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Annotation of gcc/config/fx2800.h, revision 1.1

1.1     ! root        1: /* Target definitions for GNU compiler for Alliant FX/2800 w/Concentrix 2.x
        !             2:    Copyright (C) 1991 Free Software Foundation, Inc.
        !             3: 
        !             4:    Written by Ron Guilmette ([email protected]).
        !             5: 
        !             6: This file is part of GNU CC.
        !             7: 
        !             8: GNU CC is free software; you can redistribute it and/or modify
        !             9: it under the terms of the GNU General Public License as published by
        !            10: the Free Software Foundation; either version 2, or (at your option)
        !            11: any later version.
        !            12: 
        !            13: GNU CC is distributed in the hope that it will be useful,
        !            14: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            15: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            16: GNU General Public License for more details.
        !            17: 
        !            18: You should have received a copy of the GNU General Public License
        !            19: along with GNU CC; see the file COPYING.  If not, write to
        !            20: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            21: 
        !            22: /* The Alliant fx2800 running Concentrix 2.1 is weird.  This is basically
        !            23:    a BSD 4.3 based operating system, but it runs svr4 ELF format object
        !            24:    files and it somehow puts BSD stabs records into the ELF files for
        !            25:    symbolic debug information.  It also seems to use the assembler from
        !            26:    the svr4 reference port, but that assembler has probably been hacked
        !            27:    slightly to allow the BSD stabs to be smuggled in.
        !            28: 
        !            29:    Given that we need to use svr4-style pseudo-ops, and given that the
        !            30:    target object file format is ELF, we just include "i860v4.h" here so
        !            31:    as to pick-up a set of defines appropriate for for an svr4/ELF target
        !            32:    and then we just override the few things that are special for the FX/2800
        !            33:    and Concentrix.  */
        !            34: 
        !            35: #include "i860v4.h"
        !            36: 
        !            37: #undef DWARF_DEBUGGING_INFO
        !            38: #define DBX_DEBUGGING_INFO
        !            39: 
        !            40: /* Provide a set of pre-definitions and pre-assertions appropriate for
        !            41:    the i860 running Concentrix 2.1.  */
        !            42: 
        !            43: #undef CPP_PREDEFINES
        !            44: #define CPP_PREDEFINES "-Di860 -Dunix -DBSD4_3 -Dalliant -Asystem(unix) -Acpu(i860) -Amachine(i860)"
        !            45: 
        !            46: /* Undefine some things defined in i860.h because the native C compiler
        !            47:    on the FX/2800 emits code to do these operations inline.  For GCC,
        !            48:    we will use the default implementation of these things... i.e.
        !            49:    generating calls to libgcc1.c routines.  */
        !            50: 
        !            51: #undef DIVSI3_LIBCALL
        !            52: #undef UDIVSI3_LIBCALL
        !            53: #undef REMSI3_LIBCALL
        !            54: #undef UREMSI3_LIBCALL

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