[MIPS] Expose FCSR

Author: m4xw

include/remill/Arch/MIPS/Runtime/State.h

@@ -260,6 +260,11 @@ struct alignas(8) COP0Registers final {
   Reg DESAVE;
 } __attribute__((packed));
 
+struct alignas(8) COP1Registers final {
+  volatile uint64_t _0;
+  Reg FCSR;
+} __attribute__((packed));
+
 struct alignas(8) MIPSState : public ArchState {
   GPR gpr;  // 528 bytes.
 
@@ -276,6 +281,10 @@ struct alignas(8) MIPSState : public ArchState {
   COP0Registers cop0;
 
   uint64_t _3;
+
+  COP1Registers cop1;
+
+  uint64_t _4;
 } __attribute__((packed));
 
 struct State : public MIPSState {};

lib/Arch/Sleigh/MIPSArch.cpp

@@ -309,6 +309,10 @@ class SleighMIPSArch : public ArchBase {
     REG(TAGHI, cop0.TagHi.qword, u64);
     REG(ERRORPC, cop0.ErrorEPC.qword, u64);
     REG(DESAVE, cop0.DESAVE.qword, u64);
+
+    // COP1
+    // TODO: Maybe move fpr here?
+    REG(FCSR, cop1.FCSR.dword, u32);
   }
 
   void