From 2726d705f8dde6d8fcbcfcd55e065a0598e10969 Mon Sep 17 00:00:00 2001 From: Morph Date: Sat, 20 Nov 2021 20:23:59 -0500 Subject: kernel: svc: Implement SetProcessMemoryPermission - Used by Skyline modding framework --- src/core/hle/kernel/svc.cpp | 42 +++++++++++++++++++++++++++++++++++++++++- 1 file changed, 41 insertions(+), 1 deletion(-) (limited to 'src/core/hle/kernel/svc.cpp') diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index f9d99bc51..23dc44780 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -1183,6 +1183,18 @@ constexpr bool IsValidRemoteSharedMemoryPermission(Svc::MemoryPermission perm) { return IsValidSharedMemoryPermission(perm) || perm == Svc::MemoryPermission::DontCare; } +constexpr bool IsValidProcessMemoryPermission(Svc::MemoryPermission perm) { + switch (perm) { + case Svc::MemoryPermission::None: + case Svc::MemoryPermission::Read: + case Svc::MemoryPermission::ReadWrite: + case Svc::MemoryPermission::ReadExecute: + return true; + default: + return false; + } +} + static ResultCode MapSharedMemory(Core::System& system, Handle shmem_handle, VAddr address, u64 size, Svc::MemoryPermission map_perm) { LOG_TRACE(Kernel_SVC, @@ -1262,6 +1274,34 @@ static ResultCode UnmapSharedMemory32(Core::System& system, Handle shmem_handle, return UnmapSharedMemory(system, shmem_handle, address, size); } +static ResultCode SetProcessMemoryPermission(Core::System& system, Handle process_handle, + VAddr address, u64 size, Svc::MemoryPermission perm) { + LOG_TRACE(Kernel_SVC, + "called, process_handle=0x{:X}, addr=0x{:X}, size=0x{:X}, permissions=0x{:08X}", + process_handle, address, size, perm); + + // Validate the address/size. + R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress); + R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize); + R_UNLESS(size > 0, ResultInvalidSize); + R_UNLESS((address < address + size), ResultInvalidCurrentMemory); + + // Validate the memory permission. + R_UNLESS(IsValidProcessMemoryPermission(perm), ResultInvalidNewMemoryPermission); + + // Get the process from its handle. + KScopedAutoObject process = + system.CurrentProcess()->GetHandleTable().GetObject(process_handle); + R_UNLESS(process.IsNotNull(), ResultInvalidHandle); + + // Validate that the address is in range. + auto& page_table = process->PageTable(); + R_UNLESS(page_table.Contains(address, size), ResultInvalidCurrentMemory); + + // Set the memory permission. + return page_table.SetProcessMemoryPermission(address, size, ConvertToKMemoryPermission(perm)); +} + static ResultCode QueryProcessMemory(Core::System& system, VAddr memory_info_address, VAddr page_info_address, Handle process_handle, VAddr address) { @@ -2588,7 +2628,7 @@ static const FunctionDef SVC_Table_64[] = { {0x70, nullptr, "CreatePort"}, {0x71, nullptr, "ManageNamedPort"}, {0x72, nullptr, "ConnectToPort"}, - {0x73, nullptr, "SetProcessMemoryPermission"}, + {0x73, SvcWrap64, "SetProcessMemoryPermission"}, {0x74, nullptr, "MapProcessMemory"}, {0x75, nullptr, "UnmapProcessMemory"}, {0x76, SvcWrap64, "QueryProcessMemory"}, -- cgit v1.2.3 From 5cf93c134684f7548572ff27131901f5909725fa Mon Sep 17 00:00:00 2001 From: Morph Date: Sat, 20 Nov 2021 21:54:46 -0500 Subject: kernel: svc: Move all IsValid functions to an anonymous namespace --- src/core/hle/kernel/svc.cpp | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) (limited to 'src/core/hle/kernel/svc.cpp') diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index 23dc44780..f0cd8471e 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -1169,6 +1169,8 @@ static u32 GetCurrentProcessorNumber32(Core::System& system) { return GetCurrentProcessorNumber(system); } +namespace { + constexpr bool IsValidSharedMemoryPermission(Svc::MemoryPermission perm) { switch (perm) { case Svc::MemoryPermission::Read: @@ -1179,7 +1181,7 @@ constexpr bool IsValidSharedMemoryPermission(Svc::MemoryPermission perm) { } } -constexpr bool IsValidRemoteSharedMemoryPermission(Svc::MemoryPermission perm) { +[[maybe_unused]] constexpr bool IsValidRemoteSharedMemoryPermission(Svc::MemoryPermission perm) { return IsValidSharedMemoryPermission(perm) || perm == Svc::MemoryPermission::DontCare; } @@ -1195,6 +1197,8 @@ constexpr bool IsValidProcessMemoryPermission(Svc::MemoryPermission perm) { } } +} // Anonymous namespace + static ResultCode MapSharedMemory(Core::System& system, Handle shmem_handle, VAddr address, u64 size, Svc::MemoryPermission map_perm) { LOG_TRACE(Kernel_SVC, @@ -1499,10 +1503,14 @@ static void ExitProcess32(Core::System& system) { ExitProcess(system); } -static constexpr bool IsValidVirtualCoreId(int32_t core_id) { +namespace { + +constexpr bool IsValidVirtualCoreId(int32_t core_id) { return (0 <= core_id && core_id < static_cast(Core::Hardware::NUM_CPU_CORES)); } +} // Anonymous namespace + /// Creates a new thread static ResultCode CreateThread(Core::System& system, Handle* out_handle, VAddr entry_point, u64 arg, VAddr stack_bottom, u32 priority, s32 core_id) { @@ -1886,7 +1894,9 @@ static ResultCode ResetSignal32(Core::System& system, Handle handle) { return ResetSignal(system, handle); } -static constexpr bool IsValidTransferMemoryPermission(MemoryPermission perm) { +namespace { + +constexpr bool IsValidTransferMemoryPermission(MemoryPermission perm) { switch (perm) { case MemoryPermission::None: case MemoryPermission::Read: @@ -1897,6 +1907,8 @@ static constexpr bool IsValidTransferMemoryPermission(MemoryPermission perm) { } } +} // Anonymous namespace + /// Creates a TransferMemory object static ResultCode CreateTransferMemory(Core::System& system, Handle* out, VAddr address, u64 size, MemoryPermission map_perm) { -- cgit v1.2.3 From 8aef8f39d86affd8fcc9a812d3d597f8eaee90b8 Mon Sep 17 00:00:00 2001 From: itsmeft24 Date: Sun, 5 Dec 2021 15:04:08 -0500 Subject: kernel: svc: Implement Map/UnmapProcessMemory and Create/ControlCodeMemory Used by Skyline modding framework --- src/core/hle/kernel/svc.cpp | 214 +++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 210 insertions(+), 4 deletions(-) (limited to 'src/core/hle/kernel/svc.cpp') diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index f0cd8471e..b37db918e 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -18,6 +18,7 @@ #include "core/core_timing.h" #include "core/hle/kernel/k_client_port.h" #include "core/hle/kernel/k_client_session.h" +#include "core/hle/kernel/k_code_memory.h" #include "core/hle/kernel/k_event.h" #include "core/hle/kernel/k_handle_table.h" #include "core/hle/kernel/k_memory_block.h" @@ -1197,6 +1198,22 @@ constexpr bool IsValidProcessMemoryPermission(Svc::MemoryPermission perm) { } } +constexpr bool IsValidMapCodeMemoryPermission(Svc::MemoryPermission perm) { + return perm == Svc::MemoryPermission::ReadWrite; +} + +constexpr bool IsValidMapToOwnerCodeMemoryPermission(Svc::MemoryPermission perm) { + return perm == Svc::MemoryPermission::Read || perm == Svc::MemoryPermission::ReadExecute; +} + +constexpr bool IsValidUnmapCodeMemoryPermission(Svc::MemoryPermission perm) { + return perm == Svc::MemoryPermission::None; +} + +constexpr bool IsValidUnmapFromOwnerCodeMemoryPermission(Svc::MemoryPermission perm) { + return perm == Svc::MemoryPermission::None; +} + } // Anonymous namespace static ResultCode MapSharedMemory(Core::System& system, Handle shmem_handle, VAddr address, @@ -1306,6 +1323,195 @@ static ResultCode SetProcessMemoryPermission(Core::System& system, Handle proces return page_table.SetProcessMemoryPermission(address, size, ConvertToKMemoryPermission(perm)); } +static ResultCode MapProcessMemory(Core::System& system, VAddr dst_address, Handle process_handle, + VAddr src_address, u64 size) { + LOG_TRACE(Kernel_SVC, + "called, dst_address=0x{:X}, process_handle=0x{:X}, src_address=0x{:X}, size=0x{:X}", + dst_address, process_handle, src_address, size); + + // Validate the address/size. + R_UNLESS(Common::IsAligned(dst_address, PageSize), ResultInvalidAddress); + R_UNLESS(Common::IsAligned(src_address, PageSize), ResultInvalidAddress); + R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize); + R_UNLESS(size > 0, ResultInvalidSize); + R_UNLESS((dst_address < dst_address + size), ResultInvalidCurrentMemory); + R_UNLESS((src_address < src_address + size), ResultInvalidCurrentMemory); + + // Get the processes. + KProcess* dst_process = system.CurrentProcess(); + KScopedAutoObject src_process = + dst_process->GetHandleTable().GetObjectWithoutPseudoHandle(process_handle); + R_UNLESS(src_process.IsNotNull(), ResultInvalidHandle); + + // Get the page tables. + auto& dst_pt = dst_process->PageTable(); + auto& src_pt = src_process->PageTable(); + + // Validate that the mapping is in range. + R_UNLESS(src_pt.Contains(src_address, size), ResultInvalidCurrentMemory); + R_UNLESS(dst_pt.CanContain(dst_address, size, KMemoryState::SharedCode), + ResultInvalidMemoryRegion); + + // Create a new page group. + KMemoryInfo kBlockInfo = dst_pt.QueryInfo(dst_address); + KPageLinkedList pg(kBlockInfo.GetAddress(), kBlockInfo.GetNumPages()); + + // Map the group. + R_TRY(dst_pt.MapPages(dst_address, pg, KMemoryState::SharedCode, + KMemoryPermission::UserReadWrite)); + + return ResultSuccess; +} + +static ResultCode UnmapProcessMemory(Core::System& system, VAddr dst_address, Handle process_handle, + VAddr src_address, u64 size) { + LOG_TRACE(Kernel_SVC, + "called, dst_address=0x{:X}, process_handle=0x{:X}, src_address=0x{:X}, size=0x{:X}", + dst_address, process_handle, src_address, size); + + // Validate the address/size. + R_UNLESS(Common::IsAligned(dst_address, PageSize), ResultInvalidAddress); + R_UNLESS(Common::IsAligned(src_address, PageSize), ResultInvalidAddress); + R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize); + R_UNLESS(size > 0, ResultInvalidSize); + R_UNLESS((dst_address < dst_address + size), ResultInvalidCurrentMemory); + R_UNLESS((src_address < src_address + size), ResultInvalidCurrentMemory); + + // Get the processes. + KProcess* dst_process = system.CurrentProcess(); + KScopedAutoObject src_process = + dst_process->GetHandleTable().GetObjectWithoutPseudoHandle(process_handle); + R_UNLESS(src_process.IsNotNull(), ResultInvalidHandle); + + // Get the page tables. + auto& dst_pt = dst_process->PageTable(); + auto& src_pt = src_process->PageTable(); + + // Validate that the mapping is in range. + R_UNLESS(src_pt.Contains(src_address, size), ResultInvalidCurrentMemory); + R_UNLESS(dst_pt.CanContain(dst_address, size, KMemoryState::SharedCode), + ResultInvalidMemoryRegion); + + // Unmap the memory. + R_TRY(dst_pt.UnmapProcessMemory(dst_address, size, src_pt, src_address)); + + return ResultSuccess; +} + +static ResultCode CreateCodeMemory(Core::System& system, Handle* out, VAddr address, size_t size) { + LOG_TRACE(Kernel_SVC, "called, handle_out=0x{:X}, address=0x{:X}, size=0x{:X}", + static_cast(out), address, size); + // Get kernel instance. + auto& kernel = system.Kernel(); + + // Validate address / size. + R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress); + R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize); + R_UNLESS(size > 0, ResultInvalidSize); + R_UNLESS((address < address + size), ResultInvalidCurrentMemory); + + // Create the code memory. + + KCodeMemory* code_mem = KCodeMemory::Create(kernel); + R_UNLESS(code_mem != nullptr, ResultOutOfResource); + + // Verify that the region is in range. + R_UNLESS(system.CurrentProcess()->PageTable().Contains(address, size), + ResultInvalidCurrentMemory); + + // Initialize the code memory. + R_TRY(code_mem->Initialize(system.DeviceMemory(), address, size)); + + // Register the code memory. + KCodeMemory::Register(kernel, code_mem); + + // Add the code memory to the handle table. + R_TRY(system.CurrentProcess()->GetHandleTable().Add(out, code_mem)); + + code_mem->Close(); + + return ResultSuccess; +} + +static ResultCode ControlCodeMemory(Core::System& system, Handle code_memory_handle, u32 operation, + VAddr address, size_t size, Svc::MemoryPermission perm) { + + LOG_TRACE(Kernel_SVC, + "called, code_memory_handle=0x{:X}, operation=0x{:X}, address=0x{:X}, size=0x{:X}, " + "permission=0x{:X}", + code_memory_handle, operation, address, size, perm); + + // Validate the address / size. + R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress); + R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize); + R_UNLESS(size > 0, ResultInvalidSize); + R_UNLESS((address < address + size), ResultInvalidCurrentMemory); + + // Get the code memory from its handle. + KScopedAutoObject code_mem = + system.CurrentProcess()->GetHandleTable().GetObject(code_memory_handle); + R_UNLESS(code_mem.IsNotNull(), ResultInvalidHandle); + + // NOTE: Here, Atmosphere extends the SVC to allow code memory operations on one's own process. + // This enables homebrew usage of these SVCs for JIT. + + // Perform the operation. + switch (static_cast(operation)) { + case CodeMemoryOperation::Map: { + // Check that the region is in range. + R_UNLESS( + system.CurrentProcess()->PageTable().CanContain(address, size, KMemoryState::CodeOut), + ResultInvalidMemoryRegion); + + // Check the memory permission. + R_UNLESS(IsValidMapCodeMemoryPermission(perm), ResultInvalidNewMemoryPermission); + + // Map the memory. + R_TRY(code_mem->Map(address, size)); + } break; + case CodeMemoryOperation::Unmap: { + // Check that the region is in range. + R_UNLESS( + system.CurrentProcess()->PageTable().CanContain(address, size, KMemoryState::CodeOut), + ResultInvalidMemoryRegion); + + // Check the memory permission. + R_UNLESS(IsValidUnmapCodeMemoryPermission(perm), ResultInvalidNewMemoryPermission); + + // Unmap the memory. + R_TRY(code_mem->Unmap(address, size)); + } break; + case CodeMemoryOperation::MapToOwner: { + // Check that the region is in range. + R_UNLESS(code_mem->GetOwner()->PageTable().CanContain(address, size, + KMemoryState::GeneratedCode), + ResultInvalidMemoryRegion); + + // Check the memory permission. + R_UNLESS(IsValidMapToOwnerCodeMemoryPermission(perm), ResultInvalidNewMemoryPermission); + + // Map the memory to its owner. + R_TRY(code_mem->MapToOwner(address, size, perm)); + } break; + case CodeMemoryOperation::UnmapFromOwner: { + // Check that the region is in range. + R_UNLESS(code_mem->GetOwner()->PageTable().CanContain(address, size, + KMemoryState::GeneratedCode), + ResultInvalidMemoryRegion); + + // Check the memory permission. + R_UNLESS(IsValidUnmapFromOwnerCodeMemoryPermission(perm), ResultInvalidNewMemoryPermission); + + // Unmap the memory from its owner. + R_TRY(code_mem->UnmapFromOwner(address, size)); + } break; + default: + return ResultInvalidEnumValue; + } + + return ResultSuccess; +} + static ResultCode QueryProcessMemory(Core::System& system, VAddr memory_info_address, VAddr page_info_address, Handle process_handle, VAddr address) { @@ -2600,8 +2806,8 @@ static const FunctionDef SVC_Table_64[] = { {0x48, nullptr, "MapPhysicalMemoryUnsafe"}, {0x49, nullptr, "UnmapPhysicalMemoryUnsafe"}, {0x4A, nullptr, "SetUnsafeLimit"}, - {0x4B, nullptr, "CreateCodeMemory"}, - {0x4C, nullptr, "ControlCodeMemory"}, + {0x4B, SvcWrap64, "CreateCodeMemory"}, + {0x4C, SvcWrap64, "ControlCodeMemory"}, {0x4D, nullptr, "SleepSystem"}, {0x4E, nullptr, "ReadWriteRegister"}, {0x4F, nullptr, "SetProcessActivity"}, @@ -2641,8 +2847,8 @@ static const FunctionDef SVC_Table_64[] = { {0x71, nullptr, "ManageNamedPort"}, {0x72, nullptr, "ConnectToPort"}, {0x73, SvcWrap64, "SetProcessMemoryPermission"}, - {0x74, nullptr, "MapProcessMemory"}, - {0x75, nullptr, "UnmapProcessMemory"}, + {0x74, SvcWrap64, "MapProcessMemory"}, + {0x75, SvcWrap64, "UnmapProcessMemory"}, {0x76, SvcWrap64, "QueryProcessMemory"}, {0x77, SvcWrap64, "MapProcessCodeMemory"}, {0x78, SvcWrap64, "UnmapProcessCodeMemory"}, -- cgit v1.2.3 From 669a2d2c67bd9a3267286bc0c2e6e3c1dc98c154 Mon Sep 17 00:00:00 2001 From: bunnei Date: Fri, 6 Aug 2021 22:45:18 -0700 Subject: core: hle: kernel: Reflect non-emulated threads as core 3. --- src/core/hle/kernel/svc.cpp | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'src/core/hle/kernel/svc.cpp') diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index f0cd8471e..e5e879eb5 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -873,7 +873,7 @@ static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, Handle const u64 thread_ticks = current_thread->GetCpuTime(); out_ticks = thread_ticks + (core_timing.GetCPUTicks() - prev_ctx_ticks); - } else if (same_thread && info_sub_id == system.CurrentCoreIndex()) { + } else if (same_thread && info_sub_id == system.Kernel().CurrentPhysicalCoreIndex()) { out_ticks = core_timing.GetCPUTicks() - prev_ctx_ticks; } @@ -887,7 +887,8 @@ static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, Handle return ResultInvalidHandle; } - if (info_sub_id != 0xFFFFFFFFFFFFFFFF && info_sub_id != system.CurrentCoreIndex()) { + if (info_sub_id != 0xFFFFFFFFFFFFFFFF && + info_sub_id != system.Kernel().CurrentPhysicalCoreIndex()) { LOG_ERROR(Kernel_SVC, "Core is not the current core, got {}", info_sub_id); return ResultInvalidCombination; } -- cgit v1.2.3 From 2f894560413db9bf8efc1febc26904937a28380f Mon Sep 17 00:00:00 2001 From: bunnei Date: Tue, 9 Nov 2021 19:21:20 -0800 Subject: hle: kernel: KThread: Remove tracking of sync object from threads. --- src/core/hle/kernel/svc.cpp | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'src/core/hle/kernel/svc.cpp') diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index e5e879eb5..50c6e513d 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -325,8 +325,7 @@ static ResultCode SendSyncRequest(Core::System& system, Handle handle) { } } - KSynchronizationObject* dummy{}; - return thread->GetWaitResult(std::addressof(dummy)); + return thread->GetWaitResult(); } static ResultCode SendSyncRequest32(Core::System& system, Handle handle) { -- cgit v1.2.3 From e942d9754028850ea1f6b223e4f1b8da7b13c1c4 Mon Sep 17 00:00:00 2001 From: bunnei Date: Tue, 9 Nov 2021 21:02:29 -0800 Subject: hle: kernel: KServerSession: Migrate to updated KThreadQueue. --- src/core/hle/kernel/svc.cpp | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) (limited to 'src/core/hle/kernel/svc.cpp') diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index 50c6e513d..0e79e1be3 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -31,6 +31,7 @@ #include "core/hle/kernel/k_shared_memory.h" #include "core/hle/kernel/k_synchronization_object.h" #include "core/hle/kernel/k_thread.h" +#include "core/hle/kernel/k_thread_queue.h" #include "core/hle/kernel/k_transfer_memory.h" #include "core/hle/kernel/k_writable_event.h" #include "core/hle/kernel/kernel.h" @@ -310,18 +311,24 @@ static ResultCode SendSyncRequest(Core::System& system, Handle handle) { auto& kernel = system.Kernel(); + // Create the wait queue. + KThreadQueue wait_queue(kernel); + auto thread = kernel.CurrentScheduler()->GetCurrentThread(); { KScopedSchedulerLock lock(kernel); - thread->SetState(ThreadState::Waiting); - thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::IPC); + + // This is a synchronous request, so we should wait for our request to complete. + GetCurrentThread(kernel).BeginWait(std::addressof(wait_queue)); + GetCurrentThread(kernel).SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::IPC); { KScopedAutoObject session = kernel.CurrentProcess()->GetHandleTable().GetObject(handle); R_UNLESS(session.IsNotNull(), ResultInvalidHandle); LOG_TRACE(Kernel_SVC, "called handle=0x{:08X}({})", handle, session->GetName()); - session->SendSyncRequest(thread, system.Memory(), system.CoreTiming()); + session->SendSyncRequest(&GetCurrentThread(kernel), system.Memory(), + system.CoreTiming()); } } -- cgit v1.2.3 From e3d156ab0e020ade2a96ae82eba226d5f187aa2e Mon Sep 17 00:00:00 2001 From: bunnei Date: Fri, 26 Nov 2021 15:35:11 -0800 Subject: hle: kernel: svc: Fix deadlock that can occur with single core. --- src/core/hle/kernel/svc.cpp | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) (limited to 'src/core/hle/kernel/svc.cpp') diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index 0e79e1be3..359cf515d 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -308,12 +308,18 @@ static ResultCode ConnectToNamedPort32(Core::System& system, Handle* out_handle, /// Makes a blocking IPC call to an OS service. static ResultCode SendSyncRequest(Core::System& system, Handle handle) { - auto& kernel = system.Kernel(); // Create the wait queue. KThreadQueue wait_queue(kernel); + // Get the client session from its handle. + KScopedAutoObject session = + kernel.CurrentProcess()->GetHandleTable().GetObject(handle); + R_UNLESS(session.IsNotNull(), ResultInvalidHandle); + + LOG_TRACE(Kernel_SVC, "called handle=0x{:08X}({})", handle, session->GetName()); + auto thread = kernel.CurrentScheduler()->GetCurrentThread(); { KScopedSchedulerLock lock(kernel); @@ -321,15 +327,7 @@ static ResultCode SendSyncRequest(Core::System& system, Handle handle) { // This is a synchronous request, so we should wait for our request to complete. GetCurrentThread(kernel).BeginWait(std::addressof(wait_queue)); GetCurrentThread(kernel).SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::IPC); - - { - KScopedAutoObject session = - kernel.CurrentProcess()->GetHandleTable().GetObject(handle); - R_UNLESS(session.IsNotNull(), ResultInvalidHandle); - LOG_TRACE(Kernel_SVC, "called handle=0x{:08X}({})", handle, session->GetName()); - session->SendSyncRequest(&GetCurrentThread(kernel), system.Memory(), - system.CoreTiming()); - } + session->SendSyncRequest(&GetCurrentThread(kernel), system.Memory(), system.CoreTiming()); } return thread->GetWaitResult(); -- cgit v1.2.3