llvm-project/lld
Fangrui Song 8ffb2097cc [ELF] Refine LMA offset propagation rule in D76995
If neither AT(lma) nor AT>lma_region is specified,
D76995 keeps `lmaOffset` (LMA - VMA) if the previous section is in the
default LMA region.

This patch additionally checks that the two sections are in the same
memory region.

Add a test case derived from https://bugs.llvm.org/show_bug.cgi?id=45313

  .mdata : AT(0xfb01000) { *(.data); } > TCM
  // It is odd to make .bss inherit lmaOffset, because the two sections
  // are in different memory regions.
  .bss : { *(.bss) } > DDR

With this patch, section VMA/LMA match GNU ld. Note, GNU ld supports
out-of-order (w.r.t sh_offset) sections and places .text and .bss in the
same PT_LOAD. We don't have that behavior.

Reviewed By: grimar

Differential Revision: https://reviews.llvm.org/D81986
2020-06-19 09:11:33 -07:00
..
COFF [CodeView] Revert 8374bf4363 and 403f953792 2020-06-18 16:18:46 -04:00
Common FileOutputBuffer.h - remove unused includes. NFC. 2020-05-28 14:38:12 +01:00
ELF [ELF] Refine LMA offset propagation rule in D76995 2020-06-19 09:11:33 -07:00
MachO fix a typo to cycle bots 2020-06-18 11:31:47 -04:00
MinGW [LLD/MinGW]: Expose --thinlto-cache-dir 2020-05-24 12:30:56 +03:00
cmake/modules lld: Let find_package(LLD) work 2020-05-14 09:59:53 -04:00
docs [ELF] Refine LMA offset propagation rule in D76995 2020-06-19 09:11:33 -07:00
include/lld [LLD] Have only one SpecificAllocator per type 2020-06-02 14:09:09 -07:00
lib lld: use `std::make_unique` (NFC) 2020-06-03 19:23:13 +00:00
test [ELF] Refine LMA offset propagation rule in D76995 2020-06-19 09:11:33 -07:00
tools/lld Reland D78837 [lld] Remove special cases from default ld driver mode. 2020-04-29 14:45:44 -07:00
unittests Make llvm::StringRef to std::string conversions explicit. 2020-01-28 23:25:25 +01:00
utils Python 2/3 compatibility 2019-03-20 07:42:13 +00:00
wasm [lld][WebAssembly] Allow ctors functions that return values 2020-06-18 13:11:40 -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 lld: Let find_package(LLD) work 2020-05-14 09:59:53 -04:00
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.