jsopcode.tbl

java script test programing source code

OPDEF(JSOP_FORPROP,   105,"forprop",    NULL,         3,  1,  1, 18,  JOF_CONST|JOF_PROP|JOF_FOR)
OPDEF(JSOP_FORELEM,   106,"forelem",    NULL,         1,  1,  3, 18,  JOF_BYTE |JOF_ELEM|JOF_FOR)
OPDEF(JSOP_POP2,      107,"pop2",       NULL,         1,  2,  0,  0,  JOF_BYTE)

/* ECMA-compliant assignment ops. */
OPDEF(JSOP_BINDNAME,  108,"bindname",   NULL,         3,  0,  1,  0,  JOF_CONST|JOF_NAME|JOF_SET|JOF_ASSIGNING)
OPDEF(JSOP_SETNAME,   109,"setname",    NULL,         3,  2,  1,  3,  JOF_CONST|JOF_NAME|JOF_SET|JOF_ASSIGNING|JOF_DETECTING)

/* 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, 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,  0,  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.
 * 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)
OPDEF(JSOP_CASE,      119,"case",       NULL,         3,  1,  0,  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)

/*
 * ECMA-compliant helper for 'for (x[i] in o)' loops.
 */
OPDEF(JSOP_ENUMELEM,  122,"enumelem",   NULL,         1,  3,  0,  3,  JOF_BYTE |JOF_SET|JOF_ASSIGNING)

/*
 * 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_CONST|JOF_DECLARING)
OPDEF(JSOP_DEFCONST,  126,"defconst",   NULL,         3,  0,  0,  0,  JOF_CONST|JOF_DECLARING)
OPDEF(JSOP_DEFVAR,    127,"defvar",     NULL,         3,  0,  0,  0,  JOF_CONST|JOF_DECLARING)

/* Auto-clone (if needed due to re-parenting) and push an anonymous function. */
OPDEF(JSOP_ANONFUNOBJ,  128, "anonfunobj",  NULL,     3,  0,  1, 16,  JOF_CONST)

/* ECMA ed. 3 named function expression. */
OPDEF(JSOP_NAMEDFUNOBJ, 129, "namedfunobj", NULL,     3,  0,  1, 16,  JOF_CONST)

/*
 * 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)

/* ECMA-mandated parenthesization opcode, which nulls the reference base register, obj; see jsinterp.c. */
OPDEF(JSOP_GROUP,       131, "group",       NULL,     1,  0,  0,  0,  JOF_BYTE)

/* Host object extension: given 'o.item(i) = j', the left-hand side compiles JSOP_SETCALL, rather than JSOP_CALL. */
OPDEF(JSOP_SETCALL,     132, "setcall",     NULL,     3, -1,  2, 18,  JOF_UINT16|JOF_SET|JOF_ASSIGNING)

/*
 * Exception handling no-ops, for more economical byte-coding than SRC_TRYFIN
 * srcnote-annotated JSOP_NOPs.
 */
OPDEF(JSOP_TRY,         133,"try",        NULL,       1,  0,  0,  0,  JOF_BYTE)
OPDEF(JSOP_FINALLY,     134,"finally",    NULL,       1,  0,  0,  0,  JOF_BYTE)

/*
 * Swap the top two stack elements.
 */
OPDEF(JSOP_SWAP,        135,"swap",       NULL,       1,  2,  2,  0,  JOF_BYTE)

/*
 * 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_INDEXCONST|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,  3,  JOF_JUMPX|JOF_DETECTING)
OPDEF(JSOP_IFNEX,         141,"ifnex",    NULL,       5,  1,  0,  0,  JOF_JUMPX)
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,  1,  0,  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)
OPDEF(JSOP_LOOKUPSWITCHX, 148,"lookupswitchx",NULL,  -1,  1,  0,  0,  JOF_LOOKUPSWITCHX|JOF_DETECTING)

/* 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,  0,  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_CONST|JOF_NAME)
OPDEF(JSOP_SETGVAR,       155,"setgvar",  NULL,       3,  1,  1,  3,  JOF_CONST|JOF_NAME|JOF_SET|JOF_ASSIGNING|JOF_DETECTING)
OPDEF(JSOP_INCGVAR,       156,"incgvar",  NULL,       3,  0,  1, 15,  JOF_CONST|JOF_NAME|JOF_INC)
OPDEF(JSOP_DECGVAR,       157,"decgvar",  NULL,       3,  0,  1, 15,  JOF_CONST|JOF_NAME|JOF_DEC)
OPDEF(JSOP_GVARINC,       158,"gvarinc",  NULL,       3,  0,  1, 15,  JOF_CONST|JOF_NAME|JOF_INC|JOF_POST)
OPDEF(JSOP_GVARDEC,       159,"gvardec",  NULL,       3,  0,  1, 15,  JOF_CONST|JOF_NAME|JOF_DEC|JOF_POST)

/* Regular expression literal requiring special "fork on exec" handling. */
OPDEF(JSOP_REGEXP,        160,"regexp",   NULL,       3,  0,  1, 19,  JOF_CONST)

/* 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_CONST|JOF_XMLNAME)
OPDEF(JSOP_QNAMECONST,    164,"qnameconst", NULL,     3,  1,  1, 19,  JOF_CONST|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|JOF_ASSIGNING)
OPDEF(JSOP_SETXMLNAME,    171,"setxmlname", NULL,     1,  3,  1,  3,  JOF_BYTE|JOF_SET|JOF_ASSIGNING|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,     1,  1,  0, 18,  JOF_BYTE)
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_CONST)
OPDEF(JSOP_XMLCDATA,      181,"xmlcdata",   NULL,     3,  0,  1, 19,  JOF_CONST)
OPDEF(JSOP_XMLCOMMENT,    182,"xmlcomment", NULL,     3,  0,  1, 19,  JOF_CONST)
OPDEF(JSOP_XMLPI,         183,"xmlpi",      NULL,     3,  1,  1, 19,  JOF_CONST)
OPDEF(JSOP_GETMETHOD,     184,"getmethod",  NULL,     3,  1,  1, 18,  JOF_CONST|JOF_PROP)
OPDEF(JSOP_GETFUNNS,      185,"getfunns",   NULL,     1,  0,  1, 19,  JOF_BYTE)
OPDEF(JSOP_FOREACH,       186,"foreach",    NULL,     1,  1,  1,  0,  JOF_BYTE)
OPDEF(JSOP_DELDESC,       187,"deldesc",    NULL,     1,  2,  1, 17,  JOF_BYTE |JOF_ELEM|JOF_DEL)

/*
 * Opcodes for extended literal addressing, using unsigned 24-bit immediate
 * operands to hold integer operands (JSOP_UINT24), extended atom indexes in
 * script->atomMap (JSOP_LITERAL, JSOP_FINDNAME), and ops prefixed by such
 * atom index immediates (JSOP_LITOPX).  See jsemit.c, EmitAtomIndexOp.
 */
OPDEF(JSOP_UINT24,        188,"uint24",     NULL,     4,  0,  1, 16,  JOF_UINT24)
OPDEF(JSOP_LITERAL,       189,"literal",    NULL,     4,  0,  1, 19,  JOF_UINT24)
OPDEF(JSOP_FINDNAME,      190,"findname",   NULL,     4,  0,  2,  0,  JOF_UINT24)
OPDEF(JSOP_LITOPX,        191,"litopx",     NULL,     5,  0,  0,  0,  JOF_LITOPX)

/*
 * 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_SETMETHOD,     194,"setmethod",   NULL,    3,  2,  1,  3,  JOF_CONST|JOF_PROP|JOF_SET|JOF_ASSIGNING|JOF_DETECTING)

/*
 * 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 or element value, throwing ReferenceError if the
 * identified property does not exist.
 */
OPDEF(JSOP_GETXPROP,      196,"getxprop",    NULL,    3,  1,  1, 18,  JOF_CONST|JOF_PROP)
OPDEF(JSOP_GETXELEM,      197,"getxelem",    NULL,    1,  2,  1, 18,  JOF_BYTE |JOF_ELEM|JOF_LEFTASSOC)

/*
 * Specialized JSOP_TYPEOF to avoid reporting undefined for typeof(0, undef).
 */
OPDEF(JSOP_TYPEOFEXPR,    198,js_typeof_str, NULL,    1,  1,  1, 15,  JOF_BYTE|JOF_DETECTING)

/*
 * Block-local scope support.
 */
OPDEF(JSOP_ENTERBLOCK,    199,"enterblock",  NULL,    3,  0,  0,  0,  JOF_CONST)
OPDEF(JSOP_LEAVEBLOCK,    200,"leaveblock",  NULL,    3,  0,  0,  0,  JOF_UINT16)
OPDEF(JSOP_GETLOCAL,      201,"getlocal",    NULL,    3,  0,  1, 19,  JOF_LOCAL|JOF_NAME)
OPDEF(JSOP_SETLOCAL,      202,"setlocal",    NULL,    3,  1,  1,  3,  JOF_LOCAL|JOF_NAME|JOF_SET)
OPDEF(JSOP_INCLOCAL,      203,"inclocal",    NULL,    3,  0,  1, 15,  JOF_LOCAL|JOF_NAME|JOF_INC)
OPDEF(JSOP_DECLOCAL,      204,"declocal",    NULL,    3,  0,  1, 15,  JOF_LOCAL|JOF_NAME|JOF_DEC)
OPDEF(JSOP_LOCALINC,      205,"localinc",    NULL,    3,  0,  1, 15,  JOF_LOCAL|JOF_NAME|JOF_INC|JOF_POST)
OPDEF(JSOP_LOCALDEC,      206,"localdec",    NULL,    3,  0,  1, 15,  JOF_LOCAL|JOF_NAME|JOF_DEC|JOF_POST)
OPDEF(JSOP_FORLOCAL,      207,"forlocal",    NULL,    3,  0,  1, 19,  JOF_LOCAL|JOF_NAME|JOF_FOR)

/*
 * Iterator, generator, and array comprehension support.
 */
OPDEF(JSOP_STARTITER,     208,"startiter",   NULL,    1,  0,  0,  0,  JOF_BYTE)
OPDEF(JSOP_ENDITER,       209,"enditer",     NULL,    1,  1,  0,  0,  JOF_BYTE)
OPDEF(JSOP_GENERATOR,     210,"generator",   NULL,    1,  0,  0,  0,  JOF_BYTE)
OPDEF(JSOP_YIELD,         211,"yield",       NULL,    1,  1,  1,  1,  JOF_BYTE)
OPDEF(JSOP_ARRAYPUSH,     212,"arraypush",   NULL,    3,  1,  0,  3,  JOF_LOCAL)

OPDEF(JSOP_FOREACHKEYVAL, 213,"foreachkeyval",NULL,   1,  1,  1,  0,  JOF_BYTE)

/*
 * Variant of JSOP_ENUMELEM for destructuring const (const [a, b] = ...).
 */
OPDEF(JSOP_ENUMCONSTELEM, 214,"enumconstelem",NULL,   1,  3,  0,  3,  JOF_BYTE|JOF_SET|JOF_ASSIGNING)

/*
 * 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,215,"leaveblockexpr",NULL,  3,  0,  0,  1,  JOF_UINT16)