Fix build on aarch64

Cargo.toml

@@ -7,6 +7,8 @@ edition = "2018"
 [dependencies]
 libc = "0.2"
 redox_syscall = { git = "https://gitlab.redox-os.org/redox-os/syscall.git" }
-strace = { git = "https://gitlab.redox-os.org/redox-os/strace-redox", default-features = false }
+#strace = { git = "https://gitlab.redox-os.org/redox-os/strace-redox", default-features = false }
-x86 = "0.47.0"
 #strace = { path = "../../strace/source", default-features = false }
+
+[target.'cfg(target_arch = "x86_64")'.dependencies]
+x86 = "0.47.0"

src/main.rs

@@ -3,6 +3,8 @@
 
 mod clone_grant_using_fmap;
 
+const PAGE_SIZE: usize = 4096;
+
 fn e<T, E: ToString>(error: Result<T, E>) -> Result<T, String> {
     error.map_err(|e| e.to_string())
 }
@@ -45,9 +47,6 @@ fn create_test() -> Result<(), String> {
     Ok(())
 }
 
-#[cfg(target_arch = "x86_64")]
-const PAGE_SIZE: usize = 4096;
-
 fn page_fault_test() -> Result<(), String> {
     use std::sync::atomic::{AtomicUsize, compiler_fence, Ordering};
 
@@ -114,6 +113,7 @@ fn page_fault_test() -> Result<(), String> {
     Ok(())
 }
 
+#[cfg(target_arch = "x86_64")]
 fn switch_test() -> Result<(), String> {
     use std::thread;
     use x86::time::rdtscp;
@@ -246,6 +246,7 @@ fn main() {
     let mut tests: BTreeMap<&'static str, fn() -> Result<(), String>> = BTreeMap::new();
     tests.insert("create_test", create_test);
     tests.insert("page_fault", page_fault_test);
+    #[cfg(target_arch = "x86_64")]
     tests.insert("switch", switch_test);
     tests.insert("tcp_fin", tcp_fin_test);
     tests.insert("thread", thread_test);