RTEMS
alignedalloc.c
1 /*
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (C) 2018 embedded brains GmbH
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  * notice, this list of conditions and the following disclaimer in the
13  * documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
19  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25  * POSSIBILITY OF SUCH DAMAGE.
26  */
27 
28 #ifdef HAVE_CONFIG_H
29 #include "config.h"
30 #endif
31 
32 #include <stdlib.h>
33 
34 #include <rtems/malloc.h>
35 
36 void *aligned_alloc( size_t alignment, size_t size )
37 {
38  return rtems_heap_allocate_aligned_with_boundary( size, alignment, 0 );
39 }
40 
41 void *memalign( size_t, size_t ) RTEMS_ALIAS( aligned_alloc ) __malloc_like
42  __alloc_align(1) __alloc_size(2) __result_use_check
43  __attribute__((__nothrow__));
void * rtems_heap_allocate_aligned_with_boundary(size_t size, uintptr_t alignment, uintptr_t boundary) RTEMS_MALLOCLIKE RTEMS_ALLOC_SIZE(1) RTEMS_ALLOC_ALIGN(2) RTEMS_WARN_UNUSED_RESULT
Allocates a memory area of size size bytes from the heap.
#define RTEMS_ALIAS(_target)
Instructs the compiler to generate an alias to the specified target function.
Definition: basedefs.h:335