575 lines
23 KiB
C++
575 lines
23 KiB
C++
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/**************************** elf.cpp *********************************
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* Author: Agner Fog
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* Date created: 2006-07-18
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* Last modified: 2017-10-18
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* Project: objconv
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* Module: elf.cpp
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* Description:
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* Module for reading ELF files
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*
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* Class CELF is used for reading, interpreting and dumping ELF files.
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*
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* Copyright 2006-2017 GNU General Public License http://www.gnu.org/licenses
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*****************************************************************************/
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#include "stdafx.h"
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// All functions in this module are templated to make two versions: 32 and 64 bits.
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// See instantiations at the end of this file.
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// File class names
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SIntTxt ELFFileClassNames[] = {
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{ELFCLASSNONE, "None"},
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{ELFCLASS32, "32-bit object"},
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{ELFCLASS64, "64-bit object"}
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};
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// Data encoding names
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SIntTxt ELFDataEncodeNames[] = {
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{ELFDATANONE, "None"},
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{ELFDATA2LSB, "Little Endian"},
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{ELFDATA2MSB, "Big Endian"}
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};
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// ABI names
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SIntTxt ELFABINames[] = {
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{ELFOSABI_SYSV, "System V"},
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{ELFOSABI_HPUX, "HP-UX"},
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{ELFOSABI_ARM, "ARM"},
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{ELFOSABI_STANDALONE,"Embedded"},
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};
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// File type names
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SIntTxt ELFFileTypeNames[] = {
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{ET_NONE, "None"},
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{ET_REL, "Relocatable"},
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{ET_EXEC, "Executable"},
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{ET_DYN, "Shared object"},
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{ET_CORE, "Core file"}
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};
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// Section type names
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SIntTxt ELFSectionTypeNames[] = {
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{SHT_NULL, "None"},
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{SHT_PROGBITS, "Program data"},
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{SHT_SYMTAB, "Symbol table"},
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{SHT_STRTAB, "String table"},
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{SHT_RELA, "Relocation w addends"},
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{SHT_HASH, "Symbol hash table"},
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{SHT_DYNAMIC, "Dynamic linking info"},
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{SHT_NOTE, "Notes"},
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{SHT_NOBITS, "bss"},
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{SHT_REL, "Relocation entries"},
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{SHT_SHLIB, "Reserved"},
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{SHT_DYNSYM, "Dynamic linker symbol table"},
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{SHT_INIT_ARRAY, "Array of constructors"},
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{SHT_FINI_ARRAY, "Array of destructors"},
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{SHT_PREINIT_ARRAY, "Array of pre-constructors"},
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{SHT_GROUP, "Section group"},
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{SHT_SYMTAB_SHNDX, "Extended section indices"}
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};
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// Section flag names
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SIntTxt ELFSectionFlagNames[] = {
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{SHF_WRITE, "Writeable"},
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{SHF_ALLOC, "Allocate"},
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{SHF_EXECINSTR, "Executable"},
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{SHF_MERGE, "Merge"},
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{SHF_STRINGS, "Strings"},
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{SHF_INFO_LINK, "sh_info"},
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{SHF_LINK_ORDER, "Preserve order"},
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{SHF_OS_NONCONFORMING,"OS specific"}
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};
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// Symbol binding names
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SIntTxt ELFSymbolBindingNames[] = {
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{STB_LOCAL, "Local"},
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{STB_GLOBAL, "Global"},
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{STB_WEAK, "Weak"}
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};
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// Symbol Type names
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SIntTxt ELFSymbolTypeNames[] = {
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{STT_NOTYPE, "None"},
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{STT_OBJECT, "Object"},
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{STT_FUNC, "Function"},
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{STT_SECTION, "Section"},
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{STT_FILE, "File"},
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{STT_COMMON, "Common"},
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{STT_GNU_IFUNC, "Indirect function/dispatcher"}
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};
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// Relocation type names x86 32 bit
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SIntTxt ELF32RelocationNames[] = {
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{R_386_NONE, "None"},
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{R_386_32, "Absolute 32 bit"},
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{R_386_PC32, "Self-relative 32 bit"},
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{R_386_GOT32, "32 bit GOT entry"},
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{R_386_PLT32, "32 bit PLT address"},
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{R_386_COPY, "Copy symbol at runtime"},
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{R_386_GLOB_DAT, "Create GOT entry"},
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{R_386_JMP_SLOT, "Create PLT entry"},
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{R_386_RELATIVE, "Adjust by image base"},
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{R_386_GOTOFF, "32 bit offset to GOT"},
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{R_386_GOTPC, "32 bit PC relative offset to GOT"},
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{R_386_IRELATIVE, "32 bit ref. to indirect function PLT"}
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};
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// Relocation type names x86 64 bit
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SIntTxt ELF64RelocationNames[] = {
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{R_X86_64_NONE, "None"},
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{R_X86_64_64, "Direct 64 bit"},
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{R_X86_64_PC32, "Self relative 32 bit signed"},
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{R_X86_64_GOT32, "32 bit GOT entry"},
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{R_X86_64_PLT32, "32 bit PLT address"},
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{R_X86_64_COPY, "Copy symbol at runtime"},
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{R_X86_64_GLOB_DAT, "Create GOT entry"},
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{R_X86_64_JUMP_SLOT, "Create PLT entry"},
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{R_X86_64_RELATIVE, "Adjust by program base"},
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{R_X86_64_GOTPCREL, "32 bit signed pc relative offset to GOT"},
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{R_X86_64_32, "Direct 32 bit zero extended"},
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{R_X86_64_32S, "Direct 32 bit sign extended"},
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{R_X86_64_16, "Direct 16 bit zero extended"},
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{R_X86_64_PC16, "16 bit sign extended pc relative"},
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{R_X86_64_8, "Direct 8 bit sign extended"},
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{R_X86_64_PC8, "8 bit sign extended pc relative"},
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{R_X86_64_IRELATIVE, "32 bit ref. to indirect function PLT"}
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};
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// Machine names
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SIntTxt ELFMachineNames[] = {
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{EM_NONE, "None"}, // No machine
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{EM_M32, "AT&T WE 32100"},
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{EM_SPARC, "SPARC"},
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{EM_386, "Intel x86"},
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{EM_68K, "Motorola m68k"},
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{EM_88K, "Motorola m88k"},
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{EM_860, "MIPS R3000 big-endian"},
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{EM_MIPS, "MIPS R3000 big-endian"},
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{EM_S370, "IBM System/370"},
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{EM_MIPS_RS3_LE, "NMIPS R3000 little-endianone"},
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{EM_PARISC, "HPPA"},
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{EM_VPP500, "Fujitsu VPP500"},
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{EM_SPARC32PLUS, "Sun v8plus"},
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{EM_960, "Intel 80960"},
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{EM_PPC, "PowerPC"},
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{EM_PPC64, "PowerPC 64-bit"},
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{EM_S390, "IBM S390"},
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{EM_V800, "NEC V800"},
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{EM_FR20, "Fujitsu FR20"},
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{EM_RH32, "TRW RH-32"},
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{EM_RCE, "Motorola RCE"},
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{EM_ARM, "ARM"},
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{EM_FAKE_ALPHA, "Digital Alpha"},
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{EM_SH, "Hitachi SH"},
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{EM_SPARCV9, "SPARC v9 64-bit"},
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{EM_TRICORE, "Siemens Tricore"},
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{EM_ARC, "Argonaut RISC"},
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{EM_H8_300, "Hitachi H8/300"},
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{EM_H8_300H, "Hitachi H8/300H"},
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{EM_H8S, "Hitachi H8S"},
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{EM_H8_500, "EM_H8_500"},
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{EM_IA_64, "Intel IA64"},
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{EM_MIPS_X, "Stanford MIPS-X"},
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{EM_COLDFIRE, "Motorola Coldfire"},
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{EM_68HC12, "Motorola M68HC12"},
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{EM_MMA, "Fujitsu MMA"},
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{EM_PCP, "Siemens PCP"},
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{EM_NCPU, "Sony nCPU"},
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{EM_NDR1, "Denso NDR1"},
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{EM_STARCORE, "Motorola Start*Core"},
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{EM_ME16, "Toyota ME16"},
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{EM_ST100, "ST100"},
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{EM_TINYJ, "Tinyj"},
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{EM_X86_64, "x86-64"},
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{EM_PDSP, "Sony DSP"},
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{EM_FX66, "Siemens FX66"},
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{EM_ST9PLUS, "ST9+ 8/16"},
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{EM_ST7, "ST7 8"},
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{EM_68HC16, "MC68HC16"},
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{EM_68HC11, "MC68HC11"},
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{EM_68HC08, "MC68HC08"},
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{EM_68HC05, "MC68HC05"},
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{EM_SVX, "SVx"},
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{EM_AT19, "ST19"},
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{EM_VAX, "VAX"},
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{EM_CRIS, "Axis"},
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{EM_JAVELIN, "Infineon"},
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{EM_FIREPATH, "Element 14"},
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{EM_ZSP, "LSI Logic"},
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{EM_HUANY, "Harvard"},
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{EM_PRISM, "SiTera Prism"},
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{EM_AVR, "Atmel AVR"},
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{EM_FR30, "FR30"},
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{EM_D10V, "D10V"},
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{EM_D30V, "D30V"},
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{EM_V850, "NEC v850"},
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{EM_M32R, "M32R"},
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{EM_MN10300, "MN10300"},
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{EM_MN10200, "MN10200"},
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{EM_PJ, "picoJava"},
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{EM_ALPHA, "Alpha"}
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};
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// Program header type names
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SIntTxt ELFPTypeNames[] = {
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{PT_NULL, "Unused"},
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{PT_LOAD, "Loadable program segment"},
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{PT_DYNAMIC, "Dynamic linking information"},
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{PT_INTERP, "Program interpreter"},
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{PT_NOTE, "Auxiliary information"},
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{PT_SHLIB, "Reserved"},
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{PT_PHDR, "Entry for header table itself"}
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};
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// Class CELF members:
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// Constructor
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template <class TELF_Header, class TELF_SectionHeader, class TELF_Symbol, class TELF_Relocation>
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CELF<ELFSTRUCTURES>::CELF() {
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memset(this, 0, sizeof(*this));
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}
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// ParseFile
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template <class TELF_Header, class TELF_SectionHeader, class TELF_Symbol, class TELF_Relocation>
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void CELF<ELFSTRUCTURES>::ParseFile(){
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// Load and parse file buffer
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uint32 i;
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FileHeader = *(TELF_Header*)Buf(); // Copy file header
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NSections = FileHeader.e_shnum;
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SectionHeaders.SetNum(NSections); // Allocate space for section headers
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SectionHeaders.SetZero();
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uint32 Symtabi = 0; // Index to symbol table
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// check header integrity
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if (FileHeader.e_phoff > GetDataSize() || FileHeader.e_phoff + FileHeader.e_phentsize > GetDataSize()) err.submit(2035);
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if (FileHeader.e_shoff > GetDataSize() || FileHeader.e_shoff + FileHeader.e_shentsize > GetDataSize()) err.submit(2035);
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// Find section headers
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SectionHeaderSize = FileHeader.e_shentsize;
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if (SectionHeaderSize <= 0) err.submit(2033);
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uint32 SectionOffset = uint32(FileHeader.e_shoff);
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for (i = 0; i < NSections; i++) {
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SectionHeaders[i] = Get<TELF_SectionHeader>(SectionOffset);
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// check section header integrity
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if (SectionHeaders[i].sh_type != SHT_NOBITS && (SectionHeaders[i].sh_offset > GetDataSize()
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|| SectionHeaders[i].sh_offset + SectionHeaders[i].sh_size > GetDataSize()
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|| SectionHeaders[i].sh_offset + SectionHeaders[i].sh_entsize > GetDataSize())) {
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err.submit(2035);
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}
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SectionOffset += SectionHeaderSize;
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if (SectionHeaders[i].sh_type == SHT_SYMTAB) {
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// Symbol table found
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Symtabi = i;
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}
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}
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// if (Buf() && GetNumEntries()) {
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if (Buf() && GetDataSize()) {
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SecStringTable = Buf() + uint32(SectionHeaders[FileHeader.e_shstrndx].sh_offset);
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SecStringTableLen = uint32(SectionHeaders[FileHeader.e_shstrndx].sh_size);
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}
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if (SectionOffset > GetDataSize()) {
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err.submit(2110); // Section table points to outside file
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}
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if (Symtabi) {
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// Save offset to symbol table
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SymbolTableOffset = (uint32)(SectionHeaders[Symtabi].sh_offset);
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SymbolTableEntrySize = (uint32)(SectionHeaders[Symtabi].sh_entsize); // Entry size of symbol table
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if (SymbolTableEntrySize == 0) {err.submit(2034); return;} // Avoid division by zero
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SymbolTableEntries = uint32(SectionHeaders[Symtabi].sh_size) / SymbolTableEntrySize;
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// Find associated string table
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uint32 Stringtabi = SectionHeaders[Symtabi].sh_link;
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if (Stringtabi < NSections) {
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SymbolStringTableOffset = (uint32)(SectionHeaders[Stringtabi].sh_offset);
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SymbolStringTableSize = (uint32)(SectionHeaders[Stringtabi].sh_size);
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}
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else {
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Symtabi = 0; // Error
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}
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}
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}
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// Dump
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template <class TELF_Header, class TELF_SectionHeader, class TELF_Symbol, class TELF_Relocation>
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void CELF<ELFSTRUCTURES>::Dump(int options) {
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uint32 i;
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if (options & DUMP_FILEHDR) {
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// File header
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printf("\nDump of ELF file %s", FileName);
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printf("\n-----------------------------------------------");
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printf("\nFile size: %i", GetDataSize());
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printf("\nFile header:");
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printf("\nFile class: %s, Data encoding: %s, ELF version %i, ABI: %s, ABI version %i",
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Lookup(ELFFileClassNames, FileHeader.e_ident[EI_CLASS]),
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Lookup(ELFDataEncodeNames, FileHeader.e_ident[EI_DATA]),
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FileHeader.e_ident[EI_VERSION],
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Lookup(ELFABINames, FileHeader.e_ident[EI_OSABI]),
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FileHeader.e_ident[EI_ABIVERSION]);
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printf("\nFile type: %s, Machine: %s, version: %i",
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Lookup(ELFFileTypeNames, FileHeader.e_type),
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Lookup(ELFMachineNames, FileHeader.e_machine),
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FileHeader.e_version);
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printf("\nNumber of sections: %2i, Processor flags: 0x%X",
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NSections, FileHeader.e_flags);
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}
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if ((options & DUMP_SECTHDR) && FileHeader.e_phnum) {
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// Dump program headers
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uint32 nProgramHeaders = FileHeader.e_phnum;
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uint32 programHeaderSize = FileHeader.e_phentsize;
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if (programHeaderSize <= 0) err.submit(2033);
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uint32 programHeaderOffset = (uint32)FileHeader.e_phoff;
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Elf64_Phdr pHeader;
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for (i = 0; i < nProgramHeaders; i++) {
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if (WordSize == 32) {
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|
|
Elf32_Phdr pHeader32 = Get<Elf32_Phdr>(programHeaderOffset);
|
||
|
|
pHeader.p_type = pHeader32.p_type;
|
||
|
|
pHeader.p_offset = pHeader32.p_offset;
|
||
|
|
pHeader.p_vaddr = pHeader32.p_vaddr;
|
||
|
|
pHeader.p_paddr = pHeader32.p_paddr;
|
||
|
|
pHeader.p_filesz = pHeader32.p_filesz;
|
||
|
|
pHeader.p_memsz = pHeader32.p_memsz;
|
||
|
|
pHeader.p_flags = pHeader32.p_flags;
|
||
|
|
pHeader.p_align = pHeader32.p_align;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
pHeader = Get<Elf64_Phdr>(programHeaderOffset);
|
||
|
|
}
|
||
|
|
printf("\nProgram header Type: %s, flags 0x%X",
|
||
|
|
Lookup(ELFPTypeNames, (uint32)pHeader.p_type), (uint32)pHeader.p_flags);
|
||
|
|
printf("\noffset = 0x%X, vaddr = 0x%X, paddr = 0x%X, filesize = 0x%X, memsize = 0x%X, align = 0x%X",
|
||
|
|
(uint32)pHeader.p_offset, (uint32)pHeader.p_vaddr, (uint32)pHeader.p_paddr, (uint32)pHeader.p_filesz, (uint32)pHeader.p_memsz, (uint32)pHeader.p_align);
|
||
|
|
programHeaderOffset += programHeaderSize;
|
||
|
|
if (pHeader.p_filesz < 0x100 && (int32)pHeader.p_offset < GetDataSize() && memchr(Buf()+pHeader.p_offset, 0, (uint32)pHeader.p_filesz)) {
|
||
|
|
printf("\nContents: %s", Buf()+(int32)pHeader.p_offset);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (options & DUMP_SECTHDR) {
|
||
|
|
// Dump section headers
|
||
|
|
printf("\n\nSection headers:");
|
||
|
|
for (uint32 sc = 0; sc < NSections; sc++) {
|
||
|
|
// Get copy of 32-bit header or converted 64-bit header
|
||
|
|
TELF_SectionHeader sheader = SectionHeaders[sc];
|
||
|
|
uint32 entrysize = (uint32)(sheader.sh_entsize);
|
||
|
|
uint32 namei = sheader.sh_name;
|
||
|
|
if (namei >= SecStringTableLen) {err.submit(2112); break;}
|
||
|
|
printf("\n%2i Name: %-18s Type: %s", sc, SecStringTable + namei,
|
||
|
|
Lookup(ELFSectionTypeNames, sheader.sh_type));
|
||
|
|
if (sheader.sh_flags) {
|
||
|
|
printf("\n Flags: 0x%X:", uint32(sheader.sh_flags));
|
||
|
|
for (int fi = 1; fi < (1 << 30); fi <<= 1) {
|
||
|
|
if (uint32(sheader.sh_flags) & fi) {
|
||
|
|
printf(" %s", Lookup(ELFSectionFlagNames,fi));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (sheader.sh_addr) {
|
||
|
|
printf("\n Address: 0x%X", uint32(sheader.sh_addr));
|
||
|
|
}
|
||
|
|
if (sheader.sh_offset || sheader.sh_size) {
|
||
|
|
printf("\n FileOffset: 0x%X, Size: 0x%X",
|
||
|
|
uint32(sheader.sh_offset), uint32(sheader.sh_size));
|
||
|
|
}
|
||
|
|
if (sheader.sh_addralign) {
|
||
|
|
printf("\n Alignment: 0x%X", uint32(sheader.sh_addralign));
|
||
|
|
}
|
||
|
|
if (sheader.sh_entsize) {
|
||
|
|
printf("\n Entry size: 0x%X", uint32(sheader.sh_entsize));
|
||
|
|
switch (sheader.sh_type) {
|
||
|
|
case SHT_DYNAMIC:
|
||
|
|
printf("\n String table: %i", sheader.sh_link);
|
||
|
|
break;
|
||
|
|
case SHT_HASH:
|
||
|
|
printf("\n Symbol table: %i", sheader.sh_link);
|
||
|
|
break;
|
||
|
|
case SHT_REL: case SHT_RELA:
|
||
|
|
printf("\n Symbol table: %i, Reloc. section: %i",
|
||
|
|
sheader.sh_link, sheader.sh_info);
|
||
|
|
break;
|
||
|
|
case SHT_SYMTAB: case SHT_DYNSYM:
|
||
|
|
printf("\n Symbol string table: %i, First global symbol: %i",
|
||
|
|
sheader.sh_link, sheader.sh_info);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
if (sheader.sh_link) {
|
||
|
|
printf("\n Link: %i", sheader.sh_link);
|
||
|
|
}
|
||
|
|
if (sheader.sh_info) {
|
||
|
|
printf("\n Info: %i", sheader.sh_info);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (sheader.sh_type == SHT_STRTAB && (options & DUMP_STRINGTB)) {
|
||
|
|
// Print string table
|
||
|
|
printf("\n String table:");
|
||
|
|
char * p = Buf() + uint32(sheader.sh_offset) + 1;
|
||
|
|
uint32 nread = 1, len;
|
||
|
|
while (nread < uint32(sheader.sh_size)) {
|
||
|
|
len = (uint32)strlen(p);
|
||
|
|
printf(" >>%s<<", p);
|
||
|
|
nread += len + 1;
|
||
|
|
p += len + 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ((sheader.sh_type==SHT_SYMTAB || sheader.sh_type==SHT_DYNSYM) && (options & DUMP_SYMTAB)) {
|
||
|
|
// Dump symbol table
|
||
|
|
|
||
|
|
// Find associated string table
|
||
|
|
if (sheader.sh_link >= (uint32)NSections) {err.submit(2035); sheader.sh_link = 0;}
|
||
|
|
int8 * strtab = Buf() + uint32(SectionHeaders[sheader.sh_link].sh_offset);
|
||
|
|
|
||
|
|
// Find symbol table
|
||
|
|
uint32 symtabsize = (uint32)(sheader.sh_size);
|
||
|
|
int8 * symtab = Buf() + uint32(sheader.sh_offset);
|
||
|
|
int8 * symtabend = symtab + symtabsize;
|
||
|
|
if (entrysize < sizeof(TELF_Symbol)) {err.submit(2033); entrysize = sizeof(TELF_Symbol);}
|
||
|
|
|
||
|
|
printf("\n Symbols:");
|
||
|
|
// Loop through symbol table
|
||
|
|
int symi; // Symbol number
|
||
|
|
for (symi = 0; symtab < symtabend; symtab += entrysize, symi++) {
|
||
|
|
// Copy 32 bit symbol table entry or convert 64 bit entry
|
||
|
|
TELF_Symbol sym = *(TELF_Symbol*)symtab;
|
||
|
|
int type = sym.st_type;
|
||
|
|
int binding = sym.st_bind;
|
||
|
|
if (*(strtab + sym.st_name)) {
|
||
|
|
printf("\n %2i Name: %s,", symi, strtab + sym.st_name);}
|
||
|
|
else {
|
||
|
|
printf("\n %2i Unnamed,", symi);}
|
||
|
|
if (sym.st_value || type == STT_OBJECT || type == STT_FUNC || type == STT_GNU_IFUNC || int16(sym.st_shndx) < 0)
|
||
|
|
printf(" Value: 0x%X", uint32(sym.st_value));
|
||
|
|
if (sym.st_size) printf(" Size: %i", uint32(sym.st_size));
|
||
|
|
if (sym.st_other) printf(" Other: 0x%X", sym.st_other);
|
||
|
|
if (int16(sym.st_shndx) >= 0) printf(" Section: %i", sym.st_shndx);
|
||
|
|
else { // Special segment values
|
||
|
|
switch (int16(sym.st_shndx)) {
|
||
|
|
case SHN_ABS:
|
||
|
|
printf(" Absolute,"); break;
|
||
|
|
case SHN_COMMON:
|
||
|
|
printf(" Common,"); break;
|
||
|
|
case SHN_XINDEX:
|
||
|
|
printf(" Index in extra table,"); break;
|
||
|
|
default:
|
||
|
|
printf(" Section: 0x%X", sym.st_shndx);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (sym.st_type || sym.st_bind) {
|
||
|
|
printf(" Type: %s, Binding: %s",
|
||
|
|
Lookup(ELFSymbolTypeNames, type),
|
||
|
|
Lookup(ELFSymbolBindingNames, binding));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ((sheader.sh_type==SHT_REL || sheader.sh_type==SHT_RELA ) && (options & DUMP_RELTAB)) {
|
||
|
|
printf("\n Relocations:");
|
||
|
|
int8 * reltab = Buf() + uint32(sheader.sh_offset);
|
||
|
|
int8 * reltabend = reltab + uint32(sheader.sh_size);
|
||
|
|
uint32 expectedentrysize = sheader.sh_type == SHT_RELA ?
|
||
|
|
sizeof(TELF_Relocation) : // Elf32_Rela, Elf64_Rela
|
||
|
|
sizeof(TELF_Relocation) - WordSize/8; // Elf32_Rel, Elf64_Rel
|
||
|
|
if (entrysize < expectedentrysize) {err.submit(2033); entrysize = expectedentrysize;}
|
||
|
|
|
||
|
|
// Loop through entries
|
||
|
|
for (; reltab < reltabend; reltab += entrysize) {
|
||
|
|
// Copy relocation table entry with or without addend
|
||
|
|
TELF_Relocation rel; rel.r_addend = 0;
|
||
|
|
memcpy(&rel, reltab, entrysize);
|
||
|
|
printf ("\n Offset: 0x%X, Symbol: %i, Name: %s\n Type: %s",
|
||
|
|
uint32(rel.r_offset), rel.r_sym, SymbolName(rel.r_sym),
|
||
|
|
(WordSize == 32) ?
|
||
|
|
Lookup (ELF32RelocationNames, rel.r_type) :
|
||
|
|
Lookup (ELF64RelocationNames, rel.r_type));
|
||
|
|
if (rel.r_addend) printf (", Addend: 0x%X", uint32(rel.r_addend));
|
||
|
|
|
||
|
|
// Find inline addend
|
||
|
|
TELF_SectionHeader relsheader = SectionHeaders[sheader.sh_info];
|
||
|
|
uint32 relsoffset = uint32(relsheader.sh_offset);
|
||
|
|
if (relsoffset+rel.r_offset < GetDataSize()) {
|
||
|
|
int32 * piaddend = (int32*)(Buf()+relsoffset+rel.r_offset);
|
||
|
|
if (* piaddend) printf (", Inline addend: 0x%X", * piaddend);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// PublicNames
|
||
|
|
template <class TELF_Header, class TELF_SectionHeader, class TELF_Symbol, class TELF_Relocation>
|
||
|
|
void CELF<ELFSTRUCTURES>::PublicNames(CMemoryBuffer * Strings, CSList<SStringEntry> * Index, int m) {
|
||
|
|
// Make list of public names
|
||
|
|
// Interpret header:
|
||
|
|
ParseFile();
|
||
|
|
|
||
|
|
// Loop through section headers
|
||
|
|
for (uint32 sc = 0; sc < NSections; sc++) {
|
||
|
|
// Get copy of 32-bit header or converted 64-bit header
|
||
|
|
TELF_SectionHeader sheader = SectionHeaders[sc];
|
||
|
|
uint32 entrysize = uint32(sheader.sh_entsize);
|
||
|
|
|
||
|
|
if (sheader.sh_type==SHT_SYMTAB || sheader.sh_type==SHT_DYNSYM) {
|
||
|
|
// Dump symbol table
|
||
|
|
|
||
|
|
// Find associated string table
|
||
|
|
if (sheader.sh_link >= (uint32)NSections) {err.submit(2035); sheader.sh_link = 0;}
|
||
|
|
int8 * strtab = Buf() + uint32(SectionHeaders[sheader.sh_link].sh_offset);
|
||
|
|
|
||
|
|
// Find symbol table
|
||
|
|
uint32 symtabsize = uint32(sheader.sh_size);
|
||
|
|
int8 * symtab = Buf() + uint32(sheader.sh_offset);
|
||
|
|
int8 * symtabend = symtab + symtabsize;
|
||
|
|
if (entrysize < sizeof(TELF_Symbol)) {err.submit(2033); entrysize = sizeof(TELF_Symbol);}
|
||
|
|
|
||
|
|
// Loop through symbol table
|
||
|
|
for (int symi = 0; symtab < symtabend; symtab += entrysize, symi++) {
|
||
|
|
// Copy 32 bit symbol table entry or convert 64 bit entry
|
||
|
|
TELF_Symbol sym = *(TELF_Symbol*)symtab;
|
||
|
|
int type = sym.st_type;
|
||
|
|
int binding = sym.st_bind;
|
||
|
|
if (int16(sym.st_shndx) > 0
|
||
|
|
&& type != STT_SECTION && type != STT_FILE
|
||
|
|
&& (binding == STB_GLOBAL || binding == STB_WEAK)) {
|
||
|
|
// Public symbol found
|
||
|
|
SStringEntry se;
|
||
|
|
se.Member = m;
|
||
|
|
// Store name
|
||
|
|
se.String = Strings->PushString(strtab + sym.st_name);
|
||
|
|
// Store name index
|
||
|
|
Index->Push(se);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// SymbolName
|
||
|
|
template <class TELF_Header, class TELF_SectionHeader, class TELF_Symbol, class TELF_Relocation>
|
||
|
|
const char * CELF<ELFSTRUCTURES>::SymbolName(uint32 index) {
|
||
|
|
// Get name of symbol. (ParseFile() must be called first)
|
||
|
|
const char * symname = "?"; // Symbol name
|
||
|
|
uint32 symi; // Symbol index
|
||
|
|
uint32 stri; // String index
|
||
|
|
if (SymbolTableOffset) {
|
||
|
|
symi = SymbolTableOffset + index * SymbolTableEntrySize;
|
||
|
|
if (symi < GetDataSize()) {
|
||
|
|
stri = Get<TELF_Symbol>(symi).st_name;
|
||
|
|
if (stri < SymbolStringTableSize) {
|
||
|
|
symname = Buf() + SymbolStringTableOffset + stri;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return symname;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// Make template instances for 32 and 64 bits
|
||
|
|
template class CELF<ELF32STRUCTURES>;
|
||
|
|
template class CELF<ELF64STRUCTURES>;
|