native jdk-15.2 on FreeBSD/amd64?

[Clarence Chu]

>There're some reported problems with EMT64 support which fixed
>in Sun closed distribution, but not made available yet to open source
>world.
>

could the em64t problem be fixed as follows?

---- jdk15.patches.orig  Thu Jan 20 04:47:28 2005
+++ jdk15.patches       Fri Apr 22 18:00:54 2005
@@ -13916,7 +13916,7 @@
diff -N hotspot/src/os_cpu/bsd_amd64/vm/prefetch_bsd_amd64.inline.hpp
--- hotspot/src/os_cpu/bsd_amd64/vm/prefetch_bsd_amd64.inline.hpp      1 Jan 
170 00:00:00 -0000
+++ hotspot/src/os_cpu/bsd_amd64/vm/prefetch_bsd_amd64.inline.hpp      23 
Dec
004 19:35:20 -0000      1.2
-@@ -0,0 +1,21 @@
+@@ -0,0 +1,24 @@
+/*
+ * $Id: prefetch_bsd_amd64.inline.hpp,v 1.2 2004/12/23 19:35:20 phantom Exp 
$
+ */
@@ -13935,8 +13935,11 @@
+  // Force prefetchw.  The gcc builtin produces prefetcht0 or prefetchw
+  // depending on command line switches we don't control here.
+  // Use of this method should be gated by VM_Version::has_prefetchw.
-+  __asm__ ("prefetchw (%0,%1,1)" : : "r" (loc), "r" (interval));
++  //__asm__ ("prefetchw (%0,%1,1)" : : "r" (loc), "r" (interval));
+  //  __builtin_prefetch((char*) loc + interval, 1); // 
prefetcht0/prefetchw
%rsi,%rdi,1)
++  // prefetcht0/prefetchw (%rsi,%rdi,1)
++  // Do not use the 3dnow prefetchw instruction.  It isn't supported on 
em64t
++  __asm__ ("prefetcht0 (%0,%1,1)" : : "r" (loc), "r" (interval));
+}
Index: hotspot/src/os_cpu/bsd_amd64/vm/runtime_bsd_amd64.cpp
===================================================================

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