On 13 June 2017 at 12:54, Antonio Groza <antoniogr...@gmail.com> wrote: > Hello, i am trying to emulate x86 on a platform that won't allow me to map > memory pages as RWX(Apple's iOS) and i was wondering if there was any way > of running qemu without doing that. I've had a brief look at your > documentation and it looks like you are transpiling between 2 different > instruction sets and i don't know how that would be possible without a rwx > page.
It's certainly possible in theory -- you'd just need to be more careful than we are currently about mapping the memory RW when writing or patching code and then R-X when executing. (Now we're multithreaded this is probably trickier than when we only had a single thread, though.) But we don't do it currently and it would require (possibly complicated) code changes to do it. thanks -- PMM