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msvcrt: Don't reset x87 in x86_64 fpreset.

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Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Piotr Caban 2021-08-04 18:04:56 +02:00 committed by Alexandre Julliard
parent f46ef017cd
commit f53b2095f3
1 changed files with 4 additions and 1 deletions
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5
dlls/msvcrt/math.c
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@ -5901,7 +5901,7 @@ int CDECL _finite(double num)
*/
void CDECL _fpreset(void)
{
#if (defined(__GNUC__) || defined(__clang__)) && (defined(__i386__) || defined(__x86_64__))
#if (defined(__GNUC__) || defined(__clang__)) && defined(__i386__)
const unsigned int x86_cw = 0x27f;
__asm__ __volatile__( "fninit; fldcw %0" : : "m" (x86_cw) );
if (sse2_supported)
@ -5909,6 +5909,9 @@ void CDECL _fpreset(void)
unsigned int cw = _MCW_EM, sw = 0;
_setfp_sse(&cw, ~0, &sw, ~0);
}
#elif defined(__x86_64__)
unsigned int cw = _MCW_EM, sw = 0;
_setfp_sse(&cw, ~0, &sw, ~0);
#else
FIXME( "not implemented\n" );
#endif