some news
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Ken Raeburn
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-*- text -*-
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Changes since 2.3:
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Converted this directory to use an autoconf-generated configure script.
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ARM support, from Richard Earnshaw.
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Updated VMS support, from Pat Rankin, including considerably improved debugging
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support.
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Support for the control registers in the 68060.
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Handles (ignores) a new directive ".this_GCC_requires_the_GNU_assembler", to
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provide for possible future gcc changes, for targets where gas provides some
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features not available in the native assembler. If the native assembler is
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used, it should become obvious pretty quickly what the problem is.
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Usage message is available with "--help".
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Weak symbol support for a.out.
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A bug in the listing code which could cause an infinite loop has been fixed.
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Bugs in listings when generating a COFF object file have also been fixed.
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Initial i386-svr4 PIC implementation from Eric Youngdale, based on code by Paul
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Kranenburg. This code was oriented towards gas version 1.xx; in updating some
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aspects of it for version 2, I broke it.
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Improved Alpha support. Immediate constants can have a much larger range now.
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Support for the 21164 has been added.
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Updated ns32k (pc532-mach, netbsd532) support from Ian Dall.
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Changes since 2.2:
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Mach i386 support, by David Mackenzie and Ken Raeburn.
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RS/6000 and PowerPC support by Ian Taylor.
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VMS command scripts (make-gas.com, config-gas.com) have been worked on a bit,
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based on mail received from various people. The `-h#' option should work again
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too.
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HP-PA work, by Jeff Law. Note, for the PA, gas-2.3 has been designed to work
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with gdb-4.12 and gcc-2.6. As gcc-2.6 has not been released yet, a special
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version of gcc-2.5.8 has been patched to work with gas-2.3. You can retrieve
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this special version of gcc-2.5.8 via anonymous ftp from jaguar.cs.utah.edu
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in the "dist" directory.
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Vax support in gas fixed for BSD, so it builds and seems to run a couple simple
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tests okay. I haven't put it through extensive testing. (GNU make is
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currently required for BSD 4.3 builds.)
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Support for the DEC Alpha, running OSF/1 (ECOFF format). The gas support is
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based on code donated by CMU, which used an a.out-based format. I'm afraid the
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alpha-a.out support is pretty badly mangled, and much of it removed; making it
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work will require rewriting it as BFD support for the format anyways.
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Irix 5 support.
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The test suites have been fixed up a bit, so that they should work with a
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couple different versions of expect and dejagnu.
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Symbols' values are now handled internally as expressions, permitting more
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flexibility in evaluating them in some cases. Some details of relocation
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handling have also changed, and simple constant pool management has been added,
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to make the Alpha port easier.
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New option "--statistics" for printing out program run times. This is intended
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to be used with the gcc "-Q" option, which prints out times spent in various
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phases of compilation. (You should be able to get all of them printed out with
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"gcc -Q -Wa,--statistics", I think.)
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----------------------------------------------------------------
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Changes since 2.1:
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RS/6000 AIX and MIPS SGI Irix 5 support has been added.
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Configurations that are still in development (and therefore are convenient to
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have listed in configure.in) still get rejected without a minor change to
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gas/Makefile.in, so people not doing development work shouldn't get the
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impression that support for such configurations is actually believed to be
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reliable.
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The program name (usually "as") is printed when a fatal error message is
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displayed. This should prevent some confusion about the source of occasional
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messages about "internal errors".
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ELF support is falling into place. Support for the 386 should be working.
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Support for SPARC Solaris is in. HPPA support from Utah is being integrated.
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Symbol values are maintained as expressions instead of being immediately boiled
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down to add-symbol, sub-symbol, and constant. This permits slightly more
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complex calculations involving symbols whose values are not alreadey known.
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DBX-style debugging info ("stabs") is now supported for COFF formats.
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If any stabs directives are seen in the source, GAS will create two new
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sections: a ".stab" and a ".stabstr" section. The format of the .stab
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section is nearly identical to the a.out symbol format, and .stabstr is
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its string table. For this to be useful, you must have configured GCC
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to generate stabs (by defining DBX_DEBUGGING_INFO), and must have a GDB
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that can use the stab sections (4.11 or later).
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LynxOS, on i386 and m68k platforms, is now supported. SPARC LynxOS
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support is in progress.
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----------------------------------------------------------------
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Changes for 2.1:
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Several small fixes for i386-aix (PS/2) support from Minh Tran-Le have been
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incorporated, but not well tested yet.
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Altered the opcode table split for m68k; it should require less VM to compile
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with gcc now.
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Some minor adjustments to add (Convergent Technologies') Miniframe support,
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suggested by Ronald Cole.
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HPPA support (running OSF only, not HPUX) has been contributed by Utah. This
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includes improved ELF support, which I've started adapting for SPARC Solaris
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2.x. Integration isn't completely, so it probably won't work.
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HP9000/300 support, donated by HP, has been merged in.
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Ian Taylor has finished the MIPS ECOFF (Ultrix, Irix) support.
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Better error messages for unsupported configurations (e.g., hppa-hpux).
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Test suite framework is starting to become reasonable.
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----------------------------------------------------------------
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Changes for 2.0:
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Mostly bug fixes.
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Some more merging of BFD and ELF code, but ELF still doesn't work.
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----------------------------------------------------------------
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Changes for 1.94:
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BFD merge is partly done. Adventurous souls may try giving configure the
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"--with-bfd-assembler" option. Currently, ELF format requires it, a.out format
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accepts it; SPARC CPU accepts it. It's the default only for OS "elf" or
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"solaris". (ELF isn't really supported yet. It needs work. I've got some
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code from Utah for HP-PA ELF, and from DG for m88k ELF, but they're not fully
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merged yet.)
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The 68K opcode table has been split in half. It should now compile under gcc
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without consuming ridiculous amounts of memory.
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A couple data structures have been reduced in size. This should result in
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saving a little bit of space at runtime.
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Support for MIPS, from OSF and Ralph Campbell, has been merged in. The OSF
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code provided ROSE format support, which I haven't merged in yet. (I can make
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it available, if anyone wants to try it out.) Ralph's code, for BSD 4.4,
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supports a.out format. We don't have ECOFF support in just yet; it's coming.
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Support for the Hitachi H8/500 has been added.
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VMS host and target support should be working now, thanks chiefly to Eric
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Youngdale.
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----------------------------------------------------------------
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Changes for 1.93.01:
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For m68k, support for more processors has been added: 68040, CPU32, 68851.
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For i386, .align is now power-of-two; was number-of-bytes.
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For m68k, "%" is now accepted before register names. For COFF format, which
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doesn't use underscore prefixes for C labels, it is required, so variable "a0"
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can be distinguished from the register.
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Last public release was 1.38. Lots of configuration changes since then, lots
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of new CPUs and formats, lots of bugs fixed.
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Local variables:
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fill-column: 79
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End:
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