diff options
Diffstat (limited to 'arch/sparc/isa_traits.hh')
| -rw-r--r-- | arch/sparc/isa_traits.hh | 200 |
1 files changed, 91 insertions, 109 deletions
diff --git a/arch/sparc/isa_traits.hh b/arch/sparc/isa_traits.hh index 5a58bbaef..c592a05ed 100644 --- a/arch/sparc/isa_traits.hh +++ b/arch/sparc/isa_traits.hh @@ -57,28 +57,39 @@ class StaticInstPtr; namespace SparcISA { typedef uint32_t MachInst; - typedef uint64_t Addr; + typedef uint64_t ExtMachInst; typedef uint8_t RegIndex; - enum - { - MemoryEnd = 0xffffffffffffffffULL, - - NumFloatRegs = 32, - NumMiscRegs = 32, - - MaxRegsOfAnyType = 32, - // Static instruction parameters - MaxInstSrcRegs = 3, - MaxInstDestRegs = 2, + const int NumFloatRegs = 32; + const int NumMiscRegs = 32; + + const int MaxRegsOfAnyType = 32; + const int // Static instruction parameters + const int MaxInstSrcRegs = 3; + const int MaxInstDestRegs = 2; + + const int // Maximum trap level + const int MaxTL = 4; + const int + const int // semantically meaningful register indices + const int ZeroReg = 0; // architecturally meaningful + const int // the rest of these depend on the ABI + const int StackPointerReg = 14; + const int ReturnAddressReg = 31; + const int ReturnValueReg = 24; + const int FramePointerReg = 30; + const int ArgumentReg0 = 24; + const int ArgumentReg1 = 25; + const int ArgumentReg2 = 26; + const int ArgumentReg3 = 27; + const int ArgumentReg4 = 28; + const int ArgumentReg5 = 29; + const int + const int //8K. This value is implmentation specific; and should probably + const int //be somewhere else. + const int LogVMPageSize = 13; + const int VMPageSize = (1 << LogVMPageSize); - // Maximum trap level - MaxTL = 4, - - // semantically meaningful register indices - ZeroReg = 0 // architecturally meaningful - // the rest of these depend on the ABI - }; typedef uint64_t IntReg; class IntRegFile @@ -99,6 +110,12 @@ namespace SparcISA void unserialize(Checkpoint *cp, const std::string §ion); + typedef float float32_t; + typedef double float64_t; + //FIXME This actually usually refers to a 10 byte float, rather than a + //16 byte float as required. This data type may have to be emulated. + typedef long double float128_t; + class FloatRegFile { private: @@ -106,7 +123,7 @@ namespace SparcISA //is aligned correctly in memory union { - long double rawRegs[16]; + float128_t rawRegs[16]; uint64_t regDump[32]; }; class QuadRegs @@ -115,7 +132,7 @@ namespace SparcISA FloatRegFile * parent; public: QuadRegs(FloatRegFile * p) : parent(p) {;} - long double & operator [] (RegIndex index) + float128_t & operator [] (RegIndex index) { //Quad floats are index by the single //precision register the start on, @@ -130,13 +147,13 @@ namespace SparcISA FloatRegFile * parent; public: DoubleRegs(FloatRegFile * p) : parent(p) {;} - double & operator [] (RegIndex index) + float64_t & operator [] (RegIndex index) { //Double floats are index by the single //precision register the start on, //and only 32 should be accessed index = (index >> 1) & 0x1F; - return ((double *)parent->rawRegs)[index]; + return ((float64_t *)parent->rawRegs)[index]; } }; class SingleRegs @@ -145,11 +162,11 @@ namespace SparcISA FloatRegFile * parent; public: SingleRegs(FloatRegFile * p) : parent(p) {;} - float & operator [] (RegIndex index) + float32_t & operator [] (RegIndex index) { //Only 32 single floats should be accessed index &= 0x1F; - return ((float *)parent->rawRegs)[index]; + return ((float32_t *)parent->rawRegs)[index]; } }; public: @@ -169,7 +186,7 @@ namespace SparcISA // The control registers, broken out into fields class MiscRegFile { - public: + private: union { uint16_t pstate; // Process State Register @@ -193,7 +210,7 @@ namespace SparcISA struct { uint64_t value:32; // The actual value stored in y - const uint64_t :32; // reserved bits + uint64_t :32; // reserved bits } yFields; }; uint8_t pil; // Process Interrupt Register @@ -214,8 +231,8 @@ namespace SparcISA uint8_t v:1; // Overflow uint8_t z:1; // Zero uint8_t n:1; // Negative - } iccFields:4; - } :4; + } iccFields; + }; union { uint8_t xcc:4; // 64-bit condition codes @@ -225,8 +242,8 @@ namespace SparcISA uint8_t v:1; // Overflow uint8_t z:1; // Zero uint8_t n:1; // Negative - } xccFields:4; - } :4; + } xccFields; + }; } ccrFields; }; uint8_t asi; // Address Space Identifier @@ -242,9 +259,9 @@ namespace SparcISA { //Values are from previous trap level uint64_t cwp:5; // Current Window Pointer - const uint64_t :2; // Reserved bits + uint64_t :2; // Reserved bits uint64_t pstate:10; // Process State - const uint64_t :6; // Reserved bits + uint64_t :6; // Reserved bits uint64_t asi:8; // Address Space Identifier uint64_t ccr:8; // Condition Code Register } tstateFields[MaxTL]; @@ -257,7 +274,7 @@ namespace SparcISA uint64_t counter:63; // Clock-tick count uint64_t npt:1; // Non-priveleged trap } tickFields; - } + }; uint8_t cansave; // Savable windows uint8_t canrestore; // Restorable windows uint8_t otherwin; // Other windows @@ -279,9 +296,9 @@ namespace SparcISA struct { uint64_t maxwin:5; // Max CWP value - const uint64_t :2; // Reserved bits + uint64_t :2; // Reserved bits uint64_t maxtl:8; // Maximum trap level - const uint64_t :8; // Reserved bits + uint64_t :8; // Reserved bits uint64_t mask:8; // Processor mask set revision number uint64_t impl:16; // Implementation identification number uint64_t manuf:16; // Manufacturer code @@ -302,8 +319,8 @@ namespace SparcISA uint64_t ufc:1; // Underflow uint64_t ofc:1; // Overflow uint64_t nvc:1; // Invalid operand - } cexecFields:5; - } :5; + } cexecFields; + }; union { uint64_t aexc:5; // Accrued exception @@ -314,15 +331,15 @@ namespace SparcISA uint64_t ufc:1; // Underflow uint64_t ofc:1; // Overflow uint64_t nvc:1; // Invalid operand - } aexecFields:5; - } :5; + } aexecFields; + }; uint64_t fcc0:2; // Floating-Point condtion codes - const uint64_t :1; // Reserved bits + uint64_t :1; // Reserved bits uint64_t qne:1; // Deferred trap queue not empty // with no queue, it should read 0 uint64_t ftt:3; // Floating-Point trap type uint64_t ver:3; // Version (of the FPU) - const uint64_t :2; // Reserved bits + uint64_t :2; // Reserved bits uint64_t ns:1; // Nonstandard floating point union { @@ -334,16 +351,16 @@ namespace SparcISA uint64_t ufm:1; // Underflow uint64_t ofm:1; // Overflow uint64_t nvm:1; // Invalid operand - } temFields:5; - } :5; - const uint64_t :2; // Reserved bits + } temFields; + }; + uint64_t :2; // Reserved bits uint64_t rd:2; // Rounding direction uint64_t fcc1:2; // Floating-Point condition codes uint64_t fcc2:2; // Floating-Point condition codes uint64_t fcc3:2; // Floating-Point condition codes - const uint64_t :26; // Reserved bits + uint64_t :26; // Reserved bits } fsrFields; - } + }; union { uint8_t fprs; // Floating-Point Register State @@ -351,63 +368,34 @@ namespace SparcISA { uint8_t dl:1; // Dirty lower uint8_t du:1; // Dirty upper - fef:1; // FPRS enable floating-Point + uint8_t fef:1; // FPRS enable floating-Point } fprsFields; }; - void serialize(std::ostream & os) - { - SERIALIZE_SCALAR(pstate); - SERIAlIZE_SCALAR(tba); - SERIALIZE_SCALAR(y); - SERIALIZE_SCALAR(pil); - SERIALIZE_SCALAR(cwp); - SERIALIZE_ARRAY(tt, MaxTL); - SERIALIZE_SCALAR(ccr); - SERIALIZE_SCALAR(asi); - SERIALIZE_SCALAR(tl); - SERIALIZE_SCALAR(tpc); - SERIALIZE_SCALAR(tnpc); - SERIALIZE_ARRAY(tstate, MaxTL); - SERIALIZE_SCALAR(tick); - SERIALIZE_SCALAR(cansave); - SERIALIZE_SCALAR(canrestore); - SERIALIZE_SCALAR(otherwin); - SERIALIZE_SCALAR(cleanwin); - SERIALIZE_SCALAR(wstate); - SERIALIZE_SCALAR(ver); - SERIALIZE_SCALAR(fsr); - SERIALIZE_SCALAR(fprs); - } - - void unserialize(Checkpoint &* cp, std::string & section) - { - UNSERIALIZE_SCALAR(pstate); - UNSERIAlIZE_SCALAR(tba); - UNSERIALIZE_SCALAR(y); - UNSERIALIZE_SCALAR(pil); - UNSERIALIZE_SCALAR(cwp); - UNSERIALIZE_ARRAY(tt, MaxTL); - UNSERIALIZE_SCALAR(ccr); - UNSERIALIZE_SCALAR(asi); - UNSERIALIZE_SCALAR(tl); - UNSERIALIZE_SCALAR(tpc); - UNSERIALIZE_SCALAR(tnpc); - UNSERIALIZE_ARRAY(tstate, MaxTL); - UNSERIALIZE_SCALAR(tick); - UNSERIALIZE_SCALAR(cansave); - UNSERIALIZE_SCALAR(canrestore); - UNSERIALIZE_SCALAR(otherwin); - UNSERIALIZE_SCALAR(cleanwin); - UNSERIALIZE_SCALAR(wstate); - UNSERIALIZE_SCALAR(ver); - UNSERIALIZE_SCALAR(fsr); - UNSERIALIZE_SCALAR(fprs); - } + public: + MiscReg readReg(int misc_reg); + + MiscReg readRegWithEffect(int misc_reg, Fault &fault, ExecContext *xc); + + Fault setReg(int misc_reg, const MiscReg &val); + + Fault setRegWithEffect(int misc_reg, const MiscReg &val, + ExecContext *xc); + + void serialize(std::ostream & os); + + void unserialize(Checkpoint * cp, std::string & section); }; typedef union { + float32_t singReg; + float64_t doubReg; + float128_t quadReg; + } FloatReg; + + typedef union + { IntReg intreg; FloatReg fpreg; MiscReg ctrlreg; @@ -426,25 +414,25 @@ namespace SparcISA void unserialize(Checkpoint *cp, const std::string §ion); }; - static StaticInstPtr decodeInst(MachInst); + StaticInstPtr decodeInst(MachInst); // return a no-op instruction... used for instruction fetch faults - static const MachInst NoopMachInst; + extern const MachInst NoopMachInst; // Instruction address compression hooks - static inline Addr realPCToFetchPC(const Addr &addr) + inline Addr realPCToFetchPC(const Addr &addr) { return addr; } - static inline Addr fetchPCToRealPC(const Addr &addr) + inline Addr fetchPCToRealPC(const Addr &addr) { return addr; } // the size of "fetched" instructions (not necessarily the size // of real instructions for PISA) - static inline size_t fetchInstSize() + inline size_t fetchInstSize() { return sizeof(MachInst); } @@ -454,15 +442,9 @@ namespace SparcISA * @param xc The execution context. */ template <class XC> - static void zeroRegisters(XC *xc); + void zeroRegisters(XC *xc); }; -const int VMPageSize = TheISA::VMPageSize; -const int LogVMPageSize = TheISA::LogVMPageSize; -const int ZeroReg = TheISA::ZeroReg; -const int BranchPredAddrShiftAmt = TheISA::BranchPredAddrShiftAmt; -const int MaxAddr = (Addr)-1; - #if !FULL_SYSTEM class SyscallReturn { |