sim/igen/ChangeLog

   1 Fri Sep 19 10:36:30 1997  Andrew Cagney  <cagney@b1.cygnus.com>
   2
   3         * igen.c (print_function_name): Put the format name after the
   4         function / instruction name, not before.
   5
   6 Tue Sep 16 11:01:07 1997  Andrew Cagney  <cagney@b1.cygnus.com>
   7
   8         * gen.c (insns_bit_useless): Don't treat string fields restricted
   9         to a range of values as useless.
  10
  11 Mon Sep 15 15:47:21 1997  Andrew Cagney  <cagney@b1.cygnus.com>
  12
  13         * igen.c (gen_run_c): Handle non-multi-sim case.
  14
  15         * gen-support.c (gen_support_h): Define SD_ - to replace _SD.
  16         Define CIA from cia.
  17
  18 Thu Sep 11 10:27:39 1997  Andrew Cagney  <cagney@b1.cygnus.com>
  19
  20         * gen-semantics.c (print_semantic_body): Trace the instruction
  21         after it has been validated.
  22         (print_semantic_body): Count the instruction using sim-profile.
  23
  24 Wed Sep 10 13:35:37 1997  Andrew Cagney  <cagney@b1.cygnus.com>
  25
  26         * gen-itable.c (gen_itable_h): Collect summary info on instruction
  27         table when traversing it.
  28         (gen_itable_h): Output an enum defining the max size of each of
  29         the itable string members.
  30
  31 Tue Sep  9 03:30:26 1997  Andrew Cagney  <cagney@b1.cygnus.com>
  32
  33         * igen.c (gen_run_c): New function. Generate sim_engine_run that
  34         looks at the currently selected architecture.
  35
  36         * gen-engine.c, gen-idecode.c: Add multi-sim support - generate
  37         one engine per model.
  38
  39         * gen-semantics.c, gen-icache.c gen-support.c:
  40         Update.
  41
  42         * ld-insn.h, ld-insn-h (load_insn_table): Rewrite.  table.h only
  43         returns a line at a time.  Parse multi-word instructions.  Add
  44         multi-sim support.
  45
  46         * table.h, table.c: Simplify.  Only parse a single line at a time.
  47         ld-insn can handle the rest.
  48
  49         * filter.h, filter.c (filter_parse, filter_add, filter_is_subset,
  50         filter_is_common, filter_is_member, filter_next): New filter
  51         operations.
  52         (dump_filter): Ditto.
  53
  54         * gen.h, gen.c: New file.  Takes the insn table and turns it into
  55         a set of decode tables and semantic functions.
  56
  57         * ld-insn.c: Copy generator code from here.
  58         * gen.c: To here.
  59
  60 Fri Aug  8 11:43:45 1997  Andrew Cagney  <cagney@b1.cygnus.com>
  61
  62         * misc.h (NZALLOC): Allocate an N element array of TYPE.
  63
  64         * table.h, table.c: Simplify table parser so that it only
  65         understands colon delimited lines and code blocks.
  66         (table_read): Parse '{' ... '}' as a code block.
  67         (table_print_code): New function, print out a code block to file.
  68         (main): Add suport for standalone testing.
  69
  70         * ld-insn.h, ld-insn.c:
  71
  72
  73 Mon Sep  1 11:41:12 1997  Andrew Cagney  <cagney@b1.cygnus.com>
  74
  75         * gen-idecode.c (error_leaf_contains_multiple_insn): Make static.
  76         (print_jump_definition, print_jump, print_jump_internal_function,
  77         print_jump_insn, print_jump_until_stop_body): Delete, moved to
  78         sim-engine.c
  79
  80         * igen.c (print_itrace_format): Delete unused variable chp.
  81         (gen-engine.h): Include.
  82
  83         * table.c (current_file_name, current_line_entry,
  84         current_line_entry): Make static.
  85
  86 Wed Aug  6 12:31:17 1997  Andrew Cagney  <cagney@b1.cygnus.com>
  87
  88         * configure.in: Define AR_FOR_BUILD, AR_FLAGS_FOR_BUILD,
  89         RANLIB_FOR_BUILD and CFLAGS_FOR_BUILD.
  90         * configure.in: Include simulator common/aclocal.m4.
  91         * configure.in: Add --enable-sim-warnings option.
  92         * configure: Re-generate.
  93
  94         * Makefile.in: Use.
  95
  96         * Makefile.in (tmp-filter): New rule.
  97         (igen.o, tmp-table, tmp-ld-decode, tmp-ld-cache, tmp-ld-insn,
  98         ld-decode.o, ld-cache.o, ld-insn.o): Fix dependencies.
  99
 100         * gen.h, gen.c: New files.
 101
 102         * Makefile.in (gen.o, tmp-gen): New rules, update all
 103         dependencies.
 104
 105 Tue Jun 24 11:46:45 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 106
 107         * ld-insn.c (load_insn_table): Accept %s as a function type.
 108
 109 Thu Jun  5 17:14:32 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 110
 111         * igen.c (print_itrace_prefix): Move printing of insn prefix to
 112         here.
 113         (print_itrace_format): Drop printing of MY_NAME in instruction
 114         trace.  Printing of insn prefix moved.
 115         (print_itrace): Ditto.
 116
 117 Fri May 30 11:27:37 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 118
 119         * gen-icache.c (print_icache_function_header): Pass
 120         table_line_entry instead of separate file and line.
 121
 122         * table.c (table_entry_read): Set assembler source file/line-nr to
 123         the current not initial file.
 124         (table_entry_read): Fix line numbering of source files.
 125
 126         table.h (table_line_entry): New structure.  Exactly specifies a
 127         source file/line-nr.
 128         (table_*_entry): Add this to all.
 129
 130         table.c (table_entry_print_cpp_line_nr): Change to use values from
 131         a table_line_entry struct.
 132         (table_entry_read): Save table_line_entry in all structures read.
 133
 134         gen-icache.c, gen-support.c, gen-idecode.c, gen-semantics.c,
 135         gen-model.c: Update all references.
 136
 137 Thu May 29 10:29:57 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 138
 139         * igen.c (print_my_defines): Define MY_NAME - a string.  For
 140         MY_PREFIX, undefine the name of the function incase some dumb
 141         header defined it.  it.
 142         (print_itrace): Use MY_NAME not MY_PREFIX.
 143
 144         * lf.c (lf_write): New function write an N character buffer to the
 145         file.
 146
 147         * igen.c (print_itrace): When available, use the assembler to
 148         print the insn-trace.
 149         (print_itrace_prefix): New function, print first part of call to
 150         print_one_insn.
 151         (print_itrace_format): New function, print fmt argument for
 152         print_one_insn.
 153
 154         * table.c (table_entry_read): Save any assembler lines instead of
 155         discarding them.
 156
 157 Wed May 28 09:55:29 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 158
 159         * gen-icache.c (print_icache_body): Process immeds.
 160
 161         * gen-semantics.c (print_semantic_body): When computing NIA, skip
 162         any immed words that follow the instruction word.
 163
 164         * ld-insn.c (parse_insn_format): Parse immeds appended to an
 165         instruction.
 166
 167         * igen.c (main): Allow any register to be specified as the zero
 168         register.
 169         (semantic_zero_reg): Global, index to zero register.
 170
 171         * gen-semantics.c (print_semantic_body): Zero selected register.
 172
 173 Tue May 27 14:12:32 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 174
 175         * igen.h: Stop options and code gen type bit masks overlaping.
 176
 177 Fri May 23 12:01:08 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 178
 179         * gen-semantics.c (print_semantic_body): Incorrect test for
 180         zero-r0 code.
 181
 182 Fri May 16 14:32:31 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 183
 184         * gen-semantics.c (print_semantic_body): Use common sim-engine
 185         interface.
 186
 187 Fri May 16 11:48:30 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 188
 189         * gen-semantics.c (print_semantic_body): Add code to clear r0.
 190
 191         * igen.c (main): Add new option zero-r0, which adds code to clear
 192         GPR(0) each cycle.
 193
 194 Wed May  7 12:31:30 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 195
 196         * igen.c (print_itrace): Fix so line-nr is passed to trace
 197         function.
 198
 199         * gen-idecode.c (print_idecode_validate): Correct FP code.
 200
 201         * gen-support.c (gen_support_h): Always pass MY_INDEX to support
 202         functions.
 203         (print_support_function_name): Ditto.
 204
 205 Tue May  6 06:12:04 1997  Mike Meissner  <meissner@cygnus.com>
 206
 207         * igen.c (print_itrace): Call trace_one_insn to trace
 208         instructions, rather than doing it directly.
 209
 210 Mon May  5 14:11:46 1997  Mike Meissner  <meissner@cygnus.com>
 211
 212         * gen-engine.c (engine_switch_leaf): Remove extra %s.
 213         (print_engine_floating_point_unavailable): Wrap in #ifdef
 214         UNUSED/#endif, until somebody uses it.
 215
 216         * gen-idecode.c (error_leaf_contains_multiple_insn): Remove unused
 217         variable.
 218         (print_jump_until_stop_body): Wrap in #ifdef UNUSED/#endif, until
 219         somebody uses it.
 220         (print_idecode_validate): Use long formats to print long values.
 221
 222         * gen-semantics.c (print_idecode_invalid): Set name to "unknown"
 223         if we get an unexpected type.
 224
 225 Fri May  2 13:28:06 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 226
 227         * igen.c (print_itrace): Pass SD as well as CPU to calls to
 228         trace_printf.
 229
 230         * gen-support.c (gen_support_h): Always pass sim_cia cia to
 231         support functions.
 232         (print_support_function_name): Ditto.
 233
 234 Wed Apr 30 17:35:51 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 235
 236         * gen-support.c (support_c_function): Remove unnecessary memset of
 237         cia.
 238         * gen-semantics.c (print_semantic_body): Wasn't closing
 239         generated comment.
 240
 241 Tue Apr 29 11:11:12 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 242
 243         * ld-insn.c (load_insn_table): Report instructions that do not
 244         have at least a format and name.
 245         (insn_table_find_opcode_field): Check progress is being made.
 246
 247         * gen-support.c (support_c_function): Report empty function body.
 248
 249 Thu Apr 24 11:43:45 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 250
 251         * ld-insn.c (insn_table_expand_opcode): Allow reserved fields to
 252         be broken up.
 253         (insn_table_expand_insns): Allow special rules to apply to groups
 254         of instructions when all members of the group match the special
 255         mask/value.
 256
 257         * gen-semantics.c (print_c_semantic): Ditto.
 258         * igen.c (print_semantic_function_formal): Ditto.
 259         (print_semantic_function_type): Ditto.
 260         * igen.c (print_icache_function_formal): Ditto.
 261         * gen-idecode.c (print_idecode_issue_function_body): Ditto.
 262
 263         * gen-idecode.c (gen_idecode_h): Prepend the global_prefix to the
 264         instruction_address type.
 265
 266         * gen-semantics.c (print_semantic_body): Call cpu_error when an
 267         unimplemented instruction is encountered - gives the interpreter
 268         the chance to stop correctly.
 269
 270 Wed Apr 23 20:06:36 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 271
 272         * igen.c (print_function_name): Allow dot's in instruction names.
 273
 274 Tue Apr 22 21:46:28 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 275
 276         * igen.c (main), igen.h: Support new option - delayed-branch -
 277         generate code to drive a delayed branch processor.
 278
 279         * gen-idecode.c (gen_idecode_h): Define instruction_address type.
 280
 281         * igen.c (print_icache_function_formal): Replace address_word with
 282         instruction_address.
 283         (print_semantic_function_formal): Ditto.
 284         (print_semantic_function_type): Ditto.
 285         * gen-idecode.c (print_idecode_issue_function_body): Ditto.
 286
 287         * gen-semantics.c (print_semantic_body): Ditto.
 288         (print_c_semantic): Ditto.
 289
 290         * gen-support.c (support_c_function): Return a zeroed CIA instead
 291         of just zero - works with any cia type.
 292
 293         * igen.c (print_itrace): For delayed branch case, print just the
 294         current instruction.
 295
 296 Thu Apr 17 07:02:33 1997  Doug Evans  <dje@canuck.cygnus.com>
 297
 298         * igen.c (print_itrace): Use TRACE_FOO_P and trace_printf.
 299
 300 Tue Apr 15 15:20:31 1997  Ian Lance Taylor  <ian@cygnus.com>
 301
 302         * Makefile.in (INSTALL): Set to @INSTALL@.
 303         (INSTALL_XFORM, INSTALL_XFORM1): Remove.
 304
 305 Mon Apr 14 16:29:34 1997  Ian Lance Taylor  <ian@cygnus.com>
 306
 307         * Makefile.in (INSTALL): Change install.sh to install-sh.
 308
 309 Wed Apr  2 18:51:20 1997  Doug Evans  <dje@canuck.cygnus.com>
 310
 311         * gen-support.c (gen_support_c): sim-state.h renamed to sim-main.h.
 312         * gen-idecode.c (gen_idecode_c): Likewise.
 313         * igen.c (gen_semantics_c): Likewise.
 314
 315 Mon Mar 24 10:10:08 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>
 316
 317         * gen-icache.c (print_icache_body): No longer define cpu/sd,
 318         support.h now defines CPU/SD globally.
 319
 320         * gen-model.c (gen_model_h): Ditto.
 321
 322         * gen-idecode.c (print_idecode_issue_function_body): Ditto.
 323         (print_jump): Ditto.
 324         (print_jump_until_stop_body): Ditto.
 325         (print_idecode_validate): Ditto.
 326
 327         * gen-icache.c (print_icache_body): Ditto.
 328
 329         * gen-semantics.c (print_semantic_body): Ditto.
 330
 331         * igen.c (print_semantic_function_formal): Rename cpu to sim_cpu,
 332         processor to cpu.
 333         (print_icache_function_formal): Ditto.
 334
 335         * gen-support.c (print_support_function_name): Include sd/cpu arg
 336         in support function argument list.
 337         (support_c_function): Generate code to cpu/sd from sd/cpu.
 338         (gen_support_h): Define _SD the argument prefix for all support
 339         functions.  Define SD/CPU to determine sd/cpu from value of _SD
 340         macro.
 341
 342 Tue Mar 18 15:52:24 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>
 343
 344         * gen-support.c (gen_support_c): Update for renaming of engine to
 345         sim-state.
 346
 347         * igen.c: Ditto.
 348         * gen-idecode.c (gen_idecode_c): Ditto.
 349
 350 Mon Mar 17 15:17:07 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>
 351
 352         * ld-decode.c (load_decode_table): Rename slash to reserved.
 353         (dump_decode_rule): Ditto.
 354
 355         * ld-insn.c (parse_insn_format): Differentiate between a `/' -
 356         reserved bit - and a `*' - wild card.
 357         (parse_insn_format): Change is_slash to more informative reserved.
 358         (dump_insn_field): Ditto.
 359         (insn_field_is_constant): Ditto.
 360         (insn_table_expand_opcode): Ditto.
 361
 362         * gen-idecode.c (print_idecode_validate): Make check_mask and
 363         check_val the correct integer size.
 364         (print_idecode_validate): Fix reserved bit check for 64 bit
 365         targets.
 366
 367 Fri Mar 14 11:24:06 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>
 368
 369         * ld-insn.c (parse_insn_format): Accept '*' as an alternative of
 370         `/' in bit fields.  `/' denotes a wild bit.
 371
 372 Fri Mar  7 18:20:38 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>
 373
 374         * igen.h, igen.c (main): New options. Control generation of
 375         conditional issue and slot verification code.
 376
 377 Fri Mar  7 18:17:25 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>
 378
 379         * gen-support.c (print_support_function_name): Prepend the global
 380         name prefix when applicable.  Provide #define to map the user
 381         specified name the generated globaly unique one.
 382
 383 Fri Mar  7 18:07:45 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>
 384
 385         * gen-idecode.c (print_idecode_validate): Wrap each of the checks
 386         - reserved bits, floating point and slot validation - with a
 387         #ifdef so that they are optional.
 388
 389 Fri Mar  7 16:35:13 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>
 390
 391         * gen-idecode.c (error_leaf_contains_multiple_insn): New function
 392         - report the error of a leaf node in the decision tree containing
 393         several instructions.
 394         (print_idecode_table_leaf): Detect a leaf with multiple instructions.
 395         (print_idecode_switch_leaf): Ditto.
 396
 397         * gen-semantics.h, gen-semantics.c (print_idecode_illegal,
 398         print_idecode_invalid): Rename former to latter.  Add argument so
 399         that one function can generate all invalid instruction cases -
 400         illegal, fp-unavailable, wrong-slot.
 401         * gen-engine.c: Update.
 402
 403         * gen-idecode.c: Use print_idecode_invalid to generate a function
 404         call for cases when fp-unavailable and the slot is wrong.
 405
 406         * gen-idecode.c (print_idecode_validate): New check, generate code
 407         to verify that the instruction slot is correct.
 408
 409         * igen.c (main): Simplify options.
 410
 411 Wed Mar  5 09:55:55 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>
 412
 413         * igen.c (print_itrace): Remove source line reference for trace
 414         code - let the user see the generated file.
 415         (print_itrace): Print the trace code rather than reference a
 416         macro.
 417
 418 Tue Mar  4 17:31:55 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>
 419
 420         * igen.c (print_semantic_function_actual): Pass either the
 421         processor - smp - or the engine - mono - into semantic functions.
 422         Don't pass in both.
 423
 424         * gen-icache.c (print_icache_body): Dependant on smp, derive
 425         processor from engine or engine from processor, and hence ensuring
 426         that both are defined in all semantic functions.
 427
 428 Mon Mar  3 17:11:21 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>
 429
 430         * ld-insn.c (parse_insn_format): Make the width field optional.
 431         If missing assume that the number of characters in the value
 432         determines the number of bits in the field.
 433
 434 Thu Feb 27 11:27:48 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>
 435
 436         * ld-insn.c (insn_table_expand_opcode): Replace assertion with
 437         more useful error message.
 438
 439 Tue Feb 25 16:43:27 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>
 440
 441         * misc.c (error): Output errors on stderr.
 442
 443         * ld-insn.c (parse_insn_format): Skip any leading spaces.
 444         Verify the width of instructions being parsed.
 445
 446         * table.c (table_entry_read): Parse CPP's convention for
 447         specifying original file name/line-nr.
 448
 449 Wed Feb 19 12:30:28 1997  Andrew Cagney  <cagney@critters.cygnus.com>
 450
 451         * ld-insn.c (parse_insn_format): Allow trailing spaces in
 452         instruction fields.
 453
 454         * Makefile.in: Create using ../ppc/Makefile.in as a starting
 455         point.
 456         * configure.in: Ditto vis ../ppc/configure.in
 457
 458 Mon Feb 17 10:44:18 1997  Andrew Cagney  <cagney@critters.cygnus.com>
 459
 460         * gen-support.c (gen_support_c): Always include engine.h instead
 461         of cpu.h
 462         * gen-idecode.c (gen_idecode_c): Ditto.
 463
 464         * words.h (instruction_word): Remove instruction_word - now
 465         generated by igen.
 466         (address_word): New.  Used by igen.
 467
 468         * lf.c (lf_print_function_type_function): New, pass a function to
 469         print out the type instead of a constant string.
 470
 471         * igen.h, igen.c (print_semantic_function_formal,
 472         SEMANTIC_FUNCTION_FORMAL): Relace macro with function.
 473         (print_semantic_function_actual, SEMANTIC_FUNCTION_ACTUAL): Ditto.
 474         (print_semantic_function_type, SEMANTIC_FUNCTION_TYPE): Ditto.
 475         (print_icache_function_type, ICACHE_FUNCTION_TYPE): Ditto.
 476         (print_icache_function_formal, ICACHE_FUNCTION_FORMAL): Ditto.
 477         (print_icache_function_actual, ICACHE_FUNCTION_ACTUAL): Ditto.
 478         * gen-idecode.c (print_idecode_table): Update.
 479         (idecode_switch_leaf): Update.
 480         (print_idecode_switch_function_header): Ditto.
 481         (print_idecode_floating_point_unavailable): Ditto.
 482         (print_idecode_issue_function_header): Ditto.
 483         * igen.c (gen_icache_h): Ditto.
 484         * gen-engine.c (print_engine_table): Ditto.
 485         (engine_switch_leaf): Ditto.
 486         * gen-support.c (print_support_function_name): Ditto.
 487         * gen-semantics.c (print_semantic_function_header): Update.
 488         Update.
 489         * gen-icache.c (print_icache_function_header): Update.
 490         (print_icache_function): Update.
 491         (print_icache_internal_function_declaration): Update.
 492         (print_icache_internal_function_definition): Update.
 493
 494         * gen-idecode.c (gen_idecode_h): Drop including of idecode_*.h
 495         files, will at some stage need to move it into support.
 496
 497         * igen.h, igen.c (main): New option -e <engine> - generate a full
 498         simulation engine.  Previously this was the -d <idecode-file>
 499         option.
 500         * gen-engine.h, gen-engine.c: Copies of gen-idecode.*.  Will need
 501         to clean these up so that that call upon the updated gen-idecode
 502         code.
 503
 504         * gen-idecode.h, gen-idecode.c: Prune out any code not relevant to
 505         generating a decode table.
 506
 507         * Makefile.in (igen): Add dependencies for new gen-engine.* files.
 508
 509         * igen.h, igen.c (main): New option -M - Control what is returned
 510         by semantic functions - -1/NIA vs CIA+N/NIA.  Add
 511         generate_semantic_returning_modified_nia_only to igen_code enum.
 512         * gen-semantics.c (print_semantic_body): As an alternative, make
 513         NIA == -1 instead of CIA+insn_size by default.
 514
 515         * igen.h, igen.c (main, global_name_prefix, global_uname_prefix):
 516         New option -P <prefix> - Prepend all generated functions with the
 517         specified prefix.
 518         (gen_idecode_c): Adjust.
 519         * gen-icache.c (print_icache_struct): Ditto.
 520         * gen-support.c (gen_support_c): Ditto.
 521
 522 Sun Feb 16 15:23:15 1997  Andrew Cagney  <cagney@critters.cygnus.com>
 523
 524         * igen.c (main): Correct usage. Missleading message about ucase
 525         options dumping internal tables.  -F now includes rather then
 526         excludes instructions.
 527
 528         * misc.h, misc.c (a2i): Make 64bit.
 529
 530         * ld-insn.h (max_insn_bit_size, default_insn_bit_size): Increase
 531         max to 64bits, expect trouble.  Make the default 32 bits.
 532         * gen-idecode.c (print_idecode_table): Change EXTRACTED*
 533         et.al. macro's to use the insn_bit_size instead of assuming 32
 534         bits.
 535         * gen-icache.c (print_icache_extraction): Ditto.
 536         * gen-idecode.c (idecode_switch_start): Ditto.
 537         * gen-idecode.c (gen_idecode_c): Ditto
 538
 539         * igen.h (insn_specifying_widths), igen.c (main): New option -W.
 540         Indicates that the instruction field of the table is specifying
 541         bit widths instead of bit offsets.
 542         * ld-insn.c (parse_insn_format): Parse instruction fields
 543         specifying widths.
 544
 545         * misc.c (a2i): Allow binary numbers to be specified using the
 546         syntax 0bNNNN.
 547         * ld-insn.c: Allow such numbers to appear in the instruction
 548         format.
 549
 550         * table.c (table_entry_read): Make // a valid comment character.
 551         (table_entry_read): Skip lines containing a leading " - these may
 552         eventually be used in a disasembler.
 553
 554 Fri Feb 14 15:23:15 1997  Andrew Cagney  <cagney@critters.cygnus.com>
 555
 556         * filter.c, filter.h, gen-engine.c, gen-engine.h, gen-icache.c,
 557         gen-icache.h, gen-idecode.c, gen-idecode.h, gen-itable.c,
 558         gen-itable.h, gen-model.c, gen-model.h, gen-semantics.c,
 559         gen-semantics.h, gen-support.c, gen-support.h, igen.c, igen.h,
 560         ld-cache.c, ld-cache.h, ld-decode.c, ld-decode.h, ld-insn.c,
 561         ld-insn.h, lf.c, lf.h, misc.c, misc.h, table.c, table.h: Copy in
 562         from the ../ppc directory.
 563
 564         * filter_host.c, filter_host.h: Copy in from the ../ppc directory
 565         renaming from filter_filename.[hc]