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// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "core/core.h"
#include "core/hle/kernel/k_memory_layout.h"
#include "core/hle/kernel/k_process.h"
#include "core/hle/kernel/svc.h"
namespace Kernel::Svc {
/// Attempts to locks a mutex
Result ArbitrateLock(Core::System& system, Handle thread_handle, VAddr address, u32 tag) {
LOG_TRACE(Kernel_SVC, "called thread_handle=0x{:08X}, address=0x{:X}, tag=0x{:08X}",
thread_handle, address, tag);
// Validate the input address.
if (IsKernelAddress(address)) {
LOG_ERROR(Kernel_SVC, "Attempting to arbitrate a lock on a kernel address (address={:08X})",
address);
return ResultInvalidCurrentMemory;
}
if (!Common::IsAligned(address, sizeof(u32))) {
LOG_ERROR(Kernel_SVC, "Input address must be 4 byte aligned (address: {:08X})", address);
return ResultInvalidAddress;
}
return system.Kernel().CurrentProcess()->WaitForAddress(thread_handle, address, tag);
}
/// Unlock a mutex
Result ArbitrateUnlock(Core::System& system, VAddr address) {
LOG_TRACE(Kernel_SVC, "called address=0x{:X}", address);
// Validate the input address.
if (IsKernelAddress(address)) {
LOG_ERROR(Kernel_SVC,
"Attempting to arbitrate an unlock on a kernel address (address={:08X})",
address);
return ResultInvalidCurrentMemory;
}
if (!Common::IsAligned(address, sizeof(u32))) {
LOG_ERROR(Kernel_SVC, "Input address must be 4 byte aligned (address: {:08X})", address);
return ResultInvalidAddress;
}
return system.Kernel().CurrentProcess()->SignalToAddress(address);
}
Result ArbitrateLock64(Core::System& system, Handle thread_handle, uint64_t address, uint32_t tag) {
R_RETURN(ArbitrateLock(system, thread_handle, address, tag));
}
Result ArbitrateUnlock64(Core::System& system, uint64_t address) {
R_RETURN(ArbitrateUnlock(system, address));
}
Result ArbitrateLock64From32(Core::System& system, Handle thread_handle, uint32_t address,
uint32_t tag) {
R_RETURN(ArbitrateLock(system, thread_handle, address, tag));
}
Result ArbitrateUnlock64From32(Core::System& system, uint32_t address) {
R_RETURN(ArbitrateUnlock(system, address));
}
} // namespace Kernel::Svc
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