mirror of
https://github.com/RPCS3/rpcs3.git
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329 lines
8.1 KiB
C++
329 lines
8.1 KiB
C++
#pragma once
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#include <memory>
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#include "util/types.hpp"
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#include "util/atomic.hpp"
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#include "util/auto_typemap.hpp"
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#include "Utilities/StrFmt.h"
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#include "util/to_endian.hpp"
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namespace utils
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{
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class shm;
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}
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namespace vm
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{
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extern u8* const g_base_addr;
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extern u8* const g_sudo_addr;
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extern u8* const g_exec_addr;
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extern u8* const g_stat_addr;
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extern u8* const g_free_addr;
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extern u8 g_reservations[];
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struct writer_lock;
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enum memory_location_t : uint
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{
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main,
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user64k,
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user1m,
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rsx_context,
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video,
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stack,
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spu,
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memory_location_max,
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any = 0xffffffff,
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};
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enum page_info_t : u8
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{
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page_readable = (1 << 0),
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page_writable = (1 << 1),
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page_executable = (1 << 2),
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page_fault_notification = (1 << 3),
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page_no_reservations = (1 << 4),
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page_64k_size = (1 << 5),
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page_1m_size = (1 << 6),
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page_allocated = (1 << 7),
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};
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// Address type
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enum addr_t : u32 {};
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// Page information
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using memory_page = atomic_t<u8>;
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// Change memory protection of specified memory region
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bool page_protect(u32 addr, u32 size, u8 flags_test = 0, u8 flags_set = 0, u8 flags_clear = 0);
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// Check flags for specified memory range (unsafe)
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bool check_addr(u32 addr, u8 flags, u32 size);
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template <u32 Size = 1>
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bool check_addr(u32 addr, u8 flags = page_readable)
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{
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extern std::array<memory_page, 0x100000000 / 4096> g_pages;
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if (Size - 1 >= 4095u || Size & (Size - 1) || addr % Size)
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{
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// TODO
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return check_addr(addr, flags, Size);
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}
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return !(~g_pages[addr / 4096] & (flags | page_allocated));
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}
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// Search and map memory in specified memory location (min alignment is 0x10000)
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u32 alloc(u32 size, memory_location_t location, u32 align = 0x10000);
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// Map memory at specified address (in optionally specified memory location)
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u32 falloc(u32 addr, u32 size, memory_location_t location = any, const std::shared_ptr<utils::shm>* src = nullptr);
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// Unmap memory at specified address (in optionally specified memory location), return size
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u32 dealloc(u32 addr, memory_location_t location = any, const std::shared_ptr<utils::shm>* src = nullptr);
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// utils::memory_lock wrapper for locking sudo memory
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void lock_sudo(u32 addr, u32 size);
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enum block_flags_3
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{
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page_hidden = 0x1000,
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page_size_4k = 0x100, // SYS_MEMORY_PAGE_SIZE_4K
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page_size_64k = 0x200, // SYS_MEMORY_PAGE_SIZE_64K
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page_size_1m = 0x400, // SYS_MEMORY_PAGE_SIZE_1M
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page_size_mask = 0xF00, // SYS_MEMORY_PAGE_SIZE_MASK
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stack_guarded = 0x10,
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preallocated = 0x20, // nonshareable
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bf0_0x1 = 0x1, // TODO: document
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bf0_0x2 = 0x2, // TODO: document
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bf0_mask = bf0_0x1 | bf0_0x2,
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};
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// Object that handles memory allocations inside specific constant bounds ("location")
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class block_t final
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{
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auto_typemap<block_t> m;
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// Common mapped region for special cases
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std::shared_ptr<utils::shm> m_common;
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bool try_alloc(u32 addr, u8 flags, u32 size, std::shared_ptr<utils::shm>&&);
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public:
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block_t(u32 addr, u32 size, u64 flags);
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~block_t();
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public:
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const u32 addr; // Start address
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const u32 size; // Total size
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const u64 flags; // Byte 0xF000: block_flags_3
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// Byte 0x0F00: block_flags_2_page_size (SYS_MEMORY_PAGE_SIZE_*)
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// Byte 0x00F0: block_flags_1
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// Byte 0x000F: block_flags_0
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// Search and map memory (min alignment is 0x10000)
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u32 alloc(u32 size, const std::shared_ptr<utils::shm>* = nullptr, u32 align = 0x10000, u64 flags = 0);
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// Try to map memory at fixed location
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u32 falloc(u32 addr, u32 size, const std::shared_ptr<utils::shm>* = nullptr, u64 flags = 0);
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// Unmap memory at specified location previously returned by alloc(), return size
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u32 dealloc(u32 addr, const std::shared_ptr<utils::shm>* = nullptr);
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// Get memory at specified address (if size = 0, addr assumed exact)
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std::pair<u32, std::shared_ptr<utils::shm>> peek(u32 addr, u32 size = 0);
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// Get allocated memory count
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u32 used();
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// Internal
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u32 imp_used(const vm::writer_lock&);
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};
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// Create new memory block with specified parameters and return it
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std::shared_ptr<block_t> map(u32 addr, u32 size, u64 flags = 0);
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// Create new memory block with at arbitrary position with specified alignment
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std::shared_ptr<block_t> find_map(u32 size, u32 align, u64 flags = 0);
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// Delete existing memory block with specified start address, return it
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std::shared_ptr<block_t> unmap(u32 addr, bool must_be_empty = false);
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// Get memory block associated with optionally specified memory location or optionally specified address
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std::shared_ptr<block_t> get(memory_location_t location, u32 addr = 0);
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// Allocate segment at specified location, does nothing if exists already
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std::shared_ptr<block_t> reserve_map(memory_location_t location, u32 addr, u32 area_size, u64 flags = page_size_64k);
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// Get PS3 virtual memory address from the provided pointer (nullptr or pointer from outside is always converted to 0)
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// Super memory is allowed as well
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inline std::pair<vm::addr_t, bool> try_get_addr(const void* real_ptr)
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{
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const std::make_unsigned_t<std::ptrdiff_t> diff = static_cast<const u8*>(real_ptr) - g_base_addr;
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if (diff <= u64{UINT32_MAX} * 2 + 1)
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{
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return {vm::addr_t{static_cast<u32>(diff)}, true};
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}
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return {};
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}
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inline vm::addr_t get_addr(const void* ptr)
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{
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const auto [addr, ok] = try_get_addr(ptr);
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if (!ok)
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{
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fmt::throw_exception("Not a virtual memory pointer (%p)", ptr);
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}
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return addr;
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}
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template<typename T>
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struct cast_impl
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{
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static_assert(std::is_same<T, u32>::value, "vm::cast() error: unsupported type");
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};
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template<>
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struct cast_impl<u32>
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{
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static vm::addr_t cast(u32 addr,
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u32,
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u32,
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const char*,
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const char*)
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{
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return static_cast<vm::addr_t>(addr);
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}
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};
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template<>
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struct cast_impl<u64>
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{
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static vm::addr_t cast(u64 addr,
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u32 line,
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u32 col,
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const char* file,
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const char* func)
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{
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return static_cast<vm::addr_t>(::narrow<u32>(addr, line, col, file, func));
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}
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};
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template<typename T, bool Se>
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struct cast_impl<se_t<T, Se>>
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{
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static vm::addr_t cast(const se_t<T, Se>& addr,
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u32 line,
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u32 col,
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const char* file,
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const char* func)
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{
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return cast_impl<T>::cast(addr, line, col, file, func);
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}
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};
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template<typename T>
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vm::addr_t cast(const T& addr,
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u32 line = __builtin_LINE(),
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u32 col = __builtin_COLUMN(),
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const char* file = __builtin_FILE(),
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const char* func = __builtin_FUNCTION())
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{
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return cast_impl<T>::cast(addr, line, col, file, func);
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}
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// Convert specified PS3/PSV virtual memory address to a pointer for common access
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inline void* base(u32 addr)
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{
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return g_base_addr + addr;
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}
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inline const u8& read8(u32 addr)
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{
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return g_base_addr[addr];
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}
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inline void write8(u32 addr, u8 value)
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{
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g_base_addr[addr] = value;
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}
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// Read or write virtual memory in a safe manner, returns false on failure
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bool try_access(u32 addr, void* ptr, u32 size, bool is_write);
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inline namespace ps3_
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{
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// Convert specified PS3 address to a pointer of specified (possibly converted to BE) type
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template<typename T> inline to_be_t<T>* _ptr(u32 addr)
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{
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return static_cast<to_be_t<T>*>(base(addr));
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}
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// Convert specified PS3 address to a reference of specified (possibly converted to BE) type
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template<typename T> inline to_be_t<T>& _ref(u32 addr)
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{
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return *_ptr<T>(addr);
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}
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// Access memory bypassing memory protection
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template <typename T = u8>
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inline to_be_t<T>* get_super_ptr(u32 addr)
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{
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return reinterpret_cast<to_be_t<T>*>(g_sudo_addr + addr);
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}
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inline const be_t<u16>& read16(u32 addr)
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{
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return _ref<u16>(addr);
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}
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inline void write16(u32 addr, be_t<u16> value)
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{
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_ref<u16>(addr) = value;
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}
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inline const be_t<u32>& read32(u32 addr)
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{
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return _ref<u32>(addr);
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}
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inline void write32(u32 addr, be_t<u32> value)
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{
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_ref<u32>(addr) = value;
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}
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inline const be_t<u64>& read64(u32 addr)
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{
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return _ref<u64>(addr);
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}
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inline void write64(u32 addr, be_t<u64> value)
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{
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_ref<u64>(addr) = value;
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}
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void init();
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}
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void close();
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template <typename T, typename AT>
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class _ptr_base;
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template <typename T, typename AT>
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class _ref_base;
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}
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