| #include <ck_cc.h> |
| |
| CK_CC_INLINE static void |
| spin_lock(volatile unsigned int *lock) |
| { |
| #ifdef __x86_64__ |
| __asm__ __volatile__( |
| "\n1:\t" |
| "lock ; decl %0\n\t" |
| "jns 2f\n" |
| "3:\n" |
| "rep;nop\n\t" |
| "cmpl $0,%0\n\t" |
| "jle 3b\n\t" |
| "jmp 1b\n" |
| "2:\t" : "=m" (*lock) : : "memory"); |
| #else |
| *lock = 1; |
| #endif |
| |
| return; |
| } |
| |
| CK_CC_INLINE static void |
| spin_unlock(volatile unsigned int *lock) |
| { |
| #ifdef __x86_64__ |
| __asm__ __volatile__("movl $1,%0" :"=m" (*lock) :: "memory"); |
| #else |
| *lock = 0; |
| return; |
| #endif |
| } |
| |
| #define LOCK_NAME "linux_spinlock" |
| #define LOCK_DEFINE volatile unsigned int lock = 1 |
| #define LOCK spin_lock(&lock) |
| #define UNLOCK spin_unlock(&lock) |
| |
