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/*-
* Copyright (c) 1995-1996 Søren Schmidt
* All rights reserved.
*
* 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
* in this position and unchanged.
* 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. The name of the author may not be used to endorse or promote products
* derived from this software withough specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* $FreeBSD$
*/
#ifndef _IMGACT_ELF_H_
#define _IMGACT_ELF_H_
typedef u_int32_t Elf32_Addr;
typedef u_int32_t Elf32_Off;
typedef int32_t Elf32_Sword;
typedef u_int32_t Elf32_Word;
typedef u_int16_t Elf32_Half;
extern int elf_trace;
#define EI_NINDENT 16
typedef struct {
unsigned char e_ident[EI_NINDENT]; /* file id */
Elf32_Half e_type; /* 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; /* 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;
/*
* Values for e_indent entry in struct Elf32_Ehdr.
*/
#define EI_MAG0 0
#define EI_MAG1 1
#define EI_MAG2 2
#define EI_MAG3 3
#define EI_CLASS 4
#define EI_DATA 5
#define EI_VERSION 6
#define EI_SPARE 8
#define EI_BRAND 8
#define ELFMAG0 '\177'
#define ELFMAG1 'E'
#define ELFMAG2 'L'
#define ELFMAG3 'F'
#define ELFCLASSNONE 0 /* invalid class */
#define ELFCLASS32 1 /* 32bit object class */
#define ELFCLASS64 2 /* 64bit object class */
#define ELFDATANONE 0 /* invalid data encoding */
#define ELFDATA2LSB 1 /* little endian */
#define ELFDATA2MSB 2 /* big endian */
/*
* Values for e_version entry in struct Elf32_Ehdr.
*/
#define EV_NONE 0 /* invalid version */
#define EV_CURRENT 1 /* current version */
/*
* Values for e_type entry in struct Elf32_Ehdr.
*/
#define ET_NONE 0
#define ET_REL 1
#define ET_EXEC 2
#define ET_DYN 3
#define ET_CORE 4
#define ET_LOPROC 5
#define ET_HIPROC 6
/*
* Values for e_machine entry in struct Elf32_Ehdr.
*/
#define EM_NONE 0
#define EM_M32 1
#define EM_SPARC 2
#define EM_386 3
#define EM_68K 4
#define EM_88K 5
#define EM_486 6
#define EM_860 7
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;
/*
* Values for p_type entry in struct Elf32_Phdr.
*/
#define PT_NULL 0
#define PT_LOAD 1
#define PT_DYNAMIC 2
#define PT_INTERP 3
#define PT_NOTE 4
#define PT_SHLIB 5
#define PT_PHDR 6
#define PT_LOPROC 0x70000000
#define PT_HIPROC 0x7fffffff
/*
* Values for p_flags entry in struct Elf32_Phdr.
*/
#define PF_X 0x1
#define PF_W 0x2
#define PF_R 0x4
#define PF_MASKPROC 0xf0000000
/*
* Auxiliary vector entry on initial stack.
*/
typedef struct {
Elf32_Sword a_type;
Elf32_Word a_val;
} Elf32_Auxinfo;
#define AUXARGS_ENTRY(pos, id, val) {suword(pos++, id); suword(pos++, val);}
/*
* Values for a_type in struct Elf32_Auxinfo.
*/
#define AT_NULL 0 /* Terminates the vector */
#define AT_IGNORE 1 /* Ignored */
#define AT_EXECFD 2 /* File descriptor of program to load */
#define AT_PHDR 3 /* Program header of program already loaded */
#define AT_PHENT 4 /* Size of each program header entry */
#define AT_PHNUM 5 /* Number of program header entries */
#define AT_PAGESZ 6 /* Page size in bytes */
#define AT_BASE 7 /* Interpreter's base address */
#define AT_FLAGS 8 /* Flags (unused for i386) */
#define AT_ENTRY 9 /* Where interpreter should transfer control */
/*
* The following non-standard values are used for passing information
* to the (FreeBSD ELF) dynamic linker. Will probably go away soon....
*/
#define AT_BRK 10 /* Starting point for sbrk and brk */
#define AT_DEBUG 11 /* Debugging level */
#define AT_COUNT 15
/*
* The following non-standard values are used in Linux ELF binaries.
*/
#define AT_NOTELF 10 /* Program is not ELF ?? */
#define AT_UID 11 /* Real uid */
#define AT_EUID 12 /* Effective uid */
#define AT_GID 13 /* Real gid */
#define AT_EGID 14 /* Effective gid */
/*
* Structure used to pass infomation from the loader to the
* stack fixup routine.
*/
typedef struct {
Elf32_Sword execfd;
Elf32_Word phdr;
Elf32_Word phent;
Elf32_Word phnum;
Elf32_Word pagesz;
Elf32_Word base;
Elf32_Word flags;
Elf32_Word entry;
Elf32_Word trace;
} Elf32_Auxargs;
typedef struct {
char *brand;
char *emul_path;
char *interp_path;
struct sysentvec *sysvec;
} Elf32_Brandinfo;
#define MAX_BRANDS 8
int elf_insert_brand_entry __P((Elf32_Brandinfo *entry));
int elf_remove_brand_entry __P((Elf32_Brandinfo *entry));
#endif /* _IMGACT_ELF_H_ */
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