3 files changed, 287 insertions, 0 deletions

diff --git a/contrib/SDL-3.2.8/src/thread/ps2/SDL_syssem.c b/contrib/SDL-3.2.8/src/thread/ps2/SDL_syssem.c
new file mode 100644
index 0000000..ccd09c0
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/thread/ps2/SDL_syssem.c
@@ -0,0 +1,122 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "SDL_internal.h"
+
+#ifdef SDL_THREAD_PS2
+
+// Semaphore functions for the PS2.
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <kernel_util.h>
+
+#include <kernel.h>
+
+struct SDL_Semaphore
+{
+    s32 semid;
+};
+
+// Create a semaphore
+SDL_Semaphore *SDL_CreateSemaphore(Uint32 initial_value)
+{
+    SDL_Semaphore *sem;
+    ee_sema_t sema;
+
+    sem = (SDL_Semaphore *)SDL_malloc(sizeof(*sem));
+    if (sem) {
+        // TODO: Figure out the limit on the maximum value.
+        sema.init_count = initial_value;
+        sema.max_count = 255;
+        sema.option = 0;
+        sem->semid = CreateSema(&sema);
+
+        if (sem->semid < 0) {
+            SDL_SetError("Couldn't create semaphore");
+            SDL_free(sem);
+            sem = NULL;
+        }
+    }
+
+    return sem;
+}
+
+// Free the semaphore
+void SDL_DestroySemaphore(SDL_Semaphore *sem)
+{
+    if (sem) {
+        if (sem->semid > 0) {
+            DeleteSema(sem->semid);
+            sem->semid = 0;
+        }
+
+        SDL_free(sem);
+    }
+}
+
+bool SDL_WaitSemaphoreTimeoutNS(SDL_Semaphore *sem, Sint64 timeoutNS)
+{
+    u64 timeout_usec;
+    u64 *timeout_ptr;
+
+    if (!sem) {
+        return true;
+    }
+
+    if (timeoutNS == 0) {
+        return (PollSema(sem->semid) == 0);
+    }
+
+    timeout_ptr = NULL;
+
+    if (timeoutNS != -1) {  // -1 == wait indefinitely.
+        timeout_usec = SDL_NS_TO_US(timeoutNS);
+        timeout_ptr = &timeout_usec;
+    }
+
+    return (WaitSemaEx(sem->semid, 1, timeout_ptr) == 0);
+}
+
+// Returns the current count of the semaphore
+Uint32 SDL_GetSemaphoreValue(SDL_Semaphore *sem)
+{
+    ee_sema_t info;
+
+    if (!sem) {
+        return 0;
+    }
+
+    if (ReferSemaStatus(sem->semid, &info) == 0) {
+        return info.count;
+    }
+    return 0;
+}
+
+void SDL_SignalSemaphore(SDL_Semaphore *sem)
+{
+    if (!sem) {
+        return;
+    }
+
+    SignalSema(sem->semid);
+}
+
+#endif // SDL_THREAD_PS2
diff --git a/contrib/SDL-3.2.8/src/thread/ps2/SDL_systhread.c b/contrib/SDL-3.2.8/src/thread/ps2/SDL_systhread.c
new file mode 100644
index 0000000..a13da42
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/thread/ps2/SDL_systhread.c
@@ -0,0 +1,143 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "SDL_internal.h"
+
+#ifdef SDL_THREAD_PS2
+
+// PS2 thread management routines for SDL
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "../SDL_systhread.h"
+#include "../SDL_thread_c.h"
+#include <kernel.h>
+
+static void FinishThread(SDL_Thread *thread)
+{
+    ee_thread_status_t info;
+    int res;
+
+    res = ReferThreadStatus(thread->handle, &info);
+    TerminateThread(thread->handle);
+    DeleteThread(thread->handle);
+    DeleteSema((int)thread->endfunc);
+
+    if (res > 0) {
+        SDL_free(info.stack);
+    }
+}
+
+static int childThread(void *arg)
+{
+    SDL_Thread *thread = (SDL_Thread *)arg;
+    int res = thread->userfunc(thread->userdata);
+    SignalSema((int)thread->endfunc);
+    return res;
+}
+
+bool SDL_SYS_CreateThread(SDL_Thread *thread,
+                          SDL_FunctionPointer pfnBeginThread,
+                          SDL_FunctionPointer pfnEndThread)
+{
+    ee_thread_status_t status;
+    ee_thread_t eethread;
+    ee_sema_t sema;
+    size_t stack_size;
+    int priority = 32;
+
+    // Set priority of new thread to the same as the current thread
+    // status.size = sizeof(ee_thread_t);
+    if (ReferThreadStatus(GetThreadId(), &status) == 0) {
+        priority = status.current_priority;
+    }
+
+    stack_size = thread->stacksize ? ((int)thread->stacksize) : 0x1800;
+
+    // Create EE Thread
+    eethread.attr = 0;
+    eethread.option = 0;
+    eethread.func = &childThread;
+    eethread.stack = SDL_malloc(stack_size);
+    eethread.stack_size = stack_size;
+    eethread.gp_reg = &_gp;
+    eethread.initial_priority = priority;
+    thread->handle = CreateThread(&eethread);
+
+    if (thread->handle < 0) {
+        return SDL_SetError("CreateThread() failed");
+    }
+
+    // Prepare el semaphore for the ending function
+    sema.init_count = 0;
+    sema.max_count = 1;
+    sema.option = 0;
+    thread->endfunc = (void *)CreateSema(&sema);
+
+    if (StartThread(thread->handle, thread) < 0) {
+        return SDL_SetError("StartThread() failed");
+    }
+    return true;
+}
+
+void SDL_SYS_SetupThread(const char *name)
+{
+    // Do nothing.
+}
+
+SDL_ThreadID SDL_GetCurrentThreadID(void)
+{
+    return (SDL_ThreadID)GetThreadId();
+}
+
+void SDL_SYS_WaitThread(SDL_Thread *thread)
+{
+    WaitSema((int)thread->endfunc);
+    ReleaseWaitThread(thread->handle);
+    FinishThread(thread);
+}
+
+void SDL_SYS_DetachThread(SDL_Thread *thread)
+{
+    // Do nothing.
+}
+
+bool SDL_SYS_SetThreadPriority(SDL_ThreadPriority priority)
+{
+    int value;
+
+    if (priority == SDL_THREAD_PRIORITY_LOW) {
+        value = 111;
+    } else if (priority == SDL_THREAD_PRIORITY_HIGH) {
+        value = 32;
+    } else if (priority == SDL_THREAD_PRIORITY_TIME_CRITICAL) {
+        value = 16;
+    } else {
+        value = 50;
+    }
+
+    if (ChangeThreadPriority(GetThreadId(), value) < 0) {
+        return SDL_SetError("ChangeThreadPriority() failed");
+    }
+    return true;
+}
+
+#endif // SDL_THREAD_PS2
diff --git a/contrib/SDL-3.2.8/src/thread/ps2/SDL_systhread_c.h b/contrib/SDL-3.2.8/src/thread/ps2/SDL_systhread_c.h
new file mode 100644
index 0000000..2a811ce
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/thread/ps2/SDL_systhread_c.h
@@ -0,0 +1,22 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+typedef int32_t SYS_ThreadHandle;