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/* Dump memory allocation routines
Copyright (C) 1996 Maurizio Plaza
1996 Jakub Jelinek
This program 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 2 of the License, or
(at your option) any later version.
This program 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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
USA. */
#include <stringops.h>
#ifndef MALLOC_BASE
extern unsigned long _start;
static char *malloc_ptr = ((char *)&_start) + 0x30000;
#else
static char *malloc_ptr = (char *) MALLOC_BASE;
#endif
static char *last_alloc = 0;
static char *align_ptr_to(char *ptr, unsigned long align)
{
return (char *) ((((unsigned long) ptr) + (align - 1UL)) &
~(align - 1UL));
}
void *malloc (int size)
{
char *caddr;
caddr = malloc_ptr;
malloc_ptr += size;
last_alloc = caddr;
malloc_ptr = align_ptr_to(malloc_ptr, 8UL);
return caddr;
}
void *calloc (int nmemb, int memb_size)
{
char *ret;
int size;
if (!nmemb || !memb_size)
return (void *) 0;
size = nmemb * memb_size;
ret = malloc(size);
if (ret)
memset(ret, 0, size);
return ret;
}
int posix_memalign(void **memptr, unsigned long alignment, unsigned long size)
{
char *caddr;
if (alignment & (alignment - 1UL))
return -1;
if (alignment & (sizeof(void *) - 1UL))
return -1;
if (size == 0) {
*memptr = (void *) 0;
return 0;
}
caddr = align_ptr_to(malloc_ptr, alignment);
malloc_ptr = (caddr + size);
last_alloc = caddr;
malloc_ptr = align_ptr_to(malloc_ptr, 8UL);
*memptr = caddr;
return 0;
}
void free (void *m)
{
if (m == last_alloc)
malloc_ptr = last_alloc;
}
void mark (void **ptr)
{
*ptr = (void *) malloc_ptr;
}
void release (void *ptr)
{
malloc_ptr = (char *) ptr;
}
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