mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
65 lines
1.2 KiB
65 lines
1.2 KiB
// SPDX-License-Identifier: GPL-2.0+ |
|
/* |
|
* Simple malloc implementation |
|
* |
|
* Copyright (c) 2014 Google, Inc |
|
*/ |
|
|
|
#include <common.h> |
|
#include <malloc.h> |
|
#include <mapmem.h> |
|
#include <asm/io.h> |
|
|
|
DECLARE_GLOBAL_DATA_PTR; |
|
|
|
void *malloc_simple(size_t bytes) |
|
{ |
|
ulong new_ptr; |
|
void *ptr; |
|
|
|
new_ptr = gd->malloc_ptr + bytes; |
|
debug("%s: size=%zx, ptr=%lx, limit=%lx: ", __func__, bytes, new_ptr, |
|
gd->malloc_limit); |
|
if (new_ptr > gd->malloc_limit) { |
|
debug("space exhausted\n"); |
|
return NULL; |
|
} |
|
ptr = map_sysmem(gd->malloc_base + gd->malloc_ptr, bytes); |
|
gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr)); |
|
debug("%lx\n", (ulong)ptr); |
|
|
|
return ptr; |
|
} |
|
|
|
void *memalign_simple(size_t align, size_t bytes) |
|
{ |
|
ulong addr, new_ptr; |
|
void *ptr; |
|
|
|
addr = ALIGN(gd->malloc_base + gd->malloc_ptr, align); |
|
new_ptr = addr + bytes - gd->malloc_base; |
|
if (new_ptr > gd->malloc_limit) { |
|
debug("space exhausted\n"); |
|
return NULL; |
|
} |
|
|
|
ptr = map_sysmem(addr, bytes); |
|
gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr)); |
|
debug("%lx\n", (ulong)ptr); |
|
|
|
return ptr; |
|
} |
|
|
|
#if CONFIG_IS_ENABLED(SYS_MALLOC_SIMPLE) |
|
void *calloc(size_t nmemb, size_t elem_size) |
|
{ |
|
size_t size = nmemb * elem_size; |
|
void *ptr; |
|
|
|
ptr = malloc(size); |
|
if (ptr) |
|
memset(ptr, '\0', size); |
|
|
|
return ptr; |
|
} |
|
#endif
|
|
|