Smp (#23)

* Fire up multiple processors

* Use IPIs to wake up secondary processors

* Much better exception information

* Modifications to show more information on fault

* WIP: Use real libstd

* Add TLS (not complete)

* Add random function, export getpid, cleanup

* Do not spin APs until new context

* Update rust

* Update rust

* Use rd/wrfsbase

* Implement TLS

* Implement compiler builtins and update rust

* Update rust

* Back to Redox libstd

* Update rust

libstd_real/panic_unwind/src/lib.rs

@@ -0,0 +1,27 @@
+#![no_std]
+#![feature(core_intrinsics)]
+#![feature(lang_items)]
+#![feature(panic_runtime)]
+#![panic_runtime]
+
+#[no_mangle]
+pub unsafe extern fn __rust_maybe_catch_panic(f: fn(*mut u8), data: *mut u8,
+                                              _data_ptr: *mut usize, _vtable_ptr: *mut usize) -> u32 {
+    f(data);
+    0
+}
+
+#[no_mangle]
+pub unsafe extern fn __rust_start_panic(_data: usize, _vtable: usize) -> u32 {
+    core::intrinsics::abort();
+}
+
+#[lang = "eh_personality"]
+pub extern fn eh_personality() {}
+
+#[allow(non_snake_case)]
+#[no_mangle]
+/// Required to handle panics
+pub unsafe extern "C" fn _Unwind_Resume() -> ! {
+    core::intrinsics::abort();
+}