Kernel: Introduce skeleton Process class to hold process data

src/core/CMakeLists.txt

@@ -29,6 +29,7 @@ set(SRCS
             hle/kernel/event.cpp
             hle/kernel/kernel.cpp
             hle/kernel/mutex.cpp
+            hle/kernel/process.cpp
             hle/kernel/semaphore.cpp
             hle/kernel/session.cpp
             hle/kernel/shared_memory.cpp
@@ -139,6 +140,7 @@ set(HEADERS
             hle/kernel/event.h
             hle/kernel/kernel.h
             hle/kernel/mutex.h
+            hle/kernel/process.h
             hle/kernel/semaphore.h
             hle/kernel/session.h
             hle/kernel/shared_memory.h

src/core/hle/kernel/kernel.cpp

@@ -10,6 +10,7 @@
 #include "core/arm/arm_interface.h"
 #include "core/core.h"
 #include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/process.h"
 #include "core/hle/kernel/thread.h"
 #include "core/hle/kernel/timer.h"
 
@@ -149,18 +150,7 @@ void Shutdown() {
     Kernel::ThreadingShutdown();
     Kernel::TimersShutdown();
     g_handle_table.Clear(); // Free all kernel objects
-}
-
-/**
- * Loads executable stored at specified address
- * @entry_point Entry point in memory of loaded executable
- * @return True on success, otherwise false
- */
-bool LoadExec(u32 entry_point) {
-    // 0x30 is the typical main thread priority I've seen used so far
-    g_main_thread = Kernel::SetupMainThread(Kernel::DEFAULT_STACK_SIZE, entry_point, THREADPRIO_DEFAULT);
-
-    return true;
+    g_current_process = nullptr;
 }
 
 } // namespace

src/core/hle/kernel/kernel.h

@@ -7,6 +7,7 @@
 #include <boost/intrusive_ptr.hpp>
 
 #include <array>
+#include <memory>
 #include <string>
 #include <vector>
 
@@ -15,6 +16,8 @@
 #include "core/hle/hle.h"
 #include "core/hle/result.h"
 
+struct ApplicationInfo;
+
 namespace Kernel {
 
 class Thread;
@@ -282,11 +285,4 @@ void Init();
 /// Shutdown the kernel
 void Shutdown();
 
-/**
- * Loads executable stored at specified address
- * @entry_point Entry point in memory of loaded executable
- * @return True on success, otherwise false
- */
-bool LoadExec(u32 entry_point);
-
 } // namespace

src/core/hle/kernel/process.cpp

@@ -0,0 +1,35 @@
+// Copyright 2015 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/assert.h"
+
+#include "core/hle/kernel/process.h"
+#include "core/hle/kernel/thread.h"
+
+namespace Kernel {
+
+SharedPtr<Process> Process::Create(std::string name, u64 program_id) {
+    SharedPtr<Process> process(new Process);
+
+    process->svc_access_mask.set();
+    process->name = std::move(name);
+    process->program_id = program_id;
+
+    return process;
+}
+
+void Process::ParseKernelCaps(const u32 * kernel_caps, size_t len) {
+    //UNIMPLEMENTED();
+}
+
+void Process::Run(VAddr entry_point, s32 main_thread_priority, u32 stack_size) {
+    g_main_thread = Kernel::SetupMainThread(stack_size, entry_point, main_thread_priority);
+}
+
+Kernel::Process::Process() {}
+Kernel::Process::~Process() {}
+
+SharedPtr<Process> g_current_process;
+
+}

src/core/hle/kernel/process.h

@@ -0,0 +1,61 @@
+// Copyright 2015 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <bitset>
+
+#include <boost/container/static_vector.hpp>
+
+#include "core/hle/kernel/kernel.h"
+#include "core/hle/result.h"
+
+namespace Kernel {
+
+struct StaticAddressMapping {
+    // Address and size must be 4K-aligned
+    VAddr address;
+    u32 size;
+    bool writable;
+};
+
+enum class MemoryRegion {
+    APPLICATION = 1,
+    SYSTEM = 2,
+    BASE = 3,
+};
+
+class Process final : public Object {
+public:
+    static SharedPtr<Process> Create(std::string name, u64 program_id);
+
+    std::string GetTypeName() const override { return "Process"; }
+    std::string GetName() const override { return name; }
+
+    static const HandleType HANDLE_TYPE = HandleType::Process;
+    HandleType GetHandleType() const override { return HANDLE_TYPE; }
+
+    std::string name; ///< Name of the process
+    u64 program_id;
+
+    std::bitset<0x80> svc_access_mask;
+    unsigned int handle_table_size = 0x200;
+    boost::container::static_vector<StaticAddressMapping, 8> static_address_mappings; // TODO: Determine a good upper limit
+
+    bool loaded_high = false; // Application loaded high (not at 0x00100000)
+    bool shared_page_writable = false;
+    bool privileged_priority = false; // Can use priority levels higher than 24
+    MemoryRegion memory_region = MemoryRegion::APPLICATION;
+
+    void ParseKernelCaps(const u32* kernel_caps, size_t len);
+    void Run(VAddr entry_point, s32 main_thread_priority, u32 stack_size);
+
+private:
+    Process();
+    ~Process() override;
+};
+
+extern SharedPtr<Process> g_current_process;
+
+}

src/core/loader/3dsx.cpp

@@ -8,9 +8,10 @@
 #include "common/logging/log.h"
 
 #include "core/file_sys/archive_romfs.h"
+#include "core/hle/kernel/process.h"
+#include "core/hle/service/fs/archive.h"
 #include "core/loader/elf.h"
 #include "core/loader/ncch.h"
-#include "core/hle/service/fs/archive.h"
 #include "core/mem_map.h"
 
 #include "3dsx.h"
@@ -229,8 +230,12 @@ ResultStatus AppLoader_THREEDSX::Load() {
     if (!file->IsOpen())
         return ResultStatus::Error;
 
-    Load3DSXFile(*file, 0x00100000);
-    Kernel::LoadExec(0x00100000);
+    Kernel::g_current_process = Kernel::Process::Create(filename, 0);
+    Kernel::g_current_process->static_address_mappings = default_address_mappings;
+
+    Load3DSXFile(*file, Memory::EXEFS_CODE_VADDR);
+
+    Kernel::g_current_process->Run(Memory::EXEFS_CODE_VADDR, 48, Kernel::DEFAULT_STACK_SIZE);
 
     is_loaded = true;
     return ResultStatus::Success;

src/core/loader/3dsx.h

@@ -4,6 +4,8 @@
 
 #pragma once
 
+#include <string>
+
 #include "common/common_types.h"
 #include "core/loader/loader.h"
 
@@ -15,7 +17,8 @@ namespace Loader {
 /// Loads an 3DSX file
 class AppLoader_THREEDSX final : public AppLoader {
 public:
-    AppLoader_THREEDSX(std::unique_ptr<FileUtil::IOFile>&& file) : AppLoader(std::move(file)) { }
+    AppLoader_THREEDSX(std::unique_ptr<FileUtil::IOFile>&& file, std::string filename)
+        : AppLoader(std::move(file)), filename(std::move(filename)) {}
 
     /**
      * Returns the type of the file
@@ -29,6 +32,9 @@ public:
      * @return ResultStatus result of function
      */
     ResultStatus Load() override;
+
+private:
+    std::string filename;
 };
 
 } // namespace Loader

src/core/loader/elf.cpp

@@ -10,9 +10,9 @@
 #include "common/logging/log.h"
 #include "common/symbols.h"
 
-#include "core/mem_map.h"
-#include "core/loader/elf.h"
 #include "core/hle/kernel/kernel.h"
+#include "core/loader/elf.h"
+#include "core/mem_map.h"
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 // ELF Header Constants
@@ -350,9 +350,14 @@ ResultStatus AppLoader_ELF::Load() {
     if (file->ReadBytes(&buffer[0], size) != size)
         return ResultStatus::Error;
 
+    Kernel::g_current_process = Kernel::Process::Create(filename, 0);
+    Kernel::g_current_process->static_address_mappings = default_address_mappings;
+
     ElfReader elf_reader(&buffer[0]);
-    elf_reader.LoadInto(0x00100000);
-    Kernel::LoadExec(elf_reader.GetEntryPoint());
+    elf_reader.LoadInto(Memory::EXEFS_CODE_VADDR);
+    // TODO: Fill application title
+
+    Kernel::g_current_process->Run(elf_reader.GetEntryPoint(), 48, Kernel::DEFAULT_STACK_SIZE);
 
     is_loaded = true;
     return ResultStatus::Success;

src/core/loader/elf.h

@@ -4,6 +4,8 @@
 
 #pragma once
 
+#include <string>
+
 #include "common/common_types.h"
 #include "core/loader/loader.h"
 
@@ -15,7 +17,8 @@ namespace Loader {
 /// Loads an ELF/AXF file
 class AppLoader_ELF final : public AppLoader {
 public:
-    AppLoader_ELF(std::unique_ptr<FileUtil::IOFile>&& file) : AppLoader(std::move(file)) { }
+    AppLoader_ELF(std::unique_ptr<FileUtil::IOFile>&& file, std::string filename)
+        : AppLoader(std::move(file)), filename(std::move(filename)) { }
 
     /**
      * Returns the type of the file
@@ -29,6 +32,9 @@ public:
      * @return ResultStatus result of function
      */
     ResultStatus Load() override;
+
+private:
+    std::string filename;
 };
 
 } // namespace Loader

src/core/loader/loader.cpp

@@ -8,16 +8,23 @@
 #include "common/make_unique.h"
 
 #include "core/file_sys/archive_romfs.h"
+#include "core/hle/kernel/process.h"
+#include "core/hle/service/fs/archive.h"
 #include "core/loader/3dsx.h"
 #include "core/loader/elf.h"
 #include "core/loader/ncch.h"
-#include "core/hle/service/fs/archive.h"
 #include "core/mem_map.h"
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
 namespace Loader {
 
+const std::initializer_list<Kernel::StaticAddressMapping> default_address_mappings = {
+    { 0x1FF50000,   0x8000, true  }, // part of DSP RAM
+    { 0x1FF70000,   0x8000, true  }, // part of DSP RAM
+    { 0x1F000000, 0x600000, false }, // entire VRAM
+};
+
 /**
  * Identifies the type of a bootable file
  * @param file open file
@@ -42,19 +49,11 @@ static FileType IdentifyFile(FileUtil::IOFile& file) {
 
 /**
  * Guess the type of a bootable file from its extension
- * @param filename String filename of bootable file
+ * @param extension String extension of bootable file
  * @return FileType of file
  */
-static FileType GuessFromFilename(const std::string& filename) {
-    if (filename.size() == 0) {
-        LOG_ERROR(Loader, "invalid filename %s", filename.c_str());
-        return FileType::Error;
-    }
-
-    size_t extension_loc = filename.find_last_of('.');
-    if (extension_loc == std::string::npos)
-        return FileType::Unknown;
-    std::string extension = Common::ToLower(filename.substr(extension_loc));
+static FileType GuessFromExtension(const std::string& extension_) {
+    std::string extension = Common::ToLower(extension_);
 
     if (extension == ".elf")
         return FileType::ELF;
@@ -100,8 +99,11 @@ ResultStatus LoadFile(const std::string& filename) {
         return ResultStatus::Error;
     }
 
+    std::string filename_filename, filename_extension;
+    Common::SplitPath(filename, nullptr, &filename_filename, &filename_extension);
+
     FileType type = IdentifyFile(*file);
-    FileType filename_type = GuessFromFilename(filename);
+    FileType filename_type = GuessFromExtension(filename_extension);
 
     if (type != filename_type) {
         LOG_WARNING(Loader, "File %s has a different type than its extension.", filename.c_str());
@@ -115,11 +117,11 @@ ResultStatus LoadFile(const std::string& filename) {
 
     //3DSX file format...
     case FileType::THREEDSX:
-        return AppLoader_THREEDSX(std::move(file)).Load();
+        return AppLoader_THREEDSX(std::move(file), filename_filename).Load();
 
     // Standard ELF file format...
     case FileType::ELF:
-        return AppLoader_ELF(std::move(file)).Load();
+        return AppLoader_ELF(std::move(file), filename_filename).Load();
 
     // NCCH/NCSD container formats...
     case FileType::CXI:
@@ -139,11 +141,14 @@ ResultStatus LoadFile(const std::string& filename) {
     // Raw BIN file format...
     case FileType::BIN:
     {
+        Kernel::g_current_process = Kernel::Process::Create(filename_filename, 0);
+        Kernel::g_current_process->static_address_mappings = default_address_mappings;
+
         size_t size = (size_t)file->GetSize();
         if (file->ReadBytes(Memory::GetPointer(Memory::EXEFS_CODE_VADDR), size) != size)
             return ResultStatus::Error;
 
-        Kernel::LoadExec(Memory::EXEFS_CODE_VADDR);
+        Kernel::g_current_process->Run(Memory::EXEFS_CODE_VADDR, 0x30, Kernel::DEFAULT_STACK_SIZE);
         return ResultStatus::Success;
     }
 

src/core/loader/loader.h

@@ -9,6 +9,8 @@
 #include "common/common_types.h"
 #include "common/file_util.h"
 
+#include "core/hle/kernel/process.h"
+
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 // Loader namespace
 
@@ -104,6 +106,12 @@ protected:
     bool                              is_loaded = false;
 };
 
+/**
+ * Common address mappings found in most games, used for binary formats that don't have this
+ * information.
+ */
+extern const std::initializer_list<Kernel::StaticAddressMapping> default_address_mappings;
+
 /**
  * Identifies and loads a bootable file
  * @param filename String filename of bootable file

src/core/loader/ncch.cpp

@@ -5,9 +5,12 @@
 #include <memory>
 
 #include "common/logging/log.h"
+#include "common/make_unique.h"
+#include "common/string_util.h"
+#include "common/swap.h"
 
-#include "core/loader/ncch.h"
 #include "core/hle/kernel/kernel.h"
+#include "core/loader/ncch.h"
 #include "core/mem_map.h"
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -117,8 +120,21 @@ ResultStatus AppLoader_NCCH::LoadExec() const {
 
     std::vector<u8> code;
     if (ResultStatus::Success == ReadCode(code)) {
+        std::string process_name = Common::StringFromFixedZeroTerminatedBuffer(
+                (const char*)exheader_header.codeset_info.name, 8);
+        u64 program_id = *reinterpret_cast<u64_le const*>(&ncch_header.program_id[0]);
+        Kernel::g_current_process = Kernel::Process::Create(process_name, program_id);
+
+        // Copy data while converting endianess
+        std::array<u32, ARRAY_SIZE(exheader_header.arm11_kernel_caps.descriptors)> kernel_caps;
+        std::copy_n(exheader_header.arm11_kernel_caps.descriptors, kernel_caps.size(), begin(kernel_caps));
+        Kernel::g_current_process->ParseKernelCaps(kernel_caps.data(), kernel_caps.size());
+
         Memory::WriteBlock(entry_point, &code[0], code.size());
-        Kernel::LoadExec(entry_point);
+
+        s32 priority = exheader_header.arm11_system_local_caps.priority;
+        u32 stack_size = exheader_header.codeset_info.stack_size;
+        Kernel::g_current_process->Run(entry_point, priority, stack_size);
         return ResultStatus::Success;
     }
     return ResultStatus::Error;

src/core/loader/ncch.h

@@ -6,7 +6,9 @@
 
 #include <memory>
 
+#include "common/bit_field.h"
 #include "common/common_types.h"
+#include "common/swap.h"
 
 #include "core/loader/loader.h"
 
@@ -109,7 +111,13 @@ struct ExHeader_StorageInfo{
 struct ExHeader_ARM11_SystemLocalCaps{
     u8 program_id[8];
     u32 core_version;
-    u8 flags[3];
+    u8 reserved_flags[2];
+    union {
+        u8 flags0;
+        BitField<0, 2, u8> ideal_processor;
+        BitField<2, 2, u8> affinity_mask;
+        BitField<4, 4, u8> system_mode;
+    };
     u8 priority;
     u8 resource_limit_descriptor[0x10][2];
     ExHeader_StorageInfo storage_info;
@@ -120,7 +128,7 @@ struct ExHeader_ARM11_SystemLocalCaps{
 };
 
 struct ExHeader_ARM11_KernelCaps{
-    u8 descriptors[28][4];
+    u32_le descriptors[28];
     u8 reserved[0x10];
 };