/[jscoverage]/trunk/js/jsopcode.tbl
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Annotation of /trunk/js/jsopcode.tbl

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Tue Dec 9 03:37:47 2008 UTC (11 years ago) by siliconforks
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1 siliconforks 332 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2     * vim: set ts=8 sw=4 et tw=0 ft=C:
3     *
4     * ***** BEGIN LICENSE BLOCK *****
5     * Version: MPL 1.1/GPL 2.0/LGPL 2.1
6     *
7     * The contents of this file are subject to the Mozilla Public License Version
8     * 1.1 (the "License"); you may not use this file except in compliance with
9     * the License. You may obtain a copy of the License at
10     * http://www.mozilla.org/MPL/
11     *
12     * Software distributed under the License is distributed on an "AS IS" basis,
13     * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
14     * for the specific language governing rights and limitations under the
15     * License.
16     *
17     * The Original Code is Mozilla Communicator client code, released
18     * March 31, 1998.
19     *
20     * The Initial Developer of the Original Code is
21     * Netscape Communications Corporation.
22     * Portions created by the Initial Developer are Copyright (C) 1998
23     * the Initial Developer. All Rights Reserved.
24     *
25     * Contributor(s):
26     *
27     * Alternatively, the contents of this file may be used under the terms of
28     * either of the GNU General Public License Version 2 or later (the "GPL"),
29     * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
30     * in which case the provisions of the GPL or the LGPL are applicable instead
31     * of those above. If you wish to allow use of your version of this file only
32     * under the terms of either the GPL or the LGPL, and not to allow others to
33     * use your version of this file under the terms of the MPL, indicate your
34     * decision by deleting the provisions above and replace them with the notice
35     * and other provisions required by the GPL or the LGPL. If you do not delete
36     * the provisions above, a recipient may use your version of this file under
37     * the terms of any one of the MPL, the GPL or the LGPL.
38     *
39     * ***** END LICENSE BLOCK ***** */
40    
41     /*
42     * JavaScript operation bytecodes. If you need to allocate a bytecode, look
43     * for a name of the form JSOP_UNUSED* and claim it. Otherwise, always add at
44     * the end of the table.
45     *
46     * Includers must define an OPDEF macro of the following form:
47     *
48     * #define OPDEF(op,val,name,image,length,nuses,ndefs,prec,format) ...
49     *
50     * Selected arguments can be expanded in initializers. The op argument is
51     * expanded followed by comma in the JSOp enum (jsopcode.h), e.g. The value
52     * field must be dense for now, because jsopcode.c uses an OPDEF() expansion
53     * inside the js_CodeSpec[] initializer.
54     *
55     * Field Description
56     * op Bytecode name, which is the JSOp enumerator name
57     * value Bytecode value, which is the JSOp enumerator value
58     * name C string containing name for disassembler
59     * image C string containing "image" for pretty-printer, null if ugly
60     * length Number of bytes including any immediate operands
61     * nuses Number of stack slots consumed by bytecode, -1 if variadic
62     * ndefs Number of stack slots produced by bytecode, -1 if variadic
63     * prec Operator precedence, zero if not an operator
64     * format Bytecode plus immediate operand encoding format
65     *
66     * Precedence Operators Opcodes
67 siliconforks 399 * 1 yield w JSOP_YIELD
68 siliconforks 332 * 2 , JSOP_POP with SRC_PCDELTA, JSOP_RETURN
69 siliconforks 399 * 3 =, +=, etc. JSOP_SETNAME, etc. (all JOF_SET);
70     * let (...) ... and JSOP_LEAVEBLOCKEXPR
71 siliconforks 332 * 4 ?: JSOP_IFEQ, JSOP_IFEQX
72     * 5 || JSOP_OR, JSOP_ORX
73     * 6 && JSOP_AND, JSOP_ANDX
74     * 7 | JSOP_BITOR
75     * 8 ^ JSOP_BITXOR
76     * 9 & JSOP_BITAND
77     * 10 ==, !=, etc. JSOP_EQ, JSOP_NE, etc.
78     * 11 <, in, etc. JSOP_LT, JSOP_IN, etc.
79     * 12 <<, >>, >>> JSOP_LSH, JSOP_RSH, JSOP_URSH
80     * 13 +, -, etc. JSOP_ADD, JSOP_SUB, etc.
81     * 14 *, /, % JSOP_MUL, JSOP_DIV, JSOP_MOD
82 siliconforks 399 * 15 !, ~, delete, etc. JSOP_NOT, JSOP_BITNOT, JSOP_DEL*, etc.
83 siliconforks 332 * 16 3.14, 0, etc. JSOP_DOUBLE, JSOP_ZERO, etc.
84 siliconforks 399 * 17 new JSOP_NEW
85 siliconforks 332 * 18 x.y, f(), etc. JSOP_GETPROP, JSOP_CALL, etc.
86 siliconforks 399 * 19 x, null, JSOP_NAME, JSOP_NULL, etc.;
87     * function (...) ... and JSOP_ANONFUNOBJ, JSOP_NAMEDFUNOBJ
88 siliconforks 332 *
89     * The push-numeric-constant operators, JSOP_ZERO, JSOP_DOUBLE, etc., have
90     * lower precedence than the member operators emitted for the . operator, to
91     * cause the decompiler to parenthesize the . left operand, e.g. (0).foo.
92 siliconforks 399 * Otherwise the . could be taken as a decimal point.
93 siliconforks 332 *
94 siliconforks 399 * Let expressions are "primary" when viewed from the left, but they eat up ops
95     * to the right as if assignment expressions and therefore have precedence 3.
96     * This makes the decompiler retain the parentheses in (let (a=0) x) ? a : 0
97     * but omit the superfluous ones in (let (a=0) x), a.
98     *
99     * Yield expressions must be parenthesized even in comma-expressions and
100     * argument lists, so they have the lowest precedence.
101     *
102 siliconforks 332 * This file is best viewed with 128 columns:
103     12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
104     */
105    
106     /* legend: op val name image len use def prec format */
107    
108     /* Longstanding JavaScript bytecodes. */
109     OPDEF(JSOP_INTERRUPT, 0, "interrupt", NULL, 1, 0, 0, 0, JOF_BYTE)
110     OPDEF(JSOP_PUSH, 1, "push", NULL, 1, 0, 1, 0, JOF_BYTE)
111     OPDEF(JSOP_POPV, 2, "popv", NULL, 1, 1, 0, 2, JOF_BYTE)
112     OPDEF(JSOP_ENTERWITH, 3, "enterwith", NULL, 1, 1, 1, 0, JOF_BYTE|JOF_PARENHEAD)
113     OPDEF(JSOP_LEAVEWITH, 4, "leavewith", NULL, 1, 1, 0, 0, JOF_BYTE)
114     OPDEF(JSOP_RETURN, 5, "return", NULL, 1, 1, 0, 2, JOF_BYTE)
115     OPDEF(JSOP_GOTO, 6, "goto", NULL, 3, 0, 0, 0, JOF_JUMP)
116     OPDEF(JSOP_IFEQ, 7, "ifeq", NULL, 3, 1, 0, 4, JOF_JUMP|JOF_DETECTING)
117     OPDEF(JSOP_IFNE, 8, "ifne", NULL, 3, 1, 0, 0, JOF_JUMP|JOF_PARENHEAD)
118    
119     /* Get the arguments object for the current, lightweight function activation. */
120     OPDEF(JSOP_ARGUMENTS, 9, js_arguments_str, js_arguments_str, 1, 0, 1, 18, JOF_BYTE)
121    
122     /* ECMA-compliant for-in loop with argument or local loop control. */
123 siliconforks 399 OPDEF(JSOP_FORARG, 10, "forarg", NULL, 3, 2, 2, 19, JOF_QARG|JOF_NAME|JOF_FOR)
124     OPDEF(JSOP_FORLOCAL, 11, "forlocal", NULL, 3, 2, 2, 19, JOF_LOCAL|JOF_NAME|JOF_FOR)
125 siliconforks 332
126     /* More longstanding bytecodes. */
127     OPDEF(JSOP_DUP, 12, "dup", NULL, 1, 1, 2, 0, JOF_BYTE)
128     OPDEF(JSOP_DUP2, 13, "dup2", NULL, 1, 2, 4, 0, JOF_BYTE)
129     OPDEF(JSOP_SETCONST, 14, "setconst", NULL, 3, 1, 1, 3, JOF_ATOM|JOF_NAME|JOF_SET)
130 siliconforks 399 OPDEF(JSOP_BITOR, 15, "bitor", "|", 1, 2, 1, 7, JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
131     OPDEF(JSOP_BITXOR, 16, "bitxor", "^", 1, 2, 1, 8, JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
132     OPDEF(JSOP_BITAND, 17, "bitand", "&", 1, 2, 1, 9, JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
133 siliconforks 332 OPDEF(JSOP_EQ, 18, "eq", "==", 1, 2, 1, 10, JOF_BYTE|JOF_LEFTASSOC|JOF_DETECTING)
134     OPDEF(JSOP_NE, 19, "ne", "!=", 1, 2, 1, 10, JOF_BYTE|JOF_LEFTASSOC|JOF_DETECTING)
135 siliconforks 399 OPDEF(JSOP_LT, 20, "lt", "<", 1, 2, 1, 11, JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
136     OPDEF(JSOP_LE, 21, "le", "<=", 1, 2, 1, 11, JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
137     OPDEF(JSOP_GT, 22, "gt", ">", 1, 2, 1, 11, JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
138     OPDEF(JSOP_GE, 23, "ge", ">=", 1, 2, 1, 11, JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
139     OPDEF(JSOP_LSH, 24, "lsh", "<<", 1, 2, 1, 12, JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
140     OPDEF(JSOP_RSH, 25, "rsh", ">>", 1, 2, 1, 12, JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
141     OPDEF(JSOP_URSH, 26, "ursh", ">>>", 1, 2, 1, 12, JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
142     OPDEF(JSOP_ADD, 27, "add", "+", 1, 2, 1, 13, JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
143     OPDEF(JSOP_SUB, 28, "sub", "-", 1, 2, 1, 13, JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
144     OPDEF(JSOP_MUL, 29, "mul", "*", 1, 2, 1, 14, JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
145     OPDEF(JSOP_DIV, 30, "div", "/", 1, 2, 1, 14, JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
146     OPDEF(JSOP_MOD, 31, "mod", "%", 1, 2, 1, 14, JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
147 siliconforks 332 OPDEF(JSOP_NOT, 32, "not", "!", 1, 1, 1, 15, JOF_BYTE|JOF_DETECTING)
148     OPDEF(JSOP_BITNOT, 33, "bitnot", "~", 1, 1, 1, 15, JOF_BYTE)
149     OPDEF(JSOP_NEG, 34, "neg", "- ", 1, 1, 1, 15, JOF_BYTE)
150     OPDEF(JSOP_NEW, 35, js_new_str, NULL, 3, -1, 1, 17, JOF_UINT16|JOF_INVOKE)
151 siliconforks 399 OPDEF(JSOP_DELNAME, 36, "delname", NULL, 3, 0, 1, 15, JOF_ATOM|JOF_NAME|JOF_DEL)
152     OPDEF(JSOP_DELPROP, 37, "delprop", NULL, 3, 1, 1, 15, JOF_ATOM|JOF_PROP|JOF_DEL)
153     OPDEF(JSOP_DELELEM, 38, "delelem", NULL, 1, 2, 1, 15, JOF_BYTE |JOF_ELEM|JOF_DEL)
154 siliconforks 332 OPDEF(JSOP_TYPEOF, 39, js_typeof_str,NULL, 1, 1, 1, 15, JOF_BYTE|JOF_DETECTING)
155     OPDEF(JSOP_VOID, 40, js_void_str, NULL, 1, 1, 1, 15, JOF_BYTE)
156    
157     OPDEF(JSOP_INCNAME, 41, "incname", NULL, 3, 0, 1, 15, JOF_ATOM|JOF_NAME|JOF_INC|JOF_TMPSLOT2)
158     OPDEF(JSOP_INCPROP, 42, "incprop", NULL, 3, 1, 1, 15, JOF_ATOM|JOF_PROP|JOF_INC|JOF_TMPSLOT2)
159     OPDEF(JSOP_INCELEM, 43, "incelem", NULL, 1, 2, 1, 15, JOF_BYTE |JOF_ELEM|JOF_INC|JOF_TMPSLOT2)
160     OPDEF(JSOP_DECNAME, 44, "decname", NULL, 3, 0, 1, 15, JOF_ATOM|JOF_NAME|JOF_DEC|JOF_TMPSLOT2)
161     OPDEF(JSOP_DECPROP, 45, "decprop", NULL, 3, 1, 1, 15, JOF_ATOM|JOF_PROP|JOF_DEC|JOF_TMPSLOT2)
162     OPDEF(JSOP_DECELEM, 46, "decelem", NULL, 1, 2, 1, 15, JOF_BYTE |JOF_ELEM|JOF_DEC|JOF_TMPSLOT2)
163     OPDEF(JSOP_NAMEINC, 47, "nameinc", NULL, 3, 0, 1, 15, JOF_ATOM|JOF_NAME|JOF_INC|JOF_POST|JOF_TMPSLOT2)
164     OPDEF(JSOP_PROPINC, 48, "propinc", NULL, 3, 1, 1, 15, JOF_ATOM|JOF_PROP|JOF_INC|JOF_POST|JOF_TMPSLOT2)
165     OPDEF(JSOP_ELEMINC, 49, "eleminc", NULL, 1, 2, 1, 15, JOF_BYTE |JOF_ELEM|JOF_INC|JOF_POST|JOF_TMPSLOT2)
166     OPDEF(JSOP_NAMEDEC, 50, "namedec", NULL, 3, 0, 1, 15, JOF_ATOM|JOF_NAME|JOF_DEC|JOF_POST|JOF_TMPSLOT2)
167     OPDEF(JSOP_PROPDEC, 51, "propdec", NULL, 3, 1, 1, 15, JOF_ATOM|JOF_PROP|JOF_DEC|JOF_POST|JOF_TMPSLOT2)
168     OPDEF(JSOP_ELEMDEC, 52, "elemdec", NULL, 1, 2, 1, 15, JOF_BYTE |JOF_ELEM|JOF_DEC|JOF_POST|JOF_TMPSLOT2)
169    
170     OPDEF(JSOP_GETPROP, 53, "getprop", NULL, 3, 1, 1, 18, JOF_ATOM|JOF_PROP)
171     OPDEF(JSOP_SETPROP, 54, "setprop", NULL, 3, 2, 1, 3, JOF_ATOM|JOF_PROP|JOF_SET|JOF_DETECTING)
172     OPDEF(JSOP_GETELEM, 55, "getelem", NULL, 1, 2, 1, 18, JOF_BYTE |JOF_ELEM|JOF_LEFTASSOC)
173     OPDEF(JSOP_SETELEM, 56, "setelem", NULL, 1, 3, 1, 3, JOF_BYTE |JOF_ELEM|JOF_SET|JOF_DETECTING)
174     OPDEF(JSOP_CALLNAME, 57, "callname", NULL, 3, 0, 2, 19, JOF_ATOM|JOF_NAME|JOF_CALLOP)
175     OPDEF(JSOP_CALL, 58, "call", NULL, 3, -1, 1, 18, JOF_UINT16|JOF_INVOKE)
176     OPDEF(JSOP_NAME, 59, "name", NULL, 3, 0, 1, 19, JOF_ATOM|JOF_NAME)
177     OPDEF(JSOP_DOUBLE, 60, "double", NULL, 3, 0, 1, 16, JOF_ATOM)
178     OPDEF(JSOP_STRING, 61, "string", NULL, 3, 0, 1, 19, JOF_ATOM)
179     OPDEF(JSOP_ZERO, 62, "zero", "0", 1, 0, 1, 16, JOF_BYTE)
180     OPDEF(JSOP_ONE, 63, "one", "1", 1, 0, 1, 16, JOF_BYTE)
181     OPDEF(JSOP_NULL, 64, js_null_str, js_null_str, 1, 0, 1, 19, JOF_BYTE)
182     OPDEF(JSOP_THIS, 65, js_this_str, js_this_str, 1, 0, 1, 19, JOF_BYTE)
183     OPDEF(JSOP_FALSE, 66, js_false_str, js_false_str, 1, 0, 1, 19, JOF_BYTE)
184     OPDEF(JSOP_TRUE, 67, js_true_str, js_true_str, 1, 0, 1, 19, JOF_BYTE)
185     OPDEF(JSOP_OR, 68, "or", NULL, 3, 1, 0, 5, JOF_JUMP|JOF_DETECTING|JOF_LEFTASSOC)
186     OPDEF(JSOP_AND, 69, "and", NULL, 3, 1, 0, 6, JOF_JUMP|JOF_DETECTING|JOF_LEFTASSOC)
187    
188     /* The switch bytecodes have variable length. */
189     OPDEF(JSOP_TABLESWITCH, 70, "tableswitch", NULL, -1, 1, 0, 0, JOF_TABLESWITCH|JOF_DETECTING|JOF_PARENHEAD)
190     OPDEF(JSOP_LOOKUPSWITCH, 71, "lookupswitch", NULL, -1, 1, 0, 0, JOF_LOOKUPSWITCH|JOF_DETECTING|JOF_PARENHEAD)
191    
192     /* New, infallible/transitive identity ops. */
193 siliconforks 399 OPDEF(JSOP_STRICTEQ, 72, "stricteq", "===", 1, 2, 1, 10, JOF_BYTE|JOF_DETECTING|JOF_LEFTASSOC)
194     OPDEF(JSOP_STRICTNE, 73, "strictne", "!==", 1, 2, 1, 10, JOF_BYTE|JOF_DETECTING|JOF_LEFTASSOC)
195 siliconforks 332
196     /* Variant of JSOP_NULL for default (global) |this| parameter pushing. */
197 siliconforks 399 OPDEF(JSOP_NULLTHIS, 74, js_null_str, js_null_str, 1, 0, 1, 19, JOF_BYTE)
198 siliconforks 332
199 siliconforks 399 /*
200     * JSOP_ITER sets up a for-in or for-each-in loop using the JSITER_* flag bits
201     * in this op's uint8 immediate operand. It replaces the top of stack object
202     * with an iterator for that object, and pushes a slot used by JSOP_NEXTITER.
203     *
204     * JSOP_NEXTITER stores the next iterated value in the top of stack slot which
205     * was allocated by JSOP_ITER and pushes true, or stores JSVAL_HOLE and pushes
206     * false. It is followed immediately by JSOP_IFNE{,X}.
207     *
208     * JSOP_ENDITER cleans up after the loop. It uses the slot above the iterator
209     * for temporary GC rooting.
210     */
211     OPDEF(JSOP_ITER, 75, "iter", NULL, 2, 1, 2, 0, JOF_UINT8)
212     OPDEF(JSOP_NEXTITER, 76, "nextiter", NULL, 1, 2, 3, 0, JOF_BYTE)
213     OPDEF(JSOP_ENDITER, 77, "enditer", NULL, 1, 2, 0, 0, JOF_BYTE)
214 siliconforks 332
215 siliconforks 399 OPDEF(JSOP_APPLY, 78, "apply", NULL, 3, -1, 1, 18, JOF_UINT16|JOF_INVOKE)
216     OPDEF(JSOP_SWAP, 79, "swap", NULL, 1, 2, 2, 0, JOF_BYTE)
217    
218 siliconforks 332 /* Push object literal. */
219     OPDEF(JSOP_OBJECT, 80, "object", NULL, 3, 0, 1, 19, JOF_OBJECT)
220    
221     /* Pop value and discard it. */
222     OPDEF(JSOP_POP, 81, "pop", NULL, 1, 1, 0, 2, JOF_BYTE)
223    
224     /* Convert value to number, for unary +. */
225     OPDEF(JSOP_POS, 82, "pos", "+ ", 1, 1, 1, 15, JOF_BYTE)
226    
227     /* Trap into debugger for breakpoint, etc. */
228     OPDEF(JSOP_TRAP, 83, "trap", NULL, 1, 0, 0, 0, JOF_BYTE)
229    
230     /* Fast get/set ops for function arguments and local variables. */
231     OPDEF(JSOP_GETARG, 84, "getarg", NULL, 3, 0, 1, 19, JOF_QARG |JOF_NAME)
232     OPDEF(JSOP_SETARG, 85, "setarg", NULL, 3, 1, 1, 3, JOF_QARG |JOF_NAME|JOF_SET)
233     OPDEF(JSOP_GETLOCAL, 86,"getlocal", NULL, 3, 0, 1, 19, JOF_LOCAL|JOF_NAME)
234     OPDEF(JSOP_SETLOCAL, 87,"setlocal", NULL, 3, 1, 1, 3, JOF_LOCAL|JOF_NAME|JOF_SET|JOF_DETECTING)
235    
236     /* Push unsigned 16-bit int constant. */
237     OPDEF(JSOP_UINT16, 88, "uint16", NULL, 3, 0, 1, 16, JOF_UINT16)
238    
239     /* Object and array literal support. */
240     OPDEF(JSOP_NEWINIT, 89, "newinit", NULL, 2, 0, 1, 19, JOF_INT8)
241     OPDEF(JSOP_ENDINIT, 90, "endinit", NULL, 1, 0, 0, 19, JOF_BYTE)
242     OPDEF(JSOP_INITPROP, 91, "initprop", NULL, 3, 1, 0, 3, JOF_ATOM|JOF_PROP|JOF_SET|JOF_DETECTING)
243     OPDEF(JSOP_INITELEM, 92, "initelem", NULL, 1, 2, 0, 3, JOF_BYTE |JOF_ELEM|JOF_SET|JOF_DETECTING)
244     OPDEF(JSOP_DEFSHARP, 93, "defsharp", NULL, 3, 0, 0, 0, JOF_UINT16)
245     OPDEF(JSOP_USESHARP, 94, "usesharp", NULL, 3, 0, 1, 0, JOF_UINT16)
246    
247     /* Fast inc/dec ops for args and locals. */
248     OPDEF(JSOP_INCARG, 95, "incarg", NULL, 3, 0, 1, 15, JOF_QARG |JOF_NAME|JOF_INC)
249     OPDEF(JSOP_DECARG, 96, "decarg", NULL, 3, 0, 1, 15, JOF_QARG |JOF_NAME|JOF_DEC)
250     OPDEF(JSOP_ARGINC, 97, "arginc", NULL, 3, 0, 1, 15, JOF_QARG |JOF_NAME|JOF_INC|JOF_POST)
251     OPDEF(JSOP_ARGDEC, 98, "argdec", NULL, 3, 0, 1, 15, JOF_QARG |JOF_NAME|JOF_DEC|JOF_POST)
252    
253     OPDEF(JSOP_INCLOCAL, 99, "inclocal", NULL, 3, 0, 1, 15, JOF_LOCAL|JOF_NAME|JOF_INC)
254     OPDEF(JSOP_DECLOCAL, 100,"declocal", NULL, 3, 0, 1, 15, JOF_LOCAL|JOF_NAME|JOF_DEC)
255     OPDEF(JSOP_LOCALINC, 101,"localinc", NULL, 3, 0, 1, 15, JOF_LOCAL|JOF_NAME|JOF_INC|JOF_POST)
256     OPDEF(JSOP_LOCALDEC, 102,"localdec", NULL, 3, 0, 1, 15, JOF_LOCAL|JOF_NAME|JOF_DEC|JOF_POST)
257    
258 siliconforks 399 OPDEF(JSOP_IMACOP, 103,"imacop", NULL, 1, 0, 0, 0, JOF_BYTE)
259 siliconforks 332
260     /* ECMA-compliant for/in ops. */
261 siliconforks 399 OPDEF(JSOP_FORNAME, 104,"forname", NULL, 3, 2, 2, 19, JOF_ATOM|JOF_NAME|JOF_FOR)
262     OPDEF(JSOP_FORPROP, 105,"forprop", NULL, 3, 3, 2, 18, JOF_ATOM|JOF_PROP|JOF_FOR)
263     OPDEF(JSOP_FORELEM, 106,"forelem", NULL, 1, 2, 3, 18, JOF_BYTE |JOF_ELEM|JOF_FOR)
264 siliconforks 332 OPDEF(JSOP_POPN, 107,"popn", NULL, 3, -1, 0, 0, JOF_UINT16)
265    
266     /* ECMA-compliant assignment ops. */
267     OPDEF(JSOP_BINDNAME, 108,"bindname", NULL, 3, 0, 1, 0, JOF_ATOM|JOF_NAME|JOF_SET)
268     OPDEF(JSOP_SETNAME, 109,"setname", NULL, 3, 2, 1, 3, JOF_ATOM|JOF_NAME|JOF_SET|JOF_DETECTING)
269    
270     /* Exception handling ops. */
271     OPDEF(JSOP_THROW, 110,js_throw_str, NULL, 1, 1, 0, 0, JOF_BYTE)
272    
273     /* 'in' and 'instanceof' ops. */
274     OPDEF(JSOP_IN, 111,js_in_str, js_in_str, 1, 2, 1, 11, JOF_BYTE|JOF_LEFTASSOC)
275     OPDEF(JSOP_INSTANCEOF,112,js_instanceof_str,js_instanceof_str,1,2,1,11,JOF_BYTE|JOF_LEFTASSOC)
276    
277     /* debugger op */
278     OPDEF(JSOP_DEBUGGER, 113,"debugger", NULL, 1, 0, 0, 0, JOF_BYTE)
279    
280     /* gosub/retsub for finally handling */
281     OPDEF(JSOP_GOSUB, 114,"gosub", NULL, 3, 0, 0, 0, JOF_JUMP)
282     OPDEF(JSOP_RETSUB, 115,"retsub", NULL, 1, 2, 0, 0, JOF_BYTE)
283    
284     /* More exception handling ops. */
285     OPDEF(JSOP_EXCEPTION, 116,"exception", NULL, 1, 0, 1, 0, JOF_BYTE)
286    
287     /* Embedded lineno to speedup pc->line mapping. */
288     OPDEF(JSOP_LINENO, 117,"lineno", NULL, 3, 0, 0, 0, JOF_UINT16)
289    
290     /*
291     * ECMA-compliant switch statement ops.
292     * CONDSWITCH is a decompilable NOP; CASE is ===, POP, jump if true, re-push
293     * lval if false; and DEFAULT is POP lval and GOTO.
294     */
295     OPDEF(JSOP_CONDSWITCH,118,"condswitch", NULL, 1, 0, 0, 0, JOF_BYTE|JOF_PARENHEAD)
296     OPDEF(JSOP_CASE, 119,"case", NULL, 3, 2, 1, 0, JOF_JUMP)
297     OPDEF(JSOP_DEFAULT, 120,"default", NULL, 3, 1, 0, 0, JOF_JUMP)
298    
299     /*
300     * ECMA-compliant call to eval op
301     */
302     OPDEF(JSOP_EVAL, 121,"eval", NULL, 3, -1, 1, 18, JOF_UINT16|JOF_INVOKE)
303    
304     /*
305     * ECMA-compliant helper for 'for (x[i] in o)' loops.
306     */
307     OPDEF(JSOP_ENUMELEM, 122,"enumelem", NULL, 1, 3, 0, 3, JOF_BYTE |JOF_SET)
308    
309     /*
310     * Getter and setter prefix bytecodes. These modify the next bytecode, either
311     * an assignment or a property initializer code, which then defines a property
312     * getter or setter.
313     */
314     OPDEF(JSOP_GETTER, 123,js_getter_str,NULL, 1, 0, 0, 0, JOF_BYTE)
315     OPDEF(JSOP_SETTER, 124,js_setter_str,NULL, 1, 0, 0, 0, JOF_BYTE)
316    
317     /*
318     * Prolog bytecodes for defining function, var, and const names.
319     */
320     OPDEF(JSOP_DEFFUN, 125,"deffun", NULL, 3, 0, 0, 0, JOF_OBJECT|JOF_DECLARING)
321     OPDEF(JSOP_DEFCONST, 126,"defconst", NULL, 3, 0, 0, 0, JOF_ATOM|JOF_DECLARING)
322     OPDEF(JSOP_DEFVAR, 127,"defvar", NULL, 3, 0, 0, 0, JOF_ATOM|JOF_DECLARING)
323    
324     /* Auto-clone (if needed due to re-parenting) and push an anonymous function. */
325     OPDEF(JSOP_ANONFUNOBJ, 128, "anonfunobj", NULL, 3, 0, 1, 19, JOF_OBJECT)
326    
327     /* ECMA ed. 3 named function expression. */
328     OPDEF(JSOP_NAMEDFUNOBJ, 129, "namedfunobj", NULL, 3, 0, 1, 19, JOF_OBJECT)
329    
330     /*
331     * Like JSOP_SETLOCAL, but specialized to avoid requiring JSOP_POP immediately
332     * after to throw away the exception value.
333     */
334     OPDEF(JSOP_SETLOCALPOP, 130, "setlocalpop", NULL, 3, 1, 0, 3, JOF_LOCAL|JOF_NAME|JOF_SET)
335    
336     /* Parenthesization opcode to help the decompiler. */
337 siliconforks 399 OPDEF(JSOP_UNUSED131, 131, "unused131", NULL, 1, 0, 0, 0, JOF_BYTE)
338 siliconforks 332
339     /*
340     * Host object extension: given 'o.item(i) = j', the left-hand side compiles
341     * JSOP_SETCALL, rather than JSOP_CALL.
342     */
343     OPDEF(JSOP_SETCALL, 132, "setcall", NULL, 3, -1, 2, 18, JOF_UINT16|JOF_SET)
344    
345     /*
346     * Exception handling no-op, for more economical byte-coding than SRC_TRYFIN
347     * srcnote-annotated JSOP_NOPs and to simply stack balance handling.
348     */
349     OPDEF(JSOP_TRY, 133,"try", NULL, 1, 0, 0, 0, JOF_BYTE)
350     OPDEF(JSOP_FINALLY, 134,"finally", NULL, 1, 0, 2, 0, JOF_BYTE)
351    
352     /*
353     * Generic nop for the decompiler.
354     */
355     OPDEF(JSOP_NOP, 135,"nop", NULL, 1, 0, 0, 0, JOF_BYTE)
356    
357     /*
358     * Bytecodes that avoid making an arguments object in most cases:
359     * JSOP_ARGSUB gets arguments[i] from fp->argv, iff i is in [0, fp->argc-1].
360     * JSOP_ARGCNT returns fp->argc.
361     */
362     OPDEF(JSOP_ARGSUB, 136,"argsub", NULL, 3, 0, 1, 18, JOF_QARG |JOF_NAME)
363     OPDEF(JSOP_ARGCNT, 137,"argcnt", NULL, 1, 0, 1, 18, JOF_BYTE)
364    
365     /*
366     * Define a local function object as a local variable.
367     * The local variable's slot number is the first immediate two-byte operand.
368     * The function object's atom index is the second immediate operand.
369     */
370     OPDEF(JSOP_DEFLOCALFUN, 138,"deflocalfun",NULL, 5, 0, 0, 0, JOF_SLOTOBJECT|JOF_DECLARING)
371    
372     /* Extended jumps. */
373     OPDEF(JSOP_GOTOX, 139,"gotox", NULL, 5, 0, 0, 0, JOF_JUMPX)
374     OPDEF(JSOP_IFEQX, 140,"ifeqx", NULL, 5, 1, 0, 4, JOF_JUMPX|JOF_DETECTING)
375     OPDEF(JSOP_IFNEX, 141,"ifnex", NULL, 5, 1, 0, 0, JOF_JUMPX|JOF_PARENHEAD)
376     OPDEF(JSOP_ORX, 142,"orx", NULL, 5, 1, 0, 5, JOF_JUMPX|JOF_DETECTING)
377     OPDEF(JSOP_ANDX, 143,"andx", NULL, 5, 1, 0, 6, JOF_JUMPX|JOF_DETECTING)
378     OPDEF(JSOP_GOSUBX, 144,"gosubx", NULL, 5, 0, 0, 0, JOF_JUMPX)
379     OPDEF(JSOP_CASEX, 145,"casex", NULL, 5, 2, 1, 0, JOF_JUMPX)
380     OPDEF(JSOP_DEFAULTX, 146,"defaultx", NULL, 5, 1, 0, 0, JOF_JUMPX)
381     OPDEF(JSOP_TABLESWITCHX, 147,"tableswitchx",NULL, -1, 1, 0, 0, JOF_TABLESWITCHX|JOF_DETECTING|JOF_PARENHEAD)
382     OPDEF(JSOP_LOOKUPSWITCHX, 148,"lookupswitchx",NULL, -1, 1, 0, 0, JOF_LOOKUPSWITCHX|JOF_DETECTING|JOF_PARENHEAD)
383    
384     /* Placeholders for a real jump opcode set during backpatch chain fixup. */
385     OPDEF(JSOP_BACKPATCH, 149,"backpatch",NULL, 3, 0, 0, 0, JOF_JUMP|JOF_BACKPATCH)
386     OPDEF(JSOP_BACKPATCH_POP, 150,"backpatch_pop",NULL, 3, 1, 0, 0, JOF_JUMP|JOF_BACKPATCH)
387    
388     /* Set pending exception from the stack, to trigger rethrow. */
389     OPDEF(JSOP_THROWING, 151,"throwing", NULL, 1, 1, 0, 0, JOF_BYTE)
390    
391     /* Set and get return value pseudo-register in stack frame. */
392     OPDEF(JSOP_SETRVAL, 152,"setrval", NULL, 1, 1, 0, 2, JOF_BYTE)
393     OPDEF(JSOP_RETRVAL, 153,"retrval", NULL, 1, 0, 0, 0, JOF_BYTE)
394    
395     /* Optimized global variable ops (we don't bother doing a JSOP_FORGVAR op). */
396     OPDEF(JSOP_GETGVAR, 154,"getgvar", NULL, 3, 0, 1, 19, JOF_ATOM|JOF_NAME)
397     OPDEF(JSOP_SETGVAR, 155,"setgvar", NULL, 3, 1, 1, 3, JOF_ATOM|JOF_NAME|JOF_SET|JOF_DETECTING)
398     OPDEF(JSOP_INCGVAR, 156,"incgvar", NULL, 3, 0, 1, 15, JOF_ATOM|JOF_NAME|JOF_INC|JOF_TMPSLOT2)
399     OPDEF(JSOP_DECGVAR, 157,"decgvar", NULL, 3, 0, 1, 15, JOF_ATOM|JOF_NAME|JOF_DEC|JOF_TMPSLOT2)
400     OPDEF(JSOP_GVARINC, 158,"gvarinc", NULL, 3, 0, 1, 15, JOF_ATOM|JOF_NAME|JOF_INC|JOF_POST|JOF_TMPSLOT2)
401     OPDEF(JSOP_GVARDEC, 159,"gvardec", NULL, 3, 0, 1, 15, JOF_ATOM|JOF_NAME|JOF_DEC|JOF_POST|JOF_TMPSLOT2)
402    
403     /* Regular expression literal requiring special "fork on exec" handling. */
404     OPDEF(JSOP_REGEXP, 160,"regexp", NULL, 3, 0, 1, 19, JOF_REGEXP)
405    
406     /* XML (ECMA-357, a.k.a. "E4X") support. */
407     OPDEF(JSOP_DEFXMLNS, 161,"defxmlns", NULL, 1, 1, 0, 0, JOF_BYTE)
408     OPDEF(JSOP_ANYNAME, 162,"anyname", NULL, 1, 0, 1, 19, JOF_BYTE|JOF_XMLNAME)
409     OPDEF(JSOP_QNAMEPART, 163,"qnamepart", NULL, 3, 0, 1, 19, JOF_ATOM|JOF_XMLNAME)
410     OPDEF(JSOP_QNAMECONST, 164,"qnameconst", NULL, 3, 1, 1, 19, JOF_ATOM|JOF_XMLNAME)
411     OPDEF(JSOP_QNAME, 165,"qname", NULL, 1, 2, 1, 0, JOF_BYTE|JOF_XMLNAME)
412     OPDEF(JSOP_TOATTRNAME, 166,"toattrname", NULL, 1, 1, 1, 19, JOF_BYTE|JOF_XMLNAME)
413     OPDEF(JSOP_TOATTRVAL, 167,"toattrval", NULL, 1, 1, 1, 19, JOF_BYTE)
414     OPDEF(JSOP_ADDATTRNAME, 168,"addattrname",NULL, 1, 2, 1, 13, JOF_BYTE)
415     OPDEF(JSOP_ADDATTRVAL, 169,"addattrval", NULL, 1, 2, 1, 13, JOF_BYTE)
416     OPDEF(JSOP_BINDXMLNAME, 170,"bindxmlname",NULL, 1, 1, 2, 3, JOF_BYTE|JOF_SET)
417     OPDEF(JSOP_SETXMLNAME, 171,"setxmlname", NULL, 1, 3, 1, 3, JOF_BYTE|JOF_SET|JOF_DETECTING)
418     OPDEF(JSOP_XMLNAME, 172,"xmlname", NULL, 1, 1, 1, 19, JOF_BYTE)
419     OPDEF(JSOP_DESCENDANTS, 173,"descendants",NULL, 1, 2, 1, 18, JOF_BYTE)
420     OPDEF(JSOP_FILTER, 174,"filter", NULL, 3, 1, 1, 0, JOF_JUMP)
421     OPDEF(JSOP_ENDFILTER, 175,"endfilter", NULL, 3, 2, 1, 18, JOF_JUMP)
422     OPDEF(JSOP_TOXML, 176,"toxml", NULL, 1, 1, 1, 19, JOF_BYTE)
423     OPDEF(JSOP_TOXMLLIST, 177,"toxmllist", NULL, 1, 1, 1, 19, JOF_BYTE)
424     OPDEF(JSOP_XMLTAGEXPR, 178,"xmltagexpr", NULL, 1, 1, 1, 0, JOF_BYTE)
425     OPDEF(JSOP_XMLELTEXPR, 179,"xmleltexpr", NULL, 1, 1, 1, 0, JOF_BYTE)
426     OPDEF(JSOP_XMLOBJECT, 180,"xmlobject", NULL, 3, 0, 1, 19, JOF_OBJECT)
427     OPDEF(JSOP_XMLCDATA, 181,"xmlcdata", NULL, 3, 0, 1, 19, JOF_ATOM)
428     OPDEF(JSOP_XMLCOMMENT, 182,"xmlcomment", NULL, 3, 0, 1, 19, JOF_ATOM)
429     OPDEF(JSOP_XMLPI, 183,"xmlpi", NULL, 3, 1, 1, 19, JOF_ATOM)
430     OPDEF(JSOP_CALLPROP, 184,"callprop", NULL, 3, 1, 2, 18, JOF_ATOM|JOF_PROP|JOF_CALLOP)
431     OPDEF(JSOP_GETFUNNS, 185,"getfunns", NULL, 1, 0, 1, 19, JOF_BYTE)
432    
433     /*
434     * Get a display (free) variable from the closure's reserved slots.
435     */
436     OPDEF(JSOP_GETUPVAR, 186,"getupvar", NULL, 3, 0, 1, 19, JOF_UINT16|JOF_NAME)
437    
438 siliconforks 399 OPDEF(JSOP_DELDESC, 187,"deldesc", NULL, 1, 2, 1, 15, JOF_BYTE|JOF_ELEM|JOF_DEL)
439 siliconforks 332
440     /*
441     * Opcode to hold 24-bit immediate integer operands.
442     */
443     OPDEF(JSOP_UINT24, 188,"uint24", NULL, 4, 0, 1, 16, JOF_UINT24)
444    
445     /*
446     * Opcodes to allow 24-bit atom or object indexes. Whenever an index exceeds
447     * the 16-bit limit, the index-accessing bytecode must be bracketed by
448     * JSOP_INDEXBASE and JSOP_RESETBASE to provide the upper bits of the index.
449     * See jsemit.c, EmitIndexOp.
450     */
451     OPDEF(JSOP_INDEXBASE, 189,"atombase", NULL, 2, 0, 0, 0, JOF_UINT8|JOF_INDEXBASE)
452     OPDEF(JSOP_RESETBASE, 190,"resetbase", NULL, 1, 0, 0, 0, JOF_BYTE)
453     OPDEF(JSOP_RESETBASE0, 191,"resetbase0", NULL, 1, 0, 0, 0, JOF_BYTE)
454    
455     /*
456     * Opcodes to help the decompiler deal with XML.
457     */
458     OPDEF(JSOP_STARTXML, 192,"startxml", NULL, 1, 0, 0, 0, JOF_BYTE)
459     OPDEF(JSOP_STARTXMLEXPR, 193,"startxmlexpr",NULL, 1, 0, 0, 0, JOF_BYTE)
460    
461     OPDEF(JSOP_CALLELEM, 194, "callelem", NULL, 1, 2, 2, 18, JOF_BYTE |JOF_ELEM|JOF_LEFTASSOC|JOF_CALLOP)
462    
463     /*
464     * Stop interpretation, emitted at end of script to save the threaded bytecode
465     * interpreter an extra branch test on every DO_NEXT_OP (see jsinterp.c).
466     */
467     OPDEF(JSOP_STOP, 195,"stop", NULL, 1, 0, 0, 0, JOF_BYTE)
468    
469     /*
470     * Get an extant property value, throwing ReferenceError if the identified
471     * property does not exist.
472     */
473     OPDEF(JSOP_GETXPROP, 196,"getxprop", NULL, 3, 1, 1, 18, JOF_ATOM|JOF_PROP)
474    
475     OPDEF(JSOP_CALLXMLNAME, 197, "callxmlname", NULL, 1, 1, 2, 19, JOF_BYTE|JOF_CALLOP)
476    
477     /*
478     * Specialized JSOP_TYPEOF to avoid reporting undefined for typeof(0, undef).
479     */
480     OPDEF(JSOP_TYPEOFEXPR, 198,"typeofexpr", NULL, 1, 1, 1, 15, JOF_BYTE|JOF_DETECTING)
481    
482     /*
483     * Block-local scope support.
484     */
485     OPDEF(JSOP_ENTERBLOCK, 199,"enterblock", NULL, 3, 0, -1, 0, JOF_OBJECT)
486     OPDEF(JSOP_LEAVEBLOCK, 200,"leaveblock", NULL, 3, -1, 0, 0, JOF_UINT16)
487     OPDEF(JSOP_UNUSED201, 201,"unused201", NULL, 1, 0, 0, 0, JOF_BYTE)
488     OPDEF(JSOP_UNUSED202, 202,"unused202", NULL, 1, 0, 0, 0, JOF_BYTE)
489     OPDEF(JSOP_UNUSED203, 203,"unused203", NULL, 1, 0, 0, 0, JOF_BYTE)
490     OPDEF(JSOP_UNUSED204, 204,"unused204", NULL, 1, 0, 0, 0, JOF_BYTE)
491     OPDEF(JSOP_UNUSED205, 205,"unused205", NULL, 1, 0, 0, 0, JOF_BYTE)
492     OPDEF(JSOP_UNUSED206, 206,"unused206", NULL, 1, 0, 0, 0, JOF_BYTE)
493     OPDEF(JSOP_UNUSED207, 207,"unused207", NULL, 1, 0, 0, 0, JOF_BYTE)
494 siliconforks 399 OPDEF(JSOP_UNUSED208, 208,"unused208", NULL, 1, 0, 0, 0, JOF_BYTE)
495     OPDEF(JSOP_UNUSED209, 209,"unused209", NULL, 1, 0, 0, 0, JOF_BYTE)
496 siliconforks 332
497     /*
498 siliconforks 399 * Generator and array comprehension support.
499 siliconforks 332 */
500     OPDEF(JSOP_GENERATOR, 210,"generator", NULL, 1, 0, 0, 0, JOF_BYTE)
501     OPDEF(JSOP_YIELD, 211,"yield", NULL, 1, 1, 1, 1, JOF_BYTE)
502     OPDEF(JSOP_ARRAYPUSH, 212,"arraypush", NULL, 3, 1, 0, 3, JOF_LOCAL)
503    
504     /*
505     * In the forthcoming great opcode reorg, this should go next to JSOP_GETUPVAR.
506     */
507     OPDEF(JSOP_CALLUPVAR, 213, "callupvar", NULL, 3, 0, 2, 19, JOF_UINT16|JOF_NAME|JOF_CALLOP)
508    
509     /*
510     * Variant of JSOP_ENUMELEM for destructuring const (const [a, b] = ...).
511     */
512     OPDEF(JSOP_ENUMCONSTELEM, 214,"enumconstelem",NULL, 1, 3, 0, 3, JOF_BYTE|JOF_SET)
513    
514     /*
515     * Variant of JSOP_LEAVEBLOCK has a result on the stack above the locals,
516     * which must be moved down when the block pops.
517     */
518 siliconforks 399 OPDEF(JSOP_LEAVEBLOCKEXPR,215,"leaveblockexpr",NULL, 3, -1, 1, 3, JOF_UINT16)
519 siliconforks 332
520     /*
521     * Optimize common JSOP_{THIS,GET{ARG,LOCAL}} -> JSOP_GETPROP cliches.
522     */
523     OPDEF(JSOP_GETTHISPROP, 216,"getthisprop", NULL, 3, 0, 1, 18, JOF_ATOM|JOF_VARPROP)
524     OPDEF(JSOP_GETARGPROP, 217,"getargprop", NULL, 5, 0, 1, 18, JOF_SLOTATOM|JOF_VARPROP)
525     OPDEF(JSOP_GETLOCALPROP, 218,"getlocalprop", NULL, 5, 0, 1, 18, JOF_SLOTATOM|JOF_VARPROP)
526     OPDEF(JSOP_UNUSED219, 219,"unused219", NULL, 1, 0, 0, 0, JOF_BYTE)
527    
528     /*
529     * Optimize atom segments 1-3. These must be followed by JSOP_RESETBASE0 after
530     * the opcode that they prefix.
531     */
532     OPDEF(JSOP_INDEXBASE1, 220,"atombase1", NULL, 1, 0, 0, 0, JOF_BYTE |JOF_INDEXBASE)
533     OPDEF(JSOP_INDEXBASE2, 221,"atombase2", NULL, 1, 0, 0, 0, JOF_BYTE |JOF_INDEXBASE)
534     OPDEF(JSOP_INDEXBASE3, 222,"atombase3", NULL, 1, 0, 0, 0, JOF_BYTE |JOF_INDEXBASE)
535    
536     OPDEF(JSOP_CALLGVAR, 223, "callgvar", NULL, 3, 0, 2, 19, JOF_ATOM|JOF_NAME|JOF_CALLOP)
537     OPDEF(JSOP_CALLLOCAL, 224, "calllocal", NULL, 3, 0, 2, 19, JOF_LOCAL|JOF_NAME|JOF_CALLOP)
538     OPDEF(JSOP_CALLARG, 225, "callarg", NULL, 3, 0, 2, 19, JOF_QARG |JOF_NAME|JOF_CALLOP)
539     OPDEF(JSOP_UNUSED226, 226, "unused226", NULL, 1, 0, 1, 1, JOF_BYTE)
540    
541     /*
542     * Opcodes to hold 8-bit and 32-bit immediate integer operands.
543     */
544     OPDEF(JSOP_INT8, 227, "int8", NULL, 2, 0, 1, 16, JOF_INT8)
545     OPDEF(JSOP_INT32, 228, "int32", NULL, 5, 0, 1, 16, JOF_INT32)
546    
547     /*
548     * Get the value of the 'length' property from a stacked object.
549     */
550     OPDEF(JSOP_LENGTH, 229, "length", NULL, 1, 1, 1, 18, JOF_BYTE|JOF_PROP)
551    
552     /*
553     * JSOP_NEWARRAY optimizes array literal evaluation using the interpreter stack.
554     * JSOP_HOLE pushes a JSVAL_HOLE (used with JSOP_NEWINIT and JSOP_NEWARRAY).
555     */
556     OPDEF(JSOP_NEWARRAY, 230, "newarray", NULL, 4, -1, 1, 19, JOF_UINT24)
557     OPDEF(JSOP_HOLE, 231, "hole", NULL, 1, 0, 1, 0, JOF_BYTE)

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