MIPS: Fix erroneous JR emulation for MIPS R6

[linux-drm-fsl-dcu.git] / arch / mips / math-emu / cp1emu.c

diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c
index 22b9b2cb9219fa4e4eb7b9cc340125a4c9aa4053..712f17a2ecf206e1b5d33a63956e62baac29cb08 100644 (file)
--- a/arch/mips/math-emu/cp1emu.c
+++ b/arch/mips/math-emu/cp1emu.c
@@ -451,7 +451,7 @@ static int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
                        /* Fall through */
                case jr_op:
                        /* For R6, JR already emulated in jalr_op */
-                       if (NO_R6EMU && insn.r_format.opcode == jr_op)
+                       if (NO_R6EMU && insn.r_format.func == jr_op)
                                break;
                        *contpc = regs->regs[insn.r_format.rs];
                        return 1;
@@ -551,7 +551,7 @@ static int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
                                dec_insn.next_pc_inc;
                return 1;
        case blezl_op:
-               if (NO_R6EMU)
+               if (!insn.i_format.rt && NO_R6EMU)
                        break;
        case blez_op:
 
@@ -588,7 +588,7 @@ static int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
                                dec_insn.next_pc_inc;
                return 1;
        case bgtzl_op:
-               if (NO_R6EMU)
+               if (!insn.i_format.rt && NO_R6EMU)
                        break;
        case bgtz_op:
                /*