[Mips] Implement emitting of R_MIPS_REL32 relocations:

1. Re-implement PLT entries and dynamic relocations emitting to keep PLT
and relocations table in a consistent state.

2. Initialize st_value and st_other fields for dynamic symbols table
entry if this entry corresponds to an external function which address is
taken in a non-PIC executable. In that case the st_value field holds an
address of the function's PLT entry. Also set STO_MIPS_PLT bit in the
st_other field.

llvm-svn: 207494

1 files changed, 8 insertions, 1 deletions

diff --git a/lld/lib/ReaderWriter/ELF/Mips/MipsLinkingContext.cpp b/lld/lib/ReaderWriter/ELF/Mips/MipsLinkingContext.cpp
index e2c290e27f8..b4f73ed6459 100644
--- a/lld/lib/ReaderWriter/ELF/Mips/MipsLinkingContext.cpp
+++ b/lld/lib/ReaderWriter/ELF/Mips/MipsLinkingContext.cpp
@@ -50,7 +50,14 @@ bool MipsLinkingContext::isDynamicRelocation(const DefinedAtom &,
                                              const Reference &r) const {
   if (r.kindNamespace() != Reference::KindNamespace::ELF)
     return false;
-  return r.kindValue() == llvm::ELF::R_MIPS_COPY;
+  assert(r.kindArch() == Reference::KindArch::Mips);
+  switch (r.kindValue()) {
+  case llvm::ELF::R_MIPS_COPY:
+  case llvm::ELF::R_MIPS_REL32:
+    return true;
+  default:
+    return false;
+  }
 }
 
 bool MipsLinkingContext::isPLTRelocation(const DefinedAtom &,