5 Support for numbers with suffixes.
7 New .elseif pseudo-op added.
9 New --fatal-warnings option.
11 picoJava architecture support added.
13 Motorola MCore 210 processor support added.
15 A new pseudo-op .intel_syntax has been implemented to allow gas to parse i386
16 assembly programs with intel syntax.
18 New pseudo-ops .func,.endfunc to aid in debugging user-written assembler code.
20 Added -gdwarf2 option to generate DWARF 2 debugging information.
22 Full 16-bit mode support for i386.
24 Greatly improved instruction operand checking for i386. This change will
25 produce errors or warnings on incorrect assembly code that previous versions of
26 gas accepted. If you get unexpected messages from code that worked with older
27 versions of gas, please double check the code before reporting a bug.
29 Weak symbol support added for COFF targets.
31 Mitsubishi D30V support added.
33 Texas Instruments c80 (tms320c80) support added.
35 i960 ELF support added.
39 Texas Instruments c30 (tms320c30) support added.
41 The assembler now optimizes the exception frame information generated by egcs
42 and gcc 2.8. The new --traditional-format option disables this optimization.
44 Added --gstabs option to generate stabs debugging information.
46 The -a option takes a new suboption, m (e.g., -alm) to expand macros in a
49 Added -MD option to print dependencies.
57 Motorola ColdFire 5200 support added (configure for m68k and use -m5200).
59 Alpha/VMS support added.
61 m68k options --base-size-default-16, --base-size-default-32,
62 --disp-size-default-16, and --disp-size-default-32 added.
64 The alignment directives now take an optional third argument, which is the
65 maximum number of bytes to skip. If doing the alignment would require skipping
66 more than the given number of bytes, the alignment is not done at all.
68 The ELF assembler has a new pseudo-op, .symver, used for symbol versioning.
70 The -a option takes a new suboption, c (e.g., -alc), to skip false conditionals
73 Added new pseudo-op, .equiv; it's like .equ, except that it is an error if the
74 symbol is already defined.
78 The PowerPC assembler now allows the use of symbolic register names (r0, etc.)
79 if -mregnames is used. Symbolic names preceded by a '%' (%r0, etc.) can be
80 used any time. PowerPC 860 move to/from SPR instructions have been added.
82 Alpha Linux (ELF) support added.
84 PowerPC ELF support added.
86 m68k Linux (ELF) support added.
88 i960 Hx/Jx support added.
90 i386/PowerPC gnu-win32 support added.
92 SCO ELF support added. For OpenServer 5 targets (i386-unknown-sco3.2v5) the
93 default is to build COFF-only support. To get a set of tools that generate ELF
94 (they'll understand both COFF and ELF), you must configure with
95 target=i386-unknown-sco3.2v5elf.
97 m88k-motorola-sysv3* support added.
101 Gas now directly supports macros, without requiring GASP.
103 Gas now has an MRI assembler compatibility mode. Use -M or --mri to select MRI
104 mode. The pseudo-op ``.mri 1'' will switch into the MRI mode until the ``.mri
105 0'' is seen; this can be convenient for inline assembler code.
107 Added --defsym SYM=VALUE option.
109 Added -mips4 support to MIPS assembler.
111 Added PIC support to Solaris and SPARC SunOS 4 assembler.
115 Converted this directory to use an autoconf-generated configure script.
117 ARM support, from Richard Earnshaw.
119 Updated VMS support, from Pat Rankin, including considerably improved debugging
122 Support for the control registers in the 68060.
124 Handles (ignores) a new directive ".this_GCC_requires_the_GNU_assembler", to
125 provide for possible future gcc changes, for targets where gas provides some
126 features not available in the native assembler. If the native assembler is
127 used, it should become obvious pretty quickly what the problem is.
129 Usage message is available with "--help".
131 The GNU Assembler Preprocessor (gasp) is included. (Actually, it was in 2.3
132 also, but didn't get into the NEWS file.)
134 Weak symbol support for a.out.
136 A bug in the listing code which could cause an infinite loop has been fixed.
137 Bugs in listings when generating a COFF object file have also been fixed.
139 Initial i386-svr4 PIC implementation from Eric Youngdale, based on code by Paul
142 Improved Alpha support. Immediate constants can have a much larger range now.
143 Support for the 21164 has been contributed by Digital.
145 Updated ns32k (pc532-mach, netbsd532) support from Ian Dall.
149 Mach i386 support, by David Mackenzie and Ken Raeburn.
151 RS/6000 and PowerPC support by Ian Taylor.
153 VMS command scripts (make-gas.com, config-gas.com) have been worked on a bit,
154 based on mail received from various people. The `-h#' option should work again
157 HP-PA work, by Jeff Law. Note, for the PA, gas-2.3 has been designed to work
158 with gdb-4.12 and gcc-2.6. As gcc-2.6 has not been released yet, a special
159 version of gcc-2.5.8 has been patched to work with gas-2.3. You can retrieve
160 this special version of gcc-2.5.8 via anonymous ftp from jaguar.cs.utah.edu
161 in the "dist" directory.
163 Vax support in gas fixed for BSD, so it builds and seems to run a couple simple
164 tests okay. I haven't put it through extensive testing. (GNU make is
165 currently required for BSD 4.3 builds.)
167 Support for the DEC Alpha, running OSF/1 (ECOFF format). The gas support is
168 based on code donated by CMU, which used an a.out-based format. I'm afraid the
169 alpha-a.out support is pretty badly mangled, and much of it removed; making it
170 work will require rewriting it as BFD support for the format anyways.
174 The test suites have been fixed up a bit, so that they should work with a
175 couple different versions of expect and dejagnu.
177 Symbols' values are now handled internally as expressions, permitting more
178 flexibility in evaluating them in some cases. Some details of relocation
179 handling have also changed, and simple constant pool management has been added,
180 to make the Alpha port easier.
182 New option "--statistics" for printing out program run times. This is intended
183 to be used with the gcc "-Q" option, which prints out times spent in various
184 phases of compilation. (You should be able to get all of them printed out with
185 "gcc -Q -Wa,--statistics", I think.)
187 ----------------------------------------------------------------
191 RS/6000 AIX and MIPS SGI Irix 5 support has been added.
193 Configurations that are still in development (and therefore are convenient to
194 have listed in configure.in) still get rejected without a minor change to
195 gas/Makefile.in, so people not doing development work shouldn't get the
196 impression that support for such configurations is actually believed to be
199 The program name (usually "as") is printed when a fatal error message is
200 displayed. This should prevent some confusion about the source of occasional
201 messages about "internal errors".
203 ELF support is falling into place. Support for the 386 should be working.
204 Support for SPARC Solaris is in. HPPA support from Utah is being integrated.
206 Symbol values are maintained as expressions instead of being immediately boiled
207 down to add-symbol, sub-symbol, and constant. This permits slightly more
208 complex calculations involving symbols whose values are not alreadey known.
210 DBX-style debugging info ("stabs") is now supported for COFF formats.
211 If any stabs directives are seen in the source, GAS will create two new
212 sections: a ".stab" and a ".stabstr" section. The format of the .stab
213 section is nearly identical to the a.out symbol format, and .stabstr is
214 its string table. For this to be useful, you must have configured GCC
215 to generate stabs (by defining DBX_DEBUGGING_INFO), and must have a GDB
216 that can use the stab sections (4.11 or later).
218 LynxOS, on i386 and m68k platforms, is now supported. SPARC LynxOS
219 support is in progress.
221 ----------------------------------------------------------------
225 Several small fixes for i386-aix (PS/2) support from Minh Tran-Le have been
226 incorporated, but not well tested yet.
228 Altered the opcode table split for m68k; it should require less VM to compile
231 Some minor adjustments to add (Convergent Technologies') Miniframe support,
232 suggested by Ronald Cole.
234 HPPA support (running OSF only, not HPUX) has been contributed by Utah. This
235 includes improved ELF support, which I've started adapting for SPARC Solaris
236 2.x. Integration isn't completely, so it probably won't work.
238 HP9000/300 support, donated by HP, has been merged in.
240 Ian Taylor has finished the MIPS ECOFF (Ultrix, Irix) support.
242 Better error messages for unsupported configurations (e.g., hppa-hpux).
244 Test suite framework is starting to become reasonable.
246 ----------------------------------------------------------------
252 Some more merging of BFD and ELF code, but ELF still doesn't work.
254 ----------------------------------------------------------------
258 BFD merge is partly done. Adventurous souls may try giving configure the
259 "--with-bfd-assembler" option. Currently, ELF format requires it, a.out format
260 accepts it; SPARC CPU accepts it. It's the default only for OS "elf" or
261 "solaris". (ELF isn't really supported yet. It needs work. I've got some
262 code from Utah for HP-PA ELF, and from DG for m88k ELF, but they're not fully
265 The 68K opcode table has been split in half. It should now compile under gcc
266 without consuming ridiculous amounts of memory.
268 A couple data structures have been reduced in size. This should result in
269 saving a little bit of space at runtime.
271 Support for MIPS, from OSF and Ralph Campbell, has been merged in. The OSF
272 code provided ROSE format support, which I haven't merged in yet. (I can make
273 it available, if anyone wants to try it out.) Ralph's code, for BSD 4.4,
274 supports a.out format. We don't have ECOFF support in just yet; it's coming.
276 Support for the Hitachi H8/500 has been added.
278 VMS host and target support should be working now, thanks chiefly to Eric
281 ----------------------------------------------------------------
285 For m68k, support for more processors has been added: 68040, CPU32, 68851.
287 For i386, .align is now power-of-two; was number-of-bytes.
289 For m68k, "%" is now accepted before register names. For COFF format, which
290 doesn't use underscore prefixes for C labels, it is required, so variable "a0"
291 can be distinguished from the register.
293 Last public release was 1.38. Lots of configuration changes since then, lots
294 of new CPUs and formats, lots of bugs fixed.