mirror of
https://github.com/RPCSX/rpcsx.git
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bdeccd889f
cpu_state -> cpu_flag vm::stack_allocator template improved ppu_cmd type changed to enum, cmd64 type added
367 lines
9 KiB
C++
367 lines
9 KiB
C++
#pragma once
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#include <map>
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#include <functional>
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#include <memory>
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class thread_ctrl;
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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_priv_addr;
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enum memory_location_t : uint
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{
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main,
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user_space,
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video,
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stack,
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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_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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struct access_violation : std::runtime_error
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{
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access_violation(u64 addr, const char* cause);
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};
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[[noreturn]] void throw_access_violation(u64 addr, const char* cause);
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// This flag is changed by various reservation functions and may have different meaning.
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// reservation_break() - true if the reservation was successfully broken.
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// reservation_acquire() - true if another existing reservation was broken.
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// reservation_free() - true if this thread's reservation was successfully removed.
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// reservation_op() - false if reservation_update() would succeed if called instead.
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// Write access to reserved memory - only set to true if the reservation was broken.
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extern thread_local bool g_tls_did_break_reservation;
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// Unconditionally break the reservation at specified address
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void reservation_break(u32 addr);
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// Reserve memory at the specified address for further atomic update
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void reservation_acquire(void* data, u32 addr, u32 size);
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// Attempt to atomically update previously reserved memory
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bool reservation_update(u32 addr, const void* data, u32 size);
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// Process a memory access error if it's caused by the reservation
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bool reservation_query(u32 addr, u32 size, bool is_writing, std::function<bool()> callback);
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// Returns true if the current thread owns reservation
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bool reservation_test(thread_ctrl* current);
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// Break all reservations created by the current thread
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void reservation_free();
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// Perform atomic operation unconditionally
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void reservation_op(u32 addr, u32 size, std::function<void()> proc);
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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 if existing memory range is allocated. Checking address before using it is very unsafe.
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// Return value may be wrong. Even if it's true and correct, actual memory protection may be read-only and no-access.
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bool check_addr(u32 addr, u32 size = 1);
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// Search and map memory in specified memory location (don't pass alignment smaller than 4096)
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u32 alloc(u32 size, memory_location_t location, u32 align = 4096, u32 sup = 0);
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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, u32 sup = 0);
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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, u32* sup_out = nullptr);
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// dealloc() with no return value and no exceptions
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void dealloc_verbose_nothrow(u32 addr, memory_location_t location = any) noexcept;
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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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std::map<u32, u32> m_map; // Mapped memory: addr -> size
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std::unordered_map<u32, u32> m_sup; // Supplementary info for allocations
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bool try_alloc(u32 addr, u32 size, u32 sup);
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public:
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block_t(u32 addr, u32 size, u64 flags = 0);
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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; // Currently unused
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// Search and map memory (don't pass alignment smaller than 4096)
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u32 alloc(u32 size, u32 align = 4096, u32 sup = 0);
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// Try to map memory at fixed location
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u32 falloc(u32 addr, u32 size, u32 sup = 0);
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// Unmap memory at specified location previously returned by alloc(), return size
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u32 dealloc(u32 addr, u32* sup_out = nullptr);
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// Get allocated memory count
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u32 used();
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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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// 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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// Get PS3/PSV virtual memory address from the provided pointer (nullptr always converted to 0)
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inline vm::addr_t get_addr(const void* real_ptr)
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{
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if (!real_ptr)
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{
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return vm::addr_t{};
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}
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const std::ptrdiff_t diff = static_cast<const u8*>(real_ptr) - g_base_addr;
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const u32 res = static_cast<u32>(diff);
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if (res == diff)
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{
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return static_cast<vm::addr_t>(res);
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}
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fmt::throw_exception("Not a virtual memory pointer (%p)", real_ptr);
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}
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// Convert pointer-to-member to a vm address compatible offset
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template<typename MT, typename T> inline u32 get_offset(MT T::*const member_ptr)
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{
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return static_cast<u32>(reinterpret_cast<std::uintptr_t>(&reinterpret_cast<char const volatile&>(reinterpret_cast<T*>(0ull)->*member_ptr)));
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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, const char* loc)
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{
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return static_cast<vm::addr_t>(addr);
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}
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static vm::addr_t cast(u32 addr)
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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, const char* loc)
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{
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return static_cast<vm::addr_t>(static_cast<u32>(addr));
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}
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static vm::addr_t cast(u64 addr)
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{
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return static_cast<vm::addr_t>(static_cast<u32>(addr));
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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, const char* loc)
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{
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return cast_impl<T>::cast(addr, loc);
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}
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static vm::addr_t cast(const se_t<T, Se>& addr)
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{
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return cast_impl<T>::cast(addr);
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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, const char* loc)
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{
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return cast_impl<T>::cast(addr, loc);
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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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{
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return cast_impl<T>::cast(addr);
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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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// Convert specified PS3/PSV virtual memory address to a pointer for privileged access (always readable/writable if allocated)
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inline void* base_priv(u32 addr)
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{
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return g_priv_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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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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template<typename T> inline to_be_t<T>* _ptr_priv(u32 addr)
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{
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return static_cast<to_be_t<T>*>(base_priv(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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template<typename T> inline to_be_t<T>& _ref_priv(u32 addr)
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{
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return *_ptr_priv<T>(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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namespace psv
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{
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template<typename T> inline to_le_t<T>* _ptr(u32 addr)
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{
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return static_cast<to_le_t<T>*>(base(addr));
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}
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template<typename T> inline to_le_t<T>* _ptr_priv(u32 addr)
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{
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return static_cast<to_le_t<T>*>(base_priv(addr));
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}
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template<typename T> inline to_le_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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template<typename T> inline to_le_t<T>& _ref_priv(u32 addr)
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{
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return *_ptr_priv<T>(addr);
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}
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inline const le_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, le_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 le_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, le_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 le_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, le_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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namespace psp
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{
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using namespace psv;
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void init();
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}
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void close();
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extern thread_local u64 g_tls_fault_count;
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}
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#include "vm_var.h"
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