llvm-project/lld
Jez Ng 22e6648a18 [lld-macho] Implement -headerpad
Tools like `install_name_tool` and `codesign` may modify the Mach-O
header and increase its size. The linker has to provide padding to make this
possible. This diff does that, plus sets its default value to 32 bytes (which
is what ld64 does).

Unlike ld64, however, we lay out our sections *exactly* `-headerpad` bytes from
the header, whereas ld64 just treats the padding requirement as a lower bound.
ld64 actually starts laying out the non-header sections in the __TEXT segment
from the end of the (page-aligned) segment rather than the front, so its
binaries typically have more than `-headerpad` bytes of actual padding.
We should consider implementing the same alignment behavior.

Reviewed By: #lld-macho, compnerd

Differential Revision: https://reviews.llvm.org/D84714
2020-07-30 14:29:31 -07:00
..
COFF [LLD] [Mingw] Don't export symbols from profile generate 2020-07-30 23:33:20 +03:00
Common [lld-macho] Implement -headerpad 2020-07-30 14:29:31 -07:00
ELF [ELF] Add --dependency-file option 2020-07-30 12:31:20 -07:00
MachO [lld-macho] Implement -headerpad 2020-07-30 14:29:31 -07:00
MinGW [LLD] [MinGW] Implement the --no-seh flag 2020-07-28 21:08:37 +03:00
cmake/modules lld: Let find_package(LLD) work 2020-05-14 09:59:53 -04:00
docs Bump the trunk major version to 12 2020-07-15 12:05:05 +02:00
include/lld [lld-macho] Implement -headerpad 2020-07-30 14:29:31 -07:00
lib [CMake] Make `intrinsics_gen` dependency unconditional. 2020-07-17 16:43:17 -07:00
test [lld-macho] Implement -headerpad 2020-07-30 14:29:31 -07:00
tools/lld Reland D78837 [lld] Remove special cases from default ld driver mode. 2020-04-29 14:45:44 -07:00
unittests Use INTERFACE_COMPILE_OPTIONS to disable -Wsuggest-override for any target that links to gtest 2020-07-27 08:37:01 -07:00
utils Python 2/3 compatibility 2019-03-20 07:42:13 +00:00
wasm [CMake] Make `intrinsics_gen` dependency unconditional. 2020-07-17 16:43:17 -07:00
.clang-format
.clang-tidy [lld] Add .clang-tidy to customize readability-identifier-naming.{Member,Parameter,Variable}Case => camelBack 2020-03-09 08:26:41 -07:00
.gitignore
CMakeLists.txt [CMake] Move find_package(ZLIB) to LLVMConfig 2020-07-27 17:13:55 -07:00
CODE_OWNERS.TXT
LICENSE.TXT Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
README.md

README.md

LLVM Linker (lld)

This directory and its subdirectories contain source code for the LLVM Linker, a modular cross platform linker which is built as part of the LLVM compiler infrastructure project.

lld is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt.

Benchmarking

In order to make sure various developers can evaluate patches over the same tests, we create a collection of self contained programs.

It is hosted at https://s3-us-west-2.amazonaws.com/linker-tests/lld-speed-test.tar.xz

The current sha256 is 10eec685463d5a8bbf08d77f4ca96282161d396c65bd97dc99dbde644a31610f.