/*	$NetBSD: exec_elf.h,v 1.161 2019/06/07 23:35:52 christos Exp $	*/

/*-
 * Copyright (c) 1994 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Christos Zoulas.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _SYS_EXEC_ELF_H_
#define _SYS_EXEC_ELF_H_

/*
 * The current ELF ABI specification is available at:
 *	http://www.sco.com/developers/gabi/
 *
 * Current header definitions are in:
 *	http://www.sco.com/developers/gabi/latest/ch4.eheader.html
 */

#ifdef _KERNEL
#include <sys/types.h>
#else
#include <inttypes.h>
#include <stddef.h>
#endif /* !_KERNEL */

typedef uint8_t Elf_Byte;

typedef uint32_t Elf32_Addr;
#define ELF32_FSZ_ADDR 4
typedef uint32_t Elf32_Off;
typedef int32_t Elf32_SOff;
#define ELF32_FSZ_OFF 4
typedef int32_t Elf32_Sword;
#define ELF32_FSZ_SWORD 4
typedef uint32_t Elf32_Word;
#define ELF32_FSZ_WORD 4
typedef uint16_t Elf32_Half;
#define ELF32_FSZ_HALF 2
typedef uint64_t Elf32_Lword;
#define ELF32_FSZ_LWORD 8

typedef uint64_t Elf64_Addr;
#define ELF64_FSZ_ADDR 8
typedef uint64_t Elf64_Off;
typedef int64_t Elf64_SOff;
#define ELF64_FSZ_OFF 8

typedef int32_t Elf64_Sword;
#define ELF64_FSZ_SWORD 4
typedef uint32_t Elf64_Word;
#define ELF64_FSZ_WORD 4

typedef int64_t Elf64_Sxword;
#define ELF64_FSZ_SXWORD 8
typedef uint64_t Elf64_Xword;
#define ELF64_FSZ_XWORD 8
typedef uint64_t Elf64_Lword;
#define ELF64_FSZ_LWORD 8
typedef uint16_t Elf64_Half;
#define ELF64_FSZ_HALF 2

/*
 * ELF Header
 */
#define ELF_NIDENT 16

typedef struct {
  unsigned char e_ident[ELF_NIDENT]; /* Id bytes */
  Elf32_Half e_type;                 /* file type */
  Elf32_Half e_machine;              /* machine type */
  Elf32_Word e_version;              /* version number */
  Elf32_Addr e_entry;                /* entry point */
  Elf32_Off e_phoff;                 /* Program hdr offset */
  Elf32_Off e_shoff;                 /* Section hdr offset */
  Elf32_Word e_flags;                /* Processor flags */
  Elf32_Half e_ehsize;               /* sizeof ehdr */
  Elf32_Half e_phentsize;            /* Program header entry size */
  Elf32_Half e_phnum;                /* Number of program headers */
  Elf32_Half e_shentsize;            /* Section header entry size */
  Elf32_Half e_shnum;                /* Number of section headers */
  Elf32_Half e_shstrndx;             /* String table index */
} Elf32_Ehdr;

typedef struct {
  unsigned char e_ident[ELF_NIDENT]; /* Id bytes */
  Elf64_Half e_type;                 /* file type */
  Elf64_Half e_machine;              /* machine type */
  Elf64_Word e_version;              /* version number */
  Elf64_Addr e_entry;                /* entry point */
  Elf64_Off e_phoff;                 /* Program hdr offset */
  Elf64_Off e_shoff;                 /* Section hdr offset */
  Elf64_Word e_flags;                /* Processor flags */
  Elf64_Half e_ehsize;               /* sizeof ehdr */
  Elf64_Half e_phentsize;            /* Program header entry size */
  Elf64_Half e_phnum;                /* Number of program headers */
  Elf64_Half e_shentsize;            /* Section header entry size */
  Elf64_Half e_shnum;                /* Number of section headers */
  Elf64_Half e_shstrndx;             /* String table index */
} Elf64_Ehdr;

/* e_ident offsets */
#define EI_MAG0 0       /* '\177' */
#define EI_MAG1 1       /* 'E'	  */
#define EI_MAG2 2       /* 'L'	  */
#define EI_MAG3 3       /* 'F'	  */
#define EI_CLASS 4      /* File class */
#define EI_DATA 5       /* Data encoding */
#define EI_VERSION 6    /* File version */
#define EI_OSABI 7      /* Operating system/ABI identification */
#define EI_ABIVERSION 8 /* ABI version */
#define EI_PAD 9        /* Start of padding bytes up to EI_NIDENT*/
#define EI_NIDENT 16    /* First non-ident header byte */

/* e_ident[EI_MAG0,EI_MAG3] */
#define ELFMAG0 0x7f
#define ELFMAG1 'E'
#define ELFMAG2 'L'
#define ELFMAG3 'F'
#define ELFMAG "\177ELF"
#define SELFMAG 4

/* e_ident[EI_CLASS] */
#define ELFCLASSNONE 0 /* Invalid class */
#define ELFCLASS32 1   /* 32-bit objects */
#define ELFCLASS64 2   /* 64-bit objects */
#define ELFCLASSNUM 3

/* e_ident[EI_DATA] */
#define ELFDATANONE 0 /* Invalid data encoding */
#define ELFDATA2LSB 1 /* 2's complement values, LSB first */
#define ELFDATA2MSB 2 /* 2's complement values, MSB first */

/* e_ident[EI_VERSION] */
#define EV_NONE 0    /* Invalid version */
#define EV_CURRENT 1 /* Current version */
#define EV_NUM 2

/* e_ident[EI_OSABI] */
#define ELFOSABI_SYSV 0     /* UNIX System V ABI */
#define ELFOSABI_HPUX 1     /* HP-UX operating system */
#define ELFOSABI_NETBSD 2   /* NetBSD */
#define ELFOSABI_LINUX 3    /* GNU/Linux */
#define ELFOSABI_HURD 4     /* GNU/Hurd */
#define ELFOSABI_86OPEN 5   /* 86Open */
#define ELFOSABI_SOLARIS 6  /* Solaris */
#define ELFOSABI_MONTEREY 7 /* Monterey */
#define ELFOSABI_IRIX 8     /* IRIX */
#define ELFOSABI_FREEBSD 9  /* FreeBSD */
#define ELFOSABI_TRU64 10   /* TRU64 UNIX */
#define ELFOSABI_MODESTO 11 /* Novell Modesto */
#define ELFOSABI_OPENBSD 12 /* OpenBSD */
#define ELFOSABI_OPENVMS 13 /* OpenVMS */
#define ELFOSABI_NSK 14     /* HP Non-Stop Kernel */
#define ELFOSABI_AROS 15    /* Amiga Research OS */
/* Unofficial OSABIs follow */
#define ELFOSABI_ARM 97         /* ARM */
#define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */

#define ELFOSABI_NONE ELFOSABI_SYSV
#define ELFOSABI_AIX ELFOSABI_MONTEREY

/* e_type */
#define ET_NONE 0 /* No file type */
#define ET_REL 1  /* Relocatable file */
#define ET_EXEC 2 /* Executable file */
#define ET_DYN 3  /* Shared object file */
#define ET_CORE 4 /* Core file */
#define ET_NUM 5

#define ET_LOOS 0xfe00 /* Operating system specific range */
#define ET_HIOS 0xfeff
#define ET_LOPROC 0xff00 /* Processor-specific range */
#define ET_HIPROC 0xffff

/* e_machine */
#define EM_NONE 0         /* No machine */
#define EM_M32 1          /* AT&T WE 32100 */
#define EM_SPARC 2        /* SPARC */
#define EM_386 3          /* Intel 80386 */
#define EM_68K 4          /* Motorola 68000 */
#define EM_88K 5          /* Motorola 88000 */
#define EM_486 6          /* Intel 80486 [old] */
#define EM_IAMCU 6        /* Intel MCU. */
#define EM_860 7          /* Intel 80860 */
#define EM_MIPS 8         /* MIPS I Architecture */
#define EM_S370 9         /* Amdahl UTS on System/370 */
#define EM_MIPS_RS3_LE 10 /* MIPS RS3000 Little-endian */
                          /* 11-14 - Reserved */
#define EM_RS6000 11      /* IBM RS/6000 XXX reserved */
#define EM_PARISC 15      /* Hewlett-Packard PA-RISC */
#define EM_NCUBE 16       /* NCube XXX reserved */
#define EM_VPP500 17      /* Fujitsu VPP500 */
#define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */
#define EM_960 19         /* Intel 80960 */
#define EM_PPC 20         /* PowerPC */
#define EM_PPC64 21       /* 64-bit PowerPC */
                          /* 22-35 - Reserved */
#define EM_S390 22        /* System/390 XXX reserved */
#define EM_V800 36        /* NEC V800 */
#define EM_FR20 37        /* Fujitsu FR20 */
#define EM_RH32 38        /* TRW RH-32 */
#define EM_RCE 39         /* Motorola RCE */
#define EM_ARM 40         /* Advanced RISC Machines ARM */
#define EM_ALPHA 41       /* DIGITAL Alpha */
#define EM_SH 42          /* Hitachi Super-H */
#define EM_SPARCV9 43     /* SPARC Version 9 */
#define EM_TRICORE 44     /* Siemens Tricore */
#define EM_ARC 45         /* Argonaut RISC Core */
#define EM_H8_300 46      /* Hitachi H8/300 */
#define EM_H8_300H 47     /* Hitachi H8/300H */
#define EM_H8S 48         /* Hitachi H8S */
#define EM_H8_500 49      /* Hitachi H8/500 */
#define EM_IA_64 50       /* Intel Merced Processor */
#define EM_MIPS_X 51      /* Stanford MIPS-X */
#define EM_COLDFIRE 52    /* Motorola Coldfire */
#define EM_68HC12 53      /* Motorola MC68HC12 */
#define EM_MMA 54         /* Fujitsu MMA Multimedia Accelerator */
#define EM_PCP 55         /* Siemens PCP */
#define EM_NCPU 56        /* Sony nCPU embedded RISC processor */
#define EM_NDR1 57        /* Denso NDR1 microprocessor */
#define EM_STARCORE 58    /* Motorola Star*Core processor */
#define EM_ME16 59        /* Toyota ME16 processor */
#define EM_ST100 60       /* STMicroelectronics ST100 processor */
#define EM_TINYJ 61   /* Advanced Logic Corp. TinyJ embedded family processor */
#define EM_X86_64 62  /* AMD x86-64 architecture */
#define EM_PDSP 63    /* Sony DSP Processor */
#define EM_PDP10 64   /* Digital Equipment Corp. PDP-10 */
#define EM_PDP11 65   /* Digital Equipment Corp. PDP-11 */
#define EM_FX66 66    /* Siemens FX66 microcontroller */
#define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16 bit microcontroller */
#define EM_ST7 68     /* STMicroelectronics ST7 8-bit microcontroller */
#define EM_68HC16 69  /* Motorola MC68HC16 Microcontroller */
#define EM_68HC11 70  /* Motorola MC68HC11 Microcontroller */
#define EM_68HC08 71  /* Motorola MC68HC08 Microcontroller */
#define EM_68HC05 72  /* Motorola MC68HC05 Microcontroller */
#define EM_SVX 73     /* Silicon Graphics SVx */
#define EM_ST19 74    /* STMicroelectronics ST19 8-bit CPU */
#define EM_VAX 75     /* Digital VAX */
#define EM_CRIS 76    /* Axis Communications 32-bit embedded processor */
#define EM_JAVELIN 77 /* Infineon Technologies 32-bit embedded CPU */
#define EM_FIREPATH 78 /* Element 14 64-bit DSP processor */
#define EM_ZSP 79      /* LSI Logic's 16-bit DSP processor */
#define EM_MMIX 80     /* Donald Knuth's educational 64-bit processor */
#define EM_HUANY 81    /* Harvard's machine-independent format */
#define EM_PRISM 82    /* SiTera Prism */
#define EM_AVR 83      /* Atmel AVR 8-bit microcontroller */
#define EM_FR30 84     /* Fujitsu FR30 */
#define EM_D10V 85     /* Mitsubishi D10V */
#define EM_D30V 86     /* Mitsubishi D30V */
#define EM_V850 87     /* NEC v850 */
#define EM_M32R 88     /* Mitsubishi M32R */
#define EM_MN10300 89  /* Matsushita MN10300 */
#define EM_MN10200 90  /* Matsushita MN10200 */
#define EM_PJ 91       /* picoJava */
#define EM_OR1K 92     /* OpenRISC 32-bit embedded processor */
#define EM_OPENRISC EM_OR1K
#define EM_ARC_A5 93    /* ARC Cores Tangent-A5 */
#define EM_XTENSA 94    /* Tensilica Xtensa Architecture */
#define EM_VIDEOCORE 95 /* Alphamosaic VideoCore processor */
#define EM_TMM_GPP 96   /* Thompson Multimedia General Purpose Processor */
#define EM_NS32K 97     /* National Semiconductor 32000 series */
#define EM_TPC 98       /* Tenor Network TPC processor */
#define EM_SNP1K 99     /* Trebia SNP 1000 processor */
#define EM_ST200 100    /* STMicroelectronics ST200 microcontroller */
#define EM_IP2K 101     /* Ubicom IP2xxx microcontroller family */
#define EM_MAX 102      /* MAX processor */
#define EM_CR 103       /* National Semiconductor CompactRISC micorprocessor */
#define EM_F2MC16 104   /* Fujitsu F2MC16 */
#define EM_MSP430 105   /* Texas Instruments MSP430 */
#define EM_BLACKFIN 106 /* Analog Devices Blackfin DSP */
#define EM_SE_C33 107   /* Seiko Epson S1C33 family */
#define EM_SEP 108      /* Sharp embedded microprocessor */
#define EM_ARCA 109     /* Arca RISC microprocessor */
#define EM_UNICORE                                                             \
  110 /* UNICORE from PKU-Unity Ltd. and MPRC Peking University */
#define EM_ALTERA_NIOS2 113 /* Altera Nios II soft-core processor */
#define EM_AARCH64 183      /* AArch64 64-bit ARM microprocessor */
#define EM_AVR32 185        /* Atmel Corporation 32-bit microprocessor family*/
#define EM_TILE64 187       /* Tilera TILE64 multicore architecture family */
#define EM_TILEPRO 188      /* Tilera TILEPro multicore architecture family */
#define EM_MICROBLAZE                                                          \
  189                 /* Xilinx MicroBlaze 32-bit RISC soft processor core */
#define EM_TILEGX 192 /* Tilera TILE-GX multicore architecture family */
#define EM_Z80 220    /* Zilog Z80 */
#define EM_RISCV 243  /* RISC-V */

/* Unofficial machine types follow */
#define EM_ALPHA_EXP 36902 /* used by NetBSD/alpha; obsolete */
#define EM_NUM 36903

/*
 * Program Header
 */
typedef struct {
  Elf32_Word p_type;   /* entry type */
  Elf32_Off p_offset;  /* offset */
  Elf32_Addr p_vaddr;  /* virtual address */
  Elf32_Addr p_paddr;  /* physical address */
  Elf32_Word p_filesz; /* file size */
  Elf32_Word p_memsz;  /* memory size */
  Elf32_Word p_flags;  /* flags */
  Elf32_Word p_align;  /* memory & file alignment */
} Elf32_Phdr;

typedef struct {
  Elf64_Word p_type;    /* entry type */
  Elf64_Word p_flags;   /* flags */
  Elf64_Off p_offset;   /* offset */
  Elf64_Addr p_vaddr;   /* virtual address */
  Elf64_Addr p_paddr;   /* physical address */
  Elf64_Xword p_filesz; /* file size */
  Elf64_Xword p_memsz;  /* memory size */
  Elf64_Xword p_align;  /* memory & file alignment */
} Elf64_Phdr;

/* p_type */
#define PT_NULL 0    /* Program header table entry unused */
#define PT_LOAD 1    /* Loadable program segment */
#define PT_DYNAMIC 2 /* Dynamic linking information */
#define PT_INTERP 3  /* Program interpreter */
#define PT_NOTE 4    /* Auxiliary information */
#define PT_SHLIB 5   /* Reserved, unspecified semantics */
#define PT_PHDR 6    /* Entry for header table itself */
#define PT_TLS 7     /* TLS initialisation image */
#define PT_NUM 8

#define PT_LOOS 0x60000000 /* OS-specific range */

/* GNU-specific */
#define PT_GNU_EH_FRAME 0x6474e550 /* EH frame segment */
#define PT_GNU_STACK 0x6474e551    /* Indicate executable stack */
#define PT_GNU_RELRO 0x6474e552    /* Make read-only after relocation */

#define PT_HIOS 0x6fffffff
#define PT_LOPROC 0x70000000 /* Processor-specific range */
#define PT_HIPROC 0x7fffffff

#define PT_MIPS_REGINFO 0x70000000
#define PT_MIPS_ABIFLAGS 0x70000003

/* p_flags */
#define PF_R 0x4 /* Segment is readable */
#define PF_W 0x2 /* Segment is writable */
#define PF_X 0x1 /* Segment is executable */

#define PF_MASKOS 0x0ff00000   /* Operating system specific values */
#define PF_MASKPROC 0xf0000000 /* Processor-specific values */

/* Extended program header index. */
#define PN_XNUM 0xffff

/*
 * Section Headers
 */
typedef struct {
  Elf32_Word sh_name;      /* section name (.shstrtab index) */
  Elf32_Word sh_type;      /* section type */
  Elf32_Word sh_flags;     /* section flags */
  Elf32_Addr sh_addr;      /* virtual address */
  Elf32_Off sh_offset;     /* file offset */
  Elf32_Word sh_size;      /* section size */
  Elf32_Word sh_link;      /* link to another */
  Elf32_Word sh_info;      /* misc info */
  Elf32_Word sh_addralign; /* memory alignment */
  Elf32_Word sh_entsize;   /* table entry size */
} Elf32_Shdr;

typedef struct {
  Elf64_Word sh_name;       /* section name (.shstrtab index) */
  Elf64_Word sh_type;       /* section type */
  Elf64_Xword sh_flags;     /* section flags */
  Elf64_Addr sh_addr;       /* virtual address */
  Elf64_Off sh_offset;      /* file offset */
  Elf64_Xword sh_size;      /* section size */
  Elf64_Word sh_link;       /* link to another */
  Elf64_Word sh_info;       /* misc info */
  Elf64_Xword sh_addralign; /* memory alignment */
  Elf64_Xword sh_entsize;   /* table entry size */
} Elf64_Shdr;

/* sh_type */
#define SHT_NULL 0           /* Section header table entry unused */
#define SHT_PROGBITS 1       /* Program information */
#define SHT_SYMTAB 2         /* Symbol table */
#define SHT_STRTAB 3         /* String table */
#define SHT_RELA 4           /* Relocation information w/ addend */
#define SHT_HASH 5           /* Symbol hash table */
#define SHT_DYNAMIC 6        /* Dynamic linking information */
#define SHT_NOTE 7           /* Auxiliary information */
#define SHT_NOBITS 8         /* No space allocated in file image */
#define SHT_REL 9            /* Relocation information w/o addend */
#define SHT_SHLIB 10         /* Reserved, unspecified semantics */
#define SHT_DYNSYM 11        /* Symbol table for dynamic linker */
#define SHT_INIT_ARRAY 14    /* Initialization function pointers */
#define SHT_FINI_ARRAY 15    /* Termination function pointers */
#define SHT_PREINIT_ARRAY 16 /* Pre-initialization function ptrs */
#define SHT_GROUP 17         /* Section group */
#define SHT_SYMTAB_SHNDX 18  /* Section indexes (see SHN_XINDEX) */
#define SHT_NUM 19

#define SHT_LOOS 0x60000000 /* Operating system specific range */
#define SHT_GNU_INCREMENTAL_INPUTS 0x6fff4700 /* GNU incremental build data */
#define SHT_LOSUNW 0x6ffffff4
#define SHT_SUNW_dof 0x6ffffff4
#define SHT_GNU_ATTRIBUTES 0x6ffffff5 /* GNU object attributes */
#define SHT_SUNW_cap 0x6ffffff5
#define SHT_SUNW_SIGNATURE 0x6ffffff6
#define SHT_GNU_HASH 0x6ffffff6    /* GNU style symbol hash table */
#define SHT_GNU_LIBLIST 0x6ffffff7 /* GNU list of prelink dependencies */
#define SHT_SUNW_move 0x6ffffffa
#define SHT_SUNW_COMDAT 0x6ffffffb
#define SHT_SUNW_syminfo 0x6ffffffc
#define SHT_SUNW_verdef 0x6ffffffd /* Versions defined by file */
#define SHT_GNU_verdef SHT_SUNW_verdef
#define SHT_SUNW_verneed 0x6ffffffe /* Versions needed by file */
#define SHT_GNU_verneed SHT_SUNW_verneed
#define SHT_SUNW_versym 0x6fffffff /* Symbol versions */
#define SHT_GNU_versym SHT_SUNW_versym
#define SHT_HISUNW 0x6fffffff
#define SHT_HIOS 0x6fffffff
#define SHT_LOPROC 0x70000000       /* Processor-specific range */
#define SHT_AMD64_UNWIND 0x70000001 /* unwind information */
#define SHT_ARM_EXIDX 0x70000001    /* exception index table */
#define SHT_ARM_PREEMPTMAP                                                     \
  0x70000002 /* BPABI DLL dynamic linking                                      \
              * pre-emption map */
#define SHT_ARM_ATTRIBUTES                                                     \
  0x70000003                            /* Object file compatibility           \
                                         * attributes */
#define SHT_ARM_DEBUGOVERLAY 0x70000004 /* See DBGOVL for details */
#define SHT_ARM_OVERLAYSECTION 0x70000005
#define SHT_MIPS_REGINFO 0x70000006
#define SHT_MIPS_OPTIONS 0x7000000d
#define SHT_MIPS_DWARF 0x7000001e /* MIPS gcc uses MIPS_DWARF */
#define SHT_HIPROC 0x7fffffff
#define SHT_LOUSER 0x80000000 /* Application-specific range */
#define SHT_HIUSER 0xffffffff

/* sh_flags */
#define SHF_WRITE 0x00000001            /* Contains writable data */
#define SHF_ALLOC 0x00000002            /* Occupies memory */
#define SHF_EXECINSTR 0x00000004        /* Contains executable insns */
#define SHF_MERGE 0x00000010            /* Might be merged */
#define SHF_STRINGS 0x00000020          /* Contains nul terminated strings */
#define SHF_INFO_LINK 0x00000040        /* "sh_info" contains SHT index */
#define SHF_LINK_ORDER 0x00000080       /* Preserve order after combining */
#define SHF_OS_NONCONFORMING 0x00000100 /* OS specific handling required */
#define SHF_GROUP 0x00000200            /* Is member of a group */
#define SHF_TLS 0x00000400              /* Holds thread-local data */
#define SHF_MASKOS 0x0ff00000           /* Operating system specific values */
#define SHF_MASKPROC 0xf0000000         /* Processor-specific values */
#define SHF_ORDERED 0x40000000          /* Ordering requirement (Solaris) */
#define SHF_EXCLUDE                                                            \
  0x80000000 /* Excluded unless unles ref/alloc                                \
                (Solaris).*/
/*
 * Symbol Table
 */
typedef struct {
  Elf32_Word st_name;  /* Symbol name (.strtab index) */
  Elf32_Word st_value; /* value of symbol */
  Elf32_Word st_size;  /* size of symbol */
  Elf_Byte st_info;    /* type / binding attrs */
  Elf_Byte st_other;   /* unused */
  Elf32_Half st_shndx; /* section index of symbol */
} Elf32_Sym;

typedef struct {
  Elf64_Word st_name;  /* Symbol name (.strtab index) */
  Elf_Byte st_info;    /* type / binding attrs */
  Elf_Byte st_other;   /* unused */
  Elf64_Half st_shndx; /* section index of symbol */
  Elf64_Addr st_value; /* value of symbol */
  Elf64_Xword st_size; /* size of symbol */
} Elf64_Sym;

/* Symbol Table index of the undefined symbol */
#define ELF_SYM_UNDEFINED 0

#define STN_UNDEF 0 /* undefined index */

/* st_info: Symbol Bindings */
#define STB_LOCAL 0  /* local symbol */
#define STB_GLOBAL 1 /* global symbol */
#define STB_WEAK 2   /* weakly defined global symbol */
#define STB_NUM 3

#define STB_LOOS 10 /* Operating system specific range */
#define STB_HIOS 12
#define STB_LOPROC 13 /* Processor-specific range */
#define STB_HIPROC 15

/* st_info: Symbol Types */
#define STT_NOTYPE 0  /* Type not specified */
#define STT_OBJECT 1  /* Associated with a data object */
#define STT_FUNC 2    /* Associated with a function */
#define STT_SECTION 3 /* Associated with a section */
#define STT_FILE 4    /* Associated with a file name */
#define STT_COMMON 5  /* Uninitialised common block */
#define STT_TLS 6     /* Thread local data object */
#define STT_NUM 7

#define STT_LOOS 10      /* Operating system specific range */
#define STT_GNU_IFUNC 10 /* GNU extension: indirect function */
#define STT_HIOS 12
#define STT_LOPROC 13 /* Processor-specific range */
#define STT_HIPROC 15

/* st_other: Visibility Types */
#define STV_DEFAULT 0   /* use binding type */
#define STV_INTERNAL 1  /* not referenced from outside */
#define STV_HIDDEN 2    /* not visible, may be used via ptr */
#define STV_PROTECTED 3 /* visible, not preemptible */
#define STV_EXPORTED 4
#define STV_SINGLETON 5
#define STV_ELIMINATE 6

/* st_info/st_other utility macros */
#define ELF_ST_BIND(info) ((uint32_t)(info) >> 4)
#define ELF_ST_TYPE(info) ((uint32_t)(info)&0xf)
#define ELF_ST_INFO(bind, type) ((Elf_Byte)(((bind) << 4) | ((type)&0xf)))
#define ELF_ST_VISIBILITY(other) ((uint32_t)(other)&3)

/*
 * Special section indexes
 */
#define SHN_UNDEF 0 /* Undefined section */

#define SHN_LORESERVE 0xff00 /* Reserved range */
#define SHN_ABS 0xfff1       /*  Absolute symbols */
#define SHN_COMMON 0xfff2    /*  Common symbols */
#define SHN_XINDEX 0xffff    /* Escape -- index stored elsewhere */
#define SHN_HIRESERVE 0xffff

#define SHN_LOPROC 0xff00 /* Processor-specific range */
#define SHN_HIPROC 0xff1f
#define SHN_LOOS 0xff20 /* Operating system specific range */
#define SHN_HIOS 0xff3f

#define SHN_MIPS_ACOMMON 0xff00
#define SHN_MIPS_TEXT 0xff01
#define SHN_MIPS_DATA 0xff02
#define SHN_MIPS_SCOMMON 0xff03

/*
 * Relocation Entries
 */
typedef struct {
  Elf32_Word r_offset; /* where to do it */
  Elf32_Word r_info;   /* index & type of relocation */
} Elf32_Rel;

typedef struct {
  Elf32_Word r_offset;  /* where to do it */
  Elf32_Word r_info;    /* index & type of relocation */
  Elf32_Sword r_addend; /* adjustment value */
} Elf32_Rela;

/* r_info utility macros */
#define ELF32_R_SYM(info) ((info) >> 8)
#define ELF32_R_TYPE(info) ((info)&0xff)
#define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type))

typedef struct {
  Elf64_Addr r_offset; /* where to do it */
  Elf64_Xword r_info;  /* index & type of relocation */
} Elf64_Rel;

typedef struct {
  Elf64_Addr r_offset;   /* where to do it */
  Elf64_Xword r_info;    /* index & type of relocation */
  Elf64_Sxword r_addend; /* adjustment value */
} Elf64_Rela;

/* r_info utility macros */
#define ELF64_R_SYM(info) ((info) >> 32)
#define ELF64_R_TYPE(info) ((info)&0xffffffff)
#define ELF64_R_INFO(sym, type) (((sym) << 32) + (type))

/*
 * Move entries
 */
typedef struct {
  Elf32_Lword m_value;  /* symbol value */
  Elf32_Word m_info;    /* size + index */
  Elf32_Word m_poffset; /* symbol offset */
  Elf32_Half m_repeat;  /* repeat count */
  Elf32_Half m_stride;  /* stride info */
} Elf32_Move;

#define ELF32_M_SYM(info) ((info) >> 8)
#define ELF32_M_SIZE(info) ((info)&0xff)
#define ELF32_M_INFO(sym, size) (((sym) << 8) + (unsigned char)(size))

typedef struct {
  Elf64_Lword m_value;   /* symbol value */
  Elf64_Xword m_info;    /* size + index */
  Elf64_Xword m_poffset; /* symbol offset */
  Elf64_Word m_repeat;   /* repeat count */
  Elf64_Word m_stride;   /* stride info */
} Elf64_Move;

#define ELF64_M_SYM(info) ((info) >> 8)
#define ELF64_M_SIZE(info) ((info)&0xff)
#define ELF64_M_INFO(sym, size) (((sym) << 8) + (unsigned char)(size))

/*
 * Hardware/software capabilities entry
 */
typedef struct {
  Elf32_Word c_tag; /* entry tag value */
  union {
    Elf32_Addr c_ptr;
    Elf32_Word c_val;
  } c_un;
} Elf32_Cap;

typedef struct {
  Elf64_Xword c_tag; /* entry tag value */
  union {
    Elf64_Addr c_ptr;
    Elf64_Xword c_val;
  } c_un;
} Elf64_Cap;

/*
 * Dynamic Section structure array
 */
typedef struct {
  Elf32_Word d_tag; /* entry tag value */
  union {
    Elf32_Addr d_ptr;
    Elf32_Word d_val;
  } d_un;
} Elf32_Dyn;

typedef struct {
  Elf64_Xword d_tag; /* entry tag value */
  union {
    Elf64_Addr d_ptr;
    Elf64_Xword d_val;
  } d_un;
} Elf64_Dyn;

/* d_tag */
#define DT_NULL 0          /* Marks end of dynamic array */
#define DT_NEEDED 1        /* Name of needed library (DT_STRTAB offset) */
#define DT_PLTRELSZ 2      /* Size, in bytes, of relocations in PLT */
#define DT_PLTGOT 3        /* Address of PLT and/or GOT */
#define DT_HASH 4          /* Address of symbol hash table */
#define DT_STRTAB 5        /* Address of string table */
#define DT_SYMTAB 6        /* Address of symbol table */
#define DT_RELA 7          /* Address of Rela relocation table */
#define DT_RELASZ 8        /* Size, in bytes, of DT_RELA table */
#define DT_RELAENT 9       /* Size, in bytes, of one DT_RELA entry */
#define DT_STRSZ 10        /* Size, in bytes, of DT_STRTAB table */
#define DT_SYMENT 11       /* Size, in bytes, of one DT_SYMTAB entry */
#define DT_INIT 12         /* Address of initialization function */
#define DT_FINI 13         /* Address of termination function */
#define DT_SONAME 14       /* Shared object name (DT_STRTAB offset) */
#define DT_RPATH 15        /* Library search path (DT_STRTAB offset) */
#define DT_SYMBOLIC 16     /* Start symbol search within local object */
#define DT_REL 17          /* Address of Rel relocation table */
#define DT_RELSZ 18        /* Size, in bytes, of DT_REL table */
#define DT_RELENT 19       /* Size, in bytes, of one DT_REL entry */
#define DT_PLTREL 20       /* Type of PLT relocation entries */
#define DT_DEBUG 21        /* Used for debugging; unspecified */
#define DT_TEXTREL 22      /* Relocations might modify non-writable seg */
#define DT_JMPREL 23       /* Address of relocations associated with PLT */
#define DT_BIND_NOW 24     /* Process all relocations at load-time */
#define DT_INIT_ARRAY 25   /* Address of initialization function array */
#define DT_FINI_ARRAY 26   /* Size, in bytes, of DT_INIT_ARRAY array */
#define DT_INIT_ARRAYSZ 27 /* Address of termination function array */
#define DT_FINI_ARRAYSZ 28 /* Size, in bytes, of DT_FINI_ARRAY array*/
#define DT_RUNPATH 29      /* overrides DT_RPATH */
#define DT_FLAGS                                                               \
  30 /* Encodes ORIGIN, SYMBOLIC, TEXTREL, BIND_NOW, STATIC_TLS */
#define DT_ENCODING 31        /* ??? */
#define DT_PREINIT_ARRAY 32   /* Address of pre-init function array */
#define DT_PREINIT_ARRAYSZ 33 /* Size, in bytes, of DT_PREINIT_ARRAY array */
#define DT_NUM 34

#define DT_LOOS 0x60000000       /* Operating system specific range */
#define DT_VERSYM 0x6ffffff0     /* Symbol versions */
#define DT_FLAGS_1 0x6ffffffb    /* ELF dynamic flags */
#define DT_VERDEF 0x6ffffffc     /* Versions defined by file */
#define DT_VERDEFNUM 0x6ffffffd  /* Number of versions defined by file */
#define DT_VERNEED 0x6ffffffe    /* Versions needed by file */
#define DT_VERNEEDNUM 0x6fffffff /* Number of versions needed by file */
#define DT_HIOS 0x6fffffff
#define DT_LOPROC 0x70000000 /* Processor-specific range */
#define DT_HIPROC 0x7fffffff

/* Flag values for DT_FLAGS */
#define DF_ORIGIN 0x00000001     /* uses $ORIGIN */
#define DF_SYMBOLIC 0x00000002   /* */
#define DF_TEXTREL 0x00000004    /* */
#define DF_BIND_NOW 0x00000008   /* */
#define DF_STATIC_TLS 0x00000010 /* */

/* Flag values for DT_FLAGS_1 */
#define DF_1_NOW 0x00000001        /* Same as DF_BIND_NOW */
#define DF_1_GLOBAL 0x00000002     /* Unused */
#define DF_1_GROUP 0x00000004      /* Is member of group */
#define DF_1_NODELETE 0x00000008   /* Cannot be deleted from process */
#define DF_1_LOADFLTR 0x00000010   /* Immediate loading of filters */
#define DF_1_INITFIRST 0x00000020  /* init/fini takes priority */
#define DF_1_NOOPEN 0x00000040     /* Do not allow loading on dlopen() */
#define DF_1_ORIGIN 0x00000080     /* Require $ORIGIN processing */
#define DF_1_DIRECT 0x00000100     /* Enable direct bindings */
#define DF_1_INTERPOSE 0x00000400  /* Is an interposer */
#define DF_1_NODEFLIB 0x00000800   /* Ignore default library search path */
#define DF_1_NODUMP 0x00001000     /* Cannot be dumped with dldump(3C) */
#define DF_1_CONFALT 0x00002000    /* Configuration alternative */
#define DF_1_ENDFILTEE 0x00004000  /* Filtee ends filter's search */
#define DF_1_DISPRELDNE 0x00008000 /* Did displacement relocation */
#define DF_1_DISPRELPND 0x00010000 /* Pending displacement relocation */
#define DF_1_NODIRECT 0x00020000   /* Has non-direct bindings */
#define DF_1_IGNMULDEF 0x00040000  /* Used internally */
#define DF_1_NOKSYMS 0x00080000    /* Used internally */
#define DF_1_NOHDR 0x00100000      /* Used internally */
#define DF_1_EDITED 0x00200000     /* Has been modified since build */
#define DF_1_NORELOC 0x00400000    /* Used internally */
#define DF_1_SYMINTPOSE 0x00800000 /* Has individual symbol interposers */
#define DF_1_GLOBAUDIT 0x01000000  /* Require global auditing */
#define DF_1_SINGLETON 0x02000000  /* Has singleton symbols */
#define DF_1_STUB 0x04000000       /* Stub */
#define DF_1_PIE 0x08000000        /* Position Independent Executable */

/*
 * Auxiliary Vectors
 */
typedef struct {
  Elf32_Word a_type; /* 32-bit id */
  Elf32_Word a_v;    /* 32-bit id */
} Aux32Info;

typedef struct {
  Elf64_Word a_type; /* 32-bit id */
  Elf64_Xword a_v;   /* 64-bit id */
} Aux64Info;

/* a_type */
#define AT_NULL 0         /* Marks end of array */
#define AT_IGNORE 1       /* No meaning, a_un is undefined */
#define AT_EXECFD 2       /* Open file descriptor of object file */
#define AT_PHDR 3         /* &phdr[0] */
#define AT_PHENT 4        /* sizeof(phdr[0]) */
#define AT_PHNUM 5        /* # phdr entries */
#define AT_PAGESZ 6       /* PAGESIZE */
#define AT_BASE 7         /* Interpreter base addr */
#define AT_FLAGS 8        /* Processor flags */
#define AT_ENTRY 9        /* Entry address of executable */
#define AT_DCACHEBSIZE 10 /* Data cache block size */
#define AT_ICACHEBSIZE 11 /* Instruction cache block size */
#define AT_UCACHEBSIZE 12 /* Unified cache block size */
#define AT_STACKBASE 13   /* Base address of the main thread */

/* Vendor specific */
#define AT_MIPS_NOTELF 10 /* XXX a_val != 0 -> MIPS XCOFF executable */

#define AT_EUID 2000 /* euid (solaris compatible numbers) */
#define AT_RUID 2001 /* ruid (solaris compatible numbers) */
#define AT_EGID 2002 /* egid (solaris compatible numbers) */
#define AT_RGID 2003 /* rgid (solaris compatible numbers) */

/* Solaris kernel specific */
#define AT_SUN_LDELF 2004   /* dynamic linker's ELF header */
#define AT_SUN_LDSHDR 2005  /* dynamic linker's section header */
#define AT_SUN_LDNAME 2006  /* dynamic linker's name */
#define AT_SUN_LPGSIZE 2007 /* large pagesize */

/* Other information */
#define AT_SUN_PLATFORM 2008    /* sysinfo(SI_PLATFORM) */
#define AT_SUN_HWCAP 2009       /* process hardware capabilities */
#define AT_SUN_IFLUSH 2010      /* do we need to flush the instruction cache? */
#define AT_SUN_CPU 2011         /* CPU name */
                                /* ibcs2 emulation band aid */
#define AT_SUN_EMUL_ENTRY 2012  /* coff entry point */
#define AT_SUN_EMUL_EXECFD 2013 /* coff file descriptor */
                                /* Executable's fully resolved name */
#define AT_SUN_EXECNAME 2014

/*
 * The header for GNU-style hash sections.
 */
typedef struct {
  uint32_t gh_nbuckets;  /* Number of hash buckets. */
  uint32_t gh_symndx;    /* First visible symbol in .dynsym. */
  uint32_t gh_maskwords; /* #maskwords used in bloom filter. */
  uint32_t gh_shift2;    /* Bloom filter shift count. */
} Elf_GNU_Hash_Header;

/*
 * Note Headers
 */
typedef struct {
  Elf32_Word n_namesz;
  Elf32_Word n_descsz;
  Elf32_Word n_type;
} Elf32_Nhdr;

typedef struct {
  Elf64_Word n_namesz;
  Elf64_Word n_descsz;
  Elf64_Word n_type;
} Elf64_Nhdr;

#define ELF_NOTE_GNU_NAMESZ 4
#define ELF_NOTE_GNU_NAME "GNU\0"

/*
 * GNU-specific note type: ABI tag
 * name: GNU\0
 * namesz: 4
 * desc:
 *	word[0]: OS tag
 *	word[1]: major version
 *	word[2]: minor version
 *	word[3]: teeny version
 * descsz: 16
 */
/* GNU-specific note name and description sizes */
#define ELF_NOTE_TYPE_ABI_TAG 1
#define ELF_NOTE_ABI_NAME ELF_NOTE_GNU_NAME
#define ELF_NOTE_ABI_NAMESZ ELF_NOTE_GNU_NAMESZ
#define ELF_NOTE_ABI_DESCSZ 16
/* GNU-specific OS/version value stuff */
#define ELF_NOTE_ABI_OS_LINUX 0
#define ELF_NOTE_ABI_OS_HURD 1
#define ELF_NOTE_ABI_OS_SOLARIS 2
#define ELF_NOTE_ABI_OS_KFREEBSD 3
#define ELF_NOTE_ABI_OS_KNETBSD 4

/* Old gcc style, under the ABI tag */
#define ELF_NOTE_OGCC_NAMESZ 8
#define ELF_NOTE_OGCC_NAME "01.01\0\0\0\0"
#define ELF_NOTE_OGCC_DESCSZ 0

/*
 * GNU-specific note type: Hardware capabilities
 * name: GNU\0
 * namesz: 4
 * desc:
 *	word[0]: Number of entries
 *	word[1]: Bitmask of enabled entries
 *	Followed by a byte id, and a NUL terminated string per entry
 * descsz: variable
 */
#define ELF_NOTE_TYPE_GNU_HWCAP 2

/*
 * GNU-specific note type: Build ID generated by ld
 * name: GNU\0
 * desc:
 *	word[0..4] SHA1 [default]
 * or
 *	word[0..3] md5 or uuid
 * descsz: 16 or 20
 */
#define ELF_NOTE_TYPE_GNU_BUILD_ID 3

/* SuSE-specific note type: ABI
 * name: SuSE\0
 * namesz: 5
 * desc:
 *	half[0] = MMmm
 *
 *	M = product major version
 *	m = product minor version
 * descsz: 2
 */
#define ELF_NOTE_TYPE_SUSE_TAG 1
/* SuSE-specific note name and description sizes */
#define ELF_NOTE_SUSE_NAMESZ 5
#define ELF_NOTE_SUSE_DESCSZ 2
/* SuSE-specific note name */
#define ELF_NOTE_SUSE_NAME "SuSE\0"

/* SuSE-specific note type: version
 * name: SuSE\0\0\0\0
 * namesz: 8
 * desc:
 *	word[0] = VVTTMMmm
 *
 *	V = version of following data
 *	T = product type: [box, sles, nld, whatever]
 *	M = product major version
 *	m = product minor version
 * descsz: 8
 */
#define ELF_NOTE_TYPE_SUSE_VERSION_TAG 0x45537553 /* SuSE in LE */
/* SuSE-specific note name and description sizes */
#define ELF_NOTE_SUSE_VERSION_NAMESZ 8
#define ELF_NOTE_SUSE_VERSION_DESCSZ 8
/* SuSE-specific note name */
#define ELF_NOTE_SUSE_VERSION_NAME "SuSE\0\0\0\0"

/* Go-specific note type: buildid
 * name: Go\0\0
 * namesz: 4
 * desc:
 *	words[10]
 * descsz: 40
 */
#define ELF_NOTE_TYPE_GO_BUILDID_TAG 4
#define ELF_NOTE_GO_BUILDID_NAMESZ 4
#define ELF_NOTE_GO_BUILDID_DESCSZ 40
#define ELF_NOTE_GO_BUILDID_NAME "Go\0\0"

/* NetBSD-specific note type: NetBSD ABI version.
 * name: NetBSD\0\0
 * namesz: 8
 * desc:
 *	word[0]: MMmmrrpp00
 *
 *	M = major version
 *	m = minor version
 *	r = release ["",A-Z,Z[A-Z] but numeric]
 *	p = patchlevel
 * descsz: 4
 */
#define ELF_NOTE_TYPE_NETBSD_TAG 1
/* NetBSD-specific note name and description sizes */
#define ELF_NOTE_NETBSD_NAMESZ 7
#define ELF_NOTE_NETBSD_DESCSZ 4
/* NetBSD-specific note name */
#define ELF_NOTE_NETBSD_NAME "NetBSD\0\0"

/* NetBSD-specific note type: Emulation (obsolete; last used early 2000)
 * name: NetBSD\0\0
 * namesz: 8
 * desc:
 *	"netbsd\0"
 *
 * descsz: 8
 */
#define ELF_NOTE_TYPE_NETBSD_EMUL_TAG 2
#define ELF_NOTE_NETBSD_EMUL_NAMESZ 7
#define ELF_NOTE_NETBSD_EMUL_DESCSZ 7
/* NetBSD-specific note name */
#define ELF_NOTE_NETBSD_EMUL_NAME "NetBSD\0\0"

/*
 * NetBSD-specific note type: PaX.
 * There should be 1 NOTE per executable.
 * name: PaX\0
 * namesz: 4
 * desc:
 *	word[0]: capability bitmask
 * descsz: 4
 */
#define ELF_NOTE_TYPE_PAX_TAG 3
#define ELF_NOTE_PAX_MPROTECT 0x01   /* Force enable Mprotect */
#define ELF_NOTE_PAX_NOMPROTECT 0x02 /* Force disable Mprotect */
#define ELF_NOTE_PAX_GUARD 0x04      /* Force enable Segvguard */
#define ELF_NOTE_PAX_NOGUARD 0x08    /* Force disable Segvguard */
#define ELF_NOTE_PAX_ASLR 0x10       /* Force enable ASLR */
#define ELF_NOTE_PAX_NOASLR 0x20     /* Force disable ASLR */
#define ELF_NOTE_PAX_NAMESZ 4
#define ELF_NOTE_PAX_NAME "PaX\0"
#define ELF_NOTE_PAX_DESCSZ 4

/*
 * NetBSD-specific core file information.
 *
 * NetBSD ELF core files use notes to provide information about
 * the process's state.	 The note name is "NetBSD-CORE" for
 * information that is global to the process, and "NetBSD-CORE@nn",
 * where "nn" is the lwpid of the LWP that the information belongs
 * to (such as register state).
 *
 * We use the following note identifiers:
 *
 *	ELF_NOTE_NETBSD_CORE_PROCINFO
 *		Note is a "netbsd_elfcore_procinfo" structure.
 *	ELF_NOTE_NETBSD_CORE_AUXV
 *		Note is an array of AuxInfo structures.
 *
 * We also use ptrace(2) request numbers (the ones that exist in
 * machine-dependent space) to identify register info notes.  The
 * info in such notes is in the same format that ptrace(2) would
 * export that information.
 *
 * Please try to keep the members of this structure nicely aligned,
 * and if you add elements, add them to the end and bump the version.
 */

#define ELF_NOTE_NETBSD_CORE_NAME "NetBSD-CORE"

#define ELF_NOTE_NETBSD_CORE_PROCINFO 1
#define ELF_NOTE_NETBSD_CORE_AUXV 2

#define NETBSD_ELFCORE_PROCINFO_VERSION 1

struct netbsd_elfcore_procinfo {
  /* Version 1 fields start here. */
  uint32_t cpi_version;      /* our version */
  uint32_t cpi_cpisize;      /* sizeof(this struct) */
  uint32_t cpi_signo;        /* killing signal */
  uint32_t cpi_sigcode;      /* signal code */
  uint32_t cpi_sigpend[4];   /* pending signals */
  uint32_t cpi_sigmask[4];   /* blocked signals */
  uint32_t cpi_sigignore[4]; /* ignored signals */
  uint32_t cpi_sigcatch[4];  /* caught signals */
  int32_t cpi_pid;           /* process ID */
  int32_t cpi_ppid;          /* parent process ID */
  int32_t cpi_pgrp;          /* process group ID */
  int32_t cpi_sid;           /* session ID */
  uint32_t cpi_ruid;         /* real user ID */
  uint32_t cpi_euid;         /* effective user ID */
  uint32_t cpi_svuid;        /* saved user ID */
  uint32_t cpi_rgid;         /* real group ID */
  uint32_t cpi_egid;         /* effective group ID */
  uint32_t cpi_svgid;        /* saved group ID */
  uint32_t cpi_nlwps;        /* number of LWPs */
  int8_t cpi_name[32];       /* copy of p->p_comm */
  /* Add version 2 fields below here. */
  int32_t cpi_siglwp; /* LWP target of killing signal */
};

/*
 * NetBSD-specific note type: MACHINE_ARCH.
 * There should be 1 NOTE per executable.
 * name:	NetBSD\0
 * namesz:	7
 * desc:	string
 * descsz:	variable
 */
#define ELF_NOTE_TYPE_MARCH_TAG 5
/* NetBSD-specific note name and description sizes */
#define ELF_NOTE_MARCH_NAMESZ ELF_NOTE_NETBSD_NAMESZ
/* NetBSD-specific note name */
#define ELF_NOTE_MARCH_NAME ELF_NOTE_NETBSD_NAME

/*
 * NetBSD-specific note type: MCMODEL
 * There should be 1 NOTE per executable.
 * name:	NetBSD\0
 * namesz:	7
 * code model:	string
 */

#define ELF_NOTE_TYPE_MCMODEL_TAG 6
/* NetBSD-specific note name and description sizes */
#define ELF_NOTE_MCMODEL_NAMESZ ELF_NOTE_NETBSD_NAMESZ
/* NetBSD-specific note name */
#define ELF_NOTE_MCMODEL_NAME ELF_NOTE_NETBSD_NAME

#if !defined(ELFSIZE)
#define ELFSIZE KERN_ELFSIZE
#endif

#if defined(ELFSIZE)
#define CONCAT(x, y) __CONCAT(x, y)
#define ELFNAME(x) CONCAT(elf, CONCAT(ELFSIZE, CONCAT(_, x)))
#define ELFNAME2(x, y) CONCAT(x, CONCAT(_elf, CONCAT(ELFSIZE, CONCAT(_, y))))
#define ELFNAMEEND(x) CONCAT(x, CONCAT(_elf, ELFSIZE))
#define ELFDEFNNAME(x) CONCAT(ELF, CONCAT(ELFSIZE, CONCAT(_, x)))
#define ElfW(x) CONCAT(Elf, CONCAT(ELFSIZE, CONCAT(_, x)))
#endif

#if defined(ELFSIZE) && (ELFSIZE == 32)
#define Elf_Ehdr Elf32_Ehdr
#define Elf_Phdr Elf32_Phdr
#define Elf_Shdr Elf32_Shdr
#define Elf_Sym Elf32_Sym
#define Elf_Rel Elf32_Rel
#define Elf_Rela Elf32_Rela
#define Elf_Dyn Elf32_Dyn
#define Elf_Word Elf32_Word
#define Elf_Sword Elf32_Sword
#define Elf_Half Elf32_Half
#define Elf_Addr Elf32_Addr
#define Elf_Off Elf32_Off
#define Elf_SOff Elf32_SOff
#define Elf_Nhdr Elf32_Nhdr
#define Elf_Verdef Elf32_Verdef
#define Elf_Verdaux Elf32_Verdaux
#define Elf_Verneed Elf32_Verneed
#define Elf_Vernaux Elf32_Vernaux
#define Elf_Versym Elf32_Versym

#define ELF_R_SYM ELF32_R_SYM
#define ELF_R_TYPE ELF32_R_TYPE
#define ELFCLASS ELFCLASS32

#define AuxInfo Aux32Info
#elif defined(ELFSIZE) && (ELFSIZE == 64)
#define Elf_Ehdr Elf64_Ehdr
#define Elf_Phdr Elf64_Phdr
#define Elf_Shdr Elf64_Shdr
#define Elf_Sym Elf64_Sym
#define Elf_Rel Elf64_Rel
#define Elf_Rela Elf64_Rela
#define Elf_Dyn Elf64_Dyn
#define Elf_Word Elf64_Word
#define Elf_Sword Elf64_Sword
#define Elf_Half Elf64_Half
#define Elf_Addr Elf64_Addr
#define Elf_Off Elf64_Off
#define Elf_SOff Elf64_SOff
#define Elf_Nhdr Elf64_Nhdr
#define Elf_Verdef Elf64_Verdef
#define Elf_Verdaux Elf64_Verdaux
#define Elf_Verneed Elf64_Verneed
#define Elf_Vernaux Elf64_Vernaux
#define Elf_Versym Elf64_Versym

#define ELF_R_SYM ELF64_R_SYM
#define ELF_R_TYPE ELF64_R_TYPE
#define ELFCLASS ELFCLASS64

#define AuxInfo Aux64Info
#endif

#ifndef Elf_Symindx
#define Elf_Symindx uint32_t
#endif

#define ELF32_ST_BIND(info) ELF_ST_BIND(info)
#define ELF32_ST_TYPE(info) ELF_ST_TYPE(info)
#define ELF32_ST_INFO(bind, type) ELF_ST_INFO(bind, type)
#define ELF32_ST_VISIBILITY(other) ELF_ST_VISIBILITY(other)

#define ELF64_ST_BIND(info) ELF_ST_BIND(info)
#define ELF64_ST_TYPE(info) ELF_ST_TYPE(info)
#define ELF64_ST_INFO(bind, type) ELF_ST_INFO(bind, type)
#define ELF64_ST_VISIBILITY(other) ELF_ST_VISIBILITY(other)

typedef struct {
  Elf32_Half si_boundto; /* direct bindings - symbol bound to */
  Elf32_Half si_flags;   /* per symbol flags */
} Elf32_Syminfo;

typedef struct {
  Elf64_Word si_boundto; /* direct bindings - symbol bound to */
  Elf64_Word si_flags;   /* per symbol flags */
} Elf64_Syminfo;

#define SYMINFO_FLG_DIRECT                                                     \
  0x0001                            /* symbol ref has direct association       \
                                       to object containing definition */
#define SYMINFO_FLG_PASSTHRU 0x0002 /* ignored - see SYMINFO_FLG_FILTER */
#define SYMINFO_FLG_COPY 0x0004     /* symbol is a copy-reloc */
#define SYMINFO_FLG_LAZYLOAD                                                   \
  0x0008 /* object containing defn should be                                   \
            lazily-loaded */
#define SYMINFO_FLG_DIRECTBIND                                                 \
  0x0010 /* ref should be bound directly to                                    \
            object containing definition */
#define SYMINFO_FLG_NOEXTDIRECT                                                \
  0x0020                             /* don't let an external reference        \
                                        directly bind to this symbol */
#define SYMINFO_FLG_FILTER 0x0002    /* symbol ref is associated to a */
#define SYMINFO_FLG_AUXILIARY 0x0040 /*	standard or auxiliary filter */

#define SYMINFO_BT_SELF 0xffff       /* symbol bound to self */
#define SYMINFO_BT_PARENT 0xfffe     /* symbol bound to parent */
#define SYMINFO_BT_NONE 0xfffd       /* no special symbol binding */
#define SYMINFO_BT_EXTERN 0xfffc     /* symbol defined as external */
#define SYMINFO_BT_LOWRESERVE 0xff00 /* beginning of reserved entries */

#define SYMINFO_NONE 0 /* Syminfo version */
#define SYMINFO_CURRENT 1
#define SYMINFO_NUM 2

/*
 * These constants are used for Elf32_Verdef struct's version number.
 */
#define VER_DEF_NONE 0
#define VER_DEF_CURRENT 1

/*
 * These constants are used for Elf32_Verdef struct's vd_ndx.
 */
#define VER_DEF_IDX(x) VER_NDX(x)

/*
 * These constants are used for Elf32_Verdef struct's vd_flags.
 */
#define VER_FLG_BASE 0x1
#define VER_FLG_WEAK 0x2

/*
 * These are used in an Elf32_Versym field.
 */
#define VER_NDX_LOCAL 0
#define VER_NDX_GLOBAL 1
#define VER_NDX_GIVEN 2

/*
 * These constants are used for Elf32_Verneed struct's version number.
 */
#define VER_NEED_NONE 0
#define VER_NEED_CURRENT 1

/*
 * These constants are used for Elf32_Vernaux struct's vna_other.
 */
#define VER_NEED_HIDDEN VER_NDX_HIDDEN
#define VER_NEED_IDX(x) VER_NDX(x)

/* index */
#define VER_NDX_HIDDEN 0x8000
#define VER_NDX(x) ((x) & ~VER_NDX_HIDDEN)

/*
 * GNU Extension hidding symbol
 */
#define VERSYM_HIDDEN 0x8000
#define VERSYM_VERSION 0x7fff

#define ELF_VER_CHR '@'

/*
 * These are current size independent.
 */

typedef struct {
  Elf32_Half vd_version; /* version number of structure */
  Elf32_Half vd_flags;   /* flags (VER_FLG_*) */
  Elf32_Half vd_ndx;     /* version index */
  Elf32_Half vd_cnt;     /* number of verdaux entries */
  Elf32_Word vd_hash;    /* hash of name */
  Elf32_Word vd_aux;     /* offset to verdaux entries */
  Elf32_Word vd_next;    /* offset to next verdef */
} Elf32_Verdef;
typedef Elf32_Verdef Elf64_Verdef;

typedef struct {
  Elf32_Word vda_name; /* string table offset of name */
  Elf32_Word vda_next; /* offset to verdaux */
} Elf32_Verdaux;
typedef Elf32_Verdaux Elf64_Verdaux;

typedef struct {
  Elf32_Half vn_version; /* version number of structure */
  Elf32_Half vn_cnt;     /* number of vernaux entries */
  Elf32_Word vn_file;    /* string table offset of library name*/
  Elf32_Word vn_aux;     /* offset to vernaux entries */
  Elf32_Word vn_next;    /* offset to next verneed */
} Elf32_Verneed;
typedef Elf32_Verneed Elf64_Verneed;

typedef struct {
  Elf32_Word vna_hash;  /* Hash of dependency name */
  Elf32_Half vna_flags; /* flags (VER_FLG_*) */
  Elf32_Half vna_other; /* unused */
  Elf32_Word vna_name;  /* string table offset to version name*/
  Elf32_Word vna_next;  /* offset to next vernaux */
} Elf32_Vernaux;
typedef Elf32_Vernaux Elf64_Vernaux;

typedef struct {
  Elf32_Half vs_vers;
} Elf32_Versym;
typedef Elf32_Versym Elf64_Versym;

#ifdef _KERNEL

#define ELF_MAXPHNUM 128

#endif /* !_KERNEL */

#endif /* !_SYS_EXEC_ELF_H_ */
