|  | // Copyright 2018 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. | 
|  |  | 
|  | package runtime | 
|  |  | 
|  | const ( | 
|  | // vdsoArrayMax is the byte-size of a maximally sized array on this architecture. | 
|  | // See cmd/compile/internal/arm64/galign.go arch.MAXWIDTH initialization. | 
|  | vdsoArrayMax = 1<<50 - 1 | 
|  | ) | 
|  |  | 
|  | // key and version at man 7 vdso : aarch64 | 
|  | var vdsoLinuxVersion = vdsoVersionKey{"LINUX_2.6.39", 0x75fcb89} | 
|  |  | 
|  | var vdsoSymbolKeys = []vdsoSymbolKey{ | 
|  | {"__kernel_clock_gettime", 0xd35ec75, 0x6e43a318, &vdsoClockgettimeSym}, | 
|  | } | 
|  |  | 
|  | // initialize to fall back to syscall | 
|  | var vdsoClockgettimeSym uintptr = 0 |