tree d9d0b387953e07569325ce5478ee3f997fb9bb9a
parent a76b44f79161296990ba3eb901d9ca5034f245ac
author Peter Collingbourne <peter@pcc.me.uk> 1559930278 +0000
committer Peter Collingbourne <peter@pcc.me.uk> 1559930278 +0000

ELF: Create synthetic sections for loadable partitions.

We create several types of synthetic sections for loadable partitions, including:
- The dynamic symbol table. This allows code outside of the loadable partitions
  to find entry points with dlsym.
- Creating a dynamic symbol table also requires the creation of several other
  synthetic sections for the partition, such as the dynamic table and hash table
  sections.
- The partition's ELF header is represented as a synthetic section in the
  combined output file, and will be used by llvm-objcopy to extract partitions.

Differential Revision: https://reviews.llvm.org/D62350

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@362819 91177308-0d34-0410-b5e6-96231b3b80d8