| //===-- MachOEmitter.h - Target-independent Mach-O Emitter class ----------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef MACHOCODEEMITTER_H |
| #define MACHOCODEEMITTER_H |
| |
| #include "llvm/CodeGen/ObjectCodeEmitter.h" |
| #include <map> |
| |
| namespace llvm { |
| |
| class MachOWriter; |
| |
| /// MachOCodeEmitter - This class is used by the MachOWriter to emit the code |
| /// for functions to the Mach-O file. |
| |
| class MachOCodeEmitter : public ObjectCodeEmitter { |
| MachOWriter &MOW; |
| |
| /// Target machine description. |
| TargetMachine &TM; |
| |
| /// is64Bit/isLittleEndian - This information is inferred from the target |
| /// machine directly, indicating what header values and flags to set. |
| bool is64Bit, isLittleEndian; |
| |
| const MCAsmInfo *MAI; |
| |
| /// Relocations - These are the relocations that the function needs, as |
| /// emitted. |
| std::vector<MachineRelocation> Relocations; |
| |
| std::map<uint64_t, uintptr_t> Labels; |
| |
| public: |
| MachOCodeEmitter(MachOWriter &mow, MachOSection &mos); |
| |
| virtual void startFunction(MachineFunction &MF); |
| virtual bool finishFunction(MachineFunction &MF); |
| |
| virtual void addRelocation(const MachineRelocation &MR) { |
| Relocations.push_back(MR); |
| } |
| |
| void emitConstantPool(MachineConstantPool *MCP); |
| void emitJumpTables(MachineJumpTableInfo *MJTI); |
| |
| virtual void emitLabel(uint64_t LabelID) { |
| Labels[LabelID] = getCurrentPCOffset(); |
| } |
| |
| virtual uintptr_t getLabelAddress(uint64_t Label) const { |
| return Labels.find(Label)->second; |
| } |
| |
| virtual void setModuleInfo(llvm::MachineModuleInfo* MMI) { } |
| |
| }; // end class MachOCodeEmitter |
| |
| } // end namespace llvm |
| |
| #endif |
| |