Added 'trace' option

src/cpu/rv32cpu.c

@@ -676,8 +676,11 @@ void cpu_loop(rv32_cpu_t* cpu)
 		instruction_t instruction;
 		cpu_decode(raw_instruction, &instruction);
 
-		printf("0x%x: ", cpu->pc);
+		if(trace)
-		cpu_print_instruction(&instruction);
+		{
+			printf("0x%x: ", cpu->pc);
+			cpu_print_instruction(&instruction);
+		}
 
 		// Execute
 		cpu_execute(cpu, &instruction);

src/option.c

@@ -8,6 +8,7 @@
 uint64_t memory_size = 512 * 1024 * 1024;
 char* file_path;
 bool gdbstub = false;
+bool trace = false;
 
 static void print_usage();
 static void print_help();
@@ -100,6 +101,11 @@ void parse_options(int argc, char** argv)
 					gdbstub = true;
 					break;
 				}
+				case 't':
+				{
+					trace = true;
+					break;
+				}
 				default:
 				{
 					fprintf(stderr, "Error: Unknown short option -%c\n", argv[i][k]);
@@ -161,6 +167,11 @@ static int parse_long_option(char* str, char* argq)
 		gdbstub = true;
 		return 0;
 	}
+	else if(strcmp(str, "trace") == 0)
+	{
+		trace = true;
+		return 0;
+	}
 	else
 	{
 		fprintf(stderr, "Error: Unknown long option " OPTION_SEPARATOR OPTION_SEPARATOR "%s\n", str);
@@ -181,6 +192,7 @@ static void print_help()
 	printf("  " OPTION_SEPARATOR "h, " OPTION_SEPARATOR "?, --help\t\tPrint this help message\n");
 	printf("  " OPTION_SEPARATOR "v, --version\t\t\tPrint version information\n");
 	printf("  " OPTION_SEPARATOR "m, --memory\t\t\tSet the simulated memory size, in MiB (max 4096)\n");
+	printf("  " OPTION_SEPARATOR "t, --trace\t\t\tTrace executed instructions in stdout\n");
 	printf("  " OPTION_SEPARATOR "s, --gdb-stub\t\tLaunch a gdb stub server (remote gdb debugging)\n");
 }
 

src/vriscv.h

@@ -15,6 +15,7 @@ extern char* CURRENT_NAME;
 extern size_t memory_size;
 extern char* file_path;
 extern bool gdbstub;
+extern bool trace;
 void parse_options(int argc, char** argv);
 
 #endif