// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package runtime

import (
	
	
)

// These functions cannot have go:noescape annotations,
// because while ptr does not escape, new does.
// If new is marked as not escaping, the compiler will make incorrect
// escape analysis decisions about the pointer value being stored.

// atomicwb performs a write barrier before an atomic pointer write.
// The caller should guard the call with "if writeBarrier.enabled".
//
//go:nosplit
func atomicwb( *unsafe.Pointer,  unsafe.Pointer) {
	 := (*uintptr)(unsafe.Pointer())
	if !getg().m.p.ptr().wbBuf.putFast(*, uintptr()) {
		wbBufFlush(, uintptr())
	}
}

// atomicstorep performs *ptr = new atomically and invokes a write barrier.
//
//go:nosplit
func atomicstorep( unsafe.Pointer,  unsafe.Pointer) {
	if writeBarrier.enabled {
		atomicwb((*unsafe.Pointer)(), )
	}
	atomic.StorepNoWB(noescape(), )
}

// Like above, but implement in terms of sync/atomic's uintptr operations.
// We cannot just call the runtime routines, because the race detector expects
// to be able to intercept the sync/atomic forms but not the runtime forms.

//go:linkname sync_atomic_StoreUintptr sync/atomic.StoreUintptr
func sync_atomic_StoreUintptr( *uintptr,  uintptr)

//go:linkname sync_atomic_StorePointer sync/atomic.StorePointer
//go:nosplit
func sync_atomic_StorePointer( *unsafe.Pointer,  unsafe.Pointer) {
	if writeBarrier.enabled {
		atomicwb(, )
	}
	sync_atomic_StoreUintptr((*uintptr)(unsafe.Pointer()), uintptr())
}

//go:linkname sync_atomic_SwapUintptr sync/atomic.SwapUintptr
func sync_atomic_SwapUintptr( *uintptr,  uintptr) uintptr

//go:linkname sync_atomic_SwapPointer sync/atomic.SwapPointer
//go:nosplit
func sync_atomic_SwapPointer( *unsafe.Pointer,  unsafe.Pointer) unsafe.Pointer {
	if writeBarrier.enabled {
		atomicwb(, )
	}
	 := unsafe.Pointer(sync_atomic_SwapUintptr((*uintptr)(noescape(unsafe.Pointer())), uintptr()))
	return 
}

//go:linkname sync_atomic_CompareAndSwapUintptr sync/atomic.CompareAndSwapUintptr
func sync_atomic_CompareAndSwapUintptr( *uintptr, ,  uintptr) bool

//go:linkname sync_atomic_CompareAndSwapPointer sync/atomic.CompareAndSwapPointer
//go:nosplit
func sync_atomic_CompareAndSwapPointer( *unsafe.Pointer, ,  unsafe.Pointer) bool {
	if writeBarrier.enabled {
		atomicwb(, )
	}
	return sync_atomic_CompareAndSwapUintptr((*uintptr)(noescape(unsafe.Pointer())), uintptr(), uintptr())
}