update PSEMU/Coprocessor.h

PSEMU/Coprocessor.h

@@ -10,10 +10,55 @@
 #include <fstream>
 #include <bitset>
 
-class Coprocessor0 {
-public:
-    uint regs[64];
+using uint = std::uint32_t;
+using ulong = std::uint64_t;
+using byte = std::int8_t;
+using ushort = std::uint16_t;
 
+union Cop0STAT {
+	uint raw;
+	struct {
+		uint IEc : 1;		/* Interrupt Enable (current) */
+		uint KUc : 1;		/* Kernel-User Mode (current) */
+		uint IEp : 1;		/* Interrupt Enable (previous) */
+		uint KUp : 1;		/* Kernel-User Mode (previous) */
+		uint IEo : 1;		/* Interrupt Enable (old) */
+		uint KUo : 1;		/* Kernel-User Mode (old) */
+		uint reserved1 : 2;
+		uint Sw : 2;		/* Software Interrupt Mask */
+		uint Intr : 6;	/* Hardware Interrupt Mask */
+		uint IsC : 1;		/* Isolate Cache */
+		uint reserved2 : 1;
+		uint PZ : 1;		/* Parity Zero */
+		uint reserved3 : 1;
+		uint PE : 1;		/* Parity Error */
+		uint TS : 1;		/* TLB Shutdown */
+		uint BEV : 1;		/* Bootstrap Exception Vectors */
+		uint reserved4 : 5;
+		uint Cu : 4;		/* Coprocessor Usability */
+	};
+};
+
+union Cop0CAUSE {
+	uint raw;
+
+	struct {
+		uint : 2;
+		uint exc_code : 5;	/* Exception Code */
+		uint : 1;
+		uint Sw : 2;		/* Software Interrupts */
+		uint IP : 6;		/* Interrupt Pending */
+		uint : 12;
+		uint CE : 2;		/* Coprocessor Error */
+		uint BT : 1;		/* Branch Taken */
+		uint BD : 1;		/* Branch Delay */
+	};
+};
+
+union Cop0 {
+	uint regs[64];
+
+	struct {
 		uint r0;
 		uint r1;
 		uint r2;
@@ -31,4 +76,6 @@ class Coprocessor0 {
 		uint epc;		/* Exception Program Counter */
 		uint PRId;		/* Processor Revision Identifier */
 		uint reserved[32];
+	};
 };
+