l4/pkg/libloader/include/remote_app_model

   1 // vi:ft=cpp
   2 /*
   3  * (c) 2008-2009 Alexander Warg <warg@os.inf.tu-dresden.de>
   4  *     economic rights: Technische Universität Dresden (Germany)
   5  * This file is part of TUD:OS and distributed under the terms of the
   6  * GNU Lesser General Public License 2.1.
   7  * Please see the COPYING-LGPL-2.1 file for details.
   8  */
   9
  10 #pragma once
  11
  12 #include <l4/re/env>
  13 #include <l4/re/error_helper>
  14 #include <l4/sys/task>
  15 #include <l4/sys/thread>
  16 #include <l4/sys/scheduler>
  17 #include <l4/sys/factory>
  18
  19 namespace Ldr {
  20
  21 struct Remote_app_std_caps
  22 {
  23   enum Base_cap
  24   {
  25     Task_cap               = 1,
  26     Factory_cap            = 2,
  27     Rm_thread_cap          = 3,
  28     External_rm_cap        = 5,
  29     Allocator_cap          = 7,
  30     Names_cap,
  31     Log_cap,
  32     Parent_cap,
  33     Kip_cap,
  34     Scheduler_cap,
  35     First_free,
  36   };
  37 };
  38
  39 struct Remote_app_std_prios
  40 {
  41   enum Prio
  42   {
  43     Default_thread_prio = 2
  44   };
  45 };
  46
  47 template< typename Base, typename STD_CAPS = Remote_app_std_caps,
  48           typename PRIOS = Remote_app_std_prios >
  49 class Remote_app_model : public Base, protected STD_CAPS, protected PRIOS
  50 {
  51 public:
  52   typedef STD_CAPS Caps;
  53   typedef PRIOS Prios;
  54
  55   virtual ~Remote_app_model() throw() {}
  56
  57   template< typename A1, typename A2, typename A3 >
  58   Remote_app_model(A1 const &a1, A2 const &a2, A3 const & a3)
  59   : Base(a1, a2, a3) {}
  60
  61   template< typename A1, typename A2 >
  62   Remote_app_model(A1 const &a1, A2 const &a2) : Base(a1, a2) {}
  63
  64   template< typename A1 >
  65   explicit Remote_app_model(A1 const &a1) : Base(a1) {}
  66
  67   Remote_app_model() : Base() {}
  68
  69   L4Re::Env *add_env()
  70   {
  71     // the terminator
  72     this->_stack.push(l4re_env_cap_entry_t());
  73
  74     l4_cap_idx_t first_free
  75       = this->push_initial_caps(Caps::First_free << L4_CAP_SHIFT);
  76
  77     l4re_env_cap_entry_t *caps
  78       = reinterpret_cast<l4re_env_cap_entry_t*>(this->_stack.ptr());
  79
  80     L4Re::Env *env = this->_stack.push(L4Re::Env());
  81
  82     env->mem_alloc(L4::Cap<L4Re::Mem_alloc>(Caps::Allocator_cap << L4_CAP_SHIFT));
  83     env->parent(L4::Cap<L4Re::Parent>(Caps::Parent_cap << L4_CAP_SHIFT));
  84     env->scheduler(L4::Cap<L4::Scheduler>(Caps::Scheduler_cap << L4_CAP_SHIFT));
  85     env->rm(L4::Cap<L4Re::Rm>(Caps::External_rm_cap << L4_CAP_SHIFT));
  86     env->log(L4::Cap<L4Re::Log>(Caps::Log_cap << L4_CAP_SHIFT));
  87     env->main_thread(L4::Cap<L4::Thread>(Caps::Rm_thread_cap << L4_CAP_SHIFT));
  88     env->factory(L4::Cap<L4::Factory>(Caps::Factory_cap << L4_CAP_SHIFT));
  89     env->first_free_cap(first_free >> L4_CAP_SHIFT);
  90     env->utcb_area(l4_fpage(this->_info.utcbs_start, this->_info.utcbs_log2size, 0));
  91     env->first_free_utcb(this->_info.utcbs_start + L4_UTCB_OFFSET);
  92     env->initial_caps(this->_stack.relocate(caps));
  93     return env;
  94   }
  95
  96   L4::Cap<void> prog_kip_ds() const
  97   { return L4::Cap<void>(Caps::Kip_cap << L4_CAP_SHIFT); }
  98
  99   void const *generate_l4aux(char const *name)
 100   {
 101     this->_stack.push(l4_umword_t(this->prog_info()->ldr_flags));
 102     this->_stack.push(l4_umword_t(this->prog_info()->l4re_dbg));
 103     this->_stack.push(l4_umword_t(prog_kip_ds().cap()));
 104     return this->_stack.push_local_ptr(name);
 105   }
 106
 107   void prog_reserve_utcb_area()
 108   {
 109     this->prog_attach_ds(this->prog_info()->utcbs_start,
 110                          1UL << this->prog_info()->utcbs_log2size,
 111                          this->reserved_area(), 0, 0, "attaching utcb area");
 112   }
 113
 114   void prog_attach_kip()
 115   {
 116     this->prog_attach_ds(this->prog_info()->kip, L4_PAGESIZE,
 117                          this->local_kip_ds(), 0,
 118                          L4Re::Rm::Read_only, "attaching KIP segment");
 119   }
 120
 121   void prog_attach_stack(typename Base::Dataspace app_stack)
 122   {
 123     this->prog_attach_ds(this->_stack.target_addr(), this->_stack.stack_size(),
 124                          app_stack, 0, 0, "attaching stack segment");
 125   }
 126
 127   void start_prog(L4Re::Env const *env)
 128   {
 129     using L4Re::chksys;
 130     using L4::Cap;
 131
 132     L4::Cap<L4::Task> ntask;
 133     L4::Cap<L4::Thread> nthread;
 134     L4::Cap<L4::Factory> factory;
 135
 136     this->get_task_caps(&factory, &ntask, &nthread);
 137
 138     chksys(factory->create_task(ntask, env->utcb_area()));
 139     chksys(factory->create_thread(nthread));
 140
 141     chksys(ntask->map(L4Re::This_task, ntask.fpage(),
 142           Cap<L4::Task>(L4Re::This_task).snd_base()));
 143     chksys(ntask->map(L4Re::This_task, this->_info.factory,
 144           env->factory().snd_base()));
 145     chksys(ntask->map(L4Re::This_task, nthread.fpage(),
 146           env->main_thread().snd_base()));
 147     chksys(ntask->map(L4Re::This_task, this->_info.scheduler,
 148           env->scheduler().snd_base()));
 149     chksys(ntask->map(L4Re::This_task, this->_info.parent,
 150           env->parent().snd_base()));
 151     chksys(ntask->map(L4Re::This_task, this->_info.log,
 152           env->log().snd_base()));
 153     chksys(ntask->map(L4Re::This_task, this->_info.rm,
 154           env->rm().snd_base()));
 155     chksys(ntask->map(L4Re::This_task, this->_info.mem_alloc,
 156           env->mem_alloc().snd_base()));
 157     chksys(ntask->map(L4Re::This_task, this->local_kip_cap().fpage(),
 158           prog_kip_ds().snd_base()));
 159
 160     this->map_initial_caps(ntask, Caps::First_free << L4_CAP_SHIFT);
 161
 162     L4::Thread::Attr th_attr;
 163     th_attr.pager(env->rm());
 164     th_attr.exc_handler(env->rm());
 165     th_attr.bind((l4_utcb_t*)this->_info.utcbs_start, ntask);
 166     chksys(nthread->control(th_attr));
 167
 168     chksys(this->run_thread(nthread,
 169                             l4_sched_param(Prios::Default_thread_prio)));
 170
 171     nthread->ex_regs(this->_info.entry, this->_stack.target_ptr(), 0);
 172   }
 173
 174
 175 };
 176
 177 }