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BytecodeFormatFlags.h
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BytecodeFormatFlags.h
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef vm_BytecodeFormatFlags_h
#define vm_BytecodeFormatFlags_h
/*
* [SMDOC] Bytecode Format flags (JOF_*)
*/
enum {
JOF_BYTE = 0, /* single bytecode, no immediates */
JOF_UINT8 = 1, /* unspecified uint8_t argument */
JOF_UINT16 = 2, /* unspecified uint16_t argument */
JOF_UINT24 = 3, /* unspecified uint24_t argument */
JOF_UINT32 = 4, /* unspecified uint32_t argument */
JOF_INT8 = 5, /* int8_t literal */
JOF_INT32 = 6, /* int32_t literal */
JOF_JUMP = 7, /* int32_t jump offset */
JOF_TABLESWITCH = 8, /* table switch */
JOF_ENVCOORD = 9, /* embedded ScopeCoordinate immediate */
JOF_ARGC = 10, /* uint16_t argument count */
JOF_QARG = 11, /* function argument index */
JOF_LOCAL = 12, /* var or block-local variable */
JOF_RESUMEINDEX = 13, /* yield, await, or gosub resume index */
JOF_ATOM = 14, /* uint32_t constant index */
JOF_OBJECT = 15, /* uint32_t object index */
JOF_REGEXP = 16, /* uint32_t regexp index */
JOF_DOUBLE = 17, /* inline DoubleValue */
JOF_SCOPE = 18, /* uint32_t scope index */
JOF_ICINDEX = 19, /* uint32_t IC index */
JOF_LOOPHEAD = 20, /* JSOp::LoopHead, combines JOF_ICINDEX and JOF_UINT8 */
JOF_BIGINT = 21, /* uint32_t index for BigInt value */
JOF_CLASS_CTOR = 22, /* uint32_t atom index, sourceStart, sourceEnd */
JOF_CODE_OFFSET = 23, /* int32_t bytecode offset */
JOF_TYPEMASK = 0x001f, /* mask for above immediate types */
JOF_NAME = 1 << 5, /* name operation */
JOF_PROP = 2 << 5, /* obj.prop operation */
JOF_ELEM = 3 << 5, /* obj[index] operation */
JOF_MODEMASK = 3 << 5, /* mask for above addressing modes */
JOF_PROPSET = 1 << 7, /* property/element/name set operation */
JOF_PROPINIT = 1 << 8, /* property/element/name init operation */
// (1 << 9) is unused.
JOF_CHECKSLOPPY = 1 << 10, /* op can only be generated in sloppy mode */
JOF_CHECKSTRICT = 1 << 11, /* op can only be generated in strict mode */
JOF_INVOKE = 1 << 12, /* any call, construct, or eval instruction */
JOF_CONSTRUCT = 1 << 13, /* invoke instruction using [[Construct]] entry */
JOF_SPREAD = 1 << 14, /* invoke instruction using spread argument */
JOF_GNAME = 1 << 15, /* predicted global name */
JOF_TYPESET = 1 << 16, /* has an entry in a script's type sets */
JOF_IC = 1 << 17, /* baseline may use an IC for this op */
};
#endif /* vm_BytecodeFormatFlags_h */