1 files changed, 131 insertions, 0 deletions
diff --git a/src/arch/mips/isa/formats/int.isa b/src/arch/mips/isa/formats/int.isa
new file mode 100644
index 000000000..7d38b9ff5
--- /dev/null
+++ b/src/arch/mips/isa/formats/int.isa
@@ -0,0 +1,131 @@
+// -*- mode:c++ -*-
+
+////////////////////////////////////////////////////////////////////
+//
+// Integer operate instructions
+//
+
+//Outputs to decoder.hh
+output header {{
+#include <iostream>
+    using namespace std;
+        /**
+         * Base class for integer operations.
+         */
+        class IntOp : public MipsStaticInst
+        {
+                protected:
+
+                /// Constructor
+                IntOp(const char *mnem, MachInst _machInst, OpClass __opClass) :
+                                MipsStaticInst(mnem, _machInst, __opClass)
+                {
+                }
+
+                std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
+        };
+
+        class IntImmOp : public MipsStaticInst
+        {
+                protected:
+
+                int16_t imm;
+                int32_t sextImm;
+                uint32_t zextImm;
+
+                /// Constructor
+                IntImmOp(const char *mnem, MachInst _machInst, OpClass __opClass) :
+                    MipsStaticInst(mnem, _machInst, __opClass),imm(INTIMM),
+                    sextImm(INTIMM),zextImm(0x0000FFFF & INTIMM)
+                {
+                    //If Bit 15 is 1 then Sign Extend
+                    int32_t temp = sextImm & 0x00008000;
+                    if (temp > 0 && mnemonic != "lui") {
+                        sextImm |= 0xFFFF0000;
+                    }
+                }
+
+                std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
+
+
+        };
+
+}};
+
+//Outputs to decoder.cc
+output decoder {{
+        std::string IntOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
+        {
+            std::stringstream ss;
+
+            ccprintf(ss, "%-10s ", mnemonic);
+
+            // just print the first dest... if there's a second one,
+            // it's generally implicit
+            if (_numDestRegs > 0) {
+                printReg(ss, _destRegIdx[0]);
+                ss << ",";
+            }
+
+            // just print the first two source regs... if there's
+            // a third one, it's a read-modify-write dest (Rc),
+            // e.g. for CMOVxx
+            if (_numSrcRegs > 0) {
+                printReg(ss, _srcRegIdx[0]);
+            }
+
+            if (_numSrcRegs > 1) {
+                ss << ",";
+                printReg(ss, _srcRegIdx[1]);
+            }
+
+            return ss.str();
+        }
+
+        std::string IntImmOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
+        {
+            std::stringstream ss;
+
+            ccprintf(ss, "%-10s ", mnemonic);
+
+            if (_numDestRegs > 0) {
+                printReg(ss, _destRegIdx[0]);
+            }
+
+            ss << ",";
+
+            if (_numSrcRegs > 0) {
+                printReg(ss, _srcRegIdx[0]);
+                ss << ",";
+            }
+
+            if( mnemonic == "lui")
+                ccprintf(ss, "%08p ", sextImm);
+            else
+                ss << (int) sextImm;
+
+            return ss.str();
+        }
+
+}};
+
+//Used by decoder.isa
+def format IntOp(code, *opt_flags) {{
+        orig_code = code
+        cblk = CodeBlock(code)
+
+        # Figure out if we are creating a IntImmOp or a IntOp
+        # by looking at the instruction name
+        iop = InstObjParams(name, Name, 'IntOp', cblk, opt_flags)
+        strlen = len(name)
+        if name[strlen-1] == 'i' or name[strlen-2:] == 'iu':
+            iop = InstObjParams(name, Name, 'IntImmOp', cblk, opt_flags)
+
+        header_output = BasicDeclare.subst(iop)
+        decoder_output = BasicConstructor.subst(iop)
+        decode_block = OperateNopCheckDecode.subst(iop)
+        exec_output = BasicExecute.subst(iop)
+}};
+
+
+