https://github.com/mozilla/gecko-dev
Tip revision: 4734d8433937fe568aa29a492809dc164e7db378 authored by Aki Sasaki on 31 January 2014, 23:05:00 UTC
Bug 960571 - Talos https://hg.mozilla.org. r=jgriffin, a=test-only
Bug 960571 - Talos https://hg.mozilla.org. r=jgriffin, a=test-only
Tip revision: 4734d84
jsopcode.tbl
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=8 sw=4 et tw=0 ft=c:
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* 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.
*
* When changing the bytecode, don't forget to update XDR_BYTECODE_VERSION in
* vm/Xdr.h!
*
* 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
* format Bytecode plus immediate operand encoding format
*
* This file is best viewed with 128 columns:
12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
*/
/* legend: op val name image len use def format */
/*
* Generic nop for the decompiler.
*/
OPDEF(JSOP_NOP, 0, "nop", NULL, 1, 0, 0, JOF_BYTE)
/* Long-standing JavaScript bytecodes. */
OPDEF(JSOP_UNDEFINED, 1, js_undefined_str, "", 1, 0, 1, JOF_BYTE)
OPDEF(JSOP_POPV, 2, "popv", NULL, 1, 1, 0, JOF_BYTE)
OPDEF(JSOP_ENTERWITH, 3, "enterwith", NULL, 1, 1, 1, JOF_BYTE)
OPDEF(JSOP_LEAVEWITH, 4, "leavewith", NULL, 1, 1, 0, JOF_BYTE)
OPDEF(JSOP_RETURN, 5, "return", NULL, 1, 1, 0, JOF_BYTE)
OPDEF(JSOP_GOTO, 6, "goto", NULL, 5, 0, 0, JOF_JUMP)
OPDEF(JSOP_IFEQ, 7, "ifeq", NULL, 5, 1, 0, JOF_JUMP|JOF_DETECTING)
OPDEF(JSOP_IFNE, 8, "ifne", NULL, 5, 1, 0, JOF_JUMP)
/* Get the arguments object for the current, lightweight function activation. */
OPDEF(JSOP_ARGUMENTS, 9, "arguments", NULL, 1, 0, 1, JOF_BYTE)
OPDEF(JSOP_SWAP, 10, "swap", NULL, 1, 2, 2, JOF_BYTE)
OPDEF(JSOP_POPN, 11, "popn", NULL, 3, -1, 0, JOF_UINT16)
/* More long-standing bytecodes. */
OPDEF(JSOP_DUP, 12, "dup", NULL, 1, 1, 2, JOF_BYTE)
OPDEF(JSOP_DUP2, 13, "dup2", NULL, 1, 2, 4, JOF_BYTE)
OPDEF(JSOP_SETCONST, 14, "setconst", NULL, 5, 1, 1, JOF_ATOM|JOF_NAME|JOF_SET)
OPDEF(JSOP_BITOR, 15, "bitor", "|", 1, 2, 1, JOF_BYTE|JOF_LEFTASSOC|JOF_ARITH)
OPDEF(JSOP_BITXOR, 16, "bitxor", "^", 1, 2, 1, JOF_BYTE|JOF_LEFTASSOC|JOF_ARITH)
OPDEF(JSOP_BITAND, 17, "bitand", "&", 1, 2, 1, JOF_BYTE|JOF_LEFTASSOC|JOF_ARITH)
OPDEF(JSOP_EQ, 18, "eq", "==", 1, 2, 1, JOF_BYTE|JOF_LEFTASSOC|JOF_ARITH|JOF_DETECTING)
OPDEF(JSOP_NE, 19, "ne", "!=", 1, 2, 1, JOF_BYTE|JOF_LEFTASSOC|JOF_ARITH|JOF_DETECTING)
OPDEF(JSOP_LT, 20, "lt", "<", 1, 2, 1, JOF_BYTE|JOF_LEFTASSOC|JOF_ARITH)
OPDEF(JSOP_LE, 21, "le", "<=", 1, 2, 1, JOF_BYTE|JOF_LEFTASSOC|JOF_ARITH)
OPDEF(JSOP_GT, 22, "gt", ">", 1, 2, 1, JOF_BYTE|JOF_LEFTASSOC|JOF_ARITH)
OPDEF(JSOP_GE, 23, "ge", ">=", 1, 2, 1, JOF_BYTE|JOF_LEFTASSOC|JOF_ARITH)
OPDEF(JSOP_LSH, 24, "lsh", "<<", 1, 2, 1, JOF_BYTE|JOF_LEFTASSOC|JOF_ARITH)
OPDEF(JSOP_RSH, 25, "rsh", ">>", 1, 2, 1, JOF_BYTE|JOF_LEFTASSOC|JOF_ARITH)
OPDEF(JSOP_URSH, 26, "ursh", ">>>", 1, 2, 1, JOF_BYTE|JOF_LEFTASSOC|JOF_ARITH)
OPDEF(JSOP_ADD, 27, "add", "+", 1, 2, 1, JOF_BYTE|JOF_LEFTASSOC|JOF_ARITH)
OPDEF(JSOP_SUB, 28, "sub", "-", 1, 2, 1, JOF_BYTE|JOF_LEFTASSOC|JOF_ARITH)
OPDEF(JSOP_MUL, 29, "mul", "*", 1, 2, 1, JOF_BYTE|JOF_LEFTASSOC|JOF_ARITH)
OPDEF(JSOP_DIV, 30, "div", "/", 1, 2, 1, JOF_BYTE|JOF_LEFTASSOC|JOF_ARITH)
OPDEF(JSOP_MOD, 31, "mod", "%", 1, 2, 1, JOF_BYTE|JOF_LEFTASSOC|JOF_ARITH)
OPDEF(JSOP_NOT, 32, "not", "!", 1, 1, 1, JOF_BYTE|JOF_ARITH|JOF_DETECTING)
OPDEF(JSOP_BITNOT, 33, "bitnot", "~", 1, 1, 1, JOF_BYTE|JOF_ARITH)
OPDEF(JSOP_NEG, 34, "neg", "- ", 1, 1, 1, JOF_BYTE|JOF_ARITH)
OPDEF(JSOP_POS, 35, "pos", "+ ", 1, 1, 1, JOF_BYTE|JOF_ARITH)
OPDEF(JSOP_DELNAME, 36, "delname", NULL, 5, 0, 1, JOF_ATOM|JOF_NAME)
OPDEF(JSOP_DELPROP, 37, "delprop", NULL, 5, 1, 1, JOF_ATOM|JOF_PROP)
OPDEF(JSOP_DELELEM, 38, "delelem", NULL, 1, 2, 1, JOF_BYTE |JOF_ELEM)
OPDEF(JSOP_TYPEOF, 39, js_typeof_str,NULL, 1, 1, 1, JOF_BYTE|JOF_DETECTING)
OPDEF(JSOP_VOID, 40, js_void_str, NULL, 1, 1, 1, JOF_BYTE)
OPDEF(JSOP_UNUSED41, 41, "unused41", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED42, 42, "unused42", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED43, 43, "unused43", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED44, 44, "unused44", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED45, 45, "unused45", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED46, 46, "unused46", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED47, 47, "unused47", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED48, 48, "unused48", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED49, 49, "unused49", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED50, 50, "unused50", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED51, 51, "unused51", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED52, 52, "unused52", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_GETPROP, 53, "getprop", NULL, 5, 1, 1, JOF_ATOM|JOF_PROP|JOF_TYPESET|JOF_TMPSLOT3)
OPDEF(JSOP_SETPROP, 54, "setprop", NULL, 5, 2, 1, JOF_ATOM|JOF_PROP|JOF_SET|JOF_DETECTING|JOF_TMPSLOT)
OPDEF(JSOP_GETELEM, 55, "getelem", NULL, 1, 2, 1, JOF_BYTE |JOF_ELEM|JOF_TYPESET|JOF_LEFTASSOC)
OPDEF(JSOP_SETELEM, 56, "setelem", NULL, 1, 3, 1, JOF_BYTE |JOF_ELEM|JOF_SET|JOF_DETECTING)
OPDEF(JSOP_CALLNAME, 57, "callname", NULL, 5, 0, 1, JOF_ATOM|JOF_NAME|JOF_TYPESET)
OPDEF(JSOP_CALL, 58, "call", NULL, 3, -1, 1, JOF_UINT16|JOF_INVOKE|JOF_TYPESET)
OPDEF(JSOP_NAME, 59, "name", NULL, 5, 0, 1, JOF_ATOM|JOF_NAME|JOF_TYPESET)
OPDEF(JSOP_DOUBLE, 60, "double", NULL, 5, 0, 1, JOF_DOUBLE)
OPDEF(JSOP_STRING, 61, "string", NULL, 5, 0, 1, JOF_ATOM)
OPDEF(JSOP_ZERO, 62, "zero", "0", 1, 0, 1, JOF_BYTE)
OPDEF(JSOP_ONE, 63, "one", "1", 1, 0, 1, JOF_BYTE)
OPDEF(JSOP_NULL, 64, js_null_str, js_null_str, 1, 0, 1, JOF_BYTE)
OPDEF(JSOP_THIS, 65, js_this_str, js_this_str, 1, 0, 1, JOF_BYTE)
OPDEF(JSOP_FALSE, 66, js_false_str, js_false_str, 1, 0, 1, JOF_BYTE)
OPDEF(JSOP_TRUE, 67, js_true_str, js_true_str, 1, 0, 1, JOF_BYTE)
OPDEF(JSOP_OR, 68, "or", NULL, 5, 1, 1, JOF_JUMP|JOF_DETECTING|JOF_LEFTASSOC)
OPDEF(JSOP_AND, 69, "and", NULL, 5, 1, 1, JOF_JUMP|JOF_DETECTING|JOF_LEFTASSOC)
/* The switch bytecodes have variable length. */
OPDEF(JSOP_TABLESWITCH, 70, "tableswitch", NULL, -1, 1, 0, JOF_TABLESWITCH|JOF_DETECTING)
/*
* Prologue emitted in scripts expected to run once, which deoptimizes code if
* it executes multiple times.
*/
OPDEF(JSOP_RUNONCE, 71, "runonce", NULL, 1, 0, 0, JOF_BYTE)
/* New, infallible/transitive identity ops. */
OPDEF(JSOP_STRICTEQ, 72, "stricteq", "===", 1, 2, 1, JOF_BYTE|JOF_DETECTING|JOF_LEFTASSOC|JOF_ARITH)
OPDEF(JSOP_STRICTNE, 73, "strictne", "!==", 1, 2, 1, JOF_BYTE|JOF_DETECTING|JOF_LEFTASSOC|JOF_ARITH)
/*
* Sometimes web pages do 'o.Item(i) = j'. This is not an early SyntaxError,
* for web compatibility. Instead we emit JSOP_SETCALL after the function call,
* an opcode that always throws.
*/
OPDEF(JSOP_SETCALL, 74, "setcall", NULL, 1, 0, 0, JOF_BYTE)
/*
* JSOP_ITER sets up a for-in or for-each-in loop using the JSITER_* flag bits
* in this op's uint8_t immediate operand. It replaces the top of stack value
* with an iterator for that value.
*
* JSOP_MOREITER stores the next iterated value into cx->iterValue and pushes
* true if another value is available, and false otherwise. It is followed
* immediately by JSOP_IFNE.
*
* 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, 1, JOF_UINT8)
OPDEF(JSOP_MOREITER, 76, "moreiter", NULL, 1, 1, 2, JOF_BYTE)
OPDEF(JSOP_ITERNEXT, 77, "iternext", "<next>", 1, 0, 1, JOF_BYTE)
OPDEF(JSOP_ENDITER, 78, "enditer", NULL, 1, 1, 0, JOF_BYTE)
OPDEF(JSOP_FUNAPPLY, 79, "funapply", NULL, 3, -1, 1, JOF_UINT16|JOF_INVOKE|JOF_TYPESET)
/* Push object initializer literal. */
OPDEF(JSOP_OBJECT, 80, "object", NULL, 5, 0, 1, JOF_OBJECT)
/* Pop value and discard it. */
OPDEF(JSOP_POP, 81, "pop", NULL, 1, 1, 0, JOF_BYTE)
/* Call a function as a constructor; operand is argc. */
OPDEF(JSOP_NEW, 82, js_new_str, NULL, 3, -1, 1, JOF_UINT16|JOF_INVOKE|JOF_TYPESET)
OPDEF(JSOP_SPREAD, 83, "spread", NULL, 1, 3, 2, JOF_BYTE|JOF_ELEM|JOF_SET)
/* Fast get/set ops for function arguments and local variables. */
OPDEF(JSOP_GETARG, 84, "getarg", NULL, 3, 0, 1, JOF_QARG |JOF_NAME)
OPDEF(JSOP_SETARG, 85, "setarg", NULL, 3, 1, 1, JOF_QARG |JOF_NAME|JOF_SET)
OPDEF(JSOP_GETLOCAL, 86,"getlocal", NULL, 3, 0, 1, JOF_LOCAL|JOF_NAME)
OPDEF(JSOP_SETLOCAL, 87,"setlocal", NULL, 3, 1, 1, JOF_LOCAL|JOF_NAME|JOF_SET|JOF_DETECTING)
/* Push unsigned 16-bit int constant. */
OPDEF(JSOP_UINT16, 88, "uint16", NULL, 3, 0, 1, JOF_UINT16)
/*
* Object and array literal support. NEWINIT takes the kind of initializer
* (JSProto_Array or JSProto_Object). NEWARRAY is an array initializer
* taking the final length, which can be filled in at the start and initialized
* directly. NEWOBJECT is an object initializer taking an object with the final
* shape, which can be set at the start and slots then filled in directly.
* NEWINIT has an extra byte so it can be exchanged with NEWOBJECT during emit.
*/
OPDEF(JSOP_NEWINIT, 89, "newinit", NULL, 5, 0, 1, JOF_UINT8|JOF_TYPESET)
OPDEF(JSOP_NEWARRAY, 90, "newarray", NULL, 4, 0, 1, JOF_UINT24|JOF_TYPESET)
OPDEF(JSOP_NEWOBJECT, 91, "newobject", NULL, 5, 0, 1, JOF_OBJECT|JOF_TYPESET)
OPDEF(JSOP_ENDINIT, 92, "endinit", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_INITPROP, 93, "initprop", NULL, 5, 2, 1, JOF_ATOM|JOF_PROP|JOF_SET|JOF_DETECTING)
/* Initialize a numeric property in an object literal, like {1: x}. */
OPDEF(JSOP_INITELEM, 94, "initelem", NULL, 1, 3, 1, JOF_BYTE|JOF_ELEM|JOF_SET|JOF_DETECTING)
/* Used in array literals with spread. */
OPDEF(JSOP_INITELEM_INC,95, "initelem_inc", NULL, 1, 3, 2, JOF_BYTE|JOF_ELEM|JOF_SET)
/* Initialize an array element. */
OPDEF(JSOP_INITELEM_ARRAY,96, "initelem_array", NULL, 4, 2, 1, JOF_UINT24|JOF_ELEM|JOF_SET|JOF_DETECTING)
/*
* Initialize a getter/setter in an object literal. The INITELEM* ops are used
* for numeric properties like {get 2() {}}.
*/
OPDEF(JSOP_INITPROP_GETTER, 97, "initprop_getter", NULL, 5, 2, 1, JOF_ATOM|JOF_PROP|JOF_SET|JOF_DETECTING)
OPDEF(JSOP_INITPROP_SETTER, 98, "initprop_setter", NULL, 5, 2, 1, JOF_ATOM|JOF_PROP|JOF_SET|JOF_DETECTING)
OPDEF(JSOP_INITELEM_GETTER, 99, "initelem_getter", NULL, 1, 3, 1, JOF_BYTE|JOF_ELEM|JOF_SET|JOF_DETECTING)
OPDEF(JSOP_INITELEM_SETTER, 100, "initelem_setter", NULL, 1, 3, 1, JOF_BYTE|JOF_ELEM|JOF_SET|JOF_DETECTING)
OPDEF(JSOP_UNUSED101, 101, "unused101", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED102, 102, "unused102", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED103, 103, "unused103", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED104, 104, "unused104", NULL, 1, 0, 0, JOF_BYTE)
/* Leave a for-let-in block leaving its storage pushed (to be popped after enditer). */
OPDEF(JSOP_LEAVEFORLETIN, 105,"leaveforletin",NULL, 1, 0, 0, JOF_BYTE)
/* The argument is the offset to the next statement and is used by IonMonkey. */
OPDEF(JSOP_LABEL, 106,"label", NULL, 5, 0, 0, JOF_JUMP)
OPDEF(JSOP_UNUSED107, 107,"unused107", NULL, 1, 0, 0, JOF_BYTE)
/* Like JSOP_FUNAPPLY but for f.call instead of f.apply. */
OPDEF(JSOP_FUNCALL, 108,"funcall", NULL, 3, -1, 1, JOF_UINT16|JOF_INVOKE|JOF_TYPESET)
/* This opcode is the target of the backwards jump for some loop. */
OPDEF(JSOP_LOOPHEAD, 109,"loophead", NULL, 1, 0, 0, JOF_BYTE)
/* ECMA-compliant assignment ops. */
OPDEF(JSOP_BINDNAME, 110,"bindname", NULL, 5, 0, 1, JOF_ATOM|JOF_NAME|JOF_SET)
OPDEF(JSOP_SETNAME, 111,"setname", NULL, 5, 2, 1, JOF_ATOM|JOF_NAME|JOF_SET|JOF_DETECTING)
/* Exception handling ops. */
OPDEF(JSOP_THROW, 112,js_throw_str, NULL, 1, 1, 0, JOF_BYTE)
/* 'in' and 'instanceof' ops. */
OPDEF(JSOP_IN, 113,js_in_str, js_in_str, 1, 2, 1, JOF_BYTE|JOF_LEFTASSOC)
OPDEF(JSOP_INSTANCEOF,114,js_instanceof_str,js_instanceof_str,1,2,1,JOF_BYTE|JOF_LEFTASSOC|JOF_TMPSLOT)
/* debugger op */
OPDEF(JSOP_DEBUGGER, 115,"debugger", NULL, 1, 0, 0, JOF_BYTE)
/* gosub/retsub for finally handling */
OPDEF(JSOP_GOSUB, 116,"gosub", NULL, 5, 0, 0, JOF_JUMP)
OPDEF(JSOP_RETSUB, 117,"retsub", NULL, 1, 2, 0, JOF_BYTE)
/* More exception handling ops. */
OPDEF(JSOP_EXCEPTION, 118,"exception", NULL, 1, 0, 1, JOF_BYTE)
/* Embedded lineno to speedup pc->line mapping. */
OPDEF(JSOP_LINENO, 119,"lineno", NULL, 3, 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,120,"condswitch", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_CASE, 121,"case", NULL, 5, 2, 1, JOF_JUMP)
OPDEF(JSOP_DEFAULT, 122,"default", NULL, 5, 1, 0, JOF_JUMP)
/*
* ECMA-compliant call to eval op
*/
OPDEF(JSOP_EVAL, 123,"eval", NULL, 3, -1, 1, JOF_UINT16|JOF_INVOKE|JOF_TYPESET)
/*
* ECMA-compliant helper for 'for (x[i] in o)' loops.
*/
OPDEF(JSOP_ENUMELEM, 124,"enumelem", NULL, 1, 3, 0, JOF_BYTE |JOF_SET|JOF_TMPSLOT)
OPDEF(JSOP_UNUSED125, 125, "unused125", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED126, 126, "unused126", NULL, 1, 0, 0, JOF_BYTE)
/*
* Prolog bytecodes for defining function, var, and const names.
*/
OPDEF(JSOP_DEFFUN, 127,"deffun", NULL, 5, 0, 0, JOF_OBJECT)
OPDEF(JSOP_DEFCONST, 128,"defconst", NULL, 5, 0, 0, JOF_ATOM)
OPDEF(JSOP_DEFVAR, 129,"defvar", NULL, 5, 0, 0, JOF_ATOM)
/* Push a closure for a named or anonymous function expression. */
OPDEF(JSOP_LAMBDA, 130, "lambda", NULL, 5, 0, 1, JOF_OBJECT)
/* Used for named function expression self-naming, if lightweight. */
OPDEF(JSOP_CALLEE, 131, "callee", NULL, 1, 0, 1, JOF_BYTE)
OPDEF(JSOP_UNUSED132, 132, "unused132", NULL, 1, 0, 0, JOF_BYTE)
/* Pick an element from the stack. */
OPDEF(JSOP_PICK, 133, "pick", NULL, 2, 0, 0, JOF_UINT8|JOF_TMPSLOT2)
/*
* 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, 134,"try", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_FINALLY, 135,"finally", NULL, 1, 0, 2, JOF_BYTE)
/*
* An "aliased variable" is a var, let, or formal arg that is aliased. Sources
* of aliasing include: nested functions accessing the vars of an enclosing
* function, function statements that are conditionally executed, 'eval',
* 'with', and 'arguments'. All of these cases require creating a CallObject to
* own the aliased variable.
*
* An ALIASEDVAR opcode contains the following immediates:
* uint16 hops: the number of scope objects to skip to find the ScopeObject
* containing the variable being accessed
* uint16 slot: the slot containing the variable in the ScopeObject (this
* 'slot' does not include RESERVED_SLOTS).
* uint32 block: the index (into the script object table) of the block chain
* at the point of the variable access.
*/
OPDEF(JSOP_GETALIASEDVAR, 136,"getaliasedvar",NULL, 9, 0, 1, JOF_SCOPECOORD|JOF_NAME|JOF_TYPESET)
OPDEF(JSOP_CALLALIASEDVAR,137,"callaliasedvar",NULL, 9, 0, 1, JOF_SCOPECOORD|JOF_NAME|JOF_TYPESET)
OPDEF(JSOP_SETALIASEDVAR, 138,"setaliasedvar",NULL, 9, 1, 1, JOF_SCOPECOORD|JOF_NAME|JOF_SET|JOF_DETECTING)
OPDEF(JSOP_UNUSED139, 139, "unused139", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED140, 140, "unused140", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED141, 141, "unused141", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED142, 142, "unused142", NULL, 1, 0, 0, JOF_BYTE)
/*
* Intrinsic names are emitted instead of JSOP_*NAME ops when the
* CompileOptions flag "selfHostingMode" is set.
*
* They are used in self-hosted code to access other self-hosted values and
* intrinsic functions the runtime doesn't give client JS code access to.
*/
OPDEF(JSOP_GETINTRINSIC, 143, "getintrinsic", NULL, 5, 0, 1, JOF_ATOM|JOF_NAME|JOF_TYPESET)
OPDEF(JSOP_CALLINTRINSIC, 144, "callintrinsic", NULL, 5, 0, 1, JOF_ATOM|JOF_NAME|JOF_TYPESET)
OPDEF(JSOP_SETINTRINSIC, 145, "setintrinsic", NULL, 5, 2, 1, JOF_ATOM|JOF_NAME|JOF_SET|JOF_DETECTING)
OPDEF(JSOP_BINDINTRINSIC, 146, "bindintrinsic", NULL, 5, 0, 1, JOF_ATOM|JOF_NAME|JOF_SET)
/* Unused. */
OPDEF(JSOP_UNUSED147, 147,"unused147", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED148, 148,"unused148", NULL, 1, 0, 0, JOF_BYTE)
/* Placeholders for a real jump opcode set during backpatch chain fixup. */
OPDEF(JSOP_BACKPATCH, 149,"backpatch", NULL, 5, 0, 0, JOF_JUMP)
OPDEF(JSOP_UNUSED150, 150,"unused150", NULL, 1, 0, 0, JOF_BYTE)
/* Set pending exception from the stack, to trigger rethrow. */
OPDEF(JSOP_THROWING, 151,"throwing", NULL, 1, 1, 0, JOF_BYTE)
/* Set and get return value pseudo-register in stack frame. */
OPDEF(JSOP_SETRVAL, 152,"setrval", NULL, 1, 1, 0, JOF_BYTE)
OPDEF(JSOP_RETRVAL, 153,"retrval", NULL, 1, 0, 0, JOF_BYTE)
/* Free variable references that must either be found on the global or a ReferenceError */
OPDEF(JSOP_GETGNAME, 154,"getgname", NULL, 5, 0, 1, JOF_ATOM|JOF_NAME|JOF_TYPESET|JOF_GNAME)
OPDEF(JSOP_SETGNAME, 155,"setgname", NULL, 5, 2, 1, JOF_ATOM|JOF_NAME|JOF_SET|JOF_DETECTING|JOF_GNAME)
OPDEF(JSOP_UNUSED156, 156, "unused156", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED157, 157, "unused157", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED158, 158, "unused158", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED159, 159, "unused159", NULL, 1, 0, 0, JOF_BYTE)
/* Regular expression literal requiring special "fork on exec" handling. */
OPDEF(JSOP_REGEXP, 160,"regexp", NULL, 5, 0, 1, JOF_REGEXP)
OPDEF(JSOP_UNUSED161, 161,"unused161", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED162, 162,"unused162", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED163, 163,"unused163", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED164, 164,"unused164", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED165, 165,"unused165", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED166, 166,"unused166", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED167, 167,"unused167", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED168, 168,"unused168", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED169, 169,"unused169", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED170, 170,"unused170", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED171, 171,"unused171", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED172, 172,"unused172", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED173, 173,"unused173", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED174, 174,"unused174", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED175, 175,"unused175", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED176, 176,"unused176", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED177, 177,"unused177", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED178, 178,"unused178", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED179, 179,"unused179", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED180, 180,"unused180", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED181, 181,"unused181", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED182, 182,"unused182", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED183, 183,"unused183", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_CALLPROP, 184,"callprop", NULL, 5, 1, 1, JOF_ATOM|JOF_PROP|JOF_TYPESET|JOF_TMPSLOT3)
/* Enter a let block/expr whose slots are at the top of the stack. */
OPDEF(JSOP_ENTERLET0, 185,"enterlet0", NULL, 5, -1, -1, JOF_OBJECT)
/* Enter a let block/expr whose slots are 1 below the top of the stack. */
OPDEF(JSOP_ENTERLET1, 186,"enterlet1", NULL, 5, -1, -1, JOF_OBJECT)
/*
* Opcode to hold 24-bit immediate integer operands.
*/
OPDEF(JSOP_UINT24, 187,"uint24", NULL, 4, 0, 1, JOF_UINT24)
OPDEF(JSOP_UNUSED188, 188,"unused188", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED189, 189,"unused189", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED190, 190,"unused190", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED191, 191,"unused191", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED192, 192,"unused192", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_CALLELEM, 193, "callelem", NULL, 1, 2, 1, JOF_BYTE |JOF_ELEM|JOF_TYPESET|JOF_LEFTASSOC)
/*
* 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, 194,"stop", NULL, 1, 0, 0, JOF_BYTE)
/*
* Get an extant property value, throwing ReferenceError if the identified
* property does not exist.
*/
OPDEF(JSOP_GETXPROP, 195,"getxprop", NULL, 5, 1, 1, JOF_ATOM|JOF_PROP|JOF_TYPESET)
OPDEF(JSOP_UNUSED196, 196,"unused196", NULL, 1, 0, 0, JOF_BYTE)
/*
* Specialized JSOP_TYPEOF to avoid reporting undefined for typeof(0, undef).
*/
OPDEF(JSOP_TYPEOFEXPR, 197,"typeofexpr", NULL, 1, 1, 1, JOF_BYTE|JOF_DETECTING)
/*
* Block-local scope support.
*/
OPDEF(JSOP_ENTERBLOCK, 198,"enterblock", NULL, 5, 0, -1, JOF_OBJECT)
OPDEF(JSOP_LEAVEBLOCK, 199,"leaveblock", NULL, 3, -1, 0, JOF_UINT16)
OPDEF(JSOP_UNUSED200, 200,"unused200", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED201, 201,"unused201", NULL, 1, 0, 0, JOF_BYTE)
/*
* Generator and array comprehension support.
*/
OPDEF(JSOP_GENERATOR, 202,"generator", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_YIELD, 203,"yield", NULL, 1, 1, 1, JOF_BYTE)
OPDEF(JSOP_ARRAYPUSH, 204,"arraypush", NULL, 3, 1, 0, JOF_LOCAL)
/*
* Get the built-in function::foo namespace and push it.
*/
OPDEF(JSOP_GETFUNNS, 205,"getfunns", NULL, 1, 0, 1, JOF_BYTE)
/*
* Variant of JSOP_ENUMELEM for destructuring const (const [a, b] = ...).
*/
OPDEF(JSOP_ENUMCONSTELEM, 206,"enumconstelem",NULL, 1, 3, 0, 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,207,"leaveblockexpr",NULL, 3, -1, 1, JOF_UINT16)
OPDEF(JSOP_UNUSED208, 208, "unused208", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED209, 209, "unused209", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED210, 210, "unused210", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_CALLGNAME, 211, "callgname", NULL, 5, 0, 1, JOF_ATOM|JOF_NAME|JOF_TYPESET|JOF_GNAME)
OPDEF(JSOP_CALLLOCAL, 212, "calllocal", NULL, 3, 0, 1, JOF_LOCAL|JOF_NAME)
OPDEF(JSOP_CALLARG, 213, "callarg", NULL, 3, 0, 1, JOF_QARG |JOF_NAME)
OPDEF(JSOP_BINDGNAME, 214, "bindgname", NULL, 5, 0, 1, JOF_ATOM|JOF_NAME|JOF_SET|JOF_GNAME)
/*
* Opcodes to hold 8-bit and 32-bit immediate integer operands.
*/
OPDEF(JSOP_INT8, 215, "int8", NULL, 2, 0, 1, JOF_INT8)
OPDEF(JSOP_INT32, 216, "int32", NULL, 5, 0, 1, JOF_INT32)
/*
* Get the value of the 'length' property from a stacked object.
*/
OPDEF(JSOP_LENGTH, 217, "length", NULL, 5, 1, 1, JOF_ATOM|JOF_PROP|JOF_TYPESET|JOF_TMPSLOT3)
/*
* 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 opcode.
*/
OPDEF(JSOP_HOLE, 218, "hole", NULL, 1, 0, 1, JOF_BYTE)
OPDEF(JSOP_UNUSED219, 219,"unused219", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED220, 220,"unused220", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED221, 221,"unused221", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED222, 222,"unused222", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_UNUSED223, 223,"unused223", NULL, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_REST, 224, "rest", NULL, 1, 0, 1, JOF_BYTE|JOF_TYPESET)
/* Pop the stack, convert to a jsid (int or string), and push back. */
OPDEF(JSOP_TOID, 225, "toid", NULL, 1, 1, 1, JOF_BYTE)
/* Push the implicit 'this' value for calls to the associated name. */
OPDEF(JSOP_IMPLICITTHIS, 226, "implicitthis", "", 5, 0, 1, JOF_ATOM)
/*
* This opcode is the target of the entry jump for some loop. The uint8 argument
* is the loop depth. This value starts at 1 and is just a hint: deeply
* nested loops all have the same value.
*/
OPDEF(JSOP_LOOPENTRY, 227, "loopentry", NULL, 2, 0, 0, JOF_UINT8)
/* Notes the point at which a value is pushed as an argument. */
OPDEF(JSOP_NOTEARG, 228, "notearg", NULL, 1, 0, 0, JOF_BYTE)
