1*a1b5ec25Sjsg /*-
2*a1b5ec25Sjsg * Copyright (c) 2018 Joseph Koshy
3*a1b5ec25Sjsg * All rights reserved.
4*a1b5ec25Sjsg *
5*a1b5ec25Sjsg * Redistribution and use in source and binary forms, with or without
6*a1b5ec25Sjsg * modification, are permitted provided that the following conditions
7*a1b5ec25Sjsg * are met:
8*a1b5ec25Sjsg * 1. Redistributions of source code must retain the above copyright
9*a1b5ec25Sjsg * notice, this list of conditions and the following disclaimer.
10*a1b5ec25Sjsg * 2. Redistributions in binary form must reproduce the above copyright
11*a1b5ec25Sjsg * notice, this list of conditions and the following disclaimer in the
12*a1b5ec25Sjsg * documentation and/or other materials provided with the distribution.
13*a1b5ec25Sjsg *
14*a1b5ec25Sjsg * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15*a1b5ec25Sjsg * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16*a1b5ec25Sjsg * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17*a1b5ec25Sjsg * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18*a1b5ec25Sjsg * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19*a1b5ec25Sjsg * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20*a1b5ec25Sjsg * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21*a1b5ec25Sjsg * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22*a1b5ec25Sjsg * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23*a1b5ec25Sjsg * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24*a1b5ec25Sjsg * SUCH DAMAGE.
25*a1b5ec25Sjsg */
26*a1b5ec25Sjsg
27*a1b5ec25Sjsg #include <assert.h>
28*a1b5ec25Sjsg #include <libelf.h>
29*a1b5ec25Sjsg
30*a1b5ec25Sjsg #include "_libelf.h"
31*a1b5ec25Sjsg
32*a1b5ec25Sjsg ELFTC_VCSID("$Id: libelf_elfmachine.c,v 1.1 2019/02/01 05:27:38 jsg Exp $");
33*a1b5ec25Sjsg
34*a1b5ec25Sjsg /*
35*a1b5ec25Sjsg * A convenience helper that returns the ELF machine architecture for
36*a1b5ec25Sjsg * a ELF descriptor.
37*a1b5ec25Sjsg */
38*a1b5ec25Sjsg int
_libelf_elfmachine(Elf * e)39*a1b5ec25Sjsg _libelf_elfmachine(Elf *e)
40*a1b5ec25Sjsg {
41*a1b5ec25Sjsg Elf32_Ehdr *eh32;
42*a1b5ec25Sjsg Elf64_Ehdr *eh64;
43*a1b5ec25Sjsg
44*a1b5ec25Sjsg if (!e)
45*a1b5ec25Sjsg return EM_NONE;
46*a1b5ec25Sjsg
47*a1b5ec25Sjsg assert(e->e_kind == ELF_K_ELF);
48*a1b5ec25Sjsg assert(e->e_class != ELFCLASSNONE);
49*a1b5ec25Sjsg
50*a1b5ec25Sjsg eh32 = NULL;
51*a1b5ec25Sjsg eh64 = NULL;
52*a1b5ec25Sjsg
53*a1b5ec25Sjsg switch (e->e_class) {
54*a1b5ec25Sjsg case ELFCLASS32:
55*a1b5ec25Sjsg eh32 = e->e_u.e_elf.e_ehdr.e_ehdr32;
56*a1b5ec25Sjsg return eh32 ? eh32->e_machine : EM_NONE;
57*a1b5ec25Sjsg case ELFCLASS64:
58*a1b5ec25Sjsg eh64 = e->e_u.e_elf.e_ehdr.e_ehdr64;
59*a1b5ec25Sjsg return eh64 ? eh64->e_machine : EM_NONE;
60*a1b5ec25Sjsg }
61*a1b5ec25Sjsg
62*a1b5ec25Sjsg return (EM_NONE);
63*a1b5ec25Sjsg }
64