mirror of
https://github.com/freebsd/freebsd-src
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2e43efd0bb
Reviewed by: rgrimes MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D19485
82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
/*-
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* Copyright (c) 2018 John Baldwin
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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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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <gelf.h>
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#include "_libelf.h"
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ELFTC_VCSID("$Id$");
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int
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_libelf_is_mips64el(Elf *e)
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{
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return (e->e_kind == ELF_K_ELF && e->e_class == ELFCLASS64 &&
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e->e_u.e_elf.e_ehdr.e_ehdr64->e_machine == EM_MIPS &&
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e->e_u.e_elf.e_ehdr.e_ehdr64->e_ident[EI_DATA] == ELFDATA2LSB);
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}
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/*
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* For MIPS64, the r_info field is actually stored as a 32-bit symbol
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* index (r_sym) followed by four single-byte fields (r_ssym, r_type3,
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* r_type2, and r_type). The byte-swap for the little-endian case
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* jumbles this incorrectly so compensate.
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*/
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Elf64_Xword
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_libelf_mips64el_r_info_tof(Elf64_Xword r_info)
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{
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Elf64_Xword new_info;
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uint8_t ssym, type3, type2, type;
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ssym = r_info >> 24;
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type3 = r_info >> 16;
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type2 = r_info >> 8;
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type = r_info;
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new_info = r_info >> 32;
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new_info |= (Elf64_Xword)ssym << 32;
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new_info |= (Elf64_Xword)type3 << 40;
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new_info |= (Elf64_Xword)type2 << 48;
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new_info |= (Elf64_Xword)type << 56;
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return (new_info);
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}
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Elf64_Xword
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_libelf_mips64el_r_info_tom(Elf64_Xword r_info)
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{
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Elf64_Xword new_info;
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uint8_t ssym, type3, type2, type;
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ssym = r_info >> 32;
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type3 = r_info >> 40;
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type2 = r_info >> 48;
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type = r_info >> 56;
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new_info = (r_info & 0xffffffff) << 32;
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new_info |= (Elf64_Xword)ssym << 24;
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new_info |= (Elf64_Xword)type3 << 16;
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new_info |= (Elf64_Xword)type2 << 8;
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new_info |= (Elf64_Xword)type;
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return (new_info);
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}
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