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-rw-r--r--src/core/hle/kernel/address_arbiter.cpp59
-rw-r--r--src/core/hle/kernel/errors.h2
-rw-r--r--src/core/hle/kernel/thread.cpp6
-rw-r--r--src/core/hle/kernel/thread.h6
-rw-r--r--src/yuzu/debugger/wait_tree.cpp4
5 files changed, 71 insertions, 6 deletions
diff --git a/src/core/hle/kernel/address_arbiter.cpp b/src/core/hle/kernel/address_arbiter.cpp
index cfd2c1590..367c4520d 100644
--- a/src/core/hle/kernel/address_arbiter.cpp
+++ b/src/core/hle/kernel/address_arbiter.cpp
@@ -5,14 +5,31 @@
#include "common/assert.h"
#include "common/common_funcs.h"
#include "common/common_types.h"
+#include "core/core.h"
+#include "core/hle/kernel/errors.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/thread.h"
+#include "core/hle/lock.h"
#include "core/memory.h"
namespace Kernel {
namespace AddressArbiter {
+ // Performs actual address waiting logic.
+ ResultCode WaitForAddress(VAddr address, s64 timeout) {
+ SharedPtr<Thread> current_thread = GetCurrentThread();
+ current_thread->arb_wait_address = address;
+ current_thread->arb_wait_result = RESULT_TIMEOUT;
+ current_thread->status = THREADSTATUS_WAIT_ARB;
+ current_thread->wakeup_callback = nullptr;
+
+ current_thread->WakeAfterDelay(timeout);
+
+ Core::System::GetInstance().CpuCore(current_thread->processor_id).PrepareReschedule();
+ return RESULT_SUCCESS;
+ }
+
// Signals an address being waited on.
ResultCode SignalToAddress(VAddr address, s32 value, s32 num_to_wake) {
// TODO
@@ -33,14 +50,48 @@ namespace Kernel {
// Waits on an address if the value passed is less than the argument value, optionally decrementing.
ResultCode WaitForAddressIfLessThan(VAddr address, s32 value, s64 timeout, bool should_decrement) {
- // TODO
- return RESULT_SUCCESS;
+ // Ensure that we can read the address.
+ if (!Memory::IsValidVirtualAddress(address)) {
+ return ERR_INVALID_ADDRESS_STATE;
+ }
+
+ s32 cur_value;
+ // Get value, decrementing if less than
+ {
+ // Decrement if less than must be an atomic operation.
+ std::lock_guard<std::recursive_mutex> lock(HLE::g_hle_lock);
+ cur_value = (s32)Memory::Read32(address);
+ if (cur_value < value) {
+ Memory::Write32(address, (u32)(cur_value - 1));
+ }
+ }
+ if (cur_value >= value) {
+ return ERR_INVALID_STATE;
+ }
+ // Short-circuit without rescheduling, if timeout is zero.
+ if (timeout == 0) {
+ return RESULT_TIMEOUT;
+ }
+
+ return WaitForAddress(address, timeout);
}
// Waits on an address if the value passed is equal to the argument value.
ResultCode WaitForAddressIfEqual(VAddr address, s32 value, s64 timeout) {
- // TODO
- return RESULT_SUCCESS;
+ // Ensure that we can read the address.
+ if (!Memory::IsValidVirtualAddress(address)) {
+ return ERR_INVALID_ADDRESS_STATE;
+ }
+ // Only wait for the address if equal.
+ if ((s32)Memory::Read32(address) != value) {
+ return ERR_INVALID_STATE;
+ }
+ // Short-circuit without rescheduling, if timeout is zero.
+ if (timeout == 0) {
+ return RESULT_TIMEOUT;
+ }
+
+ return WaitForAddress(address, timeout);
}
} // namespace AddressArbiter
} // namespace Kernel \ No newline at end of file
diff --git a/src/core/hle/kernel/errors.h b/src/core/hle/kernel/errors.h
index 7ac960042..221cb1bb5 100644
--- a/src/core/hle/kernel/errors.h
+++ b/src/core/hle/kernel/errors.h
@@ -29,6 +29,7 @@ enum {
SynchronizationCanceled = 118,
TooLarge = 119,
InvalidEnumValue = 120,
+ InvalidState = 125,
};
}
@@ -49,6 +50,7 @@ constexpr ResultCode ERR_OUT_OF_MEMORY(-1);
constexpr ResultCode ERR_INVALID_ADDRESS(ErrorModule::Kernel, ErrCodes::InvalidAddress);
constexpr ResultCode ERR_INVALID_ADDRESS_STATE(ErrorModule::Kernel, ErrCodes::InvalidMemoryState);
constexpr ResultCode ERR_INVALID_HANDLE(ErrorModule::Kernel, ErrCodes::InvalidHandle);
+constexpr ResultCode ERR_INVALID_STATE(ErrorModule::Kernel, ErrCodes::InvalidState);
constexpr ResultCode ERR_INVALID_POINTER(-1);
constexpr ResultCode ERR_INVALID_OBJECT_ADDR(-1);
constexpr ResultCode ERR_NOT_AUTHORIZED(-1);
diff --git a/src/core/hle/kernel/thread.cpp b/src/core/hle/kernel/thread.cpp
index cffa7ca83..2f333ec34 100644
--- a/src/core/hle/kernel/thread.cpp
+++ b/src/core/hle/kernel/thread.cpp
@@ -140,6 +140,11 @@ static void ThreadWakeupCallback(u64 thread_handle, int cycles_late) {
}
}
+ if (thread->arb_wait_address != 0) {
+ ASSERT(thread->status == THREADSTATUS_WAIT_ARB);
+ thread->arb_wait_address = 0;
+ }
+
if (resume)
thread->ResumeFromWait();
}
@@ -179,6 +184,7 @@ void Thread::ResumeFromWait() {
case THREADSTATUS_WAIT_SLEEP:
case THREADSTATUS_WAIT_IPC:
case THREADSTATUS_WAIT_MUTEX:
+ case THREADSTATUS_WAIT_ARB:
break;
case THREADSTATUS_READY:
diff --git a/src/core/hle/kernel/thread.h b/src/core/hle/kernel/thread.h
index 023c9dbe9..79e5d6e5c 100644
--- a/src/core/hle/kernel/thread.h
+++ b/src/core/hle/kernel/thread.h
@@ -228,8 +228,10 @@ public:
// If waiting on a ConditionVariable, this is the ConditionVariable address
VAddr condvar_wait_address;
- VAddr mutex_wait_address; ///< If waiting on a Mutex, this is the mutex address
- Handle wait_handle; ///< The handle used to wait for the mutex.
+ VAddr mutex_wait_address; ///< If waiting on a Mutex, this is the mutex address
+ Handle wait_handle; ///< The handle used to wait for the mutex.
+ VAddr arb_wait_address; ///< If waiting for an AddressArbiter, this is the address
+ ResultCode arb_wait_result; ///< If waiting for an AddressArbiter, this is the result that will be returned.
std::string name;
diff --git a/src/yuzu/debugger/wait_tree.cpp b/src/yuzu/debugger/wait_tree.cpp
index 017bef13c..800e431bd 100644
--- a/src/yuzu/debugger/wait_tree.cpp
+++ b/src/yuzu/debugger/wait_tree.cpp
@@ -213,6 +213,9 @@ QString WaitTreeThread::GetText() const {
case THREADSTATUS_WAIT_MUTEX:
status = tr("waiting for mutex");
break;
+ case THREADSTATUS_WAIT_MUTEX:
+ status = tr("waiting for address arbiter");
+ break;
case THREADSTATUS_DORMANT:
status = tr("dormant");
break;
@@ -240,6 +243,7 @@ QColor WaitTreeThread::GetColor() const {
case THREADSTATUS_WAIT_SYNCH_ALL:
case THREADSTATUS_WAIT_SYNCH_ANY:
case THREADSTATUS_WAIT_MUTEX:
+ case THREADSTATUS_WAIT_ARB:
return QColor(Qt::GlobalColor::red);
case THREADSTATUS_DORMANT:
return QColor(Qt::GlobalColor::darkCyan);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 23:57:45 +0100