/*===========================================================================*
* do_mm_exit *
*===========================================================================*/
PUBLIC int do_mm_exit()
{
/* Perform the exit(status) system call. The real work is done by mm_exit(),
* which is also called when a process is killed by a signal.
*/
mm_exit(mp, status);
return(E_NO_MESSAGE); /* can't communicate from beyond the grave */
}
/*===========================================================================*
* do_mm_exit *
*===========================================================================*/
PUBLIC int do_mm_exit()
{
/* Perform the exit(status) system call. The real work is done by mm_exit(),
* which is also called when a process is killed by a signal.
*/
mm_exit(mp, status);
dont_reply = TRUE; /* don't reply to newly terminated process */
return(OK); /* pro forma return code */
}
int main()
{
mm_init();
char *str = "hello world!";
char *p = mm_malloc(strlen(str) + 1);
//void *p = NULL;
if (p == NULL) {
mm_dump();
printf("mm_malloc failed\n");
}
else {
strcpy(p, str);
mm_dump();
mm_free(p);
mm_dump();
}
mm_exit();
return 0;
}
/*===========================================================================*
* do_trace *
*===========================================================================*/
PUBLIC int do_trace()
{
register struct mproc *child;
/* the T_OK call is made by the child fork of the debugger before it execs
* the process to be traced
*/
if (request == T_OK) {/* enable tracing by parent for this process */
mp->mp_flags |= TRACED;
mm_out.m2_l2 = 0;
return(OK);
}
if ((child = findproc(pid)) == NIL_MPROC || !(child->mp_flags & STOPPED)) {
return(ESRCH);
}
/* all the other calls are made by the parent fork of the debugger to
* control execution of the child
*/
switch (request) {
case T_EXIT: /* exit */
mm_exit(child, (int)data);
mm_out.m2_l2 = 0;
return(OK);
case T_RESUME:
case T_STEP: /* resume execution */
if (data < 0 || data > _NSIG) return(EIO);
if (data > 0) { /* issue signal */
child->mp_flags &= ~TRACED; /* so signal is not diverted */
sig_proc(child, (int) data);
child->mp_flags |= TRACED;
}
child->mp_flags &= ~STOPPED;
break;
}
if (sys_trace(request, (int) (child - mproc), taddr, &data) != OK)
return(-errno);
mm_out.m2_l2 = data;
return(OK);
}
