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-rw-r--r--src/arch/sparc/isa/decoder.isa197
1 files changed, 174 insertions, 23 deletions
diff --git a/src/arch/sparc/isa/decoder.isa b/src/arch/sparc/isa/decoder.isa
index a5f43367d..4f3ea7810 100644
--- a/src/arch/sparc/isa/decoder.isa
+++ b/src/arch/sparc/isa/decoder.isa
@@ -346,22 +346,93 @@ decode OP default Unknown::unknown()
0x0: sra({{Rd = Rs1.sw >> (I ? SHCNT32 : Rs2<4:0>);}});
0x1: srax({{Rd = Rs1.sdw >> (I ? SHCNT64 : Rs2<5:0>);}});
}
- // XXX might want a format rdipr thing here
0x28: decode RS1 {
- 0xF: decode I {
+ 0x00: NoPriv::rdy({{Rd = Y;}});
+ //1 should cause an illegal instruction exception
+ 0x02: NoPriv::rdccr({{Rd = Ccr;}});
+ 0x03: NoPriv::rdasi({{Rd = Asi;}});
+ 0x04: PrivCheck::rdtick({{Rd = Tick;}}, {{Tick<63:>}});
+ 0x05: NoPriv::rdpc({{
+ if(Pstate<3:>)
+ Rd = (xc->readPC())<31:0>;
+ else
+ Rd = xc->readPC();}});
+ 0x06: NoPriv::rdfprs({{
+ //Wait for all fpops to finish.
+ Rd = Fprs;
+ }});
+ //7-14 should cause an illegal instruction exception
+ 0x0F: decode I {
0x0: Nop::stbar({{/*stuff*/}});
0x1: Nop::membar({{/*stuff*/}});
}
- default: rdasr({{
- Rd = xc->readMiscRegWithEffect(RS1 + AsrStart);
+ 0x10: Priv::rdpcr({{Rd = Pcr;}});
+ 0x11: PrivCheck::rdpic({{Rd = Pic;}}, {{Pcr<0:>}});
+ //0x12 should cause an illegal instruction exception
+ 0x13: NoPriv::rdgsr({{
+ if(Fprs<2:> == 0 || Pstate<4:> == 0)
+ Rd = Gsr;
+ else
+ fault = new FpDisabled;
}});
+ //0x14-0x15 should cause an illegal instruction exception
+ 0x16: Priv::rdsoftint({{Rd = Softint;}});
+ 0x17: Priv::rdtick_cmpr({{Rd = TickCmpr;}});
+ 0x18: PrivCheck::rdstick({{Rd = Stick}}, {{Stick<63:>}});
+ 0x19: Priv::rdstick_cmpr({{Rd = StickCmpr;}});
+ //0x1A-0x1F should cause an illegal instruction exception
+ }
+ 0x29: decode RS1 {
+ 0x00: HPriv::rdhprhpstate({{Rd = Hpstate;}});
+ 0x01: HPriv::rdhprhtstate({{
+ if(Tl == 0)
+ return new IllegalInstruction;
+ Rd = Htstate;
+ }});
+ //0x02 should cause an illegal instruction exception
+ 0x03: HPriv::rdhprhintp({{Rd = Hintp;}});
+ //0x04 should cause an illegal instruction exception
+ 0x05: HPriv::rdhprhtba({{Rd = Htba;}});
+ 0x06: HPriv::rdhprhver({{Rd = Hver;}});
+ //0x07-0x1E should cause an illegal instruction exception
+ 0x1F: HPriv::rdhprhstick_cmpr({{Rd = HstickCmpr;}});
+ }
+ 0x2A: decode RS1 {
+ 0x00: Priv::rdprtpc({{
+ if(Tl == 0)
+ return new IllegalInstruction;
+ Rd = Tpc;
+ }});
+ 0x01: Priv::rdprtnpc({{
+ if(Tl == 0)
+ return new IllegalInstruction;
+ Rd = Tnpc;
+ }});
+ 0x02: Priv::rdprtstate({{
+ if(Tl == 0)
+ return new IllegalInstruction;
+ Rd = Tstate;
+ }});
+ 0x03: Priv::rdprtt({{
+ if(Tl == 0)
+ return new IllegalInstruction;
+ Rd = Tt;
+ }});
+ 0x04: Priv::rdprtick({{Rd = Tick;}});
+ 0x05: Priv::rdprtba({{Rd = Tba;}});
+ 0x06: Priv::rdprpstate({{Rd = Pstate;}});
+ 0x07: Priv::rdprtl({{Rd = Tl;}});
+ 0x08: Priv::rdprpil({{Rd = Pil;}});
+ 0x09: Priv::rdprcwp({{Rd = Cwp;}});
+ 0x0A: Priv::rdprcansave({{Rd = Cansave;}});
+ 0x0B: Priv::rdprcanrestore({{Rd = Canrestore;}});
+ 0x0C: Priv::rdprcleanwin({{Rd = Cleanwin;}});
+ 0x0D: Priv::rdprotherwin({{Rd = Otherwin;}});
+ 0x0E: Priv::rdprwstate({{Rd = Wstate;}});
+ //0x0F should cause an illegal instruction exception
+ 0x10: Priv::rdprgl({{Rd = Gl;}});
+ //0x11-0x1F should cause an illegal instruction exception
}
- 0x29: HPriv::rdhpr({{
- Rd = xc->readMiscRegWithEffect(RS1 + HprStart);
- }});
- 0x2A: Priv::rdpr({{
- Rd = xc->readMiscRegWithEffect(RS1 + PrStart);
- }});
0x2B: BasicOperate::flushw({{
if(NWindows - 2 - Cansave == 0)
{
@@ -417,9 +488,35 @@ decode OP default Unknown::unknown()
0x6: movrg({{Rd = (Rs1.sdw > 0) ? Rs2_or_imm10 : Rd;}});
0x7: movrge({{Rd = (Rs1.sdw >= 0) ? Rs2_or_imm10 : Rd;}});
}
- 0x30: wrasr({{
- xc->setMiscRegWithEffect(RD + AsrStart, Rs1 ^ Rs2_or_imm13);
- }});
+ 0x30: decode RD {
+ 0x00: NoPriv::wry({{Y = Rs1 ^ Rs2_or_imm13;}});
+ //0x01 should cause an illegal instruction exception
+ 0x02: NoPriv::wrccr({{Ccr = Rs1 ^ Rs2_or_imm13;}});
+ 0x03: NoPriv::wrasi({{Ccr = Rs1 ^ Rs2_or_imm13;}});
+ //0x04-0x05 should cause an illegal instruction exception
+ 0x06: NoPriv::wrfprs({{Fprs = Rs1 ^ Rs2_or_imm13;}});
+ //0x07-0x0E should cause an illegal instruction exception
+ 0x0F: Trap::softreset({{fault = new SoftwareInitiatedReset;}});
+ 0x10: Priv::wrpcr({{Pcr = Rs1 ^ Rs2_or_imm13;}});
+ 0x11: PrivCheck::wrpic({{Pic = Rs1 ^ Rs2_or_imm13;}}, {{Pcr<0:>}});
+ //0x12 should cause an illegal instruction exception
+ 0x13: NoPriv::wrgsr({{
+ if(Fprs<2:> == 0 || Pstate<4:> == 0)
+ return new FpDisabled;
+ Gsr = Rs1 ^ Rs2_or_imm13;
+ }});
+ 0x14: Priv::wrsoftint_set({{SoftintSet = Rs1 ^ Rs2_or_imm13;}});
+ 0x15: Priv::wrsoftint_clr({{SoftintClr = Rs1 ^ Rs2_or_imm13;}});
+ 0x16: Priv::wrsoftint({{Softint = Rs1 ^ Rs2_or_imm13;}});
+ 0x17: Priv::wrtick_cmpr({{TickCmpr = Rs1 ^ Rs2_or_imm13;}});
+ 0x18: NoPriv::wrstick({{
+ if(!Hpstate<2:>)
+ return new IllegalInstruction;
+ Stick = Rs1 ^ Rs2_or_imm13;
+ }});
+ 0x19: Priv::wrstick_cmpr({{StickCmpr = Rs1 ^ Rs2_or_imm13;}});
+ //0x1A-0x1F should cause an illegal instruction exception
+ }
0x31: decode FCN {
0x0: Priv::saved({{
assert(Cansave < NWindows - 2);
@@ -440,16 +537,70 @@ decode OP default Unknown::unknown()
Otherwin = Otherwin - 1;
}});
}
- 0x32: Priv::wrpr({{
- // XXX Need to protect with format that traps non-priv
- // access
- xc->setMiscRegWithEffect(RD + PrStart, Rs1 ^ Rs2_or_imm13);
- }});
- 0x33: HPriv::wrhpr({{
- // XXX Need to protect with format that traps non-priv/priv
- // access
- xc->setMiscRegWithEffect(RD + HprStart, Rs1 ^ Rs2_or_imm13);
- }});
+ 0x32: decode RD {
+ 0x00: Priv::wrprtpc({{
+ if(Tl == 0)
+ return new IllegalInstruction;
+ else
+ Tpc = Rs1 ^ Rs2_or_imm13;
+ }});
+ 0x01: Priv::wrprtnpc({{
+ if(Tl == 0)
+ return new IllegalInstruction;
+ else
+ Tnpc = Rs1 ^ Rs2_or_imm13;
+ }});
+ 0x02: Priv::wrprtstate({{
+ if(Tl == 0)
+ return new IllegalInstruction;
+ else
+ Tstate = Rs1 ^ Rs2_or_imm13;
+ }});
+ 0x03: Priv::wrprtt({{
+ if(Tl == 0)
+ return new IllegalInstruction;
+ else
+ Tt = Rs1 ^ Rs2_or_imm13;
+ }});
+ 0x04: HPriv::wrprtick({{Tick = Rs1 ^ Rs2_or_imm13;}});
+ 0x05: Priv::wrprtba({{Tba = Rs1 ^ Rs2_or_imm13;}});
+ 0x06: Priv::wrprpstate({{Pstate = Rs1 ^ Rs2_or_imm13;}});
+ 0x07: Priv::wrprtl({{
+ if(Pstate<2:> && !Hpstate<2:>)
+ Tl = std::min<uint64_t>(Rs1 ^ Rs2_or_imm13, MaxPTL);
+ else
+ Tl = std::min<uint64_t>(Rs1 ^ Rs2_or_imm13, MaxTL);
+ }});
+ 0x08: Priv::wrprpil({{Pil = Rs1 ^ Rs2_or_imm13;}});
+ 0x09: Priv::wrprcwp({{Cwp = Rs1 ^ Rs2_or_imm13;}});
+ 0x0A: Priv::wrprcansave({{Cansave = Rs1 ^ Rs2_or_imm13;}});
+ 0x0B: Priv::wrprcanrestore({{Canrestore = Rs1 ^ Rs2_or_imm13;}});
+ 0x0C: Priv::wrprcleanwin({{Cleanwin = Rs1 ^ Rs2_or_imm13;}});
+ 0x0D: Priv::wrprotherwin({{Otherwin = Rs1 ^ Rs2_or_imm13;}});
+ 0x0E: Priv::wrprwstate({{Wstate = Rs1 ^ Rs2_or_imm13;}});
+ //0x0F should cause an illegal instruction exception
+ 0x10: Priv::wrprgl({{
+ if(Pstate<2:> && !Hpstate<2:>)
+ Gl = std::min<uint64_t>(Rs1 ^ Rs2_or_imm13, MaxPGL);
+ else
+ Gl = std::min<uint64_t>(Rs1 ^ Rs2_or_imm13, MaxGL);
+ }});
+ //0x11-0x1F should cause an illegal instruction exception
+ }
+ 0x33: decode RD {
+ 0x00: HPriv::wrhprhpstate({{Hpstate = Rs1 ^ Rs2_or_imm13;}});
+ 0x01: HPriv::wrhprhtstate({{
+ if(Tl == 0)
+ return new IllegalInstruction;
+ Htstate = Rs1 ^ Rs2_or_imm13;
+ }});
+ //0x02 should cause an illegal instruction exception
+ 0x03: HPriv::wrhprhintp({{Hintp = Rs1 ^ Rs2_or_imm13;}});
+ //0x04 should cause an illegal instruction exception
+ 0x05: HPriv::wrhprhtba({{Htba = Rs1 ^ Rs2_or_imm13;}});
+ //0x06-0x01D should cause an illegal instruction exception
+ 0x1F: HPriv::wrhprhstick_cmpr({{HstickCmpr = Rs1 ^ Rs2_or_imm13;}});
+ }
0x34: decode OPF{
format BasicOperate{
0x01: fmovs({{
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-15 17:38:34 +0000