getting floating point stuff now

core/broadway.hpp

@@ -30,12 +30,20 @@ struct broadway {
         ircolib::u32 raw;
     } xer;
 
+    void set_cr(ircolib::u8 value, ircolib::u8 index) {
+        cr &= ~(0xffff << index * 4);
+        cr |= (value << index * 4);
+    }
+
+    bool get_cr_bit(ircolib::u8 index, ircolib::u8 bit) { return (cr >> index * 4) & (1 << (4 - bit)); }
+
     // bat registers indexes
     static constexpr std::size_t BAT_LOWER_OFFSET = 0;
     static constexpr std::size_t BAT_UPPER_OFFSET = 8;
 
     std::array<ircolib::u32, 16> ibat, dbat;
     std::array<ircolib::u32, 32> gpr{};
+    std::array<double, 32> fpr{};
     // ircolib::u32 const_gpr_lookup{};
     csh capstone;
     // Xbyak::CodeGenerator code;
@@ -60,10 +68,21 @@ struct broadway {
     void stwu(ircolib::u32, mem &);
     void sth(ircolib::u32, mem &);
     void lwz(ircolib::u32, mem &);
+    void lfd(ircolib::u32, mem &);
     void bclrx(ircolib::u32);
     void cmpi(ircolib::u32);
     void rlwinm(ircolib::u32);
     void lwzu(ircolib::u32, mem &);
     void rfi(ircolib::u32);
+
+    inline void cr0_update(bool condition, ircolib::s32 result) {
+        if (condition) {
+            const bool b0 = result < 0;
+            const bool b1 = result >= 0;
+            const bool b2 = result == 0;
+            const bool b3 = xer.so;
+            set_cr((b0 << 3) | (b1 << 2) | (b2 << 1) | (b3 << 0), 0);
+        }
+    }
 };
 } // namespace weee::core