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VFPv3: Implement VMOV (immediate)

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This commit is contained in:
MerryMage 2020-05-10 15:09:37 +01:00
parent 7f77a04900
commit 59db2c191a
4 changed files with 50 additions and 1 deletions
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18
src/frontend/A32/disassembler/disassembler_arm.cpp
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@ -1232,6 +1232,24 @@ public:
return fmt::format("vfma{}.{} {}, {}, {}", CondToString(cond), sz ? "f64" : "f32", FPRegStr(sz, Vd, D), FPRegStr(sz, Vn, N), FPRegStr(sz, Vm, M));
}
std::string vfp_VMOV_imm(Cond cond, bool D, Imm<4> imm4H, size_t Vd, bool sz, Imm<4> imm4L) {
const auto imm8 = concatenate(imm4H, imm4L);
if (sz) {
const u64 sign = static_cast<u64>(imm8.Bit<7>());
const u64 exp = (imm8.Bit<6>() ? 0x3FC : 0x400) | imm8.Bits<4, 5, u64>();
const u64 fract = imm8.Bits<0, 3, u64>() << 48;
const u64 immediate = (sign << 63) | (exp << 52) | fract;
return fmt::format("vmov{}.f64 {}, #0x{:016x}", CondToString(cond), FPRegStr(sz, Vd, D), immediate);
} else {
const u32 sign = static_cast<u32>(imm8.Bit<7>());
const u32 exp = (imm8.Bit<6>() ? 0x7C : 0x80) | imm8.Bits<4, 5>();
const u32 fract = imm8.Bits<0, 3>() << 19;
const u32 immediate = (sign << 31) | (exp << 23) | fract;
return fmt::format("vmov{}.f32 {}, #0x{:08x}", CondToString(cond), FPRegStr(sz, Vd, D), immediate);
}
}
std::string vfp_VMOV_u32_f64(Cond cond, size_t Vd, Reg t, bool D){
return fmt::format("vmov{}.32 {}, {}", CondToString(cond), FPRegStr(true, Vd, D), t);
}