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#include <unistd.h>

#include <sys/syscall.h>

#include <errno.h>

extern void * ___brk_addr;

extern int __init_brk (void);

void *

__sbrk(ptrdiff_t increment)

{

    if (__init_brk () == 0)

    {

        register void * tmp asm ("%d1") = ___brk_addr+increment;

        __asm__ volatile ("movel %1,%/d0\n\t"

                          "trap  #0\n\t"

                          "movel %/d0,%0"

                :"=g" (___brk_addr)

                :"i" (SYS_brk),"g" (tmp) : "%d0");

        if (___brk_addr == tmp)

                return tmp-increment;

        errno = ENOMEM;

    }

    return ((void *) -1);

}

#include <gnu-stabs.h>

#ifdef weak_alias

weak_alias (__sbrk, sbrk);

#endif