Shuffling kernel util types to util/.

src/xenia/kernel/util/native_list.cc

@@ -0,0 +1,72 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include "xenia/kernel/util/native_list.h"
+
+namespace xe {
+namespace kernel {
+namespace util {
+
+NativeList::NativeList(Memory* memory)
+    : memory_(memory), head_(kInvalidPointer) {}
+
+void NativeList::Insert(uint32_t ptr) {
+  xe::store_and_swap<uint32_t>(memory_->TranslateVirtual(ptr + 0), head_);
+  xe::store_and_swap<uint32_t>(memory_->TranslateVirtual(ptr + 4), 0);
+  if (head_) {
+    xe::store_and_swap<uint32_t>(memory_->TranslateVirtual(head_ + 4), ptr);
+  }
+  head_ = ptr;
+}
+
+bool NativeList::IsQueued(uint32_t ptr) {
+  uint32_t flink =
+      xe::load_and_swap<uint32_t>(memory_->TranslateVirtual(ptr + 0));
+  uint32_t blink =
+      xe::load_and_swap<uint32_t>(memory_->TranslateVirtual(ptr + 4));
+  return head_ == ptr || flink || blink;
+}
+
+void NativeList::Remove(uint32_t ptr) {
+  uint32_t flink =
+      xe::load_and_swap<uint32_t>(memory_->TranslateVirtual(ptr + 0));
+  uint32_t blink =
+      xe::load_and_swap<uint32_t>(memory_->TranslateVirtual(ptr + 4));
+  if (ptr == head_) {
+    head_ = flink;
+    if (flink) {
+      xe::store_and_swap<uint32_t>(memory_->TranslateVirtual(flink + 4), 0);
+    }
+  } else {
+    if (blink) {
+      xe::store_and_swap<uint32_t>(memory_->TranslateVirtual(blink + 0), flink);
+    }
+    if (flink) {
+      xe::store_and_swap<uint32_t>(memory_->TranslateVirtual(flink + 4), blink);
+    }
+  }
+  xe::store_and_swap<uint32_t>(memory_->TranslateVirtual(ptr + 0), 0);
+  xe::store_and_swap<uint32_t>(memory_->TranslateVirtual(ptr + 4), 0);
+}
+
+uint32_t NativeList::Shift() {
+  if (!head_) {
+    return 0;
+  }
+
+  uint32_t ptr = head_;
+  Remove(ptr);
+  return ptr;
+}
+
+bool NativeList::HasPending() { return head_ != kInvalidPointer; }
+
+}  // namespace util
+}  // namespace kernel
+}  // namespace xe