early-access version 2527

README.md

@@ -1,7 +1,7 @@
 yuzu emulator early access
 =============
 
-This is the source code for early-access 2526.
+This is the source code for early-access 2527.
 
 ## Legal Notice
 

src/common/host_memory.cpp

@@ -327,8 +327,8 @@ private:
     bool IsNiechePlaceholder(size_t virtual_offset, size_t length) const {
         const auto it = placeholders.upper_bound({virtual_offset, virtual_offset + length});
         if (it != placeholders.end() && it->lower() == virtual_offset + length) {
-            const bool is_root = it == placeholders.begin() && virtual_offset == 0;
+            return it == placeholders.begin() ? virtual_offset == 0
-            return is_root || std::prev(it)->upper() == virtual_offset;
+                                              : std::prev(it)->upper() == virtual_offset;
         }
         return false;
     }

src/common/logging/backend.cpp

@@ -218,19 +218,17 @@ private:
     Impl(const std::filesystem::path& file_backend_filename, const Filter& filter_)
         : filter{filter_}, file_backend{file_backend_filename} {}
 
-    ~Impl() {
+    ~Impl() = default;
-        StopBackendThread();
-    }
 
     void StartBackendThread() {
-        backend_thread = std::thread([this] {
+        backend_thread = std::jthread([this](std::stop_token stop_token) {
             Common::SetCurrentThreadName("yuzu:Log");
             Entry entry;
             const auto write_logs = [this, &entry]() {
                 ForEachBackend([&entry](Backend& backend) { backend.Write(entry); });
             };
-            while (!stop.stop_requested()) {
+            while (!stop_token.stop_requested()) {
-                entry = message_queue.PopWait(stop.get_token());
+                entry = message_queue.PopWait(stop_token);
                 if (entry.filename != nullptr) {
                     write_logs();
                 }
@@ -244,11 +242,6 @@ private:
         });
     }
 
-    void StopBackendThread() {
-        stop.request_stop();
-        backend_thread.join();
-    }
-
     Entry CreateEntry(Class log_class, Level log_level, const char* filename, unsigned int line_nr,
                       const char* function, std::string&& message) const {
         using std::chrono::duration_cast;
@@ -283,8 +276,7 @@ private:
     ColorConsoleBackend color_console_backend{};
     FileBackend file_backend;
 
-    std::stop_source stop;
+    std::jthread backend_thread;
-    std::thread backend_thread;
     MPSCQueue<Entry, true> message_queue{};
     std::chrono::steady_clock::time_point time_origin{std::chrono::steady_clock::now()};
 };

src/core/hle/kernel/k_page_table.cpp

@@ -285,39 +285,64 @@ ResultCode KPageTable::MapProcessCode(VAddr addr, std::size_t num_pages, KMemory
     return ResultSuccess;
 }
 
-ResultCode KPageTable::MapCodeMemory(VAddr dst_addr, VAddr src_addr, std::size_t size) {
+ResultCode KPageTable::MapCodeMemory(VAddr dst_address, VAddr src_address, std::size_t size) {
+    // Validate the mapping request.
+    R_UNLESS(this->CanContain(dst_address, size, KMemoryState::AliasCode),
+             ResultInvalidMemoryRegion);
+
+    // Lock the table.
     KScopedLightLock lk(general_lock);
 
-    const std::size_t num_pages{size / PageSize};
+    // Verify that the source memory is normal heap.
-
+    KMemoryState src_state{};
-    KMemoryState state{};
+    KMemoryPermission src_perm{};
-    KMemoryPermission perm{};
+    std::size_t num_src_allocator_blocks{};
-    CASCADE_CODE(CheckMemoryState(&state, &perm, nullptr, nullptr, src_addr, size,
+    R_TRY(this->CheckMemoryState(std::addressof(src_state), std::addressof(src_perm), nullptr,
+                                 std::addressof(num_src_allocator_blocks), src_address, size,
                                  KMemoryState::All, KMemoryState::Normal, KMemoryPermission::All,
-                                  KMemoryPermission::UserReadWrite, KMemoryAttribute::Mask,
+                                 KMemoryPermission::UserReadWrite, KMemoryAttribute::All,
-                                  KMemoryAttribute::None, KMemoryAttribute::IpcAndDeviceMapped));
+                                 KMemoryAttribute::None));
 
-    if (IsRegionMapped(dst_addr, size)) {
+    // Verify that the destination memory is unmapped.
-        return ResultInvalidCurrentMemory;
+    std::size_t num_dst_allocator_blocks{};
-    }
+    R_TRY(this->CheckMemoryState(std::addressof(num_dst_allocator_blocks), dst_address, size,
-
+                                 KMemoryState::All, KMemoryState::Free, KMemoryPermission::None,
-    KPageLinkedList page_linked_list;
+                                 KMemoryPermission::None, KMemoryAttribute::None,
-    AddRegionToPages(src_addr, num_pages, page_linked_list);
+                                 KMemoryAttribute::None));
 
+    // Map the code memory.
     {
-        auto block_guard = detail::ScopeExit(
+        // Determine the number of pages being operated on.
-            [&] { Operate(src_addr, num_pages, perm, OperationType::ChangePermissions); });
+        const std::size_t num_pages = size / PageSize;
 
-        CASCADE_CODE(Operate(src_addr, num_pages, KMemoryPermission::None,
+        // Create page groups for the memory being mapped.
-                             OperationType::ChangePermissions));
+        KPageLinkedList pg;
-        CASCADE_CODE(MapPages(dst_addr, page_linked_list, KMemoryPermission::None));
+        AddRegionToPages(src_address, num_pages, pg);
 
-        block_guard.Cancel();
+        // Reprotect the source as kernel-read/not mapped.
-    }
+        const KMemoryPermission new_perm = static_cast<KMemoryPermission>(
+            KMemoryPermission::KernelRead | KMemoryPermission::NotMapped);
+        R_TRY(Operate(src_address, num_pages, new_perm, OperationType::ChangePermissions));
 
-    block_manager->Update(src_addr, num_pages, state, KMemoryPermission::None,
+        // Ensure that we unprotect the source pages on failure.
+        auto unprot_guard = SCOPE_GUARD({
+            ASSERT(this->Operate(src_address, num_pages, src_perm, OperationType::ChangePermissions)
+                       .IsSuccess());
+        });
+
+        // Map the alias pages.
+        R_TRY(MapPages(dst_address, pg, new_perm));
+
+        // We successfully mapped the alias pages, so we don't need to unprotect the src pages on
+        // failure.
+        unprot_guard.Cancel();
+
+        // Apply the memory block updates.
+        block_manager->Update(src_address, num_pages, src_state, new_perm,
                               KMemoryAttribute::Locked);
-    block_manager->Update(dst_addr, num_pages, KMemoryState::AliasCode);
+        block_manager->Update(dst_address, num_pages, KMemoryState::AliasCode, new_perm,
+                              KMemoryAttribute::None);
+    }
 
     return ResultSuccess;
 }
@@ -330,12 +355,6 @@ ResultCode KPageTable::UnmapCodeMemory(VAddr dst_address, VAddr src_address, std
     // Lock the table.
     KScopedLightLock lk(general_lock);
 
-    if (!size) {
-        return ResultSuccess;
-    }
-
-    const std::size_t num_pages{size / PageSize};
-
     // Verify that the source memory is locked normal heap.
     std::size_t num_src_allocator_blocks{};
     R_TRY(this->CheckMemoryState(std::addressof(num_src_allocator_blocks), src_address, size,
@@ -384,9 +403,15 @@ ResultCode KPageTable::UnmapCodeMemory(VAddr dst_address, VAddr src_address, std
 
     // Unmap.
     {
-        // TODO(bunnei): We free the virtual address space, but do not nullptr the pointers in the
+        // Determine the number of pages being operated on.
-        // backing page table. This is a workaround because of an issue where CPU emulation may have
+        const std::size_t num_pages = size / PageSize;
-        // not quite finished running code when NROs are unloaded.
+
+        // Unmap the aliased copy of the pages.
+        R_TRY(Operate(dst_address, num_pages, KMemoryPermission::None, OperationType::Unmap));
+
+        // Try to set the permissions for the source pages back to what they should be.
+        R_TRY(Operate(src_address, num_pages, KMemoryPermission::UserReadWrite,
+                      OperationType::ChangePermissions));
 
         // Apply the memory block updates.
         block_manager->Update(dst_address, num_pages, KMemoryState::None);

src/core/hle/kernel/k_page_table.h

@@ -36,8 +36,8 @@ public:
                                     KMemoryManager::Pool pool);
     ResultCode MapProcessCode(VAddr addr, std::size_t pages_count, KMemoryState state,
                               KMemoryPermission perm);
-    ResultCode MapCodeMemory(VAddr dst_addr, VAddr src_addr, std::size_t size);
+    ResultCode MapCodeMemory(VAddr dst_address, VAddr src_address, std::size_t size);
-    ResultCode UnmapCodeMemory(VAddr dst_addr, VAddr src_addr, std::size_t size);
+    ResultCode UnmapCodeMemory(VAddr dst_address, VAddr src_address, std::size_t size);
     ResultCode UnmapProcessMemory(VAddr dst_addr, std::size_t size, KPageTable& src_page_table,
                                   VAddr src_addr);
     ResultCode MapPhysicalMemory(VAddr addr, std::size_t size);