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#include "lib.h"
#include <errno.h>
#include "sys9.h"
char end[];
static char *bloc = { end };
extern int _BRK_(void*);
char *
brk(char *p)
{
unsigned long n;
n = (unsigned long)p;
n += 3;
n &= ~3;
if(_BRK_((void*)n) < 0){
errno = ENOMEM;
return (char *)-1;
}
bloc = (char *)n;
return 0;
}
void *
sbrk(unsigned long n)
{
n += 3;
n &= ~3;
if(_BRK_((void *)(bloc+n)) < 0){
errno = ENOMEM;
return (void *)-1;
}
bloc += n;
return (void *)(bloc-n);
}
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