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