Proper misalignment for AllocatePool, add guest object table

src/xenia/kernel/util/guest_object_table.h

@@ -0,0 +1,52 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2023 Xenia Canary. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_KERNEL_UTIL_GUEST_OBJECT_TABLE_H_
+#define XENIA_KERNEL_UTIL_GUEST_OBJECT_TABLE_H_
+
+#include "xenia/kernel/kernel_state.h"
+#include "xenia/xbox.h"
+namespace xe {
+namespace kernel {
+namespace util {
+// use this to make it clearer in the code whether a uint32_t is a handle or not
+using guest_handle_t = uint32_t;
+// not normally api visible, but used so we can accurately recreate how the 360
+// os allocated handles
+struct X_HANDLE_TABLE {
+  xe::be<uint32_t> num_handles;
+  xe::be<guest_handle_t> free_offset;
+  xe::be<uint32_t> highest_allocated_offset;
+  xe::be<uint32_t> table_dynamic_buckets;
+  xe::be<uint32_t> table_static_buckets[8];
+  X_KSPINLOCK table_lock;
+  //used as unknown arg 3 to pool allocations
+  uint8_t unk_pool_arg_34;
+  uint8_t handle_high_byte;
+  uint8_t unk_36;
+  uint8_t unk_38;
+};
+
+static_assert_size(X_HANDLE_TABLE, 0x38);
+
+bool GrowHandleTable(uint32_t table_ptr, cpu::ppc::PPCContext* context);
+uint32_t NewObjectHandle(uint32_t table_guest, uint32_t object_guest,
+                         cpu::ppc::PPCContext* context);
+uint32_t DestroyObjectHandle(uint32_t table_guest, guest_handle_t handle,
+                             cpu::ppc::PPCContext* context);
+uint32_t LookupHandleUnlocked(X_HANDLE_TABLE* table, guest_handle_t handle,
+                              bool reference_object,
+                              cpu::ppc::PPCContext* context);
+uint32_t LookupHandle(uint32_t table, guest_handle_t handle,
+                      uint32_t reference_object, cpu::ppc::PPCContext* context);
+}  // namespace util
+}  // namespace kernel
+}  // namespace xe
+
+#endif  // XENIA_KERNEL_UTIL_GUEST_OBJECT_TABLE_H_