Alexandre Julliard : ntdll: Fix inverted floating point masks on ARM64EC.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: be77f0c83f5268285dc1f35d089c9278342fbf3c
URL:    https://gitlab.winehq.org/wine/wine/-/commit/be77f0c83f5268285dc1f35d089c927...

Author: Alexandre Julliard <julliard(a)winehq.org>
Date:   Thu Jun  6 10:47:02 2024 +0200

ntdll: Fix inverted floating point masks on ARM64EC.

---

 dlls/ntdll/unwind.h | 40 ++++++++++++++++++++--------------------
 1 file changed, 20 insertions(+), 20 deletions(-)

diff --git a/dlls/ntdll/unwind.h b/dlls/ntdll/unwind.h
index 78a2df8f41e..5b29969eb81 100644
--- a/dlls/ntdll/unwind.h
+++ b/dlls/ntdll/unwind.h
@@ -83,16 +83,16 @@ static inline UINT64 mxcsr_to_fpcsr( UINT mxcsr )
     if (mxcsr & 0x0010) fpsr |= 0x0008;    /* underflow */
     if (mxcsr & 0x0020) fpsr |= 0x0010;    /* precision */
 
-    if (mxcsr & 0x0040) fpcr |= 0x0001;    /* denormals are zero */
-    if (mxcsr & 0x0080) fpcr |= 0x0100;    /* invalid operation mask */
-    if (mxcsr & 0x0100) fpcr |= 0x8000;    /* denormal mask */
-    if (mxcsr & 0x0200) fpcr |= 0x0200;    /* zero-divide mask */
-    if (mxcsr & 0x0400) fpcr |= 0x0400;    /* overflow mask */
-    if (mxcsr & 0x0800) fpcr |= 0x0800;    /* underflow mask */
-    if (mxcsr & 0x1000) fpcr |= 0x1000;    /* precision mask */
-    if (mxcsr & 0x2000) fpcr |= 0x800000;  /* round down */
-    if (mxcsr & 0x4000) fpcr |= 0x400000;  /* round up */
-    if (mxcsr & 0x8000) fpcr |= 0x1000000; /* flush to zero */
+    if (mxcsr & 0x0040)    fpcr |= 0x80000;   /* denormals are zero */
+    if (!(mxcsr & 0x0080)) fpcr |= 0x0100;    /* invalid operation mask */
+    if (!(mxcsr & 0x0100)) fpcr |= 0x8000;    /* denormal mask */
+    if (!(mxcsr & 0x0200)) fpcr |= 0x0200;    /* zero-divide mask */
+    if (!(mxcsr & 0x0400)) fpcr |= 0x0400;    /* overflow mask */
+    if (!(mxcsr & 0x0800)) fpcr |= 0x0800;    /* underflow mask */
+    if (!(mxcsr & 0x1000)) fpcr |= 0x1000;    /* precision mask */
+    if (mxcsr & 0x2000)    fpcr |= 0x800000;  /* round down */
+    if (mxcsr & 0x4000)    fpcr |= 0x400000;  /* round up */
+    if (mxcsr & 0x8000)    fpcr |= 0x1000000; /* flush to zero */
     return fpcr | ((UINT64)fpsr << 32);
 }
 
@@ -107,16 +107,16 @@ static inline UINT fpcsr_to_mxcsr( UINT fpcr, UINT fpsr )
     if (fpsr & 0x0010) ret |= 0x0020;      /* precision */
     if (fpsr & 0x0080) ret |= 0x0002;      /* denormal */
 
-    if (fpcr & 0x0000001) ret |= 0x0040;   /* denormals are zero */
-    if (fpcr & 0x0000100) ret |= 0x0080;   /* invalid operation mask */
-    if (fpcr & 0x0000200) ret |= 0x0200;   /* zero-divide mask */
-    if (fpcr & 0x0000400) ret |= 0x0400;   /* overflow mask */
-    if (fpcr & 0x0000800) ret |= 0x0800;   /* underflow mask */
-    if (fpcr & 0x0001000) ret |= 0x1000;   /* precision mask */
-    if (fpcr & 0x0008000) ret |= 0x0100;   /* denormal mask */
-    if (fpcr & 0x0400000) ret |= 0x4000;   /* round up */
-    if (fpcr & 0x0800000) ret |= 0x2000;   /* round down */
-    if (fpcr & 0x1000000) ret |= 0x8000;   /* flush to zero */
+    if (fpcr & 0x0080000)    ret |= 0x0040;   /* denormals are zero */
+    if (!(fpcr & 0x0000100)) ret |= 0x0080;   /* invalid operation mask */
+    if (!(fpcr & 0x0000200)) ret |= 0x0200;   /* zero-divide mask */
+    if (!(fpcr & 0x0000400)) ret |= 0x0400;   /* overflow mask */
+    if (!(fpcr & 0x0000800)) ret |= 0x0800;   /* underflow mask */
+    if (!(fpcr & 0x0001000)) ret |= 0x1000;   /* precision mask */
+    if (!(fpcr & 0x0008000)) ret |= 0x0100;   /* denormal mask */
+    if (fpcr & 0x0400000)    ret |= 0x4000;   /* round up */
+    if (fpcr & 0x0800000)    ret |= 0x2000;   /* round down */
+    if (fpcr & 0x1000000)    ret |= 0x8000;   /* flush to zero */
     return ret;
 }