On Sun, Aug 06, 2017 at 01:44:52PM +0200, Stefan Weil wrote: > Am 06.08.2017 um 13:25 schrieb Shantanu Agarwal: > > Hello all, > > I was reading about qemu, trying to understand the source code. I found > > that vl.c is considered the main file of qemu source code from where all > > the execution starts. So I flipped some values, i even put a exit(0) just > > after the int main starts, but nothing is changed. Qemu is fully > > functional. Also i put many printf's in between but no output at all. Am I > > missing something or vl.c is not the main file. > > > > Hi, > > the main function in vl.c is the correct entry point. > If you don't see an effect of your changes, then you > are probably calling an executable which is not the > changed one.
Yes, this is a common cause for this problem. Are you launching the correct QEMU binary? For example, the x86 full-system emulator built in the source tree can be run like this: $ cd qemu $ x86_64-softmmu/qemu-system-x86_64 Remember that operating systems resolve shell commands using the PATH environment variable. If you ran 'qemu-system-x86_64' without a relative or absolute path then you are probably running the QEMU binary that was installed from a package somewhere else on your system (e.g. /usr/bin/qemu-system-x86_64). If you ran 'make install' then make sure to give the full path to the QEMU binary (e.g. /usr/local/bin/qemu-system-x86_64) or set PATH so /usr/local/bin comes before other directories in the search path. Stefan
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