jsopcode.tbl

Swfdec still is development software, but has also followed a rigid no-crashes-allowed policy. I b

/* 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|JOF_ASSIGNING)
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|JOF_ASSIGNING|JOF_DETECTING)

/* 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|JOF_DETECTING)
OPDEF(JSOP_INITELEM,  92, "initelem",   NULL,         1,  2,  0,  0,  JOF_BYTE |JOF_ELEM|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 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_FORNAME,   104,"forname",    NULL,         3,  0,  1,  0,  JOF_CONST|JOF_NAME|JOF_FOR)
OPDEF(JSOP_FORPROP,   105,"forprop",    NULL,         3,  1,  1,  0,  JOF_CONST|JOF_PROP|JOF_FOR)
OPDEF(JSOP_FORELEM,   106,"forelem",    NULL,         1,  2,  4,  0,  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,  1,  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,  6,  JOF_BYTE|JOF_LEFTASSOC)
OPDEF(JSOP_INSTANCEOF,112,js_instanceof_str,js_instanceof_str,1,2,1,6,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,  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.
 * 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, 11,  JOF_UINT16)

/*
 * ECMA-compliant helper for 'for (x[i] in o)' loops.
 */
OPDEF(JSOP_ENUMELEM,  122,"enumelem",   NULL,         1,  3,  0,  1,  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,js_getter_str,1,  0,  0,  0,  JOF_BYTE)
OPDEF(JSOP_SETTER,    124,js_setter_str,js_setter_str,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_NAME|JOF_DECLARING)
OPDEF(JSOP_DEFVAR,    127,"defvar",     NULL,         3,  0,  0,  0,  JOF_CONST|JOF_NAME|JOF_DECLARING)

/* Auto-clone (if needed due to re-parenting) and push an anonymous function. */
OPDEF(JSOP_ANONFUNOBJ,  128, "anonfunobj",  NULL,     3,  0,  1, 12,  JOF_CONST)

/* ECMA ed. 3 named function expression. */
OPDEF(JSOP_NAMEDFUNOBJ, 129, "namedfunobj", NULL,     3,  0,  1, 12,  JOF_CONST)

/* Like JSOP_INITPROP, but specialized to make a DontDelete property for ECMA ed. 3 catch variables. */
OPDEF(JSOP_INITCATCHVAR,130, "initcatchvar",NULL,     3,  1,  0,  0,  JOF_CONST|JOF_PROP)

/* 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, 11,  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.
 * N.B. JSOP_SWAP doesn't swap the corresponding pc stack generating pcs, as
 * they're not needed for the current use of preserving the top-of-stack return
 * value when popping scopes while returning from catch blocks.
 */
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, 12,  JOF_QARG |JOF_NAME)
OPDEF(JSOP_ARGCNT,      137,"argcnt",     NULL,       1,  0,  1, 12,  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_DEFLOCALVAR|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,  0,  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,  0,  JOF_JUMPX|JOF_DETECTING)
OPDEF(JSOP_ANDX,          143,"andx",     NULL,       5,  1,  0,  0,  JOF_JUMPX|JOF_DETECTING)
OPDEF(JSOP_GOSUBX,        144,"gosubx",   NULL,       5,  0,  1,  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)
OPDEF(JSOP_LOOKUPSWITCHX, 148,"lookupswitchx",NULL,  -1,  1,  0,  0,  JOF_LOOKUPSWITCHX)

/* 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)
OPDEF(JSOP_BACKPATCH_PUSH,151,"backpatch_push",NULL,  3,  0,  1,  0,  JOF_JUMP|JOF_BACKPATCH)

/* 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)

/* Custom Flash opcodes */
OPDEF(JSOP_FLASHCALL,     154,"flashcall",NULL,       1,  -1, 1, 11,  JOF_BYTE)
OPDEF(JSOP_FLASHSWAP,     155,"flashswap",NULL,       3,  1,  1, 0,   JOF_UINT16)