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/js/lib/Socket.IO-node/support/expresso/deps/jscoverage/js/jsopcode.tbl

http://github.com/onedayitwillmake/RealtimeMultiplayerNodeJs
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  1/* -*- 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 *  1           yield w                 JSOP_YIELD
 68 *  2           ,                       JSOP_POP with SRC_PCDELTA, JSOP_RETURN
 69 *  3           =, +=, etc.             JSOP_SETNAME, etc. (all JOF_SET);
 70 *                let (...) ...           and JSOP_LEAVEBLOCKEXPR
 71 *  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 * 15           !, ~, delete, etc.      JSOP_NOT, JSOP_BITNOT, JSOP_DEL*, etc.
 83 * 16           3.14, 0, etc.           JSOP_DOUBLE, JSOP_ZERO, etc.
 84 * 17           new                     JSOP_NEW
 85 * 18           x.y, f(), etc.          JSOP_GETPROP, JSOP_CALL, etc.
 86 * 19           x, null,                JSOP_NAME, JSOP_NULL, etc.;
 87 *               function (...) ...       and JSOP_ANONFUNOBJ, JSOP_NAMEDFUNOBJ
 88 *
 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 * Otherwise the . could be taken as a decimal point.
 93 *
 94 * 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 * This file is best viewed with 128 columns:
10312345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
104 */
105
106/* legend: op         val name          image       len use def prec  format */
107
108/* Longstanding JavaScript bytecodes. */
109OPDEF(JSOP_INTERRUPT, 0,  "interrupt",  NULL,         1,  0,  0,  0,  JOF_BYTE)
110OPDEF(JSOP_PUSH,      1,  "push",       NULL,         1,  0,  1,  0,  JOF_BYTE)
111OPDEF(JSOP_POPV,      2,  "popv",       NULL,         1,  1,  0,  2,  JOF_BYTE)
112OPDEF(JSOP_ENTERWITH, 3,  "enterwith",  NULL,         1,  1,  1,  0,  JOF_BYTE|JOF_PARENHEAD)
113OPDEF(JSOP_LEAVEWITH, 4,  "leavewith",  NULL,         1,  1,  0,  0,  JOF_BYTE)
114OPDEF(JSOP_RETURN,    5,  "return",     NULL,         1,  1,  0,  2,  JOF_BYTE)
115OPDEF(JSOP_GOTO,      6,  "goto",       NULL,         3,  0,  0,  0,  JOF_JUMP)
116OPDEF(JSOP_IFEQ,      7,  "ifeq",       NULL,         3,  1,  0,  4,  JOF_JUMP|JOF_DETECTING)
117OPDEF(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. */
120OPDEF(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. */
123OPDEF(JSOP_FORARG,    10, "forarg",     NULL,         3,  2,  2, 19,  JOF_QARG|JOF_NAME|JOF_FOR)
124OPDEF(JSOP_FORLOCAL,  11, "forlocal",   NULL,         3,  2,  2, 19,  JOF_LOCAL|JOF_NAME|JOF_FOR)
125
126/* More longstanding bytecodes. */
127OPDEF(JSOP_DUP,       12, "dup",        NULL,         1,  1,  2,  0,  JOF_BYTE)
128OPDEF(JSOP_DUP2,      13, "dup2",       NULL,         1,  2,  4,  0,  JOF_BYTE)
129OPDEF(JSOP_SETCONST,  14, "setconst",   NULL,         3,  1,  1,  3,  JOF_ATOM|JOF_NAME|JOF_SET)
130OPDEF(JSOP_BITOR,     15, "bitor",      "|",          1,  2,  1,  7,  JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
131OPDEF(JSOP_BITXOR,    16, "bitxor",     "^",          1,  2,  1,  8,  JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
132OPDEF(JSOP_BITAND,    17, "bitand",     "&",          1,  2,  1,  9,  JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
133OPDEF(JSOP_EQ,        18, "eq",         "==",         1,  2,  1,  10,  JOF_BYTE|JOF_LEFTASSOC|JOF_DETECTING)
134OPDEF(JSOP_NE,        19, "ne",         "!=",         1,  2,  1,  10,  JOF_BYTE|JOF_LEFTASSOC|JOF_DETECTING)
135OPDEF(JSOP_LT,        20, "lt",         "<",          1,  2,  1, 11,  JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
136OPDEF(JSOP_LE,        21, "le",         "<=",         1,  2,  1, 11,  JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
137OPDEF(JSOP_GT,        22, "gt",         ">",          1,  2,  1, 11,  JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
138OPDEF(JSOP_GE,        23, "ge",         ">=",         1,  2,  1, 11,  JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
139OPDEF(JSOP_LSH,       24, "lsh",        "<<",         1,  2,  1, 12,  JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
140OPDEF(JSOP_RSH,       25, "rsh",        ">>",         1,  2,  1, 12,  JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
141OPDEF(JSOP_URSH,      26, "ursh",       ">>>",        1,  2,  1, 12,  JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
142OPDEF(JSOP_ADD,       27, "add",        "+",          1,  2,  1, 13,  JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
143OPDEF(JSOP_SUB,       28, "sub",        "-",          1,  2,  1, 13,  JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
144OPDEF(JSOP_MUL,       29, "mul",        "*",          1,  2,  1, 14,  JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
145OPDEF(JSOP_DIV,       30, "div",        "/",          1,  2,  1, 14,  JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
146OPDEF(JSOP_MOD,       31, "mod",        "%",          1,  2,  1, 14,  JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT2)
147OPDEF(JSOP_NOT,       32, "not",        "!",          1,  1,  1, 15,  JOF_BYTE|JOF_DETECTING)
148OPDEF(JSOP_BITNOT,    33, "bitnot",     "~",          1,  1,  1, 15,  JOF_BYTE)
149OPDEF(JSOP_NEG,       34, "neg",        "- ",         1,  1,  1, 15,  JOF_BYTE)
150OPDEF(JSOP_NEW,       35, js_new_str,   NULL,         3, -1,  1, 17,  JOF_UINT16|JOF_INVOKE)
151OPDEF(JSOP_DELNAME,   36, "delname",    NULL,         3,  0,  1, 15,  JOF_ATOM|JOF_NAME|JOF_DEL)
152OPDEF(JSOP_DELPROP,   37, "delprop",    NULL,         3,  1,  1, 15,  JOF_ATOM|JOF_PROP|JOF_DEL)
153OPDEF(JSOP_DELELEM,   38, "delelem",    NULL,         1,  2,  1, 15,  JOF_BYTE |JOF_ELEM|JOF_DEL)
154OPDEF(JSOP_TYPEOF,    39, js_typeof_str,NULL,         1,  1,  1, 15,  JOF_BYTE|JOF_DETECTING)
155OPDEF(JSOP_VOID,      40, js_void_str,  NULL,         1,  1,  1, 15,  JOF_BYTE)
156
157OPDEF(JSOP_INCNAME,   41, "incname",    NULL,         3,  0,  1, 15,  JOF_ATOM|JOF_NAME|JOF_INC|JOF_TMPSLOT2)
158OPDEF(JSOP_INCPROP,   42, "incprop",    NULL,         3,  1,  1, 15,  JOF_ATOM|JOF_PROP|JOF_INC|JOF_TMPSLOT2)
159OPDEF(JSOP_INCELEM,   43, "incelem",    NULL,         1,  2,  1, 15,  JOF_BYTE |JOF_ELEM|JOF_INC|JOF_TMPSLOT2)
160OPDEF(JSOP_DECNAME,   44, "decname",    NULL,         3,  0,  1, 15,  JOF_ATOM|JOF_NAME|JOF_DEC|JOF_TMPSLOT2)
161OPDEF(JSOP_DECPROP,   45, "decprop",    NULL,         3,  1,  1, 15,  JOF_ATOM|JOF_PROP|JOF_DEC|JOF_TMPSLOT2)
162OPDEF(JSOP_DECELEM,   46, "decelem",    NULL,         1,  2,  1, 15,  JOF_BYTE |JOF_ELEM|JOF_DEC|JOF_TMPSLOT2)
163OPDEF(JSOP_NAMEINC,   47, "nameinc",    NULL,         3,  0,  1, 15,  JOF_ATOM|JOF_NAME|JOF_INC|JOF_POST|JOF_TMPSLOT2)
164OPDEF(JSOP_PROPINC,   48, "propinc",    NULL,         3,  1,  1, 15,  JOF_ATOM|JOF_PROP|JOF_INC|JOF_POST|JOF_TMPSLOT2)
165OPDEF(JSOP_ELEMINC,   49, "eleminc",    NULL,         1,  2,  1, 15,  JOF_BYTE |JOF_ELEM|JOF_INC|JOF_POST|JOF_TMPSLOT2)
166OPDEF(JSOP_NAMEDEC,   50, "namedec",    NULL,         3,  0,  1, 15,  JOF_ATOM|JOF_NAME|JOF_DEC|JOF_POST|JOF_TMPSLOT2)
167OPDEF(JSOP_PROPDEC,   51, "propdec",    NULL,         3,  1,  1, 15,  JOF_ATOM|JOF_PROP|JOF_DEC|JOF_POST|JOF_TMPSLOT2)
168OPDEF(JSOP_ELEMDEC,   52, "elemdec",    NULL,         1,  2,  1, 15,  JOF_BYTE |JOF_ELEM|JOF_DEC|JOF_POST|JOF_TMPSLOT2)
169
170OPDEF(JSOP_GETPROP,   53, "getprop",    NULL,         3,  1,  1, 18,  JOF_ATOM|JOF_PROP)
171OPDEF(JSOP_SETPROP,   54, "setprop",    NULL,         3,  2,  1,  3,  JOF_ATOM|JOF_PROP|JOF_SET|JOF_DETECTING)
172OPDEF(JSOP_GETELEM,   55, "getelem",    NULL,         1,  2,  1, 18,  JOF_BYTE |JOF_ELEM|JOF_LEFTASSOC)
173OPDEF(JSOP_SETELEM,   56, "setelem",    NULL,         1,  3,  1,  3,  JOF_BYTE |JOF_ELEM|JOF_SET|JOF_DETECTING)
174OPDEF(JSOP_CALLNAME,  57, "callname",   NULL,         3,  0,  2, 19,  JOF_ATOM|JOF_NAME|JOF_CALLOP)
175OPDEF(JSOP_CALL,      58, "call",       NULL,         3, -1,  1, 18,  JOF_UINT16|JOF_INVOKE)
176OPDEF(JSOP_NAME,      59, "name",       NULL,         3,  0,  1, 19,  JOF_ATOM|JOF_NAME)
177OPDEF(JSOP_DOUBLE,    60, "double",     NULL,         3,  0,  1, 16,  JOF_ATOM)
178OPDEF(JSOP_STRING,    61, "string",     NULL,         3,  0,  1, 19,  JOF_ATOM)
179OPDEF(JSOP_ZERO,      62, "zero",       "0",          1,  0,  1, 16,  JOF_BYTE)
180OPDEF(JSOP_ONE,       63, "one",        "1",          1,  0,  1, 16,  JOF_BYTE)
181OPDEF(JSOP_NULL,      64, js_null_str,  js_null_str,  1,  0,  1, 19,  JOF_BYTE)
182OPDEF(JSOP_THIS,      65, js_this_str,  js_this_str,  1,  0,  1, 19,  JOF_BYTE)
183OPDEF(JSOP_FALSE,     66, js_false_str, js_false_str, 1,  0,  1, 19,  JOF_BYTE)
184OPDEF(JSOP_TRUE,      67, js_true_str,  js_true_str,  1,  0,  1, 19,  JOF_BYTE)
185OPDEF(JSOP_OR,        68, "or",         NULL,         3,  1,  0,  5,  JOF_JUMP|JOF_DETECTING|JOF_LEFTASSOC)
186OPDEF(JSOP_AND,       69, "and",        NULL,         3,  1,  0,  6,  JOF_JUMP|JOF_DETECTING|JOF_LEFTASSOC)
187
188/* The switch bytecodes have variable length. */
189OPDEF(JSOP_TABLESWITCH,  70, "tableswitch",  NULL,   -1,  1,  0,  0,  JOF_TABLESWITCH|JOF_DETECTING|JOF_PARENHEAD)
190OPDEF(JSOP_LOOKUPSWITCH, 71, "lookupswitch", NULL,   -1,  1,  0,  0,  JOF_LOOKUPSWITCH|JOF_DETECTING|JOF_PARENHEAD)
191
192/* New, infallible/transitive identity ops. */
193OPDEF(JSOP_STRICTEQ,  72, "stricteq",   "===",        1,  2,  1, 10,  JOF_BYTE|JOF_DETECTING|JOF_LEFTASSOC)
194OPDEF(JSOP_STRICTNE,  73, "strictne",   "!==",        1,  2,  1, 10,  JOF_BYTE|JOF_DETECTING|JOF_LEFTASSOC)
195
196/* Variant of JSOP_NULL for default (global) |this| parameter pushing. */
197OPDEF(JSOP_NULLTHIS,  74, js_null_str,  js_null_str,  1,  0,  1, 19,  JOF_BYTE)
198
199/*
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 */
211OPDEF(JSOP_ITER,      75, "iter",       NULL,         2,  1,  2,  0,  JOF_UINT8)
212OPDEF(JSOP_NEXTITER,  76, "nextiter",   NULL,         1,  2,  3,  0,  JOF_BYTE)
213OPDEF(JSOP_ENDITER,   77, "enditer",    NULL,         1,  2,  0,  0,  JOF_BYTE)
214
215OPDEF(JSOP_APPLY,     78, "apply",      NULL,         3, -1,  1, 18,  JOF_UINT16|JOF_INVOKE)
216OPDEF(JSOP_SWAP,      79, "swap",       NULL,         1,  2,  2,  0,  JOF_BYTE)
217
218/* Push object literal. */
219OPDEF(JSOP_OBJECT,    80, "object",     NULL,         3,  0,  1, 19,  JOF_OBJECT)
220
221/* Pop value and discard it. */
222OPDEF(JSOP_POP,       81, "pop",        NULL,         1,  1,  0,  2,  JOF_BYTE)
223
224/* Convert value to number, for unary +. */
225OPDEF(JSOP_POS,       82, "pos",        "+ ",         1,  1,  1, 15,  JOF_BYTE)
226
227/* Trap into debugger for breakpoint, etc. */
228OPDEF(JSOP_TRAP,      83, "trap",       NULL,         1,  0,  0,  0,  JOF_BYTE)
229
230/* Fast get/set ops for function arguments and local variables. */
231OPDEF(JSOP_GETARG,    84, "getarg",     NULL,         3,  0,  1, 19,  JOF_QARG |JOF_NAME)
232OPDEF(JSOP_SETARG,    85, "setarg",     NULL,         3,  1,  1,  3,  JOF_QARG |JOF_NAME|JOF_SET)
233OPDEF(JSOP_GETLOCAL,  86,"getlocal",    NULL,         3,  0,  1, 19,  JOF_LOCAL|JOF_NAME)
234OPDEF(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. */
237OPDEF(JSOP_UINT16,    88, "uint16",     NULL,         3,  0,  1, 16,  JOF_UINT16)
238
239/* Object and array literal support. */
240OPDEF(JSOP_NEWINIT,   89, "newinit",    NULL,         2,  0,  1, 19,  JOF_INT8)
241OPDEF(JSOP_ENDINIT,   90, "endinit",    NULL,         1,  0,  0, 19,  JOF_BYTE)
242OPDEF(JSOP_INITPROP,  91, "initprop",   NULL,         3,  1,  0,  3,  JOF_ATOM|JOF_PROP|JOF_SET|JOF_DETECTING)
243OPDEF(JSOP_INITELEM,  92, "initelem",   NULL,         1,  2,  0,  3,  JOF_BYTE |JOF_ELEM|JOF_SET|JOF_DETECTING)
244OPDEF(JSOP_DEFSHARP,  93, "defsharp",   NULL,         3,  0,  0,  0,  JOF_UINT16)
245OPDEF(JSOP_USESHARP,  94, "usesharp",   NULL,         3,  0,  1,  0,  JOF_UINT16)
246
247/* Fast inc/dec ops for args and locals. */
248OPDEF(JSOP_INCARG,    95, "incarg",     NULL,         3,  0,  1, 15,  JOF_QARG |JOF_NAME|JOF_INC)
249OPDEF(JSOP_DECARG,    96, "decarg",     NULL,         3,  0,  1, 15,  JOF_QARG |JOF_NAME|JOF_DEC)
250OPDEF(JSOP_ARGINC,    97, "arginc",     NULL,         3,  0,  1, 15,  JOF_QARG |JOF_NAME|JOF_INC|JOF_POST)
251OPDEF(JSOP_ARGDEC,    98, "argdec",     NULL,         3,  0,  1, 15,  JOF_QARG |JOF_NAME|JOF_DEC|JOF_POST)
252
253OPDEF(JSOP_INCLOCAL,  99, "inclocal",   NULL,         3,  0,  1, 15,  JOF_LOCAL|JOF_NAME|JOF_INC)
254OPDEF(JSOP_DECLOCAL,  100,"declocal",   NULL,         3,  0,  1, 15,  JOF_LOCAL|JOF_NAME|JOF_DEC)
255OPDEF(JSOP_LOCALINC,  101,"localinc",   NULL,         3,  0,  1, 15,  JOF_LOCAL|JOF_NAME|JOF_INC|JOF_POST)
256OPDEF(JSOP_LOCALDEC,  102,"localdec",   NULL,         3,  0,  1, 15,  JOF_LOCAL|JOF_NAME|JOF_DEC|JOF_POST)
257
258OPDEF(JSOP_IMACOP,    103,"imacop",     NULL,         1,  0,  0,  0,  JOF_BYTE)
259
260/* ECMA-compliant for/in ops. */
261OPDEF(JSOP_FORNAME,   104,"forname",    NULL,         3,  2,  2, 19,  JOF_ATOM|JOF_NAME|JOF_FOR)
262OPDEF(JSOP_FORPROP,   105,"forprop",    NULL,         3,  3,  2, 18,  JOF_ATOM|JOF_PROP|JOF_FOR)
263OPDEF(JSOP_FORELEM,   106,"forelem",    NULL,         1,  2,  3, 18,  JOF_BYTE |JOF_ELEM|JOF_FOR)
264OPDEF(JSOP_POPN,      107,"popn",       NULL,         3, -1,  0,  0,  JOF_UINT16)
265
266/* ECMA-compliant assignment ops. */
267OPDEF(JSOP_BINDNAME,  108,"bindname",   NULL,         3,  0,  1,  0,  JOF_ATOM|JOF_NAME|JOF_SET)
268OPDEF(JSOP_SETNAME,   109,"setname",    NULL,         3,  2,  1,  3,  JOF_ATOM|JOF_NAME|JOF_SET|JOF_DETECTING)
269
270/* Exception handling ops. */
271OPDEF(JSOP_THROW,     110,js_throw_str, NULL,         1,  1,  0,  0,  JOF_BYTE)
272
273/* 'in' and 'instanceof' ops. */
274OPDEF(JSOP_IN,        111,js_in_str,    js_in_str,    1,  2,  1, 11,  JOF_BYTE|JOF_LEFTASSOC)
275OPDEF(JSOP_INSTANCEOF,112,js_instanceof_str,js_instanceof_str,1,2,1,11,JOF_BYTE|JOF_LEFTASSOC)
276
277/* debugger op */
278OPDEF(JSOP_DEBUGGER,  113,"debugger",   NULL,         1,  0,  0,  0,  JOF_BYTE)
279
280/* gosub/retsub for finally handling */
281OPDEF(JSOP_GOSUB,     114,"gosub",      NULL,         3,  0,  0,  0,  JOF_JUMP)
282OPDEF(JSOP_RETSUB,    115,"retsub",     NULL,         1,  2,  0,  0,  JOF_BYTE)
283
284/* More exception handling ops. */
285OPDEF(JSOP_EXCEPTION, 116,"exception",  NULL,         1,  0,  1,  0,  JOF_BYTE)
286
287/* Embedded lineno to speedup pc->line mapping. */
288OPDEF(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 */
295OPDEF(JSOP_CONDSWITCH,118,"condswitch", NULL,         1,  0,  0,  0,  JOF_BYTE|JOF_PARENHEAD)
296OPDEF(JSOP_CASE,      119,"case",       NULL,         3,  2,  1,  0,  JOF_JUMP)
297OPDEF(JSOP_DEFAULT,   120,"default",    NULL,         3,  1,  0,  0,  JOF_JUMP)
298
299/*
300 * ECMA-compliant call to eval op
301 */
302OPDEF(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 */
307OPDEF(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 */
314OPDEF(JSOP_GETTER,    123,js_getter_str,NULL,         1,  0,  0,  0,  JOF_BYTE)
315OPDEF(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 */
320OPDEF(JSOP_DEFFUN,    125,"deffun",     NULL,         3,  0,  0,  0,  JOF_OBJECT|JOF_DECLARING)
321OPDEF(JSOP_DEFCONST,  126,"defconst",   NULL,         3,  0,  0,  0,  JOF_ATOM|JOF_DECLARING)
322OPDEF(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. */
325OPDEF(JSOP_ANONFUNOBJ,  128, "anonfunobj",  NULL,     3,  0,  1, 19,  JOF_OBJECT)
326
327/* ECMA ed. 3 named function expression. */
328OPDEF(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 */
334OPDEF(JSOP_SETLOCALPOP, 130, "setlocalpop", NULL,     3,  1,  0,  3,  JOF_LOCAL|JOF_NAME|JOF_SET)
335
336/* Parenthesization opcode to help the decompiler. */
337OPDEF(JSOP_UNUSED131,   131, "unused131",   NULL,     1,  0,  0,  0,  JOF_BYTE)
338
339/*
340 * Host object extension: given 'o.item(i) = j', the left-hand side compiles
341 * JSOP_SETCALL, rather than JSOP_CALL.
342 */
343OPDEF(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 */
349OPDEF(JSOP_TRY,         133,"try",        NULL,       1,  0,  0,  0,  JOF_BYTE)
350OPDEF(JSOP_FINALLY,     134,"finally",    NULL,       1,  0,  2,  0,  JOF_BYTE)
351
352/*
353 * Generic nop for the decompiler.
354 */
355OPDEF(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 */
362OPDEF(JSOP_ARGSUB,      136,"argsub",     NULL,       3,  0,  1, 18,  JOF_QARG |JOF_NAME)
363OPDEF(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 */
370OPDEF(JSOP_DEFLOCALFUN, 138,"deflocalfun",NULL,       5,  0,  0,  0,  JOF_SLOTOBJECT|JOF_DECLARING)
371
372/* Extended jumps. */
373OPDEF(JSOP_GOTOX,         139,"gotox",    NULL,       5,  0,  0,  0,  JOF_JUMPX)
374OPDEF(JSOP_IFEQX,         140,"ifeqx",    NULL,       5,  1,  0,  4,  JOF_JUMPX|JOF_DETECTING)
375OPDEF(JSOP_IFNEX,         141,"ifnex",    NULL,       5,  1,  0,  0,  JOF_JUMPX|JOF_PARENHEAD)
376OPDEF(JSOP_ORX,           142,"orx",      NULL,       5,  1,  0,  5,  JOF_JUMPX|JOF_DETECTING)
377OPDEF(JSOP_ANDX,          143,"andx",     NULL,       5,  1,  0,  6,  JOF_JUMPX|JOF_DETECTING)
378OPDEF(JSOP_GOSUBX,        144,"gosubx",   NULL,       5,  0,  0,  0,  JOF_JUMPX)
379OPDEF(JSOP_CASEX,         145,"casex",    NULL,       5,  2,  1,  0,  JOF_JUMPX)
380OPDEF(JSOP_DEFAULTX,      146,"defaultx", NULL,       5,  1,  0,  0,  JOF_JUMPX)
381OPDEF(JSOP_TABLESWITCHX,  147,"tableswitchx",NULL,   -1,  1,  0,  0,  JOF_TABLESWITCHX|JOF_DETECTING|JOF_PARENHEAD)
382OPDEF(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. */
385OPDEF(JSOP_BACKPATCH,     149,"backpatch",NULL,       3,  0,  0,  0,  JOF_JUMP|JOF_BACKPATCH)
386OPDEF(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. */
389OPDEF(JSOP_THROWING,      151,"throwing", NULL,       1,  1,  0,  0,  JOF_BYTE)
390
391/* Set and get return value pseudo-register in stack frame. */
392OPDEF(JSOP_SETRVAL,       152,"setrval",  NULL,       1,  1,  0,  2,  JOF_BYTE)
393OPDEF(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). */
396OPDEF(JSOP_GETGVAR,       154,"getgvar",  NULL,       3,  0,  1, 19,  JOF_ATOM|JOF_NAME)
397OPDEF(JSOP_SETGVAR,       155,"setgvar",  NULL,       3,  1,  1,  3,  JOF_ATOM|JOF_NAME|JOF_SET|JOF_DETECTING)
398OPDEF(JSOP_INCGVAR,       156,"incgvar",  NULL,       3,  0,  1, 15,  JOF_ATOM|JOF_NAME|JOF_INC|JOF_TMPSLOT2)
399OPDEF(JSOP_DECGVAR,       157,"decgvar",  NULL,       3,  0,  1, 15,  JOF_ATOM|JOF_NAME|JOF_DEC|JOF_TMPSLOT2)
400OPDEF(JSOP_GVARINC,       158,"gvarinc",  NULL,       3,  0,  1, 15,  JOF_ATOM|JOF_NAME|JOF_INC|JOF_POST|JOF_TMPSLOT2)
401OPDEF(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. */
404OPDEF(JSOP_REGEXP,        160,"regexp",   NULL,       3,  0,  1, 19,  JOF_REGEXP)
405
406/* XML (ECMA-357, a.k.a. "E4X") support. */
407OPDEF(JSOP_DEFXMLNS,      161,"defxmlns",   NULL,     1,  1,  0,  0,  JOF_BYTE)
408OPDEF(JSOP_ANYNAME,       162,"anyname",    NULL,     1,  0,  1, 19,  JOF_BYTE|JOF_XMLNAME)
409OPDEF(JSOP_QNAMEPART,     163,"qnamepart",  NULL,     3,  0,  1, 19,  JOF_ATOM|JOF_XMLNAME)
410OPDEF(JSOP_QNAMECONST,    164,"qnameconst", NULL,     3,  1,  1, 19,  JOF_ATOM|JOF_XMLNAME)
411OPDEF(JSOP_QNAME,         165,"qname",      NULL,     1,  2,  1,  0,  JOF_BYTE|JOF_XMLNAME)
412OPDEF(JSOP_TOATTRNAME,    166,"toattrname", NULL,     1,  1,  1, 19,  JOF_BYTE|JOF_XMLNAME)
413OPDEF(JSOP_TOATTRVAL,     167,"toattrval",  NULL,     1,  1,  1, 19,  JOF_BYTE)
414OPDEF(JSOP_ADDATTRNAME,   168,"addattrname",NULL,     1,  2,  1, 13,  JOF_BYTE)
415OPDEF(JSOP_ADDATTRVAL,    169,"addattrval", NULL,     1,  2,  1, 13,  JOF_BYTE)
416OPDEF(JSOP_BINDXMLNAME,   170,"bindxmlname",NULL,     1,  1,  2,  3,  JOF_BYTE|JOF_SET)
417OPDEF(JSOP_SETXMLNAME,    171,"setxmlname", NULL,     1,  3,  1,  3,  JOF_BYTE|JOF_SET|JOF_DETECTING)
418OPDEF(JSOP_XMLNAME,       172,"xmlname",    NULL,     1,  1,  1, 19,  JOF_BYTE)
419OPDEF(JSOP_DESCENDANTS,   173,"descendants",NULL,     1,  2,  1, 18,  JOF_BYTE)
420OPDEF(JSOP_FILTER,        174,"filter",     NULL,     3,  1,  1,  0,  JOF_JUMP)
421OPDEF(JSOP_ENDFILTER,     175,"endfilter",  NULL,     3,  2,  1, 18,  JOF_JUMP)
422OPDEF(JSOP_TOXML,         176,"toxml",      NULL,     1,  1,  1, 19,  JOF_BYTE)
423OPDEF(JSOP_TOXMLLIST,     177,"toxmllist",  NULL,     1,  1,  1, 19,  JOF_BYTE)
424OPDEF(JSOP_XMLTAGEXPR,    178,"xmltagexpr", NULL,     1,  1,  1,  0,  JOF_BYTE)
425OPDEF(JSOP_XMLELTEXPR,    179,"xmleltexpr", NULL,     1,  1,  1,  0,  JOF_BYTE)
426OPDEF(JSOP_XMLOBJECT,     180,"xmlobject",  NULL,     3,  0,  1, 19,  JOF_OBJECT)
427OPDEF(JSOP_XMLCDATA,      181,"xmlcdata",   NULL,     3,  0,  1, 19,  JOF_ATOM)
428OPDEF(JSOP_XMLCOMMENT,    182,"xmlcomment", NULL,     3,  0,  1, 19,  JOF_ATOM)
429OPDEF(JSOP_XMLPI,         183,"xmlpi",      NULL,     3,  1,  1, 19,  JOF_ATOM)
430OPDEF(JSOP_CALLPROP,      184,"callprop",   NULL,     3,  1,  2, 18,  JOF_ATOM|JOF_PROP|JOF_CALLOP)
431OPDEF(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 */
436OPDEF(JSOP_GETUPVAR,      186,"getupvar",   NULL,     3,  0,  1, 19,  JOF_UINT16|JOF_NAME)
437
438OPDEF(JSOP_DELDESC,       187,"deldesc",    NULL,     1,  2,  1, 15,  JOF_BYTE|JOF_ELEM|JOF_DEL)
439
440/*
441 * Opcode to hold 24-bit immediate integer operands.
442 */
443OPDEF(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 */
451OPDEF(JSOP_INDEXBASE,     189,"atombase",   NULL,     2,  0,  0,  0,  JOF_UINT8|JOF_INDEXBASE)
452OPDEF(JSOP_RESETBASE,     190,"resetbase",  NULL,     1,  0,  0,  0,  JOF_BYTE)
453OPDEF(JSOP_RESETBASE0,    191,"resetbase0", NULL,     1,  0,  0,  0,  JOF_BYTE)
454
455/*
456 * Opcodes to help the decompiler deal with XML.
457 */
458OPDEF(JSOP_STARTXML,      192,"startxml",    NULL,    1,  0,  0,  0,  JOF_BYTE)
459OPDEF(JSOP_STARTXMLEXPR,  193,"startxmlexpr",NULL,    1,  0,  0,  0,  JOF_BYTE)
460
461OPDEF(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 */
467OPDEF(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 */
473OPDEF(JSOP_GETXPROP,      196,"getxprop",    NULL,    3,  1,  1, 18,  JOF_ATOM|JOF_PROP)
474
475OPDEF(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 */
480OPDEF(JSOP_TYPEOFEXPR,    198,"typeofexpr",  NULL,    1,  1,  1, 15,  JOF_BYTE|JOF_DETECTING)
481
482/*
483 * Block-local scope support.
484 */
485OPDEF(JSOP_ENTERBLOCK,    199,"enterblock",  NULL,    3,  0, -1,  0,  JOF_OBJECT)
486OPDEF(JSOP_LEAVEBLOCK,    200,"leaveblock",  NULL,    3, -1,  0,  0,  JOF_UINT16)
487OPDEF(JSOP_UNUSED201,     201,"unused201",   NULL,    1,  0,  0,  0,  JOF_BYTE)
488OPDEF(JSOP_UNUSED202,     202,"unused202",   NULL,    1,  0,  0,  0,  JOF_BYTE)
489OPDEF(JSOP_UNUSED203,     203,"unused203",   NULL,    1,  0,  0,  0,  JOF_BYTE)
490OPDEF(JSOP_UNUSED204,     204,"unused204",   NULL,    1,  0,  0,  0,  JOF_BYTE)
491OPDEF(JSOP_UNUSED205,     205,"unused205",   NULL,    1,  0,  0,  0,  JOF_BYTE)
492OPDEF(JSOP_UNUSED206,     206,"unused206",   NULL,    1,  0,  0,  0,  JOF_BYTE)
493OPDEF(JSOP_UNUSED207,     207,"unused207",   NULL,    1,  0,  0,  0,  JOF_BYTE)
494OPDEF(JSOP_UNUSED208,     208,"unused208",   NULL,    1,  0,  0,  0,  JOF_BYTE)
495OPDEF(JSOP_UNUSED209,     209,"unused209",   NULL,    1,  0,  0,  0,  JOF_BYTE)
496
497/*
498 * Generator and array comprehension support.
499 */
500OPDEF(JSOP_GENERATOR,     210,"generator",   NULL,    1,  0,  0,  0,  JOF_BYTE)
501OPDEF(JSOP_YIELD,         211,"yield",       NULL,    1,  1,  1,  1,  JOF_BYTE)
502OPDEF(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 */
507OPDEF(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 */
512OPDEF(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 */
518OPDEF(JSOP_LEAVEBLOCKEXPR,215,"leaveblockexpr",NULL,  3, -1,  1,  3,  JOF_UINT16)
519
520/*
521 * Optimize common JSOP_{THIS,GET{ARG,LOCAL}} -> JSOP_GETPROP cliches.
522 */
523OPDEF(JSOP_GETTHISPROP,   216,"getthisprop",   NULL,  3,  0,  1, 18,  JOF_ATOM|JOF_VARPROP)
524OPDEF(JSOP_GETARGPROP,    217,"getargprop",    NULL,  5,  0,  1, 18,  JOF_SLOTATOM|JOF_VARPROP)
525OPDEF(JSOP_GETLOCALPROP,  218,"getlocalprop",  NULL,  5,  0,  1, 18,  JOF_SLOTATOM|JOF_VARPROP)
526OPDEF(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 */
532OPDEF(JSOP_INDEXBASE1,    220,"atombase1",     NULL,  1,  0,  0,  0,  JOF_BYTE |JOF_INDEXBASE)
533OPDEF(JSOP_INDEXBASE2,    221,"atombase2",     NULL,  1,  0,  0,  0,  JOF_BYTE |JOF_INDEXBASE)
534OPDEF(JSOP_INDEXBASE3,    222,"atombase3",     NULL,  1,  0,  0,  0,  JOF_BYTE |JOF_INDEXBASE)
535
536OPDEF(JSOP_CALLGVAR,      223, "callgvar",     NULL,  3,  0,  2, 19,  JOF_ATOM|JOF_NAME|JOF_CALLOP)
537OPDEF(JSOP_CALLLOCAL,     224, "calllocal",    NULL,  3,  0,  2, 19,  JOF_LOCAL|JOF_NAME|JOF_CALLOP)
538OPDEF(JSOP_CALLARG,       225, "callarg",      NULL,  3,  0,  2, 19,  JOF_QARG |JOF_NAME|JOF_CALLOP)
539OPDEF(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 */
544OPDEF(JSOP_INT8,          227, "int8",         NULL,  2,  0,  1, 16,  JOF_INT8)
545OPDEF(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 */
550OPDEF(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 */
556OPDEF(JSOP_NEWARRAY,      230, "newarray",     NULL,  4, -1,  1, 19,  JOF_UINT24)
557OPDEF(JSOP_HOLE,          231, "hole",         NULL,  1,  0,  1,  0,  JOF_BYTE)