@@ -2754,3 +2754,7 @@ DEF_HELPER_FLAGS_5(sve2_fcvtlt_hs, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_5(sve2_fcvtlt_sd, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_5(flogb_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_5(flogb_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_5(flogb_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)
@@ -1588,3 +1588,6 @@ FCVTNT_sh 01100100 10 0010 00 101 ... ..... ..... @rd_pg_rn_e0
FCVTLT_hs 01100100 10 0010 01 101 ... ..... ..... @rd_pg_rn_e0
FCVTNT_ds 01100100 11 0010 10 101 ... ..... ..... @rd_pg_rn_e0
FCVTLT_sd 01100100 11 0010 11 101 ... ..... ..... @rd_pg_rn_e0
+
+### SVE2 floating-point convert to integer
+FLOGB 01100101 00 011 esz:2 0101 pg:3 rn:5 rd:5 &rpr_esz
@@ -4729,6 +4729,94 @@ DO_ZPZ_FP(sve_ucvt_dh, uint64_t, , uint64_to_float16)
DO_ZPZ_FP(sve_ucvt_ds, uint64_t, , uint64_to_float32)
DO_ZPZ_FP(sve_ucvt_dd, uint64_t, , uint64_to_float64)
+static int16_t do_float16_logb_as_int(float16 a, float_status *s)
+{
+ /* Extract frac to the top of the uint32_t. */
+ uint32_t frac = (uint32_t)a << (16 + 6);
+ int16_t exp = extract32(a, 10, 5);
+
+ if (unlikely(exp == 0)) {
+ if (frac != 0) {
+ if (!get_flush_inputs_to_zero(s)) {
+ /* denormal: bias - fractional_zeros */
+ return -15 - clz32(frac);
+ }
+ /* flush to zero */
+ float_raise(float_flag_input_denormal, s);
+ }
+ } else if (unlikely(exp == 0x1f)) {
+ if (frac == 0) {
+ return INT16_MAX; /* infinity */
+ }
+ } else {
+ /* normal: exp - bias */
+ return exp - 15;
+ }
+ /* nan or zero */
+ float_raise(float_flag_invalid, s);
+ return INT16_MIN;
+}
+
+static int32_t do_float32_logb_as_int(float32 a, float_status *s)
+{
+ /* Extract frac to the top of the uint32_t. */
+ uint32_t frac = a << 9;
+ int32_t exp = extract32(a, 23, 8);
+
+ if (unlikely(exp == 0)) {
+ if (frac != 0) {
+ if (!get_flush_inputs_to_zero(s)) {
+ /* denormal: bias - fractional_zeros */
+ return -127 - clz32(frac);
+ }
+ /* flush to zero */
+ float_raise(float_flag_input_denormal, s);
+ }
+ } else if (unlikely(exp == 0xff)) {
+ if (frac == 0) {
+ return INT32_MAX; /* infinity */
+ }
+ } else {
+ /* normal: exp - bias */
+ return exp - 127;
+ }
+ /* nan or zero */
+ float_raise(float_flag_invalid, s);
+ return INT32_MIN;
+}
+
+static int64_t do_float64_logb_as_int(float64 a, float_status *s)
+{
+ /* Extract frac to the top of the uint64_t. */
+ uint64_t frac = a << 12;
+ int64_t exp = extract64(a, 52, 11);
+
+ if (unlikely(exp == 0)) {
+ if (frac != 0) {
+ if (!get_flush_inputs_to_zero(s)) {
+ /* denormal: bias - fractional_zeros */
+ return -1023 - clz64(frac);
+ }
+ /* flush to zero */
+ float_raise(float_flag_input_denormal, s);
+ }
+ } else if (unlikely(exp == 0x7ff)) {
+ if (frac == 0) {
+ return INT64_MAX; /* infinity */
+ }
+ } else {
+ /* normal: exp - bias */
+ return exp - 1023;
+ }
+ /* nan or zero */
+ float_raise(float_flag_invalid, s);
+ return INT64_MIN;
+}
+
+DO_ZPZ_FP(flogb_h, float16, H1_2, do_float16_logb_as_int)
+DO_ZPZ_FP(flogb_s, float32, H1_4, do_float32_logb_as_int)
+DO_ZPZ_FP(flogb_d, float64, , do_float64_logb_as_int)
+
#undef DO_ZPZ_FP
static void do_fmla_zpzzz_h(void *vd, void *vn, void *vm, void *va, void *vg,
@@ -8307,3 +8307,27 @@ static bool trans_FCVTXNT_ds(DisasContext *s, arg_rpr_esz *a)
}
return do_frint_mode(s, a, float_round_to_odd, gen_helper_sve2_fcvtnt_ds);
}
+
+static bool trans_FLOGB(DisasContext *s, arg_rpr_esz *a)
+{
+ static gen_helper_gvec_3_ptr * const fns[] = {
+ NULL, gen_helper_flogb_h,
+ gen_helper_flogb_s, gen_helper_flogb_d
+ };
+
+ if (!dc_isar_feature(aa64_sve2, s) || fns[a->esz] == NULL) {
+ return false;
+ }
+ if (sve_access_check(s)) {
+ TCGv_ptr status =
+ fpstatus_ptr(a->esz == MO_16 ? FPST_FPCR_F16 : FPST_FPCR);
+ unsigned vsz = vec_full_reg_size(s);
+
+ tcg_gen_gvec_3_ptr(vec_full_reg_offset(s, a->rd),
+ vec_full_reg_offset(s, a->rn),
+ pred_full_reg_offset(s, a->pg),
+ status, vsz, vsz, 0, fns[a->esz]);
+ tcg_temp_free_ptr(status);
+ }
+ return true;
+}