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LibELF: Move AK/ELF/ into Libraries/LibELF/

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Let's arrange things like this instead. It didn't feel right for all of
the ELF handling code to live in AK.
This commit is contained in:
Andreas Kling 2019-11-06 13:42:38 +01:00
parent 31beff8afb
commit 49635e62fa
9 changed files with 11 additions and 11 deletions
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175
Libraries/LibELF/ELFImage.cpp Normal file
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#include "ELFImage.h"
#include <AK/kstdio.h>
ELFImage::ELFImage(const u8* buffer)
: m_buffer(buffer)
{
m_valid = parse();
}
ELFImage::~ELFImage()
{
}
static const char* object_file_type_to_string(Elf32_Half type)
{
switch (type) {
case ET_NONE:
return "None";
case ET_REL:
return "Relocatable";
case ET_EXEC:
return "Executable";
case ET_DYN:
return "Shared object";
case ET_CORE:
return "Core";
default:
return "(?)";
}
}
const char* ELFImage::section_index_to_string(unsigned index) const
{
if (index == SHN_UNDEF)
return "Undefined";
if (index >= SHN_LORESERVE)
return "Reserved";
return section(index).name();
}
unsigned ELFImage::symbol_count() const
{
return section(m_symbol_table_section_index).entry_count();
}
void ELFImage::dump() const
{
kprintf("ELFImage{%p} {\n", this);
kprintf(" is_valid: %u\n", is_valid());
if (!is_valid()) {
kprintf("}\n");
return;
}
kprintf(" type: %s\n", object_file_type_to_string(header().e_type));
kprintf(" machine: %u\n", header().e_machine);
kprintf(" entry: %x\n", header().e_entry);
kprintf(" shoff: %u\n", header().e_shoff);
kprintf(" shnum: %u\n", header().e_shnum);
kprintf(" shstrndx: %u\n", header().e_shstrndx);
for (unsigned i = 0; i < header().e_shnum; ++i) {
auto& section = this->section(i);
kprintf(" Section %u: {\n", i);
kprintf(" name: %s\n", section.name());
kprintf(" type: %x\n", section.type());
kprintf(" offset: %x\n", section.offset());
kprintf(" size: %u\n", section.size());
kprintf(" \n");
kprintf(" }\n");
}
kprintf("Symbol count: %u (table is %u)\n", symbol_count(), m_symbol_table_section_index);
for (unsigned i = 1; i < symbol_count(); ++i) {
auto& sym = symbol(i);
kprintf("Symbol @%u:\n", i);
kprintf(" Name: %s\n", sym.name());
kprintf(" In section: %s\n", section_index_to_string(sym.section_index()));
kprintf(" Value: %x\n", sym.value());
kprintf(" Size: %u\n", sym.size());
}
kprintf("}\n");
}
unsigned ELFImage::section_count() const
{
return header().e_shnum;
}
unsigned ELFImage::program_header_count() const
{
return header().e_phnum;
}
bool ELFImage::parse()
{
// We only support i386.
if (header().e_machine != 3) {
kprintf("ELFImage::parse(): e_machine=%u not supported!\n", header().e_machine);
return false;
}
// First locate the string tables.
for (unsigned i = 0; i < section_count(); ++i) {
auto& sh = section_header(i);
if (sh.sh_type == SHT_SYMTAB) {
ASSERT(!m_symbol_table_section_index);
m_symbol_table_section_index = i;
}
if (sh.sh_type == SHT_STRTAB && i != header().e_shstrndx) {
ASSERT(!m_string_table_section_index);
m_string_table_section_index = i;
}
}
return true;
}
const char* ELFImage::section_header_table_string(unsigned offset) const
{
auto& sh = section_header(header().e_shstrndx);
if (sh.sh_type != SHT_STRTAB)
return nullptr;
return raw_data(sh.sh_offset + offset);
}
const char* ELFImage::table_string(unsigned offset) const
{
auto& sh = section_header(m_string_table_section_index);
if (sh.sh_type != SHT_STRTAB)
return nullptr;
return raw_data(sh.sh_offset + offset);
}
const char* ELFImage::raw_data(unsigned offset) const
{
return reinterpret_cast<const char*>(m_buffer) + offset;
}
const Elf32_Ehdr& ELFImage::header() const
{
return *reinterpret_cast<const Elf32_Ehdr*>(raw_data(0));
}
const Elf32_Phdr& ELFImage::program_header_internal(unsigned index) const
{
ASSERT(index < header().e_phnum);
return *reinterpret_cast<const Elf32_Phdr*>(raw_data(header().e_phoff + (index * sizeof(Elf32_Phdr))));
}
const Elf32_Shdr& ELFImage::section_header(unsigned index) const
{
ASSERT(index < header().e_shnum);
return *reinterpret_cast<const Elf32_Shdr*>(raw_data(header().e_shoff + (index * sizeof(Elf32_Shdr))));
}
const ELFImage::Symbol ELFImage::symbol(unsigned index) const
{
ASSERT(index < symbol_count());
auto* raw_syms = reinterpret_cast<const Elf32_Sym*>(raw_data(section(m_symbol_table_section_index).offset()));
return Symbol(*this, index, raw_syms[index]);
}
const ELFImage::Section ELFImage::section(unsigned index) const
{
ASSERT(index < section_count());
return Section(*this, index);
}
const ELFImage::ProgramHeader ELFImage::program_header(unsigned index) const
{
ASSERT(index < program_header_count());
return ProgramHeader(*this, index);
}

177
Libraries/LibELF/ELFImage.h Normal file
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#pragma once
#include <AK/String.h>
#include <AK/HashMap.h>
#include <AK/OwnPtr.h>
#include <Kernel/VM/VirtualAddress.h>
#include <LibELF/exec_elf.h>
class ELFImage {
public:
explicit ELFImage(const u8*);
~ELFImage();
void dump() const;
bool is_valid() const { return m_valid; }
bool parse();
class Section;
class RelocationSection;
class Symbol;
class Relocation;
class Symbol {
public:
Symbol(const ELFImage& image, unsigned index, const Elf32_Sym& sym)
: m_image(image)
, m_sym(sym)
, m_index(index)
{
}
~Symbol() {}
const char* name() const { return m_image.table_string(m_sym.st_name); }
unsigned section_index() const { return m_sym.st_shndx; }
unsigned value() const { return m_sym.st_value; }
unsigned size() const { return m_sym.st_size; }
unsigned index() const { return m_index; }
unsigned type() const { return ELF32_ST_TYPE(m_sym.st_info); }
const Section section() const { return m_image.section(section_index()); }
private:
const ELFImage& m_image;
const Elf32_Sym& m_sym;
const unsigned m_index;
};
class ProgramHeader {
public:
ProgramHeader(const ELFImage& image, unsigned program_header_index)
: m_image(image)
, m_program_header(image.program_header_internal(program_header_index))
, m_program_header_index(program_header_index)
{
}
~ProgramHeader() {}
unsigned index() const { return m_program_header_index; }
u32 type() const { return m_program_header.p_type; }
u32 flags() const { return m_program_header.p_flags; }
u32 offset() const { return m_program_header.p_offset; }
VirtualAddress vaddr() const { return VirtualAddress(m_program_header.p_vaddr); }
u32 size_in_memory() const { return m_program_header.p_memsz; }
u32 size_in_image() const { return m_program_header.p_filesz; }
u32 alignment() const { return m_program_header.p_align; }
bool is_readable() const { return flags() & PF_R; }
bool is_writable() const { return flags() & PF_W; }
bool is_executable() const { return flags() & PF_X; }
const char* raw_data() const { return m_image.raw_data(m_program_header.p_offset); }
private:
const ELFImage& m_image;
const Elf32_Phdr& m_program_header;
unsigned m_program_header_index { 0 };
};
class Section {
public:
Section(const ELFImage& image, unsigned sectionIndex)
: m_image(image)
, m_section_header(image.section_header(sectionIndex))
, m_section_index(sectionIndex)
{
}
~Section() {}
const char* name() const { return m_image.section_header_table_string(m_section_header.sh_name); }
unsigned type() const { return m_section_header.sh_type; }
unsigned offset() const { return m_section_header.sh_offset; }
unsigned size() const { return m_section_header.sh_size; }
unsigned entry_size() const { return m_section_header.sh_entsize; }
unsigned entry_count() const { return !entry_size() ? 0 : size() / entry_size(); }
u32 address() const { return m_section_header.sh_addr; }
const char* raw_data() const { return m_image.raw_data(m_section_header.sh_offset); }
bool is_undefined() const { return m_section_index == SHN_UNDEF; }
u32 flags() const { return m_section_header.sh_flags; }
bool is_writable() const { return flags() & SHF_WRITE; }
bool is_executable() const { return flags() & PF_X; }
protected:
friend class RelocationSection;
const ELFImage& m_image;
const Elf32_Shdr& m_section_header;
unsigned m_section_index;
};
unsigned symbol_count() const;
unsigned section_count() const;
unsigned program_header_count() const;
const Symbol symbol(unsigned) const;
const Section section(unsigned) const;
const ProgramHeader program_header(unsigned const) const;
template<typename F>
void for_each_section(F) const;
template<typename F>
void for_each_section_of_type(unsigned, F) const;
template<typename F>
void for_each_symbol(F) const;
template<typename F>
void for_each_program_header(F) const;
bool is_executable() const { return header().e_type == ET_EXEC; }
bool is_relocatable() const { return header().e_type == ET_REL; }
VirtualAddress entry() const { return VirtualAddress(header().e_entry); }
private:
bool parse_header();
const char* raw_data(unsigned offset) const;
const Elf32_Ehdr& header() const;
const Elf32_Shdr& section_header(unsigned) const;
const Elf32_Phdr& program_header_internal(unsigned) const;
const char* table_string(unsigned offset) const;
const char* section_header_table_string(unsigned offset) const;
const char* section_index_to_string(unsigned index) const;
const u8* m_buffer { nullptr };
bool m_valid { false };
unsigned m_symbol_table_section_index { 0 };
unsigned m_string_table_section_index { 0 };
};
template<typename F>
inline void ELFImage::for_each_section(F func) const
{
for (unsigned i = 0; i < section_count(); ++i)
func(section(i));
}
template<typename F>
inline void ELFImage::for_each_section_of_type(unsigned type, F func) const
{
for (unsigned i = 0; i < section_count(); ++i) {
auto& section = this->section(i);
if (section.type() == type) {
if (!func(section))
break;
}
}
}
template<typename F>
inline void ELFImage::for_each_symbol(F func) const
{
for (unsigned i = 0; i < symbol_count(); ++i) {
if (func(symbol(i)) == IterationDecision::Break)
break;
}
}
template<typename F>
inline void ELFImage::for_each_program_header(F func) const
{
for (unsigned i = 0; i < program_header_count(); ++i)
func(program_header(i));
}

145
Libraries/LibELF/ELFLoader.cpp Normal file
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#include "ELFLoader.h"
#include <AK/QuickSort.h>
#include <AK/kstdio.h>
#ifdef KERNEL
#include <Kernel/VM/MemoryManager.h>
#endif
//#define ELFLOADER_DEBUG
ELFLoader::ELFLoader(const u8* buffer)
: m_image(buffer)
{
}
ELFLoader::~ELFLoader()
{
}
bool ELFLoader::load()
{
#ifdef ELFLOADER_DEBUG
m_image.dump();
#endif
if (!m_image.is_valid())
return false;
if (!layout())
return false;
return true;
}
bool ELFLoader::layout()
{
bool failed = false;
m_image.for_each_program_header([&](const ELFImage::ProgramHeader& program_header) {
if (program_header.type() == PT_TLS) {
#ifdef KERNEL
auto* tls_image = tls_section_hook(program_header.size_in_memory(), program_header.alignment());
if (!tls_image) {
failed = true;
return;
}
memcpy(tls_image, program_header.raw_data(), program_header.size_in_image());
#endif
return;
}
if (program_header.type() != PT_LOAD)
return;
#ifdef ELFLOADER_DEBUG
kprintf("PH: V%p %u r:%u w:%u\n", program_header.vaddr().get(), program_header.size_in_memory(), program_header.is_readable(), program_header.is_writable());
#endif
#ifdef KERNEL
if (program_header.is_writable()) {
auto* allocated_section = alloc_section_hook(
program_header.vaddr(),
program_header.size_in_memory(),
program_header.alignment(),
program_header.is_readable(),
program_header.is_writable(),
String::format("elf-alloc-%s%s", program_header.is_readable() ? "r" : "", program_header.is_writable() ? "w" : ""));
if (!allocated_section) {
failed = true;
return;
}
memcpy(program_header.vaddr().as_ptr(), program_header.raw_data(), program_header.size_in_image());
} else {
auto* mapped_section = map_section_hook(
program_header.vaddr(),
program_header.size_in_memory(),
program_header.alignment(),
program_header.offset(),
program_header.is_readable(),
program_header.is_writable(),
program_header.is_executable(),
String::format("elf-map-%s%s%s", program_header.is_readable() ? "r" : "", program_header.is_writable() ? "w" : "", program_header.is_executable() ? "x" : ""));
if (!mapped_section) {
failed = true;
}
}
#endif
});
return !failed;
}
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 IterationDecision::Continue;
if (strcmp(symbol.name(), name))
return IterationDecision::Continue;
if (m_image.is_executable())
found_ptr = (char*)(size_t)symbol.value();
else
ASSERT_NOT_REACHED();
return IterationDecision::Break;
});
return found_ptr;
}
String ELFLoader::symbolicate(u32 address) const
{
SortedSymbol* sorted_symbols = nullptr;
#ifdef KERNEL
if (!m_sorted_symbols_region) {
m_sorted_symbols_region = MM.allocate_kernel_region(PAGE_ROUND_UP(m_image.symbol_count() * sizeof(SortedSymbol)), "Sorted symbols");
sorted_symbols = (SortedSymbol*)m_sorted_symbols_region->vaddr().as_ptr();
size_t index = 0;
m_image.for_each_symbol([&](auto& symbol) {
sorted_symbols[index++] = { symbol.value(), symbol.name() };
return IterationDecision::Continue;
});
quick_sort(sorted_symbols, sorted_symbols + m_image.symbol_count(), [](auto& a, auto& b) {
return a.address < b.address;
});
} else {
sorted_symbols = (SortedSymbol*)m_sorted_symbols_region->vaddr().as_ptr();
}
#else
if (m_sorted_symbols.is_empty()) {
m_sorted_symbols.ensure_capacity(m_image.symbol_count());
m_image.for_each_symbol([this](auto& symbol) {
m_sorted_symbols.append({ symbol.value(), symbol.name() });
return IterationDecision::Continue;
});
quick_sort(m_sorted_symbols.begin(), m_sorted_symbols.end(), [](auto& a, auto& b) {
return a.address < b.address;
});
}
sorted_symbols = m_sorted_symbols.data();
#endif
for (size_t i = 0; i < m_image.symbol_count(); ++i) {
if (sorted_symbols[i].address > address) {
if (i == 0)
return "!!";
auto& symbol = sorted_symbols[i - 1];
return String::format("%s +%u", symbol.name, address - symbol.address);
}
}
return "??";
}

61
Libraries/LibELF/ELFLoader.h Normal file
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#pragma once
#include <AK/Function.h>
#include <AK/HashMap.h>
#include <AK/OwnPtr.h>
#include <AK/Vector.h>
#include <LibELF/ELFImage.h>
#ifdef KERNEL
#include <Kernel/VM/VirtualAddress.h>
class Region;
#endif
class ELFLoader {
public:
explicit ELFLoader(const u8*);
~ELFLoader();
bool load();
#if defined(KERNEL)
Function<void*(VirtualAddress, size_t, size_t, bool, bool, const String&)> alloc_section_hook;
Function<void*(size_t, size_t)> tls_section_hook;
Function<void*(VirtualAddress, size_t, size_t, size_t, bool r, bool w, bool x, const String&)> map_section_hook;
VirtualAddress entry() const { return m_image.entry(); }
#endif
char* symbol_ptr(const char* name);
bool has_symbols() const { return m_image.symbol_count(); }
String symbolicate(u32 address) const;
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;
struct SortedSymbol {
u32 address;
const char* name;
};
#ifdef KERNEL
mutable OwnPtr<Region> m_sorted_symbols_region;
#else
mutable Vector<SortedSymbol> m_sorted_symbols;
#endif
};

778
Libraries/LibELF/exec_elf.h Normal file
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/* $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_ */