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Re: CVS commit: src/sys/arch/sh3/sh3
On Wed, Dec 12, 2012 at 23:55:31 +0900, Izumi Tsutsui wrote:
> uwe@ wrote:
> > > Log Message:
> > > Fix fallouts in rev 1.19:
> > >
> > > http://www.nerv.org/~ryo/netbsd/netbsd/?q=id:20080316T191753Z.1654448ada03ce3c4668f3fe472796d0b771e147
> > > - revert RUN_P1 -> PAD_P1_SWITCH changes where RUN_P1 is
> > > actually required (all icache CCIA ops still need RUN_P2)
> > Why is it required? The return address is in P1, so the normal "ret"
> > will jump back to P1. Or is there some inlining I missed?
> Ah, I misunderstood it since the log message didn't mention changes
> in icache functions (assumed returning into P1).
It's commented in cpu.h that was part of the changeset (which is hard
to see with cvs).
> > > - sh4_dcache_wbinv_all() and sh4_dcache_wbinv_range_index()
> > > (which manipulate CCDA arrays) are no longer have RUN_P2 so
> > > we can't call them directly from sh4_icache_sync_all() and
> > > sh4_icache_sync_range_index() funcitons; use function pointers
> > > (which have appropriate addresses) instead for 7750 and 7750S
Hmm looking at /* RUN_P2; */ /* called via P2 address if necessary */
comments there, I guess the above was intended but somehow lost.
Thanks for catching it!
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