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Merge pull request #741 from Subv/tls

Give each emulated thread it's own TLS memory
This commit is contained in:
Lioncash 2015-05-10 20:50:23 -04:00
commit 2a19de1d09
4 changed files with 26 additions and 7 deletions

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@ -61,10 +61,6 @@ int Init() {
g_sys_core = new ARM_DynCom(USER32MODE);
g_app_core = new ARM_DynCom(USER32MODE);
// TODO: Whenever TLS is implemented, this should contain
// the address of the 0x200-byte TLS
g_app_core->SetCP15Register(CP15_THREAD_URO, Memory::TLS_AREA_VADDR);
LOG_DEBUG(Core, "Initialized OK");
return 0;
}

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@ -5,6 +5,7 @@
#pragma once
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/thread.h"
#include "core/mem_map.h"
namespace Kernel {
@ -12,12 +13,15 @@ namespace Kernel {
static const int kCommandHeaderOffset = 0x80; ///< Offset into command buffer of header
/**
* Returns a pointer to the command buffer in kernel memory
* Returns a pointer to the command buffer in the current thread's TLS
* TODO(Subv): This is not entirely correct, the command buffer should be copied from
* the thread's TLS to an intermediate buffer in kernel memory, and then copied again to
* the service handler process' memory.
* @param offset Optional offset into command buffer
* @return Pointer to command buffer
*/
inline static u32* GetCommandBuffer(const int offset=0) {
return (u32*)Memory::GetPointer(Memory::TLS_AREA_VADDR + kCommandHeaderOffset + offset);
inline static u32* GetCommandBuffer(const int offset = 0) {
return (u32*)Memory::GetPointer(GetCurrentThread()->GetTLSAddress() + kCommandHeaderOffset + offset);
}
/**

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@ -197,6 +197,7 @@ static void SwitchContext(Thread* new_thread) {
new_thread->current_priority = new_thread->nominal_priority;
Core::g_app_core->LoadContext(new_thread->context);
Core::g_app_core->SetCP15Register(CP15_THREAD_URO, new_thread->GetTLSAddress());
} else {
current_thread = nullptr;
}
@ -402,6 +403,12 @@ ResultVal<SharedPtr<Thread>> Thread::Create(std::string name, VAddr entry_point,
thread->name = std::move(name);
thread->callback_handle = wakeup_callback_handle_table.Create(thread).MoveFrom();
VAddr tls_address = Memory::TLS_AREA_VADDR + (thread->thread_id - 1) * 0x200;
ASSERT_MSG(tls_address < Memory::TLS_AREA_VADDR_END, "Too many threads");
thread->tls_address = tls_address;
// TODO(peachum): move to ScheduleThread() when scheduler is added so selected core is used
// to initialize the context
Core::g_app_core->ResetContext(thread->context, stack_top, entry_point, arg);
@ -495,6 +502,10 @@ void Thread::SetWaitSynchronizationOutput(s32 output) {
context.cpu_registers[1] = output;
}
VAddr Thread::GetTLSAddress() const {
return tls_address;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
void ThreadingInit() {

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@ -135,6 +135,12 @@ public:
*/
void Stop();
/*
* Returns the Thread Local Storage address of the current thread
* @returns VAddr of the thread's TLS
*/
VAddr GetTLSAddress() const;
Core::ThreadContext context;
u32 thread_id;
@ -150,6 +156,8 @@ public:
s32 processor_id;
VAddr tls_address; ///< Address of the Thread Local Storage of the thread
/// Mutexes currently held by this thread, which will be released when it exits.
boost::container::flat_set<SharedPtr<Mutex>> held_mutexes;