moved reel to dedicated folder because it was hogging the cpu folder

src/spider/runtime/reel/InstrReel.cpp

@@ -0,0 +1,77 @@
+#include "InstrReel.hpp"
+
+#include <spider/runtime/cpu/CPU.hpp>
+
+#include <spider/runtime/memory/Types.hpp>
+
+namespace spider {
+
+    // Public Interface //
+
+    InstrReel::InstrReel() : _mem(nullptr), _size(0), _offset(0), _total_size(0) {}
+
+    InstrReel::~InstrReel() {}
+
+    // Instruction abstraction //
+
+    u8 InstrReel::atU8(u64 ip) {
+        // guard against access
+        u64 ip_p = ip - _offset;
+        if(ip_p + 1 > _size) return 0;
+
+        // send byte
+        return _mem[ip];
+    }
+
+    u16 InstrReel::atU16(u64 ip) {
+        // guard against access
+        u64 ip_p = ip - _offset;
+        if(ip_p + 2 > _size) return 0;
+
+        // build a 16-bit big endian number
+        u16 dat;
+        spider::loadLE(&dat, _mem + ip_p);
+        return dat;
+    }
+
+    u32 InstrReel::atU32(u64 ip) {
+        // guard against access
+        u64 ip_p = ip - _offset;
+        if(ip_p + 4 > _size) return 0;
+
+        // build a 32-bit big endian number
+        u32 dat;
+        spider::loadLE(&dat, _mem + ip_p);
+        return dat;
+    }
+
+    u64 InstrReel::atU64(u64 ip) {
+        // guard against access
+        u64 ip_p = ip - _offset;
+        if(ip_p + 8 > _size) return 0;
+
+        // build a 64-bit big endian number
+        u64 dat;
+        spider::loadLE(&dat, _mem + ip_p);
+        return dat;
+    }
+
+    u64 InstrReel::size() {
+        return _total_size;
+    }
+
+    // Static Utils //
+
+    u16 InstrReel::unpackInstr(u16 bcode) {
+        return (bcode >> 5) & 0x1FF;
+    }
+
+    u8 InstrReel::unpackAddrMode(u16 bcode) {
+        return (bcode >> 2) & 0x1F;
+    }
+
+    u8 InstrReel::unpackTypeSize(u16 bcode) {
+        return bcode & 0x3;
+    }
+
+}