tree 1644dd44bc653dd53f0a087890b71fda85944206
parent 61126507beda00b852a2631fa9d9d6a5f27a9e5b
author George Rimar <grimar@accesssoftek.com> 1539246335 +0000
committer George Rimar <grimar@accesssoftek.com> 1539246335 +0000

[ELF] - Set sh_info and sh_link for .rela.plt sections.

This is https://bugs.llvm.org/show_bug.cgi?id=37538,

Currently, LLD may set both sh_link and sh_info for
.rela.plt section to zero when we have only .rela.iplt section part used.

ELF spec (https://docs.oracle.com/cd/E19683-01/816-1386/chapter6-94076/index.html)
says that for SHT_REL and SHT_RELA, sh_link references the associated symbol table
and sh_info the "section to which the relocation applies."

When we set the sh_link field, for the regular case we use the .dynsym index.
For .rela.iplt sections, it is unclear what is the associated symbol table,
because R_*_RELATIVE relocations do not use symbol names and we might have no
.dynsym section at all so this patch uses .symtab section index.

Differential revision: https://reviews.llvm.org/D52830

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@344226 91177308-0d34-0410-b5e6-96231b3b80d8