unaligned-funcs.c revision 169690
1/* EABI unaligned read/write functions. 2 3 Copyright (C) 2005 Free Software Foundation, Inc. 4 Contributed by CodeSourcery, LLC. 5 6 This file is free software; you can redistribute it and/or modify it 7 under the terms of the GNU General Public License as published by the 8 Free Software Foundation; either version 2, or (at your option) any 9 later version. 10 11 In addition to the permissions in the GNU General Public License, the 12 Free Software Foundation gives you unlimited permission to link the 13 compiled version of this file into combinations with other programs, 14 and to distribute those combinations without any restriction coming 15 from the use of this file. (The General Public License restrictions 16 do apply in other respects; for example, they cover modification of 17 the file, and distribution when not linked into a combine 18 executable.) 19 20 This file is distributed in the hope that it will be useful, but 21 WITHOUT ANY WARRANTY; without even the implied warranty of 22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 23 General Public License for more details. 24 25 You should have received a copy of the GNU General Public License 26 along with this program; see the file COPYING. If not, write to 27 the Free Software Foundation, 51 Franklin Street, Fifth Floor, 28 Boston, MA 02110-1301, USA. */ 29 30int __aeabi_uread4 (void *); 31int __aeabi_uwrite4 (int, void *); 32long long __aeabi_uread8 (void *); 33long long __aeabi_uwrite8 (long long, void *); 34 35struct __attribute__((packed)) u4 { int data; }; 36struct __attribute__((packed)) u8 { long long data; }; 37 38int 39__aeabi_uread4 (void *ptr) 40{ 41 return ((struct u4 *) ptr)->data; 42} 43 44int 45__aeabi_uwrite4 (int data, void *ptr) 46{ 47 ((struct u4 *) ptr)->data = data; 48 return data; 49} 50 51long long 52__aeabi_uread8 (void *ptr) 53{ 54 return ((struct u8 *) ptr)->data; 55} 56 57long long 58__aeabi_uwrite8 (long long data, void *ptr) 59{ 60 ((struct u8 *) ptr)->data = data; 61 return data; 62} 63