xm-rs6000.h

早期freebsd实现

/* Configuration for GNU C-compiler for IBM RS/6000.
   Copyright (C) 1990 Free Software Foundation, Inc.
   Contributed by Richard Kenner ([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, 675 Mass Ave, Cambridge, MA 02139, USA.  */


/* #defines that need visibility everywhere.  */
#define	FALSE	0
#define	TRUE	1

/* This describes the machine the compiler is hosted on.  */
#define	HOST_BITS_PER_CHAR	8
#define	HOST_BITS_PER_SHORT	16
#define	HOST_BITS_PER_INT	32
#define	HOST_BITS_PER_LONG	32
#define HOST_BITS_PER_LONGLONG 64

#define	HOST_WORDS_BIG_ENDIAN

/* target machine dependencies.
   tm.h is a symbolic link to the actual target specific file.   */
#include "tm.h"

/* Arguments to use with `exit'.  */
#define	SUCCESS_EXIT_CODE	0
#define	FAILURE_EXIT_CODE	2
#define	FATAL_EXIT_CODE		3

/* If compiled with GNU C, use the built-in alloca.  */
#ifdef __GNUC__
#define alloca __builtin_alloca
#else
#define USE_C_ALLOCA
#endif

/* If not compiled with GNU C, use only int bitfields.  */
#ifndef __GNUC__
#define	ONLY_INT_FIELDS
#endif

/* AIX is a flavor of System V */
#define	USG

/* This is the only version of nm that collect2 can work with.  */
#define REAL_NM_FILE_NAME "/usr/ucb/nm"

/* Big buffers improve performance.  */
#define IO_BUFFER_SIZE (0x8000 - 4096)