msvcrt: Implement _clearfp for arm.

Signed-off-by: Martin Storsjö <martin@martin.st> Signed-off-by: Piotr Caban <piotr@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

msvcrt: Implement _clearfp for arm.
1b6f59b5 · Martin Storsjö · Alexandre Julliard · 70400c93 · 1b6f59b5
Commit 1b6f59b5 authored Aug 03, 2021 by Martin Storsjö Committed by Alexandre Julliard Aug 03, 2021
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math.c dlls/msvcrt/math.c +12 -0

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--- a/dlls/msvcrt/math.c
+++ b/dlls/msvcrt/math.c
@@ -5260,6 +5260,18 @@ unsigned int CDECL _clearfp(void)
    if (fpsr & 0x80) flags |= _SW_DENORMAL;
    fpsr &= ~0x9f;
    __asm__ __volatile__( "msr fpsr, %0" :: "r" (fpsr) );
+#elif defined(__arm__) && !defined(__SOFTFP__)
+    DWORD fpscr;
+
+    __asm__ __volatile__( "vmrs %0, fpscr" : "=r" (fpscr) );
+    if (fpscr & 0x1)  flags |= _SW_INVALID;
+    if (fpscr & 0x2)  flags |= _SW_ZERODIVIDE;
+    if (fpscr & 0x4)  flags |= _SW_OVERFLOW;
+    if (fpscr & 0x8)  flags |= _SW_UNDERFLOW;
+    if (fpscr & 0x10) flags |= _SW_INEXACT;
+    if (fpscr & 0x80) flags |= _SW_DENORMAL;
+    fpscr &= ~0x9f;
+    __asm__ __volatile__( "vmsr fpscr, %0" :: "r" (fpscr) );
 #else
    FIXME( "not implemented\n" );
 #endif