// 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/bit_field.h"
#include "common/common_types.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/object.h"
#include "core/hle/kernel/thread.h"
#include "core/hle/kernel/vm_manager.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,
};
union ProcessFlags {
u16 raw;
BitField<0, 1, u16>
allow_debug; ///< Allows other processes to attach to and debug this process.
BitField<1, 1, u16> force_debug; ///< Allows this process to attach to processes even if they
/// don't have allow_debug set.
BitField<2, 1, u16> allow_nonalphanum;
BitField<3, 1, u16> shared_page_writable; ///< Shared page is mapped with write permissions.
BitField<4, 1, u16> privileged_priority; ///< Can use priority levels higher than 24.
BitField<5, 1, u16> allow_main_args;
BitField<6, 1, u16> shared_device_mem;
BitField<7, 1, u16> runnable_on_sleep;
BitField<8, 4, MemoryRegion>
memory_region; ///< Default region for memory allocations for this process
BitField<12, 1, u16> loaded_high; ///< Application loaded high (not at 0x00100000).
};
/**
* 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 Object {
public:
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.
u32 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
ResourceLimit& GetResourceLimit() {
return *resource_limit;
}
/// Gets the resource limit descriptor for this process
const ResourceLimit& GetResourceLimit() const {
return *resource_limit;
}
/// 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.
u32 GetAllowedProcessorMask() const {
return allowed_processor_mask;
}
/// Gets the bitmask of allowed thread priorities.
u32 GetAllowedThreadPriorityMask() const {
return allowed_thread_priority_mask;
}
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;
}
/**
* Loads process-specifics configuration info with metadata provided
* by an executable.
*
* @param metadata The provided metadata to load process specific info.
*/
void LoadFromMetadata(const FileSys::ProgramMetadata& metadata);
/**
* Parses a list of kernel capability descriptors (as found in the ExHeader) and applies them
* to this process.
*/
void ParseKernelCaps(const u32* kernel_caps, std::size_t len);
/**
* 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);
///////////////////////////////////////////////////////////////////////////////////////////////
// Memory 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);
ResultVal<VAddr> HeapAllocate(VAddr target, u64 size, VMAPermission perms);
ResultCode HeapFree(VAddr target, u32 size);
ResultCode MirrorMemory(VAddr dst_addr, VAddr src_addr, u64 size);
ResultCode UnmapMemory(VAddr dst_addr, VAddr src_addr, u64 size);
private:
explicit Process(KernelCore& kernel);
~Process() override;
/// Memory manager for this process.
Kernel::VMManager vm_manager;
/// Current status of the process
ProcessStatus status;
/// The ID of this process
u32 process_id = 0;
/// Title ID corresponding to the process
u64 program_id;
/// Resource limit descriptor for this process
SharedPtr<ResourceLimit> resource_limit;
/// The process may only call SVCs which have the corresponding bit set.
std::bitset<0x80> svc_access_mask;
/// Maximum size of the handle table for the process.
u32 handle_table_size = 0x200;
/// Special memory ranges mapped into this processes address space. This is used to give
/// processes access to specific I/O regions and device memory.
boost::container::static_vector<AddressMapping, 8> address_mappings;
ProcessFlags flags;
/// Kernel compatibility version for this process
u16 kernel_version = 0;
/// The default CPU for this process, threads are scheduled on this cpu by default.
u8 ideal_processor = 0;
/// Bitmask of allowed CPUs that this process' threads can run on. TODO(Subv): Actually parse
/// this value from the process header.
u32 allowed_processor_mask = THREADPROCESSORID_DEFAULT_MASK;
u32 allowed_thread_priority_mask = 0xFFFFFFFF;
u32 is_virtual_address_memory_enabled = 0;
// Memory used to back the allocations in the regular heap. A single vector is used to cover
// the entire virtual address space extents that bound the allocations, including any holes.
// This makes deallocation and reallocation of holes fast and keeps process memory contiguous
// in the emulator address space, allowing Memory::GetPointer to be reasonably safe.
std::shared_ptr<std::vector<u8>> heap_memory;
// The left/right bounds of the address space covered by heap_memory.
VAddr heap_start = 0;
VAddr heap_end = 0;
u64 heap_used = 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;
/// 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;
/// Per-process handle table for storing created object handles in.
HandleTable handle_table;
std::string name;
};
} // namespace Kernel
