1/*-
2 * Copyright 1996-1998 John D. Polstra.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 * $FreeBSD$
26 */
27
28#include <stddef.h>
29#include <stdlib.h>
30#include <string.h>
31#include <unistd.h>
32#include "rtld.h"
33#include "rtld_printf.h"
34
35void *
36xcalloc(size_t number, size_t size)
37{
38	void *p;
39
40	p = calloc(number, size);
41	if (p == NULL) {
42		rtld_fdputstr(STDERR_FILENO, "Out of memory\n");
43		_exit(1);
44	}
45	return (p);
46}
47
48void *
49xmalloc(size_t size)
50{
51    void *p = malloc(size);
52    if (p == NULL) {
53	rtld_fdputstr(STDERR_FILENO, "Out of memory\n");
54	_exit(1);
55    }
56    return p;
57}
58
59char *
60xstrdup(const char *str)
61{
62	char *copy;
63	size_t len;
64
65	len = strlen(str) + 1;
66	copy = xmalloc(len);
67	memcpy(copy, str, len);
68	return (copy);
69}
70
71void *
72malloc_aligned(size_t size, size_t align)
73{
74	void *mem, *res;
75
76	if (align < sizeof(void *))
77		align = sizeof(void *);
78
79	mem = xmalloc(size + sizeof(void *) + align - 1);
80	res = (void *)round((uintptr_t)mem + sizeof(void *), align);
81	*(void **)((uintptr_t)res - sizeof(void *)) = mem;
82	return (res);
83}
84
85void
86free_aligned(void *ptr)
87{
88	void *mem;
89	uintptr_t x;
90
91	if (ptr == NULL)
92		return;
93	x = (uintptr_t)ptr;
94	x -= sizeof(void *);
95	mem = *(void **)x;
96	free(mem);
97}
98