these NOPs rather than
 174         invalid instructions.
 175
 176         * configure.in: Add support for more --enable-sim-* switches.
 177         Use config.make and config.hdr to write to Makefile and config.h
 178         respectively.  Don't rewrite Makefile, just append to it.
 179         * configure: Regenerate.
 180         * config.{make,hdr}: New shell scripts.
 181
 182         * Makefile.in: Remove all variables set by configure.in.
 183         (psim.o): Depend on $(BUILT_SRC) also.
 184
 185         * emul_netbsd.c (do_gettimeofday,do_getrusage): When comparing an
 186         integer, use 0, not NULL.
 187
 188 Tue Oct 31 15:20:04 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
 189
 190         * configure.in: Add support for --enable-sim-inline,
 191         --enable-sim-bswap, --enable-sim-cflags, --enable-sim-complex,
 192         --enable-sim-switch, --enable-sim-duplicate, --enable-sim-filter,
 193         and --enable-sim-endian switch to control various Makefile
 194         variables.
 195         * configure: Regenerate from configure.in.
 196         * Makefile.in: Add various Make variables that the various
 197         switches alter.
 198
 199         * std-config.h (DEFAULT_INLINE): Don't set this to 2 if using GCC
 200         and optimizing by default.
 201
 202 Fri Oct 27 19:26:27 1995  Andrew Cagney  <cagney@highland.com.au>
 203
 204         * bits.h (ROTL32, ROTL64): Were functions, made them macros, now
 205         make them functions again.  Appears 2.6.3 is confused by just a
 206         macro.
 207
 208 Thu Oct 26 18:31:58 1995  Andrew Cagney  <cagney@highland.com.au>
 209
 210         * ppc-endian.c (SWAP_8): Fix 8 byte swap!
 211
 212         * psim.c (psim_create): Not correctly checking that runtime
 213         configuration of things like ENDIAN, ENVIRONMENT and ALIGNMENT
 214         matched the compiled in ones.
 215
 216         * debug.h (ITRACE), igen.c: Tidy up more tracing flags -
 217         trace_semantics is now different to trace_idecode, the former
 218         checks the cache.
 219
 220 Tue Oct 24 21:54:13 1995  Andrew Cagney  <cagney@highland.com.au>
 221
 222         * ppc-instructions (mtsrin): Missing instruction
 223         * ppc-instructions (mfsrin): Missing instruction
 224         * ppc-instructions (eieio): Missing instruction
 225
 226 Tue Oct 24 20:55:29 1995  Andrew Cagney  <cagney@highland.com.au>
 227
 228         * build-psim: New shell script - see internals for usage,
 229         simplifies the process of building custom simulators.
 230
 231 Mon Oct 23 23:48:59 1995  Andrew Cagney  <cagney@highland.com.au>
 232
 233         * std-config.h (SEMANTICS_INLINE): Tidy up notes on each of the
 234         INLINE macros.  Make SEMANTICS_INLINE == 1 if DEFAULT_INLINE == 2.
 235         Don't use DEFAULT_INLINE to define REGISTERS_INLINE DEVICES_INLINE
 236         DEVICE_TREE_INLINE or INTERRUPTS_INLINE as none of these are on
 237         the instruction or data critical paths.
 238
 239         * FIXME: need to set up OS_EMUL_INLINE/EMUL_GENERIC_INLINE but
 240         not on critical path.
 241
 242         * FIXME: devices.c/emul_netbsd.c would benefit (slightly) from
 243         the inclusion of device_tree.c/emul_generic.c.
 244
 245 Mon Oct 23 00:31:50 1995  Andrew Cagney  <cagney@highland.com.au>
 246
 247         * os_emul.[hc], emul_generic.[hc], emul_netbsd.[hc]: replace
 248         system.[hc].  Start of suport for multiple emulations and
 249         emulation state (os_emul object).
 250
 251         * emul_generic.[hc]: Start of code to implement proper system call
 252         tracing (from spy).
 253
 254 Sun Oct 22 21:33:51 1995  Andrew Cagney  <cagney@highland.com.au>
 255
 256         * cpu.h, cpu.c (cpu_init): New function, zero the registers before
 257         the processor is started. Fixes problem of registers being
 258         undefined when restarting from within gdb.
 259
 260         * cpu.h, cpu.c (cpu_flush_icache): New function, flushes the
 261         instruction cache (if present).  Fixes problem of cpu caching gdb
 262         breakpoint instructions.
 263
 264         FIXME: PSIM sometimes aborts calling error(), it should instead
 265         call sim_error() say which takes care of housekeeping such as
 266         saving the CIA before calling error.
 267
 268         * NOTE: cpu_flush_cache() instead of cpu_synchronize_context() is
 269         used when restarting a simulation because the latter has the
 270         unwanted side effect (well I as a kernel hacker think it is) of
 271         performing an isync when the instruction stream doesn't contain
 272         one.
 273
 274 Sun Oct 22 19:27:48 1995  Andrew Cagney  <cagney@highland.com.au>
 275
 276         * mon.h (new), mon.c (new), std-config.h (WITH_MON): Performance
 277         monitoring module. Counts both instructions issued and
 278         load/stores.
 279
 280         * NOTE: mon does not contain to count instruction loads as this
 281         information is already available from the mon_issue() hook.
 282
 283         * FIXME: mon doesn't have access to register usage information.
 284         This is needed if the user wants to monitor things like register
 285         stalls.
 286
 287         * igen.c (lf_print_c_semantic), vm_n.h: Add counting code.
 288
 289         * psim.h, psim.c (psim_create), cpu.h, cpu.c (cpu_create): Attach
 290         a common monitor to each of the cpus. Delete
 291         cpu_increment_number_of_insns() and cpu_get_number_of_insns()
 292         replaced by copied code in mon.[hc].
 293
 294 Sun Oct 22 18:42:45 1995  Andrew Cagney  <cagney@highland.com.au>
 295
 296         * sim_calls.c, main.c, psim.c (psim_create): always create
 297         `WITH_SMP' cpus.  The actual number of CPU's active in a
 298         simulation run is taken from the device node: /init/smp (an
 299         integer). WITH_SMP changed to 2 (remember to put it back to 0).
 300
 301 Fri Oct 20 17:26:54 1995  Andrew Cagney  <cagney@highland.com.au>
 302
 303         * system.c: More system call emulation.  If code appears NetBSD
 304         specific, make conditional to being compiled on a NetBSD system
 305         (sigh).
 306
 307 Wed Oct 18 23:02:20 1995  Andrew Cagney  <cagney@highland.com.au>
 308
 309         * Makefile.in, gen.c(delete), igen.c(new), dgen.c(new),
 310         lf.[ch](new), table.[ch](new): Split into two generators - igen
 311         that outputs the instruction tables and dgen that outputs the spr
 312         tables.  Add -f (filter out) flag to igen to filter out certain
 313         instructions (ex 64 bit ones) from the created tables.  Include
 314         $(LIBIBERTY_LIB) in link options in case host lacks some libc
 315         functions.
 316
 317         * NOTE: igen, since it was originally written for the
 318         PowerPC/RS6000, things the MSB is 0 and the LSB is 63{31}.
 319
 320         * Makefile.in, std-config.h, ppc-cache-rules(new),
 321         ppc-opcode-complex(new), ppc-opcode-simple(new): (for igen) Create
 322         cache-rule and opcode-rule tables from macros found std-config.h.
 323         Delete corresponding macro's from std-config.h.
 324
 325         * FIXME: under this new igen scheme, when playing around with igen
 326         options, you'll find that depenencies don't work very well.
 327
 328         * igen.c (gen_itable_c, gen_itable_h), Makefile.in: code to output
 329         an table of all the instructions.  Code to output a type
 330         enumerating all the instructin names.
 331
 332         * igen.c(lf_print_c_semantic): Move call to increment instruction
 333         counter so that it occures _after_ the instruction has been fully
 334         validated, was double counting illegal/invalid instructions.  Add
 335         conditional so only compiled in when WITH_PROFILE enabled (enabled
 336         by default).
 337
 338         * igen.c, cpu.h, cpu.c(cpu_increment_number_of_insns): Include
 339         itable.h, count individual instruction types not just total,
 340         adjust reporting functions to output this.
 341
 342         * ppc-instructions (64 bit Load Doubleword with Update Indexed):
 343         Had 32./ instead of 31./
 344
 345         * ppc-instructions (64 bit Store Double Word Conditional Indexed):
 346         bitrot - updated to use newer CR register operators.
 347
 348         * ppc-instructions (64bit Floating Convert from Integer
 349         Doubleword): Correct call to Round_Float().
 350
 351 Mon Oct 16 00:31:20 1995  Andrew Cagney  <cagney@highland.com.au>
 352
 353         * basics.h: #include "sim_callbacks.h" earlier so that its
 354         prototypes are declared in all other header files.
 355
 356         * bits.h, bits.c, idecode_expression.h (ROTL32, ROTL64): Update
 357         doc in bits.h, remove dead code in bits.c, move ROTL32/ROTL64 into
 358         bits.h.
 359
 360         * FIXME: the bits.h/bits.c macro's should be replaced with
 361         (inline) c functions.
 362
 363         * cpu.c(cpu_add_commas), device_tree.h, device_tree.c(scand_*):
 364         Add size of buffer argument to functions writing a string into a
 365         buffer.  Check for buffer overflow.
 366
 367 Sun Oct 15 22:16:11 1995  Andrew Cagney  <cagney@highland.com.au>
 368
 369         * devices.h, devices.c, debug.h, debug.c: add macro's for tracing
 370         of each device.  Make parameter names consistent so macros work.
 371         Use macro's in device functions.
 372
 373         * device_tree.c, devices.h, devices.c: include path to device in a
 374         devices node when creating it.
 375
 376         * device_tree.c, debug.h, debug.c: Add tracing of `device-tree'.
 377
 378         * core.c: add tracing of core-device, adjust parameter names in
 379         core functions to be consistent with those in devices*.
 380
 381 Sun Oct 15 20:33:20 1995  Andrew Cagney  <cagney@highland.com.au>
 382
 383         * debug.h, debug.c (trace_option): New function. Parses the trace
 384         option, updating the trace array.
 385
 386         * debug.h, debug.c (trace_usage): New function. Outputs the list
 387         of all possible trace options.
 388
 389         * sim_calls.c (sim_open), main.c (main): Use new trace_option() to
 390         parse trace options specified with the simpler -t flag.  Adjust
 391         usage.
 392
 393         * FIXME: basic parsing of command line options is still duplicated
 394         by main.c and sim_calls.c
 395
 396 Thu Oct 26 10:42:28 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
 397
 398         * Makefile.in (clean): Delete *.i and *.out files.
 399
 400         * ppc-endian.c (SWAP_n): Add SET argument to allow use of SWAP
 401         macros for either assignment or return.  Fix SWAP_8 to use a
 402         union, and two SWAP_4's.  Delete SWAP_N, since nobody uses it now.
 403         (ENDIAN_N): Add SET argument to SWAP_n calls.  Delete macro defs
 404         that hardwired swapping on/off, let optimizer delete dead code.
 405
 406         * main.c (main): Add printf that we caught a signal and print out
 407         the failing address.
 408
 409 Thu Oct 19 21:43:39 1995  Fred Fish  <fnf@fishfood.amigalib.com>
 410
 411         * Makefile.in:  Remove tabs from otherwise empty line.
 412         Confuses many non-GNU versions of "make".
 413
 414 Wed Oct 18 08:51:25 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
 415
 416         * Makefile.in (clean): Delete files produced by gen.
 417
 418 Mon Oct 16 17:34:24 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
 419
 420         * gen.c (lf_print_c_semantic_function): Move counting # of
 421         instructions here so it works with caching.
 422         (gen_idecode_c): Move from here.
 423
 424 Wed Oct 11 17:13:15 1995  Andrew Cagney  <cagney@highland.com.au>
 425
 426         * gen.c, ppc-instructions, psim.c: Fix code for generating
 427         cracking instruction cache.  Delete the code that cached just the
 428         result from doing an instruction lookup - this ran slower than no
 429         cache at all.
 430
 431 Fri Oct 13 09:58:43 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
 432
 433         * Makefile.in (gen.o): Include $(INLINE_CFLAGS).
 434
 435         * debug.h (ppc_trace): Rename from trace, to avoid a conflict with
 436         TCL when gdb is linked with the simulator.
 437         * debug.c (ppc_trace): Ditto.
 438         * sim_calls.c (sim_open): Change trace -> ppc_trace.
 439         * main.c (main): Ditto.
 440
 441         * cpu.c (cpu_add_commas): Remove extra static.
 442
 443 Thu Oct 12 11:35:53 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
 444
 445         * Makefile.in (psim.o): Now that inlines are turned on, make
 446         psim.o depend on all sources.
 447
 448         * cpu.c (cpu_add_commas): New function to format a long with
 449         commas.
 450         (cpu_print_info): Use it to print number_of_insns.
 451
 452         * ppc-endian.c (SWAP_n): New macros to speed up byte swapping for
 453         2, 4, and 8 bytes.
 454         (ENDIAN_N): If both target and host byte orders are known, don't
 455         bother testing CURRENT_{TARGET,HOST}_BYTE_ORDER.
 456
 457         * ppc-endian.h (target specific H2T_n/T2H_n macros): Remove #if 0
 458         to allow target specific H2T_n/T2H_n macros to be used.
 459         (htonl, ntohl): If compiled on a 486 by GCC and WITH_BSWAP is
 460         non-zero, redefine the htonl/ntohl macros to use the BSWAP instead
 461         of the 3 instruction sequence that runs on 386s.
 462
 463         * std-config.h (WITH_{HOST,TARGET}_BYTE_ORDER): Don't override if
 464         specified on the compile line.
 465         (WITH_BSWAP): If not defined, define as 0.
 466
 467         * Makefile.in (INLINE_CFLAGS): Add -DDEFAULT_INLINE=2 to add
 468         default inline support.  Pass INLINE_CFLAGS when compiling.
 469
 470         * devices.{h,c} (unimp_device_ioctl): Use STATIC_DEVICES, not
 471         INLINE_DEVICES since GCC doesn't like inline functions that
 472         accept variable arguments.
 473         (stack_ioctl_callback): Make function just static because GCC
 474         doesn't like inline functions that accept variable arguments.
 475
 476         * devices.h (STATIC_DEVICES): Define as empty if not defined.
 477
 478         * inline.c: Correct pathnames of included C files to match current
 479         implementation.
 480
 481         * inline.h (STATIC_DEVICES): If DEVICES_INLINE is defined to be
 482         non-zero, define STATIC_DEVICES to be static.
 483
 484         * std-config.h (INLINE): If GNU C and optimizing, define this as
 485         __inline__.
 486         (DEFAULT_INLINE): If not defined, define as 0.
 487         (ENDIAN_INLINE): If not defined, define as DEFAULT_INLINE.
 488         ({CORE,VM,CPU,EVENTS,REGISTERS,INTERRUPTS}_INLINE): Ditto.
 489         ({SPREG,IDECODE}_INLINE): Ditto.
 490
 491 Wed Oct 11 17:13:15 1995  Andrew Cagney  <cagney@highland.com.au>
 492
 493         * ppc-instructions: Initial cut of floating point suport added.
 494         Of note include - use of host IEEE floating point instructions,
 495         use of PowerPC manual pseudo code to handle the FPSCR.  It is not
 496         currently a pretty sight.
 497
 498         * memory_map.h, memory_map.c, memory_map_n.h, core.h, core.c:
 499         merge into core.h, core.c, core_n.h. The type memory_map replaced
 500         with core_map.  This removes a level of pointer indirection when
 501         translating an address.
 502
 503         * memory_map.h, memory_map.c, memory_map_n.h: delete.
 504
 505         * Makefile.in et.al (sorry): tweek to use new core, core_map and
 506         core.h.
 507
 508 Wed Oct 11 12:10:26 1995  Andrew Cagney  <cagney@highland.com.au>
 509
 510         * sim_calls.c, main.c: Add -g (trace_gdb) option, add tracing to
 511         most of the other functions in sim_calls.c.
 512
 513         * basics.h (CONCAT3), memory_map.c, memory_map_n.h, Makefile.in:
 514         Add macros to better cover up `generic' code.  Makes it possible
 515         to step through the generic code!
 516
 517         * vm.c, vm_n.h, Makefile.in: ditto
 518
 519 Tue Oct 10 15:42:59 1995  Andrew Cagney  <cagney@highland.com.au>
 520
 521         * devices.h, devices.c, memory_map.h, memory_map.c: Changed
 522         callback interface so that there is a read/write buffer but no
 523         read/write_word.  VEA default memory read/write handler sometimes
 524         couldn't resolve an access and of those some were for a memory
 525         fault and some were because gdb was making a bogus request.
 526
 527         * devices.h, devices.c, memory_map.h, memory_map.c, vm.h, vm.c:
 528         eliminate transfer_mode (raw or cooked) parameter from read/write
 529         buffer.
 530
 531 Fri Oct  6 20:23:56 1995  Andrew Cagney  <cagney@highland.com.au>
 532
 533         * ppc-instructions (fmul, fmuls): correct instruction format - had
 534         FRB instead of FRC.
 535
 536 Wed Oct  4 17:31:12 1995  Andrew Cagney  <cagney@highland.com.au>
 537
 538         * psim.c, device_tree.h, device_tree.c, devices.c (printd_*,
 539         scand_*): new functions to parse/print fields in device names
 540         while hiding any machine dependency.
 541
 542         * devices.c, psim.c: Change the stack init code so that it is
 543         handled by a device.  Arguments passed across using a device ioctl
 544         (hack).
 545
 546         * devices.h, devices.c: device ioctl callback changed to allow a
 547         variable number of arguments.  This gives greater flexability and
 548         greater chance of bugs.
 549
 550 Tue Oct  3 22:01:56 1995  Andrew Cagney  <cagney@highland.com.au>
 551
 552         * main.c (printf_filtered, error): Missing va_end() to close off
 553         variable argument use.
 554
 555         * Makefile.in (tmp-gencode): comment out hack to get around some
 556         versions of make not handling files being created as side-effects.
 557
 558         * gen.c (lf_open): Add -n (real_file_name) option.  Specifies an
 559         alternative file name to use in output files for things like #line
 560         macros.
 561
 562         Makefile.in (tmp-gencode): Use gen -n so that debug info is
 563         correct.
 564
 565         * Makefile.in (TARGETLIB): Use this instead of libsim.a in the
 566         Makefile.
 567
 568 Sat Oct  7 22:40:59 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
 569
 570         * sim_calls.c (sim_set_callbacks): Define new function.
 571
 572 Fri Oct  6 17:23:10 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
 573
 574         * psim.c (psim_print_info): Print exit status or signal number.
 575
 576 Mon Oct  2 11:46:37 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
 577
 578         * cpu.c (struct _cpu): Add number_of_insns field to trace how many
 579         instructions are executed.
 580         (cpu_increment_number_of_insns): New function to increment the
 581         number of instructions issued.
 582         (cpu_get_number_of_insns): New function to return the number of
 583         instructions issued.
 584         (cpu_print_info): New function to print cpu related information.
 585         At present, print the number of instructions executed.
 586
 587         * gen_idecode_c: Emit call to cpu_increment_number_of_insns within
 588         idecode_issue.
 589
 590         * psim.c (psim_print_info): New function to iterate over each of
 591         the CPU's calling cpu_print_info.
 592
 593         * psim.h,cpu.h: Add new declarations.
 594
 595         * sim_calls.c (sim_open): Add argument processing to add the same
 596         switches main.c accepts for the standalone processor.
 597         (sim_close): Call psim_print_info if -I.
 598
 599         * main.c (main): Add comment saying to update sim_calls.c when
 600         adding switches.  Add -I to call psim_print_info when done.
 601         (usage): Update usage message.
 602
 603 Sun Oct  1 13:52:59 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
 604
 605         * main.c (printf_filtered): Correct to match new prototype.
 606
 607 Sat Sep 30 20:47:05 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
 608
 609         * sim_callbacks.h (printf_filtered): Correct prototype.
 610
 611 Thu Sep 21 16:26:49 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
 612
 613         * device_tree.c (OEA_MEMORY_SIZE): Define if not defined to
 614         0x100000.
 615         (clayton_memory_size): Define as OEA_MEMORY_SIZE.
 616
 617         * std-config.h (WITH_TRACE): Default to 1 now.
 618
 619         * psim.c (write_stack_arguments): Don't write any stack arguments
 620         if OEA.
 621
 622         * main.c (main): Switch to using getopt.  Make -p also set
 623         trace_semantics.  Make -a turn on all trace flags.  Make -C turn
 624         on console tracing.
 625
 626         * device_tree.c (create_option_device_node): Assume a program is
 627         OEA if the start address is < 4096, not just == 0.
 628
 629 Wed Sep 20 13:36:06 1995  Ian Lance Taylor  <ian@cygnus.com>
 630
 631         * Makefile.in (maintainer-clean): New synonym for realclean.
 632
 633 Sun Sep 10 10:23:56 1995  Michael Tiemann  <tiemann@axon.cygnus.com>
 634
 635         * registers.c (register_description): Add gdb synonyms for cr
 636         (cnd) and msr (ps).
 637
 638 Fri Sep  8 13:16:10 1995  Ian Lance Taylor  <ian@cygnus.com>
 639
 640         * Makefile.in (install): Don't install in $(tooldir).
 641
 642         * configure.in: Call AC_CONFIG_HEADER.  Don't try to use
 643         bfd/hosts/*.h file or bfd/config/*.mh file.  Call AC_PROG_CC and
 644         AC_PROG_RANLIB.  Substitute in values for CFLAGS, HDEFINES, AR,
 645         and CC_FOR_BUILD.  Call AC_CHECK_HEADERS for various header files.
 646         Touch stamp.h if creating config.h.
 647         * configure: Rebuild.
 648         * config.in: New file, created by autoheader.
 649         * Makefile.in (AR): Define as @AR@.
 650         (CC): New variable, defined as @CC@.
 651         (CFLAGS): Define as @CFLAGS@.
 652         (CC_FOR_BUILD): New variable, defined as @CC_FOR_BUILD@.
 653         (RANLIB): Define as @RANLIB@.
 654         (HDEFINES, TDEFINES): New variables.
 655         (@host_makefile_frag@): Remove.
 656         (mostlyclean): Make the same as clean, not distclean.
 657         (clean): Remove config.log.
 658         (distclean): Remove config.h and stamp-h.
 659         (Makefile): Don't depend upon @frags@.  Just rebuild Makefile when
 660         invoking config.status.
 661         (config.h, stamp-h): New targets.
 662         (gen, gen.o): Build with CC_FOR_BUILD, not CC.
 663         (ppc-config.h): Rename from old config.h build.
 664         * (basics.h,gen.c,ppc-endian.c,psim.c): Include ppc-config.h.
 665
 666 Fri Sep  8 09:51:03 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
 667
 668         * configure{,.in}: Don't include sysdep.h from bfd, since bfd no
 669         longer provides it.
 670         * basics.h (sysdep.h): Don't include it.
 671         * Makefile.in (BASICS_H): Remove sysdep.h.
 672
 673 Wed Sep  6 13:25:42 1995  Andrew Cagney  <cagney@highland.com.au>
 674
 675         * core.c (core_add_data): First growth of bss was being put at
 676         wrong address (0) instead of &end.
 677
 678         * core.c (core_add_stack, core_add_data): Was not handling case
 679         where bss/stack is grown across the current end-of-{bss,stack}.
 680
 681 Wed Sep  6 00:46:10 1995  Andrew Cagney  <cagney@highland.com.au>
 682
 683         * system.c (system_call): Fix SYS_break - was aligning bss to a
 684         page boundary instead of just an 8 byte one; On first call sbrk(0)
 685         != sbrk(0).
 686
 687 Thu Aug 24 14:48:54 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
 688
 689         * Makefile.in (install): Fix install rule.
 690
 691 Tue Aug 22 09:31:18 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
 692
 693         * system.c (system_call): Add read support.
 694
 695         * main.c (main): -t sets trace_device_tree.  Correct usage message
 696         to current reality.
 697
 698         * device_tree.c (update_memory_node_for_section): Make tracing
 699         output line up.  If not code or readonly, assume that the section
 700         is a data section and has read/write permissions.  Add readonly
 701         support.
 702
 703         * core.c (create_core_from_addresses): Print end address in traces
 704         and make tracing output line up.
 705
 706         * Makefile.in: Rewrite from Makefile to work with the Cygnus
 707         environment, and support compiling in a different directory than
 708         the sources reside in.
 709
 710         * ppc-endian.h: Rename from endian.h so that it doesn't get
 711         confused with /usr/include/sys/endian.h on Linux.  Add Linux
 712         endian support.
 713
 714         * ppc-endian.c: Rename to be consistant with ppc-endian.h.
 715         Include ppc-endian.h, not endian.h.
 716
 717         * basics.h (sysdep.h): Include sysdep.h that configure makes.
 718         Include ppc-endian.h, not endian.h.
 719
 720         * std-config.h: Rename from ppc-config.  Put #ifndefs around most
 721         configuration macros, so they can be overridden via CFLAGS.  By
 722         default, turn off tracing.
 723
 724         * configure.in: Clone from other simulator targets.
 725         * configure: Generate via autoconf from configure.in.
 726
 727 Sat Aug 19 09:05:32 1995  Andrew Cagney  <cagney@highland.com.au>
 728
 729         * ppc-instructions: fix srawi (was geting XER[CA] real wrong).
 730
 731         * interrupts.c (data_storage_interrupt): allow stack to grow by
 732         upto one MB per increment.
 733
 734         * ppc-instructions: divw was computing rA / rA not rA / rB
 735
 736         * main.c (main): really stupid. Wasn't exiting with correct status
 737
 738 Fri Aug 18 00:38:01 1995  Andrew Cagney  <cagney@highland.com.au>
 739
 740         * system.c (system_call): add system calls kill(2) and getpid(2).
 741
 742         * main.c (main): Check/return exit status when simulation
 743         finishes.
 744
 745 Thu Aug 17 14:29:18 1995  Andrew Cagney  <cagney@highland.com.au>
 746
 747         * device_tree.c (create_option_device_node): Alignment rules (at
 748         least for the moment) now are for strict alignment only for LE OEA
 749         mode.  (Because of compiler problems).
 750
 751         * system.c (system_call) SYS_exit: Wasn't exiting with correct status.
 752
 753 Thu Aug 17 01:16:38 1995  Andrew Cagney  <cagney@highland.com.au>
 754
 755         * vm.c (DEFINE_VM_DATA_MAP_WRITE_N): For miss aligned transfer
 756         forgot to return.
 757
 758         * system.c (system_call): didn't page align break argument before
 759         determining increment break increment.
 760
 761         * psim/ppc: Re-arange entire directory structure so that
 762         everything lives in the one directory.  While a pain for cleaning,
 763         makes building across multiple architectures much simpler.
 764
 765         * devices.c, device_tree.c: Added code that provides a simple
 766         illustration of how an interrupt control device could be
 767         implemented.
 768
 769         * devices.c: Added code so that the dumb console device can read
 770         (from stdin) as well as write to stdout.
 771