From 48559b18574b44e2de879a5c641ab602ec22f0d8 Mon Sep 17 00:00:00 2001 From: iximeow Date: Sun, 4 Jul 2021 12:20:13 -0700 Subject: fix several incorrect tests and docs in 64- and 32-bit modes --- src/protected_mode/display.rs | 12 +++++----- src/protected_mode/mod.rs | 55 ++++++++++++++++++++++++++++++------------- src/protected_mode/vex.rs | 28 ++++++---------------- 3 files changed, 52 insertions(+), 43 deletions(-) (limited to 'src/protected_mode') diff --git a/src/protected_mode/display.rs b/src/protected_mode/display.rs index baca1a2..c5892c2 100644 --- a/src/protected_mode/display.rs +++ b/src/protected_mode/display.rs @@ -1328,7 +1328,7 @@ const MNEMONICS: &[&'static str] = &[ "loopnz", "loopz", "loop", - "jrcxz", + "jecxz", "pusha", "popa", "bound", @@ -1337,8 +1337,8 @@ const MNEMONICS: &[&'static str] = &[ "aaa", "das", "daa", - "amx", - "adx", + "aam", + "aad", "movdir64b", "movdiri", "aesdec128kl", @@ -2332,8 +2332,8 @@ impl Colorize for Opcode { Opcode::AAS | Opcode::DAS | Opcode::DAA | - Opcode::ADX | - Opcode::AMX | + Opcode::AAD | + Opcode::AAM | Opcode::KADDB | Opcode::KANDB | Opcode::KANDNB | @@ -2403,7 +2403,7 @@ impl Colorize for Opcode { Opcode::LOOPNZ | Opcode::LOOPZ | Opcode::LOOP | - Opcode::JRCXZ | + Opcode::JECXZ | Opcode::CALL | Opcode::CALLF | Opcode::JMP | diff --git a/src/protected_mode/mod.rs b/src/protected_mode/mod.rs index 3678bf8..a6ad2ee 100644 --- a/src/protected_mode/mod.rs +++ b/src/protected_mode/mod.rs @@ -888,7 +888,7 @@ const REGISTER_CLASS_NAMES: &[&'static str] = &[ "eflags", ]; -/// high-level register classes in an x86 machine, such as "8-byte general purpose", "xmm", "x87", +/// high-level register classes in an x86 machine, such as "4-byte general purpose", "xmm", "x87", /// and so on. constants in this module are useful for inspecting the register class of a decoded /// instruction. as an example: /// ``` @@ -2078,7 +2078,7 @@ pub enum Opcode { LOOPNZ, LOOPZ, LOOP, - JRCXZ, + JECXZ, PUSHA, POPA, @@ -2088,8 +2088,8 @@ pub enum Opcode { AAA, DAS, DAA, - AMX, - ADX, + AAM, + AAD, // started shipping in Tremont, 2020 sept 23 MOVDIR64B, @@ -5471,8 +5471,8 @@ const OPCODES: [OpcodeRecord; 256] = [ OpcodeRecord(Interpretation::Instruction(Opcode::Invalid), OperandCode::ModRM_0xd1_Ev_1), OpcodeRecord(Interpretation::Instruction(Opcode::Invalid), OperandCode::ModRM_0xd2_Eb_CL), OpcodeRecord(Interpretation::Instruction(Opcode::Invalid), OperandCode::ModRM_0xd3_Ev_CL), - OpcodeRecord(Interpretation::Instruction(Opcode::AMX), OperandCode::Ib), - OpcodeRecord(Interpretation::Instruction(Opcode::ADX), OperandCode::Ib), + OpcodeRecord(Interpretation::Instruction(Opcode::AAM), OperandCode::Ib), + OpcodeRecord(Interpretation::Instruction(Opcode::AAD), OperandCode::Ib), OpcodeRecord(Interpretation::Instruction(Opcode::SALC), OperandCode::Nothing), // XLAT OpcodeRecord(Interpretation::Instruction(Opcode::XLAT), OperandCode::Nothing), @@ -5496,7 +5496,7 @@ const OPCODES: [OpcodeRecord; 256] = [ OpcodeRecord(Interpretation::Instruction(Opcode::LOOPNZ), OperandCode::Ibs), OpcodeRecord(Interpretation::Instruction(Opcode::LOOPZ), OperandCode::Ibs), OpcodeRecord(Interpretation::Instruction(Opcode::LOOP), OperandCode::Ibs), - OpcodeRecord(Interpretation::Instruction(Opcode::JRCXZ), OperandCode::Ibs), + OpcodeRecord(Interpretation::Instruction(Opcode::JECXZ), OperandCode::Ibs), OpcodeRecord(Interpretation::Instruction(Opcode::IN), OperandCode::AL_Ib), OpcodeRecord(Interpretation::Instruction(Opcode::IN), OperandCode::AX_Ib), OpcodeRecord(Interpretation::Instruction(Opcode::OUT), OperandCode::Ib_AL), @@ -5721,19 +5721,35 @@ fn read_M_16bit::Address, { - instr.disp = read_num(words, 1)?; + instr.disp = read_num(words, 1)? as i8 as i32 as u32; if mmm > 3 { - Ok(OperandSpec::RegDisp) + if instr.disp != 0 { + Ok(OperandSpec::RegDisp) + } else { + Ok(OperandSpec::Deref) + } } else { - Ok(OperandSpec::RegIndexBaseDisp) + if instr.disp != 0 { + Ok(OperandSpec::RegIndexBaseDisp) + } else { + Ok(OperandSpec::RegIndexBase) + } } }, 0b10 => { - instr.disp = read_num(words, 2)?; + instr.disp = read_num(words, 2)? as i16 as i32 as u32; if mmm > 3 { - Ok(OperandSpec::RegDisp) + if instr.disp != 0 { + Ok(OperandSpec::RegDisp) + } else { + Ok(OperandSpec::Deref) + } } else { - Ok(OperandSpec::RegIndexBaseDisp) + if instr.disp != 0 { + Ok(OperandSpec::RegIndexBaseDisp) + } else { + Ok(OperandSpec::RegIndexBase) + } } }, _ => { @@ -7528,7 +7544,7 @@ fn read_operands::Address, ::Address, > 3) & 7 }; instruction.operands[0] = OperandSpec::RegRRR; instruction.operands[1] = read_E_xmm(words, instruction, modrm)?; + if instruction.opcode == Opcode::CVTTSD2SI || instruction.opcode == Opcode::CVTSD2SI { + instruction.regs[0].bank = RegisterBank::D; + } if instruction.operands[1] != OperandSpec::RegMMM { if [Opcode::PMOVSXBQ, Opcode::PMOVZXBQ].contains(&instruction.opcode) { instruction.mem_size = 2; @@ -8462,7 +8481,7 @@ fn unlikely_operands::Address, { instruction.opcode = Opcode::RDPID; - instruction.operands[0] = read_E(words, instruction, modrm, opwidth)?; + instruction.operands[0] = read_E(words, instruction, modrm, 4)?; if instruction.operands[0] != OperandSpec::RegMMM { return Err(DecodeError::InvalidOperand); } @@ -9668,7 +9687,11 @@ fn unlikely_operands::Address, { instruction.opcode = Opcode::UMONITOR; - instruction.regs[1] = RegSpec::from_parts(m, RegisterBank::D); + if instruction.prefixes.address_size() { + instruction.regs[1] = RegSpec::from_parts(m, RegisterBank::W); + } else { + instruction.regs[1] = RegSpec::from_parts(m, RegisterBank::D); + }; instruction.operands[0] = OperandSpec::RegMMM; instruction.operand_count = 1; } diff --git a/src/protected_mode/vex.rs b/src/protected_mode/vex.rs index 053d1aa..3550f77 100644 --- a/src/protected_mode/vex.rs +++ b/src/protected_mode/vex.rs @@ -412,7 +412,7 @@ fn read_vex_operands::Address, ::Address, (Opcode::VPMINSW, if L { + 0xDA => (Opcode::VPMINUB, if L { VEXOperandCode::G_V_E_ymm } else { VEXOperandCode::G_V_E_xmm @@ -3130,12 +3130,12 @@ fn read_vex_instruction::Address, (Opcode::VROUNDSS, if L { - VEXOperandCode::G_V_E_ymm_imm8 + VEXOperandCode::G_V_E_xmm_imm8 } else { VEXOperandCode::G_V_E_xmm_imm8 }), 0x0B => (Opcode::VROUNDSD, if L { - VEXOperandCode::G_V_E_ymm_imm8 + VEXOperandCode::G_V_E_xmm_imm8 } else { VEXOperandCode::G_V_E_xmm_imm8 }), @@ -3171,14 +3171,7 @@ fn read_vex_instruction::Address, if instruction.prefixes.vex_unchecked().w() { - (Opcode::VPEXTRQ, if L { - instruction.opcode = Opcode::Invalid; - return Err(DecodeError::InvalidOpcode); - } else { - VEXOperandCode::Ev_G_xmm_imm8 - }) - } else { + 0x16 => { (Opcode::VPEXTRD, if L { instruction.opcode = Opcode::Invalid; return Err(DecodeError::InvalidOpcode); @@ -3198,7 +3191,7 @@ fn read_vex_instruction::Address, ::Address, if instruction.prefixes.vex_unchecked().w() { - (Opcode::VPINSRQ, if L { - instruction.opcode = Opcode::Invalid; - return Err(DecodeError::InvalidOpcode); - } else { - VEXOperandCode::G_V_xmm_Ev_imm8 - }) - } else { + 0x22 => { (Opcode::VPINSRD, if L { instruction.opcode = Opcode::Invalid; return Err(DecodeError::InvalidOpcode); -- cgit v1.1