From c3257be8b0b5c9f6f5c1c2ad6d48dfa726ec6413 Mon Sep 17 00:00:00 2001 From: iximeow Date: Sun, 9 Aug 2020 02:33:05 -0700 Subject: no more incomplete decoder for vex instructions for now --- src/long_mode/vex.rs | 35 ++++++++++++++++++++++++++++------- 1 file changed, 28 insertions(+), 7 deletions(-) (limited to 'src') diff --git a/src/long_mode/vex.rs b/src/long_mode/vex.rs index 7c4e27d..bbfd508 100644 --- a/src/long_mode/vex.rs +++ b/src/long_mode/vex.rs @@ -826,12 +826,33 @@ fn read_vex_operands>(bytes: &mut T, instruction: &mut Inst instruction.operand_count = 4; Ok(()) } - - VEXOperandCode::G_V_E_xmm_xmm4 | - VEXOperandCode::G_V_E_ymm_ymm4 | - VEXOperandCode::G_V_ymm_E_xmm | + VEXOperandCode::G_V_ymm_E_xmm => { + let modrm = read_modrm(bytes, length)?; + instruction.modrm_rrr = + RegSpec::from_parts((modrm >> 3) & 7,instruction.prefixes.vex().x(), RegisterBank::Y); + instruction.vex_reg.bank = RegisterBank::Y; + let mem_oper = read_E_xmm(bytes, instruction, modrm, length)?; + instruction.operands[0] = OperandSpec::RegRRR; + instruction.operands[1] = OperandSpec::RegVex; + instruction.operands[2] = mem_oper; + instruction.operand_count = 3; + Ok(()) + } VEXOperandCode::G_V_xmm_Ew_imm8 => { - Err(DecodeError::IncompleteDecoder) // :) + let modrm = read_modrm(bytes, length)?; + instruction.modrm_rrr = + RegSpec::from_parts((modrm >> 3) & 7,instruction.prefixes.vex().x(), RegisterBank::X); + instruction.vex_reg.bank = RegisterBank::X; + // TODO: but the memory access is word-sized + let mem_oper = read_E(bytes, instruction, modrm, 4, length)?; + instruction.operands[0] = OperandSpec::RegRRR; + instruction.operands[1] = OperandSpec::RegVex; + instruction.operands[2] = mem_oper; + instruction.imm = read_imm_unsigned(bytes, 1, length)?; + instruction.operands[3] = OperandSpec::ImmI8; + instruction.operand_count = 4; + Ok(()) + } } @@ -2667,9 +2688,9 @@ fn read_vex_instruction>(opcode_map: VEXOpcodeMap, bytes: & VEXOperandCode::G_V_E_xmm_imm8 }), 0x42 => (Opcode::VMPSADBW, if L { - VEXOperandCode::G_E_ymm_imm8 + VEXOperandCode::G_V_E_ymm_imm8 } else { - VEXOperandCode::G_E_xmm_imm8 + VEXOperandCode::G_V_E_xmm_imm8 }), 0x44 => (Opcode::VPCLMULQDQ, if L { instruction.opcode = Opcode::Invalid; -- cgit v1.1