lunaix-os/scripts/gdb/lunadbg/utils.py

   1 import gdb
   2
   3 def pid_argument(argument):
   4     if not argument:
   5         return "__current"
   6     else:
   7         return f"sched_ctx.procs[({argument})]"
   8
   9 def llist_foreach(head: gdb.Value, container_type: gdb.Type, field, cb, inclusive=True):
  10     c = head
  11     i = 0
  12     offset = gdb.Value(0).cast(container_type)[field].address
  13     offset_p = int(offset)
  14
  15     if not inclusive:
  16         c = c["next"]
  17         if c == head:
  18             return 0
  19
  20     while (True):
  21         current = gdb.Value(int(c) - offset_p)
  22         el = current.cast(container_type)
  23         cb(i, el)
  24         c = c["next"]
  25         i+=1
  26         if c == head:
  27             break
  28     return i
  29
  30 def get_dnode_name(dnode):
  31     return dnode['name']['value'].string()
  32
  33 def get_dnode_path(dnode):
  34     components = []
  35     current = dnode
  36     while (current != 0 and current != current['parent']):
  37         components.append(get_dnode_name(current))
  38         current = current['parent']
  39     if len(components) == 0:
  40         components.append('')
  41     components.append('')
  42     return '/'.join(reversed(components))