#include "PPC.h"
#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/MachineBasicBlock.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineModuleInfoImpls.h"
+#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
#include "llvm/Target/Mangler.h"
+#include "llvm/ADT/SmallString.h"
using namespace llvm;
+static MachineModuleInfoMachO &getMachOMMI(AsmPrinter &AP) {
+ return AP.MMI->getObjFileInfo<MachineModuleInfoMachO>();
+}
+
+
+static MCSymbol *GetSymbolFromOperand(const MachineOperand &MO, AsmPrinter &AP){
+ MCContext &Ctx = AP.OutContext;
+
+ SmallString<128> Name;
+ if (!MO.isGlobal()) {
+ assert(MO.isSymbol() && "Isn't a symbol reference");
+ Name += AP.MAI->getGlobalPrefix();
+ Name += MO.getSymbolName();
+ } else {
+ const GlobalValue *GV = MO.getGlobal();
+ bool isImplicitlyPrivate = false;
+ if (MO.getTargetFlags() == PPCII::MO_DARWIN_STUB ||
+ (MO.getTargetFlags() & PPCII::MO_NLP_FLAG))
+ isImplicitlyPrivate = true;
+
+ AP.Mang->getNameWithPrefix(Name, GV, isImplicitlyPrivate);
+ }
+
+ // If the target flags on the operand changes the name of the symbol, do that
+ // before we return the symbol.
+ if (MO.getTargetFlags() == PPCII::MO_DARWIN_STUB) {
+ Name += "$stub";
+ MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str());
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ getMachOMMI(AP).getFnStubEntry(Sym);
+ if (StubSym.getPointer())
+ return Sym;
+
+ if (MO.isGlobal()) {
+ StubSym =
+ MachineModuleInfoImpl::
+ StubValueTy(AP.Mang->getSymbol(MO.getGlobal()),
+ !MO.getGlobal()->hasInternalLinkage());
+ } else {
+ Name.erase(Name.end()-5, Name.end());
+ StubSym =
+ MachineModuleInfoImpl::
+ StubValueTy(Ctx.GetOrCreateSymbol(Name.str()), false);
+ }
+ return Sym;
+ }
+
+ // If the symbol reference is actually to a non_lazy_ptr, not to the symbol,
+ // then add the suffix.
+ if (MO.getTargetFlags() & PPCII::MO_NLP_FLAG) {
+ Name += "$non_lazy_ptr";
+ MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str());
+
+ MachineModuleInfoMachO &MachO = getMachOMMI(AP);
+
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ (MO.getTargetFlags() & PPCII::MO_NLP_HIDDEN_FLAG) ?
+ MachO.getHiddenGVStubEntry(Sym) : MachO.getGVStubEntry(Sym);
+
+ if (StubSym.getPointer() == 0) {
+ assert(MO.isGlobal() && "Extern symbol not handled yet");
+ StubSym = MachineModuleInfoImpl::
+ StubValueTy(AP.Mang->getSymbol(MO.getGlobal()),
+ !MO.getGlobal()->hasInternalLinkage());
+ }
+ return Sym;
+ }
+
+ return Ctx.GetOrCreateSymbol(Name.str());
+}
+
static MCOperand GetSymbolRef(const MachineOperand &MO, const MCSymbol *Symbol,
- AsmPrinter &Printer) {
+ AsmPrinter &Printer, bool isDarwin) {
MCContext &Ctx = Printer.OutContext;
- const MCExpr *Expr;
- switch (MO.getTargetFlags()) {
- default: assert(0 && "Unknown target flag on symbol operand");
- case 0:
- Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_None, Ctx);
- break;
-#if 0
- case ARMII::MO_LO16:
- Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_ARM_LO16, Ctx);
- break;
-#endif
- }
+ MCSymbolRefExpr::VariantKind RefKind = MCSymbolRefExpr::VK_None;
+
+ unsigned access = MO.getTargetFlags() & PPCII::MO_ACCESS_MASK;
+
+ switch (access) {
+ case PPCII::MO_HA16: RefKind = isDarwin ?
+ MCSymbolRefExpr::VK_PPC_DARWIN_HA16 :
+ MCSymbolRefExpr::VK_PPC_GAS_HA16;
+ break;
+ case PPCII::MO_LO16: RefKind = isDarwin ?
+ MCSymbolRefExpr::VK_PPC_DARWIN_LO16 :
+ MCSymbolRefExpr::VK_PPC_GAS_LO16;
+ break;
+ case PPCII::MO_TPREL16_HA: RefKind = MCSymbolRefExpr::VK_PPC_TPREL16_HA;
+ break;
+ case PPCII::MO_TPREL16_LO: RefKind = MCSymbolRefExpr::VK_PPC_TPREL16_LO;
+ break;
+ }
+
+ // FIXME: This isn't right, but we don't have a good way to express this in
+ // the MC Level, see below.
+ if (MO.getTargetFlags() & PPCII::MO_PIC_FLAG)
+ RefKind = MCSymbolRefExpr::VK_None;
+ const MCExpr *Expr = MCSymbolRefExpr::Create(Symbol, RefKind, Ctx);
+
if (!MO.isJTI() && MO.getOffset())
Expr = MCBinaryExpr::CreateAdd(Expr,
MCConstantExpr::Create(MO.getOffset(), Ctx),
Ctx);
- return MCOperand::CreateExpr(Expr);
+
+ // Subtract off the PIC base if required.
+ if (MO.getTargetFlags() & PPCII::MO_PIC_FLAG) {
+ const MachineFunction *MF = MO.getParent()->getParent()->getParent();
+
+ const MCExpr *PB = MCSymbolRefExpr::Create(MF->getPICBaseSymbol(), Ctx);
+ Expr = MCBinaryExpr::CreateSub(Expr, PB, Ctx);
+ // FIXME: We have no way to make the result be VK_PPC_LO16/VK_PPC_HA16,
+ // since it is not a symbol!
+ }
+ return MCOperand::CreateExpr(Expr);
}
void llvm::LowerPPCMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
- AsmPrinter &AP) {
+ AsmPrinter &AP, bool isDarwin) {
OutMI.setOpcode(MI->getOpcode());
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
switch (MO.getType()) {
default:
MI->dump();
- assert(0 && "unknown operand type");
+ llvm_unreachable("unknown operand type");
case MachineOperand::MO_Register:
assert(!MO.getSubReg() && "Subregs should be eliminated!");
MCOp = MCOperand::CreateReg(MO.getReg());
MO.getMBB()->getSymbol(), AP.OutContext));
break;
case MachineOperand::MO_GlobalAddress:
- MCOp = GetSymbolRef(MO, AP.Mang->getSymbol(MO.getGlobal()), AP);
- break;
case MachineOperand::MO_ExternalSymbol:
- MCOp = GetSymbolRef(MO,
- AP.GetExternalSymbolSymbol(MO.getSymbolName()), AP);
+ MCOp = GetSymbolRef(MO, GetSymbolFromOperand(MO, AP), AP, isDarwin);
break;
case MachineOperand::MO_JumpTableIndex:
- MCOp = GetSymbolRef(MO, AP.GetJTISymbol(MO.getIndex()), AP);
+ MCOp = GetSymbolRef(MO, AP.GetJTISymbol(MO.getIndex()), AP, isDarwin);
break;
case MachineOperand::MO_ConstantPoolIndex:
- MCOp = GetSymbolRef(MO, AP.GetCPISymbol(MO.getIndex()), AP);
+ MCOp = GetSymbolRef(MO, AP.GetCPISymbol(MO.getIndex()), AP, isDarwin);
break;
case MachineOperand::MO_BlockAddress:
- MCOp = GetSymbolRef(MO,AP.GetBlockAddressSymbol(MO.getBlockAddress()),AP);
+ MCOp = GetSymbolRef(MO,AP.GetBlockAddressSymbol(MO.getBlockAddress()),AP,
+ isDarwin);
break;
+ case MachineOperand::MO_RegisterMask:
+ continue;
}
OutMI.addOperand(MCOp);
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