gcc/config/arm/riscix.h

   1 /* Definitions of target machine for GNU compiler.  ARM RISCiX version.
   2    Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
   3    Contributed by Richard Earnshaw (rwe11@cl.cam.ac.uk), based on original
   4               work by Pieter `Tiggr' Schoenmakers (rcpieter@win.tue.nl)
   5               and Martin Simmons (@harleqn.co.uk).
   6
   7 This file is part of GNU CC.
   8
   9 GNU CC is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 2, or (at your option)
  12 any later version.
  13
  14 GNU CC is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GNU CC; see the file COPYING.  If not, write to
  21 the Free Software Foundation, 59 Temple Place - Suite 330,
  22 Boston, MA 02111-1307, USA.  */
  23
  24 /* Translation to find startup files.  On RISC iX boxes,
  25    crt0, mcrt0 and gcrt0.o are in /usr/lib.  */
  26 #define STARTFILE_SPEC  "\
  27   %{pg:/usr/lib/gcrt0.o%s}\
  28   %{!pg:%{p:/usr/lib/mcrt0.o%s}\
  29         %{!p:/usr/lib/crt0.o%s}}"
  30
  31 /* RISC iX has no concept of -lg */
  32 /* If -static is specified then link with -lc_n */
  33
  34 #ifndef LIB_SPEC
  35 #define LIB_SPEC "\
  36   %{g*:-lg}\
  37   %{!p:%{!pg:%{!static:-lc}%{static:-lc_n}}}\
  38   %{p:-lc_p}\
  39   %{pg:-lc_p}"
  40 #endif
  41
  42 /* The RISC iX assembler never deletes any symbols from the object module;
  43    and, by default, ld doesn't either.  -X causes local symbols starting
  44    with 'L' to be deleted, which is what we want.  */
  45 #ifndef LINK_SPEC
  46 #define LINK_SPEC "-X"
  47 #endif
  48
  49 #ifndef CPP_PREDEFINES
  50 #define CPP_PREDEFINES  \
  51     "-Darm -Driscix -Dunix -Asystem(unix) -Acpu(arm) -Amachine(arm)"
  52 #endif
  53
  54 #ifndef CPP_SPEC
  55 #define CPP_SPEC "%{m6:-D__arm6__} \
  56         %{mbsd:%{pedantic:%e-mbsd and -pedantic incompatible} -D_BSD_C} \
  57         %{mxopen:%{mbsd:%e-mbsd and -mxopen incompatible}               \
  58           %{pedantic:%e-mxopen and -pedantic incompatible} -D_XOPEN_C}  \
  59         %{!mbsd:%{!mxopen:%{!ansi: -D_BSD_C}}}"
  60 #endif
  61
  62 /* RISCiX has some weird symbol name munging, that is done to the object module
  63    after assembly, which enables multiple libraries to be supported within
  64    one (possibly shared) library.  It basically changes the symbol name of
  65    certain symbols (for example _bcopy is converted to _$bcopy if using BSD)
  66    Symrename's parameters are determined as follows:
  67      -mno-symrename     Don't run symrename
  68      -mbsd      symrename -BSD <file>
  69      -mxopen    symrename -XOPEN <file>
  70      -ansi      symrename - <file>
  71      <none>     symrename -BSD <file>
  72  */
  73
  74 #ifndef ASM_FINAL_SPEC
  75 #if !defined (CROSS_COMPILE)
  76 #define ASM_FINAL_SPEC "\
  77 %{!mno-symrename: \
  78         \n /usr/bin/symrename \
  79         -%{mbsd:%{pedantic:%e-mbsd and -pedantic incompatible}BSD}\
  80 %{mxopen:%{mbsd:%e-mbsd and -mxopen incompatible}\
  81 %{pedantic:%e-mxopen and -pedantic incompatible}XOPEN}\
  82 %{!mbsd:%{!mxopen:%{!ansi:BSD}}} %{c:%{o*:%*}%{!o*:%b.o}}%{!c:%U.o}}"
  83 #endif
  84 #endif
  85
  86 /* None of these is actually used in cc1.  If we don't define them in target
  87    switches cc1 complains about them.  For the sake of argument lets allocate
  88    bit 31 of target flags for such options.  */
  89 #define SUBTARGET_SWITCHES \
  90 {"bsd", 0x80000000}, {"xopen", 0x80000000}, {"no-symrename", 0x80000000},
  91
  92
  93 /* Run-time Target Specification.  */
  94 #define TARGET_VERSION  \
  95   fputs (" (ARM/RISCiX)", stderr);
  96
  97 /* This is used in ASM_FILE_START */
  98 #define ARM_OS_NAME "RISCiX"
  99
 100 /* Unsigned chars produces much better code than signed.  */
 101 #define DEFAULT_SIGNED_CHAR  0
 102
 103 /* Define this if the target system supports the function atexit from the
 104    ANSI C standard.  If this is not defined, and INIT_SECTION_ASM_OP is not
 105    defined, a default exit function will be provided to support C++.
 106    The man page only describes on_exit, but atexit is also there.  */
 107 #define HAVE_ATEXIT 1
 108
 109 /* Some systems use __main in a way incompatible with its use in gcc, in these
 110    cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
 111    give the same symbol without quotes for an alternative entry point.  You
 112    must define both, or neither. */
 113 #ifndef NAME__MAIN
 114 #define NAME__MAIN "__gccmain"
 115 #define SYMBOL__MAIN __gccmain
 116 #endif
 117
 118 /* size_t is "unsigned int" in RISCiX */
 119 #define SIZE_TYPE "unsigned int"
 120
 121 /* ptrdiff_t is "int" in RISCiX */
 122 #define PTRDIFF_TYPE "int"
 123
 124 /* Maths operation domain error number, EDOM */
 125 #define TARGET_EDOM 33
 126 #include "arm/aout.h"
 127
 128 /* The native RISCiX assembler does not support stabs of any kind; because
 129    the native assembler is not used by the compiler, Acorn didn't feel it was
 130    necessary to put them in!  */
 131
 132 #ifdef DBX_DEBUGGING_INFO
 133 #undef DBX_DEBUGGING_INFO
 134 #endif