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//! # POP
//!
//! Pop Multiple Registers from Stack loads multiple general-purpose registers from the stack, loading from consecutive memory locations starting at the address in SP, and updates SP to point just above the loaded data.
#![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 IclassPopT1
// ---------------------------------------------------------------------------
/// Type that represents the IclassPopT1 instruction class.
pub(crate) struct IclassPopT1;
impl IclassPopT1 {
/// Tries to decode the instruction in `data`.
pub(crate) fn decode(data: u32, decoder: &mut Decoder) -> Result<Instruction> {
let P = (data >> 8) & 1;
let P_post = P;
let field_10 = (data >> 9) & 3;
let field_10_post = field_10;
let field_15 = (data >> 12) & 15;
let field_15_post = field_15;
let L = (data >> 11) & 1;
let L_post = L;
let register_list = (data >> 0) & 255;
let register_list_post = register_list;
return PopT1::decode(data as u32, decoder);
unreachable!()
}
}
/// POP T1 encoding.
///
/// # Encoding
///
/// <table style="font-family: courier, monospace">
/// <tr>
/// <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">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" colspan="1">1</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">0</td>
/// <td style="text-align: center" colspan="1">P</td>
/// <td style="text-align: center" colspan="8">register_list</td>
/// </tr>
/// <tr>
/// <td style="text-align: center; border: none" colspan="4"></td>
/// <td style="text-align: center; border: none" colspan="1">L</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="8"></td>
/// </tr>
/// </table>
pub struct PopT1;
impl PopT1 {
/// Returns the instruction mnemonic.
pub fn mnemonic(instr: &Instruction) -> Mnemonic {
match instr.encoding {
Encoding::Alt1 => Mnemonic::POP,
Encoding::Alt2 => Mnemonic::LDM,
_ => todo!()
}
}
/// Returns the instruction condition information.
pub fn condition(instr: &Instruction) -> ConditionalInstruction {
match instr.encoding {
Encoding::Alt1 => {
ConditionalInstruction::Condition(0, false, false)
}
Encoding::Alt2 => {
ConditionalInstruction::Condition(0, false, false)
}
_ => todo!()
}
}
/// Returns the instruction size.
pub fn size(instr: &Instruction) -> usize {
match instr.encoding {
Encoding::Alt1 => 2 ,
Encoding::Alt2 => 2 ,
_ => todo!()
}
}
/// Decodes the instruction in `data`.
pub fn decode(data: u32, decoder: &mut Decoder) -> Result<Instruction> {
let P = (data >> 8) & 1;
let P_post = P;
let register_list = (data >> 0) & 255;
let register_list_post = register_list;
let P_register_list_post = (P << 8) | register_list;
let P_post = P;
let register_list_post = register_list;
// Checks if preferred encodings have been configured.
if let Some(encoding) = decoder.config.instructions.pop_t1.encodings {
match encoding {
PopT1Encodings::Alt1 => {
// Operand values are computed from the base fields.
let op_0 = MnemonicCondition::Al;
let P_register_list_post = (P << 8) | register_list;
let register_list_post = register_list;
let P_post = P;
let op_1 = RegisterList::decode((P_post << 15) | (0 << 14) | register_list_post);
// The instruction is then created from the operands.
let mut instr = Instruction::builder_multi(Code::POP_T1, Encoding::Alt1)
.operand(0, op_0)?
.operand(1, op_1)?
.build();
return Ok(instr);
}
PopT1Encodings::Alt2 => {
// Operand values are computed from the base fields.
let op_0 = MnemonicCondition::Al;
let op_1 = Register::SP;
let P_register_list_post = (P << 8) | register_list;
let register_list_post = register_list;
let P_post = P;
let op_2 = RegisterList::decode((P_post << 15) | (0 << 14) | register_list_post);
// The instruction is then created from the operands.
let mut instr = Instruction::builder_multi(Code::POP_T1, Encoding::Alt2)
.operand(0, op_0)?
.operand(1, op_1)?
.operand(2, op_2)?
.build();
return Ok(instr);
}
}
}
// Operand values are computed from the base fields.
let op_0 = MnemonicCondition::Al;
let P_register_list_post = (P << 8) | register_list;
let register_list_post = register_list;
let P_post = P;
let op_1 = RegisterList::decode((P_post << 15) | (0 << 14) | register_list_post);
// The instruction is then created from the operands.
let mut instr = Instruction::builder_multi(Code::POP_T1, Encoding::Alt1)
.operand(0, op_0)?
.operand(1, op_1)?
.build();
return Ok(instr);
// Operand values are computed from the base fields.
let op_0 = MnemonicCondition::Al;
let op_1 = Register::SP;
let P_register_list_post = (P << 8) | register_list;
let register_list_post = register_list;
let P_post = P;
let op_2 = RegisterList::decode((P_post << 15) | (0 << 14) | register_list_post);
// The instruction is then created from the operands.
let mut instr = Instruction::builder_multi(Code::POP_T1, Encoding::Alt2)
.operand(0, op_0)?
.operand(1, op_1)?
.operand(2, op_2)?
.build();
return Ok(instr);
unreachable!()
}
/// Encodes the instruction into `buf`.
pub fn encode(instr: &Instruction, buf: &mut Vec<u8>) -> Result<usize> {
match instr.encoding {
Encoding::Alt1 => {
// Retrieve all operand values.
let (P_pre, _, register_list_pre) = {
let value = instr.op1().as_register_list()?.encode();
((value >> 15) & 1, (value >> 14) & 1, value & 0x3fff)
};
// Compute all instruction fields from the operand values.
let register_list = (register_list_pre & 255);
let P = (P_pre & 1);
// Add all field values to the base instruction encoding.
let mut instr: u32 = 0b1011110000000000;
instr |= (register_list & 255) << 0;
instr |= (P & 1) << 8;
let instr = instr as u16;
buf.extend(instr.to_le_bytes());
return Ok(2);
}
Encoding::Alt2 => {
// Retrieve all operand values.
let (P_pre, _, register_list_pre) = {
let value = instr.op2().as_register_list()?.encode();
((value >> 15) & 1, (value >> 14) & 1, value & 0x3fff)
};
// Compute all instruction fields from the operand values.
let register_list = (register_list_pre & 255);
let P = (P_pre & 1);
// Add all field values to the base instruction encoding.
let mut instr: u32 = 0b1011110000000000;
instr |= (register_list & 255) << 0;
instr |= (P & 1) << 8;
let instr = instr as u16;
buf.extend(instr.to_le_bytes());
return Ok(2);
}
_ => todo!()
}
unreachable!()
}
/// 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> {
match instr.encoding {
Encoding::Alt1 => {
Self::encode(instr, buf)
}
Encoding::Alt2 => {
Self::encode(instr, buf)
}
_ => todo!()
}
}
/// Verifies that operand #0 is valid.
pub fn check_op0(instr: &Instruction, op: &Operand) -> Result<()> {
match instr.encoding {
Encoding::Alt1 => {
if let Operand::MnemonicCondition(r) = op {
return Ok(())
}
todo!()
}
Encoding::Alt2 => {
if let Operand::MnemonicCondition(r) = op {
return Ok(())
}
todo!()
}
_ => todo!()
}
unreachable!()
}
/// Verifies that operand #1 is valid.
pub fn check_op1(instr: &Instruction, op: &Operand) -> Result<()> {
match instr.encoding {
Encoding::Alt1 => {
if let Operand::RegisterList(_) = op {
return Ok(())
}
todo!()
}
Encoding::Alt2 => {
if let Operand::Register(Register::SP) = op {
return Ok(())
}
todo!()
}
_ => todo!()
}
unreachable!()
}
/// Verifies that operand #2 is valid.
pub fn check_op2(instr: &Instruction, op: &Operand) -> Result<()> {
match instr.encoding {
Encoding::Alt1 => {
todo!()
}
Encoding::Alt2 => {
if let Operand::RegisterList(_) = op {
return Ok(())
}
todo!()
}
_ => todo!()
}
unreachable!()
}
/// Verifies that operand #3 is valid.
pub fn check_op3(instr: &Instruction, op: &Operand) -> Result<()> {
match instr.encoding {
Encoding::Alt1 => {
todo!()
}
Encoding::Alt2 => {
todo!()
}
_ => todo!()
}
unreachable!()
}
/// Verifies that operand #4 is valid.
pub fn check_op4(instr: &Instruction, op: &Operand) -> Result<()> {
match instr.encoding {
Encoding::Alt1 => {
todo!()
}
Encoding::Alt2 => {
todo!()
}
_ => todo!()
}
unreachable!()
}
/// Verifies that operand #5 is valid.
pub fn check_op5(instr: &Instruction, op: &Operand) -> Result<()> {
match instr.encoding {
Encoding::Alt1 => {
todo!()
}
Encoding::Alt2 => {
todo!()
}
_ => todo!()
}
unreachable!()
}
/// Verifies that operand #6 is valid.
pub fn check_op6(instr: &Instruction, op: &Operand) -> Result<()> {
match instr.encoding {
Encoding::Alt1 => {
todo!()
}
Encoding::Alt2 => {
todo!()
}
_ => todo!()
}
unreachable!()
}
/// Formats the instruction.
pub fn format(instr: &Instruction, fmt: &mut impl Formatter, output: &mut impl FormatterOutput, config: &Config) -> Result<()> {
match instr.encoding {
Encoding::Alt1 => {
fmt.format_mnemonic(output, &config.global, &config.instructions.pop_t1, &instr)?;
fmt.format_operand(output, &config.global, &config.instructions.pop_t1, &instr, 0)?;
fmt.format_qualifier(output, &config.global, &config.instructions.pop_t1, &instr, FormatterQualifier::Narrow, false, false)?;
fmt.format_punctuation(output, &config.global, &config.instructions.pop_t1, &instr, FormatterTextKind::Space)?;
fmt.format_operand(output, &config.global, &config.instructions.pop_t1, &instr, 1)?;
return Ok(());
}
Encoding::Alt2 => {
fmt.format_mnemonic(output, &config.global, &config.instructions.pop_t1, &instr)?;
fmt.format_operand(output, &config.global, &config.instructions.pop_t1, &instr, 0)?;
fmt.format_qualifier(output, &config.global, &config.instructions.pop_t1, &instr, FormatterQualifier::Narrow, false, false)?;
fmt.format_punctuation(output, &config.global, &config.instructions.pop_t1, &instr, FormatterTextKind::Space)?;
fmt.format_operand(output, &config.global, &config.instructions.pop_t1, &instr, 1)?;
fmt.format_punctuation(output, &config.global, &config.instructions.pop_t1, &instr, FormatterTextKind::ExclamationMark)?;
fmt.format_punctuation(output, &config.global, &config.instructions.pop_t1, &instr, FormatterTextKind::Comma)?;
fmt.format_operand(output, &config.global, &config.instructions.pop_t1, &instr, 2)?;
return Ok(());
}
_ => todo!()
}
unreachable!()
}
}
/// Type that represents alias identifiers for [`PopT1`].
#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Debug, Hash)]
pub enum PopT1Aliases {
None,
}
/// Type that represents encoding identifiers for [`PopT1`].
#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Debug, Hash)]
pub enum PopT1Encodings {
Alt1,
Alt2,
}