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Show First 20 Lines • Show All 235 Lines • ▼ Show 20 Lines	cpu_fork(struct thread td1, struct proc p2, struct thread *td2, int flags)
}		}

/* Point the pcb to the top of the stack */		/* Point the pcb to the top of the stack */
pcb2 = get_pcb_td(td2);		pcb2 = get_pcb_td(td2);
td2->td_pcb = pcb2;		td2->td_pcb = pcb2;

copy_thread(td1, td2);		copy_thread(td1, td2);

		/* Reset debug registers in the new process */
		pcb2->pcb_dr0 = 0;
		pcb2->pcb_dr1 = 0;
		pcb2->pcb_dr2 = 0;
		pcb2->pcb_dr3 = 0;
		pcb2->pcb_dr6 = 0;
		pcb2->pcb_dr7 = 0;

/* Point mdproc and then copy over td1's contents */		/* Point mdproc and then copy over td1's contents */
mdp2 = &p2->p_md;		mdp2 = &p2->p_md;
bcopy(&p1->p_md, mdp2, sizeof(*mdp2));		bcopy(&p1->p_md, mdp2, sizeof(*mdp2));

/*		/*
* Copy the trap frame for the return to user mode as if from a		* Copy the trap frame for the return to user mode as if from a
* syscall. This copies most of the user mode register values.		* syscall. This copies most of the user mode register values.
* The -VM86_STACK_SPACE (-16) is so we can expand the trapframe		* The -VM86_STACK_SPACE (-16) is so we can expand the trapframe
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