mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-21 01:42:12 +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
66 lines
2.4 KiB
C++
66 lines
2.4 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;
|
|
}
|
|
|
|
Result ArbitrateLock(ams::svc::Handle thread_handle, uintptr_t address, uint32_t tag) {
|
|
/* Validate the input address. */
|
|
R_UNLESS(!IsKernelAddress(address), svc::ResultInvalidCurrentMemory());
|
|
R_UNLESS(util::IsAligned(address, sizeof(u32)), svc::ResultInvalidAddress());
|
|
|
|
R_RETURN(KConditionVariable::WaitForAddress(thread_handle, address, tag));
|
|
}
|
|
|
|
Result ArbitrateUnlock(uintptr_t address) {
|
|
/* Validate the input address. */
|
|
R_UNLESS(!IsKernelAddress(address), svc::ResultInvalidCurrentMemory());
|
|
R_UNLESS(util::IsAligned(address, sizeof(u32)), svc::ResultInvalidAddress());
|
|
|
|
R_RETURN(KConditionVariable::SignalToAddress(address));
|
|
}
|
|
|
|
}
|
|
|
|
/* ============================= 64 ABI ============================= */
|
|
|
|
Result ArbitrateLock64(ams::svc::Handle thread_handle, ams::svc::Address address, uint32_t tag) {
|
|
R_RETURN(ArbitrateLock(thread_handle, address, tag));
|
|
}
|
|
|
|
Result ArbitrateUnlock64(ams::svc::Address address) {
|
|
R_RETURN(ArbitrateUnlock(address));
|
|
}
|
|
|
|
/* ============================= 64From32 ABI ============================= */
|
|
|
|
Result ArbitrateLock64From32(ams::svc::Handle thread_handle, ams::svc::Address address, uint32_t tag) {
|
|
R_RETURN(ArbitrateLock(thread_handle, address, tag));
|
|
}
|
|
|
|
Result ArbitrateUnlock64From32(ams::svc::Address address) {
|
|
R_RETURN(ArbitrateUnlock(address));
|
|
}
|
|
|
|
}
|