Re: Unrecognized opcode: `mtdcr'

On Wed, May 29, 2002 at 12:54:29PM -0700, Tom Rini wrote:

On Wed, May 29, 2002 at 02:30:16PM -0500, Cameron, Steve wrote:

quoted

[..snip...]

quoted

I think we need to change arch/ppc/Makefile from:
ifdef CONFIG_40x
CFLAGS := $(CFLAGS) -Wa,-m405
endif

To:
ifdef CONFIG_4xx
CFLAGS := $(CFLAGS) -Wa,-m405
endif

Ok, this worked for me.  Thanks!  (I guess I wasn't so
far off track after all.)

Pushed this.

quoted

quoted

For the moment.  Until there's some 440-specific opcodes we use (are
there any?) which means we'll need to do -Wa,-m440.

When I had tried "-Wa,-m440" before, it wasn't recognized as an option.
(but perhaps by "do -Wa,-m440", you mean enhance the C compiler and/or
assembler.)

Well, iff there's 440-specific opcodes, at somepoint gas will know about
them, and we can use -Wa,-m440, or so.  But for now -Wa,-m405 seems
correct for 4xx.

There is _a_ 440-specific opcode, dlbmnz.  It's not yet supported by
gas (and ideally glibc).  For now, a 405 enabled toolchain is
sufficient.

When I push some CONFIG_BOOKE cleanup we'll have an option to enable
-mbooke with as well.  That's where most of the new instructions
come from, but they aren't 440 specific (they'll be on the e500
Book E core as well).  Right now, the important booke opcodes
are picked up by the PPC403 conf in gas so there's not a huge
hurry.

Regards,
--
Matt Porter
porter@cox.net
This is Linux Country. On a quiet night, you can hear Windows reboot.

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