Message: 3 Date: Sun, 08 May 2011 21:41:15 +0200 From: Llu?s <xscr...@gmx.net> To: qemu-devel@nongnu.org Subject: Re: [Qemu-devel] Binary translation (of code) Message-ID: <87ei49ugis....@ginnungagap.bsc.es> Content-Type: text/plain; charset=utf-8
Tarmo Pikaro writes: > Hi ! >> > I think self-modifying?code is kinda rare case - it's made typically for >> > protection againt?hackers , and?typically on pc side. Nintendo?roms probably >> > don't use this kind of >> > protection. >> >> It doesn't have to be protection, for example GCC generates >> trampolines to stack when using nested functions. > Ok, so apparently we will have some challenges on the way. > I guess some sort of mutation - qemu + recompiler could be done as well... > It would be much easier to ship an executable containing both the guest > application and qemu, so that executing it starts qemu with a > pre-defined configuration and runs the guest binary. - Binary recompilation would allow faster execution than emulated code - qemu constantly changes (based on amount of patches provided in this mail list) - in order to keep image+qemu working - simplest way is to convert into executable. Btw - qemu could be used as a bootstrap to image as well. :-) - And finally modular "emulation" - it would be possible to recompile individual .dll to another os. Side effects would be: - More difficult to debug - since mapping to original binary image should be somehow maintained - if register dump helps anyhow the developer. -- Have a nice day! Tarmo.
