On 10 May 2011 22:27, laurent laffont <laurent.laffont@gmail.com> wrote:
So following Mariano's blog and pharocasts I've built Cog with IA32ABIPlugin (works, cool !) When starting the JVM following JNIPort instructions on SqueakSource wiki, the VM crashes. GDB bt gives: Program received signal EXC_BAD_ACCESS, Could not access memory. Reason: KERN_PROTECTION_FAILURE at address: 0x00000000 0x00000000 in ?? () (gdb) bt #0 Â 0x00000000 in ?? () #1 Â 0x000d267a in primCallOutIntegralReturn () at /Users/laurentlaffont/dev/pharo/vm/blessed/src/plugins/IA32ABI/IA32ABI.c:500 #2 Â 0x00023a3e in interpret () at /Users/laurentlaffont/dev/pharo/vm/blessed/src/vm/gcc3x-cointerpmt.c:2037 #3 Â 0x962ede02 in __CFRunLoopDoObservers () #4 Â 0x962a9d8d in __CFRunLoopRun () #5 Â 0x962a9464 in CFRunLoopRunSpecific () #6 Â 0x962a9291 in CFRunLoopRunInMode () #7 Â 0x934dce04 in RunCurrentEventLoopInMode () #8 Â 0x934dcaf5 in ReceiveNextEventCommon () #9 Â 0x934dca3e in BlockUntilNextEventMatchingListInMode () #10 0x9644778d in _DPSNextEvent () #11 0x96446fce in -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] () #12 0x96409247 in -[NSApplication run] () #13 0x964012d9 in NSApplicationMain () #14 0x00078247 in main (argc=1, argv=0xbffff680, envp=0xbffff688) at /Users/laurentlaffont/dev/pharo/vm/blessed/platforms/iOS/vm/Common/main.m:52 (gdb) Any idea ? Laurent.
A smalltalk stack trace would help. As usual, check what you passing to the foreign function. Is everything set up correctly? Because from the above i see that some piece of software accessing null pointer. And this is usually problem with proper initialization or missing error handling. -- Best regards, Igor Stasenko AKA sig.