mirror of
https://github.com/golang/go
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22 lines
564 B
Go
22 lines
564 B
Go
// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build 386 arm nacl
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package runtime
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import "unsafe"
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// On 32-bit systems, the stored uint64 has a 32-bit pointer and 32-bit count.
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func lfstackPack(node *lfnode, cnt uintptr) uint64 {
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return uint64(uintptr(unsafe.Pointer(node)))<<32 | uint64(cnt)
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}
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func lfstackUnpack(val uint64) (node *lfnode, cnt uintptr) {
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node = (*lfnode)(unsafe.Pointer(uintptr(val >> 32)))
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cnt = uintptr(val)
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return
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}
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