diff options
Diffstat (limited to 'src/core/hle/kernel/svc.cpp')
-rw-r--r-- | src/core/hle/kernel/svc.cpp | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index b76280456..1cdaa740a 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -415,8 +415,36 @@ static ResultCode SetThreadActivity(Handle handle, u32 unknown) { } /// Gets the thread context -static ResultCode GetThreadContext(Handle handle, VAddr addr) { - LOG_WARNING(Kernel_SVC, "(STUBBED) called, handle=0x{:08X}, addr=0x{:X}", handle, addr); +static ResultCode GetThreadContext(VAddr thread_context, Handle handle) { + LOG_DEBUG(Kernel_SVC, "called, context=0x{:08X}, thread=0x{:X}", thread_context, handle); + + auto& kernel = Core::System::GetInstance().Kernel(); + const SharedPtr<Thread> thread = kernel.HandleTable().Get<Thread>(handle); + if (!thread) { + return ERR_INVALID_HANDLE; + } + + const auto current_process = Core::CurrentProcess(); + if (thread->owner_process != current_process) { + return ERR_INVALID_HANDLE; + } + + if (thread == GetCurrentThread()) { + return ERR_ALREADY_REGISTERED; + } + + Core::ARM_Interface::ThreadContext ctx = thread->context; + // Mask away mode bits, interrupt bits, IL bit, and other reserved bits. + ctx.pstate &= 0xFF0FFE20; + + // If 64-bit, we can just write the context registers directly and we're good. + // However, if 32-bit, we have to ensure some registers are zeroed out. + if (!current_process->Is64BitProcess()) { + std::fill(ctx.cpu_registers.begin() + 15, ctx.cpu_registers.end(), 0); + std::fill(ctx.vector_registers.begin() + 16, ctx.vector_registers.end(), u128{}); + } + + Memory::WriteBlock(thread_context, &ctx, sizeof(ctx)); return RESULT_SUCCESS; } |