- // Special encoding for MTCRF and MFOCRF, which uses a bit mask for the
- // register, not the register number directly.
- if ((MI.getOpcode() == PPC::MTCRF || MI.getOpcode() == PPC::MFOCRF) &&
- (MO.getReg() >= PPC::CR0 && MO.getReg() <= PPC::CR7)) {
- rv = 0x80 >> rv;
- }
- } else if (MO.isImmediate()) {
- rv = MO.getImm();
- } else if (MO.isGlobalAddress() || MO.isExternalSymbol() ||
- MO.isConstantPoolIndex() || MO.isJumpTableIndex()) {
- unsigned Reloc = 0;
- if (MI.getOpcode() == PPC::BL_Macho || MI.getOpcode() == PPC::BL8_Macho ||
- MI.getOpcode() == PPC::BL_ELF || MI.getOpcode() == PPC::BL8_ELF ||
- MI.getOpcode() == PPC::TAILB || MI.getOpcode() == PPC::TAILB8)
- Reloc = PPC::reloc_pcrel_bx;
- else {
- if (TM.getRelocationModel() == Reloc::PIC_) {
- assert(MovePCtoLROffset && "MovePCtoLR not seen yet?");
- }
- switch (MI.getOpcode()) {
- default: MI.dump(); assert(0 && "Unknown instruction for relocation!");
- case PPC::LIS:
- case PPC::LIS8:
- case PPC::ADDIS:
- case PPC::ADDIS8:
- Reloc = PPC::reloc_absolute_high; // Pointer to symbol
- break;
- case PPC::LI:
- case PPC::LI8:
- case PPC::LA:
- // Loads.
- case PPC::LBZ:
- case PPC::LBZ8:
- case PPC::LHA:
- case PPC::LHA8:
- case PPC::LHZ:
- case PPC::LHZ8:
- case PPC::LWZ:
- case PPC::LWZ8:
- case PPC::LFS:
- case PPC::LFD:
-
- // Stores.
- case PPC::STB:
- case PPC::STB8:
- case PPC::STH:
- case PPC::STH8:
- case PPC::STW:
- case PPC::STW8:
- case PPC::STFS:
- case PPC::STFD:
- Reloc = PPC::reloc_absolute_low;
- break;
-
- case PPC::LWA:
- case PPC::LD:
- case PPC::STD:
- case PPC::STD_32:
- Reloc = PPC::reloc_absolute_low_ix;
- break;
- }
- }
-
- MachineRelocation R;
- if (MO.isGlobalAddress()) {
- R = MachineRelocation::getGV(MCE.getCurrentPCOffset(), Reloc,
- MO.getGlobal(), 0,
- isa<Function>(MO.getGlobal()));
- } else if (MO.isExternalSymbol()) {
- R = MachineRelocation::getExtSym(MCE.getCurrentPCOffset(),
- Reloc, MO.getSymbolName(), 0);
- } else if (MO.isConstantPoolIndex()) {
- R = MachineRelocation::getConstPool(MCE.getCurrentPCOffset(),
- Reloc, MO.getIndex(), 0);
- } else {
- assert(MO.isJumpTableIndex());
- R = MachineRelocation::getJumpTable(MCE.getCurrentPCOffset(),
- Reloc, MO.getIndex(), 0);
- }
-
- // If in PIC mode, we need to encode the negated address of the
- // 'movepctolr' into the unrelocated field. After relocation, we'll have
- // &gv-&movepctolr-4 in the imm field. Once &movepctolr is added to the imm
- // field, we get &gv. This doesn't happen for branch relocations, which are
- // always implicitly pc relative.
- if (TM.getRelocationModel() == Reloc::PIC_ && Reloc != PPC::reloc_pcrel_bx){
- assert(MovePCtoLROffset && "MovePCtoLR not seen yet?");
- R.setConstantVal(-(intptr_t)MovePCtoLROffset - 4);
- }
- MCE.addRelocation(R);
-
- } else if (MO.isMachineBasicBlock()) {
- unsigned Reloc = 0;
- unsigned Opcode = MI.getOpcode();
- if (Opcode == PPC::B || Opcode == PPC::BL_Macho ||
- Opcode == PPC::BLA_Macho || Opcode == PPC::BL_ELF ||
- Opcode == PPC::BLA_ELF)
- Reloc = PPC::reloc_pcrel_bx;
- else // BCC instruction
- Reloc = PPC::reloc_pcrel_bcx;
- MCE.addRelocation(MachineRelocation::getBB(MCE.getCurrentPCOffset(),
- Reloc, MO.getMBB()));
- } else {
- cerr << "ERROR: Unknown type of MachineOperand: " << MO << "\n";
- abort();
+ if (MO.isMBB())
+ return MachineRelocation::getBB(MCE.getCurrentPCOffset(),
+ RelocID, MO.getMBB());
+
+ assert(MO.isJTI());
+ return MachineRelocation::getJumpTable(MCE.getCurrentPCOffset(),
+ RelocID, MO.getIndex(), Cst);
+}
+
+unsigned PPCCodeEmitter::getDirectBrEncoding(const MachineInstr &MI,
+ unsigned OpNo) const {
+ const MachineOperand &MO = MI.getOperand(OpNo);
+ if (MO.isReg() || MO.isImm()) return getMachineOpValue(MI, MO);
+
+ MCE.addRelocation(GetRelocation(MO, PPC::reloc_pcrel_bx));
+ return 0;
+}
+
+unsigned PPCCodeEmitter::getCondBrEncoding(const MachineInstr &MI,
+ unsigned OpNo) const {
+ const MachineOperand &MO = MI.getOperand(OpNo);
+ MCE.addRelocation(GetRelocation(MO, PPC::reloc_pcrel_bcx));
+ return 0;
+}
+
+unsigned PPCCodeEmitter::getAbsDirectBrEncoding(const MachineInstr &MI,
+ unsigned OpNo) const {
+ const MachineOperand &MO = MI.getOperand(OpNo);
+ if (MO.isReg() || MO.isImm()) return getMachineOpValue(MI, MO);
+
+ llvm_unreachable("Absolute branch relocations unsupported on the old JIT.");
+}
+
+unsigned PPCCodeEmitter::getAbsCondBrEncoding(const MachineInstr &MI,
+ unsigned OpNo) const {
+ llvm_unreachable("Absolute branch relocations unsupported on the old JIT.");
+}
+
+unsigned PPCCodeEmitter::getImm16Encoding(const MachineInstr &MI,
+ unsigned OpNo) const {
+ const MachineOperand &MO = MI.getOperand(OpNo);
+ if (MO.isReg() || MO.isImm()) return getMachineOpValue(MI, MO);
+
+ unsigned RelocID;
+ switch (MO.getTargetFlags() & PPCII::MO_ACCESS_MASK) {
+ default: llvm_unreachable("Unsupported target operand flags!");
+ case PPCII::MO_LO: RelocID = PPC::reloc_absolute_low; break;
+ case PPCII::MO_HA: RelocID = PPC::reloc_absolute_high; break;