diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/arch/sparc/miscregfile.cc | 163 | ||||
| -rw-r--r-- | src/arch/sparc/miscregfile.hh | 1 |
2 files changed, 49 insertions, 115 deletions
diff --git a/src/arch/sparc/miscregfile.cc b/src/arch/sparc/miscregfile.cc index efaa22f67..ada3c18e7 100644 --- a/src/arch/sparc/miscregfile.cc +++ b/src/arch/sparc/miscregfile.cc @@ -221,8 +221,6 @@ MiscReg MiscRegFile::readRegWithEffect(int miscReg, } return tc->getCpuPtr()->curCycle() - tickFields.counter | tickFields.npt << 63; - case MISCREG_PC: - return tc->readPC(); case MISCREG_FPRS: fault = new UnimpFault("FPU not implemented\n"); return 0; @@ -280,112 +278,115 @@ Fault MiscRegFile::setReg(int miscReg, const MiscReg &val) switch (miscReg) { case MISCREG_Y: y = val; - return NoFault; + break; case MISCREG_CCR: ccr = val; - return NoFault; + break; case MISCREG_ASI: asi = val; - return NoFault; + break; case MISCREG_FPRS: fprs = val; - return NoFault; + break; case MISCREG_TICK: - tick = val; - return NoFault; + tick = val; + break; case MISCREG_PCR: case MISCREG_PIC: panic("ASR number %d not implemented\n", miscReg - AsrStart); case MISCREG_GSR: gsr = val; + break; case MISCREG_SOFTINT: - softint = val; - return NoFault; + softint = val; + break; case MISCREG_TICK_CMPR: - tick_cmpr = val; - return NoFault; + tick_cmpr = val; + break; case MISCREG_STICK: - stick = val; - return NoFault; + stick = val; + break; case MISCREG_STICK_CMPR: - stick_cmpr = val; - return NoFault; + stick_cmpr = val; + break; /** Privilged Registers */ case MISCREG_TPC: tpc[tl-1] = val; - return NoFault; + break; case MISCREG_TNPC: tnpc[tl-1] = val; - return NoFault; + break; case MISCREG_TSTATE: tstate[tl-1] = val; - return NoFault; + break; case MISCREG_TT: tt[tl-1] = val; - return NoFault; + break; case MISCREG_PRIVTICK: panic("Priviliged access to tick regesiters not implemented\n"); case MISCREG_TBA: - tba = val; - return NoFault; + // clear lower 7 bits on writes. + tba = val & ULL(~0x7FFF); + break; case MISCREG_PSTATE: pstate = val; - return NoFault; + break; case MISCREG_TL: tl = val; - return NoFault; + break; case MISCREG_PIL: pil = val; - return NoFault; + break; case MISCREG_CWP: cwp = val; - return NoFault; + break; case MISCREG_CANSAVE: cansave = val; - return NoFault; + break; case MISCREG_CANRESTORE: canrestore = val; - return NoFault; + break; case MISCREG_CLEANWIN: cleanwin = val; - return NoFault; + break; case MISCREG_OTHERWIN: otherwin = val; - return NoFault; + break; case MISCREG_WSTATE: wstate = val; - return NoFault; + break; case MISCREG_GL: gl = val; - return NoFault; + break; /** Hyper privileged registers */ case MISCREG_HPSTATE: hpstate = val; - return NoFault; + break; case MISCREG_HTSTATE: htstate[tl-1] = val; - return NoFault; + break; case MISCREG_HINTP: panic("HINTP not implemented\n"); case MISCREG_HTBA: htba = val; - return NoFault; + break; case MISCREG_STRAND_STS_REG: strandStatusReg = val; - return NoFault; + break; case MISCREG_HSTICK_CMPR: hstick_cmpr = val; - return NoFault; + break; /** Floating Point Status Register */ case MISCREG_FSR: fsr = val; - return NoFault; + break; default: panic("Miscellaneous register %d not implemented\n", miscReg); } + return NoFault; } Fault MiscRegFile::setRegWithEffect(int miscReg, @@ -393,91 +394,25 @@ Fault MiscRegFile::setRegWithEffect(int miscReg, { const uint64_t Bit64 = (1ULL << 63); switch (miscReg) { - case MISCREG_Y: - case MISCREG_CCR: - case MISCREG_ASI: - setReg(miscReg, val); - return NoFault; - case MISCREG_PRIVTICK: case MISCREG_TICK: - if (isNonPriv()) - return new PrivilegedOpcode; - if (isPriv()) - return new PrivilegedAction; tickFields.counter = tc->getCpuPtr()->curCycle() - val & ~Bit64; tickFields.npt = val & Bit64 ? 1 : 0; - return NoFault; - case MISCREG_PC: - return new IllegalInstruction; + break; case MISCREG_FPRS: - return new UnimpFault("FPU not implemented\n"); + //Configure the fpu based on the fprs + break; case MISCREG_PCR: - return new UnimpFault("Performance Instrumentation not impl\n"); - case MISCREG_PIC: - return new UnimpFault("Performance Instrumentation not impl\n"); - case MISCREG_GSR: - return setReg(miscReg, val); - - /** Privilged Registers */ - case MISCREG_TPC: - case MISCREG_TNPC: - case MISCREG_TSTATE: - case MISCREG_TT: - if (tl == 0) - return new IllegalInstruction; - setReg(miscReg, val); - return NoFault; - - case MISCREG_TBA: - // clear lower 7 bits on writes. - setReg(miscReg, val & ULL(~0x7FFF)); - return NoFault; - - case MISCREG_PSTATE: - setReg(miscReg, val); - return NoFault; - - case MISCREG_TL: - if (isHyperPriv() && val > MaxTL) - setReg(miscReg, MaxTL); - else if (isPriv() && !isHyperPriv() && val > MaxPTL) - setReg(miscReg, MaxPTL); - else - setReg(miscReg, val); - return NoFault; - + //Set up performance counting based on pcr value + break; case MISCREG_CWP: tc->changeRegFileContext(CONTEXT_CWP, val); - case MISCREG_CANSAVE: - case MISCREG_CANRESTORE: - case MISCREG_CLEANWIN: - case MISCREG_OTHERWIN: - case MISCREG_WSTATE: - setReg(miscReg, val); - return NoFault; - + break; case MISCREG_GL: - int newval; - if (isHyperPriv() && val > MaxGL) - newval = MaxGL; - else if (isPriv() && !isHyperPriv() && val > MaxPGL) - newval = MaxPGL; - else - newval = val; - tc->changeRegFileContext(CONTEXT_GLOBALS, newval); - setReg(miscReg, newval); - return NoFault; - - /** Floating Point Status Register */ - case MISCREG_FSR: - setReg(miscReg, val); - default: -#if FULL_SYSTEM - setFSRegWithEffect(miscReg, val, tc); -#else - return new IllegalInstruction; -#endif + tc->changeRegFileContext(CONTEXT_GLOBALS, val); + break; } + setReg(miscReg, val); + return NoFault; } void MiscRegFile::serialize(std::ostream & os) diff --git a/src/arch/sparc/miscregfile.hh b/src/arch/sparc/miscregfile.hh index be143311f..0d81dae1e 100644 --- a/src/arch/sparc/miscregfile.hh +++ b/src/arch/sparc/miscregfile.hh @@ -56,7 +56,6 @@ namespace SparcISA MISCREG_CCR = AsrStart + 2, MISCREG_ASI = AsrStart + 3, MISCREG_TICK = AsrStart + 4, - MISCREG_PC = AsrStart + 5, MISCREG_FPRS = AsrStart + 6, MISCREG_PCR = AsrStart + 16, MISCREG_PIC = AsrStart + 17, |