diff options
Diffstat (limited to 'src/core/hle/kernel/svc/svc_condition_variable.cpp')
-rw-r--r-- | src/core/hle/kernel/svc/svc_condition_variable.cpp | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/src/core/hle/kernel/svc/svc_condition_variable.cpp b/src/core/hle/kernel/svc/svc_condition_variable.cpp new file mode 100644 index 000000000..8ad1a0b8f --- /dev/null +++ b/src/core/hle/kernel/svc/svc_condition_variable.cpp @@ -0,0 +1,77 @@ +// 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. + if (IsKernelAddress(address)) { + LOG_ERROR(Kernel_SVC, "Attempted to wait on kernel address (address={:08X})", address); + return ResultInvalidCurrentMemory; + } + if (!Common::IsAligned(address, sizeof(s32))) { + LOG_ERROR(Kernel_SVC, "Address must be 4 byte aligned (address={:08X})", address); + return 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. + 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 |