> On 29 May 2015, at 00:09, Aurelio C. Remonda <[email protected]> wrote:
>
> This patch adds the Cortex-M4 CPU. The M4 is basically the same as the M3,
> the main differences being the DSP instructions and an optional FPU.
> The DSP instructions are already implemented in Qemu, as the A and R profiles
> use them.
great!
Peter mentioned some differences in exception processing, did you check if they
require changes in emulation?
> The optional FPU in the M4 could be added in the future as a "Cortex-M4F" CPU.
in my implementation I had a single name ("cortex-m4") and some flags, but a
separate name is probably better. can we reserve
{ .name = "cortex-m4f", ... }
for this purpose?
> All we'd have to do is add the ARM_FEATURE_VFP4 to the initfn.
if it is that simple, why don't we add it in for now?
regards,
Liviu
