//===----------------------------------------------------------------------===//
#include "PPC.h"
+#include "MCTargetDesc/PPCMCExpr.h"
+#include "PPCSubtarget.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/Twine.h"
#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/MachineBasicBlock.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineModuleInfoImpls.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/GlobalValue.h"
+#include "llvm/IR/Mangler.h"
+#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
+#include "llvm/Target/TargetLowering.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
using namespace llvm;
+static MachineModuleInfoMachO &getMachOMMI(AsmPrinter &AP) {
+ return AP.MMI->getObjFileInfo<MachineModuleInfoMachO>();
+}
+
+
+static MCSymbol *GetSymbolFromOperand(const MachineOperand &MO, AsmPrinter &AP){
+ const TargetMachine &TM = AP.TM;
+ Mangler *Mang = AP.Mang;
+ const DataLayout *DL = TM.getDataLayout();
+ MCContext &Ctx = AP.OutContext;
+ bool isDarwin = Triple(TM.getTargetTriple()).isOSDarwin();
+
+ SmallString<128> Name;
+ StringRef Suffix;
+ if (MO.getTargetFlags() == PPCII::MO_PLT_OR_STUB) {
+ if (isDarwin)
+ Suffix = "$stub";
+ } else if (MO.getTargetFlags() & PPCII::MO_NLP_FLAG)
+ Suffix = "$non_lazy_ptr";
+
+ if (!Suffix.empty())
+ Name += DL->getPrivateGlobalPrefix();
+
+ unsigned PrefixLen = Name.size();
+
+ if (!MO.isGlobal()) {
+ assert(MO.isSymbol() && "Isn't a symbol reference");
+ Mang->getNameWithPrefix(Name, MO.getSymbolName());
+ } else {
+ const GlobalValue *GV = MO.getGlobal();
+ TM.getNameWithPrefix(Name, GV, *Mang);
+ }
+
+ unsigned OrigLen = Name.size() - PrefixLen;
+
+ Name += Suffix;
+ MCSymbol *Sym = Ctx.getOrCreateSymbol(Name);
+ StringRef OrigName = StringRef(Name).substr(PrefixLen, OrigLen);
+
+ // 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_PLT_OR_STUB && isDarwin) {
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ getMachOMMI(AP).getFnStubEntry(Sym);
+ if (StubSym.getPointer())
+ return Sym;
+
+ if (MO.isGlobal()) {
+ StubSym =
+ MachineModuleInfoImpl::
+ StubValueTy(AP.getSymbol(MO.getGlobal()),
+ !MO.getGlobal()->hasInternalLinkage());
+ } else {
+ StubSym =
+ MachineModuleInfoImpl::
+ StubValueTy(Ctx.getOrCreateSymbol(OrigName), 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) {
+ MachineModuleInfoMachO &MachO = getMachOMMI(AP);
+
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ (MO.getTargetFlags() & PPCII::MO_NLP_HIDDEN_FLAG) ?
+ MachO.getHiddenGVStubEntry(Sym) : MachO.getGVStubEntry(Sym);
+
+ if (!StubSym.getPointer()) {
+ assert(MO.isGlobal() && "Extern symbol not handled yet");
+ StubSym = MachineModuleInfoImpl::
+ StubValueTy(AP.getSymbol(MO.getGlobal()),
+ !MO.getGlobal()->hasInternalLinkage());
+ }
+ return Sym;
+ }
+
+ return Sym;
+}
+
+static MCOperand GetSymbolRef(const MachineOperand &MO, const MCSymbol *Symbol,
+ AsmPrinter &Printer, bool isDarwin) {
+ MCContext &Ctx = Printer.OutContext;
+ MCSymbolRefExpr::VariantKind RefKind = MCSymbolRefExpr::VK_None;
+
+ unsigned access = MO.getTargetFlags() & PPCII::MO_ACCESS_MASK;
+
+ switch (access) {
+ case PPCII::MO_TPREL_LO:
+ RefKind = MCSymbolRefExpr::VK_PPC_TPREL_LO;
+ break;
+ case PPCII::MO_TPREL_HA:
+ RefKind = MCSymbolRefExpr::VK_PPC_TPREL_HA;
+ break;
+ case PPCII::MO_DTPREL_LO:
+ RefKind = MCSymbolRefExpr::VK_PPC_DTPREL_LO;
+ break;
+ case PPCII::MO_TLSLD_LO:
+ RefKind = MCSymbolRefExpr::VK_PPC_GOT_TLSLD_LO;
+ break;
+ case PPCII::MO_TOC_LO:
+ RefKind = MCSymbolRefExpr::VK_PPC_TOC_LO;
+ break;
+ case PPCII::MO_TLS:
+ RefKind = MCSymbolRefExpr::VK_PPC_TLS;
+ break;
+ }
+
+ if (MO.getTargetFlags() == PPCII::MO_PLT_OR_STUB && !isDarwin)
+ RefKind = MCSymbolRefExpr::VK_PLT;
+
+ const MCExpr *Expr = MCSymbolRefExpr::create(Symbol, RefKind, Ctx);
+
+ if (!MO.isJTI() && MO.getOffset())
+ Expr = MCBinaryExpr::createAdd(Expr,
+ MCConstantExpr::create(MO.getOffset(), Ctx),
+ Ctx);
+
+ // 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);
+ }
+
+ // Add ha16() / lo16() markers if required.
+ switch (access) {
+ case PPCII::MO_LO:
+ Expr = PPCMCExpr::createLo(Expr, isDarwin, Ctx);
+ break;
+ case PPCII::MO_HA:
+ Expr = PPCMCExpr::createHa(Expr, isDarwin, Ctx);
+ break;
+ }
+
+ return MCOperand::createExpr(Expr);
+}
+
void llvm::LowerPPCMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
- AsmPrinter &Printer) {
+ 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());
+ assert(MO.getReg() > PPC::NoRegister &&
+ MO.getReg() < PPC::NUM_TARGET_REGS &&
+ "Invalid register for this target!");
+ MCOp = MCOperand::createReg(MO.getReg());
break;
case MachineOperand::MO_Immediate:
- MCOp = MCOperand::CreateImm(MO.getImm());
+ MCOp = MCOperand::createImm(MO.getImm());
+ break;
+ case MachineOperand::MO_MachineBasicBlock:
+ MCOp = MCOperand::createExpr(MCSymbolRefExpr::create(
+ MO.getMBB()->getSymbol(), AP.OutContext));
+ break;
+ case MachineOperand::MO_GlobalAddress:
+ case MachineOperand::MO_ExternalSymbol:
+ MCOp = GetSymbolRef(MO, GetSymbolFromOperand(MO, AP), AP, isDarwin);
+ break;
+ case MachineOperand::MO_JumpTableIndex:
+ MCOp = GetSymbolRef(MO, AP.GetJTISymbol(MO.getIndex()), AP, isDarwin);
+ break;
+ case MachineOperand::MO_ConstantPoolIndex:
+ MCOp = GetSymbolRef(MO, AP.GetCPISymbol(MO.getIndex()), AP, isDarwin);
+ break;
+ case MachineOperand::MO_BlockAddress:
+ MCOp = GetSymbolRef(MO,AP.GetBlockAddressSymbol(MO.getBlockAddress()),AP,
+ isDarwin);
break;
+ case MachineOperand::MO_RegisterMask:
+ continue;
}
OutMI.addOperand(MCOp);
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