gcc/config/i386/scodbx.h

   1 /* Definitions for Intel 386 running SCO Unix System V,
   2    using dbx-in-coff encapsulation.
   3    Copyright (C) 1992, 1995, 1996, 1999 Free Software Foundation, Inc.
   4
   5 This file is part of GNU CC.
   6
   7 GNU CC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU CC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU CC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 #include "i386/svr3dbx.h"
  23
  24 /* Overridden defines for SCO systems from sco.h. */
  25
  26 /* By default, target has a 80387, uses IEEE compatible arithmetic,
  27    and returns float values in the 387, ie,
  28    (TARGET_80387 | TARGET_FLOAT_RETURNS_IN_80387)
  29
  30    SCO's software emulation of a 387 fails to handle the `fucomp'
  31    opcode.  fucomp is only used when generating IEEE compliant code.
  32    So don't make TARGET_IEEE_FP default for SCO. */
  33
  34 #undef TARGET_SUBTARGET_DEFAULT
  35 #define TARGET_SUBTARGET_DEFAULT (MASK_80387 | MASK_FLOAT_RETURNS)
  36
  37 /* Use crt1.o as a startup file and crtn.o as a closing file.  */
  38
  39 #undef STARTFILE_SPEC
  40 #define STARTFILE_SPEC \
  41   "%{!r:%{!z:svr3.ifile%s}%{z:svr3z.ifile%s}}\
  42    %{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}"
  43
  44 /* Library spec, including SCO international language support. */
  45
  46 #undef LIB_SPEC
  47 #define LIB_SPEC \
  48  "%{p:-L/usr/lib/libp}%{pg:-L/usr/lib/libp} %{scointl:libintl.a%s} -lc"
  49
  50 /* Specify predefined symbols in preprocessor.  */
  51
  52 #undef CPP_PREDEFINES
  53 #define CPP_PREDEFINES "-Dunix -DM_UNIX -DM_I386 -DM_COFF -DM_WORDSWAP -Asystem=svr3"
  54
  55 #undef CPP_SPEC
  56 #define CPP_SPEC "%(cpp_cpu) %{scointl:-DM_INTERNAT}"
  57
  58 /* This spec is used for telling cpp whether char is signed or not.  */
  59
  60 #undef SIGNED_CHAR_SPEC
  61 #if DEFAULT_SIGNED_CHAR
  62 #define SIGNED_CHAR_SPEC \
  63  "%{funsigned-char:-D__CHAR_UNSIGNED__ -D_CHAR_UNSIGNED}"
  64 #else
  65 #define SIGNED_CHAR_SPEC \
  66  "%{!fsigned-char:-D__CHAR_UNSIGNED__ -D_CHAR_UNSIGNED}"
  67 #endif
  68
  69 /* caller has to pop the extra argument passed to functions that return
  70    structures. */
  71
  72 #undef RETURN_POPS_ARGS
  73 #define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE)   \
  74   ((FUNDECL) && TREE_CODE (FUNDECL) == IDENTIFIER_NODE ? 0      \
  75    : (TARGET_RTD                                                \
  76       && (TYPE_ARG_TYPES (FUNTYPE) == 0                         \
  77           || (TREE_VALUE (tree_last (TYPE_ARG_TYPES (FUNTYPE))) \
  78               == void_type_node))) ? (SIZE)                     \
  79    : 0)
  80 /* On other 386 systems, the last line looks like this:
  81    : (aggregate_value_p (TREE_TYPE (FUNTYPE))) ? GET_MODE_SIZE (Pmode) : 0)  */
  82
  83 /* Handle #pragma pack. */
  84 #define HANDLE_SYSV_PRAGMA