Date: Sun, 23 Jan 2005 12:02:12 +0800 (CST) From: huang wen hui <huanghwh@yahoo.com> To: Alexey Zelkin <phantom@FreeBSD.org.ua> Cc: java@freebsd.org Subject: Fixed: Re: amd64 and Intel processors problem (was: Re: jdk15 fail compile under amd64) Message-ID: <20050123040212.71599.qmail@web51802.mail.yahoo.com> In-Reply-To: <20050121101652.GA93319@phantom.cris.net>
next in thread | previous in thread | raw e-mail | index | archive | help
--- Alexey Zelkin <phantom@FreeBSD.org.ua> 的正文： > hi, > > Thank you for posting of your dmesg and backtraces. > They described > a problem. > > Unfortunatelly, JVM building/built for amd64, > expects to be running > at real amd64 hardware. And in your case, you're > using Intel hardware > running in amd64 emulation mode (as far as I > understand). > > At this point -- it's impossible to use such > combination, sorry. ok, from search web, the problem is Intel EM64T does not suport 3DNow: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5095421 http://www.blackdown.org/java-linux/java-linux@java.blackdown.org/java-linux-msg00159.html and from jdk16,this problem can be fixed: --- ../../hotspot/src/os_cpu/bsd_amd64/vm/prefetch_bsd_amd64.inline.hpp~ Fri Jan 21 12:10:42 2005 +++ ../../hotspot/src/os_cpu/bsd_amd64/vm/prefetch_bsd_amd64.inline.hpp Sun Jan 23 09:37:34 2005 @@ -16,6 +16,10 @@ // 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) + // Do not use the 3dnow prefetchw instruction. It isn't supported on em64t. + // __asm__ ("prefetchw (%0,%1,1)" : : "r" (loc), "r" (interval)); + __asm__ ("prefetcht0 (%0,%1,1)" : : "r" (loc), "r" (interval)); + } Now, I can use JDK1.5 on my PE1850:) --hwh _________________________________________________________ Do You Yahoo!? 嫌邮箱太小？雅虎电邮自助扩容！ http://cn.rd.yahoo.com/mail_cn/tag/10m/*http://cn.mail.yahoo.com/event/10m.html
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20050123040212.71599.qmail>