From ea8b1f90d46279d7814a0c7f6b6742d3fab034f7 Mon Sep 17 00:00:00 2001 From: Igor Pashev Date: Tue, 4 Sep 2012 18:09:07 +0400 Subject: Imported Upstream version 0.8.13 --- lib/swap64.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 lib/swap64.c (limited to 'lib/swap64.c') diff --git a/lib/swap64.c b/lib/swap64.c new file mode 100644 index 0000000..397bd5b --- /dev/null +++ b/lib/swap64.c @@ -0,0 +1,81 @@ +/* +swap64.c - 64-bit byte swapping functions. +Copyright (C) 1995 - 2001 Michael Riepe + +This library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public +License as published by the Free Software Foundation; either +version 2 of the License, or (at your option) any later version. + +This library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with this library; if not, write to the Free Software +Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA +*/ + +#include +#include + +#if __LIBELF64 + +#ifndef lint +static const char rcsid[] = "@(#) $Id: swap64.c,v 1.6 2008/05/23 08:15:35 michael Exp $"; +#endif /* lint */ + +__libelf_u64_t +_elf_load_u64L(const unsigned char *from) { + return ((__libelf_u64_t)__load_u32L(from + 4) << 32) + | (__libelf_u64_t)__load_u32L(from); +} + +__libelf_u64_t +_elf_load_u64M(const unsigned char *from) { + return ((__libelf_u64_t)__load_u32M(from) << 32) + | (__libelf_u64_t)__load_u32M(from + 4); +} + +__libelf_i64_t +_elf_load_i64L(const unsigned char *from) { + return ((__libelf_i64_t)__load_i32L(from + 4) << 32) + | (__libelf_u64_t)__load_u32L(from); +} + +__libelf_i64_t +_elf_load_i64M(const unsigned char *from) { + return ((__libelf_i64_t)__load_i32M(from) << 32) + | (__libelf_u64_t)__load_u32M(from + 4); +} + +void +_elf_store_u64L(unsigned char *to, __libelf_u64_t v) { + __store_u32L(to, (__libelf_u32_t)v); + v >>= 32; + __store_u32L(to + 4, (__libelf_u32_t)v); +} + +void +_elf_store_u64M(unsigned char *to, __libelf_u64_t v) { + __store_u32M(to + 4, (__libelf_u32_t)v); + v >>= 32; + __store_u32M(to, (__libelf_u32_t)v); +} + +void +_elf_store_i64L(unsigned char *to, __libelf_u64_t v) { + __store_u32L(to, (__libelf_u32_t)v); + v >>= 32; + __store_i32L(to + 4, (__libelf_u32_t)v); +} + +void +_elf_store_i64M(unsigned char *to, __libelf_u64_t v) { + __store_u32M(to + 4, (__libelf_u32_t)v); + v >>= 32; + __store_i32M(to, (__libelf_u32_t)v); +} + +#endif /* __LIBELF64 */ -- cgit v1.2.3