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/* Copyright 2013-2014 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* Wrappers for malloc, et. al. */
#include <mem_region.h>
#include <lock.h>
#include <string.h>
#include <mem_region-malloc.h>
#define DEFAULT_ALIGN __alignof__(long)
void *__memalign(size_t blocksize, size_t bytes, const char *location)
{
void *p;
lock(&skiboot_heap.free_list_lock);
p = mem_alloc(&skiboot_heap, bytes, blocksize, location);
unlock(&skiboot_heap.free_list_lock);
return p;
}
void *__malloc(size_t bytes, const char *location)
{
return __memalign(DEFAULT_ALIGN, bytes, location);
}
void __free(void *p, const char *location)
{
lock(&skiboot_heap.free_list_lock);
mem_free(&skiboot_heap, p, location);
unlock(&skiboot_heap.free_list_lock);
}
void *__realloc(void *ptr, size_t size, const char *location)
{
void *newptr;
/* Two classic malloc corner cases. */
if (!size) {
__free(ptr, location);
return NULL;
}
if (!ptr)
return __malloc(size, location);
lock(&skiboot_heap.free_list_lock);
if (mem_resize(&skiboot_heap, ptr, size, location)) {
newptr = ptr;
} else {
newptr = mem_alloc(&skiboot_heap, size, DEFAULT_ALIGN,
location);
if (newptr) {
size_t copy = mem_allocated_size(ptr);
if (copy > size)
copy = size;
memcpy(newptr, ptr, copy);
mem_free(&skiboot_heap, ptr, location);
}
}
unlock(&skiboot_heap.free_list_lock);
return newptr;
}
void *__zalloc(size_t bytes, const char *location)
{
void *p = __malloc(bytes, location);
if (p)
memset(p, 0, bytes);
return p;
}
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