1 // Copyright 2009 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 // +build amd64 amd64p32 6 7 package atomic 8 9 import "unsafe" 10 11 //go:nosplit 12 //go:noinline 13 func Load(ptr *uint32) uint32 { 14 return *ptr 15 } 16 17 //go:nosplit 18 //go:noinline 19 func Loadp(ptr unsafe.Pointer) unsafe.Pointer { 20 return *(*unsafe.Pointer)(ptr) 21 } 22 23 //go:nosplit 24 //go:noinline 25 func Load64(ptr *uint64) uint64 { 26 return *ptr 27 } 28 29 //go:noescape 30 func Xadd(ptr *uint32, delta int32) uint32 31 32 //go:noescape 33 func Xadd64(ptr *uint64, delta int64) uint64 34 35 //go:noescape 36 func Xadduintptr(ptr *uintptr, delta uintptr) uintptr 37 38 //go:noescape 39 func Xchg(ptr *uint32, new uint32) uint32 40 41 //go:noescape 42 func Xchg64(ptr *uint64, new uint64) uint64 43 44 //go:noescape 45 func Xchguintptr(ptr *uintptr, new uintptr) uintptr 46 47 //go:noescape 48 func And8(ptr *uint8, val uint8) 49 50 //go:noescape 51 func Or8(ptr *uint8, val uint8) 52 53 // NOTE: Do not add atomicxor8 (XOR is not idempotent). 54 55 //go:noescape 56 func Cas64(ptr *uint64, old, new uint64) bool 57 58 //go:noescape 59 func Store(ptr *uint32, val uint32) 60 61 //go:noescape 62 func Store64(ptr *uint64, val uint64) 63 64 // StorepNoWB performs *ptr = val atomically and without a write 65 // barrier. 66 // 67 // NO go:noescape annotation; see atomic_pointer.go. 68 func StorepNoWB(ptr unsafe.Pointer, val unsafe.Pointer) 69
