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//! # MCR
//!
//! Move to System register from general-purpose register or execute a System instruction. This instruction copies the value of a general-purpose register to a System register, or executes a System instruction.
#![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 IclassMcrA1
// ---------------------------------------------------------------------------
/// Type that represents the IclassMcrA1 instruction class.
pub(crate) struct IclassMcrA1;
impl IclassMcrA1 {
/// Tries to decode the instruction in `data`.
pub(crate) fn decode(data: u32, decoder: &mut Decoder) -> Result<Instruction> {
let Rt = (data >> 12) & 15;
let Rt_post = Rt;
let field_11 = (data >> 11) & 1;
let field_11_post = field_11;
let field_10 = (data >> 9) & 3;
let field_10_post = field_10;
let cp15 = (data >> 8) & 1;
let cp15_post = cp15;
let opc2 = (data >> 5) & 7;
let opc2_post = opc2;
let opc1 = (data >> 21) & 7;
let opc1_post = opc1;
let CRm = (data >> 0) & 15;
let CRm_post = CRm;
let field_4 = (data >> 4) & 1;
let field_4_post = field_4;
let L = (data >> 20) & 1;
let L_post = L;
let field_27 = (data >> 26) & 3;
let field_27_post = field_27;
let cond = (data >> 28) & 15;
let cond_post = cond;
let field_25 = (data >> 24) & 3;
let field_25_post = field_25;
let CRn = (data >> 16) & 15;
let CRn_post = CRn;
return McrA1::decode(data as u32, decoder);
unreachable!()
}
}
/// MCR A1 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="4">!= 1111</td>
/// <td style="text-align: center; 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="3">opc1</td>
/// <td style="text-align: center; border-right: none" colspan="1">0</td>
/// <td style="text-align: center" colspan="4">CRn</td>
/// <td style="text-align: center" colspan="4">Rt</td>
/// <td style="text-align: center; border-right: 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">1</td>
/// <td style="text-align: center" colspan="1">cp15</td>
/// <td style="text-align: center" colspan="3">opc2</td>
/// <td style="text-align: center; border-right: none" colspan="1">1</td>
/// <td style="text-align: center" colspan="4">CRm</td>
/// </tr>
/// <tr>
/// <td style="text-align: center; border: none" colspan="4">cond</td>
/// <td style="text-align: center; border: none" colspan="2"></td>
/// <td style="text-align: center; border: none" colspan="2"></td>
/// <td style="text-align: center; border: none" colspan="3"></td>
/// <td style="text-align: center; border: none" colspan="1">L</td>
/// <td style="text-align: center; border: none" colspan="4"></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="2"></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="1"></td>
/// <td style="text-align: center; border: none" colspan="4"></td>
/// </tr>
/// </table>
pub struct McrA1;
impl McrA1 {
/// Returns the instruction mnemonic.
pub fn mnemonic(_instr: &Instruction) -> Mnemonic {
Mnemonic::MCR
}
/// 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 cond = (data >> 28) & 15;
let cond_post = cond;
let opc1 = (data >> 21) & 7;
let opc1_post = opc1;
let CRn = (data >> 16) & 15;
let CRn_post = CRn;
let Rt = (data >> 12) & 15;
let Rt_post = Rt;
let cp15 = (data >> 8) & 1;
let cp15_post = cp15;
let opc2 = (data >> 5) & 7;
let opc2_post = opc2;
let CRm = (data >> 0) & 15;
let CRm_post = CRm;
// Operand values are computed from the base fields.
let cond_post = cond;
let op_0 = MnemonicCondition::decode(cond_post)?;
let cp15_post = cp15;
let op_1 = SysRegEncodingSpace::decode(cp15_post)?;
let opc1_post = opc1;
let op_2 = opc1_post as u32;
let Rt_post = Rt;
let op_3 = Register::decode(Rt_post)?;
let CRn_post = CRn;
let op_4 = SysRegRegister::decode(CRn_post)?;
let CRm_post = CRm;
let op_5 = SysRegRegister::decode(CRm_post)?;
let opc2_post = opc2;
let op_6 = opc2_post as u32;
// Instruction creation from the operands.
let mut instr = Instruction::builder(Code::MCR_A1)
.operand(0, op_0)?
.operand(1, op_1)?
.operand(2, op_2)?
.operand(3, op_3)?
.operand(4, op_4)?
.operand(5, op_5)?
.operand(6, op_6)?
.build();
Ok(instr)
}
/// Encodes the instruction into `buf`.
pub fn encode(instr: &Instruction, buf: &mut Vec<u8>) -> Result<usize> {
// Retrieve all operand values.
let cond_pre = instr.op0().as_mnemonic_condition()?.encode();
let cp15_pre = instr.op1().as_sysreg_encoding_space()?.encode();
let opc1_pre = instr.op2().as_unsigned_immediate()? as u32;
let Rt_pre = instr.op3().as_register()?.encode();
let CRn_pre = instr.op4().as_sysreg_register()?.encode();
let CRm_pre = instr.op5().as_sysreg_register()?.encode();
let opc2_pre = instr.op6().as_unsigned_immediate()? as u32;
// Compute all instruction fields from the operand values.
let cond = (cond_pre & 15);
let cp15 = (cp15_pre & 1);
let opc1_pre = opc1_pre;
let opc1 = (opc1_pre & 7);
let Rt = (Rt_pre & 15);
let CRn = (CRn_pre & 15);
let CRm = (CRm_pre & 15);
let opc2_pre = opc2_pre;
let opc2 = (opc2_pre & 7);
// Add all fields to the base instruction encoding.
let mut instr: u32 = 0b00001110000000000000111000010000;
instr |= (cond & 15) << 28;
instr |= (cp15 & 1) << 8;
instr |= (opc1 & 7) << 21;
instr |= (Rt & 15) << 12;
instr |= (CRn & 15) << 16;
instr |= (CRm & 15) << 0;
instr |= (opc2 & 7) << 5;
let bytes = instr.to_le_bytes();
let len = bytes.len();
buf.extend(bytes);
Ok(len)
}
/// 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::SysRegEncodingSpace(_) = op {
return Ok(())
}
todo!()
}
/// Verifies that operand #2 is valid.
pub fn check_op2(instr: &Instruction, op: &Operand) -> Result<()> {
if let Operand::SignedImmediate(i) = op {
if !(0..=7).contains(i) {
todo!()
}
return Ok(())
}
if let Operand::UnsignedImmediate(i) = op {
if !(0..=7).contains(i) {
todo!()
}
return Ok(())
}
todo!()
}
/// Verifies that operand #3 is valid.
pub fn check_op3(instr: &Instruction, op: &Operand) -> Result<()> {
if let Operand::Register(r) = op {
return Ok(())
}
todo!()
}
/// Verifies that operand #4 is valid.
pub fn check_op4(instr: &Instruction, op: &Operand) -> Result<()> {
if let Operand::SysRegRegister(_) = op {
return Ok(())
}
todo!()
}
/// Verifies that operand #5 is valid.
pub fn check_op5(instr: &Instruction, op: &Operand) -> Result<()> {
if let Operand::SysRegRegister(_) = op {
return Ok(())
}
todo!()
}
/// Verifies that operand #6 is valid.
pub fn check_op6(instr: &Instruction, op: &Operand) -> Result<()> {
if let Operand::SignedImmediate(i) = op {
if !(0..=7).contains(i) {
todo!()
}
return Ok(())
}
if let Operand::UnsignedImmediate(i) = op {
if !(0..=7).contains(i) {
todo!()
}
return Ok(())
}
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.mcr_a1, &instr)?;
fmt.format_operand(output, &config.global, &config.instructions.mcr_a1, &instr, 0)?;
fmt.format_qualifier(output, &config.global, &config.instructions.mcr_a1, &instr, FormatterQualifier::Wide, false, false)?;
fmt.format_punctuation(output, &config.global, &config.instructions.mcr_a1, &instr, FormatterTextKind::Space)?;
fmt.format_operand(output, &config.global, &config.instructions.mcr_a1, &instr, 1)?;
fmt.format_punctuation(output, &config.global, &config.instructions.mcr_a1, &instr, FormatterTextKind::Comma)?;
fmt.format_punctuation(output, &config.global, &config.instructions.mcr_a1, &instr, FormatterTextKind::NumSign)?;
;
fmt.format_operand(output, &config.global, &config.instructions.mcr_a1, &instr, 2)?;
fmt.format_punctuation(output, &config.global, &config.instructions.mcr_a1, &instr, FormatterTextKind::Comma)?;
fmt.format_operand(output, &config.global, &config.instructions.mcr_a1, &instr, 3)?;
fmt.format_punctuation(output, &config.global, &config.instructions.mcr_a1, &instr, FormatterTextKind::Comma)?;
fmt.format_operand(output, &config.global, &config.instructions.mcr_a1, &instr, 4)?;
fmt.format_punctuation(output, &config.global, &config.instructions.mcr_a1, &instr, FormatterTextKind::Comma)?;
fmt.format_operand(output, &config.global, &config.instructions.mcr_a1, &instr, 5)?;
if true {
fmt.format_punctuation(output, &config.global, &config.instructions.mcr_a1, &instr, FormatterTextKind::Comma)?;
fmt.format_punctuation(output, &config.global, &config.instructions.mcr_a1, &instr, FormatterTextKind::NumSign)?;
;
fmt.format_operand(output, &config.global, &config.instructions.mcr_a1, &instr, 6)?;
};
Ok(())
}
}
/// Type that represents alias identifiers for [`McrA1`].
#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Debug, Hash)]
pub enum McrA1Aliases {
None,
}
/// Type that represents encoding identifiers for [`McrA1`].
#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Debug, Hash)]
pub enum McrA1Encodings {
None
}