Use R_X86_64_32S to handle Jump Table Index relocation entries. Hide TAI usage inside getSection* functions
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76347 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/ELFWriter.cpp b/lib/CodeGen/ELFWriter.cpp
index 69220f9..527adb8 100644
--- a/lib/CodeGen/ELFWriter.cpp
+++ b/lib/CodeGen/ELFWriter.cpp
@@ -145,6 +145,24 @@
return false;
}
+/// Get jump table section on the section name returned by TAI
+ELFSection &ELFWriter::getJumpTableSection() {
+ unsigned Align = TM.getTargetData()->getPointerABIAlignment();
+ return getSection(TAI->getJumpTableDataSection(),
+ ELFSection::SHT_PROGBITS,
+ ELFSection::SHF_ALLOC, Align);
+}
+
+/// Get a constant pool section based on the section name returned by TAI
+ELFSection &ELFWriter::getConstantPoolSection(MachineConstantPoolEntry &CPE) {
+ std::string CstPoolName =
+ TAI->SelectSectionForMachineConst(CPE.getType())->getName();
+ return getSection(CstPoolName,
+ ELFSection::SHT_PROGBITS,
+ ELFSection::SHF_MERGE | ELFSection::SHF_ALLOC,
+ CPE.getAlignment());
+}
+
// getGlobalELFVisibility - Returns the ELF specific visibility type
unsigned ELFWriter::getGlobalELFVisibility(const GlobalValue *GV) {
switch (GV->getVisibility()) {
@@ -513,9 +531,14 @@
Addend = TEW->getDefaultAddendForRelTy(RelType);
}
} else {
- // Get the symbol index for the section symbol referenced
- // by the relocation
+ // Get the symbol index for the section symbol
unsigned SectionIdx = MR.getConstantVal();
+
+ // Handle Jump Table Index relocation
+ if ((SectionIdx == getJumpTableSection().SectionIdx) &&
+ TEW->hasCustomJumpTableIndexRelTy())
+ RelType = TEW->getJumpTableIndexRelTy();
+
SymIdx = SectionList[SectionIdx]->getSymbolTableIndex();
Addend = (uint64_t)MR.getResultPointer();
}