40 lines
667 B
C
40 lines
667 B
C
#include <uart.h>
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#include <errcode.h>
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#include <utils.h>
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#include <kmalloc.h>
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#include <stddef.h>
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extern uint64_t __heap_start;
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extern uint64_t __heap_end;
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void *_heap_top = (void *)0;
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// simple 8-byte aligned linear allocation
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void *simple_alloc(size_t size)
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{
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if (!_heap_top) {
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_heap_top = (void *)&__heap_start;
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}
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size = (size_t)ALIGN8(size);
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if ((uint64_t)_heap_top + size >= (uint64_t)&__heap_end)
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exit(ERR_NO_MEM);
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void *ret = _heap_top;
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_heap_top = (void *)((uint64_t)_heap_top + size);
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return ret;
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}
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void *kmalloc(size_t size)
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{
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return simple_alloc(size);
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}
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void kfree(void *ptr)
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{
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// not implemented for now
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return;
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}
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