This changes the interface of createLinkerInput to use ErrorOr, so that
errors from the linker can be captured.
Also adds a convenience function for error strings to be returned from
file nodes.
llvm-svn: 189871
This creates .init_array/.fini_array section for X86_64 ELF
targets and executes init/fini functions specified by the
-init/-fini options respectively.
llvm-svn: 189719
This adds an API to the LinkingContext for flavors to add Internal files
containing atoms that need to appear in the YAML output as well, when -emit-yaml
switch is used.
Flavors can add more internal files for other options that are needed.
llvm-svn: 189718
The cleanup includes :-
* Rename ambiguous Header class to ELFHeader
* Convert Chunk contentype and kind to be a enumerated class
* Remove functions that are not being used, avoids future confusion
llvm-svn: 189209
This change processes fini_array section in addition to processing
init_array sections. This also makes functions registered at compile
time for initialization and finalization to be run during execution
llvm-svn: 189196
There may be relocations that may be pointing to the section
even if the section sizes are 0. We shouldnot ignore them
for that regard.
llvm-svn: 189139
typeTLV content type is used by Darwin to represent thread local
storage. A new contentType has to be made to represent ELF
thread local storage data. These have been set to
- typeThreadZeroFill (represents TBSS storage)
- typeThreadData (represents TDATA storage)
llvm-svn: 189137
BSS atoms dont take any file space in the Input file. They are associated
with a contentType(typeZeroFill). Similiar zero fill types also exist which
have the same meaning in terms of occupying file space in the Input.
These atoms have to be handled seperately when writing to the
lld's intermediate file or the lld test infrastructure.
Also adds a test.
llvm-svn: 189136
Also change some local variable names: "ti" -> "context" and
"_targetInfo" -> "_context".
Differential Revision: http://llvm-reviews.chandlerc.com/D1301
llvm-svn: 187823
This renames variable name to reflect initial undefined symbols that are
defined by the linker -u option.
This doesnot change any functionality in lld, and updates code to reflect
Nick's comment.
llvm-svn: 184682
This change adds functionality to add more sections like .gcc_except_table,
.data.rel.local, .data.rel.ro into the default section map, so that they are
all merged into appropriate output sections.
This also makes c++ static binaries comparable to what you get with the default
linker.
Adds a test for testing the functionality.
llvm-svn: 184071
Architecture specific code should reside in architecture specific directory
not in Atom. Looks like there are no efforts being made at this moment to
support ARM, so let's remove it for now.
Reviewers: Bigcheese
CC: llvm-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D959
llvm-svn: 183877
The yaml reader is not specific to any file format. This patch moves
it to TargetInfo and makes validate a non virtual interface so that it
can be constructed from a single location.
The same method will be used to create a reader for llvm bitcode
files.
llvm-svn: 183740
- Split createAtom() in lib/ReaderWriter/ELF/File.h into small methods.
- Added comments to code in other methods.
No functionality changes.
Reviewers: shankarke
CC: llvm-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D921
llvm-svn: 183696
This fixes a recent regression (r183338). Stripped elf files (like installed
crtn.o for example), are not required to have a symbol table. Handle that
correctly.
llvm-svn: 183573
Users can override the default value of the dynamic linker to be set to the
one that appears in the command line. The path can even be empty!.
Added a test for the option.
llvm-svn: 182889
only if they are relative. This removes the FIXME when the
relocations are being emitted and checks if the relocation
is relative and only then populates the addend information.
I couldnt add a testcase for this as llvm-readobj lacks
functionality of printing dynamic relocations.
When the functionality is added, remove the commented lines
from elf/ifunc.test to test functionality.
llvm-svn: 182077
This patch splits X86_64Target specific code so that
the dynamic atoms and the Relocation handlers are in seperate
files for easier maintenace. The files are sure to grow and this
makes it easier to work with.
* There is no change in functionality *
llvm-svn: 182076
to the list of undefined atoms.
The processing of undefined atoms from dynamic libraries is controlled by
use-shlib-undefines command line option.
This patch also adds additional command line arguments to allow/disallow
unresolved symbols from shared libraries and mimics GNU ld behavior.
llvm-svn: 179257
InputFile is being pulled from the Archive library to resolve a symbol.
The buffer which was being used was already being handed over to the
MemoryBuffer object and was being accessed after the hand over.
Moving it before the buffer is handed over.
llvm-svn: 178838
The major changes are:
1) LinkerOptions has been merged into TargetInfo
2) LinkerInvocation has been merged into Driver
3) Drivers no longer convert arguments into an intermediate (core) argument
list, but instead create a TargetInfo object and call setter methods on
it. This is only how in-process linking would work. That is, you can
programmatically set up a TargetInfo object which controls the linking.
4) Lots of tweaks to test suite to work with driver changes
5) Add the DarwinDriver
6) I heavily doxygen commented TargetInfo.h
Things to do after this patch is committed:
a) Consider renaming TargetInfo, given its new roll.
b) Consider pulling the list of input files out of TargetInfo. This will
enable in-process clients to create one TargetInfo the re-use it with
different input file lists.
c) Work out a way for Drivers to format the warnings and error done in
core linking.
llvm-svn: 178776
This changes from reading each relocation individually for each section to just
storing the range of relocations. It also counts the relocations to preallocate
the _references array.
llvm-svn: 177562
This seems to be what ld does, but I'm not sure how it works with symbol interposition.
With this hello-world with glibc dynamically linked works.
llvm-svn: 176310
const U *>>. Even in C++11 it doesn't seem this is valid as vector's
emplace support requires move assignment, and there is no way to move
assign a reference.
The real motivation however is that this fixes the build of lld with
libstdc++ 4.6.
llvm-svn: 175481
The purpose of this change is to simplify creating non-atom sections.
Previously _contentType, _sectionKind and _order were used for multiple
purposes and collided in places. This moves all of the Atom specific logic down
into AtomSection and makes Section just have raw Elf_Shdr flags.
llvm-svn: 175207
This removes Target and moves the functionality it had over to TargetInfo.
This also simplifies LinkerInput by removing the InputKind. This will be handled elsewhere.
llvm-svn: 174589
Shankar Easwaran