Initial commit

5 files changed, 376 insertions, 0 deletions

diff --git a/contrib/SDL-3.2.8/src/thread/psp/SDL_sysmutex.c b/contrib/SDL-3.2.8/src/thread/psp/SDL_sysmutex.c
new file mode 100644
index 0000000..c8ed80d
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/thread/psp/SDL_sysmutex.c
@@ -0,0 +1,100 @@
+/*
+  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_PSP
+
+// An implementation of mutexes using semaphores
+
+#include "SDL_systhread_c.h"
+
+#include <pspthreadman.h>
+#include <pspkerror.h>
+
+#define SCE_KERNEL_MUTEX_ATTR_RECURSIVE 0x0200U
+
+struct SDL_Mutex
+{
+    SceLwMutexWorkarea lock;
+};
+
+SDL_Mutex *SDL_CreateMutex(void)
+{
+    SDL_Mutex *mutex = (SDL_Mutex *)SDL_malloc(sizeof(*mutex));
+    if (mutex) {
+        const SceInt32 res = sceKernelCreateLwMutex(
+            &mutex->lock,
+            "SDL mutex",
+            SCE_KERNEL_MUTEX_ATTR_RECURSIVE,
+            0,
+            NULL);
+
+        if (res < 0) {
+            SDL_free(mutex);
+            mutex = NULL;
+            SDL_SetError("Error trying to create mutex: %lx", res);
+        }
+    }
+    return mutex;
+}
+
+void SDL_DestroyMutex(SDL_Mutex *mutex)
+{
+    if (mutex) {
+        sceKernelDeleteLwMutex(&mutex->lock);
+        SDL_free(mutex);
+    }
+}
+
+void SDL_LockMutex(SDL_Mutex *mutex) SDL_NO_THREAD_SAFETY_ANALYSIS  // clang doesn't know about NULL mutexes
+{
+    if (mutex) {
+        const SceInt32 res = sceKernelLockLwMutex(&mutex->lock, 1, NULL);
+        SDL_assert(res == SCE_KERNEL_ERROR_OK);  // assume we're in a lot of trouble if this assert fails.
+    }
+}
+
+bool SDL_TryLockMutex(SDL_Mutex *mutex)
+{
+    bool result = true;
+    if (mutex) {
+        const SceInt32 res = sceKernelTryLockLwMutex(&mutex->lock, 1);
+        if (res == SCE_KERNEL_ERROR_OK) {
+            result = true;
+        } else if (res == SCE_KERNEL_ERROR_WAIT_TIMEOUT) {
+            result = false;
+        } else {
+            SDL_assert(res == SCE_KERNEL_ERROR_OK);  // assume we're in a lot of trouble if this assert fails.
+            result = false;
+        }
+    }
+    return result;
+}
+
+void SDL_UnlockMutex(SDL_Mutex *mutex) SDL_NO_THREAD_SAFETY_ANALYSIS  // clang doesn't know about NULL mutexes
+{
+    if (mutex) {
+        const SceInt32 res = sceKernelUnlockLwMutex(&mutex->lock, 1);
+        SDL_assert(res == SCE_KERNEL_ERROR_OK);  // assume we're in a lot of trouble if this assert fails.
+    }
+}
+
+#endif // SDL_THREAD_PSP
diff --git a/contrib/SDL-3.2.8/src/thread/psp/SDL_sysmutex_c.h b/contrib/SDL-3.2.8/src/thread/psp/SDL_sysmutex_c.h
new file mode 100644
index 0000000..4b0c6f8
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/thread/psp/SDL_sysmutex_c.h
@@ -0,0 +1,21 @@
+/*
+  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"
diff --git a/contrib/SDL-3.2.8/src/thread/psp/SDL_syssem.c b/contrib/SDL-3.2.8/src/thread/psp/SDL_syssem.c
new file mode 100644
index 0000000..27e332f
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/thread/psp/SDL_syssem.c
@@ -0,0 +1,119 @@
+/*
+  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_PSP
+
+// Semaphore functions for the PSP.
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <pspthreadman.h>
+#include <pspkerror.h>
+
+struct SDL_Semaphore
+{
+    SceUID semid;
+};
+
+// Create a semaphore
+SDL_Semaphore *SDL_CreateSemaphore(Uint32 initial_value)
+{
+    SDL_Semaphore *sem;
+
+    sem = (SDL_Semaphore *)SDL_malloc(sizeof(*sem));
+    if (sem) {
+        // TODO: Figure out the limit on the maximum value.
+        sem->semid = sceKernelCreateSema("SDL sema", 0, initial_value, 255, NULL);
+        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) {
+            sceKernelDeleteSema(sem->semid);
+            sem->semid = 0;
+        }
+
+        SDL_free(sem);
+    }
+}
+
+/* TODO: This routine is a bit overloaded.
+ * If the timeout is 0 then just poll the semaphore; if it's -1, pass
+ * NULL to sceKernelWaitSema() so that it waits indefinitely; and if the timeout
+ * is specified, convert it to microseconds. */
+bool SDL_WaitSemaphoreTimeoutNS(SDL_Semaphore *sem, Sint64 timeoutNS)
+{
+        SceUInt timeoutUS;
+    SceUInt *pTimeout = NULL;
+
+    if (!sem) {
+        return true;
+    }
+
+    if (timeoutNS == 0) {
+        return (sceKernelPollSema(sem->semid, 1) == 0);
+    }
+
+    if (timeoutNS > 0) {
+        timeoutUS = (SceUInt)SDL_NS_TO_US(timeoutNS); // Convert to microseconds.
+        pTimeout = &timeoutUS;
+    }
+
+    return (sceKernelWaitSema(sem->semid, 1, pTimeout) == 0);
+}
+
+// Returns the current count of the semaphore
+Uint32 SDL_GetSemaphoreValue(SDL_Semaphore *sem)
+{
+    SceKernelSemaInfo info;
+
+    if (!sem) {
+        return 0;
+    }
+
+    if (sceKernelReferSemaStatus(sem->semid, &info) == 0) {
+        return info.currentCount;
+    }
+    return 0;
+}
+
+void SDL_SignalSemaphore(SDL_Semaphore *sem)
+{
+    if (!sem) {
+        return;
+    }
+
+    sceKernelSignalSema(sem->semid, 1);
+}
+
+#endif // SDL_THREAD_PSP
diff --git a/contrib/SDL-3.2.8/src/thread/psp/SDL_systhread.c b/contrib/SDL-3.2.8/src/thread/psp/SDL_systhread.c
new file mode 100644
index 0000000..3d60718
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/thread/psp/SDL_systhread.c
@@ -0,0 +1,112 @@
+/*
+  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_PSP
+
+// PSP thread management routines for SDL
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "../SDL_systhread.h"
+#include "../SDL_thread_c.h"
+#include <pspkerneltypes.h>
+#include <pspthreadman.h>
+
+static int ThreadEntry(SceSize args, void *argp)
+{
+    SDL_RunThread(*(SDL_Thread **)argp);
+    return 0;
+}
+
+bool SDL_SYS_CreateThread(SDL_Thread *thread,
+                          SDL_FunctionPointer pfnBeginThread,
+                          SDL_FunctionPointer pfnEndThread)
+{
+    SceKernelThreadInfo status;
+    int priority = 32;
+
+    // Set priority of new thread to the same as the current thread
+    status.size = sizeof(SceKernelThreadInfo);
+    if (sceKernelReferThreadStatus(sceKernelGetThreadId(), &status) == 0) {
+        priority = status.currentPriority;
+    }
+
+    thread->handle = sceKernelCreateThread(thread->name, ThreadEntry,
+                                           priority, thread->stacksize ? ((int)thread->stacksize) : 0x8000,
+                                           PSP_THREAD_ATTR_VFPU, NULL);
+    if (thread->handle < 0) {
+        return SDL_SetError("sceKernelCreateThread() failed");
+    }
+
+    sceKernelStartThread(thread->handle, 4, &thread);
+    return true;
+}
+
+void SDL_SYS_SetupThread(const char *name)
+{
+    // Do nothing.
+}
+
+SDL_ThreadID SDL_GetCurrentThreadID(void)
+{
+    return (SDL_ThreadID)sceKernelGetThreadId();
+}
+
+void SDL_SYS_WaitThread(SDL_Thread *thread)
+{
+    sceKernelWaitThreadEnd(thread->handle, NULL);
+    sceKernelDeleteThread(thread->handle);
+}
+
+void SDL_SYS_DetachThread(SDL_Thread *thread)
+{
+    // !!! FIXME: is this correct?
+    sceKernelDeleteThread(thread->handle);
+}
+
+void SDL_SYS_KillThread(SDL_Thread *thread)
+{
+    sceKernelTerminateDeleteThread(thread->handle);
+}
+
+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 (sceKernelChangeThreadPriority(sceKernelGetThreadId(), value) < 0) {
+        return SDL_SetError("sceKernelChangeThreadPriority() failed");
+    }
+    return true;
+}
+
+#endif // SDL_THREAD_PSP
diff --git a/contrib/SDL-3.2.8/src/thread/psp/SDL_systhread_c.h b/contrib/SDL-3.2.8/src/thread/psp/SDL_systhread_c.h
new file mode 100644
index 0000000..9e951ec
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/thread/psp/SDL_systhread_c.h
@@ -0,0 +1,24 @@
+/*
+  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 <pspkerneltypes.h>
+
+typedef SceUID SYS_ThreadHandle;