Stefano Bonifazi writes: > Hi! > Thank you for answering me!
>> If I understand this correctly, the execution of one of your PPC cores >> is oblivious of the others (they share no guest physical memory). >> > No! They do share the same address space.. the way I am loading the different > qemu-ppc instances divides their namespaces allowing them to coexist, but they > share the same address space anyway (that is the same of the caller process > too), that is what I want for a communication. Sure, but each core runs a separate (guest) process. It's not that they are (guest) threads of the same (guest) application. > The problem is that they are at the same time oblivious of the others and each > of them wants to map its target binary at the same unique virtual address > (again > see my last post about relocating target code).. Right. The important point here is that each qemu core runs a separate (guest) process. > I tried successfully the way of IPC (interprocess communication) having a > different qemu-ppc spawned by systemc as a process, then using shared memory > and > signals for communicating.. pretty easy and well working, but the specs of my > project (university) do not let me using IPC.. That sounds silly, but there's no way out if this is in the rules of the project. >> [1] http://sites.google.com/site/hplabscotson/ > Thank you, I am a student of digital electronics, with not big knowledge about > developing in linux but this project is very interesting for my field.. some > sort of alternative to systemc if I understand fine! Thanks surely I'll have a > look at that! Well, if you don't know about avilable simulators, there's a plethora of them. From the top of my head, I can give you these other names: * SESC http://sesc.sourceforge.net/ * M5 http://www.m5sim.org/wiki/index.php/Main_Page * GEMS http://www.cs.wisc.edu/gems/ * SimpleScalar http://www.simplescalar.com/ * Graphite http://groups.csail.mit.edu/carbon/?page_id=111 Lluis -- "And it's much the same thing with knowledge, for whenever you learn something new, the whole world becomes that much richer." -- The Princess of Pure Reason, as told by Norton Juster in The Phantom Tollbooth