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kernel/process: Move main thread stack allocation to its own function
Keeps this particular set of behavior isolated to its own function.
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2 changed files with 17 additions and 12 deletions
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@ -186,19 +186,9 @@ ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata) {
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}
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void Process::Run(s32 main_thread_priority, u64 stack_size) {
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// The kernel always ensures that the given stack size is page aligned.
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main_thread_stack_size = Common::AlignUp(stack_size, Memory::PAGE_SIZE);
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// Allocate and map the main thread stack
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// TODO(bunnei): This is heap area that should be allocated by the kernel and not mapped as part
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// of the user address space.
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const VAddr mapping_address = vm_manager.GetTLSIORegionEndAddress() - main_thread_stack_size;
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vm_manager
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.MapMemoryBlock(mapping_address, std::make_shared<std::vector<u8>>(main_thread_stack_size),
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0, main_thread_stack_size, MemoryState::Stack)
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.Unwrap();
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AllocateMainThreadStack(stack_size);
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vm_manager.LogLayout();
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ChangeStatus(ProcessStatus::Running);
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SetupMainThread(*this, kernel, main_thread_priority);
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@ -327,4 +317,16 @@ void Process::ChangeStatus(ProcessStatus new_status) {
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WakeupAllWaitingThreads();
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}
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void Process::AllocateMainThreadStack(u64 stack_size) {
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// The kernel always ensures that the given stack size is page aligned.
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main_thread_stack_size = Common::AlignUp(stack_size, Memory::PAGE_SIZE);
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// Allocate and map the main thread stack
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const VAddr mapping_address = vm_manager.GetTLSIORegionEndAddress() - main_thread_stack_size;
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vm_manager
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.MapMemoryBlock(mapping_address, std::make_shared<std::vector<u8>>(main_thread_stack_size),
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0, main_thread_stack_size, MemoryState::Stack)
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.Unwrap();
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}
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} // namespace Kernel
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@ -280,6 +280,9 @@ private:
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/// a process signal.
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void ChangeStatus(ProcessStatus new_status);
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/// Allocates the main thread stack for the process, given the stack size in bytes.
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void AllocateMainThreadStack(u64 stack_size);
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/// Memory manager for this process.
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Kernel::VMManager vm_manager;
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