简单so加密app案例（一）
前言
在写so的加密和解密之前，我们需要具备的是对so文件（elf文件）的格式解析一定要有足够的熟悉！
elf文件格式解析文章：
ELF探究 之 ELF文件介绍（一） - 简书
[原创] ELF文件格式解析器 原理 + 代码-编程技术-看雪论坛-安全社区|安全招聘|bbs.pediy.com
ELF文件格式解析_mergerly的博客-CSDN博客_elf文件格式详解
https://www.52pojie.cn/forum.php?mod=viewthread&tid=1282554&extra=&highlight=elf&page=1
https://www.52pojie.cn/forum.php?mod=viewthread&tid=591986&extra=&highlight=elf%CE%C4%BC%FE&page=1
除了对于理论的熟悉，我们还要实操下，自己写一个readelf功能的c/c++程序，（当然python，java也可以，你开心就好），以加深对elf格式的理解。
正文
（一）对简单so加密实例一（基于特定section的加解密）的一个详细描述
本篇的简单so加密的参考实例来源于：
[原创]简单粗暴的so加解密实现-Android安全-看雪论坛-安全社区|安全招聘|bbs.pediy.com
基于section的加解密，是指将so文件的特定section进行加密，so文件被加载时解密。
需要编写的一个app，调用一个native方法返回一个字符串供UI显示。在native方法中，又调用getString方法返回一个字符串供native方法返回。我们需要将getString方法加密。这里，将getString方法存放在.mytext中(指定__attribute__((section (".mytext")));)，即我们需要对.mytext进行加密。
加密流程：
1) 从so文件头读取section偏移shoff、shnum和shstrtab
2) 读取shstrtab中的字符串，存放在str空间中
3) 从shoff位置开始读取section header, 存放在shdr
4) 通过shdr -> sh_name 在str字符串中索引，与.mytext进行字符串比较，如果不匹配，继续读取
5) 通过shdr -> sh_offset 和 shdr -> sh_size字段，将.mytext内容读取并保存在content中。
6) 为了便于理解，不使用复杂的加密算法。这里，只将content的所有内容取反，即 *content = ~(*content);
7) 将content内容写回so文件中
8) 为了验证第二节中关于section 字段可以任意修改的结论，这里，将shdr -> addr 写入ELF头e_shoff，将shdr -> sh_size 和 addr 所在内存块写入e_entry中，即ehdr.e_entry = (length << 16) + nsize。当然，这样同时也简化了解密流程，还有一个好处是：如果将so文件头修正放回去，程序是不能运行的。
解密流程：
需要保证解密函数在so加载时被调用，那就需要使用：__attribute__((constructor))。(也可以使用c++构造器实现， 其本质也是用attribute实现)
解密流程：
1) 动态链接器通过call_array调用init_getString
2) Init_getString首先调用getLibAddr方法，得到so文件在内存中的起始地址
3) 读取前52字节，即ELF头。通过e_shoff获得.mytext内存加载地址，ehdr.e_entry获取.mytext大小和所在内存块
4) 修改.mytext所在内存块的读写权限
5) 将[e_shoff, e_shoff + size]内存区域数据解密，即取反操作：*content = ~(*content);
6) 修改回内存区域的读写权限
(这里是对代码段的数据进行解密，需要写权限。如果对数据段的数据解密，是不需要更改权限直接操作的)
（二）编写一个正常so的app
这个so里有解密程序。
我用的是as创建一个native c++工程。
结构目录如下：
CMakeLists.txt代码如下：
cmake_minimum_required(VERSION 3.4.1)
#设置生成的so动态库最后输出的路径
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${PROJECT_SOURCE_DIR}/../jniLibs/${ANDROID_ABI})
add_library(
demo
SHARED
demo.cpp)
find_library(
log-lib
log)
target_link_libraries(
demo
${log-lib})demo.cpp代码如下：
#include
#include
#include
#include
#include
#include
#include
#include
#include "mylog.h"
#define __init_array __attribute__((constructor))
jstring __attribute__((section (".mytext"))) getString(JNIEnv *env) {
LOGI("加载成功111111！！！");
return env->NewStringUTF("Native method return!");
};
unsigned long getLibAddr() {
unsigned long addr = 0;
char name[] = "libdemo.so";
char buf[4096];
int pid;
FILE *fp;
pid = getpid();
sprintf(buf, "/proc/%d/maps", pid);
fp = fopen(buf, "r");
if (fp == NULL) {
LOGI("open %s failed", buf);
goto _error;
}
while (fgets(buf, sizeof(buf), fp)) {
if (strstr(buf, name)) {
char *temp = strtok(buf, "-");
addr = strtoul(temp, NULL, 16);
break;
}
}
_error:
fclose(fp);
return addr;
}
void __init_array init_getString() {
char name[15];
unsigned int nblock;
unsigned int nsize;
unsigned long base;
unsigned long text_addr;
unsigned int i;
Elf32_Ehdr *ehdr;
Elf32_Shdr *shdr;
Elf32_Addr e_entry;
base = getLibAddr();
ehdr = (Elf32_Ehdr *) base;
text_addr = ehdr->e_shoff + base;
e_entry = ehdr->e_entry;
nblock = e_entry >> 16;
nsize = e_entry & 0xffff;
LOGI("base:0x%x nblock:0x%x nsize:0x%x", base, nblock, nsize);
if (e_entry) {
if (mprotect((void *) base, 4096 * nsize, PROT_READ | PROT_EXEC | PROT_WRITE) != 0) {
LOGI("mem privilege change failed");
}
for (i = 0; i < nblock; i++) {
char *addr = (char *) (text_addr + i);
*addr = ~(*addr);
LOGI("addr:%x", *addr);
}
if (mprotect((void *) base, 4096 * nsize, PROT_READ | PROT_EXEC) != 0) {
LOGI("mem privilege change failed");
}
LOGI("Decrypt success");
} else {
LOGI("the so is not encrypted");
}
}
extern "C" JNIEXPORT jstring JNICALL
Java_com_encode_sofile_MainActivity_getString(JNIEnv *env, jobject thiz) {
return getString(env);
}
mylog.h代码如下：
#include
#ifndef MYLOG_H
#define MYLOG_H
/*
* 添加日志打印
*/
#define TAG "testApp" // 这个是自定义的标识
#define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG,TAG ,__VA_ARGS__)
#define LOGI(...) __android_log_print(ANDROID_LOG_INFO,TAG ,__VA_ARGS__)
#define LOGW(...) __android_log_print(ANDROID_LOG_WARN,TAG ,__VA_ARGS__)
#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR,TAG ,__VA_ARGS__)
#define LOGF(...) __android_log_print(ANDROID_LOG_FATAL,TAG ,__VA_ARGS__)
#endif //MYLOG_H
MainActivity.java如下：
package com.encode.sofile;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
static {
System.loadLibrary("demo");
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Example of a call to a native method
TextView tv = findViewById(R.id.sample_text);
tv.setText(getString());
}
public native String getString();
}
build.gradle代码如下：
apply plugin: 'com.android.application'
android {
compileSdkVersion 30
buildToolsVersion "30.0.2"
defaultConfig {
applicationId "com.encode.sofile"
minSdkVersion 21
targetSdkVersion 30
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
externalNativeBuild {
cmake {
cppFlags ""
}
}
ndk {
ldLibs "log" //实现__android_log_print
// 设置支持的so构架
abiFilters 'armeabi-v7a'//, 'arm64-v8a'// , 'x86', 'x86_64'
}
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
externalNativeBuild {
cmake {
path "src/main/cpp/CMakeLists.txt"
version "3.10.2"
}
}
//解决：在增加多个cpp后,编译时出现More than one file was found with OS independent path 'lib/arm64-v8a/libnative-two.so'问题，添加如下代码
packagingOptions {
pickFirst 'lib/armeabi-v7a/libdemo.so'
}
}
dependencies {
implementation fileTree(dir: "libs", include: ["*.jar"])
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}
运行安装，不出意外，日志将打印
com.encode.sofile I/testApp: base:0xf4274000 nblock:0x0 nsize:0x0
com.encode.sofile I/testApp: the so is not encrypted
com.encode.sofile I/testApp: 加载成功111111！！！
并且app正常加载。
我们发现在目录下会自动生成 jniLibs/armeabi-v7a/libdemo.so ，它有152kb。
当我们解压 build/outputs/apk/debug/app-debug.apk，发现它的libdemo.so只有14kb。通过解析elf，发现自动生成的多了一些debug相关的section。所以我用的是解压apk后得到的libdemo.so，毕竟能小就小嘛。
（三）编写加密脚本
我用的是clion创建一个c++工程
encryptSection.cpp代码如下：
#include
#include
#include "elf.h"
#include
int encryptAssignSection(FILE *fp);
int main() {
FILE *fp = fopen("./lib/libdemo.so", "rb+"); // 这个so是解压apk后得到的so
if (fp == NULL) {
printf("打开文件失败");
return 0; //空指针则返回0，文件打开失败
}
encryptAssignSection(fp);
}
int encryptAssignSection(FILE *fp) {
Elf32_Ehdr elfHeader;
Elf32_Shdr shstrtab;
Elf32_Shdr sectionTabElemnt;
char target_section[] = ".mytext"; // 记得修改它！！！！！
int target_section_offset = 0, target_section_size = 0;
fread(&elfHeader, sizeof(Elf32_Ehdr), 1, fp);
printf("e_shoff:0x%x e_shstrndx:0x%x\n", elfHeader.e_shoff, elfHeader.e_shstrndx);
fseek(fp, elfHeader.e_shoff + elfHeader.e_shentsize * elfHeader.e_shstrndx, SEEK_SET);
fread(&shstrtab, elfHeader.e_shentsize, 1, fp);
printf("shstrtab sh_name:0x%x sh_offset:0x%x\n", shstrtab.sh_name, shstrtab.sh_offset);
char *shstrtab_data = (char *) malloc(shstrtab.sh_size);
memset(shstrtab_data, 0, shstrtab.sh_size);
fseek(fp, shstrtab.sh_offset, SEEK_SET);
fread(shstrtab_data, shstrtab.sh_size, 1, fp);
fseek(fp, elfHeader.e_shoff, SEEK_SET);
for (int i = 0; i < elfHeader.e_shnum; ++i) {
fread(§ionTabElemnt, sizeof(Elf32_Shdr), 1, fp);
if (strcmp(shstrtab_data + sectionTabElemnt.sh_name, target_section) == 0) {
target_section_offset = sectionTabElemnt.sh_offset;
target_section_size = sectionTabElemnt.sh_size;
printf("Find target section: %s sh_offset:0x%x sh_size:0x%x\n", target_section, target_section_offset, target_section_size);
break;
}
}
free(shstrtab_data);
fseek(fp, target_section_offset, SEEK_SET);
char *content = (char *) malloc(target_section_size);
memset(content, 0, target_section_size);
fread(content, target_section_size, 1, fp);
printf("原始：");
for (int j = 0; j < target_section_size; j++) {
printf("%x ", content[j] & 0x000000ff);
content[j] = ~content[j];
}
printf("\n现在：");
for (int j = 0; j < target_section_size; j++) {
printf("%x ", content[j] & 0x000000ff);
}
printf("\n");
fseek(fp, target_section_offset, SEEK_SET);
int ws = fwrite(content, 1, target_section_size, fp);
// printf("%d %d\n", ws, target_section_size);
ws == target_section_size ? printf("write section OK\n") : printf("write section Faile\n");
unsigned char block_size = 16;
unsigned short nblock = target_section_size / block_size;
unsigned short nsize = target_section_offset / 4096 + (target_section_offset % 4096 == 0 ? 0 : 1);
printf("nblock：%d, nsize：%d\n", nblock, nsize);
elfHeader.e_entry = (target_section_size << 16) + nsize;
elfHeader.e_shoff = target_section_offset;
fseek(fp, 0, SEEK_SET);
int we = fwrite(&elfHeader, 1, sizeof(Elf32_Ehdr), fp);
we == sizeof(Elf32_Ehdr) ? printf("write elfHeader OK\n") : printf("write elfHeader Faile\n");
(ws == target_section_size && we == sizeof(Elf32_Ehdr)) ? printf("Completed successfully") : printf("Completed failed");
free(content);
fclose(fp);
return 1;
}
elf.h代码如下：
#ifndef ELF_H
#define ELF_H
#include
#include
typedef uint32_t Elf32_Addr; // Program address
typedef uint32_t Elf32_Off; // File offset
typedef uint16_t Elf32_Half;
typedef uint32_t Elf32_Word;
typedef int32_t Elf32_Sword;
typedef uint64_t Elf64_Addr;
typedef uint64_t Elf64_Off;
typedef uint16_t Elf64_Half;
typedef uint32_t Elf64_Word;
typedef int32_t Elf64_Sword;
typedef uint64_t Elf64_Xword;
typedef int64_t Elf64_Sxword;
// Object file magic string.
static constexpr char ElfMagic[] = { 0x7f, 'E', 'L', 'F', '\0' };
// e_ident size and indices.
enum {
EI_MAG0 = 0, // File identification index.
EI_MAG1 = 1, // File identification index.
EI_MAG2 = 2, // File identification index.
EI_MAG3 = 3, // File identification index.
EI_CLASS = 4, // File class.
EI_DATA = 5, // Data encoding.
EI_VERSION = 6, // File version.
EI_OSABI = 7, // OS/ABI identification.
EI_ABIVERSION = 8, // ABI version.
EI_PAD = 9, // Start of padding bytes.
EI_NIDENT = 16 // Number of bytes in e_ident.
};
// BEGIN android-added for compat
constexpr char ELFMAG0 = ElfMagic[EI_MAG0];
constexpr char ELFMAG1 = ElfMagic[EI_MAG1];
constexpr char ELFMAG2 = ElfMagic[EI_MAG2];
constexpr char ELFMAG3 = ElfMagic[EI_MAG3];
constexpr char ELFMAG[] = "\177ELF";
constexpr int SELFMAG = 4;
constexpr int NT_PRSTATUS = 1;
// END android-added for compat
struct Elf32_Ehdr {
unsigned char e_ident[EI_NIDENT]; // ELF Identification bytes
Elf32_Half e_type; // Type of file (see ET_* below)
Elf32_Half e_machine; // Required architecture for this file (see EM_*)
Elf32_Word e_version; // Must be equal to 1
Elf32_Addr e_entry; // Address to jump to in order to start program
Elf32_Off e_phoff; // Program header table's file offset, in bytes
Elf32_Off e_shoff; // Section header table's file offset, in bytes
Elf32_Word e_flags; // Processor-specific flags
Elf32_Half e_ehsize; // Size of ELF header, in bytes
Elf32_Half e_phentsize; // Size of an entry in the program header table
Elf32_Half e_phnum; // Number of entries in the program header table
Elf32_Half e_shentsize; // Size of an entry in the section header table
Elf32_Half e_shnum; // Number of entries in the section header table
Elf32_Half e_shstrndx; // Sect hdr table index of sect name string table
bool checkMagic() const {
return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0;
}
unsigned char getFileClass() const { return e_ident[EI_CLASS]; }
unsigned char getDataEncoding() const { return e_ident[EI_DATA]; }
};
// 64-bit ELF header. Fields are the same as for ELF32, but with different
// types (see above).
struct Elf64_Ehdr {
unsigned char e_ident[EI_NIDENT];
Elf64_Half e_type;
Elf64_Half e_machine;
Elf64_Word e_version;
Elf64_Addr e_entry;
Elf64_Off e_phoff;
Elf64_Off e_shoff;
Elf64_Word e_flags;
Elf64_Half e_ehsize;
Elf64_Half e_phentsize;
Elf64_Half e_phnum;
Elf64_Half e_shentsize;
Elf64_Half e_shnum;
Elf64_Half e_shstrndx;
bool checkMagic() const {
return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0;
}
unsigned char getFileClass() const { return e_ident[EI_CLASS]; }
unsigned char getDataEncoding() const { return e_ident[EI_DATA]; }
};
// File types
enum {
ET_NONE = 0, // No file type
ET_REL = 1, // Relocatable file
ET_EXEC = 2, // Executable file
ET_DYN = 3, // Shared object file
ET_CORE = 4, // Core file
ET_LOPROC = 0xff00, // Beginning of processor-specific codes
ET_HIPROC = 0xffff // Processor-specific
};
// Versioning
enum {
EV_NONE = 0,
EV_CURRENT = 1
};
// Machine architectures
enum {
EM_NONE = 0, // No machine
EM_M32 = 1, // AT&T WE 32100
EM_SPARC = 2, // SPARC
EM_386 = 3, // Intel 386
EM_68K = 4, // Motorola 68000
EM_88K = 5, // Motorola 88000
EM_486 = 6, // Intel 486 (deprecated)
EM_860 = 7, // Intel 80860
EM_MIPS = 8, // MIPS R3000
EM_S370 = 9, // IBM System/370
EM_MIPS_RS3_LE = 10, // MIPS RS3000 Little-endian
EM_PARISC = 15, // Hewlett-Packard PA-RISC
EM_VPP500 = 17, // Fujitsu VPP500
EM_SPARC32PLUS = 18, // Enhanced instruction set SPARC
EM_960 = 19, // Intel 80960
EM_PPC = 20, // PowerPC
EM_PPC64 = 21, // PowerPC64
EM_S390 = 22, // IBM System/390
EM_SPU = 23, // IBM SPU/SPC
EM_V800 = 36, // NEC V800
EM_FR20 = 37, // Fujitsu FR20
EM_RH32 = 38, // TRW RH-32
EM_RCE = 39, // Motorola RCE
EM_ARM = 40, // ARM
EM_ALPHA = 41, // DEC Alpha
EM_SH = 42, // Hitachi SH
EM_SPARCV9 = 43, // SPARC V9
EM_TRICORE = 44, // Siemens TriCore
EM_ARC = 45, // Argonaut RISC Core
EM_H8_300 = 46, // Hitachi H8/300
EM_H8_300H = 47, // Hitachi H8/300H
EM_H8S = 48, // Hitachi H8S
EM_H8_500 = 49, // Hitachi H8/500
EM_IA_64 = 50, // Intel IA-64 processor architecture
EM_MIPS_X = 51, // Stanford MIPS-X
EM_COLDFIRE = 52, // Motorola ColdFire
EM_68HC12 = 53, // Motorola M68HC12
EM_MMA = 54, // Fujitsu MMA Multimedia Accelerator
EM_PCP = 55, // Siemens PCP
EM_NCPU = 56, // Sony nCPU embedded RISC processor
EM_NDR1 = 57, // Denso NDR1 microprocessor
EM_STARCORE = 58, // Motorola Star*Core processor
EM_ME16 = 59, // Toyota ME16 processor
EM_ST100 = 60, // STMicroelectronics ST100 processor
EM_TINYJ = 61, // Advanced Logic Corp. TinyJ embedded processor family
EM_X86_64 = 62, // AMD x86-64 architecture
EM_PDSP = 63, // Sony DSP Processor
EM_PDP10 = 64, // Digital Equipment Corp. PDP-10
EM_PDP11 = 65, // Digital Equipment Corp. PDP-11
EM_FX66 = 66, // Siemens FX66 microcontroller
EM_ST9PLUS = 67, // STMicroelectronics ST9+ 8/16 bit microcontroller
EM_ST7 = 68, // STMicroelectronics ST7 8-bit microcontroller
EM_68HC16 = 69, // Motorola MC68HC16 Microcontroller
EM_68HC11 = 70, // Motorola MC68HC11 Microcontroller
EM_68HC08 = 71, // Motorola MC68HC08 Microcontroller
EM_68HC05 = 72, // Motorola MC68HC05 Microcontroller
EM_SVX = 73, // Silicon Graphics SVx
EM_ST19 = 74, // STMicroelectronics ST19 8-bit microcontroller
EM_VAX = 75, // Digital VAX
EM_CRIS = 76, // Axis Communications 32-bit embedded processor
EM_JAVELIN = 77, // Infineon Technologies 32-bit embedded processor
EM_FIREPATH = 78, // Element 14 64-bit DSP Processor
EM_ZSP = 79, // LSI Logic 16-bit DSP Processor
EM_MMIX = 80, // Donald Knuth's educational 64-bit processor
EM_HUANY = 81, // Harvard University machine-independent object files
EM_PRISM = 82, // SiTera Prism
EM_AVR = 83, // Atmel AVR 8-bit microcontroller
EM_FR30 = 84, // Fujitsu FR30
EM_D10V = 85, // Mitsubishi D10V
EM_D30V = 86, // Mitsubishi D30V
EM_V850 = 87, // NEC v850
EM_M32R = 88, // Mitsubishi M32R
EM_MN10300 = 89, // Matsushita MN10300
EM_MN10200 = 90, // Matsushita MN10200
EM_PJ = 91, // picoJava
EM_OPENRISC = 92, // OpenRISC 32-bit embedded processor
EM_ARC_COMPACT = 93, // ARC International ARCompact processor (old
// spelling/synonym: EM_ARC_A5)
EM_XTENSA = 94, // Tensilica Xtensa Architecture
EM_VIDEOCORE = 95, // Alphamosaic VideoCore processor
EM_TMM_GPP = 96, // Thompson Multimedia General Purpose Processor
EM_NS32K = 97, // National Semiconductor 32000 series
EM_TPC = 98, // Tenor Network TPC processor
EM_SNP1K = 99, // Trebia SNP 1000 processor
EM_ST200 = 100, // STMicroelectronics (www.st.com) ST200
EM_IP2K = 101, // Ubicom IP2xxx microcontroller family
EM_MAX = 102, // MAX Processor
EM_CR = 103, // National Semiconductor CompactRISC microprocessor
EM_F2MC16 = 104, // Fujitsu F2MC16
EM_MSP430 = 105, // Texas Instruments embedded microcontroller msp430
EM_BLACKFIN = 106, // Analog Devices Blackfin (DSP) processor
EM_SE_C33 = 107, // S1C33 Family of Seiko Epson processors
EM_SEP = 108, // Sharp embedded microprocessor
EM_ARCA = 109, // Arca RISC Microprocessor
EM_UNICORE = 110, // Microprocessor series from PKU-Unity Ltd. and MPRC
// of Peking University
EM_EXCESS = 111, // eXcess: 16/32/64-bit configurable embedded CPU
EM_DXP = 112, // Icera Semiconductor Inc. Deep Execution Processor
EM_ALTERA_NIOS2 = 113, // Altera Nios II soft-core processor
EM_CRX = 114, // National Semiconductor CompactRISC CRX
EM_XGATE = 115, // Motorola XGATE embedded processor
EM_C166 = 116, // Infineon C16x/XC16x processor
EM_M16C = 117, // Renesas M16C series microprocessors
EM_DSPIC30F = 118, // Microchip Technology dsPIC30F Digital Signal
// Controller
EM_CE = 119, // Freescale Communication Engine RISC core
EM_M32C = 120, // Renesas M32C series microprocessors
EM_TSK3000 = 131, // Altium TSK3000 core
EM_RS08 = 132, // Freescale RS08 embedded processor
EM_SHARC = 133, // Analog Devices SHARC family of 32-bit DSP
// processors
EM_ECOG2 = 134, // Cyan Technology eCOG2 microprocessor
EM_SCORE7 = 135, // Sunplus S+core7 RISC processor
EM_DSP24 = 136, // New Japan Radio (NJR) 24-bit DSP Processor
EM_VIDEOCORE3 = 137, // Broadcom VideoCore III processor
EM_LATTICEMICO32 = 138, // RISC processor for Lattice FPGA architecture
EM_SE_C17 = 139, // Seiko Epson C17 family
EM_TI_C6000 = 140, // The Texas Instruments TMS320C6000 DSP family
EM_TI_C2000 = 141, // The Texas Instruments TMS320C2000 DSP family
EM_TI_C5500 = 142, // The Texas Instruments TMS320C55x DSP family
EM_MMDSP_PLUS = 160, // STMicroelectronics 64bit VLIW Data Signal Processor
EM_CYPRESS_M8C = 161, // Cypress M8C microprocessor
EM_R32C = 162, // Renesas R32C series microprocessors
EM_TRIMEDIA = 163, // NXP Semiconductors TriMedia architecture family
EM_HEXAGON = 164, // Qualcomm Hexagon processor
EM_8051 = 165, // Intel 8051 and variants
EM_STXP7X = 166, // STMicroelectronics STxP7x family of configurable
// and extensible RISC processors
EM_NDS32 = 167, // Andes Technology compact code size embedded RISC
// processor family
EM_ECOG1 = 168, // Cyan Technology eCOG1X family
EM_ECOG1X = 168, // Cyan Technology eCOG1X family
EM_MAXQ30 = 169, // Dallas Semiconductor MAXQ30 Core Micro-controllers
EM_XIMO16 = 170, // New Japan Radio (NJR) 16-bit DSP Processor
EM_MANIK = 171, // M2000 Reconfigurable RISC Microprocessor
EM_CRAYNV2 = 172, // Cray Inc. NV2 vector architecture
EM_RX = 173, // Renesas RX family
EM_METAG = 174, // Imagination Technologies META processor
// architecture
EM_MCST_ELBRUS = 175, // MCST Elbrus general purpose hardware architecture
EM_ECOG16 = 176, // Cyan Technology eCOG16 family
EM_CR16 = 177, // National Semiconductor CompactRISC CR16 16-bit
// microprocessor
EM_ETPU = 178, // Freescale Extended Time Processing Unit
EM_SLE9X = 179, // Infineon Technologies SLE9X core
EM_L10M = 180, // Intel L10M
EM_K10M = 181, // Intel K10M
EM_AARCH64 = 183, // ARM AArch64
EM_AVR32 = 185, // Atmel Corporation 32-bit microprocessor family
EM_STM8 = 186, // STMicroeletronics STM8 8-bit microcontroller
EM_TILE64 = 187, // Tilera TILE64 multicore architecture family
EM_TILEPRO = 188, // Tilera TILEPro multicore architecture family
EM_CUDA = 190, // NVIDIA CUDA architecture
EM_TILEGX = 191, // Tilera TILE-Gx multicore architecture family
EM_CLOUDSHIELD = 192, // CloudShield architecture family
EM_COREA_1ST = 193, // KIPO-KAIST Core-A 1st generation processor family
EM_COREA_2ND = 194, // KIPO-KAIST Core-A 2nd generation processor family
EM_ARC_COMPACT2 = 195, // Synopsys ARCompact V2
EM_OPEN8 = 196, // Open8 8-bit RISC soft processor core
EM_RL78 = 197, // Renesas RL78 family
EM_VIDEOCORE5 = 198, // Broadcom VideoCore V processor
EM_78KOR = 199, // Renesas 78KOR family
EM_56800EX = 200 // Freescale 56800EX Digital Signal Controller (DSC)
};
// Object file classes.
enum {
ELFCLASSNONE = 0,
ELFCLASS32 = 1, // 32-bit object file
ELFCLASS64 = 2 // 64-bit object file
};
// Object file byte orderings.
enum {
ELFDATANONE = 0, // Invalid data encoding.
ELFDATA2LSB = 1, // Little-endian object file
ELFDATA2MSB = 2 // Big-endian object file
};
// OS ABI identification.
enum {
ELFOSABI_NONE = 0, // UNIX System V ABI
ELFOSABI_HPUX = 1, // HP-UX operating system
ELFOSABI_NETBSD = 2, // NetBSD
ELFOSABI_GNU = 3, // GNU/Linux
ELFOSABI_LINUX = 3, // Historical alias for ELFOSABI_GNU.
ELFOSABI_HURD = 4, // GNU/Hurd
ELFOSABI_SOLARIS = 6, // Solaris
ELFOSABI_AIX = 7, // AIX
ELFOSABI_IRIX = 8, // IRIX
ELFOSABI_FREEBSD = 9, // FreeBSD
ELFOSABI_TRU64 = 10, // TRU64 UNIX
ELFOSABI_MODESTO = 11, // Novell Modesto
ELFOSABI_OPENBSD = 12, // OpenBSD
ELFOSABI_OPENVMS = 13, // OpenVMS
ELFOSABI_NSK = 14, // Hewlett-Packard Non-Stop Kernel
ELFOSABI_AROS = 15, // AROS
ELFOSABI_FENIXOS = 16, // FenixOS
ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000
ELFOSABI_C6000_LINUX = 65, // Linux TMS320C6000
ELFOSABI_ARM = 97, // ARM
ELFOSABI_STANDALONE = 255 // Standalone (embedded) application
};
// X86_64 relocations.
enum {
R_X86_64_NONE = 0,
R_X86_64_64 = 1,
R_X86_64_PC32 = 2,
R_X86_64_GOT32 = 3,
R_X86_64_PLT32 = 4,
R_X86_64_COPY = 5,
R_X86_64_GLOB_DAT = 6,
R_X86_64_JUMP_SLOT = 7,
R_X86_64_RELATIVE = 8,
R_X86_64_GOTPCREL = 9,
R_X86_64_32 = 10,
R_X86_64_32S = 11,
R_X86_64_16 = 12,
R_X86_64_PC16 = 13,
R_X86_64_8 = 14,
R_X86_64_PC8 = 15,
R_X86_64_DTPMOD64 = 16,
R_X86_64_DTPOFF64 = 17,
R_X86_64_TPOFF64 = 18,
R_X86_64_TLSGD = 19,
R_X86_64_TLSLD = 20,
R_X86_64_DTPOFF32 = 21,
R_X86_64_GOTTPOFF = 22,
R_X86_64_TPOFF32 = 23,
R_X86_64_PC64 = 24,
R_X86_64_GOTOFF64 = 25,
R_X86_64_GOTPC32 = 26,
R_X86_64_GOT64 = 27,
R_X86_64_GOTPCREL64 = 28,
R_X86_64_GOTPC64 = 29,
R_X86_64_GOTPLT64 = 30,
R_X86_64_PLTOFF64 = 31,
R_X86_64_SIZE32 = 32,
R_X86_64_SIZE64 = 33,
R_X86_64_GOTPC32_TLSDESC = 34,
R_X86_64_TLSDESC_CALL = 35,
R_X86_64_TLSDESC = 36,
R_X86_64_IRELATIVE = 37
};
// i386 relocations.
// TODO: this is just a subset
enum {
R_386_NONE = 0,
R_386_32 = 1,
R_386_PC32 = 2,
R_386_GOT32 = 3,
R_386_PLT32 = 4,
R_386_COPY = 5,
R_386_GLOB_DAT = 6,
R_386_JUMP_SLOT = 7,
R_386_RELATIVE = 8,
R_386_GOTOFF = 9,
R_386_GOTPC = 10,
R_386_32PLT = 11,
R_386_TLS_TPOFF = 14,
R_386_TLS_IE = 15,
R_386_TLS_GOTIE = 16,
R_386_TLS_LE = 17,
R_386_TLS_GD = 18,
R_386_TLS_LDM = 19,
R_386_16 = 20,
R_386_PC16 = 21,
R_386_8 = 22,
R_386_PC8 = 23,
R_386_TLS_GD_32 = 24,
R_386_TLS_GD_PUSH = 25,
R_386_TLS_GD_CALL = 26,
R_386_TLS_GD_POP = 27,
R_386_TLS_LDM_32 = 28,
R_386_TLS_LDM_PUSH = 29,
R_386_TLS_LDM_CALL = 30,
R_386_TLS_LDM_POP = 31,
R_386_TLS_LDO_32 = 32,
R_386_TLS_IE_32 = 33,
R_386_TLS_LE_32 = 34,
R_386_TLS_DTPMOD32 = 35,
R_386_TLS_DTPOFF32 = 36,
R_386_TLS_TPOFF32 = 37,
R_386_TLS_GOTDESC = 39,
R_386_TLS_DESC_CALL = 40,
R_386_TLS_DESC = 41,
R_386_IRELATIVE = 42,
R_386_NUM = 43
};
// ELF Relocation types for PPC32
enum {
R_PPC_NONE = 0, /* No relocation. */
R_PPC_ADDR32 = 1,
R_PPC_ADDR24 = 2,
R_PPC_ADDR16 = 3,
R_PPC_ADDR16_LO = 4,
R_PPC_ADDR16_HI = 5,
R_PPC_ADDR16_HA = 6,
R_PPC_ADDR14 = 7,
R_PPC_ADDR14_BRTAKEN = 8,
R_PPC_ADDR14_BRNTAKEN = 9,
R_PPC_REL24 = 10,
R_PPC_REL14 = 11,
R_PPC_REL14_BRTAKEN = 12,
R_PPC_REL14_BRNTAKEN = 13,
R_PPC_GOT16 = 14,
R_PPC_GOT16_LO = 15,
R_PPC_GOT16_HI = 16,
R_PPC_GOT16_HA = 17,
R_PPC_REL32 = 26,
R_PPC_TLS = 67,
R_PPC_DTPMOD32 = 68,
R_PPC_TPREL16 = 69,
R_PPC_TPREL16_LO = 70,
R_PPC_TPREL16_HI = 71,
R_PPC_TPREL16_HA = 72,
R_PPC_TPREL32 = 73,
R_PPC_DTPREL16 = 74,
R_PPC_DTPREL16_LO = 75,
R_PPC_DTPREL16_HI = 76,
R_PPC_DTPREL16_HA = 77,
R_PPC_DTPREL32 = 78,
R_PPC_GOT_TLSGD16 = 79,
R_PPC_GOT_TLSGD16_LO = 80,
R_PPC_GOT_TLSGD16_HI = 81,
R_PPC_GOT_TLSGD16_HA = 82,
R_PPC_GOT_TLSLD16 = 83,
R_PPC_GOT_TLSLD16_LO = 84,
R_PPC_GOT_TLSLD16_HI = 85,
R_PPC_GOT_TLSLD16_HA = 86,
R_PPC_GOT_TPREL16 = 87,
R_PPC_GOT_TPREL16_LO = 88,
R_PPC_GOT_TPREL16_HI = 89,
R_PPC_GOT_TPREL16_HA = 90,
R_PPC_GOT_DTPREL16 = 91,
R_PPC_GOT_DTPREL16_LO = 92,
R_PPC_GOT_DTPREL16_HI = 93,
R_PPC_GOT_DTPREL16_HA = 94,
R_PPC_TLSGD = 95,
R_PPC_TLSLD = 96,
R_PPC_REL16 = 249,
R_PPC_REL16_LO = 250,
R_PPC_REL16_HI = 251,
R_PPC_REL16_HA = 252
};
// ELF Relocation types for PPC64
enum {
R_PPC64_NONE = 0,
R_PPC64_ADDR32 = 1,
R_PPC64_ADDR24 = 2,
R_PPC64_ADDR16 = 3,
R_PPC64_ADDR16_LO = 4,
R_PPC64_ADDR16_HI = 5,
R_PPC64_ADDR16_HA = 6,
R_PPC64_ADDR14 = 7,
R_PPC64_ADDR14_BRTAKEN = 8,
R_PPC64_ADDR14_BRNTAKEN = 9,
R_PPC64_REL24 = 10,
R_PPC64_REL14 = 11,
R_PPC64_REL14_BRTAKEN = 12,
R_PPC64_REL14_BRNTAKEN = 13,
R_PPC64_GOT16 = 14,
R_PPC64_GOT16_LO = 15,
R_PPC64_GOT16_HI = 16,
R_PPC64_GOT16_HA = 17,
R_PPC64_REL32 = 26,
R_PPC64_ADDR64 = 38,
R_PPC64_ADDR16_HIGHER = 39,
R_PPC64_ADDR16_HIGHERA = 40,
R_PPC64_ADDR16_HIGHEST = 41,
R_PPC64_ADDR16_HIGHESTA = 42,
R_PPC64_REL64 = 44,
R_PPC64_TOC16 = 47,
R_PPC64_TOC16_LO = 48,
R_PPC64_TOC16_HI = 49,
R_PPC64_TOC16_HA = 50,
R_PPC64_TOC = 51,
R_PPC64_ADDR16_DS = 56,
R_PPC64_ADDR16_LO_DS = 57,
R_PPC64_GOT16_DS = 58,
R_PPC64_GOT16_LO_DS = 59,
R_PPC64_TOC16_DS = 63,
R_PPC64_TOC16_LO_DS = 64,
R_PPC64_TLS = 67,
R_PPC64_DTPMOD64 = 68,
R_PPC64_TPREL16 = 69,
R_PPC64_TPREL16_LO = 70,
R_PPC64_TPREL16_HI = 71,
R_PPC64_TPREL16_HA = 72,
R_PPC64_TPREL64 = 73,
R_PPC64_DTPREL16 = 74,
R_PPC64_DTPREL16_LO = 75,
R_PPC64_DTPREL16_HI = 76,
R_PPC64_DTPREL16_HA = 77,
R_PPC64_DTPREL64 = 78,
R_PPC64_GOT_TLSGD16 = 79,
R_PPC64_GOT_TLSGD16_LO = 80,
R_PPC64_GOT_TLSGD16_HI = 81,
R_PPC64_GOT_TLSGD16_HA = 82,
R_PPC64_GOT_TLSLD16 = 83,
R_PPC64_GOT_TLSLD16_LO = 84,
R_PPC64_GOT_TLSLD16_HI = 85,
R_PPC64_GOT_TLSLD16_HA = 86,
R_PPC64_GOT_TPREL16_DS = 87,
R_PPC64_GOT_TPREL16_LO_DS = 88,
R_PPC64_GOT_TPREL16_HI = 89,
R_PPC64_GOT_TPREL16_HA = 90,
R_PPC64_GOT_DTPREL16_DS = 91,
R_PPC64_GOT_DTPREL16_LO_DS = 92,
R_PPC64_GOT_DTPREL16_HI = 93,
R_PPC64_GOT_DTPREL16_HA = 94,
R_PPC64_TPREL16_DS = 95,
R_PPC64_TPREL16_LO_DS = 96,
R_PPC64_TPREL16_HIGHER = 97,
R_PPC64_TPREL16_HIGHERA = 98,
R_PPC64_TPREL16_HIGHEST = 99,
R_PPC64_TPREL16_HIGHESTA = 100,
R_PPC64_DTPREL16_DS = 101,
R_PPC64_DTPREL16_LO_DS = 102,
R_PPC64_DTPREL16_HIGHER = 103,
R_PPC64_DTPREL16_HIGHERA = 104,
R_PPC64_DTPREL16_HIGHEST = 105,
R_PPC64_DTPREL16_HIGHESTA = 106,
R_PPC64_TLSGD = 107,
R_PPC64_TLSLD = 108,
R_PPC64_REL16 = 249,
R_PPC64_REL16_LO = 250,
R_PPC64_REL16_HI = 251,
R_PPC64_REL16_HA = 252
};
// ELF Relocation types for AArch64
enum {
R_AARCH64_NONE = 0x100,
R_AARCH64_ABS64 = 0x101,
R_AARCH64_ABS32 = 0x102,
R_AARCH64_ABS16 = 0x103,
R_AARCH64_PREL64 = 0x104,
R_AARCH64_PREL32 = 0x105,
R_AARCH64_PREL16 = 0x106,
R_AARCH64_MOVW_UABS_G0 = 0x107,
R_AARCH64_MOVW_UABS_G0_NC = 0x108,
R_AARCH64_MOVW_UABS_G1 = 0x109,
R_AARCH64_MOVW_UABS_G1_NC = 0x10a,
R_AARCH64_MOVW_UABS_G2 = 0x10b,
R_AARCH64_MOVW_UABS_G2_NC = 0x10c,
R_AARCH64_MOVW_UABS_G3 = 0x10d,
R_AARCH64_MOVW_SABS_G0 = 0x10e,
R_AARCH64_MOVW_SABS_G1 = 0x10f,
R_AARCH64_MOVW_SABS_G2 = 0x110,
R_AARCH64_LD_PREL_LO19 = 0x111,
R_AARCH64_ADR_PREL_LO21 = 0x112,
R_AARCH64_ADR_PREL_PG_HI21 = 0x113,
R_AARCH64_ADD_ABS_LO12_NC = 0x115,
R_AARCH64_LDST8_ABS_LO12_NC = 0x116,
R_AARCH64_TSTBR14 = 0x117,
R_AARCH64_CONDBR19 = 0x118,
R_AARCH64_JUMP26 = 0x11a,
R_AARCH64_CALL26 = 0x11b,
R_AARCH64_LDST16_ABS_LO12_NC = 0x11c,
R_AARCH64_LDST32_ABS_LO12_NC = 0x11d,
R_AARCH64_LDST64_ABS_LO12_NC = 0x11e,
R_AARCH64_LDST128_ABS_LO12_NC = 0x12b,
R_AARCH64_ADR_GOT_PAGE = 0x137,
R_AARCH64_LD64_GOT_LO12_NC = 0x138,
R_AARCH64_TLSLD_MOVW_DTPREL_G2 = 0x20b,
R_AARCH64_TLSLD_MOVW_DTPREL_G1 = 0x20c,
R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC = 0x20d,
R_AARCH64_TLSLD_MOVW_DTPREL_G0 = 0x20e,
R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC = 0x20f,
R_AARCH64_TLSLD_ADD_DTPREL_HI12 = 0x210,
R_AARCH64_TLSLD_ADD_DTPREL_LO12 = 0x211,
R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC = 0x212,
R_AARCH64_TLSLD_LDST8_DTPREL_LO12 = 0x213,
R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC = 0x214,
R_AARCH64_TLSLD_LDST16_DTPREL_LO12 = 0x215,
R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC = 0x216,
R_AARCH64_TLSLD_LDST32_DTPREL_LO12 = 0x217,
R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC = 0x218,
R_AARCH64_TLSLD_LDST64_DTPREL_LO12 = 0x219,
R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC = 0x21a,
R_AARCH64_TLSIE_MOVW_GOTTPREL_G1 = 0x21b,
R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC = 0x21c,
R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 = 0x21d,
R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC = 0x21e,
R_AARCH64_TLSIE_LD_GOTTPREL_PREL19 = 0x21f,
R_AARCH64_TLSLE_MOVW_TPREL_G2 = 0x220,
R_AARCH64_TLSLE_MOVW_TPREL_G1 = 0x221,
R_AARCH64_TLSLE_MOVW_TPREL_G1_NC = 0x222,
R_AARCH64_TLSLE_MOVW_TPREL_G0 = 0x223,
R_AARCH64_TLSLE_MOVW_TPREL_G0_NC = 0x224,
R_AARCH64_TLSLE_ADD_TPREL_HI12 = 0x225,
R_AARCH64_TLSLE_ADD_TPREL_LO12 = 0x226,
R_AARCH64_TLSLE_ADD_TPREL_LO12_NC = 0x227,
R_AARCH64_TLSLE_LDST8_TPREL_LO12 = 0x228,
R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC = 0x229,
R_AARCH64_TLSLE_LDST16_TPREL_LO12 = 0x22a,
R_AARCH64_TLSLE_LDST16_TPREL_LO12_NC = 0x22b,
R_AARCH64_TLSLE_LDST32_TPREL_LO12 = 0x22c,
R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC = 0x22d,
R_AARCH64_TLSLE_LDST64_TPREL_LO12 = 0x22e,
R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC = 0x22f,
R_AARCH64_TLSDESC_ADR_PAGE = 0x232,
R_AARCH64_TLSDESC_LD64_LO12_NC = 0x233,
R_AARCH64_TLSDESC_ADD_LO12_NC = 0x234,
R_AARCH64_TLSDESC_CALL = 0x239
};
// ARM Specific e_flags
enum : unsigned {
EF_ARM_SOFT_FLOAT = 0x00000200U,
EF_ARM_VFP_FLOAT = 0x00000400U,
EF_ARM_EABI_UNKNOWN = 0x00000000U,
EF_ARM_EABI_VER1 = 0x01000000U,
EF_ARM_EABI_VER2 = 0x02000000U,
EF_ARM_EABI_VER3 = 0x03000000U,
EF_ARM_EABI_VER4 = 0x04000000U,
EF_ARM_EABI_VER5 = 0x05000000U,
EF_ARM_EABIMASK = 0xFF000000U
};
// ELF Relocation types for ARM
// Meets 2.08 ABI Specs.
enum {
R_ARM_NONE = 0x00,
R_ARM_PC24 = 0x01,
R_ARM_ABS32 = 0x02,
R_ARM_REL32 = 0x03,
R_ARM_LDR_PC_G0 = 0x04,
R_ARM_ABS16 = 0x05,
R_ARM_ABS12 = 0x06,
R_ARM_THM_ABS5 = 0x07,
R_ARM_ABS8 = 0x08,
R_ARM_SBREL32 = 0x09,
R_ARM_THM_CALL = 0x0a,
R_ARM_THM_PC8 = 0x0b,
R_ARM_BREL_ADJ = 0x0c,
R_ARM_TLS_DESC = 0x0d,
R_ARM_THM_SWI8 = 0x0e,
R_ARM_XPC25 = 0x0f,
R_ARM_THM_XPC22 = 0x10,
R_ARM_TLS_DTPMOD32 = 0x11,
R_ARM_TLS_DTPOFF32 = 0x12,
R_ARM_TLS_TPOFF32 = 0x13,
R_ARM_COPY = 0x14,
R_ARM_GLOB_DAT = 0x15,
R_ARM_JUMP_SLOT = 0x16,
R_ARM_RELATIVE = 0x17,
R_ARM_GOTOFF32 = 0x18,
R_ARM_BASE_PREL = 0x19,
R_ARM_GOT_BREL = 0x1a,
R_ARM_PLT32 = 0x1b,
R_ARM_CALL = 0x1c,
R_ARM_JUMP24 = 0x1d,
R_ARM_THM_JUMP24 = 0x1e,
R_ARM_BASE_ABS = 0x1f,
R_ARM_ALU_PCREL_7_0 = 0x20,
R_ARM_ALU_PCREL_15_8 = 0x21,
R_ARM_ALU_PCREL_23_15 = 0x22,
R_ARM_LDR_SBREL_11_0_NC = 0x23,
R_ARM_ALU_SBREL_19_12_NC = 0x24,
R_ARM_ALU_SBREL_27_20_CK = 0x25,
R_ARM_TARGET1 = 0x26,
R_ARM_SBREL31 = 0x27,
R_ARM_V4BX = 0x28,
R_ARM_TARGET2 = 0x29,
R_ARM_PREL31 = 0x2a,
R_ARM_MOVW_ABS_NC = 0x2b,
R_ARM_MOVT_ABS = 0x2c,
R_ARM_MOVW_PREL_NC = 0x2d,
R_ARM_MOVT_PREL = 0x2e,
R_ARM_THM_MOVW_ABS_NC = 0x2f,
R_ARM_THM_MOVT_ABS = 0x30,
R_ARM_THM_MOVW_PREL_NC = 0x31,
R_ARM_THM_MOVT_PREL = 0x32,
R_ARM_THM_JUMP19 = 0x33,
R_ARM_THM_JUMP6 = 0x34,
R_ARM_THM_ALU_PREL_11_0 = 0x35,
R_ARM_THM_PC12 = 0x36,
R_ARM_ABS32_NOI = 0x37,
R_ARM_REL32_NOI = 0x38,
R_ARM_ALU_PC_G0_NC = 0x39,
R_ARM_ALU_PC_G0 = 0x3a,
R_ARM_ALU_PC_G1_NC = 0x3b,
R_ARM_ALU_PC_G1 = 0x3c,
R_ARM_ALU_PC_G2 = 0x3d,
R_ARM_LDR_PC_G1 = 0x3e,
R_ARM_LDR_PC_G2 = 0x3f,
R_ARM_LDRS_PC_G0 = 0x40,
R_ARM_LDRS_PC_G1 = 0x41,
R_ARM_LDRS_PC_G2 = 0x42,
R_ARM_LDC_PC_G0 = 0x43,
R_ARM_LDC_PC_G1 = 0x44,
R_ARM_LDC_PC_G2 = 0x45,
R_ARM_ALU_SB_G0_NC = 0x46,
R_ARM_ALU_SB_G0 = 0x47,
R_ARM_ALU_SB_G1_NC = 0x48,
R_ARM_ALU_SB_G1 = 0x49,
R_ARM_ALU_SB_G2 = 0x4a,
R_ARM_LDR_SB_G0 = 0x4b,
R_ARM_LDR_SB_G1 = 0x4c,
R_ARM_LDR_SB_G2 = 0x4d,
R_ARM_LDRS_SB_G0 = 0x4e,
R_ARM_LDRS_SB_G1 = 0x4f,
R_ARM_LDRS_SB_G2 = 0x50,
R_ARM_LDC_SB_G0 = 0x51,
R_ARM_LDC_SB_G1 = 0x52,
R_ARM_LDC_SB_G2 = 0x53,
R_ARM_MOVW_BREL_NC = 0x54,
R_ARM_MOVT_BREL = 0x55,
R_ARM_MOVW_BREL = 0x56,
R_ARM_THM_MOVW_BREL_NC = 0x57,
R_ARM_THM_MOVT_BREL = 0x58,
R_ARM_THM_MOVW_BREL = 0x59,
R_ARM_TLS_GOTDESC = 0x5a,
R_ARM_TLS_CALL = 0x5b,
R_ARM_TLS_DESCSEQ = 0x5c,
R_ARM_THM_TLS_CALL = 0x5d,
R_ARM_PLT32_ABS = 0x5e,
R_ARM_GOT_ABS = 0x5f,
R_ARM_GOT_PREL = 0x60,
R_ARM_GOT_BREL12 = 0x61,
R_ARM_GOTOFF12 = 0x62,
R_ARM_GOTRELAX = 0x63,
R_ARM_GNU_VTENTRY = 0x64,
R_ARM_GNU_VTINHERIT = 0x65,
R_ARM_THM_JUMP11 = 0x66,
R_ARM_THM_JUMP8 = 0x67,
R_ARM_TLS_GD32 = 0x68,
R_ARM_TLS_LDM32 = 0x69,
R_ARM_TLS_LDO32 = 0x6a,
R_ARM_TLS_IE32 = 0x6b,
R_ARM_TLS_LE32 = 0x6c,
R_ARM_TLS_LDO12 = 0x6d,
R_ARM_TLS_LE12 = 0x6e,
R_ARM_TLS_IE12GP = 0x6f,
R_ARM_PRIVATE_0 = 0x70,
R_ARM_PRIVATE_1 = 0x71,
R_ARM_PRIVATE_2 = 0x72,
R_ARM_PRIVATE_3 = 0x73,
R_ARM_PRIVATE_4 = 0x74,
R_ARM_PRIVATE_5 = 0x75,
R_ARM_PRIVATE_6 = 0x76,
R_ARM_PRIVATE_7 = 0x77,
R_ARM_PRIVATE_8 = 0x78,
R_ARM_PRIVATE_9 = 0x79,
R_ARM_PRIVATE_10 = 0x7a,
R_ARM_PRIVATE_11 = 0x7b,
R_ARM_PRIVATE_12 = 0x7c,
R_ARM_PRIVATE_13 = 0x7d,
R_ARM_PRIVATE_14 = 0x7e,
R_ARM_PRIVATE_15 = 0x7f,
R_ARM_ME_TOO = 0x80,
R_ARM_THM_TLS_DESCSEQ16 = 0x81,
R_ARM_THM_TLS_DESCSEQ32 = 0x82
};
// Mips Specific e_flags
enum : unsigned {
EF_MIPS_NOREORDER = 0x00000001, // Don't reorder instructions
EF_MIPS_PIC = 0x00000002, // Position independent code
EF_MIPS_CPIC = 0x00000004, // Call object with Position independent code
EF_MIPS_ABI2 = 0x00000020,
EF_MIPS_32BITMODE = 0x00000100,
EF_MIPS_NAN2008 = 0x00000400, // Uses IEE 754-2008 NaN encoding
EF_MIPS_ABI_O32 = 0x00001000, // This file follows the first MIPS 32 bit ABI
//ARCH_ASE
EF_MIPS_MICROMIPS = 0x02000000, // microMIPS
EF_MIPS_ARCH_ASE_M16 =
0x04000000, // Has Mips-16 ISA extensions
//ARCH
EF_MIPS_ARCH_1 = 0x00000000, // MIPS1 instruction set
EF_MIPS_ARCH_2 = 0x10000000, // MIPS2 instruction set
EF_MIPS_ARCH_3 = 0x20000000, // MIPS3 instruction set
EF_MIPS_ARCH_4 = 0x30000000, // MIPS4 instruction set
EF_MIPS_ARCH_5 = 0x40000000, // MIPS5 instruction set
EF_MIPS_ARCH_32 = 0x50000000, // MIPS32 instruction set per linux not elf.h
EF_MIPS_ARCH_64 = 0x60000000, // MIPS64 instruction set per linux not elf.h
EF_MIPS_ARCH_32R2 = 0x70000000, // mips32r2
EF_MIPS_ARCH_64R2 = 0x80000000, // mips64r2
EF_MIPS_ARCH_32R6 = 0x90000000, // mips32r6
EF_MIPS_ARCH_64R6 = 0xa0000000, // mips64r6
EF_MIPS_ARCH = 0xf0000000 // Mask for applying EF_MIPS_ARCH_ variant
};
// ELF Relocation types for Mips
enum {
R_MIPS_NONE = 0,
R_MIPS_16 = 1,
R_MIPS_32 = 2,
R_MIPS_REL32 = 3,
R_MIPS_26 = 4,
R_MIPS_HI16 = 5,
R_MIPS_LO16 = 6,
R_MIPS_GPREL16 = 7,
R_MIPS_LITERAL = 8,
R_MIPS_GOT16 = 9,
R_MIPS_PC16 = 10,
R_MIPS_CALL16 = 11,
R_MIPS_GPREL32 = 12,
R_MIPS_UNUSED1 = 13,
R_MIPS_UNUSED2 = 14,
R_MIPS_SHIFT5 = 16,
R_MIPS_SHIFT6 = 17,
R_MIPS_64 = 18,
R_MIPS_GOT_DISP = 19,
R_MIPS_GOT_PAGE = 20,
R_MIPS_GOT_OFST = 21,
R_MIPS_GOT_HI16 = 22,
R_MIPS_GOT_LO16 = 23,
R_MIPS_SUB = 24,
R_MIPS_INSERT_A = 25,
R_MIPS_INSERT_B = 26,
R_MIPS_DELETE = 27,
R_MIPS_HIGHER = 28,
R_MIPS_HIGHEST = 29,
R_MIPS_CALL_HI16 = 30,
R_MIPS_CALL_LO16 = 31,
R_MIPS_SCN_DISP = 32,
R_MIPS_REL16 = 33,
R_MIPS_ADD_IMMEDIATE = 34,
R_MIPS_PJUMP = 35,
R_MIPS_RELGOT = 36,
R_MIPS_JALR = 37,
R_MIPS_TLS_DTPMOD32 = 38,
R_MIPS_TLS_DTPREL32 = 39,
R_MIPS_TLS_DTPMOD64 = 40,
R_MIPS_TLS_DTPREL64 = 41,
R_MIPS_TLS_GD = 42,
R_MIPS_TLS_LDM = 43,
R_MIPS_TLS_DTPREL_HI16 = 44,
R_MIPS_TLS_DTPREL_LO16 = 45,
R_MIPS_TLS_GOTTPREL = 46,
R_MIPS_TLS_TPREL32 = 47,
R_MIPS_TLS_TPREL64 = 48,
R_MIPS_TLS_TPREL_HI16 = 49,
R_MIPS_TLS_TPREL_LO16 = 50,
R_MIPS_GLOB_DAT = 51,
R_MIPS_PC21_S2 = 60,
R_MIPS_PC26_S2 = 61,
R_MIPS_PC18_S3 = 62,
R_MIPS_PC19_S2 = 63,
R_MIPS_PCHI16 = 64,
R_MIPS_PCLO16 = 65,
R_MIPS16_GOT16 = 102,
R_MIPS16_HI16 = 104,
R_MIPS16_LO16 = 105,
R_MIPS_COPY = 126,
R_MIPS_JUMP_SLOT = 127,
R_MICROMIPS_26_S1 = 133,
R_MICROMIPS_HI16 = 134,
R_MICROMIPS_LO16 = 135,
R_MICROMIPS_GOT16 = 138,
R_MICROMIPS_PC16_S1 = 141,
R_MICROMIPS_CALL16 = 142,
R_MICROMIPS_GOT_DISP = 145,
R_MICROMIPS_GOT_PAGE = 146,
R_MICROMIPS_GOT_OFST = 147,
R_MICROMIPS_TLS_GD = 162,
R_MICROMIPS_TLS_LDM = 163,
R_MICROMIPS_TLS_DTPREL_HI16 = 164,
R_MICROMIPS_TLS_DTPREL_LO16 = 165,
R_MICROMIPS_TLS_TPREL_HI16 = 169,
R_MICROMIPS_TLS_TPREL_LO16 = 170,
R_MIPS_NUM = 218,
R_MIPS_PC32 = 248
};
// Special values for the st_other field in the symbol table entry for MIPS.
enum {
STO_MIPS_OPTIONAL = 0x04, // Symbol whose definition is optional
STO_MIPS_PLT = 0x08, // PLT entry related dynamic table record
STO_MIPS_PIC = 0x20, // PIC func in an object mixes PIC/non-PIC
STO_MIPS_MICROMIPS = 0x80, // MIPS Specific ISA for MicroMips
STO_MIPS_MIPS16 = 0xf0 // MIPS Specific ISA for Mips16
};
// Hexagon Specific e_flags
// Release 5 ABI
enum {
// Object processor version flags, bits[3:0]
EF_HEXAGON_MACH_V2 = 0x00000001, // Hexagon V2
EF_HEXAGON_MACH_V3 = 0x00000002, // Hexagon V3
EF_HEXAGON_MACH_V4 = 0x00000003, // Hexagon V4
EF_HEXAGON_MACH_V5 = 0x00000004, // Hexagon V5
// Highest ISA version flags
EF_HEXAGON_ISA_MACH = 0x00000000, // Same as specified in bits[3:0]
// of e_flags
EF_HEXAGON_ISA_V2 = 0x00000010, // Hexagon V2 ISA
EF_HEXAGON_ISA_V3 = 0x00000020, // Hexagon V3 ISA
EF_HEXAGON_ISA_V4 = 0x00000030, // Hexagon V4 ISA
EF_HEXAGON_ISA_V5 = 0x00000040 // Hexagon V5 ISA
};
// Hexagon specific Section indexes for common small data
// Release 5 ABI
enum {
SHN_HEXAGON_SCOMMON = 0xff00, // Other access sizes
SHN_HEXAGON_SCOMMON_1 = 0xff01, // Byte-sized access
SHN_HEXAGON_SCOMMON_2 = 0xff02, // Half-word-sized access
SHN_HEXAGON_SCOMMON_4 = 0xff03, // Word-sized access
SHN_HEXAGON_SCOMMON_8 = 0xff04 // Double-word-size access
};
// ELF Relocation types for Hexagon
// Release 5 ABI
enum {
R_HEX_NONE = 0,
R_HEX_B22_PCREL = 1,
R_HEX_B15_PCREL = 2,
R_HEX_B7_PCREL = 3,
R_HEX_LO16 = 4,
R_HEX_HI16 = 5,
R_HEX_32 = 6,
R_HEX_16 = 7,
R_HEX_8 = 8,
R_HEX_GPREL16_0 = 9,
R_HEX_GPREL16_1 = 10,
R_HEX_GPREL16_2 = 11,
R_HEX_GPREL16_3 = 12,
R_HEX_HL16 = 13,
R_HEX_B13_PCREL = 14,
R_HEX_B9_PCREL = 15,
R_HEX_B32_PCREL_X = 16,
R_HEX_32_6_X = 17,
R_HEX_B22_PCREL_X = 18,
R_HEX_B15_PCREL_X = 19,
R_HEX_B13_PCREL_X = 20,
R_HEX_B9_PCREL_X = 21,
R_HEX_B7_PCREL_X = 22,
R_HEX_16_X = 23,
R_HEX_12_X = 24,
R_HEX_11_X = 25,
R_HEX_10_X = 26,
R_HEX_9_X = 27,
R_HEX_8_X = 28,
R_HEX_7_X = 29,
R_HEX_6_X = 30,
R_HEX_32_PCREL = 31,
R_HEX_COPY = 32,
R_HEX_GLOB_DAT = 33,
R_HEX_JMP_SLOT = 34,
R_HEX_RELATIVE = 35,
R_HEX_PLT_B22_PCREL = 36,
R_HEX_GOTREL_LO16 = 37,
R_HEX_GOTREL_HI16 = 38,
R_HEX_GOTREL_32 = 39,
R_HEX_GOT_LO16 = 40,
R_HEX_GOT_HI16 = 41,
R_HEX_GOT_32 = 42,
R_HEX_GOT_16 = 43,
R_HEX_DTPMOD_32 = 44,
R_HEX_DTPREL_LO16 = 45,
R_HEX_DTPREL_HI16 = 46,
R_HEX_DTPREL_32 = 47,
R_HEX_DTPREL_16 = 48,
R_HEX_GD_PLT_B22_PCREL = 49,
R_HEX_GD_GOT_LO16 = 50,
R_HEX_GD_GOT_HI16 = 51,
R_HEX_GD_GOT_32 = 52,
R_HEX_GD_GOT_16 = 53,
R_HEX_IE_LO16 = 54,
R_HEX_IE_HI16 = 55,
R_HEX_IE_32 = 56,
R_HEX_IE_GOT_LO16 = 57,
R_HEX_IE_GOT_HI16 = 58,
R_HEX_IE_GOT_32 = 59,
R_HEX_IE_GOT_16 = 60,
R_HEX_TPREL_LO16 = 61,
R_HEX_TPREL_HI16 = 62,
R_HEX_TPREL_32 = 63,
R_HEX_TPREL_16 = 64,
R_HEX_6_PCREL_X = 65,
R_HEX_GOTREL_32_6_X = 66,
R_HEX_GOTREL_16_X = 67,
R_HEX_GOTREL_11_X = 68,
R_HEX_GOT_32_6_X = 69,
R_HEX_GOT_16_X = 70,
R_HEX_GOT_11_X = 71,
R_HEX_DTPREL_32_6_X = 72,
R_HEX_DTPREL_16_X = 73,
R_HEX_DTPREL_11_X = 74,
R_HEX_GD_GOT_32_6_X = 75,
R_HEX_GD_GOT_16_X = 76,
R_HEX_GD_GOT_11_X = 77,
R_HEX_IE_32_6_X = 78,
R_HEX_IE_16_X = 79,
R_HEX_IE_GOT_32_6_X = 80,
R_HEX_IE_GOT_16_X = 81,
R_HEX_IE_GOT_11_X = 82,
R_HEX_TPREL_32_6_X = 83,
R_HEX_TPREL_16_X = 84,
R_HEX_TPREL_11_X = 85
};
// ELF Relocation types for S390/zSeries
enum {
R_390_NONE = 0,
R_390_8 = 1,
R_390_12 = 2,
R_390_16 = 3,
R_390_32 = 4,
R_390_PC32 = 5,
R_390_GOT12 = 6,
R_390_GOT32 = 7,
R_390_PLT32 = 8,
R_390_COPY = 9,
R_390_GLOB_DAT = 10,
R_390_JMP_SLOT = 11,
R_390_RELATIVE = 12,
R_390_GOTOFF = 13,
R_390_GOTPC = 14,
R_390_GOT16 = 15,
R_390_PC16 = 16,
R_390_PC16DBL = 17,
R_390_PLT16DBL = 18,
R_390_PC32DBL = 19,
R_390_PLT32DBL = 20,
R_390_GOTPCDBL = 21,
R_390_64 = 22,
R_390_PC64 = 23,
R_390_GOT64 = 24,
R_390_PLT64 = 25,
R_390_GOTENT = 26,
R_390_GOTOFF16 = 27,
R_390_GOTOFF64 = 28,
R_390_GOTPLT12 = 29,
R_390_GOTPLT16 = 30,
R_390_GOTPLT32 = 31,
R_390_GOTPLT64 = 32,
R_390_GOTPLTENT = 33,
R_390_PLTOFF16 = 34,
R_390_PLTOFF32 = 35,
R_390_PLTOFF64 = 36,
R_390_TLS_LOAD = 37,
R_390_TLS_GDCALL = 38,
R_390_TLS_LDCALL = 39,
R_390_TLS_GD32 = 40,
R_390_TLS_GD64 = 41,
R_390_TLS_GOTIE12 = 42,
R_390_TLS_GOTIE32 = 43,
R_390_TLS_GOTIE64 = 44,
R_390_TLS_LDM32 = 45,
R_390_TLS_LDM64 = 46,
R_390_TLS_IE32 = 47,
R_390_TLS_IE64 = 48,
R_390_TLS_IEENT = 49,
R_390_TLS_LE32 = 50,
R_390_TLS_LE64 = 51,
R_390_TLS_LDO32 = 52,
R_390_TLS_LDO64 = 53,
R_390_TLS_DTPMOD = 54,
R_390_TLS_DTPOFF = 55,
R_390_TLS_TPOFF = 56,
R_390_20 = 57,
R_390_GOT20 = 58,
R_390_GOTPLT20 = 59,
R_390_TLS_GOTIE20 = 60,
R_390_IRELATIVE = 61
};
// ELF Relocation type for Sparc.
enum {
R_SPARC_NONE = 0,
R_SPARC_8 = 1,
R_SPARC_16 = 2,
R_SPARC_32 = 3,
R_SPARC_DISP8 = 4,
R_SPARC_DISP16 = 5,
R_SPARC_DISP32 = 6,
R_SPARC_WDISP30 = 7,
R_SPARC_WDISP22 = 8,
R_SPARC_HI22 = 9,
R_SPARC_22 = 10,
R_SPARC_13 = 11,
R_SPARC_LO10 = 12,
R_SPARC_GOT10 = 13,
R_SPARC_GOT13 = 14,
R_SPARC_GOT22 = 15,
R_SPARC_PC10 = 16,
R_SPARC_PC22 = 17,
R_SPARC_WPLT30 = 18,
R_SPARC_COPY = 19,
R_SPARC_GLOB_DAT = 20,
R_SPARC_JMP_SLOT = 21,
R_SPARC_RELATIVE = 22,
R_SPARC_UA32 = 23,
R_SPARC_PLT32 = 24,
R_SPARC_HIPLT22 = 25,
R_SPARC_LOPLT10 = 26,
R_SPARC_PCPLT32 = 27,
R_SPARC_PCPLT22 = 28,
R_SPARC_PCPLT10 = 29,
R_SPARC_10 = 30,
R_SPARC_11 = 31,
R_SPARC_64 = 32,
R_SPARC_OLO10 = 33,
R_SPARC_HH22 = 34,
R_SPARC_HM10 = 35,
R_SPARC_LM22 = 36,
R_SPARC_PC_HH22 = 37,
R_SPARC_PC_HM10 = 38,
R_SPARC_PC_LM22 = 39,
R_SPARC_WDISP16 = 40,
R_SPARC_WDISP19 = 41,
R_SPARC_7 = 43,
R_SPARC_5 = 44,
R_SPARC_6 = 45,
R_SPARC_DISP64 = 46,
R_SPARC_PLT64 = 47,
R_SPARC_HIX22 = 48,
R_SPARC_LOX10 = 49,
R_SPARC_H44 = 50,
R_SPARC_M44 = 51,
R_SPARC_L44 = 52,
R_SPARC_REGISTER = 53,
R_SPARC_UA64 = 54,
R_SPARC_UA16 = 55,
R_SPARC_TLS_GD_HI22 = 56,
R_SPARC_TLS_GD_LO10 = 57,
R_SPARC_TLS_GD_ADD = 58,
R_SPARC_TLS_GD_CALL = 59,
R_SPARC_TLS_LDM_HI22 = 60,
R_SPARC_TLS_LDM_LO10 = 61,
R_SPARC_TLS_LDM_ADD = 62,
R_SPARC_TLS_LDM_CALL = 63,
R_SPARC_TLS_LDO_HIX22 = 64,
R_SPARC_TLS_LDO_LOX10 = 65,
R_SPARC_TLS_LDO_ADD = 66,
R_SPARC_TLS_IE_HI22 = 67,
R_SPARC_TLS_IE_LO10 = 68,
R_SPARC_TLS_IE_LD = 69,
R_SPARC_TLS_IE_LDX = 70,
R_SPARC_TLS_IE_ADD = 71,
R_SPARC_TLS_LE_HIX22 = 72,
R_SPARC_TLS_LE_LOX10 = 73,
R_SPARC_TLS_DTPMOD32 = 74,
R_SPARC_TLS_DTPMOD64 = 75,
R_SPARC_TLS_DTPOFF32 = 76,
R_SPARC_TLS_DTPOFF64 = 77,
R_SPARC_TLS_TPOFF32 = 78,
R_SPARC_TLS_TPOFF64 = 79,
R_SPARC_GOTDATA_HIX22 = 80,
R_SPARC_GOTDATA_LOX22 = 81,
R_SPARC_GOTDATA_OP_HIX22 = 82,
R_SPARC_GOTDATA_OP_LOX22 = 83,
R_SPARC_GOTDATA_OP = 84
};
// Section header.
struct Elf32_Shdr {
Elf32_Word sh_name; // Section name (index into string table)
Elf32_Word sh_type; // Section type (SHT_*)
Elf32_Word sh_flags; // Section flags (SHF_*)
Elf32_Addr sh_addr; // Address where section is to be loaded
Elf32_Off sh_offset; // File offset of section data, in bytes
Elf32_Word sh_size; // Size of section, in bytes
Elf32_Word sh_link; // Section type-specific header table index link
Elf32_Word sh_info; // Section type-specific extra information
Elf32_Word sh_addralign; // Section address alignment
Elf32_Word sh_entsize; // Size of records contained within the section 每个表项的长度字节数
};
// Section header for ELF64 - same fields as ELF32, different types.
struct Elf64_Shdr {
Elf64_Word sh_name;
Elf64_Word sh_type;
Elf64_Xword sh_flags;
Elf64_Addr sh_addr;
Elf64_Off sh_offset;
Elf64_Xword sh_size;
Elf64_Word sh_link;
Elf64_Word sh_info;
Elf64_Xword sh_addralign;
Elf64_Xword sh_entsize;
};
// Special section indices.
enum {
SHN_UNDEF = 0, // Undefined, missing, irrelevant, or meaningless
SHN_LORESERVE = 0xff00, // Lowest reserved index
SHN_LOPROC = 0xff00, // Lowest processor-specific index
SHN_HIPROC = 0xff1f, // Highest processor-specific index
SHN_LOOS = 0xff20, // Lowest operating system-specific index
SHN_HIOS = 0xff3f, // Highest operating system-specific index
SHN_ABS = 0xfff1, // Symbol has absolute value; does not need relocation
SHN_COMMON = 0xfff2, // FORTRAN COMMON or C external global variables
SHN_XINDEX = 0xffff, // Mark that the index is >= SHN_LORESERVE
SHN_HIRESERVE = 0xffff // Highest reserved index
};
// Section types.
enum : unsigned {
SHT_NULL = 0, // No associated section (inactive entry).
SHT_PROGBITS = 1, // Program-defined contents.
SHT_SYMTAB = 2, // Symbol table.
SHT_STRTAB = 3, // String table.
SHT_RELA = 4, // Relocation entries; explicit addends.
SHT_HASH = 5, // Symbol hash table.
SHT_DYNAMIC = 6, // Information for dynamic linking.
SHT_NOTE = 7, // Information about the file.
SHT_NOBITS = 8, // Data occupies no space in the file.
SHT_REL = 9, // Relocation entries; no explicit addends.
SHT_SHLIB = 10, // Reserved.
SHT_DYNSYM = 11, // Symbol table.
SHT_INIT_ARRAY = 14, // Pointers to initialization functions.
SHT_FINI_ARRAY = 15, // Pointers to termination functions.
SHT_PREINIT_ARRAY = 16, // Pointers to pre-init functions.
SHT_GROUP = 17, // Section group.
SHT_SYMTAB_SHNDX = 18, // Indices for SHN_XINDEX entries.
SHT_LOOS = 0x60000000, // Lowest operating system-specific type.
SHT_GNU_ATTRIBUTES= 0x6ffffff5, // Object attributes.
SHT_GNU_HASH = 0x6ffffff6, // GNU-style hash table.
SHT_GNU_verdef = 0x6ffffffd, // GNU version definitions.
SHT_GNU_verneed = 0x6ffffffe, // GNU version references.
SHT_GNU_versym = 0x6fffffff, // GNU symbol versions table.
SHT_HIOS = 0x6fffffff, // Highest operating system-specific type.
SHT_LOPROC = 0x70000000, // Lowest processor arch-specific type.
// Fixme: All this is duplicated in MCSectionELF. Why??
// Exception Index table
SHT_ARM_EXIDX = 0x70000001U,
// BPABI DLL dynamic linking pre-emption map
SHT_ARM_PREEMPTMAP = 0x70000002U,
// Object file compatibility attributes
SHT_ARM_ATTRIBUTES = 0x70000003U,
SHT_ARM_DEBUGOVERLAY = 0x70000004U,
SHT_ARM_OVERLAYSECTION = 0x70000005U,
SHT_HEX_ORDERED = 0x70000000, // Link editor is to sort the entries in
// this section based on their sizes
SHT_X86_64_UNWIND = 0x70000001, // Unwind information
SHT_MIPS_REGINFO = 0x70000006, // Register usage information
SHT_MIPS_OPTIONS = 0x7000000d, // General options
SHT_MIPS_ABIFLAGS = 0x7000002a, // Abiflags options
SHT_HIPROC = 0x7fffffff, // Highest processor arch-specific type.
SHT_LOUSER = 0x80000000, // Lowest type reserved for applications.
SHT_HIUSER = 0xffffffff // Highest type reserved for applications.
};
// Section flags.
enum : unsigned {
// Section data should be writable during execution.
SHF_WRITE = 0x1,
// Section occupies memory during program execution.
SHF_ALLOC = 0x2,
// Section contains executable machine instructions.
SHF_EXECINSTR = 0x4,
// The data in this section may be merged.
SHF_MERGE = 0x10,
// The data in this section is null-terminated strings.
SHF_STRINGS = 0x20,
// A field in this section holds a section header table index.
SHF_INFO_LINK = 0x40U,
// Adds special ordering requirements for link editors.
SHF_LINK_ORDER = 0x80U,
// This section requires special OS-specific processing to avoid incorrect
// behavior.
SHF_OS_NONCONFORMING = 0x100U,
// This section is a member of a section group.
SHF_GROUP = 0x200U,
// This section holds Thread-Local Storage.
SHF_TLS = 0x400U,
// This section is excluded from the final executable or shared library.
SHF_EXCLUDE = 0x80000000U,
// Start of target-specific flags.
/// XCORE_SHF_CP_SECTION - All sections with the "c" flag are grouped
/// together by the linker to form the constant pool and the cp register is
/// set to the start of the constant pool by the boot code.
XCORE_SHF_CP_SECTION = 0x800U,
/// XCORE_SHF_DP_SECTION - All sections with the "d" flag are grouped
/// together by the linker to form the data section and the dp register is
/// set to the start of the section by the boot code.
XCORE_SHF_DP_SECTION = 0x1000U,
SHF_MASKOS = 0x0ff00000,
// Bits indicating processor-specific flags.
SHF_MASKPROC = 0xf0000000,
// If an object file section does not have this flag set, then it may not hold
// more than 2GB and can be freely referred to in objects using smaller code
// models. Otherwise, only objects using larger code models can refer to them.
// For example, a medium code model object can refer to data in a section that
// sets this flag besides being able to refer to data in a section that does
// not set it; likewise, a small code model object can refer only to code in a
// section that does not set this flag.
SHF_X86_64_LARGE = 0x10000000,
// All sections with the GPREL flag are grouped into a global data area
// for faster accesses
SHF_HEX_GPREL = 0x10000000,
// Section contains text/data which may be replicated in other sections.
// Linker must retain only one copy.
SHF_MIPS_NODUPES = 0x01000000,
// Linker must generate implicit hidden weak names.
SHF_MIPS_NAMES = 0x02000000,
// Section data local to process.
SHF_MIPS_LOCAL = 0x04000000,
// Do not strip this section.
SHF_MIPS_NOSTRIP = 0x08000000,
// Section must be part of global data area.
SHF_MIPS_GPREL = 0x10000000,
// This section should be merged.
SHF_MIPS_MERGE = 0x20000000,
// Address size to be inferred from section entry size.
SHF_MIPS_ADDR = 0x40000000,
// Section data is string data by default.
SHF_MIPS_STRING = 0x80000000
};
// Section Group Flags
enum : unsigned {
GRP_COMDAT = 0x1,
GRP_MASKOS = 0x0ff00000,
GRP_MASKPROC = 0xf0000000
};
// Symbol table entries for ELF32.
struct Elf32_Sym {
Elf32_Word st_name; // Symbol name (index into string table)
Elf32_Addr st_value; // Value or address associated with the symbol
Elf32_Word st_size; // Size of the symbol
unsigned char st_info; // Symbol's type and binding attributes
unsigned char st_other; // Must be zero; reserved
Elf32_Half st_shndx; // Which section (header table index) it's defined in
// These accessors and mutators correspond to the ELF32_ST_BIND,
// ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
unsigned char getBinding() const { return st_info >> 4; }
unsigned char getType() const { return st_info & 0x0f; }
void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
void setBindingAndType(unsigned char b, unsigned char t) {
st_info = (b << 4) + (t & 0x0f);
}
};
// BEGIN android-added for compat
static inline unsigned char ELF32_ST_BIND(unsigned char st_info) { return st_info >> 4; }
static inline unsigned char ELF32_ST_TYPE(unsigned char st_info) { return st_info & 0x0f; }
static inline unsigned char ELF64_ST_BIND(unsigned char st_info) { return st_info >> 4; }
static inline unsigned char ELF64_ST_TYPE(unsigned char st_info) { return st_info & 0x0f; }
// END android-added for compat
// Symbol table entries for ELF64.
struct Elf64_Sym {
Elf64_Word st_name; // Symbol name (index into string table)
unsigned char st_info; // Symbol's type and binding attributes
unsigned char st_other; // Must be zero; reserved
Elf64_Half st_shndx; // Which section (header tbl index) it's defined in
Elf64_Addr st_value; // Value or address associated with the symbol
Elf64_Xword st_size; // Size of the symbol
// These accessors and mutators are identical to those defined for ELF32
// symbol table entries.
unsigned char getBinding() const { return st_info >> 4; }
unsigned char getType() const { return st_info & 0x0f; }
void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
void setBindingAndType(unsigned char b, unsigned char t) {
st_info = (b << 4) + (t & 0x0f);
}
};
// The size (in bytes) of symbol table entries.
enum {
SYMENTRY_SIZE32 = 16, // 32-bit symbol entry size
SYMENTRY_SIZE64 = 24 // 64-bit symbol entry size.
};
// Symbol bindings.
enum {
STB_LOCAL = 0, // Local symbol, not visible outside obj file containing def
STB_GLOBAL = 1, // Global symbol, visible to all object files being combined
STB_WEAK = 2, // Weak symbol, like global but lower-precedence
STB_LOOS = 10, // Lowest operating system-specific binding type
STB_HIOS = 12, // Highest operating system-specific binding type
STB_LOPROC = 13, // Lowest processor-specific binding type
STB_HIPROC = 15 // Highest processor-specific binding type
};
// Symbol types.
enum {
STT_NOTYPE = 0, // Symbol's type is not specified
STT_OBJECT = 1, // Symbol is a data object (variable, array, etc.)
STT_FUNC = 2, // Symbol is executable code (function, etc.)
STT_SECTION = 3, // Symbol refers to a section
STT_FILE = 4, // Local, absolute symbol that refers to a file
STT_COMMON = 5, // An uninitialized common block
STT_TLS = 6, // Thread local data object
STT_LOOS = 7, // Lowest operating system-specific symbol type
STT_HIOS = 8, // Highest operating system-specific symbol type
STT_GNU_IFUNC = 10, // GNU indirect function
STT_LOPROC = 13, // Lowest processor-specific symbol type
STT_HIPROC = 15 // Highest processor-specific symbol type
};
enum {
STV_DEFAULT = 0, // Visibility is specified by binding type
STV_INTERNAL = 1, // Defined by processor supplements
STV_HIDDEN = 2, // Not visible to other components
STV_PROTECTED = 3 // Visible in other components but not preemptable
};
// Symbol number.
enum {
STN_UNDEF = 0
};
// Relocation entry, without explicit addend.
struct Elf32_Rel {
Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr)
Elf32_Word r_info; // Symbol table index and type of relocation to apply
// These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
// and ELF32_R_INFO macros defined in the ELF specification:
Elf32_Word getSymbol() const { return (r_info >> 8); }
unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); }
void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); }
void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
void setSymbolAndType(Elf32_Word s, unsigned char t) {
r_info = (s << 8) + t;
}
};
// Relocation entry with explicit addend.
struct Elf32_Rela {
Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr)
Elf32_Word r_info; // Symbol table index and type of relocation to apply
Elf32_Sword r_addend; // Compute value for relocatable field by adding this
// These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
// and ELF32_R_INFO macros defined in the ELF specification:
Elf32_Word getSymbol() const { return (r_info >> 8); }
unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); }
void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); }
void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
void setSymbolAndType(Elf32_Word s, unsigned char t) {
r_info = (s << 8) + t;
}
};
// Relocation entry, without explicit addend.
struct Elf64_Rel {
Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr).
Elf64_Xword r_info; // Symbol table index and type of relocation to apply.
// These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
// and ELF64_R_INFO macros defined in the ELF specification:
Elf64_Word getSymbol() const { return (r_info >> 32); }
Elf64_Word getType() const {
return (Elf64_Word) (r_info & 0xffffffffL);
}
void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); }
void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); }
void setSymbolAndType(Elf64_Word s, Elf64_Word t) {
r_info = ((Elf64_Xword)s << 32) + (t&0xffffffffL);
}
};
// Relocation entry with explicit addend.
struct Elf64_Rela {
Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr).
Elf64_Xword r_info; // Symbol table index and type of relocation to apply.
Elf64_Sxword r_addend; // Compute value for relocatable field by adding this.
// These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
// and ELF64_R_INFO macros defined in the ELF specification:
Elf64_Word getSymbol() const { return (r_info >> 32); }
Elf64_Word getType() const {
return (Elf64_Word) (r_info & 0xffffffffL);
}
void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); }
void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); }
void setSymbolAndType(Elf64_Word s, Elf64_Word t) {
r_info = ((Elf64_Xword)s << 32) + (t&0xffffffffL);
}
};
// Program header for ELF32.
struct Elf32_Phdr {
Elf32_Word p_type; // Type of segment
Elf32_Off p_offset; // File offset where segment is located, in bytes
Elf32_Addr p_vaddr; // Virtual address of beginning of segment
Elf32_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
Elf32_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
Elf32_Word p_memsz; // Num. of bytes in mem image of segment (may be zero)
Elf32_Word p_flags; // Segment flags
Elf32_Word p_align; // Segment alignment constraint
};
// Program header for ELF64.
struct Elf64_Phdr {
Elf64_Word p_type; // Type of segment
Elf64_Word p_flags; // Segment flags
Elf64_Off p_offset; // File offset where segment is located, in bytes
Elf64_Addr p_vaddr; // Virtual address of beginning of segment
Elf64_Addr p_paddr; // Physical addr of beginning of segment (OS-specific)
Elf64_Xword p_filesz; // Num. of bytes in file image of segment (may be zero)
Elf64_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero)
Elf64_Xword p_align; // Segment alignment constraint
};
// Segment types.
enum {
PT_NULL = 0, // Unused segment.
PT_LOAD = 1, // Loadable segment.
PT_DYNAMIC = 2, // Dynamic linking information.
PT_INTERP = 3, // Interpreter pathname.
PT_NOTE = 4, // Auxiliary information.
PT_SHLIB = 5, // Reserved.
PT_PHDR = 6, // The program header table itself.
PT_TLS = 7, // The thread-local storage template.
PT_LOOS = 0x60000000, // Lowest operating system-specific pt entry type.
PT_HIOS = 0x6fffffff, // Highest operating system-specific pt entry type.
PT_LOPROC = 0x70000000, // Lowest processor-specific program hdr entry type.
PT_HIPROC = 0x7fffffff, // Highest processor-specific program hdr entry type.
// x86-64 program header types.
// These all contain stack unwind tables.
PT_GNU_EH_FRAME = 0x6474e550,
PT_SUNW_EH_FRAME = 0x6474e550,
PT_SUNW_UNWIND = 0x6464e550,
PT_GNU_STACK = 0x6474e551, // Indicates stack executability.
PT_GNU_RELRO = 0x6474e552, // Read-only after relocation.
// ARM program header types.
PT_ARM_ARCHEXT = 0x70000000, // Platform architecture compatibility info
// These all contain stack unwind tables.
PT_ARM_EXIDX = 0x70000001,
PT_ARM_UNWIND = 0x70000001,
// MIPS program header types.
PT_MIPS_REGINFO = 0x70000000, // Register usage information.
PT_MIPS_RTPROC = 0x70000001, // Runtime procedure table.
PT_MIPS_OPTIONS = 0x70000002, // Options segment.
PT_MIPS_ABIFLAGS = 0x70000003 // Abiflags segment.
};
// Segment flag bits.
enum : unsigned {
PF_X = 1, // Execute
PF_W = 2, // Write
PF_R = 4, // Read
PF_MASKOS = 0x0ff00000,// Bits for operating system-specific semantics.
PF_MASKPROC = 0xf0000000 // Bits for processor-specific semantics.
};
// Dynamic table entry for ELF32.
struct Elf32_Dyn
{
Elf32_Sword d_tag; // Type of dynamic table entry.
union
{
Elf32_Word d_val; // Integer value of entry.
Elf32_Addr d_ptr; // Pointer value of entry.
} d_un;
};
// Dynamic table entry for ELF64.
struct Elf64_Dyn
{
Elf64_Sxword d_tag; // Type of dynamic table entry.
union
{
Elf64_Xword d_val; // Integer value of entry.
Elf64_Addr d_ptr; // Pointer value of entry.
} d_un;
};
// Dynamic table entry tags.
enum {
DT_NULL = 0, // Marks end of dynamic array.
DT_NEEDED = 1, // String table offset of needed library.
DT_PLTRELSZ = 2, // Size of relocation entries in PLT.
DT_PLTGOT = 3, // Address associated with linkage table.
DT_HASH = 4, // Address of symbolic hash table.
DT_STRTAB = 5, // Address of dynamic string table.
DT_SYMTAB = 6, // Address of dynamic symbol table.
DT_RELA = 7, // Address of relocation table (Rela entries).
DT_RELASZ = 8, // Size of Rela relocation table.
DT_RELAENT = 9, // Size of a Rela relocation entry.
DT_STRSZ = 10, // Total size of the string table.
DT_SYMENT = 11, // Size of a symbol table entry.
DT_INIT = 12, // Address of initialization function.
DT_FINI = 13, // Address of termination function.
DT_SONAME = 14, // String table offset of a shared objects name.
DT_RPATH = 15, // String table offset of library search path.
DT_SYMBOLIC = 16, // Changes symbol resolution algorithm.
DT_REL = 17, // Address of relocation table (Rel entries).
DT_RELSZ = 18, // Size of Rel relocation table.
DT_RELENT = 19, // Size of a Rel relocation entry.
DT_PLTREL = 20, // Type of relocation entry used for linking.
DT_DEBUG = 21, // Reserved for debugger.
DT_TEXTREL = 22, // Relocations exist for non-writable segments.
DT_JMPREL = 23, // Address of relocations associated with PLT.
DT_BIND_NOW = 24, // Process all relocations before execution.
DT_INIT_ARRAY = 25, // Pointer to array of initialization functions.
DT_FINI_ARRAY = 26, // Pointer to array of termination functions.
DT_INIT_ARRAYSZ = 27, // Size of DT_INIT_ARRAY.
DT_FINI_ARRAYSZ = 28, // Size of DT_FINI_ARRAY.
DT_RUNPATH = 29, // String table offset of lib search path.
DT_FLAGS = 30, // Flags.
DT_ENCODING = 32, // Values from here to DT_LOOS follow the rules
// for the interpretation of the d_un union.
DT_PREINIT_ARRAY = 32, // Pointer to array of preinit functions.
DT_PREINIT_ARRAYSZ = 33, // Size of the DT_PREINIT_ARRAY array.
DT_LOOS = 0x60000000, // Start of environment specific tags.
DT_HIOS = 0x6FFFFFFF, // End of environment specific tags.
DT_LOPROC = 0x70000000, // Start of processor specific tags.
DT_HIPROC = 0x7FFFFFFF, // End of processor specific tags.
DT_GNU_HASH = 0x6FFFFEF5, // Reference to the GNU hash table.
DT_RELACOUNT = 0x6FFFFFF9, // ELF32_Rela count.
DT_RELCOUNT = 0x6FFFFFFA, // ELF32_Rel count.
DT_FLAGS_1 = 0X6FFFFFFB, // Flags_1.
DT_VERSYM = 0x6FFFFFF0, // The address of .gnu.version section.
DT_VERDEF = 0X6FFFFFFC, // The address of the version definition table.
DT_VERDEFNUM = 0X6FFFFFFD, // The number of entries in DT_VERDEF.
DT_VERNEED = 0X6FFFFFFE, // The address of the version Dependency table.
DT_VERNEEDNUM = 0X6FFFFFFF, // The number of entries in DT_VERNEED.
// Mips specific dynamic table entry tags.
DT_MIPS_RLD_VERSION = 0x70000001, // 32 bit version number for runtime
// linker interface.
DT_MIPS_TIME_STAMP = 0x70000002, // Time stamp.
DT_MIPS_ICHECKSUM = 0x70000003, // Checksum of external strings
// and common sizes.
DT_MIPS_IVERSION = 0x70000004, // Index of version string
// in string table.
DT_MIPS_FLAGS = 0x70000005, // 32 bits of flags.
DT_MIPS_BASE_ADDRESS = 0x70000006, // Base address of the segment.
DT_MIPS_MSYM = 0x70000007, // Address of .msym section.
DT_MIPS_CONFLICT = 0x70000008, // Address of .conflict section.
DT_MIPS_LIBLIST = 0x70000009, // Address of .liblist section.
DT_MIPS_LOCAL_GOTNO = 0x7000000a, // Number of local global offset
// table entries.
DT_MIPS_CONFLICTNO = 0x7000000b, // Number of entries
// in the .conflict section.
DT_MIPS_LIBLISTNO = 0x70000010, // Number of entries
// in the .liblist section.
DT_MIPS_SYMTABNO = 0x70000011, // Number of entries
// in the .dynsym section.
DT_MIPS_UNREFEXTNO = 0x70000012, // Index of first external dynamic symbol
// not referenced locally.
DT_MIPS_GOTSYM = 0x70000013, // Index of first dynamic symbol
// in global offset table.
DT_MIPS_HIPAGENO = 0x70000014, // Number of page table entries
// in global offset table.
DT_MIPS_RLD_MAP = 0x70000016, // Address of run time loader map,
// used for debugging.
DT_MIPS_DELTA_CLASS = 0x70000017, // Delta C++ class definition.
DT_MIPS_DELTA_CLASS_NO = 0x70000018, // Number of entries
// in DT_MIPS_DELTA_CLASS.
DT_MIPS_DELTA_INSTANCE = 0x70000019, // Delta C++ class instances.
DT_MIPS_DELTA_INSTANCE_NO = 0x7000001A, // Number of entries
// in DT_MIPS_DELTA_INSTANCE.
DT_MIPS_DELTA_RELOC = 0x7000001B, // Delta relocations.
DT_MIPS_DELTA_RELOC_NO = 0x7000001C, // Number of entries
// in DT_MIPS_DELTA_RELOC.
DT_MIPS_DELTA_SYM = 0x7000001D, // Delta symbols that Delta
// relocations refer to.
DT_MIPS_DELTA_SYM_NO = 0x7000001E, // Number of entries
// in DT_MIPS_DELTA_SYM.
DT_MIPS_DELTA_CLASSSYM = 0x70000020, // Delta symbols that hold
// class declarations.
DT_MIPS_DELTA_CLASSSYM_NO = 0x70000021, // Number of entries
// in DT_MIPS_DELTA_CLASSSYM.
DT_MIPS_CXX_FLAGS = 0x70000022, // Flags indicating information
// about C++ flavor.
DT_MIPS_PIXIE_INIT = 0x70000023, // Pixie information.
DT_MIPS_SYMBOL_LIB = 0x70000024, // Address of .MIPS.symlib
DT_MIPS_LOCALPAGE_GOTIDX = 0x70000025, // The GOT index of the first PTE
// for a segment
DT_MIPS_LOCAL_GOTIDX = 0x70000026, // The GOT index of the first PTE
// for a local symbol
DT_MIPS_HIDDEN_GOTIDX = 0x70000027, // The GOT index of the first PTE
// for a hidden symbol
DT_MIPS_PROTECTED_GOTIDX = 0x70000028, // The GOT index of the first PTE
// for a protected symbol
DT_MIPS_OPTIONS = 0x70000029, // Address of `.MIPS.options'.
DT_MIPS_INTERFACE = 0x7000002A, // Address of `.interface'.
DT_MIPS_DYNSTR_ALIGN = 0x7000002B, // Unknown.
DT_MIPS_INTERFACE_SIZE = 0x7000002C, // Size of the .interface section.
DT_MIPS_RLD_TEXT_RESOLVE_ADDR = 0x7000002D, // Size of rld_text_resolve
// function stored in the GOT.
DT_MIPS_PERF_SUFFIX = 0x7000002E, // Default suffix of DSO to be added
// by rld on dlopen() calls.
DT_MIPS_COMPACT_SIZE = 0x7000002F, // Size of compact relocation
// section (O32).
DT_MIPS_GP_VALUE = 0x70000030, // GP value for auxiliary GOTs.
DT_MIPS_AUX_DYNAMIC = 0x70000031, // Address of auxiliary .dynamic.
DT_MIPS_PLTGOT = 0x70000032, // Address of the base of the PLTGOT.
DT_MIPS_RWPLT = 0x70000034 // Points to the base
// of a writable PLT.
};
// DT_FLAGS values.
enum {
DF_ORIGIN = 0x01, // The object may reference $ORIGIN.
DF_SYMBOLIC = 0x02, // Search the shared lib before searching the exe.
DF_TEXTREL = 0x04, // Relocations may modify a non-writable segment.
DF_BIND_NOW = 0x08, // Process all relocations on load.
DF_STATIC_TLS = 0x10 // Reject attempts to load dynamically.
};
// State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1 entry.
enum {
DF_1_NOW = 0x00000001, // Set RTLD_NOW for this object.
DF_1_GLOBAL = 0x00000002, // Set RTLD_GLOBAL for this object.
DF_1_GROUP = 0x00000004, // Set RTLD_GROUP for this object.
DF_1_NODELETE = 0x00000008, // Set RTLD_NODELETE for this object.
DF_1_LOADFLTR = 0x00000010, // Trigger filtee loading at runtime.
DF_1_INITFIRST = 0x00000020, // Set RTLD_INITFIRST for this object.
DF_1_NOOPEN = 0x00000040, // Set RTLD_NOOPEN for this object.
DF_1_ORIGIN = 0x00000080, // $ORIGIN must be handled.
DF_1_DIRECT = 0x00000100, // Direct binding enabled.
DF_1_TRANS = 0x00000200,
DF_1_INTERPOSE = 0x00000400, // Object is used to interpose.
DF_1_NODEFLIB = 0x00000800, // Ignore default lib search path.
DF_1_NODUMP = 0x00001000, // Object can't be dldump'ed.
DF_1_CONFALT = 0x00002000, // Configuration alternative created.
DF_1_ENDFILTEE = 0x00004000, // Filtee terminates filters search.
DF_1_DISPRELDNE = 0x00008000, // Disp reloc applied at build time.
DF_1_DISPRELPND = 0x00010000 // Disp reloc applied at run-time.
};
// DT_MIPS_FLAGS values.
enum {
RHF_NONE = 0x00000000, // No flags.
RHF_QUICKSTART = 0x00000001, // Uses shortcut pointers.
RHF_NOTPOT = 0x00000002, // Hash size is not a power of two.
RHS_NO_LIBRARY_REPLACEMENT = 0x00000004, // Ignore LD_LIBRARY_PATH.
RHF_NO_MOVE = 0x00000008, // DSO address may not be relocated.
RHF_SGI_ONLY = 0x00000010, // SGI specific features.
RHF_GUARANTEE_INIT = 0x00000020, // Guarantee that .init will finish
// executing before any non-init
// code in DSO is called.
RHF_DELTA_C_PLUS_PLUS = 0x00000040, // Contains Delta C++ code.
RHF_GUARANTEE_START_INIT = 0x00000080, // Guarantee that .init will start
// executing before any non-init
// code in DSO is called.
RHF_PIXIE = 0x00000100, // Generated by pixie.
RHF_DEFAULT_DELAY_LOAD = 0x00000200, // Delay-load DSO by default.
RHF_REQUICKSTART = 0x00000400, // Object may be requickstarted
RHF_REQUICKSTARTED = 0x00000800, // Object has been requickstarted
RHF_CORD = 0x00001000, // Generated by cord.
RHF_NO_UNRES_UNDEF = 0x00002000, // Object contains no unresolved
// undef symbols.
RHF_RLD_ORDER_SAFE = 0x00004000 // Symbol table is in a safe order.
};
// ElfXX_VerDef structure version (GNU versioning)
enum {
VER_DEF_NONE = 0,
VER_DEF_CURRENT = 1
};
// VerDef Flags (ElfXX_VerDef::vd_flags)
enum {
VER_FLG_BASE = 0x1,
VER_FLG_WEAK = 0x2,
VER_FLG_INFO = 0x4
};
// Special constants for the version table. (SHT_GNU_versym/.gnu.version)
enum {
VER_NDX_LOCAL = 0, // Unversioned local symbol
VER_NDX_GLOBAL = 1, // Unversioned global symbol
VERSYM_VERSION = 0x7fff, // Version Index mask
VERSYM_HIDDEN = 0x8000 // Hidden bit (non-default version)
};
// ElfXX_VerNeed structure version (GNU versioning)
enum {
VER_NEED_NONE = 0,
VER_NEED_CURRENT = 1
};
struct ElfTypes32 {
typedef Elf32_Addr Addr;
typedef Elf32_Off Off;
typedef Elf32_Half Half;
typedef Elf32_Word Word;
typedef Elf32_Sword Sword;
typedef Elf32_Ehdr Ehdr;
typedef Elf32_Shdr Shdr;
typedef Elf32_Sym Sym;
typedef Elf32_Rel Rel;
typedef Elf32_Rela Rela;
typedef Elf32_Phdr Phdr;
typedef Elf32_Dyn Dyn;
};
struct ElfTypes64 {
typedef Elf64_Addr Addr;
typedef Elf64_Off Off;
typedef Elf64_Half Half;
typedef Elf64_Word Word;
typedef Elf64_Sword Sword;
typedef Elf64_Xword Xword;
typedef Elf64_Sxword Sxword;
typedef Elf64_Ehdr Ehdr;
typedef Elf64_Shdr Shdr;
typedef Elf64_Sym Sym;
typedef Elf64_Rel Rel;
typedef Elf64_Rela Rela;
typedef Elf64_Phdr Phdr;
typedef Elf64_Dyn Dyn;
};
#endif //TELF_H
运行encryptSection.cpp，打印显示如下
那么现在在lib目录下的libdemo.so就是一个被加密特定section的so文件
（四）被加密so文件的使用
使用这个被加密特定section的so有两种方法，第一种就是新建一个app工程调用它，第二种是将在（一）中编译产生的app-debug.apk进行反编译，替换调原来的so，再重打包，签名，最后安装。
第二种试过，可以用，这里我们采用第一种方法。
1.as中新建一个工程，选择empty activity，创建完成后，修改并添加目录结构如下：
MainActivity.java代码如下：
package com.encode.sofile;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
static {
System.loadLibrary("demo");
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Example of a call to a native method
TextView tv = findViewById(R.id.sample_text);
tv.setText(getString());
}
public native String getString();
}
注意这个包路径一定要和（一）中的包路径一样
build.gradle代码如下：
apply plugin: 'com.android.application'
android {
compileSdkVersion 30
buildToolsVersion "30.0.2"
defaultConfig {
applicationId "com.encode.sofile"
minSdkVersion 21
targetSdkVersion 30
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
// 需要添加如下代码
sourceSets{
main{
jniLibs.srcDirs=['libs']
}
}
}
dependencies {
implementation fileTree(dir: "libs", include: ["*.jar"])
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}
编译并安装app，日志打印如下：
com.encode.sofile I/testApp: base:0xf4274000 nblock:0x38 nsize:0x3
com.encode.sofile I/testApp: addr:80
com.encode.sofile I/testApp: addr:b5
com.encode.sofile I/testApp: addr:6f
com.encode.sofile I/testApp: addr:46
com.encode.sofile I/testApp: addr:82
com.encode.sofile I/testApp: addr:b0
com.encode.sofile I/testApp: addr:1
com.encode.sofile I/testApp: addr:90
com.encode.sofile I/testApp: addr:8
com.encode.sofile I/testApp: addr:49
com.encode.sofile I/testApp: addr:79
com.encode.sofile I/testApp: addr:44
com.encode.sofile I/testApp: addr:8
com.encode.sofile I/testApp: addr:4a
com.encode.sofile I/testApp: addr:7a
com.encode.sofile I/testApp: addr:44
com.encode.sofile I/testApp: addr:4
com.encode.sofile I/testApp: addr:20
com.encode.sofile I/testApp: addr:fe
com.encode.sofile I/testApp: addr:f7
com.encode.sofile I/testApp: addr:ba
com.encode.sofile I/testApp: addr:ea
com.encode.sofile I/testApp: addr:1
com.encode.sofile I/testApp: addr:99
com.encode.sofile I/testApp: addr:6
com.encode.sofile I/testApp: addr:4a
com.encode.sofile I/testApp: addr:7a
com.encode.sofile I/testApp: addr:44
com.encode.sofile I/testApp: addr:0
com.encode.sofile I/testApp: addr:90
com.encode.sofile I/testApp: addr:8
com.encode.sofile I/testApp: addr:46
com.encode.sofile I/testApp: addr:11
com.encode.sofile I/testApp: addr:46
com.encode.sofile I/testApp: addr:fe
com.encode.sofile I/testApp: addr:f7
com.encode.sofile I/testApp: addr:b8
com.encode.sofile I/testApp: addr:ea
com.encode.sofile I/testApp: addr:2
com.encode.sofile I/testApp: addr:b0
com.encode.sofile I/testApp: addr:80
com.encode.sofile I/testApp: addr:bd
com.encode.sofile I/testApp: addr:0
com.encode.sofile I/testApp: addr:bf
com.encode.sofile I/testApp: addr:96
com.encode.sofile I/testApp: addr:3
com.encode.sofile I/testApp: addr:0
com.encode.sofile I/testApp: addr:0
com.encode.sofile I/testApp: addr:9a
com.encode.sofile I/testApp: addr:3
com.encode.sofile I/testApp: addr:0
com.encode.sofile I/testApp: addr:0
com.encode.sofile I/testApp: addr:aa
com.encode.sofile I/testApp: addr:3
com.encode.sofile I/testApp: addr:0
com.encode.sofile I/testApp: addr:0
com.encode.sofile I/testApp: Decrypt success
com.encode.sofile I/testApp: 加载成功111111！！！并且app正常加载，经测试发现该app在android 6可以正常加载，但是在android 7.1 8.0 测试报错：dlopen failed: "/data/app/com.encode.sofile-lB_-BwHxKfanaXEfodP92w==/lib/arm/libdemo.so" .dynamic section header was not found。
原因是：Android7.0后JNI库必须保留Section Headers。由于加密时修改了shoff值，导致加载so时解析Section Headers 解析不了。
解决方案：shoff和entry目的是为了存储加密的偏移大小和加密的大小。我们可以使用entry高低16位来分别存储着两个值。即可解决该问题。