ELF symbol table field st_other support,
[oota-llvm.git] / include / llvm / Support / ELF.h
index 55f5d58d11a1ca65c58d4653410e8bccb15ddea9..62f5f32899619af65f402013f469968f89924489 100644 (file)
@@ -28,20 +28,18 @@ namespace llvm {
 namespace ELF {
 
 typedef uint32_t Elf32_Addr; // Program address
-typedef uint16_t Elf32_Half;
 typedef uint32_t Elf32_Off;  // File offset
-typedef int32_t  Elf32_Sword;
+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 int32_t  Elf64_Shalf;
-typedef int32_t  Elf64_Sword;
+typedef uint16_t Elf64_Half;
 typedef uint32_t Elf64_Word;
-typedef int64_t  Elf64_Sxword;
+typedef int32_t  Elf64_Sword;
 typedef uint64_t Elf64_Xword;
-typedef uint32_t Elf64_Half;
-typedef uint16_t Elf64_Quarter;
+typedef int64_t  Elf64_Sxword;
 
 // Object file magic string.
 static const char ElfMagic[] = { 0x7f, 'E', 'L', 'F', '\0' };
@@ -87,19 +85,19 @@ struct Elf32_Ehdr {
 // types (see above).
 struct Elf64_Ehdr {
   unsigned char e_ident[EI_NIDENT];
-  Elf64_Quarter e_type;
-  Elf64_Quarter e_machine;
-  Elf64_Half    e_version;
+  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_Half    e_flags;
-  Elf64_Quarter e_ehsize;
-  Elf64_Quarter e_phentsize;
-  Elf64_Quarter e_phnum;
-  Elf64_Quarter e_shentsize;
-  Elf64_Quarter e_shnum;
-  Elf64_Quarter e_shstrndx;
+  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;
   }
@@ -126,22 +124,171 @@ enum {
 
 // 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_PPC = 20,      // PowerPC
-  EM_PPC64 = 21,    // PowerPC64
-  EM_ARM = 40,      // ARM
-  EM_ALPHA = 41,    // DEC Alpha
-  EM_SPARCV9 = 43,  // SPARC V9
-  EM_X86_64 = 62,   // AMD64
-  EM_MBLAZE = 47787 // Xilinx MicroBlaze
+  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_MICROBLAZE    = 189, // Xilinx MicroBlaze 32-bit RISC soft processor core
+  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)
+  EM_MBLAZE        = 47787 // Xilinx MicroBlaze
 };
 
 // Object file classes.
@@ -211,11 +358,17 @@ enum {
   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_TLSDESC    = 36,
+  R_X86_64_IRELATIVE  = 37
 };
 
 // i386 relocations.
@@ -290,6 +443,159 @@ enum {
   R_MICROBLAZE_COPY           = 21
 };
 
+// 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_REL32                 = 26,
+  R_PPC_TPREL16_LO            = 70,
+  R_PPC_TPREL16_HA            = 72
+};
+
+// ELF Relocation types for PPC64
+enum {
+  R_PPC64_ADDR32              = 1,
+  R_PPC64_ADDR16_LO           = 4,
+  R_PPC64_ADDR16_HI           = 5,
+  R_PPC64_ADDR14              = 7,
+  R_PPC64_REL24               = 10,
+  R_PPC64_REL32               = 26,
+  R_PPC64_ADDR64              = 38,
+  R_PPC64_ADDR16_HIGHER       = 39,
+  R_PPC64_ADDR16_HIGHEST      = 41,
+  R_PPC64_REL64               = 44,
+  R_PPC64_TOC16               = 47,
+  R_PPC64_TOC16_LO            = 48,
+  R_PPC64_TOC16_HA            = 50,
+  R_PPC64_TOC                 = 51,
+  R_PPC64_TOC16_DS            = 63,
+  R_PPC64_TOC16_LO_DS         = 64,
+  R_PPC64_TLS                 = 67,
+  R_PPC64_DTPREL16_LO         = 75,
+  R_PPC64_DTPREL16_HA         = 77,
+  R_PPC64_GOT_TLSGD16_LO      = 80,
+  R_PPC64_GOT_TLSGD16_HA      = 82,
+  R_PPC64_GOT_TLSLD16_LO      = 84,
+  R_PPC64_GOT_TLSLD16_HA      = 86,
+  R_PPC64_GOT_TPREL16_LO_DS   = 88,
+  R_PPC64_GOT_TPREL16_HA      = 90,
+  R_PPC64_TLSGD               = 107,
+  R_PPC64_TLSLD               = 108
+};
+
+// 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 {
+  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.
 
@@ -427,7 +733,207 @@ enum {
   R_ARM_THM_TLS_DESCSEQ32     = 0x82
 };
 
+// Mips Specific e_flags
+enum {
+  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
+  //ARCH_ASE
+  EF_MIPS_MICROMIPS = 0x02000000, // microMIPS
+  //ARCH
+  EF_MIPS_ARCH      = 0xf0000000, // Mask for applying EF_MIPS_ARCH_ variant
+  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
+};
+
+// 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_GOT               =  9,
+  R_MIPS_PC16              = 10,
+  R_MIPS_CALL16            = 11,
+  R_MIPS_GPREL32           = 12,
+  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_COPY              = 126,
+  R_MIPS_JUMP_SLOT         = 127,
+  R_MIPS_NUM               = 218
+};
 
+// Special values for the st_other field in the symbol table entry for MIPS.
+enum {
+  STO_MIPS_MICROMIPS       = 0x80 // MIPS Specific ISA for MicroMips
+};
+
+// 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
+};
 
 // Section header.
 struct Elf32_Shdr {
@@ -445,14 +951,14 @@ struct Elf32_Shdr {
 
 // Section header for ELF64 - same fields as ELF32, different types.
 struct Elf64_Shdr {
-  Elf64_Half  sh_name;
-  Elf64_Half  sh_type;
+  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_Half  sh_link;
-  Elf64_Half  sh_info;
+  Elf64_Word  sh_link;
+  Elf64_Word  sh_info;
   Elf64_Xword sh_addralign;
   Elf64_Xword sh_entsize;
 };
@@ -463,6 +969,8 @@ enum {
   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
@@ -483,14 +991,19 @@ enum {
   SHT_REL           = 9,  // Relocation entries; no explicit addends.
   SHT_SHLIB         = 10, // Reserved.
   SHT_DYNSYM        = 11, // Symbol table.
-  SHT_INIT_ARRAY    = 14, // Pointers to initialisation functions.
+  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, // Indicies for SHN_XINDEX entries.
+  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 architecture-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,
@@ -500,8 +1013,14 @@ enum {
   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_HIPROC        = 0x7fffffff, // Highest processor architecture-specific type.
+  SHT_MIPS_REGINFO        = 0x70000006, // Register usage information
+  SHT_MIPS_OPTIONS        = 0x7000000d, // General 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.
 };
@@ -551,8 +1070,26 @@ enum {
   /// 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
+  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,
+
+  // Do not strip this section. FIXME: We need target specific SHF_ enums.
+  SHF_MIPS_NOSTRIP = 0x8000000
 };
 
 // Section Group Flags
@@ -587,7 +1124,7 @@ 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 table index) it's defined in
+  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
 
@@ -613,6 +1150,8 @@ 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
 };
@@ -624,8 +1163,11 @@ enum {
   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 uninitialised common block
+  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
 };
@@ -637,6 +1179,11 @@ enum {
   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)
@@ -677,14 +1224,14 @@ struct Elf64_Rel {
 
   // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
   // and ELF64_R_INFO macros defined in the ELF specification:
-  Elf64_Xword getSymbol() const { return (r_info >> 32); }
-  unsigned char getType() const {
-    return (unsigned char) (r_info & 0xffffffffL);
+  Elf64_Word getSymbol() const { return (r_info >> 32); }
+  Elf64_Word getType() const {
+    return (Elf64_Word) (r_info & 0xffffffffL);
   }
-  void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); }
-  void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
-  void setSymbolAndType(Elf64_Xword s, unsigned char t) {
-    r_info = (s << 32) + (t&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);
   }
 };
 
@@ -696,14 +1243,14 @@ struct Elf64_Rela {
 
   // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
   // and ELF64_R_INFO macros defined in the ELF specification:
-  Elf64_Xword getSymbol() const { return (r_info >> 32); }
-  unsigned char getType() const {
-    return (unsigned char) (r_info & 0xffffffffL);
+  Elf64_Word getSymbol() const { return (r_info >> 32); }
+  Elf64_Word getType() const {
+    return (Elf64_Word) (r_info & 0xffffffffL);
   }
-  void setSymbol(Elf64_Xword s) { setSymbolAndType(s, getType()); }
-  void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
-  void setSymbolAndType(Elf64_Xword s, unsigned char t) {
-    r_info = (s << 32) + (t&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);
   }
 };
 
@@ -725,7 +1272,7 @@ struct Elf64_Phdr {
   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 address of beginning of segment (OS-specific)
+  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
@@ -740,8 +1287,26 @@ enum {
   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.
+  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
 };
 
 // Segment flag bits.
@@ -749,7 +1314,8 @@ enum {
   PF_X        = 1,         // Execute
   PF_W        = 2,         // Write
   PF_R        = 4,         // Read
-  PF_MASKPROC = 0xf0000000 // Unspecified
+  PF_MASKOS   = 0x0ff00000,// Bits for operating system-specific semantics.
+  PF_MASKPROC = 0xf0000000 // Bits for processor-specific semantics.
 };
 
 // Dynamic table entry for ELF32.
@@ -798,17 +1364,91 @@ enum {
   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 segements.
+  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_HIPROC       = 0x7FFFFFFF, // End of processor specific tags.
+
+  DT_RELACOUNT    = 0x6FFFFFF9, // ELF32_Rela count.
+  DT_RELCOUNT     = 0x6FFFFFFA, // ELF32_Rel count.
+
+  DT_FLAGS_1      = 0X6FFFFFFB, // Flags_1.
+  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.
+};
+
+// 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.
+};
+
+// 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
 };
 
 } // end namespace ELF