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Use R_X86_64_32S to handle Jump Table Index relocation entries. Hide TAI usage inside getSection* functions

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76347 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bruno Cardoso Lopes
2009-07-18 23:24:01 +00:00
parent edcb540496
commit e2b0ecd8be
6 changed files with 54 additions and 29 deletions
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lib/CodeGen/ELFCodeEmitter.cpp
+6 -15
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@@ -101,8 +101,8 @@ bool ELFCodeEmitter::finishFunction(MachineFunction &MF) {
MR.setResultPointer((void*)Addr);
} else if (MR.isJumpTableIndex()) {
Addr = getJumpTableEntryAddress(MR.getJumpTableIndex());
MR.setResultPointer((void*)Addr);
MR.setConstantVal(JumpTableSectionIdx);
MR.setResultPointer((void*)Addr);
} else {
llvm_unreachable("Unhandled relocation type");
}
@@ -128,25 +128,19 @@ void ELFCodeEmitter::emitConstantPool(MachineConstantPool *MCP) {
assert(TM.getRelocationModel() != Reloc::PIC_ &&
"PIC codegen not yet handled for elf constant pools!");
const TargetAsmInfo *TAI = TM.getTargetAsmInfo();
for (unsigned i = 0, e = CP.size(); i != e; ++i) {
MachineConstantPoolEntry CPE = CP[i];
// Get the right ELF Section for this constant pool entry
std::string CstPoolName =
TAI->SelectSectionForMachineConst(CPE.getType())->getName();
ELFSection &CstPoolSection =
EW.getConstantPoolSection(CstPoolName, CPE.getAlignment());
// Record the constant pool location and the section index
CPLocations.push_back(CstPoolSection.size());
CPSections.push_back(CstPoolSection.SectionIdx);
ELFSection &CstPool = EW.getConstantPoolSection(CPE);
CPLocations.push_back(CstPool.size());
CPSections.push_back(CstPool.SectionIdx);
if (CPE.isMachineConstantPoolEntry())
assert("CPE.isMachineConstantPoolEntry not supported yet");
// Emit the constant to constant pool section
EW.EmitGlobalConstant(CPE.Val.ConstVal, CstPoolSection);
EW.EmitGlobalConstant(CPE.Val.ConstVal, CstPool);
}
}
@@ -160,13 +154,10 @@ void ELFCodeEmitter::emitJumpTables(MachineJumpTableInfo *MJTI) {
assert(TM.getRelocationModel() != Reloc::PIC_ &&
"PIC codegen not yet handled for elf jump tables!");
const TargetAsmInfo *TAI = TM.getTargetAsmInfo();
const TargetELFWriterInfo *TEW = TM.getELFWriterInfo();
// Get the ELF Section to emit the jump table
unsigned Align = TM.getTargetData()->getPointerABIAlignment();
std::string JTName(TAI->getJumpTableDataSection());
ELFSection &JTSection = EW.getJumpTableSection(JTName, Align);
ELFSection &JTSection = EW.getJumpTableSection();
JumpTableSectionIdx = JTSection.SectionIdx;
// Entries in the JT Section are relocated against the text section