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Atmosphere/libraries/libmesosphere/source/svc/kern_svc_interrupt_event.cpp
2020-12-02 06:43:37 -08:00

76 lines
2.8 KiB
C++

/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <mesosphere.hpp>
namespace ams::kern::svc {
/* ============================= Common ============================= */
namespace {
constexpr bool IsValidInterruptType(ams::svc::InterruptType type) {
switch (type) {
case ams::svc::InterruptType_Edge:
case ams::svc::InterruptType_Level:
return true;
default:
return false;
}
}
Result CreateInterruptEvent(ams::svc::Handle *out, int32_t interrupt_id, ams::svc::InterruptType type) {
/* Validate the type. */
R_UNLESS(IsValidInterruptType(type), svc::ResultInvalidEnumValue());
/* Check whether the interrupt is allowed. */
auto &process = GetCurrentProcess();
R_UNLESS(process.IsPermittedInterrupt(interrupt_id), svc::ResultNotFound());
/* Get the current handle table. */
auto &handle_table = process.GetHandleTable();
/* Create the interrupt event. */
KInterruptEvent *event = KInterruptEvent::Create();
R_UNLESS(event != nullptr, svc::ResultOutOfResource());
ON_SCOPE_EXIT { event->Close(); };
/* Initialize the event. */
R_TRY(event->Initialize(interrupt_id, type));
/* Register the event. */
KInterruptEvent::Register(event);
/* Add the event to the handle table. */
R_TRY(handle_table.Add(out, event));
return ResultSuccess();
}
}
/* ============================= 64 ABI ============================= */
Result CreateInterruptEvent64(ams::svc::Handle *out_read_handle, int32_t interrupt_id, ams::svc::InterruptType interrupt_type) {
return CreateInterruptEvent(out_read_handle, interrupt_id, interrupt_type);
}
/* ============================= 64From32 ABI ============================= */
Result CreateInterruptEvent64From32(ams::svc::Handle *out_read_handle, int32_t interrupt_id, ams::svc::InterruptType interrupt_type) {
return CreateInterruptEvent(out_read_handle, interrupt_id, interrupt_type);
}
}