//===- llvm/BinaryFormat/ELF.h - ELF constants and structures ---*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// 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_BINARYFORMAT_ELF_H
#define LLVM_BINARYFORMAT_ELF_H
#include "llvm/ADT/StringRef.h"
#include <cstdint>
#include <cstring>
namespace llvm {
namespace ELF {
using Elf32_Addr = uint32_t; // Program address
using Elf32_Off = uint32_t; // File offset
using Elf32_Half = uint16_t;
using Elf32_Word = uint32_t;
using Elf32_Sword = int32_t;
using Elf64_Addr = uint64_t;
using Elf64_Off = uint64_t;
using Elf64_Half = uint16_t;
using Elf64_Word = uint32_t;
using Elf64_Sword = int32_t;
using Elf64_Xword = uint64_t;
using Elf64_Sxword = int64_t;
// 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.
// See current registered ELF types at:
// http://www.sco.com/developers/gabi/latest/ch4.eheader.html
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_LOOS = 0xfe00, // Beginning of operating system-specific codes
ET_HIOS = 0xfeff, // Operating system-specific
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_MICROBLAZE = 189, // Xilinx MicroBlaze 32-bit RISC soft processor core
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
EM_VE = 251, // NEC SX-Aurora VE
EM_CSKY = 252, // C-SKY 32-bit processor
EM_LOONGARCH = 258, // LoongArch
};
// 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_FIRST_ARCH = 64, // First architecture-specific OS ABI
ELFOSABI_AMDGPU_HSA = 64, // AMD HSA runtime
ELFOSABI_AMDGPU_PAL = 65, // AMD PAL runtime
ELFOSABI_AMDGPU_MESA3D = 66, // AMD GCN GPUs (GFX6+) for MESA runtime
ELFOSABI_ARM = 97, // ARM
ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000
ELFOSABI_C6000_LINUX = 65, // Linux TMS320C6000
ELFOSABI_STANDALONE = 255, // Standalone (embedded) application
ELFOSABI_LAST_ARCH = 255 // Last Architecture-specific OS ABI
};
// AMDGPU OS ABI Version identification.
enum {
// ELFABIVERSION_AMDGPU_HSA_V1 does not exist because OS ABI identification
// was never defined for V1.
ELFABIVERSION_AMDGPU_HSA_V2 = 0,
ELFABIVERSION_AMDGPU_HSA_V3 = 1,
ELFABIVERSION_AMDGPU_HSA_V4 = 2,
ELFABIVERSION_AMDGPU_HSA_V5 = 3
};
#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;
}
// ELF Relocation types for PPC64
enum {
#include "ELFRelocs/PowerPC64.def"
};
// ELF Relocation types for AArch64
enum {
#include "ELFRelocs/AArch64.def"
};
// Special values for the st_other field in the symbol table entry for AArch64.
enum {
// Symbol may follow different calling convention than base PCS.
STO_AARCH64_VARIANT_PCS = 0x80
};
// ARM Specific e_flags
enum : unsigned {
EF_ARM_SOFT_FLOAT = 0x00000200U, // Legacy pre EABI_VER5
EF_ARM_ABI_FLOAT_SOFT = 0x00000200U, // EABI_VER5
EF_ARM_VFP_FLOAT = 0x00000400U, // Legacy pre EABI_VER5
EF_ARM_ABI_FLOAT_HARD = 0x00000400U, // EABI_VER5
EF_ARM_BE8 = 0x00800000U,
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"
};
// ARC Specific e_flags
enum : unsigned {
EF_ARC_MACH_MSK = 0x000000ff,
EF_ARC_OSABI_MSK = 0x00000f00,
E_ARC_MACH_ARC600 = 0x00000002,
E_ARC_MACH_ARC601 = 0x00000004,
E_ARC_MACH_ARC700 = 0x00000003,
EF_ARC_CPU_ARCV2EM = 0x00000005,
EF_ARC_CPU_ARCV2HS = 0x00000006,
E_ARC_OSABI_ORIG = 0x00000000,
E_ARC_OSABI_V2 = 0x00000200,
E_ARC_OSABI_V3 = 0x00000300,
E_ARC_OSABI_V4 = 0x00000400,
EF_ARC_PIC = 0x00000100
};
// ELF Relocation types for ARC
enum {
#include "ELFRelocs/ARC.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,
EF_AVR_ARCH_MASK = 0x7f, // EF_AVR_ARCH_xxx selection mask
EF_AVR_LINKRELAX_PREPARED = 0x80, // The file is prepared for linker
// relaxation to be applied
};
// 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
};
// MIPS-specific section indexes
enum {
SHN_MIPS_ACOMMON = 0xff00, // Common symbols which are defined and allocated
SHN_MIPS_TEXT = 0xff01, // Not ABI compliant
SHN_MIPS_DATA = 0xff02, // Not ABI compliant
SHN_MIPS_SCOMMON = 0xff03, // Common symbols for global data area
SHN_MIPS_SUNDEFINED = 0xff04 // Undefined symbols for global data area
};
// 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
EF_HEXAGON_MACH_V62 = 0x00000062, // Hexagon V62
EF_HEXAGON_MACH_V65 = 0x00000065, // Hexagon V65
EF_HEXAGON_MACH_V66 = 0x00000066, // Hexagon V66
EF_HEXAGON_MACH_V67 = 0x00000067, // Hexagon V67
EF_HEXAGON_MACH_V67T = 0x00008067, // Hexagon V67T
EF_HEXAGON_MACH_V68 = 0x00000068, // Hexagon V68
EF_HEXAGON_MACH_V69 = 0x00000069, // Hexagon V69
EF_HEXAGON_MACH_V71 = 0x00000071, // Hexagon V71
EF_HEXAGON_MACH_V71T = 0x00008071, // Hexagon V71T
EF_HEXAGON_MACH_V73 = 0x00000073, // Hexagon V73
EF_HEXAGON_MACH = 0x000003ff, // Hexagon V..
// 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
EF_HEXAGON_ISA_V62 = 0x00000062, // Hexagon V62 ISA
EF_HEXAGON_ISA_V65 = 0x00000065, // Hexagon V65 ISA
EF_HEXAGON_ISA_V66 = 0x00000066, // Hexagon V66 ISA
EF_HEXAGON_ISA_V67 = 0x00000067, // Hexagon V67 ISA
EF_HEXAGON_ISA_V68 = 0x00000068, // Hexagon V68 ISA
EF_HEXAGON_ISA_V69 = 0x00000069, // Hexagon V69 ISA
EF_HEXAGON_ISA_V71 = 0x00000071, // Hexagon V71 ISA
EF_HEXAGON_ISA_V73 = 0x00000073, // Hexagon V73 ISA
EF_HEXAGON_ISA_V75 = 0x00000075, // Hexagon V75 ISA
EF_HEXAGON_ISA = 0x000003ff, // Hexagon V.. 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"
};
// RISCV Specific e_flags
enum : unsigned {
EF_RISCV_RVC = 0x0001,
EF_RISCV_FLOAT_ABI = 0x0006,
EF_RISCV_FLOAT_ABI_SOFT = 0x0000,
EF_RISCV_FLOAT_ABI_SINGLE = 0x0002,
EF_RISCV_FLOAT_ABI_DOUBLE = 0x0004,
EF_RISCV_FLOAT_ABI_QUAD = 0x0006,
EF_RISCV_RVE = 0x0008,
EF_RISCV_TSO = 0x0010,
};
// ELF Relocation types for RISC-V
enum {
#include "ELFRelocs/RISCV.def"
};
enum {
// Symbol may follow different calling convention than the standard calling
// convention.
STO_RISCV_VARIANT_CC = 0x80
};
// ELF Relocation types for S390/zSeries
enum {
#include "ELFRelocs/SystemZ.def"
};
// ELF Relocation type for Sparc.
enum {
#include "ELFRelocs/Sparc.def"
};
// AMDGPU specific e_flags.
enum : unsigned {
// Processor selection mask for EF_AMDGPU_MACH_* values.
EF_AMDGPU_MACH = 0x0ff,
// Not specified processor.
EF_AMDGPU_MACH_NONE = 0x000,
// R600-based processors.
// Radeon HD 2000/3000 Series (R600).
EF_AMDGPU_MACH_R600_R600 = 0x001,
EF_AMDGPU_MACH_R600_R630 = 0x002,
EF_AMDGPU_MACH_R600_RS880 = 0x003,
EF_AMDGPU_MACH_R600_RV670 = 0x004,
// Radeon HD 4000 Series (R700).
EF_AMDGPU_MACH_R600_RV710 = 0x005,
EF_AMDGPU_MACH_R600_RV730 = 0x006,
EF_AMDGPU_MACH_R600_RV770 = 0x007,
// Radeon HD 5000 Series (Evergreen).
EF_AMDGPU_MACH_R600_CEDAR = 0x008,
EF_AMDGPU_MACH_R600_CYPRESS = 0x009,
EF_AMDGPU_MACH_R600_JUNIPER = 0x00a,
EF_AMDGPU_MACH_R600_REDWOOD = 0x00b,
EF_AMDGPU_MACH_R600_SUMO = 0x00c,
// Radeon HD 6000 Series (Northern Islands).
EF_AMDGPU_MACH_R600_BARTS = 0x00d,
EF_AMDGPU_MACH_R600_CAICOS = 0x00e,
EF_AMDGPU_MACH_R600_CAYMAN = 0x00f,
EF_AMDGPU_MACH_R600_TURKS = 0x010,
// Reserved for R600-based processors.
EF_AMDGPU_MACH_R600_RESERVED_FIRST = 0x011,
EF_AMDGPU_MACH_R600_RESERVED_LAST = 0x01f,
// First/last R600-based processors.
EF_AMDGPU_MACH_R600_FIRST = EF_AMDGPU_MACH_R600_R600,
EF_AMDGPU_MACH_R600_LAST = EF_AMDGPU_MACH_R600_TURKS,
// AMDGCN-based processors.
EF_AMDGPU_MACH_AMDGCN_GFX600 = 0x020,
EF_AMDGPU_MACH_AMDGCN_GFX601 = 0x021,
EF_AMDGPU_MACH_AMDGCN_GFX700 = 0x022,
EF_AMDGPU_MACH_AMDGCN_GFX701 = 0x023,
EF_AMDGPU_MACH_AMDGCN_GFX702 = 0x024,
EF_AMDGPU_MACH_AMDGCN_GFX703 = 0x025,
EF_AMDGPU_MACH_AMDGCN_GFX704 = 0x026,
EF_AMDGPU_MACH_AMDGCN_RESERVED_0X27 = 0x027,
EF_AMDGPU_MACH_AMDGCN_GFX801 = 0x028,
EF_AMDGPU_MACH_AMDGCN_GFX802 = 0x029,
EF_AMDGPU_MACH_AMDGCN_GFX803 = 0x02a,
EF_AMDGPU_MACH_AMDGCN_GFX810 = 0x02b,
EF_AMDGPU_MACH_AMDGCN_GFX900 = 0x02c,
EF_AMDGPU_MACH_AMDGCN_GFX902 = 0x02d,
EF_AMDGPU_MACH_AMDGCN_GFX904 = 0x02e,
EF_AMDGPU_MACH_AMDGCN_GFX906 = 0x02f,
EF_AMDGPU_MACH_AMDGCN_GFX908 = 0x030,
EF_AMDGPU_MACH_AMDGCN_GFX909 = 0x031,
EF_AMDGPU_MACH_AMDGCN_GFX90C = 0x032,
EF_AMDGPU_MACH_AMDGCN_GFX1010 = 0x033,
EF_AMDGPU_MACH_AMDGCN_GFX1011 = 0x034,
EF_AMDGPU_MACH_AMDGCN_GFX1012 = 0x035,
EF_AMDGPU_MACH_AMDGCN_GFX1030 = 0x036,
EF_AMDGPU_MACH_AMDGCN_GFX1031 = 0x037,
EF_AMDGPU_MACH_AMDGCN_GFX1032 = 0x038,
EF_AMDGPU_MACH_AMDGCN_GFX1033 = 0x039,
EF_AMDGPU_MACH_AMDGCN_GFX602 = 0x03a,
EF_AMDGPU_MACH_AMDGCN_GFX705 = 0x03b,
EF_AMDGPU_MACH_AMDGCN_GFX805 = 0x03c,
EF_AMDGPU_MACH_AMDGCN_GFX1035 = 0x03d,
EF_AMDGPU_MACH_AMDGCN_GFX1034 = 0x03e,
EF_AMDGPU_MACH_AMDGCN_GFX90A = 0x03f,
EF_AMDGPU_MACH_AMDGCN_GFX940 = 0x040,
EF_AMDGPU_MACH_AMDGCN_GFX1100 = 0x041,
EF_AMDGPU_MACH_AMDGCN_GFX1013 = 0x042,
EF_AMDGPU_MACH_AMDGCN_RESERVED_0X43 = 0x043,
EF_AMDGPU_MACH_AMDGCN_GFX1103 = 0x044,
EF_AMDGPU_MACH_AMDGCN_GFX1036 = 0x045,
EF_AMDGPU_MACH_AMDGCN_GFX1101 = 0x046,
EF_AMDGPU_MACH_AMDGCN_GFX1102 = 0x047,
// First/last AMDGCN-based processors.
EF_AMDGPU_MACH_AMDGCN_FIRST = EF_AMDGPU_MACH_AMDGCN_GFX600,
EF_AMDGPU_MACH_AMDGCN_LAST = EF_AMDGPU_MACH_AMDGCN_GFX1102,
// Indicates if the "xnack" target feature is enabled for all code contained
// in the object.
//
// Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V2.
EF_AMDGPU_FEATURE_XNACK_V2 = 0x01,
// Indicates if the trap handler is enabled for all code contained
// in the object.
//
// Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V2.
EF_AMDGPU_FEATURE_TRAP_HANDLER_V2 = 0x02,
// Indicates if the "xnack" target feature is enabled for all code contained
// in the object.
//
// Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V3.
EF_AMDGPU_FEATURE_XNACK_V3 = 0x100,
// Indicates if the "sramecc" target feature is enabled for all code
// contained in the object.
//
// Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V3.
EF_AMDGPU_FEATURE_SRAMECC_V3 = 0x200,
// XNACK selection mask for EF_AMDGPU_FEATURE_XNACK_* values.
//
// Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V4.
EF_AMDGPU_FEATURE_XNACK_V4 = 0x300,
// XNACK is not supported.
EF_AMDGPU_FEATURE_XNACK_UNSUPPORTED_V4 = 0x000,
// XNACK is any/default/unspecified.
EF_AMDGPU_FEATURE_XNACK_ANY_V4 = 0x100,
// XNACK is off.
EF_AMDGPU_FEATURE_XNACK_OFF_V4 = 0x200,
// XNACK is on.
EF_AMDGPU_FEATURE_XNACK_ON_V4 = 0x300,
// SRAMECC selection mask for EF_AMDGPU_FEATURE_SRAMECC_* values.
//
// Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V4.
EF_AMDGPU_FEATURE_SRAMECC_V4 = 0xc00,
// SRAMECC is not supported.
EF_AMDGPU_FEATURE_SRAMECC_UNSUPPORTED_V4 = 0x000,
// SRAMECC is any/default/unspecified.
EF_AMDGPU_FEATURE_SRAMECC_ANY_V4 = 0x400,
// SRAMECC is off.
EF_AMDGPU_FEATURE_SRAMECC_OFF_V4 = 0x800,
// SRAMECC is on.
EF_AMDGPU_FEATURE_SRAMECC_ON_V4 = 0xc00,
};
// ELF Relocation types for AMDGPU
enum {
#include "ELFRelocs/AMDGPU.def"
};
// ELF Relocation types for BPF
enum {
#include "ELFRelocs/BPF.def"
};
// ELF Relocation types for M68k
enum {
#include "ELFRelocs/M68k.def"
};
// MSP430 specific e_flags
enum : unsigned {
EF_MSP430_MACH_MSP430x11 = 11,
EF_MSP430_MACH_MSP430x11x1 = 110,
EF_MSP430_MACH_MSP430x12 = 12,
EF_MSP430_MACH_MSP430x13 = 13,
EF_MSP430_MACH_MSP430x14 = 14,
EF_MSP430_MACH_MSP430x15 = 15,
EF_MSP430_MACH_MSP430x16 = 16,
EF_MSP430_MACH_MSP430x20 = 20,
EF_MSP430_MACH_MSP430x22 = 22,
EF_MSP430_MACH_MSP430x23 = 23,
EF_MSP430_MACH_MSP430x24 = 24,
EF_MSP430_MACH_MSP430x26 = 26,
EF_MSP430_MACH_MSP430x31 = 31,
EF_MSP430_MACH_MSP430x32 = 32,
EF_MSP430_MACH_MSP430x33 = 33,
EF_MSP430_MACH_MSP430x41 = 41,
EF_MSP430_MACH_MSP430x42 = 42,
EF_MSP430_MACH_MSP430x43 = 43,
EF_MSP430_MACH_MSP430x44 = 44,
EF_MSP430_MACH_MSP430X = 45,
EF_MSP430_MACH_MSP430x46 = 46,
EF_MSP430_MACH_MSP430x47 = 47,
EF_MSP430_MACH_MSP430x54 = 54,
};
// ELF Relocation types for MSP430
enum {
#include "ELFRelocs/MSP430.def"
};
// ELF Relocation type for VE.
enum {
#include "ELFRelocs/VE.def"
};
// CSKY Specific e_flags
enum : unsigned {
EF_CSKY_801 = 0xa,
EF_CSKY_802 = 0x10,
EF_CSKY_803 = 0x9,
EF_CSKY_805 = 0x11,
EF_CSKY_807 = 0x6,
EF_CSKY_810 = 0x8,
EF_CSKY_860 = 0xb,
EF_CSKY_800 = 0x1f,
EF_CSKY_FLOAT = 0x2000,
EF_CSKY_DSP = 0x4000,
EF_CSKY_ABIV2 = 0x20000000,
EF_CSKY_EFV1 = 0x1000000,
EF_CSKY_EFV2 = 0x2000000,
EF_CSKY_EFV3 = 0x3000000
};
// ELF Relocation types for CSKY
enum {
#include "ELFRelocs/CSKY.def"
};
// LoongArch Specific e_flags
enum : unsigned {
// Definitions from LoongArch ELF psABI v2.01.
// Reference: https://github.com/loongson/LoongArch-Documentation
// (commit hash 296de4def055c871809068e0816325a4ac04eb12)
// Base ABI Modifiers
EF_LOONGARCH_ABI_SOFT_FLOAT = 0x1,
EF_LOONGARCH_ABI_SINGLE_FLOAT = 0x2,
EF_LOONGARCH_ABI_DOUBLE_FLOAT = 0x3,
EF_LOONGARCH_ABI_MODIFIER_MASK = 0x7,
// Object file ABI versions
EF_LOONGARCH_OBJABI_V0 = 0x0,
EF_LOONGARCH_OBJABI_V1 = 0x40,
EF_LOONGARCH_OBJABI_MASK = 0xC0,
};
// ELF Relocation types for LoongArch
enum {
#include "ELFRelocs/LoongArch.def"
};
// Xtensa specific e_flags
enum : unsigned {
// Four-bit Xtensa machine type mask.
EF_XTENSA_MACH = 0x0000000f,
// Various CPU types.
EF_XTENSA_MACH_NONE = 0x00000000, // A base Xtensa implementation
EF_XTENSA_XT_INSN = 0x00000100,
EF_XTENSA_XT_LIT = 0x00000200,
};
// ELF Relocation types for Xtensa
enum {
#include "ELFRelocs/Xtensa.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.
// Experimental support for SHT_RELR sections. For details, see proposal
// at https://groups.google.com/forum/#!topic/generic-abi/bX460iggiKg
SHT_RELR = 19, // Relocation entries; only offsets.
SHT_LOOS = 0x60000000, // Lowest operating system-specific type.
// Android packed relocation section types.
// https://android.googlesource.com/platform/bionic/+/6f12bfece5dcc01325e0abba56a46b1bcf991c69/tools/relocation_packer/src/elf_file.cc#37
SHT_ANDROID_REL = 0x60000001,
SHT_ANDROID_RELA = 0x60000002,
SHT_LLVM_ODRTAB = 0x6fff4c00, // LLVM ODR table.
SHT_LLVM_LINKER_OPTIONS = 0x6fff4c01, // LLVM Linker Options.
SHT_LLVM_ADDRSIG = 0x6fff4c03, // List of address-significant symbols
// for safe ICF.
SHT_LLVM_DEPENDENT_LIBRARIES =
0x6fff4c04, // LLVM Dependent Library Specifiers.
SHT_LLVM_SYMPART = 0x6fff4c05, // Symbol partition specification.
SHT_LLVM_PART_EHDR = 0x6fff4c06, // ELF header for loadable partition.
SHT_LLVM_PART_PHDR = 0x6fff4c07, // Phdrs for loadable partition.
SHT_LLVM_BB_ADDR_MAP_V0 =
0x6fff4c08, // LLVM Basic Block Address Map (old version kept for
// backward-compatibility).
SHT_LLVM_CALL_GRAPH_PROFILE = 0x6fff4c09, // LLVM Call Graph Profile.
SHT_LLVM_BB_ADDR_MAP = 0x6fff4c0a, // LLVM Basic Block Address Map.
SHT_LLVM_OFFLOADING = 0x6fff4c0b, // LLVM device offloading data.
// Android's experimental support for SHT_RELR sections.
// https://android.googlesource.com/platform/bionic/+/b7feec74547f84559a1467aca02708ff61346d2a/libc/include/elf.h#512
SHT_ANDROID_RELR = 0x6fffff00, // Relocation entries; only offsets.
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,
// Special aarch64-specific sections for MTE support, as described in:
// https://github.com/ARM-software/abi-aa/blob/main/memtagabielf64/memtagabielf64.rst#7section-types
SHT_AARCH64_MEMTAG_GLOBALS_STATIC = 0x70000007U,
SHT_AARCH64_MEMTAG_GLOBALS_DYNAMIC = 0x70000008U,
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_DWARF = 0x7000001e, // DWARF debugging section.
SHT_MIPS_ABIFLAGS = 0x7000002a, // ABI information.
SHT_MSP430_ATTRIBUTES = 0x70000003U,
SHT_RISCV_ATTRIBUTES = 0x70000003U,
SHT_CSKY_ATTRIBUTES = 0x70000001U,
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 should not be garbage collected by the linker.
SHF_GNU_RETAIN = 0x200000,
// This section is excluded from the final executable or shared library.
SHF_EXCLUDE = 0x80000000U,
// Start of target-specific flags.
SHF_MASKOS = 0x0ff00000,
// Solaris equivalent of SHF_GNU_RETAIN.
SHF_SUNW_NODISCARD = 0x00100000,
// Bits indicating processor-specific flags.
SHF_MASKPROC = 0xf0000000,
/// 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 = 0x10000000,
/// 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 = 0x20000000,
// 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
};
// 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
};
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 or info (relative relocations only).
typedef Elf32_Word Elf32_Relr; // offset/bitmap for relative relocations
// 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);
}
};
// Relocation entry without explicit addend or info (relative relocations only).
typedef Elf64_Xword Elf64_Relr; // offset/bitmap for relative relocations
// 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_GNU_PROPERTY = 0x6474e553, // .note.gnu.property notes sections.
PT_OPENBSD_MUTABLE = 0x65a3dbe5, // Like bss, but not immutable.
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,
// MTE memory tag segment type
PT_AARCH64_MEMTAG_MTE = 0x70000002,
// 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.
// RISCV program header types.
PT_RISCV_ATTRIBUTES = 0x70000003,
};
// 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 {
#define DYNAMIC_TAG(name, value) DT_##name = value,
#include "DynamicTags.def"
#undef DYNAMIC_TAG
};
// 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.
DF_1_PIE = 0x08000000, // Object is a position-independent executable.
};
// 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.
// Generic note types.
enum : unsigned {
NT_VERSION = 1,
NT_ARCH = 2,
NT_GNU_BUILD_ATTRIBUTE_OPEN = 0x100,
NT_GNU_BUILD_ATTRIBUTE_FUNC = 0x101,
};
// Core note types.
enum : unsigned {
NT_PRSTATUS = 1,
NT_FPREGSET = 2,
NT_PRPSINFO = 3,
NT_TASKSTRUCT = 4,
NT_AUXV = 6,
NT_PSTATUS = 10,
NT_FPREGS = 12,
NT_PSINFO = 13,
NT_LWPSTATUS = 16,
NT_LWPSINFO = 17,
NT_WIN32PSTATUS = 18,
NT_PPC_VMX = 0x100,
NT_PPC_VSX = 0x102,
NT_PPC_TAR = 0x103,
NT_PPC_PPR = 0x104,
NT_PPC_DSCR = 0x105,
NT_PPC_EBB = 0x106,
NT_PPC_PMU = 0x107,
NT_PPC_TM_CGPR = 0x108,
NT_PPC_TM_CFPR = 0x109,
NT_PPC_TM_CVMX = 0x10a,
NT_PPC_TM_CVSX = 0x10b,
NT_PPC_TM_SPR = 0x10c,
NT_PPC_TM_CTAR = 0x10d,
NT_PPC_TM_CPPR = 0x10e,
NT_PPC_TM_CDSCR = 0x10f,
NT_386_TLS = 0x200,
NT_386_IOPERM = 0x201,
NT_X86_XSTATE = 0x202,
NT_S390_HIGH_GPRS = 0x300,
NT_S390_TIMER = 0x301,
NT_S390_TODCMP = 0x302,
NT_S390_TODPREG = 0x303,
NT_S390_CTRS = 0x304,
NT_S390_PREFIX = 0x305,
NT_S390_LAST_BREAK = 0x306,
NT_S390_SYSTEM_CALL = 0x307,
NT_S390_TDB = 0x308,
NT_S390_VXRS_LOW = 0x309,
NT_S390_VXRS_HIGH = 0x30a,
NT_S390_GS_CB = 0x30b,
NT_S390_GS_BC = 0x30c,
NT_ARM_VFP = 0x400,
NT_ARM_TLS = 0x401,
NT_ARM_HW_BREAK = 0x402,
NT_ARM_HW_WATCH = 0x403,
NT_ARM_SVE = 0x405,
NT_ARM_PAC_MASK = 0x406,
NT_FILE = 0x46494c45,
NT_PRXFPREG = 0x46e62b7f,
NT_SIGINFO = 0x53494749,
};
// LLVM-specific notes.
enum {
NT_LLVM_HWASAN_GLOBALS = 3,
};
// GNU note types.
enum {
NT_GNU_ABI_TAG = 1,
NT_GNU_HWCAP = 2,
NT_GNU_BUILD_ID = 3,
NT_GNU_GOLD_VERSION = 4,
NT_GNU_PROPERTY_TYPE_0 = 5,
FDO_PACKAGING_METADATA = 0xcafe1a7e,
};
// Android note types.
enum {
NT_ANDROID_TYPE_IDENT = 1,
NT_ANDROID_TYPE_KUSER = 3,
NT_ANDROID_TYPE_MEMTAG = 4,
};
// Memory tagging values used in NT_ANDROID_TYPE_MEMTAG notes.
enum {
// Enumeration to determine the tagging mode. In Android-land, 'SYNC' means
// running all threads in MTE Synchronous mode, and 'ASYNC' means to use the
// kernels auto-upgrade feature to allow for either MTE Asynchronous,
// Asymmetric, or Synchronous mode. This allows silicon vendors to specify, on
// a per-cpu basis what 'ASYNC' should mean. Generally, the expectation is
// "pick the most precise mode that's very fast".
NT_MEMTAG_LEVEL_NONE = 0,
NT_MEMTAG_LEVEL_ASYNC = 1,
NT_MEMTAG_LEVEL_SYNC = 2,
NT_MEMTAG_LEVEL_MASK = 3,
// Bits indicating whether the loader should prepare for MTE to be enabled on
// the heap and/or stack.
NT_MEMTAG_HEAP = 4,
NT_MEMTAG_STACK = 8,
};
// Property types used in GNU_PROPERTY_TYPE_0 notes.
enum : unsigned {
GNU_PROPERTY_STACK_SIZE = 1,
GNU_PROPERTY_NO_COPY_ON_PROTECTED = 2,
GNU_PROPERTY_AARCH64_FEATURE_1_AND = 0xc0000000,
GNU_PROPERTY_X86_FEATURE_1_AND = 0xc0000002,
GNU_PROPERTY_X86_UINT32_OR_LO = 0xc0008000,
GNU_PROPERTY_X86_FEATURE_2_NEEDED = GNU_PROPERTY_X86_UINT32_OR_LO + 1,
GNU_PROPERTY_X86_ISA_1_NEEDED = GNU_PROPERTY_X86_UINT32_OR_LO + 2,
GNU_PROPERTY_X86_UINT32_OR_AND_LO = 0xc0010000,
GNU_PROPERTY_X86_FEATURE_2_USED = GNU_PROPERTY_X86_UINT32_OR_AND_LO + 1,
GNU_PROPERTY_X86_ISA_1_USED = GNU_PROPERTY_X86_UINT32_OR_AND_LO + 2,
};
// aarch64 processor feature bits.
enum : unsigned {
GNU_PROPERTY_AARCH64_FEATURE_1_BTI = 1 << 0,
GNU_PROPERTY_AARCH64_FEATURE_1_PAC = 1 << 1,
};
// x86 processor feature bits.
enum : unsigned {
GNU_PROPERTY_X86_FEATURE_1_IBT = 1 << 0,
GNU_PROPERTY_X86_FEATURE_1_SHSTK = 1 << 1,
GNU_PROPERTY_X86_FEATURE_2_X86 = 1 << 0,
GNU_PROPERTY_X86_FEATURE_2_X87 = 1 << 1,
GNU_PROPERTY_X86_FEATURE_2_MMX = 1 << 2,
GNU_PROPERTY_X86_FEATURE_2_XMM = 1 << 3,
GNU_PROPERTY_X86_FEATURE_2_YMM = 1 << 4,
GNU_PROPERTY_X86_FEATURE_2_ZMM = 1 << 5,
GNU_PROPERTY_X86_FEATURE_2_FXSR = 1 << 6,
GNU_PROPERTY_X86_FEATURE_2_XSAVE = 1 << 7,
GNU_PROPERTY_X86_FEATURE_2_XSAVEOPT = 1 << 8,
GNU_PROPERTY_X86_FEATURE_2_XSAVEC = 1 << 9,
GNU_PROPERTY_X86_ISA_1_BASELINE = 1 << 0,
GNU_PROPERTY_X86_ISA_1_V2 = 1 << 1,
GNU_PROPERTY_X86_ISA_1_V3 = 1 << 2,
GNU_PROPERTY_X86_ISA_1_V4 = 1 << 3,
};
// FreeBSD note types.
enum {
NT_FREEBSD_ABI_TAG = 1,
NT_FREEBSD_NOINIT_TAG = 2,
NT_FREEBSD_ARCH_TAG = 3,
NT_FREEBSD_FEATURE_CTL = 4,
};
// NT_FREEBSD_FEATURE_CTL values (see FreeBSD's sys/sys/elf_common.h).
enum {
NT_FREEBSD_FCTL_ASLR_DISABLE = 0x00000001,
NT_FREEBSD_FCTL_PROTMAX_DISABLE = 0x00000002,
NT_FREEBSD_FCTL_STKGAP_DISABLE = 0x00000004,
NT_FREEBSD_FCTL_WXNEEDED = 0x00000008,
NT_FREEBSD_FCTL_LA48 = 0x00000010,
NT_FREEBSD_FCTL_ASG_DISABLE = 0x00000020,
};
// FreeBSD core note types.
enum {
NT_FREEBSD_THRMISC = 7,
NT_FREEBSD_PROCSTAT_PROC = 8,
NT_FREEBSD_PROCSTAT_FILES = 9,
NT_FREEBSD_PROCSTAT_VMMAP = 10,
NT_FREEBSD_PROCSTAT_GROUPS = 11,
NT_FREEBSD_PROCSTAT_UMASK = 12,
NT_FREEBSD_PROCSTAT_RLIMIT = 13,
NT_FREEBSD_PROCSTAT_OSREL = 14,
NT_FREEBSD_PROCSTAT_PSSTRINGS = 15,
NT_FREEBSD_PROCSTAT_AUXV = 16,
};
// NetBSD core note types.
enum {
NT_NETBSDCORE_PROCINFO = 1,
NT_NETBSDCORE_AUXV = 2,
NT_NETBSDCORE_LWPSTATUS = 24,
};
// OpenBSD core note types.
enum {
NT_OPENBSD_PROCINFO = 10,
NT_OPENBSD_AUXV = 11,
NT_OPENBSD_REGS = 20,
NT_OPENBSD_FPREGS = 21,
NT_OPENBSD_XFPREGS = 22,
NT_OPENBSD_WCOOKIE = 23,
};
// AMDGPU-specific section indices.
enum {
SHN_AMDGPU_LDS = 0xff00, // Variable in LDS; symbol encoded like SHN_COMMON
};
// AMD vendor specific notes. (Code Object V2)
enum {
NT_AMD_HSA_CODE_OBJECT_VERSION = 1,
NT_AMD_HSA_HSAIL = 2,
NT_AMD_HSA_ISA_VERSION = 3,
// Note types with values between 4 and 9 (inclusive) are reserved.
NT_AMD_HSA_METADATA = 10,
NT_AMD_HSA_ISA_NAME = 11,
NT_AMD_PAL_METADATA = 12
};
// AMDGPU vendor specific notes. (Code Object V3)
enum {
// Note types with values between 0 and 31 (inclusive) are reserved.
NT_AMDGPU_METADATA = 32
};
// LLVMOMPOFFLOAD specific notes.
enum : unsigned {
NT_LLVM_OPENMP_OFFLOAD_VERSION = 1,
NT_LLVM_OPENMP_OFFLOAD_PRODUCER = 2,
NT_LLVM_OPENMP_OFFLOAD_PRODUCER_VERSION = 3
};
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,
};
constexpr const char *ELF_NOTE_GNU = "GNU";
// Android packed relocation group flags.
enum {
RELOCATION_GROUPED_BY_INFO_FLAG = 1,
RELOCATION_GROUPED_BY_OFFSET_DELTA_FLAG = 2,
RELOCATION_GROUPED_BY_ADDEND_FLAG = 4,
RELOCATION_GROUP_HAS_ADDEND_FLAG = 8,
};
// 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;
};
// Note header for ELF32.
struct Elf32_Nhdr {
Elf32_Word n_namesz;
Elf32_Word n_descsz;
Elf32_Word n_type;
};
// Note header for ELF64.
struct Elf64_Nhdr {
Elf64_Word n_namesz;
Elf64_Word n_descsz;
Elf64_Word n_type;
};
// Legal values for ch_type field of compressed section header.
enum {
ELFCOMPRESS_ZLIB = 1, // ZLIB/DEFLATE algorithm.
ELFCOMPRESS_ZSTD = 2, // Zstandard 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.
};
/// Convert an architecture name into ELF's e_machine value.
uint16_t convertArchNameToEMachine(StringRef Arch);
/// Convert an ELF's e_machine value into an architecture name.
StringRef convertEMachineToArchName(uint16_t EMachine);
} // end namespace ELF
} // end namespace llvm
#endif // LLVM_BINARYFORMAT_ELF_H