// Copyright 2019 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

type DependentCode extends WeakFixedArray;

bitfield struct OSRUrgencyAndInstallTarget extends uint16 {
  // The layout is chosen s.t. urgency and the install target offset can be
  // loaded with a single 16-bit load (i.e. no masking required).
  osr_urgency: uint32: 3 bit;
  // The 13 LSB of the install target bytecode offset.
  osr_install_target: uint32: 13 bit;
}

extern class BytecodeArray extends FixedArrayBase {
  // TODO(v8:8983): bytecode array object sizes vary based on their contents.
  constant_pool: FixedArray;
  // The handler table contains offsets of exception handlers.
  handler_table: ByteArray;
  // Source position table. Can contain:
  // * undefined (initial value)
  // * empty_byte_array (for bytecode generated for functions that will never
  // have source positions, e.g. native functions).
  // * ByteArray (when source positions have been collected for the bytecode)
  // * exception (when an error occurred while explicitly collecting source
  // positions for pre-existing bytecode).
  @cppAcquireLoad
  @cppReleaseStore
  source_position_table: Undefined|ByteArray|Exception;
  frame_size: int32;
  parameter_size: int32;
  incoming_new_target_or_generator_register: int32;
  osr_urgency_and_install_target: OSRUrgencyAndInstallTarget;
  bytecode_age: uint16;  // Only 3 bits used.
}

extern class CodeDataContainer extends HeapObject;