OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgcc/] [config/] [sparc/] [crtfastmath.c] - Rev 777

Go to most recent revision | Compare with Previous | Blame | View Log

/*
 * Copyright (C) 2001, 2009 Free Software Foundation, Inc.
 * Contributed by David S. Miller (davem@redhat.com)
 *
 * This file 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 3, or (at your option) any
 * later version.
 * 
 * This file 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.
 * 
 * Under Section 7 of GPL version 3, you are granted additional
 * permissions described in the GCC Runtime Library Exception, version
 * 3.1, as published by the Free Software Foundation.
 *
 * You should have received a copy of the GNU General Public License and
 * a copy of the GCC Runtime Library Exception along with this program;
 * see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 * <http://www.gnu.org/licenses/>.
 */
 
#define FPRS_NS		(1 << 22)	/* Non-Standard fpu results */
 
static void __attribute__((constructor))
set_fast_math (void)
{
  unsigned int fsr;
 
  /* This works for the 64-bit case because, even if 32-bit ld/st of
     the fsr register modified the upper 32-bit, the only thing up there
     are the 3 other condition codes which are "do not care" at the time
     that this runs.  */
 
  __asm__("st %%fsr, %0"
	  : "=m" (fsr));
 
  fsr |= FPRS_NS;
 
  __asm__("ld %0, %%fsr"
	  : : "m" (fsr));
}
 

Go to most recent revision | Compare with Previous | Blame | View Log

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.