target/arm: Convert VJCVT to decodetree

Convert the VJCVT instruction to decodetree.

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

1 files changed, 28 insertions, 0 deletions

diff --git a/target/arm/translate-vfp.inc.c b/target/arm/translate-vfp.inc.c
index cc3f61d9c4..161f0fdd88 100644
--- a/target/arm/translate-vfp.inc.c
+++ b/target/arm/translate-vfp.inc.c
@@ -2426,3 +2426,31 @@ static bool trans_VCVT_int_dp(DisasContext *s, arg_VCVT_int_dp *a)
     tcg_temp_free_ptr(fpst);
     return true;
 }
+
+static bool trans_VJCVT(DisasContext *s, arg_VJCVT *a)
+{
+    TCGv_i32 vd;
+    TCGv_i64 vm;
+
+    if (!dc_isar_feature(aa32_jscvt, s)) {
+        return false;
+    }
+
+    /* UNDEF accesses to D16-D31 if they don't exist. */
+    if (!dc_isar_feature(aa32_fp_d32, s) && (a->vm & 0x10)) {
+        return false;
+    }
+
+    if (!vfp_access_check(s)) {
+        return true;
+    }
+
+    vm = tcg_temp_new_i64();
+    vd = tcg_temp_new_i32();
+    neon_load_reg64(vm, a->vm);
+    gen_helper_vjcvt(vd, vm, cpu_env);
+    neon_store_reg32(vd, a->vd);
+    tcg_temp_free_i64(vm);
+    tcg_temp_free_i32(vd);
+    return true;
+}