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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4; -*-
* vim: set ts=4 sw=4 et tw=99:
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla SpiderMonkey JavaScript 1.9 code, released
* May 28, 2008.
*
* The Initial Developer of the Original Code is
* Andreas Gal <gal@mozilla.com>
*
* Contributor(s):
* Brendan Eich <brendan@mozilla.org>
* Mike Shaver <shaver@mozilla.org>
* David Anderson <danderson@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include <math.h>
#include "jsapi.h"
#include "jsstdint.h"
#include "jsarray.h"
#include "jsbool.h"
#include "jscntxt.h"
#include "jsgc.h"
#include "jsiter.h"
#include "jsnum.h"
#include "jslibmath.h"
#include "jsmath.h"
#include "jsnum.h"
#include "prmjtime.h"
#include "jsdate.h"
#include "jsscope.h"
#include "jsstr.h"
#include "jsbuiltins.h"
#include "jstracer.h"
#include "jsvector.h"
#include "jsatominlines.h"
#include "jsobjinlines.h"
#include "jsscopeinlines.h"
using namespace avmplus;
using namespace nanojit;
using namespace js;
JS_FRIEND_API(void)
js_SetTraceableNativeFailed(JSContext *cx)
{
SetBuiltinError(cx);
}
/*
* NB: bool FASTCALL is not compatible with Nanojit's calling convention usage.
* Do not use bool FASTCALL, use JSBool only!
*/
jsdouble FASTCALL
js_dmod(jsdouble a, jsdouble b)
{
if (b == 0.0) {
jsdpun u;
u.s.hi = JSDOUBLE_HI32_EXPMASK | JSDOUBLE_HI32_MANTMASK;
u.s.lo = 0xffffffff;
return u.d;
}
return js_fmod(a, b);
}
JS_DEFINE_CALLINFO_2(extern, DOUBLE, js_dmod, DOUBLE, DOUBLE, 1, 1)
int32 FASTCALL
js_imod(int32 a, int32 b)
{
if (a < 0 || b <= 0)
return -1;
int r = a % b;
return r;
}
JS_DEFINE_CALLINFO_2(extern, INT32, js_imod, INT32, INT32, 1, 1)
/* The following boxing/unboxing primitives we can't emit inline because
they either interact with the GC and depend on Spidermonkey's 32-bit
integer representation. */
jsval FASTCALL
js_BoxDouble(JSContext* cx, jsdouble d)
{
int32 i;
if (JSDOUBLE_IS_INT(d, i) && INT_FITS_IN_JSVAL(i))
return INT_TO_JSVAL(i);
JS_ASSERT(JS_ON_TRACE(cx));
jsval v; /* not rooted but ok here because we know GC won't run */
if (!js_NewDoubleInRootedValue(cx, d, &v))
return JSVAL_ERROR_COOKIE;
return v;
}
JS_DEFINE_CALLINFO_2(extern, JSVAL, js_BoxDouble, CONTEXT, DOUBLE, 1, 1)
jsval FASTCALL
js_BoxInt32(JSContext* cx, int32 i)
{
if (JS_LIKELY(INT_FITS_IN_JSVAL(i)))
return INT_TO_JSVAL(i);
JS_ASSERT(JS_ON_TRACE(cx));
jsval v; /* not rooted but ok here because we know GC won't run */
jsdouble d = (jsdouble)i;
if (!js_NewDoubleInRootedValue(cx, d, &v))
return JSVAL_ERROR_COOKIE;
return v;
}
JS_DEFINE_CALLINFO_2(extern, JSVAL, js_BoxInt32, CONTEXT, INT32, 1, 1)
jsdouble FASTCALL
js_UnboxDouble(jsval v)
{
if (JS_LIKELY(JSVAL_IS_INT(v)))
return (jsdouble)JSVAL_TO_INT(v);
return *JSVAL_TO_DOUBLE(v);
}
JS_DEFINE_CALLINFO_1(extern, DOUBLE, js_UnboxDouble, JSVAL, 1, 1)
int32 FASTCALL
js_UnboxInt32(jsval v)
{
if (JS_LIKELY(JSVAL_IS_INT(v)))
return JSVAL_TO_INT(v);
return js_DoubleToECMAInt32(*JSVAL_TO_DOUBLE(v));
}
JS_DEFINE_CALLINFO_1(extern, INT32, js_UnboxInt32, JSVAL, 1, 1)
JSBool FASTCALL
js_TryUnboxInt32(jsval v, int32* i32p)
{
if (JS_LIKELY(JSVAL_IS_INT(v))) {
*i32p = JSVAL_TO_INT(v);
return JS_TRUE;
}
if (!JSVAL_IS_DOUBLE(v))
return JS_FALSE;
int32 i;
jsdouble d = *JSVAL_TO_DOUBLE(v);
if (!JSDOUBLE_IS_INT(d, i))
return JS_FALSE;
*i32p = i;
return JS_TRUE;
}
JS_DEFINE_CALLINFO_2(extern, BOOL, js_TryUnboxInt32, JSVAL, INT32PTR, 1, 1)
int32 FASTCALL
js_DoubleToInt32(jsdouble d)
{
return js_DoubleToECMAInt32(d);
}
JS_DEFINE_CALLINFO_1(extern, INT32, js_DoubleToInt32, DOUBLE, 1, 1)
uint32 FASTCALL
js_DoubleToUint32(jsdouble d)
{
return js_DoubleToECMAUint32(d);
}
JS_DEFINE_CALLINFO_1(extern, UINT32, js_DoubleToUint32, DOUBLE, 1, 1)
jsdouble FASTCALL
js_StringToNumber(JSContext* cx, JSString* str)
{
const jschar* bp;
const jschar* end;
const jschar* ep;
jsdouble d;
str->getCharsAndEnd(bp, end);
if ((!js_strtod(cx, bp, end, &ep, &d) ||
js_SkipWhiteSpace(ep, end) != end) &&
(!js_strtointeger(cx, bp, end, &ep, 0, &d) ||
js_SkipWhiteSpace(ep, end) != end)) {
return js_NaN;
}
return d;
}
JS_DEFINE_CALLINFO_2(extern, DOUBLE, js_StringToNumber, CONTEXT, STRING, 1, 1)
int32 FASTCALL
js_StringToInt32(JSContext* cx, JSString* str)
{
const jschar* bp;
const jschar* end;
const jschar* ep;
jsdouble d;
if (str->length() == 1) {
jschar c = str->chars()[0];
if ('0' <= c && c <= '9')
return c - '0';
return 0;
}
str->getCharsAndEnd(bp, end);
if ((!js_strtod(cx, bp, end, &ep, &d) ||
js_SkipWhiteSpace(ep, end) != end) &&
(!js_strtointeger(cx, bp, end, &ep, 0, &d) ||
js_SkipWhiteSpace(ep, end) != end)) {
return 0;
}
return js_DoubleToECMAInt32(d);
}
JS_DEFINE_CALLINFO_2(extern, INT32, js_StringToInt32, CONTEXT, STRING, 1, 1)
JSBool FASTCALL
js_AddProperty(JSContext* cx, JSObject* obj, JSScopeProperty* sprop)
{
JS_LOCK_OBJ(cx, obj);
uint32 slot = sprop->slot;
JSScope* scope = OBJ_SCOPE(obj);
if (slot != scope->freeslot)
goto exit_trace;
JS_ASSERT(sprop->parent == scope->lastProperty());
if (scope->isSharedEmpty()) {
scope = js_GetMutableScope(cx, obj);
if (!scope)
goto exit_trace;
} else {
JS_ASSERT(!scope->hasProperty(sprop));
}
if (!scope->table) {
if (slot < STOBJ_NSLOTS(obj) && !OBJ_GET_CLASS(cx, obj)->reserveSlots) {
JS_ASSERT(JSVAL_IS_VOID(STOBJ_GET_SLOT(obj, scope->freeslot)));
++scope->freeslot;
} else {
if (!js_AllocSlot(cx, obj, &slot))
goto exit_trace;
if (slot != sprop->slot) {
js_FreeSlot(cx, obj, slot);
goto exit_trace;
}
}
scope->extend(cx, sprop);
} else {
JSScopeProperty *sprop2 =
scope->addProperty(cx, sprop->id, sprop->getter, sprop->setter, SPROP_INVALID_SLOT,
sprop->attrs, sprop->getFlags(), sprop->shortid);
if (sprop2 != sprop)
goto exit_trace;
}
if (js_IsPropertyCacheDisabled(cx))
goto exit_trace;
JS_UNLOCK_SCOPE(cx, scope);
return JS_TRUE;
exit_trace:
JS_UNLOCK_SCOPE(cx, scope);
return JS_FALSE;
}
JS_DEFINE_CALLINFO_3(extern, BOOL, js_AddProperty, CONTEXT, OBJECT, SCOPEPROP, 0, 0)
static JSBool
HasProperty(JSContext* cx, JSObject* obj, jsid id)
{
// Check that we know how the lookup op will behave.
for (JSObject* pobj = obj; pobj; pobj = OBJ_GET_PROTO(cx, pobj)) {
if (pobj->map->ops->lookupProperty != js_LookupProperty)
return JSVAL_TO_SPECIAL(JSVAL_VOID);
JSClass* clasp = OBJ_GET_CLASS(cx, pobj);
if (clasp->resolve != JS_ResolveStub && clasp != &js_StringClass)
return JSVAL_TO_SPECIAL(JSVAL_VOID);
}
JSObject* obj2;
JSProperty* prop;
if (js_LookupPropertyWithFlags(cx, obj, id, JSRESOLVE_QUALIFIED, &obj2, &prop) < 0)
return JSVAL_TO_SPECIAL(JSVAL_VOID);
if (prop)
obj2->dropProperty(cx, prop);
return prop != NULL;
}
JSBool FASTCALL
js_HasNamedProperty(JSContext* cx, JSObject* obj, JSString* idstr)
{
jsid id;
if (!js_ValueToStringId(cx, STRING_TO_JSVAL(idstr), &id))
return JSVAL_TO_BOOLEAN(JSVAL_VOID);
return HasProperty(cx, obj, id);
}
JS_DEFINE_CALLINFO_3(extern, BOOL, js_HasNamedProperty, CONTEXT, OBJECT, STRING, 0, 0)
JSBool FASTCALL
js_HasNamedPropertyInt32(JSContext* cx, JSObject* obj, int32 index)
{
jsid id;
if (!js_Int32ToId(cx, index, &id))
return JSVAL_TO_BOOLEAN(JSVAL_VOID);
return HasProperty(cx, obj, id);
}
JS_DEFINE_CALLINFO_3(extern, BOOL, js_HasNamedPropertyInt32, CONTEXT, OBJECT, INT32, 0, 0)
JSString* FASTCALL
js_TypeOfObject(JSContext* cx, JSObject* obj)
{
if (!obj)
return ATOM_TO_STRING(cx->runtime->atomState.typeAtoms[JSTYPE_OBJECT]);
return ATOM_TO_STRING(cx->runtime->atomState.typeAtoms[obj->typeOf(cx)]);
}
JS_DEFINE_CALLINFO_2(extern, STRING, js_TypeOfObject, CONTEXT, OBJECT, 1, 1)
JSString* FASTCALL
js_TypeOfBoolean(JSContext* cx, int32 unboxed)
{
/* Watch out for pseudo-booleans. */
jsval boxed = SPECIAL_TO_JSVAL(unboxed);
JS_ASSERT(JSVAL_IS_VOID(boxed) || JSVAL_IS_BOOLEAN(boxed));
JSType type = JS_TypeOfValue(cx, boxed);
return ATOM_TO_STRING(cx->runtime->atomState.typeAtoms[type]);
}
JS_DEFINE_CALLINFO_2(extern, STRING, js_TypeOfBoolean, CONTEXT, INT32, 1, 1)
jsdouble FASTCALL
js_BooleanOrUndefinedToNumber(JSContext* cx, int32 unboxed)
{
if (unboxed == JSVAL_TO_SPECIAL(JSVAL_VOID))
return js_NaN;
JS_ASSERT(unboxed == JS_TRUE || unboxed == JS_FALSE);
return unboxed;
}
JS_DEFINE_CALLINFO_2(extern, DOUBLE, js_BooleanOrUndefinedToNumber, CONTEXT, INT32, 1, 1)
JSString* FASTCALL
js_BooleanOrUndefinedToString(JSContext *cx, int32 unboxed)
{
JS_ASSERT(uint32(unboxed) <= 2);
return ATOM_TO_STRING(cx->runtime->atomState.booleanAtoms[unboxed]);
}
JS_DEFINE_CALLINFO_2(extern, STRING, js_BooleanOrUndefinedToString, CONTEXT, INT32, 1, 1)
JSObject* FASTCALL
js_NewNullClosure(JSContext* cx, JSObject* funobj, JSObject* proto, JSObject* parent)
{
JS_ASSERT(HAS_FUNCTION_CLASS(funobj));
JS_ASSERT(HAS_FUNCTION_CLASS(proto));
JS_ASSERT(JS_ON_TRACE(cx));
JSFunction *fun = (JSFunction*) funobj;
JS_ASSERT(GET_FUNCTION_PRIVATE(cx, funobj) == fun);
JSObject* closure = js_NewGCObject(cx);
if (!closure)
return NULL;
closure->initSharingEmptyScope(&js_FunctionClass, proto, parent,
reinterpret_cast<jsval>(fun));
return closure;
}
JS_DEFINE_CALLINFO_4(extern, OBJECT, js_NewNullClosure, CONTEXT, OBJECT, OBJECT, OBJECT, 0, 0)
JS_REQUIRES_STACK JSBool FASTCALL
js_PopInterpFrame(JSContext* cx, InterpState* state)
{
JS_ASSERT(cx->fp && cx->fp->down);
JSInlineFrame* ifp = (JSInlineFrame*)cx->fp;
/*
* Mirror frame popping code from inline_return in js_Interpret. There are
* some things we just don't want to handle. In those cases, the trace will
* MISMATCH_EXIT.
*/
if (ifp->hookData)
return JS_FALSE;
if (cx->version != ifp->callerVersion)
return JS_FALSE;
if (cx->fp->flags & JSFRAME_CONSTRUCTING)
return JS_FALSE;
if (cx->fp->imacpc)
return JS_FALSE;
if (cx->fp->blockChain)
return JS_FALSE;
cx->fp->putActivationObjects(cx);
/* Update display table. */
if (cx->fp->script->staticLevel < JS_DISPLAY_SIZE)
cx->display[cx->fp->script->staticLevel] = cx->fp->displaySave;
/* Pop the frame and its memory. */
cx->fp = cx->fp->down;
JS_ASSERT(cx->fp->regs == &ifp->callerRegs);
cx->fp->regs = ifp->frame.regs;
JS_ARENA_RELEASE(&cx->stackPool, ifp->mark);
/* Update the inline call count. */
*state->inlineCallCountp = *state->inlineCallCountp - 1;
return JS_TRUE;
}
JS_DEFINE_CALLINFO_2(extern, BOOL, js_PopInterpFrame, CONTEXT, INTERPSTATE, 0, 0)
JSString* FASTCALL
js_ConcatN(JSContext *cx, JSString **strArray, uint32 size)
{
/* Calculate total size. */
size_t numChar = 1;
for (uint32 i = 0; i < size; ++i) {
size_t before = numChar;
numChar += strArray[i]->length();
if (numChar < before)
return NULL;
}
/* Allocate buffer. */
if (numChar & js::tl::MulOverflowMask<sizeof(jschar)>::result)
return NULL;
jschar *buf = (jschar *)cx->malloc(numChar * sizeof(jschar));
if (!buf)
return NULL;
/* Fill buffer. */
jschar *ptr = buf;
for (uint32 i = 0; i < size; ++i) {
const jschar *chars;
size_t length;
strArray[i]->getCharsAndLength(chars, length);
js_strncpy(ptr, chars, length);
ptr += length;
}
*ptr = '\0';
/* Create string. */
JSString *str = js_NewString(cx, buf, numChar - 1);
if (!str)
cx->free(buf);
return str;
}
JS_DEFINE_CALLINFO_3(extern, STRING, js_ConcatN, CONTEXT, STRINGPTR, UINT32, 0, 0)
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