sim/ppc/ChangeLog

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