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Core/Memory: Give every emulated thread it's own TLS area.
The TLS area for thread T with id Ti is located at TLS_AREA_VADDR + (Ti - 1) * 0x200. This allows some games like Mario Kart 7 to continue further.
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8 changed files with 31 additions and 11 deletions
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@ -99,8 +99,9 @@ public:
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* @param stack_top Pointer to the top of the stack
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* @param entry_point Entry point for execution
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* @param arg User argument for thread
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* @param tls_address Address of the Thread Local Storage for the thread
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*/
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virtual void ResetContext(Core::ThreadContext& context, u32 stack_top, u32 entry_point, u32 arg) = 0;
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virtual void ResetContext(Core::ThreadContext& context, u32 stack_top, u32 entry_point, u32 arg, u32 tls_address) = 0;
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/**
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* Saves the current CPU context
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@ -90,13 +90,14 @@ void ARM_DynCom::ExecuteInstructions(int num_instructions) {
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AddTicks(ticks_executed);
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}
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void ARM_DynCom::ResetContext(Core::ThreadContext& context, u32 stack_top, u32 entry_point, u32 arg) {
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void ARM_DynCom::ResetContext(Core::ThreadContext& context, u32 stack_top, u32 entry_point, u32 arg, u32 tls_address) {
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memset(&context, 0, sizeof(Core::ThreadContext));
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context.cpu_registers[0] = arg;
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context.pc = entry_point;
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context.sp = stack_top;
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context.cpsr = 0x1F; // Usermode
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context.tls = tls_address;
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}
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void ARM_DynCom::SaveContext(Core::ThreadContext& ctx) {
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@ -123,6 +124,8 @@ void ARM_DynCom::LoadContext(const Core::ThreadContext& ctx) {
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state->VFP[1] = ctx.fpscr;
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state->VFP[2] = ctx.fpexc;
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SetCP15Register(CP15_THREAD_URO, ctx.tls);
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}
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void ARM_DynCom::PrepareReschedule() {
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@ -27,7 +27,7 @@ public:
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void AddTicks(u64 ticks) override;
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void ResetContext(Core::ThreadContext& context, u32 stack_top, u32 entry_point, u32 arg) override;
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void ResetContext(Core::ThreadContext& context, u32 stack_top, u32 entry_point, u32 arg, u32 tls_address) override;
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void SaveContext(Core::ThreadContext& ctx) override;
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void LoadContext(const Core::ThreadContext& ctx) override;
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@ -61,10 +61,6 @@ int Init() {
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g_sys_core = new ARM_DynCom(USER32MODE);
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g_app_core = new ARM_DynCom(USER32MODE);
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// TODO: Whenever TLS is implemented, this should contain
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// the address of the 0x200-byte TLS
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g_app_core->SetCP15Register(CP15_THREAD_URO, Memory::TLS_AREA_VADDR);
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LOG_DEBUG(Core, "Initialized OK");
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return 0;
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}
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@ -21,6 +21,8 @@ struct ThreadContext {
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u32 fpu_registers[32];
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u32 fpscr;
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u32 fpexc;
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u32 tls;
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};
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extern ARM_Interface* g_app_core; ///< ARM11 application core
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@ -5,6 +5,7 @@
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#pragma once
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#include "core/hle/kernel/kernel.h"
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#include "core/hle/kernel/thread.h"
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#include "core/mem_map.h"
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namespace Kernel {
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@ -12,12 +13,15 @@ namespace Kernel {
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static const int kCommandHeaderOffset = 0x80; ///< Offset into command buffer of header
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/**
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* Returns a pointer to the command buffer in kernel memory
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* Returns a pointer to the command buffer in the current thread's TLS
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* TODO(Subv): This is not entirely correct, the command buffer should be copied from
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* the thread's TLS to an intermediate buffer in kernel memory, and then copied again to
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* the service handler process' memory.
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* @param offset Optional offset into command buffer
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* @return Pointer to command buffer
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*/
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inline static u32* GetCommandBuffer(const int offset=0) {
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return (u32*)Memory::GetPointer(Memory::TLS_AREA_VADDR + kCommandHeaderOffset + offset);
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inline static u32* GetCommandBuffer(const int offset = 0) {
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return (u32*)Memory::GetPointer(GetCurrentThread()->GetTLSAddress() + kCommandHeaderOffset + offset);
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}
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/**
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@ -402,9 +402,13 @@ ResultVal<SharedPtr<Thread>> Thread::Create(std::string name, VAddr entry_point,
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thread->name = std::move(name);
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thread->callback_handle = wakeup_callback_handle_table.Create(thread).MoveFrom();
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VAddr tls_address = Memory::TLS_AREA_VADDR + (thread->thread_id - 1) * 0x200;
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ASSERT_MSG(tls_address < Memory::TLS_AREA_VADDR_END, "Too many threads");
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// TODO(peachum): move to ScheduleThread() when scheduler is added so selected core is used
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// to initialize the context
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Core::g_app_core->ResetContext(thread->context, stack_top, entry_point, arg);
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Core::g_app_core->ResetContext(thread->context, stack_top, entry_point, arg, tls_address);
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ready_queue.push_back(thread->current_priority, thread.get());
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thread->status = THREADSTATUS_READY;
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@ -495,6 +499,10 @@ void Thread::SetWaitSynchronizationOutput(s32 output) {
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context.cpu_registers[1] = output;
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}
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VAddr Thread::GetTLSAddress() const {
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return context.tls;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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void ThreadingInit() {
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@ -135,6 +135,12 @@ public:
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*/
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void Stop();
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/*
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* Returns the Thread Local Storage address of the current thread
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* @returns VAddr of the thread's TLS
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*/
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VAddr GetTLSAddress() const;
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Core::ThreadContext context;
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u32 thread_id;
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