Factor out cyclotron initialization

Author: hansungk

src/main/resources/vsrc/Cyclotron.vh

@@ -24,6 +24,12 @@ import "DPI-C" function cyclotron_difftest_reg(
   input int  trace_regs_2_data[NUM_LANES]
 );
 
+task automatic cyclotron_init_task();
+  string elffile;
+  elffile = vpi_get_binary();
+  cyclotron_init(elffile);
+endtask
+
 import "DPI-C" function void cyclotron_imem(
   output bit     imem_req_ready,
   input  bit     imem_req_valid,
@@ -38,4 +44,3 @@ import "DPI-C" function void cyclotron_imem(
   output byte    imem_resp_bits_tag,
   output longint imem_resp_bits_data
 );
-

src/main/resources/vsrc/CyclotronBackend.v

@@ -376,9 +376,9 @@ module CyclotronBackendBlackBox #(
   longint __imem_resp_bits_data;
 
   // initialize model at the rtl sim start
-  initial begin
-    cyclotron_init();
-  end
+  // use BINARY= argument (i.e. first non-plusarg argument) as the Cyclotron
+  // ELF
+  initial cyclotron_init_task();
 
   // TODO: simulate backpressure
 

src/main/resources/vsrc/CyclotronDiffTest.v

@@ -53,15 +53,10 @@ module CyclotronDiffTestBlackBox #(
 
   bit __in_finished;
 
-  string elffile;
-
   // initialize model at the rtl sim start
   // use BINARY= argument (i.e. first non-plusarg argument) as the Cyclotron
   // ELF
-  initial begin
-    elffile = vpi_get_binary();
-    cyclotron_init(elffile);
-  end
+  initial cyclotron_init_task();
 
   // connect regtrace signals
   assign __out_trace_valid = trace_valid;

src/main/resources/vsrc/CyclotronFrontend.v

@@ -102,15 +102,10 @@ module CyclotronFrontendBlackBox #(
 
   bit __in_finished;
 
-  string elffile;
-
   // initialize model at the rtl sim start
   // use BINARY= argument (i.e. first non-plusarg argument) as the Cyclotron
   // ELF
-  initial begin
-    elffile = vpi_get_binary();
-    cyclotron_init(elffile);
-  end
+  initial cyclotron_init_task();
 
   always @(negedge clock) begin
     cyclotron_imem(