29 lines
507 B
C
29 lines
507 B
C
#include <stddef.h>
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#include <stdio.h>
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#define HEAPSIZE 0x400
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signed char *sbrk( size_t size );
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union HEAP_TYPE
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{
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signed long dummy;
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signed char heap[HEAPSIZE];
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};
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static union HEAP_TYPE heap_area;
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/* End address allocated by sbrk */
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static signed char *brk = ( signed char * ) &heap_area;
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signed char *sbrk( size_t size )
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{
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signed char *p;
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if( brk + size > heap_area.heap + HEAPSIZE )
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{
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p = ( signed char * ) - 1;
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}
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else
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{
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p = brk;
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brk += size;
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}
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return p;
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}
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