[PATCH 2/3] msvcrt: Implement _clearfp for arm
Martin Storsjö
martin at martin.st
Tue Aug 3 07:56:11 CDT 2021
Signed-off-by: Martin Storsjö <martin at martin.st>
---
dlls/msvcrt/math.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/dlls/msvcrt/math.c b/dlls/msvcrt/math.c
index 5b72005170d..7afc66e861c 100644
--- a/dlls/msvcrt/math.c
+++ b/dlls/msvcrt/math.c
@@ -5263,6 +5263,18 @@ unsigned int CDECL _clearfp(void)
if (fpsr & 0x80) flags |= _SW_DENORMAL;
fpsr &= ~0x9f;
__asm__ __volatile__( "msr fpsr, %0" :: "r" (fpsr) );
+#elif defined(__arm__)
+ 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
--
2.25.1
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