1// 2// Copyright (c) 2016, Linaro Ltd. All rights reserved.<BR> 3// 4// This program and the accompanying materials are licensed and made available under 5// the terms and conditions of the BSD License that accompanies this distribution. 6// The full text of the license may be found at 7// http://opensource.org/licenses/bsd-license.php. 8// 9// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 10// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 11// 12 13// 14// GCC in LTO mode interoperates poorly with non-standard libraries that 15// provide implementations of compiler intrinsics such as memcpy/memset 16// or the stack protector entry points. 17// 18// By referencing these functions from a non-LTO object that can be passed 19// to the linker via the -plugin-opt=-pass-through=-lxxx options, the 20// intrinsics are included in the link in a way that allows them to be 21// pruned again if no other references to them exist. 22// 23 24 .long memcpy - . 25 .long memset - . 26 .long __stack_chk_fail - . 27 .long __stack_chk_guard - . 28