| //===-- llvm/Support/ELF.h - ELF constants and data structures --*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This header contains common, non-processor-specific data structures and |
| // constants for the ELF file format. |
| // |
| // The details of the ELF32 bits in this file are largely based on the Tool |
| // Interface Standard (TIS) Executable and Linking Format (ELF) Specification |
| // Version 1.2, May 1995. The ELF64 stuff is based on ELF-64 Object File Format |
| // Version 1.5, Draft 2, May 1998 as well as OpenBSD header files. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_SUPPORT_ELF_H |
| #define LLVM_SUPPORT_ELF_H |
| |
| #include "llvm/Support/Compiler.h" |
| #include "llvm/Support/DataTypes.h" |
| #include <cstring> |
| |
| namespace llvm { |
| |
| namespace ELF { |
| |
| typedef uint32_t Elf32_Addr; // Program address |
| typedef uint32_t Elf32_Off; // File offset |
| typedef uint16_t Elf32_Half; |
| typedef uint32_t Elf32_Word; |
| typedef int32_t Elf32_Sword; |
| |
| typedef uint64_t Elf64_Addr; |
| typedef uint64_t Elf64_Off; |
| typedef uint16_t Elf64_Half; |
| typedef uint32_t Elf64_Word; |
| typedef int32_t Elf64_Sword; |
| typedef uint64_t Elf64_Xword; |
| typedef int64_t Elf64_Sxword; |
| |
| // Object file magic string. |
| static const char ElfMagic[] = {0x7f, 'E', 'L', 'F', '\0'}; |
| |
| // e_ident size and indices. |
| enum { |
| EI_MAG0 = 0, // File identification index. |
| EI_MAG1 = 1, // File identification index. |
| EI_MAG2 = 2, // File identification index. |
| EI_MAG3 = 3, // File identification index. |
| EI_CLASS = 4, // File class. |
| EI_DATA = 5, // Data encoding. |
| EI_VERSION = 6, // File version. |
| EI_OSABI = 7, // OS/ABI identification. |
| EI_ABIVERSION = 8, // ABI version. |
| EI_PAD = 9, // Start of padding bytes. |
| EI_NIDENT = 16 // Number of bytes in e_ident. |
| }; |
| |
| struct Elf32_Ehdr { |
| unsigned char e_ident[EI_NIDENT]; // ELF Identification bytes |
| Elf32_Half e_type; // Type of file (see ET_* below) |
| Elf32_Half e_machine; // Required architecture for this file (see EM_*) |
| Elf32_Word e_version; // Must be equal to 1 |
| Elf32_Addr e_entry; // Address to jump to in order to start program |
| Elf32_Off e_phoff; // Program header table's file offset, in bytes |
| Elf32_Off e_shoff; // Section header table's file offset, in bytes |
| Elf32_Word e_flags; // Processor-specific flags |
| Elf32_Half e_ehsize; // Size of ELF header, in bytes |
| Elf32_Half e_phentsize; // Size of an entry in the program header table |
| Elf32_Half e_phnum; // Number of entries in the program header table |
| Elf32_Half e_shentsize; // Size of an entry in the section header table |
| Elf32_Half e_shnum; // Number of entries in the section header table |
| Elf32_Half e_shstrndx; // Sect hdr table index of sect name string table |
| bool checkMagic() const { |
| return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0; |
| } |
| unsigned char getFileClass() const { return e_ident[EI_CLASS]; } |
| unsigned char getDataEncoding() const { return e_ident[EI_DATA]; } |
| }; |
| |
| // 64-bit ELF header. Fields are the same as for ELF32, but with different |
| // types (see above). |
| struct Elf64_Ehdr { |
| unsigned char e_ident[EI_NIDENT]; |
| Elf64_Half e_type; |
| Elf64_Half e_machine; |
| Elf64_Word e_version; |
| Elf64_Addr e_entry; |
| Elf64_Off e_phoff; |
| Elf64_Off e_shoff; |
| Elf64_Word e_flags; |
| Elf64_Half e_ehsize; |
| Elf64_Half e_phentsize; |
| Elf64_Half e_phnum; |
| Elf64_Half e_shentsize; |
| Elf64_Half e_shnum; |
| Elf64_Half e_shstrndx; |
| bool checkMagic() const { |
| return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0; |
| } |
| unsigned char getFileClass() const { return e_ident[EI_CLASS]; } |
| unsigned char getDataEncoding() const { return e_ident[EI_DATA]; } |
| }; |
| |
| // File types |
| enum { |
| ET_NONE = 0, // No file type |
| ET_REL = 1, // Relocatable file |
| ET_EXEC = 2, // Executable file |
| ET_DYN = 3, // Shared object file |
| ET_CORE = 4, // Core file |
| ET_LOPROC = 0xff00, // Beginning of processor-specific codes |
| ET_HIPROC = 0xffff // Processor-specific |
| }; |
| |
| // Versioning |
| enum { EV_NONE = 0, EV_CURRENT = 1 }; |
| |
| // Machine architectures |
| // See current registered ELF machine architectures at: |
| // http://www.uxsglobal.com/developers/gabi/latest/ch4.eheader.html |
| enum { |
| EM_NONE = 0, // No machine |
| EM_M32 = 1, // AT&T WE 32100 |
| EM_SPARC = 2, // SPARC |
| EM_386 = 3, // Intel 386 |
| EM_68K = 4, // Motorola 68000 |
| EM_88K = 5, // Motorola 88000 |
| EM_IAMCU = 6, // Intel MCU |
| EM_860 = 7, // Intel 80860 |
| EM_MIPS = 8, // MIPS R3000 |
| EM_S370 = 9, // IBM System/370 |
| EM_MIPS_RS3_LE = 10, // MIPS RS3000 Little-endian |
| EM_PARISC = 15, // Hewlett-Packard PA-RISC |
| EM_VPP500 = 17, // Fujitsu VPP500 |
| EM_SPARC32PLUS = 18, // Enhanced instruction set SPARC |
| EM_960 = 19, // Intel 80960 |
| EM_PPC = 20, // PowerPC |
| EM_PPC64 = 21, // PowerPC64 |
| EM_S390 = 22, // IBM System/390 |
| EM_SPU = 23, // IBM SPU/SPC |
| EM_V800 = 36, // NEC V800 |
| EM_FR20 = 37, // Fujitsu FR20 |
| EM_RH32 = 38, // TRW RH-32 |
| EM_RCE = 39, // Motorola RCE |
| EM_ARM = 40, // ARM |
| EM_ALPHA = 41, // DEC Alpha |
| EM_SH = 42, // Hitachi SH |
| EM_SPARCV9 = 43, // SPARC V9 |
| EM_TRICORE = 44, // Siemens TriCore |
| EM_ARC = 45, // Argonaut RISC Core |
| EM_H8_300 = 46, // Hitachi H8/300 |
| EM_H8_300H = 47, // Hitachi H8/300H |
| EM_H8S = 48, // Hitachi H8S |
| EM_H8_500 = 49, // Hitachi H8/500 |
| EM_IA_64 = 50, // Intel IA-64 processor architecture |
| EM_MIPS_X = 51, // Stanford MIPS-X |
| EM_COLDFIRE = 52, // Motorola ColdFire |
| EM_68HC12 = 53, // Motorola M68HC12 |
| EM_MMA = 54, // Fujitsu MMA Multimedia Accelerator |
| EM_PCP = 55, // Siemens PCP |
| EM_NCPU = 56, // Sony nCPU embedded RISC processor |
| EM_NDR1 = 57, // Denso NDR1 microprocessor |
| EM_STARCORE = 58, // Motorola Star*Core processor |
| EM_ME16 = 59, // Toyota ME16 processor |
| EM_ST100 = 60, // STMicroelectronics ST100 processor |
| EM_TINYJ = 61, // Advanced Logic Corp. TinyJ embedded processor family |
| EM_X86_64 = 62, // AMD x86-64 architecture |
| EM_PDSP = 63, // Sony DSP Processor |
| EM_PDP10 = 64, // Digital Equipment Corp. PDP-10 |
| EM_PDP11 = 65, // Digital Equipment Corp. PDP-11 |
| EM_FX66 = 66, // Siemens FX66 microcontroller |
| EM_ST9PLUS = 67, // STMicroelectronics ST9+ 8/16 bit microcontroller |
| EM_ST7 = 68, // STMicroelectronics ST7 8-bit microcontroller |
| EM_68HC16 = 69, // Motorola MC68HC16 Microcontroller |
| EM_68HC11 = 70, // Motorola MC68HC11 Microcontroller |
| EM_68HC08 = 71, // Motorola MC68HC08 Microcontroller |
| EM_68HC05 = 72, // Motorola MC68HC05 Microcontroller |
| EM_SVX = 73, // Silicon Graphics SVx |
| EM_ST19 = 74, // STMicroelectronics ST19 8-bit microcontroller |
| EM_VAX = 75, // Digital VAX |
| EM_CRIS = 76, // Axis Communications 32-bit embedded processor |
| EM_JAVELIN = 77, // Infineon Technologies 32-bit embedded processor |
| EM_FIREPATH = 78, // Element 14 64-bit DSP Processor |
| EM_ZSP = 79, // LSI Logic 16-bit DSP Processor |
| EM_MMIX = 80, // Donald Knuth's educational 64-bit processor |
| EM_HUANY = 81, // Harvard University machine-independent object files |
| EM_PRISM = 82, // SiTera Prism |
| EM_AVR = 83, // Atmel AVR 8-bit microcontroller |
| EM_FR30 = 84, // Fujitsu FR30 |
| EM_D10V = 85, // Mitsubishi D10V |
| EM_D30V = 86, // Mitsubishi D30V |
| EM_V850 = 87, // NEC v850 |
| EM_M32R = 88, // Mitsubishi M32R |
| EM_MN10300 = 89, // Matsushita MN10300 |
| EM_MN10200 = 90, // Matsushita MN10200 |
| EM_PJ = 91, // picoJava |
| EM_OPENRISC = 92, // OpenRISC 32-bit embedded processor |
| EM_ARC_COMPACT = 93, // ARC International ARCompact processor (old |
| // spelling/synonym: EM_ARC_A5) |
| EM_XTENSA = 94, // Tensilica Xtensa Architecture |
| EM_VIDEOCORE = 95, // Alphamosaic VideoCore processor |
| EM_TMM_GPP = 96, // Thompson Multimedia General Purpose Processor |
| EM_NS32K = 97, // National Semiconductor 32000 series |
| EM_TPC = 98, // Tenor Network TPC processor |
| EM_SNP1K = 99, // Trebia SNP 1000 processor |
| EM_ST200 = 100, // STMicroelectronics (www.st.com) ST200 |
| EM_IP2K = 101, // Ubicom IP2xxx microcontroller family |
| EM_MAX = 102, // MAX Processor |
| EM_CR = 103, // National Semiconductor CompactRISC microprocessor |
| EM_F2MC16 = 104, // Fujitsu F2MC16 |
| EM_MSP430 = 105, // Texas Instruments embedded microcontroller msp430 |
| EM_BLACKFIN = 106, // Analog Devices Blackfin (DSP) processor |
| EM_SE_C33 = 107, // S1C33 Family of Seiko Epson processors |
| EM_SEP = 108, // Sharp embedded microprocessor |
| EM_ARCA = 109, // Arca RISC Microprocessor |
| EM_UNICORE = 110, // Microprocessor series from PKU-Unity Ltd. and MPRC |
| // of Peking University |
| EM_EXCESS = 111, // eXcess: 16/32/64-bit configurable embedded CPU |
| EM_DXP = 112, // Icera Semiconductor Inc. Deep Execution Processor |
| EM_ALTERA_NIOS2 = 113, // Altera Nios II soft-core processor |
| EM_CRX = 114, // National Semiconductor CompactRISC CRX |
| EM_XGATE = 115, // Motorola XGATE embedded processor |
| EM_C166 = 116, // Infineon C16x/XC16x processor |
| EM_M16C = 117, // Renesas M16C series microprocessors |
| EM_DSPIC30F = 118, // Microchip Technology dsPIC30F Digital Signal |
| // Controller |
| EM_CE = 119, // Freescale Communication Engine RISC core |
| EM_M32C = 120, // Renesas M32C series microprocessors |
| EM_TSK3000 = 131, // Altium TSK3000 core |
| EM_RS08 = 132, // Freescale RS08 embedded processor |
| EM_SHARC = 133, // Analog Devices SHARC family of 32-bit DSP |
| // processors |
| EM_ECOG2 = 134, // Cyan Technology eCOG2 microprocessor |
| EM_SCORE7 = 135, // Sunplus S+core7 RISC processor |
| EM_DSP24 = 136, // New Japan Radio (NJR) 24-bit DSP Processor |
| EM_VIDEOCORE3 = 137, // Broadcom VideoCore III processor |
| EM_LATTICEMICO32 = 138, // RISC processor for Lattice FPGA architecture |
| EM_SE_C17 = 139, // Seiko Epson C17 family |
| EM_TI_C6000 = 140, // The Texas Instruments TMS320C6000 DSP family |
| EM_TI_C2000 = 141, // The Texas Instruments TMS320C2000 DSP family |
| EM_TI_C5500 = 142, // The Texas Instruments TMS320C55x DSP family |
| EM_MMDSP_PLUS = 160, // STMicroelectronics 64bit VLIW Data Signal Processor |
| EM_CYPRESS_M8C = 161, // Cypress M8C microprocessor |
| EM_R32C = 162, // Renesas R32C series microprocessors |
| EM_TRIMEDIA = 163, // NXP Semiconductors TriMedia architecture family |
| EM_HEXAGON = 164, // Qualcomm Hexagon processor |
| EM_8051 = 165, // Intel 8051 and variants |
| EM_STXP7X = 166, // STMicroelectronics STxP7x family of configurable |
| // and extensible RISC processors |
| EM_NDS32 = 167, // Andes Technology compact code size embedded RISC |
| // processor family |
| EM_ECOG1 = 168, // Cyan Technology eCOG1X family |
| EM_ECOG1X = 168, // Cyan Technology eCOG1X family |
| EM_MAXQ30 = 169, // Dallas Semiconductor MAXQ30 Core Micro-controllers |
| EM_XIMO16 = 170, // New Japan Radio (NJR) 16-bit DSP Processor |
| EM_MANIK = 171, // M2000 Reconfigurable RISC Microprocessor |
| EM_CRAYNV2 = 172, // Cray Inc. NV2 vector architecture |
| EM_RX = 173, // Renesas RX family |
| EM_METAG = 174, // Imagination Technologies META processor |
| // architecture |
| EM_MCST_ELBRUS = 175, // MCST Elbrus general purpose hardware architecture |
| EM_ECOG16 = 176, // Cyan Technology eCOG16 family |
| EM_CR16 = 177, // National Semiconductor CompactRISC CR16 16-bit |
| // microprocessor |
| EM_ETPU = 178, // Freescale Extended Time Processing Unit |
| EM_SLE9X = 179, // Infineon Technologies SLE9X core |
| EM_L10M = 180, // Intel L10M |
| EM_K10M = 181, // Intel K10M |
| EM_AARCH64 = 183, // ARM AArch64 |
| EM_AVR32 = 185, // Atmel Corporation 32-bit microprocessor family |
| EM_STM8 = 186, // STMicroeletronics STM8 8-bit microcontroller |
| EM_TILE64 = 187, // Tilera TILE64 multicore architecture family |
| EM_TILEPRO = 188, // Tilera TILEPro multicore architecture family |
| EM_CUDA = 190, // NVIDIA CUDA architecture |
| EM_TILEGX = 191, // Tilera TILE-Gx multicore architecture family |
| EM_CLOUDSHIELD = 192, // CloudShield architecture family |
| EM_COREA_1ST = 193, // KIPO-KAIST Core-A 1st generation processor family |
| EM_COREA_2ND = 194, // KIPO-KAIST Core-A 2nd generation processor family |
| EM_ARC_COMPACT2 = 195, // Synopsys ARCompact V2 |
| EM_OPEN8 = 196, // Open8 8-bit RISC soft processor core |
| EM_RL78 = 197, // Renesas RL78 family |
| EM_VIDEOCORE5 = 198, // Broadcom VideoCore V processor |
| EM_78KOR = 199, // Renesas 78KOR family |
| EM_56800EX = 200, // Freescale 56800EX Digital Signal Controller (DSC) |
| EM_BA1 = 201, // Beyond BA1 CPU architecture |
| EM_BA2 = 202, // Beyond BA2 CPU architecture |
| EM_XCORE = 203, // XMOS xCORE processor family |
| EM_MCHP_PIC = 204, // Microchip 8-bit PIC(r) family |
| EM_INTEL205 = 205, // Reserved by Intel |
| EM_INTEL206 = 206, // Reserved by Intel |
| EM_INTEL207 = 207, // Reserved by Intel |
| EM_INTEL208 = 208, // Reserved by Intel |
| EM_INTEL209 = 209, // Reserved by Intel |
| EM_KM32 = 210, // KM211 KM32 32-bit processor |
| EM_KMX32 = 211, // KM211 KMX32 32-bit processor |
| EM_KMX16 = 212, // KM211 KMX16 16-bit processor |
| EM_KMX8 = 213, // KM211 KMX8 8-bit processor |
| EM_KVARC = 214, // KM211 KVARC processor |
| EM_CDP = 215, // Paneve CDP architecture family |
| EM_COGE = 216, // Cognitive Smart Memory Processor |
| EM_COOL = 217, // iCelero CoolEngine |
| EM_NORC = 218, // Nanoradio Optimized RISC |
| EM_CSR_KALIMBA = 219, // CSR Kalimba architecture family |
| EM_AMDGPU = 224, // AMD GPU architecture |
| EM_RISCV = 243, // RISC-V |
| EM_LANAI = 244, // Lanai 32-bit processor |
| EM_BPF = 247, // Linux kernel bpf virtual machine |
| |
| // A request has been made to the maintainer of the official registry for |
| // such numbers for an official value for WebAssembly. As soon as one is |
| // allocated, this enum will be updated to use it. |
| EM_WEBASSEMBLY = 0x4157, // WebAssembly architecture |
| }; |
| |
| // Object file classes. |
| enum { |
| ELFCLASSNONE = 0, |
| ELFCLASS32 = 1, // 32-bit object file |
| ELFCLASS64 = 2 // 64-bit object file |
| }; |
| |
| // Object file byte orderings. |
| enum { |
| ELFDATANONE = 0, // Invalid data encoding. |
| ELFDATA2LSB = 1, // Little-endian object file |
| ELFDATA2MSB = 2 // Big-endian object file |
| }; |
| |
| // OS ABI identification. |
| enum { |
| ELFOSABI_NONE = 0, // UNIX System V ABI |
| ELFOSABI_HPUX = 1, // HP-UX operating system |
| ELFOSABI_NETBSD = 2, // NetBSD |
| ELFOSABI_GNU = 3, // GNU/Linux |
| ELFOSABI_LINUX = 3, // Historical alias for ELFOSABI_GNU. |
| ELFOSABI_HURD = 4, // GNU/Hurd |
| ELFOSABI_SOLARIS = 6, // Solaris |
| ELFOSABI_AIX = 7, // AIX |
| ELFOSABI_IRIX = 8, // IRIX |
| ELFOSABI_FREEBSD = 9, // FreeBSD |
| ELFOSABI_TRU64 = 10, // TRU64 UNIX |
| ELFOSABI_MODESTO = 11, // Novell Modesto |
| ELFOSABI_OPENBSD = 12, // OpenBSD |
| ELFOSABI_OPENVMS = 13, // OpenVMS |
| ELFOSABI_NSK = 14, // Hewlett-Packard Non-Stop Kernel |
| ELFOSABI_AROS = 15, // AROS |
| ELFOSABI_FENIXOS = 16, // FenixOS |
| ELFOSABI_CLOUDABI = 17, // Nuxi CloudABI |
| ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000 |
| ELFOSABI_AMDGPU_HSA = 64, // AMD HSA runtime |
| ELFOSABI_C6000_LINUX = 65, // Linux TMS320C6000 |
| ELFOSABI_ARM = 97, // ARM |
| ELFOSABI_STANDALONE = 255 // Standalone (embedded) application |
| }; |
| |
| #define ELF_RELOC(name, value) name = value, |
| |
| // X86_64 relocations. |
| enum { |
| #include "ELFRelocs/x86_64.def" |
| }; |
| |
| // i386 relocations. |
| enum { |
| #include "ELFRelocs/i386.def" |
| }; |
| |
| // ELF Relocation types for PPC32 |
| enum { |
| #include "ELFRelocs/PowerPC.def" |
| }; |
| |
| // Specific e_flags for PPC64 |
| enum { |
| // e_flags bits specifying ABI: |
| // 1 for original ABI using function descriptors, |
| // 2 for revised ABI without function descriptors, |
| // 0 for unspecified or not using any features affected by the differences. |
| EF_PPC64_ABI = 3 |
| }; |
| |
| // Special values for the st_other field in the symbol table entry for PPC64. |
| enum { |
| STO_PPC64_LOCAL_BIT = 5, |
| STO_PPC64_LOCAL_MASK = (7 << STO_PPC64_LOCAL_BIT) |
| }; |
| static inline int64_t decodePPC64LocalEntryOffset(unsigned Other) { |
| unsigned Val = (Other & STO_PPC64_LOCAL_MASK) >> STO_PPC64_LOCAL_BIT; |
| return ((1 << Val) >> 2) << 2; |
| } |
| static inline unsigned encodePPC64LocalEntryOffset(int64_t Offset) { |
| unsigned Val = |
| (Offset >= 4 * 4 ? (Offset >= 8 * 4 ? (Offset >= 16 * 4 ? 6 : 5) : 4) |
| : (Offset >= 2 * 4 ? 3 : (Offset >= 1 * 4 ? 2 : 0))); |
| return Val << STO_PPC64_LOCAL_BIT; |
| } |
| |
| // ELF Relocation types for PPC64 |
| enum { |
| #include "ELFRelocs/PowerPC64.def" |
| }; |
| |
| // ELF Relocation types for AArch64 |
| enum { |
| #include "ELFRelocs/AArch64.def" |
| }; |
| |
| // ARM Specific e_flags |
| enum : unsigned { |
| EF_ARM_SOFT_FLOAT = 0x00000200U, |
| EF_ARM_VFP_FLOAT = 0x00000400U, |
| EF_ARM_EABI_UNKNOWN = 0x00000000U, |
| EF_ARM_EABI_VER1 = 0x01000000U, |
| EF_ARM_EABI_VER2 = 0x02000000U, |
| EF_ARM_EABI_VER3 = 0x03000000U, |
| EF_ARM_EABI_VER4 = 0x04000000U, |
| EF_ARM_EABI_VER5 = 0x05000000U, |
| EF_ARM_EABIMASK = 0xFF000000U |
| }; |
| |
| // ELF Relocation types for ARM |
| enum { |
| #include "ELFRelocs/ARM.def" |
| }; |
| |
| // AVR specific e_flags |
| enum : unsigned { |
| EF_AVR_ARCH_AVR1 = 1, |
| EF_AVR_ARCH_AVR2 = 2, |
| EF_AVR_ARCH_AVR25 = 25, |
| EF_AVR_ARCH_AVR3 = 3, |
| EF_AVR_ARCH_AVR31 = 31, |
| EF_AVR_ARCH_AVR35 = 35, |
| EF_AVR_ARCH_AVR4 = 4, |
| EF_AVR_ARCH_AVR5 = 5, |
| EF_AVR_ARCH_AVR51 = 51, |
| EF_AVR_ARCH_AVR6 = 6, |
| EF_AVR_ARCH_AVRTINY = 100, |
| EF_AVR_ARCH_XMEGA1 = 101, |
| EF_AVR_ARCH_XMEGA2 = 102, |
| EF_AVR_ARCH_XMEGA3 = 103, |
| EF_AVR_ARCH_XMEGA4 = 104, |
| EF_AVR_ARCH_XMEGA5 = 105, |
| EF_AVR_ARCH_XMEGA6 = 106, |
| EF_AVR_ARCH_XMEGA7 = 107 |
| }; |
| |
| // ELF Relocation types for AVR |
| enum { |
| #include "ELFRelocs/AVR.def" |
| }; |
| |
| // Mips Specific e_flags |
| enum : unsigned { |
| EF_MIPS_NOREORDER = 0x00000001, // Don't reorder instructions |
| EF_MIPS_PIC = 0x00000002, // Position independent code |
| EF_MIPS_CPIC = 0x00000004, // Call object with Position independent code |
| EF_MIPS_ABI2 = 0x00000020, // File uses N32 ABI |
| EF_MIPS_32BITMODE = 0x00000100, // Code compiled for a 64-bit machine |
| // in 32-bit mode |
| EF_MIPS_FP64 = 0x00000200, // Code compiled for a 32-bit machine |
| // but uses 64-bit FP registers |
| EF_MIPS_NAN2008 = 0x00000400, // Uses IEE 754-2008 NaN encoding |
| |
| // ABI flags |
| EF_MIPS_ABI_O32 = 0x00001000, // This file follows the first MIPS 32 bit ABI |
| EF_MIPS_ABI_O64 = 0x00002000, // O32 ABI extended for 64-bit architecture. |
| EF_MIPS_ABI_EABI32 = 0x00003000, // EABI in 32 bit mode. |
| EF_MIPS_ABI_EABI64 = 0x00004000, // EABI in 64 bit mode. |
| EF_MIPS_ABI = 0x0000f000, // Mask for selecting EF_MIPS_ABI_ variant. |
| |
| // MIPS machine variant |
| EF_MIPS_MACH_NONE = 0x00000000, // A standard MIPS implementation. |
| EF_MIPS_MACH_3900 = 0x00810000, // Toshiba R3900 |
| EF_MIPS_MACH_4010 = 0x00820000, // LSI R4010 |
| EF_MIPS_MACH_4100 = 0x00830000, // NEC VR4100 |
| EF_MIPS_MACH_4650 = 0x00850000, // MIPS R4650 |
| EF_MIPS_MACH_4120 = 0x00870000, // NEC VR4120 |
| EF_MIPS_MACH_4111 = 0x00880000, // NEC VR4111/VR4181 |
| EF_MIPS_MACH_SB1 = 0x008a0000, // Broadcom SB-1 |
| EF_MIPS_MACH_OCTEON = 0x008b0000, // Cavium Networks Octeon |
| EF_MIPS_MACH_XLR = 0x008c0000, // RMI Xlr |
| EF_MIPS_MACH_OCTEON2 = 0x008d0000, // Cavium Networks Octeon2 |
| EF_MIPS_MACH_OCTEON3 = 0x008e0000, // Cavium Networks Octeon3 |
| EF_MIPS_MACH_5400 = 0x00910000, // NEC VR5400 |
| EF_MIPS_MACH_5900 = 0x00920000, // MIPS R5900 |
| EF_MIPS_MACH_5500 = 0x00980000, // NEC VR5500 |
| EF_MIPS_MACH_9000 = 0x00990000, // Unknown |
| EF_MIPS_MACH_LS2E = 0x00a00000, // ST Microelectronics Loongson 2E |
| EF_MIPS_MACH_LS2F = 0x00a10000, // ST Microelectronics Loongson 2F |
| EF_MIPS_MACH_LS3A = 0x00a20000, // Loongson 3A |
| EF_MIPS_MACH = 0x00ff0000, // EF_MIPS_MACH_xxx selection mask |
| |
| // ARCH_ASE |
| EF_MIPS_MICROMIPS = 0x02000000, // microMIPS |
| EF_MIPS_ARCH_ASE_M16 = 0x04000000, // Has Mips-16 ISA extensions |
| EF_MIPS_ARCH_ASE_MDMX = 0x08000000, // Has MDMX multimedia extensions |
| EF_MIPS_ARCH_ASE = 0x0f000000, // Mask for EF_MIPS_ARCH_ASE_xxx flags |
| |
| // ARCH |
| EF_MIPS_ARCH_1 = 0x00000000, // MIPS1 instruction set |
| EF_MIPS_ARCH_2 = 0x10000000, // MIPS2 instruction set |
| EF_MIPS_ARCH_3 = 0x20000000, // MIPS3 instruction set |
| EF_MIPS_ARCH_4 = 0x30000000, // MIPS4 instruction set |
| EF_MIPS_ARCH_5 = 0x40000000, // MIPS5 instruction set |
| EF_MIPS_ARCH_32 = 0x50000000, // MIPS32 instruction set per linux not elf.h |
| EF_MIPS_ARCH_64 = 0x60000000, // MIPS64 instruction set per linux not elf.h |
| EF_MIPS_ARCH_32R2 = 0x70000000, // mips32r2, mips32r3, mips32r5 |
| EF_MIPS_ARCH_64R2 = 0x80000000, // mips64r2, mips64r3, mips64r5 |
| EF_MIPS_ARCH_32R6 = 0x90000000, // mips32r6 |
| EF_MIPS_ARCH_64R6 = 0xa0000000, // mips64r6 |
| EF_MIPS_ARCH = 0xf0000000 // Mask for applying EF_MIPS_ARCH_ variant |
| }; |
| |
| // ELF Relocation types for Mips |
| enum { |
| #include "ELFRelocs/Mips.def" |
| }; |
| |
| // Special values for the st_other field in the symbol table entry for MIPS. |
| enum { |
| STO_MIPS_OPTIONAL = 0x04, // Symbol whose definition is optional |
| STO_MIPS_PLT = 0x08, // PLT entry related dynamic table record |
| STO_MIPS_PIC = 0x20, // PIC func in an object mixes PIC/non-PIC |
| STO_MIPS_MICROMIPS = 0x80, // MIPS Specific ISA for MicroMips |
| STO_MIPS_MIPS16 = 0xf0 // MIPS Specific ISA for Mips16 |
| }; |
| |
| // .MIPS.options section descriptor kinds |
| enum { |
| ODK_NULL = 0, // Undefined |
| ODK_REGINFO = 1, // Register usage information |
| ODK_EXCEPTIONS = 2, // Exception processing options |
| ODK_PAD = 3, // Section padding options |
| ODK_HWPATCH = 4, // Hardware patches applied |
| ODK_FILL = 5, // Linker fill value |
| ODK_TAGS = 6, // Space for tool identification |
| ODK_HWAND = 7, // Hardware AND patches applied |
| ODK_HWOR = 8, // Hardware OR patches applied |
| ODK_GP_GROUP = 9, // GP group to use for text/data sections |
| ODK_IDENT = 10, // ID information |
| ODK_PAGESIZE = 11 // Page size information |
| }; |
| |
| // Hexagon-specific e_flags |
| enum { |
| // Object processor version flags, bits[11:0] |
| EF_HEXAGON_MACH_V2 = 0x00000001, // Hexagon V2 |
| EF_HEXAGON_MACH_V3 = 0x00000002, // Hexagon V3 |
| EF_HEXAGON_MACH_V4 = 0x00000003, // Hexagon V4 |
| EF_HEXAGON_MACH_V5 = 0x00000004, // Hexagon V5 |
| EF_HEXAGON_MACH_V55 = 0x00000005, // Hexagon V55 |
| EF_HEXAGON_MACH_V60 = 0x00000060, // Hexagon V60 |
| |
| // Highest ISA version flags |
| EF_HEXAGON_ISA_MACH = 0x00000000, // Same as specified in bits[11:0] |
| // of e_flags |
| EF_HEXAGON_ISA_V2 = 0x00000010, // Hexagon V2 ISA |
| EF_HEXAGON_ISA_V3 = 0x00000020, // Hexagon V3 ISA |
| EF_HEXAGON_ISA_V4 = 0x00000030, // Hexagon V4 ISA |
| EF_HEXAGON_ISA_V5 = 0x00000040, // Hexagon V5 ISA |
| EF_HEXAGON_ISA_V55 = 0x00000050, // Hexagon V55 ISA |
| EF_HEXAGON_ISA_V60 = 0x00000060, // Hexagon V60 ISA |
| }; |
| |
| // Hexagon-specific section indexes for common small data |
| enum { |
| SHN_HEXAGON_SCOMMON = 0xff00, // Other access sizes |
| SHN_HEXAGON_SCOMMON_1 = 0xff01, // Byte-sized access |
| SHN_HEXAGON_SCOMMON_2 = 0xff02, // Half-word-sized access |
| SHN_HEXAGON_SCOMMON_4 = 0xff03, // Word-sized access |
| SHN_HEXAGON_SCOMMON_8 = 0xff04 // Double-word-size access |
| }; |
| |
| // ELF Relocation types for Hexagon |
| enum { |
| #include "ELFRelocs/Hexagon.def" |
| }; |
| |
| // ELF Relocation type for Lanai. |
| enum { |
| #include "ELFRelocs/Lanai.def" |
| }; |
| |
| // ELF Relocation types for RISC-V |
| enum { |
| #include "ELFRelocs/RISCV.def" |
| }; |
| |
| // ELF Relocation types for S390/zSeries |
| enum { |
| #include "ELFRelocs/SystemZ.def" |
| }; |
| |
| // ELF Relocation type for Sparc. |
| enum { |
| #include "ELFRelocs/Sparc.def" |
| }; |
| |
| // ELF Relocation types for WebAssembly |
| enum { |
| #include "ELFRelocs/WebAssembly.def" |
| }; |
| |
| // ELF Relocation types for AMDGPU |
| enum { |
| #include "ELFRelocs/AMDGPU.def" |
| }; |
| |
| // ELF Relocation types for BPF |
| enum { |
| #include "ELFRelocs/BPF.def" |
| }; |
| |
| #undef ELF_RELOC |
| |
| // Section header. |
| struct Elf32_Shdr { |
| Elf32_Word sh_name; // Section name (index into string table) |
| Elf32_Word sh_type; // Section type (SHT_*) |
| Elf32_Word sh_flags; // Section flags (SHF_*) |
| Elf32_Addr sh_addr; // Address where section is to be loaded |
| Elf32_Off sh_offset; // File offset of section data, in bytes |
| Elf32_Word sh_size; // Size of section, in bytes |
| Elf32_Word sh_link; // Section type-specific header table index link |
| Elf32_Word sh_info; // Section type-specific extra information |
| Elf32_Word sh_addralign; // Section address alignment |
| Elf32_Word sh_entsize; // Size of records contained within the section |
| }; |
| |
| // Section header for ELF64 - same fields as ELF32, different types. |
| struct Elf64_Shdr { |
| Elf64_Word sh_name; |
| Elf64_Word sh_type; |
| Elf64_Xword sh_flags; |
| Elf64_Addr sh_addr; |
| Elf64_Off sh_offset; |
| Elf64_Xword sh_size; |
| Elf64_Word sh_link; |
| Elf64_Word sh_info; |
| Elf64_Xword sh_addralign; |
| Elf64_Xword sh_entsize; |
| }; |
| |
| // Special section indices. |
| enum { |
| SHN_UNDEF = 0, // Undefined, missing, irrelevant, or meaningless |
| SHN_LORESERVE = 0xff00, // Lowest reserved index |
| SHN_LOPROC = 0xff00, // Lowest processor-specific index |
| SHN_HIPROC = 0xff1f, // Highest processor-specific index |
| SHN_LOOS = 0xff20, // Lowest operating system-specific index |
| SHN_HIOS = 0xff3f, // Highest operating system-specific index |
| SHN_ABS = 0xfff1, // Symbol has absolute value; does not need relocation |
| SHN_COMMON = 0xfff2, // FORTRAN COMMON or C external global variables |
| SHN_XINDEX = 0xffff, // Mark that the index is >= SHN_LORESERVE |
| SHN_HIRESERVE = 0xffff // Highest reserved index |
| }; |
| |
| // Section types. |
| enum : unsigned { |
| SHT_NULL = 0, // No associated section (inactive entry). |
| SHT_PROGBITS = 1, // Program-defined contents. |
| SHT_SYMTAB = 2, // Symbol table. |
| SHT_STRTAB = 3, // String table. |
| SHT_RELA = 4, // Relocation entries; explicit addends. |
| SHT_HASH = 5, // Symbol hash table. |
| SHT_DYNAMIC = 6, // Information for dynamic linking. |
| SHT_NOTE = 7, // Information about the file. |
| SHT_NOBITS = 8, // Data occupies no space in the file. |
| SHT_REL = 9, // Relocation entries; no explicit addends. |
| SHT_SHLIB = 10, // Reserved. |
| SHT_DYNSYM = 11, // Symbol table. |
| SHT_INIT_ARRAY = 14, // Pointers to initialization functions. |
| SHT_FINI_ARRAY = 15, // Pointers to termination functions. |
| SHT_PREINIT_ARRAY = 16, // Pointers to pre-init functions. |
| SHT_GROUP = 17, // Section group. |
| SHT_SYMTAB_SHNDX = 18, // Indices for SHN_XINDEX entries. |
| SHT_LOOS = 0x60000000, // Lowest operating system-specific type. |
| SHT_GNU_ATTRIBUTES = 0x6ffffff5, // Object attributes. |
| SHT_GNU_HASH = 0x6ffffff6, // GNU-style hash table. |
| SHT_GNU_verdef = 0x6ffffffd, // GNU version definitions. |
| SHT_GNU_verneed = 0x6ffffffe, // GNU version references. |
| SHT_GNU_versym = 0x6fffffff, // GNU symbol versions table. |
| SHT_HIOS = 0x6fffffff, // Highest operating system-specific type. |
| SHT_LOPROC = 0x70000000, // Lowest processor arch-specific type. |
| // Fixme: All this is duplicated in MCSectionELF. Why?? |
| // Exception Index table |
| SHT_ARM_EXIDX = 0x70000001U, |
| // BPABI DLL dynamic linking pre-emption map |
| SHT_ARM_PREEMPTMAP = 0x70000002U, |
| // Object file compatibility attributes |
| SHT_ARM_ATTRIBUTES = 0x70000003U, |
| SHT_ARM_DEBUGOVERLAY = 0x70000004U, |
| SHT_ARM_OVERLAYSECTION = 0x70000005U, |
| SHT_HEX_ORDERED = 0x70000000, // Link editor is to sort the entries in |
| // this section based on their sizes |
| SHT_X86_64_UNWIND = 0x70000001, // Unwind information |
| |
| SHT_MIPS_REGINFO = 0x70000006, // Register usage information |
| SHT_MIPS_OPTIONS = 0x7000000d, // General options |
| SHT_MIPS_ABIFLAGS = 0x7000002a, // ABI information. |
| |
| SHT_HIPROC = 0x7fffffff, // Highest processor arch-specific type. |
| SHT_LOUSER = 0x80000000, // Lowest type reserved for applications. |
| SHT_HIUSER = 0xffffffff // Highest type reserved for applications. |
| }; |
| |
| // Section flags. |
| enum : unsigned { |
| // Section data should be writable during execution. |
| SHF_WRITE = 0x1, |
| |
| // Section occupies memory during program execution. |
| SHF_ALLOC = 0x2, |
| |
| // Section contains executable machine instructions. |
| SHF_EXECINSTR = 0x4, |
| |
| // The data in this section may be merged. |
| SHF_MERGE = 0x10, |
| |
| // The data in this section is null-terminated strings. |
| SHF_STRINGS = 0x20, |
| |
| // A field in this section holds a section header table index. |
| SHF_INFO_LINK = 0x40U, |
| |
| // Adds special ordering requirements for link editors. |
| SHF_LINK_ORDER = 0x80U, |
| |
| // This section requires special OS-specific processing to avoid incorrect |
| // behavior. |
| SHF_OS_NONCONFORMING = 0x100U, |
| |
| // This section is a member of a section group. |
| SHF_GROUP = 0x200U, |
| |
| // This section holds Thread-Local Storage. |
| SHF_TLS = 0x400U, |
| |
| // Identifies a section containing compressed data. |
| SHF_COMPRESSED = 0x800U, |
| |
| // This section is excluded from the final executable or shared library. |
| SHF_EXCLUDE = 0x80000000U, |
| |
| // Start of target-specific flags. |
| |
| /// XCORE_SHF_CP_SECTION - All sections with the "c" flag are grouped |
| /// together by the linker to form the constant pool and the cp register is |
| /// set to the start of the constant pool by the boot code. |
| XCORE_SHF_CP_SECTION = 0x800U, |
| |
| /// XCORE_SHF_DP_SECTION - All sections with the "d" flag are grouped |
| /// together by the linker to form the data section and the dp register is |
| /// set to the start of the section by the boot code. |
| XCORE_SHF_DP_SECTION = 0x1000U, |
| |
| SHF_MASKOS = 0x0ff00000, |
| |
| // Bits indicating processor-specific flags. |
| SHF_MASKPROC = 0xf0000000, |
| |
| // If an object file section does not have this flag set, then it may not hold |
| // more than 2GB and can be freely referred to in objects using smaller code |
| // models. Otherwise, only objects using larger code models can refer to them. |
| // For example, a medium code model object can refer to data in a section that |
| // sets this flag besides being able to refer to data in a section that does |
| // not set it; likewise, a small code model object can refer only to code in a |
| // section that does not set this flag. |
| SHF_X86_64_LARGE = 0x10000000, |
| |
| // All sections with the GPREL flag are grouped into a global data area |
| // for faster accesses |
| SHF_HEX_GPREL = 0x10000000, |
| |
| // Section contains text/data which may be replicated in other sections. |
| // Linker must retain only one copy. |
| SHF_MIPS_NODUPES = 0x01000000, |
| |
| // Linker must generate implicit hidden weak names. |
| SHF_MIPS_NAMES = 0x02000000, |
| |
| // Section data local to process. |
| SHF_MIPS_LOCAL = 0x04000000, |
| |
| // Do not strip this section. |
| SHF_MIPS_NOSTRIP = 0x08000000, |
| |
| // Section must be part of global data area. |
| SHF_MIPS_GPREL = 0x10000000, |
| |
| // This section should be merged. |
| SHF_MIPS_MERGE = 0x20000000, |
| |
| // Address size to be inferred from section entry size. |
| SHF_MIPS_ADDR = 0x40000000, |
| |
| // Section data is string data by default. |
| SHF_MIPS_STRING = 0x80000000, |
| |
| // Make code section unreadable when in execute-only mode |
| SHF_ARM_PURECODE = 0x20000000, |
| |
| SHF_AMDGPU_HSA_GLOBAL = 0x00100000, |
| SHF_AMDGPU_HSA_READONLY = 0x00200000, |
| SHF_AMDGPU_HSA_CODE = 0x00400000, |
| SHF_AMDGPU_HSA_AGENT = 0x00800000 |
| }; |
| |
| // Section Group Flags |
| enum : unsigned { |
| GRP_COMDAT = 0x1, |
| GRP_MASKOS = 0x0ff00000, |
| GRP_MASKPROC = 0xf0000000 |
| }; |
| |
| // Symbol table entries for ELF32. |
| struct Elf32_Sym { |
| Elf32_Word st_name; // Symbol name (index into string table) |
| Elf32_Addr st_value; // Value or address associated with the symbol |
| Elf32_Word st_size; // Size of the symbol |
| unsigned char st_info; // Symbol's type and binding attributes |
| unsigned char st_other; // Must be zero; reserved |
| Elf32_Half st_shndx; // Which section (header table index) it's defined in |
| |
| // These accessors and mutators correspond to the ELF32_ST_BIND, |
| // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification: |
| unsigned char getBinding() const { return st_info >> 4; } |
| unsigned char getType() const { return st_info & 0x0f; } |
| void setBinding(unsigned char b) { setBindingAndType(b, getType()); } |
| void setType(unsigned char t) { setBindingAndType(getBinding(), t); } |
| void setBindingAndType(unsigned char b, unsigned char t) { |
| st_info = (b << 4) + (t & 0x0f); |
| } |
| }; |
| |
| // Symbol table entries for ELF64. |
| struct Elf64_Sym { |
| Elf64_Word st_name; // Symbol name (index into string table) |
| unsigned char st_info; // Symbol's type and binding attributes |
| unsigned char st_other; // Must be zero; reserved |
| Elf64_Half st_shndx; // Which section (header tbl index) it's defined in |
| Elf64_Addr st_value; // Value or address associated with the symbol |
| Elf64_Xword st_size; // Size of the symbol |
| |
| // These accessors and mutators are identical to those defined for ELF32 |
| // symbol table entries. |
| unsigned char getBinding() const { return st_info >> 4; } |
| unsigned char getType() const { return st_info & 0x0f; } |
| void setBinding(unsigned char b) { setBindingAndType(b, getType()); } |
| void setType(unsigned char t) { setBindingAndType(getBinding(), t); } |
| void setBindingAndType(unsigned char b, unsigned char t) { |
| st_info = (b << 4) + (t & 0x0f); |
| } |
| }; |
| |
| // The size (in bytes) of symbol table entries. |
| enum { |
| SYMENTRY_SIZE32 = 16, // 32-bit symbol entry size |
| SYMENTRY_SIZE64 = 24 // 64-bit symbol entry size. |
| }; |
| |
| // Symbol bindings. |
| enum { |
| STB_LOCAL = 0, // Local symbol, not visible outside obj file containing def |
| STB_GLOBAL = 1, // Global symbol, visible to all object files being combined |
| STB_WEAK = 2, // Weak symbol, like global but lower-precedence |
| STB_GNU_UNIQUE = 10, |
| STB_LOOS = 10, // Lowest operating system-specific binding type |
| STB_HIOS = 12, // Highest operating system-specific binding type |
| STB_LOPROC = 13, // Lowest processor-specific binding type |
| STB_HIPROC = 15 // Highest processor-specific binding type |
| }; |
| |
| // Symbol types. |
| enum { |
| STT_NOTYPE = 0, // Symbol's type is not specified |
| STT_OBJECT = 1, // Symbol is a data object (variable, array, etc.) |
| STT_FUNC = 2, // Symbol is executable code (function, etc.) |
| STT_SECTION = 3, // Symbol refers to a section |
| STT_FILE = 4, // Local, absolute symbol that refers to a file |
| STT_COMMON = 5, // An uninitialized common block |
| STT_TLS = 6, // Thread local data object |
| STT_GNU_IFUNC = 10, // GNU indirect function |
| STT_LOOS = 10, // Lowest operating system-specific symbol type |
| STT_HIOS = 12, // Highest operating system-specific symbol type |
| STT_LOPROC = 13, // Lowest processor-specific symbol type |
| STT_HIPROC = 15, // Highest processor-specific symbol type |
| |
| // AMDGPU symbol types |
| STT_AMDGPU_HSA_KERNEL = 10, |
| STT_AMDGPU_HSA_INDIRECT_FUNCTION = 11, |
| STT_AMDGPU_HSA_METADATA = 12 |
| }; |
| |
| enum { |
| STV_DEFAULT = 0, // Visibility is specified by binding type |
| STV_INTERNAL = 1, // Defined by processor supplements |
| STV_HIDDEN = 2, // Not visible to other components |
| STV_PROTECTED = 3 // Visible in other components but not preemptable |
| }; |
| |
| // Symbol number. |
| enum { STN_UNDEF = 0 }; |
| |
| // Special relocation symbols used in the MIPS64 ELF relocation entries |
| enum { |
| RSS_UNDEF = 0, // None |
| RSS_GP = 1, // Value of gp |
| RSS_GP0 = 2, // Value of gp used to create object being relocated |
| RSS_LOC = 3 // Address of location being relocated |
| }; |
| |
| // Relocation entry, without explicit addend. |
| struct Elf32_Rel { |
| Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr) |
| Elf32_Word r_info; // Symbol table index and type of relocation to apply |
| |
| // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, |
| // and ELF32_R_INFO macros defined in the ELF specification: |
| Elf32_Word getSymbol() const { return (r_info >> 8); } |
| unsigned char getType() const { return (unsigned char)(r_info & 0x0ff); } |
| void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } |
| void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } |
| void setSymbolAndType(Elf32_Word s, unsigned char t) { |
| r_info = (s << 8) + t; |
| } |
| }; |
| |
| // Relocation entry with explicit addend. |
| struct Elf32_Rela { |
| Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr) |
| Elf32_Word r_info; // Symbol table index and type of relocation to apply |
| Elf32_Sword r_addend; // Compute value for relocatable field by adding this |
| |
| // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, |
| // and ELF32_R_INFO macros defined in the ELF specification: |
| Elf32_Word getSymbol() const { return (r_info >> 8); } |
| unsigned char getType() const { return (unsigned char)(r_info & 0x0ff); } |
| void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } |
| void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } |
| void setSymbolAndType(Elf32_Word s, unsigned char t) { |
| r_info = (s << 8) + t; |
| } |
| }; |
| |
| // Relocation entry, without explicit addend. |
| struct Elf64_Rel { |
| Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr). |
| Elf64_Xword r_info; // Symbol table index and type of relocation to apply. |
| |
| // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, |
| // and ELF64_R_INFO macros defined in the ELF specification: |
| Elf64_Word getSymbol() const { return (r_info >> 32); } |
| Elf64_Word getType() const { return (Elf64_Word)(r_info & 0xffffffffL); } |
| void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); } |
| void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); } |
| void setSymbolAndType(Elf64_Word s, Elf64_Word t) { |
| r_info = ((Elf64_Xword)s << 32) + (t & 0xffffffffL); |
| } |
| }; |
| |
| // Relocation entry with explicit addend. |
| struct Elf64_Rela { |
| Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr). |
| Elf64_Xword r_info; // Symbol table index and type of relocation to apply. |
| Elf64_Sxword r_addend; // Compute value for relocatable field by adding this. |
| |
| // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, |
| // and ELF64_R_INFO macros defined in the ELF specification: |
| Elf64_Word getSymbol() const { return (r_info >> 32); } |
| Elf64_Word getType() const { return (Elf64_Word)(r_info & 0xffffffffL); } |
| void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); } |
| void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); } |
| void setSymbolAndType(Elf64_Word s, Elf64_Word t) { |
| r_info = ((Elf64_Xword)s << 32) + (t & 0xffffffffL); |
| } |
| }; |
| |
| // Program header for ELF32. |
| struct Elf32_Phdr { |
| Elf32_Word p_type; // Type of segment |
| Elf32_Off p_offset; // File offset where segment is located, in bytes |
| Elf32_Addr p_vaddr; // Virtual address of beginning of segment |
| Elf32_Addr p_paddr; // Physical address of beginning of segment (OS-specific) |
| Elf32_Word p_filesz; // Num. of bytes in file image of segment (may be zero) |
| Elf32_Word p_memsz; // Num. of bytes in mem image of segment (may be zero) |
| Elf32_Word p_flags; // Segment flags |
| Elf32_Word p_align; // Segment alignment constraint |
| }; |
| |
| // Program header for ELF64. |
| struct Elf64_Phdr { |
| Elf64_Word p_type; // Type of segment |
| Elf64_Word p_flags; // Segment flags |
| Elf64_Off p_offset; // File offset where segment is located, in bytes |
| Elf64_Addr p_vaddr; // Virtual address of beginning of segment |
| Elf64_Addr p_paddr; // Physical addr of beginning of segment (OS-specific) |
| Elf64_Xword p_filesz; // Num. of bytes in file image of segment (may be zero) |
| Elf64_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero) |
| Elf64_Xword p_align; // Segment alignment constraint |
| }; |
| |
| // Segment types. |
| enum { |
| PT_NULL = 0, // Unused segment. |
| PT_LOAD = 1, // Loadable segment. |
| PT_DYNAMIC = 2, // Dynamic linking information. |
| PT_INTERP = 3, // Interpreter pathname. |
| PT_NOTE = 4, // Auxiliary information. |
| PT_SHLIB = 5, // Reserved. |
| PT_PHDR = 6, // The program header table itself. |
| PT_TLS = 7, // The thread-local storage template. |
| PT_LOOS = 0x60000000, // Lowest operating system-specific pt entry type. |
| PT_HIOS = 0x6fffffff, // Highest operating system-specific pt entry type. |
| PT_LOPROC = 0x70000000, // Lowest processor-specific program hdr entry type. |
| PT_HIPROC = 0x7fffffff, // Highest processor-specific program hdr entry type. |
| |
| // x86-64 program header types. |
| // These all contain stack unwind tables. |
| PT_GNU_EH_FRAME = 0x6474e550, |
| PT_SUNW_EH_FRAME = 0x6474e550, |
| PT_SUNW_UNWIND = 0x6464e550, |
| |
| PT_GNU_STACK = 0x6474e551, // Indicates stack executability. |
| PT_GNU_RELRO = 0x6474e552, // Read-only after relocation. |
| |
| PT_OPENBSD_RANDOMIZE = 0x65a3dbe6, // Fill with random data. |
| PT_OPENBSD_WXNEEDED = 0x65a3dbe7, // Program does W^X violations. |
| PT_OPENBSD_BOOTDATA = 0x65a41be6, // Section for boot arguments. |
| |
| // ARM program header types. |
| PT_ARM_ARCHEXT = 0x70000000, // Platform architecture compatibility info |
| // These all contain stack unwind tables. |
| PT_ARM_EXIDX = 0x70000001, |
| PT_ARM_UNWIND = 0x70000001, |
| |
| // MIPS program header types. |
| PT_MIPS_REGINFO = 0x70000000, // Register usage information. |
| PT_MIPS_RTPROC = 0x70000001, // Runtime procedure table. |
| PT_MIPS_OPTIONS = 0x70000002, // Options segment. |
| PT_MIPS_ABIFLAGS = 0x70000003, // Abiflags segment. |
| |
| // AMDGPU program header types. |
| PT_AMDGPU_HSA_LOAD_GLOBAL_PROGRAM = 0x60000000, |
| PT_AMDGPU_HSA_LOAD_GLOBAL_AGENT = 0x60000001, |
| PT_AMDGPU_HSA_LOAD_READONLY_AGENT = 0x60000002, |
| PT_AMDGPU_HSA_LOAD_CODE_AGENT = 0x60000003, |
| |
| // WebAssembly program header types. |
| PT_WEBASSEMBLY_FUNCTIONS = PT_LOPROC + 0, // Function definitions. |
| }; |
| |
| // Segment flag bits. |
| enum : unsigned { |
| PF_X = 1, // Execute |
| PF_W = 2, // Write |
| PF_R = 4, // Read |
| PF_MASKOS = 0x0ff00000, // Bits for operating system-specific semantics. |
| PF_MASKPROC = 0xf0000000 // Bits for processor-specific semantics. |
| }; |
| |
| // Dynamic table entry for ELF32. |
| struct Elf32_Dyn { |
| Elf32_Sword d_tag; // Type of dynamic table entry. |
| union { |
| Elf32_Word d_val; // Integer value of entry. |
| Elf32_Addr d_ptr; // Pointer value of entry. |
| } d_un; |
| }; |
| |
| // Dynamic table entry for ELF64. |
| struct Elf64_Dyn { |
| Elf64_Sxword d_tag; // Type of dynamic table entry. |
| union { |
| Elf64_Xword d_val; // Integer value of entry. |
| Elf64_Addr d_ptr; // Pointer value of entry. |
| } d_un; |
| }; |
| |
| // Dynamic table entry tags. |
| enum { |
| DT_NULL = 0, // Marks end of dynamic array. |
| DT_NEEDED = 1, // String table offset of needed library. |
| DT_PLTRELSZ = 2, // Size of relocation entries in PLT. |
| DT_PLTGOT = 3, // Address associated with linkage table. |
| DT_HASH = 4, // Address of symbolic hash table. |
| DT_STRTAB = 5, // Address of dynamic string table. |
| DT_SYMTAB = 6, // Address of dynamic symbol table. |
| DT_RELA = 7, // Address of relocation table (Rela entries). |
| DT_RELASZ = 8, // Size of Rela relocation table. |
| DT_RELAENT = 9, // Size of a Rela relocation entry. |
| DT_STRSZ = 10, // Total size of the string table. |
| DT_SYMENT = 11, // Size of a symbol table entry. |
| DT_INIT = 12, // Address of initialization function. |
| DT_FINI = 13, // Address of termination function. |
| DT_SONAME = 14, // String table offset of a shared objects name. |
| DT_RPATH = 15, // String table offset of library search path. |
| DT_SYMBOLIC = 16, // Changes symbol resolution algorithm. |
| DT_REL = 17, // Address of relocation table (Rel entries). |
| DT_RELSZ = 18, // Size of Rel relocation table. |
| DT_RELENT = 19, // Size of a Rel relocation entry. |
| DT_PLTREL = 20, // Type of relocation entry used for linking. |
| DT_DEBUG = 21, // Reserved for debugger. |
| DT_TEXTREL = 22, // Relocations exist for non-writable segments. |
| DT_JMPREL = 23, // Address of relocations associated with PLT. |
| DT_BIND_NOW = 24, // Process all relocations before execution. |
| DT_INIT_ARRAY = 25, // Pointer to array of initialization functions. |
| DT_FINI_ARRAY = 26, // Pointer to array of termination functions. |
| DT_INIT_ARRAYSZ = 27, // Size of DT_INIT_ARRAY. |
| DT_FINI_ARRAYSZ = 28, // Size of DT_FINI_ARRAY. |
| DT_RUNPATH = 29, // String table offset of lib search path. |
| DT_FLAGS = 30, // Flags. |
| DT_ENCODING = 32, // Values from here to DT_LOOS follow the rules |
| // for the interpretation of the d_un union. |
| |
| DT_PREINIT_ARRAY = 32, // Pointer to array of preinit functions. |
| DT_PREINIT_ARRAYSZ = 33, // Size of the DT_PREINIT_ARRAY array. |
| |
| DT_LOOS = 0x60000000, // Start of environment specific tags. |
| DT_HIOS = 0x6FFFFFFF, // End of environment specific tags. |
| DT_LOPROC = 0x70000000, // Start of processor specific tags. |
| DT_HIPROC = 0x7FFFFFFF, // End of processor specific tags. |
| |
| DT_GNU_HASH = 0x6FFFFEF5, // Reference to the GNU hash table. |
| DT_TLSDESC_PLT = |
| 0x6FFFFEF6, // Location of PLT entry for TLS descriptor resolver calls. |
| DT_TLSDESC_GOT = 0x6FFFFEF7, // Location of GOT entry used by TLS descriptor |
| // resolver PLT entry. |
| DT_RELACOUNT = 0x6FFFFFF9, // ELF32_Rela count. |
| DT_RELCOUNT = 0x6FFFFFFA, // ELF32_Rel count. |
| |
| DT_FLAGS_1 = 0X6FFFFFFB, // Flags_1. |
| DT_VERSYM = 0x6FFFFFF0, // The address of .gnu.version section. |
| DT_VERDEF = 0X6FFFFFFC, // The address of the version definition table. |
| DT_VERDEFNUM = 0X6FFFFFFD, // The number of entries in DT_VERDEF. |
| DT_VERNEED = 0X6FFFFFFE, // The address of the version Dependency table. |
| DT_VERNEEDNUM = 0X6FFFFFFF, // The number of entries in DT_VERNEED. |
| |
| // Mips specific dynamic table entry tags. |
| DT_MIPS_RLD_VERSION = 0x70000001, // 32 bit version number for runtime |
| // linker interface. |
| DT_MIPS_TIME_STAMP = 0x70000002, // Time stamp. |
| DT_MIPS_ICHECKSUM = 0x70000003, // Checksum of external strings |
| // and common sizes. |
| DT_MIPS_IVERSION = 0x70000004, // Index of version string |
| // in string table. |
| DT_MIPS_FLAGS = 0x70000005, // 32 bits of flags. |
| DT_MIPS_BASE_ADDRESS = 0x70000006, // Base address of the segment. |
| DT_MIPS_MSYM = 0x70000007, // Address of .msym section. |
| DT_MIPS_CONFLICT = 0x70000008, // Address of .conflict section. |
| DT_MIPS_LIBLIST = 0x70000009, // Address of .liblist section. |
| DT_MIPS_LOCAL_GOTNO = 0x7000000a, // Number of local global offset |
| // table entries. |
| DT_MIPS_CONFLICTNO = 0x7000000b, // Number of entries |
| // in the .conflict section. |
| DT_MIPS_LIBLISTNO = 0x70000010, // Number of entries |
| // in the .liblist section. |
| DT_MIPS_SYMTABNO = 0x70000011, // Number of entries |
| // in the .dynsym section. |
| DT_MIPS_UNREFEXTNO = 0x70000012, // Index of first external dynamic symbol |
| // not referenced locally. |
| DT_MIPS_GOTSYM = 0x70000013, // Index of first dynamic symbol |
| // in global offset table. |
| DT_MIPS_HIPAGENO = 0x70000014, // Number of page table entries |
| // in global offset table. |
| DT_MIPS_RLD_MAP = 0x70000016, // Address of run time loader map, |
| // used for debugging. |
| DT_MIPS_DELTA_CLASS = 0x70000017, // Delta C++ class definition. |
| DT_MIPS_DELTA_CLASS_NO = 0x70000018, // Number of entries |
| // in DT_MIPS_DELTA_CLASS. |
| DT_MIPS_DELTA_INSTANCE = 0x70000019, // Delta C++ class instances. |
| DT_MIPS_DELTA_INSTANCE_NO = 0x7000001A, // Number of entries |
| // in DT_MIPS_DELTA_INSTANCE. |
| DT_MIPS_DELTA_RELOC = 0x7000001B, // Delta relocations. |
| DT_MIPS_DELTA_RELOC_NO = 0x7000001C, // Number of entries |
| // in DT_MIPS_DELTA_RELOC. |
| DT_MIPS_DELTA_SYM = 0x7000001D, // Delta symbols that Delta |
| // relocations refer to. |
| DT_MIPS_DELTA_SYM_NO = 0x7000001E, // Number of entries |
| // in DT_MIPS_DELTA_SYM. |
| DT_MIPS_DELTA_CLASSSYM = 0x70000020, // Delta symbols that hold |
| // class declarations. |
| DT_MIPS_DELTA_CLASSSYM_NO = 0x70000021, // Number of entries |
| // in DT_MIPS_DELTA_CLASSSYM. |
| DT_MIPS_CXX_FLAGS = 0x70000022, // Flags indicating information |
| // about C++ flavor. |
| DT_MIPS_PIXIE_INIT = 0x70000023, // Pixie information. |
| DT_MIPS_SYMBOL_LIB = 0x70000024, // Address of .MIPS.symlib |
| DT_MIPS_LOCALPAGE_GOTIDX = 0x70000025, // The GOT index of the first PTE |
| // for a segment |
| DT_MIPS_LOCAL_GOTIDX = 0x70000026, // The GOT index of the first PTE |
| // for a local symbol |
| DT_MIPS_HIDDEN_GOTIDX = 0x70000027, // The GOT index of the first PTE |
| // for a hidden symbol |
| DT_MIPS_PROTECTED_GOTIDX = 0x70000028, // The GOT index of the first PTE |
| // for a protected symbol |
| DT_MIPS_OPTIONS = 0x70000029, // Address of `.MIPS.options'. |
| DT_MIPS_INTERFACE = 0x7000002A, // Address of `.interface'. |
| DT_MIPS_DYNSTR_ALIGN = 0x7000002B, // Unknown. |
| DT_MIPS_INTERFACE_SIZE = 0x7000002C, // Size of the .interface section. |
| DT_MIPS_RLD_TEXT_RESOLVE_ADDR = 0x7000002D, // Size of rld_text_resolve |
| // function stored in the GOT. |
| DT_MIPS_PERF_SUFFIX = 0x7000002E, // Default suffix of DSO to be added |
| // by rld on dlopen() calls. |
| DT_MIPS_COMPACT_SIZE = 0x7000002F, // Size of compact relocation |
| // section (O32). |
| DT_MIPS_GP_VALUE = 0x70000030, // GP value for auxiliary GOTs. |
| DT_MIPS_AUX_DYNAMIC = 0x70000031, // Address of auxiliary .dynamic. |
| DT_MIPS_PLTGOT = 0x70000032, // Address of the base of the PLTGOT. |
| DT_MIPS_RWPLT = 0x70000034, // Points to the base |
| // of a writable PLT. |
| DT_MIPS_RLD_MAP_REL = 0x70000035, // Relative offset of run time loader |
| // map, used for debugging. |
| |
| // Sun machine-independent extensions. |
| DT_AUXILIARY = 0x7FFFFFFD, // Shared object to load before self |
| DT_FILTER = 0x7FFFFFFF // Shared object to get values from |
| }; |
| |
| // DT_FLAGS values. |
| enum { |
| DF_ORIGIN = 0x01, // The object may reference $ORIGIN. |
| DF_SYMBOLIC = 0x02, // Search the shared lib before searching the exe. |
| DF_TEXTREL = 0x04, // Relocations may modify a non-writable segment. |
| DF_BIND_NOW = 0x08, // Process all relocations on load. |
| DF_STATIC_TLS = 0x10 // Reject attempts to load dynamically. |
| }; |
| |
| // State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1 entry. |
| enum { |
| DF_1_NOW = 0x00000001, // Set RTLD_NOW for this object. |
| DF_1_GLOBAL = 0x00000002, // Set RTLD_GLOBAL for this object. |
| DF_1_GROUP = 0x00000004, // Set RTLD_GROUP for this object. |
| DF_1_NODELETE = 0x00000008, // Set RTLD_NODELETE for this object. |
| DF_1_LOADFLTR = 0x00000010, // Trigger filtee loading at runtime. |
| DF_1_INITFIRST = 0x00000020, // Set RTLD_INITFIRST for this object. |
| DF_1_NOOPEN = 0x00000040, // Set RTLD_NOOPEN for this object. |
| DF_1_ORIGIN = 0x00000080, // $ORIGIN must be handled. |
| DF_1_DIRECT = 0x00000100, // Direct binding enabled. |
| DF_1_TRANS = 0x00000200, |
| DF_1_INTERPOSE = 0x00000400, // Object is used to interpose. |
| DF_1_NODEFLIB = 0x00000800, // Ignore default lib search path. |
| DF_1_NODUMP = 0x00001000, // Object can't be dldump'ed. |
| DF_1_CONFALT = 0x00002000, // Configuration alternative created. |
| DF_1_ENDFILTEE = 0x00004000, // Filtee terminates filters search. |
| DF_1_DISPRELDNE = 0x00008000, // Disp reloc applied at build time. |
| DF_1_DISPRELPND = 0x00010000, // Disp reloc applied at run-time. |
| DF_1_NODIRECT = 0x00020000, // Object has no-direct binding. |
| DF_1_IGNMULDEF = 0x00040000, |
| DF_1_NOKSYMS = 0x00080000, |
| DF_1_NOHDR = 0x00100000, |
| DF_1_EDITED = 0x00200000, // Object is modified after built. |
| DF_1_NORELOC = 0x00400000, |
| DF_1_SYMINTPOSE = 0x00800000, // Object has individual interposers. |
| DF_1_GLOBAUDIT = 0x01000000, // Global auditing required. |
| DF_1_SINGLETON = 0x02000000 // Singleton symbols are used. |
| }; |
| |
| // DT_MIPS_FLAGS values. |
| enum { |
| RHF_NONE = 0x00000000, // No flags. |
| RHF_QUICKSTART = 0x00000001, // Uses shortcut pointers. |
| RHF_NOTPOT = 0x00000002, // Hash size is not a power of two. |
| RHS_NO_LIBRARY_REPLACEMENT = 0x00000004, // Ignore LD_LIBRARY_PATH. |
| RHF_NO_MOVE = 0x00000008, // DSO address may not be relocated. |
| RHF_SGI_ONLY = 0x00000010, // SGI specific features. |
| RHF_GUARANTEE_INIT = 0x00000020, // Guarantee that .init will finish |
| // executing before any non-init |
| // code in DSO is called. |
| RHF_DELTA_C_PLUS_PLUS = 0x00000040, // Contains Delta C++ code. |
| RHF_GUARANTEE_START_INIT = 0x00000080, // Guarantee that .init will start |
| // executing before any non-init |
| // code in DSO is called. |
| RHF_PIXIE = 0x00000100, // Generated by pixie. |
| RHF_DEFAULT_DELAY_LOAD = 0x00000200, // Delay-load DSO by default. |
| RHF_REQUICKSTART = 0x00000400, // Object may be requickstarted |
| RHF_REQUICKSTARTED = 0x00000800, // Object has been requickstarted |
| RHF_CORD = 0x00001000, // Generated by cord. |
| RHF_NO_UNRES_UNDEF = 0x00002000, // Object contains no unresolved |
| // undef symbols. |
| RHF_RLD_ORDER_SAFE = 0x00004000 // Symbol table is in a safe order. |
| }; |
| |
| // ElfXX_VerDef structure version (GNU versioning) |
| enum { VER_DEF_NONE = 0, VER_DEF_CURRENT = 1 }; |
| |
| // VerDef Flags (ElfXX_VerDef::vd_flags) |
| enum { VER_FLG_BASE = 0x1, VER_FLG_WEAK = 0x2, VER_FLG_INFO = 0x4 }; |
| |
| // Special constants for the version table. (SHT_GNU_versym/.gnu.version) |
| enum { |
| VER_NDX_LOCAL = 0, // Unversioned local symbol |
| VER_NDX_GLOBAL = 1, // Unversioned global symbol |
| VERSYM_VERSION = 0x7fff, // Version Index mask |
| VERSYM_HIDDEN = 0x8000 // Hidden bit (non-default version) |
| }; |
| |
| // ElfXX_VerNeed structure version (GNU versioning) |
| enum { VER_NEED_NONE = 0, VER_NEED_CURRENT = 1 }; |
| |
| // SHT_NOTE section types |
| enum { |
| NT_GNU_ABI_TAG = 1, |
| NT_GNU_HWCAP = 2, |
| NT_GNU_BUILD_ID = 3, |
| NT_GNU_GOLD_VERSION = 4, |
| }; |
| |
| enum { |
| GNU_ABI_TAG_LINUX = 0, |
| GNU_ABI_TAG_HURD = 1, |
| GNU_ABI_TAG_SOLARIS = 2, |
| GNU_ABI_TAG_FREEBSD = 3, |
| GNU_ABI_TAG_NETBSD = 4, |
| GNU_ABI_TAG_SYLLABLE = 5, |
| GNU_ABI_TAG_NACL = 6, |
| }; |
| |
| // Compressed section header for ELF32. |
| struct Elf32_Chdr { |
| Elf32_Word ch_type; |
| Elf32_Word ch_size; |
| Elf32_Word ch_addralign; |
| }; |
| |
| // Compressed section header for ELF64. |
| struct Elf64_Chdr { |
| Elf64_Word ch_type; |
| Elf64_Word ch_reserved; |
| Elf64_Xword ch_size; |
| Elf64_Xword ch_addralign; |
| }; |
| |
| // Legal values for ch_type field of compressed section header. |
| enum { |
| ELFCOMPRESS_ZLIB = 1, // ZLIB/DEFLATE algorithm. |
| ELFCOMPRESS_LOOS = 0x60000000, // Start of OS-specific. |
| ELFCOMPRESS_HIOS = 0x6fffffff, // End of OS-specific. |
| ELFCOMPRESS_LOPROC = 0x70000000, // Start of processor-specific. |
| ELFCOMPRESS_HIPROC = 0x7fffffff // End of processor-specific. |
| }; |
| |
| } // end namespace ELF |
| |
| } // end namespace llvm |
| |
| #endif |
