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add support for PIC on linux x86-64

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52139 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2008-06-09 09:52:31 +00:00
parent 313f0e63f7
commit d674b4e87d
12 changed files with 146 additions and 12 deletions
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28
lib/Target/X86/X86ATTAsmPrinter.cpp
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@@ -197,11 +197,16 @@ bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
return false;
}
static inline bool printGOT(TargetMachine &TM, const X86Subtarget* ST) {
static inline bool shouldPrintGOT(TargetMachine &TM, const X86Subtarget* ST) {
return ST->isPICStyleGOT() && TM.getRelocationModel() == Reloc::PIC_;
}
static inline bool printStub(TargetMachine &TM, const X86Subtarget* ST) {
static inline bool shouldPrintPLT(TargetMachine &TM, const X86Subtarget* ST) {
return ST->isTargetELF() && TM.getRelocationModel() == Reloc::PIC_ &&
(ST->isPICStyleRIPRel() || ST->isPICStyleGOT());
}
static inline bool shouldPrintStub(TargetMachine &TM, const X86Subtarget* ST) {
return ST->isPICStyleStub() && TM.getRelocationModel() != Reloc::Static;
}
@@ -304,7 +309,7 @@ void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
needCloseParen = true;
}
if (printStub(TM, Subtarget)) {
if (shouldPrintStub(TM, Subtarget)) {
// Link-once, declaration, or Weakly-linked global variables need
// non-lazily-resolved stubs
if (GV->isDeclaration() ||
@@ -333,11 +338,11 @@ void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
}
O << Name;
if (isCallOp && isa<Function>(GV)) {
if (printGOT(TM, Subtarget)) {
// Assemble call via PLT for non-local symbols
if (!(GV->hasHiddenVisibility() || GV->hasProtectedVisibility()) ||
GV->isDeclaration())
if (isCallOp) {
if (shouldPrintPLT(TM, Subtarget)) {
// Assemble call via PLT for externally visible symbols
if (!GV->hasHiddenVisibility() && !GV->hasProtectedVisibility() &&
!GV->hasInternalLinkage())
O << "@PLT";
}
if (Subtarget->isTargetCygMing() && GV->isDeclaration())
@@ -364,7 +369,7 @@ void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
else
O << "@NTPOFF"; // local exec TLS model
} else if (isMemOp) {
if (printGOT(TM, Subtarget)) {
if (shouldPrintGOT(TM, Subtarget)) {
if (Subtarget->GVRequiresExtraLoad(GV, TM, false))
O << "@GOT";
else
@@ -396,7 +401,7 @@ void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
bool needCloseParen = false;
std::string Name(TAI->getGlobalPrefix());
Name += MO.getSymbolName();
if (isCallOp && printStub(TM, Subtarget)) {
if (isCallOp && shouldPrintStub(TM, Subtarget)) {
FnStubs.insert(Name);
printSuffixedName(Name, "$stub");
return;
@@ -412,7 +417,7 @@ void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
O << Name;
if (printGOT(TM, Subtarget)) {
if (shouldPrintPLT(TM, Subtarget)) {
std::string GOTName(TAI->getGlobalPrefix());
GOTName+="_GLOBAL_OFFSET_TABLE_";
if (Name == GOTName)
@@ -646,4 +651,3 @@ void X86ATTAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
// Include the auto-generated portion of the assembly writer.
#include "X86GenAsmWriter.inc"