[Qemu-devel] [PATCH v3 1/5] tricore: add FTOIZ instruction

[David Brenken <david.brenken@efs-auto.org>]

From: David Brenken <david.brenken@efs-auto.de>

Signed-off-by: Andreas Konopik <andreas.konopik@efs-auto.de>
Signed-off-by: David Brenken <david.brenken@efs-auto.de>
Signed-off-by: Georg Hofstetter <georg.hofstetter@efs-auto.de>
Signed-off-by: Robert Rasche <robert.rasche@efs-auto.de>
Signed-off-by: Lars Biermanski <lars.biermanski@efs-auto.de>
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
---
 target/tricore/fpu_helper.c | 25 +++++++++++++++++++++++++
 target/tricore/helper.h     |  1 +
 target/tricore/translate.c  |  3 +++
 3 files changed, 29 insertions(+)

diff --git a/target/tricore/fpu_helper.c b/target/tricore/fpu_helper.c
index d8a6c0d25b..f079d9e939 100644
--- a/target/tricore/fpu_helper.c
+++ b/target/tricore/fpu_helper.c
@@ -303,6 +303,31 @@ uint32_t helper_itof(CPUTriCoreState *env, uint32_t arg)
     return (uint32_t)f_result;
 }
 
+uint32_t helper_ftoiz(CPUTriCoreState *env, uint32_t arg)
+{
+    float32 f_arg = make_float32(arg);
+    uint32_t result;
+    int32_t flags;
+
+    result = float32_to_int32_round_to_zero(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;
+        }
+    }
+
+    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 f60e81096b..16b62edf7f 100644
--- a/target/tricore/helper.h
+++ b/target/tricore/helper.h
@@ -111,6 +111,7 @@ DEF_HELPER_4(fmsub, i32, env, i32, i32, i32)
 DEF_HELPER_3(fcmp, i32, env, i32, i32)
 DEF_HELPER_2(ftoi, i32, env, i32)
 DEF_HELPER_2(itof, i32, env, i32)
+DEF_HELPER_2(ftoiz, 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 06c4485e55..5e1c4f54b9 100644
--- a/target/tricore/translate.c
+++ b/target/tricore/translate.c
@@ -6747,6 +6747,9 @@ static void decode_rr_divide(CPUTriCoreState *env, DisasContext *ctx)
     case OPC2_32_RR_UPDFL:
         gen_helper_updfl(cpu_env, cpu_gpr_d[r1]);
         break;
+    case OPC2_32_RR_FTOIZ:
+        gen_helper_ftoiz(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1]);
+        break;
     default:
         generate_trap(ctx, TRAPC_INSN_ERR, TIN2_IOPC);
     }
-- 
2.22.0.windows.1