feat: Add syscalls imports for Linux

std/linux/syscalls.sn

@@ -1,53 +1,6 @@
-#[target_os = "linux"]
-fn syscall1<T1>(num: i32, arg1: T1) : i32 {
-  let res: i32;
-
-  asm("int $$0x80"
-      : "={ax}"(res),
-        "+{bx}"(arg1)
-      : "{ax}"(num)
-      : "cc", "memory");
-
-  return res;
-}
-
-#[target_os = "linux"]
-fn syscall2<T1, T2>(num: i32, arg1: T1, arg2: T2) : i32 {
-  let res: i32;
-
-  asm("int $$0x80"
-      : "={ax}"(res),
-        "+{bx}"(arg1),
-        "+{cx}"(arg2)
-      : "{ax}"(num)
-      : "cc", "memory");
-
-  return res;
-}
-
-#[target_os = "linux"]
-fn syscall3<T1, T2, T3>(num: i32, arg1: T1, arg2: T2, arg3: T3) : i32 {
-  let res: i32;
-
-  asm("int $$0x80"
-      : "={ax}"(res),
-        "+{bx}"(arg1),
-        "+{cx}"(arg2),
-        "+{dx}"(arg3)
-      : "{ax}"(num)
-      : "cc", "memory");
-
-  return res;
-}
-
-#[target_os = "linux"]
-#[target_arch = "i386"]
-fn exit(code: i32) {
-  syscall1<i32, i32>(1, code);
-}
-
-#[target_os = "linux"]
-#[target_arch = "i386"]
-fn write(fd: u32, buf: void*, count: u64) {
-  syscall3<u32, void*, u64>(4, fd, buf, count);
+namespace linux {
+  namespace syscalls {
+    import "./i386/syscalls"
+    import "./x86_64/syscalls"
+  }
 }