/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- * vim: set ts=8 sw=4 et tw=0 ft=c: * * ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is Mozilla Communicator client code, released * March 31, 1998. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * * Alternatively, the contents of this file may be used under the terms of * either of the GNU General Public License Version 2 or later (the "GPL"), * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ /* * JavaScript operation bytecodes. If you need to allocate a bytecode, look * for a name of the form JSOP_UNUSED* and claim it. Otherwise, always add at * the end of the table. * * Includers must define an OPDEF macro of the following form: * * #define OPDEF(op,val,name,image,length,nuses,ndefs,prec,format) ... * * Selected arguments can be expanded in initializers. The op argument is * expanded followed by comma in the JSOp enum (jsopcode.h), e.g. The value * field must be dense for now, because jsopcode.c uses an OPDEF() expansion * inside the js_CodeSpec[] initializer. * * Field Description * op Bytecode name, which is the JSOp enumerator name * value Bytecode value, which is the JSOp enumerator value * name C string containing name for disassembler * image C string containing "image" for pretty-printer, null if ugly * length Number of bytes including any immediate operands * nuses Number of stack slots consumed by bytecode, -1 if variadic * ndefs Number of stack slots produced by bytecode, -1 if variadic * prec Operator precedence, zero if not an operator * format Bytecode plus immediate operand encoding format * * Precedence Operators Opcodes * 1 yield w JSOP_YIELD * 2 , JSOP_POP with SRC_PCDELTA, JSOP_RETURN * 3 =, +=, etc. JSOP_SETNAME, etc. (all JOF_SET); * let (...) ... and JSOP_LEAVEBLOCKEXPR * 4 ?: JSOP_IFEQ, JSOP_IFEQX * 5 || JSOP_OR, JSOP_ORX * 6 && JSOP_AND, JSOP_ANDX * 7 | JSOP_BITOR * 8 ^ JSOP_BITXOR * 9 & JSOP_BITAND * 10 ==, !=, etc. JSOP_EQ, JSOP_NE, etc. * 11 <, in, etc. JSOP_LT, JSOP_IN, etc. * 12 <<, >>, >>> JSOP_LSH, JSOP_RSH, JSOP_URSH * 13 +, -, etc. JSOP_ADD, JSOP_SUB, etc. * 14 *, /, % JSOP_MUL, JSOP_DIV, JSOP_MOD * 15 !, ~, delete, etc. JSOP_NOT, JSOP_BITNOT, JSOP_DEL*, etc. * 16 3.14, 0, etc. JSOP_DOUBLE, JSOP_ZERO, etc. * 17 new JSOP_NEW * 18 x.y, f(), etc. JSOP_GETPROP, JSOP_CALL, etc. * 19 x, null, JSOP_NAME, JSOP_NULL, etc.; * function (...) ... and JSOP_LAMBDA * * The push-numeric-constant operators, JSOP_ZERO, JSOP_DOUBLE, etc., have * lower precedence than the member operators emitted for the . operator, to * cause the decompiler to parenthesize the . left operand, e.g. (0).foo. * Otherwise the . could be taken as a decimal point. * * Let expressions are "primary" when viewed from the left, but they eat up ops * to the right as if assignment expressions and therefore have precedence 3. * This makes the decompiler retain the parentheses in (let (a=0) x) ? a : 0 * but omit the superfluous ones in (let (a=0) x), a. * * Yield expressions must be parenthesized even in comma-expressions and * argument lists, so they have the lowest precedence. * * This file is best viewed with 128 columns: 12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678 */ /* legend: op val name image len use def prec format */ /* * Generic nop for the decompiler. */ OPDEF(JSOP_NOP, 0, "nop", NULL, 1, 0, 0, 0, JOF_BYTE) /* Long-standing JavaScript bytecodes. */ OPDEF(JSOP_PUSH, 1, "push", NULL, 1, 0, 1, 0, JOF_BYTE) OPDEF(JSOP_POPV, 2, "popv", NULL, 1, 1, 0, 2, JOF_BYTE) OPDEF(JSOP_ENTERWITH, 3, "enterwith", NULL, 1, 1, 1, 0, JOF_BYTE|JOF_PARENHEAD) OPDEF(JSOP_LEAVEWITH, 4, "leavewith", NULL, 1, 1, 0, 0, JOF_BYTE) OPDEF(JSOP_RETURN, 5, "return", NULL, 1, 1, 0, 2, JOF_BYTE) OPDEF(JSOP_GOTO, 6, "goto", NULL, 3, 0, 0, 0, JOF_JUMP) OPDEF(JSOP_IFEQ, 7, "ifeq", NULL, 3, 1, 0, 4, JOF_JUMP|JOF_DETECTING) OPDEF(JSOP_IFNE, 8, "ifne", NULL, 3, 1, 0, 0, JOF_JUMP|JOF_PARENHEAD) /* Get the arguments object for the current, lightweight function activation. */ OPDEF(JSOP_ARGUMENTS, 9, js_arguments_str, js_arguments_str, 1, 0, 1, 18, JOF_BYTE) /* ECMA-compliant for-in loop with argument or local loop control. */ OPDEF(JSOP_FORARG, 10, "forarg", NULL, 3, 2, 2, 19, JOF_QARG|JOF_NAME|JOF_FOR) OPDEF(JSOP_FORLOCAL, 11, "forlocal", NULL, 3, 2, 2, 19, JOF_LOCAL|JOF_NAME|JOF_FOR) /* More long-standing bytecodes. */ OPDEF(JSOP_DUP, 12, "dup", NULL, 1, 1, 2, 0, JOF_BYTE) OPDEF(JSOP_DUP2, 13, "dup2", NULL, 1, 2, 4, 0, JOF_BYTE) OPDEF(JSOP_SETCONST, 14, "setconst", NULL, 3, 1, 1, 3, JOF_ATOM|JOF_NAME|JOF_SET) OPDEF(JSOP_BITOR, 15, "bitor", "|", 1, 2, 1, 7, JOF_BYTE|JOF_LEFTASSOC) OPDEF(JSOP_BITXOR, 16, "bitxor", "^", 1, 2, 1, 8, JOF_BYTE|JOF_LEFTASSOC) OPDEF(JSOP_BITAND, 17, "bitand", "&", 1, 2, 1, 9, JOF_BYTE|JOF_LEFTASSOC) OPDEF(JSOP_EQ, 18, "eq", "==", 1, 2, 1, 10, JOF_BYTE|JOF_LEFTASSOC|JOF_DETECTING) OPDEF(JSOP_NE, 19, "ne", "!=", 1, 2, 1, 10, JOF_BYTE|JOF_LEFTASSOC|JOF_DETECTING) OPDEF(JSOP_LT, 20, "lt", "<", 1, 2, 1, 11, JOF_BYTE|JOF_LEFTASSOC) OPDEF(JSOP_LE, 21, "le", "<=", 1, 2, 1, 11, JOF_BYTE|JOF_LEFTASSOC) OPDEF(JSOP_GT, 22, "gt", ">", 1, 2, 1, 11, JOF_BYTE|JOF_LEFTASSOC) OPDEF(JSOP_GE, 23, "ge", ">=", 1, 2, 1, 11, JOF_BYTE|JOF_LEFTASSOC) OPDEF(JSOP_LSH, 24, "lsh", "<<", 1, 2, 1, 12, JOF_BYTE|JOF_LEFTASSOC) OPDEF(JSOP_RSH, 25, "rsh", ">>", 1, 2, 1, 12, JOF_BYTE|JOF_LEFTASSOC) OPDEF(JSOP_URSH, 26, "ursh", ">>>", 1, 2, 1, 12, JOF_BYTE|JOF_LEFTASSOC) OPDEF(JSOP_ADD, 27, "add", "+", 1, 2, 1, 13, JOF_BYTE|JOF_LEFTASSOC) OPDEF(JSOP_SUB, 28, "sub", "-", 1, 2, 1, 13, JOF_BYTE|JOF_LEFTASSOC) OPDEF(JSOP_MUL, 29, "mul", "*", 1, 2, 1, 14, JOF_BYTE|JOF_LEFTASSOC) OPDEF(JSOP_DIV, 30, "div", "/", 1, 2, 1, 14, JOF_BYTE|JOF_LEFTASSOC) OPDEF(JSOP_MOD, 31, "mod", "%", 1, 2, 1, 14, JOF_BYTE|JOF_LEFTASSOC) OPDEF(JSOP_NOT, 32, "not", "!", 1, 1, 1, 15, JOF_BYTE|JOF_DETECTING) OPDEF(JSOP_BITNOT, 33, "bitnot", "~", 1, 1, 1, 15, JOF_BYTE) OPDEF(JSOP_NEG, 34, "neg", "- ", 1, 1, 1, 15, JOF_BYTE) OPDEF(JSOP_POS, 35, "pos", "+ ", 1, 1, 1, 15, JOF_BYTE) OPDEF(JSOP_DELNAME, 36, "delname", NULL, 3, 0, 1, 15, JOF_ATOM|JOF_NAME|JOF_DEL) OPDEF(JSOP_DELPROP, 37, "delprop", NULL, 3, 1, 1, 15, JOF_ATOM|JOF_PROP|JOF_DEL) OPDEF(JSOP_DELELEM, 38, "delelem", NULL, 1, 2, 1, 15, JOF_BYTE |JOF_ELEM|JOF_DEL) OPDEF(JSOP_TYPEOF, 39, js_typeof_str,NULL, 1, 1, 1, 15, JOF_BYTE|JOF_DETECTING) OPDEF(JSOP_VOID, 40, js_void_str, NULL, 1, 1, 1, 15, JOF_BYTE) OPDEF(JSOP_INCNAME, 41, "incname", NULL, 3, 0, 1, 15, JOF_ATOM|JOF_NAME|JOF_INC|JOF_TMPSLOT2) OPDEF(JSOP_INCPROP, 42, "incprop", NULL, 3, 1, 1, 15, JOF_ATOM|JOF_PROP|JOF_INC|JOF_TMPSLOT2) OPDEF(JSOP_INCELEM, 43, "incelem", NULL, 1, 2, 1, 15, JOF_BYTE |JOF_ELEM|JOF_INC|JOF_TMPSLOT2) OPDEF(JSOP_DECNAME, 44, "decname", NULL, 3, 0, 1, 15, JOF_ATOM|JOF_NAME|JOF_DEC|JOF_TMPSLOT2) OPDEF(JSOP_DECPROP, 45, "decprop", NULL, 3, 1, 1, 15, JOF_ATOM|JOF_PROP|JOF_DEC|JOF_TMPSLOT2) OPDEF(JSOP_DECELEM, 46, "decelem", NULL, 1, 2, 1, 15, JOF_BYTE |JOF_ELEM|JOF_DEC|JOF_TMPSLOT2) OPDEF(JSOP_NAMEINC, 47, "nameinc", NULL, 3, 0, 1, 15, JOF_ATOM|JOF_NAME|JOF_INC|JOF_POST|JOF_TMPSLOT2) OPDEF(JSOP_PROPINC, 48, "propinc", NULL, 3, 1, 1, 15, JOF_ATOM|JOF_PROP|JOF_INC|JOF_POST|JOF_TMPSLOT2) OPDEF(JSOP_ELEMINC, 49, "eleminc", NULL, 1, 2, 1, 15, JOF_BYTE |JOF_ELEM|JOF_INC|JOF_POST|JOF_TMPSLOT2) OPDEF(JSOP_NAMEDEC, 50, "namedec", NULL, 3, 0, 1, 15, JOF_ATOM|JOF_NAME|JOF_DEC|JOF_POST|JOF_TMPSLOT2) OPDEF(JSOP_PROPDEC, 51, "propdec", NULL, 3, 1, 1, 15, JOF_ATOM|JOF_PROP|JOF_DEC|JOF_POST|JOF_TMPSLOT2) OPDEF(JSOP_ELEMDEC, 52, "elemdec", NULL, 1, 2, 1, 15, JOF_BYTE |JOF_ELEM|JOF_DEC|JOF_POST|JOF_TMPSLOT2) OPDEF(JSOP_GETPROP, 53, "getprop", NULL, 3, 1, 1, 18, JOF_ATOM|JOF_PROP) OPDEF(JSOP_SETPROP, 54, "setprop", NULL, 3, 2, 1, 3, JOF_ATOM|JOF_PROP|JOF_SET|JOF_DETECTING) OPDEF(JSOP_GETELEM, 55, "getelem", NULL, 1, 2, 1, 18, JOF_BYTE |JOF_ELEM|JOF_LEFTASSOC) OPDEF(JSOP_SETELEM, 56, "setelem", NULL, 1, 3, 1, 3, JOF_BYTE |JOF_ELEM|JOF_SET|JOF_DETECTING) OPDEF(JSOP_CALLNAME, 57, "callname", NULL, 3, 0, 2, 19, JOF_ATOM|JOF_NAME|JOF_CALLOP) OPDEF(JSOP_CALL, 58, "call", NULL, 3, -1, 1, 18, JOF_UINT16|JOF_INVOKE) OPDEF(JSOP_NAME, 59, "name", NULL, 3, 0, 1, 19, JOF_ATOM|JOF_NAME) OPDEF(JSOP_DOUBLE, 60, "double", NULL, 3, 0, 1, 16, JOF_ATOM) OPDEF(JSOP_STRING, 61, "string", NULL, 3, 0, 1, 19, JOF_ATOM) OPDEF(JSOP_ZERO, 62, "zero", "0", 1, 0, 1, 16, JOF_BYTE) OPDEF(JSOP_ONE, 63, "one", "1", 1, 0, 1, 16, JOF_BYTE) OPDEF(JSOP_NULL, 64, js_null_str, js_null_str, 1, 0, 1, 19, JOF_BYTE) OPDEF(JSOP_THIS, 65, js_this_str, js_this_str, 1, 0, 1, 19, JOF_BYTE) OPDEF(JSOP_FALSE, 66, js_false_str, js_false_str, 1, 0, 1, 19, JOF_BYTE) OPDEF(JSOP_TRUE, 67, js_true_str, js_true_str, 1, 0, 1, 19, JOF_BYTE) OPDEF(JSOP_OR, 68, "or", NULL, 3, 1, 0, 5, JOF_JUMP|JOF_DETECTING|JOF_LEFTASSOC) OPDEF(JSOP_AND, 69, "and", NULL, 3, 1, 0, 6, JOF_JUMP|JOF_DETECTING|JOF_LEFTASSOC) /* The switch bytecodes have variable length. */ OPDEF(JSOP_TABLESWITCH, 70, "tableswitch", NULL, -1, 1, 0, 0, JOF_TABLESWITCH|JOF_DETECTING|JOF_PARENHEAD) OPDEF(JSOP_LOOKUPSWITCH, 71, "lookupswitch", NULL, -1, 1, 0, 0, JOF_LOOKUPSWITCH|JOF_DETECTING|JOF_PARENHEAD) /* New, infallible/transitive identity ops. */ OPDEF(JSOP_STRICTEQ, 72, "stricteq", "===", 1, 2, 1, 10, JOF_BYTE|JOF_DETECTING|JOF_LEFTASSOC) OPDEF(JSOP_STRICTNE, 73, "strictne", "!==", 1, 2, 1, 10, JOF_BYTE|JOF_DETECTING|JOF_LEFTASSOC) /* * Host object extension: given 'o.item(i) = j', the left-hand side compiles * JSOP_SETCALL, rather than JSOP_CALL. */ OPDEF(JSOP_SETCALL, 74, "setcall", NULL, 3, -1, 2, 18, JOF_UINT16|JOF_SET) /* * JSOP_ITER sets up a for-in or for-each-in loop using the JSITER_* flag bits * in this op's uint8 immediate operand. It replaces the top of stack object * with an iterator for that object, and pushes a slot used by JSOP_NEXTITER. * * JSOP_NEXTITER stores the next iterated value in the top of stack slot which * was allocated by JSOP_ITER and pushes true, or stores JSVAL_HOLE and pushes * false. It is followed immediately by JSOP_IFNE{,X}. * * JSOP_ENDITER cleans up after the loop. It uses the slot above the iterator * for temporary GC rooting. */ OPDEF(JSOP_ITER, 75, "iter", NULL, 2, 1, 2, 0, JOF_UINT8) OPDEF(JSOP_NEXTITER, 76, "nextiter", NULL, 1, 2, 3, 0, JOF_BYTE) OPDEF(JSOP_ENDITER, 77, "enditer", NULL, 1, 2, 0, 0, JOF_BYTE) OPDEF(JSOP_APPLY, 78, "apply", NULL, 3, -1, 1, 18, JOF_UINT16|JOF_INVOKE) OPDEF(JSOP_SWAP, 79, "swap", NULL, 1, 2, 2, 0, JOF_BYTE) /* Push object literal. */ OPDEF(JSOP_OBJECT, 80, "object", NULL, 3, 0, 1, 19, JOF_OBJECT) /* Pop value and discard it. */ OPDEF(JSOP_POP, 81, "pop", NULL, 1, 1, 0, 2, JOF_BYTE) /* Convert value to number, for unary +. */ OPDEF(JSOP_NEW, 82, js_new_str, NULL, 3, -1, 1, 17, JOF_UINT16|JOF_INVOKE) /* Trap into debugger for breakpoint, etc. */ OPDEF(JSOP_TRAP, 83, "trap", NULL, 1, 0, 0, 0, JOF_BYTE) /* Fast get/set ops for function arguments and local variables. */ OPDEF(JSOP_GETARG, 84, "getarg", NULL, 3, 0, 1, 19, JOF_QARG |JOF_NAME) OPDEF(JSOP_SETARG, 85, "setarg", NULL, 3, 1, 1, 3, JOF_QARG |JOF_NAME|JOF_SET) OPDEF(JSOP_GETLOCAL, 86,"getlocal", NULL, 3, 0, 1, 19, JOF_LOCAL|JOF_NAME) OPDEF(JSOP_SETLOCAL, 87,"setlocal", NULL, 3, 1, 1, 3, JOF_LOCAL|JOF_NAME|JOF_SET|JOF_DETECTING) /* Push unsigned 16-bit int constant. */ OPDEF(JSOP_UINT16, 88, "uint16", NULL, 3, 0, 1, 16, JOF_UINT16) /* Object and array literal support. */ OPDEF(JSOP_NEWINIT, 89, "newinit", NULL, 2, 0, 1, 19, JOF_INT8) OPDEF(JSOP_ENDINIT, 90, "endinit", NULL, 1, 0, 0, 19, JOF_BYTE) OPDEF(JSOP_INITPROP, 91, "initprop", NULL, 3, 1, 0, 3, JOF_ATOM|JOF_PROP|JOF_SET|JOF_DETECTING) OPDEF(JSOP_INITELEM, 92, "initelem", NULL, 1, 2, 0, 3, JOF_BYTE |JOF_ELEM|JOF_SET|JOF_DETECTING) OPDEF(JSOP_DEFSHARP, 93, "defsharp", NULL, 3, 0, 0, 0, JOF_UINT16) OPDEF(JSOP_USESHARP, 94, "usesharp", NULL, 3, 0, 1, 0, JOF_UINT16) /* Fast inc/dec ops for args and locals. */ OPDEF(JSOP_INCARG, 95, "incarg", NULL, 3, 0, 1, 15, JOF_QARG |JOF_NAME|JOF_INC) OPDEF(JSOP_DECARG, 96, "decarg", NULL, 3, 0, 1, 15, JOF_QARG |JOF_NAME|JOF_DEC) OPDEF(JSOP_ARGINC, 97, "arginc", NULL, 3, 0, 1, 15, JOF_QARG |JOF_NAME|JOF_INC|JOF_POST) OPDEF(JSOP_ARGDEC, 98, "argdec", NULL, 3, 0, 1, 15, JOF_QARG |JOF_NAME|JOF_DEC|JOF_POST) OPDEF(JSOP_INCLOCAL, 99, "inclocal", NULL, 3, 0, 1, 15, JOF_LOCAL|JOF_NAME|JOF_INC) OPDEF(JSOP_DECLOCAL, 100,"declocal", NULL, 3, 0, 1, 15, JOF_LOCAL|JOF_NAME|JOF_DEC) OPDEF(JSOP_LOCALINC, 101,"localinc", NULL, 3, 0, 1, 15, JOF_LOCAL|JOF_NAME|JOF_INC|JOF_POST) OPDEF(JSOP_LOCALDEC, 102,"localdec", NULL, 3, 0, 1, 15, JOF_LOCAL|JOF_NAME|JOF_DEC|JOF_POST) OPDEF(JSOP_IMACOP, 103,"imacop", NULL, 1, 0, 0, 0, JOF_BYTE) /* ECMA-compliant for/in ops. */ OPDEF(JSOP_FORNAME, 104,"forname", NULL, 3, 2, 2, 19, JOF_ATOM|JOF_NAME|JOF_FOR) OPDEF(JSOP_FORPROP, 105,"forprop", NULL, 3, 3, 2, 18, JOF_ATOM|JOF_PROP|JOF_FOR) OPDEF(JSOP_FORELEM, 106,"forelem", NULL, 1, 2, 3, 18, JOF_BYTE |JOF_ELEM|JOF_FOR) OPDEF(JSOP_POPN, 107,"popn", NULL, 3, -1, 0, 0, JOF_UINT16) /* ECMA-compliant assignment ops. */ OPDEF(JSOP_BINDNAME, 108,"bindname", NULL, 3, 0, 1, 0, JOF_ATOM|JOF_NAME|JOF_SET) OPDEF(JSOP_SETNAME, 109,"setname", NULL, 3, 2, 1, 3, JOF_ATOM|JOF_NAME|JOF_SET|JOF_DETECTING) /* Exception handling ops. */ OPDEF(JSOP_THROW, 110,js_throw_str, NULL, 1, 1, 0, 0, JOF_BYTE) /* 'in' and 'instanceof' ops. */ OPDEF(JSOP_IN, 111,js_in_str, js_in_str, 1, 2, 1, 11, JOF_BYTE|JOF_LEFTASSOC) OPDEF(JSOP_INSTANCEOF,112,js_instanceof_str,js_instanceof_str,1,2,1,11,JOF_BYTE|JOF_LEFTASSOC) /* debugger op */ OPDEF(JSOP_DEBUGGER, 113,"debugger", NULL, 1, 0, 0, 0, JOF_BYTE) /* gosub/retsub for finally handling */ OPDEF(JSOP_GOSUB, 114,"gosub", NULL, 3, 0, 0, 0, JOF_JUMP) OPDEF(JSOP_RETSUB, 115,"retsub", NULL, 1, 2, 0, 0, JOF_BYTE) /* More exception handling ops. */ OPDEF(JSOP_EXCEPTION, 116,"exception", NULL, 1, 0, 1, 0, JOF_BYTE) /* Embedded lineno to speedup pc->line mapping. */ OPDEF(JSOP_LINENO, 117,"lineno", NULL, 3, 0, 0, 0, JOF_UINT16) /* * ECMA-compliant switch statement ops. * CONDSWITCH is a decompilable NOP; CASE is ===, POP, jump if true, re-push * lval if false; and DEFAULT is POP lval and GOTO. */ OPDEF(JSOP_CONDSWITCH,118,"condswitch", NULL, 1, 0, 0, 0, JOF_BYTE|JOF_PARENHEAD) OPDEF(JSOP_CASE, 119,"case", NULL, 3, 2, 1, 0, JOF_JUMP) OPDEF(JSOP_DEFAULT, 120,"default", NULL, 3, 1, 0, 0, JOF_JUMP) /* * ECMA-compliant call to eval op */ OPDEF(JSOP_EVAL, 121,"eval", NULL, 3, -1, 1, 18, JOF_UINT16|JOF_INVOKE) /* * ECMA-compliant helper for 'for (x[i] in o)' loops. */ OPDEF(JSOP_ENUMELEM, 122,"enumelem", NULL, 1, 3, 0, 3, JOF_BYTE |JOF_SET) /* * Getter and setter prefix bytecodes. These modify the next bytecode, either * an assignment or a property initializer code, which then defines a property * getter or setter. */ OPDEF(JSOP_GETTER, 123,js_getter_str,NULL, 1, 0, 0, 0, JOF_BYTE) OPDEF(JSOP_SETTER, 124,js_setter_str,NULL, 1, 0, 0, 0, JOF_BYTE) /* * Prolog bytecodes for defining function, var, and const names. */ OPDEF(JSOP_DEFFUN, 125,"deffun", NULL, 3, 0, 0, 0, JOF_OBJECT|JOF_DECLARING) OPDEF(JSOP_DEFCONST, 126,"defconst", NULL, 3, 0, 0, 0, JOF_ATOM|JOF_DECLARING) OPDEF(JSOP_DEFVAR, 127,"defvar", NULL, 3, 0, 0, 0, JOF_ATOM|JOF_DECLARING) /* Push a closure for a named or anonymous function expression. */ OPDEF(JSOP_LAMBDA, 128, "lambda", NULL, 3, 0, 1, 19, JOF_OBJECT) /* Used for named function expression self-naming, if lightweight. */ OPDEF(JSOP_CALLEE, 129, "callee", NULL, 1, 0, 1, 19, JOF_BYTE) /* * Like JSOP_SETLOCAL, but specialized to avoid requiring JSOP_POP immediately * after to throw away the exception value. */ OPDEF(JSOP_SETLOCALPOP, 130, "setlocalpop", NULL, 3, 1, 0, 3, JOF_LOCAL|JOF_NAME|JOF_SET) /* Pick an element from the stack. */ OPDEF(JSOP_PICK, 131, "pick", NULL, 2, 0, 0, 0, JOF_UINT8) /* * Exception handling no-op, for more economical byte-coding than SRC_TRYFIN * srcnote-annotated JSOP_NOPs and to simply stack balance handling. */ OPDEF(JSOP_TRY, 132,"try", NULL, 1, 0, 0, 0, JOF_BYTE) OPDEF(JSOP_FINALLY, 133,"finally", NULL, 1, 0, 2, 0, JOF_BYTE) /* * Get a dynamic slot from an object known to have at least one greater than * the slot index number of values at obj->dslots. The CALL variant computes * the callee and this-object in preparation for a JSOP_CALL. */ OPDEF(JSOP_GETDSLOT, 134,"getdslot", NULL, 3, 0, 1, 19, JOF_UINT16|JOF_NAME) OPDEF(JSOP_CALLDSLOT, 135,"calldslot", NULL, 3, 0, 2, 19, JOF_UINT16|JOF_NAME|JOF_CALLOP) /* * Bytecodes that avoid making an arguments object in most cases: * JSOP_ARGSUB gets arguments[i] from fp->argv, iff i is in [0, fp->argc-1]. * JSOP_ARGCNT returns fp->argc. */ OPDEF(JSOP_ARGSUB, 136,"argsub", NULL, 3, 0, 1, 18, JOF_QARG |JOF_NAME) OPDEF(JSOP_ARGCNT, 137,"argcnt", NULL, 1, 0, 1, 18, JOF_BYTE) /* * Define a local function object as a local variable. * The local variable's slot number is the first immediate two-byte operand. * The function object's atom index is the second immediate operand. */ OPDEF(JSOP_DEFLOCALFUN, 138,"deflocalfun",NULL, 5, 0, 0, 0, JOF_SLOTOBJECT|JOF_DECLARING) /* Extended jumps. */ OPDEF(JSOP_GOTOX, 139,"gotox", NULL, 5, 0, 0, 0, JOF_JUMPX) OPDEF(JSOP_IFEQX, 140,"ifeqx", NULL, 5, 1, 0, 4, JOF_JUMPX|JOF_DETECTING) OPDEF(JSOP_IFNEX, 141,"ifnex", NULL, 5, 1, 0, 0, JOF_JUMPX|JOF_PARENHEAD) OPDEF(JSOP_ORX, 142,"orx", NULL, 5, 1, 0, 5, JOF_JUMPX|JOF_DETECTING) OPDEF(JSOP_ANDX, 143,"andx", NULL, 5, 1, 0, 6, JOF_JUMPX|JOF_DETECTING) OPDEF(JSOP_GOSUBX, 144,"gosubx", NULL, 5, 0, 0, 0, JOF_JUMPX) OPDEF(JSOP_CASEX, 145,"casex", NULL, 5, 2, 1, 0, JOF_JUMPX) OPDEF(JSOP_DEFAULTX, 146,"defaultx", NULL, 5, 1, 0, 0, JOF_JUMPX) OPDEF(JSOP_TABLESWITCHX, 147,"tableswitchx",NULL, -1, 1, 0, 0, JOF_TABLESWITCHX|JOF_DETECTING|JOF_PARENHEAD) OPDEF(JSOP_LOOKUPSWITCHX, 148,"lookupswitchx",NULL, -1, 1, 0, 0, JOF_LOOKUPSWITCHX|JOF_DETECTING|JOF_PARENHEAD) /* Placeholders for a real jump opcode set during backpatch chain fixup. */ OPDEF(JSOP_BACKPATCH, 149,"backpatch",NULL, 3, 0, 0, 0, JOF_JUMP|JOF_BACKPATCH) OPDEF(JSOP_BACKPATCH_POP, 150,"backpatch_pop",NULL, 3, 1, 0, 0, JOF_JUMP|JOF_BACKPATCH) /* Set pending exception from the stack, to trigger rethrow. */ OPDEF(JSOP_THROWING, 151,"throwing", NULL, 1, 1, 0, 0, JOF_BYTE) /* Set and get return value pseudo-register in stack frame. */ OPDEF(JSOP_SETRVAL, 152,"setrval", NULL, 1, 1, 0, 2, JOF_BYTE) OPDEF(JSOP_RETRVAL, 153,"retrval", NULL, 1, 0, 0, 0, JOF_BYTE) /* Optimized global variable ops (we don't bother doing a JSOP_FORGVAR op). */ OPDEF(JSOP_GETGVAR, 154,"getgvar", NULL, 3, 0, 1, 19, JOF_ATOM|JOF_NAME) OPDEF(JSOP_SETGVAR, 155,"setgvar", NULL, 3, 1, 1, 3, JOF_ATOM|JOF_NAME|JOF_SET|JOF_DETECTING) OPDEF(JSOP_INCGVAR, 156,"incgvar", NULL, 3, 0, 1, 15, JOF_ATOM|JOF_NAME|JOF_INC|JOF_TMPSLOT2) OPDEF(JSOP_DECGVAR, 157,"decgvar", NULL, 3, 0, 1, 15, JOF_ATOM|JOF_NAME|JOF_DEC|JOF_TMPSLOT2) OPDEF(JSOP_GVARINC, 158,"gvarinc", NULL, 3, 0, 1, 15, JOF_ATOM|JOF_NAME|JOF_INC|JOF_POST|JOF_TMPSLOT2) OPDEF(JSOP_GVARDEC, 159,"gvardec", NULL, 3, 0, 1, 15, JOF_ATOM|JOF_NAME|JOF_DEC|JOF_POST|JOF_TMPSLOT2) /* Regular expression literal requiring special "fork on exec" handling. */ OPDEF(JSOP_REGEXP, 160,"regexp", NULL, 3, 0, 1, 19, JOF_REGEXP) /* XML (ECMA-357, a.k.a. "E4X") support. */ OPDEF(JSOP_DEFXMLNS, 161,"defxmlns", NULL, 1, 1, 0, 0, JOF_BYTE) OPDEF(JSOP_ANYNAME, 162,"anyname", NULL, 1, 0, 1, 19, JOF_BYTE|JOF_XMLNAME) OPDEF(JSOP_QNAMEPART, 163,"qnamepart", NULL, 3, 0, 1, 19, JOF_ATOM|JOF_XMLNAME) OPDEF(JSOP_QNAMECONST, 164,"qnameconst", NULL, 3, 1, 1, 19, JOF_ATOM|JOF_XMLNAME) OPDEF(JSOP_QNAME, 165,"qname", NULL, 1, 2, 1, 0, JOF_BYTE|JOF_XMLNAME) OPDEF(JSOP_TOATTRNAME, 166,"toattrname", NULL, 1, 1, 1, 19, JOF_BYTE|JOF_XMLNAME) OPDEF(JSOP_TOATTRVAL, 167,"toattrval", NULL, 1, 1, 1, 19, JOF_BYTE) OPDEF(JSOP_ADDATTRNAME, 168,"addattrname",NULL, 1, 2, 1, 13, JOF_BYTE) OPDEF(JSOP_ADDATTRVAL, 169,"addattrval", NULL, 1, 2, 1, 13, JOF_BYTE) OPDEF(JSOP_BINDXMLNAME, 170,"bindxmlname",NULL, 1, 1, 2, 3, JOF_BYTE|JOF_SET) OPDEF(JSOP_SETXMLNAME, 171,"setxmlname", NULL, 1, 3, 1, 3, JOF_BYTE|JOF_SET|JOF_DETECTING) OPDEF(JSOP_XMLNAME, 172,"xmlname", NULL, 1, 1, 1, 19, JOF_BYTE) OPDEF(JSOP_DESCENDANTS, 173,"descendants",NULL, 1, 2, 1, 18, JOF_BYTE) OPDEF(JSOP_FILTER, 174,"filter", NULL, 3, 1, 1, 0, JOF_JUMP) OPDEF(JSOP_ENDFILTER, 175,"endfilter", NULL, 3, 2, 1, 18, JOF_JUMP) OPDEF(JSOP_TOXML, 176,"toxml", NULL, 1, 1, 1, 19, JOF_BYTE) OPDEF(JSOP_TOXMLLIST, 177,"toxmllist", NULL, 1, 1, 1, 19, JOF_BYTE) OPDEF(JSOP_XMLTAGEXPR, 178,"xmltagexpr", NULL, 1, 1, 1, 0, JOF_BYTE) OPDEF(JSOP_XMLELTEXPR, 179,"xmleltexpr", NULL, 1, 1, 1, 0, JOF_BYTE) OPDEF(JSOP_XMLOBJECT, 180,"xmlobject", NULL, 3, 0, 1, 19, JOF_OBJECT) OPDEF(JSOP_XMLCDATA, 181,"xmlcdata", NULL, 3, 0, 1, 19, JOF_ATOM) OPDEF(JSOP_XMLCOMMENT, 182,"xmlcomment", NULL, 3, 0, 1, 19, JOF_ATOM) OPDEF(JSOP_XMLPI, 183,"xmlpi", NULL, 3, 1, 1, 19, JOF_ATOM) OPDEF(JSOP_CALLPROP, 184,"callprop", NULL, 3, 1, 2, 18, JOF_ATOM|JOF_PROP|JOF_CALLOP) /* * Get a display (free) variable from the closure's reserved slots. */ OPDEF(JSOP_GETUPVAR, 185,"getupvar", NULL, 3, 0, 1, 19, JOF_UINT16|JOF_NAME) OPDEF(JSOP_CALLUPVAR, 186,"callupvar", NULL, 3, 0, 2, 19, JOF_UINT16|JOF_NAME|JOF_CALLOP) OPDEF(JSOP_DELDESC, 187,"deldesc", NULL, 1, 2, 1, 15, JOF_BYTE|JOF_ELEM|JOF_DEL) /* * Opcode to hold 24-bit immediate integer operands. */ OPDEF(JSOP_UINT24, 188,"uint24", NULL, 4, 0, 1, 16, JOF_UINT24) /* * Opcodes to allow 24-bit atom or object indexes. Whenever an index exceeds * the 16-bit limit, the index-accessing bytecode must be bracketed by * JSOP_INDEXBASE and JSOP_RESETBASE to provide the upper bits of the index. * See jsemit.c, EmitIndexOp. */ OPDEF(JSOP_INDEXBASE, 189,"atombase", NULL, 2, 0, 0, 0, JOF_UINT8|JOF_INDEXBASE) OPDEF(JSOP_RESETBASE, 190,"resetbase", NULL, 1, 0, 0, 0, JOF_BYTE) OPDEF(JSOP_RESETBASE0, 191,"resetbase0", NULL, 1, 0, 0, 0, JOF_BYTE) /* * Opcodes to help the decompiler deal with XML. */ OPDEF(JSOP_STARTXML, 192,"startxml", NULL, 1, 0, 0, 0, JOF_BYTE) OPDEF(JSOP_STARTXMLEXPR, 193,"startxmlexpr",NULL, 1, 0, 0, 0, JOF_BYTE) OPDEF(JSOP_CALLELEM, 194, "callelem", NULL, 1, 2, 2, 18, JOF_BYTE |JOF_ELEM|JOF_LEFTASSOC|JOF_CALLOP) /* * Stop interpretation, emitted at end of script to save the threaded bytecode * interpreter an extra branch test on every DO_NEXT_OP (see jsinterp.c). */ OPDEF(JSOP_STOP, 195,"stop", NULL, 1, 0, 0, 0, JOF_BYTE) /* * Get an extant property value, throwing ReferenceError if the identified * property does not exist. */ OPDEF(JSOP_GETXPROP, 196,"getxprop", NULL, 3, 1, 1, 18, JOF_ATOM|JOF_PROP) OPDEF(JSOP_CALLXMLNAME, 197, "callxmlname", NULL, 1, 1, 2, 19, JOF_BYTE|JOF_CALLOP) /* * Specialized JSOP_TYPEOF to avoid reporting undefined for typeof(0, undef). */ OPDEF(JSOP_TYPEOFEXPR, 198,"typeofexpr", NULL, 1, 1, 1, 15, JOF_BYTE|JOF_DETECTING) /* * Block-local scope support. */ OPDEF(JSOP_ENTERBLOCK, 199,"enterblock", NULL, 3, 0, -1, 0, JOF_OBJECT) OPDEF(JSOP_LEAVEBLOCK, 200,"leaveblock", NULL, 3, -1, 0, 0, JOF_UINT16) /* Jump to target if top of stack value is of primitive type. */ OPDEF(JSOP_IFPRIMTOP, 201,"ifprimtop", NULL, 3, 1, 1, 0, JOF_JUMP|JOF_DETECTING) /* Throws a TypeError if the value at the top of the stack is not primitive. */ OPDEF(JSOP_PRIMTOP, 202,"primtop", NULL, 2, 1, 1, 0, JOF_INT8) /* * Generator and array comprehension support. */ OPDEF(JSOP_GENERATOR, 203,"generator", NULL, 1, 0, 0, 0, JOF_BYTE) OPDEF(JSOP_YIELD, 204,"yield", NULL, 1, 1, 1, 1, JOF_BYTE) OPDEF(JSOP_ARRAYPUSH, 205,"arraypush", NULL, 3, 1, 0, 3, JOF_LOCAL) /* * Get the built-in function::foo namespace and push it. */ OPDEF(JSOP_GETFUNNS, 206,"getfunns", NULL, 1, 0, 1, 19, JOF_BYTE) /* * Variant of JSOP_ENUMELEM for destructuring const (const [a, b] = ...). */ OPDEF(JSOP_ENUMCONSTELEM, 207,"enumconstelem",NULL, 1, 3, 0, 3, JOF_BYTE|JOF_SET) /* * Variant of JSOP_LEAVEBLOCK has a result on the stack above the locals, * which must be moved down when the block pops. */ OPDEF(JSOP_LEAVEBLOCKEXPR,208,"leaveblockexpr",NULL, 3, -1, 1, 3, JOF_UINT16) /* * Optimize common JSOP_{THIS,GET{ARG,LOCAL}} -> JSOP_GETPROP cliches. */ OPDEF(JSOP_GETTHISPROP, 209,"getthisprop", NULL, 3, 0, 1, 18, JOF_ATOM|JOF_VARPROP) OPDEF(JSOP_GETARGPROP, 210,"getargprop", NULL, 5, 0, 1, 18, JOF_SLOTATOM|JOF_VARPROP) OPDEF(JSOP_GETLOCALPROP, 211,"getlocalprop", NULL, 5, 0, 1, 18, JOF_SLOTATOM|JOF_VARPROP) /* * Optimize atom segments 1-3. These must be followed by JSOP_RESETBASE0 after * the opcode that they prefix. */ OPDEF(JSOP_INDEXBASE1, 212,"atombase1", NULL, 1, 0, 0, 0, JOF_BYTE |JOF_INDEXBASE) OPDEF(JSOP_INDEXBASE2, 213,"atombase2", NULL, 1, 0, 0, 0, JOF_BYTE |JOF_INDEXBASE) OPDEF(JSOP_INDEXBASE3, 214,"atombase3", NULL, 1, 0, 0, 0, JOF_BYTE |JOF_INDEXBASE) OPDEF(JSOP_CALLGVAR, 215, "callgvar", NULL, 3, 0, 2, 19, JOF_ATOM|JOF_NAME|JOF_CALLOP) OPDEF(JSOP_CALLLOCAL, 216, "calllocal", NULL, 3, 0, 2, 19, JOF_LOCAL|JOF_NAME|JOF_CALLOP) OPDEF(JSOP_CALLARG, 217, "callarg", NULL, 3, 0, 2, 19, JOF_QARG |JOF_NAME|JOF_CALLOP) OPDEF(JSOP_CALLBUILTIN, 218, "callbuiltin", NULL, 3, 1, 2, 0, JOF_UINT16) /* * Opcodes to hold 8-bit and 32-bit immediate integer operands. */ OPDEF(JSOP_INT8, 219, "int8", NULL, 2, 0, 1, 16, JOF_INT8) OPDEF(JSOP_INT32, 220, "int32", NULL, 5, 0, 1, 16, JOF_INT32) /* * Get the value of the 'length' property from a stacked object. */ OPDEF(JSOP_LENGTH, 221, "length", NULL, 1, 1, 1, 18, JOF_BYTE|JOF_PROP) /* * Construct a new dense array whose contents are the values provided on the * stack, consuming those values and replacing them with the newly-constructed * array. The topmost value is the last value in the new array, and the * bottommost value is the first value in the array; the array length is a * 16-bit immediate operand to the instruction. */ OPDEF(JSOP_NEWARRAY, 222, "newarray", NULL, 3, -1, 1, 19, JOF_UINT16) /* * Push a JSVAL_HOLE value onto the stack, representing an omitted property in * an array literal (e.g. property 0 in the array [, 1]). This opcode is used * with the JSOP_NEWARRAY and JSOP_NEWINIT opcodes. */ OPDEF(JSOP_HOLE, 223, "hole", NULL, 1, 0, 1, 0, JOF_BYTE) /* * Variants of JSOP_{DEF{,LOCAL}FUN,LAMBDA} optimized for the flat closure case. */ OPDEF(JSOP_DEFFUN_FC, 224,"deffun_fc", NULL, 3, 0, 0, 0, JOF_OBJECT|JOF_DECLARING) OPDEF(JSOP_DEFLOCALFUN_FC,225,"deflocalfun_fc",NULL, 5, 0, 0, 0, JOF_SLOTOBJECT|JOF_DECLARING) OPDEF(JSOP_LAMBDA_FC, 226,"lambda_fc", NULL, 3, 0, 1, 19, JOF_OBJECT) /* * Ensure that the value on the top of the stack is an object. The one * argument is an error message, defined in js.msg, that takes one parameter * (the decompilation of the primitive value). */ OPDEF(JSOP_OBJTOP, 227,"objtop", NULL, 3, 0, 0, 0, JOF_UINT16) OPDEF(JSOP_TRACE, 228, "trace", NULL, 1, 0, 0, 0, JOF_BYTE) /* * Debugger versions of JSOP_{GET,CALL}UPVAR. */ OPDEF(JSOP_GETUPVAR_DBG, 229,"getupvar_dbg", NULL, 3, 0, 1, 19, JOF_UINT16|JOF_NAME) OPDEF(JSOP_CALLUPVAR_DBG, 230,"callupvar_dbg", NULL, 3, 0, 2, 19, JOF_UINT16|JOF_NAME|JOF_CALLOP) OPDEF(JSOP_DEFFUN_DBGFC, 231,"deffun_dbgfc", NULL, 3, 0, 0, 0, JOF_OBJECT|JOF_DECLARING) OPDEF(JSOP_DEFLOCALFUN_DBGFC,232,"deflocalfun_dbgfc",NULL, 5, 0, 0, 0, JOF_SLOTOBJECT|JOF_DECLARING) OPDEF(JSOP_LAMBDA_DBGFC, 233,"lambda_dbgfc", NULL, 3, 0, 1, 19, JOF_OBJECT) /* * Concatenate N values, coercing to string if necessary, where N is concatn's * immediate. See record_JSOP_CONCATN for recording behavior. */ OPDEF(JSOP_CONCATN, 234,"concatn", NULL, 3, -1, 1, 13, JOF_UINT16|JOF_TMPSLOT2)