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gecko-dev/js/ref/jsopcode.def
mccabe%netscape.com 7596bde975 Propagating work and bug fixes from 
development branch:

- Preliminary exception handling per
ECMA proposal; try, multiple
catchblocks, and finally.  Catchblocks
are of the form catch (v) or
catch(v:<guard>), where guard is an
optional boolean expression that is
evaluated to determine whether the
exception is to be caught by that block.

- ECMA-proposed 'in' operator; "'foo' in
o" or "4 in o" asks if o has property
foo or element 4.

- Added a new set of defines in
jsconfig.h for js 1.4
features-in-progress.  (in, instanceof,
exception handling.)  Default build
version is now 1.4.  Fixed a few
conditional features that had become
broken.

- Progress towards porting to FreeBSD
and Alpha; casts of NaN and friends to
int are a little more localized.  Not
there yet...

- New config files to compile on more
OSes; various fixes to improve
portability.
1998-07-30 23:46:29 +00:00

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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/*
* JavaScript operation bytecodes.
*
* 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
* prec Operator precedence, zero if not an operator
* format Bytecode plus immediate operand encoding format
*
* This file is best viewed with 116 columns:
01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345
*/
/* legend: op val name image len use def prec format */
/* Permanently-assigned bytecodes. */
OPDEF(JSOP_NOP, 0, "nop", NULL, 1, 0, 0, 0, JOF_BYTE)
OPDEF(JSOP_PUSH, 1, "push", NULL, 1, 0, 1, 0, JOF_BYTE)
OPDEF(JSOP_POPV, 2, "popv", NULL, 1, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_ENTERWITH, 3, "enterwith", NULL, 1, 1, 1, 0, JOF_BYTE)
OPDEF(JSOP_LEAVEWITH, 4, "leavewith", NULL, 1, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_RETURN, 5, "return", NULL, 1, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_GOTO, 6, "goto", NULL, 3, 0, 0, 0, JOF_JUMP)
OPDEF(JSOP_IFEQ, 7, "ifeq", NULL, 3, 1, 0, 0, JOF_JUMP)
OPDEF(JSOP_IFNE, 8, "ifne", NULL, 3, 1, 0, 0, JOF_JUMP)
OPDEF(JSOP_FORNAME, 9, "forname", NULL, 3, 1, 1, 0, JOF_CONST|JOF_NAME|JOF_SET)
OPDEF(JSOP_FORPROP, 10, "forprop", NULL, 3, 2, 1, 0, JOF_CONST|JOF_PROP|JOF_SET)
OPDEF(JSOP_FORELEM, 11, "forelem", NULL, 1, 3, 1, 0, JOF_BYTE |JOF_ELEM|JOF_SET)
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_SETNAME, 14, "setname", NULL, 3, 1, 1, 1, JOF_CONST|JOF_NAME|JOF_SET)
OPDEF(JSOP_BITOR, 15, "bitor", "|", 1, 2, 1, 2, JOF_BYTE)
OPDEF(JSOP_BITXOR, 16, "bitxor", "^", 1, 2, 1, 3, JOF_BYTE)
OPDEF(JSOP_BITAND, 17, "bitand", "&", 1, 2, 1, 4, JOF_BYTE)
OPDEF(JSOP_EQ, 18, "eq", "==", 1, 2, 1, 5, JOF_BYTE)
OPDEF(JSOP_NE, 19, "ne", "!=", 1, 2, 1, 5, JOF_BYTE)
OPDEF(JSOP_LT, 20, "lt", "<", 1, 2, 1, 6, JOF_BYTE)
OPDEF(JSOP_LE, 21, "le", "<=", 1, 2, 1, 6, JOF_BYTE)
OPDEF(JSOP_GT, 22, "gt", ">", 1, 2, 1, 6, JOF_BYTE)
OPDEF(JSOP_GE, 23, "ge", ">=", 1, 2, 1, 6, JOF_BYTE)
OPDEF(JSOP_LSH, 24, "lsh", "<<", 1, 2, 1, 7, JOF_BYTE)
OPDEF(JSOP_RSH, 25, "rsh", ">>", 1, 2, 1, 7, JOF_BYTE)
OPDEF(JSOP_URSH, 26, "ursh", ">>>", 1, 2, 1, 7, JOF_BYTE)
OPDEF(JSOP_ADD, 27, "add", "+", 1, 2, 1, 8, JOF_BYTE)
OPDEF(JSOP_SUB, 28, "sub", "-", 1, 2, 1, 8, JOF_BYTE)
OPDEF(JSOP_MUL, 29, "mul", "*", 1, 2, 1, 9, JOF_BYTE)
OPDEF(JSOP_DIV, 30, "div", "/", 1, 2, 1, 9, JOF_BYTE)
OPDEF(JSOP_MOD, 31, "mod", "%", 1, 2, 1, 9, JOF_BYTE)
OPDEF(JSOP_NOT, 32, "not", "!", 1, 1, 1, 10, JOF_BYTE)
OPDEF(JSOP_BITNOT, 33, "bitnot", "~", 1, 1, 1, 10, JOF_BYTE)
OPDEF(JSOP_NEG, 34, "neg", "-", 1, 1, 1, 10, JOF_BYTE)
OPDEF(JSOP_NEW, 35, js_new_str, NULL, 3, -1, 1, 10, JOF_UINT16)
OPDEF(JSOP_DELNAME, 36, "delname", NULL, 3, 0, 1, 10, JOF_CONST|JOF_NAME|JOF_DEL)
OPDEF(JSOP_DELPROP, 37, "delprop", NULL, 3, 1, 1, 10, JOF_CONST|JOF_PROP|JOF_DEL)
OPDEF(JSOP_DELELEM, 38, "delelem", NULL, 1, 2, 1, 10, JOF_BYTE |JOF_ELEM|JOF_DEL)
OPDEF(JSOP_TYPEOF, 39, js_typeof_str,NULL, 1, 1, 1, 10, JOF_BYTE)
OPDEF(JSOP_VOID, 40, js_void_str, NULL, 1, 1, 1, 10, JOF_BYTE)
OPDEF(JSOP_INCNAME, 41, "incname", NULL, 3, 0, 1, 10, JOF_CONST|JOF_NAME|JOF_INC)
OPDEF(JSOP_INCPROP, 42, "incprop", NULL, 3, 1, 1, 10, JOF_CONST|JOF_PROP|JOF_INC)
OPDEF(JSOP_INCELEM, 43, "incelem", NULL, 1, 2, 1, 10, JOF_BYTE |JOF_ELEM|JOF_INC)
OPDEF(JSOP_DECNAME, 44, "decname", NULL, 3, 0, 1, 10, JOF_CONST|JOF_NAME|JOF_DEC)
OPDEF(JSOP_DECPROP, 45, "decprop", NULL, 3, 1, 1, 10, JOF_CONST|JOF_PROP|JOF_DEC)
OPDEF(JSOP_DECELEM, 46, "decelem", NULL, 1, 2, 1, 10, JOF_BYTE |JOF_ELEM|JOF_DEC)
OPDEF(JSOP_NAMEINC, 47, "nameinc", NULL, 3, 0, 1, 10, JOF_CONST|JOF_NAME|JOF_INC|JOF_POST)
OPDEF(JSOP_PROPINC, 48, "propinc", NULL, 3, 1, 1, 10, JOF_CONST|JOF_PROP|JOF_INC|JOF_POST)
OPDEF(JSOP_ELEMINC, 49, "eleminc", NULL, 1, 2, 1, 10, JOF_BYTE |JOF_ELEM|JOF_INC|JOF_POST)
OPDEF(JSOP_NAMEDEC, 50, "namedec", NULL, 3, 0, 1, 10, JOF_CONST|JOF_NAME|JOF_DEC|JOF_POST)
OPDEF(JSOP_PROPDEC, 51, "propdec", NULL, 3, 1, 1, 10, JOF_CONST|JOF_PROP|JOF_DEC|JOF_POST)
OPDEF(JSOP_ELEMDEC, 52, "elemdec", NULL, 1, 2, 1, 10, JOF_BYTE |JOF_ELEM|JOF_DEC|JOF_POST)
OPDEF(JSOP_GETPROP, 53, "getprop", NULL, 3, 1, 1, 11, JOF_CONST|JOF_PROP)
OPDEF(JSOP_SETPROP, 54, "setprop", NULL, 3, 2, 1, 1, JOF_CONST|JOF_PROP|JOF_SET)
OPDEF(JSOP_GETELEM, 55, "getelem", NULL, 1, 2, 1, 11, JOF_BYTE |JOF_ELEM)
OPDEF(JSOP_SETELEM, 56, "setelem", NULL, 1, 3, 1, 1, JOF_BYTE |JOF_ELEM|JOF_SET)
OPDEF(JSOP_PUSHOBJ, 57, "pushobj", NULL, 1, 0, 1, 0, JOF_BYTE)
OPDEF(JSOP_CALL, 58, "call", NULL, 3, -1, 1, 11, JOF_UINT16)
OPDEF(JSOP_NAME, 59, "name", NULL, 3, 0, 1, 12, JOF_CONST|JOF_NAME)
OPDEF(JSOP_NUMBER, 60, "number", NULL, 3, 0, 1, 12, JOF_CONST)
OPDEF(JSOP_STRING, 61, "string", NULL, 3, 0, 1, 12, JOF_CONST)
OPDEF(JSOP_ZERO, 62, "zero", "0", 1, 0, 1, 12, JOF_BYTE)
OPDEF(JSOP_ONE, 63, "one", "1", 1, 0, 1, 12, JOF_BYTE)
OPDEF(JSOP_NULL, 64, js_null_str, js_null_str, 1, 0, 1, 12, JOF_BYTE)
OPDEF(JSOP_THIS, 65, js_this_str, js_this_str, 1, 0, 1, 12, JOF_BYTE)
OPDEF(JSOP_FALSE, 66, js_false_str, js_false_str, 1, 0, 1, 12, JOF_BYTE)
OPDEF(JSOP_TRUE, 67, js_true_str, js_true_str, 1, 0, 1, 12, JOF_BYTE)
OPDEF(JSOP_OR, 68, "or", NULL, 3, 1, 0, 0, JOF_JUMP)
OPDEF(JSOP_AND, 69, "and", NULL, 3, 1, 0, 0, JOF_JUMP)
/* The switch bytecodes have variable length. */
OPDEF(JSOP_TABLESWITCH, 70, "tableswitch", NULL, -1, 1, 0, 0, JOF_TABLESWITCH)
OPDEF(JSOP_LOOKUPSWITCH, 71, "lookupswitch", NULL, -1, 1, 0, 0, JOF_LOOKUPSWITCH)
/* New, infallible/transitive identity ops. */
OPDEF(JSOP_NEW_EQ, 72, "eq", NULL, 1, 2, 1, 5, JOF_BYTE)
OPDEF(JSOP_NEW_NE, 73, "ne", NULL, 1, 2, 1, 5, JOF_BYTE)
/* Lexical closure constructor. */
OPDEF(JSOP_CLOSURE, 74, "closure", NULL, 3, 0, 1, 0, JOF_CONST)
/* Export and import ops. */
OPDEF(JSOP_EXPORTALL, 75, "exportall", NULL, 1, 0, 0, 0, JOF_BYTE)
OPDEF(JSOP_EXPORTNAME,76, "exportname", NULL, 3, 0, 0, 0, JOF_CONST|JOF_NAME)
OPDEF(JSOP_IMPORTALL, 77, "importall", NULL, 1, 1, 0, 0, JOF_BYTE)
OPDEF(JSOP_IMPORTPROP,78, "importprop", NULL, 3, 1, 0, 0, JOF_CONST|JOF_PROP|JOF_IMPORT)
OPDEF(JSOP_IMPORTELEM,79, "importelem", NULL, 3, 2, 0, 0, JOF_BYTE |JOF_ELEM|JOF_IMPORT)
/* Push object literal. */
OPDEF(JSOP_OBJECT, 80, "object", NULL, 3, 0, 1, 12, JOF_CONST)
/* Pop value and discard it. */
OPDEF(JSOP_POP, 81, "pop", NULL, 1, 1, 0, 0, JOF_BYTE)
/* Convert value to number, for unary +. */
OPDEF(JSOP_POS, 82, "pos", "+", 1, 1, 1, 10, JOF_BYTE)
/* 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, 12, JOF_QARG |JOF_NAME)
OPDEF(JSOP_SETARG, 85, "setarg", NULL, 3, 1, 1, 1, JOF_QARG |JOF_NAME|JOF_SET)
OPDEF(JSOP_GETVAR, 86, "getvar", NULL, 3, 0, 1, 12, JOF_QVAR |JOF_NAME)
OPDEF(JSOP_SETVAR, 87, "setvar", NULL, 3, 1, 1, 1, JOF_QVAR |JOF_NAME|JOF_SET)
/* Push unsigned 16-bit int constant. */
OPDEF(JSOP_UINT16, 88, "uint16", NULL, 3, 0, 1, 12, JOF_UINT16)
/* Object and array literal support. */
OPDEF(JSOP_NEWINIT, 89, "newinit", NULL, 1, 2, 1, 10, JOF_BYTE)
OPDEF(JSOP_ENDINIT, 90, "endinit", NULL, 1, 0, 0, 0, JOF_BYTE)
OPDEF(JSOP_INITPROP, 91, "initprop", NULL, 3, 1, 0, 0, JOF_CONST|JOF_PROP)
OPDEF(JSOP_INITELEM, 92, "initelem", NULL, 1, 2, 0, 0, JOF_BYTE |JOF_ELEM)
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 local vars. */
OPDEF(JSOP_INCARG, 95, "incarg", NULL, 3, 0, 1, 10, JOF_QARG |JOF_NAME|JOF_INC)
OPDEF(JSOP_INCVAR, 96, "incvar", NULL, 3, 0, 1, 10, JOF_QVAR |JOF_NAME|JOF_INC)
OPDEF(JSOP_DECARG, 97, "decarg", NULL, 3, 0, 1, 10, JOF_QARG |JOF_NAME|JOF_DEC)
OPDEF(JSOP_DECVAR, 98, "decvar", NULL, 3, 0, 1, 10, JOF_QVAR |JOF_NAME|JOF_DEC)
OPDEF(JSOP_ARGINC, 99, "arginc", NULL, 3, 0, 1, 10, JOF_QARG |JOF_NAME|JOF_INC|JOF_POST)
OPDEF(JSOP_VARINC, 100,"varinc", NULL, 3, 0, 1, 10, JOF_QVAR |JOF_NAME|JOF_INC|JOF_POST)
OPDEF(JSOP_ARGDEC, 101,"argdec", NULL, 3, 0, 1, 10, JOF_QARG |JOF_NAME|JOF_DEC|JOF_POST)
OPDEF(JSOP_VARDEC, 102,"vardec", NULL, 3, 0, 1, 10, JOF_QVAR |JOF_NAME|JOF_DEC|JOF_POST)
/* ECMA-compliant for/in ops. */
OPDEF(JSOP_TOOBJECT, 103,"toobject", NULL, 1, 1, 1, 0, JOF_BYTE)
OPDEF(JSOP_FORNAME2, 104,"forname2", NULL, 3, 0, 1, 0, JOF_CONST|JOF_NAME|JOF_SET|JOF_FOR2)
OPDEF(JSOP_FORPROP2, 105,"forprop2", NULL, 3, 1, 1, 0, JOF_CONST|JOF_PROP|JOF_SET|JOF_FOR2)
OPDEF(JSOP_FORELEM2, 106,"forelem2", NULL, 1, 2, 1, 0, JOF_BYTE |JOF_ELEM|JOF_SET|JOF_FOR2)
OPDEF(JSOP_POP2, 107,"pop2", NULL, 1, 2, 0, 0, JOF_BYTE)
/* ECMA-complaint assignment ops. */
OPDEF(JSOP_BINDNAME, 108,"bindname", NULL, 3, 0, 1, 0, JOF_CONST|JOF_NAME)
OPDEF(JSOP_SETNAME2, 109,"setname2", NULL, 3, 2, 1, 1, JOF_CONST|JOF_NAME|JOF_SET)
/* Exception handling ops. */
OPDEF(JSOP_THROW, 110,"throw", NULL, 1, 1, 0, 0, JOF_BYTE)
/* 'in' and 'instanceof' ops. */
OPDEF(JSOP_IN, 111,js_in_str, js_in_str, 1, 2, 1, 6, JOF_BYTE)
OPDEF(JSOP_INSTANCEOF,112,js_instanceof_str,js_instanceof_str,1,2,1,6,JOF_BYTE)
/* debugger op */
OPDEF(JSOP_DEBUGGER, 113,"debugger", NULL, 1, 0, 0, 0, JOF_BYTE)
/* jsr/return for finally handling */
OPDEF(JSOP_JSR, 114,"jsr", NULL, 3, 0, 1, 0, JOF_JUMP)
OPDEF(JSOP_RETSUB, 115,"retsub", NULL, 1, 1, 0, 0, JOF_BYTE)
/* more exception handling ops */
OPDEF(JSOP_EXCEPTION, 116,"exception", NULL, 1, 0, 1, 0, JOF_BYTE)
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