Use a 64-bit bitmap rather than a 32-bit bitmap.

src/xenia/base/bit_map.cc

@@ -19,18 +19,18 @@ BitMap::BitMap() = default;
 
 BitMap::BitMap(size_t size_bits) { Resize(size_bits); }
 
-BitMap::BitMap(uint32_t* data, size_t size_bits) {
-  assert_true(size_bits % 32 == 0);
+BitMap::BitMap(uint64_t* data, size_t size_bits) {
+  assert_true(size_bits % kDataSizeBits == 0);
 
-  data_.resize(size_bits / 32);
-  std::memcpy(data_.data(), data, size_bits / 32);
+  data_.resize(size_bits / kDataSizeBits);
+  std::memcpy(data_.data(), data, size_bits / kDataSizeBits);
 }
 
 size_t BitMap::Acquire() {
   for (size_t i = 0; i < data_.size(); i++) {
-    uint32_t entry = 0;
-    uint32_t new_entry = 0;
-    int acquired_idx = -1;
+    uint64_t entry = 0;
+    uint64_t new_entry = 0;
+    int64_t acquired_idx = -1;
 
     do {
       entry = data_[i];
@@ -42,7 +42,7 @@ size_t BitMap::Acquire() {
       }
 
       // Entry has a free bit. Acquire it.
-      uint32_t bit = 1 << (kDataSizeBits - index - 1);
+      uint64_t bit = 1ull << (kDataSizeBits - index - 1);
       new_entry = entry & ~bit;
       assert_not_zero(entry & bit);
 
@@ -62,10 +62,10 @@ void BitMap::Release(size_t index) {
   auto slot = index / kDataSizeBits;
   index -= slot * kDataSizeBits;
 
-  uint32_t bit = 1 << (kDataSizeBits - index - 1);
+  uint64_t bit = 1ull << (kDataSizeBits - index - 1);
 
-  uint32_t entry = 0;
-  uint32_t new_entry = 0;
+  uint64_t entry = 0;
+  uint64_t new_entry = 0;
   do {
     entry = data_[slot];
     assert_zero(entry & bit);
@@ -76,8 +76,8 @@ void BitMap::Release(size_t index) {
 
 void BitMap::Resize(size_t new_size_bits) {
   auto old_size = data_.size();
-  assert_true(new_size_bits % 32 == 0);
-  data_.resize(new_size_bits / 32);
+  assert_true(new_size_bits % kDataSizeBits == 0);
+  data_.resize(new_size_bits / kDataSizeBits);
 
   // Initialize new entries.
   if (data_.size() > old_size) {

src/xenia/base/bit_map.h

@@ -20,13 +20,13 @@ class BitMap {
  public:
   BitMap();
 
-  // Size is the number of entries, must be a multiple of 32.
+  // Size is the number of entries, must be a multiple of 64.
   BitMap(size_t size_bits);
 
   // Data does not have to be aligned to a 4-byte boundary, but it is
   // preferable.
-  // Size is the number of entries, must be a multiple of 32.
-  BitMap(uint32_t* data, size_t size_bits);
+  // Size is the number of entries, must be a multiple of 64.
+  BitMap(uint64_t* data, size_t size_bits);
 
   // (threadsafe) Acquires an entry and returns its index. Returns -1 if there
   // are no more free entries.
@@ -35,19 +35,19 @@ class BitMap {
   // (threadsafe) Releases an entry by an index.
   void Release(size_t index);
 
-  // Resize the bitmap. Size is the number of entries, must be a multiple of 32.
+  // Resize the bitmap. Size is the number of entries, must be a multiple of 64.
   void Resize(size_t new_size_bits);
 
   // Sets all entries to free.
   void Reset();
 
-  const std::vector<uint32_t> data() const { return data_; }
-  std::vector<uint32_t>& data() { return data_; }
+  const std::vector<uint64_t> data() const { return data_; }
+  std::vector<uint64_t>& data() { return data_; }
 
  private:
-  const static uint32_t kDataSize = 4;
-  const static uint32_t kDataSizeBits = kDataSize * 8;
-  std::vector<uint32_t> data_;
+  const static size_t kDataSize = 8;
+  const static size_t kDataSizeBits = kDataSize * 8;
+  std::vector<uint64_t> data_;
 };
 
 }  // namespace xe

src/xenia/kernel/kernel_state.cc

@@ -652,7 +652,7 @@ bool KernelState::Save(ByteStream* stream) {
   auto tls_bitmap = tls_bitmap_.data();
   stream->Write(uint32_t(tls_bitmap.size()));
   for (size_t i = 0; i < tls_bitmap.size(); i++) {
-    stream->Write<uint32_t>(tls_bitmap[i]);
+    stream->Write<uint64_t>(tls_bitmap[i]);
   }
 
   // We save XThreads absolutely first, as they will execute code upon save
@@ -699,6 +699,7 @@ bool KernelState::Save(ByteStream* stream) {
     stream->Write<uint32_t>(object->type());
     if (!object->Save(stream)) {
       XELOGD("Did not save object of type %d", object->type());
+      assert_always();
 
       // Revert backwards and overwrite if a save failed.
       stream->set_offset(prev_offset);
@@ -724,7 +725,7 @@ bool KernelState::Restore(ByteStream* stream) {
   auto& tls_bitmap = tls_bitmap_.data();
   tls_bitmap.resize(num_bitmap_entries);
   for (uint32_t i = 0; i < num_bitmap_entries; i++) {
-    tls_bitmap[i] = stream->Read<uint32_t>();
+    tls_bitmap[i] = stream->Read<uint64_t>();
   }
 
   uint32_t num_threads = stream->Read<uint32_t>();