On 9 November 2014 15:37, Ronen Meir <ro...@centipede-semi.com> wrote: > I'm using Qemu with ARM as target OS. > > As far as I understand QEMU executes full translation blocks (TB). I would > like to isolate and debug a specific instruction within a translation block.
That depends on what you mean by "debug". The simplest way to debug guest code inside QEMU is to attach a gdb to qemu's builtin gdbstub (you'll need one which understands the ARM architecture; a "multiarch" gdb such as the one shipped in ubuntu's gdb-multiarch package will do). That will let you set breakpoints, single step, and so on, as an assembly level debugger. You can also use QEMU's -singlestep option to force us to put exactly one instruction in each TB. Whether this is actually any use to you depends rather on what you're trying to do; it's probably only really helpful if you're trying to debug QEMU itself, in which case you'll probably also want to use our -d option to enable various kinds of debug logging (including disassembly of guest instructions in and TCG ops and host instructions out). thanks -- PMM
