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//! # TEQ (immediate)
//!
//! Test Equivalence (immediate) performs a bitwise exclusive OR operation on a register value and an immediate value. It updates the condition flags based on the result, and discards the result.
#![allow(non_snake_case)]
#![allow(unused)]
use crate::error::Result;
use crate::utils::*;
use super::super::formatter::*;
use super::super::instruction::*;
use super::super::operand::*;
use super::super::consts::*;
use super::super::config::*;
use super::super::decoder::*;
// ---------------------------------------------------------------------------
// Iclass IclassTeqIT1
// ---------------------------------------------------------------------------
/// Type that represents the IclassTeqIT1 instruction class.
pub(crate) struct IclassTeqIT1;
impl IclassTeqIT1 {
/// Tries to decode the instruction in `data`.
pub(crate) fn decode(data: u32, decoder: &mut Decoder) -> Result<Instruction> {
let imm8 = (data >> 0) & 255;
let imm8_post = imm8;
let imm3 = (data >> 12) & 7;
let imm3_post = imm3;
let field_28 = (data >> 27) & 3;
let field_28_post = field_28;
let S = (data >> 20) & 1;
let S_post = S;
let i = (data >> 26) & 1;
let i_post = i;
let field_31 = (data >> 29) & 7;
let field_31_post = field_31;
let Rn = (data >> 16) & 15;
let Rn_post = Rn;
let field_25 = (data >> 25) & 1;
let field_25_post = field_25;
let field_15 = (data >> 15) & 1;
let field_15_post = field_15;
let Rd = (data >> 8) & 15;
let Rd_post = Rd;
let op1 = (data >> 21) & 15;
let op1_post = op1;
return TeqIT1::decode(data as u32, decoder);
unreachable!()
}
}
/// TEQ T1 encoding.
///
/// # Encoding
///
/// <table style="font-family: courier, monospace">
/// <tr>
/// <td style="border: none">31</td>
/// <td style="border: none">30</td>
/// <td style="border: none">29</td>
/// <td style="border: none">28</td>
/// <td style="border: none">27</td>
/// <td style="border: none">26</td>
/// <td style="border: none">25</td>
/// <td style="border: none">24</td>
/// <td style="border: none">23</td>
/// <td style="border: none">22</td>
/// <td style="border: none">21</td>
/// <td style="border: none">20</td>
/// <td style="border: none">19</td>
/// <td style="border: none">18</td>
/// <td style="border: none">17</td>
/// <td style="border: none">16</td>
/// <td style="border: none">15</td>
/// <td style="border: none">14</td>
/// <td style="border: none">13</td>
/// <td style="border: none">12</td>
/// <td style="border: none">11</td>
/// <td style="border: none">10</td>
/// <td style="border: none">9</td>
/// <td style="border: none">8</td>
/// <td style="border: none">7</td>
/// <td style="border: none">6</td>
/// <td style="border: none">5</td>
/// <td style="border: none">4</td>
/// <td style="border: none">3</td>
/// <td style="border: none">2</td>
/// <td style="border: none">1</td>
/// <td style="border: none">0</td>
/// </tr>
/// <tr>
/// <td style="text-align: center; border-right: none" colspan="1">1</td>
/// <td style="text-align: center; border-left: none; border-right: none" colspan="1">1</td>
/// <td style="text-align: center; border-left: none" colspan="1">1</td>
/// <td style="text-align: center; border-right: none" colspan="1">1</td>
/// <td style="text-align: center; border-left: none" colspan="1">0</td>
/// <td style="text-align: center" colspan="1">i</td>
/// <td style="text-align: center; border-right: none" colspan="1">0</td>
/// <td style="text-align: center; border-right: none" colspan="1">0</td>
/// <td style="text-align: center; border-left: none; border-right: none" colspan="1">1</td>
/// <td style="text-align: center; border-left: none; border-right: none" colspan="1">0</td>
/// <td style="text-align: center; border-left: none" colspan="1">0</td>
/// <td style="text-align: center; border-right: none" colspan="1">1</td>
/// <td style="text-align: center" colspan="4">Rn</td>
/// <td style="text-align: center; border-right: none" colspan="1">0</td>
/// <td style="text-align: center" colspan="3">imm3</td>
/// <td style="text-align: center; border-right: none" colspan="1">1</td>
/// <td style="text-align: center; border-left: none; border-right: none" colspan="1">1</td>
/// <td style="text-align: center; border-left: none; border-right: none" colspan="1">1</td>
/// <td style="text-align: center; border-left: none" colspan="1">1</td>
/// <td style="text-align: center" colspan="8">imm8</td>
/// </tr>
/// <tr>
/// <td style="text-align: center; border: none" colspan="3"></td>
/// <td style="text-align: center; border: none" colspan="2"></td>
/// <td style="text-align: center; border: none" colspan="1"></td>
/// <td style="text-align: center; border: none" colspan="1"></td>
/// <td style="text-align: center; border: none" colspan="4">op1</td>
/// <td style="text-align: center; border: none" colspan="1">S</td>
/// <td style="text-align: center; border: none" colspan="4"></td>
/// <td style="text-align: center; border: none" colspan="1"></td>
/// <td style="text-align: center; border: none" colspan="3"></td>
/// <td style="text-align: center; border: none" colspan="4">Rd</td>
/// <td style="text-align: center; border: none" colspan="8"></td>
/// </tr>
/// </table>
pub struct TeqIT1;
impl TeqIT1 {
/// Returns the instruction mnemonic.
pub fn mnemonic(_instr: &Instruction) -> Mnemonic {
Mnemonic::TEQ
}
/// Returns the instruction condition information.
pub fn condition(instr: &Instruction) -> ConditionalInstruction {
ConditionalInstruction::Condition(0, false, false)
}
/// Returns the instruction size.
pub fn size(_instr: &Instruction) -> usize {4}
/// Decodes the instruction in `data`.
pub fn decode(data: u32, decoder: &mut Decoder) -> Result<Instruction> {
// Fields are extracted from the input value.
let i = (data >> 26) & 1;
let i_post = i;
let Rn = (data >> 16) & 15;
let Rn_post = Rn;
let imm3 = (data >> 12) & 7;
let imm3_post = imm3;
let imm8 = (data >> 0) & 255;
let imm8_post = imm8;
// Compute the dependency values for the operands.
let i_imm3_imm8_post = (i << 11) | (imm3 << 8) | imm8;
let Rn_post = Rn;
// Operand values are computed from the base fields and the dependencies.
let op_0 = MnemonicCondition::Al;
let op_1 = Register::decode(Rn_post)?;
let op_2 = ModifiedImmediate::decode(i_imm3_imm8_post);
// Instruction creation from the operands.
let mut instr = Instruction::builder(Code::TEQ_i_T1)
.operand(0, op_0)?
.operand(1, op_1)?
.operand(2, op_2)?
.build();
Ok(instr)
}
pub fn encode(instr: &Instruction, buf: &mut Vec<u8>) -> Result<usize> {
// Retrieve all operand values.
let Rn_pre = instr.op1().as_register()?.encode();
let i_imm3_imm8_pre = instr.op2().as_modified_immediate()?.encode();
// Compute all instruction fields from the operand values.
let Rn = (Rn_pre & 15);
let imm8 = (i_imm3_imm8_pre & 255);
let imm3 = (i_imm3_imm8_pre >> 8) & 7;
let i = (i_imm3_imm8_pre >> 11) & 1;
// Add all fields to the base instruction encoding.
let mut instr: u32 = 0b11110000100100000000111100000000;
instr |= (Rn & 15) << 16;
instr |= (imm8 & 255) << 0;
instr |= (imm3 & 7) << 12;
instr |= (i & 1) << 26;
let instr_1 = (instr & 0xffff) as u16;
let instr_2 = ((instr >> 16) & 0xffff) as u16;
buf.extend(instr_2.to_le_bytes());
buf.extend(instr_1.to_le_bytes());
Ok(4)
}
/// Encode an instruction part of an instruction block into `buf`.
pub fn encode_block(instr: &mut Instruction, buf: &mut Vec<u8>, labels: &std::collections::HashMap<u64, u64>) -> Result<usize> {
Self::encode(instr, buf)
}
/// Verifies that operand #0 is valid.
pub fn check_op0(instr: &Instruction, op: &Operand) -> Result<()> {
if let Operand::MnemonicCondition(r) = op {
return Ok(())
}
todo!()
}
/// Verifies that operand #1 is valid.
pub fn check_op1(instr: &Instruction, op: &Operand) -> Result<()> {
if let Operand::Register(r) = op {
return Ok(())
}
todo!()
}
/// Verifies that operand #2 is valid.
pub fn check_op2(instr: &Instruction, op: &Operand) -> Result<()> {
if let Operand::ModifiedImmediate(i) = op {
if i.0 >= 1 << 13 {
todo!()
}
return Ok(())
}
todo!()
}
/// Verifies that operand #3 is valid.
pub fn check_op3(instr: &Instruction, op: &Operand) -> Result<()> {
todo!()
}
/// Verifies that operand #4 is valid.
pub fn check_op4(instr: &Instruction, op: &Operand) -> Result<()> {
todo!()
}
/// Verifies that operand #5 is valid.
pub fn check_op5(instr: &Instruction, op: &Operand) -> Result<()> {
todo!()
}
/// Verifies that operand #6 is valid.
pub fn check_op6(instr: &Instruction, op: &Operand) -> Result<()> {
todo!()
}
/// Formats the instruction.
pub fn format(instr: &Instruction, fmt: &mut impl Formatter, output: &mut impl FormatterOutput, config: &Config) -> Result<()> {
fmt.format_mnemonic(output, &config.global, &config.instructions.teq_i_t1, &instr)?;
fmt.format_operand(output, &config.global, &config.instructions.teq_i_t1, &instr, 0)?;
fmt.format_qualifier(output, &config.global, &config.instructions.teq_i_t1, &instr, FormatterQualifier::Wide, false, false)?;
fmt.format_punctuation(output, &config.global, &config.instructions.teq_i_t1, &instr, FormatterTextKind::Space)?;
fmt.format_operand(output, &config.global, &config.instructions.teq_i_t1, &instr, 1)?;
fmt.format_punctuation(output, &config.global, &config.instructions.teq_i_t1, &instr, FormatterTextKind::Comma)?;
fmt.format_punctuation(output, &config.global, &config.instructions.teq_i_t1, &instr, FormatterTextKind::NumSign)?;
fmt.format_operand(output, &config.global, &config.instructions.teq_i_t1, &instr, 2)?;
Ok(())
}
}
/// Type that represents alias identifiers for [`TeqIT1`].
#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Debug, Hash)]
pub enum TeqIT1Aliases {
None,
}
/// Type that represents encoding identifiers for [`TeqIT1`].
#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Debug, Hash)]
pub enum TeqIT1Encodings {
None
}