target-tricore: Add mul.f instruction

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-Id: <1457708597-3025-5-git-send-email-kbastian@mail.uni-paderborn.de>

1 files changed, 26 insertions, 0 deletions

diff --git a/target-tricore/fpu_helper.c b/target-tricore/fpu_helper.c
index 747d897..21459bc 100644
--- a/target-tricore/fpu_helper.c
+++ b/target-tricore/fpu_helper.c
@@ -106,3 +106,29 @@ uint32_t helper_f##op(CPUTriCoreState *env, uint32_t r1, uint32_t r2)          \
 }
 FADD_SUB(add)
 FADD_SUB(sub)
+
+uint32_t helper_fmul(CPUTriCoreState *env, uint32_t r1, uint32_t r2)
+{
+    uint32_t flags;
+    float32 arg1 = make_float32(r1);
+    float32 arg2 = make_float32(r2);
+    float32 f_result;
+
+    f_result = float32_mul(arg1, arg2, &env->fp_status);
+
+    flags = f_get_excp_flags(env);
+    if (flags) {
+        /* If the output is a NaN, but the inputs aren't,
+           we return a unique value.  */
+        if ((flags & float_flag_invalid)
+            && !float32_is_any_nan(arg1)
+            && !float32_is_any_nan(arg2)) {
+                f_result = MUL_NAN;
+        }
+        f_update_psw_flags(env, flags);
+    } else {
+        env->FPU_FS = 0;
+    }
+    return (uint32_t)f_result;
+
+}