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kernel/process: Move main thread stack allocation to its own function

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Keeps this particular set of behavior isolated to its own function.
This commit is contained in:
Lioncash 2019-07-07 04:13:56 -04:00
parent 9e689a81f8
commit eb6f55d880
2 changed files with 17 additions and 12 deletions
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26
src/core/hle/kernel/process.cpp
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@ -186,19 +186,9 @@ ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata) {
} }
void Process::Run(s32 main_thread_priority, u64 stack_size) { void Process::Run(s32 main_thread_priority, u64 stack_size) {
// The kernel always ensures that the given stack size is page aligned. AllocateMainThreadStack(stack_size);
main_thread_stack_size = Common::AlignUp(stack_size, Memory::PAGE_SIZE);
// Allocate and map the main thread stack
// TODO(bunnei): This is heap area that should be allocated by the kernel and not mapped as part
// of the user address space.
const VAddr mapping_address = vm_manager.GetTLSIORegionEndAddress() - main_thread_stack_size;
vm_manager
.MapMemoryBlock(mapping_address, std::make_shared<std::vector<u8>>(main_thread_stack_size),
0, main_thread_stack_size, MemoryState::Stack)
.Unwrap();
vm_manager.LogLayout(); vm_manager.LogLayout();
ChangeStatus(ProcessStatus::Running); ChangeStatus(ProcessStatus::Running);
SetupMainThread(*this, kernel, main_thread_priority); SetupMainThread(*this, kernel, main_thread_priority);
@ -327,4 +317,16 @@ void Process::ChangeStatus(ProcessStatus new_status) {
WakeupAllWaitingThreads(); WakeupAllWaitingThreads();
} }
void Process::AllocateMainThreadStack(u64 stack_size) {
// The kernel always ensures that the given stack size is page aligned.
main_thread_stack_size = Common::AlignUp(stack_size, Memory::PAGE_SIZE);
// Allocate and map the main thread stack
const VAddr mapping_address = vm_manager.GetTLSIORegionEndAddress() - main_thread_stack_size;
vm_manager
.MapMemoryBlock(mapping_address, std::make_shared<std::vector<u8>>(main_thread_stack_size),
0, main_thread_stack_size, MemoryState::Stack)
.Unwrap();
}
} // namespace Kernel } // namespace Kernel

3
src/core/hle/kernel/process.h
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@ -280,6 +280,9 @@ private:
/// a process signal. /// a process signal.
void ChangeStatus(ProcessStatus new_status); void ChangeStatus(ProcessStatus new_status);
/// Allocates the main thread stack for the process, given the stack size in bytes.
void AllocateMainThreadStack(u64 stack_size);
/// Memory manager for this process. /// Memory manager for this process.
Kernel::VMManager vm_manager; Kernel::VMManager vm_manager;