mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-09-19 22:59:00 +00:00
96f95b9f95
* result: try out some experimental shenanigans * result: sketch out some more shenanigans * result: see what it looks like to convert kernel to use result conds instead of guards * make rest of kernel use experimental new macro-ing
107 lines
4.5 KiB
C++
107 lines
4.5 KiB
C++
/*
|
|
* Copyright (c) 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 IsKernelAddress(uintptr_t address) {
|
|
return KernelVirtualAddressSpaceBase <= address && address < KernelVirtualAddressSpaceEnd;
|
|
}
|
|
|
|
constexpr bool IsValidSignalType(ams::svc::SignalType type) {
|
|
switch (type) {
|
|
case ams::svc::SignalType_Signal:
|
|
case ams::svc::SignalType_SignalAndIncrementIfEqual:
|
|
case ams::svc::SignalType_SignalAndModifyByWaitingCountIfEqual:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
constexpr bool IsValidArbitrationType(ams::svc::ArbitrationType type) {
|
|
switch (type) {
|
|
case ams::svc::ArbitrationType_WaitIfLessThan:
|
|
case ams::svc::ArbitrationType_DecrementAndWaitIfLessThan:
|
|
case ams::svc::ArbitrationType_WaitIfEqual:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
Result WaitForAddress(uintptr_t address, ams::svc::ArbitrationType arb_type, int32_t value, int64_t timeout_ns) {
|
|
/* Validate input. */
|
|
R_UNLESS(AMS_LIKELY(!IsKernelAddress(address)), svc::ResultInvalidCurrentMemory());
|
|
R_UNLESS(util::IsAligned(address, sizeof(int32_t)), svc::ResultInvalidAddress());
|
|
R_UNLESS(IsValidArbitrationType(arb_type), svc::ResultInvalidEnumValue());
|
|
|
|
/* Convert timeout from nanoseconds to ticks. */
|
|
s64 timeout;
|
|
if (timeout_ns > 0) {
|
|
const ams::svc::Tick offset_tick(TimeSpan::FromNanoSeconds(timeout_ns));
|
|
if (AMS_LIKELY(offset_tick > 0)) {
|
|
timeout = KHardwareTimer::GetTick() + offset_tick + 2;
|
|
if (AMS_UNLIKELY(timeout <= 0)) {
|
|
timeout = std::numeric_limits<s64>::max();
|
|
}
|
|
} else {
|
|
timeout = std::numeric_limits<s64>::max();
|
|
}
|
|
} else {
|
|
timeout = timeout_ns;
|
|
}
|
|
|
|
R_RETURN(GetCurrentProcess().WaitAddressArbiter(address, arb_type, value, timeout));
|
|
}
|
|
|
|
Result SignalToAddress(uintptr_t address, ams::svc::SignalType signal_type, int32_t value, int32_t count) {
|
|
/* Validate input. */
|
|
R_UNLESS(AMS_LIKELY(!IsKernelAddress(address)), svc::ResultInvalidCurrentMemory());
|
|
R_UNLESS(util::IsAligned(address, sizeof(int32_t)), svc::ResultInvalidAddress());
|
|
R_UNLESS(IsValidSignalType(signal_type), svc::ResultInvalidEnumValue());
|
|
|
|
R_RETURN(GetCurrentProcess().SignalAddressArbiter(address, signal_type, value, count));
|
|
}
|
|
|
|
}
|
|
|
|
/* ============================= 64 ABI ============================= */
|
|
|
|
Result WaitForAddress64(ams::svc::Address address, ams::svc::ArbitrationType arb_type, int32_t value, int64_t timeout_ns) {
|
|
R_RETURN(WaitForAddress(address, arb_type, value, timeout_ns));
|
|
}
|
|
|
|
Result SignalToAddress64(ams::svc::Address address, ams::svc::SignalType signal_type, int32_t value, int32_t count) {
|
|
R_RETURN(SignalToAddress(address, signal_type, value, count));
|
|
}
|
|
|
|
/* ============================= 64From32 ABI ============================= */
|
|
|
|
Result WaitForAddress64From32(ams::svc::Address address, ams::svc::ArbitrationType arb_type, int32_t value, int64_t timeout_ns) {
|
|
R_RETURN(WaitForAddress(address, arb_type, value, timeout_ns));
|
|
}
|
|
|
|
Result SignalToAddress64From32(ams::svc::Address address, ams::svc::SignalType signal_type, int32_t value, int32_t count) {
|
|
R_RETURN(SignalToAddress(address, signal_type, value, count));
|
|
}
|
|
|
|
}
|