Support for patch types:

- float
 - double
 - string
 - u16string
 - byte_array

Plus some smaller changes

src/xenia/base/string_util.h

@@ -111,6 +111,32 @@ inline size_t copy_and_swap_maybe_truncating(char16_t* dest,
   return chars_copied;
 }
 
+inline bool hex_string_to_array(std::vector<uint8_t>& output_array,
+                                const std::string_view value) {
+  output_array.reserve((value.size() + 1) / 2);
+
+  size_t remaining_length = value.size();
+  while (remaining_length > 0) {
+    uint8_t chars_to_read = remaining_length > 1 ? 2 : 1;
+    const char* substring_pointer =
+        value.data() + value.size() - remaining_length;
+
+    uint8_t string_value = 0;
+    std::from_chars_result result = std::from_chars(
+        substring_pointer, substring_pointer + chars_to_read, string_value, 16);
+
+    if (result.ec != std::errc() ||
+        result.ptr != substring_pointer + chars_to_read) {
+      output_array.clear();
+      return false;
+    }
+
+    output_array.push_back(string_value);
+    remaining_length -= chars_to_read;
+  }
+  return true;
+}
+
 inline std::string to_hex_string(uint32_t value) {
   return fmt::format("{:08X}", value);
 }

src/xenia/kernel/user_module.cc

@@ -141,7 +141,7 @@ X_STATUS UserModule::LoadFromFile(const std::string_view path) {
     }
   }
 
-  XELOGI("Module hash: {:16X} for {}", hash_, name_);
+  XELOGI("Module hash: {:016X} for {}", hash_, name_);
   return LoadXexContinue();
 }
 

src/xenia/patcher/patch_db.cc

@@ -36,7 +36,7 @@ void PatchDB::LoadPatches() {
   const std::vector<xe::filesystem::FileInfo>& patch_files =
       filesystem::ListFiles(patches_directory);
   const std::regex file_name_regex_match =
-      std::regex("^[A-Fa-f0-9]{8}.*\\.patch$");
+      std::regex("^[A-Fa-f0-9]{8}.*\\.patch\\.toml$");
 
   for (const xe::filesystem::FileInfo& patch_file : patch_files) {
     // Skip files that doesn't have only title_id as name and .patch as
@@ -93,11 +93,13 @@ PatchFileEntry PatchDB::ReadPatchFile(const std::filesystem::path& file_path) {
     patch.is_enabled = is_enabled;
 
     // Iterate through all available data sizes
-    for (const auto& type : patch_data_types_size) {
-      auto patch_entries = ReadPatchData(type.first, patch_table_entry);
+    for (const auto& patch_data_type : patch_data_types_size) {
+      bool success =
+          ReadPatchData(patch.patch_data, patch_data_type, patch_table_entry);
 
-      for (const PatchDataEntry& patch_entry : *patch_entries) {
-        patch.patch_data.push_back(patch_entry);
+      if (!success) {
+        XELOGE("PatchDB: Cannot read patch {}", patch_name);
+        break;
       }
     }
     patchFile.patch_info.push_back(patch);
@@ -105,32 +107,64 @@ PatchFileEntry PatchDB::ReadPatchFile(const std::filesystem::path& file_path) {
   return patchFile;
 }
 
-std::vector<PatchDataEntry>* PatchDB::ReadPatchData(
-    const std::string size_type,
+bool PatchDB::ReadPatchData(
+    std::vector<PatchDataEntry>& patch_data,
+    const std::pair<std::string, PatchData> data_type,
     const std::shared_ptr<cpptoml::table>& patch_table) {
-  std::vector<PatchDataEntry>* patch_data = new std::vector<PatchDataEntry>();
-  auto patch_data_tarr = patch_table->get_table_array(size_type);
-
+  auto patch_data_tarr = patch_table->get_table_array(data_type.first);
   if (!patch_data_tarr) {
-    return patch_data;
+    return true;
   }
 
   for (const auto& patch_data_table : *patch_data_tarr) {
     uint32_t address = *patch_data_table->get_as<std::uint32_t>("address");
-    uint64_t value = *patch_data_table->get_as<std::uint64_t>("value");
+    size_t alloc_size = (size_t)data_type.second.size;
 
-    if (size_type == "f32") {
-      float fvalue = float(*patch_data_table->get_as<double>("value"));
-      value = *(reinterpret_cast<uint32_t*>(&fvalue));
-    } else if (size_type == "f64") {
-      double dvalue = *patch_data_table->get_as<double>("value");
-      value = *(reinterpret_cast<uint64_t*>(&dvalue));
+    switch (data_type.second.type) {
+      case PatchDataType::f64: {
+        double val = *patch_data_table->get_as<double>("value");
+        uint64_t value = *reinterpret_cast<uint64_t*>(&val);
+        patch_data.push_back({address, PatchDataValue(alloc_size, value)});
+        break;
+      }
+      case PatchDataType::f32: {
+        float value = float(*patch_data_table->get_as<double>("value"));
+        patch_data.push_back({address, PatchDataValue(alloc_size, value)});
+        break;
+      }
+      case PatchDataType::string: {
+        std::string value = *patch_data_table->get_as<std::string>("value");
+        patch_data.push_back({address, PatchDataValue(value)});
+        break;
+      }
+      case PatchDataType::u16string: {
+        std::u16string value =
+            xe::to_utf16(*patch_data_table->get_as<std::string>("value"));
+        patch_data.push_back({address, PatchDataValue(value)});
+        break;
+      }
+      case PatchDataType::byte_array: {
+        std::vector<uint8_t> data;
+        const std::string value =
+            *patch_data_table->get_as<std::string>("value");
+
+        bool success = string_util::hex_string_to_array(data, value);
+        if (!success) {
+          XELOGE("PatchDB: Cannot load patch due to invalid data!");
+          return false;
+        }
+
+        patch_data.push_back({address, PatchDataValue(value.size() / 2, data)});
+        break;
+      }
+      default: {
+        uint64_t value = *patch_data_table->get_as<uint64_t>("value");
+        patch_data.push_back({address, PatchDataValue(alloc_size, value)});
+        break;
+      }
     }
-
-    PatchDataEntry patchData = {GetAllocSize(size_type), address, value};
-    patch_data->push_back(patchData);
   }
-  return patch_data;
+  return true;
 }
 
 std::vector<PatchFileEntry> PatchDB::GetTitlePatches(uint32_t title_id,
@@ -147,18 +181,5 @@ std::vector<PatchFileEntry> PatchDB::GetTitlePatches(uint32_t title_id,
   return title_patches;
 }
 
-uint8_t PatchDB::GetAllocSize(const std::string provided_size) {
-  uint8_t alloc_size = 0;
-
-  auto itr = patch_data_types_size.find(provided_size);
-  if (itr == patch_data_types_size.cend()) {
-    XELOGW("PatchDB: Unsupported patch type!");
-    return alloc_size;
-  }
-
-  alloc_size = uint8_t(itr->second);
-  return alloc_size;
-}
-
 }  // namespace patcher
 }  // namespace xe

src/xenia/patcher/patch_db.h

@@ -16,16 +16,46 @@
 
 namespace xe {
 namespace patcher {
-struct PatchDataEntry {
-  const uint8_t alloc_size_;
-  const uint32_t memory_address_;
-  const uint64_t new_value_;
 
-  PatchDataEntry(const uint8_t alloc_size, const uint32_t memory_address,
-                 const uint64_t new_value)
-      : alloc_size_(alloc_size),
-        memory_address_(memory_address),
-        new_value_(new_value){};
+struct PatchDataValue {
+  const size_t alloc_size_;
+  const uint8_t* patch_data_ptr_;
+
+  PatchDataValue(const size_t alloc_size, const uint64_t value)
+      : alloc_size_(alloc_size) {
+    patch_data_ptr_ = new uint8_t[alloc_size_];
+    memcpy((void*)patch_data_ptr_, &value, alloc_size);
+  };
+
+  PatchDataValue(const size_t alloc_size, const float value)
+      : alloc_size_(alloc_size) {
+    patch_data_ptr_ = new uint8_t[alloc_size_];
+    memcpy((void*)patch_data_ptr_, &value, alloc_size);
+  };
+
+  PatchDataValue(const size_t alloc_size, const std::vector<uint8_t> value)
+      : alloc_size_(alloc_size) {
+    patch_data_ptr_ = new uint8_t[alloc_size_];
+    memcpy((void*)patch_data_ptr_, value.data(), alloc_size);
+  };
+
+  PatchDataValue(const std::string value) : alloc_size_(value.size()) {
+    patch_data_ptr_ = new uint8_t[alloc_size_];
+    memcpy((void*)patch_data_ptr_, value.c_str(), alloc_size_);
+  };
+
+  PatchDataValue(const std::u16string value) : alloc_size_(value.size() * 2) {
+    patch_data_ptr_ = new uint8_t[alloc_size_];
+    memcpy((void*)patch_data_ptr_, value.c_str(), alloc_size_);
+  };
+};
+
+struct PatchDataEntry {
+  const uint32_t memory_address_;
+  const PatchDataValue new_data_;
+
+  PatchDataEntry(const uint32_t memory_address, const PatchDataValue new_data)
+      : memory_address_(memory_address), new_data_(new_data){};
 };
 
 struct PatchInfoEntry {
@@ -44,6 +74,25 @@ struct PatchFileEntry {
   std::vector<PatchInfoEntry> patch_info;
 };
 
+enum class PatchDataType {
+  be8,
+  be16,
+  be32,
+  be64,
+  f32,
+  f64,
+  string,
+  u16string,
+  byte_array
+};
+
+struct PatchData {
+  uint8_t size;
+  PatchDataType type;
+
+  PatchData(uint8_t size_, PatchDataType type_) : size(size_), type(type_){};
+};
+
 class PatchDB {
  public:
   PatchDB(const std::filesystem::path patches_root);
@@ -52,9 +101,9 @@ class PatchDB {
   void LoadPatches();
 
   PatchFileEntry ReadPatchFile(const std::filesystem::path& file_path);
-  std::vector<PatchDataEntry>* ReadPatchData(
-      const std::string size_type,
-      const std::shared_ptr<cpptoml::table>& patch_table);
+  bool ReadPatchData(std::vector<PatchDataEntry>& patch_data,
+                     const std::pair<std::string, PatchData> data_type,
+                     const std::shared_ptr<cpptoml::table>& patch_table);
 
   std::vector<PatchFileEntry> GetTitlePatches(uint32_t title_id,
                                               const uint64_t hash);
@@ -64,12 +113,16 @@ class PatchDB {
   std::vector<PatchFileEntry> loaded_patches;
   std::filesystem::path patches_root_;
 
-  uint8_t GetAllocSize(const std::string provided_size);
-
-  const std::map<std::string, size_t> patch_data_types_size = {
-      {"f64", sizeof(uint64_t)},  {"f32", sizeof(uint32_t)},
-      {"be64", sizeof(uint64_t)}, {"be32", sizeof(uint32_t)},
-      {"be16", sizeof(uint16_t)}, {"be8", sizeof(uint8_t)}};
+  const std::map<std::string, PatchData> patch_data_types_size = {
+      {"string", PatchData(0, PatchDataType::string)},
+      {"u16string", PatchData(0, PatchDataType::u16string)},
+      {"array", PatchData(0, PatchDataType::byte_array)},
+      {"f64", PatchData(sizeof(uint64_t), PatchDataType::f64)},
+      {"f32", PatchData(sizeof(uint32_t), PatchDataType::f32)},
+      {"be64", PatchData(sizeof(uint64_t), PatchDataType::be64)},
+      {"be32", PatchData(sizeof(uint32_t), PatchDataType::be32)},
+      {"be16", PatchData(sizeof(uint16_t), PatchDataType::be16)},
+      {"be8", PatchData(sizeof(uint8_t), PatchDataType::be8)}};
 };
 
 }  // namespace patcher

src/xenia/patcher/patcher.cc

@@ -48,30 +48,17 @@ void Patcher::ApplyPatch(Memory* memory, const PatchInfoEntry* patch) {
     heap->QueryProtect(patch_data_entry.memory_address_, &old_address_protect);
 
     heap->Protect(patch_data_entry.memory_address_,
-                  patch_data_entry.alloc_size_,
+                  (uint32_t)patch_data_entry.new_data_.alloc_size_,
                   kMemoryProtectRead | kMemoryProtectWrite);
 
-    switch (patch_data_entry.alloc_size_) {
-      case 1:
-        xe::store_and_swap(address, uint8_t(patch_data_entry.new_value_));
-        break;
-      case 2:
-        xe::store_and_swap(address, uint16_t(patch_data_entry.new_value_));
-        break;
-      case 4:
-        xe::store_and_swap(address, uint32_t(patch_data_entry.new_value_));
-        break;
-      case 8:
-        xe::store_and_swap(address, uint64_t(patch_data_entry.new_value_));
-        break;
-      default:
-        XELOGE("Patcher: Unsupported patch allocation size - {}",
-               patch_data_entry.alloc_size_);
-        break;
-    }
+    xe::copy_and_swap(address,
+                      (uint8_t*)patch_data_entry.new_data_.patch_data_ptr_,
+                      patch_data_entry.new_data_.alloc_size_);
+
     // Restore previous protection
     heap->Protect(patch_data_entry.memory_address_,
-                  patch_data_entry.alloc_size_, old_address_protect);
+                  (uint32_t)patch_data_entry.new_data_.alloc_size_,
+                  old_address_protect);
 
     is_any_patch_applied_ = true;
   }