target/arm: Convert VCADD (vector) to decodetree

Convert the VCADD (vector) insns to decodetree.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200430181003.21682-6-peter.maydell@linaro.org

1 files changed, 37 insertions, 0 deletions

diff --git a/target/arm/translate-neon.inc.c b/target/arm/translate-neon.inc.c
index 0baae1338a..28011e88d9 100644
--- a/target/arm/translate-neon.inc.c
+++ b/target/arm/translate-neon.inc.c
@@ -67,3 +67,40 @@ static bool trans_VCMLA(DisasContext *s, arg_VCMLA *a)
     tcg_temp_free_ptr(fpst);
     return true;
 }
+
+static bool trans_VCADD(DisasContext *s, arg_VCADD *a)
+{
+    int opr_sz;
+    TCGv_ptr fpst;
+    gen_helper_gvec_3_ptr *fn_gvec_ptr;
+
+    if (!dc_isar_feature(aa32_vcma, s)
+        || (!a->size && !dc_isar_feature(aa32_fp16_arith, s))) {
+        return false;
+    }
+
+    /* UNDEF accesses to D16-D31 if they don't exist. */
+    if (!dc_isar_feature(aa32_simd_r32, s) &&
+        ((a->vd | a->vn | a->vm) & 0x10)) {
+        return false;
+    }
+
+    if ((a->vn | a->vm | a->vd) & a->q) {
+        return false;
+    }
+
+    if (!vfp_access_check(s)) {
+        return true;
+    }
+
+    opr_sz = (1 + a->q) * 8;
+    fpst = get_fpstatus_ptr(1);
+    fn_gvec_ptr = a->size ? gen_helper_gvec_fcadds : gen_helper_gvec_fcaddh;
+    tcg_gen_gvec_3_ptr(vfp_reg_offset(1, a->vd),
+                       vfp_reg_offset(1, a->vn),
+                       vfp_reg_offset(1, a->vm),
+                       fpst, opr_sz, opr_sz, a->rot,
+                       fn_gvec_ptr);
+    tcg_temp_free_ptr(fpst);
+    return true;
+}