Retro68/gcc/libgcc/config/arm/unaligned-funcs.c
2014-09-21 19:33:12 +02:00

58 lines
1.6 KiB
C

/* EABI unaligned read/write functions.
Copyright (C) 2005-2014 Free Software Foundation, Inc.
Contributed by CodeSourcery, LLC.
This file is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3, or (at your option) any
later version.
This file 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
General Public License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
int __aeabi_uread4 (void *);
int __aeabi_uwrite4 (int, void *);
long long __aeabi_uread8 (void *);
long long __aeabi_uwrite8 (long long, void *);
struct __attribute__((packed)) u4 { int data; };
struct __attribute__((packed)) u8 { long long data; };
int
__aeabi_uread4 (void *ptr)
{
return ((struct u4 *) ptr)->data;
}
int
__aeabi_uwrite4 (int data, void *ptr)
{
((struct u4 *) ptr)->data = data;
return data;
}
long long
__aeabi_uread8 (void *ptr)
{
return ((struct u8 *) ptr)->data;
}
long long
__aeabi_uwrite8 (long long data, void *ptr)
{
((struct u8 *) ptr)->data = data;
return data;
}