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Mozilla/mozilla/js/ref/jsopcode.def
norris%netscape.com bc2d3f5307 Add support for ECMA switch statements. These are like LISP cond in that they 
evaluate the case label each time.
Still to do is to optimize so that TABLESWITCH and LOOKUPSWITCH are created
when possible.


git-svn-id: svn://10.0.0.236/trunk@9296 18797224-902f-48f8-a5cc-f745e15eee43
1998-09-04 00:45:21 +00:00

212 lines
13 KiB
Modula-2
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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)
/* gosub/retsub for finally handling */
OPDEF(JSOP_GOSUB, 114,"gosub", 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)
OPDEF(JSOP_SETSP, 117,"setsp", NULL, 3, 0, 0, 0, JOF_UINT16)
/*
* ECMA-compliant switch statement ops.
* "switch" is essentially "nop" and "default" is essentially "pop" + "goto".
*/
OPDEF(JSOP_CONDSWITCH,118,"switch", NULL, -1, 0, 0, 0, JOF_LOOKUPSWITCH)
OPDEF(JSOP_CASE, 119,"case", NULL, 3, 1, 0, 0, JOF_JUMP)
OPDEF(JSOP_DEFAULT, 120,"default", NULL, 3, 1, 0, 0, JOF_JUMP)
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