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[/] [openrisc/] [trunk/] [gnu-old/] [binutils-2.18.50/] [gas/] [NEWS] - Blame information for rev 38

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