target-arm: Add support for AArch32 FP VRINTR

Add support for the AArch32 floating-point VRINTR instruction.
Signed-off-by: NWill Newton <will.newton@linaro.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

target-arm/translate.c

@@ -3379,6 +3379,17 @@ static int disas_vfp_insn(CPUARMState * env, DisasContext *s, uint32_t insn)
                         gen_vfp_F1_ld0(dp);
                         gen_vfp_cmpe(dp);
                         break;
+                    case 12: /* vrintr */
+                    {
+                        TCGv_ptr fpst = get_fpstatus_ptr(0);
+                        if (dp) {
+                            gen_helper_rintd(cpu_F0d, cpu_F0d, fpst);
+                        } else {
+                            gen_helper_rints(cpu_F0s, cpu_F0s, fpst);
+                        }
+                        tcg_temp_free_ptr(fpst);
+                        break;
+                    }
                     case 15: /* single<->double conversion */
                         if (dp)
                             gen_helper_vfp_fcvtsd(cpu_F0s, cpu_F0d, cpu_env);