1 //===-- llvm/MC/MCModule.h - MCModule class ---------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file contains the declaration of the MCModule class, which is used to 11 // represent a complete, disassembled object file or executable. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_MC_MCMODULE_H 16 #define LLVM_MC_MCMODULE_H 17 18 #include "llvm/ADT/DenseMap.h" 19 #include "llvm/ADT/IntervalMap.h" 20 #include "llvm/ADT/SmallPtrSet.h" 21 #include "llvm/Support/DataTypes.h" 22 23 namespace llvm { 24 25 class MCAtom; 26 27 /// MCModule - This class represent a completely disassembled object file or 28 /// executable. It comprises a list of MCAtom's, and a branch target table. 29 /// Each atom represents a contiguous range of either instructions or data. 30 class MCModule { 31 /// AtomAllocationTracker - An MCModule owns its component MCAtom's, so it 32 /// must track them in order to ensure they are properly freed as atoms are 33 /// merged or otherwise manipulated. 34 SmallPtrSet<MCAtom*, 8> AtomAllocationTracker; 35 36 /// OffsetMap - Efficiently maps offset ranges to MCAtom's. 37 IntervalMap<uint64_t, MCAtom*> OffsetMap; 38 39 /// BranchTargetMap - Maps offsets that are determined to be branches and 40 /// can be statically resolved to their target offsets. 41 DenseMap<uint64_t, MCAtom*> BranchTargetMap; 42 43 friend class MCAtom; 44 45 /// remap - Update the interval mapping for an MCAtom. 46 void remap(MCAtom *Atom, uint64_t NewBegin, uint64_t NewEnd); 47 48 public: 49 MCModule(IntervalMap<uint64_t, MCAtom*>::Allocator &A) : OffsetMap(A) { } 50 51 /// createAtom - Creates a new MCAtom covering the specified offset range. 52 MCAtom *createAtom(MCAtom::AtomType Type, uint64_t Begin, uint64_t End); 53 }; 54 55 } 56 57 #endif 58 59
