Displaying 2 results from an estimated 2 matches for "debugger_trap_entri".
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debugger_trap_entry
2008 Jun 24
3
Question related to Single-step execution and Emulation
Hi all,
I am trying to perform single-stepping and instruction emulation both in Xen-3.2.1. I am using the following approach:
First, I mark a guest page "not present" inside the shadow page table so that I could intercept any operation that involves this page. When the guest tries to access that page, it faults and control goes to Xen (sh_page_fault function). There, I emulate that
2013 Jul 09
1
set the eflags.tf of VM
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