1130b656e5
This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
217 lines
6.6 KiB
C
217 lines
6.6 KiB
C
/*-
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* Copyright (c) 1995-1996 Søren Schmidt
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software withough specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _IMGACT_ELF_H_
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#define _IMGACT_ELF_H_
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typedef u_int32_t Elf32_Addr;
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typedef u_int32_t Elf32_Off;
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typedef int32_t Elf32_Sword;
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typedef u_int32_t Elf32_Word;
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typedef u_int16_t Elf32_Half;
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extern int elf_trace;
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#define EI_NINDENT 16
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typedef struct {
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unsigned char e_ident[EI_NINDENT]; /* file id */
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Elf32_Half e_type; /* type */
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Elf32_Half e_machine; /* machine type */
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Elf32_Word e_version; /* version number */
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Elf32_Addr e_entry; /* entry point */
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Elf32_Off e_phoff; /* program hdr offset */
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Elf32_Off e_shoff; /* section hdr offset */
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Elf32_Word e_flags; /* flags */
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Elf32_Half e_ehsize; /* sizeof ehdr */
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Elf32_Half e_phentsize; /* program header entry size */
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Elf32_Half e_phnum; /* number of program headers */
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Elf32_Half e_shentsize; /* section header entry size */
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Elf32_Half e_shnum; /* number of section headers */
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Elf32_Half e_shstrndx; /* string table index */
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} Elf32_Ehdr;
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/*
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* Values for e_indent entry in struct Elf32_Ehdr.
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*/
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#define EI_MAG0 0
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#define EI_MAG1 1
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#define EI_MAG2 2
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#define EI_MAG3 3
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#define EI_CLASS 4
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#define EI_DATA 5
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#define EI_VERSION 6
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#define EI_SPARE 8
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#define EI_BRAND 8
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#define ELFMAG0 '\177'
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#define ELFMAG1 'E'
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#define ELFMAG2 'L'
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#define ELFMAG3 'F'
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#define ELFCLASSNONE 0 /* invalid class */
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#define ELFCLASS32 1 /* 32bit object class */
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#define ELFCLASS64 2 /* 64bit object class */
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#define ELFDATANONE 0 /* invalid data encoding */
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#define ELFDATA2LSB 1 /* little endian */
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#define ELFDATA2MSB 2 /* big endian */
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/*
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* Values for e_version entry in struct Elf32_Ehdr.
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*/
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#define EV_NONE 0 /* invalid version */
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#define EV_CURRENT 1 /* current version */
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/*
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* Values for e_type entry in struct Elf32_Ehdr.
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*/
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#define ET_NONE 0
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#define ET_REL 1
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#define ET_EXEC 2
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#define ET_DYN 3
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#define ET_CORE 4
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#define ET_LOPROC 5
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#define ET_HIPROC 6
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/*
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* Values for e_machine entry in struct Elf32_Ehdr.
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*/
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#define EM_NONE 0
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#define EM_M32 1
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#define EM_SPARC 2
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#define EM_386 3
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#define EM_68K 4
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#define EM_88K 5
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#define EM_486 6
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#define EM_860 7
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typedef struct {
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Elf32_Word p_type; /* entry type */
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Elf32_Off p_offset; /* offset */
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Elf32_Addr p_vaddr; /* virtual address */
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Elf32_Addr p_paddr; /* physical address */
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Elf32_Word p_filesz; /* file size */
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Elf32_Word p_memsz; /* memory size */
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Elf32_Word p_flags; /* flags */
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Elf32_Word p_align; /* memory & file alignment */
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} Elf32_Phdr;
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/*
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* Values for p_type entry in struct Elf32_Phdr.
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*/
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#define PT_NULL 0
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#define PT_LOAD 1
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#define PT_DYNAMIC 2
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#define PT_INTERP 3
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#define PT_NOTE 4
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#define PT_SHLIB 5
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#define PT_PHDR 6
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#define PT_LOPROC 0x70000000
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#define PT_HIPROC 0x7fffffff
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/*
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* Values for p_flags entry in struct Elf32_Phdr.
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*/
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#define PF_X 0x1
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#define PF_W 0x2
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#define PF_R 0x4
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#define PF_MASKPROC 0xf0000000
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/*
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* Auxiliary vector entry on initial stack.
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*/
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typedef struct {
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Elf32_Sword a_type;
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Elf32_Word a_val;
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} Elf32_Auxinfo;
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#define AUXARGS_ENTRY(pos, id, val) {suword(pos++, id); suword(pos++, val);}
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/*
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* Values for a_type in struct Elf32_Auxinfo.
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*/
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#define AT_NULL 0 /* Terminates the vector */
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#define AT_IGNORE 1 /* Ignored */
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#define AT_EXECFD 2 /* File descriptor of program to load */
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#define AT_PHDR 3 /* Program header of program already loaded */
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#define AT_PHENT 4 /* Size of each program header entry */
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#define AT_PHNUM 5 /* Number of program header entries */
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#define AT_PAGESZ 6 /* Page size in bytes */
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#define AT_BASE 7 /* Interpreter's base address */
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#define AT_FLAGS 8 /* Flags (unused for i386) */
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#define AT_ENTRY 9 /* Where interpreter should transfer control */
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/*
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* The following non-standard values are used for passing information
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* to the (FreeBSD ELF) dynamic linker. Will probably go away soon....
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*/
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#define AT_BRK 10 /* Starting point for sbrk and brk */
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#define AT_DEBUG 11 /* Debugging level */
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#define AT_COUNT 15
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/*
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* The following non-standard values are used in Linux ELF binaries.
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*/
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#define AT_NOTELF 10 /* Program is not ELF ?? */
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#define AT_UID 11 /* Real uid */
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#define AT_EUID 12 /* Effective uid */
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#define AT_GID 13 /* Real gid */
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#define AT_EGID 14 /* Effective gid */
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/*
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* Structure used to pass infomation from the loader to the
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* stack fixup routine.
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*/
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typedef struct {
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Elf32_Sword execfd;
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Elf32_Word phdr;
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Elf32_Word phent;
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Elf32_Word phnum;
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Elf32_Word pagesz;
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Elf32_Word base;
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Elf32_Word flags;
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Elf32_Word entry;
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Elf32_Word trace;
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} Elf32_Auxargs;
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typedef struct {
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char *brand;
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char *emul_path;
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char *interp_path;
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struct sysentvec *sysvec;
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} Elf32_Brandinfo;
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#define MAX_BRANDS 8
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int elf_insert_brand_entry __P((Elf32_Brandinfo *entry));
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int elf_remove_brand_entry __P((Elf32_Brandinfo *entry));
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#endif /* _IMGACT_ELF_H_ */
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