e415d48872
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.
51 lines
967 B
C
51 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;
|
|
}
|