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/* -*- 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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* Andreas Gal <gal@mozilla.com> |
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* |
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* Contributor(s): |
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* Brendan Eich <brendan@mozilla.org> |
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* Mike Shaver <shaver@mozilla.org> |
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* David Anderson <danderson@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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|
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#include "jsstddef.h" |
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#include <math.h> |
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|
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#include "jsapi.h" |
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#include "jsarray.h" |
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#include "jsbool.h" |
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#include "jscntxt.h" |
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#include "jsgc.h" |
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#include "jsiter.h" |
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#include "jslibmath.h" |
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#include "jsmath.h" |
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#include "jsnum.h" |
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#include "prmjtime.h" |
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#include "jsdate.h" |
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#include "jsscope.h" |
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#include "jsstr.h" |
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#include "jsbuiltins.h" |
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#include "jstracer.h" |
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|
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using namespace avmplus; |
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using namespace nanojit; |
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|
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extern jsdouble js_NaN; |
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|
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/* |
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* NB: bool FASTCALL is not compatible with Nanojit's calling convention usage. |
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* Do not use bool FASTCALL, use JSBool only! |
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*/ |
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|
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jsdouble FASTCALL |
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js_dmod(jsdouble a, jsdouble b) |
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{ |
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if (b == 0.0) { |
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jsdpun u; |
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u.s.hi = JSDOUBLE_HI32_EXPMASK | JSDOUBLE_HI32_MANTMASK; |
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u.s.lo = 0xffffffff; |
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return u.d; |
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} |
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jsdouble r; |
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#ifdef XP_WIN |
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/* Workaround MS fmod bug where 42 % (1/0) => NaN, not 42. */ |
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if (JSDOUBLE_IS_FINITE(a) && JSDOUBLE_IS_INFINITE(b)) |
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r = a; |
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else |
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#endif |
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r = fmod(a, b); |
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return r; |
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} |
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|
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int32 FASTCALL |
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js_imod(int32 a, int32 b) |
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{ |
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if (a < 0 || b <= 0) |
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return -1; |
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int r = a % b; |
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return r; |
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} |
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|
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/* The following boxing/unboxing primitives we can't emit inline because |
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they either interact with the GC and depend on Spidermonkey's 32-bit |
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integer representation. */ |
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|
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jsval FASTCALL |
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js_BoxDouble(JSContext* cx, jsdouble d) |
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{ |
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int32 i; |
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if (JSDOUBLE_IS_INT(d, i) && INT_FITS_IN_JSVAL(i)) |
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return INT_TO_JSVAL(i); |
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JS_ASSERT(JS_ON_TRACE(cx)); |
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jsval v; /* not rooted but ok here because we know GC won't run */ |
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if (!js_NewDoubleInRootedValue(cx, d, &v)) |
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return JSVAL_ERROR_COOKIE; |
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return v; |
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} |
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|
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jsval FASTCALL |
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js_BoxInt32(JSContext* cx, int32 i) |
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{ |
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if (JS_LIKELY(INT_FITS_IN_JSVAL(i))) |
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return INT_TO_JSVAL(i); |
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JS_ASSERT(JS_ON_TRACE(cx)); |
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jsval v; /* not rooted but ok here because we know GC won't run */ |
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jsdouble d = (jsdouble)i; |
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if (!js_NewDoubleInRootedValue(cx, d, &v)) |
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return JSVAL_ERROR_COOKIE; |
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return v; |
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} |
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|
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jsdouble FASTCALL |
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js_UnboxDouble(jsval v) |
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{ |
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if (JS_LIKELY(JSVAL_IS_INT(v))) |
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return (jsdouble)JSVAL_TO_INT(v); |
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return *JSVAL_TO_DOUBLE(v); |
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} |
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|
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int32 FASTCALL |
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js_UnboxInt32(jsval v) |
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{ |
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if (JS_LIKELY(JSVAL_IS_INT(v))) |
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return JSVAL_TO_INT(v); |
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return js_DoubleToECMAInt32(*JSVAL_TO_DOUBLE(v)); |
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} |
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|
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int32 FASTCALL |
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js_DoubleToInt32(jsdouble d) |
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{ |
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return js_DoubleToECMAInt32(d); |
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} |
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|
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uint32 FASTCALL |
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js_DoubleToUint32(jsdouble d) |
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{ |
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return js_DoubleToECMAUint32(d); |
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} |
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|
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jsdouble FASTCALL |
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js_StringToNumber(JSContext* cx, JSString* str) |
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{ |
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const jschar* bp; |
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const jschar* end; |
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const jschar* ep; |
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jsdouble d; |
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|
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JSSTRING_CHARS_AND_END(str, bp, end); |
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if ((!js_strtod(cx, bp, end, &ep, &d) || |
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js_SkipWhiteSpace(ep, end) != end) && |
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(!js_strtointeger(cx, bp, end, &ep, 0, &d) || |
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js_SkipWhiteSpace(ep, end) != end)) { |
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return js_NaN; |
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} |
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return d; |
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} |
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|
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int32 FASTCALL |
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js_StringToInt32(JSContext* cx, JSString* str) |
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{ |
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const jschar* bp; |
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const jschar* end; |
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const jschar* ep; |
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jsdouble d; |
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|
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JSSTRING_CHARS_AND_END(str, bp, end); |
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if (!js_strtod(cx, bp, end, &ep, &d) || js_SkipWhiteSpace(ep, end) != end) |
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return 0; |
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return js_DoubleToECMAInt32(d); |
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} |
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|
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static inline JSBool |
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js_Int32ToId(JSContext* cx, int32 index, jsid* id) |
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{ |
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if (index <= JSVAL_INT_MAX) { |
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*id = INT_TO_JSID(index); |
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return JS_TRUE; |
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} |
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JSString* str = js_NumberToString(cx, index); |
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if (!str) |
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return JS_FALSE; |
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return js_ValueToStringId(cx, STRING_TO_JSVAL(str), id); |
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} |
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|
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jsval FASTCALL |
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js_Any_getprop(JSContext* cx, JSObject* obj, JSString* idstr) |
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{ |
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jsval v; |
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jsid id; |
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|
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if (!js_ValueToStringId(cx, STRING_TO_JSVAL(idstr), &id)) |
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return JSVAL_ERROR_COOKIE; |
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if (!OBJ_GET_PROPERTY(cx, obj, id, &v)) |
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return JSVAL_ERROR_COOKIE; |
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return v; |
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} |
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|
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JSBool FASTCALL |
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js_Any_setprop(JSContext* cx, JSObject* obj, JSString* idstr, jsval v) |
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{ |
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jsid id; |
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if (!js_ValueToStringId(cx, STRING_TO_JSVAL(idstr), &id)) |
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return JS_FALSE; |
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return OBJ_SET_PROPERTY(cx, obj, id, &v); |
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} |
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|
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jsval FASTCALL |
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js_Any_getelem(JSContext* cx, JSObject* obj, int32 index) |
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{ |
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jsval v; |
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jsid id; |
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if (!js_Int32ToId(cx, index, &id)) |
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return JSVAL_ERROR_COOKIE; |
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if (!OBJ_GET_PROPERTY(cx, obj, id, &v)) |
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return JSVAL_ERROR_COOKIE; |
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return v; |
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} |
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|
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JSBool FASTCALL |
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js_Any_setelem(JSContext* cx, JSObject* obj, int32 index, jsval v) |
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{ |
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jsid id; |
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if (!js_Int32ToId(cx, index, &id)) |
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return JSVAL_ERROR_COOKIE; |
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return OBJ_SET_PROPERTY(cx, obj, id, &v); |
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} |
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|
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JSObject* FASTCALL |
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js_FastValueToIterator(JSContext* cx, jsuint flags, jsval v) |
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{ |
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if (!js_ValueToIterator(cx, flags, &v)) |
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return NULL; |
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return JSVAL_TO_OBJECT(v); |
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} |
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|
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jsval FASTCALL |
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js_FastCallIteratorNext(JSContext* cx, JSObject* iterobj) |
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{ |
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jsval v; |
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if (!js_CallIteratorNext(cx, iterobj, &v)) |
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return JSVAL_ERROR_COOKIE; |
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return v; |
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} |
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|
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SideExit* FASTCALL |
| 264 |
js_CallTree(InterpState* state, Fragment* f) |
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{ |
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union { NIns *code; GuardRecord* (FASTCALL *func)(InterpState*, Fragment*); } u; |
| 267 |
|
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u.code = f->code(); |
| 269 |
JS_ASSERT(u.code); |
| 270 |
|
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GuardRecord* rec; |
| 272 |
#if defined(JS_NO_FASTCALL) && defined(NANOJIT_IA32) |
| 273 |
SIMULATE_FASTCALL(rec, state, NULL, u.func); |
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#else |
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rec = u.func(state, NULL); |
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#endif |
| 277 |
VMSideExit* lr = (VMSideExit*)rec->exit; |
| 278 |
|
| 279 |
if (lr->exitType == NESTED_EXIT) { |
| 280 |
/* This only occurs once a tree call guard mismatches and we unwind the tree call stack. |
| 281 |
We store the first (innermost) tree call guard in state and we will try to grow |
| 282 |
the outer tree the failing call was in starting at that guard. */ |
| 283 |
if (!state->lastTreeCallGuard) { |
| 284 |
state->lastTreeCallGuard = lr; |
| 285 |
FrameInfo* rp = (FrameInfo*)state->rp; |
| 286 |
state->rpAtLastTreeCall = rp + lr->calldepth; |
| 287 |
} |
| 288 |
} else { |
| 289 |
/* If the tree exits on a regular (non-nested) guard, keep updating lastTreeExitGuard |
| 290 |
with that guard. If we mismatch on a tree call guard, this will contain the last |
| 291 |
non-nested guard we encountered, which is the innermost loop or branch guard. */ |
| 292 |
state->lastTreeExitGuard = lr; |
| 293 |
} |
| 294 |
|
| 295 |
return lr; |
| 296 |
} |
| 297 |
|
| 298 |
JSObject* FASTCALL |
| 299 |
js_FastNewObject(JSContext* cx, JSObject* ctor) |
| 300 |
{ |
| 301 |
JS_ASSERT(HAS_FUNCTION_CLASS(ctor)); |
| 302 |
JSFunction* fun = GET_FUNCTION_PRIVATE(cx, ctor); |
| 303 |
JSClass* clasp = (FUN_INTERPRETED(fun) || (fun->flags & JSFUN_TRACEABLE)) |
| 304 |
? &js_ObjectClass |
| 305 |
: FUN_CLASP(fun); |
| 306 |
JS_ASSERT(clasp != &js_ArrayClass); |
| 307 |
|
| 308 |
JS_LOCK_OBJ(cx, ctor); |
| 309 |
JSScope *scope = OBJ_SCOPE(ctor); |
| 310 |
JS_ASSERT(scope->object == ctor); |
| 311 |
JSAtom* atom = cx->runtime->atomState.classPrototypeAtom; |
| 312 |
|
| 313 |
JSScopeProperty *sprop = SCOPE_GET_PROPERTY(scope, ATOM_TO_JSID(atom)); |
| 314 |
JS_ASSERT(SPROP_HAS_VALID_SLOT(sprop, scope)); |
| 315 |
jsval v = LOCKED_OBJ_GET_SLOT(ctor, sprop->slot); |
| 316 |
JS_UNLOCK_SCOPE(cx, scope); |
| 317 |
|
| 318 |
JSObject* proto; |
| 319 |
if (JSVAL_IS_PRIMITIVE(v)) { |
| 320 |
if (!js_GetClassPrototype(cx, JSVAL_TO_OBJECT(ctor->fslots[JSSLOT_PARENT]), |
| 321 |
INT_TO_JSID(JSProto_Object), &proto)) { |
| 322 |
return NULL; |
| 323 |
} |
| 324 |
} else { |
| 325 |
proto = JSVAL_TO_OBJECT(v); |
| 326 |
} |
| 327 |
|
| 328 |
JS_ASSERT(JS_ON_TRACE(cx)); |
| 329 |
JSObject* obj = (JSObject*) js_NewGCThing(cx, GCX_OBJECT, sizeof(JSObject)); |
| 330 |
if (!obj) |
| 331 |
return NULL; |
| 332 |
|
| 333 |
obj->classword = jsuword(clasp); |
| 334 |
obj->fslots[JSSLOT_PROTO] = OBJECT_TO_JSVAL(proto); |
| 335 |
obj->fslots[JSSLOT_PARENT] = ctor->fslots[JSSLOT_PARENT]; |
| 336 |
for (unsigned i = JSSLOT_PRIVATE; i != JS_INITIAL_NSLOTS; ++i) |
| 337 |
obj->fslots[i] = JSVAL_VOID; |
| 338 |
|
| 339 |
obj->map = js_HoldObjectMap(cx, proto->map); |
| 340 |
obj->dslots = NULL; |
| 341 |
return obj; |
| 342 |
} |
| 343 |
|
| 344 |
JSBool FASTCALL |
| 345 |
js_AddProperty(JSContext* cx, JSObject* obj, JSScopeProperty* sprop) |
| 346 |
{ |
| 347 |
JSScopeProperty* sprop2 = NULL; // initialize early to make MSVC happy |
| 348 |
|
| 349 |
JS_ASSERT(OBJ_IS_NATIVE(obj)); |
| 350 |
JS_ASSERT(SPROP_HAS_STUB_SETTER(sprop)); |
| 351 |
|
| 352 |
JS_LOCK_OBJ(cx, obj); |
| 353 |
JSScope* scope = OBJ_SCOPE(obj); |
| 354 |
if (scope->object == obj) { |
| 355 |
JS_ASSERT(!SCOPE_HAS_PROPERTY(scope, sprop)); |
| 356 |
} else { |
| 357 |
scope = js_GetMutableScope(cx, obj); |
| 358 |
if (!scope) { |
| 359 |
JS_UNLOCK_OBJ(cx, obj); |
| 360 |
return JS_FALSE; |
| 361 |
} |
| 362 |
} |
| 363 |
|
| 364 |
uint32 slot = sprop->slot; |
| 365 |
if (!scope->table && sprop->parent == scope->lastProp && slot == scope->map.freeslot) { |
| 366 |
if (slot < STOBJ_NSLOTS(obj) && !OBJ_GET_CLASS(cx, obj)->reserveSlots) { |
| 367 |
JS_ASSERT(JSVAL_IS_VOID(STOBJ_GET_SLOT(obj, scope->map.freeslot))); |
| 368 |
++scope->map.freeslot; |
| 369 |
} else { |
| 370 |
if (!js_AllocSlot(cx, obj, &slot)) { |
| 371 |
JS_UNLOCK_SCOPE(cx, scope); |
| 372 |
return JS_FALSE; |
| 373 |
} |
| 374 |
|
| 375 |
if (slot != sprop->slot) |
| 376 |
goto slot_changed; |
| 377 |
} |
| 378 |
|
| 379 |
SCOPE_EXTEND_SHAPE(cx, scope, sprop); |
| 380 |
++scope->entryCount; |
| 381 |
scope->lastProp = sprop; |
| 382 |
JS_UNLOCK_SCOPE(cx, scope); |
| 383 |
return JS_TRUE; |
| 384 |
} |
| 385 |
|
| 386 |
sprop2 = js_AddScopeProperty(cx, scope, sprop->id, |
| 387 |
sprop->getter, sprop->setter, SPROP_INVALID_SLOT, |
| 388 |
sprop->attrs, sprop->flags, sprop->shortid); |
| 389 |
if (sprop2 == sprop) { |
| 390 |
JS_UNLOCK_SCOPE(cx, scope); |
| 391 |
return JS_TRUE; |
| 392 |
} |
| 393 |
slot = sprop2->slot; |
| 394 |
|
| 395 |
slot_changed: |
| 396 |
js_FreeSlot(cx, obj, slot); |
| 397 |
JS_UNLOCK_SCOPE(cx, scope); |
| 398 |
return JS_FALSE; |
| 399 |
} |
| 400 |
|
| 401 |
JSBool FASTCALL |
| 402 |
js_HasNamedProperty(JSContext* cx, JSObject* obj, JSString* idstr) |
| 403 |
{ |
| 404 |
jsid id; |
| 405 |
if (!obj || !js_ValueToStringId(cx, STRING_TO_JSVAL(idstr), &id)) |
| 406 |
return JSVAL_TO_BOOLEAN(JSVAL_VOID); |
| 407 |
|
| 408 |
JSObject* obj2; |
| 409 |
JSProperty* prop; |
| 410 |
if (!OBJ_LOOKUP_PROPERTY(cx, obj, id, &obj2, &prop)) |
| 411 |
return JSVAL_TO_BOOLEAN(JSVAL_VOID); |
| 412 |
if (prop) |
| 413 |
OBJ_DROP_PROPERTY(cx, obj2, prop); |
| 414 |
return prop != NULL; |
| 415 |
} |
| 416 |
|
| 417 |
JSBool FASTCALL |
| 418 |
js_HasNamedPropertyInt32(JSContext* cx, JSObject* obj, int32 index) |
| 419 |
{ |
| 420 |
jsid id; |
| 421 |
if (!obj || !js_Int32ToId(cx, index, &id)) |
| 422 |
return JSVAL_TO_BOOLEAN(JSVAL_VOID); |
| 423 |
|
| 424 |
JSObject* obj2; |
| 425 |
JSProperty* prop; |
| 426 |
if (!OBJ_LOOKUP_PROPERTY(cx, obj, id, &obj2, &prop)) |
| 427 |
return JSVAL_TO_BOOLEAN(JSVAL_VOID); |
| 428 |
if (prop) |
| 429 |
OBJ_DROP_PROPERTY(cx, obj2, prop); |
| 430 |
return prop != NULL; |
| 431 |
} |
| 432 |
|
| 433 |
jsval FASTCALL |
| 434 |
js_CallGetter(JSContext* cx, JSObject* obj, JSScopeProperty* sprop) |
| 435 |
{ |
| 436 |
JS_ASSERT(!SPROP_HAS_STUB_GETTER(sprop)); |
| 437 |
jsval v; |
| 438 |
if (!SPROP_GET(cx, sprop, obj, obj, &v)) |
| 439 |
return JSVAL_ERROR_COOKIE; |
| 440 |
return v; |
| 441 |
} |
| 442 |
|
| 443 |
JSString* FASTCALL |
| 444 |
js_TypeOfObject(JSContext* cx, JSObject* obj) |
| 445 |
{ |
| 446 |
JSType type = JS_TypeOfValue(cx, OBJECT_TO_JSVAL(obj)); |
| 447 |
return ATOM_TO_STRING(cx->runtime->atomState.typeAtoms[type]); |
| 448 |
} |
| 449 |
|
| 450 |
JSString* FASTCALL |
| 451 |
js_TypeOfBoolean(JSContext* cx, int32 unboxed) |
| 452 |
{ |
| 453 |
jsval boxed = BOOLEAN_TO_JSVAL(unboxed); |
| 454 |
JS_ASSERT(JSVAL_IS_VOID(boxed) || JSVAL_IS_BOOLEAN(boxed)); |
| 455 |
JSType type = JS_TypeOfValue(cx, boxed); |
| 456 |
return ATOM_TO_STRING(cx->runtime->atomState.typeAtoms[type]); |
| 457 |
} |
| 458 |
|
| 459 |
jsdouble FASTCALL |
| 460 |
js_BooleanOrUndefinedToNumber(JSContext* cx, int32 unboxed) |
| 461 |
{ |
| 462 |
if (unboxed == JSVAL_TO_BOOLEAN(JSVAL_VOID)) |
| 463 |
return js_NaN; |
| 464 |
return unboxed; |
| 465 |
} |
| 466 |
|
| 467 |
JSString* FASTCALL |
| 468 |
js_BooleanOrUndefinedToString(JSContext *cx, int32 unboxed) |
| 469 |
{ |
| 470 |
JS_ASSERT(uint32(unboxed) <= 2); |
| 471 |
return ATOM_TO_STRING(cx->runtime->atomState.booleanAtoms[unboxed]); |
| 472 |
} |
| 473 |
|
| 474 |
JSString* FASTCALL |
| 475 |
js_ObjectToString(JSContext* cx, JSObject* obj) |
| 476 |
{ |
| 477 |
if (!obj) |
| 478 |
return ATOM_TO_STRING(cx->runtime->atomState.nullAtom); |
| 479 |
jsval v; |
| 480 |
if (!OBJ_DEFAULT_VALUE(cx, obj, JSTYPE_STRING, &v)) |
| 481 |
return NULL; |
| 482 |
JS_ASSERT(JSVAL_IS_STRING(v)); |
| 483 |
return JSVAL_TO_STRING(v); |
| 484 |
} |
| 485 |
|
| 486 |
JSObject* FASTCALL |
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js_Arguments(JSContext* cx) |
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{ |
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return NULL; |
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} |
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|
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#define BUILTIN1 JS_DEFINE_CALLINFO_1 |
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#define BUILTIN2 JS_DEFINE_CALLINFO_2 |
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#define BUILTIN3 JS_DEFINE_CALLINFO_3 |
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#define BUILTIN4 JS_DEFINE_CALLINFO_4 |
| 496 |
#define BUILTIN5 JS_DEFINE_CALLINFO_5 |
| 497 |
#include "builtins.tbl" |
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