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wtl3132: minor disasm tweaks (nw)

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This commit is contained in:
Patrick Mackinlay 2020-03-10 10:47:53 +07:00
parent 2ee7f7b9da
commit 0fb58176ac
1 changed files with 15 additions and 14 deletions
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29
src/devices/machine/wtl3132.cpp
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@ -454,37 +454,38 @@ std::string wtl3132_device::disassemble(u64 const code)
case MF_FSTSR: alu = std::string("fstsr"); break;
case MF_FMODE: alu = util::string_format("fmode 0x%04x", (OPF(code, ABIN) << 10) | (OPF(code, CADD) << 5) | OPF(code, AADD)); break;
case MF_FABS: alu = util::string_format("fabs %4s, %-12s", reg(OPF(code, AADD)), adst(code)); break;
case MF_FLOAT: alu = util::string_format("float %4s, %-12s", reg(OPF(code, AADD)), adst(code)); break;
case MF_FIX: alu = util::string_format("fix %4s, %-12s", reg(OPF(code, AADD)), adst(code)); break;
case MF_FLUT: alu = util::string_format("flut %4s, %-4s", reg(OPF(code, AADD)), reg(OPF(code, CADD))); break;
case MF_FABS: alu = util::string_format("fabs %4s, %s", reg(OPF(code, AADD)), adst(code)); break;
case MF_FLOAT: alu = util::string_format("float %4s, %s", reg(OPF(code, AADD)), adst(code)); break;
case MF_FIX: alu = util::string_format("fix %4s, %s", reg(OPF(code, AADD)), adst(code)); break;
case MF_FLUT: alu = util::string_format("flut %4s, %s", reg(OPF(code, AADD)), reg(OPF(code, CADD))); break;
}
break;
case F_FSUBR: alu = util::string_format("fsubr %4s, %4s, %-12s", reg(OPF(code, AADD)), abin(code), adst(code)); break;
case F_FSUBR: alu = util::string_format("fsubr %4s, %4s, %s", reg(OPF(code, AADD)), abin(code), adst(code)); break;
case F_FSUB:
if (!OPF(code, CWEN) || OPF(code, ADST) != 3 || OPF(code, ENCN))
alu = util::string_format("fsub %4s, %4s, %-12s", reg(OPF(code, AADD)), abin(code), adst(code));
alu = util::string_format("fsub %4s, %4s, %s", reg(OPF(code, AADD)), abin(code), adst(code));
else
alu = std::string("fnop");
break;
case F_FADD:
if (!OPF(code, CWEN) || OPF(code, ADST) != 3 || OPF(code, ENCN) || OPF(code, ABIN) != 7)
alu = util::string_format("fadd %4s, %4s, %-12s", reg(OPF(code, AADD)), abin(code), adst(code));
// FIXME: unsure if write enable is masked externally?
if (OPF(code, ADST) != 3 || OPF(code, ENCN) || OPF(code, ABIN) != 7) // !OPF(code, CWEN) ||
alu = util::string_format("fadd %4s, %4s, %s", reg(OPF(code, AADD)), abin(code), adst(code));
else
alu = std::string("fnop");
break;
case F_FMNA: alu = util::string_format("fmna %4s, %4s, %4s, %-12s", reg(OPF(code, AADD)), mbin(code), abin(code), adst(code)); break;
case F_FMNS: alu = util::string_format("fmns %4s, %4s, %4s, %-12s", reg(OPF(code, AADD)), mbin(code), abin(code), adst(code)); break;
case F_FMAC: alu = util::string_format("fmac %4s, %4s, %4s, %-12s", reg(OPF(code, AADD)), mbin(code), abin(code), adst(code)); break;
case F_FMNA: alu = util::string_format("fmna %4s, %4s, %4s, %s", reg(OPF(code, AADD)), mbin(code), abin(code), adst(code)); break;
case F_FMNS: alu = util::string_format("fmns %4s, %4s, %4s, %s", reg(OPF(code, AADD)), mbin(code), abin(code), adst(code)); break;
case F_FMAC: alu = util::string_format("fmac %4s, %4s, %4s, %s", reg(OPF(code, AADD)), mbin(code), abin(code), adst(code)); break;
}
switch (OPF(code, IOCT))
{
case 1: return util::string_format("%-38s ; floadrc %4s", alu, reg(OPF(code, DADD))); break;
case 2: return util::string_format("%-38s ; fstore %4s", alu, reg(OPF(code, DADD))); break;
case 3: return util::string_format("%-38s ; fload %4s", alu, reg(OPF(code, DADD))); break;
case 1: return util::string_format("%s; floadrc %4s", alu, reg(OPF(code, DADD))); break;
case 2: return util::string_format("%s; fstore %4s", alu, reg(OPF(code, DADD))); break;
case 3: return util::string_format("%s; fload %4s", alu, reg(OPF(code, DADD))); break;
default:
return alu;
}