minix/lib/libc/arch/sparc64/gen/fpsetmask.c
Lionel Sambuc e415d48872 Libc update to simplify merge.
Bumping libc files for unsupported architectures, to simplify merging.
A bunch of small fixes:
 * in libutil update
 * the macro in endian.h
 * some undefined types due to clear separation from host.
 * Fix a warning for cdbr.c

Some modification which were required for the new build system:
 * inclusion path for const.h in sconst, still hacky
 * Removed default malloc.c which conflicts on some occasions.
2012-11-15 16:07:29 +01:00

50 lines
967 B
C

/* $NetBSD: fpsetmask.c,v 1.6 2012/03/17 21:35:06 martin Exp $ */
/*
* Written by J.T. Conklin, Apr 10, 1995
* Public domain.
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: fpsetmask.c,v 1.6 2012/03/17 21:35:06 martin Exp $");
#endif /* LIBC_SCCS and not lint */
#include "namespace.h"
#include <sys/types.h>
#include <ieeefp.h>
#ifdef __weak_alias
__weak_alias(fpsetmask,_fpsetmask)
#endif
#ifdef EXCEPTIONS_WITH_SOFTFLOAT
extern fp_except _softfloat_float_exception_mask;
#endif
fp_except
fpsetmask(mask)
fp_except mask;
{
fp_except old;
fp_except new;
__asm("st %%fsr,%0" : "=m" (*&old));
new = old;
new &= ~(0x1f << 23);
new |= ((mask & 0x1f) << 23);
__asm("ld %0,%%fsr" : : "m" (*&new));
old = ((uint32_t)old >> 23) & 0x1f;
#ifdef EXCEPTIONS_WITH_SOFTFLOAT
/* update softfloat mask as well */
old |= _softfloat_float_exception_mask;
_softfloat_float_exception_mask = mask;
#endif
return old;
}