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// Copyright 2015 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <bitset>
#include <cstddef>
#include <memory>
#include <string>
#include <boost/container/static_vector.hpp>
#include "common/bit_field.h"
#include "common/common_types.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/vm_manager.h"
namespace Kernel {
struct AddressMapping {
// Address and size must be page-aligned
VAddr address;
u32 size;
bool writable;
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).
};
class ResourceLimit;
struct CodeSet final : public Object {
static SharedPtr<CodeSet> Create(std::string name, u64 program_id);
std::string GetTypeName() const override { return "CodeSet"; }
std::string GetName() const override { return name; }
static const HandleType HANDLE_TYPE = HandleType::CodeSet;
HandleType GetHandleType() const override { return HANDLE_TYPE; }
/// Name of the process
std::string name;
/// Title ID corresponding to the process
u64 program_id;
std::shared_ptr<std::vector<u8>> memory;
struct Segment {
size_t offset = 0;
VAddr addr = 0;
u32 size = 0;
};
Segment code, rodata, data;
VAddr entrypoint;
private:
CodeSet();
~CodeSet() override;
};
class Process final : public Object {
public:
static SharedPtr<Process> Create(SharedPtr<CodeSet> code_set);
std::string GetTypeName() const override { return "Process"; }
std::string GetName() const override { return codeset->name; }
static const HandleType HANDLE_TYPE = HandleType::Process;
HandleType GetHandleType() const override { return HANDLE_TYPE; }
static u32 next_process_id;
SharedPtr<CodeSet> codeset;
/// 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.
unsigned int 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 id of this process
u32 process_id = next_process_id++;
/**
* Parses a list of kernel capability descriptors (as found in the ExHeader) and applies them
* to this process.
*/
void ParseKernelCaps(const u32* kernel_caps, size_t len);
/**
* Applies address space changes and launches the process main thread.
*/
void Run(s32 main_thread_priority, u32 stack_size);
///////////////////////////////////////////////////////////////////////////////////////////////
// Memory Management
VMManager vm_manager;
// 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, heap_end = 0;
std::shared_ptr<std::vector<u8>> linear_heap_memory;
/// Bitmask of the used TLS slots
std::bitset<300> used_tls_slots;
ResultVal<VAddr> HeapAllocate(VAddr target, u32 size, VMAPermission perms);
ResultCode HeapFree(VAddr target, u32 size);
ResultVal<VAddr> LinearAllocate(VAddr target, u32 size, VMAPermission perms);
ResultCode LinearFree(VAddr target, u32 size);
private:
Process();
~Process() override;
};
extern SharedPtr<Process> g_current_process;
}
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