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Support/ELF.h
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1 //===-- llvm/Support/ELF.h - ELF constants and data structures --*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This header contains common, non-processor-specific data structures and
11 // constants for the ELF file format.
12 //
13 // The details of the ELF32 bits in this file are largely based on the Tool
14 // Interface Standard (TIS) Executable and Linking Format (ELF) Specification
15 // Version 1.2, May 1995. The ELF64 stuff is based on ELF-64 Object File Format
16 // Version 1.5, Draft 2, May 1998 as well as OpenBSD header files.
17 //
18 //===----------------------------------------------------------------------===//
19 
20 #ifndef LLVM_SUPPORT_ELF_H
21 #define LLVM_SUPPORT_ELF_H
22 
23 #include "llvm/Support/Compiler.h"
24 #include "llvm/Support/DataTypes.h"
25 #include <cstring>
26 
27 namespace llvm {
28 
29 namespace ELF {
30 
31 typedef uint32_t Elf32_Addr; // Program address
32 typedef uint32_t Elf32_Off; // File offset
33 typedef uint16_t Elf32_Half;
34 typedef uint32_t Elf32_Word;
35 typedef int32_t Elf32_Sword;
36 
37 typedef uint64_t Elf64_Addr;
38 typedef uint64_t Elf64_Off;
39 typedef uint16_t Elf64_Half;
40 typedef uint32_t Elf64_Word;
41 typedef int32_t Elf64_Sword;
42 typedef uint64_t Elf64_Xword;
43 typedef int64_t Elf64_Sxword;
44 
45 // Object file magic string.
46 static const char ElfMagic[] = { 0x7f, 'E', 'L', 'F', '\0' };
47 
48 // e_ident size and indices.
49 enum {
50  EI_MAG0 = 0, // File identification index.
51  EI_MAG1 = 1, // File identification index.
52  EI_MAG2 = 2, // File identification index.
53  EI_MAG3 = 3, // File identification index.
54  EI_CLASS = 4, // File class.
55  EI_DATA = 5, // Data encoding.
56  EI_VERSION = 6, // File version.
57  EI_OSABI = 7, // OS/ABI identification.
58  EI_ABIVERSION = 8, // ABI version.
59  EI_PAD = 9, // Start of padding bytes.
60  EI_NIDENT = 16 // Number of bytes in e_ident.
61 };
62 
63 struct Elf32_Ehdr {
64  unsigned char e_ident[EI_NIDENT]; // ELF Identification bytes
65  Elf32_Half e_type; // Type of file (see ET_* below)
66  Elf32_Half e_machine; // Required architecture for this file (see EM_*)
67  Elf32_Word e_version; // Must be equal to 1
68  Elf32_Addr e_entry; // Address to jump to in order to start program
69  Elf32_Off e_phoff; // Program header table's file offset, in bytes
70  Elf32_Off e_shoff; // Section header table's file offset, in bytes
71  Elf32_Word e_flags; // Processor-specific flags
72  Elf32_Half e_ehsize; // Size of ELF header, in bytes
73  Elf32_Half e_phentsize; // Size of an entry in the program header table
74  Elf32_Half e_phnum; // Number of entries in the program header table
75  Elf32_Half e_shentsize; // Size of an entry in the section header table
76  Elf32_Half e_shnum; // Number of entries in the section header table
77  Elf32_Half e_shstrndx; // Sect hdr table index of sect name string table
78  bool checkMagic() const {
79  return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0;
80  }
81  unsigned char getFileClass() const { return e_ident[EI_CLASS]; }
82  unsigned char getDataEncoding() const { return e_ident[EI_DATA]; }
83 };
84 
85 // 64-bit ELF header. Fields are the same as for ELF32, but with different
86 // types (see above).
87 struct Elf64_Ehdr {
88  unsigned char e_ident[EI_NIDENT];
102  bool checkMagic() const {
103  return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0;
104  }
105  unsigned char getFileClass() const { return e_ident[EI_CLASS]; }
106  unsigned char getDataEncoding() const { return e_ident[EI_DATA]; }
107 };
108 
109 // File types
110 enum {
111  ET_NONE = 0, // No file type
112  ET_REL = 1, // Relocatable file
113  ET_EXEC = 2, // Executable file
114  ET_DYN = 3, // Shared object file
115  ET_CORE = 4, // Core file
116  ET_LOPROC = 0xff00, // Beginning of processor-specific codes
117  ET_HIPROC = 0xffff // Processor-specific
118 };
119 
120 // Versioning
121 enum {
122  EV_NONE = 0,
124 };
125 
126 // Machine architectures
127 enum {
128  EM_NONE = 0, // No machine
129  EM_M32 = 1, // AT&T WE 32100
130  EM_SPARC = 2, // SPARC
131  EM_386 = 3, // Intel 386
132  EM_68K = 4, // Motorola 68000
133  EM_88K = 5, // Motorola 88000
134  EM_486 = 6, // Intel 486 (deprecated)
135  EM_860 = 7, // Intel 80860
136  EM_MIPS = 8, // MIPS R3000
137  EM_S370 = 9, // IBM System/370
138  EM_MIPS_RS3_LE = 10, // MIPS RS3000 Little-endian
139  EM_PARISC = 15, // Hewlett-Packard PA-RISC
140  EM_VPP500 = 17, // Fujitsu VPP500
141  EM_SPARC32PLUS = 18, // Enhanced instruction set SPARC
142  EM_960 = 19, // Intel 80960
143  EM_PPC = 20, // PowerPC
144  EM_PPC64 = 21, // PowerPC64
145  EM_S390 = 22, // IBM System/390
146  EM_SPU = 23, // IBM SPU/SPC
147  EM_V800 = 36, // NEC V800
148  EM_FR20 = 37, // Fujitsu FR20
149  EM_RH32 = 38, // TRW RH-32
150  EM_RCE = 39, // Motorola RCE
151  EM_ARM = 40, // ARM
152  EM_ALPHA = 41, // DEC Alpha
153  EM_SH = 42, // Hitachi SH
154  EM_SPARCV9 = 43, // SPARC V9
155  EM_TRICORE = 44, // Siemens TriCore
156  EM_ARC = 45, // Argonaut RISC Core
157  EM_H8_300 = 46, // Hitachi H8/300
158  EM_H8_300H = 47, // Hitachi H8/300H
159  EM_H8S = 48, // Hitachi H8S
160  EM_H8_500 = 49, // Hitachi H8/500
161  EM_IA_64 = 50, // Intel IA-64 processor architecture
162  EM_MIPS_X = 51, // Stanford MIPS-X
163  EM_COLDFIRE = 52, // Motorola ColdFire
164  EM_68HC12 = 53, // Motorola M68HC12
165  EM_MMA = 54, // Fujitsu MMA Multimedia Accelerator
166  EM_PCP = 55, // Siemens PCP
167  EM_NCPU = 56, // Sony nCPU embedded RISC processor
168  EM_NDR1 = 57, // Denso NDR1 microprocessor
169  EM_STARCORE = 58, // Motorola Star*Core processor
170  EM_ME16 = 59, // Toyota ME16 processor
171  EM_ST100 = 60, // STMicroelectronics ST100 processor
172  EM_TINYJ = 61, // Advanced Logic Corp. TinyJ embedded processor family
173  EM_X86_64 = 62, // AMD x86-64 architecture
174  EM_PDSP = 63, // Sony DSP Processor
175  EM_PDP10 = 64, // Digital Equipment Corp. PDP-10
176  EM_PDP11 = 65, // Digital Equipment Corp. PDP-11
177  EM_FX66 = 66, // Siemens FX66 microcontroller
178  EM_ST9PLUS = 67, // STMicroelectronics ST9+ 8/16 bit microcontroller
179  EM_ST7 = 68, // STMicroelectronics ST7 8-bit microcontroller
180  EM_68HC16 = 69, // Motorola MC68HC16 Microcontroller
181  EM_68HC11 = 70, // Motorola MC68HC11 Microcontroller
182  EM_68HC08 = 71, // Motorola MC68HC08 Microcontroller
183  EM_68HC05 = 72, // Motorola MC68HC05 Microcontroller
184  EM_SVX = 73, // Silicon Graphics SVx
185  EM_ST19 = 74, // STMicroelectronics ST19 8-bit microcontroller
186  EM_VAX = 75, // Digital VAX
187  EM_CRIS = 76, // Axis Communications 32-bit embedded processor
188  EM_JAVELIN = 77, // Infineon Technologies 32-bit embedded processor
189  EM_FIREPATH = 78, // Element 14 64-bit DSP Processor
190  EM_ZSP = 79, // LSI Logic 16-bit DSP Processor
191  EM_MMIX = 80, // Donald Knuth's educational 64-bit processor
192  EM_HUANY = 81, // Harvard University machine-independent object files
193  EM_PRISM = 82, // SiTera Prism
194  EM_AVR = 83, // Atmel AVR 8-bit microcontroller
195  EM_FR30 = 84, // Fujitsu FR30
196  EM_D10V = 85, // Mitsubishi D10V
197  EM_D30V = 86, // Mitsubishi D30V
198  EM_V850 = 87, // NEC v850
199  EM_M32R = 88, // Mitsubishi M32R
200  EM_MN10300 = 89, // Matsushita MN10300
201  EM_MN10200 = 90, // Matsushita MN10200
202  EM_PJ = 91, // picoJava
203  EM_OPENRISC = 92, // OpenRISC 32-bit embedded processor
204  EM_ARC_COMPACT = 93, // ARC International ARCompact processor (old
205  // spelling/synonym: EM_ARC_A5)
206  EM_XTENSA = 94, // Tensilica Xtensa Architecture
207  EM_VIDEOCORE = 95, // Alphamosaic VideoCore processor
208  EM_TMM_GPP = 96, // Thompson Multimedia General Purpose Processor
209  EM_NS32K = 97, // National Semiconductor 32000 series
210  EM_TPC = 98, // Tenor Network TPC processor
211  EM_SNP1K = 99, // Trebia SNP 1000 processor
212  EM_ST200 = 100, // STMicroelectronics (www.st.com) ST200
213  EM_IP2K = 101, // Ubicom IP2xxx microcontroller family
214  EM_MAX = 102, // MAX Processor
215  EM_CR = 103, // National Semiconductor CompactRISC microprocessor
216  EM_F2MC16 = 104, // Fujitsu F2MC16
217  EM_MSP430 = 105, // Texas Instruments embedded microcontroller msp430
218  EM_BLACKFIN = 106, // Analog Devices Blackfin (DSP) processor
219  EM_SE_C33 = 107, // S1C33 Family of Seiko Epson processors
220  EM_SEP = 108, // Sharp embedded microprocessor
221  EM_ARCA = 109, // Arca RISC Microprocessor
222  EM_UNICORE = 110, // Microprocessor series from PKU-Unity Ltd. and MPRC
223  // of Peking University
224  EM_EXCESS = 111, // eXcess: 16/32/64-bit configurable embedded CPU
225  EM_DXP = 112, // Icera Semiconductor Inc. Deep Execution Processor
226  EM_ALTERA_NIOS2 = 113, // Altera Nios II soft-core processor
227  EM_CRX = 114, // National Semiconductor CompactRISC CRX
228  EM_XGATE = 115, // Motorola XGATE embedded processor
229  EM_C166 = 116, // Infineon C16x/XC16x processor
230  EM_M16C = 117, // Renesas M16C series microprocessors
231  EM_DSPIC30F = 118, // Microchip Technology dsPIC30F Digital Signal
232  // Controller
233  EM_CE = 119, // Freescale Communication Engine RISC core
234  EM_M32C = 120, // Renesas M32C series microprocessors
235  EM_TSK3000 = 131, // Altium TSK3000 core
236  EM_RS08 = 132, // Freescale RS08 embedded processor
237  EM_SHARC = 133, // Analog Devices SHARC family of 32-bit DSP
238  // processors
239  EM_ECOG2 = 134, // Cyan Technology eCOG2 microprocessor
240  EM_SCORE7 = 135, // Sunplus S+core7 RISC processor
241  EM_DSP24 = 136, // New Japan Radio (NJR) 24-bit DSP Processor
242  EM_VIDEOCORE3 = 137, // Broadcom VideoCore III processor
243  EM_LATTICEMICO32 = 138, // RISC processor for Lattice FPGA architecture
244  EM_SE_C17 = 139, // Seiko Epson C17 family
245  EM_TI_C6000 = 140, // The Texas Instruments TMS320C6000 DSP family
246  EM_TI_C2000 = 141, // The Texas Instruments TMS320C2000 DSP family
247  EM_TI_C5500 = 142, // The Texas Instruments TMS320C55x DSP family
248  EM_MMDSP_PLUS = 160, // STMicroelectronics 64bit VLIW Data Signal Processor
249  EM_CYPRESS_M8C = 161, // Cypress M8C microprocessor
250  EM_R32C = 162, // Renesas R32C series microprocessors
251  EM_TRIMEDIA = 163, // NXP Semiconductors TriMedia architecture family
252  EM_HEXAGON = 164, // Qualcomm Hexagon processor
253  EM_8051 = 165, // Intel 8051 and variants
254  EM_STXP7X = 166, // STMicroelectronics STxP7x family of configurable
255  // and extensible RISC processors
256  EM_NDS32 = 167, // Andes Technology compact code size embedded RISC
257  // processor family
258  EM_ECOG1 = 168, // Cyan Technology eCOG1X family
259  EM_ECOG1X = 168, // Cyan Technology eCOG1X family
260  EM_MAXQ30 = 169, // Dallas Semiconductor MAXQ30 Core Micro-controllers
261  EM_XIMO16 = 170, // New Japan Radio (NJR) 16-bit DSP Processor
262  EM_MANIK = 171, // M2000 Reconfigurable RISC Microprocessor
263  EM_CRAYNV2 = 172, // Cray Inc. NV2 vector architecture
264  EM_RX = 173, // Renesas RX family
265  EM_METAG = 174, // Imagination Technologies META processor
266  // architecture
267  EM_MCST_ELBRUS = 175, // MCST Elbrus general purpose hardware architecture
268  EM_ECOG16 = 176, // Cyan Technology eCOG16 family
269  EM_CR16 = 177, // National Semiconductor CompactRISC CR16 16-bit
270  // microprocessor
271  EM_ETPU = 178, // Freescale Extended Time Processing Unit
272  EM_SLE9X = 179, // Infineon Technologies SLE9X core
273  EM_L10M = 180, // Intel L10M
274  EM_K10M = 181, // Intel K10M
275  EM_AARCH64 = 183, // ARM AArch64
276  EM_AVR32 = 185, // Atmel Corporation 32-bit microprocessor family
277  EM_STM8 = 186, // STMicroeletronics STM8 8-bit microcontroller
278  EM_TILE64 = 187, // Tilera TILE64 multicore architecture family
279  EM_TILEPRO = 188, // Tilera TILEPro multicore architecture family
280  EM_CUDA = 190, // NVIDIA CUDA architecture
281  EM_TILEGX = 191, // Tilera TILE-Gx multicore architecture family
282  EM_CLOUDSHIELD = 192, // CloudShield architecture family
283  EM_COREA_1ST = 193, // KIPO-KAIST Core-A 1st generation processor family
284  EM_COREA_2ND = 194, // KIPO-KAIST Core-A 2nd generation processor family
285  EM_ARC_COMPACT2 = 195, // Synopsys ARCompact V2
286  EM_OPEN8 = 196, // Open8 8-bit RISC soft processor core
287  EM_RL78 = 197, // Renesas RL78 family
288  EM_VIDEOCORE5 = 198, // Broadcom VideoCore V processor
289  EM_78KOR = 199, // Renesas 78KOR family
290  EM_56800EX = 200 // Freescale 56800EX Digital Signal Controller (DSC)
291 };
292 
293 // Object file classes.
294 enum {
296  ELFCLASS32 = 1, // 32-bit object file
297  ELFCLASS64 = 2 // 64-bit object file
298 };
299 
300 // Object file byte orderings.
301 enum {
302  ELFDATANONE = 0, // Invalid data encoding.
303  ELFDATA2LSB = 1, // Little-endian object file
304  ELFDATA2MSB = 2 // Big-endian object file
305 };
306 
307 // OS ABI identification.
308 enum {
309  ELFOSABI_NONE = 0, // UNIX System V ABI
310  ELFOSABI_HPUX = 1, // HP-UX operating system
311  ELFOSABI_NETBSD = 2, // NetBSD
312  ELFOSABI_GNU = 3, // GNU/Linux
313  ELFOSABI_LINUX = 3, // Historical alias for ELFOSABI_GNU.
314  ELFOSABI_HURD = 4, // GNU/Hurd
315  ELFOSABI_SOLARIS = 6, // Solaris
316  ELFOSABI_AIX = 7, // AIX
317  ELFOSABI_IRIX = 8, // IRIX
318  ELFOSABI_FREEBSD = 9, // FreeBSD
319  ELFOSABI_TRU64 = 10, // TRU64 UNIX
320  ELFOSABI_MODESTO = 11, // Novell Modesto
321  ELFOSABI_OPENBSD = 12, // OpenBSD
322  ELFOSABI_OPENVMS = 13, // OpenVMS
323  ELFOSABI_NSK = 14, // Hewlett-Packard Non-Stop Kernel
324  ELFOSABI_AROS = 15, // AROS
325  ELFOSABI_FENIXOS = 16, // FenixOS
326  ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000
327  ELFOSABI_C6000_LINUX = 65, // Linux TMS320C6000
328  ELFOSABI_ARM = 97, // ARM
329  ELFOSABI_STANDALONE = 255 // Standalone (embedded) application
330 };
331 
332 // X86_64 relocations.
333 enum {
372 };
373 
374 // i386 relocations.
375 // TODO: this is just a subset
376 enum {
378  R_386_32 = 1,
395  R_386_16 = 20,
397  R_386_8 = 22,
398  R_386_PC8 = 23,
418 };
419 
420 // ELF Relocation types for PPC32
421 enum {
422  R_PPC_NONE = 0, /* No relocation. */
441  R_PPC_TLS = 67,
471  R_PPC_REL16 = 249,
475 };
476 
477 // ELF Relocation types for PPC64
478 enum {
561 };
562 
563 // ELF Relocation types for AArch64
564 
565 enum {
566  R_AARCH64_NONE = 0x100,
567 
574 
585 
591 
596 
600 
602 
605 
622 
628 
645 
649 
651 };
652 
653 // ARM Specific e_flags
654 enum LLVM_ENUM_INT_TYPE(unsigned) {
655  EF_ARM_SOFT_FLOAT = 0x00000200U,
656  EF_ARM_VFP_FLOAT = 0x00000400U,
657  EF_ARM_EABI_UNKNOWN = 0x00000000U,
658  EF_ARM_EABI_VER1 = 0x01000000U,
659  EF_ARM_EABI_VER2 = 0x02000000U,
660  EF_ARM_EABI_VER3 = 0x03000000U,
661  EF_ARM_EABI_VER4 = 0x04000000U,
662  EF_ARM_EABI_VER5 = 0x05000000U,
663  EF_ARM_EABIMASK = 0xFF000000U
664 };
665 
666 // ELF Relocation types for ARM
667 // Meets 2.08 ABI Specs.
668 
669 enum {
670  R_ARM_NONE = 0x00,
671  R_ARM_PC24 = 0x01,
672  R_ARM_ABS32 = 0x02,
673  R_ARM_REL32 = 0x03,
675  R_ARM_ABS16 = 0x05,
676  R_ARM_ABS12 = 0x06,
678  R_ARM_ABS8 = 0x08,
685  R_ARM_XPC25 = 0x0f,
690  R_ARM_COPY = 0x14,
697  R_ARM_PLT32 = 0x1b,
698  R_ARM_CALL = 0x1c,
699  R_ARM_JUMP24 = 0x1d,
710  R_ARM_V4BX = 0x28,
712  R_ARM_PREL31 = 0x2a,
798  R_ARM_ME_TOO = 0x80,
801 };
802 
803 // Mips Specific e_flags
804 enum LLVM_ENUM_INT_TYPE(unsigned) {
805  EF_MIPS_NOREORDER = 0x00000001, // Don't reorder instructions
806  EF_MIPS_PIC = 0x00000002, // Position independent code
807  EF_MIPS_CPIC = 0x00000004, // Call object with Position independent code
808  EF_MIPS_ABI_O32 = 0x00001000, // This file follows the first MIPS 32 bit ABI
809 
810  //ARCH_ASE
811  EF_MIPS_MICROMIPS = 0x02000000, // microMIPS
812  EF_MIPS_ARCH_ASE_M16 =
813  0x04000000, // Has Mips-16 ISA extensions
814  //ARCH
815  EF_MIPS_ARCH_1 = 0x00000000, // MIPS1 instruction set
816  EF_MIPS_ARCH_2 = 0x10000000, // MIPS2 instruction set
817  EF_MIPS_ARCH_3 = 0x20000000, // MIPS3 instruction set
818  EF_MIPS_ARCH_4 = 0x30000000, // MIPS4 instruction set
819  EF_MIPS_ARCH_5 = 0x40000000, // MIPS5 instruction set
820  EF_MIPS_ARCH_32 = 0x50000000, // MIPS32 instruction set per linux not elf.h
821  EF_MIPS_ARCH_64 = 0x60000000, // MIPS64 instruction set per linux not elf.h
822  EF_MIPS_ARCH_32R2 = 0x70000000, // mips32r2
823  EF_MIPS_ARCH_64R2 = 0x80000000, // mips64r2
824  EF_MIPS_ARCH = 0xf0000000 // Mask for applying EF_MIPS_ARCH_ variant
825 };
826 
827 // ELF Relocation types for Mips
828 // .
829 enum {
848  R_MIPS_64 = 18,
882  R_MIPS_COPY = 126,
898 };
899 
900 // Special values for the st_other field in the symbol table entry for MIPS.
901 enum {
902  STO_MIPS_MICROMIPS = 0x80 // MIPS Specific ISA for MicroMips
903 };
904 
905 // Hexagon Specific e_flags
906 // Release 5 ABI
907 enum {
908  // Object processor version flags, bits[3:0]
909  EF_HEXAGON_MACH_V2 = 0x00000001, // Hexagon V2
910  EF_HEXAGON_MACH_V3 = 0x00000002, // Hexagon V3
911  EF_HEXAGON_MACH_V4 = 0x00000003, // Hexagon V4
912  EF_HEXAGON_MACH_V5 = 0x00000004, // Hexagon V5
913 
914  // Highest ISA version flags
915  EF_HEXAGON_ISA_MACH = 0x00000000, // Same as specified in bits[3:0]
916  // of e_flags
917  EF_HEXAGON_ISA_V2 = 0x00000010, // Hexagon V2 ISA
918  EF_HEXAGON_ISA_V3 = 0x00000020, // Hexagon V3 ISA
919  EF_HEXAGON_ISA_V4 = 0x00000030, // Hexagon V4 ISA
920  EF_HEXAGON_ISA_V5 = 0x00000040 // Hexagon V5 ISA
921 };
922 
923 // Hexagon specific Section indexes for common small data
924 // Release 5 ABI
925 enum {
926  SHN_HEXAGON_SCOMMON = 0xff00, // Other access sizes
927  SHN_HEXAGON_SCOMMON_1 = 0xff01, // Byte-sized access
928  SHN_HEXAGON_SCOMMON_2 = 0xff02, // Half-word-sized access
929  SHN_HEXAGON_SCOMMON_4 = 0xff03, // Word-sized access
930  SHN_HEXAGON_SCOMMON_8 = 0xff04 // Double-word-size access
931 };
932 
933 // ELF Relocation types for Hexagon
934 // Release 5 ABI
935 enum {
942  R_HEX_32 = 6,
943  R_HEX_16 = 7,
944  R_HEX_8 = 8,
963  R_HEX_9_X = 27,
964  R_HEX_8_X = 28,
965  R_HEX_7_X = 29,
966  R_HEX_6_X = 30,
1022 };
1023 
1024 // ELF Relocation types for S390/zSeries
1025 enum {
1027  R_390_8 = 1,
1048  R_390_64 = 22,
1083  R_390_20 = 57,
1088 };
1089 
1090 // Section header.
1091 struct Elf32_Shdr {
1092  Elf32_Word sh_name; // Section name (index into string table)
1093  Elf32_Word sh_type; // Section type (SHT_*)
1094  Elf32_Word sh_flags; // Section flags (SHF_*)
1095  Elf32_Addr sh_addr; // Address where section is to be loaded
1096  Elf32_Off sh_offset; // File offset of section data, in bytes
1097  Elf32_Word sh_size; // Size of section, in bytes
1098  Elf32_Word sh_link; // Section type-specific header table index link
1099  Elf32_Word sh_info; // Section type-specific extra information
1100  Elf32_Word sh_addralign; // Section address alignment
1101  Elf32_Word sh_entsize; // Size of records contained within the section
1102 };
1103 
1104 // Section header for ELF64 - same fields as ELF32, different types.
1105 struct Elf64_Shdr {
1116 };
1117 
1118 // Special section indices.
1119 enum {
1120  SHN_UNDEF = 0, // Undefined, missing, irrelevant, or meaningless
1121  SHN_LORESERVE = 0xff00, // Lowest reserved index
1122  SHN_LOPROC = 0xff00, // Lowest processor-specific index
1123  SHN_HIPROC = 0xff1f, // Highest processor-specific index
1124  SHN_LOOS = 0xff20, // Lowest operating system-specific index
1125  SHN_HIOS = 0xff3f, // Highest operating system-specific index
1126  SHN_ABS = 0xfff1, // Symbol has absolute value; does not need relocation
1127  SHN_COMMON = 0xfff2, // FORTRAN COMMON or C external global variables
1128  SHN_XINDEX = 0xffff, // Mark that the index is >= SHN_LORESERVE
1129  SHN_HIRESERVE = 0xffff // Highest reserved index
1130 };
1131 
1132 // Section types.
1133 enum LLVM_ENUM_INT_TYPE(unsigned) {
1134  SHT_NULL = 0, // No associated section (inactive entry).
1135  SHT_PROGBITS = 1, // Program-defined contents.
1136  SHT_SYMTAB = 2, // Symbol table.
1137  SHT_STRTAB = 3, // String table.
1138  SHT_RELA = 4, // Relocation entries; explicit addends.
1139  SHT_HASH = 5, // Symbol hash table.
1140  SHT_DYNAMIC = 6, // Information for dynamic linking.
1141  SHT_NOTE = 7, // Information about the file.
1142  SHT_NOBITS = 8, // Data occupies no space in the file.
1143  SHT_REL = 9, // Relocation entries; no explicit addends.
1144  SHT_SHLIB = 10, // Reserved.
1145  SHT_DYNSYM = 11, // Symbol table.
1146  SHT_INIT_ARRAY = 14, // Pointers to initialization functions.
1147  SHT_FINI_ARRAY = 15, // Pointers to termination functions.
1148  SHT_PREINIT_ARRAY = 16, // Pointers to pre-init functions.
1149  SHT_GROUP = 17, // Section group.
1150  SHT_SYMTAB_SHNDX = 18, // Indices for SHN_XINDEX entries.
1151  SHT_LOOS = 0x60000000, // Lowest operating system-specific type.
1152  SHT_GNU_ATTRIBUTES= 0x6ffffff5, // Object attributes.
1153  SHT_GNU_HASH = 0x6ffffff6, // GNU-style hash table.
1154  SHT_GNU_verdef = 0x6ffffffd, // GNU version definitions.
1155  SHT_GNU_verneed = 0x6ffffffe, // GNU version references.
1156  SHT_GNU_versym = 0x6fffffff, // GNU symbol versions table.
1157  SHT_HIOS = 0x6fffffff, // Highest operating system-specific type.
1158  SHT_LOPROC = 0x70000000, // Lowest processor arch-specific type.
1159  // Fixme: All this is duplicated in MCSectionELF. Why??
1160  // Exception Index table
1161  SHT_ARM_EXIDX = 0x70000001U,
1162  // BPABI DLL dynamic linking pre-emption map
1163  SHT_ARM_PREEMPTMAP = 0x70000002U,
1164  // Object file compatibility attributes
1165  SHT_ARM_ATTRIBUTES = 0x70000003U,
1166  SHT_ARM_DEBUGOVERLAY = 0x70000004U,
1167  SHT_ARM_OVERLAYSECTION = 0x70000005U,
1168  SHT_HEX_ORDERED = 0x70000000, // Link editor is to sort the entries in
1169  // this section based on their sizes
1170  SHT_X86_64_UNWIND = 0x70000001, // Unwind information
1171 
1172  SHT_MIPS_REGINFO = 0x70000006, // Register usage information
1173  SHT_MIPS_OPTIONS = 0x7000000d, // General options
1174 
1175  SHT_HIPROC = 0x7fffffff, // Highest processor arch-specific type.
1176  SHT_LOUSER = 0x80000000, // Lowest type reserved for applications.
1177  SHT_HIUSER = 0xffffffff // Highest type reserved for applications.
1178 };
1179 
1180 // Section flags.
1181 enum LLVM_ENUM_INT_TYPE(unsigned) {
1182  // Section data should be writable during execution.
1183  SHF_WRITE = 0x1,
1184 
1185  // Section occupies memory during program execution.
1186  SHF_ALLOC = 0x2,
1187 
1188  // Section contains executable machine instructions.
1189  SHF_EXECINSTR = 0x4,
1190 
1191  // The data in this section may be merged.
1192  SHF_MERGE = 0x10,
1193 
1194  // The data in this section is null-terminated strings.
1195  SHF_STRINGS = 0x20,
1196 
1197  // A field in this section holds a section header table index.
1198  SHF_INFO_LINK = 0x40U,
1199 
1200  // Adds special ordering requirements for link editors.
1201  SHF_LINK_ORDER = 0x80U,
1202 
1203  // This section requires special OS-specific processing to avoid incorrect
1204  // behavior.
1205  SHF_OS_NONCONFORMING = 0x100U,
1206 
1207  // This section is a member of a section group.
1208  SHF_GROUP = 0x200U,
1209 
1210  // This section holds Thread-Local Storage.
1211  SHF_TLS = 0x400U,
1212 
1213  // This section is excluded from the final executable or shared library.
1214  SHF_EXCLUDE = 0x80000000U,
1215 
1216  // Start of target-specific flags.
1217 
1218  /// XCORE_SHF_CP_SECTION - All sections with the "c" flag are grouped
1219  /// together by the linker to form the constant pool and the cp register is
1220  /// set to the start of the constant pool by the boot code.
1221  XCORE_SHF_CP_SECTION = 0x800U,
1222 
1223  /// XCORE_SHF_DP_SECTION - All sections with the "d" flag are grouped
1224  /// together by the linker to form the data section and the dp register is
1225  /// set to the start of the section by the boot code.
1226  XCORE_SHF_DP_SECTION = 0x1000U,
1227 
1228  SHF_MASKOS = 0x0ff00000,
1229 
1230  // Bits indicating processor-specific flags.
1231  SHF_MASKPROC = 0xf0000000,
1232 
1233  // If an object file section does not have this flag set, then it may not hold
1234  // more than 2GB and can be freely referred to in objects using smaller code
1235  // models. Otherwise, only objects using larger code models can refer to them.
1236  // For example, a medium code model object can refer to data in a section that
1237  // sets this flag besides being able to refer to data in a section that does
1238  // not set it; likewise, a small code model object can refer only to code in a
1239  // section that does not set this flag.
1240  SHF_X86_64_LARGE = 0x10000000,
1241 
1242  // All sections with the GPREL flag are grouped into a global data area
1243  // for faster accesses
1244  SHF_HEX_GPREL = 0x10000000,
1245 
1246  // Section contains text/data which may be replicated in other sections.
1247  // Linker must retain only one copy.
1248  SHF_MIPS_NODUPES = 0x01000000,
1249 
1250  // Linker must generate implicit hidden weak names.
1251  SHF_MIPS_NAMES = 0x02000000,
1252 
1253  // Section data local to process.
1254  SHF_MIPS_LOCAL = 0x04000000,
1255 
1256  // Do not strip this section.
1257  SHF_MIPS_NOSTRIP = 0x08000000,
1258 
1259  // Section must be part of global data area.
1260  SHF_MIPS_GPREL = 0x10000000,
1261 
1262  // This section should be merged.
1263  SHF_MIPS_MERGE = 0x20000000,
1264 
1265  // Address size to be inferred from section entry size.
1266  SHF_MIPS_ADDR = 0x40000000,
1267 
1268  // Section data is string data by default.
1269  SHF_MIPS_STRING = 0x80000000
1270 };
1271 
1272 // Section Group Flags
1273 enum LLVM_ENUM_INT_TYPE(unsigned) {
1274  GRP_COMDAT = 0x1,
1275  GRP_MASKOS = 0x0ff00000,
1276  GRP_MASKPROC = 0xf0000000
1277 };
1278 
1279 // Symbol table entries for ELF32.
1280 struct Elf32_Sym {
1281  Elf32_Word st_name; // Symbol name (index into string table)
1282  Elf32_Addr st_value; // Value or address associated with the symbol
1283  Elf32_Word st_size; // Size of the symbol
1284  unsigned char st_info; // Symbol's type and binding attributes
1285  unsigned char st_other; // Must be zero; reserved
1286  Elf32_Half st_shndx; // Which section (header table index) it's defined in
1287 
1288  // These accessors and mutators correspond to the ELF32_ST_BIND,
1289  // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
1290  unsigned char getBinding() const { return st_info >> 4; }
1291  unsigned char getType() const { return st_info & 0x0f; }
1292  void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
1293  void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
1294  void setBindingAndType(unsigned char b, unsigned char t) {
1295  st_info = (b << 4) + (t & 0x0f);
1296  }
1297 };
1298 
1299 // Symbol table entries for ELF64.
1300 struct Elf64_Sym {
1301  Elf64_Word st_name; // Symbol name (index into string table)
1302  unsigned char st_info; // Symbol's type and binding attributes
1303  unsigned char st_other; // Must be zero; reserved
1304  Elf64_Half st_shndx; // Which section (header tbl index) it's defined in
1305  Elf64_Addr st_value; // Value or address associated with the symbol
1306  Elf64_Xword st_size; // Size of the symbol
1307 
1308  // These accessors and mutators are identical to those defined for ELF32
1309  // symbol table entries.
1310  unsigned char getBinding() const { return st_info >> 4; }
1311  unsigned char getType() const { return st_info & 0x0f; }
1312  void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
1313  void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
1314  void setBindingAndType(unsigned char b, unsigned char t) {
1315  st_info = (b << 4) + (t & 0x0f);
1316  }
1317 };
1318 
1319 // The size (in bytes) of symbol table entries.
1320 enum {
1321  SYMENTRY_SIZE32 = 16, // 32-bit symbol entry size
1322  SYMENTRY_SIZE64 = 24 // 64-bit symbol entry size.
1323 };
1324 
1325 // Symbol bindings.
1326 enum {
1327  STB_LOCAL = 0, // Local symbol, not visible outside obj file containing def
1328  STB_GLOBAL = 1, // Global symbol, visible to all object files being combined
1329  STB_WEAK = 2, // Weak symbol, like global but lower-precedence
1330  STB_LOOS = 10, // Lowest operating system-specific binding type
1331  STB_HIOS = 12, // Highest operating system-specific binding type
1332  STB_LOPROC = 13, // Lowest processor-specific binding type
1333  STB_HIPROC = 15 // Highest processor-specific binding type
1334 };
1335 
1336 // Symbol types.
1337 enum {
1338  STT_NOTYPE = 0, // Symbol's type is not specified
1339  STT_OBJECT = 1, // Symbol is a data object (variable, array, etc.)
1340  STT_FUNC = 2, // Symbol is executable code (function, etc.)
1341  STT_SECTION = 3, // Symbol refers to a section
1342  STT_FILE = 4, // Local, absolute symbol that refers to a file
1343  STT_COMMON = 5, // An uninitialized common block
1344  STT_TLS = 6, // Thread local data object
1345  STT_LOOS = 7, // Lowest operating system-specific symbol type
1346  STT_HIOS = 8, // Highest operating system-specific symbol type
1347  STT_GNU_IFUNC = 10, // GNU indirect function
1348  STT_LOPROC = 13, // Lowest processor-specific symbol type
1349  STT_HIPROC = 15 // Highest processor-specific symbol type
1350 };
1351 
1352 enum {
1353  STV_DEFAULT = 0, // Visibility is specified by binding type
1354  STV_INTERNAL = 1, // Defined by processor supplements
1355  STV_HIDDEN = 2, // Not visible to other components
1356  STV_PROTECTED = 3 // Visible in other components but not preemptable
1357 };
1358 
1359 // Symbol number.
1360 enum {
1362 };
1363 
1364 // Relocation entry, without explicit addend.
1365 struct Elf32_Rel {
1366  Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr)
1367  Elf32_Word r_info; // Symbol table index and type of relocation to apply
1368 
1369  // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
1370  // and ELF32_R_INFO macros defined in the ELF specification:
1371  Elf32_Word getSymbol() const { return (r_info >> 8); }
1372  unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); }
1374  void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
1375  void setSymbolAndType(Elf32_Word s, unsigned char t) {
1376  r_info = (s << 8) + t;
1377  }
1378 };
1379 
1380 // Relocation entry with explicit addend.
1381 struct Elf32_Rela {
1382  Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr)
1383  Elf32_Word r_info; // Symbol table index and type of relocation to apply
1384  Elf32_Sword r_addend; // Compute value for relocatable field by adding this
1385 
1386  // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
1387  // and ELF32_R_INFO macros defined in the ELF specification:
1388  Elf32_Word getSymbol() const { return (r_info >> 8); }
1389  unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); }
1391  void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
1392  void setSymbolAndType(Elf32_Word s, unsigned char t) {
1393  r_info = (s << 8) + t;
1394  }
1395 };
1396 
1397 // Relocation entry, without explicit addend.
1398 struct Elf64_Rel {
1399  Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr).
1400  Elf64_Xword r_info; // Symbol table index and type of relocation to apply.
1401 
1402  // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
1403  // and ELF64_R_INFO macros defined in the ELF specification:
1404  Elf64_Word getSymbol() const { return (r_info >> 32); }
1406  return (Elf64_Word) (r_info & 0xffffffffL);
1407  }
1411  r_info = ((Elf64_Xword)s << 32) + (t&0xffffffffL);
1412  }
1413 };
1414 
1415 // Relocation entry with explicit addend.
1416 struct Elf64_Rela {
1417  Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr).
1418  Elf64_Xword r_info; // Symbol table index and type of relocation to apply.
1419  Elf64_Sxword r_addend; // Compute value for relocatable field by adding this.
1420 
1421  // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
1422  // and ELF64_R_INFO macros defined in the ELF specification:
1423  Elf64_Word getSymbol() const { return (r_info >> 32); }
1425  return (Elf64_Word) (r_info & 0xffffffffL);
1426  }
1430  r_info = ((Elf64_Xword)s << 32) + (t&0xffffffffL);
1431  }
1432 };
1433 
1434 // Program header for ELF32.
1435 struct Elf32_Phdr {
1436  Elf32_Word p_type; // Type of segment
1437  Elf32_Off p_offset; // File offset where segment is located, in bytes
1438  Elf32_Addr p_vaddr; // Virtual address of beginning of segment
1439  Elf32_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
1440  Elf32_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
1441  Elf32_Word p_memsz; // Num. of bytes in mem image of segment (may be zero)
1442  Elf32_Word p_flags; // Segment flags
1443  Elf32_Word p_align; // Segment alignment constraint
1444 };
1445 
1446 // Program header for ELF64.
1447 struct Elf64_Phdr {
1448  Elf64_Word p_type; // Type of segment
1449  Elf64_Word p_flags; // Segment flags
1450  Elf64_Off p_offset; // File offset where segment is located, in bytes
1451  Elf64_Addr p_vaddr; // Virtual address of beginning of segment
1452  Elf64_Addr p_paddr; // Physical addr of beginning of segment (OS-specific)
1453  Elf64_Xword p_filesz; // Num. of bytes in file image of segment (may be zero)
1454  Elf64_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero)
1455  Elf64_Xword p_align; // Segment alignment constraint
1456 };
1457 
1458 // Segment types.
1459 enum {
1460  PT_NULL = 0, // Unused segment.
1461  PT_LOAD = 1, // Loadable segment.
1462  PT_DYNAMIC = 2, // Dynamic linking information.
1463  PT_INTERP = 3, // Interpreter pathname.
1464  PT_NOTE = 4, // Auxiliary information.
1465  PT_SHLIB = 5, // Reserved.
1466  PT_PHDR = 6, // The program header table itself.
1467  PT_TLS = 7, // The thread-local storage template.
1468  PT_LOOS = 0x60000000, // Lowest operating system-specific pt entry type.
1469  PT_HIOS = 0x6fffffff, // Highest operating system-specific pt entry type.
1470  PT_LOPROC = 0x70000000, // Lowest processor-specific program hdr entry type.
1471  PT_HIPROC = 0x7fffffff, // Highest processor-specific program hdr entry type.
1472 
1473  // x86-64 program header types.
1474  // These all contain stack unwind tables.
1475  PT_GNU_EH_FRAME = 0x6474e550,
1476  PT_SUNW_EH_FRAME = 0x6474e550,
1477  PT_SUNW_UNWIND = 0x6464e550,
1478 
1479  PT_GNU_STACK = 0x6474e551, // Indicates stack executability.
1480  PT_GNU_RELRO = 0x6474e552, // Read-only after relocation.
1481 
1482  // ARM program header types.
1483  PT_ARM_ARCHEXT = 0x70000000, // Platform architecture compatibility info
1484  // These all contain stack unwind tables.
1485  PT_ARM_EXIDX = 0x70000001,
1486  PT_ARM_UNWIND = 0x70000001,
1487 
1488  // MIPS program header types.
1489  PT_MIPS_REGINFO = 0x70000000, // Register usage information.
1490  PT_MIPS_RTPROC = 0x70000001, // Runtime procedure table.
1491  PT_MIPS_OPTIONS = 0x70000002 // Options segment.
1492 };
1493 
1494 // Segment flag bits.
1495 enum LLVM_ENUM_INT_TYPE(unsigned) {
1496  PF_X = 1, // Execute
1497  PF_W = 2, // Write
1498  PF_R = 4, // Read
1499  PF_MASKOS = 0x0ff00000,// Bits for operating system-specific semantics.
1500  PF_MASKPROC = 0xf0000000 // Bits for processor-specific semantics.
1501 };
1502 
1503 // Dynamic table entry for ELF32.
1505 {
1506  Elf32_Sword d_tag; // Type of dynamic table entry.
1507  union
1508  {
1509  Elf32_Word d_val; // Integer value of entry.
1510  Elf32_Addr d_ptr; // Pointer value of entry.
1511  } d_un;
1512 };
1513 
1514 // Dynamic table entry for ELF64.
1516 {
1517  Elf64_Sxword d_tag; // Type of dynamic table entry.
1518  union
1519  {
1520  Elf64_Xword d_val; // Integer value of entry.
1521  Elf64_Addr d_ptr; // Pointer value of entry.
1522  } d_un;
1523 };
1524 
1525 // Dynamic table entry tags.
1526 enum {
1527  DT_NULL = 0, // Marks end of dynamic array.
1528  DT_NEEDED = 1, // String table offset of needed library.
1529  DT_PLTRELSZ = 2, // Size of relocation entries in PLT.
1530  DT_PLTGOT = 3, // Address associated with linkage table.
1531  DT_HASH = 4, // Address of symbolic hash table.
1532  DT_STRTAB = 5, // Address of dynamic string table.
1533  DT_SYMTAB = 6, // Address of dynamic symbol table.
1534  DT_RELA = 7, // Address of relocation table (Rela entries).
1535  DT_RELASZ = 8, // Size of Rela relocation table.
1536  DT_RELAENT = 9, // Size of a Rela relocation entry.
1537  DT_STRSZ = 10, // Total size of the string table.
1538  DT_SYMENT = 11, // Size of a symbol table entry.
1539  DT_INIT = 12, // Address of initialization function.
1540  DT_FINI = 13, // Address of termination function.
1541  DT_SONAME = 14, // String table offset of a shared objects name.
1542  DT_RPATH = 15, // String table offset of library search path.
1543  DT_SYMBOLIC = 16, // Changes symbol resolution algorithm.
1544  DT_REL = 17, // Address of relocation table (Rel entries).
1545  DT_RELSZ = 18, // Size of Rel relocation table.
1546  DT_RELENT = 19, // Size of a Rel relocation entry.
1547  DT_PLTREL = 20, // Type of relocation entry used for linking.
1548  DT_DEBUG = 21, // Reserved for debugger.
1549  DT_TEXTREL = 22, // Relocations exist for non-writable segments.
1550  DT_JMPREL = 23, // Address of relocations associated with PLT.
1551  DT_BIND_NOW = 24, // Process all relocations before execution.
1552  DT_INIT_ARRAY = 25, // Pointer to array of initialization functions.
1553  DT_FINI_ARRAY = 26, // Pointer to array of termination functions.
1554  DT_INIT_ARRAYSZ = 27, // Size of DT_INIT_ARRAY.
1555  DT_FINI_ARRAYSZ = 28, // Size of DT_FINI_ARRAY.
1556  DT_RUNPATH = 29, // String table offset of lib search path.
1557  DT_FLAGS = 30, // Flags.
1558  DT_ENCODING = 32, // Values from here to DT_LOOS follow the rules
1559  // for the interpretation of the d_un union.
1560 
1561  DT_PREINIT_ARRAY = 32, // Pointer to array of preinit functions.
1562  DT_PREINIT_ARRAYSZ = 33, // Size of the DT_PREINIT_ARRAY array.
1563 
1564  DT_LOOS = 0x60000000, // Start of environment specific tags.
1565  DT_HIOS = 0x6FFFFFFF, // End of environment specific tags.
1566  DT_LOPROC = 0x70000000, // Start of processor specific tags.
1567  DT_HIPROC = 0x7FFFFFFF, // End of processor specific tags.
1568 
1569  DT_RELACOUNT = 0x6FFFFFF9, // ELF32_Rela count.
1570  DT_RELCOUNT = 0x6FFFFFFA, // ELF32_Rel count.
1571 
1572  DT_FLAGS_1 = 0X6FFFFFFB, // Flags_1.
1573  DT_VERSYM = 0x6FFFFFF0, // The address of .gnu.version section.
1574  DT_VERDEF = 0X6FFFFFFC, // The address of the version definition table.
1575  DT_VERDEFNUM = 0X6FFFFFFD, // The number of entries in DT_VERDEF.
1576  DT_VERNEED = 0X6FFFFFFE, // The address of the version Dependency table.
1577  DT_VERNEEDNUM = 0X6FFFFFFF, // The number of entries in DT_VERNEED.
1578 
1579  // Mips specific dynamic table entry tags.
1580  DT_MIPS_RLD_VERSION = 0x70000001, // 32 bit version number for runtime
1581  // linker interface.
1582  DT_MIPS_TIME_STAMP = 0x70000002, // Time stamp.
1583  DT_MIPS_ICHECKSUM = 0x70000003, // Checksum of external strings
1584  // and common sizes.
1585  DT_MIPS_IVERSION = 0x70000004, // Index of version string
1586  // in string table.
1587  DT_MIPS_FLAGS = 0x70000005, // 32 bits of flags.
1588  DT_MIPS_BASE_ADDRESS = 0x70000006, // Base address of the segment.
1589  DT_MIPS_MSYM = 0x70000007, // Address of .msym section.
1590  DT_MIPS_CONFLICT = 0x70000008, // Address of .conflict section.
1591  DT_MIPS_LIBLIST = 0x70000009, // Address of .liblist section.
1592  DT_MIPS_LOCAL_GOTNO = 0x7000000a, // Number of local global offset
1593  // table entries.
1594  DT_MIPS_CONFLICTNO = 0x7000000b, // Number of entries
1595  // in the .conflict section.
1596  DT_MIPS_LIBLISTNO = 0x70000010, // Number of entries
1597  // in the .liblist section.
1598  DT_MIPS_SYMTABNO = 0x70000011, // Number of entries
1599  // in the .dynsym section.
1600  DT_MIPS_UNREFEXTNO = 0x70000012, // Index of first external dynamic symbol
1601  // not referenced locally.
1602  DT_MIPS_GOTSYM = 0x70000013, // Index of first dynamic symbol
1603  // in global offset table.
1604  DT_MIPS_HIPAGENO = 0x70000014, // Number of page table entries
1605  // in global offset table.
1606  DT_MIPS_RLD_MAP = 0x70000016, // Address of run time loader map,
1607  // used for debugging.
1608  DT_MIPS_DELTA_CLASS = 0x70000017, // Delta C++ class definition.
1609  DT_MIPS_DELTA_CLASS_NO = 0x70000018, // Number of entries
1610  // in DT_MIPS_DELTA_CLASS.
1611  DT_MIPS_DELTA_INSTANCE = 0x70000019, // Delta C++ class instances.
1612  DT_MIPS_DELTA_INSTANCE_NO = 0x7000001A, // Number of entries
1613  // in DT_MIPS_DELTA_INSTANCE.
1614  DT_MIPS_DELTA_RELOC = 0x7000001B, // Delta relocations.
1615  DT_MIPS_DELTA_RELOC_NO = 0x7000001C, // Number of entries
1616  // in DT_MIPS_DELTA_RELOC.
1617  DT_MIPS_DELTA_SYM = 0x7000001D, // Delta symbols that Delta
1618  // relocations refer to.
1619  DT_MIPS_DELTA_SYM_NO = 0x7000001E, // Number of entries
1620  // in DT_MIPS_DELTA_SYM.
1621  DT_MIPS_DELTA_CLASSSYM = 0x70000020, // Delta symbols that hold
1622  // class declarations.
1623  DT_MIPS_DELTA_CLASSSYM_NO = 0x70000021, // Number of entries
1624  // in DT_MIPS_DELTA_CLASSSYM.
1625  DT_MIPS_CXX_FLAGS = 0x70000022, // Flags indicating information
1626  // about C++ flavor.
1627  DT_MIPS_PIXIE_INIT = 0x70000023, // Pixie information.
1628  DT_MIPS_SYMBOL_LIB = 0x70000024, // Address of .MIPS.symlib
1629  DT_MIPS_LOCALPAGE_GOTIDX = 0x70000025, // The GOT index of the first PTE
1630  // for a segment
1631  DT_MIPS_LOCAL_GOTIDX = 0x70000026, // The GOT index of the first PTE
1632  // for a local symbol
1633  DT_MIPS_HIDDEN_GOTIDX = 0x70000027, // The GOT index of the first PTE
1634  // for a hidden symbol
1635  DT_MIPS_PROTECTED_GOTIDX = 0x70000028, // The GOT index of the first PTE
1636  // for a protected symbol
1637  DT_MIPS_OPTIONS = 0x70000029, // Address of `.MIPS.options'.
1638  DT_MIPS_INTERFACE = 0x7000002A, // Address of `.interface'.
1639  DT_MIPS_DYNSTR_ALIGN = 0x7000002B, // Unknown.
1640  DT_MIPS_INTERFACE_SIZE = 0x7000002C, // Size of the .interface section.
1641  DT_MIPS_RLD_TEXT_RESOLVE_ADDR = 0x7000002D, // Size of rld_text_resolve
1642  // function stored in the GOT.
1643  DT_MIPS_PERF_SUFFIX = 0x7000002E, // Default suffix of DSO to be added
1644  // by rld on dlopen() calls.
1645  DT_MIPS_COMPACT_SIZE = 0x7000002F, // Size of compact relocation
1646  // section (O32).
1647  DT_MIPS_GP_VALUE = 0x70000030, // GP value for auxiliary GOTs.
1648  DT_MIPS_AUX_DYNAMIC = 0x70000031, // Address of auxiliary .dynamic.
1649  DT_MIPS_PLTGOT = 0x70000032, // Address of the base of the PLTGOT.
1650  DT_MIPS_RWPLT = 0x70000034 // Points to the base
1651  // of a writable PLT.
1652 };
1653 
1654 // DT_FLAGS values.
1655 enum {
1656  DF_ORIGIN = 0x01, // The object may reference $ORIGIN.
1657  DF_SYMBOLIC = 0x02, // Search the shared lib before searching the exe.
1658  DF_TEXTREL = 0x04, // Relocations may modify a non-writable segment.
1659  DF_BIND_NOW = 0x08, // Process all relocations on load.
1660  DF_STATIC_TLS = 0x10 // Reject attempts to load dynamically.
1661 };
1662 
1663 // State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1 entry.
1664 enum {
1665  DF_1_NOW = 0x00000001, // Set RTLD_NOW for this object.
1666  DF_1_GLOBAL = 0x00000002, // Set RTLD_GLOBAL for this object.
1667  DF_1_GROUP = 0x00000004, // Set RTLD_GROUP for this object.
1668  DF_1_NODELETE = 0x00000008, // Set RTLD_NODELETE for this object.
1669  DF_1_LOADFLTR = 0x00000010, // Trigger filtee loading at runtime.
1670  DF_1_INITFIRST = 0x00000020, // Set RTLD_INITFIRST for this object.
1671  DF_1_NOOPEN = 0x00000040, // Set RTLD_NOOPEN for this object.
1672  DF_1_ORIGIN = 0x00000080, // $ORIGIN must be handled.
1673  DF_1_DIRECT = 0x00000100, // Direct binding enabled.
1674  DF_1_TRANS = 0x00000200,
1675  DF_1_INTERPOSE = 0x00000400, // Object is used to interpose.
1676  DF_1_NODEFLIB = 0x00000800, // Ignore default lib search path.
1677  DF_1_NODUMP = 0x00001000, // Object can't be dldump'ed.
1678  DF_1_CONFALT = 0x00002000, // Configuration alternative created.
1679  DF_1_ENDFILTEE = 0x00004000, // Filtee terminates filters search.
1680  DF_1_DISPRELDNE = 0x00008000, // Disp reloc applied at build time.
1681  DF_1_DISPRELPND = 0x00010000 // Disp reloc applied at run-time.
1682 };
1683 
1684 // DT_MIPS_FLAGS values.
1685 enum {
1686  RHF_NONE = 0x00000000, // No flags.
1687  RHF_QUICKSTART = 0x00000001, // Uses shortcut pointers.
1688  RHF_NOTPOT = 0x00000002, // Hash size is not a power of two.
1689  RHS_NO_LIBRARY_REPLACEMENT = 0x00000004, // Ignore LD_LIBRARY_PATH.
1690  RHF_NO_MOVE = 0x00000008, // DSO address may not be relocated.
1691  RHF_SGI_ONLY = 0x00000010, // SGI specific features.
1692  RHF_GUARANTEE_INIT = 0x00000020, // Guarantee that .init will finish
1693  // executing before any non-init
1694  // code in DSO is called.
1695  RHF_DELTA_C_PLUS_PLUS = 0x00000040, // Contains Delta C++ code.
1696  RHF_GUARANTEE_START_INIT = 0x00000080, // Guarantee that .init will start
1697  // executing before any non-init
1698  // code in DSO is called.
1699  RHF_PIXIE = 0x00000100, // Generated by pixie.
1700  RHF_DEFAULT_DELAY_LOAD = 0x00000200, // Delay-load DSO by default.
1701  RHF_REQUICKSTART = 0x00000400, // Object may be requickstarted
1702  RHF_REQUICKSTARTED = 0x00000800, // Object has been requickstarted
1703  RHF_CORD = 0x00001000, // Generated by cord.
1704  RHF_NO_UNRES_UNDEF = 0x00002000, // Object contains no unresolved
1705  // undef symbols.
1706  RHF_RLD_ORDER_SAFE = 0x00004000 // Symbol table is in a safe order.
1707 };
1708 
1709 // ElfXX_VerDef structure version (GNU versioning)
1710 enum {
1713 };
1714 
1715 // VerDef Flags (ElfXX_VerDef::vd_flags)
1716 enum {
1720 };
1721 
1722 // Special constants for the version table. (SHT_GNU_versym/.gnu.version)
1723 enum {
1724  VER_NDX_LOCAL = 0, // Unversioned local symbol
1725  VER_NDX_GLOBAL = 1, // Unversioned global symbol
1726  VERSYM_VERSION = 0x7fff, // Version Index mask
1727  VERSYM_HIDDEN = 0x8000 // Hidden bit (non-default version)
1728 };
1729 
1730 // ElfXX_VerNeed structure version (GNU versioning)
1731 enum {
1734 };
1735 
1736 } // end namespace ELF
1737 
1738 } // end namespace llvm
1739 
1740 #endif
Elf64_Half e_phentsize
Definition: Support/ELF.h:97
unsigned char st_other
Definition: Support/ELF.h:1285
union llvm::ELF::Elf32_Dyn::@123 d_un
void setSymbolAndType(Elf32_Word s, unsigned char t)
Definition: Support/ELF.h:1375
Elf64_Word getSymbol() const
Definition: Support/ELF.h:1404
void setSymbolAndType(Elf32_Word s, unsigned char t)
Definition: Support/ELF.h:1392
union llvm::ELF::Elf64_Dyn::@124 d_un
void setType(unsigned char t)
Definition: Support/ELF.h:1313
Elf64_Sxword r_addend
Definition: Support/ELF.h:1419
unsigned char st_other
Definition: Support/ELF.h:1303
Elf64_Word getType() const
Definition: Support/ELF.h:1424
unsigned char getBinding() const
Definition: Support/ELF.h:1310
void setSymbolAndType(Elf64_Word s, Elf64_Word t)
Definition: Support/ELF.h:1429
Elf64_Half e_shentsize
Definition: Support/ELF.h:99
Elf32_Word getSymbol() const
Definition: Support/ELF.h:1371
void setType(Elf64_Word t)
Definition: Support/ELF.h:1428
int64_t Elf64_Sxword
Definition: Support/ELF.h:43
uint32_t Elf32_Off
Definition: Support/ELF.h:32
int32_t Elf32_Sword
Definition: Support/ELF.h:35
uint64_t Elf64_Addr
Definition: Support/ELF.h:37
Elf64_Xword sh_entsize
Definition: Support/ELF.h:1115
Elf64_Xword sh_addralign
Definition: Support/ELF.h:1114
unsigned char e_ident[EI_NIDENT]
Definition: Support/ELF.h:88
Elf64_Half e_machine
Definition: Support/ELF.h:90
unsigned char getFileClass() const
Definition: Support/ELF.h:81
unsigned char getFileClass() const
Definition: Support/ELF.h:105
uint64_t Elf64_Xword
Definition: Support/ELF.h:42
int memcmp(const void *s1, const void *s2, size_t n);
void setType(unsigned char t)
Definition: Support/ELF.h:1391
void setBinding(unsigned char b)
Definition: Support/ELF.h:1312
Elf32_Half e_machine
Definition: Support/ELF.h:66
uint16_t Elf64_Half
Definition: Support/ELF.h:39
void setSymbol(Elf64_Word s)
Definition: Support/ELF.h:1408
unsigned char getDataEncoding() const
Definition: Support/ELF.h:106
bool checkMagic() const
Definition: Support/ELF.h:102
unsigned char getBinding() const
Definition: Support/ELF.h:1290
uint64_t Elf64_Off
Definition: Support/ELF.h:38
bool checkMagic() const
Definition: Support/ELF.h:78
enum LLVM_ENUM_INT_TYPE(unsigned)
Definition: Support/ELF.h:654
unsigned char st_info
Definition: Support/ELF.h:1302
void setSymbolAndType(Elf64_Word s, Elf64_Word t)
Definition: Support/ELF.h:1410
Elf32_Word getSymbol() const
Definition: Support/ELF.h:1388
static const char ElfMagic[]
Definition: Support/ELF.h:46
unsigned char getType() const
Definition: Support/ELF.h:1311
Elf64_Sxword d_tag
Definition: Support/ELF.h:1517
unsigned char getType() const
Definition: Support/ELF.h:1291
void setBindingAndType(unsigned char b, unsigned char t)
Definition: Support/ELF.h:1314
void setSymbol(Elf32_Word s)
Definition: Support/ELF.h:1390
Elf64_Word e_version
Definition: Support/ELF.h:91
unsigned char getType() const
Definition: Support/ELF.h:1372
size_t strlen(const char *s);
unsigned char getType() const
Definition: Support/ELF.h:1389
Elf32_Half e_phentsize
Definition: Support/ELF.h:73
unsigned char e_ident[EI_NIDENT]
Definition: Support/ELF.h:64
void setType(Elf64_Word t)
Definition: Support/ELF.h:1409
uint32_t Elf32_Addr
Definition: Support/ELF.h:31
Elf64_Word getType() const
Definition: Support/ELF.h:1405
unsigned char st_info
Definition: Support/ELF.h:1284
Elf64_Word getSymbol() const
Definition: Support/ELF.h:1423
int32_t Elf64_Sword
Definition: Support/ELF.h:41
void setType(unsigned char t)
Definition: Support/ELF.h:1374
uint16_t Elf32_Half
Definition: Support/ELF.h:33
uint32_t Elf32_Word
Definition: Support/ELF.h:34
Elf32_Word e_version
Definition: Support/ELF.h:67
void setType(unsigned char t)
Definition: Support/ELF.h:1293
void setSymbol(Elf64_Word s)
Definition: Support/ELF.h:1427
Elf32_Half e_shentsize
Definition: Support/ELF.h:75
Elf32_Half e_shstrndx
Definition: Support/ELF.h:77
void setBindingAndType(unsigned char b, unsigned char t)
Definition: Support/ELF.h:1294
unsigned char getDataEncoding() const
Definition: Support/ELF.h:82
void setSymbol(Elf32_Word s)
Definition: Support/ELF.h:1373
uint32_t Elf64_Word
Definition: Support/ELF.h:40
void setBinding(unsigned char b)
Definition: Support/ELF.h:1292