Add arm syscalls

Author: jackpot51

src/libstd/sys/redox/syscall/arch/arm.rs

@@ -0,0 +1,72 @@
+use super::error::{Error, Result};
+
+pub unsafe fn syscall0(mut a: usize) -> Result<usize> {
+    asm!("swi $$0"
+        : "={r0}"(a)
+        : "{r7}"(a)
+        : "memory"
+        : "volatile");
+
+    Error::demux(a)
+}
+
+pub unsafe fn syscall1(mut a: usize, b: usize) -> Result<usize> {
+    asm!("swi $$0"
+        : "={r0}"(a)
+        : "{r7}"(a), "{r0}"(b)
+        : "memory"
+        : "volatile");
+
+    Error::demux(a)
+}
+
+// Clobbers all registers - special for clone
+pub unsafe fn syscall1_clobber(mut a: usize, b: usize) -> Result<usize> {
+    asm!("swi $$0"
+        : "={r0}"(a)
+        : "{r7}"(a), "{r0}"(b)
+        : "memory", "r0", "r1", "r2", "r3", "r4"
+        : "volatile");
+
+    Error::demux(a)
+}
+
+pub unsafe fn syscall2(mut a: usize, b: usize, c: usize) -> Result<usize> {
+    asm!("swi $$0"
+        : "={r0}"(a)
+        : "{r7}"(a), "{r0}"(b), "{r1}"(c)
+        : "memory"
+        : "volatile");
+
+    Error::demux(a)
+}
+
+pub unsafe fn syscall3(mut a: usize, b: usize, c: usize, d: usize) -> Result<usize> {
+    asm!("swi $$0"
+        : "={r0}"(a)
+        : "{r7}"(a), "{r0}"(b), "{r1}"(c), "{r2}"(d)
+        : "memory"
+        : "volatile");
+
+    Error::demux(a)
+}
+
+pub unsafe fn syscall4(mut a: usize, b: usize, c: usize, d: usize, e: usize) -> Result<usize> {
+    asm!("swi $$0"
+        : "={r0}"(a)
+        : "{r7}"(a), "{r0}"(b), "{r1}"(c), "{r2}"(d), "{r3}"(e)
+        : "memory"
+        : "volatile");
+
+    Error::demux(a)
+}
+
+pub unsafe fn syscall5(mut a: usize, b: usize, c: usize, d: usize, e: usize, f: usize) -> Result<usize> {
+    asm!("swi $$0"
+        : "={r0}"(a)
+        : "{r7}"(a), "{r0}"(b), "{r1}"(c), "{r2}"(d), "{r3}"(e), "{r4}"(f)
+        : "memory"
+        : "volatile");
+
+    Error::demux(a)
+}

src/libstd/sys/redox/syscall/x86.rs renamed to src/libstd/sys/redox/syscall/arch/x86.rs

@@ -6,12 +6,16 @@ pub use self::flag::*;
 pub use self::number::*;
 pub use self::scheme::*;
 
+#[cfg(target_arch = "arm")]
+#[path="arch/arm.rs"]
+mod arch;
+
 #[cfg(target_arch = "x86")]
-#[path="x86.rs"]
+#[path="arch/x86.rs"]
 mod arch;
 
 #[cfg(target_arch = "x86_64")]
-#[path="x86_64.rs"]
+#[path="arch/x86_64.rs"]
 mod arch;
 
 /// Function definitions