On Tue, Dec 29, 2009 at 04:09:17PM +0100, Stefan Weil wrote: > Test environment: > > * ppc-softmmu/qemu-system-ppc running on x86_64 host > * emulated ppc is running debian lenny > > > > While debugging on the emulated ppc (each time when > a shared library is loaded after "r" command?), > qemu-system-ppc prints this error message: > > invalid/unsupported opcode: 00 - 00 - 00 (00000000) 4800fa44 1 >
I have fixed that in HEAD by stopping the translation just after a trap, as the instructions might never be executed. It is not a full fix, as the OS can actually use any instruction that always generate a trap (even a memory access) as an instruction barrier to make sure the following instructions are never executed. This actually affects all targets, but is unlikely to happen. One solution for that would be to only generate an exception for an unsupported instruction when it is the first instruction of a TB, and otherwise just end the translation before this instruction. -- Aurelien Jarno GPG: 1024D/F1BCDB73 aurel...@aurel32.net http://www.aurel32.net
