1eb81f38aSJohn Baldwin /*-
2eb81f38aSJohn Baldwin * Copyright (c) 2018 John Baldwin
3eb81f38aSJohn Baldwin *
4eb81f38aSJohn Baldwin * Redistribution and use in source and binary forms, with or without
5eb81f38aSJohn Baldwin * modification, are permitted provided that the following conditions
6eb81f38aSJohn Baldwin * are met:
7eb81f38aSJohn Baldwin * 1. Redistributions of source code must retain the above copyright
8eb81f38aSJohn Baldwin * notice, this list of conditions and the following disclaimer.
9eb81f38aSJohn Baldwin * 2. Redistributions in binary form must reproduce the above copyright
10eb81f38aSJohn Baldwin * notice, this list of conditions and the following disclaimer in the
11eb81f38aSJohn Baldwin * documentation and/or other materials provided with the distribution.
12eb81f38aSJohn Baldwin *
13eb81f38aSJohn Baldwin * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14eb81f38aSJohn Baldwin * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15eb81f38aSJohn Baldwin * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16eb81f38aSJohn Baldwin * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17eb81f38aSJohn Baldwin * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18eb81f38aSJohn Baldwin * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19eb81f38aSJohn Baldwin * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20eb81f38aSJohn Baldwin * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21eb81f38aSJohn Baldwin * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22eb81f38aSJohn Baldwin * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23eb81f38aSJohn Baldwin * SUCH DAMAGE.
24eb81f38aSJohn Baldwin */
25eb81f38aSJohn Baldwin
26eb81f38aSJohn Baldwin #include <gelf.h>
27eb81f38aSJohn Baldwin
28eb81f38aSJohn Baldwin #include "_libelf.h"
29eb81f38aSJohn Baldwin
30eb81f38aSJohn Baldwin ELFTC_VCSID("$Id$");
31eb81f38aSJohn Baldwin
32eb81f38aSJohn Baldwin int
_libelf_is_mips64el(Elf * e)33eb81f38aSJohn Baldwin _libelf_is_mips64el(Elf *e)
34eb81f38aSJohn Baldwin {
35eb81f38aSJohn Baldwin
36447a8c25SEd Maste return (e->e_kind == ELF_K_ELF && e->e_class == ELFCLASS64 &&
371c45d770SEd Maste e->e_u.e_elf.e_ehdr.e_ehdr64->e_machine == EM_MIPS &&
381c45d770SEd Maste e->e_u.e_elf.e_ehdr.e_ehdr64->e_ident[EI_DATA] == ELFDATA2LSB);
39eb81f38aSJohn Baldwin }
40eb81f38aSJohn Baldwin
41eb81f38aSJohn Baldwin /*
42eb81f38aSJohn Baldwin * For MIPS64, the r_info field is actually stored as a 32-bit symbol
43eb81f38aSJohn Baldwin * index (r_sym) followed by four single-byte fields (r_ssym, r_type3,
44eb81f38aSJohn Baldwin * r_type2, and r_type). The byte-swap for the little-endian case
45eb81f38aSJohn Baldwin * jumbles this incorrectly so compensate.
46eb81f38aSJohn Baldwin */
47eb81f38aSJohn Baldwin Elf64_Xword
_libelf_mips64el_r_info_tof(Elf64_Xword r_info)48eb81f38aSJohn Baldwin _libelf_mips64el_r_info_tof(Elf64_Xword r_info)
49eb81f38aSJohn Baldwin {
50eb81f38aSJohn Baldwin Elf64_Xword new_info;
51eb81f38aSJohn Baldwin uint8_t ssym, type3, type2, type;
52eb81f38aSJohn Baldwin
53eb81f38aSJohn Baldwin ssym = r_info >> 24;
54eb81f38aSJohn Baldwin type3 = r_info >> 16;
55eb81f38aSJohn Baldwin type2 = r_info >> 8;
56eb81f38aSJohn Baldwin type = r_info;
57eb81f38aSJohn Baldwin new_info = r_info >> 32;
58eb81f38aSJohn Baldwin new_info |= (Elf64_Xword)ssym << 32;
59eb81f38aSJohn Baldwin new_info |= (Elf64_Xword)type3 << 40;
60eb81f38aSJohn Baldwin new_info |= (Elf64_Xword)type2 << 48;
61eb81f38aSJohn Baldwin new_info |= (Elf64_Xword)type << 56;
62eb81f38aSJohn Baldwin return (new_info);
63eb81f38aSJohn Baldwin }
64eb81f38aSJohn Baldwin
65eb81f38aSJohn Baldwin Elf64_Xword
_libelf_mips64el_r_info_tom(Elf64_Xword r_info)66eb81f38aSJohn Baldwin _libelf_mips64el_r_info_tom(Elf64_Xword r_info)
67eb81f38aSJohn Baldwin {
68eb81f38aSJohn Baldwin Elf64_Xword new_info;
69eb81f38aSJohn Baldwin uint8_t ssym, type3, type2, type;
70eb81f38aSJohn Baldwin
71eb81f38aSJohn Baldwin ssym = r_info >> 32;
72eb81f38aSJohn Baldwin type3 = r_info >> 40;
73eb81f38aSJohn Baldwin type2 = r_info >> 48;
74eb81f38aSJohn Baldwin type = r_info >> 56;
75eb81f38aSJohn Baldwin new_info = (r_info & 0xffffffff) << 32;
76eb81f38aSJohn Baldwin new_info |= (Elf64_Xword)ssym << 24;
77eb81f38aSJohn Baldwin new_info |= (Elf64_Xword)type3 << 16;
78eb81f38aSJohn Baldwin new_info |= (Elf64_Xword)type2 << 8;
79eb81f38aSJohn Baldwin new_info |= (Elf64_Xword)type;
80eb81f38aSJohn Baldwin return (new_info);
81eb81f38aSJohn Baldwin }
82