sun2.h

linux下的gcc编译器

/* Definitions of target machine for GNU compiler.  Sun 68010 version.
   Copyright (C) 1987, 1988, 1995 Free Software Foundation, Inc.

This file is part of GNU CC.

GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */


#include "m68k/m68k.h"

/* See m68k.h.  0 means 68000 with no 68881.  */

#define TARGET_DEFAULT 0

/* Don't try using XFmode.  */
#undef LONG_DOUBLE_TYPE_SIZE
#define LONG_DOUBLE_TYPE_SIZE 64

/* Define __HAVE_68881 in preprocessor only if -m68881 is specified.
   This will control the use of inline 68881 insns in certain macros.
   Also inform the program which CPU this is for.  */

#define CPP_SPEC "%{m68881:-D__HAVE_68881__} \
%{!ansi:%{m68020:-Dmc68020}%{mc68020:-Dmc68020}%{!mc68020:%{!m68020:-Dmc68010}}}"

/* -m68020 requires special flags to the assembler.  */

#define ASM_SPEC \
 "%{m68020:-mc68020}%{mc68020:-mc68020}%{!mc68020:%{!m68020:-mc68010}} \
  %{fpic:-k} %{fPIC:-k} %{R} %{j} %{J} %{h} %{d2} %{keep-local-as-symbols:-L}"
  
/* Names to predefine in the preprocessor for this target machine.  */

#define CPP_PREDEFINES "-Dmc68000 -Dsun -Dunix -Asystem=unix  -Asystem=bsd -Acpu=m68k -Amachine=m68k"

/* Prevent error on `-sun2' and `-target sun2' options.  */

#define CC1_SPEC "%{sun2:} %{target:}"

/* These compiler options take an argument.  We ignore -target for now.  */

#define WORD_SWITCH_TAKES_ARG(STR)				\
 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR)				\
  || !strcmp (STR, "target") || !strcmp (STR, "assert"))

/* Specify what to link with.  */

/* Link with libg.a when debugging, for dbx's sake.  */
/* Include the support for -a when appropriate.  */
#define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
%{a:/usr/lib/bb_link.o -lc} "

/* Alignment of field after `int : 0' in a structure.  */

#undef EMPTY_FIELD_BOUNDARY
#define EMPTY_FIELD_BOUNDARY 16

/* Every structure or union's size must be a multiple of 2 bytes.  */

#define STRUCTURE_SIZE_BOUNDARY 16

/* This is BSD, so it wants DBX format.  */

#define DBX_DEBUGGING_INFO 1