powerpc: Enforce usage of RA 0-R31 where possible
authorMichael Neuling <mikey@neuling.org>
Mon, 25 Jun 2012 13:33:25 +0000 (13:33 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Tue, 10 Jul 2012 09:18:35 +0000 (19:18 +1000)
Some macros use RA where when RA=R0 the values is 0, so make this
the enforced mnemonic in the macro.

Idea suggested by Andreas Schwab.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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