Re: [Sablevm-developer] native libs

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Just to let you know that I have the same problem with version 1.0.5 on
x86.

David

On Mon, Jan 20, 2003 at 04:49:30PM -0500, David Paul BELANGER wrote:
>=20
> I have the same problem on both Debian/PPC and Debian/x86.  However, th=
e
> x86 version is the older 1.0.1 version installed in the sable lab.  The=
 PPC version is based on 1.0.5 with my PPC patch.  I will try on 1.0.5 on=
 x86 tonight.
>=20
>=20
> David
>=20
> On Mon, Jan 20, 2003 at 04:21:01PM -0500, Prof. Etienne M. Gagnon wrote=
:
> > OK.  I'm back!  :-)
> >=20
> > I'll look at this tomorrow.  You're on Debian/x86, right?
> >=20
> > Etienne
> >=20
> > David Paul BELANGER wrote:
> > >Hi,
> > >
> > >I'm getting a segmentation fault when trying to load a native librar=
y.
> > >The system native library (libjava-lang, libjava-io) get properly lo=
aded
> > >but when it comes to mine, it seems that the pointer passed to the
> > >memory allocator is null.  My library seems to get properly loaded (=
the
> > >handle is non-null).
> > >
> > >I have included some gdb output and a simple Hello program that caus=
e
> > >the error.
> > >
> > >Thanks,
> > >David
> > >
> > >
> > >---
> > >
> > >David B=E9langer
> > >Graduate Student
> > >School of Computer Science
> > >McGill University
> > >Office: MC226
> > >
> > >Web page:   http://www.cs.mcgill.ca/~dbelan2/
> > >Public key: http://www.cs.mcgill.ca/~dbelan2/public_key.txt
> > >
> > >
> > >
> > >--------------------------------------------------------------------=
----
> > >
> > >Program received signal SIGSEGV, Segmentation fault.
> > >[Switching to Thread 1024 (LWP 10068)]
> > >0x40029cbe in _svmf_cl_alloc (env=3D0x804d548, class_loader_info=3D0=
x80636b8,=20
> > >    size=3D12, ptr=3D0x0) at class_loader_memory_manager.c:139
> > >139     class_loader_memory_manager.c: No such file or directory.
> > >        in class_loader_memory_manager.c
> > >(gdb) backtrace
> > >#0  0x40029cbe in _svmf_cl_alloc (env=3D0x804d548,=20
> > >class_loader_info=3D0x80636b8, size=3D12, ptr=3D0x0) at=20
> > >    class_loader_memory_manager.c:139
> > >#1  0x40029dd4 in _svmf_cl_zalloc (env=3D0x804d548,=20
> > >class_loader_info=3D0x80636b8, size=3D12, ptr=3D0x0) at=20
> > >    class_loader_memory_manager.c:181
> > >#2  0x4002aab2 in _svmh_cl_zalloc_native_library (env=3D0x804d548,=20
> > >    class_loader_info=3D0x80636b8, ptr=3D0x0) at cl_alloc.c:585
> > >#3  0x400890ea in Java_java_lang_Runtime_nativeLoad (_env=3D0x804d54=
8,=20
> > >    this=3D0x8060028, _filename=3D0x8060610) at java_lang_Runtime.c:=
246
> > >#4  0x400df6ff in ffi_call_SYSV () from /usr/lib/libffi.so.2
> > >#5  0x400df41a in ffi_call () from /usr/lib/libffi.so.2
> > >#6  0x400334f8 in _svmf_invoke_native_nonstatic (env=3D0x804d548) at=
=20
> > >native.c:1171
> > >#7  0x40071b53 in _svmf_interpreter (_env=3D0x804d548)
> > >    at instructions_switch.c:9839
> > >#8  0x40027270 in _svmh_invoke_specific_static_clinit (env=3D0x804d5=
48,=20
> > >    method=3D0x4145046c) at method_invoke.c:5061
> > >#9  0x40088c9e in Java_java_lang_Class_step8 (_env=3D0x804d548,=20
> > >_class=3D0x805fd98, vmData=3D0x80607a0) at java_lang_Class.c:741
> > >#10 0x400df6ff in ffi_call_SYSV () from /usr/lib/libffi.so.2
> > >#11 0x400df41a in ffi_call () from /usr/lib/libffi.so.2
> > >#12 0x40032bf8 in _svmf_invoke_native_static (env=3D0x804d548) at=20
> > >native.c:834
> > >#13 0x40071aa4 in _svmf_interpreter (_env=3D0x804d548)
> > >    at instructions_switch.c:9791
> > >#14 0x4001fbaa in _svmh_invoke_nonvirtual_jlclass_initialize=20
> > >(env=3D0x804d548, this=3D0x8065b08, param_1=3D1) at method_invoke.c:=
352
> > >#15 0x4003dcaa in _svmf_class_initialization (env=3D0x804d548,=20
> > >class=3D0x41450008)
> > >    at initialization.c:24
> > >#16 0x4008c6d5 in Java_java_lang_VirtualMachine_invokeMain=20
> > >(_env=3D0x804d548, _class=3D0x805fda8, mainClass=3D0x805fdb8, args=3D=
0x805fdc8)
> > >    at java_lang_VirtualMachine.c:47
> > >#17 0x400df6ff in ffi_call_SYSV () from /usr/lib/libffi.so.2
> > >#18 0x400df41a in ffi_call () from /usr/lib/libffi.so.2
> > >#19 0x40032bf8 in _svmf_invoke_native_static (env=3D0x804d548) at=20
> > >native.c:834
> > >#20 0x40071aa4 in _svmf_interpreter (_env=3D0x804d548)
> > >    at instructions_switch.c:9791
> > >#21 0x40057a60 in CallStaticVoidMethod (_env=3D0x804d548, cls=3D0x80=
5f198,=20
> > >    methodID=3D0x41250818) at native_interface.c:14894
> > >#22 0x0804aa4d in main (argc=3D2, argv=3D0xbffff8e4) at sablevm.c:14=
34
> > >(gdb)=20
> > >
> > >
> > >--------------------------------------------------------------------=
----
> > >
> > >
> > >public class Hello {
> > >
> > >  static {
> > >    System.loadLibrary("hello");
> > >  }
> > >
> > >  private static native void printHello();
> > >
> > >
> > >  public static void main(String[] args) {
> > >    printHello();
> > >  }
> > >
> > >}
> > >
> > >
> > >--------------------------------------------------------------------=
----
> > >
> > >#include "Hello.h"
> > >
> > >#include <stdio.h>
> > >
> > >JNIEXPORT void JNICALL Java_Hello_printHello
> > >(JNIEnv *env, jclass c) {
> > >  printf("Hello!\n");
> > >}
> > >
> > >
> > >
> > >--------------------------------------------------------------------=
----
> > >
> > >/* DO NOT EDIT THIS FILE - it is machine generated */
> > >#include <jni.h>
> > >/* Header for class Hello */
> > >
> > >#ifndef _Included_Hello
> > >#define _Included_Hello
> > >#ifdef __cplusplus
> > >extern "C" {
> > >#endif
> > >/*
> > > * Class:     Hello
> > > * Method:    printHello
> > > * Signature: ()V
> > > */
> > >JNIEXPORT void JNICALL Java_Hello_printHello
> > >  (JNIEnv *, jclass);
> > >
> > >#ifdef __cplusplus
> > >}
> > >#endif
> > >#endif
> > >
> > >
> > >--------------------------------------------------------------------=
----
> > >
> > >all:
> > >	libtool gcc -c -g -o hello.lo -I../../../../include Hello.c
> > >	libtool gcc -o libhello.la -g hello.lo -rpath `pwd`
> > >	libtool install -c libhello.la `pwd`/libhello.la
> >=20
> > --=20
> > Etienne M. Gagnon, Ph.D.             http://www.info.uqam.ca/~egagnon=
/
> > SableVM:                                       http://www.sablevm.org=
/
> > SableCC:                                       http://www.sablecc.org=
/
> >=20
> >=20
> >=20
> > -------------------------------------------------------
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>=20
> --=20
>=20
> ---
>=20
> David B=E9langer
> Graduate Student
> School of Computer Science
> McGill University
> Office: MC226
>=20
> Web page:   http://www.cs.mcgill.ca/~dbelan2/
> Public key: http://www.cs.mcgill.ca/~dbelan2/public_key.txt

--=20

---

David B=E9langer
Graduate Student
School of Computer Science
McGill University
Office: MC226

Web page:   http://www.cs.mcgill.ca/~dbelan2/
Public key: http://www.cs.mcgill.ca/~dbelan2/public_key.txt