5 Support for Motorola 68HC11 and 68HC12.
7 Support for Texas Instruments TMS320C54x (tic54x).
11 x86 gas has a new .arch pseudo op to specify the target CPU architecture.
13 x86 gas -q command line option quietens warnings about register size changes
14 due to suffix, indirect jmp/call without `*', stand-alone prefixes, and
15 translating various deprecated floating point instructions.
19 Support for ATMEL AVR.
21 Support for IBM 370 ELF. Somewhat experimental.
23 Support for numbers with suffixes.
25 Added support for breaking to the end of repeat loops.
27 Added support for parallel instruction syntax (DOUBLEBAR_PARALLEL).
29 New .elseif pseudo-op added.
31 New --fatal-warnings option.
33 picoJava architecture support added.
35 Motorola MCore 210 processor support added.
37 A new pseudo-op .intel_syntax has been implemented to allow gas to parse i386
38 assembly programs with intel syntax.
40 New pseudo-ops .func,.endfunc to aid in debugging user-written assembler code.
42 Added -gdwarf2 option to generate DWARF 2 debugging information.
44 Full 16-bit mode support for i386.
46 Greatly improved instruction operand checking for i386. This change will
47 produce errors or warnings on incorrect assembly code that previous versions of
48 gas accepted. If you get unexpected messages from code that worked with older
49 versions of gas, please double check the code before reporting a bug.
51 Weak symbol support added for COFF targets.
53 Mitsubishi D30V support added.
55 Texas Instruments c80 (tms320c80) support added.
57 i960 ELF support added.
59 ARM ELF support added.
63 Texas Instruments c30 (tms320c30) support added.
65 The assembler now optimizes the exception frame information generated by egcs
66 and gcc 2.8. The new --traditional-format option disables this optimization.
68 Added --gstabs option to generate stabs debugging information.
70 The -a option takes a new suboption, m (e.g., -alm) to expand macros in a
73 Added -MD option to print dependencies.
81 Motorola ColdFire 5200 support added (configure for m68k and use -m5200).
83 Alpha/VMS support added.
85 m68k options --base-size-default-16, --base-size-default-32,
86 --disp-size-default-16, and --disp-size-default-32 added.
88 The alignment directives now take an optional third argument, which is the
89 maximum number of bytes to skip. If doing the alignment would require skipping
90 more than the given number of bytes, the alignment is not done at all.
92 The ELF assembler has a new pseudo-op, .symver, used for symbol versioning.
94 The -a option takes a new suboption, c (e.g., -alc), to skip false conditionals
97 Added new pseudo-op, .equiv; it's like .equ, except that it is an error if the
98 symbol is already defined.
102 The PowerPC assembler now allows the use of symbolic register names (r0, etc.)
103 if -mregnames is used. Symbolic names preceded by a '%' (%r0, etc.) can be
104 used any time. PowerPC 860 move to/from SPR instructions have been added.
106 Alpha Linux (ELF) support added.
108 PowerPC ELF support added.
110 m68k Linux (ELF) support added.
112 i960 Hx/Jx support added.
114 i386/PowerPC gnu-win32 support added.
116 SCO ELF support added. For OpenServer 5 targets (i386-unknown-sco3.2v5) the
117 default is to build COFF-only support. To get a set of tools that generate ELF
118 (they'll understand both COFF and ELF), you must configure with
119 target=i386-unknown-sco3.2v5elf.
121 m88k-motorola-sysv3* support added.
125 Gas now directly supports macros, without requiring GASP.
127 Gas now has an MRI assembler compatibility mode. Use -M or --mri to select MRI
128 mode. The pseudo-op ``.mri 1'' will switch into the MRI mode until the ``.mri
129 0'' is seen; this can be convenient for inline assembler code.
131 Added --defsym SYM=VALUE option.
133 Added -mips4 support to MIPS assembler.
135 Added PIC support to Solaris and SPARC SunOS 4 assembler.
139 Converted this directory to use an autoconf-generated configure script.
141 ARM support, from Richard Earnshaw.
143 Updated VMS support, from Pat Rankin, including considerably improved debugging
146 Support for the control registers in the 68060.
148 Handles (ignores) a new directive ".this_GCC_requires_the_GNU_assembler", to
149 provide for possible future gcc changes, for targets where gas provides some
150 features not available in the native assembler. If the native assembler is
151 used, it should become obvious pretty quickly what the problem is.
153 Usage message is available with "--help".
155 The GNU Assembler Preprocessor (gasp) is included. (Actually, it was in 2.3
156 also, but didn't get into the NEWS file.)
158 Weak symbol support for a.out.
160 A bug in the listing code which could cause an infinite loop has been fixed.
161 Bugs in listings when generating a COFF object file have also been fixed.
163 Initial i386-svr4 PIC implementation from Eric Youngdale, based on code by Paul
166 Improved Alpha support. Immediate constants can have a much larger range now.
167 Support for the 21164 has been contributed by Digital.
169 Updated ns32k (pc532-mach, netbsd532) support from Ian Dall.
173 Mach i386 support, by David Mackenzie and Ken Raeburn.
175 RS/6000 and PowerPC support by Ian Taylor.
177 VMS command scripts (make-gas.com, config-gas.com) have been worked on a bit,
178 based on mail received from various people. The `-h#' option should work again
181 HP-PA work, by Jeff Law. Note, for the PA, gas-2.3 has been designed to work
182 with gdb-4.12 and gcc-2.6. As gcc-2.6 has not been released yet, a special
183 version of gcc-2.5.8 has been patched to work with gas-2.3. You can retrieve
184 this special version of gcc-2.5.8 via anonymous ftp from jaguar.cs.utah.edu
185 in the "dist" directory.
187 Vax support in gas fixed for BSD, so it builds and seems to run a couple simple
188 tests okay. I haven't put it through extensive testing. (GNU make is
189 currently required for BSD 4.3 builds.)
191 Support for the DEC Alpha, running OSF/1 (ECOFF format). The gas support is
192 based on code donated by CMU, which used an a.out-based format. I'm afraid the
193 alpha-a.out support is pretty badly mangled, and much of it removed; making it
194 work will require rewriting it as BFD support for the format anyways.
198 The test suites have been fixed up a bit, so that they should work with a
199 couple different versions of expect and dejagnu.
201 Symbols' values are now handled internally as expressions, permitting more
202 flexibility in evaluating them in some cases. Some details of relocation
203 handling have also changed, and simple constant pool management has been added,
204 to make the Alpha port easier.
206 New option "--statistics" for printing out program run times. This is intended
207 to be used with the gcc "-Q" option, which prints out times spent in various
208 phases of compilation. (You should be able to get all of them printed out with
209 "gcc -Q -Wa,--statistics", I think.)
211 ----------------------------------------------------------------
215 RS/6000 AIX and MIPS SGI Irix 5 support has been added.
217 Configurations that are still in development (and therefore are convenient to
218 have listed in configure.in) still get rejected without a minor change to
219 gas/Makefile.in, so people not doing development work shouldn't get the
220 impression that support for such configurations is actually believed to be
223 The program name (usually "as") is printed when a fatal error message is
224 displayed. This should prevent some confusion about the source of occasional
225 messages about "internal errors".
227 ELF support is falling into place. Support for the 386 should be working.
228 Support for SPARC Solaris is in. HPPA support from Utah is being integrated.
230 Symbol values are maintained as expressions instead of being immediately boiled
231 down to add-symbol, sub-symbol, and constant. This permits slightly more
232 complex calculations involving symbols whose values are not alreadey known.
234 DBX-style debugging info ("stabs") is now supported for COFF formats.
235 If any stabs directives are seen in the source, GAS will create two new
236 sections: a ".stab" and a ".stabstr" section. The format of the .stab
237 section is nearly identical to the a.out symbol format, and .stabstr is
238 its string table. For this to be useful, you must have configured GCC
239 to generate stabs (by defining DBX_DEBUGGING_INFO), and must have a GDB
240 that can use the stab sections (4.11 or later).
242 LynxOS, on i386 and m68k platforms, is now supported. SPARC LynxOS
243 support is in progress.
245 ----------------------------------------------------------------
249 Several small fixes for i386-aix (PS/2) support from Minh Tran-Le have been
250 incorporated, but not well tested yet.
252 Altered the opcode table split for m68k; it should require less VM to compile
255 Some minor adjustments to add (Convergent Technologies') Miniframe support,
256 suggested by Ronald Cole.
258 HPPA support (running OSF only, not HPUX) has been contributed by Utah. This
259 includes improved ELF support, which I've started adapting for SPARC Solaris
260 2.x. Integration isn't completely, so it probably won't work.
262 HP9000/300 support, donated by HP, has been merged in.
264 Ian Taylor has finished the MIPS ECOFF (Ultrix, Irix) support.
266 Better error messages for unsupported configurations (e.g., hppa-hpux).
268 Test suite framework is starting to become reasonable.
270 ----------------------------------------------------------------
276 Some more merging of BFD and ELF code, but ELF still doesn't work.
278 ----------------------------------------------------------------
282 BFD merge is partly done. Adventurous souls may try giving configure the
283 "--with-bfd-assembler" option. Currently, ELF format requires it, a.out format
284 accepts it; SPARC CPU accepts it. It's the default only for OS "elf" or
285 "solaris". (ELF isn't really supported yet. It needs work. I've got some
286 code from Utah for HP-PA ELF, and from DG for m88k ELF, but they're not fully
289 The 68K opcode table has been split in half. It should now compile under gcc
290 without consuming ridiculous amounts of memory.
292 A couple data structures have been reduced in size. This should result in
293 saving a little bit of space at runtime.
295 Support for MIPS, from OSF and Ralph Campbell, has been merged in. The OSF
296 code provided ROSE format support, which I haven't merged in yet. (I can make
297 it available, if anyone wants to try it out.) Ralph's code, for BSD 4.4,
298 supports a.out format. We don't have ECOFF support in just yet; it's coming.
300 Support for the Hitachi H8/500 has been added.
302 VMS host and target support should be working now, thanks chiefly to Eric
305 ----------------------------------------------------------------
309 For m68k, support for more processors has been added: 68040, CPU32, 68851.
311 For i386, .align is now power-of-two; was number-of-bytes.
313 For m68k, "%" is now accepted before register names. For COFF format, which
314 doesn't use underscore prefixes for C labels, it is required, so variable "a0"
315 can be distinguished from the register.
317 Last public release was 1.38. Lots of configuration changes since then, lots
318 of new CPUs and formats, lots of bugs fixed.