target/tricore: Implement FTOU insn

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-ID: <20230828112651.522058-5-kbastian@mail.uni-paderborn.de>

3 files changed, 36 insertions, 0 deletions

diff --git a/target/tricore/fpu_helper.c b/target/tricore/fpu_helper.c
index cb7ee7dd35..3aefeb776e 100644
--- a/target/tricore/fpu_helper.c
+++ b/target/tricore/fpu_helper.c
@@ -429,6 +429,38 @@ uint32_t helper_ftoiz(CPUTriCoreState *env, uint32_t arg)
     return result;
 }
 
+uint32_t helper_ftou(CPUTriCoreState *env, uint32_t arg)
+{
+    float32 f_arg = make_float32(arg);
+    uint32_t result;
+    int32_t flags = 0;
+
+    result = float32_to_uint32(f_arg, &env->fp_status);
+
+    flags = f_get_excp_flags(env);
+    if (flags & float_flag_invalid) {
+        flags &= ~float_flag_inexact;
+        if (float32_is_any_nan(f_arg)) {
+            result = 0;
+        }
+    /*
+     * we need to check arg < 0.0 before rounding as TriCore needs to raise
+     * float_flag_invalid as well. For instance, when we have a negative
+     * exponent and sign, softfloat would only raise float_flat_inexact.
+     */
+    } else if (float32_lt_quiet(f_arg, 0, &env->fp_status)) {
+        flags = float_flag_invalid;
+        result = 0;
+    }
+
+    if (flags) {
+        f_update_psw_flags(env, flags);
+    } else {
+        env->FPU_FS = 0;
+    }
+    return result;
+}
+
 uint32_t helper_ftouz(CPUTriCoreState *env, uint32_t arg)
 {
     float32 f_arg = make_float32(arg);
diff --git a/target/tricore/helper.h b/target/tricore/helper.h
index 190645413a..827fbaa692 100644
--- a/target/tricore/helper.h
+++ b/target/tricore/helper.h
@@ -114,6 +114,7 @@ DEF_HELPER_2(ftoi, i32, env, i32)
 DEF_HELPER_2(itof, i32, env, i32)
 DEF_HELPER_2(utof, i32, env, i32)
 DEF_HELPER_2(ftoiz, i32, env, i32)
+DEF_HELPER_2(ftou, i32, env, i32)
 DEF_HELPER_2(ftouz, i32, env, i32)
 DEF_HELPER_2(updfl, void, env, i32)
 /* dvinit */
diff --git a/target/tricore/translate.c b/target/tricore/translate.c
index 4e7e18f985..382ecf4775 100644
--- a/target/tricore/translate.c
+++ b/target/tricore/translate.c
@@ -6269,6 +6269,9 @@ static void decode_rr_divide(DisasContext *ctx)
     case OPC2_32_RR_ITOF:
         gen_helper_itof(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1]);
         break;
+    case OPC2_32_RR_FTOU:
+        gen_helper_ftou(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1]);
+        break;
     case OPC2_32_RR_FTOUZ:
         gen_helper_ftouz(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1]);
         break;