Retro68/gcc/newlib/libc/sys/sysvi386/sbrk.c
2012-03-27 01:51:53 +02:00

22 lines
309 B
C

extern end;
static void *curbrk = (char*)&end;
void *
sbrk(incr)
int incr; {
extern int errno;
extern int _brk(void *);
void *ptr = curbrk;
int t;
if (incr == 0)
return curbrk;
t = _brk (curbrk + incr);
if (t == -1 && errno)
return (void *)-1;
curbrk = ((char *)curbrk) + incr;
return ptr;
}