Switch 2: window image sizes, queue semaphores, built-in fonts, memory budget

- gsv 1510 CalculateRequirements: block-linear size/alignment for window images.
- nvhost-gpu: Switch 2 channel event 7 is a real (unsignalled) event.
- Puller mirrors NVN2 queue semaphore releases into the page the CPU and GPU
  wait on (the first two-page nx2:gpu region); EDEN_NX2_METHOD_TRACE logs methods.
- pl:u 2000/2010 GetBuiltInFontSharedMemory/GetBuiltInFontData serve plain TTF
  copies of the shared fonts.
- Switch 2 processes count the alias region in their max memory, so the game's
  nninitStartup heap (total - 6.3 GiB) has room for its sound heap.
- gdbrsp.py: interrupt, threads, selthread, hits, continue_async, sleep.

8 files changed, 122 insertions, 0 deletions

diff --git a/src/core/file_sys/program_metadata.cpp b/src/core/file_sys/program_metadata.cpp
index ad09b19e68..464e496ea3 100644
--- a/src/core/file_sys/program_metadata.cpp
+++ b/src/core/file_sys/program_metadata.cpp
@@ -47,6 +47,7 @@ Loader::ResultStatus ProgramMetadata::Load(VirtualFile file) {
             return Loader::ResultStatus::ErrorBadACIDHeader;
         }
         LOG_INFO(Loader, "NPDM uses the Switch 2 ACID layout");
+        is_switch2 = true;
     }
 
     if (sizeof(AciHeader) != file->ReadObject(&aci_header, npdm_header.aci_offset)) {
diff --git a/src/core/file_sys/program_metadata.h b/src/core/file_sys/program_metadata.h
index 115e6d6cd1..5ce32af1a4 100644
--- a/src/core/file_sys/program_metadata.h
+++ b/src/core/file_sys/program_metadata.h
@@ -72,6 +72,10 @@ public:
                     KernelCapabilityDescriptors capabilities);
 
     bool Is64BitProgram() const;
+    /// True when the NPDM uses the Switch 2 ACID layout.
+    bool IsSwitch2() const {
+        return is_switch2;
+    }
     ProgramAddressSpaceType GetAddressSpaceType() const;
     u8 GetMainThreadPriority() const;
     u8 GetMainThreadCore() const;
@@ -179,6 +183,7 @@ private:
     Header npdm_header{};
     AciHeader aci_header{};
     AcidHeader acid_header{};
+    bool is_switch2{};
 
     FileAccessControl acid_file_access{};
     FileAccessHeader aci_file_access{};
diff --git a/src/core/hle/kernel/k_process.cpp b/src/core/hle/kernel/k_process.cpp
index 27d1b1bfc4..4aac818b77 100644
--- a/src/core/hle/kernel/k_process.cpp
+++ b/src/core/hle/kernel/k_process.cpp
@@ -1261,6 +1261,13 @@ Result KProcess::LoadFromMetadata(KernelCore& kernel, const FileSys::ProgramMeta
     // Assign remaining properties.
     m_ideal_core_id = metadata.GetMainThreadCore();
 
+    // Switch 2 applications get more memory than a 64-bit heap region holds (nninitStartup sizes
+    // its heap as total memory minus ~6.3 GiB), so count the alias region as well, bounded by the
+    // pool through the resource limit.
+    if (metadata.IsSwitch2()) {
+        m_max_process_memory = m_page_table.GetHeapRegionSize() + m_page_table.GetAliasRegionSize();
+    }
+
     // Set up emulation context.
     this->InitializeInterfaces(kernel);
 
diff --git a/src/core/hle/service/ns/platform_service_manager.cpp b/src/core/hle/service/ns/platform_service_manager.cpp
index bf93a2edfa..88aac56b1c 100644
--- a/src/core/hle/service/ns/platform_service_manager.cpp
+++ b/src/core/hle/service/ns/platform_service_manager.cpp
@@ -22,7 +22,9 @@
 #include "core/hle/kernel/k_shared_memory.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/service/cmif_serialization.h"
+#include "common/alignment.h"
 #include "core/hle/service/filesystem/filesystem.h"
+#include "core/hle/service/ipc_helpers.h"
 #include "core/hle/service/ns/platform_service_manager.h"
 
 namespace Service::NS {
@@ -83,6 +85,8 @@ struct IPlatformServiceManager::Impl {
     // Automatically populated based on shared_fonts dump or system archives.
     // 6 builtin fonts + extra 2 for whatever may come after
     boost::container::static_vector<FontRegion, 8> shared_font_regions;
+    /// Plain TTF copies of the same fonts (Switch 2 GetBuiltInFontData), after the BFTTF data.
+    boost::container::static_vector<FontRegion, 8> builtin_font_regions;
     /// Backing memory for the shared font data
     std::array<u8, SHARED_FONT_MEM_SIZE> shared_font;
 };
@@ -107,6 +111,8 @@ IPlatformServiceManager::IPlatformServiceManager(Core::System& system_, const ch
         {106, nullptr, "GetFunctionBlackListVersion"},
         {1000, nullptr, "LoadNgWordDataForPlatformRegionChina"},
         {1001, nullptr, "GetNgWordDataSizeForPlatformRegionChina"},
+        {2000, &IPlatformServiceManager::GetBuiltInFontSharedMemory, "GetBuiltInFontSharedMemory (Switch 2)"},
+        {2010, &IPlatformServiceManager::GetBuiltInFontData, "GetBuiltInFontData (Switch 2)"},
     };
     // clang-format on
     RegisterHandlers(functions);
@@ -116,6 +122,7 @@ IPlatformServiceManager::IPlatformServiceManager(Core::System& system_, const ch
     // Attempt to load shared font data from disk
     const auto* nand = fsc.GetSystemNANDContents();
     std::size_t offset = 0;
+    std::vector<std::vector<u8>> plain_fonts;
     // Rebuild shared fonts from data ncas or synthesize
     for (auto& font : SHARED_FONTS) {
         FileSys::VirtualFile romfs;
@@ -151,9 +158,58 @@ IPlatformServiceManager::IPlatformServiceManager(Core::System& system_, const ch
                        Common::swap32);
         // Font offset and size do not account for the header
         const FontRegion region{u32(offset + 8), u32((font_data_u32.size() * sizeof(u32)) - 8)};
+        std::vector<u8> plain(region.size);
+        DecryptSharedFontToTTF(font_data_u32, plain);
+        plain_fonts.push_back(std::move(plain));
         DecryptSharedFont(font_data_u32, impl->shared_font, offset);
         impl->shared_font_regions.push_back(region);
     }
+
+    for (const auto& plain : plain_fonts) {
+        offset = Common::AlignUp(offset, 0x1000);
+        if (offset + plain.size() > SHARED_FONT_MEM_SIZE) {
+            LOG_WARNING(Service_NS, "No shared memory left for plain built-in font copies");
+            break;
+        }
+        std::memcpy(impl->shared_font.data() + offset, plain.data(), plain.size());
+        impl->builtin_font_regions.push_back({u32(offset), u32(plain.size())});
+        offset += plain.size();
+    }
+}
+
+// Switch 2: the shared memory GetBuiltInFontData offsets point into (copy handle, u32 size); the
+// SDK maps it read-only. Eden serves its font shared memory, which holds plain copies too.
+void IPlatformServiceManager::GetBuiltInFontSharedMemory(HLERequestContext& ctx) {
+    LOG_WARNING(Service_NS, "(STUBBED) Switch 2 GetBuiltInFontSharedMemory");
+    std::memcpy(kernel.GetFontSharedMem().GetPointer(), impl->shared_font.data(), impl->shared_font.size());
+    IPC::ResponseBuilder rb{ctx, 3, 1};
+    rb.Push(ResultSuccess);
+    rb.Push<u32>(static_cast<u32>(SHARED_FONT_MEM_SIZE));
+    rb.PushCopyObjects(ctx, kernel.GetFontSharedMem());
+}
+
+// nn::pl::GetBuiltInFontData(BuiltInFontDataOunce*, BuiltInFontTypeOunce, bool): returns a 16-byte
+// bool that says whether the font exists and a 16-byte descriptor (u8 flags, u8 flag bit, u16,
+// u32 offset into the font shared memory, u32 size, u32). The client expects plain TrueType/OpenType data
+// there. The type numbering is unknown, so types map onto Eden's shared fonts in order.
+void IPlatformServiceManager::GetBuiltInFontData(HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+    const u32 type = rp.Pop<u32>();
+    const bool flag = rp.Pop<u8>() != 0;
+    const auto& regions = impl->builtin_font_regions;
+    const bool found = !regions.empty();
+    const FontRegion region = found ? regions[std::min<size_t>(type, regions.size() - 1)] : EMPTY_REGION;
+    LOG_WARNING(Service_NS, "(STUBBED) Switch 2 GetBuiltInFontData type={} flag={} -> offset={:#x} size={:#x}",
+                type, flag, region.offset, region.size);
+    // Raw reply: the bool at offset 0, the descriptor at offset 8.
+    IPC::ResponseBuilder rb{ctx, 2 + 6};
+    rb.Push(ResultSuccess);
+    rb.Push<u32>(found ? 1 : 0);
+    rb.Push<u32>(0);
+    rb.Push<u32>(0);
+    rb.Push<u32>(region.offset);
+    rb.Push<u32>(region.size);
+    rb.Push<u32>(0);
 }
 
 IPlatformServiceManager::~IPlatformServiceManager() = default;
diff --git a/src/core/hle/service/ns/platform_service_manager.h b/src/core/hle/service/ns/platform_service_manager.h
index 73521abbc2..ed5b1c1e39 100644
--- a/src/core/hle/service/ns/platform_service_manager.h
+++ b/src/core/hle/service/ns/platform_service_manager.h
@@ -73,6 +73,9 @@ private:
                                           Out<bool> out_fonts_are_loaded, Out<u32> out_font_count,
                                           Set::LanguageCode language_code);
 
+    void GetBuiltInFontSharedMemory(HLERequestContext& ctx);
+    void GetBuiltInFontData(HLERequestContext& ctx);
+
     struct Impl;
     std::unique_ptr<Impl> impl;
 };
diff --git a/src/core/hle/service/nvdrv/devices/nvhost_gpu.cpp b/src/core/hle/service/nvdrv/devices/nvhost_gpu.cpp
index b650d3cac8..a72ccd9b4f 100644
--- a/src/core/hle/service/nvdrv/devices/nvhost_gpu.cpp
+++ b/src/core/hle/service/nvdrv/devices/nvhost_gpu.cpp
@@ -49,6 +49,9 @@ nvhost_gpu::~nvhost_gpu() {
     events_interface.FreeEvent(sm_exception_breakpoint_int_report_event);
     events_interface.FreeEvent(sm_exception_breakpoint_pause_report_event);
     events_interface.FreeEvent(error_notifier_event);
+    for (auto& [id, event] : nx2_events) {
+        events_interface.FreeEvent(event);
+    }
     syncpoint_manager.FreeSyncpoint(channel_syncpoint);
 }
 
@@ -543,6 +546,16 @@ Kernel::KEvent* nvhost_gpu::QueryEvent(u32 event_id) {
     case 3:
         return error_notifier_event;
     default:
+        if (g_nx2_driver) {
+            // Switch 2 NVN also asks for event 7 and multi-waits on it with its syncpoint events.
+            // Nothing signals it yet.
+            auto*& event = nx2_events[event_id];
+            if (event == nullptr) {
+                event = events_interface.CreateEvent(fmt::format("GpuChannelNx2Event{}", event_id));
+            }
+            LOG_WARNING(Service_NVDRV, "(STUBBED) Switch 2 channel event {}", event_id);
+            return event;
+        }
         LOG_CRITICAL(Service_NVDRV, "Unknown Ctrl GPU Event {}", event_id);
         return nullptr;
     }
diff --git a/src/core/hle/service/nvdrv/devices/nvhost_gpu.h b/src/core/hle/service/nvdrv/devices/nvhost_gpu.h
index 70a6b1bd68..ab968d6c7e 100644
--- a/src/core/hle/service/nvdrv/devices/nvhost_gpu.h
+++ b/src/core/hle/service/nvdrv/devices/nvhost_gpu.h
@@ -6,6 +6,7 @@
 
 #pragma once
 
+#include <map>
 #include <memory>
 #include <vector>
 #include "common/bit_field.h"
@@ -225,6 +226,7 @@ private:
     Kernel::KEvent* sm_exception_breakpoint_int_report_event;
     Kernel::KEvent* sm_exception_breakpoint_pause_report_event;
     Kernel::KEvent* error_notifier_event;
+    std::map<u32, Kernel::KEvent*> nx2_events;
 };
 
 } // namespace Service::Nvidia::Devices
diff --git a/src/core/hle/service/nx2_gsv.h b/src/core/hle/service/nx2_gsv.h
index ef222befca..9d1a4cdc93 100644
--- a/src/core/hle/service/nx2_gsv.h
+++ b/src/core/hle/service/nx2_gsv.h
@@ -9,6 +9,7 @@
 #include <map>
 #include <vector>
 
+#include "common/alignment.h"
 #include "core/core.h"
 #include "core/core_timing.h"
 #include "core/hle/kernel/k_client_session.h"
@@ -21,6 +22,7 @@
 #include "core/hle/kernel/k_transfer_memory.h"
 #include "core/memory.h"
 #include "video_core/host1x/host1x.h"
+#include "video_core/nx2.h"
 #include "core/hle/service/hle_ipc.h"
 #include "core/hle/service/ipc_helpers.h"
 #include "core/hle/service/kernel_helpers.h"
@@ -291,6 +293,14 @@ private:
                     last, b[6], b[7]);
         if (last > start) {
             Nvidia::Devices::Nx2GpuMemoryRegistry::Get().Register(start, last - start + 1);
+            // The first two-page region holds the queue semaphores: GPU releases go to the second
+            // page, waits read the first (see video_core/nx2.h).
+            if (last - start + 1 == 0x2000 && Tegra::g_nx2_semaphore_source_page == 0) {
+                Tegra::g_nx2_semaphore_mirror_page = start;
+                Tegra::g_nx2_semaphore_source_page = start + 0x1000;
+                LOG_WARNING(Service, "nx2:gpu semaphore page {:#x} mirrored to {:#x}",
+                            start + 0x1000, start);
+            }
         }
         IPC::ResponseBuilder rb{ctx, 2};
         rb.Push(ResultSuccess);
@@ -376,6 +386,7 @@ public:
             {305, &INx2GraphicsSystemSession::OpenViSession, "OpenViSession (guessed)"},
             {497, &INx2GraphicsSystemSession::OpenGpuSession, "OpenGpuSession (guessed)"},
             {1402, &INx2GraphicsSystemSession::OpenNvsrvSession, "OpenNvsrvSession (guessed)"},
+            {1510, &INx2GraphicsSystemSession::CalculateRequirements, "CalculateRequirements"},
         });
     }
 
@@ -522,6 +533,30 @@ private:
         }
     }
 
+    // nn::gsv::shim::CalculateRequirements(u64* size, u64* alignment, preference, u32): the 0x40-byte
+    // InterModuleUserImagePreference (words 2..17) and a u32 (word 18). A block-linear preference
+    // (MakeInterModuleBlockUserImagePreference) holds kind 2 at word 3, (width - 1) | (height - 1)
+    // << 16 at word 4, two u32s at words 6-7 and the pixel format at word 8. Reply: result, u64
+    // size, u64 alignment; the client raises the alignment to at least 4 KiB and rounds the size.
+    void CalculateRequirements(HLERequestContext& ctx) {
+        const auto* w = ctx.CommandBuffer();
+        const u32 width = (w[4] & 0xFFFF) + 1;
+        const u32 height = (w[4] >> 16) + 1;
+        const u32 pixel_format = w[8] & 0xFF;
+        // Pixel format numbering is unknown; 4 bytes per pixel. Oversizing (8 for format 4) left
+        // the game's 1.5 GiB heap short of its 300 MiB sound heap.
+        const u64 bytes_per_pixel = 4;
+        const u64 pitch = Common::AlignUp(width * bytes_per_pixel, 64);
+        const u64 size = pitch * Common::AlignUp(height, 128);
+        constexpr u64 alignment = 0x10000;
+        LOG_WARNING(Service,
+                    "(STUBBED) nx2:gsv TIPC 1510 kind={} {}x{} [6]={:#x} [7]={:#x} format={} "
+                    "[9]={:#x} [18]={:#x} -> size={:#x}",
+                    w[3], width, height, w[6], w[7], pixel_format, w[9], w[18], size);
+        TipcReplyWords(ctx, {static_cast<u32>(size), static_cast<u32>(size >> 32),
+                             static_cast<u32>(alignment), 0});
+    }
+
     void OpenViSession(HLERequestContext& ctx) {
         // Used by nn::vi2::sdk::Initialize; takes one u64, returns a session (handle at word 3,
         // result at word 4).