[libcpu] fix arm/cortex-a/start_gcc.S (#7515)

2023-05-19 11:32:58 +08:00 · 2023-05-19 11:32:58 +08:00 · 9217865c6a
parent c105486bfc
commit 9217865c6a
1 changed files with 1 additions and 2 deletions
--- a/libcpu/arm/cortex-a/start_gcc.S
+++ b/libcpu/arm/cortex-a/start_gcc.S
@ -210,10 +210,9 @@ _rtthread_startup:

 .weak rt_asm_cpu_id 
 rt_asm_cpu_id:
-    mov r9, lr
    mrc p15, 0, r0, c0, c0, 5
    and r0, r0, #0xf
-    mov lr, r9
+    mov pc, lr

 stack_setup: