1 /*
2 swap64.c - 64-bit byte swapping functions.
3 Copyright (C) 1995 - 2001 Michael Riepe
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public
7 License as published by the Free Software Foundation; either
8 version 2 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
14
15 You should have received a copy of the GNU Library General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
18 */
19
20 #include <private.h>
21 #include <byteswap.h>
22
23 #if __LIBELF64
24
25 #ifndef lint
26 static const char rcsid[] = "@(#) $Id: swap64.c,v 1.6 2008/05/23 08:15:35 michael Exp $";
27 #endif /* lint */
28
29 __libelf_u64_t
_elf_load_u64L(const unsigned char * from)30 _elf_load_u64L(const unsigned char *from) {
31 return ((__libelf_u64_t)__load_u32L(from + 4) << 32)
32 | (__libelf_u64_t)__load_u32L(from);
33 }
34
35 __libelf_u64_t
_elf_load_u64M(const unsigned char * from)36 _elf_load_u64M(const unsigned char *from) {
37 return ((__libelf_u64_t)__load_u32M(from) << 32)
38 | (__libelf_u64_t)__load_u32M(from + 4);
39 }
40
41 __libelf_i64_t
_elf_load_i64L(const unsigned char * from)42 _elf_load_i64L(const unsigned char *from) {
43 return ((__libelf_i64_t)__load_i32L(from + 4) << 32)
44 | (__libelf_u64_t)__load_u32L(from);
45 }
46
47 __libelf_i64_t
_elf_load_i64M(const unsigned char * from)48 _elf_load_i64M(const unsigned char *from) {
49 return ((__libelf_i64_t)__load_i32M(from) << 32)
50 | (__libelf_u64_t)__load_u32M(from + 4);
51 }
52
53 void
_elf_store_u64L(unsigned char * to,__libelf_u64_t v)54 _elf_store_u64L(unsigned char *to, __libelf_u64_t v) {
55 __store_u32L(to, (__libelf_u32_t)v);
56 v >>= 32;
57 __store_u32L(to + 4, (__libelf_u32_t)v);
58 }
59
60 void
_elf_store_u64M(unsigned char * to,__libelf_u64_t v)61 _elf_store_u64M(unsigned char *to, __libelf_u64_t v) {
62 __store_u32M(to + 4, (__libelf_u32_t)v);
63 v >>= 32;
64 __store_u32M(to, (__libelf_u32_t)v);
65 }
66
67 void
_elf_store_i64L(unsigned char * to,__libelf_u64_t v)68 _elf_store_i64L(unsigned char *to, __libelf_u64_t v) {
69 __store_u32L(to, (__libelf_u32_t)v);
70 v >>= 32;
71 __store_i32L(to + 4, (__libelf_u32_t)v);
72 }
73
74 void
_elf_store_i64M(unsigned char * to,__libelf_u64_t v)75 _elf_store_i64M(unsigned char *to, __libelf_u64_t v) {
76 __store_u32M(to + 4, (__libelf_u32_t)v);
77 v >>= 32;
78 __store_i32M(to, (__libelf_u32_t)v);
79 }
80
81 #endif /* __LIBELF64 */
82