[PULL 07/45] target/arm: Mark PMULL, FMMLA as non-streaming

[Peter Maydell]

From: Richard Henderson <richard.henderson@linaro.org>

Mark these as a non-streaming instructions, which should trap
if full a64 support is not enabled in streaming mode.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220708151540.18136-8-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/sme-fa64.decode |  2 --
 target/arm/translate-sve.c | 24 +++++++++++++++---------
 2 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/target/arm/sme-fa64.decode b/target/arm/sme-fa64.decode
index 4f515939d9c..4ff2df82e5b 100644
--- a/target/arm/sme-fa64.decode
+++ b/target/arm/sme-fa64.decode
@@ -59,8 +59,6 @@ FAIL    0001 1110 0111 1110 0000 00-- ---- ----   # FJCVTZS
 #       --11 1100 --1- ---- ---- ---- ---- --10   # Load/store FP register 
(register offset)
 #       --11 1101 ---- ---- ---- ---- ---- ----   # Load/store FP register 
(scaled imm)
 
-FAIL    0100 0101 000- ---- 0110 1--- ---- ----   # PMULLB, PMULLT (128b 
result)
-FAIL    0110 0100 --1- ---- 1110 01-- ---- ----   # FMMLA, BFMMLA
 FAIL    0110 0101 --0- ---- 0000 11-- ---- ----   # FTSMUL
 FAIL    0110 0101 --01 0--- 100- ---- ---- ----   # FTMAD
 FAIL    0110 0101 --01 1--- 001- ---- ---- ----   # FADDA
diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c
index ae48040aa4c..4ff2102fc86 100644
--- a/target/arm/translate-sve.c
+++ b/target/arm/translate-sve.c
@@ -6186,9 +6186,13 @@ static bool do_trans_pmull(DisasContext *s, arg_rrr_esz 
*a, bool sel)
         gen_helper_gvec_pmull_q, gen_helper_sve2_pmull_h,
         NULL,                    gen_helper_sve2_pmull_d,
     };
-    if (a->esz == 0
-        ? !dc_isar_feature(aa64_sve2_pmull128, s)
-        : !dc_isar_feature(aa64_sve, s)) {
+
+    if (a->esz == 0) {
+        if (!dc_isar_feature(aa64_sve2_pmull128, s)) {
+            return false;
+        }
+        s->is_nonstreaming = true;
+    } else if (!dc_isar_feature(aa64_sve, s)) {
         return false;
     }
     return gen_gvec_ool_arg_zzz(s, fns[a->esz], a, sel);
@@ -7125,10 +7129,12 @@ DO_ZPZZ_FP(FMINP, aa64_sve2, sve2_fminp_zpzz)
  * SVE Integer Multiply-Add (unpredicated)
  */
 
-TRANS_FEAT(FMMLA_s, aa64_sve_f32mm, gen_gvec_fpst_zzzz, gen_helper_fmmla_s,
-           a->rd, a->rn, a->rm, a->ra, 0, FPST_FPCR)
-TRANS_FEAT(FMMLA_d, aa64_sve_f64mm, gen_gvec_fpst_zzzz, gen_helper_fmmla_d,
-           a->rd, a->rn, a->rm, a->ra, 0, FPST_FPCR)
+TRANS_FEAT_NONSTREAMING(FMMLA_s, aa64_sve_f32mm, gen_gvec_fpst_zzzz,
+                        gen_helper_fmmla_s, a->rd, a->rn, a->rm, a->ra,
+                        0, FPST_FPCR)
+TRANS_FEAT_NONSTREAMING(FMMLA_d, aa64_sve_f64mm, gen_gvec_fpst_zzzz,
+                        gen_helper_fmmla_d, a->rd, a->rn, a->rm, a->ra,
+                        0, FPST_FPCR)
 
 static gen_helper_gvec_4 * const sqdmlal_zzzw_fns[] = {
     NULL,                           gen_helper_sve2_sqdmlal_zzzw_h,
@@ -7301,8 +7307,8 @@ TRANS_FEAT(BFDOT_zzzz, aa64_sve_bf16, 
gen_gvec_ool_arg_zzzz,
 TRANS_FEAT(BFDOT_zzxz, aa64_sve_bf16, gen_gvec_ool_arg_zzxz,
            gen_helper_gvec_bfdot_idx, a)
 
-TRANS_FEAT(BFMMLA, aa64_sve_bf16, gen_gvec_ool_arg_zzzz,
-           gen_helper_gvec_bfmmla, a, 0)
+TRANS_FEAT_NONSTREAMING(BFMMLA, aa64_sve_bf16, gen_gvec_ool_arg_zzzz,
+                        gen_helper_gvec_bfmmla, a, 0)
 
 static bool do_BFMLAL_zzzw(DisasContext *s, arg_rrrr_esz *a, bool sel)
 {
-- 
2.25.1