libgo/go/runtime/lfstack_32bit.go

   1 // Copyright 2014 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 //go:build 386 || arm || mips || mipsle || amd64p32 || armbe || m68k || mips64p32 || mips64p32le || nios2 || ppc || riscv || s390 || sh || shbe || sparc
   6 // +build 386 arm mips mipsle amd64p32 armbe m68k mips64p32 mips64p32le nios2 ppc riscv s390 sh shbe sparc
   7
   8 package runtime
   9
  10 import "unsafe"
  11
  12 // On 32-bit systems, the stored uint64 has a 32-bit pointer and 32-bit count.
  13
  14 func lfstackPack(node *lfnode, cnt uintptr) uint64 {
  15         return uint64(uintptr(unsafe.Pointer(node)))<<32 | uint64(cnt)
  16 }
  17
  18 func lfstackUnpack(val uint64) *lfnode {
  19         return (*lfnode)(unsafe.Pointer(uintptr(val >> 32)))
  20 }