1 files changed, 127 insertions, 0 deletions
diff --git a/testsuite/gna/issue1256/vpi_plugin.c b/testsuite/gna/issue1256/vpi_plugin.c
new file mode 100644
index 000000000..6d365cc82
--- /dev/null
+++ b/testsuite/gna/issue1256/vpi_plugin.c
@@ -0,0 +1,127 @@
+#include<vpi_user.h>
+#include<inttypes.h>
+#include<stdio.h>
+
+#define STOP_ITERATION 5
+
+static uint32_t iteration = 0;
+
+static const char* const input_values[5] = {"000",
+					    "001",
+					    "010",
+					    "011",
+					    "100"};
+
+static vpiHandle enum_in_handle;
+static vpiHandle enum_out_handle;
+static vpiHandle enum_decoded_handle;
+
+static PLI_INT32 start_cb(p_cb_data);
+static PLI_INT32 end_cb(p_cb_data);
+static PLI_INT32 rw_cb(p_cb_data);
+static PLI_INT32 ro_cb(p_cb_data);
+static PLI_INT32 delay_rw_cb(p_cb_data);
+static PLI_INT32 delay_ro_cb(p_cb_data);
+
+static void register_cb(PLI_INT32(*f)(p_cb_data),
+			PLI_INT32 reason,
+			int64_t cycles)
+{
+
+    s_cb_data cbData;
+    s_vpi_time simuTime;
+    if (cycles < 0){
+        cbData.time = NULL;
+    } else {
+        cbData.time = &simuTime;
+        simuTime.type = vpiSimTime;
+        simuTime.high = (PLI_INT32) (cycles >> 32);
+        simuTime.low = (PLI_INT32) (cycles & 0xFFFFFFFF);
+    }
+
+    cbData.reason = reason;
+    cbData.cb_rtn = f;
+    cbData.user_data = 0;
+    cbData.value = 0;
+
+    vpi_register_cb(&cbData);
+}
+
+static void entry_point_cb() {
+    register_cb(start_cb, cbStartOfSimulation, -1);
+    register_cb(end_cb, cbEndOfSimulation, -1);
+    register_cb(delay_ro_cb, cbAfterDelay, 0);
+}
+
+static PLI_INT32 start_cb(p_cb_data data){
+    (void) data;
+    printf("Start of simulation \n");
+
+    enum_in_handle = vpi_handle_by_name("enum_test.enum_in", NULL);
+    if(!enum_in_handle) printf("enum in not found\n");
+    enum_out_handle = vpi_handle_by_name("enum_test.enum_out", NULL);
+    if(!enum_out_handle) printf("enum out not found\n");
+    enum_decoded_handle = vpi_handle_by_name("enum_test.enum_decoded", NULL);
+    if(!enum_decoded_handle) printf("enum decoded not found\n");
+
+    return 0;
+}
+
+static PLI_INT32 end_cb(p_cb_data data){
+    (void) data;
+    printf("End of simulation %u \n", iteration);
+    return 0;
+}
+
+
+static PLI_INT32 rw_cb(p_cb_data data){
+    (void) data;
+    s_vpi_value val;
+    val.format = vpiBinStrVal;
+
+    if(iteration > 0) {
+        vpi_get_value(enum_decoded_handle, &val);
+        val.format = vpiBinStrVal;
+        printf("enum decoded = %s iteration %d \n", val.value.str, iteration);
+        vpi_get_value(enum_out_handle, &val);
+        printf("enum out = %s iteration %d \n", val.value.str, iteration);
+
+        val.format = vpiBinStrVal;
+    }
+
+    if(iteration < STOP_ITERATION) {
+
+        val.value.str = (char *) input_values[iteration];
+        printf("enum in <= %s iteration %d \n", val.value.str, iteration);
+        vpi_put_value(enum_in_handle, &val, NULL, vpiNoDelay);
+        register_cb(delay_ro_cb, cbAfterDelay, 1);
+    } else {
+        vpi_control(vpiFinish, 0);
+    }
+
+    iteration++;
+    return 0;
+}
+
+static PLI_INT32 ro_cb(p_cb_data data){
+    (void) data;
+    register_cb(delay_rw_cb, cbAfterDelay, 0);
+    return 0;
+}
+
+static PLI_INT32 delay_rw_cb(p_cb_data data){
+    (void) data;
+    register_cb(rw_cb, cbReadWriteSynch, 0);
+    return 0;
+}
+
+static PLI_INT32 delay_ro_cb(p_cb_data data){
+    (void) data;
+    register_cb(ro_cb, cbReadOnlySynch, 0);
+    return 0;
+}
+
+void (*vlog_startup_routines[]) () = {
+    entry_point_cb,
+    0
+};