search for: debugger_trap_entry

...there, again I set X86_EFLAGS_TF flag to get guest trapped for next instruction and so on. When i want it to be end I will set X86_EFLAGS_RF flag. However, when I perform above-mentioned procedure I get to see a message "Trace/breakpoint trap" in my guest OS only once and my do_debug or (debugger_trap_entry method with vector = Trap_debug) does not get invoked at all inside Xen. Since trap is not coming into Xen, I am not able to get the control after execution of instructions. It seems like with my above-described method, I am injecting TRAP_debug exception for the instruction that I emulate inside...

hi,all has anyone set the eflags.TF of vm? I want to introdeuce a VM into single-step by setting the eflags.TF of vm, then I disassemble the bytes at RIP to figure out what''s going on . I have set the trap flag ,but I didn''t achieve what I want. First, I only get hlt,mov, rdtsc, clts, in, out . Second, the VM always crash. does anyone have experience and give