aboutsummaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/armv8/a64.rs302
1 files changed, 285 insertions, 17 deletions
diff --git a/src/armv8/a64.rs b/src/armv8/a64.rs
index 4dc5483..e6ed329 100644
--- a/src/armv8/a64.rs
+++ b/src/armv8/a64.rs
@@ -650,6 +650,16 @@ impl Display for Instruction {
write!(fmt, "dup")?;
}
}
+ Opcode::UMOV => {
+ if let (Operand::Register(reg_sz, _), Operand::SIMDRegisterElementsLane(_, _, elem_sz, _)) = (self.operands[0], self.operands[1]) {
+ if (reg_sz == SizeCode::W && elem_sz == SIMDSizeCode::S) ||
+ (reg_sz == SizeCode::X && elem_sz == SIMDSizeCode::D) {
+ return write!(fmt, "mov {}, {}", self.operands[0], self.operands[1]);
+ } else {
+ write!(fmt, "umov")?;
+ }
+ }
+ }
other => { write!(fmt, "{}", other)?; }
};
@@ -1228,6 +1238,8 @@ pub enum Opcode {
TBL,
TBX,
+
+ FCADD,
}
impl Display for Opcode {
@@ -1988,6 +2000,7 @@ impl Display for Opcode {
Opcode::STLLR => "stllr",
Opcode::TBL => "tbl",
Opcode::TBX => "tbx",
+ Opcode::FCADD => "fcadd",
Opcode::Bcc(cond) => {
return write!(fmt, "b.{}", Operand::ConditionCode(cond));
@@ -2325,7 +2338,7 @@ impl Display for Operand {
write!(fmt, "#{:x}", i)
},
Operand::ImmediateDouble(d) => {
- write!(fmt, "{:}", d)
+ write!(fmt, "#{:0.1}", d)
},
Operand::Imm16(i) => {
write!(fmt, "#{:x}", *i)
@@ -3628,6 +3641,59 @@ impl Decoder<ARMv8> for InstDecoder {
Operand::SIMDRegisterElements(datasize, Rm as u16, T),
Operand::Nothing,
];
+ } else if op2 == 0b1111 && op3 & 0b110000011 == 0b000000010 {
+ // `Advanced SIMD two-register miscellaneous (FP16)`
+ let Rd = (word >> 0) & 0b11111;
+ let Rn = (word >> 5) & 0b11111;
+ let opc = (word >> 12) & 0b11111;
+ let a = (word >> 23) & 1;
+ let u = (word >> 29) & 1;
+ let q = (word >> 30) & 1;
+
+ let vec_size = if q == 0 {
+ SIMDSizeCode::D
+ } else {
+ SIMDSizeCode::Q
+ };
+
+ inst.opcode = match (u, a, opc) {
+ (0, 0, 0b11000) => Opcode::FRINTN,
+ (0, 0, 0b11001) => Opcode::FRINTM,
+ (0, 0, 0b11010) => Opcode::FCVTNS,
+ (0, 0, 0b11011) => Opcode::FCVTMS,
+ (0, 0, 0b11100) => Opcode::FCVTAS,
+ (0, 0, 0b11101) => Opcode::SCVTF,
+ (0, 1, 0b01100) => Opcode::FCMGT,
+ (0, 1, 0b01101) => Opcode::FCMEQ,
+ (0, 1, 0b01110) => Opcode::FCMLT,
+ (0, 1, 0b01111) => Opcode::FABS,
+ (0, 1, 0b11000) => Opcode::FRINTP,
+ (0, 1, 0b11001) => Opcode::FRINTZ,
+ (0, 1, 0b11010) => Opcode::FCVTPS,
+ (0, 1, 0b11011) => Opcode::FCVTZS,
+ (0, 1, 0b11101) => Opcode::FRECPE,
+ (1, 0, 0b11000) => Opcode::FRINTA,
+ (1, 0, 0b11001) => Opcode::FRINTX,
+ (1, 0, 0b11010) => Opcode::FCVTNU,
+ (1, 0, 0b11011) => Opcode::FCVTMU,
+ (1, 0, 0b11100) => Opcode::FCVTAU,
+ (1, 0, 0b11101) => Opcode::UCVTF,
+ (1, 1, 0b01100) => Opcode::FCMGE,
+ (1, 1, 0b01101) => Opcode::FCMLE,
+ (1, 1, 0b01111) => Opcode::FNEG,
+ (1, 1, 0b11001) => Opcode::FRINTI,
+ (1, 1, 0b11010) => Opcode::FCVTPU,
+ (1, 1, 0b11011) => Opcode::FCVTZU,
+ (1, 1, 0b11101) => Opcode::FRSQRTE,
+ (1, 1, 0b11111) => Opcode::FSQRT,
+ _ => { return Err(DecodeError::InvalidOpcode); }
+ };
+ inst.operands = [
+ Operand::SIMDRegisterElements(vec_size, Rd as u16, SIMDSizeCode::H),
+ Operand::SIMDRegisterElements(vec_size, Rn as u16, SIMDSizeCode::H),
+ Operand::Nothing,
+ Operand::Nothing,
+ ];
} else if op3 & 0b11 == 0b00 {
// `Advanced SIMD three different`
let opcode = (word >> 12) & 0b1111;
@@ -3679,12 +3745,28 @@ impl Decoder<ARMv8> for InstDecoder {
][size as usize]?;
inst.opcode = OPCODES[((U << 5) | (opcode << 1) | Q) as usize]?;
- inst.operands = [
- Operand::SIMDRegisterElements(SIMDSizeCode::Q, Rd as u16, Ta),
- Operand::SIMDRegisterElements(datasize, Rn as u16, Tb),
- Operand::SIMDRegisterElements(datasize, Rm as u16, Tb),
- Operand::Nothing,
- ];
+ if opcode == 0b001 || opcode == 0b011 {
+ inst.operands = [
+ Operand::SIMDRegisterElements(SIMDSizeCode::Q, Rd as u16, Ta),
+ Operand::SIMDRegisterElements(SIMDSizeCode::Q, Rn as u16, Ta),
+ Operand::SIMDRegisterElements(datasize, Rm as u16, Tb),
+ Operand::Nothing,
+ ];
+ } else if opcode == 0b100 || opcode == 0b110 {
+ inst.operands = [
+ Operand::SIMDRegisterElements(datasize, Rd as u16, Tb),
+ Operand::SIMDRegisterElements(SIMDSizeCode::Q, Rn as u16, Ta),
+ Operand::SIMDRegisterElements(SIMDSizeCode::Q, Rm as u16, Ta),
+ Operand::Nothing,
+ ];
+ } else {
+ inst.operands = [
+ Operand::SIMDRegisterElements(SIMDSizeCode::Q, Rd as u16, Ta),
+ Operand::SIMDRegisterElements(datasize, Rn as u16, Tb),
+ Operand::SIMDRegisterElements(datasize, Rm as u16, Tb),
+ Operand::Nothing,
+ ];
+ }
} else if op3 & 0b11_00000_11 == 0b00_00000_10 {
// op3 == 00xxxx10:
// could be either `Advanced SIMD across lanes` or `Advanced SIMD
@@ -3727,9 +3809,9 @@ impl Decoder<ARMv8> for InstDecoder {
];
const TABLE_E: &'static OperandSizeTable = &[
- Ok((D, B, D, H)), Ok((Q, H, Q, H)),
- Ok((D, H, D, S)), Ok((Q, S, Q, S)),
- Ok((D, S, D, D)), Ok((Q, D, Q, D)),
+ Ok((D, B, Q, H)), Ok((Q, H, Q, H)),
+ Ok((D, H, Q, S)), Ok((Q, S, Q, S)),
+ Ok((D, S, Q, D)), Ok((Q, D, Q, D)),
Err(DecodeError::InvalidOperand), Err(DecodeError::InvalidOperand),
];
@@ -3760,8 +3842,8 @@ impl Decoder<ARMv8> for InstDecoder {
const TABLE_I: &'static OperandSizeTable = &[
Ok((D, S, D, S)), Ok((Q, S, Q, S)),
Err(DecodeError::InvalidOperand), Ok((Q, D, Q, D)),
- Err(DecodeError::InvalidOperand), Err(DecodeError::InvalidOperand),
- Err(DecodeError::InvalidOperand), Err(DecodeError::InvalidOperand),
+ Ok((D, S, D, S)), Ok((Q, S, Q, S)),
+ Err(DecodeError::InvalidOperand), Ok((Q, D, Q, D)),
];
if op2 & 0b0111 == 0b0100 {
@@ -3882,14 +3964,14 @@ impl Decoder<ARMv8> for InstDecoder {
} else {
OPCODES_U1_LOW[opcode as usize]?
};
- (opc, table[(((size & 1) << 1) | q) as usize]?)
+ (opc, table[((size << 1) | q) as usize]?)
} else {
let (opc, table) = if U == 0 {
OPCODES_U0_HIGH[(((opcode - 0b10100) << 1) | (size >> 1)) as usize]?
} else {
OPCODES_U1_HIGH[(((opcode - 0b10100) << 1) | (size >> 1)) as usize]?
};
- (opc, table[(((size & 1) << 1) | q) as usize]?)
+ (opc, table[((size << 1) | q) as usize]?)
};
if opc == Opcode::FCVTL && q != 0 {
@@ -3903,6 +3985,11 @@ impl Decoder<ARMv8> for InstDecoder {
Operand::Nothing,
Operand::Nothing,
];
+ if [Opcode::CMGE, Opcode::CMLE, Opcode::CMGT, Opcode::CMEQ, Opcode::CMLT].contains(&inst.opcode) {
+ inst.operands[2] = Operand::Imm64(0);
+ } else if [Opcode::FCMGE, Opcode::FCMLE, Opcode::FCMGT, Opcode::FCMEQ, Opcode::FCMLT].contains(&inst.opcode) {
+ inst.operands[2] = Operand::ImmediateDouble(0.0);
+ }
} else if op2 & 0b0111 == 0b0110 {
// `Advanced SIMD across lanes`
@@ -3911,6 +3998,9 @@ impl Decoder<ARMv8> for InstDecoder {
let u = (word >> 29) & 1 == 1;
let q = (word >> 30) & 1 == 1;
+ let opc_bits = opcode;
+ let size_bits = size;
+
let (size, opcode) = if opcode == 0b01100 {
let opcode = if size == 0b00 {
Opcode::FMAXNMV
@@ -3997,10 +4087,28 @@ impl Decoder<ARMv8> for InstDecoder {
(size, opcode)
};
+ let scalar_size = if opc_bits == 0b00011 {
+ if size_bits == 0b00 {
+ SIMDSizeCode::H
+ } else if size_bits == 0b01 {
+ SIMDSizeCode::S
+ } else {
+ SIMDSizeCode::D
+ }
+ } else {
+ size
+ };
+
+ let vec_size = if !q {
+ SIMDSizeCode::D
+ } else {
+ SIMDSizeCode::Q
+ };
+
inst.opcode = opcode;
inst.operands = [
- Operand::SIMDRegister(size, Rd as u16),
- Operand::SIMDRegisterElements(SIMDSizeCode::Q, Rn as u16, size),
+ Operand::SIMDRegister(scalar_size, Rd as u16),
+ Operand::SIMDRegisterElements(vec_size, Rn as u16, size),
Operand::Nothing,
Operand::Nothing,
];
@@ -4011,7 +4119,164 @@ impl Decoder<ARMv8> for InstDecoder {
}
} else {
// op2 == x0xx
- if op3 & 0b000100001 == 0b000000001 {
+ if op3 & 0b000100001 == 0b000100001 {
+ // `Advanced SIMD three same extra``
+ let Rd = (word >> 0) & 0b11111;
+ let Rn = (word >> 5) & 0b11111;
+ let opcode = (word >> 11) & 0b1111;
+ let Rm = (word >> 16) & 0b11111;
+ let sz = (word >> 22) & 0b11;
+ let u = (word >> 29) & 1;
+ let q = (word >> 30) & 1;
+
+ if opcode == 0b0010 {
+ // sdot/udot
+ inst.opcode = if u == 0 {
+ Opcode::SDOT
+ } else {
+ Opcode::UDOT
+ };
+ let vec_size = if q == 0 {
+ SIMDSizeCode::D
+ } else {
+ SIMDSizeCode::Q
+ };
+ inst.operands = [
+ Operand::SIMDRegisterElements(vec_size, Rd as u16, SIMDSizeCode::S),
+ Operand::SIMDRegisterElements(vec_size, Rn as u16, SIMDSizeCode::B),
+ Operand::SIMDRegisterElements(vec_size, Rm as u16, SIMDSizeCode::B),
+ Operand::Nothing,
+ ];
+ } else {
+ if u == 0 {
+ return Err(DecodeError::InvalidOpcode);
+ }
+ if opcode & 0b1110 == 0b0000 {
+ // sqrdml{a,s}h
+ inst.opcode = if opcode == 0b0000 {
+ Opcode::SQRDMLAH
+ } else {
+ Opcode::SQRDMLSH
+ };
+ let vec_size = if q == 0 {
+ SIMDSizeCode::D
+ } else {
+ SIMDSizeCode::Q
+ };
+ let elem_size = if sz == 0b01 {
+ SIMDSizeCode::H
+ } else if sz == 0b10 {
+ SIMDSizeCode::S
+ } else {
+ return Err(DecodeError::InvalidOperand);
+ };
+ inst.operands = [
+ Operand::SIMDRegisterElements(vec_size, Rd as u16, elem_size),
+ Operand::SIMDRegisterElements(vec_size, Rn as u16, elem_size),
+ Operand::SIMDRegisterElements(vec_size, Rm as u16, elem_size),
+ Operand::Nothing,
+ ];
+ } else if opcode & 0b1100 == 0b1000 {
+ // fcmla
+ let rot = (word >> 11) & 0b11;
+
+ let vec_size = if q == 0 {
+ SIMDSizeCode::D
+ } else {
+ SIMDSizeCode::Q
+ };
+ let elem_size = if sz == 0b01 {
+ SIMDSizeCode::H
+ } else if sz == 0b10 {
+ SIMDSizeCode::S
+ } else {
+ if q == 0 {
+ return Err(DecodeError::InvalidOperand);
+ }
+ SIMDSizeCode::D
+ };
+ inst.opcode = Opcode::FCMLA;
+ inst.operands = [
+ Operand::SIMDRegisterElements(vec_size, Rd as u16, elem_size),
+ Operand::SIMDRegisterElements(vec_size, Rn as u16, elem_size),
+ Operand::SIMDRegisterElements(vec_size, Rm as u16, elem_size),
+ Operand::Imm16(rot as u16),
+ ];
+ } else if opcode & 0b1101 == 0b1100 {
+ // fcadd
+ let rot = (word >> 12) & 1;
+
+ let vec_size = if q == 0 {
+ SIMDSizeCode::D
+ } else {
+ SIMDSizeCode::Q
+ };
+ let elem_size = if sz == 0b01 {
+ SIMDSizeCode::H
+ } else if sz == 0b10 {
+ SIMDSizeCode::S
+ } else {
+ if q == 0 {
+ return Err(DecodeError::InvalidOperand);
+ }
+ SIMDSizeCode::D
+ };
+ inst.opcode = Opcode::FCADD;
+ inst.operands = [
+ Operand::SIMDRegisterElements(vec_size, Rd as u16, elem_size),
+ Operand::SIMDRegisterElements(vec_size, Rn as u16, elem_size),
+ Operand::SIMDRegisterElements(vec_size, Rm as u16, elem_size),
+ Operand::Imm16(rot as u16),
+ ];
+ } else {
+ return Err(DecodeError::InvalidOpcode);
+ }
+ }
+ } else if op2 & 0b1100 == 0b1000 && op3 & 0b000110001 == 0b000000001 {
+ // `Advanced SIMD three same (FP16)`
+ let Rd = (word >> 0) & 0b11111;
+ let Rn = (word >> 5) & 0b11111;
+ let opc = (word >> 11) & 0b111;
+ let Rm = (word >> 16) & 0b11111;
+ let a = (word >> 23) & 1;
+ let u = (word >> 29) & 1;
+ let q = (word >> 30) & 1;
+
+ const OPCODES: &[Result<Opcode, DecodeError>; 32] = &[
+ Ok(Opcode::FMAXNM), Ok(Opcode::FMLA),
+ Ok(Opcode::FADD), Ok(Opcode::FMULX),
+ Ok(Opcode::FCMEQ), Err(DecodeError::InvalidOpcode),
+ Ok(Opcode::FMAX), Ok(Opcode::FRECPS),
+ Ok(Opcode::FMINNM), Ok(Opcode::FMLS),
+ Ok(Opcode::FSUB), Err(DecodeError::InvalidOpcode),
+ Err(DecodeError::InvalidOpcode), Err(DecodeError::InvalidOpcode),
+ Ok(Opcode::FMIN), Ok(Opcode::FRSQRTS),
+ Ok(Opcode::FMAXNMP), Err(DecodeError::InvalidOpcode),
+ Ok(Opcode::FADDP), Ok(Opcode::FMUL),
+ Ok(Opcode::FCMGE), Ok(Opcode::FACGE),
+ Ok(Opcode::FMAXP), Ok(Opcode::FDIV),
+ Ok(Opcode::FMINNMP), Err(DecodeError::InvalidOpcode),
+ Ok(Opcode::FABD), Err(DecodeError::InvalidOpcode),
+ Ok(Opcode::FCMGT), Ok(Opcode::FACGT),
+ Ok(Opcode::FMINP), Err(DecodeError::InvalidOpcode),
+ ];
+
+ let vec_size = if q == 0 {
+ SIMDSizeCode::D
+ } else {
+ SIMDSizeCode::Q
+ };
+
+ let uaopc = (u << 4) | (a << 3) | opc;
+
+ inst.opcode = OPCODES[uaopc as usize]?;
+ inst.operands = [
+ Operand::SIMDRegisterElements(vec_size, Rd as u16, SIMDSizeCode::H),
+ Operand::SIMDRegisterElements(vec_size, Rn as u16, SIMDSizeCode::H),
+ Operand::SIMDRegisterElements(vec_size, Rm as u16, SIMDSizeCode::H),
+ Operand::Nothing,
+ ];
+ } else if op3 & 0b000100001 == 0b000000001 {
// `Advanced SIMD copy`
let Rd = (word >> 0) & 0b11111;
let Rn = (word >> 5) & 0b11111;
@@ -5313,6 +5578,9 @@ impl Decoder<ARMv8> for InstDecoder {
Operand::Nothing,
Operand::Nothing,
];
+ if [Opcode::FCMGE, Opcode::FCMLE, Opcode::FCMGT, Opcode::FCMEQ, Opcode::FCMLT].contains(&inst.opcode) {
+ inst.operands[2] = Operand::ImmediateDouble(0.0);
+ }
} else if op2 & 0b0111 == 0b110 {
// `Advanced SIMD scalar pairwise`
let Rd = word & 0b11111;
generated by cgit v1.1 at 2025-10-31 15:45:25 +0000