[Qemu-devel] [PATCH v2 7/7] target-tricore: Add ftoi and itof instructions

[Bastian Koppelmann <kbastian@mail.uni-paderborn.de>]

Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
---
v1 -> v2:
    - ftoi/itof now use f_update_psw_flags to update exception flags

 target-tricore/fpu_helper.c | 35 +++++++++++++++++++++++++++++++++++
 target-tricore/helper.h     |  2 ++
 target-tricore/translate.c  |  6 ++++++
 3 files changed, 43 insertions(+)

diff --git a/target-tricore/fpu_helper.c b/target-tricore/fpu_helper.c
index b02e7aa..b7e9f08 100644
--- a/target-tricore/fpu_helper.c
+++ b/target-tricore/fpu_helper.c
@@ -189,3 +189,38 @@ uint32_t helper_fcmp(CPUTriCoreState *env, uint32_t r1, uint32_t r2)
     set_flush_inputs_to_zero(1, &env->fp_status);
     return result;
 }
+
+uint32_t helper_ftoi(CPUTriCoreState *env, uint32_t arg)
+{
+    float32 f_arg = make_float32(arg);
+    int32_t result, flags;
+
+    result = float32_to_int32(f_arg, &env->fp_status);
+
+    flags = f_get_excp_flags(env);
+    if (flags) {
+        if (float32_is_any_nan(f_arg)) {
+            result = 0;
+        }
+        f_update_psw_flags(env, flags);
+    } else {
+        env->FPU_FS = 0;
+    }
+    return (uint32_t)result;
+}
+
+uint32_t helper_itof(CPUTriCoreState *env, uint32_t arg)
+{
+    float32 f_result;
+    uint32_t flags;
+    f_result = int32_to_float32(arg, &env->fp_status);
+
+    flags = f_get_excp_flags(env);
+
+    if (flags) {
+        f_update_psw_flags(env, flags);
+    } else {
+        env->FPU_FS = 0;
+    }
+    return (uint32_t)f_result;
+}
diff --git a/target-tricore/helper.h b/target-tricore/helper.h
index 489530f..9333e16 100644
--- a/target-tricore/helper.h
+++ b/target-tricore/helper.h
@@ -110,6 +110,8 @@ DEF_HELPER_3(fsub, i32, env, i32, i32)
 DEF_HELPER_3(fmul, i32, env, i32, i32)
 DEF_HELPER_3(fdiv, i32, env, i32, i32)
 DEF_HELPER_3(fcmp, i32, env, i32, i32)
+DEF_HELPER_2(ftoi, i32, env, i32)
+DEF_HELPER_2(itof, i32, env, i32)
 /* dvinit */
 DEF_HELPER_3(dvinit_b_13, i64, env, i32, i32)
 DEF_HELPER_3(dvinit_b_131, i64, env, i32, i32)
diff --git a/target-tricore/translate.c b/target-tricore/translate.c
index d1ddaad..fe77d8a 100644
--- a/target-tricore/translate.c
+++ b/target-tricore/translate.c
@@ -6681,6 +6681,12 @@ static void decode_rr_divide(CPUTriCoreState *env, DisasContext *ctx)
     case OPC2_32_RR_CMP_F:
         gen_helper_fcmp(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1], cpu_gpr_d[r2]);
         break;
+    case OPC2_32_RR_FTOI:
+        gen_helper_ftoi(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1]);
+        break;
+    case OPC2_32_RR_ITOF:
+        gen_helper_itof(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1]);
+        break;
     default:
         generate_trap(ctx, TRAPC_INSN_ERR, TIN2_IOPC);
     }
-- 
2.7.2