mirror of
https://github.com/genodelabs/genode.git
synced 2024-12-20 22:23:16 +00:00
103 lines
2.6 KiB
C
103 lines
2.6 KiB
C
/*
|
|
* \brief Helper code used by core as base framework
|
|
* \author Alexander Boettcher
|
|
* \date 2012-08-08
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2012-2017 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU Affero General Public License version 3.
|
|
*/
|
|
|
|
#ifndef _INCLUDE__NOVA__UTIL_H_
|
|
#define _INCLUDE__NOVA__UTIL_H_
|
|
|
|
#include <base/log.h>
|
|
#include <base/thread.h>
|
|
|
|
__attribute__((always_inline))
|
|
inline void nova_die(const char * text = 0)
|
|
{
|
|
/*
|
|
* If thread is de-constructed the sessions are already gone.
|
|
* Be careful when enabling printf here.
|
|
*/
|
|
while (1)
|
|
asm volatile ("ud2a" : : "a"(text));
|
|
}
|
|
|
|
|
|
inline void request_event_portal(Genode::addr_t const cap,
|
|
Genode::addr_t const sel, Genode::addr_t event)
|
|
{
|
|
Genode::Thread * myself = Genode::Thread::myself();
|
|
Nova::Utcb *utcb = reinterpret_cast<Nova::Utcb *>(myself->utcb());
|
|
|
|
/* save original receive window */
|
|
Nova::Crd orig_crd = utcb->crd_rcv;
|
|
|
|
/* request event-handler portal */
|
|
utcb->crd_rcv = Nova::Obj_crd(sel, 0);
|
|
utcb->msg()[0] = event;
|
|
utcb->set_msg_word(1);
|
|
|
|
Genode::uint8_t res = Nova::call(cap);
|
|
|
|
/* restore original receive window */
|
|
utcb->crd_rcv = orig_crd;
|
|
|
|
if (res)
|
|
Genode::error("request of event (", Genode::Hex(event), ") ",
|
|
"capability selector failed (res=", res, ")");
|
|
}
|
|
|
|
|
|
inline void request_native_ec_cap(Genode::addr_t const cap,
|
|
Genode::addr_t const sel)
|
|
{
|
|
request_event_portal(cap, sel , ~0UL);
|
|
}
|
|
|
|
|
|
inline void request_signal_sm_cap(Genode::addr_t const cap,
|
|
Genode::addr_t const sel)
|
|
{
|
|
request_event_portal(cap, sel, ~0UL - 1);
|
|
}
|
|
|
|
|
|
inline void translate_remote_pager(Genode::addr_t const cap,
|
|
Genode::addr_t const sel)
|
|
{
|
|
Genode::Thread * myself = Genode::Thread::myself();
|
|
Nova::Utcb *utcb = reinterpret_cast<Nova::Utcb *>(myself->utcb());
|
|
|
|
/* save original receive window */
|
|
Nova::Crd orig_crd = utcb->crd_rcv;
|
|
|
|
utcb->crd_rcv = Nova::Obj_crd();
|
|
|
|
Genode::uint8_t res = Nova::NOVA_OK;
|
|
enum {
|
|
TRANSLATE = true, THIS_PD = false, NON_GUEST = false, HOTSPOT = 0
|
|
};
|
|
|
|
/* translate one item */
|
|
utcb->msg()[0] = 0xaffe;
|
|
utcb->set_msg_word(1);
|
|
|
|
Nova::Obj_crd obj_crd(sel, 0);
|
|
if (utcb->append_item(obj_crd, HOTSPOT, THIS_PD, NON_GUEST, TRANSLATE))
|
|
/* trigger the translation */
|
|
res = Nova::call(cap);
|
|
|
|
/* restore original receive window */
|
|
utcb->crd_rcv = orig_crd;
|
|
|
|
if (res != Nova::NOVA_OK)
|
|
Genode::error("setting exception portals for vCPU failed res=", res);
|
|
}
|
|
#endif /* _INCLUDE__NOVA__UTIL_H_ */
|