2026-09-25 13:00:48

Signed-off-by: lizzie <lizzie@eden-emu.dev>

docs/user/CommandLine.md

@@ -1,32 +1,44 @@
 # User Handbook - Command Line
 
-There are two main applications, an SDL-based app (`eden-cli`) and a Qt based app (`eden`); both accept command line arguments.
-
-## eden
+There are two main applications, an SDL-based app (`eden-cli`) and a Qt based app (`eden`); both accept the same command line arguments.
 
 - `./eden <path>`: Running with a single argument and nothing else, will make the emulator look for the given file and load it, this behavior is similar to `eden-cli`; allows dragging and dropping games into the application.
-- `-g <path>`: Alternate way to specify what to load, overrides. However let it be noted that arguments that use `-` will be treated as options/ignored, if your game, for some reason, starts with `-`, in order to safely handle it you may need to specify it as an argument.
-- `-f`: Use fullscreen.
-- `-u <number>`: Select the index of the user to load as.
-- `-input-profile <name>`: Specifies input profile name to use (for player #0 only).
+- `--debug/-d`: Enter debug mode, allow gdb stub at port `1234`
+- `--config/-c`: Specify alternate configuration file.
+- `--fullscreen/-f`: Use fullscreen.
+- `--help/-h`: Display help.
+- `--game/-g <path>`: Alternate way to specify what to load, overrides. However let it be noted that arguments that use `-` will be treated as options/ignored, if your game, for some reason, starts with `-`, in order to safely handle it you may need to specify it as an argument.
+- `--multiplayer/-m`: Specify multiplayer options.
+- `--program/-p`: Specify the program arguments to pass (optional).
+- `--user/-u <number>`: Specify the user index.
+- `--version/-v`: Display version and quit.
+- `--input-profile/-i <name>`: Specifies input profile name to use (for player #0 only).
+- `--null-render/-n`: Forces the usage of the "Null" render backend irrespective of settings.
+- `--filter/-x`: Sets the debug log filter irrespective of settings.
+- `--singlecore/-s`: Forces single-core regardless of settings.
+
+Only the Qt frontend supports the following arguments:
+
 - `-qlaunch`: Launch QLaunch.
 - `-hlaunch`: Launch homebrew launcher `nx-hbloader`.
     - Requires a copy of Atmosphere to be extracted onto `sdmc`.
     - This is a shorthand for `<eden folder>/sdmc/atmosphere/hbl.nsp`.
 - `-setup`: Launch setup applet.
 
-## eden-cli
+`eden` (provided with `--room`), and `eden-room` supports the following options as well:
 
-- `--debug/-d`: Enter debug mode, allow gdb stub at port `1234`
-- `--config/-c`: Specify alternate configuration file.
-- `--fullscreen/-f`: Set fullscreen.
-- `--help/-h`: Display help.
-- `--game/-g`: Specify the game to run.
-- `--multiplayer/-m`: Specify multiplayer options.
-- `--program/-p`: Specify the program arguments to pass (optional).
-- `--user/-u`: Specify the user index.
-- `--version/-v`: Display version and quit.
-- `--input-profile/-i`: Specifies input profile name to use (for player #0 only).
-- `--null-render/-n`: Forces the usage of the "Null" render backend irrespective of settings.
-- `--filter/-x`: Sets the debug log filter irrespective of settings.
-- `--singlecore/-s`: Forces single-core regardless of settings.
+- `-n/--room-name`: The name of the room.
+- `-d/--room-description`: The room description.
+- `-s/--bind-address`: The bind address for the room.
+- `-p/--port`: The port used for the room.
+- `-m/--max-members`: The maximum number of players for this room.
+- `-w/--password`: The password for the room.
+- `-g/--preferred-game`: The preferred game for this room.
+- `-i/--preferred-game-id`: The preferred game-id for this room.
+- `-u/--username`: The username used for announce.
+- `-t/--token`: The token used for announce.
+- `-a/--web-api-url`: yuzu Web API url.
+- `-b/--ban-list-file`: The file for storing the room ban list.
+- `-l/--log-file`: The file for storing the room log.
+- `-h/--help`: Display this help and exit.
+- `-v/--version`: Output version information and exit.

src/common/CMakeLists.txt

@@ -76,7 +76,6 @@ add_library(
     logging.h
     lz4_compression.cpp
     lz4_compression.h
-    make_unique_for_overwrite.h
     math_util.h
     memory_detect.cpp
     memory_detect.h

src/common/make_unique_for_overwrite.h

@@ -1,27 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include <memory>
-#include <type_traits>
-
-namespace Common {
-
-template <class T>
-    requires(!std::is_array_v<T>)
-std::unique_ptr<T> make_unique_for_overwrite() {
-    return std::unique_ptr<T>(new T);
-}
-
-template <class T>
-    requires std::is_unbounded_array_v<T>
-std::unique_ptr<T> make_unique_for_overwrite(std::size_t n) {
-    return std::unique_ptr<T>(new std::remove_extent_t<T>[n]);
-}
-
-template <class T, class... Args>
-    requires std::is_bounded_array_v<T>
-void make_unique_for_overwrite(Args&&...) = delete;
-
-} // namespace Common

src/common/scratch_buffer.h

@@ -8,8 +8,7 @@
 
 #include <iterator>
 #include <cstring>
-
-#include "common/make_unique_for_overwrite.h"
+#include <memory>
 
 namespace Common {
 
@@ -38,8 +37,9 @@ public:
     ScratchBuffer() = default;
 
     explicit ScratchBuffer(size_type initial_capacity)
-        : last_requested_size{initial_capacity}, buffer_capacity{initial_capacity},
-          buffer{Common::make_unique_for_overwrite<T[]>(initial_capacity)} {}
+        : last_requested_size{initial_capacity}
+        , buffer_capacity{initial_capacity}
+        , buffer{std::make_unique_for_overwrite<T[]>(initial_capacity)} {}
 
     ~ScratchBuffer() = default;
     ScratchBuffer(const ScratchBuffer&) = delete;
@@ -64,7 +64,7 @@ public:
     /// The previously held data will remain intact.
     void resize(size_type size) {
         if (size > buffer_capacity) {
-            auto new_buffer = Common::make_unique_for_overwrite<T[]>(size);
+            auto new_buffer = std::make_unique_for_overwrite<T[]>(size);
             std::memcpy(new_buffer.get(), buffer.get(), buffer_capacity * sizeof(T));
             buffer = std::move(new_buffer);
             buffer_capacity = size;
@@ -77,7 +77,7 @@ public:
     void resize_destructive(size_type size) {
         if (size > buffer_capacity) {
             buffer_capacity = size;
-            buffer = Common::make_unique_for_overwrite<T[]>(buffer_capacity);
+            buffer = std::make_unique_for_overwrite<T[]>(buffer_capacity);
         }
         last_requested_size = size;
     }

src/common/sparse_large_vector.cpp

@@ -8,7 +8,14 @@
 #ifdef _WIN32
 #include <windows.h>
 #include <mutex>
-#else
+#include <algorithm>
+#include <vector>
+#endif
+
+#include <cerrno>
+#include <cstring>
+
+#ifndef _WIN32
 #include <sys/mman.h>
 #endif
 
@@ -19,54 +26,60 @@
 namespace Common {
 
 #ifdef _WIN32
-static std::vector<std::pair<u64, u64>> vector_regions {};
 
-// Workaround for handling non-commited memory accessed by Dynarmic; usually result of an error
+struct VectorRegion {
+    u64 start_page;
+    u64 end_page;
+};
+
+static std::mutex& GetVectorRegionsMutex() {
+    static std::mutex* m = new std::mutex();
+    return *m;
+}
+
+static std::vector<VectorRegion>& GetVectorRegions() {
+    static std::vector<VectorRegion>* v = new std::vector<VectorRegion>();
+    return *v;
+}
+
 static LONG WINAPI FakePageFaultHandler(PEXCEPTION_POINTERS info) {
-    DWORD code = info->ExceptionRecord->ExceptionCode;
-    u64 exception_addr = reinterpret_cast<u64>(info->ExceptionRecord->ExceptionAddress);
-
-    if (code != EXCEPTION_ACCESS_VIOLATION) {
-        // Not our problem
+    if (info->ExceptionRecord->ExceptionCode != EXCEPTION_ACCESS_VIOLATION) {
         return EXCEPTION_CONTINUE_SEARCH;
     }
 
-    u64 addr = 0, addr2 = 0;
+    const u64 fault_addr = info->ExceptionRecord->ExceptionInformation[1];
+    const u64 access_type = info->ExceptionRecord->ExceptionInformation[0];
+    const bool is_write = (access_type == 1);
+    const u64 fault_page = fault_addr >> HostPageBits;
 
-    for (auto region: vector_regions) {
-        auto addr_shifted = exception_addr >> HostPageBits;
-        if (region.first <= addr_shifted && addr_shifted <= region.second) {
-            addr = addr_shifted;
-        }
+    u64 addr = 0;
+    u64 addr2 = 0;
 
-        // Page-boundary accesses
-        if (auto addr_ = (exception_addr + 0x40) >> HostPageBits; addr_ != addr_shifted && region.first <= addr_ && addr_ <= region.second) {
-            addr2 = addr_;
-        }
-
-        if (addr != 0 || addr2 != 0) {
-            break;
+    {
+        std::lock_guard lock(GetVectorRegionsMutex());
+        for (const auto& region : GetVectorRegions()) {
+            if (fault_page >= region.start_page && fault_page < region.end_page) {
+                addr = fault_page;
+            }
+            const u64 page2 = (fault_addr + 0x3F) >> HostPageBits;
+            if (page2 != fault_page && page2 >= region.start_page && page2 < region.end_page) {
+                addr2 = page2;
+            }
+            if (addr != 0 || addr2 != 0) break;
         }
     }
 
     if (addr == 0 && addr2 == 0) {
-        // Not our problem
         return EXCEPTION_CONTINUE_SEARCH;
     }
 
-    LOG_ERROR(HW_Memory, "Accessing an unallocated region of a SparseLargeVector at {:#x}; this shouldn't happen and is likely a Dynarmic error!", exception_addr);
+    LOG_ERROR(HW_Memory, "Accessing an unallocated region of a SparseLargeVector at {:#x}; this shouldn't happen and is likely a Dynarmic error!", fault_addr);
 
-    // Commit this region
-    if (addr != 0) {
-        if (!CommitVectorPage(addr << HostPageBits, false)) {
-            return EXCEPTION_CONTINUE_SEARCH;
-        }
+    if (addr != 0 && !CommitVectorPage(addr << HostPageBits, is_write)) {
+        return EXCEPTION_CONTINUE_SEARCH;
     }
-    // Commit next region if needed
-    if (addr2 != 0) {
-        if (!CommitVectorPage(addr2 << HostPageBits, false)) {
-            return EXCEPTION_CONTINUE_SEARCH;
-        }
+    if (addr2 != 0 && !CommitVectorPage(addr2 << HostPageBits, is_write)) {
+        return EXCEPTION_CONTINUE_SEARCH;
     }
 
     return EXCEPTION_CONTINUE_EXECUTION;
@@ -74,70 +87,139 @@ static LONG WINAPI FakePageFaultHandler(PEXCEPTION_POINTERS info) {
 
 bool CommitVectorPage(uintptr_t addr, bool write) noexcept {
     MEMORY_BASIC_INFORMATION info {};
-    auto res = VirtualQuery(reinterpret_cast<void*>(addr), &info, sizeof(info));
+    const auto res = VirtualQuery(reinterpret_cast<void*>(addr), &info, sizeof(info));
+    const DWORD perm = write ? PAGE_READWRITE : PAGE_READONLY;
+
     if (res == 0) {
         LOG_CRITICAL(HW_Memory, "Failed to query large buffer region at {:#x} with error {}, will try committing anyway", addr, GetLastError());
+    } else if (info.State == MEM_COMMIT) {
+        DWORD old_protect {};
+        if (!VirtualProtect(reinterpret_cast<void*>(addr), HostPageSize, perm, &old_protect)) {
+            LOG_ERROR(HW_Memory, "VirtualProtect failed at {:#x}, error {}", addr, GetLastError());
+            return false;
+        }
+        return true;
     } else if (info.State != MEM_RESERVE) {
-        LOG_ERROR(HW_Memory, "Tried to commit an unreserved large buffer region at {:#x} that is not mapped or is already committed (state {:#x})", addr, info.State);
+        LOG_ERROR(HW_Memory, "Tried to commit an unreserved large buffer region at {:#x} (state {:#x})", addr, info.State);
         return false;
     }
 
-    auto perm = write ? PAGE_READWRITE : PAGE_READONLY;
-    void* res2 = VirtualAlloc(reinterpret_cast<LPVOID>(addr), HostPageSize, MEM_COMMIT, perm);
-    if (res2 == nullptr) {
+    if (VirtualAlloc(reinterpret_cast<LPVOID>(addr), HostPageSize, MEM_COMMIT, perm) == nullptr) {
         LOG_ERROR(HW_Memory, "Failed to commit large buffer region at {:#x}, error {}", addr, GetLastError());
         return false;
     }
 
     return true;
 }
+
 #endif
 
 #ifndef MAP_NOCORE
 #define MAP_NOCORE 0
 #endif
+#ifndef MADV_FREE
+#define MADV_FREE MADV_DONTNEED
+#endif
+
+void DecommitVectorPage(uintptr_t base) noexcept {
+#if defined(_WIN32)
+    if (!VirtualFree(reinterpret_cast<LPVOID>(base), HostPageSize, MEM_DECOMMIT)) {
+        LOG_WARNING(HW_Memory, "VirtualFree(MEM_DECOMMIT) failed at {:#x}, error {}", base, GetLastError());
+    }
+#elif defined(__linux__)
+    if (madvise(reinterpret_cast<void*>(base), HostPageSize, MADV_DONTNEED) != 0) {
+        LOG_WARNING(HW_Memory, "madvise(MADV_DONTNEED) failed at {:#x}: {}", base, std::strerror(errno));
+    }
+#else
+    if (madvise(reinterpret_cast<void*>(base), HostPageSize, MADV_FREE) != 0) {
+        LOG_WARNING(HW_Memory, "madvise(MADV_FREE) failed at {:#x}: {}", base, std::strerror(errno));
+    }
+    std::memset(reinterpret_cast<void*>(base), 0, HostPageSize);
+#endif
+}
 
 void* AllocateMemoryPages(std::size_t size) noexcept {
-    if (auto page = HostPageSize; size % page != 0) {
+    if (size == 0) {
+        return nullptr;
+    }
+
+    const auto page = HostPageSize;
+    if (size % page != 0) {
         LOG_WARNING(HW_Memory, "Allocating unaligned large vector with size {:#x}; aligning to {} page size", size, page);
+        if (size > SIZE_MAX - (page - 1)) {
+            LOG_CRITICAL(HW_Memory, "Size {:#x} would overflow page alignment", size);
+            return nullptr;
+        }
         size = AlignUp(size, page);
     }
 
 #ifdef _WIN32
-    // We will never use this memory entirely so instead of committing it up front let's just reserve it and commit each page individually
     void* base = VirtualAlloc(nullptr, size, MEM_RESERVE, PAGE_READWRITE);
 
     if (base != nullptr) {
-        vector_regions.emplace_back(reinterpret_cast<u64>(base), reinterpret_cast<u64>(base) + size);
+        {
+            std::lock_guard lock(GetVectorRegionsMutex());
+            GetVectorRegions().push_back({
+                reinterpret_cast<u64>(base) >> HostPageBits,
+                (reinterpret_cast<u64>(base) + size) >> HostPageBits,
+            });
+        }
 
         static std::once_flag flag;
         std::call_once(flag, []() { AddVectoredExceptionHandler(1, FakePageFaultHandler); });
     } else {
-        // Try committing everything instead??
         LOG_WARNING(HW_Memory, "Failed to reserve large vector region with error {}, trying to commit instead..", GetLastError());
         base = VirtualAlloc(nullptr, size, MEM_COMMIT, PAGE_READWRITE);
     }
     ASSERT_MSG(base, "Failed to reserve {:#x} sized region with error {}", size, GetLastError());
 #else
-    void* base = mmap(nullptr, size, PROT_READ, MAP_ANON | MAP_PRIVATE | MAP_NOCORE, -1, 0);
-    if (base == MAP_FAILED)
-        base = nullptr;
-    ASSERT_MSG(base, "Failed to allocate {:#x} sized region with error {}", size, strerror(errno));
+    int flags = MAP_ANON | MAP_PRIVATE;
+#ifdef MAP_NORESERVE
+    flags |= MAP_NORESERVE;
 #endif
+#if defined(MAP_NOCORE)
+    flags |= MAP_NOCORE;
+#endif
+    void* base = mmap(nullptr, size, PROT_READ, flags, -1, 0);
+    if (base == MAP_FAILED) {
+        base = nullptr;
+    }
+#ifdef MADV_HUGEPAGE
+    if (base != nullptr) {
+        madvise(base, size, MADV_HUGEPAGE);
+    }
+#endif
+    ASSERT_MSG(base, "Failed to allocate {:#x} sized region with error {}", size, std::strerror(errno));
+#endif
+
     return base;
 }
 
 void FreeMemoryPages(void* base, [[maybe_unused]] std::size_t size) noexcept {
-    if (auto page = HostPageSize; size % page != 0) {
+    if (base == nullptr) {
+        return;
+    }
+
+    if (const auto page = HostPageSize; size % page != 0) {
         size = AlignUp(size, page);
     }
-    if (!base)
-        return;
+
 #ifdef _WIN32
-    ASSERT(VirtualFree(base, 0, MEM_RELEASE));
+    {
+        std::lock_guard lock(GetVectorRegionsMutex());
+        auto& regions = GetVectorRegions();
+        const u64 base_page = reinterpret_cast<u64>(base) >> HostPageBits;
+        regions.erase(std::remove_if(regions.begin(), regions.end(),
+            [base_page](const VectorRegion& r) { return r.start_page == base_page; }), regions.end());
+    }
+    if (!VirtualFree(base, 0, MEM_RELEASE)) {
+        LOG_ERROR(HW_Memory, "VirtualFree failed, error {}", GetLastError());
+    }
 #else
-    ASSERT(munmap(base, size) == 0);
+    if (munmap(base, size) != 0) {
+        LOG_ERROR(HW_Memory, "munmap failed: {}", std::strerror(errno));
+    }
 #endif
 }
 
-} // namespace Common
+} // namespace Common

src/common/sparse_large_vector.h

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 /* virtual_buffer.h */
@@ -7,10 +7,14 @@
 
 #pragma once
 
+#include <array>
 #include <atomic>
 #include <bit>
-#include <utility>
-#include <vector>
+#include <cerrno>
+#include <cstdlib>
+#include <cstring>
+#include <memory>
+#include <type_traits>
 
 #ifndef _WIN32
 #include <unistd.h>
@@ -28,13 +32,14 @@ constexpr u64 HostPageBits = 12;
 constexpr u64 HostPageMask = ~(HostPageSize - 1);
 bool CommitVectorPage(uintptr_t addr, bool write) noexcept;
 #else
-const u64 HostPageSize = sysconf(_SC_PAGESIZE);
-const u64 HostPageBits = std::countr_zero(HostPageSize);
-const u64 HostPageMask = ~(HostPageSize - 1);
+inline const u64 HostPageSize = static_cast<u64>(sysconf(_SC_PAGESIZE));
+inline const u64 HostPageBits = std::countr_zero(HostPageSize);
+inline const u64 HostPageMask = ~(HostPageSize - 1);
 #endif
 
 void* AllocateMemoryPages(std::size_t size) noexcept;
 void FreeMemoryPages(void* base, std::size_t size) noexcept;
+void DecommitVectorPage(uintptr_t base) noexcept;
 
 /// A large page-aligned buffer that has optimized memory usage for zero-writes.
 template <typename T>
@@ -42,20 +47,18 @@ template <typename T>
     // requires std::is_trivially_copyable_v<T>
 class SparseLargeVector final {
 public:
-    constexpr SparseLargeVector() = default;
+    SparseLargeVector() = default;
 
-    explicit SparseLargeVector(std::size_t count) noexcept
-        : alloc_size{count * sizeof(T)}
-    {
-        base_ptr = static_cast<T*>(AllocateMemoryPages(alloc_size));
-
-        // each item in vector holds information for 64 pages
-        auto denom = HostPageSize * 64;
-        committed_pages = std::vector<std::atomic<u64>>((alloc_size + denom - 1) / denom);
+    explicit SparseLargeVector(std::size_t count) noexcept {
+        if (count > SIZE_MAX / sizeof(T)) {
+            LOG_CRITICAL(Common_Memory, "SparseLargeVector size overflow: {} elements", count);
+            return;
+        }
+        Allocate(count * sizeof(T));
     }
 
     ~SparseLargeVector() noexcept {
-        FreeMemoryPages(base_ptr, alloc_size);
+        Release();
     }
 
     SparseLargeVector(const SparseLargeVector&) = delete;
@@ -64,132 +67,181 @@ public:
     SparseLargeVector& operator=(SparseLargeVector&& other) = delete;
 
     void ResizeAndClear(std::size_t count) noexcept {
-        if (auto const new_size = count * sizeof(T); new_size != alloc_size) {
-            FreeMemoryPages(base_ptr, alloc_size);
-            alloc_size = new_size;
-            base_ptr = static_cast<T*>(AllocateMemoryPages(alloc_size));
-
-            auto denom = HostPageSize * 64;
-            committed_pages = std::vector<std::atomic<u64>>((alloc_size + denom - 1) / denom);
+        if (count > SIZE_MAX / sizeof(T)) {
+            LOG_CRITICAL(Common_Memory, "SparseLargeVector resize overflow: {} elements", count);
+            return;
         }
+        const std::size_t new_size = count * sizeof(T);
+        if (new_size == alloc_size) {
+            ZeroRegion(0, alloc_size / sizeof(T));
+            return;
+        }
+        Release();
+        Allocate(new_size);
     }
 
-    /// Returns a reference to the value of the requested index and allocates memory if needed.
     T& GetAndFault(std::size_t index) noexcept {
-        if (index > alloc_size / sizeof(T)) {
-            UNREACHABLE_MSG("Out of bounds RW access on SparseLargeVector @ {}", index);
+        if (base_ptr == nullptr || index >= size()) [[unlikely]] {
+            LOG_CRITICAL(Common_Memory, "SparseLargeVector RW access out of bounds @ {} (size {})", index, size());
+            std::abort();
         }
-
-        if (!IsCommittedPage(index)) {
-            CommitPage(index);
+        const u64 byte_offset = static_cast<u64>(index) * sizeof(T);
+        if (!CommitPage(byte_offset)) [[unlikely]] {
+            LOG_CRITICAL(Common_Memory, "SparseLargeVector commit failed @ {} (offset {:#x})", index, byte_offset);
+            std::abort();
         }
         return base_ptr[index];
     }
 
-    /// Returns a reference to the value of the requested index if initialized, or will otherwise return a zero-initialized object.
-    const T& GetOrDefault(std::size_t index) const {
+    const T& GetOrDefault(std::size_t index) const noexcept {
+        if (base_ptr == nullptr || index >= size()) [[unlikely]] {
+            LOG_CRITICAL(Common_Memory, "SparseLargeVector RO access out of bounds @ {}", index);
+            return DefaultValue();
+        }
 #ifdef _WIN32
-        if (!IsCommittedPage(index)) {
-            return *reinterpret_cast<const T*>(&default_val);
+        if (!IsPageCommitted(static_cast<u64>(index) * sizeof(T))) {
+            return DefaultValue();
         }
 #endif
-        // On non-Windows, OS page table should optimize this by pointing to a zero page if unallocated.
         return base_ptr[index];
     }
 
     void Set(std::size_t index, const T& value) noexcept {
-        if (index > alloc_size / sizeof(T)) {
-            LOG_CRITICAL(Common_Memory, "Out of bounds write on SparseLargeVector @ {}", index);
+        if (base_ptr == nullptr || index >= size()) [[unlikely]] {
+            LOG_CRITICAL(Common_Memory, "SparseLargeVector write out of bounds @ {}", index);
+            return;
+        }
+        const u64 byte_offset = static_cast<u64>(index) * sizeof(T);
+        if (!CommitPage(byte_offset)) [[unlikely]] {
+            LOG_CRITICAL(Common_Memory, "SparseLargeVector commit failed for write @ {}", index);
             return;
         }
-        if (!IsCommittedPage(index))
-            CommitPage(index);
         base_ptr[index] = value;
     }
 
     void ZeroRegion(std::size_t start, std::size_t end_) noexcept {
-        u64 base = reinterpret_cast<u64>(&base_ptr[start]);
-        const u64 end = reinterpret_cast<u64>(&base_ptr[end_]);
+        if (base_ptr == nullptr || start >= end_) return;
 
-        const u64 end_page = AlignUp(base, HostPageSize);
-        const u64 first_size = (std::min)(end_page, end) - base;
+        const u64 start_off = static_cast<u64>(start) * sizeof(T);
+        const u64 end_off = static_cast<u64>(end_) * sizeof(T);
+        const u64 first_page_end = (start_off + HostPageSize - 1) & HostPageMask;
 
-        if (IsCommittedPage(start / sizeof(T))) {
-            std::memset(reinterpret_cast<void*>(base), 0, first_size);
-        }
-
-        if (end <= end_page)
-            return;
-
-        base = end_page;
-
-        for (u64 page = base; page < end; page += HostPageSize) {
-            if (!IsCommittedPage((page - reinterpret_cast<u64>(base_ptr)) / sizeof(T))) {
-                continue;
+        if (start_off < first_page_end) {
+            const u64 chunk_end = (std::min)(first_page_end, end_off);
+            const u64 chunk_size = chunk_end - start_off;
+            if (chunk_size != 0 && IsPageCommitted(start_off)) {
+                std::memset(reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(base_ptr) + start_off), 0, chunk_size);
             }
-
-            std::memset(reinterpret_cast<void*>(page), 0, (std::min)( HostPageSize, end - page));
+            if (end_off <= first_page_end) return;
         }
-    }
 
-    constexpr void CommitRegion(size_t index, size_t end_) {
-        const u64 base = static_cast<u64>(index) * sizeof(T);
-        const u64 end = static_cast<u64>(end_) * sizeof(T);
-
-        for (u64 page = AlignDown(base, HostPageSize); page < end; page += HostPageSize) {
-            if (!IsCommittedPage(page / sizeof(T))) {
-                CommitPage(page / sizeof(T));
+        for (u64 off = first_page_end; off < end_off; off += HostPageSize) {
+            if (!IsPageCommitted(off)) continue;
+            const u64 remaining = end_off - off;
+            if (remaining >= HostPageSize) {
+                DecommitPage(off);
+            } else {
+                std::memset(reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(base_ptr) + off), 0, remaining);
             }
         }
     }
 
-    constexpr T& GetUnchecked(size_t index) {
-        return base_ptr[index];
+    void CommitRegion(std::size_t index, std::size_t end_) noexcept {
+        if (base_ptr == nullptr || index >= end_) return;
+        const u64 start_off = static_cast<u64>(index) * sizeof(T);
+        const u64 end_off = static_cast<u64>(end_) * sizeof(T);
+        const u64 start_page = start_off & HostPageMask;
+        for (u64 off = start_page; off < end_off; off += HostPageSize) {
+            if (!IsPageCommitted(off)) {
+                (void)CommitPage(off);
+            }
+        }
     }
 
-    [[nodiscard]] constexpr const T& operator[](std::size_t index) const noexcept {
-        return GetOrDefault(index);
-    }
+    T& GetUnchecked(std::size_t index) noexcept { return base_ptr[index]; }
 
-    [[nodiscard]] constexpr const T* data() const noexcept {
-        return base_ptr;
-    }
-
-    [[nodiscard]] constexpr std::size_t size() const noexcept {
-        return alloc_size / sizeof(T);
-    }
+    [[nodiscard]] const T& operator[](std::size_t index) const noexcept { return GetOrDefault(index); }
+    [[nodiscard]] const T* data() const noexcept { return base_ptr; }
+    [[nodiscard]] std::size_t size() const noexcept { return alloc_size / sizeof(T); }
 
 private:
-    [[nodiscard]] constexpr bool IsCommittedPage(std::size_t index) const noexcept {
-        if (index > alloc_size / sizeof(T)) {
-            LOG_CRITICAL(Common_Memory, "Out of bounds access on large vector @ {}", index);
-            return false;
+    void Allocate(std::size_t new_size) noexcept {
+        alloc_size = new_size;
+        if (alloc_size == 0) {
+            base_ptr = nullptr;
+            committed_pages.reset();
+            return;
         }
-
-        auto page = (index * sizeof(T)) >> HostPageBits;
-        auto val = committed_pages[page >> 6].load(std::memory_order_acquire);
-        return (val >> (page & 63)) & 1;
+        base_ptr = static_cast<T*>(AllocateMemoryPages(alloc_size));
+        const std::size_t num_pages = NumPages();
+        const std::size_t num_words = (num_pages + 63) / 64;
+        committed_pages = std::make_unique<std::atomic<u64>[]>(num_words);
     }
 
-    constexpr void CommitPage(std::size_t index) noexcept {
-        auto page_index = (index * sizeof(T)) >> HostPageBits;
-        auto page = reinterpret_cast<uintptr_t>(base_ptr + index) & HostPageMask;
-#if defined(_WIN32)
-        CommitVectorPage(page, true);
-#else
-        mprotect(reinterpret_cast<void*>(page), HostPageSize, PROT_READ | PROT_WRITE);
-#endif
+    void Release() noexcept {
+        if (base_ptr != nullptr) {
+            FreeMemoryPages(base_ptr, alloc_size);
+            base_ptr = nullptr;
+        }
+        committed_pages.reset();
+        alloc_size = 0;
+    }
 
-        committed_pages[page_index >> 6].fetch_or(1ULL << (page_index & 63), std::memory_order_release);
+    [[nodiscard]] u64 NumPages() const noexcept {
+        return (alloc_size + HostPageSize - 1) >> HostPageBits;
+    }
+
+    [[nodiscard]] bool IsPageCommitted(u64 byte_offset) const noexcept {
+        const u64 page_index = byte_offset >> HostPageBits;
+        if (committed_pages == nullptr || page_index >= NumPages()) return false;
+        const auto val = committed_pages[page_index >> 6].load(std::memory_order_acquire);
+        return (val >> (page_index & 63)) & 1;
+    }
+
+    void SetPageBit(u64 page_index, bool value) noexcept {
+        if (committed_pages == nullptr) return;
+        const u64 bit = 1ULL << (page_index & 63);
+        auto& atom = committed_pages[page_index >> 6];
+        if (value) {
+            atom.fetch_or(bit, std::memory_order_release);
+        } else {
+            atom.fetch_and(~bit, std::memory_order_release);
+        }
+    }
+
+    bool CommitPage(u64 byte_offset) noexcept {
+        const u64 page_index = byte_offset >> HostPageBits;
+        const uintptr_t page_addr = (reinterpret_cast<uintptr_t>(base_ptr) + byte_offset) & HostPageMask;
+
+        if (IsPageCommitted(byte_offset)) return true;
+
+#if defined(_WIN32)
+        if (!CommitVectorPage(page_addr, true)) return false;
+#else
+        if (mprotect(reinterpret_cast<void*>(page_addr), HostPageSize, PROT_READ | PROT_WRITE) != 0) {
+            LOG_ERROR(Common_Memory, "mprotect failed at {:#x}: {}", page_addr, std::strerror(errno));
+            return false;
+        }
+#endif
+        SetPageBit(page_index, true);
+        return true;
+    }
+
+    void DecommitPage(u64 byte_offset) noexcept {
+        const u64 page_index = byte_offset >> HostPageBits;
+        const uintptr_t page_addr = (reinterpret_cast<uintptr_t>(base_ptr) + byte_offset) & HostPageMask;
+        DecommitVectorPage(page_addr);
+        SetPageBit(page_index, false);
+    }
+
+    [[nodiscard]] const T& DefaultValue() const noexcept {
+        return *reinterpret_cast<const T*>(&default_val);
     }
 
     std::size_t alloc_size{};
     T* base_ptr{};
-
-    std::vector<std::atomic<u64>> committed_pages{};
-#ifdef _WIN32
-    const std::array<u8, sizeof(T)> default_val{};
-#endif
+    std::unique_ptr<std::atomic<u64>[]> committed_pages{};
+    alignas(T) const std::array<u8, sizeof(T)> default_val{};
 };
 
-} // namespace Common
+} // namespace Common

src/core/CMakeLists.txt

@@ -23,6 +23,8 @@ add_library(core STATIC
     core_timing.h
     cpu_manager.cpp
     cpu_manager.h
+    launch_params.cpp
+    launch_params.h
     crypto/aes_util.cpp
     crypto/aes_util.h
     crypto/ctr_encryption_layer.cpp
@@ -1203,6 +1205,9 @@ endif()
 
 target_include_directories(core PRIVATE ${OPUS_INCLUDE_DIRS})
 target_link_libraries(core PUBLIC common PRIVATE audio_core hid_core network video_core nx_tzdb tz)
+if (MSVC)
+    target_link_libraries(core PRIVATE getopt)
+endif()
 
 if (BOOST_NO_HEADERS)
     target_link_libraries(core PUBLIC Boost::container Boost::heap Boost::asio Boost::process Boost::crc)

src/core/file_sys/vfs/vfs_real.cpp

@@ -109,8 +109,7 @@ VirtualFile RealVfsFilesystem::OpenFileFromEntry(std::string_view path_, std::op
     auto reference = std::make_unique<FileReference>();
     this->InsertReferenceIntoListLocked(*reference);
 
-    auto file = std::shared_ptr<RealVfsFile>(
-        new RealVfsFile(*this, std::move(reference), path, perms, size, std::move(parent_path)));
+    auto file = std::make_shared<RealVfsFile>(*this, std::move(reference), path, perms, size, std::move(parent_path));
     cache[path] = file;
 
     return file;
@@ -177,7 +176,7 @@ bool RealVfsFilesystem::DeleteFile(std::string_view path_) {
 
 VirtualDir RealVfsFilesystem::OpenDirectory(std::string_view path_, OpenMode perms) {
     const auto path = FS::SanitizePath(path_, FS::DirectorySeparator::PlatformDefault);
-    return std::shared_ptr<RealVfsDirectory>(new RealVfsDirectory(*this, path, perms));
+    return std::make_shared<RealVfsDirectory>(*this, path, perms);
 }
 
 VirtualDir RealVfsFilesystem::CreateDirectory(std::string_view path_, OpenMode perms) {
@@ -185,7 +184,7 @@ VirtualDir RealVfsFilesystem::CreateDirectory(std::string_view path_, OpenMode p
     if (!FS::CreateDirs(path)) {
         return nullptr;
     }
-    return std::shared_ptr<RealVfsDirectory>(new RealVfsDirectory(*this, path, perms));
+    return std::make_shared<RealVfsDirectory>(*this, path, perms);
 }
 
 VirtualDir RealVfsFilesystem::CopyDirectory(std::string_view old_path_,

src/core/file_sys/vfs/vfs_real.h

@@ -82,6 +82,9 @@ class RealVfsFile : public VfsFile {
     friend class RealVfsFilesystem;
 
 public:
+    RealVfsFile(RealVfsFilesystem& base, std::unique_ptr<FileReference> reference,
+                const std::string& path, OpenMode perms = OpenMode::Read,
+                std::optional<u64> size = {}, std::optional<std::string> parent_path = {});
     ~RealVfsFile() override;
 
     std::string GetName() const override;
@@ -95,9 +98,6 @@ public:
     bool Rename(std::string_view name) override;
 
 private:
-    RealVfsFile(RealVfsFilesystem& base, std::unique_ptr<FileReference> reference,
-                const std::string& path, OpenMode perms = OpenMode::Read,
-                std::optional<u64> size = {}, std::optional<std::string> parent_path = {});
 
     RealVfsFilesystem& base;
     std::unique_ptr<FileReference> reference;
@@ -113,6 +113,8 @@ class RealVfsDirectory : public VfsDirectory {
     friend class RealVfsFilesystem;
 
 public:
+    RealVfsDirectory(RealVfsFilesystem& base, const std::string& path,
+                     OpenMode perms = OpenMode::Read);
     ~RealVfsDirectory() override;
 
     VirtualFile GetFileRelative(std::string_view relative_path) const override;
@@ -138,9 +140,6 @@ public:
     std::map<std::string, VfsEntryType, std::less<>> GetEntries() const override;
 
 private:
-    RealVfsDirectory(RealVfsFilesystem& base, const std::string& path,
-                     OpenMode perms = OpenMode::Read);
-
     template <typename T, typename R>
     std::vector<std::shared_ptr<R>> IterateEntries() const;
 

src/core/hle/service/am/window_system.cpp

@@ -517,7 +517,7 @@ void WindowSystem::UpdateAppletStateLocked(Applet* applet, bool is_foreground, b
     // Layer ordering. Composition sorts back-to-front. Now with enums for calrity.
     s32 z_index = Background;
     if (is_overlay) {
-        z_index = Overlay;
+        z_index = this->IsOverlayOpenLocked(*applet) ? Overlay : Background;
     } else if (inherited_foreground) {
         z_index = is_obscured ? Foreground : ForegroundVisible;
     }

src/core/hle/service/audio/audio.cpp

@@ -191,7 +191,7 @@ void LoopProcess(Core::System& system) {
     server_manager->RegisterNamedService("audout:d", std::make_shared<IAudioOutManagerForDebugger>(system), 30);
     server_manager->RegisterNamedService("audin:d", std::make_shared<IAudioInManagerForDebugger>(system), 30);
     server_manager->RegisterNamedService("audrec:d", std::make_shared<IFinalOutputRecorderManagerForDebugger>(system), 30);
-    server_manager->RegisterNamedService("audren:d", std::make_shared<IAudioInManager>(system), 30);
+    server_manager->RegisterNamedService("audren:d", std::make_shared<IAudioRendererManagerForDebugger>(system), 30);
 
     server_manager->RegisterNamedService("audin:u", std::make_shared<IAudioInManager>(system), 30);
     server_manager->RegisterNamedService("audin:a", std::make_shared<IAudioInManagerForApplet>(system), 30);

src/core/hle/service/psc/ovln/receiver_service.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
@@ -24,7 +24,7 @@ IReceiverService::~IReceiverService() = default;
 
 Result IReceiverService::OpenReceiver(Out<SharedPointer<IReceiver>> out_receiver) {
     LOG_DEBUG(Service_PSC, "called");
-    *out_receiver = std::shared_ptr<IReceiver>(new IReceiver(system));
+    *out_receiver = std::make_shared<IReceiver>(system);
     R_SUCCEED();
 }
 

src/core/launch_params.cpp

@@ -0,0 +1,205 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include <regex>
+#include <cctype>
+
+#include "common/assert.h"
+#include "common/logging.h"
+#include "common/settings.h"
+#include "common/string_util.h"
+#include "common/scm_rev.h"
+#include "core/core.h"
+#include "core/hle/service/acc/profile_manager.h"
+#include "core/launch_params.h"
+
+#undef _UNICODE
+#include <getopt.h>
+#ifndef _MSC_VER
+#include <unistd.h>
+#endif
+
+namespace Core {
+LaunchParams ParseLaunchParams(Core::System& system, int argc, char *argv[], wchar_t *argv_w[]) noexcept {
+    LaunchParams p{};
+
+    int option_index = 0;
+    static struct option long_options[] = {
+        // clang-format off
+        {"debug", no_argument, 0, 'd'},
+        {"config", required_argument, 0, 'c'},
+        {"fullscreen", no_argument, 0, 'f'},
+        {"help", no_argument, 0, 'h'},
+        {"game", required_argument, 0, 'g'},
+        {"multiplayer", required_argument, 0, 'm'},
+        {"program", optional_argument, 0, 'p'},
+        {"user", required_argument, 0, 'u'},
+        {"version", no_argument, 0, 'v'},
+        {"input-profile", no_argument, 0, 'i'},
+        {"null-render", no_argument, 0, 'n'},
+        {"singlecore", no_argument, 0, 's'},
+        {"filter", no_argument, 0, 'x'},
+        {0, 0, 0, 0},
+        // clang-format on
+    };
+
+    while (optind < argc) {
+        if (int arg = getopt_long(argc, argv, "dc:fhg:m:p:u:vinsx", long_options, &option_index); arg != -1) {
+            switch (char(arg)) {
+            case 'd':
+                p.override_gdb_port = uint16_t(atoi(optarg));
+                break;
+            case 'c':
+                p.config_path = optarg;
+                break;
+            case 'f':
+                p.fullscreen = true;
+                LOG_INFO(Frontend, "Starting in fullscreen mode...");
+                break;
+            case 'h':
+                p.print_help = true;
+                break;
+            case 'g':
+                p.filepath = std::string(optarg);
+                break;
+            case 'i': {
+                p.input_profile = std::string(optarg);
+                break;
+            }
+            case 'm': {
+                p.use_multiplayer = true;
+                const std::string str_arg(optarg);
+                // regex to check if the format is nickname:password@ip:port
+                // with optional :password
+                const std::regex re("^([^:]+)(?::(.+))?@([^:]+)(?::([0-9]+))?$");
+                if (std::regex_match(str_arg, re)) {
+                    std::smatch match;
+                    std::regex_search(str_arg, match, re);
+                    ASSERT(match.size() == 5);
+                    p.nickname = match[1];
+                    p.password = match[2];
+                    p.address = match[3];
+                    if (!match[4].str().empty()) {
+                        p.port = u16(std::strtoul(match[4].str().c_str(), nullptr, 0));
+                    }
+                    std::regex nickname_re("^[a-zA-Z0-9._\\- ]+$");
+                    ASSERT(std::regex_match(p.nickname, nickname_re) && "Nickname is not valid. Must be 4 to 20 alphanumeric characters");
+                    ASSERT(!p.address.empty() && "Address is empty");
+                }
+                break;
+            }
+            case 'p':
+                p.program_args = argv[optind];
+                ++optind;
+                break;
+            case 'u': {
+                // Launch game with a specific user
+                bool argument_ok = isdigit(optarg[0]);
+                p.selected_user = atoi(optarg);
+                if (!argument_ok) {
+                    // try to look it up by username, only finds the first username that matches.
+                    auto const user_idx = system.GetProfileManager().GetUserIndex(optarg);
+                    if (user_idx != std::nullopt) {
+                        p.selected_user = user_idx.value();
+                    } else {
+                        LOG_ERROR(Frontend, "Invalid user argument '{}'", optarg);
+                        break;
+                    }
+                }
+                if (system.GetProfileManager().UserExistsIndex(*p.selected_user)) {
+                    Settings::values.current_user = s32(*p.selected_user);
+                } else {
+                    LOG_ERROR(Frontend, "Selected user {} doesn't exist", *p.selected_user);
+                }
+                break;
+            }
+            case 'v':
+                p.print_version = true;
+                break;
+            case 'n':
+                p.force_null_render = true;
+                break;
+            case 's':
+                p.force_single_core = true;
+                break;
+            case 'x':
+                p.log_filter = argv[optind];
+                ++optind;
+                break;
+            }
+        } else {
+            // only kept due to shortcuts made by Qt frontend which use "-qlaunch"
+            if (strcmp(argv[optind], "-hlaunch") == 0) {
+                p.launch_hlaunch = true;
+            } else if (strcmp(argv[optind], "-qlaunch") == 0) {
+                p.launch_qlaunch = true;
+            } else if (strcmp(argv[optind], "-setup") == 0) {
+                p.launch_setup = true;
+            } else {
+                // qt feeds utf8 data, sdl frontend feeds raw utf16 data
+#ifdef _WIN32
+                p.filepath = argv_w != nullptr
+                    ? Common::UTF16ToUTF8(argv_w[optind])
+                    : argv[optind];
+#else
+                p.filepath = argv[optind];
+#endif
+            }
+            optind++;
+        }
+    }
+    p.argv0 = argv[0];
+    return p;
+}
+
+void ApplyLaunchParams(LaunchParams const& lp) noexcept {
+    // apply the log_filter setting
+    // the logger was initialized before and doesn't pick up the filter on its own
+    Common::Log::Filter filter{};
+    filter.ParseFilterString(lp.log_filter.value_or(Settings::values.log_filter.GetValue()));
+    Common::Log::SetGlobalFilter(filter);
+
+    if (!lp.program_args.empty()) {
+        Settings::values.program_args = lp.program_args;
+    }
+    if (!lp.input_profile.empty()) {
+        auto& players = Settings::values.players.GetValue();
+        players[0].profile_name = lp.input_profile;
+    }
+    if (lp.selected_user.has_value()) {
+        Settings::values.current_user = std::clamp(*lp.selected_user, 0, 7);
+    }
+    if (lp.override_gdb_port.has_value()) {
+        Settings::values.use_gdbstub = true;
+        Settings::values.gdbstub_port = *lp.override_gdb_port;
+    }
+    if (lp.force_single_core) {
+        Settings::values.use_multi_core = false;
+    }
+    if (lp.force_null_render) {
+        Settings::values.renderer_backend = Settings::RendererBackend::Null;
+    }
+
+    if (lp.print_version) {
+        LOG_INFO(Frontend, "Eden {} {}", Common::g_scm_branch, Common::g_scm_desc);
+    }
+    if (lp.print_help) {
+        LOG_INFO(Frontend,
+            "Usage: {}"
+            " [options] <filename>\n"
+            "-c, --config          Load the specified configuration file\n"
+            "-f, --fullscreen      Start in fullscreen mode\n"
+            "-g, --game            File path of the game to load\n"
+            "-h, --help            Display this help and exit\n"
+            "-m, --multiplayer=nick:password@address:port"
+            " Nickname, password, address and port for multiplayer\n"
+            "-p, --program         Pass following string as arguments to executable\n"
+            "-u, --user            Select a specific user profile from 0 to 7\n"
+            "-d, --debug           Run the GDB stub on a port from 1 to 65535\n"
+            "-v, --version         Output version information and exit\n",
+            lp.argv0
+        );
+    }
+}
+
+}

src/core/launch_params.h

@@ -0,0 +1,43 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <string>
+#include <optional>
+#include "common/common_types.h"
+#include "network/room.h"
+
+namespace Core {
+
+class System;
+struct LaunchParams {
+    std::string argv0{};
+    std::string filepath{};
+    std::string nickname{};
+    std::string password{};
+    std::string address{};
+    std::string input_profile{};
+    std::string program_args{};
+    std::optional<std::string> config_path{};
+    std::optional<int> selected_user{};
+    std::optional<u16> override_gdb_port{};
+    std::optional<std::string> log_filter{};
+    u16 port = Network::DefaultRoomPort;
+    bool use_multiplayer = false;
+    bool fullscreen = false;
+    bool force_null_render = false;
+    bool force_single_core = false;
+    // print
+    bool print_version = false;
+    bool print_help = false;
+    // qt
+    bool launch_hlaunch = false;
+    bool launch_qlaunch = false;
+    bool launch_setup = false;
+};
+
+LaunchParams ParseLaunchParams(Core::System& system, int argc, char *argv[], wchar_t *argv_w[]) noexcept;
+void ApplyLaunchParams(LaunchParams const& lp) noexcept;
+
+}

src/hid_core/resources/npad/npad.cpp

@@ -45,6 +45,19 @@ NPad::NPad(Core::HID::HIDCore& hid_core_, KernelHelpers::ServiceContext& service
         AbstractPad{hid_core_.kernel},
     }}
 {
+    for (std::size_t aruid_index = 0; aruid_index < AruidIndexMax; ++aruid_index) {
+        for (std::size_t i = 0; i < controller_data[aruid_index].size(); ++i) {
+            auto& controller = controller_data[aruid_index][i];
+            controller.device = hid_core.GetEmulatedControllerByIndex(i);
+            Core::HID::ControllerUpdateCallback engine_callback{
+                .on_change = [this, i, kernel = &hid_core.kernel](Core::HID::ControllerTriggerType type) {
+                    ControllerUpdate(*kernel, type, i);
+                },
+                .is_npad_service = true,
+            };
+            controller.callback_key = controller.device->SetCallback(engine_callback);
+        }
+    }
     for (std::size_t i = 0; i < abstracted_pads.size(); ++i) {
         abstracted_pads[i].SetNpadId(IndexToNpadIdType(i));
     }
@@ -93,16 +106,6 @@ Result NPad::Activate(u64 aruid) {
     for (std::size_t i = 0; i < controller_data[aruid_index].size(); ++i) {
         auto& controller = controller_data[aruid_index][i];
         controller.shared_memory = &data->shared_memory_format->npad.npad_entry[i].internal_state;
-        controller.device = hid_core.GetEmulatedControllerByIndex(i);
-        if (!controller.callback_key) {
-            Core::HID::ControllerUpdateCallback engine_callback{
-                .on_change = [this, i](Core::HID::ControllerTriggerType type) {
-                    ControllerUpdate(hid_core.kernel, type, i);
-                },
-                .is_npad_service = true,
-            };
-            controller.callback_key = controller.device->SetCallback(engine_callback);
-        }
     }
 
     // Prefill controller buffers

src/shader_recompiler/backend/glsl/emit_glsl.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -28,11 +31,6 @@ struct FuncTraits<ReturnType_ (*)(Args...)> {
     using ArgType = std::tuple_element_t<I, std::tuple<Args...>>;
 };
 
-template <auto func, typename... Args>
-void SetDefinition(EmitContext& ctx, IR::Inst* inst, Args... args) {
-    inst->SetDefinition<Id>(func(ctx, std::forward<Args>(args)...));
-}
-
 template <typename ArgType>
 auto Arg(EmitContext& ctx, const IR::Value& arg) {
     if constexpr (std::is_same_v<ArgType, std::string_view>) {
@@ -53,21 +51,10 @@ auto Arg(EmitContext& ctx, const IR::Value& arg) {
 template <auto func, bool is_first_arg_inst, size_t... I>
 void Invoke(EmitContext& ctx, IR::Inst* inst, std::index_sequence<I...>) {
     using Traits = FuncTraits<decltype(func)>;
-    if constexpr (std::is_same_v<typename Traits::ReturnType, Id>) {
-        if constexpr (is_first_arg_inst) {
-            SetDefinition<func>(
-                ctx, inst, *inst,
-                Arg<typename Traits::template ArgType<I + 2>>(ctx, inst->Arg(I))...);
-        } else {
-            SetDefinition<func>(
-                ctx, inst, Arg<typename Traits::template ArgType<I + 1>>(ctx, inst->Arg(I))...);
-        }
+    if constexpr (is_first_arg_inst) {
+        func(ctx, *inst, Arg<typename Traits::template ArgType<I + 2>>(ctx, inst->Arg(I))...);
     } else {
-        if constexpr (is_first_arg_inst) {
-            func(ctx, *inst, Arg<typename Traits::template ArgType<I + 2>>(ctx, inst->Arg(I))...);
-        } else {
-            func(ctx, Arg<typename Traits::template ArgType<I + 1>>(ctx, inst->Arg(I))...);
-        }
+        func(ctx, Arg<typename Traits::template ArgType<I + 1>>(ctx, inst->Arg(I))...);
     }
 }
 

src/video_core/buffer_cache/buffer_cache.h

@@ -121,7 +121,7 @@ void BufferCache<P>::UnmapGPUMemory(size_t as_id, GPUVAddr gpu_addr, size_t size
 
 template <class P>
 void BufferCache<P>::WriteMemory(DAddr device_addr, u64 size) {
-    if (memory_tracker.IsRegionGpuModified(device_addr, size)) {
+    if (IsRegionGpuModified(device_addr, size)) {
         ClearDownload(device_addr, size);
         gpu_modified_ranges.Subtract(device_addr, size);
     }
@@ -311,11 +311,8 @@ std::pair<typename P::Buffer*, u32> BufferCache<P>::ObtainCPUBuffer(
         MarkWrittenBuffer(buffer_id, device_addr, size);
         break;
     case ObtainBufferOperation::DiscardWrite: {
-        const DAddr device_addr_start = Common::AlignDown(device_addr, 64);
-        const DAddr device_addr_end = Common::AlignUp(device_addr + size, 64);
-        const size_t new_size = device_addr_end - device_addr_start;
-        ClearDownload(device_addr_start, new_size);
-        gpu_modified_ranges.Subtract(device_addr_start, new_size);
+        ClearDownload(device_addr, size);
+        gpu_modified_ranges.Subtract(device_addr, size);
         break;
     }
     default:
@@ -1742,14 +1739,24 @@ bool BufferCache<P>::SynchronizeBuffer(Buffer& buffer, DAddr device_addr, u32 si
     u64 total_size_bytes = 0;
     u64 largest_copy = 0;
     const DAddr buffer_start = buffer.cpu_addr_cached;
-    memory_tracker.ForEachUploadRange(device_addr, size, [&](u64 device_addr_out, u64 range_size) {
+    const auto add_upload = [&](DAddr start, DAddr end) {
+        if (start == end) return;
+        const u64 range_size = end - start;
         upload_copies.push_back(BufferCopy{
             .src_offset = total_size_bytes,
-            .dst_offset = device_addr_out - buffer_start,
+            .dst_offset = start - buffer_start,
             .size = range_size,
         });
         total_size_bytes += range_size;
         largest_copy = (std::max)(largest_copy, range_size);
+    };
+    memory_tracker.ForEachUploadRange(device_addr, size, [&](u64 device_addr_out, u64 range_size) {
+        DAddr upload_start = device_addr_out;
+        gpu_modified_ranges.ForEachInRange(device_addr_out, range_size, [&](DAddr gpu_start, DAddr gpu_end) {
+            add_upload(upload_start, gpu_start);
+            upload_start = gpu_end;
+        });
+        add_upload(upload_start, device_addr_out + range_size);
     });
     if (total_size_bytes == 0) {
         return true;

src/video_core/dma_pusher.cpp

@@ -16,7 +16,7 @@
 namespace Tegra {
 
 constexpr u32 MacroRegistersStart = 0xE00;
-[[maybe_unused]] constexpr u32 ComputeInline = 0x6D;
+constexpr u32 ComputeInline = 0x6D;
 
 DmaPusher::DmaPusher(Core::System& system_, MemoryManager& memory_manager_, Control::ChannelState& channel_state_)
     : system{system_}
@@ -73,11 +73,16 @@ bool DmaPusher::Step() {
         synced = false;
     }
 
-    if (header.size > 0 && dma_state.method >= MacroRegistersStart && subchannels[dma_state.subchannel]) {
-        subchannels[dma_state.subchannel]->current_dirty = memory_manager.IsMemoryDirty(dma_state.dma_get, header.size * sizeof(u32));
-    }
-
     if (header.size > 0) {
+        if (subchannels[dma_state.subchannel] && dma_state.method_count) {
+            const auto engine = subchannel_type[dma_state.subchannel];
+            const bool kepler_payload = engine == Engines::EngineTypes::KeplerCompute && dma_state.method == ComputeInline && dma_state.non_incrementing;
+            const bool macro_payload = engine == Engines::EngineTypes::Maxwell3D && dma_state.method >= MacroRegistersStart;
+            if (kepler_payload || macro_payload) {
+                const size_t words = std::min<size_t>(dma_state.method_count, header.size);
+                subchannels[dma_state.subchannel]->current_dirty = memory_manager.IsMemoryDirty(dma_state.dma_get, words * sizeof(u32));
+            }
+        }
         const bool use_safe = Settings::IsDMALevelDefault() ? Settings::IsGPULevelHigh() : Settings::IsDMALevelSafe();
         if (use_safe) {
             Tegra::Memory::GpuGuestMemory<Tegra::CommandHeader, Tegra::Memory::GuestMemoryFlags::SafeRead>headers(memory_manager, dma_state.dma_get, header.size, &command_headers);

src/video_core/engines/kepler_compute.cpp

@@ -49,13 +49,16 @@ void KeplerCompute::CallMethod(Core::System& system, u32 method, u32 method_argu
     case KEPLER_COMPUTE_REG_INDEX(exec_upload): {
         UploadInfo info{.upload_address = upload_address,
                         .exec_address = upload_state.ExecTargetAddress(),
-                        .copy_size = upload_state.GetUploadSize()};
+                        .copy_size = upload_state.GetUploadSize(),
+                        .was_dirty = upload_dirty};
         uploads.push_back(info);
         upload_state.ProcessExec(regs.exec_upload.linear != 0);
         break;
     }
     case KEPLER_COMPUTE_REG_INDEX(data_upload): {
         upload_address = current_dma_segment;
+        upload_dirty = current_dirty;
+        current_dirty = false;
         upload_state.ProcessData(method_argument, is_last_call);
         break;
     }
@@ -64,9 +67,11 @@ void KeplerCompute::CallMethod(Core::System& system, u32 method, u32 method_argu
 
         for (auto& data : uploads) {
             const GPUVAddr offset = data.exec_address - launch_desc_loc;
-            if (offset / sizeof(u32) == LAUNCH_REG_INDEX(grid_dim_x) &&
-                memory_manager.IsMemoryDirty(data.upload_address, data.copy_size)) {
-                indirect_compute = {data.upload_address};
+            if (offset / sizeof(u32) == LAUNCH_REG_INDEX(grid_dim_x)) {
+                const bool source_dirty = memory_manager.IsMemoryDirty(data.upload_address, data.copy_size);
+                if (data.was_dirty || source_dirty) {
+                    indirect_compute = {data.upload_address};
+                }
             }
         }
         uploads.clear();
@@ -83,6 +88,8 @@ void KeplerCompute::CallMultiMethod(Core::System& system, u32 method, const u32*
     switch (method) {
     case KEPLER_COMPUTE_REG_INDEX(data_upload):
         upload_address = current_dma_segment;
+        upload_dirty = current_dirty;
+        current_dirty = false;
         upload_state.ProcessData(base_start, amount);
         return;
     default:

src/video_core/engines/kepler_compute.h

@@ -226,11 +226,13 @@ private:
     VideoCore::RasterizerInterface* rasterizer = nullptr;
     Upload::State upload_state;
     GPUVAddr upload_address;
+    bool upload_dirty{};
 
     struct UploadInfo {
         GPUVAddr upload_address;
         GPUVAddr exec_address;
         u32 copy_size;
+        bool was_dirty;
     };
     std::vector<UploadInfo> uploads;
     std::optional<GPUVAddr> indirect_compute{};

src/video_core/renderer_vulkan/present/layer.cpp

@@ -94,11 +94,14 @@ void Layer::ConfigureDraw(const Device& device, PresentPushConstants* out_push_c
     const u32 scaled_width = texture_info ? texture_info->scaled_width : texture_width;
     const u32 scaled_height = texture_info ? texture_info->scaled_height : texture_height;
     const bool use_accelerated = texture_info.has_value();
+    const bool is_applet =
+        (framebuffer.layer_stack_mask & Service::Nvnflinger::LayerStackBit(
+                                            Service::Nvnflinger::LayerStackId::Recording)) == 0;
 
     RefreshResources(device, framebuffer);
     SetAntiAliasPass(device);
 #ifdef HAS_RESHADE
-    SetPostProcessPass(device);
+    SetPostProcessPass(device, is_applet);
 #endif
 
     // Finish any pending renderpass
@@ -138,8 +141,11 @@ void Layer::ConfigureDraw(const Device& device, PresentPushConstants* out_push_c
         source_image_view = fsr->Draw(device, scheduler, image_index, source_image, source_image_view, render_extent, crop_rect);
         crop_rect = {0, 0, 1, 1};
     } else if (auto* sgsr = std::get_if<SGSR>(&sr_filter)) {
-        source_image_view = sgsr->Draw(device, scheduler, image_index, source_image, source_image_view, render_extent, crop_rect);
-        crop_rect = {0, 0, 1, 1};
+        if (!is_applet) {
+            source_image_view = sgsr->Draw(device, scheduler, image_index, source_image,
+                                           source_image_view, render_extent, crop_rect);
+            crop_rect = {0, 0, 1, 1};
+        }
     }
 
     SetMatrixData(device, *out_push_constants, layout);
@@ -228,7 +234,11 @@ void Layer::SetAntiAliasPass(const Device& device) {
 }
 
 #ifdef HAS_RESHADE
-void Layer::SetPostProcessPass(const Device& device) {
+void Layer::SetPostProcessPass(const Device& device, bool is_applet) {
+    if (is_applet) {
+        post_process.reset();
+        return;
+    }
     const VkExtent2D render_area{
         .width = Settings::values.resolution_info.ScaleUp(raw_width),
         .height = Settings::values.resolution_info.ScaleUp(raw_height),

src/video_core/renderer_vulkan/present/layer.h

@@ -70,7 +70,7 @@ private:
     void RefreshResources(const Device& device, const Tegra::FramebufferConfig& framebuffer);
     void SetAntiAliasPass(const Device& device);
 #ifdef HAS_RESHADE
-    void SetPostProcessPass(const Device& device);
+    void SetPostProcessPass(const Device& device, bool is_applet);
 #endif
     void ReleaseRawImages();
 

src/yuzu/main_window.cpp

@@ -3,6 +3,7 @@
 
 // Static Qt on macOS doesn't use Vulkan
 // Other platforms do, and thus have conflicting VulkanMemoryAllocator symbols
+#include "core/launch_params.h"
 #if defined(QT_STATICPLUGIN) && !defined(__APPLE__)
 #undef VMA_IMPLEMENTATION
 #endif
@@ -515,79 +516,28 @@ MainWindow::MainWindow(bool has_broken_vulkan)
     // to prevent the UI from blowing up.
     UpdateUITheme();
 
-    QStringList args = QApplication::arguments();
+    if (QStringList args = QApplication::arguments(); args.size() >= 2) {
+        QList<QByteArray> qba{};
+        for (auto const& e : args)
+            qba.push_back(e.toUtf8());
+        std::vector<char*> args_cstr{};
+        for (auto& e : qba)
+            args_cstr.push_back(e.data());
 
-    if (args.size() < 2) {
-        return;
-    }
+        auto const lp = Core::ParseLaunchParams(*QtCommon::system, args_cstr.size(), args_cstr.data(), nullptr);
 
-    QString game_path;
-    bool should_launch_qlaunch = false;
-    bool should_launch_hlaunch = false;
-    bool should_launch_setup = false;
-    bool has_gamepath = false;
-    bool is_fullscreen = false;
-
-    // Preserves drag/drop functionality
-    for (int i = 1; i < args.size(); ++i) {
-        if (args[i] == QStringLiteral("-f")) {
-            // Launch game in fullscreen mode
-            is_fullscreen = true;
-        } else if (args[i] == QStringLiteral("-u") && i < args.size() - 1) {
-            // Launch game with a specific user
-            int user_arg_idx = ++i;
-            bool argument_ok;
-            std::size_t selected_user = args[user_arg_idx].toUInt(&argument_ok);
-            if (!argument_ok) {
-                // try to look it up by username, only finds the first username that matches.
-                std::string const user_arg_str = args[user_arg_idx].toStdString();
-                auto const user_idx =
-                    QtCommon::system->GetProfileManager().GetUserIndex(user_arg_str);
-                if (user_idx != std::nullopt) {
-                    selected_user = user_idx.value();
-                } else {
-                    LOG_ERROR(Frontend, "Invalid user argument '{}'", user_arg_str);
-                    continue;
-                }
-            }
-            if (QtCommon::system->GetProfileManager().UserExistsIndex(selected_user)) {
-                Settings::values.current_user = s32(selected_user);
-                user_flag_cmd_line = true;
-            } else {
-                LOG_ERROR(Frontend, "Selected user {} doesn't exist", selected_user);
-            }
-        } else if (args[i] == QStringLiteral("-g") && i < args.size() - 1) {
-            // Launch game at path
-            game_path = args[++i];
-            has_gamepath = true;
-        } else if (args[i] == QStringLiteral("-input-profile") && i < args.size() - 1) {
-            auto& players = Settings::values.players.GetValue();
-            players[0].profile_name = args[++i].toStdString();
-        } else if (args[i] == QStringLiteral("-qlaunch")) {
-            should_launch_qlaunch = true;
-        } else if (args[i] == QStringLiteral("-hlaunch")) {
-            should_launch_hlaunch = true;
-        } else if (args[i] == QStringLiteral("-setup")) {
-            should_launch_setup = true;
-        } else {
-            game_path = args[i];
-            has_gamepath = true;
+        // Override fullscreen setting if gamepath or argument is provided
+        if (!lp.filepath.empty() || lp.fullscreen) {
+            ui->action_Fullscreen->setChecked(lp.fullscreen);
         }
-    }
 
-    // Override fullscreen setting if gamepath or argument is provided
-    if (has_gamepath || is_fullscreen) {
-        ui->action_Fullscreen->setChecked(is_fullscreen);
-    }
-
-    if (should_launch_setup) {
-        LaunchFirmwareApplet(u64(Service::AM::AppletProgramId::Starter), std::nullopt);
-    } else {
-        if (!game_path.isEmpty()) {
-            BootGame(game_path, ApplicationAppletParameters());
-        } else if (should_launch_qlaunch) {
+        if (!lp.filepath.empty()) {
+            BootGame(QString::fromStdString(lp.filepath), ApplicationAppletParameters());
+        } else if (lp.launch_setup) {
+            LaunchFirmwareApplet(u64(Service::AM::AppletProgramId::Starter), std::nullopt);
+        } else if (lp.launch_qlaunch) {
             LaunchFirmwareApplet(u64(Service::AM::AppletProgramId::QLaunch), std::nullopt);
-        } else if (should_launch_hlaunch) {
+        } else if (lp.launch_hlaunch) {
             std::filesystem::path const sd_dir =
                 Common::FS::GetEdenPathString(Common::FS::EdenPath::SDMCDir);
             auto const hbl_path = (sd_dir / "atmosphere" / "hbl.nsp").string();

src/yuzu_cmd/CMakeLists.txt

@@ -42,9 +42,6 @@ target_link_libraries(yuzu-cmd PRIVATE common core input_common frontend_common
 if (ENABLE_OPENGL)
     target_link_libraries(yuzu-cmd PRIVATE glad)
 endif()
-if (MSVC)
-    target_link_libraries(yuzu-cmd PRIVATE getopt)
-endif()
 target_link_libraries(yuzu-cmd PRIVATE ${PLATFORM_LIBRARIES} Threads::Threads)
 
 create_resource("../../dist/eden.bmp" "yuzu_cmd/yuzu_icon.h" "yuzu_icon")

src/yuzu_cmd/yuzu.cpp

@@ -10,6 +10,7 @@
 #include <regex>
 #include <string>
 #include "common/settings_enums.h"
+#include "core/launch_params.h"
 #ifdef __EMSCRIPTEN__
 #include <emscripten.h>
 #endif
@@ -52,12 +53,6 @@
 #include "common/windows/timer_resolution.h"
 #endif
 
-#undef _UNICODE
-#include <getopt.h>
-#ifndef _MSC_VER
-#include <unistd.h>
-#endif
-
 #ifdef _WIN32
 extern "C" {
 // tells Nvidia and AMD drivers to use the dedicated GPU by default on laptops with switchable
@@ -67,25 +62,6 @@ __declspec(dllexport) int AmdPowerXpressRequestHighPerformance = 1;
 }
 #endif
 
-static void PrintHelp(const char* argv0) {
-    std::cout << "Usage: " << argv0
-              << " [options] <filename>\n"
-                 "-c, --config          Load the specified configuration file\n"
-                 "-f, --fullscreen      Start in fullscreen mode\n"
-                 "-g, --game            File path of the game to load\n"
-                 "-h, --help            Display this help and exit\n"
-                 "-m, --multiplayer=nick:password@address:port"
-                 " Nickname, password, address and port for multiplayer\n"
-                 "-p, --program         Pass following string as arguments to executable\n"
-                 "-u, --user            Select a specific user profile from 0 to 7\n"
-                 "-d, --debug           Run the GDB stub on a port from 1 to 65535\n"
-                 "-v, --version         Output version information and exit\n";
-}
-
-static void PrintVersion() {
-    std::cout << "Eden " << Common::g_scm_branch << " " << Common::g_scm_desc << std::endl;
-}
-
 static void OnStateChanged(const Network::RoomMember::State& state) {
     switch (state) {
     case Network::RoomMember::State::Idle:
@@ -208,168 +184,18 @@ extern "C" SDL_AppResult SDL_AppInit(void **appstate, int argc, char **argv) {
         LOG_CRITICAL(Frontend, "Failed to get command line arguments");
         return SDL_APP_FAILURE;
     }
-#endif
-    std::string filepath;
-    std::optional<std::string> config_path{};
-    std::string program_args;
-    std::optional<int> selected_user{};
-    std::optional<u16> override_gdb_port{};
-    bool use_multiplayer = false;
-    bool fullscreen = false;
-    bool force_null_render = false;
-    bool force_single_core = false;
-    std::string nickname{};
-    std::string password{};
-    std::string address{};
-    std::string input_profile{};
-    std::optional<std::string> log_filter{};
-    u16 port = Network::DefaultRoomPort;
-
-    static struct option long_options[] = {
-        // clang-format off
-        {"debug", no_argument, 0, 'd'},
-        {"config", required_argument, 0, 'c'},
-        {"fullscreen", no_argument, 0, 'f'},
-        {"help", no_argument, 0, 'h'},
-        {"game", required_argument, 0, 'g'},
-        {"multiplayer", required_argument, 0, 'm'},
-        {"program", optional_argument, 0, 'p'},
-        {"user", required_argument, 0, 'u'},
-        {"version", no_argument, 0, 'v'},
-        {"input-profile", no_argument, 0, 'i'},
-        {"null-render", no_argument, 0, 'n'},
-        {"singlecore", no_argument, 0, 's'},
-        {"filter", no_argument, 0, 'x'},
-        {0, 0, 0, 0},
-        // clang-format on
-    };
-
-    while (optind < argc) {
-        int arg = getopt_long(argc, argv, "g:fhvcip::c:u:d:", long_options, &option_index);
-        if (arg != -1) {
-            switch (char(arg)) {
-            case 'd':
-                override_gdb_port = uint16_t(atoi(optarg));
-                break;
-            case 'c':
-                config_path = optarg;
-                break;
-            case 'f':
-                fullscreen = true;
-                LOG_INFO(Frontend, "Starting in fullscreen mode...");
-                break;
-            case 'h':
-                PrintHelp(argv[0]);
-                return SDL_APP_FAILURE;
-            case 'g':
-                filepath = std::string(optarg);
-                break;
-            case 'i': {
-                input_profile = std::string(optarg);
-                break;
-            }
-            case 'm': {
-                use_multiplayer = true;
-                const std::string str_arg(optarg);
-                // regex to check if the format is nickname:password@ip:port
-                // with optional :password
-                const std::regex re("^([^:]+)(?::(.+))?@([^:]+)(?::([0-9]+))?$");
-                if (!std::regex_match(str_arg, re)) {
-                    std::cout << "Wrong format for option --multiplayer\n";
-                    PrintHelp(argv[0]);
-                    return SDL_APP_FAILURE;
-                }
-
-                std::smatch match;
-                std::regex_search(str_arg, match, re);
-                ASSERT(match.size() == 5);
-                nickname = match[1];
-                password = match[2];
-                address = match[3];
-                if (!match[4].str().empty()) {
-                    port = u16(std::strtoul(match[4].str().c_str(), nullptr, 0));
-                }
-                std::regex nickname_re("^[a-zA-Z0-9._\\- ]+$");
-                if (!std::regex_match(nickname, nickname_re)) {
-                    LOG_ERROR(Frontend, "Nickname is not valid. Must be 4 to 20 alphanumeric characters");
-                    return SDL_APP_FAILURE;
-                }
-                if (address.empty()) {
-                    LOG_ERROR(Frontend, "Address to room must not be empty");
-                    return SDL_APP_FAILURE;
-                }
-                break;
-            }
-            case 'p':
-                program_args = argv[optind];
-                ++optind;
-                break;
-            case 'u':
-                selected_user = atoi(optarg);
-                break;
-            case 'v':
-                PrintVersion();
-                return SDL_APP_FAILURE;
-            case 'n':
-                force_null_render = true;
-                break;
-            case 's':
-                force_single_core = true;
-                break;
-            case 'x':
-                log_filter = argv[optind];
-                ++optind;
-                break;
-            }
-        } else {
-#ifdef _WIN32
-            filepath = Common::UTF16ToUTF8(argv_w[optind]);
 #else
-            filepath = argv[optind];
+    wchar_t **argv_w = nullptr;
 #endif
-            optind++;
-        }
-    }
-
-    SdlConfig config{config_path};
-
-    // apply the log_filter setting
-    // the logger was initialized before and doesn't pick up the filter on its own
-    Common::Log::Filter filter;
-    filter.ParseFilterString(log_filter.value_or(Settings::values.log_filter.GetValue()));
-    Common::Log::SetGlobalFilter(filter);
-
-    if (!program_args.empty()) {
-        Settings::values.program_args = program_args;
-    }
-
-    if (!input_profile.empty()) {
-        auto& players = Settings::values.players.GetValue();
-        players[0].profile_name = input_profile;
-    }
-
-    if (selected_user.has_value()) {
-        Settings::values.current_user = std::clamp(*selected_user, 0, 7);
-    }
-
-    if (override_gdb_port.has_value()) {
-        Settings::values.use_gdbstub = true;
-        Settings::values.gdbstub_port = *override_gdb_port;
-    }
-
-    if (force_single_core) {
-        Settings::values.use_multi_core = false;
-    }
-
-    if (force_null_render) {
-        Settings::values.renderer_backend = Settings::RendererBackend::Null;
-    }
-
+    Core::LaunchParams lp = Core::ParseLaunchParams(state->system, argc, argv, argv_w);
 #ifdef _WIN32
     LocalFree(argv_w);
 #endif
+    SdlConfig config{lp.config_path};
 
-    if (filepath.empty()) {
+    Core::ApplyLaunchParams(lp);
+
+    if (lp.filepath.empty()) {
         LOG_CRITICAL(Frontend, "Failed to load ROM: No ROM specified");
         return SDL_APP_FAILURE;
     }
@@ -386,14 +212,14 @@ extern "C" SDL_AppResult SDL_AppInit(void **appstate, int argc, char **argv) {
     case Settings::RendererBackend::OpenGL_GLSL:
     case Settings::RendererBackend::OpenGL_GLASM:
     case Settings::RendererBackend::OpenGL_SPIRV:
-        state->emu_window = std::make_unique<EmuWindow_SDL3_GL>(&input_subsystem, state->system, fullscreen);
+        state->emu_window = std::make_unique<EmuWindow_SDL3_GL>(&input_subsystem, state->system, lp.fullscreen);
         break;
 #endif
     case Settings::RendererBackend::Vulkan:
-        state->emu_window = std::make_unique<EmuWindow_SDL3_VK>(&input_subsystem, state->system, fullscreen);
+        state->emu_window = std::make_unique<EmuWindow_SDL3_VK>(&input_subsystem, state->system, lp.fullscreen);
         break;
     case Settings::RendererBackend::Null:
-        state->emu_window = std::make_unique<EmuWindow_SDL3_Null>(&input_subsystem, state->system, fullscreen);
+        state->emu_window = std::make_unique<EmuWindow_SDL3_Null>(&input_subsystem, state->system, lp.fullscreen);
         break;
     default:
         LOG_CRITICAL(Frontend, "Invalid renderer backend");
@@ -413,12 +239,12 @@ extern "C" SDL_AppResult SDL_AppInit(void **appstate, int argc, char **argv) {
     Service::AM::FrontendAppletParameters load_parameters{
         .applet_id = Service::AM::AppletId::Application,
     };
-    const Core::SystemResultStatus load_result = state->system.Load(*state->emu_window, filepath, load_parameters);
+    const Core::SystemResultStatus load_result = state->system.Load(*state->emu_window, lp.filepath, load_parameters);
     switch (load_result) {
     case Core::SystemResultStatus::Success:
         break; // Expected case
     case Core::SystemResultStatus::ErrorGetLoader:
-        LOG_CRITICAL(Frontend, "Failed to obtain loader for {}!", filepath);
+        LOG_CRITICAL(Frontend, "Failed to obtain loader for {}!", lp.filepath);
         return SDL_APP_FAILURE;
     case Core::SystemResultStatus::ErrorLoader:
         LOG_CRITICAL(Frontend, "Failed to load ROM!");
@@ -440,14 +266,14 @@ extern "C" SDL_AppResult SDL_AppInit(void **appstate, int argc, char **argv) {
         return SDL_APP_FAILURE;
     }
 
-    if (use_multiplayer) {
+    if (lp.use_multiplayer) {
         if (auto member = Network::GetRoomMember().lock()) {
             member->BindOnChatMessageReceived(OnMessageReceived);
             member->BindOnStatusMessageReceived(OnStatusMessageReceived);
             member->BindOnStateChanged(OnStateChanged);
             member->BindOnError(OnNetworkError);
-            LOG_DEBUG(Network, "Start connection to {}:{} with nickname {}", address, port, nickname);
-            member->Join(nickname, address.c_str(), port, 0, Network::NoPreferredIP, password);
+            LOG_DEBUG(Network, "Start connection to {}:{} with nickname {}", lp.address, lp.port, lp.nickname);
+            member->Join(lp.nickname, lp.address.c_str(), lp.port, 0, Network::NoPreferredIP, lp.password);
         } else {
             LOG_ERROR(Network, "Could not access RoomMember");
             return SDL_APP_FAILURE;