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sel4: non-core capability-space implementation

This commit is contained in:
Norman Feske 2015-05-13 11:10:31 +02:00 committed by Christian Helmuth
parent d6e3e47348
commit 38db52e7f5
1 changed files with 48 additions and 6 deletions
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54
repos/base-sel4/src/base/env/capability_space.cc vendored
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@ -39,7 +39,8 @@ namespace {
struct Local_capability_space
:
Capability_space_sel4<4*1024, 1024UL, Native_capability::Data>
Capability_space_sel4<4*1024, 1UL << NUM_CORE_MANAGED_SEL_LOG2,
Native_capability::Data>
{ };
static Local_capability_space &local_capability_space()
@ -50,6 +51,43 @@ namespace {
}
/*************************************************
** Allocator for component-local cap selectors **
*************************************************/
namespace {
class Sel_alloc : Bit_allocator<1UL << CSPACE_SIZE_LOG2>
{
private:
Lock _lock;
public:
Sel_alloc() { _reserve(0, 1UL << NUM_CORE_MANAGED_SEL_LOG2); }
unsigned alloc()
{
Lock::Guard guard(_lock);
return Bit_allocator::alloc();
}
void free(unsigned sel)
{
Lock::Guard guard(_lock);
Bit_allocator::free(sel);
}
};
static Sel_alloc &sel_alloc()
{
static Sel_alloc inst;
return inst;
}
}
/******************************************************
** Implementation of the Capability_space interface **
******************************************************/
@ -99,9 +137,11 @@ Native_capability Capability_space::lookup(Rpc_obj_key rpc_obj_key)
unsigned Capability_space::alloc_rcv_sel()
{
PDBG("not implemented");
for (;;);
return 0;
unsigned const rcv_sel = sel_alloc().alloc();
seL4_SetCapReceivePath(INITIAL_SEL_CNODE, rcv_sel, CSPACE_SIZE_LOG2);
return rcv_sel;
}
@ -113,7 +153,9 @@ void Capability_space::reset_sel(unsigned sel)
Native_capability Capability_space::import(Ipc_cap_data ipc_cap_data)
{
PDBG("not implemented");
Native_capability::Data &data =
local_capability_space().create_capability(ipc_cap_data.sel,
ipc_cap_data.rpc_obj_key);
return Native_capability();
return Native_capability(data);
}