void
db_set_breakpoint(db_addr_t addr, int count)
{
db_breakpoint_t bkpt;
if (db_find_breakpoint(addr)) {
db_printf("Already set.\n");
return;
}
#ifdef DB_VALID_BREAKPOINT
if (!DB_VALID_BREAKPOINT(addr)) {
db_printf("Not a valid address for a breakpoint.\n");
return;
}
#endif
bkpt = db_breakpoint_alloc();
if (bkpt == 0) {
db_printf("Too many breakpoints.\n");
return;
}
bkpt->address = addr;
bkpt->flags = 0;
bkpt->init_count = count;
bkpt->count = count;
bkpt->link = db_breakpoint_list;
db_breakpoint_list = bkpt;
}
void
db_set_breakpoint(
task_t task,
db_addr_t addr,
int count,
thread_act_t thr_act,
boolean_t task_bpt)
{
register db_breakpoint_t bkpt;
db_breakpoint_t alloc_bkpt = 0;
vm_offset_t task_thd;
bkpt = db_find_breakpoint(task, addr);
if (bkpt) {
if (thr_act == THR_ACT_NULL
|| db_find_thread_breakpoint(bkpt, thr_act)) {
db_printf("Already set.\n");
return;
}
} else {
if (!DB_CHECK_ACCESS(addr, BKPT_SIZE, task)) {
if (task) {
db_printf("Warning: non-resident page for breakpoint at %lX",
addr);
db_printf(" in task %lX.\n", task);
} else {
db_printf("Cannot set breakpoint at %lX in kernel space.\n",
addr);
return;
}
}
alloc_bkpt = bkpt = db_breakpoint_alloc();
if (bkpt == 0) {
db_printf("Too many breakpoints.\n");
return;
}
bkpt->task = task;
bkpt->flags = (task && thr_act == THR_ACT_NULL)?
(BKPT_USR_GLOBAL|BKPT_1ST_SET): 0;
bkpt->address = addr;
bkpt->threads = 0;
}
if (db_breakpoint_list == 0)
db_breakpoint_number = 0;
task_thd = (task_bpt) ? (vm_offset_t)(thr_act->task)
: (vm_offset_t)thr_act;
if (db_add_thread_breakpoint(bkpt, task_thd, count, task_bpt) < 0) {
if (alloc_bkpt)
db_breakpoint_free(alloc_bkpt);
db_printf("Too many thread_breakpoints.\n");
} else {
db_printf("set breakpoint #%x\n", db_breakpoint_number);
if (alloc_bkpt) {
bkpt->link = db_breakpoint_list;
db_breakpoint_list = bkpt;
}
}
}
db_thread_breakpoint_t
db_find_thread_breakpoint_here(
task_t task,
db_addr_t addr)
{
db_breakpoint_t bkpt;
bkpt = db_find_breakpoint(task, (db_addr_t)addr);
if (bkpt == 0)
return(0);
return(db_find_thread_breakpoint(bkpt, current_act()));
}