static
int
Jdb_bp::set_debug_address_register(int num, Mword addr, Mword len,
Breakpoint::Mode mode, Task *task)
{
if (!task)
{
putstr(" => kernel task not allowed for breakpoints");
return 0;
}
if (num >= 0 && num <= 3)
{
Mword local_dr7;
Task *old_task = Kobject::dcast<Task*>(Kobject::from_dbg(Kobject_dbg::id_to_obj(bps[num].restricted_task())));
if (old_task)
{
// clear old breakpoint of other process
local_dr7 = get_debug_control_register(old_task);
clr_dr7(num, local_dr7);
set_debug_control_register(local_dr7, old_task);
}
bps[num].restrict_task(0, task->dbg_info()->dbg_id());
write_debug_register(num, addr, task);
local_dr7 = get_debug_control_register(task);
clr_dr7(num, local_dr7);
set_dr7(num, len, mode, local_dr7);
set_debug_control_register(local_dr7, task);
return 1;
}
return 0;
}
static
void
Jdb_bp::clr_debug_address_register(int num)
{
Task *task = Kobject::dcast<Task*>(Kobject::from_dbg(Kobject_dbg::id_to_obj(bps[num].restricted_task())));
Mword local_dr7 = get_debug_control_register(task);
clr_dr7(num, local_dr7);
set_debug_control_register(local_dr7, task);
}
static
int
Jdb_bp::set_debug_address_register(int num, Mword addr, Mword len,
Breakpoint::Mode mode, Space *)
{
clr_dr7(num, dr7);
set_dr7(num, len, mode, dr7);
switch (num)
{
case 0: write_debug_register(0, addr); break;
case 1: write_debug_register(1, addr); break;
case 2: write_debug_register(2, addr); break;
case 3: write_debug_register(3, addr); break;
default:;
}
return 1;
}
static
void
Jdb_bp::clr_debug_address_register(int num)
{
clr_dr7(num, dr7);
}