You could hack up custom m5op magic instructions easily by copying existing ones, but I think it still takes up a memory fetch/decode.
Better than that, only if you hack a way to do something when a given PC is reached. Maybe have a look at how Linux detects panics by reading the PC of the panic symbol and try to adapt something similar. On Fri, Jan 10, 2020 at 6:44 PM Subhankar Pal <s...@umich.edu> wrote: > > Hi! > > I am trying to profile code in detail running on a MinorCPU in SE mode. I'd > like to add profiling instructions into my code, whose execution shouldn't > affect the timing and the code should take the same time to run as it would > without those instructions. At minimum, the profiling instruction should > print the current Tick, memObject name and a word of data that I pass use as > an argument to call it with. Right now, I'm approximating this by doing a > store to a special address that causes the minorCPU to throw the desired > print. However, this method is not 0-overhead. Does anyone have better > suggestions? > > Thanks in advance! > > Subhankar Pal | PhD Candidate, CSE | University of Michigan > _______________________________________________ > gem5-users mailing list > gem5-users@gem5.org > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users _______________________________________________ gem5-users mailing list gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
