KDBG/TaskRequestedPolicy.hpp

   1 //
   2 //  TaskRequestedPolicy.hpp
   3 //  system_cmds
   4 //
   5 //  Created by James McIlree on 6/23/14.
   6 //
   7 //
   8
   9
  10 // Using the raw struct was causing alignment issues on arm32; it seems that
  11 // structs have very relaxed alignment requirements on the v7 architectures.
  12 // The class wrapper forces a higher alignment and allows for some convenience
  13 // operators (compare, xor, etc)
  14
  15 class TaskRequestedPolicy {
  16     protected:
  17         union {
  18                 Kernel32::ptr_t _kernel_32[2];
  19                 Kernel64::ptr_t _kernel_64;
  20                 struct task_requested_policy _policy;
  21         } _content;
  22
  23     public:
  24         TaskRequestedPolicy() {}
  25
  26         TaskRequestedPolicy(struct task_requested_policy policy) {
  27                 static_assert(sizeof(_content) == sizeof(struct task_requested_policy), "Sanity");
  28                 _content._policy = policy;
  29         }
  30
  31         TaskRequestedPolicy(Kernel64::ptr_t trequested_0) {
  32                 static_assert(sizeof(_content) == sizeof(trequested_0), "Sanity");
  33                 _content._kernel_64 = trequested_0;
  34         }
  35
  36         TaskRequestedPolicy(Kernel32::ptr_t trequested_0, Kernel32::ptr_t trequested_1) {
  37                 static_assert(sizeof(_content) == (sizeof(trequested_0) + sizeof(trequested_1)), "Sanity");
  38                 _content._kernel_32[0] = trequested_0;
  39                 _content._kernel_32[1] = trequested_1;
  40         }
  41
  42         bool operator==(const TaskRequestedPolicy& other) const                 { return this->_content._kernel_64 == other._content._kernel_64; }
  43         bool operator!=(const TaskRequestedPolicy& other) const                 { return !(*this == other); }
  44
  45         TaskRequestedPolicy operator~() const                                   { return TaskRequestedPolicy(~this->_content._kernel_64); }
  46
  47         struct task_requested_policy as_struct() { return _content._policy; }
  48 };