MIPS R6 removed the BLTZL instruction so do not try to emulate it
if the R2-to-R6 emulator is not present.
Signed-off-by: Markos Chandras <markos.chandras@xxxxxxxxxx>
---
arch/mips/kernel/branch.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/mips/kernel/branch.c b/arch/mips/kernel/branch.c
index 3df013ef7622..964ee68dcfe6 100644
--- a/arch/mips/kernel/branch.c
+++ b/arch/mips/kernel/branch.c
@@ -439,6 +439,11 @@ int __compute_return_epc_for_insn(struct pt_regs *regs,
switch (insn.i_format.rt) {
case bltz_op:
case bltzl_op:
+ if (NO_R6EMU && insn.i_format.rt == bltzl_op) {
+ ret = -SIGILL;
+ /* not emulating the branch likely for R6 */
+ break;
+ }
if ((long)regs->regs[insn.i_format.rs] < 0) {
epc = epc + 4 + (insn.i_format.simmediate << 2);
if (insn.i_format.rt == bltzl_op)
--
2.2.0
