Merge branch 'basic-floating-point-support' into 'aarch64-rebase'

Basic floating point support

See merge request redox-os/syscall!62

src/arch/aarch64.rs

@@ -43,69 +43,6 @@ syscall! {
     syscall5(a, b, c, d, e, f,);
 }
 
-/*
-pub unsafe fn syscall0(mut a: usize) -> Result<usize> {
-    llvm_asm!("svc   0"
-          : "={x0}"(a)
-          : "{x8}"(a)
-          : "x0", "x8"
-          : "volatile");
-
-    Error::demux(a)
-}
-
-pub unsafe fn syscall1(mut a: usize, b: usize) -> Result<usize> {
-    llvm_asm!("svc   0"
-          : "={x0}"(a)
-          : "{x8}"(a), "{x0}"(b)
-          : "x0", "x8"
-          : "volatile");
-
-    Error::demux(a)
-}
-
-pub unsafe fn syscall2(mut a: usize, b: usize, c: usize) -> Result<usize> {
-    llvm_asm!("svc   0"
-          : "={x0}"(a)
-          : "{x8}"(a), "{x0}"(b), "{x1}"(c)
-          : "x0", "x1", "x8"
-          : "volatile");
-
-    Error::demux(a)
-}
-
-pub unsafe fn syscall3(mut a: usize, b: usize, c: usize, d: usize) -> Result<usize> {
-    llvm_asm!("svc   0"
-          : "={x0}"(a)
-          : "{x8}"(a), "{x0}"(b), "{x1}"(c), "{x2}"(d)
-          : "x0", "x1", "x2", "x8"
-          : "volatile");
-
-    Error::demux(a)
-}
-
-pub unsafe fn syscall4(mut a: usize, b: usize, c: usize, d: usize, e: usize) -> Result<usize> {
-    llvm_asm!("svc   0"
-          : "={x0}"(a)
-          : "{x8}"(a), "{x0}"(b), "{x1}"(c), "{x2}"(d), "{x3}"(e)
-          : "x0", "x1", "x2", "x3", "x8"
-          : "volatile");
-
-    Error::demux(a)
-}
-
-pub unsafe fn syscall5(mut a: usize, b: usize, c: usize, d: usize, e: usize, f: usize)
-    -> Result<usize> {
-    llvm_asm!("svc   0"
-          : "={x0}"(a)
-          : "{x8}"(a), "{x0}"(b), "{x1}"(c), "{x2}"(d), "{x3}"(e), "{x4}"(f)
-          : "x0", "x1", "x2", "x3", "x4", "x8"
-          : "volatile");
-
-    Error::demux(a)
-}
-*/
-
 #[derive(Copy, Clone, Debug, Default)]
 #[repr(C)]
 pub struct IntRegisters {
@@ -166,10 +103,13 @@ impl DerefMut for IntRegisters {
     }
 }
 
-//TODO
 #[derive(Clone, Copy, Debug, Default)]
 #[repr(packed)]
-pub struct FloatRegisters;
+pub struct FloatRegisters {
+    pub fp_simd_regs: [u128; 32],
+    pub fpsr: u32,
+    pub fpcr: u32
+}
 
 impl Deref for FloatRegisters {
     type Target = [u8];