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https://github.com/RGBCube/serenity
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Kernel: Move ELF-related files into Kernel/ELF/.
This commit is contained in:
Andreas Kling
parent
9fca94269e
commit
072ea7eece
7 changed files with 5 additions and 5 deletions
213
Kernel/ELF/ELFImage.cpp
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213
Kernel/ELF/ELFImage.cpp
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#include "ELFImage.h"
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#include <AK/kstdio.h>
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ELFImage::ELFImage(const byte* buffer)
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: m_buffer(buffer)
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{
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m_valid = parse();
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}
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ELFImage::~ELFImage()
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{
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}
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static const char* object_file_type_to_string(Elf32_Half type)
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{
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switch (type) {
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case ET_NONE: return "None";
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case ET_REL: return "Relocatable";
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case ET_EXEC: return "Executable";
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case ET_DYN: return "Shared object";
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case ET_CORE: return "Core";
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default: return "(?)";
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}
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}
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const char* ELFImage::section_index_to_string(unsigned index)
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{
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if (index == SHN_UNDEF)
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return "Undefined";
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if (index >= SHN_LORESERVE)
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return "Reserved";
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return section(index).name();
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}
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unsigned ELFImage::symbol_count() const
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{
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return section(m_symbol_table_section_index).entry_count();
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}
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void ELFImage::dump()
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{
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kprintf("ELFImage{%p} {\n", this);
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kprintf(" is_valid: %u\n", is_valid());
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if (!is_valid()) {
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kprintf("}\n");
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return;
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}
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kprintf(" type: %s\n", object_file_type_to_string(header().e_type));
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kprintf(" machine: %u\n", header().e_machine);
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kprintf(" entry: %x\n", header().e_entry);
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kprintf(" shoff: %u\n", header().e_shoff);
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kprintf(" shnum: %u\n", header().e_shnum);
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kprintf(" shstrndx: %u\n", header().e_shstrndx);
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for (unsigned i = 0; i < header().e_shnum; ++i) {
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auto& section = this->section(i);
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kprintf(" Section %u: {\n", i);
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kprintf(" name: %s\n", section.name());
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kprintf(" type: %x\n", section.type());
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kprintf(" offset: %x\n", section.offset());
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kprintf(" size: %u\n", section.size());
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kprintf(" \n");
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kprintf(" }\n");
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}
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kprintf("Symbol count: %u (table is %u)\n", symbol_count(), m_symbol_table_section_index);
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for (unsigned i = 1; i < symbol_count(); ++i) {
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auto& sym = symbol(i);
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kprintf("Symbol @%u:\n", i);
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kprintf(" Name: %s\n", sym.name());
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kprintf(" In section: %s\n", section_index_to_string(sym.section_index()));
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kprintf(" Value: %x\n", sym.value());
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kprintf(" Size: %u\n", sym.size());
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}
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kprintf("}\n");
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}
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unsigned ELFImage::section_count() const
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{
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return header().e_shnum;
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}
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unsigned ELFImage::program_header_count() const
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{
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return header().e_phnum;
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}
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bool ELFImage::parse()
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{
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// We only support i386.
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if (header().e_machine != 3) {
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kprintf("ELFImage::parse(): e_machine=%u not supported!\n");
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return false;
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}
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// First locate the string tables.
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for (unsigned i = 0; i < section_count(); ++i) {
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auto& sh = section_header(i);
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if (sh.sh_type == SHT_SYMTAB) {
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ASSERT(!m_symbol_table_section_index);
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m_symbol_table_section_index = i;
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}
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if (sh.sh_type == SHT_STRTAB && i != header().e_shstrndx) {
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ASSERT(!m_string_table_section_index);
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m_string_table_section_index = i;
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}
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}
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#ifdef SUPPORT_RELOCATIONS
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// Then create a name-to-index map.
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for (unsigned i = 0; i < section_count(); ++i) {
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auto& section = this->section(i);
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m_sections.set(section.name(), move(i));
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}
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#endif
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return true;
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}
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const char* ELFImage::section_header_table_string(unsigned offset) const
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{
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auto& sh = section_header(header().e_shstrndx);
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if (sh.sh_type != SHT_STRTAB)
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return nullptr;
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return raw_data(sh.sh_offset + offset);
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}
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const char* ELFImage::table_string(unsigned offset) const
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{
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auto& sh = section_header(m_string_table_section_index);
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if (sh.sh_type != SHT_STRTAB)
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return nullptr;
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return raw_data(sh.sh_offset + offset);
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}
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const char* ELFImage::raw_data(unsigned offset) const
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{
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return reinterpret_cast<const char*>(m_buffer) + offset;
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}
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const Elf32_Ehdr& ELFImage::header() const
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{
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return *reinterpret_cast<const Elf32_Ehdr*>(raw_data(0));
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}
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const Elf32_Phdr& ELFImage::program_header_internal(unsigned index) const
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{
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ASSERT(index < header().e_phnum);
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return *reinterpret_cast<const Elf32_Phdr*>(raw_data(header().e_phoff + (index * sizeof(Elf32_Phdr))));
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}
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const Elf32_Shdr& ELFImage::section_header(unsigned index) const
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{
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ASSERT(index < header().e_shnum);
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return *reinterpret_cast<const Elf32_Shdr*>(raw_data(header().e_shoff + (index * sizeof(Elf32_Shdr))));
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}
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const ELFImage::Symbol ELFImage::symbol(unsigned index) const
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{
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ASSERT(index < symbol_count());
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auto* raw_syms = reinterpret_cast<const Elf32_Sym*>(raw_data(section(m_symbol_table_section_index).offset()));
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return Symbol(*this, index, raw_syms[index]);
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}
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const ELFImage::Section ELFImage::section(unsigned index) const
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{
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ASSERT(index < section_count());
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return Section(*this, index);
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}
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const ELFImage::ProgramHeader ELFImage::program_header(unsigned index) const
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{
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ASSERT(index < program_header_count());
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return ProgramHeader(*this, index);
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}
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#ifdef SUPPORT_RELOCATIONS
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const ELFImage::Relocation ELFImage::RelocationSection::relocation(unsigned index) const
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{
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ASSERT(index < relocation_count());
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auto* rels = reinterpret_cast<const Elf32_Rel*>(m_image.raw_data(offset()));
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return Relocation(m_image, rels[index]);
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}
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const ELFImage::RelocationSection ELFImage::Section::relocations() const
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{
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// FIXME: This is ugly.
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char relocation_sectionName[128];
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ksprintf(relocation_sectionName, ".rel%s", name());
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#ifdef ELFIMAGE_DEBUG
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kprintf("looking for '%s'\n", relocation_sectionName);
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#endif
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auto relocation_section = m_image.lookup_section(relocation_sectionName);
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if (relocation_section.type() != SHT_REL)
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return static_cast<const RelocationSection>(m_image.section(0));
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#ifdef ELFIMAGE_DEBUG
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kprintf("Found relocations for %s in %s\n", name(), relocation_section.name());
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#endif
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return static_cast<const RelocationSection>(relocation_section);
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}
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const ELFImage::Section ELFImage::lookup_section(const char* name) const
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{
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if (auto it = m_sections.find(name); it != m_sections.end())
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return section((*it).value);
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return section(0);
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}
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#endif
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226
Kernel/ELF/ELFImage.h
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226
Kernel/ELF/ELFImage.h
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#pragma once
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#include <AK/OwnPtr.h>
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#include <AK/HashMap.h>
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#include <AK/AKString.h>
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#include <Kernel/ELF/exec_elf.h>
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#include <Kernel/types.h>
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class ELFImage {
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public:
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explicit ELFImage(const byte*);
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~ELFImage();
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void dump();
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bool is_valid() const { return m_valid; }
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bool parse();
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class Section;
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class RelocationSection;
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class Symbol;
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class Relocation;
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class Symbol {
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public:
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Symbol(const ELFImage& image, unsigned index, const Elf32_Sym& sym)
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: m_image(image)
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, m_sym(sym)
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, m_index(index)
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{
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}
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~Symbol() { }
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const char* name() const { return m_image.table_string(m_sym.st_name); }
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unsigned section_index() const { return m_sym.st_shndx; }
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unsigned value() const { return m_sym.st_value; }
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unsigned size() const { return m_sym.st_size; }
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unsigned index() const { return m_index; }
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unsigned type() const { return ELF32_ST_TYPE(m_sym.st_info); }
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const Section section() const { return m_image.section(section_index()); }
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private:
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const ELFImage& m_image;
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const Elf32_Sym& m_sym;
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const unsigned m_index;
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};
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class ProgramHeader {
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public:
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ProgramHeader(const ELFImage& image, unsigned program_header_index)
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: m_image(image)
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, m_program_header(image.program_header_internal(program_header_index))
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, m_program_header_index(program_header_index)
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{
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}
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~ProgramHeader() { }
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unsigned index() const { return m_program_header_index; }
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dword type() const { return m_program_header.p_type; }
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dword flags() const { return m_program_header.p_flags; }
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dword offset() const { return m_program_header.p_offset; }
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LinearAddress laddr() const { return LinearAddress(m_program_header.p_vaddr); }
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dword size_in_memory() const { return m_program_header.p_memsz; }
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dword size_in_image() const { return m_program_header.p_filesz; }
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dword alignment() const { return m_program_header.p_align; }
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bool is_readable() const { return flags() & PF_R; }
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bool is_writable() const { return flags() & PF_W; }
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bool is_executable() const { return flags() & PF_X; }
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const char* raw_data() const { return m_image.raw_data(m_program_header.p_offset); }
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private:
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const ELFImage& m_image;
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const Elf32_Phdr& m_program_header;
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unsigned m_program_header_index { 0 };
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};
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class Section {
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public:
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Section(const ELFImage& image, unsigned sectionIndex)
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: m_image(image)
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, m_section_header(image.section_header(sectionIndex))
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, m_section_index(sectionIndex)
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{
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}
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~Section() { }
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const char* name() const { return m_image.section_header_table_string(m_section_header.sh_name); }
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unsigned type() const { return m_section_header.sh_type; }
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unsigned offset() const { return m_section_header.sh_offset; }
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unsigned size() const { return m_section_header.sh_size; }
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unsigned entry_size() const { return m_section_header.sh_entsize; }
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unsigned entry_count() const { return size() / entry_size(); }
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dword address() const { return m_section_header.sh_addr; }
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const char* raw_data() const { return m_image.raw_data(m_section_header.sh_offset); }
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bool is_undefined() const { return m_section_index == SHN_UNDEF; }
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#ifdef SUPPORT_RELOCATIONS
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const RelocationSection relocations() const;
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#endif
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dword flags() const { return m_section_header.sh_flags; }
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bool is_writable() const { return flags() & SHF_WRITE; }
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bool is_executable() const { return flags() & PF_X; }
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protected:
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friend class RelocationSection;
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const ELFImage& m_image;
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const Elf32_Shdr& m_section_header;
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unsigned m_section_index;
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};
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#ifdef SUPPORT_RELOCATIONS
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class RelocationSection : public Section {
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public:
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RelocationSection(const Section& section)
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: Section(section.m_image, section.m_section_index)
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{
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}
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unsigned relocation_count() const { return entry_count(); }
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const Relocation relocation(unsigned index) const;
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template<typename F> void for_each_relocation(F) const;
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};
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class Relocation {
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public:
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Relocation(const ELFImage& image, const Elf32_Rel& rel)
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: m_image(image)
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, m_rel(rel)
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{
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}
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~Relocation() { }
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unsigned offset() const { return m_rel.r_offset; }
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unsigned type() const { return ELF32_R_TYPE(m_rel.r_info); }
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unsigned symbol_index() const { return ELF32_R_SYM(m_rel.r_info); }
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const Symbol symbol() const { return m_image.symbol(symbol_index()); }
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private:
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const ELFImage& m_image;
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const Elf32_Rel& m_rel;
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};
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#endif
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unsigned symbol_count() const;
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unsigned section_count() const;
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unsigned program_header_count() const;
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const Symbol symbol(unsigned) const;
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const Section section(unsigned) const;
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const ProgramHeader program_header(unsigned const) const;
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template<typename F> void for_each_section(F) const;
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template<typename F> void for_each_section_of_type(unsigned, F) const;
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template<typename F> void for_each_symbol(F) const;
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template<typename F> void for_each_program_header(F) const;
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// NOTE: Returns section(0) if section with name is not found.
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// FIXME: I don't love this API.
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const Section lookup_section(const char* name) const;
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bool is_executable() const { return header().e_type == ET_EXEC; }
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bool is_relocatable() const { return header().e_type == ET_REL; }
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LinearAddress entry() const { return LinearAddress(header().e_entry); }
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private:
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bool parse_header();
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const char* raw_data(unsigned offset) const;
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const Elf32_Ehdr& header() const;
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const Elf32_Shdr& section_header(unsigned) const;
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const Elf32_Phdr& program_header_internal(unsigned) const;
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const char* table_string(unsigned offset) const;
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const char* section_header_table_string(unsigned offset) const;
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const char* section_index_to_string(unsigned index);
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const byte* m_buffer { nullptr };
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#ifdef SUPPORT_RELOCATIONS
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HashMap<String, unsigned> m_sections;
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#endif
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bool m_valid { false };
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unsigned m_symbol_table_section_index { 0 };
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unsigned m_string_table_section_index { 0 };
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};
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template<typename F>
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inline void ELFImage::for_each_section(F func) const
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{
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for (unsigned i = 0; i < section_count(); ++i)
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func(section(i));
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}
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template<typename F>
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inline void ELFImage::for_each_section_of_type(unsigned type, F func) const
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{
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for (unsigned i = 0; i < section_count(); ++i) {
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auto& section = this->section(i);
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if (section.type() == type) {
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if (!func(section))
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break;
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}
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}
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}
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#ifdef SUPPORT_RELOCATIONS
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template<typename F>
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inline void ELFImage::RelocationSection::for_each_relocation(F func) const
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{
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for (unsigned i = 0; i < relocation_count(); ++i) {
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if (!func(relocation(i)))
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break;
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}
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}
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#endif
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template<typename F>
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inline void ELFImage::for_each_symbol(F func) const
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{
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for (unsigned i = 0; i < symbol_count(); ++i) {
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if (!func(symbol(i)))
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break;
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}
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}
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template<typename F>
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inline void ELFImage::for_each_program_header(F func) const
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{
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for (unsigned i = 0; i < program_header_count(); ++i)
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func(program_header(i));
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}
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176
Kernel/ELF/ELFLoader.cpp
Normal file
176
Kernel/ELF/ELFLoader.cpp
Normal file
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@ -0,0 +1,176 @@
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#include "ELFLoader.h"
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#include <AK/kstdio.h>
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//#define ELFLOADER_DEBUG
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//#define SUPPORT_RELOCATIONS
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ELFLoader::ELFLoader(const byte* buffer)
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: m_image(buffer)
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{
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}
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ELFLoader::~ELFLoader()
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{
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}
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bool ELFLoader::load()
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{
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#ifdef ELFLOADER_DEBUG
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m_image.dump();
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#endif
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if (!m_image.is_valid())
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return false;
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if (!layout())
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return false;
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#ifdef SUPPORT_RELOCATIONS
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if (!perform_relocations())
|
||||
return false;
|
||||
#endif
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool ELFLoader::layout()
|
||||
{
|
||||
#ifdef ELFLOADER_DEBUG
|
||||
kprintf("ELFLoader: Layout\n");
|
||||
#endif
|
||||
|
||||
bool failed = false;
|
||||
m_image.for_each_program_header([&] (const ELFImage::ProgramHeader& program_header) {
|
||||
if (program_header.type() != PT_LOAD)
|
||||
return;
|
||||
#ifdef ELFLOADER_DEBUG
|
||||
kprintf("PH: L%x %u r:%u w:%u\n", program_header.laddr().get(), program_header.size_in_memory(), program_header.is_readable(), program_header.is_writable());
|
||||
#endif
|
||||
if (program_header.is_writable()) {
|
||||
allocate_section(program_header.laddr(), program_header.size_in_memory(), program_header.alignment(), program_header.is_readable(), program_header.is_writable());
|
||||
memcpy(program_header.laddr().as_ptr(), program_header.raw_data(), program_header.size_in_image());
|
||||
} else {
|
||||
map_section(program_header.laddr(), program_header.size_in_memory(), program_header.alignment(), program_header.offset(), program_header.is_readable(), program_header.is_writable());
|
||||
}
|
||||
});
|
||||
return !failed;
|
||||
}
|
||||
|
||||
#ifdef SUPPORT_RELOCATIONS
|
||||
void* ELFLoader::lookup(const ELFImage::Symbol& symbol)
|
||||
{
|
||||
if (symbol.section().is_undefined())
|
||||
return symbol_ptr(symbol.name());
|
||||
return area_for_section(symbol.section()) + symbol.value();
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SUPPORT_RELOCATIONS
|
||||
char* ELFLoader::area_for_section(const ELFImage::Section& section)
|
||||
{
|
||||
return area_for_section_name(section.name());
|
||||
}
|
||||
|
||||
char* ELFLoader::area_for_section_name(const char* name)
|
||||
{
|
||||
if (auto it = m_sections.find(name); it != m_sections.end())
|
||||
return (*it).value;
|
||||
ASSERT_NOT_REACHED();
|
||||
return nullptr;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SUPPORT_RELOCATIONS
|
||||
bool ELFLoader::perform_relocations()
|
||||
{
|
||||
#ifdef ELFLOADER_DEBUG
|
||||
kprintf("ELFLoader: Performing relocations\n");
|
||||
#endif
|
||||
|
||||
bool failed = false;
|
||||
|
||||
m_image.for_each_section_of_type(SHT_PROGBITS, [this, &failed] (const ELFImage::Section& section) -> bool {
|
||||
auto& relocations = section.relocations();
|
||||
if (relocations.is_undefined())
|
||||
return true;
|
||||
relocations.for_each_relocation([this, section, &failed] (const ELFImage::Relocation& relocation) {
|
||||
auto symbol = relocation.symbol();
|
||||
auto& patch_ptr = *reinterpret_cast<ptrdiff_t*>(area_for_section(section) + relocation.offset());
|
||||
|
||||
switch (relocation.type()) {
|
||||
case R_386_PC32: {
|
||||
char* target_ptr = (char*)lookup(symbol);
|
||||
if (!target_ptr) {
|
||||
kprintf("ELFLoader: unresolved symbol '%s'\n", symbol.name());
|
||||
failed = true;
|
||||
return false;
|
||||
}
|
||||
ptrdiff_t relative_offset = (char*)target_ptr - ((char*)&patch_ptr + 4);
|
||||
#ifdef ELFLOADER_DEBUG
|
||||
kprintf("ELFLoader: Relocate PC32: offset=%x, symbol=%u(%s) value=%x target=%p, offset=%d\n",
|
||||
relocation.offset(),
|
||||
symbol.index(),
|
||||
symbol.name(),
|
||||
symbol.value(),
|
||||
target_ptr,
|
||||
relative_offset
|
||||
);
|
||||
#endif
|
||||
patch_ptr = relative_offset;
|
||||
break;
|
||||
}
|
||||
case R_386_32: {
|
||||
#ifdef ELFLOADER_DEBUG
|
||||
kprintf("ELFLoader: Relocate Abs32: symbol=%u(%s), value=%x, section=%s\n",
|
||||
symbol.index(),
|
||||
symbol.name(),
|
||||
symbol.value(),
|
||||
symbol.section().name()
|
||||
);
|
||||
#endif
|
||||
char* target_ptr = area_for_section(symbol.section()) + symbol.value();
|
||||
patch_ptr += (ptrdiff_t)target_ptr;
|
||||
break;
|
||||
}
|
||||
default:
|
||||
ASSERT_NOT_REACHED();
|
||||
break;
|
||||
}
|
||||
return true;
|
||||
});
|
||||
return !failed;
|
||||
});
|
||||
return !failed;
|
||||
}
|
||||
#endif
|
||||
|
||||
char* ELFLoader::symbol_ptr(const char* name)
|
||||
{
|
||||
char* found_ptr = nullptr;
|
||||
m_image.for_each_symbol([&] (const ELFImage::Symbol symbol) {
|
||||
if (symbol.type() != STT_FUNC)
|
||||
return true;
|
||||
if (strcmp(symbol.name(), name))
|
||||
return true;
|
||||
if (m_image.is_executable())
|
||||
found_ptr = (char*)symbol.value();
|
||||
#ifdef SUPPORT_RELOCATIONS
|
||||
else if (m_image.is_relocatable())
|
||||
found_ptr = area_for_section(symbol.section()) + symbol.value();
|
||||
#endif
|
||||
else
|
||||
ASSERT_NOT_REACHED();
|
||||
return false;
|
||||
});
|
||||
return found_ptr;
|
||||
}
|
||||
|
||||
bool ELFLoader::allocate_section(LinearAddress laddr, size_t size, size_t alignment, bool is_readable, bool is_writable)
|
||||
{
|
||||
ASSERT(alloc_section_hook);
|
||||
return alloc_section_hook(laddr, size, alignment, is_readable, is_writable, String::format("elf-alloc-%s%s", is_readable ? "r" : "", is_writable ? "w" : ""));
|
||||
}
|
||||
|
||||
bool ELFLoader::map_section(LinearAddress laddr, size_t size, size_t alignment, size_t offset_in_image, bool is_readable, bool is_writable)
|
||||
{
|
||||
ASSERT(alloc_section_hook);
|
||||
return map_section_hook(laddr, size, alignment, offset_in_image, is_readable, is_writable, String::format("elf-map-%s%s", is_readable ? "r" : "", is_writable ? "w" : ""));
|
||||
}
|
||||
44
Kernel/ELF/ELFLoader.h
Normal file
44
Kernel/ELF/ELFLoader.h
Normal file
|
|
@ -0,0 +1,44 @@
|
|||
#pragma once
|
||||
|
||||
#include <AK/Function.h>
|
||||
#include <AK/HashMap.h>
|
||||
#include <AK/OwnPtr.h>
|
||||
#include <AK/Vector.h>
|
||||
#include "ELFImage.h"
|
||||
|
||||
class ELFLoader {
|
||||
public:
|
||||
explicit ELFLoader(const byte*);
|
||||
~ELFLoader();
|
||||
|
||||
bool load();
|
||||
Function<void*(LinearAddress, size_t, size_t, bool, bool, const String&)> alloc_section_hook;
|
||||
Function<void*(LinearAddress, size_t, size_t, size_t, bool, bool, const String&)> map_section_hook;
|
||||
char* symbol_ptr(const char* name);
|
||||
bool allocate_section(LinearAddress, size_t, size_t alignment, bool is_readable, bool is_writable);
|
||||
bool map_section(LinearAddress, size_t, size_t alignment, size_t offset_in_image, bool is_readable, bool is_writable);
|
||||
LinearAddress entry() const { return m_image.entry(); }
|
||||
|
||||
private:
|
||||
bool layout();
|
||||
bool perform_relocations();
|
||||
void* lookup(const ELFImage::Symbol&);
|
||||
char* area_for_section(const ELFImage::Section&);
|
||||
char* area_for_section_name(const char*);
|
||||
|
||||
struct PtrAndSize {
|
||||
PtrAndSize() { }
|
||||
PtrAndSize(char* p, unsigned s)
|
||||
: ptr(p)
|
||||
, size(s)
|
||||
{
|
||||
}
|
||||
|
||||
char* ptr { nullptr };
|
||||
unsigned size { 0 };
|
||||
};
|
||||
ELFImage m_image;
|
||||
|
||||
HashMap<String, char*> m_sections;
|
||||
};
|
||||
|
||||
782
Kernel/ELF/exec_elf.h
Normal file
782
Kernel/ELF/exec_elf.h
Normal file
|
|
@ -0,0 +1,782 @@
|
|||
/* $OpenBSD: exec_elf.h,v 1.83 2019/01/22 23:23:18 jsg Exp $ */
|
||||
/*
|
||||
* Copyright (c) 1995, 1996 Erik Theisen. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
/*
|
||||
* This is the ELF ABI header file
|
||||
* formerly known as "elf_abi.h".
|
||||
*/
|
||||
|
||||
#ifndef _SYS_EXEC_ELF_H_
|
||||
#define _SYS_EXEC_ELF_H_
|
||||
|
||||
#include <AK/Types.h>
|
||||
|
||||
typedef uint8_t Elf_Byte;
|
||||
|
||||
typedef uint32_t Elf32_Addr; /* Unsigned program address */
|
||||
typedef uint32_t Elf32_Off; /* Unsigned file offset */
|
||||
typedef int32_t Elf32_Sword; /* Signed large integer */
|
||||
typedef uint32_t Elf32_Word; /* Unsigned large integer */
|
||||
typedef uint16_t Elf32_Half; /* Unsigned medium integer */
|
||||
typedef uint64_t Elf32_Lword;
|
||||
|
||||
typedef uint64_t Elf64_Addr;
|
||||
typedef uint64_t Elf64_Off;
|
||||
typedef int32_t Elf64_Shalf;
|
||||
|
||||
#ifdef __alpha__
|
||||
typedef int64_t Elf64_Sword;
|
||||
typedef uint64_t Elf64_Word;
|
||||
#else
|
||||
typedef int32_t Elf64_Sword;
|
||||
typedef uint32_t Elf64_Word;
|
||||
#endif
|
||||
|
||||
typedef int64_t Elf64_Sxword;
|
||||
typedef uint64_t Elf64_Xword;
|
||||
typedef uint64_t Elf64_Lword;
|
||||
|
||||
typedef uint32_t Elf64_Half;
|
||||
typedef uint16_t Elf64_Quarter;
|
||||
|
||||
/*
|
||||
* e_ident[] identification indexes
|
||||
* See http://www.sco.com/developers/gabi/latest/ch4.eheader.html
|
||||
*/
|
||||
#define EI_MAG0 0 /* file ID */
|
||||
#define EI_MAG1 1 /* file ID */
|
||||
#define EI_MAG2 2 /* file ID */
|
||||
#define EI_MAG3 3 /* file ID */
|
||||
#define EI_CLASS 4 /* file class */
|
||||
#define EI_DATA 5 /* data encoding */
|
||||
#define EI_VERSION 6 /* ELF header version */
|
||||
#define EI_OSABI 7 /* OS/ABI ID */
|
||||
#define EI_ABIVERSION 8 /* ABI version */
|
||||
#define EI_PAD 9 /* start of pad bytes */
|
||||
#define EI_NIDENT 16 /* Size of e_ident[] */
|
||||
|
||||
/* e_ident[] magic number */
|
||||
#define ELFMAG0 0x7f /* e_ident[EI_MAG0] */
|
||||
#define ELFMAG1 'E' /* e_ident[EI_MAG1] */
|
||||
#define ELFMAG2 'L' /* e_ident[EI_MAG2] */
|
||||
#define ELFMAG3 'F' /* e_ident[EI_MAG3] */
|
||||
#define ELFMAG "\177ELF" /* magic */
|
||||
#define SELFMAG 4 /* size of magic */
|
||||
|
||||
/* e_ident[] file class */
|
||||
#define ELFCLASSNONE 0 /* invalid */
|
||||
#define ELFCLASS32 1 /* 32-bit objs */
|
||||
#define ELFCLASS64 2 /* 64-bit objs */
|
||||
#define ELFCLASSNUM 3 /* number of classes */
|
||||
|
||||
/* e_ident[] data encoding */
|
||||
#define ELFDATANONE 0 /* invalid */
|
||||
#define ELFDATA2LSB 1 /* Little-Endian */
|
||||
#define ELFDATA2MSB 2 /* Big-Endian */
|
||||
#define ELFDATANUM 3 /* number of data encode defines */
|
||||
|
||||
/* e_ident[] Operating System/ABI */
|
||||
#define ELFOSABI_SYSV 0 /* UNIX System V ABI */
|
||||
#define ELFOSABI_HPUX 1 /* HP-UX operating system */
|
||||
#define ELFOSABI_NETBSD 2 /* NetBSD */
|
||||
#define ELFOSABI_LINUX 3 /* GNU/Linux */
|
||||
#define ELFOSABI_HURD 4 /* GNU/Hurd */
|
||||
#define ELFOSABI_86OPEN 5 /* 86Open common IA32 ABI */
|
||||
#define ELFOSABI_SOLARIS 6 /* Solaris */
|
||||
#define ELFOSABI_MONTEREY 7 /* Monterey */
|
||||
#define ELFOSABI_IRIX 8 /* IRIX */
|
||||
#define ELFOSABI_FREEBSD 9 /* FreeBSD */
|
||||
#define ELFOSABI_TRU64 10 /* TRU64 UNIX */
|
||||
#define ELFOSABI_MODESTO 11 /* Novell Modesto */
|
||||
#define ELFOSABI_OPENBSD 12 /* OpenBSD */
|
||||
#define ELFOSABI_ARM 97 /* ARM */
|
||||
#define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */
|
||||
|
||||
/* e_ident */
|
||||
#define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \
|
||||
(ehdr).e_ident[EI_MAG1] == ELFMAG1 && \
|
||||
(ehdr).e_ident[EI_MAG2] == ELFMAG2 && \
|
||||
(ehdr).e_ident[EI_MAG3] == ELFMAG3)
|
||||
|
||||
/* ELF Header */
|
||||
typedef struct elfhdr {
|
||||
unsigned char e_ident[EI_NIDENT]; /* ELF Identification */
|
||||
Elf32_Half e_type; /* object file type */
|
||||
Elf32_Half e_machine; /* machine */
|
||||
Elf32_Word e_version; /* object file version */
|
||||
Elf32_Addr e_entry; /* virtual entry point */
|
||||
Elf32_Off e_phoff; /* program header table offset */
|
||||
Elf32_Off e_shoff; /* section header table offset */
|
||||
Elf32_Word e_flags; /* processor-specific flags */
|
||||
Elf32_Half e_ehsize; /* ELF header size */
|
||||
Elf32_Half e_phentsize; /* program header entry size */
|
||||
Elf32_Half e_phnum; /* number of program header entries */
|
||||
Elf32_Half e_shentsize; /* section header entry size */
|
||||
Elf32_Half e_shnum; /* number of section header entries */
|
||||
Elf32_Half e_shstrndx; /* section header table's "section
|
||||
header string table" entry offset */
|
||||
} Elf32_Ehdr;
|
||||
|
||||
typedef struct {
|
||||
unsigned char e_ident[EI_NIDENT]; /* Id bytes */
|
||||
Elf64_Quarter e_type; /* file type */
|
||||
Elf64_Quarter e_machine; /* machine type */
|
||||
Elf64_Half e_version; /* version number */
|
||||
Elf64_Addr e_entry; /* entry point */
|
||||
Elf64_Off e_phoff; /* Program hdr offset */
|
||||
Elf64_Off e_shoff; /* Section hdr offset */
|
||||
Elf64_Half e_flags; /* Processor flags */
|
||||
Elf64_Quarter e_ehsize; /* sizeof ehdr */
|
||||
Elf64_Quarter e_phentsize; /* Program header entry size */
|
||||
Elf64_Quarter e_phnum; /* Number of program headers */
|
||||
Elf64_Quarter e_shentsize; /* Section header entry size */
|
||||
Elf64_Quarter e_shnum; /* Number of section headers */
|
||||
Elf64_Quarter e_shstrndx; /* String table index */
|
||||
} Elf64_Ehdr;
|
||||
|
||||
/* e_type */
|
||||
#define ET_NONE 0 /* No file type */
|
||||
#define ET_REL 1 /* relocatable file */
|
||||
#define ET_EXEC 2 /* executable file */
|
||||
#define ET_DYN 3 /* shared object file */
|
||||
#define ET_CORE 4 /* core file */
|
||||
#define ET_NUM 5 /* number of types */
|
||||
#define ET_LOPROC 0xff00 /* reserved range for processor */
|
||||
#define ET_HIPROC 0xffff /* specific e_type */
|
||||
|
||||
/* e_machine */
|
||||
#define EM_NONE 0 /* No Machine */
|
||||
#define EM_M32 1 /* AT&T WE 32100 */
|
||||
#define EM_SPARC 2 /* SPARC */
|
||||
#define EM_386 3 /* Intel 80386 */
|
||||
#define EM_68K 4 /* Motorola 68000 */
|
||||
#define EM_88K 5 /* Motorola 88000 */
|
||||
#define EM_486 6 /* Intel 80486 - unused? */
|
||||
#define EM_860 7 /* Intel 80860 */
|
||||
#define EM_MIPS 8 /* MIPS R3000 Big-Endian only */
|
||||
/*
|
||||
* Don't know if EM_MIPS_RS4_BE,
|
||||
* EM_SPARC64, EM_PARISC,
|
||||
* or EM_PPC are ABI compliant
|
||||
*/
|
||||
#define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */
|
||||
#define EM_SPARC64 11 /* SPARC v9 64-bit unofficial */
|
||||
#define EM_PARISC 15 /* HPPA */
|
||||
#define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */
|
||||
#define EM_PPC 20 /* PowerPC */
|
||||
#define EM_PPC64 21 /* PowerPC 64 */
|
||||
#define EM_ARM 40 /* Advanced RISC Machines ARM */
|
||||
#define EM_ALPHA 41 /* DEC ALPHA */
|
||||
#define EM_SH 42 /* Hitachi/Renesas Super-H */
|
||||
#define EM_SPARCV9 43 /* SPARC version 9 */
|
||||
#define EM_IA_64 50 /* Intel IA-64 Processor */
|
||||
#define EM_AMD64 62 /* AMD64 architecture */
|
||||
#define EM_X86_64 EM_AMD64
|
||||
#define EM_VAX 75 /* DEC VAX */
|
||||
#define EM_AARCH64 183 /* ARM 64-bit architecture (AArch64) */
|
||||
|
||||
/* Non-standard */
|
||||
#define EM_ALPHA_EXP 0x9026 /* DEC ALPHA */
|
||||
#define EM__LAST__ (EM_ALPHA_EXP + 1)
|
||||
|
||||
#define EM_NUM 22 /* number of machine types */
|
||||
|
||||
/* Version */
|
||||
#define EV_NONE 0 /* Invalid */
|
||||
#define EV_CURRENT 1 /* Current */
|
||||
#define EV_NUM 2 /* number of versions */
|
||||
|
||||
/* Magic for e_phnum: get real value from sh_info of first section header */
|
||||
#define PN_XNUM 0xffff
|
||||
|
||||
/* Section Header */
|
||||
typedef struct {
|
||||
Elf32_Word sh_name; /* name - index into section header
|
||||
string table section */
|
||||
Elf32_Word sh_type; /* type */
|
||||
Elf32_Word sh_flags; /* flags */
|
||||
Elf32_Addr sh_addr; /* address */
|
||||
Elf32_Off sh_offset; /* file offset */
|
||||
Elf32_Word sh_size; /* section size */
|
||||
Elf32_Word sh_link; /* section header table index link */
|
||||
Elf32_Word sh_info; /* extra information */
|
||||
Elf32_Word sh_addralign; /* address alignment */
|
||||
Elf32_Word sh_entsize; /* section entry size */
|
||||
} Elf32_Shdr;
|
||||
|
||||
typedef struct {
|
||||
Elf64_Half sh_name; /* section name */
|
||||
Elf64_Half sh_type; /* section type */
|
||||
Elf64_Xword sh_flags; /* section flags */
|
||||
Elf64_Addr sh_addr; /* virtual address */
|
||||
Elf64_Off sh_offset; /* file offset */
|
||||
Elf64_Xword sh_size; /* section size */
|
||||
Elf64_Half sh_link; /* link to another */
|
||||
Elf64_Half sh_info; /* misc info */
|
||||
Elf64_Xword sh_addralign; /* memory alignment */
|
||||
Elf64_Xword sh_entsize; /* table entry size */
|
||||
} Elf64_Shdr;
|
||||
|
||||
/* Special Section Indexes */
|
||||
#define SHN_UNDEF 0 /* undefined */
|
||||
#define SHN_LORESERVE 0xff00 /* lower bounds of reserved indexes */
|
||||
#define SHN_LOPROC 0xff00 /* reserved range for processor */
|
||||
#define SHN_HIPROC 0xff1f /* specific section indexes */
|
||||
#define SHN_ABS 0xfff1 /* absolute value */
|
||||
#define SHN_COMMON 0xfff2 /* common symbol */
|
||||
#define SHN_XINDEX 0xffff /* Escape -- index stored elsewhere. */
|
||||
#define SHN_HIRESERVE 0xffff /* upper bounds of reserved indexes */
|
||||
|
||||
/* sh_type */
|
||||
#define SHT_NULL 0 /* inactive */
|
||||
#define SHT_PROGBITS 1 /* program defined information */
|
||||
#define SHT_SYMTAB 2 /* symbol table section */
|
||||
#define SHT_STRTAB 3 /* string table section */
|
||||
#define SHT_RELA 4 /* relocation section with addends*/
|
||||
#define SHT_HASH 5 /* symbol hash table section */
|
||||
#define SHT_DYNAMIC 6 /* dynamic section */
|
||||
#define SHT_NOTE 7 /* note section */
|
||||
#define SHT_NOBITS 8 /* no space section */
|
||||
#define SHT_REL 9 /* relation section without addends */
|
||||
#define SHT_SHLIB 10 /* reserved - purpose unknown */
|
||||
#define SHT_DYNSYM 11 /* dynamic symbol table section */
|
||||
#define SHT_NUM 12 /* number of section types */
|
||||
#define SHT_INIT_ARRAY 14 /* pointers to init functions */
|
||||
#define SHT_FINI_ARRAY 15 /* pointers to termination functions */
|
||||
#define SHT_PREINIT_ARRAY 16 /* ptrs to funcs called before init */
|
||||
#define SHT_GROUP 17 /* defines a section group */
|
||||
#define SHT_SYMTAB_SHNDX 18 /* Section indexes (see SHN_XINDEX). */
|
||||
#define SHT_LOOS 0x60000000 /* reserved range for OS specific */
|
||||
#define SHT_SUNW_dof 0x6ffffff4 /* used by dtrace */
|
||||
#define SHT_GNU_LIBLIST 0x6ffffff7 /* libraries to be prelinked */
|
||||
#define SHT_SUNW_move 0x6ffffffa /* inf for partially init'ed symbols */
|
||||
#define SHT_SUNW_syminfo 0x6ffffffc /* ad symbol information */
|
||||
#define SHT_SUNW_verdef 0x6ffffffd /* symbol versioning inf */
|
||||
#define SHT_SUNW_verneed 0x6ffffffe /* symbol versioning req */
|
||||
#define SHT_SUNW_versym 0x6fffffff /* symbol versioning table */
|
||||
#define SHT_HIOS 0x6fffffff /* section header types */
|
||||
#define SHT_LOPROC 0x70000000 /* reserved range for processor */
|
||||
#define SHT_HIPROC 0x7fffffff /* specific section header types */
|
||||
#define SHT_LOUSER 0x80000000 /* reserved range for application */
|
||||
#define SHT_HIUSER 0xffffffff /* specific indexes */
|
||||
|
||||
#define SHT_GNU_HASH 0x6ffffff6 /* GNU-style hash table section */
|
||||
|
||||
/* Section names */
|
||||
#define ELF_BSS ".bss" /* uninitialized data */
|
||||
#define ELF_DATA ".data" /* initialized data */
|
||||
#define ELF_CTF ".SUNW_ctf" /* CTF data */
|
||||
#define ELF_DEBUG ".debug" /* debug */
|
||||
#define ELF_DYNAMIC ".dynamic" /* dynamic linking information */
|
||||
#define ELF_DYNSTR ".dynstr" /* dynamic string table */
|
||||
#define ELF_DYNSYM ".dynsym" /* dynamic symbol table */
|
||||
#define ELF_FINI ".fini" /* termination code */
|
||||
#define ELF_GOT ".got" /* global offset table */
|
||||
#define ELF_HASH ".hash" /* symbol hash table */
|
||||
#define ELF_INIT ".init" /* initialization code */
|
||||
#define ELF_REL_DATA ".rel.data" /* relocation data */
|
||||
#define ELF_REL_FINI ".rel.fini" /* relocation termination code */
|
||||
#define ELF_REL_INIT ".rel.init" /* relocation initialization code */
|
||||
#define ELF_REL_DYN ".rel.dyn" /* relocation dynamic link info */
|
||||
#define ELF_REL_RODATA ".rel.rodata" /* relocation read-only data */
|
||||
#define ELF_REL_TEXT ".rel.text" /* relocation code */
|
||||
#define ELF_RODATA ".rodata" /* read-only data */
|
||||
#define ELF_SHSTRTAB ".shstrtab" /* section header string table */
|
||||
#define ELF_STRTAB ".strtab" /* string table */
|
||||
#define ELF_SYMTAB ".symtab" /* symbol table */
|
||||
#define ELF_TEXT ".text" /* code */
|
||||
#define ELF_OPENBSDRANDOMDATA ".openbsd.randomdata" /* constant randomdata */
|
||||
|
||||
|
||||
/* Section Attribute Flags - sh_flags */
|
||||
#define SHF_WRITE 0x1 /* Writable */
|
||||
#define SHF_ALLOC 0x2 /* occupies memory */
|
||||
#define SHF_EXECINSTR 0x4 /* executable */
|
||||
#define SHF_MERGE 0x10 /* may be merged */
|
||||
#define SHF_STRINGS 0x20 /* contains strings */
|
||||
#define SHF_INFO_LINK 0x40 /* sh_info holds section index */
|
||||
#define SHF_LINK_ORDER 0x80 /* ordering requirements */
|
||||
#define SHF_OS_NONCONFORMING 0x100 /* OS-specific processing required */
|
||||
#define SHF_GROUP 0x200 /* member of section group */
|
||||
#define SHF_TLS 0x400 /* thread local storage */
|
||||
#define SHF_COMPRESSED 0x800 /* contains compressed data */
|
||||
#define SHF_MASKOS 0x0ff00000 /* OS-specific semantics */
|
||||
#define SHF_MASKPROC 0xf0000000 /* reserved bits for processor */
|
||||
/* specific section attributes */
|
||||
|
||||
/* Symbol Table Entry */
|
||||
typedef struct elf32_sym {
|
||||
Elf32_Word st_name; /* name - index into string table */
|
||||
Elf32_Addr st_value; /* symbol value */
|
||||
Elf32_Word st_size; /* symbol size */
|
||||
unsigned char st_info; /* type and binding */
|
||||
unsigned char st_other; /* 0 - no defined meaning */
|
||||
Elf32_Half st_shndx; /* section header index */
|
||||
} Elf32_Sym;
|
||||
|
||||
typedef struct {
|
||||
Elf64_Half st_name; /* Symbol name index in str table */
|
||||
Elf_Byte st_info; /* type / binding attrs */
|
||||
Elf_Byte st_other; /* unused */
|
||||
Elf64_Quarter st_shndx; /* section index of symbol */
|
||||
Elf64_Xword st_value; /* value of symbol */
|
||||
Elf64_Xword st_size; /* size of symbol */
|
||||
} Elf64_Sym;
|
||||
|
||||
/* Symbol table index */
|
||||
#define STN_UNDEF 0 /* undefined */
|
||||
|
||||
/* Extract symbol info - st_info */
|
||||
#define ELF32_ST_BIND(x) ((x) >> 4)
|
||||
#define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf)
|
||||
#define ELF32_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf))
|
||||
|
||||
#define ELF64_ST_BIND(x) ((x) >> 4)
|
||||
#define ELF64_ST_TYPE(x) (((unsigned int) x) & 0xf)
|
||||
#define ELF64_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf))
|
||||
|
||||
/* Symbol Binding - ELF32_ST_BIND - st_info */
|
||||
#define STB_LOCAL 0 /* Local symbol */
|
||||
#define STB_GLOBAL 1 /* Global symbol */
|
||||
#define STB_WEAK 2 /* like global - lower precedence */
|
||||
#define STB_NUM 3 /* number of symbol bindings */
|
||||
#define STB_LOPROC 13 /* reserved range for processor */
|
||||
#define STB_HIPROC 15 /* specific symbol bindings */
|
||||
|
||||
/* Symbol type - ELF32_ST_TYPE - st_info */
|
||||
#define STT_NOTYPE 0 /* not specified */
|
||||
#define STT_OBJECT 1 /* data object */
|
||||
#define STT_FUNC 2 /* function */
|
||||
#define STT_SECTION 3 /* section */
|
||||
#define STT_FILE 4 /* file */
|
||||
#define STT_TLS 6 /* thread local storage */
|
||||
#define STT_LOPROC 13 /* reserved range for processor */
|
||||
#define STT_HIPROC 15 /* specific symbol types */
|
||||
|
||||
/* Extract symbol visibility - st_other */
|
||||
#define ELF_ST_VISIBILITY(v) ((v) & 0x3)
|
||||
#define ELF32_ST_VISIBILITY ELF_ST_VISIBILITY
|
||||
#define ELF64_ST_VISIBILITY ELF_ST_VISIBILITY
|
||||
|
||||
#define STV_DEFAULT 0 /* Visibility set by binding type */
|
||||
#define STV_INTERNAL 1 /* OS specific version of STV_HIDDEN */
|
||||
#define STV_HIDDEN 2 /* can only be seen inside own .so */
|
||||
#define STV_PROTECTED 3 /* HIDDEN inside, DEFAULT outside */
|
||||
|
||||
/* Relocation entry with implicit addend */
|
||||
typedef struct {
|
||||
Elf32_Addr r_offset; /* offset of relocation */
|
||||
Elf32_Word r_info; /* symbol table index and type */
|
||||
} Elf32_Rel;
|
||||
|
||||
/* Relocation entry with explicit addend */
|
||||
typedef struct {
|
||||
Elf32_Addr r_offset; /* offset of relocation */
|
||||
Elf32_Word r_info; /* symbol table index and type */
|
||||
Elf32_Sword r_addend;
|
||||
} Elf32_Rela;
|
||||
|
||||
/* Extract relocation info - r_info */
|
||||
#define ELF32_R_SYM(i) ((i) >> 8)
|
||||
#define ELF32_R_TYPE(i) ((unsigned char) (i))
|
||||
#define ELF32_R_INFO(s,t) (((s) << 8) + (unsigned char)(t))
|
||||
|
||||
typedef struct {
|
||||
Elf64_Xword r_offset; /* where to do it */
|
||||
Elf64_Xword r_info; /* index & type of relocation */
|
||||
} Elf64_Rel;
|
||||
|
||||
typedef struct {
|
||||
Elf64_Xword r_offset; /* where to do it */
|
||||
Elf64_Xword r_info; /* index & type of relocation */
|
||||
Elf64_Sxword r_addend; /* adjustment value */
|
||||
} Elf64_Rela;
|
||||
|
||||
#define ELF64_R_SYM(info) ((info) >> 32)
|
||||
#define ELF64_R_TYPE(info) ((info) & 0xFFFFFFFF)
|
||||
#define ELF64_R_INFO(s,t) (((s) << 32) + (uint32_t)(t))
|
||||
|
||||
#if defined(__mips64__) && defined(__MIPSEL__)
|
||||
/*
|
||||
* The 64-bit MIPS ELF ABI uses a slightly different relocation format
|
||||
* than the regular ELF ABI: the r_info field is split into several
|
||||
* pieces (see gnu/usr.bin/binutils-2.17/include/elf/mips.h for details).
|
||||
*/
|
||||
#undef ELF64_R_SYM
|
||||
#undef ELF64_R_TYPE
|
||||
#undef ELF64_R_INFO
|
||||
#define ELF64_R_TYPE(info) ((uint64_t)swap32((info) >> 32))
|
||||
#define ELF64_R_SYM(info) ((info) & 0xFFFFFFFF)
|
||||
#define ELF64_R_INFO(s,t) (((uint64_t)swap32(t) << 32) + (uint32_t)(s))
|
||||
#endif /* __mips64__ && __MIPSEL__ */
|
||||
|
||||
/* Program Header */
|
||||
typedef struct {
|
||||
Elf32_Word p_type; /* segment type */
|
||||
Elf32_Off p_offset; /* segment offset */
|
||||
Elf32_Addr p_vaddr; /* virtual address of segment */
|
||||
Elf32_Addr p_paddr; /* physical address - ignored? */
|
||||
Elf32_Word p_filesz; /* number of bytes in file for seg. */
|
||||
Elf32_Word p_memsz; /* number of bytes in mem. for seg. */
|
||||
Elf32_Word p_flags; /* flags */
|
||||
Elf32_Word p_align; /* memory alignment */
|
||||
} Elf32_Phdr;
|
||||
|
||||
typedef struct {
|
||||
Elf64_Half p_type; /* entry type */
|
||||
Elf64_Half p_flags; /* flags */
|
||||
Elf64_Off p_offset; /* offset */
|
||||
Elf64_Addr p_vaddr; /* virtual address */
|
||||
Elf64_Addr p_paddr; /* physical address */
|
||||
Elf64_Xword p_filesz; /* file size */
|
||||
Elf64_Xword p_memsz; /* memory size */
|
||||
Elf64_Xword p_align; /* memory & file alignment */
|
||||
} Elf64_Phdr;
|
||||
|
||||
/* Segment types - p_type */
|
||||
#define PT_NULL 0 /* unused */
|
||||
#define PT_LOAD 1 /* loadable segment */
|
||||
#define PT_DYNAMIC 2 /* dynamic linking section */
|
||||
#define PT_INTERP 3 /* the RTLD */
|
||||
#define PT_NOTE 4 /* auxiliary information */
|
||||
#define PT_SHLIB 5 /* reserved - purpose undefined */
|
||||
#define PT_PHDR 6 /* program header */
|
||||
#define PT_TLS 7 /* thread local storage */
|
||||
#define PT_LOOS 0x60000000 /* reserved range for OS */
|
||||
#define PT_HIOS 0x6fffffff /* specific segment types */
|
||||
#define PT_LOPROC 0x70000000 /* reserved range for processor */
|
||||
#define PT_HIPROC 0x7fffffff /* specific segment types */
|
||||
|
||||
#define PT_GNU_EH_FRAME 0x6474e550 /* Exception handling info */
|
||||
#define PT_GNU_RELRO 0x6474e552 /* Read-only after relocation */
|
||||
|
||||
#define PT_OPENBSD_RANDOMIZE 0x65a3dbe6 /* fill with random data */
|
||||
#define PT_OPENBSD_WXNEEDED 0x65a3dbe7 /* program performs W^X violations */
|
||||
#define PT_OPENBSD_BOOTDATA 0x65a41be6 /* section for boot arguments */
|
||||
|
||||
/* Segment flags - p_flags */
|
||||
#define PF_X 0x1 /* Executable */
|
||||
#define PF_W 0x2 /* Writable */
|
||||
#define PF_R 0x4 /* Readable */
|
||||
#define PF_MASKPROC 0xf0000000 /* reserved bits for processor */
|
||||
/* specific segment flags */
|
||||
|
||||
/* Dynamic structure */
|
||||
typedef struct {
|
||||
Elf32_Sword d_tag; /* controls meaning of d_val */
|
||||
union {
|
||||
Elf32_Word d_val; /* Multiple meanings - see d_tag */
|
||||
Elf32_Addr d_ptr; /* program virtual address */
|
||||
} d_un;
|
||||
} Elf32_Dyn;
|
||||
|
||||
typedef struct {
|
||||
Elf64_Xword d_tag; /* controls meaning of d_val */
|
||||
union {
|
||||
Elf64_Addr d_ptr;
|
||||
Elf64_Xword d_val;
|
||||
} d_un;
|
||||
} Elf64_Dyn;
|
||||
|
||||
/* Dynamic Array Tags - d_tag */
|
||||
#define DT_NULL 0 /* marks end of _DYNAMIC array */
|
||||
#define DT_NEEDED 1 /* string table offset of needed lib */
|
||||
#define DT_PLTRELSZ 2 /* size of relocation entries in PLT */
|
||||
#define DT_PLTGOT 3 /* address PLT/GOT */
|
||||
#define DT_HASH 4 /* address of symbol hash table */
|
||||
#define DT_STRTAB 5 /* address of string table */
|
||||
#define DT_SYMTAB 6 /* address of symbol table */
|
||||
#define DT_RELA 7 /* address of relocation table */
|
||||
#define DT_RELASZ 8 /* size of relocation table */
|
||||
#define DT_RELAENT 9 /* size of relocation entry */
|
||||
#define DT_STRSZ 10 /* size of string table */
|
||||
#define DT_SYMENT 11 /* size of symbol table entry */
|
||||
#define DT_INIT 12 /* address of initialization func. */
|
||||
#define DT_FINI 13 /* address of termination function */
|
||||
#define DT_SONAME 14 /* string table offset of shared obj */
|
||||
#define DT_RPATH 15 /* string table offset of library
|
||||
search path */
|
||||
#define DT_SYMBOLIC 16 /* start sym search in shared obj. */
|
||||
#define DT_REL 17 /* address of rel. tbl. w addends */
|
||||
#define DT_RELSZ 18 /* size of DT_REL relocation table */
|
||||
#define DT_RELENT 19 /* size of DT_REL relocation entry */
|
||||
#define DT_PLTREL 20 /* PLT referenced relocation entry */
|
||||
#define DT_DEBUG 21 /* bugger */
|
||||
#define DT_TEXTREL 22 /* Allow rel. mod. to unwritable seg */
|
||||
#define DT_JMPREL 23 /* add. of PLT's relocation entries */
|
||||
#define DT_BIND_NOW 24 /* Bind now regardless of env setting */
|
||||
#define DT_INIT_ARRAY 25 /* address of array of init func */
|
||||
#define DT_FINI_ARRAY 26 /* address of array of term func */
|
||||
#define DT_INIT_ARRAYSZ 27 /* size of array of init func */
|
||||
#define DT_FINI_ARRAYSZ 28 /* size of array of term func */
|
||||
#define DT_RUNPATH 29 /* strtab offset of lib search path */
|
||||
#define DT_FLAGS 30 /* Set of DF_* flags */
|
||||
#define DT_ENCODING 31 /* further DT_* follow encoding rules */
|
||||
#define DT_PREINIT_ARRAY 32 /* address of array of preinit func */
|
||||
#define DT_PREINIT_ARRAYSZ 33 /* size of array of preinit func */
|
||||
#define DT_LOOS 0x6000000d /* reserved range for OS */
|
||||
#define DT_HIOS 0x6ffff000 /* specific dynamic array tags */
|
||||
#define DT_LOPROC 0x70000000 /* reserved range for processor */
|
||||
#define DT_HIPROC 0x7fffffff /* specific dynamic array tags */
|
||||
|
||||
/* some other useful tags */
|
||||
#define DT_GNU_HASH 0x6ffffef5 /* address of GNU hash table */
|
||||
#define DT_RELACOUNT 0x6ffffff9 /* if present, number of RELATIVE */
|
||||
#define DT_RELCOUNT 0x6ffffffa /* relocs, which must come first */
|
||||
#define DT_FLAGS_1 0x6ffffffb
|
||||
|
||||
/* Dynamic Flags - DT_FLAGS .dynamic entry */
|
||||
#define DF_ORIGIN 0x00000001
|
||||
#define DF_SYMBOLIC 0x00000002
|
||||
#define DF_TEXTREL 0x00000004
|
||||
#define DF_BIND_NOW 0x00000008
|
||||
#define DF_STATIC_TLS 0x00000010
|
||||
|
||||
/* Dynamic Flags - DT_FLAGS_1 .dynamic entry */
|
||||
#define DF_1_NOW 0x00000001
|
||||
#define DF_1_GLOBAL 0x00000002
|
||||
#define DF_1_GROUP 0x00000004
|
||||
#define DF_1_NODELETE 0x00000008
|
||||
#define DF_1_LOADFLTR 0x00000010
|
||||
#define DF_1_INITFIRST 0x00000020
|
||||
#define DF_1_NOOPEN 0x00000040
|
||||
#define DF_1_ORIGIN 0x00000080
|
||||
#define DF_1_DIRECT 0x00000100
|
||||
#define DF_1_TRANS 0x00000200
|
||||
#define DF_1_INTERPOSE 0x00000400
|
||||
#define DF_1_NODEFLIB 0x00000800
|
||||
#define DF_1_NODUMP 0x00001000
|
||||
#define DF_1_CONLFAT 0x00002000
|
||||
|
||||
/*
|
||||
* Note header
|
||||
*/
|
||||
typedef struct {
|
||||
Elf32_Word n_namesz;
|
||||
Elf32_Word n_descsz;
|
||||
Elf32_Word n_type;
|
||||
} Elf32_Nhdr;
|
||||
|
||||
typedef struct {
|
||||
Elf64_Half n_namesz;
|
||||
Elf64_Half n_descsz;
|
||||
Elf64_Half n_type;
|
||||
} Elf64_Nhdr;
|
||||
|
||||
/*
|
||||
* Note Definitions
|
||||
*/
|
||||
typedef struct {
|
||||
Elf32_Word namesz;
|
||||
Elf32_Word descsz;
|
||||
Elf32_Word type;
|
||||
} Elf32_Note;
|
||||
|
||||
typedef struct {
|
||||
Elf64_Half namesz;
|
||||
Elf64_Half descsz;
|
||||
Elf64_Half type;
|
||||
} Elf64_Note;
|
||||
|
||||
/* Values for n_type. */
|
||||
#define NT_PRSTATUS 1 /* Process status. */
|
||||
#define NT_FPREGSET 2 /* Floating point registers. */
|
||||
#define NT_PRPSINFO 3 /* Process state info. */
|
||||
|
||||
/*
|
||||
* OpenBSD-specific core file information.
|
||||
*
|
||||
* OpenBSD ELF core files use notes to provide information about
|
||||
* the process's state. The note name is "OpenBSD" for information
|
||||
* that is global to the process, and "OpenBSD@nn", where "nn" is the
|
||||
* thread ID of the thread that the information belongs to (such as
|
||||
* register state).
|
||||
*
|
||||
* We use the following note identifiers:
|
||||
*
|
||||
* NT_OPENBSD_PROCINFO
|
||||
* Note is a "elfcore_procinfo" structure.
|
||||
* NT_OPENBSD_AUXV
|
||||
* Note is a a bunch of Auxilliary Vectors, terminated by
|
||||
* an AT_NULL entry.
|
||||
* NT_OPENBSD_REGS
|
||||
* Note is a "reg" structure.
|
||||
* NT_OPENBSD_FPREGS
|
||||
* Note is a "fpreg" structure.
|
||||
*
|
||||
* Please try to keep the members of the "elfcore_procinfo" structure
|
||||
* nicely aligned, and if you add elements, add them to the end and
|
||||
* bump the version.
|
||||
*/
|
||||
|
||||
#define NT_OPENBSD_PROCINFO 10
|
||||
#define NT_OPENBSD_AUXV 11
|
||||
|
||||
#define NT_OPENBSD_REGS 20
|
||||
#define NT_OPENBSD_FPREGS 21
|
||||
#define NT_OPENBSD_XFPREGS 22
|
||||
#define NT_OPENBSD_WCOOKIE 23
|
||||
|
||||
struct elfcore_procinfo {
|
||||
/* Version 1 fields start here. */
|
||||
uint32_t cpi_version; /* netbsd_elfcore_procinfo version */
|
||||
#define ELFCORE_PROCINFO_VERSION 1
|
||||
uint32_t cpi_cpisize; /* sizeof(netbsd_elfcore_procinfo) */
|
||||
uint32_t cpi_signo; /* killing signal */
|
||||
uint32_t cpi_sigcode; /* signal code */
|
||||
uint32_t cpi_sigpend; /* pending signals */
|
||||
uint32_t cpi_sigmask; /* blocked signals */
|
||||
uint32_t cpi_sigignore; /* ignored signals */
|
||||
uint32_t cpi_sigcatch; /* signals being caught by user */
|
||||
int32_t cpi_pid; /* process ID */
|
||||
int32_t cpi_ppid; /* parent process ID */
|
||||
int32_t cpi_pgrp; /* process group ID */
|
||||
int32_t cpi_sid; /* session ID */
|
||||
uint32_t cpi_ruid; /* real user ID */
|
||||
uint32_t cpi_euid; /* effective user ID */
|
||||
uint32_t cpi_svuid; /* saved user ID */
|
||||
uint32_t cpi_rgid; /* real group ID */
|
||||
uint32_t cpi_egid; /* effective group ID */
|
||||
uint32_t cpi_svgid; /* saved group ID */
|
||||
int8_t cpi_name[32]; /* copy of pr->ps_comm */
|
||||
};
|
||||
|
||||
/*
|
||||
* XXX - these _KERNEL items aren't part of the ABI!
|
||||
*/
|
||||
#if defined(_KERNEL) || defined(_DYN_LOADER)
|
||||
|
||||
#define ELF32_NO_ADDR ((uint32_t) ~0) /* Indicates addr. not yet filled in */
|
||||
|
||||
typedef struct {
|
||||
Elf32_Sword au_id; /* 32-bit id */
|
||||
Elf32_Word au_v; /* 32-bit value */
|
||||
} Aux32Info;
|
||||
|
||||
#define ELF64_NO_ADDR ((uint64_t) ~0)/* Indicates addr. not yet filled in */
|
||||
|
||||
typedef struct {
|
||||
Elf64_Shalf au_id; /* 32-bit id */
|
||||
Elf64_Xword au_v; /* 64-bit value */
|
||||
} Aux64Info;
|
||||
|
||||
enum AuxID {
|
||||
AUX_null = 0,
|
||||
AUX_ignore = 1,
|
||||
AUX_execfd = 2,
|
||||
AUX_phdr = 3, /* &phdr[0] */
|
||||
AUX_phent = 4, /* sizeof(phdr[0]) */
|
||||
AUX_phnum = 5, /* # phdr entries */
|
||||
AUX_pagesz = 6, /* PAGESIZE */
|
||||
AUX_base = 7, /* ld.so base addr */
|
||||
AUX_flags = 8, /* processor flags */
|
||||
AUX_entry = 9, /* a.out entry */
|
||||
AUX_sun_uid = 2000, /* euid */
|
||||
AUX_sun_ruid = 2001, /* ruid */
|
||||
AUX_sun_gid = 2002, /* egid */
|
||||
AUX_sun_rgid = 2003 /* rgid */
|
||||
};
|
||||
|
||||
struct elf_args {
|
||||
u_long arg_entry; /* program entry point */
|
||||
u_long arg_interp; /* Interpreter load address */
|
||||
u_long arg_phaddr; /* program header address */
|
||||
u_long arg_phentsize; /* Size of program header */
|
||||
u_long arg_phnum; /* Number of program headers */
|
||||
};
|
||||
|
||||
#endif
|
||||
|
||||
#if !defined(ELFSIZE) && defined(ARCH_ELFSIZE)
|
||||
#define ELFSIZE ARCH_ELFSIZE
|
||||
#endif
|
||||
|
||||
#if defined(ELFSIZE)
|
||||
#define CONCAT(x,y) __CONCAT(x,y)
|
||||
#define ELFNAME(x) CONCAT(elf,CONCAT(ELFSIZE,CONCAT(_,x)))
|
||||
#define ELFDEFNNAME(x) CONCAT(ELF,CONCAT(ELFSIZE,CONCAT(_,x)))
|
||||
#endif
|
||||
|
||||
#if defined(ELFSIZE) && (ELFSIZE == 32)
|
||||
#define Elf_Ehdr Elf32_Ehdr
|
||||
#define Elf_Phdr Elf32_Phdr
|
||||
#define Elf_Shdr Elf32_Shdr
|
||||
#define Elf_Sym Elf32_Sym
|
||||
#define Elf_Rel Elf32_Rel
|
||||
#define Elf_RelA Elf32_Rela
|
||||
#define Elf_Dyn Elf32_Dyn
|
||||
#define Elf_Half Elf32_Half
|
||||
#define Elf_Word Elf32_Word
|
||||
#define Elf_Sword Elf32_Sword
|
||||
#define Elf_Addr Elf32_Addr
|
||||
#define Elf_Off Elf32_Off
|
||||
#define Elf_Nhdr Elf32_Nhdr
|
||||
#define Elf_Note Elf32_Note
|
||||
|
||||
#define ELF_R_SYM ELF32_R_SYM
|
||||
#define ELF_R_TYPE ELF32_R_TYPE
|
||||
#define ELF_R_INFO ELF32_R_INFO
|
||||
#define ELFCLASS ELFCLASS32
|
||||
|
||||
#define ELF_ST_BIND ELF32_ST_BIND
|
||||
#define ELF_ST_TYPE ELF32_ST_TYPE
|
||||
#define ELF_ST_INFO ELF32_ST_INFO
|
||||
|
||||
#define ELF_NO_ADDR ELF32_NO_ADDR
|
||||
#define AuxInfo Aux32Info
|
||||
#elif defined(ELFSIZE) && (ELFSIZE == 64)
|
||||
#define Elf_Ehdr Elf64_Ehdr
|
||||
#define Elf_Phdr Elf64_Phdr
|
||||
#define Elf_Shdr Elf64_Shdr
|
||||
#define Elf_Sym Elf64_Sym
|
||||
#define Elf_Rel Elf64_Rel
|
||||
#define Elf_RelA Elf64_Rela
|
||||
#define Elf_Dyn Elf64_Dyn
|
||||
#define Elf_Half Elf64_Half
|
||||
#define Elf_Word Elf64_Word
|
||||
#define Elf_Sword Elf64_Sword
|
||||
#define Elf_Addr Elf64_Addr
|
||||
#define Elf_Off Elf64_Off
|
||||
#define Elf_Nhdr Elf64_Nhdr
|
||||
#define Elf_Note Elf64_Note
|
||||
|
||||
#define ELF_R_SYM ELF64_R_SYM
|
||||
#define ELF_R_TYPE ELF64_R_TYPE
|
||||
#define ELF_R_INFO ELF64_R_INFO
|
||||
#define ELFCLASS ELFCLASS64
|
||||
|
||||
#define ELF_ST_BIND ELF64_ST_BIND
|
||||
#define ELF_ST_TYPE ELF64_ST_TYPE
|
||||
#define ELF_ST_INFO ELF64_ST_INFO
|
||||
|
||||
#define ELF_NO_ADDR ELF64_NO_ADDR
|
||||
#define AuxInfo Aux64Info
|
||||
#endif
|
||||
|
||||
#define ELF_TARG_VER 1 /* The ver for which this code is intended */
|
||||
|
||||
#endif /* _SYS_EXEC_ELF_H_ */
|
||||
Loading…
Add table
Add a link
Reference in a new issue