diff options
Diffstat (limited to 'src/arch/sparc/isa/decoder.isa')
| -rw-r--r-- | src/arch/sparc/isa/decoder.isa | 75 |
1 files changed, 43 insertions, 32 deletions
diff --git a/src/arch/sparc/isa/decoder.isa b/src/arch/sparc/isa/decoder.isa index 45d3616d9..dc7597e5e 100644 --- a/src/arch/sparc/isa/decoder.isa +++ b/src/arch/sparc/isa/decoder.isa @@ -357,13 +357,9 @@ decode OP default Unknown::unknown() }}); } 0x29: HPriv::rdhpr({{ - // XXX Need to protect with format that traps non-priv/priv - // access Rd = xc->readMiscRegWithEffect(RS1 + HprStart, fault); }}); 0x2A: Priv::rdpr({{ - // XXX Need to protect with format that traps non-priv - // access Rd = xc->readMiscRegWithEffect(RS1 + PrStart, fault); }}); 0x2B: BasicOperate::flushw({{ @@ -425,18 +421,34 @@ decode OP default Unknown::unknown() xc->setMiscRegWithEffect(RD + AsrStart, Rs1 ^ Rs2_or_imm13); }}); 0x31: decode FCN { - 0x0: BasicOperate::saved({{/*Boogy Boogy*/}}); - 0x1: BasicOperate::restored({{/*Boogy Boogy*/}}); + 0x0: Priv::saved({{ + assert(Cansave < NWindows - 2); + assert(Otherwin || Canrestore); + Cansave = Cansave + 1; + if(Otherwin == 0) + Canrestore = Canrestore - 1; + else + Otherwin = Otherwin - 1; + }}); + 0x1: BasicOperate::restored({{ + assert(Cansave || Otherwin); + assert(Canrestore < NWindows - 2); + Canrestore = Canrestore + 1; + if(Otherwin == 0) + Cansave = Cansave - 1; + else + Otherwin = Otherwin - 1; + }}); } 0x32: Priv::wrpr({{ // XXX Need to protect with format that traps non-priv // access - fault = xc->setMiscRegWithEffect(RD + PrStart, Rs1 ^ Rs2_or_imm13); + xc->setMiscRegWithEffect(RD + PrStart, Rs1 ^ Rs2_or_imm13); }}); 0x33: HPriv::wrhpr({{ // XXX Need to protect with format that traps non-priv/priv // access - fault = xc->setMiscRegWithEffect(RD + HprStart, Rs1 ^ Rs2_or_imm13); + xc->setMiscRegWithEffect(RD + HprStart, Rs1 ^ Rs2_or_imm13); }}); 0x34: decode OPF{ format BasicOperate{ @@ -684,10 +696,6 @@ decode OP default Unknown::unknown() NNPC = target; if(fault == NoFault) { - //CWP should be set directly so that it always happens - //Also, this will allow writing to the new window and - //reading from the old one - Cwp = (Cwp - 1 + NWindows) % NWindows; if(Canrestore == 0) { if(Otherwin) @@ -697,14 +705,17 @@ decode OP default Unknown::unknown() } else { - Rd = Rs1 + Rs2_or_imm13; + //CWP should be set directly so that it always happens + //Also, this will allow writing to the new window and + //reading from the old one + Cwp = (Cwp - 1 + NWindows) % NWindows; Cansave = Cansave + 1; Canrestore = Canrestore - 1; + //This is here to make sure the CWP is written + //no matter what. This ensures that the results + //are written in the new window as well. + xc->setMiscRegWithEffect(MISCREG_CWP, Cwp); } - //This is here to make sure the CWP is written - //no matter what. This ensures that the results - //are written in the new window as well. - xc->setMiscRegWithEffect(MISCREG_CWP, Cwp); } }}); 0x3A: decode CC @@ -747,11 +758,11 @@ decode OP default Unknown::unknown() fault = new SpillNOther(Wstate<5:3>); else fault = new SpillNNormal(Wstate<2:0>); - Cwp = (Cwp + 2) % NWindows; + //Cwp = (Cwp + 2) % NWindows; } else if(Cleanwin - Canrestore == 0) { - Cwp = (Cwp + 1) % NWindows; + //Cwp = (Cwp + 1) % NWindows; fault = new CleanWindow; } else @@ -760,17 +771,13 @@ decode OP default Unknown::unknown() Rd = Rs1 + Rs2_or_imm13; Cansave = Cansave - 1; Canrestore = Canrestore + 1; + //This is here to make sure the CWP is written + //no matter what. This ensures that the results + //are written in the new window as well. + xc->setMiscRegWithEffect(MISCREG_CWP, Cwp); } - //This is here to make sure the CWP is written - //no matter what. This ensures that the results - //are written in the new window as well. - xc->setMiscRegWithEffect(MISCREG_CWP, Cwp); }}); 0x3D: restore({{ - //CWP should be set directly so that it always happens - //Also, this will allow writing to the new window and - //reading from the old one - Cwp = (Cwp - 1 + NWindows) % NWindows; if(Canrestore == 0) { if(Otherwin) @@ -780,14 +787,18 @@ decode OP default Unknown::unknown() } else { + //CWP should be set directly so that it always happens + //Also, this will allow writing to the new window and + //reading from the old one + Cwp = (Cwp - 1 + NWindows) % NWindows; Rd = Rs1 + Rs2_or_imm13; Cansave = Cansave + 1; Canrestore = Canrestore - 1; + //This is here to make sure the CWP is written + //no matter what. This ensures that the results + //are written in the new window as well. + xc->setMiscRegWithEffect(MISCREG_CWP, Cwp); } - //This is here to make sure the CWP is written - //no matter what. This ensures that the results - //are written in the new window as well. - xc->setMiscRegWithEffect(MISCREG_CWP, Cwp); }}); 0x3E: decode FCN { 0x0: Priv::done({{ @@ -812,7 +823,7 @@ decode OP default Unknown::unknown() Ccr = Tstate<39:32>; Gl = Tstate<42:40>; NPC = Tpc; - NNPC = Tnpc + 4; + NNPC = Tnpc; Tl = Tl - 1; }}); } |