msim done (ish)

1 files changed, 71 insertions, 3 deletions

diff --git a/msim/main.c b/msim/main.c
index 7afb34e..f8a0999 100644
--- a/msim/main.c
+++ b/msim/main.c
@@ -1,5 +1,73 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <merror.h>
+#include <signal.h>
 
-int main(void) {
-	// NOT YET IMPLEMENTED
-	return 1;
+#include "fault.h"
+#include "sim.h"
+
+static void help(void) {
+	printf("usage: msim [options] executable\n\n");
+	printf("options:\n");
+	printf("\t-h\t\tprints this help messaage\n");
+	printf("\t-c\t\tdisable runtime memory checks (allows segfault)\n");
+	printf("\t-d\t\truns the debugger\n");
+}
+
+int main(int argc, char **argv) {
+
+	struct simulator sim;
+	struct simulator_args args = {
+		.executable = NULL,
+		.debug = false,
+		.memchk = true,
+	};
+
+	int c;
+
+	while ((c = getopt(argc, argv, "hcd")) != 1) {
+		switch (c) {
+		case 'h':
+			help();
+			return M_SUCCESS;
+		case 'c':
+			args.memchk = false;
+			break;
+		case 'd':
+			args.debug = true;
+			break;
+		case '?':
+			return M_ERROR;
+		default:
+			goto next;
+		}
+	}
+
+next:
+	if (optind < argc - 1) {
+		ERROR("too many executables passed");
+		return M_ERROR;
+	}
+
+	if (optind >= argc) {
+		ERROR("no executable passed");
+		return M_ERROR;
+	}
+
+	/// set file name
+	args.executable = argv[optind];
+
+	/// create handlers
+	init_handlers(&sim);
+
+	/// init
+	if (sim_init(&sim, &args))
+		return M_ERROR;
+
+	/* _Noreturn */
+	if (args.debug)
+		sim_debug(&sim);
+	else
+		sim_run(&sim);
 }