Harden VM Mem

1 files changed, 17 insertions, 0 deletions

diff --git a/pkg/lang/vm/mem/errors.go b/pkg/lang/vm/mem/errors.go
new file mode 100644
index 0000000..e7a3f8f
--- /dev/null
+++ b/pkg/lang/vm/mem/errors.go
@@ -0,0 +1,17 @@
+package mem
+
+import "errors"
+
+var (
+	ErrMemOverflow = errors.New("memory overflow, cannot allocate more than 10000 memory cells")
+
+	ErrFatalNonFreeCell = errors.New("non-free cell marked as free")
+)
+
+type ErrInvalidMemAccess struct {
+	Ptr Ptr
+}
+
+func (e ErrInvalidMemAccess) Error() string {
+	return "invalid memory access at " + e.Ptr.String()
+}