1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
/* -*- 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 or await resume index */
JOF_DOUBLE = 14, /* inline DoubleValue */
JOF_GCTHING = 15, /* uint32_t generic gc-thing index */
JOF_ATOM = 16, /* uint32_t constant index */
JOF_OBJECT = 17, /* uint32_t object index */
JOF_REGEXP = 18, /* uint32_t regexp index */
JOF_SCOPE = 19, /* uint32_t scope index */
JOF_BIGINT = 20, /* uint32_t index for BigInt value */
JOF_ICINDEX = 21, /* uint32_t IC index */
JOF_LOOPHEAD = 22, /* JSOp::LoopHead, combines JOF_ICINDEX and JOF_UINT8 */
JOF_TWO_UINT8 = 23, /* A pair of unspecified uint8_t arguments */
JOF_DEBUGCOORD = 24, /* An embedded ScopeCoordinate immediate that may
traverse DebugEnvironmentProxies*/
JOF_SHAPE = 25, /* uint32_t shape index */
JOF_STRING = 26, /* uint32_t constant index */
JOF_TYPEMASK = 0xFF, /* mask for above immediate types */
/* Bits 0xFF00 are available for future usage */
JOF_PROPSET = 1 << 16, /* property/element/name set operation */
JOF_PROPINIT = 1 << 17, /* property/element/name init operation */
JOF_CHECKSLOPPY = 1 << 18, /* op can only be generated in sloppy mode */
JOF_CHECKSTRICT = 1 << 19, /* op can only be generated in strict mode */
JOF_INVOKE = 1 << 20, /* any call, construct, or eval instruction */
JOF_CONSTRUCT = 1 << 21, /* invoke instruction using [[Construct]] entry */
JOF_SPREAD = 1 << 22, /* invoke instruction using spread argument */
JOF_GNAME = 1 << 23, /* predicted global name */
JOF_IC = 1 << 24, /* baseline may use an IC for this op */
JOF_USES_ENV = 1 << 25, /* op uses the frame's environment chain */
};
#endif /* vm_BytecodeFormatFlags_h */
|
