134 lines
5.7 KiB
Gnuplot
134 lines
5.7 KiB
Gnuplot
This is the beta-test version of the GNU assembler. (Probably
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around Version 1.35, but check version.c which gets updated more
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often than this readme.)
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The assembler has been modified to support a feature that is
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potentially useful when assembling compiler output, but which may
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confuse assembly language programmers. If assembler encounters a
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.word pseudo-op of the form symbol1-symbol2 (the difference of two
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symbols), and the difference of those two symbols will not fit in 16
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bits, the assembler will create a branch around a long jump to
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symbol1, and insert this into the output directly before the next
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label: The .word will (instead of containing garbage, or giving an
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error message) contain (the address of the long jump)-symbol2. This
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allows the assembler to assemble jump tables that jump to locations
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very far away into code that works properly. If the next label is
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more than 32K away from the .word, you lose (silently) RMS claims
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this will never happen. If the -k option is given, you will get a
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warning message when this happens.
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These files are currently set up to allow you to compile all of the
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versions of the assembler (68020, VAX, ns32k, and i386) on the same
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machine. To compile the 68020 version, type 'make a68'. To compile
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the VAX version, type 'make avax'. To compile the ns32k version,
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type 'make a32k'. To compile the Intel 80386 version, type 'make
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a386'. The Makefile contains instructions on how to make one of the
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assemblers compile as the default.
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Before you can compile the 68020 version of the assembler, you must
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make m68k.h be a link to m-sun3.h , m-hpux.h or m-generic.h . If
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you are on a SUN-3 (or other machine that uses a magic number of
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(2 << 16) | OMAGIC type 'ln -s m-sun3.h m68k.h' else if you are on a
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machine running HP-UX, type 'ln m-hpux.h m689k.h' else type
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'ln -s m-generic.h m68k.h' If your machine does not support symbolic
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links, omit the '-s'.
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See the instructions in the Makefile for compiling gas for the Sequent
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Symmetry (dynix 3.0.12 + others?) or for the HP 9000/300
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If your machine does not have both varargs.h and vfprintf(), but does have
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_doprnt() add -DNO_VARARGS to the CFLAGS line in the makefile. If your
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machine has neither vfprintf() or _doprnt(), you will have to change
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messages.c in order to get readable error messages from the assembler.
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REPORTING BUGS IN GAS
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Bugs in gas should be reported to bug-gnu-utils@prep.ai.mit.edu If you can't
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get through to prep, try hack@gnu.ai.mit.edu or hack@media-lab.media.mit.edu
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If you report a bug in GAS, please remember to include:
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A description of exactly what went wrong.
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The type of machine GAS was running on (VAX, 68020, etc),
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The Operating System GAS was running under.
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The options given to GAS.
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The actual input file that caused the problem.
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It is silly to report a bug in GAS without including an input file for
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GAS. Don't ask us to generate the file just because you made it from
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files you think we have access to.
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1. You might be mistaken.
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2. It might take us a lot of time to install things to regenerate that file.
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3. We might get a different file from the one you got, and might not see any
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bug.
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To save us these delays and uncertainties, always send the input file
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for the program that failed.
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If the input file is very large, and you are on the internet, you may
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want to make it avaliable for anonymous FTP instead of mailing it. If you
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do, include instructions for FTP'ing it in your bug report.
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------------------------------ README.APOLLO ---------------------------------
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The changes required to get the GNU C compiler running on
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Apollo 68K platforms are available via anonymous ftp from
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labrea.stanford.edu (36.8.0.47) in the form of a compressed
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tar file named "/pub/gnu/apollo-gcc-1.37.tar.Z".
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The size of the file is 84145 bytes.
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To build GCC for the Apollo you'll need the virgin FSF
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distributions of bison-1.03, gas-1.34, and gcc-1.37. They
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are also on labrea.stanford.edu as well as prep.ai.mit.edu.
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My changes are to enable gas to produce Apollo COFF object
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files and allow gcc to parse some of the syntax extensions
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which appear in Apollo C header files. Note that the
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COFF encapsulation technique cannot be used on the Apollo.
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The tar file should be unpacked in the directory containing
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the gas-1.34 and gcc-1.37 directories; a few files will be overlaid,
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and an APOLLO-GCC-README file will appear in the top directory.
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This file contains detailed instructions on how to proceed.
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These changes will only work for SR10.1 or later systems, using
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the 6.6 or later version of the Apollo C compiler.
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If you do not have ftp access, I can mail you the changes in the
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form of diffs; they are approximately 40K in length. If you request
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them, be sure to give me a voice phone number so I can contact you
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in case I can't send you mail; I've had several requests in the
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past from people I can't contact.
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By the way, I'm working on getting the GNU C++ compiler running;
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there are a couple problems to solve. I hope to be able to announce
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the Apollo version shortly after the 1.37 version is released.
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John Vasta Hewlett-Packard Apollo Systems Division
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vasta@apollo.hp.com M.S. CHA-01-LT
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(508) 256-6600 x6362 300 Apollo Drive, Chelmsford, MA 01824
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UUCP: {decwrl!decvax, mit-eddie, attunix}!apollo!vasta
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------------------------------------
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You might refer others who are interested in a similar thing.
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Kevin Buchs buchs@mayo.edu
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------------------------------ README.COFF -----------------------------------
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If you have a COFF system, you may wish to aquire
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UUCP: osu-cis!~/gnu/coff/gnu-coff.tar.Z
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or
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FTP: tut.cis.ohio-state.edu:/pub/gnu/coff/gnu-coff.tar.Z
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These contain patches for gas that will make it produce COFF output.
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I have never seen these patches, so I don't know how well they work.
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