fix clear bss when load user program. 'sh' works!
@@ -80,12 +80,11 @@ impl ContextImpl {
let virt_addr = ph.virtual_addr() as usize;
let offset = ph.offset() as usize;
let file_size = ph.file_size() as usize;
- if file_size == 0 {
- return;
- }
- use core::slice;
- let target = unsafe { slice::from_raw_parts_mut(virt_addr as *mut u8, file_size) };
- target.copy_from_slice(&data[offset..offset + file_size]);
+ let mem_size = ph.mem_size() as usize;
+
+ let target = unsafe { ::core::slice::from_raw_parts_mut(virt_addr as *mut u8, mem_size) };
+ target[..file_size].copy_from_slice(&data[offset..offset + file_size]);
+ target[file_size..].iter_mut().for_each(|x| *x = 0);
}
ustack_top = push_args_at_stack(args, ustack_top);
});
