On 12/05/2015 17:32, Peter Maydell wrote: > In order for -icount to work, it's important for the target > translate.c code to correctly bracket any generated code which > can "do I/O" with gen_io_start()/gen_io_end() calls. But > does anybody know exactly what the criteria are here for this? > It would be nice if we could document this in a comment in > gen_icount.h -- I'm happy to write one up if somebody will just > tell me what the right answer is :-)
It's any instruction that can cause an icount read, typically through QEMU_CLOCK_VIRTUAL or cpu_get_ticks(). Paolo
