I figured out the segfault when doing the final enabling of MMX for
x86_64. I missed a #define in osdsurface.h which was fairly important.
Here's the patch that enables MMX for x86_64. I noticed a HUGE
performance boost with the EPG.
Jay
Index: osdsurface.cpp
===================================================================
RCS file: /var/lib/mythcvs/mythtv/libs/libmythtv/osdsurface.cpp,v
retrieving revision 1.12
diff -u -r1.12 osdsurface.cpp
--- osdsurface.cpp 28 Apr 2005 01:29:59 -0000 1.12
+++ osdsurface.cpp 29 Apr 2005 04:42:33 -0000
@@ -189,8 +169,8 @@
blendcolorfunc = &blendcolor;
blendconstfunc = &blendconst;
/* these do not yet work on x86_64, which does not define i386 */
-#if defined(i386) && defined(MMX)
usemmx = (mm_support() & MM_MMX);
+#if defined(MMX)
if (usemmx)
{
rec_lut[0] = 0;
Index: osdsurface.h
===================================================================
RCS file: /var/lib/mythcvs/mythtv/libs/libmythtv/osdsurface.h,v
retrieving revision 1.5
diff -u -r1.5 osdsurface.h
--- osdsurface.h 20 Apr 2005 17:02:22 -0000 1.5
+++ osdsurface.h 29 Apr 2005 04:44:22 -0000
@@ -53,7 +53,7 @@
QRegion usedRegions;
-#ifdef i386
+#ifdef MMX
short int rec_lut[256];
#else
short int * rec_lut;
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