splet.h

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/* Definitions of target machine for GNU compiler, for SPARClet.
   Copyright (C) 1996, 1997 Free Software Foundation, Inc.
   Contributed by Doug Evans ([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.  */

#include "sparc/aout.h"

/* -mbroken-saverestore is not included here because the long term
   default is -mno-broken-saverestore.  */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_APP_REGS + MASK_EPILOGUE)

/* -mlive-g0 is only supported on the sparclet.  */
#undef SUBTARGET_SWITCHES
#define SUBTARGET_SWITCHES \
{"big-endian", -MASK_LITTLE_ENDIAN, "Generate code for big endian" }, \
{"little-endian", MASK_LITTLE_ENDIAN, "Generate code for little endian" }, \
{"live-g0", MASK_LIVE_G0, "Use g0 as a normal register" }, \
{"no-live-g0", -MASK_LIVE_G0, "Register g0 is fixed with a zero value" }, \
{"broken-saverestore", MASK_BROKEN_SAVERESTORE, "Enable save/restore bug workarounds" }, \
{"no-broken-saverestore", -MASK_BROKEN_SAVERESTORE, "Disable save/restore bug workarouns" },

#undef ASM_SPEC
#define ASM_SPEC "%{mlittle-endian:-EL} %(asm_cpu)"

/* Require the user to supply crt0.o.  */
#undef STARTFILE_SPEC
#define STARTFILE_SPEC ""

#undef LINK_SPEC
#define LINK_SPEC "%{mlittle-endian:-EL}"

/* sparclet chips are bi-endian.  */
#undef BYTES_BIG_ENDIAN
#define BYTES_BIG_ENDIAN (! TARGET_LITTLE_ENDIAN)
#undef WORDS_BIG_ENDIAN
#define WORDS_BIG_ENDIAN (! TARGET_LITTLE_ENDIAN)

#undef SUBTARGET_OVERRIDE_OPTIONS
#define SUBTARGET_OVERRIDE_OPTIONS 					\
  do {									\
    if (TARGET_LIVE_G0)							\
      {									\
	warning ("Option '-mlive-g0' deprecated.");			\
        target_flags &= ~MASK_LIVE_G0;					\
      }									\
    else if (TARGET_BROKEN_SAVERESTORE)					\
      {									\
	warning ("Option '-mbroken-saverestore' deprecated.");		\
        target_flags &= ~MASK_BROKEN_SAVERESTORE;			\
      }									\
  } while (0)