Hi, JamVM uses its own optimised routines for handling the calling convention on ARM (os/linux/arm/callNative.S). This was written back in 2003. From browsing, it appears that a new ARM calling convention is gainining ground called EABI (E for embedded). This is substantially different, and requires the stack and doubleword quantities to be 8-byte aligned (stacked, and within even-numbered registers). I haven't been able to find a definate answer whether the gumstix is configured to use EABI. Assuming your ARM cross-compiler is called arm-linux-gcc, do: arm-linux-gcc -E -dM - < /dev/null This will show all the predefined macros. If it's configured to use EABI, there should be __ARM_EABI__ somewhere in that. If it is, you will have to use libffi. This library provides a standard generic way for handling calling conventions. It can be used with JamVM by adding --enable-ffi to the configure line. This will configure JamVM to use libffi instead of its own routines. Most other VMs rely on libffi for calling native methods so JamVM wouldn't be odd in requiring it. JamVM, however, provided its own routines as an optimisation. Depending on how much time I have over the next week I will investigate writing a new set of routines to handle EABI. Rob. On 8/18/07, robert@xxxxxxxxxxxxxx <robert@xxxxxxxxxxxxxx> wrote: > Quoting Audrius Meskauskas <audriusa@xxxxxxxxxx>: > > > Adam Smola wrote: > > > > # java gnu.classpath.tools.giop.NameService > > > > > > Error: > > > > > > Please use --help for options. > > > Alignment trap: not handling instruction ececa102 at [<4008bde8>] > > > Unhandled fault: alignment exception (0x813) at 0xbea8bff4 > > > > That is not a java error. Java code would print the stack trace on > > failure. This seems a native code problem. > > Some ideas for the original poster. > (1) execute jamvm with -verbose option (might be able to > see what jamvm is trying to do when error occurs) > (2) recompile jamvm with debug options in jamvm.mk, > in particular there is an option --debug-dll iirc. > (3) build strace and run jamvm within strace > (extremely verbose output, might give some useful info > at the point of failure) > > HTH > > Robert Dodier > >
