Can anybody help me with this porting problem?

Tue Aug 7 03:05:05 PDT 2007

I am now porting JVM6 to mips archtecture, But meet a big problem . I
have already spended 1 week on it, but still can not solve it.can
anybody do me a favor giving me some advices?

I currently use the JDK5 enviroment except "libjvm.so". when run
Java2Demo.jar of JDK5 demo with "-Xint" mode,It is quit regular, But
when run it with mixed mode, It happened a strange crash, this is the
error report:

#
# An unexpected error has been detected by Java Runtime Environment:
#
# SIGUSR1 (0xa) at pc=0x2bf8c718, pid=20197, tid=16384
#
# Java VM: Java HotSpot(TM) Client VM (1.6.0-rc-b104-debug mixed mode)
# Problematic frame:
# j
sun.reflect.GeneratedMethodAccessor1.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+0
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#

--------------- T H R E A D ---------------

Current thread (0x10020400): JavaThread "main" [_thread_in_Java, id=20197]

siginfo:si_signo=10, si_errno=0, si_code=128, si_addr=0x00000000

Registers:
i0=0x00000000, i1=0xfefeff1e, i2=0x10070354, i3=0x00000000
i4=0x10020ca8, i5=0x0000005a, i6=0x00000004, i7=0x10020400
i8=0x10020400, i9=0x00000007, i10=0xfefefefe, i11=0x32592268
i12=0x31fe0f38, i13=0x00000020, i14=0xfffffffe, i15=0x000000c0
i16=0x3259260d, i17=0x000053be, i18=0x2e034d70, i19=0x00000000
i20=0x00000000, i21=0x7efc46ac, i22=0x10020400, i23=0x7efc4654
i24=0x7efc4658, i25=0x2b18eae0, i26=0x2aac4000, i27=0x00000000
i28=0x2b909250, i29=0x7efc4624, i30=0x7efc4644, i31=0x2bf3cbfc

Top of Stack: (sp=0x7efc4624)
0x7efc4604: 2ac2a968 2ab0be88 2ad69530 2b909250
0x7efc4614: 00000000 10020ce8 10020400 31fb5c70
0x7efc4624: 7efc4624 32592600 32592850 00000000
0x7efc4634: 32592648 7efc4654 00000000 7efc464c
0x7efc4644: 7efc4678 2bf3cbfc 2e042080 10070354
0x7efc4654: 2e037878 7efc4658 32412576 32412830
0x7efc4664: 00000000 32412588 7efc4688 7efc464c
0x7efc4674: 7efc4680 7efc46ac 2bf416cc 2e042080
0x7efc4684: 10070354 2e0338d8 7efc468c 31ff0bbf
0x7efc4694: 32023648 00000000 31ff0be0 7efc46c4

Instructions: (pc=0x2bf8c718)
0x2bf8c708: 04 00 4a 8c 10 00 8d 8d 20 08 4d 01 00 00 2e 8c
0x2bf8c718: 17 00 cc 11 00 00 00 00 14 00 0e 24 10 00 cd 15

Stack: [0x7ef78000,0x7efc8000), sp=0x7efc4624, free space=305k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code,
C=native code)
j
sun.reflect.GeneratedMethodAccessor1.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+0
j
sun.reflect.DelegatingMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+6
j
java.lang.reflect.Method.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+111
j
java.nio.channels.spi.AbstractInterruptibleChannel.blockedOn(Lsun/nio/ch/Interruptible;)V+23
j java.nio.channels.spi.AbstractInterruptibleChannel.end(Z)V+1
j sun.nio.ch.FileChannelImpl.position(J)Ljava/nio/channels/FileChannel;+164
j sun.font.TrueTypeFont.readBlock(Ljava/nio/ByteBuffer;II)I+76
v ~StubRoutines::call_stub
V [libjvm.so+0x437fe0]
C 0x7efc4a80

--------------- P R O C E S S ---------------

Java Threads: ( => current thread )
0x101a7400 JavaThread "AWT-Shutdown" [_thread_blocked, id=20212]
0x10629c00 JavaThread "AWT-XAWT" daemon [_thread_in_native, id=20211]
0x10602c00 JavaThread "Java2D Disposer" daemon [_thread_blocked, id=20208]
0x10089400 JavaThread "Low Memory Detector" daemon [_thread_blocked,
id=20204]
0x10087000 JavaThread "CompilerThread0" daemon [_thread_blocked, id=20203]
0x10085400 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=20202]
0x10072000 JavaThread "Finalizer" daemon [_thread_blocked, id=20201]
0x10070c00 JavaThread "Reference Handler" daemon [_thread_blocked, id=20200]
=>0x10020400 JavaThread "main" [_thread_in_Java, id=20197]

Other Threads:
0x10063c00 VMThread [id=20199]
0x100ae400 WatcherThread [id=20207]

VM state:not at safepoint (normal execution)

VM Mutex/Monitor currently owned by a thread: None

Heap
def new generation total 960K, used 652K [0x2dfb0000, 0x2e0b0000,
0x2e490000)
eden space 896K, 65% used [0x2dfb0000, 0x2e0430f8, 0x2e090000)
from space 64K, 100% used [0x2e0a0000, 0x2e0b0000, 0x2e0b0000)
to space 64K, 0% used [0x2e090000, 0x2e090000, 0x2e0a0000)
tenured generation total 4096K, used 203K [0x2e490000, 0x2e890000,
0x31fb0000)
the space 4096K, 4% used [0x2e490000, 0x2e4c2c80, 0x2e4c2e00, 0x2e890000)
compacting perm gen total 12288K, used 6098K [0x31fb0000, 0x32bb0000,
0x35fb0000)
the space 12288K, 49% used [0x31fb0000, 0x325a4a18, 0x325a4c00, 0x32bb0000)
No shared spaces configured.

VM Arguments:
jvm_args: -XX:+PrintCompilation
java_command: Java2Demo.jar
Launcher Type: generic

Environment Variables:
JAVA_HOME=/usr/lib/jvm/sun-java
CLASSPATH=.:/usr/lib/jvm/sun-java/lib
PATH=/usr/lib/jvm/sun-java/bin:/usr/local/bin:/usr/sbin:/bin:/sbin:/usr/bin/X11:/usr/bin
USERNAME=loongson
LD_LIBRARY_PATH=/usr/lib/jvm/sun-java/lib/mips32/client:/usr/lib/jvm/sun-java/lib/mips32:/usr/lib/jvm/sun-java/../lib/mips32
SHELL=/bin/bash
DISPLAY=:0.0

Signal Handlers:
SIGSEGV: [libjvm.so+0x9ebf60], sa_mask[0]=0xffbffeff, sa_flags=0x10000008
SIGUSR1: [libjvm.so+0x9ebf60], sa_mask[0]=0xffbffeff, sa_flags=0x10000008
SIGFPE: [libjvm.so+0x7e2b5c], sa_mask[0]=0xffbffeff, sa_flags=0x10000008
SIGPIPE: [libjvm.so+0x7e2b5c], sa_mask[0]=0xffbffeff, sa_flags=0x10000008
SIGILL: [libjvm.so+0x7e2b5c], sa_mask[0]=0xffbffeff, sa_flags=0x10000008
SIGSTKFLT: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000
SIGCHLD: [libjvm.so+0x7ea1c0], sa_mask[0]=0x80000000, sa_flags=0x10000008
SIGHUP: [libjvm.so+0x7e40d4], sa_mask[0]=0xffbffeff, sa_flags=0x10000008
SIGINT: [libjvm.so+0x7e40d4], sa_mask[0]=0xffbffeff, sa_flags=0x10000008
SIGQUIT: [libjvm.so+0x7e40d4], sa_mask[0]=0xffbffeff, sa_flags=0x10000008
SIGTERM: [libjvm.so+0x7e40d4], sa_mask[0]=0xffbffeff, sa_flags=0x10000008
SIGCHLD: [libjvm.so+0x7ea1c0], sa_mask[0]=0x80000000, sa_flags=0x10000008

--------------- S Y S T E M ---------------

OS:4.0

uname:Linux 2.6.18.1lemote64 #15 Tue Mar 6 08:51:02 CST 2007 mips64
libc:glibc 2.3.6 linuxthreads-0.10 (fixed stack)
rlimit: STACK 2032k, CORE 0k, NPROC infinity, NOFILE 1024, AS infinity
load average:0.98 0.82 0.60

CPU:total 1 , has_16k_page

Memory: 16k page, physical 514768k(8896k free), swap 977888k(958704k free)

vm_info: Java HotSpot(TM) Client VM (1.6.0-rc-b104) for linux-mips,
built on Aug 7 2007 17:23:13 by "root" with gcc 4.1.2 20061028
(prerelease) (Debian 4.1.1-19)

when Run it in gdb, it stop at "invokevirtual_helper" at
"templateTable_mips.cpp", the "oopDesc::klass_offset_in_bytes()"of recv
is "0xfefefefe", which is sure error, the recv is assigned in
"prepare_invoke"
as follow:
if (load_receiver) {
__ andi(AT, flags, 0xff);
__ shl(AT, Interpreter::stackElementScale());
__ add(AT, SP, AT);
__ lw(recv, AT, - Interpreter::expr_offset_in_bytes(1));
__ verify_oop(recv);
}
the value of recv is the return value of "currentThread"function, which
was compiled and excuted through i2c adapt just now.the return vaule of
"currentThread" is normal as before,So I think the SP is wrong , but SP
did not
change during invoking "currentThread".So I am confused.do any body get
some advices?

the funtions compiled before crash is as follows:

1 java.lang.String::equals (89 bytes)
2 ! sun.nio.cs.UTF_8$Encoder::encodeArrayLoop (698 bytes)
3 java.lang.String::hashCode (60 bytes)
4 java.lang.String::charAt (33 bytes)
5 java.lang.String::lastIndexOf (156 bytes)
6 java.lang.Math::max (11 bytes)
7 java.lang.String::indexOf (151 bytes)
8 java.util.jar.JarFile::hasClassPathAttribute (197 bytes)
9 java.io.UnixFileSystem::normalize (75 bytes)
10 java.lang.Object::<init> (1 bytes)
11 sun.reflect.ClassFileAssembler::emitByte (11 bytes)
12 sun.reflect.ByteVectorImpl::add (38 bytes)
13 java.util.Properties$LineReader::readLine (383 bytes)
--- n java.lang.System::arraycopy (static)

14 ! sun.nio.cs.UTF_8$Decoder::decodeArrayLoop (1814 bytes)
15 java.lang.AbstractStringBuilder::append (40 bytes)
16 java.lang.String::indexOf (166 bytes)
17 java.io.StreamTokenizer::read (38 bytes)
18 ! java.io.BufferedReader::read (104 bytes)
19 java.io.BufferedReader::ensureOpen (18 bytes)
20 java.io.StreamTokenizer::nextToken (1295 bytes)
21 java.lang.Character::charCount (12 bytes)
22 java.lang.String::codePointAt (44 bytes)
23 java.lang.Character::codePointAtImpl (41 bytes)
24 java.lang.Character::isHighSurrogate (18 bytes)
25 java.lang.CharacterDataLatin1::getProperties (11 bytes)
26 java.lang.String::toLowerCase (322 bytes)
27 java.lang.Character::toLowerCase (162 bytes)
28 java.lang.CharacterDataLatin1::toLowerCase (36 bytes)
29 java.nio.Buffer::position (43 bytes)
30 java.lang.String::startsWith (78 bytes)
31 java.util.Properties::loadConvert (505 bytes)
32 java.util.HashMap::indexFor (6 bytes)
33 java.util.HashMap::maskNull (12 bytes)
34 java.util.HashMap::hash (36 bytes)
35 sun.awt.X11GraphicsEnvironment::specificFontIDForName (140 bytes)
36 java.util.HashMap::put (113 bytes)
37 java.lang.String::getChars (66 bytes)
38 java.lang.AbstractStringBuilder::append (60 bytes)
39 s java.util.Hashtable::put (167 bytes)
40 java.util.HashMap$Entry::<init> (26 bytes)
41 java.util.HashMap::transfer (83 bytes)
42 java.util.HashMap::get (74 bytes)
43 java.util.HashMap::addEntry (58 bytes)
44 java.util.Hashtable::rehash (122 bytes)
45 javax.swing.UIDefaults::putDefaults (58 bytes)
46 java.lang.String::replace (142 bytes)
47 java.util.HashMap$HashIterator::nextEntry (96 bytes)
48 java.lang.StringBuilder::append (8 bytes)
49 s java.util.Hashtable::get (69 bytes)
50 java.util.Arrays::mergeSort (235 bytes)
51 sun.java2d.loops.GraphicsPrimitiveMgr$1::compare (39 bytes)
52 java.util.Arrays::binarySearch (87 bytes)
53 sun.java2d.loops.GraphicsPrimitiveMgr$2::compare (39 bytes)
54 java.lang.Class::searchFields (45 bytes)
55 java.lang.String::<init> (20 bytes)
56 java.lang.Class::searchMethods (90 bytes)
57 sun.reflect.ClassFileAssembler::emitConstantPoolUTF8 (50 bytes)
58 ! sun.reflect.UTF8::encode (189 bytes)
59 sun.reflect.UTF8::utf8Length (81 bytes)
60 java.nio.HeapByteBuffer::_get (7 bytes)
61 java.nio.Buffer::nextGetIndex (31 bytes)
62 java.nio.Bits::getCharB (18 bytes)
63 java.nio.Bits::makeChar (12 bytes)
64 java.nio.ByteBufferAsCharBufferB::get (16 bytes)
65 java.nio.ByteBufferAsCharBufferB::ix (9 bytes)
--- n java.lang.Thread::currentThread (static)