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375 lines
20 KiB
C
375 lines
20 KiB
C
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=8 sw=4 et tw=99:
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla SpiderMonkey JavaScript 1.9 code, released
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* May 28, 2008.
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*
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* The Initial Developer of the Original Code is
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* Mozilla Corporation.
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*
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* Contributor(s):
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* Jason Orendorff <jorendorff@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef jsbuiltins_h___
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#define jsbuiltins_h___
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#ifdef JS_TRACER
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#include "nanojit/nanojit.h"
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#include "jstracer.h"
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#ifdef THIS
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#undef THIS
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#endif
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enum JSTNErrType { INFALLIBLE, FAIL_NULL, FAIL_NEG, FAIL_VOID, FAIL_JSVAL };
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enum { JSTN_ERRTYPE_MASK = 7, JSTN_MORE = 8 };
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#define JSTN_ERRTYPE(jstn) ((jstn)->flags & JSTN_ERRTYPE_MASK)
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/*
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* |prefix| and |argtypes| declare what arguments should be passed to the
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* native function. |prefix| can contain the following characters:
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*
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* 'C': a JSContext* argument
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* 'T': |this| as a JSObject* argument (bails if |this| is not an object)
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* 'S': |this| as a JSString* argument (bails if |this| is not a string)
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* 'R': a JSRuntime* argument
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* 'P': the pc as a jsbytecode*
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* 'D': |this| as a number (jsdouble)
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* 'f': the function being called, as a JSObject*
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* 'p': the .prototype of the function, as a JSObject*
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*
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* The corresponding things will get passed as arguments to the builtin in
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* reverse order (so TC means JSContext* as the first arg, and the
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* JSObject* for |this| as the second arg).
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*
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* |argtypes| can contain the following characters:
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* 'd': a number (double) argument
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* 'i': an integer argument
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* 's': a JSString* argument
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* 'o': a JSObject* argument
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* 'r': a JSObject* argument that is of class js_RegExpClass
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* 'f': a JSObject* argument that is of class js_FunctionClass
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* 'v': a jsval argument (boxing whatever value is actually being passed in)
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*/
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struct JSTraceableNative {
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JSFastNative native;
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const nanojit::CallInfo *builtin;
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const char *prefix;
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const char *argtypes;
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uintN flags; /* JSTN_MORE | JSTNErrType */
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};
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/*
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* We use a magic boxed pointer value to represent error conditions that
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* trigger a side exit. The address is so low that it should never be actually
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* in use. If it is, a performance regression occurs, not an actual runtime
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* error.
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*/
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#define JSVAL_ERROR_COOKIE OBJECT_TO_JSVAL((void*)0x10)
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/* Macros used by JS_DEFINE_CALLINFOn. */
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#ifdef DEBUG
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#define _JS_CI_NAME(op) ,#op
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#else
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#define _JS_CI_NAME(op)
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#endif
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#define _JS_I32_ARGSIZE nanojit::ARGSIZE_LO
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#define _JS_I32_RETSIZE nanojit::ARGSIZE_LO
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#define _JS_F64_ARGSIZE nanojit::ARGSIZE_F
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#define _JS_F64_RETSIZE nanojit::ARGSIZE_F
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#define _JS_PTR_ARGSIZE nanojit::ARGSIZE_LO
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#if defined AVMPLUS_64BIT
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# define _JS_PTR_RETSIZE nanojit::ARGSIZE_Q
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#else
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# define _JS_PTR_RETSIZE nanojit::ARGSIZE_LO
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#endif
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/*
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* Supported types for builtin functions.
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*
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* Types with -- for the two string fields are not permitted as argument types
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* in JS_DEFINE_TRCINFO.
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*
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* If a traceable native can fail, the values that indicate failure are part of
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* the return type:
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* JSVAL_FAIL: JSVAL_ERROR_COOKIE
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* BOOL_FAIL: JSVAL_TO_BOOLEAN(JSVAL_VOID)
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* INT32_FAIL: any negative value
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* STRING_FAIL: NULL
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* OBJECT_FAIL_NULL: NULL
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*
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* Special builtins known to the tracer can have their own idiosyncratic
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* error codes.
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*
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* When a traceable native returns a value indicating failure, we fall off
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* trace. If an exception is pending, it is thrown; otherwise, we assume the
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* builtin had no side effects and retry the current bytecode in the
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* interpreter.
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*
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* So a builtin must not return a value indicating failure after causing side
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* effects (such as reporting an error), without setting an exception pending.
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* The operation would be retried, despite the first attempt's observable
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* effects.
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*/
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#define _JS_CTYPE(ctype, size, pch, ach, flags) (ctype, size, pch, ach, flags)
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#define _JS_CTYPE_CONTEXT _JS_CTYPE(JSContext *, _JS_PTR,"C", "", INFALLIBLE)
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#define _JS_CTYPE_RUNTIME _JS_CTYPE(JSRuntime *, _JS_PTR,"R", "", INFALLIBLE)
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#define _JS_CTYPE_THIS _JS_CTYPE(JSObject *, _JS_PTR,"T", "", INFALLIBLE)
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#define _JS_CTYPE_THIS_DOUBLE _JS_CTYPE(jsdouble, _JS_F64,"D", "", INFALLIBLE)
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#define _JS_CTYPE_THIS_STRING _JS_CTYPE(JSString *, _JS_PTR,"S", "", INFALLIBLE)
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#define _JS_CTYPE_PC _JS_CTYPE(jsbytecode *, _JS_PTR,"P", "", INFALLIBLE)
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#define _JS_CTYPE_JSVAL _JS_CTYPE(jsval, _JS_PTR, "","v", INFALLIBLE)
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#define _JS_CTYPE_JSVAL_FAIL _JS_CTYPE(jsval, _JS_PTR, --, --, FAIL_JSVAL)
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#define _JS_CTYPE_BOOL _JS_CTYPE(JSBool, _JS_I32, "","i", INFALLIBLE)
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#define _JS_CTYPE_BOOL_FAIL _JS_CTYPE(int32, _JS_I32, --, --, FAIL_VOID)
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#define _JS_CTYPE_INT32 _JS_CTYPE(int32, _JS_I32, "","i", INFALLIBLE)
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#define _JS_CTYPE_INT32_FAIL _JS_CTYPE(int32, _JS_I32, --, --, FAIL_NEG)
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#define _JS_CTYPE_UINT32 _JS_CTYPE(uint32, _JS_I32, --, --, INFALLIBLE)
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#define _JS_CTYPE_DOUBLE _JS_CTYPE(jsdouble, _JS_F64, "","d", INFALLIBLE)
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#define _JS_CTYPE_STRING _JS_CTYPE(JSString *, _JS_PTR, "","s", INFALLIBLE)
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#define _JS_CTYPE_STRING_FAIL _JS_CTYPE(JSString *, _JS_PTR, --, --, FAIL_NULL)
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#define _JS_CTYPE_OBJECT _JS_CTYPE(JSObject *, _JS_PTR, "","o", INFALLIBLE)
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#define _JS_CTYPE_OBJECT_FAIL_NULL _JS_CTYPE(JSObject *, _JS_PTR, --, --, FAIL_NULL)
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#define _JS_CTYPE_REGEXP _JS_CTYPE(JSObject *, _JS_PTR, "","r", INFALLIBLE)
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#define _JS_CTYPE_SCOPEPROP _JS_CTYPE(JSScopeProperty *, _JS_PTR, --, --, INFALLIBLE)
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#define _JS_CTYPE_SIDEEXIT _JS_CTYPE(SideExit *, _JS_PTR, --, --, INFALLIBLE)
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#define _JS_CTYPE_INTERPSTATE _JS_CTYPE(InterpState *, _JS_PTR, --, --, INFALLIBLE)
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#define _JS_CTYPE_FRAGMENT _JS_CTYPE(nanojit::Fragment *, _JS_PTR, --, --, INFALLIBLE)
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#define _JS_EXPAND(tokens) tokens
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#define _JS_CTYPE_TYPE2(t,s,p,a,f) t
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#define _JS_CTYPE_TYPE(tyname) _JS_EXPAND(_JS_CTYPE_TYPE2 _JS_CTYPE_##tyname)
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#define _JS_CTYPE_RETSIZE2(t,s,p,a,f) s##_RETSIZE
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#define _JS_CTYPE_RETSIZE(tyname) _JS_EXPAND(_JS_CTYPE_RETSIZE2 _JS_CTYPE_##tyname)
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#define _JS_CTYPE_ARGSIZE2(t,s,p,a,f) s##_ARGSIZE
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#define _JS_CTYPE_ARGSIZE(tyname) _JS_EXPAND(_JS_CTYPE_ARGSIZE2 _JS_CTYPE_##tyname)
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#define _JS_CTYPE_PCH2(t,s,p,a,f) p
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#define _JS_CTYPE_PCH(tyname) _JS_EXPAND(_JS_CTYPE_PCH2 _JS_CTYPE_##tyname)
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#define _JS_CTYPE_ACH2(t,s,p,a,f) a
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#define _JS_CTYPE_ACH(tyname) _JS_EXPAND(_JS_CTYPE_ACH2 _JS_CTYPE_##tyname)
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#define _JS_CTYPE_FLAGS2(t,s,p,a,f) f
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#define _JS_CTYPE_FLAGS(tyname) _JS_EXPAND(_JS_CTYPE_FLAGS2 _JS_CTYPE_##tyname)
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#define _JS_static_TN(t) static t
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#define _JS_static_CI static
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#define _JS_extern_TN(t) extern t
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#define _JS_extern_CI
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#define _JS_FRIEND_TN(t) extern JS_FRIEND_API(t)
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#define _JS_FRIEND_CI
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#define _JS_TN_LINKAGE(linkage, t) _JS_##linkage##_TN(t)
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#define _JS_CI_LINKAGE(linkage) _JS_##linkage##_CI
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#define _JS_CALLINFO(name) name##_ci
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#if defined(JS_NO_FASTCALL) && defined(NANOJIT_IA32)
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#define _JS_DEFINE_CALLINFO(linkage, name, crtype, cargtypes, argtypes, cse, fold) \
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_JS_TN_LINKAGE(linkage, crtype) name cargtypes; \
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_JS_CI_LINKAGE(linkage) const nanojit::CallInfo _JS_CALLINFO(name) = \
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{ (intptr_t) &name, argtypes, cse, fold, nanojit::ABI_CDECL _JS_CI_NAME(name) };
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#else
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#define _JS_DEFINE_CALLINFO(linkage, name, crtype, cargtypes, argtypes, cse, fold) \
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_JS_TN_LINKAGE(linkage, crtype) FASTCALL name cargtypes; \
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_JS_CI_LINKAGE(linkage) const nanojit::CallInfo _JS_CALLINFO(name) = \
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{ (intptr_t) &name, argtypes, cse, fold, nanojit::ABI_FASTCALL _JS_CI_NAME(name) };
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#endif
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/*
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* Declare a C function named <op> and a CallInfo struct named <op>_callinfo so the
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* tracer can call it. |linkage| controls the visibility of both the function
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* and the CallInfo global. It can be extern, static, or FRIEND, which
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* specifies JS_FRIEND_API linkage for the function.
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*/
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#define JS_DEFINE_CALLINFO_1(linkage, rt, op, at0, cse, fold) \
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_JS_DEFINE_CALLINFO(linkage, op, _JS_CTYPE_TYPE(rt), (_JS_CTYPE_TYPE(at0)), \
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(_JS_CTYPE_ARGSIZE(at0) << 2) | _JS_CTYPE_RETSIZE(rt), cse, fold)
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#define JS_DEFINE_CALLINFO_2(linkage, rt, op, at0, at1, cse, fold) \
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_JS_DEFINE_CALLINFO(linkage, op, _JS_CTYPE_TYPE(rt), \
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(_JS_CTYPE_TYPE(at0), _JS_CTYPE_TYPE(at1)), \
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(_JS_CTYPE_ARGSIZE(at0) << 4) | (_JS_CTYPE_ARGSIZE(at1) << 2) | \
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_JS_CTYPE_RETSIZE(rt), \
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cse, fold)
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#define JS_DEFINE_CALLINFO_3(linkage, rt, op, at0, at1, at2, cse, fold) \
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_JS_DEFINE_CALLINFO(linkage, op, _JS_CTYPE_TYPE(rt), \
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(_JS_CTYPE_TYPE(at0), _JS_CTYPE_TYPE(at1), _JS_CTYPE_TYPE(at2)), \
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(_JS_CTYPE_ARGSIZE(at0) << 6) | (_JS_CTYPE_ARGSIZE(at1) << 4) | \
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(_JS_CTYPE_ARGSIZE(at2) << 2) | _JS_CTYPE_RETSIZE(rt), \
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cse, fold)
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#define JS_DEFINE_CALLINFO_4(linkage, rt, op, at0, at1, at2, at3, cse, fold) \
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_JS_DEFINE_CALLINFO(linkage, op, _JS_CTYPE_TYPE(rt), \
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(_JS_CTYPE_TYPE(at0), _JS_CTYPE_TYPE(at1), _JS_CTYPE_TYPE(at2), \
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_JS_CTYPE_TYPE(at3)), \
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(_JS_CTYPE_ARGSIZE(at0) << 8) | (_JS_CTYPE_ARGSIZE(at1) << 6) | \
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(_JS_CTYPE_ARGSIZE(at2) << 4) | (_JS_CTYPE_ARGSIZE(at3) << 2) | \
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_JS_CTYPE_RETSIZE(rt), \
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cse, fold)
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#define JS_DEFINE_CALLINFO_5(linkage, rt, op, at0, at1, at2, at3, at4, cse, fold) \
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_JS_DEFINE_CALLINFO(linkage, op, _JS_CTYPE_TYPE(rt), \
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(_JS_CTYPE_TYPE(at0), _JS_CTYPE_TYPE(at1), _JS_CTYPE_TYPE(at2), \
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_JS_CTYPE_TYPE(at3), _JS_CTYPE_TYPE(at4)), \
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(_JS_CTYPE_ARGSIZE(at0) << 10) | (_JS_CTYPE_ARGSIZE(at1) << 8) | \
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(_JS_CTYPE_ARGSIZE(at2) << 6) | (_JS_CTYPE_ARGSIZE(at3) << 4) | \
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(_JS_CTYPE_ARGSIZE(at4) << 2) | _JS_CTYPE_RETSIZE(rt), \
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cse, fold)
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#define JS_DECLARE_CALLINFO(name) extern const nanojit::CallInfo _JS_CALLINFO(name);
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#define _JS_TN_INIT_HELPER_n(n, args) _JS_TN_INIT_HELPER_##n args
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#define _JS_TN_INIT_HELPER_1(linkage, rt, op, at0, cse, fold) \
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&_JS_CALLINFO(op), \
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_JS_CTYPE_PCH(at0), \
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_JS_CTYPE_ACH(at0), \
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_JS_CTYPE_FLAGS(rt)
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#define _JS_TN_INIT_HELPER_2(linkage, rt, op, at0, at1, cse, fold) \
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&_JS_CALLINFO(op), \
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_JS_CTYPE_PCH(at1) _JS_CTYPE_PCH(at0), \
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_JS_CTYPE_ACH(at0) _JS_CTYPE_ACH(at1), \
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_JS_CTYPE_FLAGS(rt)
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#define _JS_TN_INIT_HELPER_3(linkage, rt, op, at0, at1, at2, cse, fold) \
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&_JS_CALLINFO(op), \
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_JS_CTYPE_PCH(at2) _JS_CTYPE_PCH(at1) _JS_CTYPE_PCH(at0), \
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_JS_CTYPE_ACH(at0) _JS_CTYPE_ACH(at1) _JS_CTYPE_ACH(at2), \
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_JS_CTYPE_FLAGS(rt)
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#define _JS_TN_INIT_HELPER_4(linkage, rt, op, at0, at1, at2, at3, cse, fold) \
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&_JS_CALLINFO(op), \
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_JS_CTYPE_PCH(at3) _JS_CTYPE_PCH(at2) _JS_CTYPE_PCH(at1) _JS_CTYPE_PCH(at0), \
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_JS_CTYPE_ACH(at0) _JS_CTYPE_ACH(at1) _JS_CTYPE_ACH(at2) _JS_CTYPE_ACH(at3), \
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_JS_CTYPE_FLAGS(rt)
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#define _JS_TN_INIT_HELPER_5(linkage, rt, op, at0, at1, at2, at3, at4, cse, fold) \
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&_JS_CALLINFO(op), \
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_JS_CTYPE_PCH(at4) _JS_CTYPE_PCH(at3) _JS_CTYPE_PCH(at2) _JS_CTYPE_PCH(at1) \
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_JS_CTYPE_PCH(at0), \
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_JS_CTYPE_ACH(at0) _JS_CTYPE_ACH(at1) _JS_CTYPE_ACH(at2) _JS_CTYPE_ACH(at3) \
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_JS_CTYPE_ACH(at4), \
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_JS_CTYPE_FLAGS(rt)
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#define JS_DEFINE_TRCINFO_1(name, tn0) \
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_JS_DEFINE_CALLINFO_n tn0 \
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JSTraceableNative name##_trcinfo[] = { \
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{ name, _JS_TN_INIT_HELPER_n tn0 } \
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};
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#define JS_DEFINE_TRCINFO_2(name, tn0, tn1) \
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_JS_DEFINE_CALLINFO_n tn0 \
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_JS_DEFINE_CALLINFO_n tn1 \
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JSTraceableNative name##_trcinfo[] = { \
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{ name, _JS_TN_INIT_HELPER_n tn0 | JSTN_MORE }, \
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{ name, _JS_TN_INIT_HELPER_n tn1 } \
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};
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#define JS_DEFINE_TRCINFO_3(name, tn0, tn1, tn2) \
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_JS_DEFINE_CALLINFO_n tn0 \
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_JS_DEFINE_CALLINFO_n tn1 \
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_JS_DEFINE_CALLINFO_n tn2 \
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JSTraceableNative name##_trcinfo[] = { \
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{ name, _JS_TN_INIT_HELPER_n tn0 | JSTN_MORE }, \
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{ name, _JS_TN_INIT_HELPER_n tn1 | JSTN_MORE }, \
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{ name, _JS_TN_INIT_HELPER_n tn2 } \
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};
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#define JS_DEFINE_TRCINFO_4(name, tn0, tn1, tn2, tn3) \
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_JS_DEFINE_CALLINFO_n tn0 \
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_JS_DEFINE_CALLINFO_n tn1 \
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_JS_DEFINE_CALLINFO_n tn2 \
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_JS_DEFINE_CALLINFO_n tn3 \
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JSTraceableNative name##_trcinfo[] = { \
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{ name, _JS_TN_INIT_HELPER_n tn0 | JSTN_MORE }, \
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{ name, _JS_TN_INIT_HELPER_n tn1 | JSTN_MORE }, \
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{ name, _JS_TN_INIT_HELPER_n tn2 | JSTN_MORE }, \
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{ name, _JS_TN_INIT_HELPER_n tn3 } \
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};
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#define _JS_DEFINE_CALLINFO_n(n, args) JS_DEFINE_CALLINFO_##n args
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jsdouble FASTCALL
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js_StringToNumber(JSContext* cx, JSString* str);
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jsdouble FASTCALL
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js_BooleanOrUndefinedToNumber(JSContext* cx, int32 unboxed);
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#else
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#define JS_DEFINE_CALLINFO_1(linkage, rt, op, at0, cse, fold)
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#define JS_DEFINE_CALLINFO_2(linkage, rt, op, at0, at1, cse, fold)
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#define JS_DEFINE_CALLINFO_3(linkage, rt, op, at0, at1, at2, cse, fold)
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#define JS_DEFINE_CALLINFO_4(linkage, rt, op, at0, at1, at2, at3, cse, fold)
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#define JS_DEFINE_CALLINFO_5(linkage, rt, op, at0, at1, at2, at3, at4, cse, fold)
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#define JS_DECLARE_CALLINFO(name)
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#define JS_DEFINE_TRCINFO_1(name, tn0)
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#define JS_DEFINE_TRCINFO_2(name, tn0, tn1)
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#define JS_DEFINE_TRCINFO_3(name, tn0, tn1, tn2)
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#define JS_DEFINE_TRCINFO_4(name, tn0, tn1, tn2, tn3)
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#endif /* !JS_TRACER */
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/* Defined in jsarray.cpp */
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JS_DECLARE_CALLINFO(js_Array_dense_setelem)
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JS_DECLARE_CALLINFO(js_FastNewArray)
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JS_DECLARE_CALLINFO(js_NewUninitializedArray)
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JS_DECLARE_CALLINFO(js_FastNewArrayWithLength)
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JS_DECLARE_CALLINFO(js_Array_1str)
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/* Defined in jsdate.cpp */
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JS_DECLARE_CALLINFO(js_FastNewDate)
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/* Defined in jsnum.cpp */
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JS_DECLARE_CALLINFO(js_NumberToString)
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/* Defined in jsstr.cpp */
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JS_DECLARE_CALLINFO(js_ConcatStrings)
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JS_DECLARE_CALLINFO(js_String_getelem)
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JS_DECLARE_CALLINFO(js_String_p_charCodeAt)
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JS_DECLARE_CALLINFO(js_EqualStrings)
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JS_DECLARE_CALLINFO(js_CompareStrings)
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/* Defined in jsbuiltins.cpp */
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#define BUILTIN1(linkage, rt, op, at0, cse, fold) JS_DECLARE_CALLINFO(op)
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#define BUILTIN2(linkage, rt, op, at0, at1, cse, fold) JS_DECLARE_CALLINFO(op)
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#define BUILTIN3(linkage, rt, op, at0, at1, at2, cse, fold) JS_DECLARE_CALLINFO(op)
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#define BUILTIN4(linkage, rt, op, at0, at1, at2, at3, cse, fold) JS_DECLARE_CALLINFO(op)
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#define BUILTIN5(linkage, rt, op, at0, at1, at2, at3, at4, cse, fold) JS_DECLARE_CALLINFO(op)
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#include "builtins.tbl"
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#undef BUILTIN
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#undef BUILTIN1
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#undef BUILTIN2
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#undef BUILTIN3
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#undef BUILTIN4
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#undef BUILTIN5
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#endif /* jsbuiltins_h___ */
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