llvm-svn: 203017

llvm-svn: 203004

llvm-svn: 203003

llvm-svn: 202998

Just like x86 exception handler table, the table for x64 needs to be sorted
so that runtime can binary search on it. Unlike x86, the table entry for x64
has multiple fields, and they need to be sorted according to its BeginAddress
field. This patch also fixes a bug in relocations.

llvm-svn: 202874

Allows removing #include's in LLVM while switching to std::unique_ptr.

llvm-svn: 202679

llvm-svn: 202645

llvm-svn: 202638

using MSVC 2012 or newer.

llvm-svn: 202627

requiring MSVC 2012 or newer.

llvm-svn: 202626

for C++11 issues.

llvm-svn: 202623

C++11. I'm not sure that this is a good idea, but I know some crazy
folks on the core working group who like to live dangerously, and they
should still be able to build LLD. =D

llvm-svn: 202568

It looks like the contents of the table need to be sorted according to its
value, so that the runtime can find the entry by binary search. I'm not 100%
sure if we really have to do that, but at least I can say it's safe to do
because the contents of .sxdata is just a list of exception handlers' RVAs.

llvm-svn: 202550

llvm-svn: 202527

This is to accomodate future changes for newer revisions of the DSP.

No change in functionality.

llvm-svn: 202350

llvm-svn: 202322

llvm-svn: 202314

llvm-svn: 202290

external relocations.

llvm-svn: 202289

llvm-svn: 202288

llvm-svn: 202287

If all input files are compatible with Structured Exception Handling, linker
is supposed to create an exectuable with a table for SEH handlers. The table
consists of exception handlers entry point addresses.

The basic idea of SEH in x86 Microsoft ABI is to list all valid entry points
of exception handlers in an read-only memory, so that an attacker cannot
override the addresses in it. In x86 ABI, data for exception handling is mostly
on stack, so it's volnerable to stack overflow attack. In order to protect
against it, Windows runtime uses the table to check a return address, to
ensure that the address is really an valid entry point for an exception handler.

Compiler emits a list of exception handler functions to .sxdata section. It
also emits a marker symbol "@feat.00" to indicate that the object is compatible
with SEH. SEH is a relatively new feature for COFF, and mixing SEH-compatible
and SEH-incompatible objects will result in an invalid executable, so is the
marker.

If all input files are compatible with SEH, LLD emits a SEH table. SEH table
needs to be pointed by Load Configuration strucutre, so when emitting a SEH
table LLD emits it too. The address of a Load Configuration will be stored to
the file header.

llvm-svn: 202248

[CMake] Use target_link_libraries(INTERFACE|PRIVATE) on CMake-2.8.12 to increase opportunity for parallel build.

target_link_libraries(INTERFACE) doesn't bring inter-target dependencies in add_library,
although final targets have dependencies to whole dependent libraries.
It makes most libraries can be built in parallel.

target_link_libraries(PRIVATE) is used to shaared library.
Each dependent library is linked to the target.so, and its user will not see its grandchildren.
For example,

  - libclang.so has sufficient libclang*.a(s).
  - c-index-test requires just only libclang.so.

FIXME: lld is tweaked minimally. Adding INTERFACE in each library would be better thing.
llvm-svn: 202241

For now, use both keywords, INTERFACE and PRIVATE via the variable,
  - ${cmake_2_8_12_INTERFACE}
  - ${cmake_2_8_12_PRIVATE}

They could be cleaned up when we introduce 2.8.12.

llvm-svn: 202239

Please give LLVMObject explicitly in each subdirectory if any of subdirectories required it.

llvm-svn: 202236

llvm-svn: 202235

llvm-svn: 202217

IMAGE_DLL_CHARACTERISTICS_NO_SEH flag should be set only when SEH is disabled.

llvm-svn: 202215

llvm-svn: 202166

llvm-svn: 202113

llvm-svn: 202111

llvm-svn: 202101

llvm-svn: 202100

This restores the debug output to how it was before r197727 broke it. This
went undetected because the corresponding test was never run due to broken
feature detection.

llvm-svn: 202079

llvm-svn: 202078

llvm-svn: 202054

llvm-svn: 202039

llvm-svn: 201970

[CMake] add_lld_library: link_system_libs is not needed any more. LLVMSupport may provide dependencies to system libs.

llvm-svn: 201967

LLD now prints an error message if /SAFESEH option is specified and one or
more input files are not compatible with SEH.

llvm-svn: 201900