plexus.h

linux下的gcc编译器

/* Definitions of target machine for GNU compiler, for 680X0 based Plexus
   Computers running SYSVR2
   Copyright (C) 1990, 1994, 1996 Free Software Foundation, Inc.
   Contributed by Randy Welch ([e-mail]).

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.  */


/* The Plexus port of gcc requires you to use gas ( either 1.3X with COFF 
   patches or 2.X ),  If you use gas 2.X you have to use binutils-2.X.
      
   With using gas-2.X the Plexus gcc port is now capable of generating
   output suitable for use by gdb-4.X ( send mail to above address for
   info on getting gdb patches or other GNU items for the Plexus )

   This is configured for label output default by gas as LXXX instead of
   plexus cc/as combination requires .LXXX  */

#include "m68k/m68k.h"

/* Define __HAVE_68881 in preprocessor only if -m68881 is specified.
   This will control the use of inline 68881 insns in certain macros.  */

#define TARGET_DEFAULT (MASK_BITFIELD|MASK_68020)

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

#define CPP_SPEC "%{m68881:-D__HAVE_68881__}"
#define CPP_PREDEFINES "-Dm68 -Dunix -Dplexus -Asystem=unix  -Acpu=m68k -Amachine=m68k"

#if TARGET_DEFAULT & MASK_68020
#define ASM_SPEC \
"%{m68000:-mc68000}%{mc68000:-mc68000}%{!mc68000:%{!m68000:-mc68020}}"
#undef STRICT_ALIGNMENT
#define STRICT_ALIGNMENT 0
#else
#define ASM_SPEC\
"%{m68020:-mc68020}%{mc68020:-mc68020}%{!mc68020:%{!mc68020:-mc68000}}"
#endif

/***************************************************************************/
/*  Un comment the following if you want adb to be able to follow a core   */
/*  file if you compile a program with -O                                  */
/***************************************************************************/
/* #define FRAME_POINTER_REQUIRED */

/* Let's be compatible with the Plexus C compiler by default.  Why not?  */
#define PLEXUS_CC_COMPAT

#ifdef PLEXUS_CC_COMPAT
#define STRUCTURE_SIZE_BOUNDARY 16	/* for compatibility with cc */
#undef STACK_BOUNDARY
#define STACK_BOUNDARY 32		/* ditto */
#endif

#undef NEED_PROBE
#define NEED_PROBE -132			/* plexus needs a stack probe */

/***********************************************************************/
/* if you have binutils-2.X and gas-2.X running you can generate code  */
/* that gdb can understand ( gdb support available for 4.11 )          */
/*                                                                     */
/* If you use gas-1.3X don't define this as the version of the coff    */
/* patches for gas-1.3x ( stabs in coff ) does not generate coff debug */
/* syms                                                                */
/***********************************************************************/
#define HAVE_GAS_2_X

#ifdef HAVE_GAS_2_X
#undef DBX_DEBUGGING_INFO
#define SDB_DEBUGGING_INFO 1

#undef ASM_FILE_START
#define ASM_FILE_START(FILE) \
  output_file_directive((FILE), main_input_filename)

#else
#undef DBX_DEBUGGING_INFO		/* no real debugger */
#undef SDB_DEBUGGING_INFO
#endif
#define TARGET_MEM_FUNCTIONS

/***********************************************************************/
/*                          items for collect2                         */
/***********************************************************************/

#define NM_FLAGS ""

#define SIZE_TYPE "int"