diff options
| author | Paul Burton <paul.burton@imgtec.com> | 2014-01-27 15:23:09 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-03-26 23:09:10 +0100 |
| commit | 7f65afb97f279d9d02d0779384e8bd5ace064dea (patch) | |
| tree | dc478d16bb3d470e5dcd4b167c969656ac7a874e /arch/mips/Makefile | |
| parent | 02987633df7ba2f62967791dda816eb191d1add3 (diff) | |
MIPS: Add MSA register definitions & access
This patch introduces definitions for the MSA control registers and
functions which allow access to both the control & vector registers. If
the toolchain being used to build the kernel includes support for MSA
then this patch will make use of that support & use MSA instructions
directly. However toolchain support for MSA is very new & far from a
point where it can be reasonably expected that everyone building the
kernel uses a toolchain with support. Thus fallbacks using .word
assembler directives are also provided for now as a temporary measure.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6429/
Patchwork: https://patchwork.linux-mips.org/patch/6607/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/Makefile')
| -rw-r--r-- | arch/mips/Makefile | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/mips/Makefile b/arch/mips/Makefile index 9b8556de9993..1a5b4032cb66 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -119,6 +119,11 @@ cflags-$(CONFIG_CPU_MICROMIPS) += $(call cc-option,-mmicromips) cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \ -fno-omit-frame-pointer +ifeq ($(CONFIG_CPU_HAS_MSA),y) +toolchain-msa := $(call cc-option-yn,-mhard-float -mfp64 -mmsa) +cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA +endif + # # CPU-dependent compiler/assembler options for optimization. # |