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MIPS: Override assembler target architecture for octeon.

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Gas from binutils 2.19 fails to compile some cop1 instructions with
-march=octeon.  Since the cop1 instructions are present in mips1, use
that arch instead.  This will be fixed in binutils 2.20.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
David Daney 2008-12-11 15:33:25 -08:00 committed by Ralf Baechle
parent ed918c2daf
commit 25c3000300
2 changed files with 6 additions and 0 deletions
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2
arch/mips/include/asm/mipsregs.h
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@ -1028,6 +1028,8 @@ do { \
__asm__ __volatile__( \
".set\tpush\n\t" \
".set\treorder\n\t" \
/* gas fails to assemble cfc1 for some archs (octeon).*/ \
".set\tmips1\n\t" \
"cfc1\t%0,"STR(source)"\n\t" \
".set\tpop" \
: "=r" (__res)); \

4
arch/mips/kernel/genex.S
View File

@ -385,10 +385,14 @@ NESTED(nmi_handler, PT_SIZE, sp)
.endm
.macro __build_clear_fpe
.set push
/* gas fails to assemble cfc1 for some archs (octeon).*/ \
.set mips1
cfc1 a1, fcr31
li a2, ~(0x3f << 12)
and a2, a1
ctc1 a2, fcr31
.set pop
TRACE_IRQS_ON
STI
.endm