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/* 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>
#include <strings.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]);
}
}
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