core: Implement memory manager for linux

src/audio_core/sdl_audio.cpp

@@ -10,10 +10,6 @@
 
 namespace Audio {
 
-int SDLAudio::AudioInit() {
-    return SDL_InitSubSystem(SDL_INIT_AUDIO);
-}
-
 int SDLAudio::AudioOutOpen(int type, u32 samples_num, u32 freq,
                            Libraries::AudioOut::OrbisAudioOutParam format) {
     using Libraries::AudioOut::OrbisAudioOutParam;

src/audio_core/sdl_audio.h

@@ -14,7 +14,6 @@ public:
     SDLAudio() = default;
     virtual ~SDLAudio() = default;
 
-    int AudioInit();
     int AudioOutOpen(int type, u32 samples_num, u32 freq,
                      Libraries::AudioOut::OrbisAudioOutParam format);
     s32 AudioOutOutput(s32 handle, const void* ptr);

src/common/io_file.cpp

@@ -183,9 +183,8 @@ void IOFile::Open(const fs::path& path, FileAccessMode mode, FileType type, File
 #endif
 
     if (!IsOpen()) {
-        const auto ec = std::error_code{errno, std::generic_category()};
-        LOG_ERROR(Common_Filesystem, "Failed to open the file at path={}, ec_message={}",
-                  PathToUTF8String(file_path), ec.message());
+        LOG_ERROR(Common_Filesystem, "Failed to open the file at path={}",
+                  PathToUTF8String(file_path));
     }
 }
 

src/core/address_space.cpp

@@ -10,6 +10,7 @@
 #ifdef _WIN32
 #include <windows.h>
 #else
+#include <fcntl.h>
 #include <sys/mman.h>
 #endif
 
@@ -215,25 +216,96 @@ enum PosixPageProtection {
 
 struct AddressSpace::Impl {
     Impl() {
-        UNREACHABLE();
+        // Allocate virtual address placeholder for our address space.
+        void* hint_address = reinterpret_cast<void*>(SYSTEM_MANAGED_MIN);
+        virtual_size = SystemSize + UserSize;
+        virtual_base = reinterpret_cast<u8*>(
+            mmap(reinterpret_cast<void*>(hint_address), virtual_size, PROT_READ | PROT_WRITE,
+                 MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE, -1, 0));
+        if (virtual_base == MAP_FAILED) {
+            LOG_CRITICAL(Kernel_Vmm, "mmap failed: {}", strerror(errno));
+            throw std::bad_alloc{};
+        }
+        madvise(virtual_base, virtual_size, MADV_HUGEPAGE);
+
+        backing_fd = memfd_create("BackingDmem", 0);
+        if (backing_fd < 0) {
+            LOG_CRITICAL(Kernel_Vmm, "memfd_create failed: {}", strerror(errno));
+            throw std::bad_alloc{};
+        }
+
+        // Defined to extend the file with zeros
+        int ret = ftruncate(backing_fd, BackingSize);
+        if (ret != 0) {
+            LOG_CRITICAL(Kernel_Vmm, "ftruncate failed with {}, are you out-of-memory?",
+                         strerror(errno));
+            throw std::bad_alloc{};
+        }
+
+        // Map backing dmem handle.
+        backing_base = static_cast<u8*>(
+            mmap(nullptr, BackingSize, PROT_READ | PROT_WRITE, MAP_SHARED, backing_fd, 0));
+        if (backing_base == MAP_FAILED) {
+            LOG_CRITICAL(Kernel_Vmm, "mmap failed: {}", strerror(errno));
+            throw std::bad_alloc{};
+        }
+
+        const VAddr start_addr = reinterpret_cast<VAddr>(virtual_base);
+        m_free_regions.insert({start_addr, start_addr + virtual_size});
     }
 
     void* Map(VAddr virtual_addr, PAddr phys_addr, size_t size, PosixPageProtection prot) {
-        UNREACHABLE();
-        return nullptr;
+        m_free_regions.subtract({virtual_addr, virtual_addr + size});
+        const int fd = phys_addr != -1 ? backing_fd : -1;
+        const int host_offset = phys_addr != -1 ? phys_addr : 0;
+        const int flag = phys_addr != -1 ? MAP_SHARED : (MAP_ANONYMOUS | MAP_PRIVATE);
+        void* ret = mmap(reinterpret_cast<void*>(virtual_addr), size, prot, MAP_FIXED | flag, fd,
+                         host_offset);
+        ASSERT_MSG(ret != MAP_FAILED, "mmap failed: {}", strerror(errno));
+        return ret;
     }
 
     void Unmap(VAddr virtual_addr, PAddr phys_addr, size_t size) {
-        UNREACHABLE();
+        // Check to see if we are adjacent to any regions.
+        auto start_address = virtual_addr;
+        auto end_address = start_address + size;
+        auto it = m_free_regions.find({start_address - 1, end_address + 1});
+
+        // If we are, join with them, ensuring we stay in bounds.
+        if (it != m_free_regions.end()) {
+            start_address = std::min(start_address, it->lower());
+            end_address = std::max(end_address, it->upper());
+        }
+
+        // Free the relevant region.
+        m_free_regions.insert({start_address, end_address});
+
+        // Return the adjusted pointers.
+        void* ret = mmap(reinterpret_cast<void*>(start_address), end_address - start_address,
+                         PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
+        ASSERT_MSG(ret != MAP_FAILED, "mmap failed: {}", strerror(errno));
     }
 
     void Protect(VAddr virtual_addr, size_t size, bool read, bool write, bool execute) {
-        UNREACHABLE();
+        int flags = PROT_NONE;
+        if (read) {
+            flags |= PROT_READ;
+        }
+        if (write) {
+            flags |= PROT_WRITE;
+        }
+        if (execute) {
+            flags |= PROT_EXEC;
+        }
+        int ret = mprotect(reinterpret_cast<void*>(virtual_addr), size, flags);
+        ASSERT_MSG(ret == 0, "mprotect failed: {}", strerror(errno));
     }
 
+    int backing_fd;
     u8* backing_base{};
     u8* virtual_base{};
     size_t virtual_size{};
+    boost::icl::interval_set<VAddr> m_free_regions;
 };
 #endif
 

src/core/libraries/audio/audioout.cpp

@@ -192,9 +192,8 @@ int PS4_SYSV_ABI sceAudioOutGetSystemState() {
 
 int PS4_SYSV_ABI sceAudioOutInit() {
     audio = std::make_unique<Audio::SDLAudio>();
-    u32 result = audio->AudioInit() == 0 ? ORBIS_OK : ORBIS_AUDIO_OUT_ERROR_NOT_INIT;
-    LOG_INFO(Lib_AudioOut, "AudioInit returned {}", result);
-    return result;
+    LOG_INFO(Lib_AudioOut, "called");
+    return ORBIS_OK;
 }
 
 int PS4_SYSV_ABI sceAudioOutInitIpmiGetSession() {

src/core/libraries/kernel/thread_management.cpp

@@ -393,6 +393,8 @@ void* createMutex(void* addr) {
     if (addr == nullptr || *static_cast<ScePthreadMutex*>(addr) != nullptr) {
         return addr;
     }
+    static std::mutex mutex;
+    std::scoped_lock lk{mutex};
     auto vaddr = reinterpret_cast<u64>(addr);
 
     std::string name = fmt::format("mutex{:#x}", vaddr);
@@ -464,7 +466,7 @@ int PS4_SYSV_ABI scePthreadMutexattrInit(ScePthreadMutexattr* attr) {
 
     int result = pthread_mutexattr_init(&(*attr)->pth_mutex_attr);
 
-    result = (result == 0 ? scePthreadMutexattrSettype(attr, 1) : result);
+    result = (result == 0 ? scePthreadMutexattrSettype(attr, 2) : result);
     result = (result == 0 ? scePthreadMutexattrSetprotocol(attr, 0) : result);
 
     switch (result) {
@@ -1165,6 +1167,10 @@ int PS4_SYSV_ABI posix_pthread_create_name_np(ScePthread* thread, const ScePthre
     return result;
 }
 
+int PS4_SYSV_ABI scePthreadOnce(int* once_control, void (*init_routine)(void)) {
+    return pthread_once(reinterpret_cast<pthread_once_t*>(once_control), init_routine);
+}
+
 void pthreadSymbolsRegister(Core::Loader::SymbolsResolver* sym) {
     LIB_FUNCTION("4+h9EzwKF4I", "libkernel", 1, "libkernel", 1, 1, scePthreadAttrSetschedpolicy);
     LIB_FUNCTION("-Wreprtu0Qs", "libkernel", 1, "libkernel", 1, 1, scePthreadAttrSetdetachstate);
@@ -1191,6 +1197,7 @@ void pthreadSymbolsRegister(Core::Loader::SymbolsResolver* sym) {
     LIB_FUNCTION("6UgtwV+0zb4", "libkernel", 1, "libkernel", 1, 1, scePthreadCreate);
     LIB_FUNCTION("T72hz6ffq08", "libkernel", 1, "libkernel", 1, 1, scePthreadYield);
     LIB_FUNCTION("-quPa4SEJUw", "libkernel", 1, "libkernel", 1, 1, scePthreadAttrGetstack);
+    LIB_FUNCTION("14bOACANTBo", "libkernel", 1, "libkernel", 1, 1, scePthreadOnce);
 
     // mutex calls
     LIB_FUNCTION("cmo1RIYva9o", "libkernel", 1, "libkernel", 1, 1, scePthreadMutexInit);

src/core/libraries/kernel/thread_management.h

@@ -27,7 +27,7 @@ struct PthreadMutexattrInternal;
 struct PthreadCondInternal;
 struct PthreadCondAttrInternal;
 struct PthreadRwInternal;
-struct PthreadRwLockAttrInernal;
+struct PthreadRwLockAttrInternal;
 
 using SceKernelSchedParam = ::sched_param;
 using ScePthread = PthreadInternal*;
@@ -37,7 +37,7 @@ using ScePthreadMutexattr = PthreadMutexattrInternal*;
 using ScePthreadCond = PthreadCondInternal*;
 using ScePthreadCondattr = PthreadCondAttrInternal*;
 using OrbisPthreadRwlock = PthreadRwInternal*;
-using OrbisPthreadRwlockattr = PthreadRwLockAttrInernal*;
+using OrbisPthreadRwlockattr = PthreadRwLockAttrInternal*;
 
 using pthreadEntryFunc = PS4_SYSV_ABI void* (*)(void*);
 
@@ -86,7 +86,7 @@ struct PthreadCondAttrInternal {
     pthread_condattr_t cond_attr;
 };
 
-struct PthreadRwLockAttrInernal {
+struct PthreadRwLockAttrInternal {
     u8 reserved[64];
     pthread_rwlockattr_t attr_rwlock;
     int type;

src/core/libraries/kernel/threads/kernel_threads_rwlock.cpp

@@ -121,7 +121,7 @@ int PS4_SYSV_ABI posix_pthread_rwlockattr_gettype_np() {
 }
 
 int PS4_SYSV_ABI posix_pthread_rwlockattr_init(OrbisPthreadRwlockattr* attr) {
-    *attr = new PthreadRwLockAttrInernal{};
+    *attr = new PthreadRwLockAttrInternal{};
     int result = pthread_rwlockattr_init(&(*attr)->attr_rwlock);
     if (result != 0) {
         LOG_ERROR(Kernel_Pthread, "posix_pthread_rwlockattr_init: error = {}", result);
@@ -161,7 +161,7 @@ int PS4_SYSV_ABI scePthreadRwlockattrGettype() {
 }
 
 int PS4_SYSV_ABI scePthreadRwlockattrInit(OrbisPthreadRwlockattr* attr) {
-    *attr = new PthreadRwLockAttrInernal{};
+    *attr = new PthreadRwLockAttrInternal{};
     int result = pthread_rwlockattr_init(&(*attr)->attr_rwlock);
     if (result != 0) {
         LOG_ERROR(Kernel_Pthread, "scePthreadRwlockattrInit: error = {}", result);

src/core/tls.cpp

@@ -125,12 +125,12 @@ static void PatchFsAccess(u8* code, const TLSPattern& tls_pattern, Xbyak::CodeGe
     const auto target_reg = Xbyak::Reg64(tls_pattern.target_reg);
     c.putSeg(fs);
     c.mov(target_reg, qword[SelfInTcbheadOffset]); // Load self member pointer of tcbhead_t.
-    c.lea(target_reg,
-          ptr[SpecificFirstBlockOffset + slot * PthreadKeyDataSize +
-              sizeof(uintptr_t)]); // Load the pointer to our data.
-    c.jmp(code + total_size);      // Return to the instruction right after the mov.
+    c.add(target_reg, SpecificFirstBlockOffset + sizeof(uintptr_t) + slot * PthreadKeyDataSize);
+    c.jmp(code + total_size); // Return to the instruction right after the mov.
 }
 
+#endif
+
 void PatchTLS(u64 segment_addr, u64 segment_size, Xbyak::CodeGenerator& c) {
     u8* code = reinterpret_cast<u8*>(segment_addr);
     auto remaining_size = segment_size;
@@ -187,6 +187,4 @@ void PatchTLS(u64 segment_addr, u64 segment_size, Xbyak::CodeGenerator& c) {
     }
 }
 
-#endif
-
 } // namespace Core

src/emulator.cpp

@@ -111,7 +111,7 @@ void Emulator::Run(const std::filesystem::path& file) {
         std::jthread([this](std::stop_token stop_token) { linker->Execute(); });
 
     // Begin main window loop until the application exits
-    static constexpr std::chrono::microseconds FlipPeriod{100000};
+    static constexpr std::chrono::microseconds FlipPeriod{10};
 
     while (window.isOpen()) {
         window.waitEvent();

src/sdl_window.cpp

@@ -19,6 +19,7 @@ WindowSDL::WindowSDL(s32 width_, s32 height_, Input::GameController* controller_
     if (SDL_Init(SDL_INIT_VIDEO) < 0) {
         UNREACHABLE_MSG("Failed to initialize SDL video subsystem: {}", SDL_GetError());
     }
+    SDL_InitSubSystem(SDL_INIT_AUDIO);
 
     const std::string title = "shadPS4 v" + std::string(Common::VERSION);
     SDL_PropertiesID props = SDL_CreateProperties();