[PATCH AUTOSEL 4.14 077/170] mips: bpf: fix encoding bug for mm_srlv32_op

Sasha Levin
2019-01-28T16:15:27Z

From: Jiong Wang <jiong.wang@netronome.com>

[ Upstream commit 17f6c83fb5ebf7db4fcc94a5be4c22d5a7bfe428 ]

For micro-mips, srlv inside POOL32A encoding space should use 0x50
sub-opcode, NOT 0x90.

Some early version ISA doc describes the encoding as 0x90 for both srlv and
srav, this looks to me was a typo. I checked Binutils libopcode
implementation which is using 0x50 for srlv and 0x90 for srav.

v1->v2:
- Keep mm_srlv32_op sorted by value.

Fixes: f31318fdf324 ("MIPS: uasm: Add srlv uasm instruction")
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/mips/include/uapi/asm/inst.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/include/uapi/asm/inst.h b/arch/mips/include/uapi/asm/inst.h
index c05dcf5ab414..273ef58f4d43 100644
--- a/arch/mips/include/uapi/asm/inst.h
+++ b/arch/mips/include/uapi/asm/inst.h
@@ -369,8 +369,8 @@ enum mm_32a_minor_op {
mm_ext_op = 0x02c,
mm_pool32axf_op = 0x03c,
mm_srl32_op = 0x040,
+ mm_srlv32_op = 0x050,
mm_sra_op = 0x080,
- mm_srlv32_op = 0x090,
mm_rotr_op = 0x0c0,
mm_lwxs_op = 0x118,
mm_addu32_op = 0x150,
--
2.19.1