prep cache impl

.clangd

@@ -0,0 +1,4 @@
+CompileFlags:
+  CompilationDatabase: build/
+Completion:
+  HeaderInsertion: Never

src/backend/Core.cpp

@@ -5,132 +5,130 @@
 
 namespace n64 {
 Core::Core() {
-  const auto selectedCpu = Options::GetInstance().GetValue<std::string>("cpu", "type");
-  if (selectedCpu == "interpreter") {
-    cpuType = Interpreted;
-    cpu = std::make_unique<Interpreter>(*mem, regs);
-  } else if(selectedCpu == "jit") {
-    #ifndef __aarch64__
-    cpuType = DynamicRecompiler;
-    cpu = std::make_unique<JIT>(*mem, regs);
-    #else
-    panic("JIT currently unsupported on aarch64");
-    #endif
-  } else {
-    panic("Unimplemented CPU type");
-  }
+    const auto selectedCpu = Options::GetInstance().GetValue<std::string>("cpu", "type");
+    if (selectedCpu == "interpreter") {
+        cpuType = Interpreted;
+        cpu = std::make_unique<Interpreter>(*mem, regs);
+    } else if (selectedCpu == "jit") {
+#ifndef __aarch64__
+        cpuType = DynamicRecompiler;
+        cpu = std::make_unique<JIT>(*mem, regs);
+#else
+        panic("JIT currently unsupported on aarch64");
+#endif
+    } else {
+        panic("Unimplemented CPU type");
+    }
 }
 
 void Core::Stop() {
-  pause = true;
-  romLoaded = false;
-  Reset();
+    pause = true;
+    romLoaded = false;
+    Reset();
 }
 
 void Core::Reset() {
-  regs.Reset();
-  mem->Reset();
-  cpu->Reset();
-  if(romLoaded)
-    mem->mmio.si.pif.Execute();
+    regs.Reset();
+    mem->Reset();
+    cpu->Reset();
+    if (romLoaded)
+        mem->mmio.si.pif.Execute();
 }
 
 void Core::LoadTAS(const fs::path &path) const { mem->mmio.si.pif.movie.Load(path); }
 
 void Core::LoadROM(const std::string &rom_) {
-  Stop();
-  rom = rom_;
-  
-  std::string archive_types[] = {".zip", ".7z", ".rar", ".tar"};
-  
-  auto extension = fs::path(rom).extension().string();
-  const bool isArchive = std::ranges::any_of(archive_types, [&extension](const auto &e) { return e == extension; });
-  
-  mem->LoadROM(isArchive, rom);
-  GameDB::match();
-  if (mem->rom.gameNameDB.empty()) {
-    mem->rom.gameNameDB = fs::path(rom).stem().string();
-  }
-  mem->mmio.vi.isPal = mem->IsROMPAL();
-  mem->mmio.si.pif.InitDevices(mem->saveType);
-  mem->mmio.si.pif.mempakPath = rom;
-  mem->mmio.si.pif.LoadEeprom(mem->saveType, rom);
-  mem->flash.Load(mem->saveType, rom);
-  mem->LoadSRAM(mem->saveType, rom);
-  mem->mmio.si.pif.Execute();
-  pause = false;
-  romLoaded = true;
+    Stop();
+    rom = rom_;
+
+    std::string archive_types[] = {".zip", ".7z", ".rar", ".tar"};
+
+    auto extension = fs::path(rom).extension().string();
+    const bool isArchive = std::ranges::any_of(archive_types, [&extension](const auto &e) { return e == extension; });
+
+    mem->LoadROM(isArchive, rom);
+    GameDB::match();
+    if (mem->rom.gameNameDB.empty()) {
+        mem->rom.gameNameDB = fs::path(rom).stem().string();
+    }
+    mem->mmio.vi.isPal = mem->IsROMPAL();
+    mem->mmio.si.pif.InitDevices(mem->saveType);
+    mem->mmio.si.pif.mempakPath = rom;
+    mem->mmio.si.pif.LoadEeprom(mem->saveType, rom);
+    mem->flash.Load(mem->saveType, rom);
+    mem->LoadSRAM(mem->saveType, rom);
+    mem->mmio.si.pif.Execute();
+    pause = false;
+    romLoaded = true;
 }
 
-u32 Core::StepCPU() {
-  return cpu->Step() + regs.PopStalledCycles();
-}
+u32 Core::StepCPU() { return cpu->Step() + regs.PopStalledCycles(); }
 
 void Core::StepRSP(const u32 cpuCycles) {
-  MMIO &mmio = mem->mmio;
+    MMIO &mmio = mem->mmio;
 
-  if (mmio.rsp.spStatus.halt) {
-    regs.steps = 0;
-    mmio.rsp.steps = 0;
-    return;
-  }
+    if (mmio.rsp.spStatus.halt) {
+        regs.steps = 0;
+        mmio.rsp.steps = 0;
+        return;
+    }
 
-  static constexpr u32 cpuRatio = 3, rspRatio = 2;
-  
-  regs.steps += cpuCycles;
-  const auto sets = regs.steps / cpuRatio;
-  mmio.rsp.steps += sets * rspRatio;
-  regs.steps -= sets * cpuRatio;
+    static constexpr u32 cpuRatio = 3, rspRatio = 2;
 
-  while (mmio.rsp.steps > 0) {
-    mmio.rsp.steps--;
-    mmio.rsp.Step();
-  }
+    regs.steps += cpuCycles;
+    const auto sets = regs.steps / cpuRatio;
+    mmio.rsp.steps += sets * rspRatio;
+    regs.steps -= sets * cpuRatio;
+
+    while (mmio.rsp.steps > 0) {
+        mmio.rsp.steps--;
+        mmio.rsp.Step();
+    }
 }
 
 void Core::Run(const float volumeL, const float volumeR) {
-  MMIO &mmio = mem->mmio;
+    MMIO &mmio = mem->mmio;
 
-  bool broken = false;
-  for (int field = 0; field < mmio.vi.numFields; field++) {
-    u32 frameCycles = 0;
-    for (int i = 0; i < mmio.vi.numHalflines; i++) {
-      mmio.vi.current = (i << 1) + field;
+    bool broken = false;
+    for (int field = 0; field < mmio.vi.numFields; field++) {
+        u32 frameCycles = 0;
+        for (int i = 0; i < mmio.vi.numHalflines; i++) {
+            mmio.vi.current = (i << 1) + field;
 
-      if ((mmio.vi.current & 0x3FE) == mmio.vi.intr) {
-        mmio.mi.InterruptRaise(MI::Interrupt::VI);
-      }
+            if ((mmio.vi.current & 0x3FE) == mmio.vi.intr) {
+                mmio.mi.InterruptRaise(MI::Interrupt::VI);
+            }
 
-      while(cycles < mem->mmio.vi.cyclesPerHalfline) {
-        const u32 taken = StepCPU();
-        cycles += taken;
+            while (cycles < mem->mmio.vi.cyclesPerHalfline) {
+                const u32 taken = StepCPU();
+                cycles += taken;
 
-        if((broken = breakpoints.contains(regs.nextPC)))
-          break;
+                if ((broken = breakpoints.contains(regs.nextPC)))
+                    break;
 
-        StepRSP(taken);
-        frameCycles += taken;
-        Scheduler::GetInstance().Tick(taken);
-      }
+                StepRSP(taken);
+                frameCycles += taken;
+                Scheduler::GetInstance().Tick(taken);
+            }
 
-      if(broken)
-        break;
+            if (broken)
+                break;
 
-      cycles -= mmio.vi.cyclesPerHalfline;
+            cycles -= mmio.vi.cyclesPerHalfline;
+        }
+
+        if (broken)
+            break;
+
+        if ((mmio.vi.current & 0x3FE) == mmio.vi.intr) {
+            mmio.mi.InterruptRaise(MI::Interrupt::VI);
+        }
+
+        mmio.ai.Step(frameCycles, volumeL, volumeR);
+        Scheduler::GetInstance().Tick(frameCycles);
     }
 
-    if(broken)
-      break;
-
-    if ((mmio.vi.current & 0x3FE) == mmio.vi.intr) {
-      mmio.mi.InterruptRaise(MI::Interrupt::VI);
-    }
-
-    mmio.ai.Step(frameCycles, volumeL, volumeR);
-    Scheduler::GetInstance().Tick(frameCycles);
-  }
-
-  if(broken)
-    pause = true;
+    if (broken)
+        pause = true;
 }
 } // namespace n64

src/backend/core/BaseCPU.hpp

@@ -4,9 +4,30 @@
 #include <Disassembler.hpp>
 
 namespace n64 {
+struct alignas(32) InstructionCache {
+    bool valid;
+    u32 data[8];
+    u32 ptag;
+
+  private:
+    int GetLineIndex(u64 vaddr) { return (vaddr >> 5) & 0x1FF; }
+    u32 GetLineStart(u64 paddr) { return paddr & ~0x1F; }
+};
+
+struct alignas(32) DataCache {
+    bool valid, dirty;
+    u8 data[16];
+    u32 ptag;
+    int index;
+
+  private:
+    int GetLineIndex(u64 vaddr) { return (vaddr >> 4) & 0x1FF; }
+    u32 GetLineStart(u64 paddr) { return paddr & ~0xF; }
+};
+
 struct BaseCPU {
-  virtual ~BaseCPU() = default;
-  virtual u32 Step() = 0;
-  virtual void Reset() = 0;
+    virtual ~BaseCPU() = default;
+    virtual u32 Step() = 0;
+    virtual void Reset() = 0;
 };
 } // namespace n64

src/common.hpp

@@ -17,19 +17,19 @@ constexpr u32 N64_CPU_FREQ = 93750000;
 #endif
 
 static FORCE_INLINE constexpr u32 GetCyclesPerFrame(bool pal) {
-  if (pal) {
-    return N64_CPU_FREQ / 50;
-  } else {
-    return N64_CPU_FREQ / 60;
-  }
+    if (pal) {
+        return N64_CPU_FREQ / 50;
+    } else {
+        return N64_CPU_FREQ / 60;
+    }
 }
 
 static FORCE_INLINE constexpr u32 GetVideoFrequency(bool pal) {
-  if (pal) {
-    return 49'656'530;
-  } else {
-    return 48'681'812;
-  }
+    if (pal) {
+        return 49'656'530;
+    } else {
+        return 48'681'812;
+    }
 }
 
 #define HALF_ADDRESS(addr) ((addr) ^ 2)