Make EFI port primary

core/src/main.c

@@ -0,0 +1,50 @@
+#include "main.h" 
+#include "efi.h" 
+#include "duktape.h"
+
+duk_context *ctx;
+EFI_SYSTEM_TABLE* systemTable;
+
+void halt() {
+  for (;;) {}
+}
+
+void ascii_to_utf16(const char *ascii, CHAR16 *utf16) {
+  while (*ascii) {
+    *utf16++ = (CHAR16)*ascii++;
+  }
+  *utf16 = 0;
+}
+
+duk_ret_t native_log(duk_context *ctx) {
+  CHAR16 buffer[256];
+  ascii_to_utf16(duk_safe_to_string(ctx, 0), buffer);
+  systemTable->ConOut->OutputString(systemTable->ConOut, buffer);
+  
+  return 0;
+}
+
+int kernel_main(EFI_SYSTEM_TABLE *st) {
+  systemTable = st;
+  ctx = duk_create_heap_default();
+
+  duk_push_c_function(ctx, native_log, 1);
+  duk_put_global_string(ctx, "$log");
+
+  duk_push_string(ctx, "var a = 1 + 2; $log(a);");
+  duk_int_t returnCode = duk_peval(ctx);
+
+  if (returnCode != 0)
+  {
+    duk_safe_to_stacktrace(ctx, -1);
+    CHAR16 buffer[256];
+    ascii_to_utf16(duk_safe_to_string(ctx, -1), buffer);
+    systemTable->ConOut->OutputString(systemTable->ConOut, buffer);
+  }
+
+  duk_pop(ctx);
+
+  halt();
+
+  return 0;
+}