aarch64: fix a bug of bcm2837::asm::dealy()

6 years ago · faa5f01f31
parent addf49ffdb
commit faa5f01f31
1 changed files with 1 additions and 1 deletions
--- a/crate/bcm2837/src/asm.rs
+++ b/crate/bcm2837/src/asm.rs
@ -4,7 +4,7 @@
 #[inline]
 pub unsafe fn delay(clock: u32) {
    #[cfg(target_arch = "aarch64")]
-    asm!("1: subs x0, x0, #1; bne 1b;"
+    asm!("mov x1, x0; 1: subs x1, x1, #1; bne 1b;"
        :: "{x0}"(clock)
        :: "volatile");
 }