From 05f5bf4dcd588f87499a490f0f1e368a308db8ec Mon Sep 17 00:00:00 2001
From: g1n <g1n@ttm.sh>
Date: Fri, 8 Oct 2021 16:56:50 +0300
Subject: [PATCH] Add check if input file specified and if it exists

---
 src/6502/main.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/6502/main.c b/src/6502/main.c
index 4608992..a0fd182 100644
--- a/src/6502/main.c
+++ b/src/6502/main.c
@@ -159,9 +159,16 @@ void execute() {
 	}
 }
 int main(int argc, char *argv[]) {
+        if (argc < 2) {
+	  printf("%s: No input file specified\n", "yemu");
+	  return 1;
+	}
 	reset();
-	// TODO make loading from rom
 	FILE *infile = fopen(argv[1], "rb");
+	if (infile == NULL) {
+	  perror("yemu");
+	  return 1;
+	}
 	char ch;
 	int pos = 0;
 	while (1) { // FIXME