diff options
-rw-r--r-- | lib/libc_r/arch/amd64/_atomic_lock.S | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/lib/libc_r/arch/amd64/_atomic_lock.S b/lib/libc_r/arch/amd64/_atomic_lock.S index af49aff..aaab081 100644 --- a/lib/libc_r/arch/amd64/_atomic_lock.S +++ b/lib/libc_r/arch/amd64/_atomic_lock.S @@ -35,8 +35,7 @@ * eax will contain the return value (zero if lock obtained). */ ENTRY(_atomic_lock) - movl 4(%esp), %ecx movl $1, %eax - xchg %eax, (%ecx) + xchgq %rax, (%rdi) ret |