Alexandre Julliard : winex11: Mask FPU exceptions around fontconfig calls.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 171183c77b2ac7c808d5090f7c46a71b7d033eb1
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=171183c77b2ac7c808d5090f7c46a71b7d033eb1

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Fri Oct 28 12:41:14 2011 +0200

winex11: Mask FPU exceptions around fontconfig calls.

---

 dlls/winex11.drv/xrender.c |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletions(-)

diff --git a/dlls/winex11.drv/xrender.c b/dlls/winex11.drv/xrender.c
index 8ee3f59..3157d8c 100644
--- a/dlls/winex11.drv/xrender.c
+++ b/dlls/winex11.drv/xrender.c
@@ -952,11 +952,18 @@ static int GetCacheEntry( HDC hdc, LFANDSIZE *plfsz )
 #ifdef SONAME_LIBFONTCONFIG
         if (fontconfig_installed)
         {
-            FcPattern *match, *pattern = pFcPatternCreate();
+            FcPattern *match, *pattern;
             FcResult result;
             char family[LF_FACESIZE * 4];
 
+#if defined(__i386__) && defined(__GNUC__)
+            /* fontconfig generates floating point exceptions, mask them */
+            WORD cw, default_cw = 0x37f;
+            __asm__ __volatile__("fnstcw %0; fldcw %1" : "=m" (cw) : "m" (default_cw));
+#endif
+
             WideCharToMultiByte( CP_UTF8, 0, plfsz->lf.lfFaceName, -1, family, sizeof(family), NULL, NULL );
+            pattern = pFcPatternCreate();
             pFcPatternAddString( pattern, FC_FAMILY, (FcChar8 *)family );
             if (plfsz->lf.lfWeight != FW_DONTCARE)
             {
@@ -1007,6 +1014,10 @@ static int GetCacheEntry( HDC hdc, LFANDSIZE *plfsz )
                 pFcPatternDestroy( match );
             }
             pFcPatternDestroy( pattern );
+
+#if defined(__i386__) && defined(__GNUC__)
+            __asm__ __volatile__("fnclex; fldcw %0" : : "m" (cw));
+#endif
         }
 #endif  /* SONAME_LIBFONTCONFIG */