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#include <stdlib.h>
#include <console/console.h>
#if CONFIG_DEBUG_MALLOC
#define MALLOCDBG(x...) printk(BIOS_SPEW, x)
#else
#define MALLOCDBG(x...)
#endif
extern unsigned char _heap, _eheap;
static void *free_mem_ptr = &_heap; /* Start of heap */
static void *free_mem_end_ptr = &_eheap; /* End of heap */
void *malloc(size_t size)
{
void *p;
MALLOCDBG("%s Enter, size %ld, free_mem_ptr %p\n", __func__, size, free_mem_ptr);
/* Checking arguments */
if (size < 0)
die("Error! malloc: size < 0");
/* Overzealous linker check */
if (free_mem_ptr <= 0)
die("Error! malloc: Free_mem_ptr <= 0");
free_mem_ptr = (void *)ALIGN((unsigned long)free_mem_ptr, 4);
p = (void *) free_mem_ptr;
free_mem_ptr += size;
if (free_mem_ptr >= free_mem_end_ptr)
die("Error! malloc: Out of memory (free_mem_ptr >= free_mem_end_ptr)");
MALLOCDBG("malloc %p\n", p);
return p;
}
void free(void *where)
{
/* Don't care */
MALLOCDBG("free %p\n", where);
}
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