is_jump_ins() checks for plain jump ("j") instructions since commit
e7438c4b893e ("MIPS: Fix sibling call handling in get_frame_info") but
that commit didn't make the same change to the microMIPS code, leaving
it inconsistent with the MIPS32/MIPS64 code. Handle the microMIPS
encoding of the jump instruction too such that it behaves consistently.
Signed-off-by: Paul Burton <paul.burton@xxxxxxxxxx>
Fixes: e7438c4b893e ("MIPS: Fix sibling call handling in get_frame_info")
Cc: linux-mips@xxxxxxxxxxxxxx
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: Tony Wu <tung7970@xxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # v3.10+
---
arch/mips/kernel/process.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index 39c946f..1652f36 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -293,6 +293,8 @@ static inline int is_jump_ins(union mips_instruction *ip)
return 0;
}
+ if (ip->j_format.opcode == mm_j32_op)
+ return 1;
if (ip->j_format.opcode == mm_jal32_op)
return 1;
if (ip->r_format.opcode != mm_pool32a_op ||
--
2.10.2
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