Following are couple of functions used for reading/writing: - Context::loadvirt - Load max 64bit data from given virtual address - Context::loadphys - Load max 64bit data from given physical address - Context::storemask_virt - Store max 64bit data to given virtual address and it uses mask to write selected bytes - Context::copy_from_user - Load instructions from given virtual address (only used for instructions)
All VM's memory is handled by QEMU and simulator uses QEMU's API's to read/write to VM's RAM, IO and MMIO. - Avadh On Tue, Nov 29, 2011 at 4:03 PM, DRAM Ninjas <[email protected]> wrote: > It reads QEMU's memory. I believe it doesn't write to QEMU's memory since > QEMU will do that on its own. > > As far as reading the memory, I think it uses Context::copy_from_user() in > ptlsim/sim/ptl-qemu.cpp:662 > > On Tue, Nov 29, 2011 at 5:54 PM, Ching-Tsun Chou <[email protected] > > wrote: > >> Does the PTLsim part of MARSS have its own memory (i.e., RAM), or it uses >> QEMU's memory? >> >> Where is the PTLsim code that actually reads and writes that memory? >> >> Thanks in advance! >> - Ching Tsun >> >> >> _______________________________________________ >> http://www.marss86.org >> Marss86-Devel mailing list >> [email protected] >> https://www.cs.binghamton.edu/mailman/listinfo/marss86-devel >> >> > > _______________________________________________ > http://www.marss86.org > Marss86-Devel mailing list > [email protected] > https://www.cs.binghamton.edu/mailman/listinfo/marss86-devel > >
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