Commit 03df01ed authored by Peter Maydell's avatar Peter Maydell
Browse files

target-arm: A64: Implement FRINT* 



Implement the FRINT* round-to-integral operations from
the 2-reg-misc category.

Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: default avatarRichard Henderson <rth@twiddle.net>
Message-id: 1394822294-14837-16-git-send-email-peter.maydell@linaro.org
parent 37a706ad

target-arm/translate-a64.c

+42 −3
Original line number Diff line number Diff line
@@ -6800,6 +6800,17 @@ static void handle_2misc_64(DisasContext *s, int opcode, bool u, 
        tcg_temp_free_i32(tcg_shift);

        break;

    }

    case 0x18: /* FRINTN */

    case 0x19: /* FRINTM */

    case 0x38: /* FRINTP */

    case 0x39: /* FRINTZ */

    case 0x58: /* FRINTA */

    case 0x79: /* FRINTI */

        gen_helper_rintd(tcg_rd, tcg_rn, tcg_fpstatus);

        break;

    case 0x59: /* FRINTX */

        gen_helper_rintd_exact(tcg_rd, tcg_rn, tcg_fpstatus);

        break;

    default:

        g_assert_not_reached();

    }
@@ -8999,12 +9010,29 @@ static void disas_simd_two_reg_misc(DisasContext *s, uint32_t insn) 
        case 0x19: /* FRINTM */

        case 0x38: /* FRINTP */

        case 0x39: /* FRINTZ */

            need_rmode = true;

            rmode = extract32(opcode, 5, 1) | (extract32(opcode, 0, 1) << 1);

            /* fall through */

        case 0x59: /* FRINTX */

        case 0x79: /* FRINTI */

            need_fpstatus = true;

            if (size == 3 && !is_q) {

                unallocated_encoding(s);

                return;

            }

            break;

        case 0x58: /* FRINTA */

            need_rmode = true;

            rmode = FPROUNDING_TIEAWAY;

            need_fpstatus = true;

            if (size == 3 && !is_q) {

                unallocated_encoding(s);

                return;

            }

            break;

        case 0x3c: /* URECPE */

        case 0x3d: /* FRECPE */

        case 0x56: /* FCVTXN, FCVTXN2 */

        case 0x58: /* FRINTA */

        case 0x59: /* FRINTX */

        case 0x79: /* FRINTI */

        case 0x7c: /* URSQRTE */

        case 0x7d: /* FRSQRTE */

            unsupported_encoding(s, insn);
@@ -9130,6 +9158,17 @@ static void disas_simd_two_reg_misc(DisasContext *s, uint32_t insn) 
                    tcg_temp_free_i32(tcg_shift);

                    break;

                }

                case 0x18: /* FRINTN */

                case 0x19: /* FRINTM */

                case 0x38: /* FRINTP */

                case 0x39: /* FRINTZ */

                case 0x58: /* FRINTA */

                case 0x79: /* FRINTI */

                    gen_helper_rints(tcg_res, tcg_op, tcg_fpstatus);

                    break;

                case 0x59: /* FRINTX */

                    gen_helper_rints_exact(tcg_res, tcg_op, tcg_fpstatus);

                    break;

                default:

                    g_assert_not_reached();

                }