--- common/sys/atomic-ppc.h	2024-07-12 22:23:22.000000000 +0800
+++ common/sys/atomic-ppc.h	2026-04-23 10:43:33.000000000 +0800
@@ -153,7 +153,7 @@
 
    __asm__ __volatile__(
                         "1:   lwarx   %0, 0, %1    \n\t"
-                        "     addic   %0, %0,%2    \n\t"
+                        "     add     %0, %0,%2    \n\t"
                         "     stwcx.  %0, 0, %1    \n\t"
                         "     bne-    1b           \n\t"
                         : "=&r" (t)
@@ -174,7 +174,7 @@
 
    __asm__ __volatile__(
                         "1:   lwarx   %0, 0,%1     \n\t"
-                        "     subf    %0,%0,%2     \n\t"
+                        "     subf    %0,%2,%0     \n\t"
                         "     stwcx.  %0,0,%1      \n\t"
                         "     bne-    1b           \n\t"
                         : "=&r" (t)