Re: [PATCH] qemu/timer: Don't use RDTSC on i486

[Samuel Tardieu]

Petr Cvek <petrcvekcz@gmail.com> writes:

> GCC defines __i386__ for i386 and i486, which both lack RDTSC 
> instruction.
> The i386 seems to be impossible to distinguish, but i486 can be 
> identified
> by checking for undefined __i486__.

Couldn't you check for an undefined __tune_i386__, which would be 
set by both GCC and LLVM when using -march=i386.

 Sam
--
Samuel Tardieu
Télécom Paris - Institut Polytechnique de Paris