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

llvm-svn: 182033

llvm-svn: 182031

llvm-svn: 181852

llvm-svn: 181622

llvm-svn: 181325

llvm-svn: 181288

This makes the target handler a constructor argument because the constructor of
OutputELFWriter relies on it being initialized.

llvm-svn: 181280

llvm-svn: 181188

llvm-svn: 180872

llvm-svn: 180769

[lld][ELF] (no testable functionality change) resize the number of entries in the string table for static linking

llvm-svn: 180692

[lld][ELF] (no testable functionality change) resize the number of entries in the string table for static linking

llvm-svn: 180691

Moved llvm_unreachable out of switch blocks to avoid the "control reaches end of non-void function" warning.

llvm-svn: 179590

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

llvm-svn: 178918

llvm-svn: 178914

llvm-svn: 178913

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

llvm-svn: 178815

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

llvm-svn: 178695

llvm-svn: 178495

llvm-svn: 178467

llvm-svn: 178466

llvm-svn: 178323

llvm-svn: 178269

llvm-svn: 178027

[ELF] no change in functionality, add functions to symbol table so that they can be overridden by derived classes

llvm-svn: 177990

llvm-svn: 177970

llvm-svn: 177969

llvm-svn: 177875

llvm-svn: 177564

llvm-svn: 177563

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

llvm-svn: 177561

llvm-svn: 177557

Improves performance.

llvm-svn: 177556

This is the standard way of implementing LLVM RTTI.

llvm-svn: 177555

This actually doesn't change behavior with the current LinkerInvocation, but
it's needed when you make reading parallel.

llvm-svn: 177554