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https://github.com/yuzu-emu/yuzu.git
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Merge pull request #741 from Subv/tls
Give each emulated thread it's own TLS memory
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commit
2a19de1d09
@ -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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@ -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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@ -197,6 +197,7 @@ static void SwitchContext(Thread* new_thread) {
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new_thread->current_priority = new_thread->nominal_priority;
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Core::g_app_core->LoadContext(new_thread->context);
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Core::g_app_core->SetCP15Register(CP15_THREAD_URO, new_thread->GetTLSAddress());
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} else {
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current_thread = nullptr;
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}
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@ -402,6 +403,12 @@ 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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thread->tls_address = tls_address;
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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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@ -495,6 +502,10 @@ 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 tls_address;
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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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@ -150,6 +156,8 @@ public:
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s32 processor_id;
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VAddr tls_address; ///< Address of the Thread Local Storage of the thread
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/// Mutexes currently held by this thread, which will be released when it exits.
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boost::container::flat_set<SharedPtr<Mutex>> held_mutexes;
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