Implement TLS scoped keys, compiler builtins

Author: jackpot51

src/libstd/lib.rs

@@ -322,7 +322,7 @@ extern crate unwind;
 extern crate alloc_system;
 
 // compiler-rt intrinsics
-//REDOX TODO extern crate compiler_builtins;
+extern crate compiler_builtins;
 
 // Make std testable by not duplicating lang items and other globals. See #2912
 #[cfg(test)] extern crate std as realstd;

src/libstd/sys/redox/thread_local.rs

@@ -17,10 +17,10 @@ pub type Key = usize;
 
 type Dtor = unsafe extern fn(*mut u8);
 
-//TODO: Implement this properly
-
+#[thread_local]
 static mut NEXT_KEY: Key = 0;
 
+#[thread_local]
 static mut LOCALS: *mut BTreeMap<Key, (*mut u8, Option<Dtor>)> = ptr::null_mut();
 
 unsafe fn locals() -> &'static mut BTreeMap<Key, (*mut u8, Option<Dtor>)> {