diff options
Diffstat (limited to 'ArmPkg/Library/GccLto/liblto-aarch64.s')
| -rw-r--r-- | ArmPkg/Library/GccLto/liblto-aarch64.s | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/ArmPkg/Library/GccLto/liblto-aarch64.s b/ArmPkg/Library/GccLto/liblto-aarch64.s new file mode 100644 index 0000000000..45000d3277 --- /dev/null +++ b/ArmPkg/Library/GccLto/liblto-aarch64.s @@ -0,0 +1,27 @@ +// +// Copyright (c) 2016, Linaro Ltd. All rights reserved.<BR> +// +// This program and the accompanying materials are licensed and made available under +// the terms and conditions of the BSD License that accompanies this distribution. +// The full text of the license may be found at +// http://opensource.org/licenses/bsd-license.php. +// +// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +// + +// +// GCC in LTO mode interoperates poorly with non-standard libraries that +// provide implementations of compiler intrinsics such as memcpy/memset +// or the stack protector entry points. +// +// By referencing these functions from a non-LTO object that can be passed +// to the linker via the -plugin-opt=-pass-through=-lxxx options, the +// intrinsics are included in the link in a way that allows them to be +// pruned again if no other references to them exist. +// + + .long memcpy - . + .long memset - . + .long __stack_chk_fail - . + .long __stack_chk_guard - . |