--- /dev/null
+////////////////////////////////////////////////////////////////////
+//
+// Base class for sparc instructions, and some support functions
+//
+
+output header {{
+ /**
+ * Base class for all SPARC static instructions.
+ */
+ class SparcStaticInst : public StaticInst<SPARCISA>
+ {
+ protected:
+
+ // Constructor.
+ SparcStaticInst(const char *mnem, MachInst _machInst, OpClass __opClass)
+ : StaticInst<SPARCISA>(mnem, _machInst, __opClass)
+ {
+ }
+
+ std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
+ };
+
+ bool passesCondition(struct {uint8_t c:1; uint8_t v:1; uint8_t z:1; uint8_t n:1} codes, uint8_t condition);
+}};
+
+output decoder {{
+
+ std::string SparcStaticInst::generateDisassembly(Addr pc, const SymbolTable *symtab) const
+ {
+ std::stringstream ss;
+
+ ccprintf(ss, "%-10s ", mnemonic);
+
+ // 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]);
+ }
+
+ // just print the first dest... if there's a second one,
+ // it's generally implicit
+ if(_numDestRegs > 0)
+ {
+ if(_numSrcRegs > 0)
+ ss << ",";
+ printReg(ss, _destRegIdx[0]);
+ }
+
+ return ss.str();
+ }
+
+ bool passesCondition(struct {uint8_t c:1; uint8_t v:1; uint8_t z:1; uint8_t n:1} codes, uint8_t condition)
+ {
+ switch(condition)
+ {
+ case 0b1000: return true;
+ case 0b0000: return false;
+ case 0b1001: return !codes.z;
+ case 0b0001: return codes.z;
+ case 0b1010: return !(codes.z | (codes.n ^ codes.v));
+ case 0b0010: return codes.z | (codes.n ^ codes.v);
+ case 0b1011: return !(codes.n ^ codes.v);
+ case 0b0011: return (codes.n ^ codes.v);
+ case 0b1100: return !(codes.c | codes.z);
+ case 0b0100: return (codes.c | codes.z);
+ case 0b1101: return !codes.c;
+ case 0b0101: return codes.c;
+ case 0b1110: return !codes.n;
+ case 0b0110: return codes.n;
+ case 0b1111: return !codes.v;
+ case 0b0111: return codes.v;
+ }
+ }
+}};
+