Absence of it caused a clang warning:
warning: 'lld:🧝:LinkerScriptBase' has virtual functions but non-virtual destructor [-Wnon-virtual-dtor]
At fact we don't need it here because do not destroy this object by
base pointer.
llvm-svn: 280916
This patch allows static linking of TLS code. To do that it fixes
GOT entries initialization.
If TLS-related GOT entry created for a preemptible symbol i.e. has
a corresponding dynamic relocation, leave the entry initialized by zero.
Write down adjusted TLS symbol's values otherwise. For the adjustments
calculation use offsets for thread-local storage.
https://www.linux-mips.org/wiki/NPTL
llvm-svn: 280914
Previous way of accessing templated methods was a bit bulky,
Patch introduces small interface based solution.
Differential revision: https://reviews.llvm.org/D23872
llvm-svn: 280910
GCC passes it by default on powerpc64 on FreeBSD. GNU ld claims "this
option is ignored for SVR4 compatibility", so we can ignore it too.
Differential Revision: https://reviews.llvm.org/D24313
llvm-svn: 280864
After r280733 we use LLVM's demangler in lld. As a result we no longer
have a discrepancy between f() and f(void) on FreeBSD (due to an issue
with FreeBSD's system demangler).
Restore a test case for a void arg function.
Differential Revision: https://reviews.llvm.org/D24305
llvm-svn: 280831
Previously we combined sections by name if linkerscript was used.
For that we had to disable SHF_MERGE handling temporarily, but then
found that implementing it properly will require additional complexity layers like
subsections or something.
At the same time looks we can live with multiple output sections approach for now.
That patch do this change.
Differential revision: https://reviews.llvm.org/D24127
llvm-svn: 280801
GNU ld supports [chars] wildcards in version scripts, to match a single instance of any of the chars.
Here is an extern example from libstdc++'s version script in FreeBSD:
extern "C++"
{
...
std::locale::_[T-Za-z]*;
std::[A-Zm]*;
std::n[^u]*;
std::nu[^m]*;
std::num[^e]*;
...
}
Patch adds support for scripts above. This is PR29093.
Differential revision: https://reviews.llvm.org/D23803
llvm-svn: 280799
Previously testcases were enabled only for shell.
r280733 added c++ itanium demangler to lld and we can enable them fully.
Also this change make quotes to be escaped:
extern "C++" -> extern \"C++\", which worked before just because we are dropping tokens
quotes internally at this moment.
llvm-svn: 280797
This flag is supported by both BFD ld and gold and is occasionally
used to negate the effect of -gc-sections flag.
Differential Revision: https://reviews.llvm.org/D24270
llvm-svn: 280729
Patch implements FILL just as alias for =fillexpr.
This allows to make implementation much shorted and simpler than D24186.
Differential revision: https://reviews.llvm.org/D24227
llvm-svn: 280708
On most architectures the linker is required to optimize away any
references to __tls_get_addr in case of static linking. As usual
a special case is MIPS - libc defines __tls_get_addr itself because
there are no TLS optimizations for this architecture.
llvm-svn: 280664
It looks like MIPS dynamic loader does not support RELCOUNT tag.
Both gold/bfd linkers does not emit this tag on MIPS. I will investigate
the problem further but for now it is better to behave like GNU linkers.
llvm-svn: 280630
Use std::regex instead of hand written matcher.
Patch based on code and ideas of Rui Ueyama.
Differential revision: https://reviews.llvm.org/D23829
llvm-svn: 280544
od is defined by POSIX and exists since version 1 AT&T Unix.
hexdump is not part of any standard as far as I know.
So od is a better choice than hexdump.
Differential Revision: https://reviews.llvm.org/D24205
llvm-svn: 280536
"Error" looks like it is indicating a parse error. "Error" actually
instructs the later process to report an error if there's an error
condition. Thus the new name.
llvm-svn: 280529
Cmd used to be the single central place to dispatch. It is not longer
the case because we have a logic for readProvideOrAssignment().
This patch removes the hash table so that evrything is in a single
function. This is slightly verbose but should improve readability.
Differential Revision: https://reviews.llvm.org/D24200
llvm-svn: 280524
Previously, we created temporary files using llvm::sys::fs::createTemporaryFile
and removed them using llvm::FileRemover. This is error-prone as it is easy to
forget creating FileRemover instances after creating temporary files.
There is actually a temporary file leak bug.
This patch introduces a new class, TemporaryFile, to manage temporary files
in the RAII style.
Differential Revision: https://reviews.llvm.org/D24176
llvm-svn: 280510
Windows does not allow opened files to be removed. This patch
fixes two types of errors.
- Output file being the same as input file. Because LLD itself
holds a file descriptor of the input file, it cannot create an
output file with the same name as a new file.
- Removing files before releasing MemoryBuffer objects.
These tests are not failing no because MemoryBuffer happens to
decide not to use mmap on these files. But we shouldn't rely on
that behavior.
llvm-svn: 280507
Both bfd and gold accept:
foo = 1K;
bar = 1M;
zed = 1H;
And lowercase forms: k, m, h.
Patch adds support for that.
Differential revision: https://reviews.llvm.org/D24194
llvm-svn: 280494
FreeBSD's libstdc++ build (used on tier-2 architectures) uses GNU ld's
-f <name> option, which sets the DT_AUXILIARY field to the specified name.
Multiple -f options may be specified and the DT_AUXILIARY entries
will be added in the order in which they appear.
Patch implements that option.
Differential revision: https://reviews.llvm.org/D24139
llvm-svn: 280475
The primary use of build-id is in debugging, hence omitting debug
sections when computing it significantly reduces its usability as
changes in debug section content wouldn't alter the build-id.
Differential Revision: https://reviews.llvm.org/D24120
llvm-svn: 280421
This is what InputSectionBase<ELFT>::relocate does and we need to be
consistent. The other option would be to be more explicit about which
relocations are signed and which are not, and sign extend only when
appropriated. That would require extending the target interface.
llvm-svn: 280366
George Rimar