Merge pull request #26 from bunnei/romfs-archive

Adds preliminary RomFS archive support

4 files changed, 199 insertions, 0 deletions

diff --git a/src/core/hle/kernel/archive.cpp b/src/core/hle/kernel/archive.cpp
new file mode 100644
index 000000000..76b2520da
--- /dev/null
+++ b/src/core/hle/kernel/archive.cpp
@@ -0,0 +1,157 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include "common/common_types.h"
+
+#include "core/file_sys/archive.h"
+#include "core/hle/service/service.h"
+#include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/archive.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// Kernel namespace
+
+namespace Kernel {
+
+// Command to access archive file
+enum class FileCommand : u32 {
+    Dummy1          = 0x000100C6,
+    Control         = 0x040100C4,
+    OpenSubFile     = 0x08010100,
+    Read            = 0x080200C2,
+    Write           = 0x08030102,
+    GetSize         = 0x08040000,
+    SetSize         = 0x08050080,
+    GetAttributes   = 0x08060000,
+    SetAttributes   = 0x08070040,
+    Close           = 0x08080000,
+    Flush           = 0x08090000,
+};
+
+class Archive : public Object {
+public:
+    const char* GetTypeName() const { return "Archive"; }
+    const char* GetName() const { return name.c_str(); }
+
+    static Kernel::HandleType GetStaticHandleType() { return HandleType::Archive; }
+    Kernel::HandleType GetHandleType() const { return HandleType::Archive; }
+
+    std::string name;           ///< Name of archive (optional)
+    FileSys::Archive* backend;  ///< Archive backend interface
+
+    /**
+     * Synchronize kernel object 
+     * @param wait Boolean wait set if current thread should wait as a result of sync operation
+     * @return Result of operation, 0 on success, otherwise error code
+     */
+    Result SyncRequest(bool* wait) {
+        u32* cmd_buff = Service::GetCommandBuffer();
+        FileCommand cmd = static_cast<FileCommand>(cmd_buff[0]);
+        switch (cmd) {
+
+        // Read from archive...
+        case FileCommand::Read:
+        {
+            u64 offset = cmd_buff[1] | ((u64) cmd_buff[2]) << 32;
+            u32 length  = cmd_buff[3];
+            u32 address = cmd_buff[5];
+            cmd_buff[2] = backend->Read(offset, length, Memory::GetPointer(address));
+            break;
+        }
+
+        // Unknown command...
+        default:
+            ERROR_LOG(KERNEL, "Unknown command=0x%08X!", cmd);
+            return -1;
+        }
+        cmd_buff[1] = 0; // No error
+        return 0;
+    }
+
+    /**
+     * Wait for kernel object to synchronize
+     * @param wait Boolean wait set if current thread should wait as a result of sync operation
+     * @return Result of operation, 0 on success, otherwise error code
+     */
+    Result WaitSynchronization(bool* wait) {
+        // TODO(bunnei): ImplementMe
+        ERROR_LOG(OSHLE, "(UNIMPLEMENTED)");
+        return 0;
+    }
+};
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+std::map<FileSys::Archive::IdCode, Handle> g_archive_map; ///< Map of file archives by IdCode
+
+/**
+ * Opens an archive
+ * @param id_code IdCode of the archive to open
+ * @return Handle to archive if it exists, otherwise a null handle (0)
+ */
+Handle OpenArchive(FileSys::Archive::IdCode id_code) {
+    auto itr = g_archive_map.find(id_code);
+    if (itr == g_archive_map.end()) {
+        return 0;
+    }
+    return itr->second;
+}
+
+/**
+ * Mounts an archive
+ * @param archive Pointer to the archive to mount
+ * @return Result of operation, 0 on success, otherwise error code
+ */
+Result MountArchive(Archive* archive) {
+    FileSys::Archive::IdCode id_code = archive->backend->GetIdCode();
+    if (0 != OpenArchive(id_code)) {
+        ERROR_LOG(KERNEL, "Cannot mount two archives with the same ID code! (%d)", (int) id_code);
+        return -1;
+    }
+    g_archive_map[id_code] = archive->GetHandle();
+    INFO_LOG(KERNEL, "Mounted archive %s", archive->GetName());
+    return 0;
+}
+
+/**
+ * Creates an Archive
+ * @param handle Handle to newly created archive object
+ * @param backend File system backend interface to the archive
+ * @param name Optional name of Archive
+ * @return Newly created Archive object
+ */
+Archive* CreateArchive(Handle& handle, FileSys::Archive* backend, const std::string& name) {
+    Archive* archive = new Archive;
+    handle = Kernel::g_object_pool.Create(archive);
+    archive->name = name;
+    archive->backend = backend;
+
+    MountArchive(archive);
+    
+    return archive;
+}
+
+/**
+ * Creates an Archive
+ * @param backend File system backend interface to the archive
+ * @param name Optional name of Archive
+ * @return Handle to newly created Archive object
+ */
+Handle CreateArchive(FileSys::Archive* backend, const std::string& name) {
+    Handle handle;
+    Archive* archive = CreateArchive(handle, backend, name);
+    return handle;
+}
+
+/// Initialize archives
+void ArchiveInit() {
+    g_archive_map.clear();
+}
+
+/// Shutdown archives
+void ArchiveShutdown() {
+    g_archive_map.clear();
+}
+
+} // namespace Kernel
diff --git a/src/core/hle/kernel/archive.h b/src/core/hle/kernel/archive.h
new file mode 100644
index 000000000..3758e7061
--- /dev/null
+++ b/src/core/hle/kernel/archive.h
@@ -0,0 +1,38 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common_types.h"
+
+#include "core/hle/kernel/kernel.h"
+#include "core/file_sys/archive.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// Kernel namespace
+
+namespace Kernel {
+
+/**
+ * Opens an archive
+ * @param id_code IdCode of the archive to open
+ * @return Handle to archive if it exists, otherwise a null handle (0)
+ */
+Handle OpenArchive(FileSys::Archive::IdCode id_code);
+
+/**
+ * Creates an Archive
+ * @param backend File system backend interface to the archive
+ * @param name Optional name of Archive
+ * @return Handle to newly created Archive object
+ */
+Handle CreateArchive(FileSys::Archive* backend, const std::string& name);
+
+/// Initialize archives
+void ArchiveInit();
+
+/// Shutdown archives
+void ArchiveShutdown();
+
+} // namespace FileSys
diff --git a/src/core/hle/kernel/kernel.cpp b/src/core/hle/kernel/kernel.cpp
index cda183add..7d9bd261e 100644
--- a/src/core/hle/kernel/kernel.cpp
+++ b/src/core/hle/kernel/kernel.cpp
@@ -9,6 +9,7 @@
 #include "core/core.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/thread.h"
+#include "core/hle/kernel/archive.h"
 
 namespace Kernel {
 
@@ -133,11 +134,13 @@ Object* ObjectPool::CreateByIDType(int type) {
 /// Initialize the kernel
 void Init() {
     Kernel::ThreadingInit();
+    Kernel::ArchiveInit();
 }
 
 /// Shutdown the kernel
 void Shutdown() {
     Kernel::ThreadingShutdown();
+    Kernel::ArchiveShutdown();
 
     g_object_pool.Clear(); // Free all kernel objects
 }
diff --git a/src/core/hle/kernel/kernel.h b/src/core/hle/kernel/kernel.h
index 3f15da0ac..69f4ddd37 100644
--- a/src/core/hle/kernel/kernel.h
+++ b/src/core/hle/kernel/kernel.h
@@ -29,6 +29,7 @@ enum class HandleType : u32 {
     Arbiter         = 9,
     File            = 10,
     Semaphore       = 11,
+    Archive         = 12,
 };
     
 enum {