mirror of
https://github.com/RPCS3/rpcs3.git
synced 2025-07-06 06:51:26 +12:00
867 lines
17 KiB
C++
867 lines
17 KiB
C++
#include "stdafx.h"
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#include "Memory.h"
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#include "Emu/System.h"
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#include "Utilities/mutex.h"
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#include "Utilities/cond.h"
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#include "Utilities/Thread.h"
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#include "Utilities/VirtualMemory.h"
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#include "Emu/CPU/CPUThread.h"
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#include "Emu/Cell/lv2/sys_memory.h"
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#include "Emu/RSX/GSRender.h"
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#include <atomic>
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#include <thread>
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#include <deque>
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static_assert(sizeof(notifier) == 8, "Unexpected size of notifier");
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namespace vm
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{
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static u8* memory_reserve_4GiB(std::uintptr_t _addr = 0)
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{
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for (u64 addr = _addr + 0x100000000;; addr += 0x100000000)
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{
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if (auto ptr = utils::memory_reserve(0x100000000, (void*)addr))
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{
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return static_cast<u8*>(ptr);
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}
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}
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// TODO: a condition to break loop
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return static_cast<u8*>(utils::memory_reserve(0x100000000));
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}
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// Emulated virtual memory
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u8* const g_base_addr = memory_reserve_4GiB(0);
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// Auxiliary virtual memory for executable areas
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u8* const g_exec_addr = memory_reserve_4GiB((std::uintptr_t)g_base_addr);
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// Stats for debugging
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u8* const g_stat_addr = memory_reserve_4GiB((std::uintptr_t)g_exec_addr);
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// Reservation stats (compressed x16)
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u8* const g_reservations = memory_reserve_4GiB((std::uintptr_t)g_stat_addr);
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// Reservation sync variables
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u8* const g_reservations2 = g_reservations + 0x10000000;
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// Memory locations
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std::vector<std::shared_ptr<block_t>> g_locations;
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// Memory mutex core
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shared_mutex g_mutex;
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// Memory mutex acknowledgement
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thread_local atomic_t<cpu_thread*>* g_tls_locked = nullptr;
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// Memory mutex: passive locks
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std::array<atomic_t<cpu_thread*>, 32> g_locks;
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static void _register_lock(cpu_thread* _cpu)
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{
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for (u32 i = 0;; i = (i + 1) % g_locks.size())
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{
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if (!g_locks[i] && g_locks[i].compare_and_swap_test(nullptr, _cpu))
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{
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g_tls_locked = g_locks.data() + i;
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return;
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}
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}
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}
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bool passive_lock(cpu_thread& cpu, bool wait)
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{
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if (UNLIKELY(g_tls_locked && *g_tls_locked == &cpu))
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{
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return true;
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}
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if (LIKELY(g_mutex.is_lockable()))
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{
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// Optimistic path (hope that mutex is not exclusively locked)
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_register_lock(&cpu);
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if (UNLIKELY(!g_mutex.is_lockable()))
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{
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passive_unlock(cpu);
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if (!wait)
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{
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return false;
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}
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::reader_lock lock(g_mutex);
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_register_lock(&cpu);
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}
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}
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else
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{
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if (!wait)
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{
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return false;
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}
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::reader_lock lock(g_mutex);
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_register_lock(&cpu);
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}
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return true;
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}
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void passive_unlock(cpu_thread& cpu)
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{
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if (auto& ptr = g_tls_locked)
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{
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*ptr = nullptr;
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ptr = nullptr;
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if (test(cpu.state, cpu_flag::memory))
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{
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cpu.state -= cpu_flag::memory;
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}
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}
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}
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void cleanup_unlock(cpu_thread& cpu) noexcept
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{
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if (g_tls_locked && cpu.get() == thread_ctrl::get_current())
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{
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g_tls_locked = nullptr;
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}
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for (u32 i = 0; i < g_locks.size(); i++)
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{
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if (g_locks[i] == &cpu)
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{
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g_locks[i].compare_and_swap_test(&cpu, nullptr);
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return;
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}
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}
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}
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void temporary_unlock(cpu_thread& cpu) noexcept
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{
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if (g_tls_locked && g_tls_locked->compare_and_swap_test(&cpu, nullptr))
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{
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cpu.cpu_unmem();
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}
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}
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void temporary_unlock() noexcept
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{
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if (auto cpu = get_current_cpu_thread())
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{
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temporary_unlock(*cpu);
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}
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}
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reader_lock::reader_lock()
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: locked(true)
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{
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auto cpu = get_current_cpu_thread();
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if (!cpu || !g_tls_locked || !g_tls_locked->compare_and_swap_test(cpu, nullptr))
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{
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cpu = nullptr;
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}
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g_mutex.lock_shared();
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if (cpu)
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{
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_register_lock(cpu);
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cpu->state -= cpu_flag::memory;
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}
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}
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reader_lock::~reader_lock()
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{
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if (locked)
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{
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g_mutex.unlock_shared();
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}
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}
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writer_lock::writer_lock(int full)
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: locked(true)
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{
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auto cpu = get_current_cpu_thread();
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if (!cpu || !g_tls_locked || !g_tls_locked->compare_and_swap_test(cpu, nullptr))
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{
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cpu = nullptr;
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}
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g_mutex.lock();
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if (full)
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{
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for (auto& lock : g_locks)
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{
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if (cpu_thread* ptr = lock)
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{
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ptr->state.test_and_set(cpu_flag::memory);
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}
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}
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for (auto& lock : g_locks)
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{
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while (cpu_thread* ptr = lock)
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{
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if (test(ptr->state, cpu_flag::dbg_global_stop + cpu_flag::exit))
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{
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break;
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}
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busy_wait();
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}
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}
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}
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if (cpu)
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{
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_register_lock(cpu);
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cpu->state -= cpu_flag::memory;
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}
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}
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writer_lock::~writer_lock()
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{
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if (locked)
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{
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g_mutex.unlock();
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}
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}
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void reservation_lock_internal(atomic_t<u64>& res)
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{
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for (u64 i = 0;; i++)
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{
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if (LIKELY(!atomic_storage<u64>::bts(res.raw(), 0)))
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{
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break;
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}
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if (i < 15)
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{
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busy_wait(500);
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}
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else
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{
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std::this_thread::yield();
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}
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}
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}
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// Page information
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struct memory_page
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{
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// Memory flags
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atomic_t<u8> flags;
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};
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// Memory pages
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std::array<memory_page, 0x100000000 / 4096> g_pages{};
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static void _page_map(u32 addr, u8 flags, utils::shm& shm)
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{
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const u32 size = shm.size();
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if (!size || (size | addr) % 4096 || flags & page_allocated)
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{
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fmt::throw_exception("Invalid arguments (addr=0x%x, size=0x%x)" HERE, addr, size);
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}
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for (u32 i = addr / 4096; i < addr / 4096 + size / 4096; i++)
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{
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if (g_pages[i].flags)
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{
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fmt::throw_exception("Memory already mapped (addr=0x%x, size=0x%x, flags=0x%x, current_addr=0x%x)" HERE, addr, size, flags, i * 4096);
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}
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}
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if (shm.map_critical(g_base_addr + addr) != g_base_addr + addr)
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{
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fmt::throw_exception("Memory mapping failed - blame Windows (addr=0x%x, size=0x%x, flags=0x%x)", addr, size, flags);
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}
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if (flags & page_executable)
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{
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utils::memory_commit(g_exec_addr + addr, size);
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}
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if (g_cfg.core.ppu_debug)
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{
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utils::memory_commit(g_stat_addr + addr, size);
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}
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for (u32 i = addr / 4096; i < addr / 4096 + size / 4096; i++)
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{
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if (g_pages[i].flags.exchange(flags | page_allocated))
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{
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fmt::throw_exception("Concurrent access (addr=0x%x, size=0x%x, flags=0x%x, current_addr=0x%x)" HERE, addr, size, flags, i * 4096);
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}
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}
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}
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bool page_protect(u32 addr, u32 size, u8 flags_test, u8 flags_set, u8 flags_clear)
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{
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vm::writer_lock lock(0);
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if (!size || (size | addr) % 4096)
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{
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fmt::throw_exception("Invalid arguments (addr=0x%x, size=0x%x)" HERE, addr, size);
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}
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const u8 flags_both = flags_set & flags_clear;
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flags_test |= page_allocated;
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flags_set &= ~flags_both;
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flags_clear &= ~flags_both;
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for (u32 i = addr / 4096; i < addr / 4096 + size / 4096; i++)
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{
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if ((g_pages[i].flags & flags_test) != (flags_test | page_allocated))
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{
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return false;
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}
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}
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if (!flags_set && !flags_clear)
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{
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return true;
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}
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u8 start_value = 0xff;
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for (u32 start = addr / 4096, end = start + size / 4096, i = start; i < end + 1; i++)
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{
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u8 new_val = 0xff;
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if (i < end)
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{
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g_pages[i].flags |= flags_set;
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g_pages[i].flags &= ~flags_clear;
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new_val = g_pages[i].flags & (page_readable | page_writable);
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}
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if (new_val != start_value)
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{
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if (u32 page_size = (i - start) * 4096)
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{
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const auto protection = start_value & page_writable ? utils::protection::rw : (start_value & page_readable ? utils::protection::ro : utils::protection::no);
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utils::memory_protect(g_base_addr + start * 4096, page_size, protection);
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}
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start_value = new_val;
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start = i;
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}
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}
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return true;
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}
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static void _page_unmap(u32 addr, utils::shm& shm)
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{
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const u32 size = shm.size();
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if (!size || (size | addr) % 4096)
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{
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fmt::throw_exception("Invalid arguments (addr=0x%x, size=0x%x)" HERE, addr, size);
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}
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bool is_exec = false;
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for (u32 i = addr / 4096; i < addr / 4096 + size / 4096; i++)
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{
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if ((g_pages[i].flags & page_allocated) == 0)
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{
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fmt::throw_exception("Memory not mapped (addr=0x%x, size=0x%x, current_addr=0x%x)" HERE, addr, size, i * 4096);
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}
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if (g_pages[i].flags & page_executable)
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{
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is_exec = true;
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}
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}
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for (u32 i = addr / 4096; i < addr / 4096 + size / 4096; i++)
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{
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if (!(g_pages[i].flags.exchange(0) & page_allocated))
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{
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fmt::throw_exception("Concurrent access (addr=0x%x, size=0x%x, current_addr=0x%x)" HERE, addr, size, i * 4096);
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}
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}
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shm.unmap_critical(g_base_addr + addr);
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if (is_exec)
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{
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utils::memory_decommit(g_exec_addr + addr, size);
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}
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if (g_cfg.core.ppu_debug)
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{
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utils::memory_decommit(g_stat_addr + addr, size);
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}
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}
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bool check_addr(u32 addr, u32 size, u8 flags)
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{
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for (u32 i = addr / 4096; i <= (addr + size - 1) / 4096; i++)
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{
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if (UNLIKELY((g_pages[i % g_pages.size()].flags & flags) != flags))
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{
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return false;
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}
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}
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return true;
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}
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u32 alloc(u32 size, memory_location_t location, u32 align)
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{
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const auto block = get(location);
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if (!block)
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{
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fmt::throw_exception("Invalid memory location (%u)" HERE, (uint)location);
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}
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return block->alloc(size, align);
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}
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u32 falloc(u32 addr, u32 size, memory_location_t location)
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{
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const auto block = get(location, addr);
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if (!block)
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{
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fmt::throw_exception("Invalid memory location (%u, addr=0x%x)" HERE, (uint)location, addr);
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}
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return block->falloc(addr, size);
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}
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u32 dealloc(u32 addr, memory_location_t location)
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{
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const auto block = get(location, addr);
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if (!block)
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{
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fmt::throw_exception("Invalid memory location (%u, addr=0x%x)" HERE, (uint)location, addr);
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}
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return block->dealloc(addr);
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}
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void dealloc_verbose_nothrow(u32 addr, memory_location_t location) noexcept
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{
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const auto block = get(location, addr);
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if (!block)
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{
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LOG_ERROR(MEMORY, "vm::dealloc(): invalid memory location (%u, addr=0x%x)\n", (uint)location, addr);
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return;
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}
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if (!block->dealloc(addr))
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{
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LOG_ERROR(MEMORY, "vm::dealloc(): deallocation failed (addr=0x%x)\n", addr);
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return;
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}
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}
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bool block_t::try_alloc(u32 addr, u8 flags, std::shared_ptr<utils::shm>&& shm)
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{
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const u32 size = shm->size();
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// Check if memory area is already mapped
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for (u32 i = addr / 4096; i <= (addr + size - 1) / 4096; i++)
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{
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if (g_pages[i].flags)
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{
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return false;
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}
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}
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// Map "real" memory pages
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_page_map(addr, flags, *shm);
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// Add entry
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m_map[addr] = std::move(shm);
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return true;
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}
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block_t::block_t(u32 addr, u32 size, u64 flags)
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: addr(addr)
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, size(size)
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, flags(flags)
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{
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// Allocate compressed reservation info area (avoid SPU MMIO area)
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if (addr != 0xe0000000)
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{
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utils::memory_commit(g_reservations + addr / 16, size / 16);
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utils::memory_commit(g_reservations2 + addr / 16, size / 16);
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}
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else
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{
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// RawSPU LS
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for (u32 i = 0; i < 6; i++)
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{
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utils::memory_commit(g_reservations + addr / 16 + i * 0x10000, 0x4000);
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utils::memory_commit(g_reservations2 + addr / 16 + i * 0x10000, 0x4000);
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}
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}
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}
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block_t::~block_t()
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{
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{
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vm::writer_lock lock(0);
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// Deallocate all memory
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for (auto& entry : m_map)
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{
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_page_unmap(entry.first, *entry.second);
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}
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}
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// Notify rsx to invalidate range (TODO)
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if (const auto rsxthr = fxm::check_unlocked<GSRender>())
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{
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rsxthr->on_notify_memory_unmapped(addr, size);
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}
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}
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u32 block_t::alloc(const u32 orig_size, u32 align, const std::shared_ptr<utils::shm>* src)
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{
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vm::writer_lock lock(0);
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// Align to minimal page size
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const u32 size = ::align(orig_size, 0x10000);
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// Check alignment (it's page allocation, so passing small values there is just silly)
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if (align < 0x10000 || align != (0x80000000u >> cntlz32(align, true)))
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{
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fmt::throw_exception("Invalid alignment (size=0x%x, align=0x%x)" HERE, size, align);
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}
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// Return if size is invalid
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if (!size || size > this->size)
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{
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return 0;
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}
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u8 pflags = page_readable | page_writable;
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if (align >= 0x100000)
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{
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pflags |= page_1m_size;
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}
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else if (align >= 0x10000)
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{
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pflags |= page_64k_size;
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}
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// Create or import shared memory object
|
|
std::shared_ptr<utils::shm> shm = src ? std::shared_ptr<utils::shm>(*src) : std::make_shared<utils::shm>(size);
|
|
|
|
// Search for an appropriate place (unoptimized)
|
|
for (u32 addr = ::align(this->addr, align); addr < this->addr + this->size - 1; addr += align)
|
|
{
|
|
if (try_alloc(addr, pflags, std::move(shm)))
|
|
{
|
|
return addr;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
u32 block_t::falloc(u32 addr, const u32 orig_size, const std::shared_ptr<utils::shm>* src)
|
|
{
|
|
vm::writer_lock lock(0);
|
|
|
|
// align to minimal page size
|
|
const u32 size = ::align(orig_size, 0x10000);
|
|
|
|
// return if addr or size is invalid
|
|
if (!size || size > this->size || addr < this->addr || addr + size - 1 > this->addr + this->size - 1)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
u8 pflags = page_readable | page_writable;
|
|
|
|
if ((flags & SYS_MEMORY_PAGE_SIZE_1M) == SYS_MEMORY_PAGE_SIZE_1M)
|
|
{
|
|
pflags |= page_1m_size;
|
|
}
|
|
else if ((flags & SYS_MEMORY_PAGE_SIZE_64K) == SYS_MEMORY_PAGE_SIZE_64K)
|
|
{
|
|
pflags |= page_64k_size;
|
|
}
|
|
|
|
if (!try_alloc(addr, pflags, src ? std::shared_ptr<utils::shm>(*src) : std::make_shared<utils::shm>(size)))
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
return addr;
|
|
}
|
|
|
|
u32 block_t::dealloc(u32 addr, const std::shared_ptr<utils::shm>* src)
|
|
{
|
|
u32 result = 0;
|
|
{
|
|
vm::writer_lock lock(0);
|
|
|
|
const auto found = m_map.find(addr);
|
|
|
|
if (found == m_map.end())
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
if (src && found->second.get() != src->get())
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
result = found->second->size();
|
|
|
|
// Unmap "real" memory pages
|
|
_page_unmap(addr, *found->second);
|
|
|
|
// Remove entry
|
|
m_map.erase(found);
|
|
}
|
|
|
|
// Notify rsx to invalidate range (TODO)
|
|
if (const auto rsxthr = fxm::check_unlocked<GSRender>())
|
|
{
|
|
rsxthr->on_notify_memory_unmapped(addr, result);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
std::pair<const u32, std::shared_ptr<utils::shm>> block_t::get(u32 addr, u32 size)
|
|
{
|
|
if (addr < this->addr || std::max<u32>(size, addr - this->addr + size) >= this->size)
|
|
{
|
|
return {addr, nullptr};
|
|
}
|
|
|
|
vm::reader_lock lock;
|
|
|
|
const auto upper = m_map.upper_bound(addr);
|
|
|
|
if (upper == m_map.begin())
|
|
{
|
|
return {addr, nullptr};
|
|
}
|
|
|
|
const auto found = std::prev(upper);
|
|
|
|
// Exact address condition (size == 0)
|
|
if (size == 0 && found->first != addr)
|
|
{
|
|
return {addr, nullptr};
|
|
}
|
|
|
|
// Range check
|
|
if (std::max<u32>(size, addr - found->first + size) > found->second->size())
|
|
{
|
|
return {addr, nullptr};
|
|
}
|
|
|
|
return *found;
|
|
}
|
|
|
|
u32 block_t::imp_used(const vm::writer_lock&)
|
|
{
|
|
u32 result = 0;
|
|
|
|
for (auto& entry : m_map)
|
|
{
|
|
result += entry.second->size();
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
u32 block_t::used()
|
|
{
|
|
vm::writer_lock lock(0);
|
|
|
|
return imp_used(lock);
|
|
}
|
|
|
|
std::shared_ptr<block_t> map(u32 addr, u32 size, u64 flags)
|
|
{
|
|
vm::writer_lock lock(0);
|
|
|
|
if (!size || (size | addr) % 4096)
|
|
{
|
|
fmt::throw_exception("Invalid arguments (addr=0x%x, size=0x%x)" HERE, addr, size);
|
|
}
|
|
|
|
for (auto& block : g_locations)
|
|
{
|
|
if (block->addr >= addr && block->addr <= addr + size - 1)
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
if (addr >= block->addr && addr <= block->addr + block->size - 1)
|
|
{
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
for (u32 i = addr / 4096; i < addr / 4096 + size / 4096; i++)
|
|
{
|
|
if (g_pages[i].flags)
|
|
{
|
|
fmt::throw_exception("Unexpected pages allocated (current_addr=0x%x)" HERE, i * 4096);
|
|
}
|
|
}
|
|
|
|
auto block = std::make_shared<block_t>(addr, size, flags);
|
|
|
|
g_locations.emplace_back(block);
|
|
|
|
return block;
|
|
}
|
|
|
|
std::shared_ptr<block_t> unmap(u32 addr, bool must_be_empty)
|
|
{
|
|
vm::writer_lock lock(0);
|
|
|
|
for (auto it = g_locations.begin(); it != g_locations.end(); it++)
|
|
{
|
|
if (*it && (*it)->addr == addr)
|
|
{
|
|
if (must_be_empty && (!it->unique() || (*it)->imp_used(lock)))
|
|
{
|
|
return *it;
|
|
}
|
|
|
|
auto block = std::move(*it);
|
|
g_locations.erase(it);
|
|
return block;
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
std::shared_ptr<block_t> get(memory_location_t location, u32 addr)
|
|
{
|
|
vm::reader_lock lock;
|
|
|
|
if (location != any)
|
|
{
|
|
// return selected location
|
|
if (location < g_locations.size())
|
|
{
|
|
return g_locations[location];
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
// search location by address
|
|
for (auto& block : g_locations)
|
|
{
|
|
if (addr >= block->addr && addr <= block->addr + block->size - 1)
|
|
{
|
|
return block;
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
inline namespace ps3_
|
|
{
|
|
void init()
|
|
{
|
|
g_locations =
|
|
{
|
|
std::make_shared<block_t>(0x00010000, 0x1FFF0000), // main
|
|
std::make_shared<block_t>(0x20000000, 0x10000000), // user
|
|
std::make_shared<block_t>(0xC0000000, 0x10000000), // video
|
|
std::make_shared<block_t>(0xD0000000, 0x10000000), // stack
|
|
std::make_shared<block_t>(0xE0000000, 0x20000000), // SPU reserved
|
|
std::make_shared<block_t>(0x30000000, 0x10000000), // main extend
|
|
};
|
|
}
|
|
}
|
|
|
|
void close()
|
|
{
|
|
g_locations.clear();
|
|
|
|
utils::memory_decommit(g_base_addr, 0x100000000);
|
|
utils::memory_decommit(g_exec_addr, 0x100000000);
|
|
utils::memory_decommit(g_stat_addr, 0x100000000);
|
|
utils::memory_decommit(g_reservations, 0x100000000);
|
|
}
|
|
}
|
|
|
|
void fmt_class_string<vm::_ptr_base<const void>>::format(std::string& out, u64 arg)
|
|
{
|
|
fmt_class_string<u32>::format(out, arg);
|
|
}
|
|
|
|
void fmt_class_string<vm::_ptr_base<const char>>::format(std::string& out, u64 arg)
|
|
{
|
|
// Special case (may be allowed for some arguments)
|
|
if (arg == 0)
|
|
{
|
|
out += u8"«NULL»";
|
|
return;
|
|
}
|
|
|
|
// Filter certainly invalid addresses (TODO)
|
|
if (arg < 0x10000 || arg >= 0xf0000000)
|
|
{
|
|
out += u8"«INVALID_ADDRESS:";
|
|
fmt_class_string<u32>::format(out, arg);
|
|
out += u8"»";
|
|
return;
|
|
}
|
|
|
|
const auto start = out.size();
|
|
|
|
out += u8"“";
|
|
|
|
for (vm::_ptr_base<const volatile char> ptr = vm::cast(arg);; ptr++)
|
|
{
|
|
if (!vm::check_addr(ptr.addr()))
|
|
{
|
|
// TODO: optimize checks
|
|
out.resize(start);
|
|
out += u8"«INVALID_ADDRESS:";
|
|
fmt_class_string<u32>::format(out, arg);
|
|
out += u8"»";
|
|
return;
|
|
}
|
|
|
|
if (const char ch = *ptr)
|
|
{
|
|
out += ch;
|
|
}
|
|
else
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
out += u8"”";
|
|
}
|