318 lines
8.9 KiB
C++
318 lines
8.9 KiB
C++
// Copyright 2015 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <array>
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#include <bitset>
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#include <cstddef>
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#include <memory>
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#include <string>
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#include <vector>
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#include <boost/container/static_vector.hpp>
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#include "common/common_types.h"
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#include "core/hle/kernel/handle_table.h"
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#include "core/hle/kernel/process_capability.h"
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#include "core/hle/kernel/vm_manager.h"
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#include "core/hle/kernel/wait_object.h"
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#include "core/hle/result.h"
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namespace FileSys {
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class ProgramMetadata;
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}
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namespace Kernel {
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class KernelCore;
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class ResourceLimit;
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class Thread;
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struct AddressMapping {
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// Address and size must be page-aligned
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VAddr address;
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u64 size;
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bool read_only;
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bool unk_flag;
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};
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enum class MemoryRegion : u16 {
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APPLICATION = 1,
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SYSTEM = 2,
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BASE = 3,
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};
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/**
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* Indicates the status of a Process instance.
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*
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* @note These match the values as used by kernel,
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* so new entries should only be added if RE
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* shows that a new value has been introduced.
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*/
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enum class ProcessStatus {
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Created,
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CreatedWithDebuggerAttached,
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Running,
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WaitingForDebuggerToAttach,
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DebuggerAttached,
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Exiting,
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Exited,
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DebugBreak,
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};
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struct CodeSet final {
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struct Segment {
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std::size_t offset = 0;
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VAddr addr = 0;
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u32 size = 0;
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};
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explicit CodeSet();
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~CodeSet();
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Segment& CodeSegment() {
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return segments[0];
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}
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const Segment& CodeSegment() const {
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return segments[0];
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}
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Segment& RODataSegment() {
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return segments[1];
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}
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const Segment& RODataSegment() const {
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return segments[1];
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}
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Segment& DataSegment() {
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return segments[2];
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}
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const Segment& DataSegment() const {
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return segments[2];
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}
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std::shared_ptr<std::vector<u8>> memory;
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std::array<Segment, 3> segments;
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VAddr entrypoint = 0;
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};
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class Process final : public WaitObject {
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public:
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enum : u64 {
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/// Lowest allowed process ID for a kernel initial process.
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InitialKIPIDMin = 1,
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/// Highest allowed process ID for a kernel initial process.
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InitialKIPIDMax = 80,
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/// Lowest allowed process ID for a userland process.
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ProcessIDMin = 81,
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/// Highest allowed process ID for a userland process.
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ProcessIDMax = 0xFFFFFFFFFFFFFFFF,
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};
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static constexpr std::size_t RANDOM_ENTROPY_SIZE = 4;
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static SharedPtr<Process> Create(KernelCore& kernel, std::string&& name);
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std::string GetTypeName() const override {
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return "Process";
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}
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std::string GetName() const override {
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return name;
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}
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static const HandleType HANDLE_TYPE = HandleType::Process;
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HandleType GetHandleType() const override {
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return HANDLE_TYPE;
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}
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/// Gets a reference to the process' memory manager.
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Kernel::VMManager& VMManager() {
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return vm_manager;
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}
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/// Gets a const reference to the process' memory manager.
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const Kernel::VMManager& VMManager() const {
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return vm_manager;
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}
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/// Gets a reference to the process' handle table.
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HandleTable& GetHandleTable() {
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return handle_table;
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}
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/// Gets a const reference to the process' handle table.
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const HandleTable& GetHandleTable() const {
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return handle_table;
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}
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/// Gets the current status of the process
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ProcessStatus GetStatus() const {
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return status;
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}
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/// Gets the unique ID that identifies this particular process.
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u64 GetProcessID() const {
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return process_id;
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}
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/// Gets the title ID corresponding to this process.
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u64 GetTitleID() const {
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return program_id;
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}
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/// Gets the resource limit descriptor for this process
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SharedPtr<ResourceLimit> GetResourceLimit() const;
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/// Gets the ideal CPU core ID for this process
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u8 GetIdealCore() const {
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return ideal_core;
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}
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/// Gets the bitmask of allowed cores that this process' threads can run on.
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u64 GetCoreMask() const {
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return capabilities.GetCoreMask();
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}
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/// Gets the bitmask of allowed thread priorities.
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u64 GetPriorityMask() const {
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return capabilities.GetPriorityMask();
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}
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u32 IsVirtualMemoryEnabled() const {
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return is_virtual_address_memory_enabled;
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}
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/// Whether this process is an AArch64 or AArch32 process.
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bool Is64BitProcess() const {
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return is_64bit_process;
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}
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/// Gets the total running time of the process instance in ticks.
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u64 GetCPUTimeTicks() const {
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return total_process_running_time_ticks;
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}
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/// Updates the total running time, adding the given ticks to it.
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void UpdateCPUTimeTicks(u64 ticks) {
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total_process_running_time_ticks += ticks;
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}
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/// Gets 8 bytes of random data for svcGetInfo RandomEntropy
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u64 GetRandomEntropy(std::size_t index) const {
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return random_entropy.at(index);
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}
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/// Clears the signaled state of the process if and only if it's signaled.
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///
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/// @pre The process must not be already terminated. If this is called on a
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/// terminated process, then ERR_INVALID_STATE will be returned.
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///
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/// @pre The process must be in a signaled state. If this is called on a
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/// process instance that is not signaled, ERR_INVALID_STATE will be
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/// returned.
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ResultCode ClearSignalState();
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/**
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* Loads process-specifics configuration info with metadata provided
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* by an executable.
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*
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* @param metadata The provided metadata to load process specific info from.
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*
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* @returns RESULT_SUCCESS if all relevant metadata was able to be
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* loaded and parsed. Otherwise, an error code is returned.
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*/
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ResultCode LoadFromMetadata(const FileSys::ProgramMetadata& metadata);
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/**
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* Applies address space changes and launches the process main thread.
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*/
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void Run(VAddr entry_point, s32 main_thread_priority, u32 stack_size);
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/**
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* Prepares a process for termination by stopping all of its threads
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* and clearing any other resources.
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*/
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void PrepareForTermination();
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void LoadModule(CodeSet module_, VAddr base_addr);
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///////////////////////////////////////////////////////////////////////////////////////////////
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// Thread-local storage management
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// Marks the next available region as used and returns the address of the slot.
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VAddr MarkNextAvailableTLSSlotAsUsed(Thread& thread);
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// Frees a used TLS slot identified by the given address
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void FreeTLSSlot(VAddr tls_address);
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private:
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explicit Process(KernelCore& kernel);
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~Process() override;
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/// Checks if the specified thread should wait until this process is available.
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bool ShouldWait(Thread* thread) const override;
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/// Acquires/locks this process for the specified thread if it's available.
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void Acquire(Thread* thread) override;
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/// Changes the process status. If the status is different
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/// from the current process status, then this will trigger
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/// a process signal.
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void ChangeStatus(ProcessStatus new_status);
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/// Memory manager for this process.
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Kernel::VMManager vm_manager;
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/// Current status of the process
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ProcessStatus status;
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/// The ID of this process
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u64 process_id = 0;
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/// Title ID corresponding to the process
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u64 program_id = 0;
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/// Resource limit descriptor for this process
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SharedPtr<ResourceLimit> resource_limit;
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/// The ideal CPU core for this process, threads are scheduled on this core by default.
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u8 ideal_core = 0;
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u32 is_virtual_address_memory_enabled = 0;
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/// The Thread Local Storage area is allocated as processes create threads,
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/// each TLS area is 0x200 bytes, so one page (0x1000) is split up in 8 parts, and each part
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/// holds the TLS for a specific thread. This vector contains which parts are in use for each
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/// page as a bitmask.
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/// This vector will grow as more pages are allocated for new threads.
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std::vector<std::bitset<8>> tls_slots;
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/// Contains the parsed process capability descriptors.
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ProcessCapabilities capabilities;
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/// Whether or not this process is AArch64, or AArch32.
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/// By default, we currently assume this is true, unless otherwise
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/// specified by metadata provided to the process during loading.
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bool is_64bit_process = true;
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/// Whether or not this process is signaled. This occurs
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/// upon the process changing to a different state.
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bool is_signaled = false;
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/// Total running time for the process in ticks.
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u64 total_process_running_time_ticks = 0;
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/// Per-process handle table for storing created object handles in.
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HandleTable handle_table;
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/// Random values for svcGetInfo RandomEntropy
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std::array<u64, RANDOM_ENTROPY_SIZE> random_entropy;
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std::string name;
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};
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} // namespace Kernel
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