MCELFObjectWriter.h revision 84070ffbe6905f31cf369ad3f6742dfa5188332c
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//===-- llvm/MC/MCELFObjectWriter.h - ELF Object Writer ---------*- C++ -*-===// 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// The LLVM Compiler Infrastructure 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This file is distributed under the University of Illinois Open Source 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// License. See LICENSE.TXT for details. 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//===----------------------------------------------------------------------===// 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#ifndef LLVM_MC_MCELFOBJECTWRITER_H 117dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#define LLVM_MC_MCELFOBJECTWRITER_H 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/MC/MCObjectWriter.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/DataTypes.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/ELF.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace llvm { 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class MCELFObjectTargetWriter { 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const uint8_t OSABI; 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const uint16_t EMachine; 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const unsigned HasRelocationAddend : 1; 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const unsigned Is64Bit : 1; 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)protected: 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MCELFObjectTargetWriter(bool Is64Bit_, uint8_t OSABI_, 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint16_t EMachine_, bool HasRelocationAddend_); 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)public: 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static uint8_t getOSABI(Triple::OSType OSType) { 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (OSType) { 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case Triple::FreeBSD: 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ELF::ELFOSABI_FREEBSD; 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case Triple::Linux: 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ELF::ELFOSABI_LINUX; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) default: 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ELF::ELFOSABI_NONE; 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~MCELFObjectTargetWriter() {} 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup, 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool IsPCRel, bool IsRelocWithSymbol, 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int64_t Addend) const = 0; 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual unsigned getEFlags() const; 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual const MCSymbol *ExplicitRelSym(const MCAssembler &Asm, 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const MCValue &Target, 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const MCFragment &F, 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const MCFixup &Fixup, 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool IsPCRel) const; 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void adjustFixupOffset(const MCFixup &Fixup, 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint64_t &RelocOffset); 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// @name Accessors 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// @{ 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint8_t getOSABI() { return OSABI; } 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint16_t getEMachine() { return EMachine; } 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool hasRelocationAddend() { return HasRelocationAddend; } 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool is64Bit() const { return Is64Bit; } 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /// @} 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// \brief Construct a new ELF writer instance. 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// \param MOTW - The target specific ELF writer subclass. 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// \param OS - The stream to write to. 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// \returns The constructed object writer. 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)MCObjectWriter *createELFObjectWriter(MCELFObjectTargetWriter *MOTW, 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) raw_ostream &OS, bool IsLittleEndian); 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // End llvm namespace 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)