MIO: First tests of (Access through Unified Memory) being conducted

app/src/main/cpp/cosmic/console/intc.cpp

@@ -20,7 +20,8 @@ namespace cosmic::console {
         }
     }
     void IntCInfra::trapIrq(IntControllers in, u8 id) {
-        if (in == EeInt)
+        if (in == EeInt) {
             eeInt.raiseIrq(id);
         }
+    }
 }

app/src/main/cpp/cosmic/engine/ee_timers.cpp

@@ -8,8 +8,10 @@ namespace cosmic::engine {
             scheduler(solver), intc(inte) {
     }
     void EeTimers::resetTimers() {
-        for (u8 tt = {}; tt != timers.size(); tt++) {
-            timers.at(tt) = {};
+        for (u8 chronos = {}; chronos != timers.size(); chronos++) {
+            timers.at(chronos) = {};
+            // Not necessary perhaps, it will depend on the implementation
+            timers[chronos].count = {};
         }
         raiseEvent = scheduler->createSchedTick(false,[this](u8 position, bool ov) {
             timerReached(position, ov);
@@ -25,16 +27,16 @@ namespace cosmic::engine {
         static u8 base{};
 
         base = engine::T0 + raised;
-        auto timer{std::addressof(timers.at(raised))};
+        const auto timer{std::addressof(timers.at(raised))};
         if (!overflow) {
-            bool compare{timer->ctrl.trap.compare};
+            const bool compare{timer->ctrl.trap.compare};
             if (compare) {
                 timer->ctrl.trap.compare = true;
                 intc->trapIrq(console::EeInt, base);
             }
         }
-        bool woutOverflow{!timer->ctrl.trap.overflow};
-        bool shouldTrap{woutOverflow && overflow};
+        const bool woutOverflow{!timer->ctrl.trap.overflow};
+        const bool shouldTrap{woutOverflow && overflow};
         if (shouldTrap) {
             timer->ctrl.trap.overflow = true;
             intc->trapIrq(console::EeInt, base);

app/src/main/cpp/cosmic/engine/ee_timers.h

@@ -7,7 +7,7 @@ namespace cosmic::vm {
     class Scheduler;
 }
 namespace cosmic::engine {
-    struct EeHwTimer {
+    struct HwTimer {
         u32 clocks;
         bool isEnabled;
         u16 count;
@@ -39,6 +39,6 @@ namespace cosmic::engine {
 
         void timerReached(u8 raised, bool overflow);
         vm::CallBackId raiseEvent{};
-        std::array<EeHwTimer, 4> timers;
+        std::array<HwTimer, 4> timers;
     };
 }

app/src/main/cpp/cosmic/mio/blocks.cpp

@@ -44,4 +44,26 @@ namespace cosmic::mio {
             return &soundBlock[address];
         }
     }
+    constexpr u64 megaByte = 1024 * 1024;
+
+    constexpr u64 soundMemory = megaByte * 2;
+    constexpr u64 iopMemory = megaByte * 2;
+    // Allocating 32 megabytes of RAM to the primary CPU
+    constexpr u64 mainMemory = megaByte * 32;
+    GlobalMemory::GlobalMemory() {
+        constexpr std::array<uintptr_t, 3> finalChunk{
+            0, soundMemory, soundMemory + iopMemory
+        };
+        const u64 amountOfBtcRequired{soundMemory + iopMemory + mainMemory};
+        u8* transaction = static_cast<u8*>(
+            mmap(nullptr, amountOfBtcRequired,
+            PROT_READ | PROT_WRITE, MAP_ANONYMOUS, 0, -1));
+
+        umm = os::MappedMemory<u8>{transaction, amountOfBtcRequired};
+        if (!umm) {
+        }
+        soundBlock = os::MappedMemory<u8>{*umm + finalChunk[0], soundMemory};
+        iopBlock = os::MappedMemory<u8>{*umm + finalChunk[1], iopMemory};
+        ramBlock = os::MappedMemory<u8>{*umm + finalChunk[2], mainMemory};
+    }
 }

app/src/main/cpp/cosmic/mio/blocks.h

@@ -11,18 +11,25 @@ namespace cosmic::mio {
 
     class GlobalMemory {
     public:
+        GlobalMemory();
+
         u8* mapVirtAddress(u32 address, RealAddressFrom mkFrom = MainMemory);
         u64 biosSize() {
             return static_cast<u64>(&ramBlock[0x3fffff] - &ramBlock[0]) + 1;
         }
         u8* iopUnaligned(u32 address);
         u8* spu2Unaligned(u32 address);
+
+        void iopSoftClean() {
+            memset(*iopBlock, 0, iopBlock.getBlockSize());
+        }
     private:
         u8* access(u32 address, RealAddressFrom from);
-
-        os::MappedMemory<u8> iopBlock{static_cast<uint64_t>(1024 * 1024 * 2)};
-        os::MappedMemory<u8> soundBlock{static_cast<uint64_t>(1024 * 1024 * 2)};
-        // Allocating 32 megabytes of RAM to the primary CPU
-        os::MappedMemory<u8> ramBlock{static_cast<uint64_t>(1024 * 1024 * 32)};
+        // Our unified memory strategy pointer
+        os::MappedMemory<u8> umm;
+        // Below, all unified memory regions related to console activities
+        os::MappedMemory<u8> iopBlock;
+        os::MappedMemory<u8> soundBlock;
+        os::MappedMemory<u8> ramBlock;
     };
 }

app/src/main/cpp/cosmic/os/mapped.h

@@ -6,7 +6,11 @@ namespace cosmic::os {
     template<typename T>
     struct MappedMemory {
         MappedMemory() = default;
-        MappedMemory<T>(T* address) : managedBlock(address) {}
+        explicit MappedMemory<T>(T* address, u64 sz) :
+            blockSize(sz),
+            managedBlock(address) {
+        }
+        MappedMemory(MappedMemory&) = delete;
 
         MappedMemory<T>(u64 mSize) :
             blockSize(mSize * sizeof(T)),
@@ -33,6 +37,9 @@ namespace cosmic::os {
         void enableDump() {
             madvise(reinterpret_cast<void*>(managedBlock), blockSize, MADV_DODUMP);
         }
+        operator bool() const {
+            return managedBlock != nullptr;
+        }
     private:
         u64 blockSize{};
         T* managedBlock{};

app/src/main/cpp/cosmic/vm/emu_vm.cpp

@@ -87,6 +87,8 @@ namespace cosmic::vm {
         iop->resetIop();
         ioDma->resetIoDma();
         sound->resetSound();
+
+        iop->iopMem->controller->mapped->iopSoftClean();
     }
     void EmuVm::dealWithSyscalls() {
         hle::SyscallOrigin origin{};