gas/NEWS

   1 -*- text -*-
   2
   3 * Add support for the C-SKY processor series.
   4
   5 * Add support for the MIPS Loongson MultiMedia extensions Instructions (MMI)
   6   ASE.
   7
   8 Changes in 2.31:
   9
  10 * The ADR and ADRL pseudo-instructions supported by the ARM assembler
  11   now only set the bottom bit of the address of thumb function symbols
  12   if the -mthumb-interwork command line option is active.
  13
  14 * Add support for the MIPS Global INValidate (GINV) ASE.
  15
  16 * Add support for the MIPS Cyclic Redudancy Check (CRC) ASE.
  17
  18 * Add support for the Freescale S12Z architecture.
  19
  20 * Add --generate-missing-build-notes=[yes|no] option to create (or not) GNU
  21   Build Attribute notes if none are present in the input sources.  Add a
  22   --enable-generate-build-notes=[yes|no] configure time option to set the
  23   default behaviour.  Set the default if the configure option is not used
  24   to "no".
  25
  26 * Remove -mold-gcc command-line option for x86 targets.
  27
  28 * Add -O[2|s] command-line options to x86 assembler to enable alternate
  29   shorter instruction encoding.
  30
  31 * Add support for .nops directive.  It is currently supported only for
  32   x86 targets.
  33
  34 Changes in 2.30:
  35
  36 * Add support for loaction views in DWARF debug line information.
  37
  38 Changes in 2.29:
  39
  40 * Add support for ELF SHF_GNU_MBIND.
  41
  42 * Add support for the WebAssembly file format and wasm32 ELF conversion.
  43
  44 * PowerPC gas now checks that the correct register class is used in
  45   instructions.  For instance, "addi %f4,%cr3,%r31" warns three times
  46   that the registers are invalid.
  47
  48 * Add support for the Texas Instruments PRU processor.
  49
  50 * Support for the ARMv8-R architecture and Cortex-R52 processor has been
  51   added to the ARM port.
  52
  53 Changes in 2.28:
  54
  55 * Add support for the RISC-V architecture.
  56
  57 * Add support for the ARM Cortex-M23 and Cortex-M33 processors.
  58
  59 Changes in 2.27:
  60
  61 * Default to --enable-compressed-debug-sections=gas for Linux/x86 targets.
  62
  63 * Add --no-pad-sections to stop the assembler from padding the end of output
  64   sections up to their alignment boundary.
  65
  66 * Support for the ARMv8-M architecture has been added to the ARM port.  Support
  67   for the ARMv8-M Security and DSP Extensions has also been added to the ARM
  68   port.
  69
  70 * ARC backend accepts .extInstruction, .extCondCode, .extAuxRegister, and
  71   .extCoreRegister pseudo-ops that allow an user to define custom
  72   instructions, conditional codes, auxiliary and core registers.
  73
  74 * Add a configure option --enable-elf-stt-common to decide whether ELF
  75   assembler should generate common symbols with the STT_COMMON type by
  76   default.  Default to no.
  77
  78 * New command-line option --elf-stt-common= for ELF targets to control
  79   whether to generate common symbols with the STT_COMMON type.
  80
  81 * Add ability to set section flags and types via numeric values for ELF
  82   based targets.
  83
  84 * Add a configure option --enable-x86-relax-relocations to decide whether
  85   x86 assembler should generate relax relocations by default.  Default to
  86   yes, except for x86 Solaris targets older than Solaris 12.
  87
  88 * New command-line option -mrelax-relocations= for x86 target to control
  89   whether to generate relax relocations.
  90
  91 * New command-line option -mfence-as-lock-add=yes for x86 target to encode
  92   lfence, mfence and sfence as "lock addl $0x0, (%[re]sp)".
  93
  94 * Add assembly-time relaxation option for ARC cpus.
  95
  96 * Add --with-cpu=TYPE configure option for ARC gas.  This allows the default
  97   cpu type to be adjusted at configure time.
  98
  99 Changes in 2.26:
 100
 101 * Add a configure option --enable-compressed-debug-sections={all,gas} to
 102   decide whether DWARF debug sections should be compressed by default.
 103
 104 * Add support for the ARC EM/HS, and ARC600/700 architectures.  Remove
 105   assembler support for Argonaut RISC architectures.
 106
 107 * Symbol and label names can now be enclosed in double quotes (") which allows
 108   them to contain characters that are not part of valid symbol names in high
 109   level languages.
 110
 111 * Added the correctly spelled -march=armv6kz, for ARMv6KZ support.  The
 112   previous spelling, -march=armv6zk, is still accepted.
 113
 114 * Support for the ARMv8.1 architecture has been added to the Aarch64 port.
 115   Support for the individual ARMv8.1 Adv.SIMD, LOR and PAN architecture
 116   extensions has also been added to the Aarch64 port.
 117
 118 * Support for the ARMv8.1 architecture has been added to the ARM port.  Support
 119   for the individual ARMv8.1 Adv.SIMD and PAN architecture extensions has also
 120   been added to the ARM port.
 121
 122 * Extend --compress-debug-sections option to support
 123   --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi] for ELF
 124   targets.
 125
 126 * --compress-debug-sections is turned on for Linux/x86 by default.
 127
 128 Changes in 2.25:
 129
 130 * Add support for the AVR Tiny microcontrollers.
 131
 132 * Replace support for openrisc and or32 with support for or1k.
 133
 134 * Enhanced the ARM port to accept the assembler output from the CodeComposer
 135   Studio tool.  Support is enabled via the new command-line option -mccs.
 136
 137 * Add support for the Andes NDS32.
 138
 139 Changes in 2.24:
 140
 141 * Add support for the Texas Instruments MSP430X processor.
 142
 143 * Add -gdwarf-sections command-line option to enable per-code-section
 144   generation of DWARF .debug_line sections.
 145
 146 * Add support for Altera Nios II.
 147
 148 * Add support for the Imagination Technologies Meta processor.
 149
 150 * Add support for the v850e3v5.
 151
 152 * Remove assembler support for MIPS ECOFF targets.
 153
 154 Changes in 2.23:
 155
 156 * Add support for the 64-bit ARM architecture: AArch64.
 157
 158 * Add support for S12X processor.
 159
 160 * Add support for the VLE extension to the PowerPC architecture.
 161
 162 * Add support for the Freescale XGATE architecture.
 163
 164 * Add support for .bundle_align_mode, .bundle_lock, and .bundle_unlock
 165   directives.  These are currently available only for x86 and ARM targets.
 166
 167 * Add support for the Renesas RL78 architecture.
 168
 169 * Add support for the Adapteva EPIPHANY architecture.
 170
 171 * For x86, allow 'rep bsf', 'rep bsr', and 'rep ret' syntax.
 172
 173 Changes in 2.22:
 174
 175 * Add support for the Tilera TILEPro and TILE-Gx architectures.
 176
 177 Changes in 2.21:
 178
 179 * Gas no longer requires doubling of ampersands in macros.
 180
 181 * Add support for the TMS320C6000 (TI C6X) processor family.
 182
 183 * GAS now understands an extended syntax in the .section directive flags
 184   for COFF targets that allows the section's alignment to be specified.  This
 185   feature has also been backported to the 2.20 release series, starting with
 186   2.20.1.
 187
 188 * Add support for the Renesas RX processor.
 189
 190 * New command-line option, --compress-debug-sections, which requests
 191   compression of DWARF debug information sections in the relocatable output
 192   file.  Compressed debug sections are supported by readelf, objdump, and
 193   gold, but not currently by Gnu ld.
 194
 195 Changes in 2.20:
 196
 197 * Added support for v850e2 and v850e2v3.
 198
 199 * GNU/Linux targets now supports "gnu_unique_object" as a value in the .type
 200   pseudo op.  It marks the symbol as being globally unique in the entire
 201   process.
 202
 203 * ARM assembler now supports .inst[.nw] pseudo-ops to insert opcodes specified
 204   in binary rather than text.
 205
 206 * Add support for common symbol alignment to PE formats.
 207
 208 * Add support for the new discriminator column in the DWARF line table,
 209   with a discriminator operand for the .loc directive.
 210
 211 * Add support for Sunplus score architecture.
 212
 213 * The .type pseudo-op now accepts a type of STT_GNU_IFUNC which can be used to
 214   indicate that if the symbol is the target of a relocation, its value should
 215   not be use.  Instead the function should be invoked and its result used as
 216   the value.
 217
 218 * Add support for Lattice Mico32 (lm32) architecture.
 219
 220 * Add support for Xilinx MicroBlaze architecture.
 221
 222 Changes in 2.19:
 223
 224 * New pseudo op .cfi_val_encoded_addr, to record constant addresses in unwind
 225   tables without runtime relocation.
 226
 227 * New command-line option, -h-tick-hex, for sh, m32c, and h8/300 targets, which
 228   adds compatibility with H'00 style hex constants.
 229
 230 * New command-line option, -msse-check=[none|error|warning], for x86
 231   targets.
 232
 233 * New sub-option added to the assembler's -a command-line switch to
 234   generate a listing output.  The 'g' sub-option will insert into the listing
 235   various information about the assembly, such as assembler version, the
 236   command-line options used, and a time stamp.
 237
 238 * New command-line option -msse2avx for x86 target to encode SSE
 239   instructions with VEX prefix.
 240
 241 * Add Intel XSAVE, EPT, MOVBE, AES, PCLMUL, AVX/FMA support for x86 target.
 242
 243 * New command-line options, -march=CPU[,+EXTENSION...], -mtune=CPU,
 244   -mmnemonic=[att|intel], -msyntax=[att|intel], -mindex-reg,
 245   -mnaked-reg and -mold-gcc, for x86 targets.
 246
 247 * Support for generating wide character strings has been added via the new
 248   pseudo ops: .string16, .string32 and .string64.
 249
 250 * Support for SSE5 has been added to the i386 port.
 251
 252 Changes in 2.18:
 253
 254 * The GAS sources are now released under the GPLv3.
 255
 256 * Support for the National Semiconductor CR16 target has been added.
 257
 258 * Added gas .reloc pseudo.  This is a low-level interface for creating
 259   relocations.
 260
 261 * Add support for x86_64 PE+ target.
 262
 263 * Add support for Score target.
 264
 265 Changes in 2.17:
 266
 267 * Support for the Infineon XC16X has been added by KPIT Cummins Infosystems.
 268
 269 * Support for ms2 architecture has been added.
 270
 271 * Support for the Z80 processor family has been added.
 272
 273 * Add support for the "@<file>" syntax to the command line, so that extra
 274   switches can be read from <file>.
 275
 276 * The SH target supports a new command-line switch --enable-reg-prefix which,
 277   if enabled, will allow register names to be optionally prefixed with a $
 278   character.  This allows register names to be distinguished from label names.
 279
 280 * Macros with a variable number of arguments are now supported. See the
 281   documentation for how this works.
 282
 283 * Added --reduce-memory-overheads switch to reduce the size of the hash
 284   tables used, at the expense of longer assembly times, and
 285   --hash-size=<NUMBER> to set the size of the hash tables used by gas.
 286
 287 * Macro names and macro parameter names can now be any identifier that would
 288   also be legal as a symbol elsewhere. For macro parameter names, this is
 289   known to cause problems in certain sources when the respective target uses
 290   characters inconsistently, and thus macro parameter references may no longer
 291   be recognized as such (see the documentation for details).
 292
 293 * Support the .f_floating, .d_floating, .g_floating and .h_floating directives
 294   for the VAX target in order to be more compatible with the VAX MACRO
 295   assembler.
 296
 297 * New command-line option -mtune=[itanium1|itanium2] for IA64 targets.
 298
 299 Changes in 2.16:
 300
 301 * Redefinition of macros now results in an error.
 302
 303 * New command-line option -mhint.b=[ok|warning|error] for IA64 targets.
 304
 305 * New command-line option -munwind-check=[warning|error] for IA64
 306   targets.
 307
 308 * The IA64 port now uses automatic dependency violation removal as its default
 309   mode.
 310
 311 * Port to MAXQ processor contributed by HCL Tech.
 312
 313 * Added support for generating unwind tables for ARM ELF targets.
 314
 315 * Add a -g command-line option to generate debug information in the target's
 316   preferred debug format.
 317
 318 * Support for the crx-elf target added.
 319
 320 * Support for the sh-symbianelf target added.
 321
 322 * Added a pseudo-op (.secrel32) to generate 32 bit section relative relocations
 323   on pe[i]-i386; required for this target's DWARF 2 support.
 324
 325 * Support for Motorola MCF521x/5249/547x/548x added.
 326
 327 * Support for ColdFire EMAC instructions added and Motorola syntax for MAC/EMAC
 328   instrucitons.
 329
 330 * New command-line option -mno-shared for MIPS ELF targets.
 331
 332 * New command-line option --alternate and pseudo-ops .altmacro and .noaltmacro
 333   added to enter (and leave) alternate macro syntax mode.
 334
 335 Changes in 2.15:
 336
 337 * The MIPS -membedded-pic option (Embedded-PIC code generation) is
 338   deprecated and will be removed in a future release.
 339
 340 * Added PIC m32r Linux (ELF) and support to M32R assembler.
 341
 342 * Added support for ARM V6.
 343
 344 * Added support for sh4a and variants.
 345
 346 * Support for Renesas M32R2 added.
 347
 348 * Limited support for Mapping Symbols as specified in the ARM ELF
 349   specification has been added to the arm assembler.
 350
 351 * On ARM architectures, added a new gas directive ".unreq" that undoes
 352   definitions created by ".req".
 353
 354 * Support for Motorola ColdFire MCF528x added.
 355
 356 * Added --gstabs+ switch to enable the generation of STABS debug format
 357   information with GNU extensions.
 358
 359 * Added support for MIPS64 Release 2.
 360
 361 * Added support for v850e1.
 362
 363 * Added -n switch for x86 assembler.  By default, x86 GAS replaces
 364   multiple nop instructions used for alignment within code sections
 365   with multi-byte nop instructions such as leal 0(%esi,1),%esi.  This
 366   switch disables the optimization.
 367
 368 * Removed -n option from MIPS assembler.  It was not useful, and confused the
 369   existing -non_shared option.
 370
 371 Changes in 2.14:
 372
 373 * Added support for MIPS32 Release 2.
 374
 375 * Added support for Xtensa architecture.
 376
 377 * Support for Intel's iWMMXt processor (an ARM variant) added.
 378
 379 * An assembler test generator has been contributed and an example file that
 380   uses it (gas/testsuite/gas/all/test-gen.c and test-exmaple.c).
 381
 382 * Support for SH2E added.
 383
 384 * GASP has now been removed.
 385
 386 * Support for Texas Instruments TMS320C4x and TMS320C3x series of
 387   DSP's contributed by Michael Hayes and Svein E. Seldal.
 388
 389 * Support for the Ubicom IP2xxx microcontroller added.
 390
 391 Changes in 2.13:
 392
 393 * Support for the Fujitsu FRV architecture added by Red Hat. Models for FR400
 394   and FR500 included.
 395
 396 * Support for DLX processor added.
 397
 398 * GASP has now been deprecated and will be removed in a future release.  Use
 399   the macro facilities in GAS instead.
 400
 401 * GASP now correctly parses floating point numbers. Unless the base is
 402   explicitly specified, they are interpreted as decimal numbers regardless of
 403   the currently specified base.
 404
 405 Changes in 2.12:
 406
 407 * Support for Don Knuth's MMIX, by Hans-Peter Nilsson.
 408
 409 * Support for the OpenRISC 32-bit embedded processor by OpenCores.
 410
 411 * The ARM assembler now accepts -march=..., -mcpu=... and -mfpu=... for
 412   specifying the target instruction set.  The old method of specifying the
 413   target processor has been deprecated, but is still accepted for
 414   compatibility.
 415
 416 * Support for the VFP floating-point instruction set has been added to
 417   the ARM assembler.
 418
 419 * New psuedo op: .incbin to include a set of binary data at a given point
 420   in the assembly.  Contributed by Anders Norlander.
 421
 422 * The MIPS assembler now accepts -march/-mtune. -mcpu has been deprecated
 423   but still works for compatability.
 424
 425 * The MIPS assembler no longer issues a warning by default when it
 426   generates a nop instruction from a macro. The new command-line option
 427   -n will turn on the warning.
 428
 429 Changes in 2.11:
 430
 431 * Support for PDP-11 and 2.11BSD a.out format, by Lars Brinkhoff.
 432
 433 * x86 gas now supports the full Pentium4 instruction set.
 434
 435 * Support for AMD x86-64 architecture, by Jan Hubicka, SuSE Labs.
 436
 437 * Support for Motorola 68HC11 and 68HC12.
 438
 439 * Support for Texas Instruments TMS320C54x (tic54x).
 440
 441 * Support for IA-64.
 442
 443 * Support for i860, by Jason Eckhardt.
 444
 445 * Support for CRIS (Axis Communications ETRAX series).
 446
 447 * x86 gas has a new .arch pseudo op to specify the target CPU architecture.
 448
 449 * x86 gas -q command-line option quietens warnings about register size changes
 450   due to suffix, indirect jmp/call without `*', stand-alone prefixes, and
 451   translating various deprecated floating point instructions.
 452
 453 Changes in 2.10:
 454
 455 * Support for the ARM msr instruction was changed to only allow an immediate
 456   operand when altering the flags field.
 457
 458 * Support for ATMEL AVR.
 459
 460 * Support for IBM 370 ELF.  Somewhat experimental.
 461
 462 * Support for numbers with suffixes.
 463
 464 * Added support for breaking to the end of repeat loops.
 465
 466 * Added support for parallel instruction syntax (DOUBLEBAR_PARALLEL).
 467
 468 * New .elseif pseudo-op added.
 469
 470 * New --fatal-warnings option.
 471
 472 * picoJava architecture support added.
 473
 474 * Motorola MCore 210 processor support added.
 475
 476 * A new pseudo-op .intel_syntax has been implemented to allow gas to parse i386
 477   assembly programs with intel syntax.
 478
 479 * New pseudo-ops .func,.endfunc to aid in debugging user-written assembler code.
 480
 481 * Added -gdwarf2 option to generate DWARF 2 debugging information.
 482
 483 * Full 16-bit mode support for i386.
 484
 485 * Greatly improved instruction operand checking for i386.  This change will
 486   produce errors or warnings on incorrect assembly code that previous versions
 487   of gas accepted.  If you get unexpected messages from code that worked with
 488   older versions of gas, please double check the code before reporting a bug.
 489
 490 * Weak symbol support added for COFF targets.
 491
 492 * Mitsubishi D30V support added.
 493
 494 * Texas Instruments c80 (tms320c80) support added.
 495
 496 * i960 ELF support added.
 497
 498 * ARM ELF support added.
 499
 500 Changes in 2.9:
 501
 502 * Texas Instruments c30 (tms320c30) support added.
 503
 504 * The assembler now optimizes the exception frame information generated by egcs
 505   and gcc 2.8.  The new --traditional-format option disables this optimization.
 506
 507 * Added --gstabs option to generate stabs debugging information.
 508
 509 * The -a option takes a new suboption, m (e.g., -alm) to expand macros in a
 510   listing.
 511
 512 * Added -MD option to print dependencies.
 513
 514 Changes in 2.8:
 515
 516 * BeOS support added.
 517
 518 * MIPS16 support added.
 519
 520 * Motorola ColdFire 5200 support added (configure for m68k and use -m5200).
 521
 522 * Alpha/VMS support added.
 523
 524 * m68k options --base-size-default-16, --base-size-default-32,
 525   --disp-size-default-16, and --disp-size-default-32 added.
 526
 527 * The alignment directives now take an optional third argument, which is the
 528   maximum number of bytes to skip.  If doing the alignment would require
 529   skipping more than the given number of bytes, the alignment is not done at
 530   all.
 531
 532 * The ELF assembler has a new pseudo-op, .symver, used for symbol versioning.
 533
 534 * The -a option takes a new suboption, c (e.g., -alc), to skip false
 535   conditionals in listings.
 536
 537 * Added new pseudo-op, .equiv; it's like .equ, except that it is an error if
 538   the symbol is already defined.
 539
 540 Changes in 2.7:
 541
 542 * The PowerPC assembler now allows the use of symbolic register names (r0,
 543   etc.) if -mregnames is used.  Symbolic names preceded by a '%' (%r0, etc.)
 544   can be used any time.  PowerPC 860 move to/from SPR instructions have been
 545   added.
 546
 547 * Alpha Linux (ELF) support added.
 548
 549 * PowerPC ELF support added.
 550
 551 * m68k Linux (ELF) support added.
 552
 553 * i960 Hx/Jx support added.
 554
 555 * i386/PowerPC gnu-win32 support added.
 556
 557 * SCO ELF support added.  For OpenServer 5 targets (i386-unknown-sco3.2v5) the
 558   default is to build COFF-only support.  To get a set of tools that generate
 559   ELF (they'll understand both COFF and ELF), you must configure with
 560   target=i386-unknown-sco3.2v5elf.
 561
 562 * m88k-motorola-sysv3* support added.
 563
 564 Changes in 2.6:
 565
 566 * Gas now directly supports macros, without requiring GASP.
 567
 568 * Gas now has an MRI assembler compatibility mode.  Use -M or --mri to select
 569   MRI mode.  The pseudo-op ``.mri 1'' will switch into the MRI mode until the
 570   ``.mri 0'' is seen; this can be convenient for inline assembler code.
 571
 572 * Added --defsym SYM=VALUE option.
 573
 574 * Added -mips4 support to MIPS assembler.
 575
 576 * Added PIC support to Solaris and SPARC SunOS 4 assembler.
 577
 578 Changes in 2.4:
 579
 580 * Converted this directory to use an autoconf-generated configure script.
 581
 582 * ARM support, from Richard Earnshaw.
 583
 584 * Updated VMS support, from Pat Rankin, including considerably improved
 585   debugging support.
 586
 587 * Support for the control registers in the 68060.
 588
 589 * Handles (ignores) a new directive ".this_GCC_requires_the_GNU_assembler", to
 590   provide for possible future gcc changes, for targets where gas provides some
 591   features not available in the native assembler.  If the native assembler is
 592   used, it should become obvious pretty quickly what the problem is.
 593
 594 * Usage message is available with "--help".
 595
 596 * The GNU Assembler Preprocessor (gasp) is included.  (Actually, it was in 2.3
 597   also, but didn't get into the NEWS file.)
 598
 599 * Weak symbol support for a.out.
 600
 601 * A bug in the listing code which could cause an infinite loop has been fixed.
 602   Bugs in listings when generating a COFF object file have also been fixed.
 603
 604 * Initial i386-svr4 PIC implementation from Eric Youngdale, based on code by
 605   Paul Kranenburg.
 606
 607 * Improved Alpha support.  Immediate constants can have a much larger range
 608   now. Support for the 21164 has been contributed by Digital.
 609
 610 * Updated ns32k (pc532-mach, netbsd532) support from Ian Dall.
 611
 612 Changes in 2.3:
 613
 614 * Mach i386 support, by David Mackenzie and Ken Raeburn.
 615
 616 * RS/6000 and PowerPC support by Ian Taylor.
 617
 618 * VMS command scripts (make-gas.com, config-gas.com) have been worked on a bit,
 619   based on mail received from various people.  The `-h#' option should work
 620   again too.
 621
 622 * HP-PA work, by Jeff Law.  Note, for the PA, gas-2.3 has been designed to work
 623   with gdb-4.12 and gcc-2.6.  As gcc-2.6 has not been released yet, a special
 624   version of gcc-2.5.8 has been patched to work with gas-2.3.  You can retrieve
 625   this special version of gcc-2.5.8 via anonymous ftp from jaguar.cs.utah.edu
 626   in the "dist" directory.
 627
 628 * Vax support in gas fixed for BSD, so it builds and seems to run a couple
 629   simple tests okay.  I haven't put it through extensive testing.  (GNU make is
 630   currently required for BSD 4.3 builds.)
 631
 632 * Support for the DEC Alpha, running OSF/1 (ECOFF format).  The gas support is
 633   based on code donated by CMU, which used an a.out-based format.  I'm afraid
 634   the alpha-a.out support is pretty badly mangled, and much of it removed;
 635   making it work will require rewriting it as BFD support for the format anyways.
 636
 637 * Irix 5 support.
 638
 639 * The test suites have been fixed up a bit, so that they should work with a
 640   couple different versions of expect and dejagnu.
 641
 642 * Symbols' values are now handled internally as expressions, permitting more
 643   flexibility in evaluating them in some cases.  Some details of relocation
 644   handling have also changed, and simple constant pool management has been
 645   added, to make the Alpha port easier.
 646
 647 * New option "--statistics" for printing out program run times.  This is
 648   intended to be used with the gcc "-Q" option, which prints out times spent in
 649   various phases of compilation.  (You should be able to get all of them
 650   printed out with "gcc -Q -Wa,--statistics", I think.)
 651
 652 Changes in 2.2:
 653
 654 * RS/6000 AIX and MIPS SGI Irix 5 support has been added.
 655
 656 * Configurations that are still in development (and therefore are convenient to
 657   have listed in configure.in) still get rejected without a minor change to
 658   gas/Makefile.in, so people not doing development work shouldn't get the
 659   impression that support for such configurations is actually believed to be
 660   reliable.
 661
 662 * The program name (usually "as") is printed when a fatal error message is
 663   displayed.  This should prevent some confusion about the source of occasional
 664   messages about "internal errors".
 665
 666 * ELF support is falling into place.  Support for the 386 should be working.
 667   Support for SPARC Solaris is in.  HPPA support from Utah is being integrated.
 668
 669 * Symbol values are maintained as expressions instead of being immediately
 670   boiled down to add-symbol, sub-symbol, and constant.  This permits slightly
 671   more complex calculations involving symbols whose values are not alreadey
 672   known.
 673
 674 * DBX-style debugging info ("stabs") is now supported for COFF formats.
 675   If any stabs directives are seen in the source, GAS will create two new
 676   sections: a ".stab" and a ".stabstr" section.  The format of the .stab
 677   section is nearly identical to the a.out symbol format, and .stabstr is
 678   its string table.  For this to be useful, you must have configured GCC
 679   to generate stabs (by defining DBX_DEBUGGING_INFO), and must have a GDB
 680   that can use the stab sections (4.11 or later).
 681
 682 * LynxOS, on i386 and m68k platforms, is now supported.  SPARC LynxOS
 683   support is in progress.
 684
 685 Changes in 2.1:
 686
 687 * Several small fixes for i386-aix (PS/2) support from Minh Tran-Le have been
 688   incorporated, but not well tested yet.
 689
 690 * Altered the opcode table split for m68k; it should require less VM to compile
 691   with gcc now.
 692
 693 * Some minor adjustments to add (Convergent Technologies') Miniframe support,
 694   suggested by Ronald Cole.
 695
 696 * HPPA support (running OSF only, not HPUX) has been contributed by Utah.  This
 697   includes improved ELF support, which I've started adapting for SPARC Solaris
 698   2.x.  Integration isn't completely, so it probably won't work.
 699
 700 * HP9000/300 support, donated by HP, has been merged in.
 701
 702 * Ian Taylor has finished the MIPS ECOFF (Ultrix, Irix) support.
 703
 704 * Better error messages for unsupported configurations (e.g., hppa-hpux).
 705
 706 * Test suite framework is starting to become reasonable.
 707
 708 Changes in 2.0:
 709
 710 * Mostly bug fixes.
 711
 712 * Some more merging of BFD and ELF code, but ELF still doesn't work.
 713
 714 Changes in 1.94:
 715
 716 * BFD merge is partly done.  Adventurous souls may try giving configure the
 717   "--with-bfd-assembler" option.  Currently, ELF format requires it, a.out
 718   format accepts it; SPARC CPU accepts it.  It's the default only for OS "elf"
 719   or "solaris".  (ELF isn't really supported yet.  It needs work.  I've got
 720   some code from Utah for HP-PA ELF, and from DG for m88k ELF, but they're not
 721   fully merged yet.)
 722
 723 * The 68K opcode table has been split in half.  It should now compile under gcc
 724   without consuming ridiculous amounts of memory.
 725
 726 * A couple data structures have been reduced in size.  This should result in
 727   saving a little bit of space at runtime.
 728
 729 * Support for MIPS, from OSF and Ralph Campbell, has been merged in.  The OSF
 730   code provided ROSE format support, which I haven't merged in yet.  (I can
 731   make it available, if anyone wants to try it out.)  Ralph's code, for BSD
 732   4.4, supports a.out format.  We don't have ECOFF support in just yet; it's
 733   coming.
 734
 735 * Support for the Hitachi H8/500 has been added.
 736
 737 * VMS host and target support should be working now, thanks chiefly to Eric
 738   Youngdale.
 739
 740 Changes in 1.93.01:
 741
 742 * For m68k, support for more processors has been added: 68040, CPU32, 68851.
 743
 744 * For i386, .align is now power-of-two; was number-of-bytes.
 745
 746 * For m68k, "%" is now accepted before register names.  For COFF format, which
 747   doesn't use underscore prefixes for C labels, it is required, so variable "a0"
 748   can be distinguished from the register.
 749
 750 * Last public release was 1.38.  Lots of configuration changes since then, lots
 751   of new CPUs and formats, lots of bugs fixed.
 752
 753 \f
 754 Copyright (C) 2012-2018 Free Software Foundation, Inc.
 755
 756 Copying and distribution of this file, with or without modification,
 757 are permitted in any medium without royalty provided the copyright
 758 notice and this notice are preserved.
 759
 760 Local variables:
 761 fill-column: 79
 762 End: