From fb4dca6c42147cd1ce082636640b50b5fac8826f Mon Sep 17 00:00:00 2001
From: Mistivia <i@mistivia.com>
Date: Wed, 4 Dec 2024 21:12:39 +0800
Subject: finish fvm

---
 src/fvm.c  |  1 +
 src/main.c | 28 ++++++++++++++++++++++++++--
 2 files changed, 27 insertions(+), 2 deletions(-)

diff --git a/src/fvm.c b/src/fvm.c
index 6326dc8..db4b04b 100644
--- a/src/fvm.c
+++ b/src/fvm.c
@@ -424,6 +424,7 @@ int64_t fvm_execute(struct fvm *vm) {
       return vm->rv;
     default:
       fprintf(stderr, "unknown opcode.\n");
+      exit(-1);
       break; 
     }
   }
diff --git a/src/main.c b/src/main.c
index 62742b5..21b31c2 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,5 +1,29 @@
+#include <stdio.h>
+#include <stdlib.h>
+
 #include "fvm.h"
 
-int main() {
-    return 0;
+int main(int argc, char **argv) {
+  struct fvm vm;
+  if (argc < 2) {
+    fprintf(stderr, "Usage: fvm <program-file>\n");
+    return -1;
+  }
+  FILE* fp = fopen(argv[1], "rb");
+  if (fp == NULL) {
+    fprintf(stderr, "Failed to open file.\n");
+    return -1;
+  }
+  fseek(fp, 0, SEEK_END);
+  int64_t flen = ftell(fp);
+  char *code = malloc(flen);
+  fseek(fp, 0, SEEK_SET);
+  int n = fread(code, 1, flen, fp);
+  if (n != flen) {
+    fprintf(stderr, "Failed to read from file.\n");
+    exit(-1);
+  }
+  fvm_init(&vm, code, 2*1024*1024);
+  fvm_execute(&vm);
+  return vm.rv;
 }
-- 
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