FPU: moved enable function to zc706

libcortex_a9/src/fpu.rs

@@ -0,0 +1,14 @@
+/// Enable FPU in the current core.
+pub fn enable_fpu() {
+    unsafe {
+        llvm_asm!("
+            mrc p15, 0, r1, c1, c0, 2
+            orr r1, r1, (0b1111<<20)
+            mcr p15, 0, r1, c1, c0, 2
+
+            vmrs r1, fpexc
+            orr r1, r1, (1<<30)
+            vmsr fpexc, r1
+            ":::"r1");
+    }
+}

libcortex_a9/src/lib.rs

@@ -11,6 +11,8 @@ pub mod mmu;
 pub mod mutex;
 pub mod sync_channel;
 mod uncached;
+mod fpu;
 pub use uncached::UncachedSlice;
+pub use fpu::enable_fpu;
 
 global_asm!(include_str!("exceptions.s"));