Module: Wardite::Evaluator

Extended by:
ValueHelper
Defined in:
lib/wardite.rb,
lib/wardite/alu_f32.generated.rb,
lib/wardite/alu_f64.generated.rb,
lib/wardite/alu_i32.generated.rb,
lib/wardite/alu_i64.generated.rb,
lib/wardite/convert.generated.rb

Class Method Summary collapse

Methods included from ValueHelper

F32, F64, I32, I64

Class Method Details

.convert_eval_insn(runtime, frame, code, operand) ⇒ Object 



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# File 'lib/wardite/convert.generated.rb', line 11

def self.convert_eval_insn(runtime, frame, code, operand)
  case code

  when :i32_wrap_i64
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I64)
    to = from.wrap(to: :i32)
    raise EvalError, "failed to convert type" if !to.is_a?(I32)
    runtime.stack.push(to)


  when :i32_trunc_f32_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F32)
    to = from.trunc_s(to: :i32)
    raise EvalError, "failed to convert type" if !to.is_a?(I32)
    runtime.stack.push(to)


  when :i32_trunc_f64_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F64)
    to = from.trunc_s(to: :i32)
    raise EvalError, "failed to convert type" if !to.is_a?(I32)
    runtime.stack.push(to)


  when :i32_trunc_f32_u
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F32)
    to = from.trunc_u(to: :i32)
    raise EvalError, "failed to convert type" if !to.is_a?(I32)
    runtime.stack.push(to)


  when :i32_trunc_f64_u
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F64)
    to = from.trunc_u(to: :i32)
    raise EvalError, "failed to convert type" if !to.is_a?(I32)
    runtime.stack.push(to)


  when :i32_reinterpret_f32
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F32)
    to = from.reinterpret(to: :i32)
    raise EvalError, "failed to convert type" if !to.is_a?(I32)
    runtime.stack.push(to)


  when :i32_extend8_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I32)
    to = from.extendN_s(to: :i32, from: :i8)
    raise EvalError, "failed to convert type" if !to.is_a?(I32)
    runtime.stack.push(to)


  when :i32_extend16_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I32)
    to = from.extendN_s(to: :i32, from: :i16)
    raise EvalError, "failed to convert type" if !to.is_a?(I32)
    runtime.stack.push(to)


  when :i32_trunc_sat_f32_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F32)
    to = from.trunc_sat_s(to: :i32)
    raise EvalError, "failed to convert type" if !to.is_a?(I32)
    runtime.stack.push(to)


  when :i32_trunc_sat_f64_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F64)
    to = from.trunc_sat_s(to: :i32)
    raise EvalError, "failed to convert type" if !to.is_a?(I32)
    runtime.stack.push(to)


  when :i32_trunc_sat_f32_u
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F32)
    to = from.trunc_sat_u(to: :i32)
    raise EvalError, "failed to convert type" if !to.is_a?(I32)
    runtime.stack.push(to)


  when :i32_trunc_sat_f64_u
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F64)
    to = from.trunc_sat_u(to: :i32)
    raise EvalError, "failed to convert type" if !to.is_a?(I32)
    runtime.stack.push(to)


  when :i64_extend_i32_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I32)
    to = from.extend_s(to: :i64)
    raise EvalError, "failed to convert type" if !to.is_a?(I64)
    runtime.stack.push(to)


  when :i64_extend_i64_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I64)
    to = from.extend_s(to: :i64)
    raise EvalError, "failed to convert type" if !to.is_a?(I64)
    runtime.stack.push(to)


  when :i64_extend_i32_u
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I32)
    to = from.extend_u(to: :i64)
    raise EvalError, "failed to convert type" if !to.is_a?(I64)
    runtime.stack.push(to)


  when :i64_extend_i64_u
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I64)
    to = from.extend_u(to: :i64)
    raise EvalError, "failed to convert type" if !to.is_a?(I64)
    runtime.stack.push(to)


  when :i64_trunc_f32_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F32)
    to = from.trunc_s(to: :i64)
    raise EvalError, "failed to convert type" if !to.is_a?(I64)
    runtime.stack.push(to)


  when :i64_trunc_f64_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F64)
    to = from.trunc_s(to: :i64)
    raise EvalError, "failed to convert type" if !to.is_a?(I64)
    runtime.stack.push(to)


  when :i64_trunc_f32_u
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F32)
    to = from.trunc_u(to: :i64)
    raise EvalError, "failed to convert type" if !to.is_a?(I64)
    runtime.stack.push(to)


  when :i64_trunc_f64_u
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F64)
    to = from.trunc_u(to: :i64)
    raise EvalError, "failed to convert type" if !to.is_a?(I64)
    runtime.stack.push(to)


  when :i64_reinterpret_f64
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F64)
    to = from.reinterpret(to: :i64)
    raise EvalError, "failed to convert type" if !to.is_a?(I64)
    runtime.stack.push(to)


  when :i64_extend8_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I32)
    to = from.extendN_s(to: :i64, from: :i8)
    raise EvalError, "failed to convert type" if !to.is_a?(I64)
    runtime.stack.push(to)


  when :i64_extend16_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I32)
    to = from.extendN_s(to: :i64, from: :i16)
    raise EvalError, "failed to convert type" if !to.is_a?(I64)
    runtime.stack.push(to)


  when :i64_extend32_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I32)
    to = from.extendN_s(to: :i64, from: :i32)
    raise EvalError, "failed to convert type" if !to.is_a?(I64)
    runtime.stack.push(to)


  when :i64_trunc_sat_f32_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F32)
    to = from.trunc_sat_s(to: :i64)
    raise EvalError, "failed to convert type" if !to.is_a?(I64)
    runtime.stack.push(to)


  when :i64_trunc_sat_f64_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F64)
    to = from.trunc_sat_s(to: :i64)
    raise EvalError, "failed to convert type" if !to.is_a?(I64)
    runtime.stack.push(to)


  when :i64_trunc_sat_f32_u
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F32)
    to = from.trunc_sat_u(to: :i64)
    raise EvalError, "failed to convert type" if !to.is_a?(I64)
    runtime.stack.push(to)


  when :i64_trunc_sat_f64_u
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F64)
    to = from.trunc_sat_u(to: :i64)
    raise EvalError, "failed to convert type" if !to.is_a?(I64)
    runtime.stack.push(to)


  when :f32_convert_i32_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I32)
    to = from.convert_s(to: :f32)
    raise EvalError, "failed to convert type" if !to.is_a?(F32)
    runtime.stack.push(to)


  when :f32_convert_i64_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I64)
    to = from.convert_s(to: :f32)
    raise EvalError, "failed to convert type" if !to.is_a?(F32)
    runtime.stack.push(to)


  when :f32_convert_i32_u
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I32)
    to = from.convert_u(to: :f32)
    raise EvalError, "failed to convert type" if !to.is_a?(F32)
    runtime.stack.push(to)


  when :f32_convert_i64_u
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I64)
    to = from.convert_u(to: :f32)
    raise EvalError, "failed to convert type" if !to.is_a?(F32)
    runtime.stack.push(to)


  when :f32_demote_f64
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F64)
    to = from.demote(to: :f32)
    raise EvalError, "failed to convert type" if !to.is_a?(F32)
    runtime.stack.push(to)


  when :f32_reinterpret_i32
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I32)
    to = from.reinterpret(to: :f32)
    raise EvalError, "failed to convert type" if !to.is_a?(F32)
    runtime.stack.push(to)


  when :f64_convert_i32_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I32)
    to = from.convert_s(to: :f64)
    raise EvalError, "failed to convert type" if !to.is_a?(F64)
    runtime.stack.push(to)


  when :f64_convert_i64_s
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I64)
    to = from.convert_s(to: :f64)
    raise EvalError, "failed to convert type" if !to.is_a?(F64)
    runtime.stack.push(to)


  when :f64_convert_i32_u
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I32)
    to = from.convert_u(to: :f64)
    raise EvalError, "failed to convert type" if !to.is_a?(F64)
    runtime.stack.push(to)


  when :f64_convert_i64_u
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I64)
    to = from.convert_u(to: :f64)
    raise EvalError, "failed to convert type" if !to.is_a?(F64)
    runtime.stack.push(to)


  when :f64_promote_f32
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(F32)
    to = from.promote(to: :f64)
    raise EvalError, "failed to convert type" if !to.is_a?(F64)
    runtime.stack.push(to)


  when :f64_reinterpret_i64
    from = runtime.stack.pop
    raise EvalError, "maybe empty or invalid stack" if !from.is_a?(I64)
    to = from.reinterpret(to: :f64)
    raise EvalError, "failed to convert type" if !to.is_a?(F64)
    runtime.stack.push(to)


  else
    return
  end
  return true
end

.f32_eval_insn(runtime, frame, code, operand) ⇒ Object 



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# File 'lib/wardite/alu_f32.generated.rb', line 11

def self.f32_eval_insn(runtime, frame, code, operand)
  case code

  when :f32_load
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    addr = runtime.stack.pop
    if !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + F32.new.memsize / 8
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    buf = memory.data[at...data_end]
    if !buf
      raise EvalError, "invalid memory range"
    end
    runtime.stack.push(F32.from_bytes(buf))


  when :f32_store
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    value = runtime.stack.pop
    addr = runtime.stack.pop
    if !value.is_a?(F32) || !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + value.packed.size
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    memory.data[at...data_end] = value.packed


  when :f32_const
    const = operand[0]
    if !const.is_a?(Float)
      raise EvalError, "invalid type of operand"
    end
    runtime.stack.push(F32(const))


  when :f32_eqz
    target = runtime.stack.pop
    if !target.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = target.value.zero? ? 1 : 0
    runtime.stack.push(I32(value))


  when :f32_eq
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F32) || !left.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value == right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :f32_ne
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F32) || !left.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value != right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :f32_lt
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F32) || !left.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value < right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :f32_gt
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F32) || !left.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value > right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :f32_le
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F32) || !left.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value <= right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :f32_ge
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F32) || !left.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value >= right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :f32_abs
    x = runtime.stack.pop
    if !x.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F32(x.value.abs))


  when :f32_neg
    x = runtime.stack.pop
    if !x.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F32(-(x.value)))


  when :f32_ceil
    x = runtime.stack.pop
    if !x.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F32(x.value.ceil.to_f))


  when :f32_floor
    x = runtime.stack.pop
    if !x.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F32(x.value.floor.to_f))


  when :f32_trunc
    x = runtime.stack.pop
    if !x.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F32(x.value.to_i.to_f))


  when :f32_nearest
    x = runtime.stack.pop
    if !x.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F32(x.value.round.to_f))


  when :f32_sqrt
    x = runtime.stack.pop
    if !x.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F32(x.value ** 0.5))


  when :f32_add
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F32) || !left.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F32(left.value + right.value))


  when :f32_sub
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F32) || !left.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F32(left.value - right.value))


  when :f32_mul
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F32) || !left.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F32(left.value * right.value))


  when :f32_div
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F32) || !left.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F32(left.value / right.value))


  when :f32_min
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F32) || !left.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    if right.value.nan? || left.value.nan?
      runtime.stack.push(F32(Float::NAN))
      return
    end
    runtime.stack.push(F32([left.value, right.value].min))


  when :f32_max
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F32) || !left.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    if right.value.nan? || left.value.nan?
      runtime.stack.push(F32(Float::NAN))
      return
    end
    runtime.stack.push(F32([left.value, right.value].max))


  when :f32_copysign
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F32) || !left.is_a?(F32)
      raise EvalError, "maybe empty or invalid stack"
    end
    if left.sign == right.sign
      runtime.stack.push(F32(left.value))
    else
      runtime.stack.push(F32(-left.value))
    end


  else
    return
  end
  return true
end

.f64_eval_insn(runtime, frame, code, operand) ⇒ Object 



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# File 'lib/wardite/alu_f64.generated.rb', line 11

def self.f64_eval_insn(runtime, frame, code, operand)
  case code

  when :f64_load
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    addr = runtime.stack.pop
    if !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + F64.new.memsize / 8
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    buf = memory.data[at...data_end]
    if !buf
      raise EvalError, "invalid memory range"
    end
    runtime.stack.push(F64.from_bytes(buf))


  when :f64_store
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    value = runtime.stack.pop
    addr = runtime.stack.pop
    if !value.is_a?(F64) || !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + value.packed.size
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    memory.data[at...data_end] = value.packed


  when :f64_const
    const = operand[0]
    if !const.is_a?(Float)
      raise EvalError, "invalid type of operand"
    end
    runtime.stack.push(F64(const))


  when :f64_eqz
    target = runtime.stack.pop
    if !target.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = target.value.zero? ? 1 : 0
    runtime.stack.push(I32(value))


  when :f64_eq
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F64) || !left.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value == right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :f64_ne
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F64) || !left.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value != right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :f64_lt
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F64) || !left.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value < right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :f64_gt
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F64) || !left.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value > right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :f64_le
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F64) || !left.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value <= right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :f64_ge
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F64) || !left.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value >= right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :f64_abs
    x = runtime.stack.pop
    if !x.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F64(x.value.abs))


  when :f64_neg
    x = runtime.stack.pop
    if !x.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F64(-(x.value)))


  when :f64_ceil
    x = runtime.stack.pop
    if !x.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F64(x.value.ceil.to_f))


  when :f64_floor
    x = runtime.stack.pop
    if !x.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F64(x.value.floor.to_f))


  when :f64_trunc
    x = runtime.stack.pop
    if !x.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F64(x.value.to_i.to_f))


  when :f64_nearest
    x = runtime.stack.pop
    if !x.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F64(x.value.round.to_f))


  when :f64_sqrt
    x = runtime.stack.pop
    if !x.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F64(x.value ** 0.5))


  when :f64_add
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F64) || !left.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F64(left.value + right.value))


  when :f64_sub
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F64) || !left.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F64(left.value - right.value))


  when :f64_mul
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F64) || !left.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F64(left.value * right.value))


  when :f64_div
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F64) || !left.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(F64(left.value / right.value))


  when :f64_min
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F64) || !left.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    if right.value.nan? || left.value.nan?
      runtime.stack.push(F64(Float::NAN))
      return
    end
    runtime.stack.push(F64([left.value, right.value].min))


  when :f64_max
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F64) || !left.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    if right.value.nan? || left.value.nan?
      runtime.stack.push(F64(Float::NAN))
      return
    end
    runtime.stack.push(F64([left.value, right.value].max))


  when :f64_copysign
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(F64) || !left.is_a?(F64)
      raise EvalError, "maybe empty or invalid stack"
    end
    if left.sign == right.sign
      runtime.stack.push(F64(left.value))
    else
      runtime.stack.push(F64(-left.value))
    end


  else
    return
  end
  return true
end

.i32_eval_insn(runtime, frame, code, operand) ⇒ Object 



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# File 'lib/wardite/alu_i32.generated.rb', line 11

def self.i32_eval_insn(runtime, frame, code, operand)
  case code

  when :i32_load
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    addr = runtime.stack.pop
    if !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + I32.new.memsize / 8
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    buf = memory.data[at...data_end]
    if !buf
      raise EvalError, "invalid memory range"
    end
    runtime.stack.push(I32.from_bytes(buf))


  when :i32_load8_s
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    addr = runtime.stack.pop
    if !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + 1
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    buf = memory.data[at...data_end]
    if !buf
      raise EvalError, "invalid memory range"
    end
    runtime.stack.push(I32.from_bytes(buf, size: 8, signed: true))


  when :i32_load8_u
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    addr = runtime.stack.pop
    if !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + 1
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    buf = memory.data[at...data_end]
    if !buf
      raise EvalError, "invalid memory range"
    end
    runtime.stack.push(I32.from_bytes(buf, size: 8, signed: false))


  when :i32_load16_s
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    addr = runtime.stack.pop
    if !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + 2
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    buf = memory.data[at...data_end]
    if !buf
      raise EvalError, "invalid memory range"
    end
    runtime.stack.push(I32.from_bytes(buf, size: 16, signed: true))


  when :i32_load16_u
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    addr = runtime.stack.pop
    if !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + 2
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    buf = memory.data[at...data_end]
    if !buf
      raise EvalError, "invalid memory range"
    end
    runtime.stack.push(I32.from_bytes(buf, size: 16, signed: false))


  when :i32_store
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    value = runtime.stack.pop
    addr = runtime.stack.pop
    if !value.is_a?(I32) || !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + value.packed.size
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    memory.data[at...data_end] = value.packed


  when :i32_store8
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    value = runtime.stack.pop
    addr = runtime.stack.pop
    if !value.is_a?(I32) || !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + 1
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    memory.data[at...data_end] = value.packed(size: 8)


  when :i32_store16
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    value = runtime.stack.pop
    addr = runtime.stack.pop
    if !value.is_a?(I32) || !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + 2
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    memory.data[at...data_end] = value.packed(size: 16)


  when :i32_const
    const = operand[0]
    if !const.is_a?(Integer)
      raise EvalError, "invalid type of operand"
    end
    runtime.stack.push(I32(const))


  when :i32_eqz
    target = runtime.stack.pop
    if !target.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = target.value.zero? ? 1 : 0
    runtime.stack.push(I32(value))


  when :i32_eq
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value == right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i32_ne
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value != right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i32_lts
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value_s < right.value_s) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i32_ltu
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value < right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i32_gts
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value_s > right.value_s) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i32_gtu
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value > right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i32_les
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value_s <= right.value_s) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i32_leu
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value <= right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i32_ges
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value_s >= right.value_s) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i32_geu
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value >= right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i32_clz
    target = runtime.stack.pop
    if !target.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    start = target.memsize - 1
    count = 0
    while start > -1
      if (target.value >> start).zero?
        count += 1
        start -= 1
      else
        break
      end
    end
    runtime.stack.push(I32(count))


  when :i32_ctz
    target = runtime.stack.pop
    if !target.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    finish = target.memsize
    count = 0
    while count < finish
      if (target.value & (1 << count)).zero?
        count += 1
      else
        break
      end
    end
    runtime.stack.push(I32(count))


  when :i32_popcnt
    target = runtime.stack.pop
    if !target.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    digits = target.memsize
    count = 0
    digits.times do |i|
      if (target.value & (1 << i)).nonzero?
        count += 1
      end
    end
    runtime.stack.push(I32(count))


  when :i32_add
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(I32(left.value + right.value))


  when :i32_sub
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(I32(left.value - right.value))


  when :i32_mul
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(I32(left.value * right.value))


  when :i32_div_s
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    result = left.value_s / right.value_s.to_f
    iresult = (result >= 0 ? result.floor : result.ceil).to_i
    if iresult >= (1 << (left.memsize - 1))
      raise IntegerOverflow, "integer overflow"
    end
  
    runtime.stack.push(I32(iresult))


  when :i32_div_u
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(I32(left.value / right.value))


  when :i32_rem_s
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    result = left.value_s % right.value_s
    if result > 0 && left.value_s < 0
      result = result - right.value_s
    elsif result < 0 && left.value_s > 0
      result = result - right.value_s
    end
    runtime.stack.push(I32(result))


  when :i32_rem_u
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(I32(left.value % right.value))


  when :i32_and
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(I32(left.value & right.value))


  when :i32_or
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(I32(left.value | right.value))


  when :i32_xor
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(I32(left.value ^ right.value))


  when :i32_shl
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = left.value << (right.value % right.memsize)
    value %= 1 << right.memsize
  
    runtime.stack.push(I32(value))


  when :i32_shr_s
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = left.value_s >> (right.value % right.memsize)
    runtime.stack.push(I32(value))


  when :i32_shr_u
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = left.value >> (right.value % right.memsize)
    runtime.stack.push(I32(value))


  when :i32_rotl
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    k = (right.value % right.memsize)
    rotated = left.value << k
    rest = left.value & (I32::I32_MAX << (right.memsize - k))
    value = rotated | (rest >> (right.memsize - k))
    runtime.stack.push(I32(value))


  when :i32_rotr
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I32) || !left.is_a?(I32)
      raise EvalError, "maybe empty or invalid stack"
    end
    k = (right.value % right.memsize)
    rotated = left.value >> k
    rest = left.value & (I32::I32_MAX >> (right.memsize - k))
    value = rotated | (rest << (right.memsize - k))
    runtime.stack.push(I32(value))


  else
    return
  end
  return true
end

.i64_eval_insn(runtime, frame, code, operand) ⇒ Object 



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# File 'lib/wardite/alu_i64.generated.rb', line 11

def self.i64_eval_insn(runtime, frame, code, operand)
  case code

  when :i64_load
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    addr = runtime.stack.pop
    if !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + I64.new.memsize / 8
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    buf = memory.data[at...data_end]
    if !buf
      raise EvalError, "invalid memory range"
    end
    runtime.stack.push(I64.from_bytes(buf))


  when :i64_load8_s
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    addr = runtime.stack.pop
    if !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + 1
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    buf = memory.data[at...data_end]
    if !buf
      raise EvalError, "invalid memory range"
    end
    runtime.stack.push(I64.from_bytes(buf, size: 8, signed: true))


  when :i64_load8_u
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    addr = runtime.stack.pop
    if !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + 1
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    buf = memory.data[at...data_end]
    if !buf
      raise EvalError, "invalid memory range"
    end
    runtime.stack.push(I64.from_bytes(buf, size: 8, signed: false))


  when :i64_load16_s
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    addr = runtime.stack.pop
    if !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + 2
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    buf = memory.data[at...data_end]
    if !buf
      raise EvalError, "invalid memory range"
    end
    runtime.stack.push(I64.from_bytes(buf, size: 16, signed: true))


  when :i64_load16_u
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    addr = runtime.stack.pop
    if !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + 2
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    buf = memory.data[at...data_end]
    if !buf
      raise EvalError, "invalid memory range"
    end
    runtime.stack.push(I64.from_bytes(buf, size: 16, signed: false))


  when :i64_load32_s
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    addr = runtime.stack.pop
    if !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + 4
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    buf = memory.data[at...data_end]
    if !buf
      raise EvalError, "invalid memory range"
    end
    runtime.stack.push(I64.from_bytes(buf, size: 32, signed: true))


  when :i64_load32_u
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    addr = runtime.stack.pop
    if !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + 4
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    buf = memory.data[at...data_end]
    if !buf
      raise EvalError, "invalid memory range"
    end
    runtime.stack.push(I64.from_bytes(buf, size: 32, signed: false))


  when :i64_store
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    value = runtime.stack.pop
    addr = runtime.stack.pop
    if !value.is_a?(I64) || !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + value.packed.size
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    memory.data[at...data_end] = value.packed


  when :i64_store8
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    value = runtime.stack.pop
    addr = runtime.stack.pop
    if !value.is_a?(I64) || !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + 1
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    memory.data[at...data_end] = value.packed(size: 8)


  when :i64_store16
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    value = runtime.stack.pop
    addr = runtime.stack.pop
    if !value.is_a?(I64) || !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + 2
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    memory.data[at...data_end] = value.packed(size: 16)


  when :i64_store32
    _align = operand[0] # TODO: alignment support?
    offset = operand[1]
    raise EvalError, "[BUG] invalid type of operand" if !offset.is_a?(Integer)
  
    value = runtime.stack.pop
    addr = runtime.stack.pop
    if !value.is_a?(I64) || !addr.is_a?(I32)
      raise EvalError, "maybe stack too short"
    end
  
    at = addr.value + offset
    data_end = at + 4
    memory = runtime.instance.store.memories[0] || raise("[BUG] no memory")
    memory.data[at...data_end] = value.packed(size: 32)


  when :i64_const
    const = operand[0]
    if !const.is_a?(Integer)
      raise EvalError, "invalid type of operand"
    end
    runtime.stack.push(I64(const))


  when :i64_eqz
    target = runtime.stack.pop
    if !target.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = target.value.zero? ? 1 : 0
    runtime.stack.push(I32(value))


  when :i64_eq
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value == right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i64_ne
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value != right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i64_lts
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value_s < right.value_s) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i64_ltu
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value < right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i64_gts
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value_s > right.value_s) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i64_gtu
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value > right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i64_les
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value_s <= right.value_s) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i64_leu
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value <= right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i64_ges
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value_s >= right.value_s) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i64_geu
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = (left.value >= right.value) ? 1 : 0
    runtime.stack.push(I32(value))


  when :i64_clz
    target = runtime.stack.pop
    if !target.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    start = target.memsize - 1
    count = 0
    while start > -1
      if (target.value >> start).zero?
        count += 1
        start -= 1
      else
        break
      end
    end
    runtime.stack.push(I64(count))


  when :i64_ctz
    target = runtime.stack.pop
    if !target.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    finish = target.memsize
    count = 0
    while count < finish
      if (target.value & (1 << count)).zero?
        count += 1
      else
        break
      end
    end
    runtime.stack.push(I64(count))


  when :i64_popcnt
    target = runtime.stack.pop
    if !target.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    digits = target.memsize
    count = 0
    digits.times do |i|
      if (target.value & (1 << i)).nonzero?
        count += 1
      end
    end
    runtime.stack.push(I64(count))


  when :i64_add
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(I64(left.value + right.value))


  when :i64_sub
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(I64(left.value - right.value))


  when :i64_mul
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(I64(left.value * right.value))


  when :i64_div_s
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    result = left.value_s / right.value_s.to_f
    iresult = (result >= 0 ? result.floor : result.ceil).to_i
    if iresult >= (1 << (left.memsize - 1))
      raise IntegerOverflow, "integer overflow"
    end
  
    runtime.stack.push(I64(iresult))


  when :i64_div_u
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(I64(left.value / right.value))


  when :i64_rem_s
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    result = left.value_s % right.value_s
    if result > 0 && left.value_s < 0
      result = result - right.value_s
    elsif result < 0 && left.value_s > 0
      result = result - right.value_s
    end
    runtime.stack.push(I64(result))


  when :i64_rem_u
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(I64(left.value % right.value))


  when :i64_and
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(I64(left.value & right.value))


  when :i64_or
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(I64(left.value | right.value))


  when :i64_xor
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    runtime.stack.push(I64(left.value ^ right.value))


  when :i64_shl
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = left.value << (right.value % right.memsize)
    value %= 1 << right.memsize
  
    runtime.stack.push(I64(value))


  when :i64_shr_s
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = left.value_s >> (right.value % right.memsize)
    runtime.stack.push(I64(value))


  when :i64_shr_u
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    value = left.value >> (right.value % right.memsize)
    runtime.stack.push(I64(value))


  when :i64_rotl
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    k = (right.value % right.memsize)
    rotated = left.value << k
    rest = left.value & (I64::I64_MAX << (right.memsize - k))
    value = rotated | (rest >> (right.memsize - k))
    runtime.stack.push(I64(value))


  when :i64_rotr
    right, left = runtime.stack.pop, runtime.stack.pop
    if !right.is_a?(I64) || !left.is_a?(I64)
      raise EvalError, "maybe empty or invalid stack"
    end
    k = (right.value % right.memsize)
    rotated = left.value >> k
    rest = left.value & (I64::I64_MAX >> (right.memsize - k))
    value = rotated | (rest << (right.memsize - k))
    runtime.stack.push(I64(value))


  else
    return
  end
  return true
end