From 9cc9e95b288648d796d92f0b92cb713b35f20062 Mon Sep 17 00:00:00 2001 From: Dave Cheney Date: Thu, 7 Apr 2016 14:05:06 +0000 Subject: Revert "runtime: merge lfstack{Pack,Unpack} into one file" This broke solaris, which apparently does use the upper 17 bits of the address space. This reverts commit 3b02c5b1b66df9cdb23d5a3243bb37b2c312ea1b. Change-Id: Iedfe54abd0384960845468205f20191a97751c0b Reviewed-on: https://go-review.googlesource.com/21652 Reviewed-by: Dave Cheney --- src/runtime/lfstack_32bit.go | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 src/runtime/lfstack_32bit.go (limited to 'src/runtime/lfstack_32bit.go') diff --git a/src/runtime/lfstack_32bit.go b/src/runtime/lfstack_32bit.go new file mode 100644 index 0000000000..2f59e0212e --- /dev/null +++ b/src/runtime/lfstack_32bit.go @@ -0,0 +1,19 @@ +// 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 386 arm nacl + +package runtime + +import "unsafe" + +// On 32-bit systems, the stored uint64 has a 32-bit pointer and 32-bit count. + +func lfstackPack(node *lfnode, cnt uintptr) uint64 { + return uint64(uintptr(unsafe.Pointer(node)))<<32 | uint64(cnt) +} + +func lfstackUnpack(val uint64) *lfnode { + return (*lfnode)(unsafe.Pointer(uintptr(val >> 32))) +} -- cgit v1.3-5-g9baa