implement a simple uart + show that kernel test works

1 files changed, 5 insertions, 5 deletions

diff --git a/src/mem.rs b/src/mem.rs
index 8d0e9dc..7458c67 100644
--- a/src/mem.rs
+++ b/src/mem.rs
@@ -15,12 +15,12 @@ impl Memory {
     pub fn new(size: usize) -> Memory {
         let mut pages: Vec<Page> = Vec::with_capacity(size / PAGE_SIZE);
         for i in 0..size / PAGE_SIZE {
-            pages[i] = Page {
+            pages.push(Page {
                 virtual_addr: usize::MAX,
                 real_addr: i * PAGE_SIZE,
                 permission: 0,
                 allocated: 0,
-            }
+            });
         }
         Memory {
             memory: vec![0u8; size].into_boxed_slice(),
@@ -93,8 +93,8 @@ impl Memory {
         address: usize,
         size: usize,
         permission: usize,
-    ) -> Result<Box<[u8]>, ()> {
-        let mut ret = [];
+    ) -> Result<Vec<u8>, ()> {
+        let mut ret = vec![0; size];
         for addr in address..address + size {
             if let Ok(byte) = self.read(addr, permission) {
                 ret[addr - address] = byte;
@@ -102,7 +102,7 @@ impl Memory {
                 return Err(());
             }
         }
-        Ok(Box::new(ret))
+        Ok(ret)
     }
 
     pub fn write_multiple_bytes(