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mem.c
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mem.c
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#include <stdint.h>
#include "mem.h"
#include "linker.h"
#include "errlog.h"
static uint8_t *gbaHeap;
void MemInit(void)
{
gbaHeap = (uint8_t*) GBA_HEAP_BEGIN;
}
void *Memalloc(size_t sizeBytes, size_t align)
{
uint8_t *ret;
--align;
ret = (uint8_t*) ((((uint32_t)gbaHeap) + align) & ~align);
if((uint32_t) ret >= GBA_HEAP_BEGIN + GBA_HEAP_SIZE - sizeBytes) // Out of heap :(
{
ErrorDisplayMessage("Memalloc: Out of heap", 1);
}
gbaHeap = ret + sizeBytes;
return ret;
}
void *Memcalloc(size_t sizeBytes, size_t align)
{
uint8_t *ret = Memalloc(sizeBytes, align);
size_t i;
// TODO: Optimize this (DMA and/or using words instead of bytes)
for(i = 0; i < sizeBytes; ++i)
ret[i] = 0;
return ret;
}