From 64ae39295dccbd6401dc19f761a02fe43abf178c Mon Sep 17 00:00:00 2001
From: Erin <erin@erindesu.cz>
Date: Wed, 26 Jul 2023 20:49:23 +0200
Subject: [PATCH] Added some comments

---
 hbvm/src/mem/bmc.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hbvm/src/mem/bmc.rs b/hbvm/src/mem/bmc.rs
index fd43d733..7c4551ae 100644
--- a/hbvm/src/mem/bmc.rs
+++ b/hbvm/src/mem/bmc.rs
@@ -47,6 +47,7 @@ impl BlockCopier {
         // Safety: Assuming uninit of array of MaybeUninit is sound
         let mut buf = AlignedBuf(MaybeUninit::uninit().assume_init());
 
+        // We have at least one buffer size to copy
         if self.n_buffers != 0 {
             if let Err(e) = act(
                 memory,
@@ -59,6 +60,9 @@ impl BlockCopier {
                 return Poll::Ready(Err(e));
             }
 
+            // Bump source and destination address
+            //
+            // If we are over the address space, bail.
             match self.src.checked_add(BUF_SIZE as u64) {
                 Some(n) => self.src = n,
                 None => return Poll::Ready(Err(BlkCopyError::OutOfBounds)),