// This header contains common, non-processor-specific data structures and
// constants for the ELF file format.
//
-// The details of the ELF32 bits in this file are largely based on
-// the Tool Interface Standard (TIS) Executable and Linking Format
-// (ELF) Specification Version 1.2, May 1995. The ELF64 stuff is not
-// standardized, as far as I can tell. It was largely based on information
-// I found in OpenBSD header files.
+// The details of the ELF32 bits in this file are largely based on the Tool
+// Interface Standard (TIS) Executable and Linking Format (ELF) Specification
+// Version 1.2, May 1995. The ELF64 stuff is based on ELF-64 Object File Format
+// Version 1.5, Draft 2, May 1998 as well as OpenBSD header files.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_SUPPORT_ELF_H
#define LLVM_SUPPORT_ELF_H
-#include "llvm/System/DataTypes.h"
+#include "llvm/Support/DataTypes.h"
#include <cstring>
namespace llvm {
// Object file magic string.
static const 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.
+};
+
struct Elf32_Ehdr {
- unsigned char e_ident[16]; // ELF Identification bytes
+ 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_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;
+ bool checkMagic() const {
+ return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0;
}
- unsigned char getFileClass () const { return e_ident[4]; }
- unsigned char getDataEncoding () { return e_ident[5]; }
+ 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[16];
+ unsigned char e_ident[EI_NIDENT];
Elf64_Quarter e_type;
Elf64_Quarter e_machine;
Elf64_Half e_version;
Elf64_Quarter e_shentsize;
Elf64_Quarter e_shnum;
Elf64_Quarter 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
// 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_ARM = 40, // ARM
- EM_ALPHA = 41, // DEC Alpha
- EM_SPARCV9 = 43, // SPARC V9
- EM_X86_64 = 62 // AMD64
+ 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
};
// Object file classes.
// Object file byte orderings.
enum {
+ ELFDATANONE = 0, // Invalid data encoding.
ELFDATA2LSB = 1, // Little-endian object file
ELFDATA2MSB = 2 // Big-endian object file
};
R_X86_64_TLSDESC = 36
};
+// 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
+};
+
+// MBlaze relocations.
+enum {
+ R_MICROBLAZE_NONE = 0,
+ R_MICROBLAZE_32 = 1,
+ R_MICROBLAZE_32_PCREL = 2,
+ R_MICROBLAZE_64_PCREL = 3,
+ R_MICROBLAZE_32_PCREL_LO = 4,
+ R_MICROBLAZE_64 = 5,
+ R_MICROBLAZE_32_LO = 6,
+ R_MICROBLAZE_SRO32 = 7,
+ R_MICROBLAZE_SRW32 = 8,
+ R_MICROBLAZE_64_NONE = 9,
+ R_MICROBLAZE_32_SYM_OP_SYM = 10,
+ R_MICROBLAZE_GNU_VTINHERIT = 11,
+ R_MICROBLAZE_GNU_VTENTRY = 12,
+ R_MICROBLAZE_GOTPC_64 = 13,
+ R_MICROBLAZE_GOT_64 = 14,
+ R_MICROBLAZE_PLT_64 = 15,
+ R_MICROBLAZE_REL = 16,
+ R_MICROBLAZE_JUMP_SLOT = 17,
+ R_MICROBLAZE_GLOB_DAT = 18,
+ R_MICROBLAZE_GOTOFF_64 = 19,
+ R_MICROBLAZE_GOTOFF_32 = 20,
+ R_MICROBLAZE_COPY = 21
+};
+
+// 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
+};
+
+
+
// Section header.
struct Elf32_Shdr {
Elf32_Word sh_name; // Section name (index into string table)
SHN_HIPROC = 0xff1f, // Highest processor-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 {
- 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_LOPROC = 0x70000000, // Lowest processor architecture-specific type.
- SHT_HIPROC = 0x7fffffff, // Highest processor architecture-specific type.
- SHT_LOUSER = 0x80000000, // Lowest type reserved for applications.
- SHT_HIUSER = 0xffffffff // Highest type reserved for applications.
+ 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 initialisation 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_LOOS = 0x60000000, // Lowest operating system-specific type.
+ SHT_HIOS = 0x6fffffff, // Highest operating system-specific type.
+ SHT_LOPROC = 0x70000000, // Lowest processor architecture-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_HIPROC = 0x7fffffff, // Highest processor architecture-specific type.
+ SHT_LOUSER = 0x80000000, // Lowest type reserved for applications.
+ SHT_HIUSER = 0xffffffff // Highest type reserved for applications.
};
// Section flags.
SHF_MASKPROC = 0xf0000000 // Bits indicating processor-specific flags.
};
-// Symbol table entries.
+// Section Group Flags
+enum {
+ 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
// 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) {
+ 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);
+ }
+};
+
+// 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 table 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
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_TLS = 6, // Thread local data object
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
+};
+
// Relocation entry, without explicit addend.
struct Elf32_Rel {
Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr)
// 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) {
+ 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.
// 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) {
+ 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.
// 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 {
+ Elf64_Xword getSymbol() const { return (r_info >> 32); }
+ unsigned char getType() const {
return (unsigned char) (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) {
+ 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);
- };
+ }
};
// Relocation entry with explicit addend.
// 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 {
+ Elf64_Xword getSymbol() const { return (r_info >> 32); }
+ unsigned char getType() const {
return (unsigned char) (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) {
+ 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);
- };
+ }
};
-// Program header.
+// 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_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 address 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.
PF_MASKPROC = 0xf0000000 // Unspecified
};
+// 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 segements.
+ 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_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.
+};
+
} // end namespace ELF
} // end namespace llvm
projects / oota-llvm.git / blobdiff