//=== MachORelocation.h - Mach-O Relocation Info ----------------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This file defines the MachORelocation class. // //===----------------------------------------------------------------------===// #ifndef LLVM_CODEGEN_MACHO_RELOCATION_H #define LLVM_CODEGEN_MACHO_RELOCATION_H namespace llvm { /// MachORelocation - This struct contains information about each relocation /// that needs to be emitted to the file. /// see <mach-o/reloc.h> class MachORelocation { uint32_t r_address; // offset in the section to what is being relocated uint32_t r_symbolnum; // symbol index if r_extern == 1 else section index bool r_pcrel; // was relocated pc-relative already uint8_t r_length; // length = 2 ^ r_length bool r_extern; // uint8_t r_type; // if not 0, machine-specific relocation type. bool r_scattered; // 1 = scattered, 0 = non-scattered int32_t r_value; // the value the item to be relocated is referring // to. public: uint32_t getPackedFields() const { if (r_scattered) return (1 << 31) | (r_pcrel << 30) | ((r_length & 3) << 28) | ((r_type & 15) << 24) | (r_address & 0x00FFFFFF); else return (r_symbolnum << 8) | (r_pcrel << 7) | ((r_length & 3) << 5) | (r_extern << 4) | (r_type & 15); } uint32_t getAddress() const { return r_scattered ? r_value : r_address; } uint32_t getRawAddress() const { return r_address; } MachORelocation(uint32_t addr, uint32_t index, bool pcrel, uint8_t len, bool ext, uint8_t type, bool scattered = false, int32_t value = 0) : r_address(addr), r_symbolnum(index), r_pcrel(pcrel), r_length(len), r_extern(ext), r_type(type), r_scattered(scattered), r_value(value) {} }; } // end llvm namespace #endif // LLVM_CODEGEN_MACHO_RELOCATION_H