From 36f2d87ee57e841be5fe60f6430bdd167f9f03af Mon Sep 17 00:00:00 2001 From: Christian Cunningham Date: Tue, 1 Feb 2022 17:19:16 -0700 Subject: Added spinlock condition --- include/cpu/atomic/swap.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/cpu/atomic') diff --git a/include/cpu/atomic/swap.h b/include/cpu/atomic/swap.h index ebaaa1d..57a5add 100644 --- a/include/cpu/atomic/swap.h +++ b/include/cpu/atomic/swap.h @@ -13,7 +13,8 @@ static inline void atm_lock(unsigned long pid, unsigned long* addr) { unsigned long tmp, current_lock_value; asm volatile( -"1: ldrex %0, [%3]\n" +"1: clrex\n" +" ldrex %0, [%3]\n" " cmp %0, #0\n" " wfene\n" " strexeq %1, %2, [%3]\n" -- cgit v1.2.1