add basic alloc

kernel/Cargo.lock

@@ -263,6 +263,8 @@ dependencies = [
  "uart_16550 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "ucore-memory 0.1.0",
  "ucore-process 0.1.0",
+ "usize_conversions 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ux 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "volatile 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "x86_64 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "xmas-elf 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",

kernel/Cargo.toml

@@ -33,6 +33,10 @@ ucore-memory = { path = "../crate/memory" }
 ucore-process = { path = "../crate/process" }
 simple-filesystem = { git = "https://github.com/wangrunji0408/SimpleFileSystem-Rust" }
 
+[dependencies.ux]
+default-features = false
+version = "0.1.0"
+
 [target.'cfg(target_arch = "x86_64")'.dependencies]
 bootloader = "0.3"
 x86_64 = "0.2.11"
@@ -45,6 +49,7 @@ bbl = { path = "../crate/bbl" }
 
 [target.'cfg(target_arch = "aarch64")'.dependencies]
 cortex-a = "2.2.1"
+usize_conversions = "0.2.0"
 atags = { path = "../crate/atags" }
 bcm2837 = { path = "../crate/bcm2837", features = ["use_generic_timer"] }
 

kernel/src/arch/aarch64/mod.rs

@@ -1,6 +1,9 @@
 //! Entrance and initialization for aarch64.
 
 extern crate atags;
+extern crate bitflags;
+extern crate usize_conversions;
+pub extern crate ux;
 
 pub mod io;
 pub mod paging;
@@ -26,19 +29,19 @@ pub extern "C" fn rust_main() -> ! {
     memory::init();
     println!("memory init over");
 
-    let mut v = vec![];
-    for i in 0..1000 {
-        v.push(i);
-        println!("{:?}", v);
-    }
+    //let mut v = vec![];
+    //for i in 0..1000 {
+    //    v.push(i);
+    //    println!("{:?}", v);
+    //}
     
     // First init log mod, so that we can print log info.
     // FIXME
-    // ::logging::init();
+    ::logging::init();
     interrupt::init();
     timer::init();
 
-    // ::process::init();
+    ::process::init();
 
     unsafe { interrupt::enable(); }
 

kernel/src/arch/aarch64/paging.rs

@@ -6,6 +6,9 @@ use ucore_memory::paging::*;
 type VirtAddr=usize;
 type PhysAddr=usize;
 
+use alloc::alloc::{alloc, Layout};
+use memory::alloc_stack;
+
 /// TODO
 pub struct ActivePageTable {
     // TODO
@@ -152,9 +155,30 @@ impl Entry for PageEntry {
 
 }
 
+#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord)]
+pub struct MockFrame(PhysAddr);
+
+impl MockFrame {
+    pub fn of_addr(addr: PhysAddr) -> Self {
+        MockFrame(addr)
+    }
+    pub fn start_address(&self) -> PhysAddr {
+        unimplemented!()
+    }
+    pub fn p2_index(&self) -> usize {
+        unimplemented!()
+    }
+    pub fn p1_index(&self) -> usize {
+        unimplemented!()
+    }
+    pub fn number(&self) -> usize {
+        unimplemented!()
+    }
+}
+
 /// TODO
 pub struct InactivePageTable0 {
-    // TODO
+    p4_frame: MockFrame,
 }
 
 /// TODO
@@ -162,11 +186,14 @@ impl InactivePageTable for InactivePageTable0 {
     type Active = ActivePageTable;
 
     fn new() -> Self {
-        unimplemented!()
+        unsafe {let layout = Layout::new::<u64>();
+        let ptr = alloc(layout);
+        let frame = MockFrame::of_addr(*ptr as usize);
+        InactivePageTable0 { p4_frame: frame }}
     }
 
     fn new_bare() -> Self {
-        unimplemented!()
+        Self::new()
     }
 
     fn edit(&mut self, f: impl FnOnce(&mut Self::Active)) {
@@ -174,15 +201,15 @@ impl InactivePageTable for InactivePageTable0 {
     }
 
     unsafe fn activate(&self) {
-        unimplemented!()
+        
     }
 
     unsafe fn with(&self, f: impl FnOnce()) {
-        unimplemented!()
+        
     }
 
     fn token(&self) -> usize {
-        unimplemented!()
+        0
     }
 
     fn alloc_frame() -> Option<PhysAddr> {
@@ -190,10 +217,10 @@ impl InactivePageTable for InactivePageTable0 {
     }
 
     fn dealloc_frame(target: PhysAddr) {
-        unimplemented!()
+        
     }
 
     fn alloc_stack() -> Stack {
-        unimplemented!()
+        alloc_stack()
     }
 }

kernel/src/lib.rs

@@ -9,6 +9,7 @@
 #![feature(panic_info_message)]
 #![feature(global_asm)]
 #![feature(compiler_builtins_lib)]
+#![feature(try_from)]
 #![no_std]
 
 
@@ -33,6 +34,7 @@ extern crate volatile;
 #[cfg(target_arch = "x86_64")]
 extern crate x86_64;
 extern crate xmas_elf;
+extern crate usize_conversions;
 
 use linked_list_allocator::LockedHeap;