fche changed the topic of #systemtap to: http://sourceware.org/systemtap; email systemtap@sourceware.org if answers here not timely, conversations may be logged
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<gromero>
hi. is it possible to attach a uprove on a process by specifying and address in order to dump a register value when the instruction in that address is executed ? or it's only possible to do that in the entry/return point?
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<wcohen>
gromero, you should be able to probe individual instruction with something like process("/bin/vi").statement(0x2222) from "man stapprobes" or particular line number with process("/bin/vi"/).function("main@main.c:25") and something like register("eax") to get the value of eax.
<wcohen>
or just dump out all the registers with "print_regs()"
<gromero>
wcohen: thanks a lot. it works perfectly and I'm able to observe the behavior of a single load immediate instruction in userspace.