/* $NetBSD: exec_elf.h,v 1.37.4.1 2000/07/26 23:57:06 mycroft 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * 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_ #ifndef _SYS_TYPES_H_ #include #endif /* * ELF Header */ #define ELF_NIDENT 16 struct elf_ehdr { unsigned char e_ident[ELF_NIDENT]; /* Id bytes */ unsigned short e_type; /* file type */ unsigned short e_machine; /* machine type */ unsigned int e_version; /* version number */ unsigned int e_entry; /* entry point */ unsigned int e_phoff; /* Program header table offset */ unsigned int e_shoff; /* Section header table offset */ unsigned int e_flags; /* Processor flags (currently unused, should be 0) */ unsigned short e_ehsize; /* sizeof elf_ehdr */ unsigned short e_phentsize; /* Program header entry size */ unsigned short e_phnum; /* Number of program headers */ unsigned short e_shentsize; /* Section header entry size */ unsigned short e_shnum; /* Number of section headers */ unsigned short e_shstrndx; /* String table index */ }; /* e_ident offsets */ #define EI_MAG0 0 /* first byte of magic number */ #define ELFMAG0 0x7f #define EI_MAG1 1 /* second byte of magic number */ #define ELFMAG1 'E' #define EI_MAG2 2 /* third byte of magic number */ #define ELFMAG2 'L' #define EI_MAG3 3 /* fourth byte of magic number */ #define ELFMAG3 'F' #define EI_CLASS 4 /* 5:th byte: File class */ #define ELFCLASSNONE 0 /* Invalid class */ #define ELFCLASS32 1 /* 32-bit objects */ #define ELFCLASS64 2 /* 64-bit objects */ #define ELFCLASSNUM 3 #define EI_DATA 5 /* 6:th byte: Data encoding */ #define ELFDATANONE 0 /* Unknown data format */ #define ELFDATA2LSB 1 /* two's complement, little-endian */ #define ELFDATA2MSB 2 /* two's complement, big-endian */ #define EI_VERSION 6 /* Version number of the ELF specification */ #define EV_NONE 0 /* Invalid version */ #define EV_CURRENT 1 /* Current version */ #define EV_NUM 2 #define EI_OSABI 7 /* Operating system/ABI identification */ #define ELFOSABI_SYSV 0 /* UNIX System V ABI */ #define ELFOSABI_HPUX 1 /* HP-UX operating system */ #define ELFOSABI_NETBSD /* NetBSD ABI */ #define ELFOSABI_LINUX /* Linux ABI */ #define ELFOSABI_SOLARIS /* Solaris ABI */ #define ELFOSABI_FREEBSD /* FreeBSD ABI */ #define ELFOSABI_ARM /* ARM architecture ABI */ #define ELFOSABI_STANDALONE 255 /* Stand-alone (embedded) application */ #define EI_ABIVERSION 8 /* ABI version */ #define EI_PAD 9 /* Start of padding bytes up to EI_NIDENT*/ #define ELFMAG "\177ELF" #define SELFMAG 4 /* e_type */ #define ET_NONE 0 /* Unknown file type */ #define ET_REL 1 /* A Relocatable file */ #define ET_EXEC 2 /* An Executable file */ #define ET_DYN 3 /* A Shared object file */ #define ET_CORE 4 /* A 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 */ #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 */ #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_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_VAX 75 /* DIGITAL VAX */ #define EM_ALPHA_EXP 36902 /* used by NetBSD/alpha; obsolete */ #define EM_NUM 36903 /* * ELF Program Header */ struct elf_phdr { unsigned int p_type; /* entry type */ unsigned int p_offset; /* file offset */ unsigned int p_vaddr; /* virtual address */ unsigned int p_paddr; /* physical address (reserved, 0) */ unsigned int p_filesz; /* file size of segment (may be 0) */ unsigned int p_memsz; /* memory size of segment (may be 0) */ unsigned int p_flags; /* flags */ unsigned int p_align; /* memory & file alignment */ }; /* 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_NUM 7 #define PT_LOPROC 0x70000000 /* Start of processor-specific semantics */ #define PT_HIPROC 0x7fffffff /* end of processor-specific semantics */ #define PT_GNU_STACK /* GNU stack extension */ /* p_flags */ #define PF_R 0x4 /* Segment is readable */ #define PF_W 0x2 /* Segment is writable */ #define PF_X 0x1 /* Segment is executable */ /* A text segment commonly have PF_X|PF_R, a data segment PF_X|PF_W and PF_R */ #define PF_MASKOS 0x0ff00000 /* Opersting system specific values */ #define PF_MASKPROC 0xf0000000 /* Processor-specific values */ #define PT_MIPS_REGINFO 0x70000000 /* * Section Headers */ struct elf_shdr { unsigned int sh_name; /* section name (.shstrtab index) */ unsigned int sh_type; /* section type */ unsigned int sh_flags; /* section flags */ unsigned int sh_addr; /* virtual address */ unsigned int sh_offset; /* file offset */ unsigned int sh_size; /* section size */ unsigned int sh_link; /* link to another */ unsigned int sh_info; /* misc info */ unsigned int sh_addralign; /* memory alignment */ unsigned int sh_entsize; /* table entry size */ }; /* sh_type */ #define SHT_NULL 0 /* inactive */ #define SHT_PROGBITS 1 /* program defined contents */ #define SHT_SYMTAB 2 /* holds symbol table */ #define SHT_STRTAB 3 /* holds string table */ #define SHT_RELA 4 /* holds relocation info with explicit addends */ #define SHT_HASH 5 /* holds symbol hash table */ #define SHT_DYNAMIC 6 /* holds dynamic linking information */ #define SHT_NOTE 7 /* holds information marking */ #define SHT_NOBITS 8 /* holds a section that does not occupy space */ #define SHT_REL 9 /* holds relocation info without explicit addends */ #define SHT_SHLIB 10 /* reserved with unspecified semantics */ #define SHT_DYNSYM 11 /* holds a minimal set of dynamic linking symbols */ #define SHT_NUM 12 #define SHT_LOOS 0x60000000 /* Operating system specific range */ #define SHT_HIOS 0x6fffffff #define SHT_LOPROC 0x70000000 /* Processor-specific range */ #define SHT_HIPROC 0x7fffffff #define SHT_LOUSER 0x80000000 /* Application-specific range */ #define SHT_HIUSER 0xffffffff /* sh_flags */ #define SHF_WRITE 0x1 /* Section contains writable data */ #define SHF_ALLOC 0x2 /* Section occupies memory */ #define SHF_EXECINSTR 0x4 /* Section contains executable insns */ #define SHF_MASKOS 0x0f000000 /* Operating system specific values */ #define SHF_MASKPROC 0xf0000000 /* Processor-specific values */ /* * Symbol Table */ struct elf_sym { unsigned int st_name; /* Symbol name (.symtab index) */ unsigned int st_value; /* value of symbol */ unsigned int st_size; /* size of symbol */ unsigned char st_info; /* type / binding attrs */ unsigned char st_other; /* unused */ unsigned short st_shndx; /* section index of symbol */ }; /* Symbol Table index of the undefined symbol */ #define ELF_SYM_UNDEFINED 0 /* 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_NUM 5 #define STT_LOOS 10 /* Operating system specific range */ #define STT_HIOS 12 #define STT_LOPROC 13 /* Processor-specific range */ #define STT_HIPROC 15 /* st_info utility macros */ #define ELF_ST_BIND(info) ((unsigned int)(info) >> 4) #define ELF_ST_TYPE(info) ((unsigned int)(info) & 0xf) #define ELF_ST_INFO(bind,type) ((unsigned char)(((bind) << 4) | ((type) & 0xf))) /* * Special section indexes */ #define SHN_UNDEF 0 /* Undefined section */ #define SHN_LORESERVE 0xff00 /* Start of Reserved range */ #define SHN_ABS 0xfff1 /* Absolute symbols */ #define SHN_COMMON 0xfff2 /* Common symbols */ #define SHN_HIRESERVE 0xffff #define SHN_LOPROC 0xff00 /* Start of 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 */ struct elf_rel { unsigned int r_offset; /* where to do it */ unsigned int r_info; /* index & type of relocation */ }; struct elf_rela { unsigned int r_offset; /* where to do it */ unsigned int r_info; /* index & type of relocation */ int r_addend; /* adjustment value */ }; /* r_info utility macros */ #define ELF_R_SYM(info) ((info) >> 8) #define ELF_R_TYPE(info) ((info) & 0xff) #define ELF_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type)) /* * Dynamic Section structure array */ struct elf_dyn { unsigned int d_tag; /* entry tag value */ union { unsigned int d_ptr; unsigned int d_val; } d_un; }; /* 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_NUM 29 #define DT_LOOS 0x60000000 /* Operating system specific range */ #define DT_HIOS 0x6fffffff #define DT_LOPROC 0x70000000 /* Processor-specific range */ #define DT_HIPROC 0x7fffffff /* * Auxiliary Vectors */ struct elf_auxinfo { unsigned int a_type; /* 32-bit id */ unsigned int a_v; /* 32-bit id */ }; /* 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 */ /* Vendor specific */ #define AT_MIPS_NOTELF 10 /* XXX a_val != 0 -> MIPS XCOFF executable */ #define AT_SUN_UID 2000 /* euid */ #define AT_SUN_RUID 2001 /* ruid */ #define AT_SUN_GID 2002 /* egid */ #define AT_SUN_RGID 2003 /* rgid */ /* 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 /* * Note Headers */ struct elf_nhdr { unsigned int n_namesz; unsigned int n_descsz; unsigned int n_type; }; #define ELF_NOTE_TYPE_OSVERSION 1 /* NetBSD-specific note type: Emulation name. desc is emul name string. */ #define ELF_NOTE_NETBSD_TYPE_EMULNAME 2 /* 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" /* GNU-specific note name and description sizes */ #define ELF_NOTE_GNU_NAMESZ 4 #define ELF_NOTE_GNU_DESCSZ 4 /* GNU-specific note name */ #define ELF_NOTE_GNU_NAME "GNU\0" /* GNU-specific OS/version value stuff */ #define ELF_NOTE_GNU_OSMASK (unsigned int)0xff000000 #define ELF_NOTE_GNU_OSLINUX (unsigned int)0x01000000 #define ELF_NOTE_GNU_OSMACH (unsigned int)0x00000000 #include #ifdef _KERNEL #define ELF_AUX_ENTRIES 8 /* Size of aux array passed to loader */ struct elf_args { unsigned int arg_entry; /* program entry point */ unsigned int arg_interp; /* Interpreter load address */ unsigned int arg_phaddr; /* program header address */ unsigned int arg_phentsize; /* Size of program header */ unsigned int arg_phnum; /* Number of program headers */ }; #ifndef _LKM #include "opt_execfmt.h" #endif int exec_elf_makecmds __P((struct proc *, struct exec_package *)); int elf_read_from __P((struct proc *, struct vnode *, u_long, caddr_t, int)); void *elf_copyargs __P((struct exec_package *, struct ps_strings *, void *, void *)); /* common */ int exec_elf_setup_stack __P((struct proc *, struct exec_package *)); #endif /* _KERNEL */ #endif /* !_SYS_EXEC_ELF_H_ */