/* p_elf_enum.h -- This file is part of the UPX executable compressor. Copyright (C) 1996-2025 Markus Franz Xaver Johannes Oberhumer Copyright (C) 1996-2025 Laszlo Molnar All Rights Reserved. UPX and the UCL library are free software; you can redistribute them and/or modify them under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. Markus F.X.J. Oberhumer Laszlo Molnar */ /************************************************************************* // Use the preprocessor to work around // - that the types embedding these enums have to be PODs, and // deriving from an empty base class (which is the usual C++ way // of "importing" enums) does not yield a POD any more // - that older compilers do not correctly perform EBCO **************************************************************************/ #if CLANG_FORMAT_DUMMY_CLASS class Dummy { #endif #ifdef WANT_EHDR_ENUM #undef WANT_EHDR_ENUM enum { // indices for e_ident[16] EI_CLASS = 4, EI_DATA = 5, // Data encoding EI_VERSION = 6, EI_OSABI = 7, EI_ABIVERSION = 8, }; enum { // e_ident[EI_CLASS] ELFCLASS32 = 1, // 32-bit objects ELFCLASS64 = 2, // 64-bit objects }; enum { // e_ident[EI_DATA] ELFDATA2LSB = 1, // 2's complement, little endian ELFDATA2MSB = 2, // 2's complement, big endian }; enum { // e_ident[EI_OSABI] ELFOSABI_NONE = 0, // == ELFOSABI_SYSV ELFOSABI_NETBSD = 2, ELFOSABI_LINUX = 3, ELFOSABI_SOLARIS = 6, ELFOSABI_AIX = 7, ELFOSABI_FREEBSD = 9, ELFOSABI_OPENBSD = 12, ELFOSABI_ARM = 97, ELFOSABI_STANDALONE = 255 // Standalone (embedded) application }; enum { // e_type 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 */ }; enum { // e_machine EM_NONE = 0, // No machine EM_386 = 3, // i386 EM_MIPS = 8, EM_MIPS_RS3_LE = 10, // MIPS R3000 little-endian EM_PPC = 20, EM_PPC64 = 21, EM_ARM = 40, EM_X86_64 = 62, // amd64 EM_AMD64 = EM_X86_64, EM_AARCH64 = 183, // arm64 EM_ARM64 = EM_AARCH64, EM_RISCV = 243, // risc-v EM_LOONGARCH = 258, }; enum { // e_version EV_CURRENT = 1, }; #endif // WANT_EHDR_ENUM #ifdef WANT_PHDR_ENUM #undef WANT_PHDR_ENUM enum { // p_type PT_NULL = 0, /* Ignore: a "comment" */ PT_LOAD = 1, /* Loadable program segment */ PT_DYNAMIC = 2, /* Dynamic linking information */ PT_INTERP = 3, /* Name of program interpreter */ PT_NOTE = 4, /* Auxiliary information (esp. OpenBSD) */ PT_PHDR = 6, /* Entry for header table itself */ PT_NUM = 8, /* Number of defined types in low range */ PT_GNU_STACK = 0x6474e551, /* Indicates stack executability */ PT_GNU_RELRO = 0x6474e552, /* Read-only after relocation */ PT_MIPS_REGINFO = 0x70000000, /* Register usage information. */ // // PT_MIPS_RTPROC = 0x70000001, /* Runtime procedure table. */ // PT_MIPS_OPTIONS = 0x70000002, PT_ARM_EXIDX = (0x70000000 + 1), /* ARM unwind segment. */ PT_MIPS_ABIFLAGS = 0x70000003, /* FP mode requirement. */ }; enum { // p_flags PF_X = 1, /* Segment is executable */ PF_W = 2, /* Segment is writable */ PF_R = 4, /* Segment is readable */ }; #endif // WANT_PHDR_ENUM #ifdef WANT_SHDR_ENUM #undef WANT_SHDR_ENUM enum { // sh_type SHT_NULL = 0, /* Section header table entry unused */ SHT_PROGBITS = 1, /* Program data */ SHT_SYMTAB = 2, /* Symbol table */ SHT_STRTAB = 3, /* String table */ SHT_RELA = 4, /* Relocation entries with addends */ SHT_HASH = 5, /* Symbol hash table */ SHT_DYNAMIC = 6, /* Dynamic linking information */ SHT_NOTE = 7, /* Notes */ SHT_NOBITS = 8, /* Program space with no data (bss) */ SHT_REL = 9, /* Relocation entries, no addends */ SHT_SHLIB = 10, /* Reserved */ SHT_DYNSYM = 11, /* Dynamic linker symbol table */ /* 12, 13 hole */ SHT_INIT_ARRAY = 14, /* Array of constructors */ SHT_FINI_ARRAY = 15, /* Array of destructors */ SHT_PREINIT_ARRAY = 16, /* Array of pre-constructors */ SHT_GROUP = 17, /* Section group */ SHT_SYMTAB_SHNDX = 18, /* Extended section indices */ SHT_RELR = 19, /* RELR relative relocations */ SHT_GNU_HASH = 0x6ffffff6, /* GNU-style hash table. */ SHT_GNU_LIBLIST = 0x6ffffff7, /* Prelink library list */ SHT_GNU_verdef = 0x6ffffffd, /* Version definition section. */ SHT_GNU_verneed = 0x6ffffffe, /* Version needs section. */ SHT_GNU_versym = 0x6fffffff, /* Version symbol table. */ SHT_LOOS = 0x60000000, /* LOcal OS; SHT_ANDROID_REL{,A} is +1, +2 */ SHT_LOPROC = 0x70000000, /* Start of processor-specific */ SHT_ARM_EXIDX = (SHT_LOPROC + 1), /* ARM unwind section. */ SHT_ARM_ATTRIBUTES = (SHT_LOPROC + 3), /* ARM attributes section. */ }; enum { // sh_flags SHF_WRITE = (1 << 0), /* Writable */ SHF_ALLOC = (1 << 1), /* Occupies memory during execution */ SHF_EXECINSTR = (1 << 2), /* Executable */ SHF_MERGE = (1 << 4), /* Might be merged */ SHF_STRINGS = (1 << 5), /* Contains nul-terminated strings */ SHF_INFO_LINK = (1 << 6), /* 'sh_info' contains SHT index */ SHF_LINK_ORDER = (1 << 7), /* Preserve order after combining */ }; #endif // WANT_SHDR_ENUM #ifdef WANT_DYN_ENUM #undef WANT_DYN_ENUM enum { // d_tag DT_NULL = 0, /* End flag */ DT_NEEDED = 1, /* Name of needed library */ DT_PLTRELSZ = 2, /* Size in bytes of PLT relocs */ DT_PLTGOT = 3, /* Processor defined value */ DT_HASH = 4, /* Hash table of symbol names */ DT_STRTAB = 5, /* String table */ DT_SYMTAB = 6, /* Symbol table */ DT_RELA = 7, /* Relocations which do contain an addend */ DT_RELASZ = 8, /* Total size of Rela relocs */ DT_RELAENT = 9, /* Size of one RELA relocation */ DT_STRSZ = 10, /* Size of string table */ DT_SYMENT = 11, /* Size of one symbol table entry */ DT_INIT = 12, /* Address of init function */ DT_FINI = 13, /* Address of termination function */ DT_REL = 17, /* Relocations which contain no addend */ DT_RELSZ = 18, /* Total size of Rel relocs */ DT_RELENT = 19, /* Size of one Rel relocation */ DT_PLTREL = 20, /* Type of reloc in PLT */ DT_TEXTREL = 22, /* Reloc might modify .text */ DT_JMPREL = 23, /* Address of PLT relocs */ DT_INIT_ARRAY = 25, /* Array with addresses of init fct */ DT_FINI_ARRAY = 26, /* Array with addresses of fini fct */ DT_INIT_ARRAYSZ = 27, /* size in bytes */ DT_FINI_ARRAYSZ = 28, /* size in bytes */ DT_PREINIT_ARRAY = 32, /* Array with addresses of preinit fct*/ DT_PREINIT_ARRAYSZ = 33, /* size in bytes */ DT_NUM = 35, /* end of easy range */ DT_CHECKSUM = 0x6ffffdf8, /* Only for prelink? */ DT_GNU_HASH = 0x6ffffef5, /* GNU-style hash table */ DT_VERSYM = 0x6ffffff0, /* version[] for each symbol */ DT_FLAGS_1 = 0x6ffffffb, /* DF_1_* */ DT_VERDEF = 0x6ffffffc, /* version definitions[] */ DT_VERNEED = 0x6ffffffe, /* version[] needed */ }; enum { // DT_FLAGS_1 DF_1_NOW = 0x00000001, /* Set RTLD_NOW for this object. */ DF_1_PIE = 0x08000000, // Position-Independent Executable (main program) }; #endif // WANT_DYN_ENUM #ifdef WANT_SYM_ENUM #undef WANT_SYM_ENUM enum { // st_bind (high 4 bits of st_info) STB_LOCAL = 0, /* Local symbol */ STB_GLOBAL = 1, /* Global symbol */ STB_WEAK = 2, /* Weak symbol */ }; enum { // st_type (low 4 bits of st_info) STT_NOTYPE = 0, /* Symbol type is unspecified */ STT_OBJECT = 1, /* Symbol is a data object */ STT_FUNC = 2, /* Symbol is a code object */ STT_SECTION = 3, /* Symbol associated with a section */ STT_FILE = 4, /* Symbol's name is file name */ STT_COMMON = 5, /* Symbol is a common data object */ STT_TLS = 6, /* Symbol is thread-local data object*/ }; enum { // st_other (visibility) STV_DEFAULT = 0, /* Default symbol visibility rules */ STV_INTERNAL = 1, /* Processor specific hidden class */ STV_HIDDEN = 2, /* Sym unavailable in other modules */ STV_PROTECTED = 3, /* Not preemptible, not exported */ }; enum { // st_shndx SHN_UNDEF = 0, /* Undefined section */ SHN_ABS = 0xfff1, /* Associated symbol is absolute */ SHN_COMMON = 0xfff2, /* Associated symbol is common */ }; #endif // WANT_SYM_ENUM #ifdef WANT_REL_ENUM #undef WANT_REL_ENUM static constexpr inline unsigned ELF32_R_TYPE(unsigned x) noexcept { return 0xff & x; } static constexpr inline unsigned ELF64_R_TYPE(upx_uint64_t x) noexcept { return 0xffffffff & (unsigned) x; } static constexpr inline unsigned ELF32_R_SYM(unsigned x) noexcept { return x >> 8; } static constexpr inline unsigned ELF64_R_SYM(upx_uint64_t x) noexcept { return x >> 32; } static constexpr inline unsigned ELF32_R_INFO(unsigned sym, unsigned type) noexcept { return (sym << 8) + (type & 0xff); } static constexpr inline upx_int64_t ELF64_R_INFO(unsigned sym, unsigned type) { return ((upx_uint64_t) sym << 32) + type; } #undef R_PPC_RELATIVE #undef R_PPC64_RELATIVE #undef R_PPC_JMP_SLOT #undef R_PPC64_JMP_SLOT enum { // relocation types R_386_RELATIVE = 8, R_AARCH64_RELATIVE = 1027, R_ARM_RELATIVE = 23, R_PPC_RELATIVE = 22, R_PPC64_RELATIVE = R_PPC_RELATIVE, R_X86_64_RELATIVE = 8, R_386_JMP_SLOT = 7, R_AARCH64_JUMP_SLOT = 1026, R_ARM_JUMP_SLOT = 22, R_PPC_JMP_SLOT = 21, R_PPC64_JMP_SLOT = R_PPC_JMP_SLOT, R_X86_64_JUMP_SLOT = 7, R_386_32 = 1, R_ARM_ABS32 = 2, R_ARM_GLOB_DAT = 21, R_MIPS_32 = 2, R_386_GLOB_DAT = 6, R_X86_64_64 = 1, R_AARCH64_ABS64 = 257, R_AARCH64_GLOB_DAT = 1025, }; #endif // WANT_REL_ENUM #ifdef WANT_NHDR_ENUM #undef WANT_NHDR_ENUM enum { // ELF PT_NOTE types #define ELF_NOTE_GNU_NAME "GNU\0" NT_GNU_ABI_TAG = 1, NT_GNU_HWCAP = 2, NT_GNU_BUILD_ID = 3, #define ELF_NOTE_OPENBSD_NAME "OpenBSD\0" NHDR_OPENBSD_TAG = 1, #define ELF_NOTE_NETBSD_NAME "NetBSD\0" NHDR_NETBSD_TAG = 1, NHDR_CHECKSUM_TAG = 2, NHDR_PAX_TAG = 3, }; enum { // descsz descriptor sizes GNU_ABI_DESCSZ = 16, // int GNU_OS, major, minor, subminor; NETBSD_DESCSZ = 4, // major_ver * (10**8) + minor OPENBSD_DESCSZ = 4, // 32-bit zero // CHECKSUM_DESCSZ is 2*sizeof(short) + sizeof(checksum) PAX_DESCSZ = 4, // 32-bit mask }; enum { // GNU OS/version GNU_OS_LINUX = 0, GNU_OS_HURD = 1, GNU_OS_SOLARIS = 2, }; enum { // NetBSD checksum methods CHECKSUM_CRC32 = 1, CHECKSUM_MD5 = 2, CHECKSUM_SHA1 = 3, CHECKSUM_SHA256 = 4, }; #define ELF_NOTE_PAX_NAME "PaX\0" enum { // NetBSD PaX bit values PAX_MPROTECT = (1 << 0), /* force enable Mprotect */ PAX_NOMPROTECT = (1 << 1), /* force disable Mprotect */ PAX_GUARD = (1 << 2), /* force enable SEGVguard */ PAX_NOGUARD = (1 << 3), /* force disable SEGVguard */ PAX_ASLR = (1 << 4), /* force enable ASLR */ PAX_NOASLR = (1 << 5), /* force disable ASLR */ }; #endif // WANT_NHDR_ENUM #if CLANG_FORMAT_DUMMY_CLASS }; // class #endif /* vim:set ts=4 sw=4 et: */