5 Support for Texas Instruments TMS320C54x (tic54x).
9 x86 gas has a new .arch pseudo op to specify the target CPU architecture.
11 x86 gas -q command line option quietens warnings about register size changes
12 due to suffix, indirect jmp/call without `*', stand-alone prefixes, and
13 translating various deprecated floating point instructions.
17 Support for ATMEL AVR.
19 Support for IBM 370 ELF. Somewhat experimental.
21 Support for numbers with suffixes.
23 Added support for breaking to the end of repeat loops.
25 Added support for parallel instruction syntax (DOUBLEBAR_PARALLEL).
27 New .elseif pseudo-op added.
29 New --fatal-warnings option.
31 picoJava architecture support added.
33 Motorola MCore 210 processor support added.
35 A new pseudo-op .intel_syntax has been implemented to allow gas to parse i386
36 assembly programs with intel syntax.
38 New pseudo-ops .func,.endfunc to aid in debugging user-written assembler code.
40 Added -gdwarf2 option to generate DWARF 2 debugging information.
42 Full 16-bit mode support for i386.
44 Greatly improved instruction operand checking for i386. This change will
45 produce errors or warnings on incorrect assembly code that previous versions of
46 gas accepted. If you get unexpected messages from code that worked with older
47 versions of gas, please double check the code before reporting a bug.
49 Weak symbol support added for COFF targets.
51 Mitsubishi D30V support added.
53 Texas Instruments c80 (tms320c80) support added.
55 i960 ELF support added.
57 ARM ELF support added.
61 Texas Instruments c30 (tms320c30) support added.
63 The assembler now optimizes the exception frame information generated by egcs
64 and gcc 2.8. The new --traditional-format option disables this optimization.
66 Added --gstabs option to generate stabs debugging information.
68 The -a option takes a new suboption, m (e.g., -alm) to expand macros in a
71 Added -MD option to print dependencies.
79 Motorola ColdFire 5200 support added (configure for m68k and use -m5200).
81 Alpha/VMS support added.
83 m68k options --base-size-default-16, --base-size-default-32,
84 --disp-size-default-16, and --disp-size-default-32 added.
86 The alignment directives now take an optional third argument, which is the
87 maximum number of bytes to skip. If doing the alignment would require skipping
88 more than the given number of bytes, the alignment is not done at all.
90 The ELF assembler has a new pseudo-op, .symver, used for symbol versioning.
92 The -a option takes a new suboption, c (e.g., -alc), to skip false conditionals
95 Added new pseudo-op, .equiv; it's like .equ, except that it is an error if the
96 symbol is already defined.
100 The PowerPC assembler now allows the use of symbolic register names (r0, etc.)
101 if -mregnames is used. Symbolic names preceded by a '%' (%r0, etc.) can be
102 used any time. PowerPC 860 move to/from SPR instructions have been added.
104 Alpha Linux (ELF) support added.
106 PowerPC ELF support added.
108 m68k Linux (ELF) support added.
110 i960 Hx/Jx support added.
112 i386/PowerPC gnu-win32 support added.
114 SCO ELF support added. For OpenServer 5 targets (i386-unknown-sco3.2v5) the
115 default is to build COFF-only support. To get a set of tools that generate ELF
116 (they'll understand both COFF and ELF), you must configure with
117 target=i386-unknown-sco3.2v5elf.
119 m88k-motorola-sysv3* support added.
123 Gas now directly supports macros, without requiring GASP.
125 Gas now has an MRI assembler compatibility mode. Use -M or --mri to select MRI
126 mode. The pseudo-op ``.mri 1'' will switch into the MRI mode until the ``.mri
127 0'' is seen; this can be convenient for inline assembler code.
129 Added --defsym SYM=VALUE option.
131 Added -mips4 support to MIPS assembler.
133 Added PIC support to Solaris and SPARC SunOS 4 assembler.
137 Converted this directory to use an autoconf-generated configure script.
139 ARM support, from Richard Earnshaw.
141 Updated VMS support, from Pat Rankin, including considerably improved debugging
144 Support for the control registers in the 68060.
146 Handles (ignores) a new directive ".this_GCC_requires_the_GNU_assembler", to
147 provide for possible future gcc changes, for targets where gas provides some
148 features not available in the native assembler. If the native assembler is
149 used, it should become obvious pretty quickly what the problem is.
151 Usage message is available with "--help".
153 The GNU Assembler Preprocessor (gasp) is included. (Actually, it was in 2.3
154 also, but didn't get into the NEWS file.)
156 Weak symbol support for a.out.
158 A bug in the listing code which could cause an infinite loop has been fixed.
159 Bugs in listings when generating a COFF object file have also been fixed.
161 Initial i386-svr4 PIC implementation from Eric Youngdale, based on code by Paul
164 Improved Alpha support. Immediate constants can have a much larger range now.
165 Support for the 21164 has been contributed by Digital.
167 Updated ns32k (pc532-mach, netbsd532) support from Ian Dall.
171 Mach i386 support, by David Mackenzie and Ken Raeburn.
173 RS/6000 and PowerPC support by Ian Taylor.
175 VMS command scripts (make-gas.com, config-gas.com) have been worked on a bit,
176 based on mail received from various people. The `-h#' option should work again
179 HP-PA work, by Jeff Law. Note, for the PA, gas-2.3 has been designed to work
180 with gdb-4.12 and gcc-2.6. As gcc-2.6 has not been released yet, a special
181 version of gcc-2.5.8 has been patched to work with gas-2.3. You can retrieve
182 this special version of gcc-2.5.8 via anonymous ftp from jaguar.cs.utah.edu
183 in the "dist" directory.
185 Vax support in gas fixed for BSD, so it builds and seems to run a couple simple
186 tests okay. I haven't put it through extensive testing. (GNU make is
187 currently required for BSD 4.3 builds.)
189 Support for the DEC Alpha, running OSF/1 (ECOFF format). The gas support is
190 based on code donated by CMU, which used an a.out-based format. I'm afraid the
191 alpha-a.out support is pretty badly mangled, and much of it removed; making it
192 work will require rewriting it as BFD support for the format anyways.
196 The test suites have been fixed up a bit, so that they should work with a
197 couple different versions of expect and dejagnu.
199 Symbols' values are now handled internally as expressions, permitting more
200 flexibility in evaluating them in some cases. Some details of relocation
201 handling have also changed, and simple constant pool management has been added,
202 to make the Alpha port easier.
204 New option "--statistics" for printing out program run times. This is intended
205 to be used with the gcc "-Q" option, which prints out times spent in various
206 phases of compilation. (You should be able to get all of them printed out with
207 "gcc -Q -Wa,--statistics", I think.)
209 ----------------------------------------------------------------
213 RS/6000 AIX and MIPS SGI Irix 5 support has been added.
215 Configurations that are still in development (and therefore are convenient to
216 have listed in configure.in) still get rejected without a minor change to
217 gas/Makefile.in, so people not doing development work shouldn't get the
218 impression that support for such configurations is actually believed to be
221 The program name (usually "as") is printed when a fatal error message is
222 displayed. This should prevent some confusion about the source of occasional
223 messages about "internal errors".
225 ELF support is falling into place. Support for the 386 should be working.
226 Support for SPARC Solaris is in. HPPA support from Utah is being integrated.
228 Symbol values are maintained as expressions instead of being immediately boiled
229 down to add-symbol, sub-symbol, and constant. This permits slightly more
230 complex calculations involving symbols whose values are not alreadey known.
232 DBX-style debugging info ("stabs") is now supported for COFF formats.
233 If any stabs directives are seen in the source, GAS will create two new
234 sections: a ".stab" and a ".stabstr" section. The format of the .stab
235 section is nearly identical to the a.out symbol format, and .stabstr is
236 its string table. For this to be useful, you must have configured GCC
237 to generate stabs (by defining DBX_DEBUGGING_INFO), and must have a GDB
238 that can use the stab sections (4.11 or later).
240 LynxOS, on i386 and m68k platforms, is now supported. SPARC LynxOS
241 support is in progress.
243 ----------------------------------------------------------------
247 Several small fixes for i386-aix (PS/2) support from Minh Tran-Le have been
248 incorporated, but not well tested yet.
250 Altered the opcode table split for m68k; it should require less VM to compile
253 Some minor adjustments to add (Convergent Technologies') Miniframe support,
254 suggested by Ronald Cole.
256 HPPA support (running OSF only, not HPUX) has been contributed by Utah. This
257 includes improved ELF support, which I've started adapting for SPARC Solaris
258 2.x. Integration isn't completely, so it probably won't work.
260 HP9000/300 support, donated by HP, has been merged in.
262 Ian Taylor has finished the MIPS ECOFF (Ultrix, Irix) support.
264 Better error messages for unsupported configurations (e.g., hppa-hpux).
266 Test suite framework is starting to become reasonable.
268 ----------------------------------------------------------------
274 Some more merging of BFD and ELF code, but ELF still doesn't work.
276 ----------------------------------------------------------------
280 BFD merge is partly done. Adventurous souls may try giving configure the
281 "--with-bfd-assembler" option. Currently, ELF format requires it, a.out format
282 accepts it; SPARC CPU accepts it. It's the default only for OS "elf" or
283 "solaris". (ELF isn't really supported yet. It needs work. I've got some
284 code from Utah for HP-PA ELF, and from DG for m88k ELF, but they're not fully
287 The 68K opcode table has been split in half. It should now compile under gcc
288 without consuming ridiculous amounts of memory.
290 A couple data structures have been reduced in size. This should result in
291 saving a little bit of space at runtime.
293 Support for MIPS, from OSF and Ralph Campbell, has been merged in. The OSF
294 code provided ROSE format support, which I haven't merged in yet. (I can make
295 it available, if anyone wants to try it out.) Ralph's code, for BSD 4.4,
296 supports a.out format. We don't have ECOFF support in just yet; it's coming.
298 Support for the Hitachi H8/500 has been added.
300 VMS host and target support should be working now, thanks chiefly to Eric
303 ----------------------------------------------------------------
307 For m68k, support for more processors has been added: 68040, CPU32, 68851.
309 For i386, .align is now power-of-two; was number-of-bytes.
311 For m68k, "%" is now accepted before register names. For COFF format, which
312 doesn't use underscore prefixes for C labels, it is required, so variable "a0"
313 can be distinguished from the register.
315 Last public release was 1.38. Lots of configuration changes since then, lots
316 of new CPUs and formats, lots of bugs fixed.