1c7a7ed79b
A fairly basic service function, which only appears to currently support retrieving the process state. This also alters the ProcessStatus enum to contain all of the values that a kernel process seems to be able of reporting with regards to state.
301 lines
8.8 KiB
C++
301 lines
8.8 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/bit_field.h"
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#include "common/common_types.h"
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#include "core/hle/kernel/object.h"
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#include "core/hle/kernel/thread.h"
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#include "core/hle/kernel/vm_manager.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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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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union ProcessFlags {
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u16 raw;
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BitField<0, 1, u16>
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allow_debug; ///< Allows other processes to attach to and debug this process.
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BitField<1, 1, u16> force_debug; ///< Allows this process to attach to processes even if they
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/// don't have allow_debug set.
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BitField<2, 1, u16> allow_nonalphanum;
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BitField<3, 1, u16> shared_page_writable; ///< Shared page is mapped with write permissions.
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BitField<4, 1, u16> privileged_priority; ///< Can use priority levels higher than 24.
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BitField<5, 1, u16> allow_main_args;
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BitField<6, 1, u16> shared_device_mem;
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BitField<7, 1, u16> runnable_on_sleep;
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BitField<8, 4, MemoryRegion>
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memory_region; ///< Default region for memory allocations for this process
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BitField<12, 1, u16> loaded_high; ///< Application loaded high (not at 0x00100000).
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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 Object {
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public:
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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 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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u32 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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ResourceLimit& GetResourceLimit() {
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return *resource_limit;
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}
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/// Gets the resource limit descriptor for this process
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const ResourceLimit& GetResourceLimit() const {
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return *resource_limit;
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}
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/// Gets the default CPU ID for this process
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u8 GetDefaultProcessorID() const {
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return ideal_processor;
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}
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/// Gets the bitmask of allowed CPUs that this process' threads can run on.
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u32 GetAllowedProcessorMask() const {
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return allowed_processor_mask;
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}
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/// Gets the bitmask of allowed thread priorities.
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u32 GetAllowedThreadPriorityMask() const {
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return allowed_thread_priority_mask;
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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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/**
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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.
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*/
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void LoadFromMetadata(const FileSys::ProgramMetadata& metadata);
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/**
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* Parses a list of kernel capability descriptors (as found in the ExHeader) and applies them
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* to this process.
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*/
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void ParseKernelCaps(const u32* kernel_caps, std::size_t len);
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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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// Memory 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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ResultVal<VAddr> HeapAllocate(VAddr target, u64 size, VMAPermission perms);
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ResultCode HeapFree(VAddr target, u32 size);
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ResultCode MirrorMemory(VAddr dst_addr, VAddr src_addr, u64 size);
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ResultCode UnmapMemory(VAddr dst_addr, VAddr src_addr, u64 size);
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private:
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explicit Process(KernelCore& kernel);
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~Process() override;
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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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u32 process_id = 0;
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/// Title ID corresponding to the process
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u64 program_id;
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/// Resource limit descriptor for this process
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SharedPtr<ResourceLimit> resource_limit;
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/// The process may only call SVCs which have the corresponding bit set.
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std::bitset<0x80> svc_access_mask;
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/// Maximum size of the handle table for the process.
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u32 handle_table_size = 0x200;
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/// Special memory ranges mapped into this processes address space. This is used to give
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/// processes access to specific I/O regions and device memory.
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boost::container::static_vector<AddressMapping, 8> address_mappings;
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ProcessFlags flags;
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/// Kernel compatibility version for this process
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u16 kernel_version = 0;
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/// The default CPU for this process, threads are scheduled on this cpu by default.
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u8 ideal_processor = 0;
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/// Bitmask of allowed CPUs that this process' threads can run on. TODO(Subv): Actually parse
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/// this value from the process header.
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u32 allowed_processor_mask = THREADPROCESSORID_DEFAULT_MASK;
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u32 allowed_thread_priority_mask = 0xFFFFFFFF;
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u32 is_virtual_address_memory_enabled = 0;
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// Memory used to back the allocations in the regular heap. A single vector is used to cover
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// the entire virtual address space extents that bound the allocations, including any holes.
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// This makes deallocation and reallocation of holes fast and keeps process memory contiguous
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// in the emulator address space, allowing Memory::GetPointer to be reasonably safe.
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std::shared_ptr<std::vector<u8>> heap_memory;
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// The left/right bounds of the address space covered by heap_memory.
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VAddr heap_start = 0;
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VAddr heap_end = 0;
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u64 heap_used = 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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/// 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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std::string name;
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};
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} // namespace Kernel
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