gas/NEWS

   1 -*- text -*-
   2
   3 Changes in 2.30:
   4
   5 * Add support for loaction views in DWARF debug line information.
   6
   7 Changes in 2.29:
   8
   9 * Add support for ELF SHF_GNU_MBIND.
  10
  11 * Add support for the WebAssembly file format and wasm32 ELF conversion.
  12
  13 * PowerPC gas now checks that the correct register class is used in
  14   instructions.  For instance, "addi %f4,%cr3,%r31" warns three times
  15   that the registers are invalid.
  16
  17 * Add support for the Texas Instruments PRU processor.
  18
  19 * Support for the ARMv8-R architecture and Cortex-R52 processor has been
  20   added to the ARM port.
  21
  22 Changes in 2.28:
  23
  24 * Add support for the RISC-V architecture.
  25
  26 * Add support for the ARM Cortex-M23 and Cortex-M33 processors.
  27
  28 Changes in 2.27:
  29
  30 * Default to --enable-compressed-debug-sections=gas for Linux/x86 targets.
  31
  32 * Add --no-pad-sections to stop the assembler from padding the end of output
  33   sections up to their alignment boundary.
  34
  35 * Support for the ARMv8-M architecture has been added to the ARM port.  Support
  36   for the ARMv8-M Security and DSP Extensions has also been added to the ARM
  37   port.
  38
  39 * ARC backend accepts .extInstruction, .extCondCode, .extAuxRegister, and
  40   .extCoreRegister pseudo-ops that allow an user to define custom
  41   instructions, conditional codes, auxiliary and core registers.
  42
  43 * Add a configure option --enable-elf-stt-common to decide whether ELF
  44   assembler should generate common symbols with the STT_COMMON type by
  45   default.  Default to no.
  46
  47 * New command line option --elf-stt-common= for ELF targets to control
  48   whether to generate common symbols with the STT_COMMON type.
  49
  50 * Add ability to set section flags and types via numeric values for ELF
  51   based targets.
  52
  53 * Add a configure option --enable-x86-relax-relocations to decide whether
  54   x86 assembler should generate relax relocations by default.  Default to
  55   yes, except for x86 Solaris targets older than Solaris 12.
  56
  57 * New command line option -mrelax-relocations= for x86 target to control
  58   whether to generate relax relocations.
  59
  60 * New command line option -mfence-as-lock-add=yes for x86 target to encode
  61   lfence, mfence and sfence as "lock addl $0x0, (%[re]sp)".
  62
  63 * Add assembly-time relaxation option for ARC cpus.
  64
  65 * Add --with-cpu=TYPE configure option for ARC gas.  This allows the default
  66   cpu type to be adjusted at configure time.
  67
  68 Changes in 2.26:
  69
  70 * Add a configure option --enable-compressed-debug-sections={all,gas} to
  71   decide whether DWARF debug sections should be compressed by default.
  72
  73 * Add support for the ARC EM/HS, and ARC600/700 architectures.  Remove
  74   assembler support for Argonaut RISC architectures.
  75
  76 * Symbol and label names can now be enclosed in double quotes (") which allows
  77   them to contain characters that are not part of valid symbol names in high
  78   level languages.
  79
  80 * Added the correctly spelled -march=armv6kz, for ARMv6KZ support.  The
  81   previous spelling, -march=armv6zk, is still accepted.
  82
  83 * Support for the ARMv8.1 architecture has been added to the Aarch64 port.
  84   Support for the individual ARMv8.1 Adv.SIMD, LOR and PAN architecture
  85   extensions has also been added to the Aarch64 port.
  86
  87 * Support for the ARMv8.1 architecture has been added to the ARM port.  Support
  88   for the individual ARMv8.1 Adv.SIMD and PAN architecture extensions has also
  89   been added to the ARM port.
  90
  91 * Extend --compress-debug-sections option to support
  92   --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi] for ELF
  93   targets.
  94
  95 * --compress-debug-sections is turned on for Linux/x86 by default.
  96
  97 Changes in 2.25:
  98
  99 * Add support for the AVR Tiny microcontrollers.
 100
 101 * Replace support for openrisc and or32 with support for or1k.
 102
 103 * Enhanced the ARM port to accept the assembler output from the CodeComposer
 104   Studio tool.  Support is enabled via the new command line option -mccs.
 105
 106 * Add support for the Andes NDS32.
 107
 108 Changes in 2.24:
 109
 110 * Add support for the Texas Instruments MSP430X processor.
 111
 112 * Add -gdwarf-sections command line option to enable per-code-section
 113   generation of DWARF .debug_line sections.
 114
 115 * Add support for Altera Nios II.
 116
 117 * Add support for the Imagination Technologies Meta processor.
 118
 119 * Add support for the v850e3v5.
 120
 121 * Remove assembler support for MIPS ECOFF targets.
 122
 123 Changes in 2.23:
 124
 125 * Add support for the 64-bit ARM architecture: AArch64.
 126
 127 * Add support for S12X processor.
 128
 129 * Add support for the VLE extension to the PowerPC architecture.
 130
 131 * Add support for the Freescale XGATE architecture.
 132
 133 * Add support for .bundle_align_mode, .bundle_lock, and .bundle_unlock
 134   directives.  These are currently available only for x86 and ARM targets.
 135
 136 * Add support for the Renesas RL78 architecture.
 137
 138 * Add support for the Adapteva EPIPHANY architecture.
 139
 140 * For x86, allow 'rep bsf', 'rep bsr', and 'rep ret' syntax.
 141
 142 Changes in 2.22:
 143
 144 * Add support for the Tilera TILEPro and TILE-Gx architectures.
 145
 146 Changes in 2.21:
 147
 148 * Gas no longer requires doubling of ampersands in macros.
 149
 150 * Add support for the TMS320C6000 (TI C6X) processor family.
 151
 152 * GAS now understands an extended syntax in the .section directive flags
 153   for COFF targets that allows the section's alignment to be specified.  This
 154   feature has also been backported to the 2.20 release series, starting with
 155   2.20.1.
 156
 157 * Add support for the Renesas RX processor.
 158
 159 * New command line option, --compress-debug-sections, which requests
 160   compression of DWARF debug information sections in the relocatable output
 161   file.  Compressed debug sections are supported by readelf, objdump, and
 162   gold, but not currently by Gnu ld.
 163
 164 Changes in 2.20:
 165
 166 * Added support for v850e2 and v850e2v3.
 167
 168 * GNU/Linux targets now supports "gnu_unique_object" as a value in the .type
 169   pseudo op.  It marks the symbol as being globally unique in the entire
 170   process.
 171
 172 * ARM assembler now supports .inst[.nw] pseudo-ops to insert opcodes specified
 173   in binary rather than text.
 174
 175 * Add support for common symbol alignment to PE formats.
 176
 177 * Add support for the new discriminator column in the DWARF line table,
 178   with a discriminator operand for the .loc directive.
 179
 180 * Add support for Sunplus score architecture.
 181
 182 * The .type pseudo-op now accepts a type of STT_GNU_IFUNC which can be used to
 183   indicate that if the symbol is the target of a relocation, its value should
 184   not be use.  Instead the function should be invoked and its result used as
 185   the value.
 186
 187 * Add support for Lattice Mico32 (lm32) architecture.
 188
 189 * Add support for Xilinx MicroBlaze architecture.
 190
 191 Changes in 2.19:
 192
 193 * New pseudo op .cfi_val_encoded_addr, to record constant addresses in unwind
 194   tables without runtime relocation.
 195
 196 * New command line option, -h-tick-hex, for sh, m32c, and h8/300 targets, which
 197   adds compatibility with H'00 style hex constants.
 198
 199 * New command line option, -msse-check=[none|error|warning], for x86
 200   targets.
 201
 202 * New sub-option added to the assembler's -a command line switch to
 203   generate a listing output.  The 'g' sub-option will insert into the listing
 204   various information about the assembly, such as assembler version, the
 205   command line options used, and a time stamp.
 206
 207 * New command line option -msse2avx for x86 target to encode SSE
 208   instructions with VEX prefix.
 209
 210 * Add Intel XSAVE, EPT, MOVBE, AES, PCLMUL, AVX/FMA support for x86 target.
 211
 212 * New command line options, -march=CPU[,+EXTENSION...], -mtune=CPU,
 213   -mmnemonic=[att|intel], -msyntax=[att|intel], -mindex-reg,
 214   -mnaked-reg and -mold-gcc, for x86 targets.
 215
 216 * Support for generating wide character strings has been added via the new
 217   pseudo ops: .string16, .string32 and .string64.
 218
 219 * Support for SSE5 has been added to the i386 port.
 220
 221 Changes in 2.18:
 222
 223 * The GAS sources are now released under the GPLv3.
 224
 225 * Support for the National Semiconductor CR16 target has been added.
 226
 227 * Added gas .reloc pseudo.  This is a low-level interface for creating
 228   relocations.
 229
 230 * Add support for x86_64 PE+ target.
 231
 232 * Add support for Score target.
 233
 234 Changes in 2.17:
 235
 236 * Support for the Infineon XC16X has been added by KPIT Cummins Infosystems.
 237
 238 * Support for ms2 architecture has been added.
 239
 240 * Support for the Z80 processor family has been added.
 241
 242 * Add support for the "@<file>" syntax to the command line, so that extra
 243   switches can be read from <file>.
 244
 245 * The SH target supports a new command line switch --enable-reg-prefix which,
 246   if enabled, will allow register names to be optionally prefixed with a $
 247   character.  This allows register names to be distinguished from label names.
 248
 249 * Macros with a variable number of arguments are now supported. See the
 250   documentation for how this works.
 251
 252 * Added --reduce-memory-overheads switch to reduce the size of the hash
 253   tables used, at the expense of longer assembly times, and
 254   --hash-size=<NUMBER> to set the size of the hash tables used by gas.
 255
 256 * Macro names and macro parameter names can now be any identifier that would
 257   also be legal as a symbol elsewhere. For macro parameter names, this is
 258   known to cause problems in certain sources when the respective target uses
 259   characters inconsistently, and thus macro parameter references may no longer
 260   be recognized as such (see the documentation for details).
 261
 262 * Support the .f_floating, .d_floating, .g_floating and .h_floating directives
 263   for the VAX target in order to be more compatible with the VAX MACRO
 264   assembler.
 265
 266 * New command line option -mtune=[itanium1|itanium2] for IA64 targets.
 267
 268 Changes in 2.16:
 269
 270 * Redefinition of macros now results in an error.
 271
 272 * New command line option -mhint.b=[ok|warning|error] for IA64 targets.
 273
 274 * New command line option -munwind-check=[warning|error] for IA64
 275   targets.
 276
 277 * The IA64 port now uses automatic dependency violation removal as its default
 278   mode.
 279
 280 * Port to MAXQ processor contributed by HCL Tech.
 281
 282 * Added support for generating unwind tables for ARM ELF targets.
 283
 284 * Add a -g command line option to generate debug information in the target's
 285   preferred debug format.
 286
 287 * Support for the crx-elf target added.
 288
 289 * Support for the sh-symbianelf target added.
 290
 291 * Added a pseudo-op (.secrel32) to generate 32 bit section relative relocations
 292   on pe[i]-i386; required for this target's DWARF 2 support.
 293
 294 * Support for Motorola MCF521x/5249/547x/548x added.
 295
 296 * Support for ColdFire EMAC instructions added and Motorola syntax for MAC/EMAC
 297   instrucitons.
 298
 299 * New command line option -mno-shared for MIPS ELF targets.
 300
 301 * New command line option --alternate and pseudo-ops .altmacro and .noaltmacro
 302   added to enter (and leave) alternate macro syntax mode.
 303
 304 Changes in 2.15:
 305
 306 * The MIPS -membedded-pic option (Embedded-PIC code generation) is
 307   deprecated and will be removed in a future release.
 308
 309 * Added PIC m32r Linux (ELF) and support to M32R assembler.
 310
 311 * Added support for ARM V6.
 312
 313 * Added support for sh4a and variants.
 314
 315 * Support for Renesas M32R2 added.
 316
 317 * Limited support for Mapping Symbols as specified in the ARM ELF
 318   specification has been added to the arm assembler.
 319
 320 * On ARM architectures, added a new gas directive ".unreq" that undoes
 321   definitions created by ".req".
 322
 323 * Support for Motorola ColdFire MCF528x added.
 324
 325 * Added --gstabs+ switch to enable the generation of STABS debug format
 326   information with GNU extensions.
 327
 328 * Added support for MIPS64 Release 2.
 329
 330 * Added support for v850e1.
 331
 332 * Added -n switch for x86 assembler.  By default, x86 GAS replaces
 333   multiple nop instructions used for alignment within code sections
 334   with multi-byte nop instructions such as leal 0(%esi,1),%esi.  This
 335   switch disables the optimization.
 336
 337 * Removed -n option from MIPS assembler.  It was not useful, and confused the
 338   existing -non_shared option.
 339
 340 Changes in 2.14:
 341
 342 * Added support for MIPS32 Release 2.
 343
 344 * Added support for Xtensa architecture.
 345
 346 * Support for Intel's iWMMXt processor (an ARM variant) added.
 347
 348 * An assembler test generator has been contributed and an example file that
 349   uses it (gas/testsuite/gas/all/test-gen.c and test-exmaple.c).
 350
 351 * Support for SH2E added.
 352
 353 * GASP has now been removed.
 354
 355 * Support for Texas Instruments TMS320C4x and TMS320C3x series of
 356   DSP's contributed by Michael Hayes and Svein E. Seldal.
 357
 358 * Support for the Ubicom IP2xxx microcontroller added.
 359
 360 Changes in 2.13:
 361
 362 * Support for the Fujitsu FRV architecture added by Red Hat. Models for FR400
 363   and FR500 included.
 364
 365 * Support for DLX processor added.
 366
 367 * GASP has now been deprecated and will be removed in a future release.  Use
 368   the macro facilities in GAS instead.
 369
 370 * GASP now correctly parses floating point numbers. Unless the base is
 371   explicitly specified, they are interpreted as decimal numbers regardless of
 372   the currently specified base.
 373
 374 Changes in 2.12:
 375
 376 * Support for Don Knuth's MMIX, by Hans-Peter Nilsson.
 377
 378 * Support for the OpenRISC 32-bit embedded processor by OpenCores.
 379
 380 * The ARM assembler now accepts -march=..., -mcpu=... and -mfpu=... for
 381   specifying the target instruction set.  The old method of specifying the
 382   target processor has been deprecated, but is still accepted for
 383   compatibility.
 384
 385 * Support for the VFP floating-point instruction set has been added to
 386   the ARM assembler.
 387
 388 * New psuedo op: .incbin to include a set of binary data at a given point
 389   in the assembly.  Contributed by Anders Norlander.
 390
 391 * The MIPS assembler now accepts -march/-mtune. -mcpu has been deprecated
 392   but still works for compatability.
 393
 394 * The MIPS assembler no longer issues a warning by default when it
 395   generates a nop instruction from a macro. The new command line option
 396   -n will turn on the warning.
 397
 398 Changes in 2.11:
 399
 400 * Support for PDP-11 and 2.11BSD a.out format, by Lars Brinkhoff.
 401
 402 * x86 gas now supports the full Pentium4 instruction set.
 403
 404 * Support for AMD x86-64 architecture, by Jan Hubicka, SuSE Labs.
 405
 406 * Support for Motorola 68HC11 and 68HC12.
 407
 408 * Support for Texas Instruments TMS320C54x (tic54x).
 409
 410 * Support for IA-64.
 411
 412 * Support for i860, by Jason Eckhardt.
 413
 414 * Support for CRIS (Axis Communications ETRAX series).
 415
 416 * x86 gas has a new .arch pseudo op to specify the target CPU architecture.
 417
 418 * x86 gas -q command line option quietens warnings about register size changes
 419   due to suffix, indirect jmp/call without `*', stand-alone prefixes, and
 420   translating various deprecated floating point instructions.
 421
 422 Changes in 2.10:
 423
 424 * Support for the ARM msr instruction was changed to only allow an immediate
 425   operand when altering the flags field.
 426
 427 * Support for ATMEL AVR.
 428
 429 * Support for IBM 370 ELF.  Somewhat experimental.
 430
 431 * Support for numbers with suffixes.
 432
 433 * Added support for breaking to the end of repeat loops.
 434
 435 * Added support for parallel instruction syntax (DOUBLEBAR_PARALLEL).
 436
 437 * New .elseif pseudo-op added.
 438
 439 * New --fatal-warnings option.
 440
 441 * picoJava architecture support added.
 442
 443 * Motorola MCore 210 processor support added.
 444
 445 * A new pseudo-op .intel_syntax has been implemented to allow gas to parse i386
 446   assembly programs with intel syntax.
 447
 448 * New pseudo-ops .func,.endfunc to aid in debugging user-written assembler code.
 449
 450 * Added -gdwarf2 option to generate DWARF 2 debugging information.
 451
 452 * Full 16-bit mode support for i386.
 453
 454 * Greatly improved instruction operand checking for i386.  This change will
 455   produce errors or warnings on incorrect assembly code that previous versions
 456   of gas accepted.  If you get unexpected messages from code that worked with
 457   older versions of gas, please double check the code before reporting a bug.
 458
 459 * Weak symbol support added for COFF targets.
 460
 461 * Mitsubishi D30V support added.
 462
 463 * Texas Instruments c80 (tms320c80) support added.
 464
 465 * i960 ELF support added.
 466
 467 * ARM ELF support added.
 468
 469 Changes in 2.9:
 470
 471 * Texas Instruments c30 (tms320c30) support added.
 472
 473 * The assembler now optimizes the exception frame information generated by egcs
 474   and gcc 2.8.  The new --traditional-format option disables this optimization.
 475
 476 * Added --gstabs option to generate stabs debugging information.
 477
 478 * The -a option takes a new suboption, m (e.g., -alm) to expand macros in a
 479   listing.
 480
 481 * Added -MD option to print dependencies.
 482
 483 Changes in 2.8:
 484
 485 * BeOS support added.
 486
 487 * MIPS16 support added.
 488
 489 * Motorola ColdFire 5200 support added (configure for m68k and use -m5200).
 490
 491 * Alpha/VMS support added.
 492
 493 * m68k options --base-size-default-16, --base-size-default-32,
 494   --disp-size-default-16, and --disp-size-default-32 added.
 495
 496 * The alignment directives now take an optional third argument, which is the
 497   maximum number of bytes to skip.  If doing the alignment would require
 498   skipping more than the given number of bytes, the alignment is not done at
 499   all.
 500
 501 * The ELF assembler has a new pseudo-op, .symver, used for symbol versioning.
 502
 503 * The -a option takes a new suboption, c (e.g., -alc), to skip false
 504   conditionals in listings.
 505
 506 * Added new pseudo-op, .equiv; it's like .equ, except that it is an error if
 507   the symbol is already defined.
 508
 509 Changes in 2.7:
 510
 511 * The PowerPC assembler now allows the use of symbolic register names (r0,
 512   etc.) if -mregnames is used.  Symbolic names preceded by a '%' (%r0, etc.)
 513   can be used any time.  PowerPC 860 move to/from SPR instructions have been
 514   added.
 515
 516 * Alpha Linux (ELF) support added.
 517
 518 * PowerPC ELF support added.
 519
 520 * m68k Linux (ELF) support added.
 521
 522 * i960 Hx/Jx support added.
 523
 524 * i386/PowerPC gnu-win32 support added.
 525
 526 * SCO ELF support added.  For OpenServer 5 targets (i386-unknown-sco3.2v5) the
 527   default is to build COFF-only support.  To get a set of tools that generate
 528   ELF (they'll understand both COFF and ELF), you must configure with
 529   target=i386-unknown-sco3.2v5elf.
 530
 531 * m88k-motorola-sysv3* support added.
 532
 533 Changes in 2.6:
 534
 535 * Gas now directly supports macros, without requiring GASP.
 536
 537 * Gas now has an MRI assembler compatibility mode.  Use -M or --mri to select
 538   MRI mode.  The pseudo-op ``.mri 1'' will switch into the MRI mode until the
 539   ``.mri 0'' is seen; this can be convenient for inline assembler code.
 540
 541 * Added --defsym SYM=VALUE option.
 542
 543 * Added -mips4 support to MIPS assembler.
 544
 545 * Added PIC support to Solaris and SPARC SunOS 4 assembler.
 546
 547 Changes in 2.4:
 548
 549 * Converted this directory to use an autoconf-generated configure script.
 550
 551 * ARM support, from Richard Earnshaw.
 552
 553 * Updated VMS support, from Pat Rankin, including considerably improved
 554   debugging support.
 555
 556 * Support for the control registers in the 68060.
 557
 558 * Handles (ignores) a new directive ".this_GCC_requires_the_GNU_assembler", to
 559   provide for possible future gcc changes, for targets where gas provides some
 560   features not available in the native assembler.  If the native assembler is
 561   used, it should become obvious pretty quickly what the problem is.
 562
 563 * Usage message is available with "--help".
 564
 565 * The GNU Assembler Preprocessor (gasp) is included.  (Actually, it was in 2.3
 566   also, but didn't get into the NEWS file.)
 567
 568 * Weak symbol support for a.out.
 569
 570 * A bug in the listing code which could cause an infinite loop has been fixed.
 571   Bugs in listings when generating a COFF object file have also been fixed.
 572
 573 * Initial i386-svr4 PIC implementation from Eric Youngdale, based on code by
 574   Paul Kranenburg.
 575
 576 * Improved Alpha support.  Immediate constants can have a much larger range
 577   now. Support for the 21164 has been contributed by Digital.
 578
 579 * Updated ns32k (pc532-mach, netbsd532) support from Ian Dall.
 580
 581 Changes in 2.3:
 582
 583 * Mach i386 support, by David Mackenzie and Ken Raeburn.
 584
 585 * RS/6000 and PowerPC support by Ian Taylor.
 586
 587 * VMS command scripts (make-gas.com, config-gas.com) have been worked on a bit,
 588   based on mail received from various people.  The `-h#' option should work
 589   again too.
 590
 591 * HP-PA work, by Jeff Law.  Note, for the PA, gas-2.3 has been designed to work
 592   with gdb-4.12 and gcc-2.6.  As gcc-2.6 has not been released yet, a special
 593   version of gcc-2.5.8 has been patched to work with gas-2.3.  You can retrieve
 594   this special version of gcc-2.5.8 via anonymous ftp from jaguar.cs.utah.edu
 595   in the "dist" directory.
 596
 597 * Vax support in gas fixed for BSD, so it builds and seems to run a couple
 598   simple tests okay.  I haven't put it through extensive testing.  (GNU make is
 599   currently required for BSD 4.3 builds.)
 600
 601 * Support for the DEC Alpha, running OSF/1 (ECOFF format).  The gas support is
 602   based on code donated by CMU, which used an a.out-based format.  I'm afraid
 603   the alpha-a.out support is pretty badly mangled, and much of it removed;
 604   making it work will require rewriting it as BFD support for the format anyways.
 605
 606 * Irix 5 support.
 607
 608 * The test suites have been fixed up a bit, so that they should work with a
 609   couple different versions of expect and dejagnu.
 610
 611 * Symbols' values are now handled internally as expressions, permitting more
 612   flexibility in evaluating them in some cases.  Some details of relocation
 613   handling have also changed, and simple constant pool management has been
 614   added, to make the Alpha port easier.
 615
 616 * New option "--statistics" for printing out program run times.  This is
 617   intended to be used with the gcc "-Q" option, which prints out times spent in
 618   various phases of compilation.  (You should be able to get all of them
 619   printed out with "gcc -Q -Wa,--statistics", I think.)
 620
 621 Changes in 2.2:
 622
 623 * RS/6000 AIX and MIPS SGI Irix 5 support has been added.
 624
 625 * Configurations that are still in development (and therefore are convenient to
 626   have listed in configure.in) still get rejected without a minor change to
 627   gas/Makefile.in, so people not doing development work shouldn't get the
 628   impression that support for such configurations is actually believed to be
 629   reliable.
 630
 631 * The program name (usually "as") is printed when a fatal error message is
 632   displayed.  This should prevent some confusion about the source of occasional
 633   messages about "internal errors".
 634
 635 * ELF support is falling into place.  Support for the 386 should be working.
 636   Support for SPARC Solaris is in.  HPPA support from Utah is being integrated.
 637
 638 * Symbol values are maintained as expressions instead of being immediately
 639   boiled down to add-symbol, sub-symbol, and constant.  This permits slightly
 640   more complex calculations involving symbols whose values are not alreadey
 641   known.
 642
 643 * DBX-style debugging info ("stabs") is now supported for COFF formats.
 644   If any stabs directives are seen in the source, GAS will create two new
 645   sections: a ".stab" and a ".stabstr" section.  The format of the .stab
 646   section is nearly identical to the a.out symbol format, and .stabstr is
 647   its string table.  For this to be useful, you must have configured GCC
 648   to generate stabs (by defining DBX_DEBUGGING_INFO), and must have a GDB
 649   that can use the stab sections (4.11 or later).
 650
 651 * LynxOS, on i386 and m68k platforms, is now supported.  SPARC LynxOS
 652   support is in progress.
 653
 654 Changes in 2.1:
 655
 656 * Several small fixes for i386-aix (PS/2) support from Minh Tran-Le have been
 657   incorporated, but not well tested yet.
 658
 659 * Altered the opcode table split for m68k; it should require less VM to compile
 660   with gcc now.
 661
 662 * Some minor adjustments to add (Convergent Technologies') Miniframe support,
 663   suggested by Ronald Cole.
 664
 665 * HPPA support (running OSF only, not HPUX) has been contributed by Utah.  This
 666   includes improved ELF support, which I've started adapting for SPARC Solaris
 667   2.x.  Integration isn't completely, so it probably won't work.
 668
 669 * HP9000/300 support, donated by HP, has been merged in.
 670
 671 * Ian Taylor has finished the MIPS ECOFF (Ultrix, Irix) support.
 672
 673 * Better error messages for unsupported configurations (e.g., hppa-hpux).
 674
 675 * Test suite framework is starting to become reasonable.
 676
 677 Changes in 2.0:
 678
 679 * Mostly bug fixes.
 680
 681 * Some more merging of BFD and ELF code, but ELF still doesn't work.
 682
 683 Changes in 1.94:
 684
 685 * BFD merge is partly done.  Adventurous souls may try giving configure the
 686   "--with-bfd-assembler" option.  Currently, ELF format requires it, a.out
 687   format accepts it; SPARC CPU accepts it.  It's the default only for OS "elf"
 688   or "solaris".  (ELF isn't really supported yet.  It needs work.  I've got
 689   some code from Utah for HP-PA ELF, and from DG for m88k ELF, but they're not
 690   fully merged yet.)
 691
 692 * The 68K opcode table has been split in half.  It should now compile under gcc
 693   without consuming ridiculous amounts of memory.
 694
 695 * A couple data structures have been reduced in size.  This should result in
 696   saving a little bit of space at runtime.
 697
 698 * Support for MIPS, from OSF and Ralph Campbell, has been merged in.  The OSF
 699   code provided ROSE format support, which I haven't merged in yet.  (I can
 700   make it available, if anyone wants to try it out.)  Ralph's code, for BSD
 701   4.4, supports a.out format.  We don't have ECOFF support in just yet; it's
 702   coming.
 703
 704 * Support for the Hitachi H8/500 has been added.
 705
 706 * VMS host and target support should be working now, thanks chiefly to Eric
 707   Youngdale.
 708
 709 Changes in 1.93.01:
 710
 711 * For m68k, support for more processors has been added: 68040, CPU32, 68851.
 712
 713 * For i386, .align is now power-of-two; was number-of-bytes.
 714
 715 * For m68k, "%" is now accepted before register names.  For COFF format, which
 716   doesn't use underscore prefixes for C labels, it is required, so variable "a0"
 717   can be distinguished from the register.
 718
 719 * Last public release was 1.38.  Lots of configuration changes since then, lots
 720   of new CPUs and formats, lots of bugs fixed.
 721
 722 \f
 723 Copyright (C) 2012-2018 Free Software Foundation, Inc.
 724
 725 Copying and distribution of this file, with or without modification,
 726 are permitted in any medium without royalty provided the copyright
 727 notice and this notice are preserved.
 728
 729 Local variables:
 730 fill-column: 79
 731 End: