On Sun, Jul 04, 2004 at 03:30:47AM +0200, Stef Simoens wrote:

Olaf Hering wrote:

quoted

On Tue, Jun 15, Tom Rini wrote:

quoted

And yes, passing -many does work on all older supported versions of
binutils.  So perhaps we should just add -Wa,-many to our cflags and be
done with it now (and for future fixes of this sort).

gcc 3.2 passes only -mppc, so all altive instructions will fail to
compile without either -many or -maltivec

Are there altivec instructions when CONFIG_ALTIVEC is not set?

Yes.  And I can forsee in the future were we might have BookE specific
ones in the same situation.

quoted

ifdef CONFIG_4xx
EXTRA_AFLAGS		:= -Wa,-m405
endif
+ifdef CONFIG_6xx
+EXTRA_AFLAGS		:= -Wa,-maltivec
+endif
ifdef CONFIG_E500
EXTRA_AFLAGS		:= -Wa,-me500
endif

So, shouldn't this be "ifdef CONFIG_ALTIVEC" ?

No, it should be always -Wa,-many.  The kernel has, and almost certainly
will, continue to put AltiVec, or BookE, or whatever, instructions in
code that will be compiled for, and run on, CPUs that can't use the
instructions (we nop them out at runtime).

--
Tom Rini
http://gate.crashing.org/~trini/

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