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/libc/src/funcs.rs

@@ -0,0 +1,19 @@
+use super::{c_char, size_t};
+
+pub unsafe extern fn strlen(ptr: *const c_char) -> size_t {
+    let mut i: size_t = 0;
+    while *ptr.offset(i as isize) != 0 {
+        i += 1;
+    }
+    i
+}
+
+pub unsafe extern fn random() -> u64 {
+    let rand;
+    asm!("rdrand rax"
+        : "={rax}"(rand)
+        :
+        :
+        : "intel", "volatile");
+    rand
+}