Start adding memory stuff

include/cpu_dynarmic.hpp

@@ -3,6 +3,7 @@
 #include "dynarmic/interface/A32/a32.h"
 #include "dynarmic/interface/A32/config.h"
 #include "helpers.hpp"
+#include "memory.hpp"
 
 class MyEnvironment final : public Dynarmic::A32::UserCallbacks {
 public:
@@ -79,9 +80,11 @@ public:
 class CPU {
     MyEnvironment env;
     Dynarmic::A32::Jit jit{ {.callbacks = &env} };
+    Memory& mem;
 
 public:
-    CPU();
+    CPU(Memory& mem);
+    void reset();
 
     void setReg(int index, u32 value) {
         jit.Regs()[index] = value;

include/emulator.hpp

@@ -8,12 +8,14 @@
 
 class Emulator {
     CPU cpu;
+    Memory memory;
     sf::RenderWindow window;
     static constexpr u32 width = 400;
     static constexpr u32 height = 240 * 2; // * 2 because 2 screens
 
 public:
-    Emulator() : window(sf::VideoMode(width, height), "Alber", sf::Style::Default, sf::ContextSettings(0, 0, 0, 4, 3))  {
+    Emulator() : window(sf::VideoMode(width, height), "Alber", sf::Style::Default, sf::ContextSettings(0, 0, 0, 4, 3)),
+                 cpu(memory) {
         reset();
         window.setActive(true);
     }

include/helpers.hpp

@@ -17,8 +17,7 @@ using s16 = std::int16_t;
 using s32 = std::int32_t;
 using s64 = std::int64_t;
 
-class Helpers {
-public:
+namespace Helpers {
     [[noreturn]] static void panic(const char* fmt, ...) {
         std::va_list args;
         va_start(args, fmt);
@@ -133,6 +132,19 @@ public:
     }
 };
 
+// UDLs for memory size values
+constexpr size_t operator""_KB(unsigned long long int x) {
+    return 1024ULL * x;
+}
+
+constexpr size_t operator""_MB(unsigned long long int x) {
+    return 1024_KB * x;
+}
+
+constexpr size_t operator""_GB(unsigned long long int x) {
+    return 1024_MB * x;
+}
+
 // useful macros
 // likely/unlikely
 #ifdef __GNUC__

include/memory.hpp

@@ -0,0 +1,18 @@
+#pragma once
+#include <vector>
+#include "helpers.hpp"
+
+class Memory {
+	u8* fcram;
+
+	// Our dynarmic core uses page tables for reads and writes with 4096 byte pages
+	std::vector<uintptr_t> readTable, writeTable;
+	static constexpr u32 pageShift = 12;
+	static constexpr u32 pageSize = 1 << pageShift;
+	static constexpr u32 pageMask = pageSize - 1;
+
+public:
+	Memory();
+	void* getReadPointer(u32 address);
+	void* getWritePointer(u32 address);
+};