diff options
Diffstat (limited to 'arch/sparc/isa/base.isa')
| -rw-r--r-- | arch/sparc/isa/base.isa | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/arch/sparc/isa/base.isa b/arch/sparc/isa/base.isa deleted file mode 100644 index 8ea11b40e..000000000 --- a/arch/sparc/isa/base.isa +++ /dev/null @@ -1,222 +0,0 @@ -//////////////////////////////////////////////////////////////////// -// -// Base class for sparc instructions, and some support functions -// - -output header {{ - - union CondCodes - { - struct - { - uint8_t c:1; - uint8_t v:1; - uint8_t z:1; - uint8_t n:1; - }; - uint32_t bits; - }; - - enum CondTest - { - Always=0x8, - Never=0x0, - NotEqual=0x9, - Equal=0x1, - Greater=0xA, - LessOrEqual=0x2, - GreaterOrEqual=0xB, - Less=0x3, - GreaterUnsigned=0xC, - LessOrEqualUnsigned=0x4, - CarryClear=0xD, - CarrySet=0x5, - Positive=0xE, - Negative=0x6, - OverflowClear=0xF, - OverflowSet=0x7 - }; - - extern char * CondTestAbbrev[]; - - /** - * Base class for all SPARC static instructions. - */ - class SparcStaticInst : public StaticInst - { - protected: - // Constructor. - SparcStaticInst(const char *mnem, - MachInst _machInst, OpClass __opClass) - : StaticInst(mnem, _machInst, __opClass) - { - } - - std::string generateDisassembly(Addr pc, - const SymbolTable *symtab) const; - - void printReg(std::ostream &os, int reg) const; - }; - - bool passesCondition(uint32_t codes, uint32_t condition); - - inline int64_t sign_ext(uint64_t data, int origWidth) - { - int shiftAmount = 64 - origWidth; - return (((int64_t)data) << shiftAmount) >> shiftAmount; - } -}}; - -output decoder {{ - - char * CondTestAbbrev[] = - { - "nev", //Never - "e", //Equal - "le", //Less or Equal - "l", //Less - "leu", //Less or Equal Unsigned - "c", //Carry set - "n", //Negative - "o", //Overflow set - "a", //Always - "ne", //Not Equal - "g", //Greater - "ge", //Greater or Equal - "gu", //Greater Unsigned - "cc", //Carry clear - "p", //Positive - "oc" //Overflow Clear - }; -}}; - -def template ROrImmDecode {{ - { - return (I ? (SparcStaticInst *)(new %(class_name)sImm(machInst)) - : (SparcStaticInst *)(new %(class_name)s(machInst))); - } -}}; - -let {{ - def splitOutImm(code): - matcher = re.compile(r'Rs(?P<rNum>\d)_or_imm(?P<iNum>\d+)(?P<typeQual>\.\w+)?') - rOrImmMatch = matcher.search(code) - if (rOrImmMatch == None): - return (False, code, '', '', '') - rString = rOrImmMatch.group("rNum") - if (rOrImmMatch.group("typeQual") != None): - rString += rOrImmMatch.group("typeQual") - iString = rOrImmMatch.group("iNum") - orig_code = code - code = matcher.sub('Rs' + rString, orig_code) - imm_code = matcher.sub('imm', orig_code) - return (True, code, imm_code, rString, iString) -}}; - -output decoder {{ - - inline void printMnemonic(std::ostream &os, const char * mnemonic) - { - ccprintf(os, "\t%s ", mnemonic); - } - - void - SparcStaticInst::printReg(std::ostream &os, int reg) const - { - const int MaxGlobal = 8; - const int MaxOutput = 16; - const int MaxLocal = 24; - const int MaxInput = 32; - if (reg == FramePointerReg) - ccprintf(os, "%%fp"); - else if (reg == StackPointerReg) - ccprintf(os, "%%sp"); - else if(reg < MaxGlobal) - ccprintf(os, "%%g%d", reg); - else if(reg < MaxOutput) - ccprintf(os, "%%o%d", reg - MaxGlobal); - else if(reg < MaxLocal) - ccprintf(os, "%%l%d", reg - MaxOutput); - else if(reg < MaxInput) - ccprintf(os, "%%i%d", reg - MaxLocal); - else { - ccprintf(os, "%%f%d", reg - FP_Base_DepTag); - } - } - - std::string SparcStaticInst::generateDisassembly(Addr pc, - const SymbolTable *symtab) const - { - std::stringstream ss; - - printMnemonic(ss, 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(uint32_t codes, uint32_t condition) - { - CondCodes condCodes; - condCodes.bits = codes; - switch(condition) - { - case Always: - return true; - case Never: - return false; - case NotEqual: - return !condCodes.z; - case Equal: - return condCodes.z; - case Greater: - return !(condCodes.z | (condCodes.n ^ condCodes.v)); - case LessOrEqual: - return condCodes.z | (condCodes.n ^ condCodes.v); - case GreaterOrEqual: - return !(condCodes.n ^ condCodes.v); - case Less: - return (condCodes.n ^ condCodes.v); - case GreaterUnsigned: - return !(condCodes.c | condCodes.z); - case LessOrEqualUnsigned: - return (condCodes.c | condCodes.z); - case CarryClear: - return !condCodes.c; - case CarrySet: - return condCodes.c; - case Positive: - return !condCodes.n; - case Negative: - return condCodes.n; - case OverflowClear: - return !condCodes.v; - case OverflowSet: - return condCodes.v; - } - panic("Tried testing condition nonexistant " - "condition code %d", condition); - } -}}; - |