Regarding addition of SH4A support in SH port
tm_gccmail@kloo.net
tm_gccmail@kloo.net
Sat Mar 12 01:43:00 GMT 2005
On Mon, 21 Feb 2005, Andrew STUBBS wrote:
> > We have some observations about SH4A specific instructions.
> > We could only test following SH4A specific instructions with
> > test cases added in test suite,
> > "fsca"
> > "fsrra"
>
> These two instructions are not SH4a specific. If the compilers thinks they
> are then it is wrong and we should do something about it.
This isn't entirely true.
These two instructions were developed for a specific customer of the
SH7750, and are tested on the SH7750.
They do exist on the other SH4s, such as the SH7751, SH7760, SH7761, etc
but I don't think they are fully tested on these implementations.d
Therefore, using these instructions on other SH4 variants is risky at
best.
Toshi
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