COG VM and Locale

I am still willing to get Locale working with the combination of COG VM
and Pharo. especially to make a version of DrGeo for the XO laptop where
the CPU is subminimal, it brings a big usability improvement for the kids.
But so far, the locale plugin does not work, any clue?

Hilaire

On Wed, Mar 2, 2011 at 8:21 AM, Hilaire Fernandes <[hidden email]> wrote:

I am still willing to get Locale working with the combination of COG VM
and Pharo. especially to make a version of DrGeo for the XO laptop where
the CPU is subminimal, it brings a big usability improvement for the kids.
But so far, the locale plugin does not work, any clue?

Run under gdb.  

Things to check: there could be an unresolved reference which causes it to fail to load.  See "Testing an external plugin has completely linked" in http://www.squeakvm.org/svn/squeak/branches/Cog/unixbuild/HowToBuild.  If it loads, put a breakpoint in initialiseModule and step through it. Building a debug VM can help in debugging (again see HowToBuild)

Hilaire

Le 02/03/2011 18:23, Eliot Miranda a écrit :

> Run under gdb.  Things to check: there could be an unresolved reference
> which causes it to fail to load.  See "Testing an external plugin has
> completely linked" in
> http://www.squeakvm.org/svn/squeak/branches/Cog/unixbuild/HowToBuild.
>  If it loads, put a breakpoint in initialiseModule and step through it.
> Building a debug VM can help in debugging (again see HowToBuild)

Not sure I got it right, but I have unreferenced symbols warning
following the step above:

bash-3.2# /bin/sh /home/olpc/COG/unixbuild/bld/libtool --mode=link gcc
-Wl,--warn-unresolved-symbols -Wl,--no-allow-shlib-undefined -g -O2
-D_GNU_SOURCE -DNDEBUG -DITIMER_HEARTBEAT=1 -DNO_VM_PROFILE=1
-DCOGMTVM=0 -DDEBUGVM=0 -msse -DLSB_FIRST=1    -avoid-version -module
-rpath /usr/local/lib/squeak/3.9-7 -o LocalePlugin.la LocalePlugin.lo
sqUnixLocale.lo
rm -fr .libs/LocalePlugin.la .libs/LocalePlugin.* .libs/LocalePlugin.*
gcc -shared  LocalePlugin.lo sqUnixLocale.lo
-Wl,--warn-unresolved-symbols -Wl,--no-allow-shlib-undefined -Wl,-soname
-Wl,LocalePlugin -o .libs/LocalePlugin
/lib/libc.so.6: warning: undefined reference to `__libc_stack_end@GLIBC_2.1'
/lib/libc.so.6: warning: undefined reference to `_dl_argv@GLIBC_PRIVATE'
/lib/libc.so.6: warning: undefined reference to
`_rtld_global_ro@GLIBC_PRIVATE'
/lib/libc.so.6: warning: undefined reference to `___tls_get_addr@GLIBC_2.3'
/lib/libc.so.6: warning: undefined reference to `_rtld_global@GLIBC_PRIVATE'
/lib/libc.so.6: warning: undefined reference to
`__libc_enable_secure@GLIBC_PRIVATE'
creating LocalePlugin.la
(cd .libs && rm -f LocalePlugin.la && ln -s ../LocalePlugin.la
LocalePlugin.la)

Le 03/03/2011 20:57, Hilaire Fernandes a écrit :

> Le 02/03/2011 18:23, Eliot Miranda a écrit :
>> /branches/Cog/unixbuild/HowToBuild
>> <http://www.squeakvm.org/svn/squeak/branches/Cog/unixbuild/HowToBuild>.
>>  If it loads, put a breakpoint in initialiseModule and step through it.

Okay, strangely setting a break point to initialiseModule, put it on
SurfacePlugin

(gdb) break initialiseModule
Breakpoint 1 at 0x811acc8: file
/home/hilaire/Travaux/pharo/temp/COG/platforms/Cross/plugins/SurfacePlugin/SurfacePlugin.c,
line 204.


I have to start the VM then quit, then adding again a break point on
initialiseModule set it to locale:

Program exited normally.
(gdb) break initialiseModule
Breakpoint 5 at 0x559542: file
/home/hilaire/Travaux/pharo/temp/COG/src/plugins/LocalePlugin/LocalePlugin.c,
line 112.


step throught the function is:

(gdb) r
Starting program:
/home/hilaire/Travaux/pharo/temp/COG/target/lib/squeak/3.9-7/squeak
drgeo.image
[Thread debugging using libthread_db enabled]
[New Thread 0x77f88b70 (LWP 27787)]

Breakpoint 5, initialiseModule () at
/home/hilaire/Travaux/pharo/temp/COG/src/plugins/LocalePlugin/LocalePlugin.c:112
112             return sqLocInitialize();
(gdb) s
heartbeat_handler (sig=14, sig_info=0x33, context=0x0) at
/home/hilaire/Travaux/pharo/temp/COG/platforms/unix/vm/sqUnixHeartbeat.c:475
475     {
(gdb) s
476             if (!ioOSThreadsEqual(ioCurrentOSThread(),getVMOSThread())) {
(gdb) s

Program received signal SIGTRAP, Trace/breakpoint trap.
0x0013cdc6 in pthread_self () from /lib/tls/i686/cmov/libpthread.so.0

Hilaire


--
Education 0.2 -- http://blog.ofset.org/hilaire