blob: 2cc6135e778185cf1642bf6a03ef98c66c41e06c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
/* Wrapper functions for malloc/free that force 16-byte alignment
* See http://perso.club-internet.fr/matmac/sourcesc.htm
* Copyright 2001 Phil Karn, KA9Q
* May be used under the terms of the GNU Public License (GPL)
*/
#include "malloc16.h"
#include <string.h>
void *malloc16Align(int size){
void *p;
void **p1;
if((p = malloc(size+31)) == NULL)
return NULL;
/* Round up to next 16-byte boundary */
p1 = (void **)(((long)p + 31) & (~15));
/* Stash actual start of block just before ptr we return */
p1[-1] = p;
/* Return 16-byte aligned address */
return (void *)p1;
}
void *calloc16Align(size_t nmemb,size_t size){
int nbytes;
void *p;
nbytes = nmemb*size;
if((p = malloc16Align(nbytes)) == NULL)
return NULL;
memset(p,0,nbytes);
return p;
}
void free16Align(void *p){
if(p != NULL){
/* Retrieve pointer to actual start of block and free it */
free(((void **)p)[-1]);
}
}
|
