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-rw-r--r--src/arch/sparc/isa/decoder.isa211
1 files changed, 194 insertions, 17 deletions
diff --git a/src/arch/sparc/isa/decoder.isa b/src/arch/sparc/isa/decoder.isa
index 70afe19b6..68b2183ad 100644
--- a/src/arch/sparc/isa/decoder.isa
+++ b/src/arch/sparc/isa/decoder.isa
@@ -185,25 +185,25 @@ decode OP default Unknown::unknown()
}}, ',a');
}
default: decode BPCC {
- 0x0: fbpcc0(22, {{
+ 0x0: fbpfcc0(19, {{
if(passesFpCondition(Fsr<11:10>, COND2))
NNPC = xc->readPC() + disp;
else
handle_annul
}});
- 0x1: fbpcc1(22, {{
+ 0x1: fbpfcc1(19, {{
if(passesFpCondition(Fsr<33:32>, COND2))
NNPC = xc->readPC() + disp;
else
handle_annul
}});
- 0x2: fbpcc2(22, {{
+ 0x2: fbpfcc2(19, {{
if(passesFpCondition(Fsr<35:34>, COND2))
NNPC = xc->readPC() + disp;
else
handle_annul
}});
- 0x3: fbpcc3(22, {{
+ 0x3: fbpfcc3(19, {{
if(passesFpCondition(Fsr<37:36>, COND2))
NNPC = xc->readPC() + disp;
else
@@ -426,19 +426,22 @@ decode OP default Unknown::unknown()
{{Rs1<63:> == val2<63:> && val2<63:> != resTemp<63:>}}
);
0x24: mulscc({{
- int64_t resTemp, multiplicand = Rs2_or_imm13;
- int32_t multiplier = Rs1<31:0>;
int32_t savedLSB = Rs1<0:>;
- multiplier = multiplier<31:1> |
- ((Ccr<3:3> ^ Ccr<1:1>) << 32);
- if(!Y<0:>)
- multiplicand = 0;
- Rd = resTemp = multiplicand + multiplier;
+
+ //Step 1
+ int64_t multiplicand = Rs2_or_imm13;
+ //Step 2
+ int32_t partialP = Rs1<31:1> |
+ ((Ccr<3:3> ^ Ccr<1:1>) << 31);
+ //Step 3
+ int32_t added = Y<0:> ? multiplicand : 0;
+ Rd = partialP + added;
+ //Steps 4 & 5
Y = Y<31:1> | (savedLSB << 31);}},
- {{((multiplicand<31:0> + multiplier<31:0>)<32:0>)}},
- {{multiplicand<31:> == multiplier<31:> && multiplier<31:> != resTemp<31:>}},
- {{((multiplicand >> 1) + (multiplier >> 1) + (multiplicand & multiplier & 0x1))<63:>}},
- {{multiplicand<63:> == multiplier<63:> && multiplier<63:> != resTemp<63:>}}
+ {{((partialP<31:0> + added<31:0>)<32:0>)}},
+ {{partialP<31:> == added<31:> && added<31:> != Rd<31:>}},
+ {{((partialP >> 1) + (added >> 1) + (partialP & added & 0x1))<63:>}},
+ {{partialP<63:> == added<63:> && partialP<63:> != Rd<63:>}}
);
}
format IntOp
@@ -816,6 +819,58 @@ decode OP default Unknown::unknown()
}
0x35: decode OPF{
format FpBasic{
+ 0x01: fmovs_fcc0({{
+ if(passesFpCondition(Fsr<11:10>, COND4))
+ Frds = Frs2s;
+ else
+ Frds = Frds;
+ }});
+ 0x02: fmovd_fcc0({{
+ if(passesFpCondition(Fsr<11:10>, COND4))
+ Frd = Frs2;
+ else
+ Frd = Frd;
+ }});
+ 0x03: FpUnimpl::fmovq_fcc0();
+ 0x25: fmovrsz({{
+ if(Rs1 == 0)
+ Frds = Frs2s;
+ else
+ Frds = Frds;
+ }});
+ 0x26: fmovrdz({{
+ if(Rs1 == 0)
+ Frd = Frs2;
+ else
+ Frd = Frd;
+ }});
+ 0x27: FpUnimpl::fmovrqz();
+ 0x41: fmovs_fcc1({{
+ if(passesFpCondition(Fsr<33:32>, COND4))
+ Frds = Frs2s;
+ else
+ Frds = Frds;
+ }});
+ 0x42: fmovd_fcc1({{
+ if(passesFpCondition(Fsr<33:32>, COND4))
+ Frd = Frs2;
+ else
+ Frd = Frd;
+ }});
+ 0x43: FpUnimpl::fmovq_fcc1();
+ 0x45: fmovrslez({{
+ if(Rs1 <= 0)
+ Frds = Frs2s;
+ else
+ Frds = Frds;
+ }});
+ 0x46: fmovrdlez({{
+ if(Rs1 <= 0)
+ Frd = Frs2;
+ else
+ Frd = Frd;
+ }});
+ 0x47: FpUnimpl::fmovrqlez();
0x51: fcmps({{
uint8_t fcc;
if(isnan(Frs1s) || isnan(Frs2s))
@@ -874,6 +929,110 @@ decode OP default Unknown::unknown()
Fsr = insertBits(Fsr, firstbit +1, firstbit, fcc);
}});
0x57: FpUnimpl::fcmpeq();
+ 0x65: fmovrslz({{
+ if(Rs1 < 0)
+ Frds = Frs2s;
+ else
+ Frds = Frds;
+ }});
+ 0x66: fmovrdlz({{
+ if(Rs1 < 0)
+ Frd = Frs2;
+ else
+ Frd = Frd;
+ }});
+ 0x67: FpUnimpl::fmovrqlz();
+ 0x81: fmovs_fcc2({{
+ if(passesFpCondition(Fsr<35:34>, COND4))
+ Frds = Frs2s;
+ else
+ Frds = Frds;
+ }});
+ 0x82: fmovd_fcc2({{
+ if(passesFpCondition(Fsr<35:34>, COND4))
+ Frd = Frs2;
+ else
+ Frd = Frd;
+ }});
+ 0x83: FpUnimpl::fmovq_fcc2();
+ 0xA5: fmovrsnz({{
+ if(Rs1 != 0)
+ Frds = Frs2s;
+ else
+ Frds = Frds;
+ }});
+ 0xA6: fmovrdnz({{
+ if(Rs1 != 0)
+ Frd = Frs2;
+ else
+ Frd = Frd;
+ }});
+ 0xA7: FpUnimpl::fmovrqnz();
+ 0xC1: fmovs_fcc3({{
+ if(passesFpCondition(Fsr<37:36>, COND4))
+ Frds = Frs2s;
+ else
+ Frds = Frds;
+ }});
+ 0xC2: fmovd_fcc3({{
+ if(passesFpCondition(Fsr<37:36>, COND4))
+ Frd = Frs2;
+ else
+ Frd = Frd;
+ }});
+ 0xC3: FpUnimpl::fmovq_fcc3();
+ 0xC5: fmovrsgz({{
+ if(Rs1 > 0)
+ Frds = Frs2s;
+ else
+ Frds = Frds;
+ }});
+ 0xC6: fmovrdgz({{
+ if(Rs1 > 0)
+ Frd = Frs2;
+ else
+ Frd = Frd;
+ }});
+ 0xC7: FpUnimpl::fmovrqgz();
+ 0xE5: fmovrsgez({{
+ if(Rs1 >= 0)
+ Frds = Frs2s;
+ else
+ Frds = Frds;
+ }});
+ 0xE6: fmovrdgez({{
+ if(Rs1 >= 0)
+ Frd = Frs2;
+ else
+ Frd = Frd;
+ }});
+ 0xE7: FpUnimpl::fmovrqgez();
+ 0x101: fmovs_icc({{
+ if(passesCondition(Ccr<3:0>, COND4))
+ Frds = Frs2s;
+ else
+ Frds = Frds;
+ }});
+ 0x102: fmovd_icc({{
+ if(passesCondition(Ccr<3:0>, COND4))
+ Frd = Frs2;
+ else
+ Frd = Frd;
+ }});
+ 0x103: FpUnimpl::fmovq_icc();
+ 0x181: fmovs_xcc({{
+ if(passesCondition(Ccr<7:4>, COND4))
+ Frds = Frs2s;
+ else
+ Frds = Frds;
+ }});
+ 0x182: fmovd_xcc({{
+ if(passesCondition(Ccr<7:4>, COND4))
+ Frd = Frs2;
+ else
+ Frd = Frd;
+ }});
+ 0x183: FpUnimpl::fmovq_xcc();
default: FailUnimpl::fpop2();
}
}
@@ -1164,7 +1323,16 @@ decode OP default Unknown::unknown()
0x04: stw({{Mem.uw = Rd.sw;}});
0x05: stb({{Mem.ub = Rd.sb;}});
0x06: sth({{Mem.uhw = Rd.shw;}});
- 0x07: sttw({{Mem.udw = RdLow<31:0> | (RdHigh<31:0> << 32);}});
+ 0x07: sttw({{
+ //This temporary needs to be here so that the parser
+ //will correctly identify this instruction as a store.
+ //It's probably either the parenthesis or referencing
+ //the member variable that throws confuses it.
+ Twin32_t temp;
+ temp.a = RdLow<31:0>;
+ temp.b = RdHigh<31:0>;
+ Mem.tuw = temp;
+ }});
}
format Load {
0x08: ldsw({{Rd = (int32_t)Mem.sw;}});
@@ -1254,7 +1422,16 @@ decode OP default Unknown::unknown()
0x14: stwa({{Mem.uw = Rd;}}, {{EXT_ASI}});
0x15: stba({{Mem.ub = Rd;}}, {{EXT_ASI}});
0x16: stha({{Mem.uhw = Rd;}}, {{EXT_ASI}});
- 0x17: sttwa({{Mem.udw = RdLow<31:0> | RdHigh<31:0> << 32;}}, {{EXT_ASI}});
+ 0x17: sttwa({{
+ //This temporary needs to be here so that the parser
+ //will correctly identify this instruction as a store.
+ //It's probably either the parenthesis or referencing
+ //the member variable that throws confuses it.
+ Twin32_t temp;
+ temp.a = RdLow<31:0>;
+ temp.b = RdHigh<31:0>;
+ Mem.tuw = temp;
+ }}, {{EXT_ASI}});
}
format LoadAlt {
0x18: ldswa({{Rd = (int32_t)Mem.sw;}}, {{EXT_ASI}});
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-20 00:11:59 +0000