Merge pull request #73 from xxuejie/only-alter-panic-handler-in-riscv…

…64-target

fix: Only alter panic handler in riscv64 target

src/entry.rs

@@ -50,6 +50,7 @@ macro_rules! entry {
             "ecall",
         );
 
+        #[cfg(target_arch = "riscv64")]
         #[panic_handler]
         fn panic_handler(panic_info: &core::panic::PanicInfo) -> ! {
             $crate::debug!("{}", panic_info);