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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/kernel.h"
#include "core/hle/kernel/svc.h"
#include "core/hle/kernel/svc_results.h"
namespace Kernel::Svc {
/// Wait process wide key atomic
Result WaitProcessWideKeyAtomic(Core::System& system, VAddr address, VAddr cv_key, u32 tag,
s64 timeout_ns) {
LOG_TRACE(Kernel_SVC, "called address={:X}, cv_key={:X}, tag=0x{:08X}, timeout_ns={}", address,
cv_key, tag, timeout_ns);
// Validate input.
R_UNLESS(!IsKernelAddress(address), ResultInvalidCurrentMemory);
R_UNLESS(Common::IsAligned(address, sizeof(s32)), ResultInvalidAddress);
// Convert timeout from nanoseconds to ticks.
s64 timeout{};
if (timeout_ns > 0) {
const s64 offset_tick(timeout_ns);
if (offset_tick > 0) {
timeout = offset_tick + 2;
if (timeout <= 0) {
timeout = std::numeric_limits<s64>::max();
}
} else {
timeout = std::numeric_limits<s64>::max();
}
} else {
timeout = timeout_ns;
}
// Wait on the condition variable.
R_RETURN(
GetCurrentProcess(system.Kernel())
.WaitConditionVariable(address, Common::AlignDown(cv_key, sizeof(u32)), tag, timeout));
}
/// Signal process wide key
void SignalProcessWideKey(Core::System& system, VAddr cv_key, s32 count) {
LOG_TRACE(Kernel_SVC, "called, cv_key=0x{:X}, count=0x{:08X}", cv_key, count);
// Signal the condition variable.
return GetCurrentProcess(system.Kernel())
.SignalConditionVariable(Common::AlignDown(cv_key, sizeof(u32)), count);
}
Result WaitProcessWideKeyAtomic64(Core::System& system, uint64_t address, uint64_t cv_key,
uint32_t tag, int64_t timeout_ns) {
R_RETURN(WaitProcessWideKeyAtomic(system, address, cv_key, tag, timeout_ns));
}
void SignalProcessWideKey64(Core::System& system, uint64_t cv_key, int32_t count) {
SignalProcessWideKey(system, cv_key, count);
}
Result WaitProcessWideKeyAtomic64From32(Core::System& system, uint32_t address, uint32_t cv_key,
uint32_t tag, int64_t timeout_ns) {
R_RETURN(WaitProcessWideKeyAtomic(system, address, cv_key, tag, timeout_ns));
}
void SignalProcessWideKey64From32(Core::System& system, uint32_t cv_key, int32_t count) {
SignalProcessWideKey(system, cv_key, count);
}
} // namespace Kernel::Svc
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