In many places we reset Size to 0 before calling assignOffsets()
manually. Sometimes we don't do that. 
It looks we can just always do that inside.

Previous code had:
template <class ELFT> void OutputSection::assignOffsets() {
  uint64_t Off = Size;

And tests feels fine with Off = 0. 
I think Off = Size make no sence.

Differential revision: https://reviews.llvm.org/D30463

llvm-svn: 296609

llvm-svn: 296511

We converted them before, but there were a few remaining occurrences.

llvm-svn: 296510

Differential Revision: https://reviews.llvm.org/D30348

llvm-svn: 296508

We do not use it later, so don't have to store.

llvm-svn: 296466

Previously, these two functions put their symbols in different queues.
Now that the queues have been merged. So there's no point to keep two
separate functions.

llvm-svn: 296435

In LLD source code, too many functions are called "finalize", although
what they do are different. This patch gives it a better name.

llvm-svn: 296314

This class didn't use ELFT.

llvm-svn: 296313

llvm-svn: 296311

The list of all input sections was defined in SymbolTable class for a
historical reason. The list itself is not a template. However, because
SymbolTable class is a template, we needed to pass around ELFT to access
the list. This patch moves the list out of the class so that it doesn't
need ELFT.

llvm-svn: 296309

Since OutputSection is no longer a template, it doesn't make much
sense to tempalte its factory class.

llvm-svn: 296308

llvm-svn: 296307

Differential Revision: https://reviews.llvm.org/D30351

llvm-svn: 296303

llvm-svn: 296225

Now that all special sections are SyntheticSections, we only need one
OutputSection class.

llvm-svn: 296127

llvm-svn: 296123

__ehdr_start should be pointing to ELF file headers, not program
headers.

This is a reland of D30319.

Differential Revision: https://reviews.llvm.org/D30323

llvm-svn: 296085

This reverts commit r296079.

llvm-svn: 296083

__ehdr_start should be pointing to ELF file headers, not program
headers.

Differential Revision: https://reviews.llvm.org/D30319

llvm-svn: 296079

With this we complete the transition out of special output sections,
and with the previous patches it should be possible to merge
OutputSectionBase and OuputSection.

llvm-svn: 296023

With the current design an InputSection is basically anything that
goes directly in a OutputSection. That includes plain input section
but also synthetic sections, so this should probably not be a
template.

llvm-svn: 295993

If -z stack-size is given, we need to add PT_GNU_STACK even if
-z execstack is not given.

llvm-svn: 295945

Now that InputSectionBase is not a template there is no reason to have
the two.

llvm-svn: 295924

Removing this template is not a big win by itself, but opens the way
for removing more templates.

llvm-svn: 295923

llvm-svn: 295909

    
This change moves the SymbolBodies with isLocal() == true before the global
symbols then calculating NumLocals rather than assuming all locals are
added before globals and the first NumLocals have isLocal() == true. This
permits Thunks to be moved after the pass that adds global symbols from
synthetics to the symbol table.

Differential revision: https://reviews.llvm.org/D30085

llvm-svn: 295650

This is a small difference I noticed to gold and bfd. When given
--print-gc-sections, we print sections a linkerscript marks
DISCARD. The other linkers don't.

llvm-svn: 295467

llvm-svn: 295448

llvm-svn: 295388

Without this we would produce two relocation sections pointing to the
same section, which gnu tools reject.

This fixes pr31986.

The implementation of -r/--emit-reloc is getting fairly
complicated. But lets get the test passing before trying to refactor
it.

llvm-svn: 295385

We can do this now that the linker script and the writer agree on
which sections should be combined.

llvm-svn: 295341

llvm-svn: 295283

llvm-svn: 295280

Previously, space in a BSS section for copy relocations are reserved
in a special way. We directly manipulated size of the BSS section.
r294577 changed the way of doing it. Now, we create an instance of
CopyRelSection (which is a synthetic input section) for each copy
relocation.

This patch removes the remains of the old way and add CopyRelSections
to BSS sections using `addSections` function, which is the usual
way to add an input section to an output section.

llvm-svn: 295278

For CloudABI I'm only interested in generating non-PIC/PIE executables
on armv6 and i686, as PIE introduces larger overhead than on aarch64 and
x86_64. Still, I want to be able to instruct the linker to generate a
dynamic symbol table if requested. One example use for this is that
dynamic symbol tables can be used by programs to print nicely formatted
stacktraces, including symbol names.

Right now there seems to be some logic in LLD that it only wants to emit
dynamic symbol tables when either linking against libraries or when
building PIC. Let's extend this to also take --export-dynamic into
account.

Reviewed by:	ruiu
Differential Revision:	https://reviews.llvm.org/D29982

llvm-svn: 295240

I think this is more readable than before.

llvm-svn: 295121

llvm-svn: 295031

Unfortunately some consumers of our .o files produced with -r expect
only one section symbol per section. That is true of at least of go's
own linker.

Combining them is a somewhat convoluted process. We have to create a
symbol for every section since we don't know which ones will be
needed. The relocation sections also have to be written first to
handle the Elf_Rel addend.

I did consider a completely different approach:

We could remove the -r special case of relocation sections when
reading. We would instead have a copyRelocs function that is used
instead of scanRelocs. It would create a DynamicReloc for each
relocation and a RelocationSection for each input relocation section.

A complication of such change is that DynamicReloc would have to take
a section index and a input section instead of a symbol since with
-emit-relocs some DynamicReloc would hold relocations referring to the
dynamic symbol table and other to the static symbol table.

That would be a pretty big change, and if we do it it is probably
better to do it as a refactoring.

llvm-svn: 294816

    
Much of the code in PltSection and IPltSection is similar, we identify
the IPlt by a HeaderSize of 0 and alter our behaviour in the member
functions appropriately:
-Iplt does not have a header
-Iplt always follows after the Plt
    
Differential Revision: https://reviews.llvm.org/D29664

llvm-svn: 294579

Recommit r294464 "[ELF] - Added partial support for --emit-relocs (no --gc-section case, no /DISCARD/ support) #3"

with temporarily file name fix in testcase.

Original commit message:

-q, --emit-relocs - Generate relocations in output

Simplest implementation: 
* no GC case, 
* no "/DISCARD/" linkerscript command support.

This patch is extracted from D28612 / D29636,

Relative to PR31579.

Differential revision: https://reviews.llvm.org/D29663

llvm-svn: 294469