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// Copyright 2014 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.
// +build !arm
package runtime
import "unsafe"
//go:noescape
func xadd(ptr *uint32, delta int32) uint32
//go:noescape
func xadd64(ptr *uint64, delta int64) uint64
//go:noescape
func xchg(ptr *uint32, new uint32) uint32
//go:noescape
func xchg64(ptr *uint64, new uint64) uint64
// Cannot use noescape here: ptr does not but new does escape.
// Instead use noescape(ptr) in wrapper below.
func xchgp1(ptr unsafe.Pointer, new unsafe.Pointer) unsafe.Pointer
//go:nosplit
func xchgp(ptr unsafe.Pointer, new unsafe.Pointer) unsafe.Pointer {
old := xchgp1(noescape(ptr), new)
writebarrierptr_nostore((*uintptr)(ptr), uintptr(new))
return old
}
//go:noescape
func xchguintptr(ptr *uintptr, new uintptr) uintptr
//go:noescape
func atomicload(ptr *uint32) uint32
//go:noescape
func atomicload64(ptr *uint64) uint64
//go:noescape
func atomicloadp(ptr unsafe.Pointer) unsafe.Pointer
//go:noescape
func atomicor8(ptr *uint8, val uint8)
//go:noescape
func cas64(ptr *uint64, old, new uint64) bool
//go:noescape
func atomicstore(ptr *uint32, val uint32)
//go:noescape
func atomicstore64(ptr *uint64, val uint64)
// Cannot use noescape here: ptr does not but val does escape.
// Instead use noescape(ptr) in wrapper below.
func atomicstorep1(ptr unsafe.Pointer, val unsafe.Pointer)
//go:nosplit
func atomicstorep(ptr unsafe.Pointer, val unsafe.Pointer) {
atomicstorep1(noescape(ptr), val)
// TODO(rsc): Why does the compiler think writebarrierptr_nostore's dst argument escapes?
writebarrierptr_nostore((*uintptr)(noescape(ptr)), uintptr(val))
}
// Cannot use noescape here: ptr does not but new does escape.
// Instead use noescape(ptr) in wrapper below.
func casp1(ptr *unsafe.Pointer, old, new unsafe.Pointer) bool
//go:nosplit
func casp(ptr *unsafe.Pointer, old, new unsafe.Pointer) bool {
ok := casp1((*unsafe.Pointer)(noescape(unsafe.Pointer(ptr))), old, new)
if !ok {
return false
}
writebarrierptr_nostore((*uintptr)(unsafe.Pointer(ptr)), uintptr(new))
return true
}
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