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Diffstat (limited to 'src/long_mode')
-rw-r--r--src/long_mode/mod.rs41
1 files changed, 10 insertions, 31 deletions
diff --git a/src/long_mode/mod.rs b/src/long_mode/mod.rs
index 8148ef9..6b0d51c 100644
--- a/src/long_mode/mod.rs
+++ b/src/long_mode/mod.rs
@@ -5730,17 +5730,15 @@ fn read_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter: T,
read_modrm_reg(instruction, modrm, bank)?
} else {
read_M(&mut bytes_iter, instruction, modrm, length)?
- }
+ };
+ instruction.operands[1] = mem_oper;
}
if operand_code.is_only_modrm_operands() {
- let (mmm, rrr) = if operand_code.has_reg_mem() {
- (1, 0)
- } else {
- (0, 1)
+ if !operand_code.has_reg_mem() {
+ instruction.operands[0] = mem_oper;
+ instruction.operands[1] = OperandSpec::RegRRR;
};
- instruction.operands[mmm] = mem_oper;
- instruction.operands[rrr] = OperandSpec::RegRRR;
} else if operand_code.bits() == OperandCode::Ibs as u16 {
instruction.imm =
read_imm_signed(&mut bytes_iter, 1, length)? as u64;
@@ -6056,7 +6054,6 @@ fn read_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter: T,
}
},
OperandCode::G_E_mm => {
- instruction.operands[1] = mem_oper;
instruction.modrm_rrr.bank = RegisterBank::MM;
instruction.modrm_rrr.num &= 0b111;
if mem_oper == OperandSpec::RegMMM {
@@ -6066,7 +6063,6 @@ fn read_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter: T,
instruction.operand_count = 2;
},
OperandCode::G_U_mm => {
- instruction.operands[1] = mem_oper;
instruction.modrm_rrr.bank = RegisterBank::D;
if mem_oper != OperandSpec::RegMMM {
return Err(DecodeError::InvalidOperand);
@@ -6076,7 +6072,6 @@ fn read_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter: T,
instruction.operand_count = 2;
},
OperandCode::G_U_xmm => {
- instruction.operands[1] = mem_oper;
instruction.modrm_rrr.bank = RegisterBank::X;
if mem_oper != OperandSpec::RegMMM {
return Err(DecodeError::InvalidOperand);
@@ -6087,7 +6082,6 @@ fn read_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter: T,
op @ OperandCode::G_M_xmm |
op @ OperandCode::G_E_xmm => {
instruction.modrm_rrr.bank = RegisterBank::X;
- instruction.operands[1] = mem_oper;
instruction.operand_count = 2;
if instruction.operands[1] == OperandSpec::RegMMM {
if op == OperandCode::G_M_xmm {
@@ -6112,7 +6106,6 @@ fn read_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter: T,
instruction.operand_count = 3;
},
OperandCode::G_E_mm_Ib => {
- instruction.operands[1] = mem_oper;
instruction.modrm_rrr = RegSpec { bank: RegisterBank::MM, num: (modrm >> 3) & 7 };
instruction.imm =
read_num(&mut bytes_iter, 1)? as u8 as u64;
@@ -6189,7 +6182,6 @@ fn read_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter: T,
instruction.operands[0] = OperandSpec::ImmI32;
}
OperandCode::Gb_Eb_Ib => {
- instruction.operands[1] = mem_oper;
instruction.imm =
read_imm_signed(&mut bytes_iter, 1, length)? as u64;
instruction.operands[2] = OperandSpec::ImmI8;
@@ -6198,7 +6190,6 @@ fn read_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter: T,
OperandCode::Gv_Ev_Iv => {
let opwidth = imm_width_from_prefixes_64(SizeCode::vqp, instruction.prefixes);
let numwidth = if opwidth == 8 { 4 } else { opwidth };
- instruction.operands[1] = mem_oper;
instruction.imm =
read_imm_signed(&mut bytes_iter, numwidth, length)? as u64;
instruction.operands[2] = match opwidth {
@@ -6229,6 +6220,11 @@ fn read_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter: T,
instruction.operands[0] = OperandSpec::ImmU8;
instruction.operand_count = 1;
}
+ OperandCode::Nothing => {
+ instruction.operands[0] = OperandSpec::Nothing;
+ instruction.operand_count = 0;
+ return Ok(());
+ },
_ => {
unlikely_operands(decoder, bytes_iter, instruction, operand_code, mem_oper, length)?;
}
@@ -6239,11 +6235,6 @@ fn read_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter: T,
}
fn unlikely_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter: T, instruction: &mut Instruction, operand_code: OperandCode, mem_oper: OperandSpec, length: &mut u8) -> Result<(), DecodeError> {
match operand_code {
- OperandCode::Nothing => {
- instruction.operands[0] = OperandSpec::Nothing;
- instruction.operand_count = 0;
- return Ok(());
- },
OperandCode::I_1 => {
instruction.imm = 1;
instruction.operands[0] = OperandSpec::ImmU8;
@@ -6285,7 +6276,6 @@ fn unlikely_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter
}
OperandCode::G_mm_U_mm => {
- instruction.operands[1] = mem_oper;
instruction.modrm_rrr.bank = RegisterBank::MM;
if mem_oper != OperandSpec::RegMMM {
return Err(DecodeError::InvalidOperand);
@@ -7124,7 +7114,6 @@ fn unlikely_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter
}
},
OperandCode::G_mm_Edq => {
- instruction.operands[1] = mem_oper;
instruction.modrm_rrr.bank = RegisterBank::MM;
instruction.modrm_rrr.num &= 0b111;
if mem_oper == OperandSpec::RegMMM {
@@ -7136,7 +7125,6 @@ fn unlikely_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter
}
}
OperandCode::G_mm_E => {
- instruction.operands[1] = mem_oper;
instruction.modrm_rrr.bank = RegisterBank::MM;
instruction.modrm_rrr.num &= 0b111;
if mem_oper == OperandSpec::RegMMM {
@@ -7191,7 +7179,6 @@ fn unlikely_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter
},
*/
OperandCode::G_xmm_Edq => {
- instruction.operands[1] = mem_oper;
instruction.modrm_rrr.bank = RegisterBank::X;
if mem_oper == OperandSpec::RegMMM {
if instruction.prefixes.rex().w() {
@@ -7202,7 +7189,6 @@ fn unlikely_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter
}
},
OperandCode::G_xmm_Ed_Ib => {
- instruction.operands[1] = mem_oper;
instruction.operands[2] = OperandSpec::ImmU8;
instruction.operand_count = 3;
instruction.imm =
@@ -7214,14 +7200,12 @@ fn unlikely_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter
}
},
OperandCode::G_xmm_Eq => {
- instruction.operands[1] = mem_oper;
instruction.modrm_rrr.bank = RegisterBank::X;
if mem_oper == OperandSpec::RegMMM {
instruction.modrm_mmm.bank = RegisterBank::Q;
}
},
OperandCode::G_mm_E_xmm => {
- instruction.operands[1] = mem_oper;
instruction.modrm_rrr.bank = RegisterBank::MM;
instruction.modrm_rrr.num &= 0b111;
if mem_oper == OperandSpec::RegMMM {
@@ -7230,7 +7214,6 @@ fn unlikely_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter
},
op @ OperandCode::G_xmm_U_mm |
op @ OperandCode::G_xmm_E_mm => {
- instruction.operands[1] = mem_oper;
instruction.modrm_rrr.bank = RegisterBank::X;
if mem_oper == OperandSpec::RegMMM {
instruction.modrm_mmm.bank = RegisterBank::MM;
@@ -7242,7 +7225,6 @@ fn unlikely_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter
}
},
OperandCode::Rv_Gmm_Ib => {
- instruction.operands[1] = mem_oper;
instruction.operands[2] = OperandSpec::ImmU8;
instruction.operand_count = 3;
instruction.imm =
@@ -7257,7 +7239,6 @@ fn unlikely_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter
}
}
OperandCode::U_mm_G_xmm => {
- instruction.operands[1] = mem_oper;
instruction.modrm_mmm.bank = RegisterBank::X;
if mem_oper == OperandSpec::RegMMM {
instruction.modrm_rrr.bank = RegisterBank::MM;
@@ -7351,7 +7332,6 @@ fn unlikely_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter
};
}
OperandCode::Gd_U_xmm => {
- instruction.operands[1] = mem_oper;
if instruction.operands[1] != OperandSpec::RegMMM {
instruction.opcode = Opcode::Invalid;
return Err(DecodeError::InvalidOperand);
@@ -7360,7 +7340,6 @@ fn unlikely_operands<T: Iterator<Item=u8>>(decoder: &InstDecoder, mut bytes_iter
instruction.modrm_mmm.bank = RegisterBank::X;
}
OperandCode::Gv_E_xmm => {
- instruction.operands[1] = mem_oper;
if instruction.operands[1] == OperandSpec::RegMMM {
instruction.modrm_mmm.bank = RegisterBank::X;
}
generated by cgit v1.1 at 2025-11-04 15:39:14 +0000