sim/ppc/ChangeLog

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