diff options
Diffstat (limited to 'usr.sbin/btxld/elfh.c')
| -rw-r--r-- | usr.sbin/btxld/elfh.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/usr.sbin/btxld/elfh.c b/usr.sbin/btxld/elfh.c new file mode 100644 index 000000000000..5122aca8b3c9 --- /dev/null +++ b/usr.sbin/btxld/elfh.c @@ -0,0 +1,125 @@ +/*- + * 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 */ +}; |