simulation framework refactoring

sim/rtlsim/main.cpp

@@ -0,0 +1,87 @@
+#include <iostream>
+#include <fstream>
+#include <iomanip>
+#include <unistd.h>
+#include <unistd.h>
+#include <util.h>
+#include <mem.h>
+#include "simulator.h"
+
+using namespace vortex;
+
+static void show_usage() {
+   std::cout << "Usage: [-r] [-h: help] programs.." << std::endl;
+}
+
+bool riscv_test = false;
+std::vector<const char*> programs;
+
+static void parse_args(int argc, char **argv) {
+  	int c;
+  	while ((c = getopt(argc, argv, "rh?")) != -1) {
+    	switch (c) {
+		case 'r':
+			riscv_test = true;
+			break;
+    	case 'h':
+    	case '?':
+      		show_usage();
+      		exit(0);
+    		break;
+    	default:
+      		show_usage();
+      		exit(-1);
+    	}
+  	}	
+
+	for (int i = optind; i < argc; ++i) {
+		programs.push_back(argv[i]);	
+	}
+}
+
+int main(int argc, char **argv) {
+
+	int exitcode = 0;
+	bool failed = false;
+	
+	parse_args(argc, argv);
+
+	for (auto program : programs) {
+		std::cout << "Running " << program << "..." << std::endl;
+
+		vortex::RAM ram((1<<12), (1<<20));
+		vortex::Simulator simulator;
+		simulator.attach_ram(&ram);
+
+		std::string program_ext(fileExtension(program));
+		if (program_ext == "bin") {
+			ram.loadBinImage(program, STARTUP_ADDR);
+		} else if (program_ext == "hex") {
+			ram.loadHexImage(program);
+		} else {
+			std::cout << "*** error: only *.bin or *.hex images supported." << std::endl;
+			return -1;
+		}
+
+		exitcode = simulator.run();
+		
+		if (riscv_test) {
+			if (1 == exitcode) {
+				std::cout << "Passed" << std::endl;
+			} else {
+				std::cout << "Failed: exitcode=" << exitcode << std::endl;
+				failed = true;
+			}
+		} else {
+			if (exitcode != 0) {
+				std::cout << "*** error: exitcode=" << exitcode << std::endl;
+				failed = true;
+			}
+		}	
+		
+		if (failed)
+			break;
+	}
+
+	return failed ? exitcode : 0;
+}