Add missing arch guards to barrier funcs

Author: andre-richter

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cortex-a"
-version = "5.1.1"
+version = "5.1.2"
 authors = ["Andre Richter <[email protected]>"]
 description = "Low level access to Cortex-A processors"
 homepage = "https://github.com/rust-embedded/cortex-a"

Makefile

@@ -2,12 +2,15 @@ TARGET := aarch64-unknown-none-softfloat
 
 default:
 	cargo build --target $(TARGET)
+	cargo build
 
 clippy:
 	cargo clippy --target $(TARGET)
+	cargo clippy
 
 check:
 	cargo check --target $(TARGET)
+	cargo check
 
 fmt:
 	cargo fmt

src/barrier.rs

@@ -29,13 +29,29 @@ macro_rules! dmb_dsb {
         impl sealed::Dmb for $A {
             #[inline(always)]
             unsafe fn __dmb(&self) {
-                asm!(concat!("DMB ", stringify!($A)), options(nostack))
+                match () {
+                    #[cfg(target_arch = "aarch64")]
+                    () => {
+                        asm!(concat!("DMB ", stringify!($A)), options(nostack))
+                    }
+
+                    #[cfg(not(target_arch = "aarch64"))]
+                    () => unimplemented!(),
+                }
             }
         }
         impl sealed::Dsb for $A {
             #[inline(always)]
             unsafe fn __dsb(&self) {
-                asm!(concat!("DSB ", stringify!($A)), options(nostack))
+                match () {
+                    #[cfg(target_arch = "aarch64")]
+                    () => {
+                        asm!(concat!("DSB ", stringify!($A)), options(nostack))
+                    }
+
+                    #[cfg(not(target_arch = "aarch64"))]
+                    () => unimplemented!(),
+                }
             }
         }
     };
@@ -52,7 +68,15 @@ dmb_dsb!(SY);
 impl sealed::Isb for SY {
     #[inline(always)]
     unsafe fn __isb(&self) {
-        asm!("ISB SY", options(nostack))
+        match () {
+            #[cfg(target_arch = "aarch64")]
+            () => {
+                asm!("ISB SY", options(nostack))
+            }
+
+            #[cfg(not(target_arch = "aarch64"))]
+            () => unimplemented!(),
+        }
     }
 }