gas/NEWS

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