From 5f9f41c474befb4ebbc40b27f65bb7d649241581 Mon Sep 17 00:00:00 2001 From: Markos Chandras Date: Tue, 25 Nov 2014 15:54:14 +0000 Subject: MIPS: kernel: Prepare the JR instruction for emulation on MIPS R6 The MIPS R6 JR instruction is an alias to the JALR one, so it may need emulation for non-R6 userlands. Signed-off-by: Markos Chandras --- arch/mips/math-emu/cp1emu.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/mips/math-emu') diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c index 9dfcd7fc1bc3..9bf82117b4f2 100644 --- a/arch/mips/math-emu/cp1emu.c +++ b/arch/mips/math-emu/cp1emu.c @@ -448,6 +448,9 @@ static int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn, dec_insn.next_pc_inc; /* Fall through */ case jr_op: + /* For R6, JR already emulated in jalr_op */ + if (NO_R6EMU && insn.r_format.opcode == jr_op) + break; *contpc = regs->regs[insn.r_format.rs]; return 1; } -- cgit v1.2.2