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1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2 *
3 * ***** BEGIN LICENSE BLOCK *****
4 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
5 *
6 * The contents of this file are subject to the Mozilla Public License Version
7 * 1.1 (the "License"); you may not use this file except in compliance with
8 * the License. You may obtain a copy of the License at
9 * http://www.mozilla.org/MPL/
10 *
11 * Software distributed under the License is distributed on an "AS IS" basis,
12 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13 * for the specific language governing rights and limitations under the
14 * License.
15 *
16 * The Original Code is Mozilla Communicator client code, released
17 * March 31, 1998.
18 *
19 * The Initial Developer of the Original Code is
20 * Netscape Communications Corporation.
21 * Portions created by the Initial Developer are Copyright (C) 1998
22 * the Initial Developer. All Rights Reserved.
23 *
24 * Contributor(s):
25 *
26 * Alternatively, the contents of this file may be used under the terms of
27 * either of the GNU General Public License Version 2 or later (the "GPL"),
28 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
29 * in which case the provisions of the GPL or the LGPL are applicable instead
30 * of those above. If you wish to allow use of your version of this file only
31 * under the terms of either the GPL or the LGPL, and not to allow others to
32 * use your version of this file under the terms of the MPL, indicate your
33 * decision by deleting the provisions above and replace them with the notice
34 * and other provisions required by the GPL or the LGPL. If you do not delete
35 * the provisions above, a recipient may use your version of this file under
36 * the terms of any one of the MPL, the GPL or the LGPL.
37 *
38 * ***** END LICENSE BLOCK ***** */
40 /*
41 * JavaScript operation bytecodes. If you need to allocate a bytecode, look
42 * for a name of the form JSOP_UNUSED* and claim it. Otherwise, always add at
43 * the end of the table.
44 *
45 * Includers must define an OPDEF macro of the following form:
46 *
47 * #define OPDEF(op,val,name,image,length,nuses,ndefs,prec,format) ...
48 *
49 * Selected arguments can be expanded in initializers. The op argument is
50 * expanded followed by comma in the JSOp enum (jsopcode.h), e.g. The value
51 * field must be dense for now, because jsopcode.c uses an OPDEF() expansion
52 * inside the js_CodeSpec[] initializer.
53 *
54 * Field Description
55 * op Bytecode name, which is the JSOp enumerator name
56 * value Bytecode value, which is the JSOp enumerator value
57 * name C string containing name for disassembler
58 * image C string containing "image" for pretty-printer, null if ugly
59 * length Number of bytes including any immediate operands
60 * nuses Number of stack slots consumed by bytecode, -1 if variadic
61 * ndefs Number of stack slots produced by bytecode
62 * prec Operator precedence, zero if not an operator
63 * format Bytecode plus immediate operand encoding format
64 *
65 * This file is best viewed with 128 columns:
66 12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
67 */
69 /* legend: op val name image len use def prec format */
71 /* Longstanding JavaScript bytecodes. */
72 OPDEF(JSOP_NOP, 0, "nop", NULL, 1, 0, 0, 0, JOF_BYTE)
73 OPDEF(JSOP_PUSH, 1, "push", NULL, 1, 0, 1, 0, JOF_BYTE)
74 OPDEF(JSOP_POPV, 2, "popv", NULL, 1, 1, 0, 0, JOF_BYTE)
75 OPDEF(JSOP_ENTERWITH, 3, "enterwith", NULL, 1, 1, 1, 0, JOF_BYTE)
76 OPDEF(JSOP_LEAVEWITH, 4, "leavewith", NULL, 1, 1, 0, 0, JOF_BYTE)
77 OPDEF(JSOP_RETURN, 5, "return", NULL, 1, 1, 0, 0, JOF_BYTE)
78 OPDEF(JSOP_GOTO, 6, "goto", NULL, 3, 0, 0, 0, JOF_JUMP)
79 OPDEF(JSOP_IFEQ, 7, "ifeq", NULL, 3, 1, 0, 0, JOF_JUMP|JOF_DETECTING)
80 OPDEF(JSOP_IFNE, 8, "ifne", NULL, 3, 1, 0, 0, JOF_JUMP)
82 /* Get the arguments object for the current, lightweight function activation. */
83 OPDEF(JSOP_ARGUMENTS, 9, js_arguments_str, js_arguments_str, 1, 0, 1, 12, JOF_BYTE)
85 /* ECMA-compliant for-in loop with argument or local variable loop control. */
86 OPDEF(JSOP_FORARG, 10, "forarg", NULL, 3, 0, 1, 0, JOF_QARG|JOF_NAME|JOF_FOR)
87 OPDEF(JSOP_FORVAR, 11, "forvar", NULL, 3, 0, 1, 0, JOF_QVAR|JOF_NAME|JOF_FOR)
89 /* More longstanding bytecodes. */
90 OPDEF(JSOP_DUP, 12, "dup", NULL, 1, 1, 2, 0, JOF_BYTE)
91 OPDEF(JSOP_DUP2, 13, "dup2", NULL, 1, 2, 4, 0, JOF_BYTE)
92 OPDEF(JSOP_SETCONST, 14, "setconst", NULL, 3, 1, 1, 1, JOF_CONST|JOF_NAME|JOF_SET|JOF_ASSIGNING)
93 OPDEF(JSOP_BITOR, 15, "bitor", "|", 1, 2, 1, 2, JOF_BYTE|JOF_LEFTASSOC)
94 OPDEF(JSOP_BITXOR, 16, "bitxor", "^", 1, 2, 1, 3, JOF_BYTE|JOF_LEFTASSOC)
95 OPDEF(JSOP_BITAND, 17, "bitand", "&", 1, 2, 1, 4, JOF_BYTE|JOF_LEFTASSOC)
96 OPDEF(JSOP_EQ, 18, "eq", "==", 1, 2, 1, 5, JOF_BYTE|JOF_LEFTASSOC|JOF_DETECTING)
97 OPDEF(JSOP_NE, 19, "ne", "!=", 1, 2, 1, 5, JOF_BYTE|JOF_LEFTASSOC|JOF_DETECTING)
98 OPDEF(JSOP_LT, 20, "lt", "<", 1, 2, 1, 6, JOF_BYTE|JOF_LEFTASSOC)
99 OPDEF(JSOP_LE, 21, "le", "<=", 1, 2, 1, 6, JOF_BYTE|JOF_LEFTASSOC)
100 OPDEF(JSOP_GT, 22, "gt", ">", 1, 2, 1, 6, JOF_BYTE|JOF_LEFTASSOC)
101 OPDEF(JSOP_GE, 23, "ge", ">=", 1, 2, 1, 6, JOF_BYTE|JOF_LEFTASSOC)
102 OPDEF(JSOP_LSH, 24, "lsh", "<<", 1, 2, 1, 7, JOF_BYTE|JOF_LEFTASSOC)
103 OPDEF(JSOP_RSH, 25, "rsh", ">>", 1, 2, 1, 7, JOF_BYTE|JOF_LEFTASSOC)
104 OPDEF(JSOP_URSH, 26, "ursh", ">>>", 1, 2, 1, 7, JOF_BYTE|JOF_LEFTASSOC)
105 OPDEF(JSOP_ADD, 27, "add", "+", 1, 2, 1, 8, JOF_BYTE|JOF_LEFTASSOC)
106 OPDEF(JSOP_SUB, 28, "sub", "-", 1, 2, 1, 8, JOF_BYTE|JOF_LEFTASSOC)
107 OPDEF(JSOP_MUL, 29, "mul", "*", 1, 2, 1, 9, JOF_BYTE|JOF_LEFTASSOC)
108 OPDEF(JSOP_DIV, 30, "div", "/", 1, 2, 1, 9, JOF_BYTE|JOF_LEFTASSOC)
109 OPDEF(JSOP_MOD, 31, "mod", "%", 1, 2, 1, 9, JOF_BYTE|JOF_LEFTASSOC)
110 OPDEF(JSOP_NOT, 32, "not", "!", 1, 1, 1, 10, JOF_BYTE|JOF_DETECTING)
111 OPDEF(JSOP_BITNOT, 33, "bitnot", "~", 1, 1, 1, 10, JOF_BYTE)
112 OPDEF(JSOP_NEG, 34, "neg", "-", 1, 1, 1, 10, JOF_BYTE)
113 OPDEF(JSOP_NEW, 35, js_new_str, NULL, 3, -1, 1, 10, JOF_UINT16)
114 OPDEF(JSOP_DELNAME, 36, "delname", NULL, 3, 0, 1, 10, JOF_CONST|JOF_NAME|JOF_DEL)
115 OPDEF(JSOP_DELPROP, 37, "delprop", NULL, 3, 1, 1, 10, JOF_CONST|JOF_PROP|JOF_DEL)
116 OPDEF(JSOP_DELELEM, 38, "delelem", NULL, 1, 2, 1, 10, JOF_BYTE |JOF_ELEM|JOF_DEL)
117 OPDEF(JSOP_TYPEOF, 39, js_typeof_str,NULL, 1, 1, 1, 10, JOF_BYTE|JOF_DETECTING)
118 OPDEF(JSOP_VOID, 40, js_void_str, NULL, 1, 1, 1, 10, JOF_BYTE)
119 OPDEF(JSOP_INCNAME, 41, "incname", NULL, 3, 0, 1, 10, JOF_CONST|JOF_NAME|JOF_INC)
120 OPDEF(JSOP_INCPROP, 42, "incprop", NULL, 3, 1, 1, 10, JOF_CONST|JOF_PROP|JOF_INC)
121 OPDEF(JSOP_INCELEM, 43, "incelem", NULL, 1, 2, 1, 10, JOF_BYTE |JOF_ELEM|JOF_INC)
122 OPDEF(JSOP_DECNAME, 44, "decname", NULL, 3, 0, 1, 10, JOF_CONST|JOF_NAME|JOF_DEC)
123 OPDEF(JSOP_DECPROP, 45, "decprop", NULL, 3, 1, 1, 10, JOF_CONST|JOF_PROP|JOF_DEC)
124 OPDEF(JSOP_DECELEM, 46, "decelem", NULL, 1, 2, 1, 10, JOF_BYTE |JOF_ELEM|JOF_DEC)
125 OPDEF(JSOP_NAMEINC, 47, "nameinc", NULL, 3, 0, 1, 10, JOF_CONST|JOF_NAME|JOF_INC|JOF_POST)
126 OPDEF(JSOP_PROPINC, 48, "propinc", NULL, 3, 1, 1, 10, JOF_CONST|JOF_PROP|JOF_INC|JOF_POST)
127 OPDEF(JSOP_ELEMINC, 49, "eleminc", NULL, 1, 2, 1, 10, JOF_BYTE |JOF_ELEM|JOF_INC|JOF_POST)
128 OPDEF(JSOP_NAMEDEC, 50, "namedec", NULL, 3, 0, 1, 10, JOF_CONST|JOF_NAME|JOF_DEC|JOF_POST)
129 OPDEF(JSOP_PROPDEC, 51, "propdec", NULL, 3, 1, 1, 10, JOF_CONST|JOF_PROP|JOF_DEC|JOF_POST)
130 OPDEF(JSOP_ELEMDEC, 52, "elemdec", NULL, 1, 2, 1, 10, JOF_BYTE |JOF_ELEM|JOF_DEC|JOF_POST)
131 OPDEF(JSOP_GETPROP, 53, "getprop", NULL, 3, 1, 1, 11, JOF_CONST|JOF_PROP)
132 OPDEF(JSOP_SETPROP, 54, "setprop", NULL, 3, 2, 1, 1, JOF_CONST|JOF_PROP|JOF_SET|JOF_ASSIGNING|JOF_DETECTING)
133 OPDEF(JSOP_GETELEM, 55, "getelem", NULL, 1, 2, 1, 11, JOF_BYTE |JOF_ELEM|JOF_LEFTASSOC)
134 OPDEF(JSOP_SETELEM, 56, "setelem", NULL, 1, 3, 1, 1, JOF_BYTE |JOF_ELEM|JOF_SET|JOF_ASSIGNING|JOF_DETECTING)
135 OPDEF(JSOP_PUSHOBJ, 57, "pushobj", NULL, 1, 0, 1, 0, JOF_BYTE)
136 OPDEF(JSOP_CALL, 58, "call", NULL, 3, -1, 1, 11, JOF_UINT16)
137 OPDEF(JSOP_NAME, 59, "name", NULL, 3, 0, 1, 12, JOF_CONST|JOF_NAME)
138 OPDEF(JSOP_NUMBER, 60, "number", NULL, 3, 0, 1, 12, JOF_CONST)
139 OPDEF(JSOP_STRING, 61, "string", NULL, 3, 0, 1, 12, JOF_CONST)
140 OPDEF(JSOP_ZERO, 62, "zero", "0", 1, 0, 1, 12, JOF_BYTE)
141 OPDEF(JSOP_ONE, 63, "one", "1", 1, 0, 1, 12, JOF_BYTE)
142 OPDEF(JSOP_NULL, 64, js_null_str, js_null_str, 1, 0, 1, 12, JOF_BYTE)
143 OPDEF(JSOP_THIS, 65, js_this_str, js_this_str, 1, 0, 1, 12, JOF_BYTE)
144 OPDEF(JSOP_FALSE, 66, js_false_str, js_false_str, 1, 0, 1, 12, JOF_BYTE)
145 OPDEF(JSOP_TRUE, 67, js_true_str, js_true_str, 1, 0, 1, 12, JOF_BYTE)
146 OPDEF(JSOP_OR, 68, "or", NULL, 3, 1, 0, 0, JOF_JUMP|JOF_DETECTING)
147 OPDEF(JSOP_AND, 69, "and", NULL, 3, 1, 0, 0, JOF_JUMP|JOF_DETECTING)
149 /* The switch bytecodes have variable length. */
150 OPDEF(JSOP_TABLESWITCH, 70, "tableswitch", NULL, -1, 1, 0, 0, JOF_TABLESWITCH|JOF_DETECTING)
151 OPDEF(JSOP_LOOKUPSWITCH, 71, "lookupswitch", NULL, -1, 1, 0, 0, JOF_LOOKUPSWITCH|JOF_DETECTING)
153 /* New, infallible/transitive identity ops. */
154 OPDEF(JSOP_NEW_EQ, 72, "eq", NULL, 1, 2, 1, 5, JOF_BYTE|JOF_DETECTING)
155 OPDEF(JSOP_NEW_NE, 73, "ne", NULL, 1, 2, 1, 5, JOF_BYTE|JOF_DETECTING)
157 /* Lexical closure constructor. */
158 OPDEF(JSOP_CLOSURE, 74, "closure", NULL, 3, 0, 0, 0, JOF_CONST)
160 /* Export and import ops. */
161 OPDEF(JSOP_EXPORTALL, 75, "exportall", NULL, 1, 0, 0, 0, JOF_BYTE)
162 OPDEF(JSOP_EXPORTNAME,76, "exportname", NULL, 3, 0, 0, 0, JOF_CONST|JOF_NAME)
163 OPDEF(JSOP_IMPORTALL, 77, "importall", NULL, 1, 1, 0, 0, JOF_BYTE)
164 OPDEF(JSOP_IMPORTPROP,78, "importprop", NULL, 3, 1, 0, 0, JOF_CONST|JOF_PROP|JOF_IMPORT)
165 OPDEF(JSOP_IMPORTELEM,79, "importelem", NULL, 1, 2, 0, 0, JOF_BYTE |JOF_ELEM|JOF_IMPORT)
167 /* Push object literal. */
168 OPDEF(JSOP_OBJECT, 80, "object", NULL, 3, 0, 1, 12, JOF_CONST)
170 /* Pop value and discard it. */
171 OPDEF(JSOP_POP, 81, "pop", NULL, 1, 1, 0, 0, JOF_BYTE)
173 /* Convert value to number, for unary +. */
174 OPDEF(JSOP_POS, 82, "pos", "+", 1, 1, 1, 10, JOF_BYTE)
176 /* Trap into debugger for breakpoint, etc. */
177 OPDEF(JSOP_TRAP, 83, "trap", NULL, 1, 0, 0, 0, JOF_BYTE)
179 /* Fast get/set ops for function arguments and local variables. */
180 OPDEF(JSOP_GETARG, 84, "getarg", NULL, 3, 0, 1, 12, JOF_QARG |JOF_NAME)
181 OPDEF(JSOP_SETARG, 85, "setarg", NULL, 3, 1, 1, 1, JOF_QARG |JOF_NAME|JOF_SET|JOF_ASSIGNING)
182 OPDEF(JSOP_GETVAR, 86, "getvar", NULL, 3, 0, 1, 12, JOF_QVAR |JOF_NAME)
183 OPDEF(JSOP_SETVAR, 87, "setvar", NULL, 3, 1, 1, 1, JOF_QVAR |JOF_NAME|JOF_SET|JOF_ASSIGNING|JOF_DETECTING)
185 /* Push unsigned 16-bit int constant. */
186 OPDEF(JSOP_UINT16, 88, "uint16", NULL, 3, 0, 1, 12, JOF_UINT16)
188 /* Object and array literal support. */
189 OPDEF(JSOP_NEWINIT, 89, "newinit", NULL, 1, 2, 1, 10, JOF_BYTE)
190 OPDEF(JSOP_ENDINIT, 90, "endinit", NULL, 1, 0, 0, 0, JOF_BYTE)
191 OPDEF(JSOP_INITPROP, 91, "initprop", NULL, 3, 1, 0, 0, JOF_CONST|JOF_PROP|JOF_DETECTING)
192 OPDEF(JSOP_INITELEM, 92, "initelem", NULL, 1, 2, 0, 0, JOF_BYTE |JOF_ELEM|JOF_DETECTING)
193 OPDEF(JSOP_DEFSHARP, 93, "defsharp", NULL, 3, 0, 0, 0, JOF_UINT16)
194 OPDEF(JSOP_USESHARP, 94, "usesharp", NULL, 3, 0, 1, 0, JOF_UINT16)
196 /* Fast inc/dec ops for args and local vars. */
197 OPDEF(JSOP_INCARG, 95, "incarg", NULL, 3, 0, 1, 10, JOF_QARG |JOF_NAME|JOF_INC)
198 OPDEF(JSOP_INCVAR, 96, "incvar", NULL, 3, 0, 1, 10, JOF_QVAR |JOF_NAME|JOF_INC)
199 OPDEF(JSOP_DECARG, 97, "decarg", NULL, 3, 0, 1, 10, JOF_QARG |JOF_NAME|JOF_DEC)
200 OPDEF(JSOP_DECVAR, 98, "decvar", NULL, 3, 0, 1, 10, JOF_QVAR |JOF_NAME|JOF_DEC)
201 OPDEF(JSOP_ARGINC, 99, "arginc", NULL, 3, 0, 1, 10, JOF_QARG |JOF_NAME|JOF_INC|JOF_POST)
202 OPDEF(JSOP_VARINC, 100,"varinc", NULL, 3, 0, 1, 10, JOF_QVAR |JOF_NAME|JOF_INC|JOF_POST)
203 OPDEF(JSOP_ARGDEC, 101,"argdec", NULL, 3, 0, 1, 10, JOF_QARG |JOF_NAME|JOF_DEC|JOF_POST)
204 OPDEF(JSOP_VARDEC, 102,"vardec", NULL, 3, 0, 1, 10, JOF_QVAR |JOF_NAME|JOF_DEC|JOF_POST)
206 /* ECMA-compliant for/in ops. */
207 OPDEF(JSOP_TOOBJECT, 103,"toobject", NULL, 1, 1, 1, 0, JOF_BYTE)
208 OPDEF(JSOP_FORNAME, 104,"forname", NULL, 3, 0, 1, 0, JOF_CONST|JOF_NAME|JOF_FOR)
209 OPDEF(JSOP_FORPROP, 105,"forprop", NULL, 3, 1, 1, 0, JOF_CONST|JOF_PROP|JOF_FOR)
210 OPDEF(JSOP_FORELEM, 106,"forelem", NULL, 1, 2, 4, 0, JOF_BYTE |JOF_ELEM|JOF_FOR)
211 OPDEF(JSOP_POP2, 107,"pop2", NULL, 1, 2, 0, 0, JOF_BYTE)
213 /* ECMA-compliant assignment ops. */
214 OPDEF(JSOP_BINDNAME, 108,"bindname", NULL, 3, 0, 1, 0, JOF_CONST|JOF_NAME|JOF_SET|JOF_ASSIGNING)
215 OPDEF(JSOP_SETNAME, 109,"setname", NULL, 3, 2, 1, 1, JOF_CONST|JOF_NAME|JOF_SET|JOF_ASSIGNING|JOF_DETECTING)
217 /* Exception handling ops. */
218 OPDEF(JSOP_THROW, 110,"throw", NULL, 1, 1, 0, 0, JOF_BYTE)
220 /* 'in' and 'instanceof' ops. */
221 OPDEF(JSOP_IN, 111,js_in_str, js_in_str, 1, 2, 1, 6, JOF_BYTE|JOF_LEFTASSOC)
222 OPDEF(JSOP_INSTANCEOF,112,js_instanceof_str,js_instanceof_str,1,2,1,6,JOF_BYTE|JOF_LEFTASSOC)
224 /* debugger op */
225 OPDEF(JSOP_DEBUGGER, 113,"debugger", NULL, 1, 0, 0, 0, JOF_BYTE)
227 /* gosub/retsub for finally handling */
228 OPDEF(JSOP_GOSUB, 114,"gosub", NULL, 3, 0, 0, 0, JOF_JUMP)
229 OPDEF(JSOP_RETSUB, 115,"retsub", NULL, 1, 0, 0, 0, JOF_BYTE)
231 /* More exception handling ops. */
232 OPDEF(JSOP_EXCEPTION, 116,"exception", NULL, 1, 0, 1, 0, JOF_BYTE)
233 OPDEF(JSOP_SETSP, 117,"setsp", NULL, 3, 0, 0, 0, JOF_UINT16)
235 /*
236 * ECMA-compliant switch statement ops.
237 * CONDSWITCH is a decompilable NOP; CASE is ===, POP, jump if true, re-push
238 * lval if false; and DEFAULT is POP lval and GOTO.
239 */
240 OPDEF(JSOP_CONDSWITCH,118,"condswitch", NULL, 1, 0, 0, 0, JOF_BYTE)
241 OPDEF(JSOP_CASE, 119,"case", NULL, 3, 1, 0, 0, JOF_JUMP)
242 OPDEF(JSOP_DEFAULT, 120,"default", NULL, 3, 1, 0, 0, JOF_JUMP)
244 /*
245 * ECMA-compliant call to eval op
246 */
247 OPDEF(JSOP_EVAL, 121,"eval", NULL, 3, -1, 1, 11, JOF_UINT16)
249 /*
250 * ECMA-compliant helper for 'for (x[i] in o)' loops.
251 */
252 OPDEF(JSOP_ENUMELEM, 122,"enumelem", NULL, 1, 3, 0, 1, JOF_BYTE |JOF_SET|JOF_ASSIGNING)
254 /*
255 * Getter and setter prefix bytecodes. These modify the next bytecode, either
256 * an assignment or a property initializer code, which then defines a property
257 * getter or setter.
258 */
259 OPDEF(JSOP_GETTER, 123,js_getter_str,NULL, 1, 0, 0, 0, JOF_BYTE)
260 OPDEF(JSOP_SETTER, 124,js_setter_str,NULL, 1, 0, 0, 0, JOF_BYTE)
262 /*
263 * Prolog bytecodes for defining function, var, and const names.
264 */
265 OPDEF(JSOP_DEFFUN, 125,"deffun", NULL, 3, 0, 0, 0, JOF_CONST|JOF_DECLARING)
266 OPDEF(JSOP_DEFCONST, 126,"defconst", NULL, 3, 0, 0, 0, JOF_CONST|JOF_DECLARING)
267 OPDEF(JSOP_DEFVAR, 127,"defvar", NULL, 3, 0, 0, 0, JOF_CONST|JOF_DECLARING)
269 /* Auto-clone (if needed due to re-parenting) and push an anonymous function. */
270 OPDEF(JSOP_ANONFUNOBJ, 128, "anonfunobj", NULL, 3, 0, 1, 12, JOF_CONST)
272 /* ECMA ed. 3 named function expression. */
273 OPDEF(JSOP_NAMEDFUNOBJ, 129, "namedfunobj", NULL, 3, 0, 1, 12, JOF_CONST)
275 /*
276 * Like JSOP_INITPROP, but specialized to make a DontDelete property for ECMA
277 * Edition 3 catch variables.
278 */
279 OPDEF(JSOP_INITCATCHVAR,130, "initcatchvar",NULL, 3, 1, 0, 0, JOF_CONST)
281 /* ECMA-mandated parenthesization opcode, which nulls the reference base register, obj; see jsinterp.c. */
282 OPDEF(JSOP_GROUP, 131, "group", NULL, 1, 0, 0, 0, JOF_BYTE)
284 /* Host object extension: given 'o.item(i) = j', the left-hand side compiles JSOP_SETCALL, rather than JSOP_CALL. */
285 OPDEF(JSOP_SETCALL, 132, "setcall", NULL, 3, -1, 2, 11, JOF_UINT16|JOF_SET|JOF_ASSIGNING)
287 /*
288 * Exception handling no-ops, for more economical byte-coding than SRC_TRYFIN
289 * srcnote-annotated JSOP_NOPs.
290 */
291 OPDEF(JSOP_TRY, 133,"try", NULL, 1, 0, 0, 0, JOF_BYTE)
292 OPDEF(JSOP_FINALLY, 134,"finally", NULL, 1, 0, 0, 0, JOF_BYTE)
294 /*
295 * Swap the top two stack elements.
296 * N.B. JSOP_SWAP doesn't swap the corresponding pc stack generating pcs, as
297 * they're not needed for the current use of preserving the top-of-stack return
298 * value when popping scopes while returning from catch blocks.
299 */
300 OPDEF(JSOP_SWAP, 135,"swap", NULL, 1, 2, 2, 0, JOF_BYTE)
302 /*
303 * Bytecodes that avoid making an arguments object in most cases:
304 * JSOP_ARGSUB gets arguments[i] from fp->argv, iff i is in [0, fp->argc-1].
305 * JSOP_ARGCNT returns fp->argc.
306 */
307 OPDEF(JSOP_ARGSUB, 136,"argsub", NULL, 3, 0, 1, 12, JOF_QARG |JOF_NAME)
308 OPDEF(JSOP_ARGCNT, 137,"argcnt", NULL, 1, 0, 1, 12, JOF_BYTE)
310 /*
311 * Define a local function object as a local variable.
312 * The local variable's slot number is the first immediate two-byte operand.
313 * The function object's atom index is the second immediate operand.
314 */
315 OPDEF(JSOP_DEFLOCALFUN, 138,"deflocalfun",NULL, 5, 0, 0, 0, JOF_INDEXCONST|JOF_DECLARING)
317 /* Extended jumps. */
318 OPDEF(JSOP_GOTOX, 139,"gotox", NULL, 5, 0, 0, 0, JOF_JUMPX)
319 OPDEF(JSOP_IFEQX, 140,"ifeqx", NULL, 5, 1, 0, 0, JOF_JUMPX|JOF_DETECTING)
320 OPDEF(JSOP_IFNEX, 141,"ifnex", NULL, 5, 1, 0, 0, JOF_JUMPX)
321 OPDEF(JSOP_ORX, 142,"orx", NULL, 5, 1, 0, 0, JOF_JUMPX|JOF_DETECTING)
322 OPDEF(JSOP_ANDX, 143,"andx", NULL, 5, 1, 0, 0, JOF_JUMPX|JOF_DETECTING)
323 OPDEF(JSOP_GOSUBX, 144,"gosubx", NULL, 5, 0, 0, 0, JOF_JUMPX)
324 OPDEF(JSOP_CASEX, 145,"casex", NULL, 5, 1, 0, 0, JOF_JUMPX)
325 OPDEF(JSOP_DEFAULTX, 146,"defaultx", NULL, 5, 1, 0, 0, JOF_JUMPX)
326 OPDEF(JSOP_TABLESWITCHX, 147,"tableswitchx",NULL, -1, 1, 0, 0, JOF_TABLESWITCHX|JOF_DETECTING)
327 OPDEF(JSOP_LOOKUPSWITCHX, 148,"lookupswitchx",NULL, -1, 1, 0, 0, JOF_LOOKUPSWITCHX|JOF_DETECTING)
329 /* Placeholders for a real jump opcode set during backpatch chain fixup. */
330 OPDEF(JSOP_BACKPATCH, 149,"backpatch",NULL, 3, 0, 0, 0, JOF_JUMP|JOF_BACKPATCH)
331 OPDEF(JSOP_BACKPATCH_POP, 150,"backpatch_pop",NULL, 3, 1, 0, 0, JOF_JUMP|JOF_BACKPATCH)
333 /* Set cx->throwing where cx->exception was already set, to trigger rethrow. */
334 OPDEF(JSOP_THROWING, 151,"throwing", NULL, 1, 0, 0, 0, JOF_BYTE)
336 /* Set and get return value pseudo-register in stack frame. */
337 OPDEF(JSOP_SETRVAL, 152,"setrval", NULL, 1, 1, 0, 0, JOF_BYTE)
338 OPDEF(JSOP_RETRVAL, 153,"retrval", NULL, 1, 0, 0, 0, JOF_BYTE)
340 /* Optimized global variable ops (we don't bother doing a JSOP_FORGVAR op). */
341 OPDEF(JSOP_GETGVAR, 154,"getgvar", NULL, 3, 0, 1, 12, JOF_CONST|JOF_NAME)
342 OPDEF(JSOP_SETGVAR, 155,"setgvar", NULL, 3, 1, 1, 1, JOF_CONST|JOF_NAME|JOF_SET|JOF_ASSIGNING|JOF_DETECTING)
343 OPDEF(JSOP_INCGVAR, 156,"incgvar", NULL, 3, 0, 1, 10, JOF_CONST|JOF_NAME|JOF_INC)
344 OPDEF(JSOP_DECGVAR, 157,"decgvar", NULL, 3, 0, 1, 10, JOF_CONST|JOF_NAME|JOF_DEC)
345 OPDEF(JSOP_GVARINC, 158,"gvarinc", NULL, 3, 0, 1, 10, JOF_CONST|JOF_NAME|JOF_INC|JOF_POST)
346 OPDEF(JSOP_GVARDEC, 159,"gvardec", NULL, 3, 0, 1, 10, JOF_CONST|JOF_NAME|JOF_DEC|JOF_POST)
348 /* Regular expression literal requiring special "fork on exec" handling. */
349 OPDEF(JSOP_REGEXP, 160,"regexp", NULL, 3, 0, 1, 12, JOF_CONST)
351 /* XML (ECMA-357, a.k.a. "E4X") support. */
352 OPDEF(JSOP_DEFXMLNS, 161,"defxmlns", NULL, 1, 1, 0, 0, JOF_BYTE)
353 OPDEF(JSOP_ANYNAME, 162,"anyname", NULL, 1, 0, 1, 12, JOF_BYTE|JOF_XMLNAME)
354 OPDEF(JSOP_QNAMEPART, 163,"qnamepart", NULL, 3, 0, 1, 12, JOF_CONST|JOF_XMLNAME)
355 OPDEF(JSOP_QNAMECONST, 164,"qnameconst", NULL, 3, 1, 1, 12, JOF_CONST|JOF_XMLNAME)
356 OPDEF(JSOP_QNAME, 165,"qname", NULL, 1, 2, 1, 0, JOF_BYTE|JOF_XMLNAME)
357 OPDEF(JSOP_TOATTRNAME, 166,"toattrname", NULL, 1, 1, 1, 12, JOF_BYTE|JOF_XMLNAME)
358 OPDEF(JSOP_TOATTRVAL, 167,"toattrval", NULL, 1, 1, 1, 12, JOF_BYTE)
359 OPDEF(JSOP_ADDATTRNAME, 168,"addattrname",NULL, 1, 2, 1, 8, JOF_BYTE)
360 OPDEF(JSOP_ADDATTRVAL, 169,"addattrval", NULL, 1, 2, 1, 8, JOF_BYTE)
361 OPDEF(JSOP_BINDXMLNAME, 170,"bindxmlname",NULL, 1, 1, 2, 0, JOF_BYTE|JOF_XMLNAME|JOF_SET|JOF_ASSIGNING)
362 OPDEF(JSOP_SETXMLNAME, 171,"setxmlname", NULL, 1, 3, 1, 1, JOF_BYTE|JOF_XMLNAME|JOF_SET|JOF_ASSIGNING|JOF_DETECTING)
363 OPDEF(JSOP_XMLNAME, 172,"xmlname", NULL, 1, 1, 1, 12, JOF_BYTE|JOF_XMLNAME)
364 OPDEF(JSOP_DESCENDANTS, 173,"descendants",NULL, 1, 2, 1, 11, JOF_BYTE)
365 OPDEF(JSOP_FILTER, 174,"filter", NULL, 3, 1, 1, 11, JOF_JUMP)
366 OPDEF(JSOP_ENDFILTER, 175,"endfilter", NULL, 1, 1, 0, 0, JOF_BYTE)
367 OPDEF(JSOP_TOXML, 176,"toxml", NULL, 1, 1, 1, 12, JOF_BYTE)
368 OPDEF(JSOP_TOXMLLIST, 177,"toxmllist", NULL, 1, 1, 1, 12, JOF_BYTE)
369 OPDEF(JSOP_XMLTAGEXPR, 178,"xmltagexpr", NULL, 1, 1, 1, 0, JOF_BYTE)
370 OPDEF(JSOP_XMLELTEXPR, 179,"xmleltexpr", NULL, 1, 1, 1, 0, JOF_BYTE)
371 OPDEF(JSOP_XMLOBJECT, 180,"xmlobject", NULL, 3, 0, 1, 12, JOF_CONST)
372 OPDEF(JSOP_XMLCDATA, 181,"xmlcdata", NULL, 3, 0, 1, 12, JOF_CONST)
373 OPDEF(JSOP_XMLCOMMENT, 182,"xmlcomment", NULL, 3, 0, 1, 12, JOF_CONST)
374 OPDEF(JSOP_XMLPI, 183,"xmlpi", NULL, 3, 1, 1, 12, JOF_CONST)
375 OPDEF(JSOP_GETMETHOD, 184,"getmethod", NULL, 3, 1, 1, 11, JOF_CONST|JOF_PROP)
376 OPDEF(JSOP_GETFUNNS, 185,"getfunns", NULL, 1, 0, 1, 12, JOF_BYTE)
377 OPDEF(JSOP_FOREACH, 186,"foreach", NULL, 1, 0, 0, 0, JOF_BYTE)
378 OPDEF(JSOP_DELDESC, 187,"deldesc", NULL, 1, 2, 1, 10, JOF_BYTE |JOF_ELEM|JOF_DEL)
380 /*
381 * Opcodes for extended literal addressing, using unsigned 24-bit immediate
382 * operands to hold integer operands (JSOP_UINT24), extended atom indexes in
383 * script->atomMap (JSOP_LITERAL, JSOP_FINDNAME), and ops prefixed by such
384 * atom index immediates (JSOP_LITOPX). See jsemit.c, EmitAtomIndexOp.
385 */
386 OPDEF(JSOP_UINT24, 188,"uint24", NULL, 4, 0, 1, 12, JOF_UINT24)
387 OPDEF(JSOP_LITERAL, 189,"literal", NULL, 4, 0, 1, 12, JOF_UINT24)
388 OPDEF(JSOP_FINDNAME, 190,"findname", NULL, 4, 0, 2, 0, JOF_UINT24)
389 OPDEF(JSOP_LITOPX, 191,"litopx", NULL, 5, 0, 0, 12, JOF_LITOPX)
391 /*
392 * Opcodes to help the decompiler deal with XML.
393 */
394 OPDEF(JSOP_STARTXML, 192,"startxml", NULL, 1, 0, 0, 0, JOF_BYTE)
395 OPDEF(JSOP_STARTXMLEXPR, 193,"startxmlexpr",NULL, 1, 0, 0, 0, JOF_BYTE)
396 OPDEF(JSOP_SETMETHOD, 194,"setmethod", NULL, 3, 2, 1, 1, JOF_CONST|JOF_PROP)