Merge pull request #9 from bunnei/master

Add initial kernel HLE, includes thread creation and context switching

1 files changed, 158 insertions, 0 deletions

diff --git a/src/core/hle/kernel/kernel.cpp b/src/core/hle/kernel/kernel.cpp
new file mode 100644
index 000000000..de80de893
--- /dev/null
+++ b/src/core/hle/kernel/kernel.cpp
@@ -0,0 +1,158 @@
+// Copyright 2014 Citra Emulator Project / PPSSPP Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.  
+
+#pragma once
+
+#include <string.h>
+
+#include "common/common.h"
+
+#include "core/core.h"
+#include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/thread.h"
+
+namespace Kernel {
+
+ObjectPool g_object_pool;
+
+ObjectPool::ObjectPool() {
+    memset(occupied, 0, sizeof(bool) * MAX_COUNT);
+    next_id = INITIAL_NEXT_ID;
+}
+
+Handle ObjectPool::Create(Object* obj, int range_bottom, int range_top) {
+    if (range_top > MAX_COUNT) {
+        range_top = MAX_COUNT;
+    }
+    if (next_id >= range_bottom && next_id < range_top) {
+        range_bottom = next_id++;
+    }
+    for (int i = range_bottom; i < range_top; i++) {
+        if (!occupied[i]) {
+            occupied[i] = true;
+            pool[i] = obj;
+            pool[i]->handle = i + HANDLE_OFFSET;
+            return i + HANDLE_OFFSET;
+        }
+    }
+    ERROR_LOG(HLE, "Unable to allocate kernel object, too many objects slots in use.");
+    return 0;
+}
+
+bool ObjectPool::IsValid(Handle handle) {
+    int index = handle - HANDLE_OFFSET;
+    if (index < 0)
+        return false;
+    if (index >= MAX_COUNT)
+        return false;
+
+    return occupied[index];
+}
+
+void ObjectPool::Clear() {
+    for (int i = 0; i < MAX_COUNT; i++) {
+        //brutally clear everything, no validation
+        if (occupied[i])
+            delete pool[i];
+        occupied[i] = false;
+    }
+    memset(pool, 0, sizeof(Object*)*MAX_COUNT);
+    next_id = INITIAL_NEXT_ID;
+}
+
+Object* &ObjectPool::operator [](Handle handle)
+{
+    _dbg_assert_msg_(KERNEL, IsValid(handle), "GRABBING UNALLOCED KERNEL OBJ");
+    return pool[handle - HANDLE_OFFSET];
+}
+
+void ObjectPool::List() {
+    for (int i = 0; i < MAX_COUNT; i++) {
+        if (occupied[i]) {
+            if (pool[i]) {
+                INFO_LOG(KERNEL, "KO %i: %s \"%s\"", i + HANDLE_OFFSET, pool[i]->GetTypeName(), 
+                    pool[i]->GetName());
+            }
+        }
+    }
+}
+
+int ObjectPool::GetCount() {
+    int count = 0;
+    for (int i = 0; i < MAX_COUNT; i++) {
+        if (occupied[i])
+            count++;
+    }
+    return count;
+}
+
+Object* ObjectPool::CreateByIDType(int type) {
+    // Used for save states.  This is ugly, but what other way is there?
+    switch (type) {
+    //case SCE_KERNEL_TMID_Alarm:
+    //    return __KernelAlarmObject();
+    //case SCE_KERNEL_TMID_EventFlag:
+    //    return __KernelEventFlagObject();
+    //case SCE_KERNEL_TMID_Mbox:
+    //    return __KernelMbxObject();
+    //case SCE_KERNEL_TMID_Fpl:
+    //    return __KernelMemoryFPLObject();
+    //case SCE_KERNEL_TMID_Vpl:
+    //    return __KernelMemoryVPLObject();
+    //case PPSSPP_KERNEL_TMID_PMB:
+    //    return __KernelMemoryPMBObject();
+    //case PPSSPP_KERNEL_TMID_Module:
+    //    return __KernelModuleObject();
+    //case SCE_KERNEL_TMID_Mpipe:
+    //    return __KernelMsgPipeObject();
+    //case SCE_KERNEL_TMID_Mutex:
+    //    return __KernelMutexObject();
+    //case SCE_KERNEL_TMID_LwMutex:
+    //    return __KernelLwMutexObject();
+    //case SCE_KERNEL_TMID_Semaphore:
+    //    return __KernelSemaphoreObject();
+    //case SCE_KERNEL_TMID_Callback:
+    //    return __KernelCallbackObject();
+    //case SCE_KERNEL_TMID_Thread:
+    //    return __KernelThreadObject();
+    //case SCE_KERNEL_TMID_VTimer:
+    //    return __KernelVTimerObject();
+    //case SCE_KERNEL_TMID_Tlspl:
+    //    return __KernelTlsplObject();
+    //case PPSSPP_KERNEL_TMID_File:
+    //    return __KernelFileNodeObject();
+    //case PPSSPP_KERNEL_TMID_DirList:
+    //    return __KernelDirListingObject();
+
+    default:
+        ERROR_LOG(COMMON, "Unable to load state: could not find object type %d.", type);
+        return NULL;
+    }
+}
+
+void Init() {
+    Kernel::ThreadingInit();
+}
+
+void Shutdown() {
+    Kernel::ThreadingShutdown();
+}
+
+/**
+ * Loads executable stored at specified address
+ * @entry_point Entry point in memory of loaded executable
+ * @return True on success, otherwise false
+ */
+bool LoadExec(u32 entry_point) {
+    Init();
+    
+    Core::g_app_core->SetPC(entry_point);
+
+    // 0x30 is the typical main thread priority I've seen used so far
+    Handle thread = Kernel::SetupMainThread(0x30);
+
+    return true;
+}
+
+} // namespace