/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 1998 Robert Nordier
 * 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.
 * 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 AUTHOR 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 AUTHOR 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.
 */

#include <sys/param.h>
#include <sys/endian.h>

#include <stddef.h>
#include "elfh.h"

#define SET_ME  0xeeeeeeee    /* filled in by btxld */

/*
 * ELF header template.
 */
const struct elfh elfhdr = {
    {
        {
            ELFMAG0, ELFMAG1, ELFMAG2, ELFMAG3,     /* e_ident */
            ELFCLASS32, ELFDATA2LSB, EV_CURRENT, 0,
            'F', 'r', 'e', 'e', 'B', 'S', 'D', 0
        },
        htole16(ET_EXEC),                           /* e_type */
        htole16(EM_386),                            /* e_machine */
        htole32(EV_CURRENT),                        /* e_version */
        htole32(SET_ME),                            /* e_entry */
        htole32(offsetof(struct elfh, p)),          /* e_phoff */
        htole32(offsetof(struct elfh, sh)),         /* e_shoff */
        0,                                          /* e_flags */
        htole16(sizeof(elfhdr.e)),                  /* e_ehsize */
        htole16(sizeof(elfhdr.p[0])),               /* e_phentsize */
        htole16(nitems(elfhdr.p)),                  /* e_phnum */
        htole16(sizeof(elfhdr.sh[0])),              /* e_shentsize */
        htole16(nitems(elfhdr.sh)),                 /* e_shnum */
        htole16(1)                                  /* e_shstrndx */
    },
    {
        {
            htole32(PT_LOAD),                       /* p_type */
            htole32(sizeof(elfhdr)),                /* p_offset */
            htole32(SET_ME),                        /* p_vaddr */
            htole32(SET_ME),                        /* p_paddr */
            htole32(SET_ME),                        /* p_filesz */
            htole32(SET_ME),                        /* p_memsz */
            htole32(PF_R | PF_X),                   /* p_flags */
            htole32(0x1000)                         /* p_align */
        },
        {
            htole32(PT_LOAD),                       /* p_type */
            htole32(SET_ME),                        /* p_offset */
            htole32(SET_ME),                        /* p_vaddr */
            htole32(SET_ME),                        /* p_paddr */
            htole32(SET_ME),                        /* p_filesz */
            htole32(SET_ME),                        /* p_memsz */
            htole32(PF_R | PF_W),                   /* p_flags */
            htole32(0x1000)                         /* p_align */
        }
    },
    {
        {
            0, htole32(SHT_NULL), 0, 0, 0, 0, htole32(SHN_UNDEF), 0, 0, 0
        },
        {
            htole32(1),                             /* sh_name */
            htole32(SHT_STRTAB),                    /* sh_type */
            0,                                      /* sh_flags */
            0,                                      /* sh_addr */
            htole32(offsetof(struct elfh, shstrtab)), /* sh_offset */
            htole32(sizeof(elfhdr.shstrtab)),       /* sh_size */
            htole32(SHN_UNDEF),                     /* sh_link */
            0,                                      /* sh_info */
            htole32(1),                             /* sh_addralign */
            0                                       /* sh_entsize */
        },
        {
            htole32(0xb),                           /* sh_name */
            htole32(SHT_PROGBITS),                  /* sh_type */
            htole32(SHF_EXECINSTR | SHF_ALLOC),     /* sh_flags */
            htole32(SET_ME),                        /* sh_addr */
            htole32(SET_ME),                        /* sh_offset */
            htole32(SET_ME),                        /* sh_size */
            htole32(SHN_UNDEF),                     /* sh_link */
            0,                                      /* sh_info */
            htole32(4),                             /* sh_addralign */
            0                                       /* sh_entsize */
        },
        {
            htole32(0x11),                          /* sh_name */
            htole32(SHT_PROGBITS),                  /* sh_type */
            htole32(SHF_ALLOC | SHF_WRITE),         /* sh_flags */
            htole32(SET_ME),                        /* sh_addr */
            htole32(SET_ME),                        /* sh_offset */
            htole32(SET_ME),                        /* sh_size */
            htole32(SHN_UNDEF),                     /* sh_link */
            0,                                      /* sh_info */
            htole32(4),                             /* sh_addralign */
            0                                       /* sh_entsize */
        }
    },
    "\0.shstrtab\0.text\0.data"                     /* shstrtab */
};