This actually simplifies the code a bit as now all local symbols are
handled uniformly.

This should fix the build of www/webkit2-gtk3.

llvm-svn: 291569

    
In a shared library an undefined symbol is implicitly imported. If the
symbol is called as a function a PLT entry is generated for it. When the
caller is a Thumb b.w a thunk to the PLT entry is needed as all PLT
entries are in ARM state.
    
This change allows undefined symbols to have thunks in the same way that
shared symbols may have thunks.

llvm-svn: 290951

Vectors returned form that function contained nullptrs or Undefined symbols.
This patch filter them out. This makes use of the function a bit easier.

llvm-svn: 290334

Previously, you had to call initDemangledSyms() before accessing DemangledSyms.
Now getDemangledSyms() initializes it and then returns it. So it is now less easy
to use it in a wrong way.

llvm-svn: 290323

llvm-svn: 290321

llvm-svn: 290320

DefinedSynthetic is not created for a real ELF object, so it doesn't
have to be a template function. It has a virtual st_value, which is
either 32 bit or 64 bit, but we can simply use 64 bit.

llvm-svn: 290241

llvm-svn: 290231

I thought for a while about how to remove it, but it looks like we
can just copy the file for now. Of course I'm not happy about that,
but it's just less than 50 lines of code, and we already have
duplicate code in Error.h and some other places. I want to solve
them all at once later.

Differential Revision: https://reviews.llvm.org/D27819

llvm-svn: 290062

llvm-svn: 289293

We first decide that the symbol is global, than that it should have
version foo. Since it was already not the default version, we were
producing a bogus warning.

llvm-svn: 289284

llvm-svn: 289217

llvm-svn: 289212

llvm-svn: 289084

The feature is documented as
-----------------------------
The format of the dynamic list is the same as the version node
without scope and node name.  See *note VERSION:: for more
information.
--------------------------------

And indeed qt uses a dynamic list with an 'extern "C++"' in it. With
this patch we support that

The change to gc-sections-shared makes us match bfd. Just because we
kept bar doesn't mean it has to be in the dynamic symbol table.

The changes to invalid-dynamic-list.test and reproduce.s are because
of the new parser.

The changes to version-script.s are the only case where we change
behavior with regards to bfd, but I would like to see a mix of
--version-script and --dynamic-list used in the wild before
complicating the code.

llvm-svn: 289082

llvm-svn: 289067

llvm-svn: 289066

llvm-svn: 289065

llvm-svn: 289064

llvm-svn: 289062

Follow-up to r289025.

llvm-svn: 289061

These MIPS specific symbols should be global because in general they can
have an arbitrary value. By default this value is a fixed offset from .got
section.

This patch adds more checks to the mips-gp-local.s test case but marks
it as XFAIL because LLD does not allow redefinition of absolute symbols
value by a linker script. This should be fixed by D27276.

Differential revision: https://reviews.llvm.org/D27524

llvm-svn: 289025

llvm-svn: 288993

This is a fairly reasonable bfd extension since there is one obvious value.

dtrace depends on this feature as it creates multiple absolute
symbols with the same value.

llvm-svn: 288461

StringRefZ is a class to represent a null-terminated string. String
length is computed lazily, so it's more efficient than StringRef to
represent strings in string table.

The motivation of defining this new class is to merge functions
that only differ in string types; we have many constructors that takes
`const char *` or `StringRef`. With StringRefZ, we can merge them.

Differential Revision: https://reviews.llvm.org/D27037

llvm-svn: 288172

llvm-svn: 287967

The function was used only within Relocations.cpp, but now we are
using it in many places, so this patch moves it to a file that fits
to the functionality.

llvm-svn: 287943

llvm-svn: 287901

Differential Revision: https://reviews.llvm.org/D27065

llvm-svn: 287899

HasError was always true if ErrorCount > 0, so we can use ErrorCount instead.

llvm-svn: 287849

We have different functions to stringize objects to construct
error messages. For InputFile, we have getFilename, and for
InputSection, we have getName. You had to memorize them.

I think this is the case where the function overloading comes in handy.

This patch defines toString() functions that are overloaded for all these
types, so that you just call it in error().

Differential Revision: https://reviews.llvm.org/D27030

llvm-svn: 287787

So that we have less number of overloaded functions.

llvm-svn: 287745

llvm-svn: 287742

There are two ways to set symbol versions. One way is to use symbol
definition file, and the other is to embed version names to symbol
names. In the latter way, symbol name is in the form of `foo@version1`
where `foo` is a real name and `version1` is a version.

We were parsing symbol names in insert(). That seems unnecessarily
too early. We can do it later after we resolve all symbols. Doing it
lazily is a good thing because it makes code easier to read
(because now we have a separate pass to parse symbol names). Also
it could slightly improve performance because if two identical symbols
have versions, we now parse them only once.

llvm-svn: 287741

llvm-svn: 287467

llvm-svn: 287318

llvm-svn: 287254

llvm-svn: 287253

llvm-svn: 287252

llvm-svn: 287234