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[/] [openrisc/] [trunk/] [gnu-stable/] [binutils-2.20.1/] [gas/] [NEWS] - Blame information for rev 818

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