diff options
| author | Justin Hibbits <jhibbits@FreeBSD.org> | 2022-01-14 03:46:29 +0000 |
|---|---|---|
| committer | Justin Hibbits <jhibbits@FreeBSD.org> | 2022-01-14 03:46:52 +0000 |
| commit | b5d227b0b27adbb7b4db9f8f27a14df342344c50 (patch) | |
| tree | 0876fb1c9c6855c64a1c4098dc40f425c7a42a4b /sys/powerpc/include | |
| parent | dd694648ff0f1c33ea05d9eb63fdbec527b27836 (diff) | |
Diffstat (limited to 'sys/powerpc/include')
| -rw-r--r-- | sys/powerpc/include/atomic.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/sys/powerpc/include/atomic.h b/sys/powerpc/include/atomic.h index 0b383a4ebdf6..0d54ba4115c7 100644 --- a/sys/powerpc/include/atomic.h +++ b/sys/powerpc/include/atomic.h @@ -994,6 +994,117 @@ atomic_swap_64(volatile u_long *p, u_long v) #define atomic_swap_ptr(p,v) atomic_swap_32((volatile u_int *)(p), v) #endif +static __inline int +atomic_testandset_int(volatile u_int *p, u_int v) +{ + u_int m = (1 << (v & 0x1f)); + u_int res; + u_int tmp; + + __asm __volatile( + "1: lwarx %0,0,%3\n" + " and. %1,%0,%4\n" + " or %0,%0,%4\n" + " stwcx. %0,0,%3\n" + " bne- 1b\n" + : "=&r"(tmp), "=&r"(res), "+m"(*p) + : "r"(p), "r"(m) + : "cr0", "memory"); + + return (res != 0); +} + +static __inline int +atomic_testandclear_int(volatile u_int *p, u_int v) +{ + u_int m = (1 << (v & 0x1f)); + u_int res; + u_int tmp; + + __asm __volatile( + "1: lwarx %0,0,%3\n" + " and. %1,%0,%4\n" + " andc %0,%0,%4\n" + " stwcx. %0,0,%3\n" + " bne- 1b\n" + : "=&r"(tmp), "=&r"(res), "+m"(*p) + : "r"(p), "r"(m) + : "cr0", "memory"); + + return (res != 0); +} + +#ifdef __powerpc64__ +static __inline int +atomic_testandset_long(volatile u_long *p, u_int v) +{ + u_long m = (1 << (v & 0x3f)); + u_long res; + u_long tmp; + + __asm __volatile( + "1: ldarx %0,0,%3\n" + " and. %1,%0,%4\n" + " or %0,%0,%4\n" + " stdcx. %0,0,%3\n" + " bne- 1b\n" + : "=&r"(tmp), "=&r"(res), "+m"(*(volatile u_long *)p) + : "r"(p), "r"(m) + : "cr0", "memory"); + + return (res != 0); +} + +static __inline int +atomic_testandclear_long(volatile u_long *p, u_int v) +{ + u_long m = (1 << (v & 0x3f)); + u_long res; + u_long tmp; + + __asm __volatile( + "1: ldarx %0,0,%3\n" + " and. %1,%0,%4\n" + " andc %0,%0,%4\n" + " stdcx. %0,0,%3\n" + " bne- 1b\n" + : "=&r"(tmp), "=&r"(res), "+m"(*p) + : "r"(p), "r"(m) + : "cr0", "memory"); + + return (res != 0); +} +#else +static __inline int +atomic_testandset_long(volatile u_long *p, u_int v) +{ + return (atomic_testandset_int((volatile u_int *)p, v); +} + +static __inline int +atomic_testandclear_long(volatile u_long *p, u_int v) +{ + return (atomic_testandclear_int((volatile u_int *)p, v); +} +#endif + +#define atomic_testandclear_32 atomic_testandclear_int +#define atomic_testandset_32 atomic_testandset_int + +static __inline int +atomic_testandset_acq_long(volatile u_long *p, u_int v) +{ + u_int a = atomic_testandset_long(p, v); + __ATOMIC_ACQ(); + return (a); +} + +#define atomic_testandclear_int atomic_testandclear_int +#define atomic_testandset_int atomic_testandset_int +#define atomic_testandclear_long atomic_testandclear_long +#define atomic_testandset_long atomic_testandset_long +#define atomic_testandset_acq_long atomic_testandset_acq_long + static __inline void atomic_thread_fence_acq(void) { |
