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 */
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 */
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static chunk_t *chunk0;
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static chunk_t *chunk0;
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static spinlock_t heaplock;
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static spinlock_t heaplock;
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void heap_init(__address heap, size_t size)
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void early_heap_init(__address heap, size_t size)
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{
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{
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    spinlock_initialize(&heaplock);
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    spinlock_initialize(&heaplock);
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    memsetb(heap, size, 0);
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    memsetb(heap, size, 0);
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    chunk0 = (chunk_t *) heap;
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    chunk0 = (chunk_t *) heap;
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    chunk0->used = 0;
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    chunk0->used = 0;
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}
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}
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/*
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/*
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 * Uses first-fit algorithm.
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 * Uses first-fit algorithm.
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 */
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 */
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void *malloc(size_t size)
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void *early_malloc(size_t size)
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{
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{
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    pri_t pri;
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    pri_t pri;
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    chunk_t *x, *y, *z;
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    chunk_t *x, *y, *z;
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    if (size == 0)
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    if (size == 0)
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    spinlock_unlock(&heaplock);
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    spinlock_unlock(&heaplock);
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    cpu_priority_restore(pri);
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    cpu_priority_restore(pri);
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    return NULL;
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    return NULL;
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}
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}
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void free(void *ptr)
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void early_free(void *ptr)
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{
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{
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    pri_t pri;
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    pri_t pri;
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    chunk_t *x, *y, *z;
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    chunk_t *x, *y, *z;
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    if (!ptr)
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    if (!ptr)