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Implement 'large' PIC model

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76006 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov
2009-07-16 14:16:05 +00:00
parent 48e8b3cc58
commit 6fe326c713
10 changed files with 190 additions and 9 deletions
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53
lib/Target/SystemZ/AsmPrinter/SystemZAsmPrinter.cpp
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@@ -50,6 +50,7 @@ namespace {
void printOperand(const MachineInstr *MI, int OpNum,
const char* Modifier = 0);
void printPCRelImmOperand(const MachineInstr *MI, int OpNum);
void printRIAddrOperand(const MachineInstr *MI, int OpNum,
const char* Modifier = 0);
void printRRIAddrOperand(const MachineInstr *MI, int OpNum,
@@ -186,6 +187,40 @@ void SystemZAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
assert(0 && "Should not happen");
}
void SystemZAsmPrinter::printPCRelImmOperand(const MachineInstr *MI, int OpNum) {
const MachineOperand &MO = MI->getOperand(OpNum);
switch (MO.getType()) {
case MachineOperand::MO_GlobalAddress: {
const GlobalValue *GV = MO.getGlobal();
std::string Name = Mang->getValueName(GV);
O << Name;
// Assemble calls via PLT for externally visible symbols if PIC.
if (TM.getRelocationModel() == Reloc::PIC_ &&
!GV->hasHiddenVisibility() && !GV->hasProtectedVisibility() &&
!GV->hasLocalLinkage())
O << "@PLT";
printOffset(MO.getOffset());
return;
}
case MachineOperand::MO_ExternalSymbol: {
std::string Name(TAI->getGlobalPrefix());
Name += MO.getSymbolName();
O << Name;
if (TM.getRelocationModel() == Reloc::PIC_)
O << "@PLT";
return;
}
default:
assert(0 && "Not implemented yet!");
}
}
void SystemZAsmPrinter::printOperand(const MachineInstr *MI, int OpNum,
const char* Modifier) {
const MachineOperand &MO = MI->getOperand(OpNum);
@@ -219,23 +254,31 @@ void SystemZAsmPrinter::printOperand(const MachineInstr *MI, int OpNum,
return;
case MachineOperand::MO_GlobalAddress: {
const GlobalValue *GV = MO.getGlobal();
std::string Name = Mang->getValueName(GV);
assert(MO.getOffset() == 0 && "No offsets allowed!");
O << Name;
return;
break;
}
case MachineOperand::MO_ExternalSymbol: {
std::string Name(TAI->getGlobalPrefix());
Name += MO.getSymbolName();
O << Name;
return;
break;
}
default:
assert(0 && "Not implemented yet!");
}
switch (MO.getTargetFlags()) {
default:
assert(0 && "Unknown target flag on GV operand");
case SystemZII::MO_NO_FLAG:
break;
case SystemZII::MO_GOTENT: O << "@GOTENT"; break;
case SystemZII::MO_PLT: O << "@PLT"; break;
}
printOffset(MO.getOffset());
}
void SystemZAsmPrinter::printRIAddrOperand(const MachineInstr *MI, int OpNum,