Ulrich Weigand 68b292b026 [PowerPC] ELFv2 dynamic loader support ...

This patch enables the new ELFv2 ABI in the runtime dynamic loader.
The loader has to implement the following features:
- In the ELFv2 ABI, do not look up a function descriptor in .opd, but
  instead use the local entry point when resolving a direct call.
- Update the TOC restore code to use the new TOC slot linkage area
  offset.
- Create PLT stubs appropriate for the ELFv2 ABI.

Note that this patch also adds common-code changes. These are necessary
because the loader must check the newly added ELF flags: the e_flags
header bits encoding the ABI version, and the st_other symbol table
entry bits encoding the local entry point offset.  There is currently
no way to access these, so I've added ObjectFile::getPlatformFlags and
SymbolRef::getOther accessors.

Reviewed by Hal Finkel.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213491 91177308-0d34-0410-b5e6-96231b3b80d8

2014-07-20 23:53:14 +00:00

..

llvm

[PowerPC] ELFv2 dynamic loader support

2014-07-20 23:53:14 +00:00

llvm-c

MergedLoadStoreMotion pass

2014-07-18 19:13:09 +00:00