Re: [Freemint-discuss] Ssystem( ) and ColdFire processors

[David G. <dga...@gm...>]

2018-04-25 0:21 GMT+02:00 Vincent Rivière <vin...@fr...>:
>
> In case of FireTOS, the _CPU cookie reflects what the *emulated* CPU is
> supposed to be. Maybe it should be the same for Ssystem(), that would make
> sense. Then provide new *documented* way to add information for ColdFire,
> which can't clash with any 680x0 values.
>

The information given by this system call is independent from the
machine you're running the kernel on, so it can be a bit confusing.
It's the option it was used to compile the kernel.
If you're using a 060 kernel with FireTOS it will return 68060 but if
you are using a 5475 kernel it will return a ColdFire kernel with
isa_b instruction set.
>From the documentation:
"This is not the same as the _CPU cookie value. The _CPU cookie
specifies the CPU physically present in the machine, while the
S_OSCOMPILE indicates the processor type selected at the time when the
system was compiled. In other words, running a 68000-compiled kernel
will return a 0x00 here, even if the machine is running 68040 or
something."