gcc/config/sparc/sunos4.h

/* Definitions of target machine for GNU compiler, for SunOS 4.x
   Copyright (C) 1994 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.  */

#define SUNOS4_SHARED_LIBRARIES 1

/* Use N_BINCL stabs.  */

#define DBX_USE_BINCL

#include "sparc/sparc.h"

/* The Sun as doesn't like unaligned data.  */
#define DWARF2_UNWIND_INFO 0

/* Override MACHINE_STATE_{SAVE,RESTORE} because we have special
   traps available which can get and set the condition codes
   reliably.  */
#undef MACHINE_STATE_SAVE
#define MACHINE_STATE_SAVE(ID)				\
  unsigned long int ms_flags, ms_saveret;		\
  asm volatile("ta	0x20\n\t"			\
	       "mov	%%g1, %0\n\t"			\
	       "mov	%%g2, %1\n\t"			\
	       : "=r" (ms_flags), "=r" (ms_saveret));

#undef MACHINE_STATE_RESTORE
#define MACHINE_STATE_RESTORE(ID)			\
  asm volatile("mov	%0, %%g1\n\t"			\
	       "mov	%1, %%g2\n\t"			\
	       "ta	0x21\n\t"			\
	       : /* no outputs */			\
	       : "r" (ms_flags), "r" (ms_saveret));