Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

provide generic cas for _LP64

This commit is contained in:
christos 2021-03-14 22:56:39 +00:00
parent 0c8fc40bd0
commit 400a3a1ed4
1 changed files with 51 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

63
sys/rump/librump/rumpkern/atomic_cas_generic.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: atomic_cas_generic.c,v 1.2 2009/12/18 22:37:18 pooka Exp $ */
/* $NetBSD: atomic_cas_generic.c,v 1.3 2021/03/14 22:56:39 christos Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: atomic_cas_generic.c,v 1.2 2009/12/18 22:37:18 pooka Exp $");
__KERNEL_RCSID(0, "$NetBSD: atomic_cas_generic.c,v 1.3 2021/03/14 22:56:39 christos Exp $");
/*
* This is basically common/lib/libc/atomic/atomic_init_testset.c
@ -45,7 +45,7 @@ __KERNEL_RCSID(0, "$NetBSD: atomic_cas_generic.c,v 1.2 2009/12/18 22:37:18 pooka
#define I16 I2 I2 I2 I2 I2 I2 I2 I2
#define I128 I16 I16 I16 I16 I16 I16 I16 I16
static __cpu_simple_lock_t atomic_locks[128] = { I128 };
static __cpu_simple_lock_t atomic_locks32[128] = { I128 };
uint32_t
_atomic_cas_32(volatile uint32_t *ptr, uint32_t old, uint32_t new)
@ -53,7 +53,7 @@ _atomic_cas_32(volatile uint32_t *ptr, uint32_t old, uint32_t new)
__cpu_simple_lock_t *lock;
uint32_t ret;
lock = &atomic_locks[((uintptr_t)ptr >> 3) & 127];
lock = &atomic_locks32[((uintptr_t)ptr >> 3) & 127];
__cpu_simple_lock(lock);
ret = *ptr;
if (__predict_true(ret == old)) {
@ -65,23 +65,62 @@ _atomic_cas_32(volatile uint32_t *ptr, uint32_t old, uint32_t new)
}
#undef atomic_cas_32
atomic_op_alias(atomic_cas_32,_atomic_cas_32)
atomic_op_alias(atomic_cas_32_ni,_atomic_cas_32)
__strong_alias(_atomic_cas_32_ni,_atomic_cas_32)
#ifdef _LP64
static __cpu_simple_lock_t atomic_locks64[128] = { I128 };
uint64_t
_atomic_cas_64(volatile uint64_t *ptr, uint64_t old, uint64_t new)
{
__cpu_simple_lock_t *lock;
uint64_t ret;
lock = &atomic_locks64[((uintptr_t)ptr >> 4) & 127];
__cpu_simple_lock(lock);
ret = *ptr;
if (__predict_true(ret == old)) {
*ptr = new;
}
__cpu_simple_unlock(lock);
return ret;
}
#undef atomic_cas_64
atomic_op_alias(atomic_cas_64,_atomic_cas_64)
atomic_op_alias(atomic_cas_64_ni,_atomic_cas_64)
__strong_alias(_atomic_cas_64_ni,_atomic_cas_64)
#endif
#undef atomic_cas_uint
#undef atomic_cas_ulong
#undef atomic_cas_ptr
atomic_op_alias(atomic_cas_32,_atomic_cas_32)
atomic_op_alias(atomic_cas_uint,_atomic_cas_32)
__strong_alias(_atomic_cas_uint,_atomic_cas_32)
atomic_op_alias(atomic_cas_ulong,_atomic_cas_32)
__strong_alias(_atomic_cas_ulong,_atomic_cas_32)
atomic_op_alias(atomic_cas_ptr,_atomic_cas_32)
__strong_alias(_atomic_cas_ptr,_atomic_cas_32)
atomic_op_alias(atomic_cas_32_ni,_atomic_cas_32)
__strong_alias(_atomic_cas_32_ni,_atomic_cas_32)
atomic_op_alias(atomic_cas_uint_ni,_atomic_cas_32)
__strong_alias(_atomic_cas_uint_ni,_atomic_cas_32)
#ifdef _LP64
atomic_op_alias(atomic_cas_ulong,_atomic_cas_64)
__strong_alias(_atomic_cas_ulong,_atomic_cas_64)
atomic_op_alias(atomic_cas_ulong_ni,_atomic_cas_64)
__strong_alias(_atomic_cas_ulong_ni,_atomic_cas_64)
atomic_op_alias(atomic_cas_ptr,_atomic_cas_64)
__strong_alias(_atomic_cas_ptr,_atomic_cas_64)
atomic_op_alias(atomic_cas_ptr_ni,_atomic_cas_64)
__strong_alias(_atomic_cas_ptr_ni,_atomic_cas_64)
#else
atomic_op_alias(atomic_cas_ulong,_atomic_cas_32)
__strong_alias(_atomic_cas_ulong,_atomic_cas_32)
atomic_op_alias(atomic_cas_ulong_ni,_atomic_cas_32)
__strong_alias(_atomic_cas_ulong_ni,_atomic_cas_32)
atomic_op_alias(atomic_cas_ptr,_atomic_cas_32)
__strong_alias(_atomic_cas_ptr,_atomic_cas_32)
atomic_op_alias(atomic_cas_ptr_ni,_atomic_cas_32)
__strong_alias(_atomic_cas_ptr_ni,_atomic_cas_32)
#endif