Hi Ali, That's what I'm looking for. Thank you very much.
Regards, Yinchong 2013/2/6 Ali Saidi <[email protected]> > ** > > Before the cpu starts executing the code in src/base/loader/* loads the > binary into memory (the instructions) and the code in > src/arch/**/process.cc builds up a stack frame as appropriate for the > architecture/OS that you're simulating. > > > > Ali > > On 05.02.2013 18:22, Tao Zhang wrote: > > Hi Yinchong, > > I am not quite sure the exact meaning of "memory initialization" you > mentioned (DRAM initialization steps? or Data initialization). If you care > about how data is accessed by the gem5, I may give you some clue. > > In SE mode, your host machine first allocates a large memory space for > your benchmark. The data is actually in this memory space. Gem5 remembers > the starting address so that it knows where the data should be read from or > written to your host machine. On the other hand, the virtual main memory > only behaves like a timing model but never stores the real data. As a > result, it seems the data has been initialized prior to the simulation. > > -Tao > > On 02/05/2013 01:06 PM, Yinchong Feng wrote: > > I think that it's Main Memory. > It shows like below： > > 0: 0: system.physmem: Write of size 4096 on address 0x0 > 0: system.physmem: 00000000 7f 45 4c 46 01 01 01 00 00 00 00 00 00 > 00 00 00 ELF > 0: system.physmem: 00000010 02 00 28 00 01 00 00 00 34 9c 00 00 34 > 00 00 00 ( 4 4 > 0: system.physmem: 00000020 f0 c2 09 00 02 00 00 05 34 00 20 00 08 > 00 28 00 pB 4 ( > 0: system.physmem: 00000030 14 00 12 00 06 00 00 00 34 00 00 00 34 > 80 00 00 4 4 > 0: system.physmem: 00000040 34 80 00 00 00 01 00 00 00 01 00 00 04 > 00 00 00 4 > 0: system.physmem: 00000050 04 00 00 00 04 00 00 00 38 01 00 00 38 > 81 00 00 8 8 > 0: system.physmem: 00000060 38 81 00 00 20 00 00 00 20 00 00 00 04 > 00 00 00 8 > 0: system.physmem: 00000070 04 00 00 00 07 00 00 00 d4 d6 07 00 d4 > d6 08 00 TV TV > > Do you have any idea? > > Thanks, > Yinchong > > > 2013/2/5 Tao Zhang <[email protected]> > >> do you mean cache or main memory? >> >> -Tao >> >> >> On 02/05/2013 11:46 AM, Yinchong Feng wrote: >> >> Hi All, >> >> I'm new at using gem5, and I'm trying to run benchmarks on gem5 in SE >> mode. I feel confused about the momory initialization in SE mode. When I >> ran the bianries with debug-flags MemoryAccess, MemDepUnit and MemTest, I >> saw that the memory was initialized before the real simulation starting. >> Could you please tell me where the data is from? >> >> Best regards, >> Yinchong >> >> >> >> _______________________________________________ gem5-users mailing list >> [email protected] http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >> >> >> _______________________________________________ >> gem5-users mailing list >> [email protected] >> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > > > > _______________________________________________ gem5-users mailing list > [email protected] http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > > > _______________________________________________ > gem5-users mailing > [email protected]http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > > > > > _______________________________________________ > gem5-users mailing list > [email protected] > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >
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