1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/jit/BaselineIC.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,6261 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * vim: set ts=8 sts=4 et sw=4 tw=99:
1.6 + * This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#ifndef jit_BaselineIC_h
1.11 +#define jit_BaselineIC_h
1.12 +
1.13 +#ifdef JS_ION
1.14 +
1.15 +#include "mozilla/Assertions.h"
1.16 +
1.17 +#include "jscntxt.h"
1.18 +#include "jscompartment.h"
1.19 +#include "jsgc.h"
1.20 +#include "jsopcode.h"
1.21 +
1.22 +#include "jit/BaselineJIT.h"
1.23 +#include "jit/BaselineRegisters.h"
1.24 +
1.25 +namespace js {
1.26 +namespace jit {
1.27 +
1.28 +//
1.29 +// Baseline Inline Caches are polymorphic caches that aggressively
1.30 +// share their stub code.
1.31 +//
1.32 +// Every polymorphic site contains a linked list of stubs which are
1.33 +// specific to that site. These stubs are composed of a |StubData|
1.34 +// structure that stores parametrization information (e.g.
1.35 +// the shape pointer for a shape-check-and-property-get stub), any
1.36 +// dynamic information (e.g. use counts), a pointer to the stub code,
1.37 +// and a pointer to the next stub state in the linked list.
1.38 +//
1.39 +// Every BaselineScript keeps an table of |CacheDescriptor| data
1.40 +// structures, which store the following:
1.41 +// A pointer to the first StubData in the cache.
1.42 +// The bytecode PC of the relevant IC.
1.43 +// The machine-code PC where the call to the stubcode returns.
1.44 +//
1.45 +// A diagram:
1.46 +//
1.47 +// Control flow Pointers
1.48 +// =======# ----. .---->
1.49 +// # | |
1.50 +// #======> \-----/
1.51 +//
1.52 +//
1.53 +// .---------------------------------------.
1.54 +// | .-------------------------. |
1.55 +// | | .----. | |
1.56 +// Baseline | | | | | |
1.57 +// JIT Code 0 ^ 1 ^ 2 ^ | | |
1.58 +// +--------------+ .-->+-----+ +-----+ +-----+ | | |
1.59 +// | | #=|==>| |==>| |==>| FB | | | |
1.60 +// | | # | +-----+ +-----+ +-----+ | | |
1.61 +// | | # | # # # | | |
1.62 +// |==============|==# | # # # | | |
1.63 +// |=== IC =======| | # # # | | |
1.64 +// .->|==============|<===|======#=========#=========# | | |
1.65 +// | | | | | | |
1.66 +// | | | | | | |
1.67 +// | | | | | | |
1.68 +// | | | | v | |
1.69 +// | | | | +---------+ | |
1.70 +// | | | | | Fallback| | |
1.71 +// | | | | | Stub | | |
1.72 +// | | | | | Code | | |
1.73 +// | | | | +---------+ | |
1.74 +// | +--------------+ | | |
1.75 +// | |_______ | +---------+ | |
1.76 +// | | | | Stub |<---/ |
1.77 +// | IC | \--. | Code | |
1.78 +// | Descriptor | | +---------+ |
1.79 +// | Table v | |
1.80 +// | +-----------------+ | +---------+ |
1.81 +// \--| Ins | PC | Stub |----/ | Stub |<-------/
1.82 +// +-----------------+ | Code |
1.83 +// | ... | +---------+
1.84 +// +-----------------+
1.85 +// Shared
1.86 +// Stub Code
1.87 +//
1.88 +//
1.89 +// Type ICs
1.90 +// ========
1.91 +//
1.92 +// Type ICs are otherwise regular ICs that are actually nested within
1.93 +// other IC chains. They serve to optimize locations in the code where the
1.94 +// baseline compiler would have otherwise had to perform a type Monitor operation
1.95 +// (e.g. the result of GetProp, GetElem, etc.), or locations where the baseline
1.96 +// compiler would have had to modify a heap typeset using the type of an input
1.97 +// value (e.g. SetProp, SetElem, etc.)
1.98 +//
1.99 +// There are two kinds of Type ICs: Monitor and Update.
1.100 +//
1.101 +// Note that type stub bodies are no-ops. The stubs only exist for their
1.102 +// guards, and their existence simply signifies that the typeset (implicit)
1.103 +// that is being checked already contains that type.
1.104 +//
1.105 +// TypeMonitor ICs
1.106 +// ---------------
1.107 +// Monitor ICs are shared between stubs in the general IC, and monitor the resulting
1.108 +// types of getter operations (call returns, getprop outputs, etc.)
1.109 +//
1.110 +// +-----------+ +-----------+ +-----------+ +-----------+
1.111 +// ---->| Stub 1 |---->| Stub 2 |---->| Stub 3 |---->| FB Stub |
1.112 +// +-----------+ +-----------+ +-----------+ +-----------+
1.113 +// | | | |
1.114 +// |------------------/-----------------/ |
1.115 +// v |
1.116 +// +-----------+ +-----------+ +-----------+ |
1.117 +// | Type 1 |---->| Type 2 |---->| Type FB | |
1.118 +// +-----------+ +-----------+ +-----------+ |
1.119 +// | | | |
1.120 +// <----------/-----------------/------------------/------------------/
1.121 +// r e t u r n p a t h
1.122 +//
1.123 +// After an optimized IC stub successfully executes, it passes control to the type stub
1.124 +// chain to check the resulting type. If no type stub succeeds, and the monitor fallback
1.125 +// stub is reached, the monitor fallback stub performs a manual monitor, and also adds the
1.126 +// appropriate type stub to the chain.
1.127 +//
1.128 +// The IC's main fallback, in addition to generating new mainline stubs, also generates
1.129 +// type stubs as reflected by its returned value.
1.130 +//
1.131 +// NOTE: The type IC chain returns directly to the mainline code, not back to the
1.132 +// stub it was entered from. Thus, entering a type IC is a matter of a |jump|, not
1.133 +// a |call|. This allows us to safely call a VM Monitor function from within the monitor IC's
1.134 +// fallback chain, since the return address (needed for stack inspection) is preserved.
1.135 +//
1.136 +//
1.137 +// TypeUpdate ICs
1.138 +// --------------
1.139 +// Update ICs update heap typesets and monitor the input types of setter operations
1.140 +// (setelem, setprop inputs, etc.). Unlike monitor ICs, they are not shared
1.141 +// between stubs on an IC, but instead are kept track of on a per-stub basis.
1.142 +//
1.143 +// This is because the main stubs for the operation will each identify a potentially
1.144 +// different TypeObject to update. New input types must be tracked on a typeobject-to-
1.145 +// typeobject basis.
1.146 +//
1.147 +// Type-update ICs cannot be called in tail position (they must return to the
1.148 +// the stub that called them so that the stub may continue to perform its original
1.149 +// purpose). This means that any VMCall to perform a manual type update from C++ must be
1.150 +// done from within the main IC stub. This necessitates that the stub enter a
1.151 +// "BaselineStub" frame before making the call.
1.152 +//
1.153 +// If the type-update IC chain could itself make the VMCall, then the BaselineStub frame
1.154 +// must be entered before calling the type-update chain, and exited afterward. This
1.155 +// is very expensive for a common case where we expect the type-update fallback to not
1.156 +// be called. To avoid the cost of entering and exiting a BaselineStub frame when
1.157 +// using the type-update IC chain, we design the chain to not perform any VM-calls
1.158 +// in its fallback.
1.159 +//
1.160 +// Instead, the type-update IC chain is responsible for returning 1 or 0, depending
1.161 +// on if a type is represented in the chain or not. The fallback stub simply returns
1.162 +// 0, and all other optimized stubs return 1.
1.163 +// If the chain returns 1, then the IC stub goes ahead and performs its operation.
1.164 +// If the chain returns 0, then the IC stub performs a call to the fallback function
1.165 +// inline (doing the requisite BaselineStub frame enter/exit).
1.166 +// This allows us to avoid the expensive subfram enter/exit in the common case.
1.167 +//
1.168 +// r e t u r n p a t h
1.169 +// <--------------.-----------------.-----------------.-----------------.
1.170 +// | | | |
1.171 +// +-----------+ +-----------+ +-----------+ +-----------+
1.172 +// ---->| Stub 1 |---->| Stub 2 |---->| Stub 3 |---->| FB Stub |
1.173 +// +-----------+ +-----------+ +-----------+ +-----------+
1.174 +// | ^ | ^ | ^
1.175 +// | | | | | |
1.176 +// | | | | | |----------------.
1.177 +// | | | | v |1 |0
1.178 +// | | | | +-----------+ +-----------+
1.179 +// | | | | | Type 3.1 |--->| FB 3 |
1.180 +// | | | | +-----------+ +-----------+
1.181 +// | | | |
1.182 +// | | | \-------------.-----------------.
1.183 +// | | | | | |
1.184 +// | | v |1 |1 |0
1.185 +// | | +-----------+ +-----------+ +-----------+
1.186 +// | | | Type 2.1 |---->| Type 2.2 |---->| FB 2 |
1.187 +// | | +-----------+ +-----------+ +-----------+
1.188 +// | |
1.189 +// | \-------------.-----------------.
1.190 +// | | | |
1.191 +// v |1 |1 |0
1.192 +// +-----------+ +-----------+ +-----------+
1.193 +// | Type 1.1 |---->| Type 1.2 |---->| FB 1 |
1.194 +// +-----------+ +-----------+ +-----------+
1.195 +//
1.196 +
1.197 +class ICStub;
1.198 +class ICFallbackStub;
1.199 +
1.200 +//
1.201 +// An entry in the Baseline IC descriptor table.
1.202 +//
1.203 +class ICEntry
1.204 +{
1.205 + private:
1.206 + // A pointer to the baseline IC stub for this instruction.
1.207 + ICStub *firstStub_;
1.208 +
1.209 + // Offset from the start of the JIT code where the IC
1.210 + // load and call instructions are.
1.211 + uint32_t returnOffset_;
1.212 +
1.213 + // The PC of this IC's bytecode op within the JSScript.
1.214 + uint32_t pcOffset_ : 29;
1.215 +
1.216 + public:
1.217 + enum Kind {
1.218 + // A for-op IC entry.
1.219 + Kind_Op = 0,
1.220 +
1.221 + // A non-op IC entry.
1.222 + Kind_NonOp,
1.223 +
1.224 + // A fake IC entry for returning from a callVM.
1.225 + Kind_CallVM,
1.226 +
1.227 + // A fake IC entry for returning from DebugTrapHandler.
1.228 + Kind_DebugTrap,
1.229 +
1.230 + // A fake IC entry for returning from a callVM to
1.231 + // Debug{Prologue,Epilogue}.
1.232 + Kind_DebugPrologue,
1.233 + Kind_DebugEpilogue
1.234 + };
1.235 +
1.236 + private:
1.237 + // What this IC is for.
1.238 + Kind kind_ : 3;
1.239 +
1.240 + // Set the kind and asserts that it's sane.
1.241 + void setKind(Kind kind) {
1.242 + kind_ = kind;
1.243 + MOZ_ASSERT(this->kind() == kind);
1.244 + }
1.245 +
1.246 + public:
1.247 + ICEntry(uint32_t pcOffset, Kind kind)
1.248 + : firstStub_(nullptr), returnOffset_(), pcOffset_(pcOffset)
1.249 + {
1.250 + // The offset must fit in at least 29 bits, since we shave off 3 for
1.251 + // the Kind enum.
1.252 + MOZ_ASSERT(pcOffset_ == pcOffset);
1.253 + JS_STATIC_ASSERT(BaselineScript::MAX_JSSCRIPT_LENGTH < 0x1fffffffu);
1.254 + MOZ_ASSERT(pcOffset <= BaselineScript::MAX_JSSCRIPT_LENGTH);
1.255 + setKind(kind);
1.256 + }
1.257 +
1.258 + CodeOffsetLabel returnOffset() const {
1.259 + return CodeOffsetLabel(returnOffset_);
1.260 + }
1.261 +
1.262 + void setReturnOffset(CodeOffsetLabel offset) {
1.263 + JS_ASSERT(offset.offset() <= (size_t) UINT32_MAX);
1.264 + returnOffset_ = (uint32_t) offset.offset();
1.265 + }
1.266 +
1.267 + void fixupReturnOffset(MacroAssembler &masm) {
1.268 + CodeOffsetLabel offset = returnOffset();
1.269 + offset.fixup(&masm);
1.270 + JS_ASSERT(offset.offset() <= UINT32_MAX);
1.271 + returnOffset_ = (uint32_t) offset.offset();
1.272 + }
1.273 +
1.274 + uint32_t pcOffset() const {
1.275 + return pcOffset_;
1.276 + }
1.277 +
1.278 + jsbytecode *pc(JSScript *script) const {
1.279 + return script->offsetToPC(pcOffset_);
1.280 + }
1.281 +
1.282 + Kind kind() const {
1.283 + // MSVC compiles enums as signed.
1.284 + return (Kind)(kind_ & 0x7);
1.285 + }
1.286 + bool isForOp() const {
1.287 + return kind() == Kind_Op;
1.288 + }
1.289 +
1.290 + void setForDebugPrologue() {
1.291 + MOZ_ASSERT(kind() == Kind_CallVM);
1.292 + setKind(Kind_DebugPrologue);
1.293 + }
1.294 + void setForDebugEpilogue() {
1.295 + MOZ_ASSERT(kind() == Kind_CallVM);
1.296 + setKind(Kind_DebugEpilogue);
1.297 + }
1.298 +
1.299 + bool hasStub() const {
1.300 + return firstStub_ != nullptr;
1.301 + }
1.302 + ICStub *firstStub() const {
1.303 + JS_ASSERT(hasStub());
1.304 + return firstStub_;
1.305 + }
1.306 +
1.307 + ICFallbackStub *fallbackStub() const;
1.308 +
1.309 + void setFirstStub(ICStub *stub) {
1.310 + firstStub_ = stub;
1.311 + }
1.312 +
1.313 + static inline size_t offsetOfFirstStub() {
1.314 + return offsetof(ICEntry, firstStub_);
1.315 + }
1.316 +
1.317 + inline ICStub **addressOfFirstStub() {
1.318 + return &firstStub_;
1.319 + }
1.320 +};
1.321 +
1.322 +// List of baseline IC stub kinds.
1.323 +#define IC_STUB_KIND_LIST(_) \
1.324 + _(UseCount_Fallback) \
1.325 + \
1.326 + _(Profiler_Fallback) \
1.327 + _(Profiler_PushFunction) \
1.328 + \
1.329 + _(TypeMonitor_Fallback) \
1.330 + _(TypeMonitor_SingleObject) \
1.331 + _(TypeMonitor_TypeObject) \
1.332 + _(TypeMonitor_PrimitiveSet) \
1.333 + \
1.334 + _(TypeUpdate_Fallback) \
1.335 + _(TypeUpdate_SingleObject) \
1.336 + _(TypeUpdate_TypeObject) \
1.337 + _(TypeUpdate_PrimitiveSet) \
1.338 + \
1.339 + _(This_Fallback) \
1.340 + \
1.341 + _(NewArray_Fallback) \
1.342 + _(NewObject_Fallback) \
1.343 + \
1.344 + _(Compare_Fallback) \
1.345 + _(Compare_Int32) \
1.346 + _(Compare_Double) \
1.347 + _(Compare_NumberWithUndefined) \
1.348 + _(Compare_String) \
1.349 + _(Compare_Boolean) \
1.350 + _(Compare_Object) \
1.351 + _(Compare_ObjectWithUndefined) \
1.352 + _(Compare_Int32WithBoolean) \
1.353 + \
1.354 + _(ToBool_Fallback) \
1.355 + _(ToBool_Int32) \
1.356 + _(ToBool_String) \
1.357 + _(ToBool_NullUndefined) \
1.358 + _(ToBool_Double) \
1.359 + _(ToBool_Object) \
1.360 + \
1.361 + _(ToNumber_Fallback) \
1.362 + \
1.363 + _(BinaryArith_Fallback) \
1.364 + _(BinaryArith_Int32) \
1.365 + _(BinaryArith_Double) \
1.366 + _(BinaryArith_StringConcat) \
1.367 + _(BinaryArith_StringObjectConcat) \
1.368 + _(BinaryArith_BooleanWithInt32) \
1.369 + _(BinaryArith_DoubleWithInt32) \
1.370 + \
1.371 + _(UnaryArith_Fallback) \
1.372 + _(UnaryArith_Int32) \
1.373 + _(UnaryArith_Double) \
1.374 + \
1.375 + _(Call_Fallback) \
1.376 + _(Call_Scripted) \
1.377 + _(Call_AnyScripted) \
1.378 + _(Call_Native) \
1.379 + _(Call_ScriptedApplyArray) \
1.380 + _(Call_ScriptedApplyArguments) \
1.381 + _(Call_ScriptedFunCall) \
1.382 + \
1.383 + _(GetElem_Fallback) \
1.384 + _(GetElem_NativeSlot) \
1.385 + _(GetElem_NativePrototypeSlot) \
1.386 + _(GetElem_NativePrototypeCallNative) \
1.387 + _(GetElem_NativePrototypeCallScripted) \
1.388 + _(GetElem_String) \
1.389 + _(GetElem_Dense) \
1.390 + _(GetElem_TypedArray) \
1.391 + _(GetElem_Arguments) \
1.392 + \
1.393 + _(SetElem_Fallback) \
1.394 + _(SetElem_Dense) \
1.395 + _(SetElem_DenseAdd) \
1.396 + _(SetElem_TypedArray) \
1.397 + \
1.398 + _(In_Fallback) \
1.399 + \
1.400 + _(GetName_Fallback) \
1.401 + _(GetName_Global) \
1.402 + _(GetName_Scope0) \
1.403 + _(GetName_Scope1) \
1.404 + _(GetName_Scope2) \
1.405 + _(GetName_Scope3) \
1.406 + _(GetName_Scope4) \
1.407 + _(GetName_Scope5) \
1.408 + _(GetName_Scope6) \
1.409 + \
1.410 + _(BindName_Fallback) \
1.411 + \
1.412 + _(GetIntrinsic_Fallback) \
1.413 + _(GetIntrinsic_Constant) \
1.414 + \
1.415 + _(GetProp_Fallback) \
1.416 + _(GetProp_ArrayLength) \
1.417 + _(GetProp_TypedArrayLength) \
1.418 + _(GetProp_Primitive) \
1.419 + _(GetProp_StringLength) \
1.420 + _(GetProp_Native) \
1.421 + _(GetProp_NativePrototype) \
1.422 + _(GetProp_CallScripted) \
1.423 + _(GetProp_CallNative) \
1.424 + _(GetProp_CallNativePrototype)\
1.425 + _(GetProp_CallDOMProxyNative)\
1.426 + _(GetProp_CallDOMProxyWithGenerationNative)\
1.427 + _(GetProp_DOMProxyShadowed) \
1.428 + _(GetProp_ArgumentsLength) \
1.429 + \
1.430 + _(SetProp_Fallback) \
1.431 + _(SetProp_Native) \
1.432 + _(SetProp_NativeAdd) \
1.433 + _(SetProp_CallScripted) \
1.434 + _(SetProp_CallNative) \
1.435 + \
1.436 + _(TableSwitch) \
1.437 + \
1.438 + _(IteratorNew_Fallback) \
1.439 + _(IteratorMore_Fallback) \
1.440 + _(IteratorMore_Native) \
1.441 + _(IteratorNext_Fallback) \
1.442 + _(IteratorNext_Native) \
1.443 + _(IteratorClose_Fallback) \
1.444 + \
1.445 + _(InstanceOf_Fallback) \
1.446 + \
1.447 + _(TypeOf_Fallback) \
1.448 + _(TypeOf_Typed) \
1.449 + \
1.450 + _(Rest_Fallback) \
1.451 + \
1.452 + _(RetSub_Fallback) \
1.453 + _(RetSub_Resume)
1.454 +
1.455 +#define FORWARD_DECLARE_STUBS(kindName) class IC##kindName;
1.456 + IC_STUB_KIND_LIST(FORWARD_DECLARE_STUBS)
1.457 +#undef FORWARD_DECLARE_STUBS
1.458 +
1.459 +class ICMonitoredStub;
1.460 +class ICMonitoredFallbackStub;
1.461 +class ICUpdatedStub;
1.462 +
1.463 +// Constant iterator that traverses arbitrary chains of ICStubs.
1.464 +// No requirements are made of the ICStub used to construct this
1.465 +// iterator, aside from that the stub be part of a nullptr-terminated
1.466 +// chain.
1.467 +// The iterator is considered to be at its end once it has been
1.468 +// incremented _past_ the last stub. Thus, if 'atEnd()' returns
1.469 +// true, the '*' and '->' operations are not valid.
1.470 +class ICStubConstIterator
1.471 +{
1.472 + friend class ICStub;
1.473 + friend class ICFallbackStub;
1.474 +
1.475 + private:
1.476 + ICStub *currentStub_;
1.477 +
1.478 + public:
1.479 + ICStubConstIterator(ICStub *currentStub) : currentStub_(currentStub) {}
1.480 +
1.481 + static ICStubConstIterator StartingAt(ICStub *stub) {
1.482 + return ICStubConstIterator(stub);
1.483 + }
1.484 + static ICStubConstIterator End(ICStub *stub) {
1.485 + return ICStubConstIterator(nullptr);
1.486 + }
1.487 +
1.488 + bool operator ==(const ICStubConstIterator &other) const {
1.489 + return currentStub_ == other.currentStub_;
1.490 + }
1.491 + bool operator !=(const ICStubConstIterator &other) const {
1.492 + return !(*this == other);
1.493 + }
1.494 +
1.495 + ICStubConstIterator &operator++();
1.496 +
1.497 + ICStubConstIterator operator++(int) {
1.498 + ICStubConstIterator oldThis(*this);
1.499 + ++(*this);
1.500 + return oldThis;
1.501 + }
1.502 +
1.503 + ICStub *operator *() const {
1.504 + JS_ASSERT(currentStub_);
1.505 + return currentStub_;
1.506 + }
1.507 +
1.508 + ICStub *operator ->() const {
1.509 + JS_ASSERT(currentStub_);
1.510 + return currentStub_;
1.511 + }
1.512 +
1.513 + bool atEnd() const {
1.514 + return currentStub_ == nullptr;
1.515 + }
1.516 +};
1.517 +
1.518 +// Iterator that traverses "regular" IC chains that start at an ICEntry
1.519 +// and are terminated with an ICFallbackStub.
1.520 +//
1.521 +// The iterator is considered to be at its end once it is _at_ the
1.522 +// fallback stub. Thus, unlike the ICStubConstIterator, operators
1.523 +// '*' and '->' are valid even if 'atEnd()' returns true - they
1.524 +// will act on the fallback stub.
1.525 +//
1.526 +// This iterator also allows unlinking of stubs being traversed.
1.527 +// Note that 'unlink' does not implicitly advance the iterator -
1.528 +// it must be advanced explicitly using '++'.
1.529 +class ICStubIterator
1.530 +{
1.531 + friend class ICFallbackStub;
1.532 +
1.533 + private:
1.534 + ICEntry *icEntry_;
1.535 + ICFallbackStub *fallbackStub_;
1.536 + ICStub *previousStub_;
1.537 + ICStub *currentStub_;
1.538 + bool unlinked_;
1.539 +
1.540 + ICStubIterator(ICFallbackStub *fallbackStub, bool end=false);
1.541 + public:
1.542 +
1.543 + bool operator ==(const ICStubIterator &other) const {
1.544 + // == should only ever be called on stubs from the same chain.
1.545 + JS_ASSERT(icEntry_ == other.icEntry_);
1.546 + JS_ASSERT(fallbackStub_ == other.fallbackStub_);
1.547 + return currentStub_ == other.currentStub_;
1.548 + }
1.549 + bool operator !=(const ICStubIterator &other) const {
1.550 + return !(*this == other);
1.551 + }
1.552 +
1.553 + ICStubIterator &operator++();
1.554 +
1.555 + ICStubIterator operator++(int) {
1.556 + ICStubIterator oldThis(*this);
1.557 + ++(*this);
1.558 + return oldThis;
1.559 + }
1.560 +
1.561 + ICStub *operator *() const {
1.562 + return currentStub_;
1.563 + }
1.564 +
1.565 + ICStub *operator ->() const {
1.566 + return currentStub_;
1.567 + }
1.568 +
1.569 + bool atEnd() const {
1.570 + return currentStub_ == (ICStub *) fallbackStub_;
1.571 + }
1.572 +
1.573 + void unlink(JSContext *cx);
1.574 +};
1.575 +
1.576 +//
1.577 +// Base class for all IC stubs.
1.578 +//
1.579 +class ICStub
1.580 +{
1.581 + friend class ICFallbackStub;
1.582 +
1.583 + public:
1.584 + enum Kind {
1.585 + INVALID = 0,
1.586 +#define DEF_ENUM_KIND(kindName) kindName,
1.587 + IC_STUB_KIND_LIST(DEF_ENUM_KIND)
1.588 +#undef DEF_ENUM_KIND
1.589 + LIMIT
1.590 + };
1.591 +
1.592 + static inline bool IsValidKind(Kind k) {
1.593 + return (k > INVALID) && (k < LIMIT);
1.594 + }
1.595 +
1.596 + static const char *KindString(Kind k) {
1.597 + switch(k) {
1.598 +#define DEF_KIND_STR(kindName) case kindName: return #kindName;
1.599 + IC_STUB_KIND_LIST(DEF_KIND_STR)
1.600 +#undef DEF_KIND_STR
1.601 + default:
1.602 + MOZ_ASSUME_UNREACHABLE("Invalid kind.");
1.603 + }
1.604 + }
1.605 +
1.606 + enum Trait {
1.607 + Regular = 0x0,
1.608 + Fallback = 0x1,
1.609 + Monitored = 0x2,
1.610 + MonitoredFallback = 0x3,
1.611 + Updated = 0x4
1.612 + };
1.613 +
1.614 + void markCode(JSTracer *trc, const char *name);
1.615 + void updateCode(JitCode *stubCode);
1.616 + void trace(JSTracer *trc);
1.617 +
1.618 + protected:
1.619 + // The raw jitcode to call for this stub.
1.620 + uint8_t *stubCode_;
1.621 +
1.622 + // Pointer to next IC stub. This is null for the last IC stub, which should
1.623 + // either be a fallback or inert IC stub.
1.624 + ICStub *next_;
1.625 +
1.626 + // A 16-bit field usable by subtypes of ICStub for subtype-specific small-info
1.627 + uint16_t extra_;
1.628 +
1.629 + // The kind of the stub.
1.630 + // High bit is 'isFallback' flag.
1.631 + // Second high bit is 'isMonitored' flag.
1.632 + Trait trait_ : 3;
1.633 + Kind kind_ : 13;
1.634 +
1.635 + inline ICStub(Kind kind, JitCode *stubCode)
1.636 + : stubCode_(stubCode->raw()),
1.637 + next_(nullptr),
1.638 + extra_(0),
1.639 + trait_(Regular),
1.640 + kind_(kind)
1.641 + {
1.642 + JS_ASSERT(stubCode != nullptr);
1.643 + }
1.644 +
1.645 + inline ICStub(Kind kind, Trait trait, JitCode *stubCode)
1.646 + : stubCode_(stubCode->raw()),
1.647 + next_(nullptr),
1.648 + extra_(0),
1.649 + trait_(trait),
1.650 + kind_(kind)
1.651 + {
1.652 + JS_ASSERT(stubCode != nullptr);
1.653 + }
1.654 +
1.655 + inline Trait trait() const {
1.656 + // Workaround for MSVC reading trait_ as signed value.
1.657 + return (Trait)(trait_ & 0x7);
1.658 + }
1.659 +
1.660 + public:
1.661 +
1.662 + inline Kind kind() const {
1.663 + return static_cast<Kind>(kind_);
1.664 + }
1.665 +
1.666 + inline bool isFallback() const {
1.667 + return trait() == Fallback || trait() == MonitoredFallback;
1.668 + }
1.669 +
1.670 + inline bool isMonitored() const {
1.671 + return trait() == Monitored;
1.672 + }
1.673 +
1.674 + inline bool isUpdated() const {
1.675 + return trait() == Updated;
1.676 + }
1.677 +
1.678 + inline bool isMonitoredFallback() const {
1.679 + return trait() == MonitoredFallback;
1.680 + }
1.681 +
1.682 + inline const ICFallbackStub *toFallbackStub() const {
1.683 + JS_ASSERT(isFallback());
1.684 + return reinterpret_cast<const ICFallbackStub *>(this);
1.685 + }
1.686 +
1.687 + inline ICFallbackStub *toFallbackStub() {
1.688 + JS_ASSERT(isFallback());
1.689 + return reinterpret_cast<ICFallbackStub *>(this);
1.690 + }
1.691 +
1.692 + inline const ICMonitoredStub *toMonitoredStub() const {
1.693 + JS_ASSERT(isMonitored());
1.694 + return reinterpret_cast<const ICMonitoredStub *>(this);
1.695 + }
1.696 +
1.697 + inline ICMonitoredStub *toMonitoredStub() {
1.698 + JS_ASSERT(isMonitored());
1.699 + return reinterpret_cast<ICMonitoredStub *>(this);
1.700 + }
1.701 +
1.702 + inline const ICMonitoredFallbackStub *toMonitoredFallbackStub() const {
1.703 + JS_ASSERT(isMonitoredFallback());
1.704 + return reinterpret_cast<const ICMonitoredFallbackStub *>(this);
1.705 + }
1.706 +
1.707 + inline ICMonitoredFallbackStub *toMonitoredFallbackStub() {
1.708 + JS_ASSERT(isMonitoredFallback());
1.709 + return reinterpret_cast<ICMonitoredFallbackStub *>(this);
1.710 + }
1.711 +
1.712 + inline const ICUpdatedStub *toUpdatedStub() const {
1.713 + JS_ASSERT(isUpdated());
1.714 + return reinterpret_cast<const ICUpdatedStub *>(this);
1.715 + }
1.716 +
1.717 + inline ICUpdatedStub *toUpdatedStub() {
1.718 + JS_ASSERT(isUpdated());
1.719 + return reinterpret_cast<ICUpdatedStub *>(this);
1.720 + }
1.721 +
1.722 +#define KIND_METHODS(kindName) \
1.723 + inline bool is##kindName() const { return kind() == kindName; } \
1.724 + inline const IC##kindName *to##kindName() const { \
1.725 + JS_ASSERT(is##kindName()); \
1.726 + return reinterpret_cast<const IC##kindName *>(this); \
1.727 + } \
1.728 + inline IC##kindName *to##kindName() { \
1.729 + JS_ASSERT(is##kindName()); \
1.730 + return reinterpret_cast<IC##kindName *>(this); \
1.731 + }
1.732 + IC_STUB_KIND_LIST(KIND_METHODS)
1.733 +#undef KIND_METHODS
1.734 +
1.735 + inline ICStub *next() const {
1.736 + return next_;
1.737 + }
1.738 +
1.739 + inline bool hasNext() const {
1.740 + return next_ != nullptr;
1.741 + }
1.742 +
1.743 + inline void setNext(ICStub *stub) {
1.744 + // Note: next_ only needs to be changed under the compilation lock for
1.745 + // non-type-monitor/update ICs.
1.746 + next_ = stub;
1.747 + }
1.748 +
1.749 + inline ICStub **addressOfNext() {
1.750 + return &next_;
1.751 + }
1.752 +
1.753 + inline JitCode *jitCode() {
1.754 + return JitCode::FromExecutable(stubCode_);
1.755 + }
1.756 +
1.757 + inline uint8_t *rawStubCode() const {
1.758 + return stubCode_;
1.759 + }
1.760 +
1.761 + // This method is not valid on TypeUpdate stub chains!
1.762 + inline ICFallbackStub *getChainFallback() {
1.763 + ICStub *lastStub = this;
1.764 + while (lastStub->next_)
1.765 + lastStub = lastStub->next_;
1.766 + JS_ASSERT(lastStub->isFallback());
1.767 + return lastStub->toFallbackStub();
1.768 + }
1.769 +
1.770 + inline ICStubConstIterator beginHere() {
1.771 + return ICStubConstIterator::StartingAt(this);
1.772 + }
1.773 +
1.774 + static inline size_t offsetOfNext() {
1.775 + return offsetof(ICStub, next_);
1.776 + }
1.777 +
1.778 + static inline size_t offsetOfStubCode() {
1.779 + return offsetof(ICStub, stubCode_);
1.780 + }
1.781 +
1.782 + static inline size_t offsetOfExtra() {
1.783 + return offsetof(ICStub, extra_);
1.784 + }
1.785 +
1.786 + static bool CanMakeCalls(ICStub::Kind kind) {
1.787 + JS_ASSERT(IsValidKind(kind));
1.788 + switch (kind) {
1.789 + case Call_Fallback:
1.790 + case Call_Scripted:
1.791 + case Call_AnyScripted:
1.792 + case Call_Native:
1.793 + case Call_ScriptedApplyArray:
1.794 + case Call_ScriptedApplyArguments:
1.795 + case Call_ScriptedFunCall:
1.796 + case UseCount_Fallback:
1.797 + case GetElem_NativeSlot:
1.798 + case GetElem_NativePrototypeSlot:
1.799 + case GetElem_NativePrototypeCallNative:
1.800 + case GetElem_NativePrototypeCallScripted:
1.801 + case GetProp_CallScripted:
1.802 + case GetProp_CallNative:
1.803 + case GetProp_CallNativePrototype:
1.804 + case GetProp_CallDOMProxyNative:
1.805 + case GetProp_CallDOMProxyWithGenerationNative:
1.806 + case GetProp_DOMProxyShadowed:
1.807 + case SetProp_CallScripted:
1.808 + case SetProp_CallNative:
1.809 + case RetSub_Fallback:
1.810 + // These two fallback stubs don't actually make non-tail calls,
1.811 + // but the fallback code for the bailout path needs to pop the stub frame
1.812 + // pushed during the bailout.
1.813 + case GetProp_Fallback:
1.814 + case SetProp_Fallback:
1.815 +#if JS_HAS_NO_SUCH_METHOD
1.816 + case GetElem_Dense:
1.817 + case GetElem_Arguments:
1.818 + case GetProp_NativePrototype:
1.819 + case GetProp_Native:
1.820 +#endif
1.821 + return true;
1.822 + default:
1.823 + return false;
1.824 + }
1.825 + }
1.826 +
1.827 + // Optimized stubs get purged on GC. But some stubs can be active on the
1.828 + // stack during GC - specifically the ones that can make calls. To ensure
1.829 + // that these do not get purged, all stubs that can make calls are allocated
1.830 + // in the fallback stub space.
1.831 + bool allocatedInFallbackSpace() const {
1.832 + JS_ASSERT(next());
1.833 + return CanMakeCalls(kind());
1.834 + }
1.835 +};
1.836 +
1.837 +class ICFallbackStub : public ICStub
1.838 +{
1.839 + friend class ICStubConstIterator;
1.840 + protected:
1.841 + // Fallback stubs need these fields to easily add new stubs to
1.842 + // the linked list of stubs for an IC.
1.843 +
1.844 + // The IC entry for this linked list of stubs.
1.845 + ICEntry *icEntry_;
1.846 +
1.847 + // The number of stubs kept in the IC entry.
1.848 + uint32_t numOptimizedStubs_;
1.849 +
1.850 + // A pointer to the location stub pointer that needs to be
1.851 + // changed to add a new "last" stub immediately before the fallback
1.852 + // stub. This'll start out pointing to the icEntry's "firstStub_"
1.853 + // field, and as new stubs are addd, it'll point to the current
1.854 + // last stub's "next_" field.
1.855 + ICStub **lastStubPtrAddr_;
1.856 +
1.857 + ICFallbackStub(Kind kind, JitCode *stubCode)
1.858 + : ICStub(kind, ICStub::Fallback, stubCode),
1.859 + icEntry_(nullptr),
1.860 + numOptimizedStubs_(0),
1.861 + lastStubPtrAddr_(nullptr) {}
1.862 +
1.863 + ICFallbackStub(Kind kind, Trait trait, JitCode *stubCode)
1.864 + : ICStub(kind, trait, stubCode),
1.865 + icEntry_(nullptr),
1.866 + numOptimizedStubs_(0),
1.867 + lastStubPtrAddr_(nullptr)
1.868 + {
1.869 + JS_ASSERT(trait == ICStub::Fallback ||
1.870 + trait == ICStub::MonitoredFallback);
1.871 + }
1.872 +
1.873 + public:
1.874 + inline ICEntry *icEntry() const {
1.875 + return icEntry_;
1.876 + }
1.877 +
1.878 + inline size_t numOptimizedStubs() const {
1.879 + return (size_t) numOptimizedStubs_;
1.880 + }
1.881 +
1.882 + // The icEntry and lastStubPtrAddr_ fields can't be initialized when the stub is
1.883 + // created since the stub is created at compile time, and we won't know the IC entry
1.884 + // address until after compile when the BaselineScript is created. This method
1.885 + // allows these fields to be fixed up at that point.
1.886 + void fixupICEntry(ICEntry *icEntry) {
1.887 + JS_ASSERT(icEntry_ == nullptr);
1.888 + JS_ASSERT(lastStubPtrAddr_ == nullptr);
1.889 + icEntry_ = icEntry;
1.890 + lastStubPtrAddr_ = icEntry_->addressOfFirstStub();
1.891 + }
1.892 +
1.893 + // Add a new stub to the IC chain terminated by this fallback stub.
1.894 + void addNewStub(ICStub *stub) {
1.895 + JS_ASSERT(*lastStubPtrAddr_ == this);
1.896 + JS_ASSERT(stub->next() == nullptr);
1.897 + stub->setNext(this);
1.898 + *lastStubPtrAddr_ = stub;
1.899 + lastStubPtrAddr_ = stub->addressOfNext();
1.900 + numOptimizedStubs_++;
1.901 + }
1.902 +
1.903 + ICStubConstIterator beginChainConst() const {
1.904 + return ICStubConstIterator(icEntry_->firstStub());
1.905 + }
1.906 +
1.907 + ICStubIterator beginChain() {
1.908 + return ICStubIterator(this);
1.909 + }
1.910 +
1.911 + bool hasStub(ICStub::Kind kind) const {
1.912 + for (ICStubConstIterator iter = beginChainConst(); !iter.atEnd(); iter++) {
1.913 + if (iter->kind() == kind)
1.914 + return true;
1.915 + }
1.916 + return false;
1.917 + }
1.918 +
1.919 + unsigned numStubsWithKind(ICStub::Kind kind) const {
1.920 + unsigned count = 0;
1.921 + for (ICStubConstIterator iter = beginChainConst(); !iter.atEnd(); iter++) {
1.922 + if (iter->kind() == kind)
1.923 + count++;
1.924 + }
1.925 + return count;
1.926 + }
1.927 +
1.928 + void unlinkStub(Zone *zone, ICStub *prev, ICStub *stub);
1.929 + void unlinkStubsWithKind(JSContext *cx, ICStub::Kind kind);
1.930 +};
1.931 +
1.932 +// Monitored stubs are IC stubs that feed a single resulting value out to a
1.933 +// type monitor operation.
1.934 +class ICMonitoredStub : public ICStub
1.935 +{
1.936 + protected:
1.937 + // Pointer to the start of the type monitoring stub chain.
1.938 + ICStub *firstMonitorStub_;
1.939 +
1.940 + ICMonitoredStub(Kind kind, JitCode *stubCode, ICStub *firstMonitorStub);
1.941 +
1.942 + public:
1.943 + inline void updateFirstMonitorStub(ICStub *monitorStub) {
1.944 + // This should only be called once: when the first optimized monitor stub
1.945 + // is added to the type monitor IC chain.
1.946 + JS_ASSERT(firstMonitorStub_ && firstMonitorStub_->isTypeMonitor_Fallback());
1.947 + firstMonitorStub_ = monitorStub;
1.948 + }
1.949 + inline void resetFirstMonitorStub(ICStub *monitorFallback) {
1.950 + JS_ASSERT(monitorFallback->isTypeMonitor_Fallback());
1.951 + firstMonitorStub_ = monitorFallback;
1.952 + }
1.953 + inline ICStub *firstMonitorStub() const {
1.954 + return firstMonitorStub_;
1.955 + }
1.956 +
1.957 + static inline size_t offsetOfFirstMonitorStub() {
1.958 + return offsetof(ICMonitoredStub, firstMonitorStub_);
1.959 + }
1.960 +};
1.961 +
1.962 +// Monitored fallback stubs - as the name implies.
1.963 +class ICMonitoredFallbackStub : public ICFallbackStub
1.964 +{
1.965 + protected:
1.966 + // Pointer to the fallback monitor stub.
1.967 + ICTypeMonitor_Fallback *fallbackMonitorStub_;
1.968 +
1.969 + ICMonitoredFallbackStub(Kind kind, JitCode *stubCode)
1.970 + : ICFallbackStub(kind, ICStub::MonitoredFallback, stubCode),
1.971 + fallbackMonitorStub_(nullptr) {}
1.972 +
1.973 + public:
1.974 + bool initMonitoringChain(JSContext *cx, ICStubSpace *space);
1.975 + bool addMonitorStubForValue(JSContext *cx, JSScript *script, HandleValue val);
1.976 +
1.977 + inline ICTypeMonitor_Fallback *fallbackMonitorStub() const {
1.978 + return fallbackMonitorStub_;
1.979 + }
1.980 +
1.981 + static inline size_t offsetOfFallbackMonitorStub() {
1.982 + return offsetof(ICMonitoredFallbackStub, fallbackMonitorStub_);
1.983 + }
1.984 +};
1.985 +
1.986 +// Updated stubs are IC stubs that use a TypeUpdate IC to track
1.987 +// the status of heap typesets that need to be updated.
1.988 +class ICUpdatedStub : public ICStub
1.989 +{
1.990 + protected:
1.991 + // Pointer to the start of the type updating stub chain.
1.992 + ICStub *firstUpdateStub_;
1.993 +
1.994 + static const uint32_t MAX_OPTIMIZED_STUBS = 8;
1.995 + uint32_t numOptimizedStubs_;
1.996 +
1.997 + ICUpdatedStub(Kind kind, JitCode *stubCode)
1.998 + : ICStub(kind, ICStub::Updated, stubCode),
1.999 + firstUpdateStub_(nullptr),
1.1000 + numOptimizedStubs_(0)
1.1001 + {}
1.1002 +
1.1003 + public:
1.1004 + bool initUpdatingChain(JSContext *cx, ICStubSpace *space);
1.1005 +
1.1006 + bool addUpdateStubForValue(JSContext *cx, HandleScript script, HandleObject obj, HandleId id,
1.1007 + HandleValue val);
1.1008 +
1.1009 + void addOptimizedUpdateStub(ICStub *stub) {
1.1010 + if (firstUpdateStub_->isTypeUpdate_Fallback()) {
1.1011 + stub->setNext(firstUpdateStub_);
1.1012 + firstUpdateStub_ = stub;
1.1013 + } else {
1.1014 + ICStub *iter = firstUpdateStub_;
1.1015 + JS_ASSERT(iter->next() != nullptr);
1.1016 + while (!iter->next()->isTypeUpdate_Fallback())
1.1017 + iter = iter->next();
1.1018 + JS_ASSERT(iter->next()->next() == nullptr);
1.1019 + stub->setNext(iter->next());
1.1020 + iter->setNext(stub);
1.1021 + }
1.1022 +
1.1023 + numOptimizedStubs_++;
1.1024 + }
1.1025 +
1.1026 + inline ICStub *firstUpdateStub() const {
1.1027 + return firstUpdateStub_;
1.1028 + }
1.1029 +
1.1030 + bool hasTypeUpdateStub(ICStub::Kind kind) {
1.1031 + ICStub *stub = firstUpdateStub_;
1.1032 + do {
1.1033 + if (stub->kind() == kind)
1.1034 + return true;
1.1035 +
1.1036 + stub = stub->next();
1.1037 + } while (stub);
1.1038 +
1.1039 + return false;
1.1040 + }
1.1041 +
1.1042 + inline uint32_t numOptimizedStubs() const {
1.1043 + return numOptimizedStubs_;
1.1044 + }
1.1045 +
1.1046 + static inline size_t offsetOfFirstUpdateStub() {
1.1047 + return offsetof(ICUpdatedStub, firstUpdateStub_);
1.1048 + }
1.1049 +};
1.1050 +
1.1051 +// Base class for stubcode compilers.
1.1052 +class ICStubCompiler
1.1053 +{
1.1054 + // Prevent GC in the middle of stub compilation.
1.1055 + js::gc::AutoSuppressGC suppressGC;
1.1056 +
1.1057 +
1.1058 + protected:
1.1059 + JSContext *cx;
1.1060 + ICStub::Kind kind;
1.1061 +#ifdef DEBUG
1.1062 + bool entersStubFrame_;
1.1063 +#endif
1.1064 +
1.1065 + // By default the stubcode key is just the kind.
1.1066 + virtual int32_t getKey() const {
1.1067 + return static_cast<int32_t>(kind);
1.1068 + }
1.1069 +
1.1070 + virtual bool generateStubCode(MacroAssembler &masm) = 0;
1.1071 + virtual bool postGenerateStubCode(MacroAssembler &masm, Handle<JitCode *> genCode) {
1.1072 + return true;
1.1073 + }
1.1074 + JitCode *getStubCode();
1.1075 +
1.1076 + ICStubCompiler(JSContext *cx, ICStub::Kind kind)
1.1077 + : suppressGC(cx), cx(cx), kind(kind)
1.1078 +#ifdef DEBUG
1.1079 + , entersStubFrame_(false)
1.1080 +#endif
1.1081 + {}
1.1082 +
1.1083 + // Emits a tail call to a VMFunction wrapper.
1.1084 + bool tailCallVM(const VMFunction &fun, MacroAssembler &masm);
1.1085 +
1.1086 + // Emits a normal (non-tail) call to a VMFunction wrapper.
1.1087 + bool callVM(const VMFunction &fun, MacroAssembler &masm);
1.1088 +
1.1089 + // Emits a call to a type-update IC, assuming that the value to be
1.1090 + // checked is already in R0.
1.1091 + bool callTypeUpdateIC(MacroAssembler &masm, uint32_t objectOffset);
1.1092 +
1.1093 + // A stub frame is used when a stub wants to call into the VM without
1.1094 + // performing a tail call. This is required for the return address
1.1095 + // to pc mapping to work.
1.1096 + void enterStubFrame(MacroAssembler &masm, Register scratch);
1.1097 + void leaveStubFrame(MacroAssembler &masm, bool calledIntoIon = false);
1.1098 + void leaveStubFrameHead(MacroAssembler &masm, bool calledIntoIon = false);
1.1099 + void leaveStubFrameCommonTail(MacroAssembler &masm);
1.1100 +
1.1101 + // Some stubs need to emit SPS profiler updates. This emits the guarding
1.1102 + // jitcode for those stubs. If profiling is not enabled, jumps to the
1.1103 + // given label.
1.1104 + void guardProfilingEnabled(MacroAssembler &masm, Register scratch, Label *skip);
1.1105 +
1.1106 + // Higher-level helper to emit an update to the profiler pseudo-stack.
1.1107 + void emitProfilingUpdate(MacroAssembler &masm, Register pcIdx, Register scratch,
1.1108 + uint32_t stubPcOffset);
1.1109 + void emitProfilingUpdate(MacroAssembler &masm, GeneralRegisterSet regs, uint32_t stubPcOffset);
1.1110 +
1.1111 + inline GeneralRegisterSet availableGeneralRegs(size_t numInputs) const {
1.1112 + GeneralRegisterSet regs(GeneralRegisterSet::All());
1.1113 + JS_ASSERT(!regs.has(BaselineStackReg));
1.1114 +#if defined(JS_CODEGEN_ARM)
1.1115 + JS_ASSERT(!regs.has(BaselineTailCallReg));
1.1116 + regs.take(BaselineSecondScratchReg);
1.1117 +#elif defined(JS_CODEGEN_MIPS)
1.1118 + JS_ASSERT(!regs.has(BaselineTailCallReg));
1.1119 + JS_ASSERT(!regs.has(BaselineSecondScratchReg));
1.1120 +#endif
1.1121 + regs.take(BaselineFrameReg);
1.1122 + regs.take(BaselineStubReg);
1.1123 +#ifdef JS_CODEGEN_X64
1.1124 + regs.take(ExtractTemp0);
1.1125 + regs.take(ExtractTemp1);
1.1126 +#endif
1.1127 +
1.1128 + switch (numInputs) {
1.1129 + case 0:
1.1130 + break;
1.1131 + case 1:
1.1132 + regs.take(R0);
1.1133 + break;
1.1134 + case 2:
1.1135 + regs.take(R0);
1.1136 + regs.take(R1);
1.1137 + break;
1.1138 + default:
1.1139 + MOZ_ASSUME_UNREACHABLE("Invalid numInputs");
1.1140 + }
1.1141 +
1.1142 + return regs;
1.1143 + }
1.1144 +
1.1145 +#ifdef JSGC_GENERATIONAL
1.1146 + inline bool emitPostWriteBarrierSlot(MacroAssembler &masm, Register obj, ValueOperand val,
1.1147 + Register scratch, GeneralRegisterSet saveRegs);
1.1148 +#endif
1.1149 +
1.1150 + public:
1.1151 + virtual ICStub *getStub(ICStubSpace *space) = 0;
1.1152 +
1.1153 + ICStubSpace *getStubSpace(JSScript *script) {
1.1154 + if (ICStub::CanMakeCalls(kind))
1.1155 + return script->baselineScript()->fallbackStubSpace();
1.1156 + return script->zone()->jitZone()->optimizedStubSpace();
1.1157 + }
1.1158 +};
1.1159 +
1.1160 +// Base class for stub compilers that can generate multiple stubcodes.
1.1161 +// These compilers need access to the JSOp they are compiling for.
1.1162 +class ICMultiStubCompiler : public ICStubCompiler
1.1163 +{
1.1164 + protected:
1.1165 + JSOp op;
1.1166 +
1.1167 + // Stub keys for multi-stub kinds are composed of both the kind
1.1168 + // and the op they are compiled for.
1.1169 + virtual int32_t getKey() const {
1.1170 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(op) << 16);
1.1171 + }
1.1172 +
1.1173 + ICMultiStubCompiler(JSContext *cx, ICStub::Kind kind, JSOp op)
1.1174 + : ICStubCompiler(cx, kind), op(op) {}
1.1175 +};
1.1176 +
1.1177 +// UseCount_Fallback
1.1178 +
1.1179 +// A UseCount IC chain has only the fallback stub.
1.1180 +class ICUseCount_Fallback : public ICFallbackStub
1.1181 +{
1.1182 + friend class ICStubSpace;
1.1183 +
1.1184 + ICUseCount_Fallback(JitCode *stubCode)
1.1185 + : ICFallbackStub(ICStub::UseCount_Fallback, stubCode)
1.1186 + { }
1.1187 +
1.1188 + public:
1.1189 + static inline ICUseCount_Fallback *New(ICStubSpace *space, JitCode *code) {
1.1190 + if (!code)
1.1191 + return nullptr;
1.1192 + return space->allocate<ICUseCount_Fallback>(code);
1.1193 + }
1.1194 +
1.1195 + // Compiler for this stub kind.
1.1196 + class Compiler : public ICStubCompiler {
1.1197 + protected:
1.1198 + bool generateStubCode(MacroAssembler &masm);
1.1199 +
1.1200 + public:
1.1201 + Compiler(JSContext *cx)
1.1202 + : ICStubCompiler(cx, ICStub::UseCount_Fallback)
1.1203 + { }
1.1204 +
1.1205 + ICUseCount_Fallback *getStub(ICStubSpace *space) {
1.1206 + return ICUseCount_Fallback::New(space, getStubCode());
1.1207 + }
1.1208 + };
1.1209 +};
1.1210 +
1.1211 +// Profiler_Fallback
1.1212 +
1.1213 +class ICProfiler_Fallback : public ICFallbackStub
1.1214 +{
1.1215 + friend class ICStubSpace;
1.1216 +
1.1217 + ICProfiler_Fallback(JitCode *stubCode)
1.1218 + : ICFallbackStub(ICStub::Profiler_Fallback, stubCode)
1.1219 + { }
1.1220 +
1.1221 + public:
1.1222 + static inline ICProfiler_Fallback *New(ICStubSpace *space, JitCode *code) {
1.1223 + if (!code)
1.1224 + return nullptr;
1.1225 + return space->allocate<ICProfiler_Fallback>(code);
1.1226 + }
1.1227 +
1.1228 + // Compiler for this stub kind.
1.1229 + class Compiler : public ICStubCompiler {
1.1230 + protected:
1.1231 + bool generateStubCode(MacroAssembler &masm);
1.1232 +
1.1233 + public:
1.1234 + Compiler(JSContext *cx)
1.1235 + : ICStubCompiler(cx, ICStub::Profiler_Fallback)
1.1236 + { }
1.1237 +
1.1238 + ICProfiler_Fallback *getStub(ICStubSpace *space) {
1.1239 + return ICProfiler_Fallback::New(space, getStubCode());
1.1240 + }
1.1241 + };
1.1242 +};
1.1243 +
1.1244 +// Profiler_PushFunction
1.1245 +
1.1246 +class ICProfiler_PushFunction : public ICStub
1.1247 +{
1.1248 + friend class ICStubSpace;
1.1249 +
1.1250 + protected:
1.1251 + const char *str_;
1.1252 + HeapPtrScript script_;
1.1253 +
1.1254 + ICProfiler_PushFunction(JitCode *stubCode, const char *str, HandleScript script);
1.1255 +
1.1256 + public:
1.1257 + static inline ICProfiler_PushFunction *New(ICStubSpace *space, JitCode *code,
1.1258 + const char *str, HandleScript script)
1.1259 + {
1.1260 + if (!code)
1.1261 + return nullptr;
1.1262 + return space->allocate<ICProfiler_PushFunction>(code, str, script);
1.1263 + }
1.1264 +
1.1265 + HeapPtrScript &script() {
1.1266 + return script_;
1.1267 + }
1.1268 +
1.1269 + static size_t offsetOfStr() {
1.1270 + return offsetof(ICProfiler_PushFunction, str_);
1.1271 + }
1.1272 + static size_t offsetOfScript() {
1.1273 + return offsetof(ICProfiler_PushFunction, script_);
1.1274 + }
1.1275 +
1.1276 + // Compiler for this stub kind.
1.1277 + class Compiler : public ICStubCompiler {
1.1278 + protected:
1.1279 + const char *str_;
1.1280 + RootedScript script_;
1.1281 + bool generateStubCode(MacroAssembler &masm);
1.1282 +
1.1283 + public:
1.1284 + Compiler(JSContext *cx, const char *str, HandleScript script)
1.1285 + : ICStubCompiler(cx, ICStub::Profiler_PushFunction),
1.1286 + str_(str),
1.1287 + script_(cx, script)
1.1288 + { }
1.1289 +
1.1290 + ICProfiler_PushFunction *getStub(ICStubSpace *space) {
1.1291 + return ICProfiler_PushFunction::New(space, getStubCode(), str_, script_);
1.1292 + }
1.1293 + };
1.1294 +};
1.1295 +
1.1296 +
1.1297 +// TypeCheckPrimitiveSetStub
1.1298 +// Base class for IC stubs (TypeUpdate or TypeMonitor) that check that a given
1.1299 +// value's type falls within a set of primitive types.
1.1300 +
1.1301 +class TypeCheckPrimitiveSetStub : public ICStub
1.1302 +{
1.1303 + friend class ICStubSpace;
1.1304 + protected:
1.1305 + inline static uint16_t TypeToFlag(JSValueType type) {
1.1306 + return 1u << static_cast<unsigned>(type);
1.1307 + }
1.1308 +
1.1309 + inline static uint16_t ValidFlags() {
1.1310 + return ((TypeToFlag(JSVAL_TYPE_OBJECT) << 1) - 1) & ~TypeToFlag(JSVAL_TYPE_MAGIC);
1.1311 + }
1.1312 +
1.1313 + TypeCheckPrimitiveSetStub(Kind kind, JitCode *stubCode, uint16_t flags)
1.1314 + : ICStub(kind, stubCode)
1.1315 + {
1.1316 + JS_ASSERT(kind == TypeMonitor_PrimitiveSet || kind == TypeUpdate_PrimitiveSet);
1.1317 + JS_ASSERT(flags && !(flags & ~ValidFlags()));
1.1318 + extra_ = flags;
1.1319 + }
1.1320 +
1.1321 + TypeCheckPrimitiveSetStub *updateTypesAndCode(uint16_t flags, JitCode *code) {
1.1322 + JS_ASSERT(flags && !(flags & ~ValidFlags()));
1.1323 + if (!code)
1.1324 + return nullptr;
1.1325 + extra_ = flags;
1.1326 + updateCode(code);
1.1327 + return this;
1.1328 + }
1.1329 +
1.1330 + public:
1.1331 + uint16_t typeFlags() const {
1.1332 + return extra_;
1.1333 + }
1.1334 +
1.1335 + bool containsType(JSValueType type) const {
1.1336 + JS_ASSERT(type <= JSVAL_TYPE_OBJECT);
1.1337 + JS_ASSERT(type != JSVAL_TYPE_MAGIC);
1.1338 + return extra_ & TypeToFlag(type);
1.1339 + }
1.1340 +
1.1341 + ICTypeMonitor_PrimitiveSet *toMonitorStub() {
1.1342 + return toTypeMonitor_PrimitiveSet();
1.1343 + }
1.1344 +
1.1345 + ICTypeUpdate_PrimitiveSet *toUpdateStub() {
1.1346 + return toTypeUpdate_PrimitiveSet();
1.1347 + }
1.1348 +
1.1349 + class Compiler : public ICStubCompiler {
1.1350 + protected:
1.1351 + TypeCheckPrimitiveSetStub *existingStub_;
1.1352 + uint16_t flags_;
1.1353 +
1.1354 + virtual int32_t getKey() const {
1.1355 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(flags_) << 16);
1.1356 + }
1.1357 +
1.1358 + public:
1.1359 + Compiler(JSContext *cx, Kind kind, TypeCheckPrimitiveSetStub *existingStub,
1.1360 + JSValueType type)
1.1361 + : ICStubCompiler(cx, kind),
1.1362 + existingStub_(existingStub),
1.1363 + flags_((existingStub ? existingStub->typeFlags() : 0) | TypeToFlag(type))
1.1364 + {
1.1365 + JS_ASSERT_IF(existingStub_, flags_ != existingStub_->typeFlags());
1.1366 + }
1.1367 +
1.1368 + TypeCheckPrimitiveSetStub *updateStub() {
1.1369 + JS_ASSERT(existingStub_);
1.1370 + return existingStub_->updateTypesAndCode(flags_, getStubCode());
1.1371 + }
1.1372 + };
1.1373 +};
1.1374 +
1.1375 +// TypeMonitor
1.1376 +
1.1377 +// The TypeMonitor fallback stub is not always a regular fallback stub. When
1.1378 +// used for monitoring the values pushed by a bytecode it doesn't hold a
1.1379 +// pointer to the IC entry, but rather back to the main fallback stub for the
1.1380 +// IC (from which a pointer to the IC entry can be retrieved). When monitoring
1.1381 +// the types of 'this', arguments or other values with no associated IC, there
1.1382 +// is no main fallback stub, and the IC entry is referenced directly.
1.1383 +class ICTypeMonitor_Fallback : public ICStub
1.1384 +{
1.1385 + friend class ICStubSpace;
1.1386 +
1.1387 + static const uint32_t MAX_OPTIMIZED_STUBS = 8;
1.1388 +
1.1389 + // Pointer to the main fallback stub for the IC or to the main IC entry,
1.1390 + // depending on hasFallbackStub.
1.1391 + union {
1.1392 + ICMonitoredFallbackStub *mainFallbackStub_;
1.1393 + ICEntry *icEntry_;
1.1394 + };
1.1395 +
1.1396 + // Pointer to the first monitor stub.
1.1397 + ICStub *firstMonitorStub_;
1.1398 +
1.1399 + // Address of the last monitor stub's field pointing to this
1.1400 + // fallback monitor stub. This will get updated when new
1.1401 + // monitor stubs are created and added.
1.1402 + ICStub **lastMonitorStubPtrAddr_;
1.1403 +
1.1404 + // Count of optimized type monitor stubs in this chain.
1.1405 + uint32_t numOptimizedMonitorStubs_ : 8;
1.1406 +
1.1407 + // Whether this has a fallback stub referring to the IC entry.
1.1408 + bool hasFallbackStub_ : 1;
1.1409 +
1.1410 + // Index of 'this' or argument which is being monitored, or BYTECODE_INDEX
1.1411 + // if this is monitoring the types of values pushed at some bytecode.
1.1412 + uint32_t argumentIndex_ : 23;
1.1413 +
1.1414 + static const uint32_t BYTECODE_INDEX = (1 << 23) - 1;
1.1415 +
1.1416 + ICTypeMonitor_Fallback(JitCode *stubCode, ICMonitoredFallbackStub *mainFallbackStub,
1.1417 + uint32_t argumentIndex)
1.1418 + : ICStub(ICStub::TypeMonitor_Fallback, stubCode),
1.1419 + mainFallbackStub_(mainFallbackStub),
1.1420 + firstMonitorStub_(thisFromCtor()),
1.1421 + lastMonitorStubPtrAddr_(nullptr),
1.1422 + numOptimizedMonitorStubs_(0),
1.1423 + hasFallbackStub_(mainFallbackStub != nullptr),
1.1424 + argumentIndex_(argumentIndex)
1.1425 + { }
1.1426 +
1.1427 + ICTypeMonitor_Fallback *thisFromCtor() {
1.1428 + return this;
1.1429 + }
1.1430 +
1.1431 + void addOptimizedMonitorStub(ICStub *stub) {
1.1432 + stub->setNext(this);
1.1433 +
1.1434 + JS_ASSERT((lastMonitorStubPtrAddr_ != nullptr) ==
1.1435 + (numOptimizedMonitorStubs_ || !hasFallbackStub_));
1.1436 +
1.1437 + if (lastMonitorStubPtrAddr_)
1.1438 + *lastMonitorStubPtrAddr_ = stub;
1.1439 +
1.1440 + if (numOptimizedMonitorStubs_ == 0) {
1.1441 + JS_ASSERT(firstMonitorStub_ == this);
1.1442 + firstMonitorStub_ = stub;
1.1443 + } else {
1.1444 + JS_ASSERT(firstMonitorStub_ != nullptr);
1.1445 + }
1.1446 +
1.1447 + lastMonitorStubPtrAddr_ = stub->addressOfNext();
1.1448 + numOptimizedMonitorStubs_++;
1.1449 + }
1.1450 +
1.1451 + public:
1.1452 + static inline ICTypeMonitor_Fallback *New(
1.1453 + ICStubSpace *space, JitCode *code, ICMonitoredFallbackStub *mainFbStub,
1.1454 + uint32_t argumentIndex)
1.1455 + {
1.1456 + if (!code)
1.1457 + return nullptr;
1.1458 + return space->allocate<ICTypeMonitor_Fallback>(code, mainFbStub, argumentIndex);
1.1459 + }
1.1460 +
1.1461 + bool hasStub(ICStub::Kind kind) {
1.1462 + ICStub *stub = firstMonitorStub_;
1.1463 + do {
1.1464 + if (stub->kind() == kind)
1.1465 + return true;
1.1466 +
1.1467 + stub = stub->next();
1.1468 + } while (stub);
1.1469 +
1.1470 + return false;
1.1471 + }
1.1472 +
1.1473 + inline ICFallbackStub *mainFallbackStub() const {
1.1474 + JS_ASSERT(hasFallbackStub_);
1.1475 + return mainFallbackStub_;
1.1476 + }
1.1477 +
1.1478 + inline ICEntry *icEntry() const {
1.1479 + return hasFallbackStub_ ? mainFallbackStub()->icEntry() : icEntry_;
1.1480 + }
1.1481 +
1.1482 + inline ICStub *firstMonitorStub() const {
1.1483 + return firstMonitorStub_;
1.1484 + }
1.1485 +
1.1486 + static inline size_t offsetOfFirstMonitorStub() {
1.1487 + return offsetof(ICTypeMonitor_Fallback, firstMonitorStub_);
1.1488 + }
1.1489 +
1.1490 + inline uint32_t numOptimizedMonitorStubs() const {
1.1491 + return numOptimizedMonitorStubs_;
1.1492 + }
1.1493 +
1.1494 + inline bool monitorsThis() const {
1.1495 + return argumentIndex_ == 0;
1.1496 + }
1.1497 +
1.1498 + inline bool monitorsArgument(uint32_t *pargument) const {
1.1499 + if (argumentIndex_ > 0 && argumentIndex_ < BYTECODE_INDEX) {
1.1500 + *pargument = argumentIndex_ - 1;
1.1501 + return true;
1.1502 + }
1.1503 + return false;
1.1504 + }
1.1505 +
1.1506 + inline bool monitorsBytecode() const {
1.1507 + return argumentIndex_ == BYTECODE_INDEX;
1.1508 + }
1.1509 +
1.1510 + // Fixup the IC entry as for a normal fallback stub, for this/arguments.
1.1511 + void fixupICEntry(ICEntry *icEntry) {
1.1512 + JS_ASSERT(!hasFallbackStub_);
1.1513 + JS_ASSERT(icEntry_ == nullptr);
1.1514 + JS_ASSERT(lastMonitorStubPtrAddr_ == nullptr);
1.1515 + icEntry_ = icEntry;
1.1516 + lastMonitorStubPtrAddr_ = icEntry_->addressOfFirstStub();
1.1517 + }
1.1518 +
1.1519 + // Create a new monitor stub for the type of the given value, and
1.1520 + // add it to this chain.
1.1521 + bool addMonitorStubForValue(JSContext *cx, JSScript *script, HandleValue val);
1.1522 +
1.1523 + void resetMonitorStubChain(Zone *zone);
1.1524 +
1.1525 + // Compiler for this stub kind.
1.1526 + class Compiler : public ICStubCompiler {
1.1527 + ICMonitoredFallbackStub *mainFallbackStub_;
1.1528 + uint32_t argumentIndex_;
1.1529 +
1.1530 + protected:
1.1531 + bool generateStubCode(MacroAssembler &masm);
1.1532 +
1.1533 + public:
1.1534 + Compiler(JSContext *cx, ICMonitoredFallbackStub *mainFallbackStub)
1.1535 + : ICStubCompiler(cx, ICStub::TypeMonitor_Fallback),
1.1536 + mainFallbackStub_(mainFallbackStub),
1.1537 + argumentIndex_(BYTECODE_INDEX)
1.1538 + { }
1.1539 +
1.1540 + Compiler(JSContext *cx, uint32_t argumentIndex)
1.1541 + : ICStubCompiler(cx, ICStub::TypeMonitor_Fallback),
1.1542 + mainFallbackStub_(nullptr),
1.1543 + argumentIndex_(argumentIndex)
1.1544 + { }
1.1545 +
1.1546 + ICTypeMonitor_Fallback *getStub(ICStubSpace *space) {
1.1547 + return ICTypeMonitor_Fallback::New(space, getStubCode(), mainFallbackStub_,
1.1548 + argumentIndex_);
1.1549 + }
1.1550 + };
1.1551 +};
1.1552 +
1.1553 +class ICTypeMonitor_PrimitiveSet : public TypeCheckPrimitiveSetStub
1.1554 +{
1.1555 + friend class ICStubSpace;
1.1556 +
1.1557 + ICTypeMonitor_PrimitiveSet(JitCode *stubCode, uint16_t flags)
1.1558 + : TypeCheckPrimitiveSetStub(TypeMonitor_PrimitiveSet, stubCode, flags)
1.1559 + {}
1.1560 +
1.1561 + public:
1.1562 + static inline ICTypeMonitor_PrimitiveSet *New(ICStubSpace *space, JitCode *code,
1.1563 + uint16_t flags)
1.1564 + {
1.1565 + if (!code)
1.1566 + return nullptr;
1.1567 + return space->allocate<ICTypeMonitor_PrimitiveSet>(code, flags);
1.1568 + }
1.1569 +
1.1570 + class Compiler : public TypeCheckPrimitiveSetStub::Compiler {
1.1571 + protected:
1.1572 + bool generateStubCode(MacroAssembler &masm);
1.1573 +
1.1574 + public:
1.1575 + Compiler(JSContext *cx, ICTypeMonitor_PrimitiveSet *existingStub, JSValueType type)
1.1576 + : TypeCheckPrimitiveSetStub::Compiler(cx, TypeMonitor_PrimitiveSet, existingStub, type)
1.1577 + {}
1.1578 +
1.1579 + ICTypeMonitor_PrimitiveSet *updateStub() {
1.1580 + TypeCheckPrimitiveSetStub *stub =
1.1581 + this->TypeCheckPrimitiveSetStub::Compiler::updateStub();
1.1582 + if (!stub)
1.1583 + return nullptr;
1.1584 + return stub->toMonitorStub();
1.1585 + }
1.1586 +
1.1587 + ICTypeMonitor_PrimitiveSet *getStub(ICStubSpace *space) {
1.1588 + JS_ASSERT(!existingStub_);
1.1589 + return ICTypeMonitor_PrimitiveSet::New(space, getStubCode(), flags_);
1.1590 + }
1.1591 + };
1.1592 +};
1.1593 +
1.1594 +class ICTypeMonitor_SingleObject : public ICStub
1.1595 +{
1.1596 + friend class ICStubSpace;
1.1597 +
1.1598 + HeapPtrObject obj_;
1.1599 +
1.1600 + ICTypeMonitor_SingleObject(JitCode *stubCode, HandleObject obj);
1.1601 +
1.1602 + public:
1.1603 + static inline ICTypeMonitor_SingleObject *New(
1.1604 + ICStubSpace *space, JitCode *code, HandleObject obj)
1.1605 + {
1.1606 + if (!code)
1.1607 + return nullptr;
1.1608 + return space->allocate<ICTypeMonitor_SingleObject>(code, obj);
1.1609 + }
1.1610 +
1.1611 + HeapPtrObject &object() {
1.1612 + return obj_;
1.1613 + }
1.1614 +
1.1615 + static size_t offsetOfObject() {
1.1616 + return offsetof(ICTypeMonitor_SingleObject, obj_);
1.1617 + }
1.1618 +
1.1619 + class Compiler : public ICStubCompiler {
1.1620 + protected:
1.1621 + HandleObject obj_;
1.1622 + bool generateStubCode(MacroAssembler &masm);
1.1623 +
1.1624 + public:
1.1625 + Compiler(JSContext *cx, HandleObject obj)
1.1626 + : ICStubCompiler(cx, TypeMonitor_SingleObject),
1.1627 + obj_(obj)
1.1628 + { }
1.1629 +
1.1630 + ICTypeMonitor_SingleObject *getStub(ICStubSpace *space) {
1.1631 + return ICTypeMonitor_SingleObject::New(space, getStubCode(), obj_);
1.1632 + }
1.1633 + };
1.1634 +};
1.1635 +
1.1636 +class ICTypeMonitor_TypeObject : public ICStub
1.1637 +{
1.1638 + friend class ICStubSpace;
1.1639 +
1.1640 + HeapPtrTypeObject type_;
1.1641 +
1.1642 + ICTypeMonitor_TypeObject(JitCode *stubCode, HandleTypeObject type);
1.1643 +
1.1644 + public:
1.1645 + static inline ICTypeMonitor_TypeObject *New(
1.1646 + ICStubSpace *space, JitCode *code, HandleTypeObject type)
1.1647 + {
1.1648 + if (!code)
1.1649 + return nullptr;
1.1650 + return space->allocate<ICTypeMonitor_TypeObject>(code, type);
1.1651 + }
1.1652 +
1.1653 + HeapPtrTypeObject &type() {
1.1654 + return type_;
1.1655 + }
1.1656 +
1.1657 + static size_t offsetOfType() {
1.1658 + return offsetof(ICTypeMonitor_TypeObject, type_);
1.1659 + }
1.1660 +
1.1661 + class Compiler : public ICStubCompiler {
1.1662 + protected:
1.1663 + HandleTypeObject type_;
1.1664 + bool generateStubCode(MacroAssembler &masm);
1.1665 +
1.1666 + public:
1.1667 + Compiler(JSContext *cx, HandleTypeObject type)
1.1668 + : ICStubCompiler(cx, TypeMonitor_TypeObject),
1.1669 + type_(type)
1.1670 + { }
1.1671 +
1.1672 + ICTypeMonitor_TypeObject *getStub(ICStubSpace *space) {
1.1673 + return ICTypeMonitor_TypeObject::New(space, getStubCode(), type_);
1.1674 + }
1.1675 + };
1.1676 +};
1.1677 +
1.1678 +// TypeUpdate
1.1679 +
1.1680 +extern const VMFunction DoTypeUpdateFallbackInfo;
1.1681 +
1.1682 +// The TypeUpdate fallback is not a regular fallback, since it just
1.1683 +// forwards to a different entry point in the main fallback stub.
1.1684 +class ICTypeUpdate_Fallback : public ICStub
1.1685 +{
1.1686 + friend class ICStubSpace;
1.1687 +
1.1688 + ICTypeUpdate_Fallback(JitCode *stubCode)
1.1689 + : ICStub(ICStub::TypeUpdate_Fallback, stubCode)
1.1690 + {}
1.1691 +
1.1692 + public:
1.1693 + static inline ICTypeUpdate_Fallback *New(ICStubSpace *space, JitCode *code) {
1.1694 + if (!code)
1.1695 + return nullptr;
1.1696 + return space->allocate<ICTypeUpdate_Fallback>(code);
1.1697 + }
1.1698 +
1.1699 + // Compiler for this stub kind.
1.1700 + class Compiler : public ICStubCompiler {
1.1701 + protected:
1.1702 + bool generateStubCode(MacroAssembler &masm);
1.1703 +
1.1704 + public:
1.1705 + Compiler(JSContext *cx)
1.1706 + : ICStubCompiler(cx, ICStub::TypeUpdate_Fallback)
1.1707 + { }
1.1708 +
1.1709 + ICTypeUpdate_Fallback *getStub(ICStubSpace *space) {
1.1710 + return ICTypeUpdate_Fallback::New(space, getStubCode());
1.1711 + }
1.1712 + };
1.1713 +};
1.1714 +
1.1715 +class ICTypeUpdate_PrimitiveSet : public TypeCheckPrimitiveSetStub
1.1716 +{
1.1717 + friend class ICStubSpace;
1.1718 +
1.1719 + ICTypeUpdate_PrimitiveSet(JitCode *stubCode, uint16_t flags)
1.1720 + : TypeCheckPrimitiveSetStub(TypeUpdate_PrimitiveSet, stubCode, flags)
1.1721 + {}
1.1722 +
1.1723 + public:
1.1724 + static inline ICTypeUpdate_PrimitiveSet *New(ICStubSpace *space, JitCode *code,
1.1725 + uint16_t flags)
1.1726 + {
1.1727 + if (!code)
1.1728 + return nullptr;
1.1729 + return space->allocate<ICTypeUpdate_PrimitiveSet>(code, flags);
1.1730 + }
1.1731 +
1.1732 + class Compiler : public TypeCheckPrimitiveSetStub::Compiler {
1.1733 + protected:
1.1734 + bool generateStubCode(MacroAssembler &masm);
1.1735 +
1.1736 + public:
1.1737 + Compiler(JSContext *cx, ICTypeUpdate_PrimitiveSet *existingStub, JSValueType type)
1.1738 + : TypeCheckPrimitiveSetStub::Compiler(cx, TypeUpdate_PrimitiveSet, existingStub, type)
1.1739 + {}
1.1740 +
1.1741 + ICTypeUpdate_PrimitiveSet *updateStub() {
1.1742 + TypeCheckPrimitiveSetStub *stub =
1.1743 + this->TypeCheckPrimitiveSetStub::Compiler::updateStub();
1.1744 + if (!stub)
1.1745 + return nullptr;
1.1746 + return stub->toUpdateStub();
1.1747 + }
1.1748 +
1.1749 + ICTypeUpdate_PrimitiveSet *getStub(ICStubSpace *space) {
1.1750 + JS_ASSERT(!existingStub_);
1.1751 + return ICTypeUpdate_PrimitiveSet::New(space, getStubCode(), flags_);
1.1752 + }
1.1753 + };
1.1754 +};
1.1755 +
1.1756 +// Type update stub to handle a singleton object.
1.1757 +class ICTypeUpdate_SingleObject : public ICStub
1.1758 +{
1.1759 + friend class ICStubSpace;
1.1760 +
1.1761 + HeapPtrObject obj_;
1.1762 +
1.1763 + ICTypeUpdate_SingleObject(JitCode *stubCode, HandleObject obj);
1.1764 +
1.1765 + public:
1.1766 + static inline ICTypeUpdate_SingleObject *New(ICStubSpace *space, JitCode *code,
1.1767 + HandleObject obj)
1.1768 + {
1.1769 + if (!code)
1.1770 + return nullptr;
1.1771 + return space->allocate<ICTypeUpdate_SingleObject>(code, obj);
1.1772 + }
1.1773 +
1.1774 + HeapPtrObject &object() {
1.1775 + return obj_;
1.1776 + }
1.1777 +
1.1778 + static size_t offsetOfObject() {
1.1779 + return offsetof(ICTypeUpdate_SingleObject, obj_);
1.1780 + }
1.1781 +
1.1782 + class Compiler : public ICStubCompiler {
1.1783 + protected:
1.1784 + HandleObject obj_;
1.1785 + bool generateStubCode(MacroAssembler &masm);
1.1786 +
1.1787 + public:
1.1788 + Compiler(JSContext *cx, HandleObject obj)
1.1789 + : ICStubCompiler(cx, TypeUpdate_SingleObject),
1.1790 + obj_(obj)
1.1791 + { }
1.1792 +
1.1793 + ICTypeUpdate_SingleObject *getStub(ICStubSpace *space) {
1.1794 + return ICTypeUpdate_SingleObject::New(space, getStubCode(), obj_);
1.1795 + }
1.1796 + };
1.1797 +};
1.1798 +
1.1799 +// Type update stub to handle a single TypeObject.
1.1800 +class ICTypeUpdate_TypeObject : public ICStub
1.1801 +{
1.1802 + friend class ICStubSpace;
1.1803 +
1.1804 + HeapPtrTypeObject type_;
1.1805 +
1.1806 + ICTypeUpdate_TypeObject(JitCode *stubCode, HandleTypeObject type);
1.1807 +
1.1808 + public:
1.1809 + static inline ICTypeUpdate_TypeObject *New(ICStubSpace *space, JitCode *code,
1.1810 + HandleTypeObject type)
1.1811 + {
1.1812 + if (!code)
1.1813 + return nullptr;
1.1814 + return space->allocate<ICTypeUpdate_TypeObject>(code, type);
1.1815 + }
1.1816 +
1.1817 + HeapPtrTypeObject &type() {
1.1818 + return type_;
1.1819 + }
1.1820 +
1.1821 + static size_t offsetOfType() {
1.1822 + return offsetof(ICTypeUpdate_TypeObject, type_);
1.1823 + }
1.1824 +
1.1825 + class Compiler : public ICStubCompiler {
1.1826 + protected:
1.1827 + HandleTypeObject type_;
1.1828 + bool generateStubCode(MacroAssembler &masm);
1.1829 +
1.1830 + public:
1.1831 + Compiler(JSContext *cx, HandleTypeObject type)
1.1832 + : ICStubCompiler(cx, TypeUpdate_TypeObject),
1.1833 + type_(type)
1.1834 + { }
1.1835 +
1.1836 + ICTypeUpdate_TypeObject *getStub(ICStubSpace *space) {
1.1837 + return ICTypeUpdate_TypeObject::New(space, getStubCode(), type_);
1.1838 + }
1.1839 + };
1.1840 +};
1.1841 +
1.1842 +// This
1.1843 +// JSOP_THIS
1.1844 +
1.1845 +class ICThis_Fallback : public ICFallbackStub
1.1846 +{
1.1847 + friend class ICStubSpace;
1.1848 +
1.1849 + ICThis_Fallback(JitCode *stubCode)
1.1850 + : ICFallbackStub(ICStub::This_Fallback, stubCode) {}
1.1851 +
1.1852 + public:
1.1853 + static inline ICThis_Fallback *New(ICStubSpace *space, JitCode *code) {
1.1854 + if (!code)
1.1855 + return nullptr;
1.1856 + return space->allocate<ICThis_Fallback>(code);
1.1857 + }
1.1858 +
1.1859 + // Compiler for this stub kind.
1.1860 + class Compiler : public ICStubCompiler {
1.1861 + protected:
1.1862 + bool generateStubCode(MacroAssembler &masm);
1.1863 +
1.1864 + public:
1.1865 + Compiler(JSContext *cx)
1.1866 + : ICStubCompiler(cx, ICStub::This_Fallback) {}
1.1867 +
1.1868 + ICStub *getStub(ICStubSpace *space) {
1.1869 + return ICThis_Fallback::New(space, getStubCode());
1.1870 + }
1.1871 + };
1.1872 +};
1.1873 +
1.1874 +class ICNewArray_Fallback : public ICFallbackStub
1.1875 +{
1.1876 + friend class ICStubSpace;
1.1877 +
1.1878 + HeapPtrObject templateObject_;
1.1879 +
1.1880 + ICNewArray_Fallback(JitCode *stubCode, JSObject *templateObject)
1.1881 + : ICFallbackStub(ICStub::NewArray_Fallback, stubCode), templateObject_(templateObject)
1.1882 + {}
1.1883 +
1.1884 + public:
1.1885 + static inline ICNewArray_Fallback *New(ICStubSpace *space, JitCode *code,
1.1886 + JSObject *templateObject) {
1.1887 + if (!code)
1.1888 + return nullptr;
1.1889 + return space->allocate<ICNewArray_Fallback>(code, templateObject);
1.1890 + }
1.1891 +
1.1892 + class Compiler : public ICStubCompiler {
1.1893 + RootedObject templateObject;
1.1894 + bool generateStubCode(MacroAssembler &masm);
1.1895 +
1.1896 + public:
1.1897 + Compiler(JSContext *cx, JSObject *templateObject)
1.1898 + : ICStubCompiler(cx, ICStub::NewArray_Fallback),
1.1899 + templateObject(cx, templateObject)
1.1900 + {}
1.1901 +
1.1902 + ICStub *getStub(ICStubSpace *space) {
1.1903 + return ICNewArray_Fallback::New(space, getStubCode(), templateObject);
1.1904 + }
1.1905 + };
1.1906 +
1.1907 + HeapPtrObject &templateObject() {
1.1908 + return templateObject_;
1.1909 + }
1.1910 +};
1.1911 +
1.1912 +class ICNewObject_Fallback : public ICFallbackStub
1.1913 +{
1.1914 + friend class ICStubSpace;
1.1915 +
1.1916 + HeapPtrObject templateObject_;
1.1917 +
1.1918 + ICNewObject_Fallback(JitCode *stubCode, JSObject *templateObject)
1.1919 + : ICFallbackStub(ICStub::NewObject_Fallback, stubCode), templateObject_(templateObject)
1.1920 + {}
1.1921 +
1.1922 + public:
1.1923 + static inline ICNewObject_Fallback *New(ICStubSpace *space, JitCode *code,
1.1924 + JSObject *templateObject) {
1.1925 + if (!code)
1.1926 + return nullptr;
1.1927 + return space->allocate<ICNewObject_Fallback>(code, templateObject);
1.1928 + }
1.1929 +
1.1930 + class Compiler : public ICStubCompiler {
1.1931 + RootedObject templateObject;
1.1932 + bool generateStubCode(MacroAssembler &masm);
1.1933 +
1.1934 + public:
1.1935 + Compiler(JSContext *cx, JSObject *templateObject)
1.1936 + : ICStubCompiler(cx, ICStub::NewObject_Fallback),
1.1937 + templateObject(cx, templateObject)
1.1938 + {}
1.1939 +
1.1940 + ICStub *getStub(ICStubSpace *space) {
1.1941 + return ICNewObject_Fallback::New(space, getStubCode(), templateObject);
1.1942 + }
1.1943 + };
1.1944 +
1.1945 + HeapPtrObject &templateObject() {
1.1946 + return templateObject_;
1.1947 + }
1.1948 +};
1.1949 +
1.1950 +// Compare
1.1951 +// JSOP_LT
1.1952 +// JSOP_GT
1.1953 +
1.1954 +class ICCompare_Fallback : public ICFallbackStub
1.1955 +{
1.1956 + friend class ICStubSpace;
1.1957 +
1.1958 + ICCompare_Fallback(JitCode *stubCode)
1.1959 + : ICFallbackStub(ICStub::Compare_Fallback, stubCode) {}
1.1960 +
1.1961 + public:
1.1962 + static const uint32_t MAX_OPTIMIZED_STUBS = 8;
1.1963 +
1.1964 + static inline ICCompare_Fallback *New(ICStubSpace *space, JitCode *code) {
1.1965 + if (!code)
1.1966 + return nullptr;
1.1967 + return space->allocate<ICCompare_Fallback>(code);
1.1968 + }
1.1969 +
1.1970 + // Compiler for this stub kind.
1.1971 + class Compiler : public ICStubCompiler {
1.1972 + protected:
1.1973 + bool generateStubCode(MacroAssembler &masm);
1.1974 +
1.1975 + public:
1.1976 + Compiler(JSContext *cx)
1.1977 + : ICStubCompiler(cx, ICStub::Compare_Fallback) {}
1.1978 +
1.1979 + ICStub *getStub(ICStubSpace *space) {
1.1980 + return ICCompare_Fallback::New(space, getStubCode());
1.1981 + }
1.1982 + };
1.1983 +};
1.1984 +
1.1985 +class ICCompare_Int32 : public ICStub
1.1986 +{
1.1987 + friend class ICStubSpace;
1.1988 +
1.1989 + ICCompare_Int32(JitCode *stubCode)
1.1990 + : ICStub(ICStub::Compare_Int32, stubCode) {}
1.1991 +
1.1992 + public:
1.1993 + static inline ICCompare_Int32 *New(ICStubSpace *space, JitCode *code) {
1.1994 + if (!code)
1.1995 + return nullptr;
1.1996 + return space->allocate<ICCompare_Int32>(code);
1.1997 + }
1.1998 +
1.1999 + // Compiler for this stub kind.
1.2000 + class Compiler : public ICMultiStubCompiler {
1.2001 + protected:
1.2002 + bool generateStubCode(MacroAssembler &masm);
1.2003 +
1.2004 + public:
1.2005 + Compiler(JSContext *cx, JSOp op)
1.2006 + : ICMultiStubCompiler(cx, ICStub::Compare_Int32, op) {}
1.2007 +
1.2008 + ICStub *getStub(ICStubSpace *space) {
1.2009 + return ICCompare_Int32::New(space, getStubCode());
1.2010 + }
1.2011 + };
1.2012 +};
1.2013 +
1.2014 +class ICCompare_Double : public ICStub
1.2015 +{
1.2016 + friend class ICStubSpace;
1.2017 +
1.2018 + ICCompare_Double(JitCode *stubCode)
1.2019 + : ICStub(ICStub::Compare_Double, stubCode)
1.2020 + {}
1.2021 +
1.2022 + public:
1.2023 + static inline ICCompare_Double *New(ICStubSpace *space, JitCode *code) {
1.2024 + if (!code)
1.2025 + return nullptr;
1.2026 + return space->allocate<ICCompare_Double>(code);
1.2027 + }
1.2028 +
1.2029 + class Compiler : public ICMultiStubCompiler {
1.2030 + protected:
1.2031 + bool generateStubCode(MacroAssembler &masm);
1.2032 +
1.2033 + public:
1.2034 + Compiler(JSContext *cx, JSOp op)
1.2035 + : ICMultiStubCompiler(cx, ICStub::Compare_Double, op)
1.2036 + {}
1.2037 +
1.2038 + ICStub *getStub(ICStubSpace *space) {
1.2039 + return ICCompare_Double::New(space, getStubCode());
1.2040 + }
1.2041 + };
1.2042 +};
1.2043 +
1.2044 +class ICCompare_NumberWithUndefined : public ICStub
1.2045 +{
1.2046 + friend class ICStubSpace;
1.2047 +
1.2048 + ICCompare_NumberWithUndefined(JitCode *stubCode, bool lhsIsUndefined)
1.2049 + : ICStub(ICStub::Compare_NumberWithUndefined, stubCode)
1.2050 + {
1.2051 + extra_ = lhsIsUndefined;
1.2052 + }
1.2053 +
1.2054 + public:
1.2055 + static inline ICCompare_NumberWithUndefined *New(ICStubSpace *space, JitCode *code, bool lhsIsUndefined) {
1.2056 + if (!code)
1.2057 + return nullptr;
1.2058 + return space->allocate<ICCompare_NumberWithUndefined>(code, lhsIsUndefined);
1.2059 + }
1.2060 +
1.2061 + bool lhsIsUndefined() {
1.2062 + return extra_;
1.2063 + }
1.2064 +
1.2065 + class Compiler : public ICMultiStubCompiler {
1.2066 + protected:
1.2067 + bool generateStubCode(MacroAssembler &masm);
1.2068 +
1.2069 + bool lhsIsUndefined;
1.2070 +
1.2071 + public:
1.2072 + Compiler(JSContext *cx, JSOp op, bool lhsIsUndefined)
1.2073 + : ICMultiStubCompiler(cx, ICStub::Compare_NumberWithUndefined, op),
1.2074 + lhsIsUndefined(lhsIsUndefined)
1.2075 + {}
1.2076 +
1.2077 + virtual int32_t getKey() const {
1.2078 + return static_cast<int32_t>(kind)
1.2079 + | (static_cast<int32_t>(op) << 16)
1.2080 + | (static_cast<int32_t>(lhsIsUndefined) << 24);
1.2081 + }
1.2082 +
1.2083 + ICStub *getStub(ICStubSpace *space) {
1.2084 + return ICCompare_NumberWithUndefined::New(space, getStubCode(), lhsIsUndefined);
1.2085 + }
1.2086 + };
1.2087 +};
1.2088 +
1.2089 +class ICCompare_String : public ICStub
1.2090 +{
1.2091 + friend class ICStubSpace;
1.2092 +
1.2093 + ICCompare_String(JitCode *stubCode)
1.2094 + : ICStub(ICStub::Compare_String, stubCode)
1.2095 + {}
1.2096 +
1.2097 + public:
1.2098 + static inline ICCompare_String *New(ICStubSpace *space, JitCode *code) {
1.2099 + if (!code)
1.2100 + return nullptr;
1.2101 + return space->allocate<ICCompare_String>(code);
1.2102 + }
1.2103 +
1.2104 + class Compiler : public ICMultiStubCompiler {
1.2105 + protected:
1.2106 + bool generateStubCode(MacroAssembler &masm);
1.2107 +
1.2108 + public:
1.2109 + Compiler(JSContext *cx, JSOp op)
1.2110 + : ICMultiStubCompiler(cx, ICStub::Compare_String, op)
1.2111 + {}
1.2112 +
1.2113 + ICStub *getStub(ICStubSpace *space) {
1.2114 + return ICCompare_String::New(space, getStubCode());
1.2115 + }
1.2116 + };
1.2117 +};
1.2118 +
1.2119 +class ICCompare_Boolean : public ICStub
1.2120 +{
1.2121 + friend class ICStubSpace;
1.2122 +
1.2123 + ICCompare_Boolean(JitCode *stubCode)
1.2124 + : ICStub(ICStub::Compare_Boolean, stubCode)
1.2125 + {}
1.2126 +
1.2127 + public:
1.2128 + static inline ICCompare_Boolean *New(ICStubSpace *space, JitCode *code) {
1.2129 + if (!code)
1.2130 + return nullptr;
1.2131 + return space->allocate<ICCompare_Boolean>(code);
1.2132 + }
1.2133 +
1.2134 + class Compiler : public ICMultiStubCompiler {
1.2135 + protected:
1.2136 + bool generateStubCode(MacroAssembler &masm);
1.2137 +
1.2138 + public:
1.2139 + Compiler(JSContext *cx, JSOp op)
1.2140 + : ICMultiStubCompiler(cx, ICStub::Compare_Boolean, op)
1.2141 + {}
1.2142 +
1.2143 + ICStub *getStub(ICStubSpace *space) {
1.2144 + return ICCompare_Boolean::New(space, getStubCode());
1.2145 + }
1.2146 + };
1.2147 +};
1.2148 +
1.2149 +class ICCompare_Object : public ICStub
1.2150 +{
1.2151 + friend class ICStubSpace;
1.2152 +
1.2153 + ICCompare_Object(JitCode *stubCode)
1.2154 + : ICStub(ICStub::Compare_Object, stubCode)
1.2155 + {}
1.2156 +
1.2157 + public:
1.2158 + static inline ICCompare_Object *New(ICStubSpace *space, JitCode *code) {
1.2159 + if (!code)
1.2160 + return nullptr;
1.2161 + return space->allocate<ICCompare_Object>(code);
1.2162 + }
1.2163 +
1.2164 + class Compiler : public ICMultiStubCompiler {
1.2165 + protected:
1.2166 + bool generateStubCode(MacroAssembler &masm);
1.2167 +
1.2168 + public:
1.2169 + Compiler(JSContext *cx, JSOp op)
1.2170 + : ICMultiStubCompiler(cx, ICStub::Compare_Object, op)
1.2171 + {}
1.2172 +
1.2173 + ICStub *getStub(ICStubSpace *space) {
1.2174 + return ICCompare_Object::New(space, getStubCode());
1.2175 + }
1.2176 + };
1.2177 +};
1.2178 +
1.2179 +class ICCompare_ObjectWithUndefined : public ICStub
1.2180 +{
1.2181 + friend class ICStubSpace;
1.2182 +
1.2183 + ICCompare_ObjectWithUndefined(JitCode *stubCode)
1.2184 + : ICStub(ICStub::Compare_ObjectWithUndefined, stubCode)
1.2185 + {}
1.2186 +
1.2187 + public:
1.2188 + static inline ICCompare_ObjectWithUndefined *New(ICStubSpace *space, JitCode *code) {
1.2189 + if (!code)
1.2190 + return nullptr;
1.2191 + return space->allocate<ICCompare_ObjectWithUndefined>(code);
1.2192 + }
1.2193 +
1.2194 + class Compiler : public ICMultiStubCompiler {
1.2195 + protected:
1.2196 + bool generateStubCode(MacroAssembler &masm);
1.2197 +
1.2198 + bool lhsIsUndefined;
1.2199 + bool compareWithNull;
1.2200 +
1.2201 + public:
1.2202 + Compiler(JSContext *cx, JSOp op, bool lhsIsUndefined, bool compareWithNull)
1.2203 + : ICMultiStubCompiler(cx, ICStub::Compare_ObjectWithUndefined, op),
1.2204 + lhsIsUndefined(lhsIsUndefined),
1.2205 + compareWithNull(compareWithNull)
1.2206 + {}
1.2207 +
1.2208 + virtual int32_t getKey() const {
1.2209 + return static_cast<int32_t>(kind)
1.2210 + | (static_cast<int32_t>(op) << 16)
1.2211 + | (static_cast<int32_t>(lhsIsUndefined) << 24)
1.2212 + | (static_cast<int32_t>(compareWithNull) << 25);
1.2213 + }
1.2214 +
1.2215 + ICStub *getStub(ICStubSpace *space) {
1.2216 + return ICCompare_ObjectWithUndefined::New(space, getStubCode());
1.2217 + }
1.2218 + };
1.2219 +};
1.2220 +
1.2221 +class ICCompare_Int32WithBoolean : public ICStub
1.2222 +{
1.2223 + friend class ICStubSpace;
1.2224 +
1.2225 + ICCompare_Int32WithBoolean(JitCode *stubCode, bool lhsIsInt32)
1.2226 + : ICStub(ICStub::Compare_Int32WithBoolean, stubCode)
1.2227 + {
1.2228 + extra_ = lhsIsInt32;
1.2229 + }
1.2230 +
1.2231 + public:
1.2232 + static inline ICCompare_Int32WithBoolean *New(ICStubSpace *space, JitCode *code,
1.2233 + bool lhsIsInt32)
1.2234 + {
1.2235 + if (!code)
1.2236 + return nullptr;
1.2237 + return space->allocate<ICCompare_Int32WithBoolean>(code, lhsIsInt32);
1.2238 + }
1.2239 +
1.2240 + bool lhsIsInt32() const {
1.2241 + return extra_;
1.2242 + }
1.2243 +
1.2244 + // Compiler for this stub kind.
1.2245 + class Compiler : public ICStubCompiler {
1.2246 + protected:
1.2247 + JSOp op_;
1.2248 + bool lhsIsInt32_;
1.2249 + bool generateStubCode(MacroAssembler &masm);
1.2250 +
1.2251 + virtual int32_t getKey() const {
1.2252 + return (static_cast<int32_t>(kind) | (static_cast<int32_t>(op_) << 16) |
1.2253 + (static_cast<int32_t>(lhsIsInt32_) << 24));
1.2254 + }
1.2255 +
1.2256 + public:
1.2257 + Compiler(JSContext *cx, JSOp op, bool lhsIsInt32)
1.2258 + : ICStubCompiler(cx, ICStub::Compare_Int32WithBoolean),
1.2259 + op_(op),
1.2260 + lhsIsInt32_(lhsIsInt32)
1.2261 + {}
1.2262 +
1.2263 + ICStub *getStub(ICStubSpace *space) {
1.2264 + return ICCompare_Int32WithBoolean::New(space, getStubCode(), lhsIsInt32_);
1.2265 + }
1.2266 + };
1.2267 +};
1.2268 +
1.2269 +// ToBool
1.2270 +// JSOP_IFNE
1.2271 +
1.2272 +class ICToBool_Fallback : public ICFallbackStub
1.2273 +{
1.2274 + friend class ICStubSpace;
1.2275 +
1.2276 + ICToBool_Fallback(JitCode *stubCode)
1.2277 + : ICFallbackStub(ICStub::ToBool_Fallback, stubCode) {}
1.2278 +
1.2279 + public:
1.2280 + static const uint32_t MAX_OPTIMIZED_STUBS = 8;
1.2281 +
1.2282 + static inline ICToBool_Fallback *New(ICStubSpace *space, JitCode *code) {
1.2283 + if (!code)
1.2284 + return nullptr;
1.2285 + return space->allocate<ICToBool_Fallback>(code);
1.2286 + }
1.2287 +
1.2288 + // Compiler for this stub kind.
1.2289 + class Compiler : public ICStubCompiler {
1.2290 + protected:
1.2291 + bool generateStubCode(MacroAssembler &masm);
1.2292 +
1.2293 + public:
1.2294 + Compiler(JSContext *cx)
1.2295 + : ICStubCompiler(cx, ICStub::ToBool_Fallback) {}
1.2296 +
1.2297 + ICStub *getStub(ICStubSpace *space) {
1.2298 + return ICToBool_Fallback::New(space, getStubCode());
1.2299 + }
1.2300 + };
1.2301 +};
1.2302 +
1.2303 +class ICToBool_Int32 : public ICStub
1.2304 +{
1.2305 + friend class ICStubSpace;
1.2306 +
1.2307 + ICToBool_Int32(JitCode *stubCode)
1.2308 + : ICStub(ICStub::ToBool_Int32, stubCode) {}
1.2309 +
1.2310 + public:
1.2311 + static inline ICToBool_Int32 *New(ICStubSpace *space, JitCode *code) {
1.2312 + if (!code)
1.2313 + return nullptr;
1.2314 + return space->allocate<ICToBool_Int32>(code);
1.2315 + }
1.2316 +
1.2317 + // Compiler for this stub kind.
1.2318 + class Compiler : public ICStubCompiler {
1.2319 + protected:
1.2320 + bool generateStubCode(MacroAssembler &masm);
1.2321 +
1.2322 + public:
1.2323 + Compiler(JSContext *cx)
1.2324 + : ICStubCompiler(cx, ICStub::ToBool_Int32) {}
1.2325 +
1.2326 + ICStub *getStub(ICStubSpace *space) {
1.2327 + return ICToBool_Int32::New(space, getStubCode());
1.2328 + }
1.2329 + };
1.2330 +};
1.2331 +
1.2332 +class ICToBool_String : public ICStub
1.2333 +{
1.2334 + friend class ICStubSpace;
1.2335 +
1.2336 + ICToBool_String(JitCode *stubCode)
1.2337 + : ICStub(ICStub::ToBool_String, stubCode) {}
1.2338 +
1.2339 + public:
1.2340 + static inline ICToBool_String *New(ICStubSpace *space, JitCode *code) {
1.2341 + if (!code)
1.2342 + return nullptr;
1.2343 + return space->allocate<ICToBool_String>(code);
1.2344 + }
1.2345 +
1.2346 + // Compiler for this stub kind.
1.2347 + class Compiler : public ICStubCompiler {
1.2348 + protected:
1.2349 + bool generateStubCode(MacroAssembler &masm);
1.2350 +
1.2351 + public:
1.2352 + Compiler(JSContext *cx)
1.2353 + : ICStubCompiler(cx, ICStub::ToBool_String) {}
1.2354 +
1.2355 + ICStub *getStub(ICStubSpace *space) {
1.2356 + return ICToBool_String::New(space, getStubCode());
1.2357 + }
1.2358 + };
1.2359 +};
1.2360 +
1.2361 +class ICToBool_NullUndefined : public ICStub
1.2362 +{
1.2363 + friend class ICStubSpace;
1.2364 +
1.2365 + ICToBool_NullUndefined(JitCode *stubCode)
1.2366 + : ICStub(ICStub::ToBool_NullUndefined, stubCode) {}
1.2367 +
1.2368 + public:
1.2369 + static inline ICToBool_NullUndefined *New(ICStubSpace *space, JitCode *code) {
1.2370 + if (!code)
1.2371 + return nullptr;
1.2372 + return space->allocate<ICToBool_NullUndefined>(code);
1.2373 + }
1.2374 +
1.2375 + // Compiler for this stub kind.
1.2376 + class Compiler : public ICStubCompiler {
1.2377 + protected:
1.2378 + bool generateStubCode(MacroAssembler &masm);
1.2379 +
1.2380 + public:
1.2381 + Compiler(JSContext *cx)
1.2382 + : ICStubCompiler(cx, ICStub::ToBool_NullUndefined) {}
1.2383 +
1.2384 + ICStub *getStub(ICStubSpace *space) {
1.2385 + return ICToBool_NullUndefined::New(space, getStubCode());
1.2386 + }
1.2387 + };
1.2388 +};
1.2389 +
1.2390 +class ICToBool_Double : public ICStub
1.2391 +{
1.2392 + friend class ICStubSpace;
1.2393 +
1.2394 + ICToBool_Double(JitCode *stubCode)
1.2395 + : ICStub(ICStub::ToBool_Double, stubCode) {}
1.2396 +
1.2397 + public:
1.2398 + static inline ICToBool_Double *New(ICStubSpace *space, JitCode *code) {
1.2399 + if (!code)
1.2400 + return nullptr;
1.2401 + return space->allocate<ICToBool_Double>(code);
1.2402 + }
1.2403 +
1.2404 + // Compiler for this stub kind.
1.2405 + class Compiler : public ICStubCompiler {
1.2406 + protected:
1.2407 + bool generateStubCode(MacroAssembler &masm);
1.2408 +
1.2409 + public:
1.2410 + Compiler(JSContext *cx)
1.2411 + : ICStubCompiler(cx, ICStub::ToBool_Double) {}
1.2412 +
1.2413 + ICStub *getStub(ICStubSpace *space) {
1.2414 + return ICToBool_Double::New(space, getStubCode());
1.2415 + }
1.2416 + };
1.2417 +};
1.2418 +
1.2419 +class ICToBool_Object : public ICStub
1.2420 +{
1.2421 + friend class ICStubSpace;
1.2422 +
1.2423 + ICToBool_Object(JitCode *stubCode)
1.2424 + : ICStub(ICStub::ToBool_Object, stubCode) {}
1.2425 +
1.2426 + public:
1.2427 + static inline ICToBool_Object *New(ICStubSpace *space, JitCode *code) {
1.2428 + if (!code)
1.2429 + return nullptr;
1.2430 + return space->allocate<ICToBool_Object>(code);
1.2431 + }
1.2432 +
1.2433 + // Compiler for this stub kind.
1.2434 + class Compiler : public ICStubCompiler {
1.2435 + protected:
1.2436 + bool generateStubCode(MacroAssembler &masm);
1.2437 +
1.2438 + public:
1.2439 + Compiler(JSContext *cx)
1.2440 + : ICStubCompiler(cx, ICStub::ToBool_Object) {}
1.2441 +
1.2442 + ICStub *getStub(ICStubSpace *space) {
1.2443 + return ICToBool_Object::New(space, getStubCode());
1.2444 + }
1.2445 + };
1.2446 +};
1.2447 +
1.2448 +// ToNumber
1.2449 +// JSOP_POS
1.2450 +
1.2451 +class ICToNumber_Fallback : public ICFallbackStub
1.2452 +{
1.2453 + friend class ICStubSpace;
1.2454 +
1.2455 + ICToNumber_Fallback(JitCode *stubCode)
1.2456 + : ICFallbackStub(ICStub::ToNumber_Fallback, stubCode) {}
1.2457 +
1.2458 + public:
1.2459 + static inline ICToNumber_Fallback *New(ICStubSpace *space, JitCode *code) {
1.2460 + if (!code)
1.2461 + return nullptr;
1.2462 + return space->allocate<ICToNumber_Fallback>(code);
1.2463 + }
1.2464 +
1.2465 + // Compiler for this stub kind.
1.2466 + class Compiler : public ICStubCompiler {
1.2467 + protected:
1.2468 + bool generateStubCode(MacroAssembler &masm);
1.2469 +
1.2470 + public:
1.2471 + Compiler(JSContext *cx)
1.2472 + : ICStubCompiler(cx, ICStub::ToNumber_Fallback) {}
1.2473 +
1.2474 + ICStub *getStub(ICStubSpace *space) {
1.2475 + return ICToNumber_Fallback::New(space, getStubCode());
1.2476 + }
1.2477 + };
1.2478 +};
1.2479 +
1.2480 +// BinaryArith
1.2481 +// JSOP_ADD
1.2482 +// JSOP_BITAND, JSOP_BITXOR, JSOP_BITOR
1.2483 +// JSOP_LSH, JSOP_RSH, JSOP_URSH
1.2484 +
1.2485 +class ICBinaryArith_Fallback : public ICFallbackStub
1.2486 +{
1.2487 + friend class ICStubSpace;
1.2488 +
1.2489 + ICBinaryArith_Fallback(JitCode *stubCode)
1.2490 + : ICFallbackStub(BinaryArith_Fallback, stubCode)
1.2491 + {
1.2492 + extra_ = 0;
1.2493 + }
1.2494 +
1.2495 + static const uint16_t SAW_DOUBLE_RESULT_BIT = 0x1;
1.2496 + static const uint16_t UNOPTIMIZABLE_OPERANDS_BIT = 0x2;
1.2497 +
1.2498 + public:
1.2499 + static const uint32_t MAX_OPTIMIZED_STUBS = 8;
1.2500 +
1.2501 + static inline ICBinaryArith_Fallback *New(ICStubSpace *space, JitCode *code) {
1.2502 + if (!code)
1.2503 + return nullptr;
1.2504 + return space->allocate<ICBinaryArith_Fallback>(code);
1.2505 + }
1.2506 +
1.2507 + bool sawDoubleResult() const {
1.2508 + return extra_ & SAW_DOUBLE_RESULT_BIT;
1.2509 + }
1.2510 + void setSawDoubleResult() {
1.2511 + extra_ |= SAW_DOUBLE_RESULT_BIT;
1.2512 + }
1.2513 + bool hadUnoptimizableOperands() const {
1.2514 + return extra_ & UNOPTIMIZABLE_OPERANDS_BIT;
1.2515 + }
1.2516 + void noteUnoptimizableOperands() {
1.2517 + extra_ |= UNOPTIMIZABLE_OPERANDS_BIT;
1.2518 + }
1.2519 +
1.2520 + // Compiler for this stub kind.
1.2521 + class Compiler : public ICStubCompiler {
1.2522 + protected:
1.2523 + bool generateStubCode(MacroAssembler &masm);
1.2524 +
1.2525 + public:
1.2526 + Compiler(JSContext *cx)
1.2527 + : ICStubCompiler(cx, ICStub::BinaryArith_Fallback) {}
1.2528 +
1.2529 + ICStub *getStub(ICStubSpace *space) {
1.2530 + return ICBinaryArith_Fallback::New(space, getStubCode());
1.2531 + }
1.2532 + };
1.2533 +};
1.2534 +
1.2535 +class ICBinaryArith_Int32 : public ICStub
1.2536 +{
1.2537 + friend class ICStubSpace;
1.2538 +
1.2539 + ICBinaryArith_Int32(JitCode *stubCode, bool allowDouble)
1.2540 + : ICStub(BinaryArith_Int32, stubCode)
1.2541 + {
1.2542 + extra_ = allowDouble;
1.2543 + }
1.2544 +
1.2545 + public:
1.2546 + static inline ICBinaryArith_Int32 *New(ICStubSpace *space, JitCode *code, bool allowDouble) {
1.2547 + if (!code)
1.2548 + return nullptr;
1.2549 + return space->allocate<ICBinaryArith_Int32>(code, allowDouble);
1.2550 + }
1.2551 + bool allowDouble() const {
1.2552 + return extra_;
1.2553 + }
1.2554 +
1.2555 + // Compiler for this stub kind.
1.2556 + class Compiler : public ICStubCompiler {
1.2557 + protected:
1.2558 + JSOp op_;
1.2559 + bool allowDouble_;
1.2560 +
1.2561 + bool generateStubCode(MacroAssembler &masm);
1.2562 +
1.2563 + // Stub keys shift-stubs need to encode the kind, the JSOp and if we allow doubles.
1.2564 + virtual int32_t getKey() const {
1.2565 + return (static_cast<int32_t>(kind) | (static_cast<int32_t>(op_) << 16) |
1.2566 + (static_cast<int32_t>(allowDouble_) << 24));
1.2567 + }
1.2568 +
1.2569 + public:
1.2570 + Compiler(JSContext *cx, JSOp op, bool allowDouble)
1.2571 + : ICStubCompiler(cx, ICStub::BinaryArith_Int32),
1.2572 + op_(op), allowDouble_(allowDouble) {}
1.2573 +
1.2574 + ICStub *getStub(ICStubSpace *space) {
1.2575 + return ICBinaryArith_Int32::New(space, getStubCode(), allowDouble_);
1.2576 + }
1.2577 + };
1.2578 +};
1.2579 +
1.2580 +class ICBinaryArith_StringConcat : public ICStub
1.2581 +{
1.2582 + friend class ICStubSpace;
1.2583 +
1.2584 + ICBinaryArith_StringConcat(JitCode *stubCode)
1.2585 + : ICStub(BinaryArith_StringConcat, stubCode)
1.2586 + {}
1.2587 +
1.2588 + public:
1.2589 + static inline ICBinaryArith_StringConcat *New(ICStubSpace *space, JitCode *code) {
1.2590 + if (!code)
1.2591 + return nullptr;
1.2592 + return space->allocate<ICBinaryArith_StringConcat>(code);
1.2593 + }
1.2594 +
1.2595 + class Compiler : public ICStubCompiler {
1.2596 + protected:
1.2597 + bool generateStubCode(MacroAssembler &masm);
1.2598 +
1.2599 + public:
1.2600 + Compiler(JSContext *cx)
1.2601 + : ICStubCompiler(cx, ICStub::BinaryArith_StringConcat)
1.2602 + {}
1.2603 +
1.2604 + ICStub *getStub(ICStubSpace *space) {
1.2605 + return ICBinaryArith_StringConcat::New(space, getStubCode());
1.2606 + }
1.2607 + };
1.2608 +};
1.2609 +
1.2610 +class ICBinaryArith_StringObjectConcat : public ICStub
1.2611 +{
1.2612 + friend class ICStubSpace;
1.2613 +
1.2614 + ICBinaryArith_StringObjectConcat(JitCode *stubCode, bool lhsIsString)
1.2615 + : ICStub(BinaryArith_StringObjectConcat, stubCode)
1.2616 + {
1.2617 + extra_ = lhsIsString;
1.2618 + }
1.2619 +
1.2620 + public:
1.2621 + static inline ICBinaryArith_StringObjectConcat *New(ICStubSpace *space, JitCode *code,
1.2622 + bool lhsIsString) {
1.2623 + if (!code)
1.2624 + return nullptr;
1.2625 + return space->allocate<ICBinaryArith_StringObjectConcat>(code, lhsIsString);
1.2626 + }
1.2627 +
1.2628 + bool lhsIsString() const {
1.2629 + return extra_;
1.2630 + }
1.2631 +
1.2632 + class Compiler : public ICStubCompiler {
1.2633 + protected:
1.2634 + bool lhsIsString_;
1.2635 + bool generateStubCode(MacroAssembler &masm);
1.2636 +
1.2637 + virtual int32_t getKey() const {
1.2638 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(lhsIsString_) << 16);
1.2639 + }
1.2640 +
1.2641 + public:
1.2642 + Compiler(JSContext *cx, bool lhsIsString)
1.2643 + : ICStubCompiler(cx, ICStub::BinaryArith_StringObjectConcat),
1.2644 + lhsIsString_(lhsIsString)
1.2645 + {}
1.2646 +
1.2647 + ICStub *getStub(ICStubSpace *space) {
1.2648 + return ICBinaryArith_StringObjectConcat::New(space, getStubCode(), lhsIsString_);
1.2649 + }
1.2650 + };
1.2651 +};
1.2652 +
1.2653 +class ICBinaryArith_Double : public ICStub
1.2654 +{
1.2655 + friend class ICStubSpace;
1.2656 +
1.2657 + ICBinaryArith_Double(JitCode *stubCode)
1.2658 + : ICStub(BinaryArith_Double, stubCode)
1.2659 + {}
1.2660 +
1.2661 + public:
1.2662 + static inline ICBinaryArith_Double *New(ICStubSpace *space, JitCode *code) {
1.2663 + if (!code)
1.2664 + return nullptr;
1.2665 + return space->allocate<ICBinaryArith_Double>(code);
1.2666 + }
1.2667 +
1.2668 + class Compiler : public ICMultiStubCompiler {
1.2669 + protected:
1.2670 + bool generateStubCode(MacroAssembler &masm);
1.2671 +
1.2672 + public:
1.2673 + Compiler(JSContext *cx, JSOp op)
1.2674 + : ICMultiStubCompiler(cx, ICStub::BinaryArith_Double, op)
1.2675 + {}
1.2676 +
1.2677 + ICStub *getStub(ICStubSpace *space) {
1.2678 + return ICBinaryArith_Double::New(space, getStubCode());
1.2679 + }
1.2680 + };
1.2681 +};
1.2682 +
1.2683 +class ICBinaryArith_BooleanWithInt32 : public ICStub
1.2684 +{
1.2685 + friend class ICStubSpace;
1.2686 +
1.2687 + ICBinaryArith_BooleanWithInt32(JitCode *stubCode, bool lhsIsBool, bool rhsIsBool)
1.2688 + : ICStub(BinaryArith_BooleanWithInt32, stubCode)
1.2689 + {
1.2690 + JS_ASSERT(lhsIsBool || rhsIsBool);
1.2691 + extra_ = 0;
1.2692 + if (lhsIsBool)
1.2693 + extra_ |= 1;
1.2694 + if (rhsIsBool)
1.2695 + extra_ |= 2;
1.2696 + }
1.2697 +
1.2698 + public:
1.2699 + static inline ICBinaryArith_BooleanWithInt32 *New(ICStubSpace *space, JitCode *code,
1.2700 + bool lhsIsBool, bool rhsIsBool) {
1.2701 + if (!code)
1.2702 + return nullptr;
1.2703 + return space->allocate<ICBinaryArith_BooleanWithInt32>(code, lhsIsBool, rhsIsBool);
1.2704 + }
1.2705 +
1.2706 + bool lhsIsBoolean() const {
1.2707 + return extra_ & 1;
1.2708 + }
1.2709 +
1.2710 + bool rhsIsBoolean() const {
1.2711 + return extra_ & 2;
1.2712 + }
1.2713 +
1.2714 + class Compiler : public ICStubCompiler {
1.2715 + protected:
1.2716 + JSOp op_;
1.2717 + bool lhsIsBool_;
1.2718 + bool rhsIsBool_;
1.2719 + bool generateStubCode(MacroAssembler &masm);
1.2720 +
1.2721 + virtual int32_t getKey() const {
1.2722 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(op_) << 16) |
1.2723 + (static_cast<int32_t>(lhsIsBool_) << 24) |
1.2724 + (static_cast<int32_t>(rhsIsBool_) << 25);
1.2725 + }
1.2726 +
1.2727 + public:
1.2728 + Compiler(JSContext *cx, JSOp op, bool lhsIsBool, bool rhsIsBool)
1.2729 + : ICStubCompiler(cx, ICStub::BinaryArith_BooleanWithInt32),
1.2730 + op_(op), lhsIsBool_(lhsIsBool), rhsIsBool_(rhsIsBool)
1.2731 + {
1.2732 + JS_ASSERT(op_ == JSOP_ADD || op_ == JSOP_SUB || op_ == JSOP_BITOR ||
1.2733 + op_ == JSOP_BITAND || op_ == JSOP_BITXOR);
1.2734 + JS_ASSERT(lhsIsBool_ || rhsIsBool_);
1.2735 + }
1.2736 +
1.2737 + ICStub *getStub(ICStubSpace *space) {
1.2738 + return ICBinaryArith_BooleanWithInt32::New(space, getStubCode(),
1.2739 + lhsIsBool_, rhsIsBool_);
1.2740 + }
1.2741 + };
1.2742 +};
1.2743 +
1.2744 +class ICBinaryArith_DoubleWithInt32 : public ICStub
1.2745 +{
1.2746 + friend class ICStubSpace;
1.2747 +
1.2748 + ICBinaryArith_DoubleWithInt32(JitCode *stubCode, bool lhsIsDouble)
1.2749 + : ICStub(BinaryArith_DoubleWithInt32, stubCode)
1.2750 + {
1.2751 + extra_ = lhsIsDouble;
1.2752 + }
1.2753 +
1.2754 + public:
1.2755 + static inline ICBinaryArith_DoubleWithInt32 *New(ICStubSpace *space, JitCode *code,
1.2756 + bool lhsIsDouble) {
1.2757 + if (!code)
1.2758 + return nullptr;
1.2759 + return space->allocate<ICBinaryArith_DoubleWithInt32>(code, lhsIsDouble);
1.2760 + }
1.2761 +
1.2762 + bool lhsIsDouble() const {
1.2763 + return extra_;
1.2764 + }
1.2765 +
1.2766 + class Compiler : public ICMultiStubCompiler {
1.2767 + protected:
1.2768 + bool lhsIsDouble_;
1.2769 + bool generateStubCode(MacroAssembler &masm);
1.2770 +
1.2771 + virtual int32_t getKey() const {
1.2772 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(op) << 16) |
1.2773 + (static_cast<int32_t>(lhsIsDouble_) << 24);
1.2774 + }
1.2775 +
1.2776 + public:
1.2777 + Compiler(JSContext *cx, JSOp op, bool lhsIsDouble)
1.2778 + : ICMultiStubCompiler(cx, ICStub::BinaryArith_DoubleWithInt32, op),
1.2779 + lhsIsDouble_(lhsIsDouble)
1.2780 + {}
1.2781 +
1.2782 + ICStub *getStub(ICStubSpace *space) {
1.2783 + return ICBinaryArith_DoubleWithInt32::New(space, getStubCode(), lhsIsDouble_);
1.2784 + }
1.2785 + };
1.2786 +};
1.2787 +
1.2788 +// UnaryArith
1.2789 +// JSOP_BITNOT
1.2790 +// JSOP_NEG
1.2791 +
1.2792 +class ICUnaryArith_Fallback : public ICFallbackStub
1.2793 +{
1.2794 + friend class ICStubSpace;
1.2795 +
1.2796 + ICUnaryArith_Fallback(JitCode *stubCode)
1.2797 + : ICFallbackStub(UnaryArith_Fallback, stubCode)
1.2798 + {
1.2799 + extra_ = 0;
1.2800 + }
1.2801 +
1.2802 + public:
1.2803 + static const uint32_t MAX_OPTIMIZED_STUBS = 8;
1.2804 +
1.2805 + static inline ICUnaryArith_Fallback *New(ICStubSpace *space, JitCode *code) {
1.2806 + if (!code)
1.2807 + return nullptr;
1.2808 + return space->allocate<ICUnaryArith_Fallback>(code);
1.2809 + }
1.2810 +
1.2811 + bool sawDoubleResult() {
1.2812 + return extra_;
1.2813 + }
1.2814 + void setSawDoubleResult() {
1.2815 + extra_ = 1;
1.2816 + }
1.2817 +
1.2818 + // Compiler for this stub kind.
1.2819 + class Compiler : public ICStubCompiler {
1.2820 + protected:
1.2821 + bool generateStubCode(MacroAssembler &masm);
1.2822 +
1.2823 + public:
1.2824 + Compiler(JSContext *cx)
1.2825 + : ICStubCompiler(cx, ICStub::UnaryArith_Fallback)
1.2826 + {}
1.2827 +
1.2828 + ICStub *getStub(ICStubSpace *space) {
1.2829 + return ICUnaryArith_Fallback::New(space, getStubCode());
1.2830 + }
1.2831 + };
1.2832 +};
1.2833 +
1.2834 +class ICUnaryArith_Int32 : public ICStub
1.2835 +{
1.2836 + friend class ICStubSpace;
1.2837 +
1.2838 + ICUnaryArith_Int32(JitCode *stubCode)
1.2839 + : ICStub(UnaryArith_Int32, stubCode)
1.2840 + {}
1.2841 +
1.2842 + public:
1.2843 + static inline ICUnaryArith_Int32 *New(ICStubSpace *space, JitCode *code) {
1.2844 + if (!code)
1.2845 + return nullptr;
1.2846 + return space->allocate<ICUnaryArith_Int32>(code);
1.2847 + }
1.2848 +
1.2849 + class Compiler : public ICMultiStubCompiler {
1.2850 + protected:
1.2851 + bool generateStubCode(MacroAssembler &masm);
1.2852 +
1.2853 + public:
1.2854 + Compiler(JSContext *cx, JSOp op)
1.2855 + : ICMultiStubCompiler(cx, ICStub::UnaryArith_Int32, op)
1.2856 + {}
1.2857 +
1.2858 + ICStub *getStub(ICStubSpace *space) {
1.2859 + return ICUnaryArith_Int32::New(space, getStubCode());
1.2860 + }
1.2861 + };
1.2862 +};
1.2863 +
1.2864 +class ICUnaryArith_Double : public ICStub
1.2865 +{
1.2866 + friend class ICStubSpace;
1.2867 +
1.2868 + ICUnaryArith_Double(JitCode *stubCode)
1.2869 + : ICStub(UnaryArith_Double, stubCode)
1.2870 + {}
1.2871 +
1.2872 + public:
1.2873 + static inline ICUnaryArith_Double *New(ICStubSpace *space, JitCode *code) {
1.2874 + if (!code)
1.2875 + return nullptr;
1.2876 + return space->allocate<ICUnaryArith_Double>(code);
1.2877 + }
1.2878 +
1.2879 + class Compiler : public ICMultiStubCompiler {
1.2880 + protected:
1.2881 + bool generateStubCode(MacroAssembler &masm);
1.2882 +
1.2883 + public:
1.2884 + Compiler(JSContext *cx, JSOp op)
1.2885 + : ICMultiStubCompiler(cx, ICStub::UnaryArith_Double, op)
1.2886 + {}
1.2887 +
1.2888 + ICStub *getStub(ICStubSpace *space) {
1.2889 + return ICUnaryArith_Double::New(space, getStubCode());
1.2890 + }
1.2891 + };
1.2892 +};
1.2893 +
1.2894 +// GetElem
1.2895 +// JSOP_GETELEM
1.2896 +
1.2897 +class ICGetElem_Fallback : public ICMonitoredFallbackStub
1.2898 +{
1.2899 + friend class ICStubSpace;
1.2900 +
1.2901 + ICGetElem_Fallback(JitCode *stubCode)
1.2902 + : ICMonitoredFallbackStub(ICStub::GetElem_Fallback, stubCode)
1.2903 + { }
1.2904 +
1.2905 + static const uint16_t EXTRA_NON_NATIVE = 0x1;
1.2906 + static const uint16_t EXTRA_NEGATIVE_INDEX = 0x2;
1.2907 +
1.2908 + public:
1.2909 + static const uint32_t MAX_OPTIMIZED_STUBS = 16;
1.2910 +
1.2911 + static inline ICGetElem_Fallback *New(ICStubSpace *space, JitCode *code) {
1.2912 + if (!code)
1.2913 + return nullptr;
1.2914 + return space->allocate<ICGetElem_Fallback>(code);
1.2915 + }
1.2916 +
1.2917 + void noteNonNativeAccess() {
1.2918 + extra_ |= EXTRA_NON_NATIVE;
1.2919 + }
1.2920 + bool hasNonNativeAccess() const {
1.2921 + return extra_ & EXTRA_NON_NATIVE;
1.2922 + }
1.2923 +
1.2924 + void noteNegativeIndex() {
1.2925 + extra_ |= EXTRA_NEGATIVE_INDEX;
1.2926 + }
1.2927 + bool hasNegativeIndex() const {
1.2928 + return extra_ & EXTRA_NEGATIVE_INDEX;
1.2929 + }
1.2930 +
1.2931 + // Compiler for this stub kind.
1.2932 + class Compiler : public ICStubCompiler {
1.2933 + protected:
1.2934 + bool generateStubCode(MacroAssembler &masm);
1.2935 +
1.2936 + public:
1.2937 + Compiler(JSContext *cx)
1.2938 + : ICStubCompiler(cx, ICStub::GetElem_Fallback)
1.2939 + { }
1.2940 +
1.2941 + ICStub *getStub(ICStubSpace *space) {
1.2942 + ICGetElem_Fallback *stub = ICGetElem_Fallback::New(space, getStubCode());
1.2943 + if (!stub)
1.2944 + return nullptr;
1.2945 + if (!stub->initMonitoringChain(cx, space))
1.2946 + return nullptr;
1.2947 + return stub;
1.2948 + }
1.2949 + };
1.2950 +};
1.2951 +
1.2952 +class ICGetElemNativeStub : public ICMonitoredStub
1.2953 +{
1.2954 + public:
1.2955 + enum AccessType { FixedSlot = 0, DynamicSlot, NativeGetter, ScriptedGetter };
1.2956 +
1.2957 + protected:
1.2958 + HeapPtrShape shape_;
1.2959 + HeapPtrPropertyName name_;
1.2960 +
1.2961 + static const unsigned NEEDS_ATOMIZE_SHIFT = 0;
1.2962 + static const uint16_t NEEDS_ATOMIZE_MASK = 0x1;
1.2963 +
1.2964 + static const unsigned ACCESSTYPE_SHIFT = 1;
1.2965 + static const uint16_t ACCESSTYPE_MASK = 0x3;
1.2966 +
1.2967 + ICGetElemNativeStub(ICStub::Kind kind, JitCode *stubCode, ICStub *firstMonitorStub,
1.2968 + HandleShape shape, HandlePropertyName name, AccessType acctype,
1.2969 + bool needsAtomize);
1.2970 +
1.2971 + ~ICGetElemNativeStub();
1.2972 +
1.2973 + public:
1.2974 + HeapPtrShape &shape() {
1.2975 + return shape_;
1.2976 + }
1.2977 + static size_t offsetOfShape() {
1.2978 + return offsetof(ICGetElemNativeStub, shape_);
1.2979 + }
1.2980 +
1.2981 + HeapPtrPropertyName &name() {
1.2982 + return name_;
1.2983 + }
1.2984 + static size_t offsetOfName() {
1.2985 + return offsetof(ICGetElemNativeStub, name_);
1.2986 + }
1.2987 +
1.2988 + AccessType accessType() const {
1.2989 + return static_cast<AccessType>((extra_ >> ACCESSTYPE_SHIFT) & ACCESSTYPE_MASK);
1.2990 + }
1.2991 +
1.2992 + bool needsAtomize() const {
1.2993 + return (extra_ >> NEEDS_ATOMIZE_SHIFT) & NEEDS_ATOMIZE_MASK;
1.2994 + }
1.2995 +};
1.2996 +
1.2997 +class ICGetElemNativeSlotStub : public ICGetElemNativeStub
1.2998 +{
1.2999 + protected:
1.3000 + uint32_t offset_;
1.3001 +
1.3002 + ICGetElemNativeSlotStub(ICStub::Kind kind, JitCode *stubCode, ICStub *firstMonitorStub,
1.3003 + HandleShape shape, HandlePropertyName name,
1.3004 + AccessType acctype, bool needsAtomize, uint32_t offset)
1.3005 + : ICGetElemNativeStub(kind, stubCode, firstMonitorStub, shape, name, acctype, needsAtomize),
1.3006 + offset_(offset)
1.3007 + {
1.3008 + JS_ASSERT(kind == GetElem_NativeSlot || kind == GetElem_NativePrototypeSlot);
1.3009 + JS_ASSERT(acctype == FixedSlot || acctype == DynamicSlot);
1.3010 + }
1.3011 +
1.3012 + public:
1.3013 + uint32_t offset() const {
1.3014 + return offset_;
1.3015 + }
1.3016 +
1.3017 + static size_t offsetOfOffset() {
1.3018 + return offsetof(ICGetElemNativeSlotStub, offset_);
1.3019 + }
1.3020 +};
1.3021 +
1.3022 +class ICGetElemNativeGetterStub : public ICGetElemNativeStub
1.3023 +{
1.3024 + protected:
1.3025 + HeapPtrFunction getter_;
1.3026 + uint32_t pcOffset_;
1.3027 +
1.3028 + ICGetElemNativeGetterStub(ICStub::Kind kind, JitCode *stubCode, ICStub *firstMonitorStub,
1.3029 + HandleShape shape, HandlePropertyName name, AccessType acctype,
1.3030 + bool needsAtomize, HandleFunction getter, uint32_t pcOffset);
1.3031 +
1.3032 + public:
1.3033 + HeapPtrFunction &getter() {
1.3034 + return getter_;
1.3035 + }
1.3036 + static size_t offsetOfGetter() {
1.3037 + return offsetof(ICGetElemNativeGetterStub, getter_);
1.3038 + }
1.3039 +
1.3040 + static size_t offsetOfPCOffset() {
1.3041 + return offsetof(ICGetElemNativeGetterStub, pcOffset_);
1.3042 + }
1.3043 +};
1.3044 +
1.3045 +class ICGetElem_NativeSlot : public ICGetElemNativeSlotStub
1.3046 +{
1.3047 + friend class ICStubSpace;
1.3048 + ICGetElem_NativeSlot(JitCode *stubCode, ICStub *firstMonitorStub,
1.3049 + HandleShape shape, HandlePropertyName name,
1.3050 + AccessType acctype, bool needsAtomize, uint32_t offset)
1.3051 + : ICGetElemNativeSlotStub(ICStub::GetElem_NativeSlot, stubCode, firstMonitorStub, shape,
1.3052 + name, acctype, needsAtomize, offset)
1.3053 + {}
1.3054 +
1.3055 + public:
1.3056 + static inline ICGetElem_NativeSlot *New(ICStubSpace *space, JitCode *code,
1.3057 + ICStub *firstMonitorStub,
1.3058 + HandleShape shape, HandlePropertyName name,
1.3059 + AccessType acctype, bool needsAtomize, uint32_t offset)
1.3060 + {
1.3061 + if (!code)
1.3062 + return nullptr;
1.3063 + return space->allocate<ICGetElem_NativeSlot>(code, firstMonitorStub, shape, name,
1.3064 + acctype, needsAtomize, offset);
1.3065 + }
1.3066 +};
1.3067 +
1.3068 +class ICGetElem_NativePrototypeSlot : public ICGetElemNativeSlotStub
1.3069 +{
1.3070 + friend class ICStubSpace;
1.3071 + HeapPtrObject holder_;
1.3072 + HeapPtrShape holderShape_;
1.3073 +
1.3074 + ICGetElem_NativePrototypeSlot(JitCode *stubCode, ICStub *firstMonitorStub,
1.3075 + HandleShape shape, HandlePropertyName name,
1.3076 + AccessType acctype, bool needsAtomize, uint32_t offset,
1.3077 + HandleObject holder, HandleShape holderShape);
1.3078 +
1.3079 + public:
1.3080 + static inline ICGetElem_NativePrototypeSlot *New(ICStubSpace *space, JitCode *code,
1.3081 + ICStub *firstMonitorStub,
1.3082 + HandleShape shape, HandlePropertyName name,
1.3083 + AccessType acctype, bool needsAtomize,
1.3084 + uint32_t offset, HandleObject holder,
1.3085 + HandleShape holderShape)
1.3086 + {
1.3087 + if (!code)
1.3088 + return nullptr;
1.3089 + return space->allocate<ICGetElem_NativePrototypeSlot>(
1.3090 + code, firstMonitorStub, shape, name, acctype, needsAtomize, offset, holder,
1.3091 + holderShape);
1.3092 + }
1.3093 +
1.3094 + HeapPtrObject &holder() {
1.3095 + return holder_;
1.3096 + }
1.3097 + static size_t offsetOfHolder() {
1.3098 + return offsetof(ICGetElem_NativePrototypeSlot, holder_);
1.3099 + }
1.3100 +
1.3101 + HeapPtrShape &holderShape() {
1.3102 + return holderShape_;
1.3103 + }
1.3104 + static size_t offsetOfHolderShape() {
1.3105 + return offsetof(ICGetElem_NativePrototypeSlot, holderShape_);
1.3106 + }
1.3107 +};
1.3108 +
1.3109 +class ICGetElemNativePrototypeCallStub : public ICGetElemNativeGetterStub
1.3110 +{
1.3111 + friend class ICStubSpace;
1.3112 + HeapPtrObject holder_;
1.3113 + HeapPtrShape holderShape_;
1.3114 +
1.3115 + protected:
1.3116 + ICGetElemNativePrototypeCallStub(ICStub::Kind kind, JitCode *stubCode, ICStub *firstMonitorStub,
1.3117 + HandleShape shape, HandlePropertyName name,
1.3118 + AccessType acctype, bool needsAtomize, HandleFunction getter,
1.3119 + uint32_t pcOffset, HandleObject holder,
1.3120 + HandleShape holderShape);
1.3121 +
1.3122 + public:
1.3123 + HeapPtrObject &holder() {
1.3124 + return holder_;
1.3125 + }
1.3126 + static size_t offsetOfHolder() {
1.3127 + return offsetof(ICGetElemNativePrototypeCallStub, holder_);
1.3128 + }
1.3129 +
1.3130 + HeapPtrShape &holderShape() {
1.3131 + return holderShape_;
1.3132 + }
1.3133 + static size_t offsetOfHolderShape() {
1.3134 + return offsetof(ICGetElemNativePrototypeCallStub, holderShape_);
1.3135 + }
1.3136 +};
1.3137 +
1.3138 +class ICGetElem_NativePrototypeCallNative : public ICGetElemNativePrototypeCallStub
1.3139 +{
1.3140 + friend class ICStubSpace;
1.3141 +
1.3142 + ICGetElem_NativePrototypeCallNative(JitCode *stubCode, ICStub *firstMonitorStub,
1.3143 + HandleShape shape, HandlePropertyName name,
1.3144 + AccessType acctype, bool needsAtomize,
1.3145 + HandleFunction getter, uint32_t pcOffset,
1.3146 + HandleObject holder, HandleShape holderShape)
1.3147 + : ICGetElemNativePrototypeCallStub(GetElem_NativePrototypeCallNative,
1.3148 + stubCode, firstMonitorStub, shape, name,
1.3149 + acctype, needsAtomize, getter, pcOffset, holder,
1.3150 + holderShape)
1.3151 + {}
1.3152 +
1.3153 + public:
1.3154 + static inline ICGetElem_NativePrototypeCallNative *New(
1.3155 + ICStubSpace *space, JitCode *code, ICStub *firstMonitorStub,
1.3156 + HandleShape shape, HandlePropertyName name, AccessType acctype,
1.3157 + bool needsAtomize, HandleFunction getter, uint32_t pcOffset,
1.3158 + HandleObject holder, HandleShape holderShape)
1.3159 + {
1.3160 + if (!code)
1.3161 + return nullptr;
1.3162 + return space->allocate<ICGetElem_NativePrototypeCallNative>(
1.3163 + code, firstMonitorStub, shape, name, acctype, needsAtomize, getter,
1.3164 + pcOffset, holder, holderShape);
1.3165 + }
1.3166 +};
1.3167 +
1.3168 +class ICGetElem_NativePrototypeCallScripted : public ICGetElemNativePrototypeCallStub
1.3169 +{
1.3170 + friend class ICStubSpace;
1.3171 +
1.3172 + ICGetElem_NativePrototypeCallScripted(JitCode *stubCode, ICStub *firstMonitorStub,
1.3173 + HandleShape shape, HandlePropertyName name,
1.3174 + AccessType acctype, bool needsAtomize,
1.3175 + HandleFunction getter, uint32_t pcOffset,
1.3176 + HandleObject holder, HandleShape holderShape)
1.3177 + : ICGetElemNativePrototypeCallStub(GetElem_NativePrototypeCallScripted,
1.3178 + stubCode, firstMonitorStub, shape, name,
1.3179 + acctype, needsAtomize, getter, pcOffset, holder,
1.3180 + holderShape)
1.3181 + {}
1.3182 +
1.3183 + public:
1.3184 + static inline ICGetElem_NativePrototypeCallScripted *New(
1.3185 + ICStubSpace *space, JitCode *code, ICStub *firstMonitorStub,
1.3186 + HandleShape shape, HandlePropertyName name, AccessType acctype,
1.3187 + bool needsAtomize, HandleFunction getter, uint32_t pcOffset,
1.3188 + HandleObject holder, HandleShape holderShape)
1.3189 + {
1.3190 + if (!code)
1.3191 + return nullptr;
1.3192 + return space->allocate<ICGetElem_NativePrototypeCallScripted>(
1.3193 + code, firstMonitorStub, shape, name, acctype, needsAtomize, getter,
1.3194 + pcOffset, holder, holderShape);
1.3195 + }
1.3196 +};
1.3197 +
1.3198 +// Compiler for GetElem_NativeSlot and GetElem_NativePrototypeSlot stubs.
1.3199 +class ICGetElemNativeCompiler : public ICStubCompiler
1.3200 +{
1.3201 + bool isCallElem_;
1.3202 + ICStub *firstMonitorStub_;
1.3203 + HandleObject obj_;
1.3204 + HandleObject holder_;
1.3205 + HandlePropertyName name_;
1.3206 + ICGetElemNativeStub::AccessType acctype_;
1.3207 + bool needsAtomize_;
1.3208 + uint32_t offset_;
1.3209 + HandleFunction getter_;
1.3210 + uint32_t pcOffset_;
1.3211 +
1.3212 + bool emitCallNative(MacroAssembler &masm, Register objReg);
1.3213 + bool emitCallScripted(MacroAssembler &masm, Register objReg);
1.3214 + bool generateStubCode(MacroAssembler &masm);
1.3215 +
1.3216 + protected:
1.3217 + virtual int32_t getKey() const {
1.3218 +#if JS_HAS_NO_SUCH_METHOD
1.3219 + return static_cast<int32_t>(kind) |
1.3220 + (static_cast<int32_t>(isCallElem_) << 16) |
1.3221 + (static_cast<int32_t>(needsAtomize_) << 17) |
1.3222 + (static_cast<int32_t>(acctype_) << 18);
1.3223 +#else
1.3224 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(needsAtomize_) << 16) |
1.3225 + (static_cast<int32_t>(acctype_) << 17);
1.3226 +#endif
1.3227 + }
1.3228 +
1.3229 + public:
1.3230 + ICGetElemNativeCompiler(JSContext *cx, ICStub::Kind kind, bool isCallElem,
1.3231 + ICStub *firstMonitorStub, HandleObject obj, HandleObject holder,
1.3232 + HandlePropertyName name, ICGetElemNativeStub::AccessType acctype,
1.3233 + bool needsAtomize, uint32_t offset)
1.3234 + : ICStubCompiler(cx, kind),
1.3235 + isCallElem_(isCallElem),
1.3236 + firstMonitorStub_(firstMonitorStub),
1.3237 + obj_(obj),
1.3238 + holder_(holder),
1.3239 + name_(name),
1.3240 + acctype_(acctype),
1.3241 + needsAtomize_(needsAtomize),
1.3242 + offset_(offset),
1.3243 + getter_(js::NullPtr()),
1.3244 + pcOffset_(0)
1.3245 + {}
1.3246 +
1.3247 + ICGetElemNativeCompiler(JSContext *cx, ICStub::Kind kind, ICStub *firstMonitorStub,
1.3248 + HandleObject obj, HandleObject holder, HandlePropertyName name,
1.3249 + ICGetElemNativeStub::AccessType acctype, bool needsAtomize,
1.3250 + HandleFunction getter, uint32_t pcOffset, bool isCallElem)
1.3251 + : ICStubCompiler(cx, kind),
1.3252 + isCallElem_(false),
1.3253 + firstMonitorStub_(firstMonitorStub),
1.3254 + obj_(obj),
1.3255 + holder_(holder),
1.3256 + name_(name),
1.3257 + acctype_(acctype),
1.3258 + needsAtomize_(needsAtomize),
1.3259 + offset_(0),
1.3260 + getter_(getter),
1.3261 + pcOffset_(pcOffset)
1.3262 + {}
1.3263 +
1.3264 + ICStub *getStub(ICStubSpace *space) {
1.3265 + RootedShape shape(cx, obj_->lastProperty());
1.3266 + if (kind == ICStub::GetElem_NativeSlot) {
1.3267 + JS_ASSERT(obj_ == holder_);
1.3268 + return ICGetElem_NativeSlot::New(
1.3269 + space, getStubCode(), firstMonitorStub_, shape, name_, acctype_, needsAtomize_,
1.3270 + offset_);
1.3271 + }
1.3272 +
1.3273 + JS_ASSERT(obj_ != holder_);
1.3274 + RootedShape holderShape(cx, holder_->lastProperty());
1.3275 + if (kind == ICStub::GetElem_NativePrototypeSlot) {
1.3276 + return ICGetElem_NativePrototypeSlot::New(
1.3277 + space, getStubCode(), firstMonitorStub_, shape, name_, acctype_, needsAtomize_,
1.3278 + offset_, holder_, holderShape);
1.3279 + }
1.3280 +
1.3281 + if (kind == ICStub::GetElem_NativePrototypeCallNative) {
1.3282 + return ICGetElem_NativePrototypeCallNative::New(
1.3283 + space, getStubCode(), firstMonitorStub_, shape, name_, acctype_, needsAtomize_,
1.3284 + getter_, pcOffset_, holder_, holderShape);
1.3285 + }
1.3286 +
1.3287 + JS_ASSERT(kind == ICStub::GetElem_NativePrototypeCallScripted);
1.3288 + if (kind == ICStub::GetElem_NativePrototypeCallScripted) {
1.3289 + return ICGetElem_NativePrototypeCallScripted::New(
1.3290 + space, getStubCode(), firstMonitorStub_, shape, name_, acctype_, needsAtomize_,
1.3291 + getter_, pcOffset_, holder_, holderShape);
1.3292 + }
1.3293 +
1.3294 + MOZ_ASSUME_UNREACHABLE("Invalid kind.");
1.3295 + return nullptr;
1.3296 + }
1.3297 +};
1.3298 +
1.3299 +class ICGetElem_String : public ICStub
1.3300 +{
1.3301 + friend class ICStubSpace;
1.3302 +
1.3303 + ICGetElem_String(JitCode *stubCode)
1.3304 + : ICStub(ICStub::GetElem_String, stubCode) {}
1.3305 +
1.3306 + public:
1.3307 + static inline ICGetElem_String *New(ICStubSpace *space, JitCode *code) {
1.3308 + if (!code)
1.3309 + return nullptr;
1.3310 + return space->allocate<ICGetElem_String>(code);
1.3311 + }
1.3312 +
1.3313 + // Compiler for this stub kind.
1.3314 + class Compiler : public ICStubCompiler {
1.3315 + protected:
1.3316 + bool generateStubCode(MacroAssembler &masm);
1.3317 +
1.3318 + public:
1.3319 + Compiler(JSContext *cx)
1.3320 + : ICStubCompiler(cx, ICStub::GetElem_String) {}
1.3321 +
1.3322 + ICStub *getStub(ICStubSpace *space) {
1.3323 + return ICGetElem_String::New(space, getStubCode());
1.3324 + }
1.3325 + };
1.3326 +};
1.3327 +
1.3328 +class ICGetElem_Dense : public ICMonitoredStub
1.3329 +{
1.3330 + friend class ICStubSpace;
1.3331 +
1.3332 + HeapPtrShape shape_;
1.3333 +
1.3334 + ICGetElem_Dense(JitCode *stubCode, ICStub *firstMonitorStub, HandleShape shape);
1.3335 +
1.3336 + public:
1.3337 + static inline ICGetElem_Dense *New(ICStubSpace *space, JitCode *code,
1.3338 + ICStub *firstMonitorStub, HandleShape shape)
1.3339 + {
1.3340 + if (!code)
1.3341 + return nullptr;
1.3342 + return space->allocate<ICGetElem_Dense>(code, firstMonitorStub, shape);
1.3343 + }
1.3344 +
1.3345 + static size_t offsetOfShape() {
1.3346 + return offsetof(ICGetElem_Dense, shape_);
1.3347 + }
1.3348 +
1.3349 + HeapPtrShape &shape() {
1.3350 + return shape_;
1.3351 + }
1.3352 +
1.3353 + class Compiler : public ICStubCompiler {
1.3354 + ICStub *firstMonitorStub_;
1.3355 + RootedShape shape_;
1.3356 + bool isCallElem_;
1.3357 +
1.3358 + protected:
1.3359 + bool generateStubCode(MacroAssembler &masm);
1.3360 +
1.3361 + virtual int32_t getKey() const {
1.3362 +#if JS_HAS_NO_SUCH_METHOD
1.3363 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(isCallElem_) << 16);
1.3364 +#else
1.3365 + return static_cast<int32_t>(kind);
1.3366 +#endif
1.3367 + }
1.3368 +
1.3369 + public:
1.3370 + Compiler(JSContext *cx, ICStub *firstMonitorStub, Shape *shape, bool isCallElem)
1.3371 + : ICStubCompiler(cx, ICStub::GetElem_Dense),
1.3372 + firstMonitorStub_(firstMonitorStub),
1.3373 + shape_(cx, shape),
1.3374 + isCallElem_(isCallElem)
1.3375 + {}
1.3376 +
1.3377 + ICStub *getStub(ICStubSpace *space) {
1.3378 + return ICGetElem_Dense::New(space, getStubCode(), firstMonitorStub_, shape_);
1.3379 + }
1.3380 + };
1.3381 +};
1.3382 +
1.3383 +class ICGetElem_TypedArray : public ICStub
1.3384 +{
1.3385 + friend class ICStubSpace;
1.3386 +
1.3387 + protected: // Protected to silence Clang warning.
1.3388 + HeapPtrShape shape_;
1.3389 +
1.3390 + ICGetElem_TypedArray(JitCode *stubCode, HandleShape shape, uint32_t type);
1.3391 +
1.3392 + public:
1.3393 + static inline ICGetElem_TypedArray *New(ICStubSpace *space, JitCode *code,
1.3394 + HandleShape shape, uint32_t type)
1.3395 + {
1.3396 + if (!code)
1.3397 + return nullptr;
1.3398 + return space->allocate<ICGetElem_TypedArray>(code, shape, type);
1.3399 + }
1.3400 +
1.3401 + static size_t offsetOfShape() {
1.3402 + return offsetof(ICGetElem_TypedArray, shape_);
1.3403 + }
1.3404 +
1.3405 + HeapPtrShape &shape() {
1.3406 + return shape_;
1.3407 + }
1.3408 +
1.3409 + class Compiler : public ICStubCompiler {
1.3410 + RootedShape shape_;
1.3411 + uint32_t type_;
1.3412 +
1.3413 + protected:
1.3414 + bool generateStubCode(MacroAssembler &masm);
1.3415 +
1.3416 + virtual int32_t getKey() const {
1.3417 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(type_) << 16);
1.3418 + }
1.3419 +
1.3420 + public:
1.3421 + Compiler(JSContext *cx, Shape *shape, uint32_t type)
1.3422 + : ICStubCompiler(cx, ICStub::GetElem_TypedArray),
1.3423 + shape_(cx, shape),
1.3424 + type_(type)
1.3425 + {}
1.3426 +
1.3427 + ICStub *getStub(ICStubSpace *space) {
1.3428 + return ICGetElem_TypedArray::New(space, getStubCode(), shape_, type_);
1.3429 + }
1.3430 + };
1.3431 +};
1.3432 +
1.3433 +class ICGetElem_Arguments : public ICMonitoredStub
1.3434 +{
1.3435 + friend class ICStubSpace;
1.3436 + public:
1.3437 + enum Which { Normal, Strict, Magic };
1.3438 +
1.3439 + private:
1.3440 + ICGetElem_Arguments(JitCode *stubCode, ICStub *firstMonitorStub, Which which)
1.3441 + : ICMonitoredStub(ICStub::GetElem_Arguments, stubCode, firstMonitorStub)
1.3442 + {
1.3443 + extra_ = static_cast<uint16_t>(which);
1.3444 + }
1.3445 +
1.3446 + public:
1.3447 + static inline ICGetElem_Arguments *New(ICStubSpace *space, JitCode *code,
1.3448 + ICStub *firstMonitorStub, Which which)
1.3449 + {
1.3450 + if (!code)
1.3451 + return nullptr;
1.3452 + return space->allocate<ICGetElem_Arguments>(code, firstMonitorStub, which);
1.3453 + }
1.3454 +
1.3455 + Which which() const {
1.3456 + return static_cast<Which>(extra_);
1.3457 + }
1.3458 +
1.3459 + class Compiler : public ICStubCompiler {
1.3460 + ICStub *firstMonitorStub_;
1.3461 + Which which_;
1.3462 + bool isCallElem_;
1.3463 +
1.3464 + protected:
1.3465 + bool generateStubCode(MacroAssembler &masm);
1.3466 +
1.3467 + virtual int32_t getKey() const {
1.3468 +#if JS_HAS_NO_SUCH_METHOD
1.3469 + return static_cast<int32_t>(kind) |
1.3470 + static_cast<int32_t>(isCallElem_ << 16) |
1.3471 + (static_cast<int32_t>(which_) << 17);
1.3472 +#else
1.3473 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(which_) << 16);
1.3474 +#endif
1.3475 + }
1.3476 +
1.3477 + public:
1.3478 + Compiler(JSContext *cx, ICStub *firstMonitorStub, Which which, bool isCallElem)
1.3479 + : ICStubCompiler(cx, ICStub::GetElem_Arguments),
1.3480 + firstMonitorStub_(firstMonitorStub),
1.3481 + which_(which),
1.3482 + isCallElem_(isCallElem)
1.3483 + {}
1.3484 +
1.3485 + ICStub *getStub(ICStubSpace *space) {
1.3486 + return ICGetElem_Arguments::New(space, getStubCode(), firstMonitorStub_, which_);
1.3487 + }
1.3488 + };
1.3489 +};
1.3490 +
1.3491 +// SetElem
1.3492 +// JSOP_SETELEM
1.3493 +// JSOP_INITELEM
1.3494 +
1.3495 +class ICSetElem_Fallback : public ICFallbackStub
1.3496 +{
1.3497 + friend class ICStubSpace;
1.3498 +
1.3499 + ICSetElem_Fallback(JitCode *stubCode)
1.3500 + : ICFallbackStub(ICStub::SetElem_Fallback, stubCode)
1.3501 + { }
1.3502 +
1.3503 + public:
1.3504 + static const uint32_t MAX_OPTIMIZED_STUBS = 8;
1.3505 +
1.3506 + static inline ICSetElem_Fallback *New(ICStubSpace *space, JitCode *code) {
1.3507 + if (!code)
1.3508 + return nullptr;
1.3509 + return space->allocate<ICSetElem_Fallback>(code);
1.3510 + }
1.3511 +
1.3512 + void noteArrayWriteHole() {
1.3513 + extra_ = 1;
1.3514 + }
1.3515 + bool hasArrayWriteHole() const {
1.3516 + return extra_;
1.3517 + }
1.3518 +
1.3519 + // Compiler for this stub kind.
1.3520 + class Compiler : public ICStubCompiler {
1.3521 + protected:
1.3522 + bool generateStubCode(MacroAssembler &masm);
1.3523 +
1.3524 + public:
1.3525 + Compiler(JSContext *cx)
1.3526 + : ICStubCompiler(cx, ICStub::SetElem_Fallback)
1.3527 + { }
1.3528 +
1.3529 + ICStub *getStub(ICStubSpace *space) {
1.3530 + return ICSetElem_Fallback::New(space, getStubCode());
1.3531 + }
1.3532 + };
1.3533 +};
1.3534 +
1.3535 +class ICSetElem_Dense : public ICUpdatedStub
1.3536 +{
1.3537 + friend class ICStubSpace;
1.3538 +
1.3539 + HeapPtrShape shape_;
1.3540 + HeapPtrTypeObject type_;
1.3541 +
1.3542 + ICSetElem_Dense(JitCode *stubCode, HandleShape shape, HandleTypeObject type);
1.3543 +
1.3544 + public:
1.3545 + static inline ICSetElem_Dense *New(ICStubSpace *space, JitCode *code, HandleShape shape,
1.3546 + HandleTypeObject type) {
1.3547 + if (!code)
1.3548 + return nullptr;
1.3549 + return space->allocate<ICSetElem_Dense>(code, shape, type);
1.3550 + }
1.3551 +
1.3552 + static size_t offsetOfShape() {
1.3553 + return offsetof(ICSetElem_Dense, shape_);
1.3554 + }
1.3555 + static size_t offsetOfType() {
1.3556 + return offsetof(ICSetElem_Dense, type_);
1.3557 + }
1.3558 +
1.3559 + HeapPtrShape &shape() {
1.3560 + return shape_;
1.3561 + }
1.3562 + HeapPtrTypeObject &type() {
1.3563 + return type_;
1.3564 + }
1.3565 +
1.3566 + class Compiler : public ICStubCompiler {
1.3567 + RootedShape shape_;
1.3568 +
1.3569 + // Compiler is only live on stack during compilation, it should
1.3570 + // outlive any RootedTypeObject it's passed. So it can just
1.3571 + // use the handle.
1.3572 + HandleTypeObject type_;
1.3573 +
1.3574 + bool generateStubCode(MacroAssembler &masm);
1.3575 +
1.3576 + public:
1.3577 + Compiler(JSContext *cx, Shape *shape, HandleTypeObject type)
1.3578 + : ICStubCompiler(cx, ICStub::SetElem_Dense),
1.3579 + shape_(cx, shape),
1.3580 + type_(type)
1.3581 + {}
1.3582 +
1.3583 + ICUpdatedStub *getStub(ICStubSpace *space) {
1.3584 + ICSetElem_Dense *stub = ICSetElem_Dense::New(space, getStubCode(), shape_, type_);
1.3585 + if (!stub || !stub->initUpdatingChain(cx, space))
1.3586 + return nullptr;
1.3587 + return stub;
1.3588 + }
1.3589 + };
1.3590 +};
1.3591 +
1.3592 +template <size_t ProtoChainDepth> class ICSetElem_DenseAddImpl;
1.3593 +
1.3594 +class ICSetElem_DenseAdd : public ICUpdatedStub
1.3595 +{
1.3596 + friend class ICStubSpace;
1.3597 +
1.3598 + public:
1.3599 + static const size_t MAX_PROTO_CHAIN_DEPTH = 4;
1.3600 +
1.3601 + protected:
1.3602 + HeapPtrTypeObject type_;
1.3603 +
1.3604 + ICSetElem_DenseAdd(JitCode *stubCode, types::TypeObject *type, size_t protoChainDepth);
1.3605 +
1.3606 + public:
1.3607 + static size_t offsetOfType() {
1.3608 + return offsetof(ICSetElem_DenseAdd, type_);
1.3609 + }
1.3610 +
1.3611 + HeapPtrTypeObject &type() {
1.3612 + return type_;
1.3613 + }
1.3614 + size_t protoChainDepth() const {
1.3615 + MOZ_ASSERT(extra_ <= MAX_PROTO_CHAIN_DEPTH);
1.3616 + return extra_;
1.3617 + }
1.3618 +
1.3619 + template <size_t ProtoChainDepth>
1.3620 + ICSetElem_DenseAddImpl<ProtoChainDepth> *toImplUnchecked() {
1.3621 + return static_cast<ICSetElem_DenseAddImpl<ProtoChainDepth> *>(this);
1.3622 + }
1.3623 +
1.3624 + template <size_t ProtoChainDepth>
1.3625 + ICSetElem_DenseAddImpl<ProtoChainDepth> *toImpl() {
1.3626 + JS_ASSERT(ProtoChainDepth == protoChainDepth());
1.3627 + return toImplUnchecked<ProtoChainDepth>();
1.3628 + }
1.3629 +};
1.3630 +
1.3631 +template <size_t ProtoChainDepth>
1.3632 +class ICSetElem_DenseAddImpl : public ICSetElem_DenseAdd
1.3633 +{
1.3634 + friend class ICStubSpace;
1.3635 +
1.3636 + static const size_t NumShapes = ProtoChainDepth + 1;
1.3637 + mozilla::Array<HeapPtrShape, NumShapes> shapes_;
1.3638 +
1.3639 + ICSetElem_DenseAddImpl(JitCode *stubCode, types::TypeObject *type,
1.3640 + const AutoShapeVector *shapes)
1.3641 + : ICSetElem_DenseAdd(stubCode, type, ProtoChainDepth)
1.3642 + {
1.3643 + JS_ASSERT(shapes->length() == NumShapes);
1.3644 + for (size_t i = 0; i < NumShapes; i++)
1.3645 + shapes_[i].init((*shapes)[i]);
1.3646 + }
1.3647 +
1.3648 + public:
1.3649 + static inline ICSetElem_DenseAddImpl *New(ICStubSpace *space, JitCode *code,
1.3650 + types::TypeObject *type,
1.3651 + const AutoShapeVector *shapes)
1.3652 + {
1.3653 + if (!code)
1.3654 + return nullptr;
1.3655 + return space->allocate<ICSetElem_DenseAddImpl<ProtoChainDepth> >(code, type, shapes);
1.3656 + }
1.3657 +
1.3658 + void traceShapes(JSTracer *trc) {
1.3659 + for (size_t i = 0; i < NumShapes; i++)
1.3660 + MarkShape(trc, &shapes_[i], "baseline-setelem-denseadd-stub-shape");
1.3661 + }
1.3662 + Shape *shape(size_t i) const {
1.3663 + JS_ASSERT(i < NumShapes);
1.3664 + return shapes_[i];
1.3665 + }
1.3666 + static size_t offsetOfShape(size_t idx) {
1.3667 + return offsetof(ICSetElem_DenseAddImpl, shapes_) + idx * sizeof(HeapPtrShape);
1.3668 + }
1.3669 +};
1.3670 +
1.3671 +class ICSetElemDenseAddCompiler : public ICStubCompiler {
1.3672 + RootedObject obj_;
1.3673 + size_t protoChainDepth_;
1.3674 +
1.3675 + bool generateStubCode(MacroAssembler &masm);
1.3676 +
1.3677 + protected:
1.3678 + virtual int32_t getKey() const {
1.3679 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(protoChainDepth_) << 16);
1.3680 + }
1.3681 +
1.3682 + public:
1.3683 + ICSetElemDenseAddCompiler(JSContext *cx, HandleObject obj, size_t protoChainDepth)
1.3684 + : ICStubCompiler(cx, ICStub::SetElem_DenseAdd),
1.3685 + obj_(cx, obj),
1.3686 + protoChainDepth_(protoChainDepth)
1.3687 + {}
1.3688 +
1.3689 + template <size_t ProtoChainDepth>
1.3690 + ICUpdatedStub *getStubSpecific(ICStubSpace *space, const AutoShapeVector *shapes);
1.3691 +
1.3692 + ICUpdatedStub *getStub(ICStubSpace *space);
1.3693 +};
1.3694 +
1.3695 +class ICSetElem_TypedArray : public ICStub
1.3696 +{
1.3697 + friend class ICStubSpace;
1.3698 +
1.3699 + protected: // Protected to silence Clang warning.
1.3700 + HeapPtrShape shape_;
1.3701 +
1.3702 + ICSetElem_TypedArray(JitCode *stubCode, HandleShape shape, uint32_t type,
1.3703 + bool expectOutOfBounds);
1.3704 +
1.3705 + public:
1.3706 + static inline ICSetElem_TypedArray *New(ICStubSpace *space, JitCode *code,
1.3707 + HandleShape shape, uint32_t type,
1.3708 + bool expectOutOfBounds)
1.3709 + {
1.3710 + if (!code)
1.3711 + return nullptr;
1.3712 + return space->allocate<ICSetElem_TypedArray>(code, shape, type, expectOutOfBounds);
1.3713 + }
1.3714 +
1.3715 + uint32_t type() const {
1.3716 + return extra_ & 0xff;
1.3717 + }
1.3718 +
1.3719 + bool expectOutOfBounds() const {
1.3720 + return (extra_ >> 8) & 1;
1.3721 + }
1.3722 +
1.3723 + static size_t offsetOfShape() {
1.3724 + return offsetof(ICSetElem_TypedArray, shape_);
1.3725 + }
1.3726 +
1.3727 + HeapPtrShape &shape() {
1.3728 + return shape_;
1.3729 + }
1.3730 +
1.3731 + class Compiler : public ICStubCompiler {
1.3732 + RootedShape shape_;
1.3733 + uint32_t type_;
1.3734 + bool expectOutOfBounds_;
1.3735 +
1.3736 + protected:
1.3737 + bool generateStubCode(MacroAssembler &masm);
1.3738 +
1.3739 + virtual int32_t getKey() const {
1.3740 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(type_) << 16) |
1.3741 + (static_cast<int32_t>(expectOutOfBounds_) << 24);
1.3742 + }
1.3743 +
1.3744 + public:
1.3745 + Compiler(JSContext *cx, Shape *shape, uint32_t type, bool expectOutOfBounds)
1.3746 + : ICStubCompiler(cx, ICStub::SetElem_TypedArray),
1.3747 + shape_(cx, shape),
1.3748 + type_(type),
1.3749 + expectOutOfBounds_(expectOutOfBounds)
1.3750 + {}
1.3751 +
1.3752 + ICStub *getStub(ICStubSpace *space) {
1.3753 + return ICSetElem_TypedArray::New(space, getStubCode(), shape_, type_,
1.3754 + expectOutOfBounds_);
1.3755 + }
1.3756 + };
1.3757 +};
1.3758 +
1.3759 +// In
1.3760 +// JSOP_IN
1.3761 +class ICIn_Fallback : public ICFallbackStub
1.3762 +{
1.3763 + friend class ICStubSpace;
1.3764 +
1.3765 + ICIn_Fallback(JitCode *stubCode)
1.3766 + : ICFallbackStub(ICStub::In_Fallback, stubCode)
1.3767 + { }
1.3768 +
1.3769 + public:
1.3770 + static inline ICIn_Fallback *New(ICStubSpace *space, JitCode *code) {
1.3771 + if (!code)
1.3772 + return nullptr;
1.3773 + return space->allocate<ICIn_Fallback>(code);
1.3774 + }
1.3775 +
1.3776 + class Compiler : public ICStubCompiler {
1.3777 + protected:
1.3778 + bool generateStubCode(MacroAssembler &masm);
1.3779 +
1.3780 + public:
1.3781 + Compiler(JSContext *cx)
1.3782 + : ICStubCompiler(cx, ICStub::In_Fallback)
1.3783 + { }
1.3784 +
1.3785 + ICStub *getStub(ICStubSpace *space) {
1.3786 + return ICIn_Fallback::New(space, getStubCode());
1.3787 + }
1.3788 + };
1.3789 +};
1.3790 +
1.3791 +// GetName
1.3792 +// JSOP_NAME
1.3793 +// JSOP_GETGNAME
1.3794 +class ICGetName_Fallback : public ICMonitoredFallbackStub
1.3795 +{
1.3796 + friend class ICStubSpace;
1.3797 +
1.3798 + ICGetName_Fallback(JitCode *stubCode)
1.3799 + : ICMonitoredFallbackStub(ICStub::GetName_Fallback, stubCode)
1.3800 + { }
1.3801 +
1.3802 + public:
1.3803 + static const uint32_t MAX_OPTIMIZED_STUBS = 8;
1.3804 +
1.3805 + static inline ICGetName_Fallback *New(ICStubSpace *space, JitCode *code) {
1.3806 + if (!code)
1.3807 + return nullptr;
1.3808 + return space->allocate<ICGetName_Fallback>(code);
1.3809 + }
1.3810 +
1.3811 + class Compiler : public ICStubCompiler {
1.3812 + protected:
1.3813 + bool generateStubCode(MacroAssembler &masm);
1.3814 +
1.3815 + public:
1.3816 + Compiler(JSContext *cx)
1.3817 + : ICStubCompiler(cx, ICStub::GetName_Fallback)
1.3818 + { }
1.3819 +
1.3820 + ICStub *getStub(ICStubSpace *space) {
1.3821 + ICGetName_Fallback *stub = ICGetName_Fallback::New(space, getStubCode());
1.3822 + if (!stub || !stub->initMonitoringChain(cx, space))
1.3823 + return nullptr;
1.3824 + return stub;
1.3825 + }
1.3826 + };
1.3827 +};
1.3828 +
1.3829 +// Optimized GETGNAME/CALLGNAME stub.
1.3830 +class ICGetName_Global : public ICMonitoredStub
1.3831 +{
1.3832 + friend class ICStubSpace;
1.3833 +
1.3834 + protected: // Protected to silence Clang warning.
1.3835 + HeapPtrShape shape_;
1.3836 + uint32_t slot_;
1.3837 +
1.3838 + ICGetName_Global(JitCode *stubCode, ICStub *firstMonitorStub, HandleShape shape, uint32_t slot);
1.3839 +
1.3840 + public:
1.3841 + static inline ICGetName_Global *New(ICStubSpace *space, JitCode *code, ICStub *firstMonitorStub,
1.3842 + HandleShape shape, uint32_t slot)
1.3843 + {
1.3844 + if (!code)
1.3845 + return nullptr;
1.3846 + return space->allocate<ICGetName_Global>(code, firstMonitorStub, shape, slot);
1.3847 + }
1.3848 +
1.3849 + HeapPtrShape &shape() {
1.3850 + return shape_;
1.3851 + }
1.3852 + static size_t offsetOfShape() {
1.3853 + return offsetof(ICGetName_Global, shape_);
1.3854 + }
1.3855 + static size_t offsetOfSlot() {
1.3856 + return offsetof(ICGetName_Global, slot_);
1.3857 + }
1.3858 +
1.3859 + class Compiler : public ICStubCompiler {
1.3860 + ICStub *firstMonitorStub_;
1.3861 + RootedShape shape_;
1.3862 + uint32_t slot_;
1.3863 +
1.3864 + protected:
1.3865 + bool generateStubCode(MacroAssembler &masm);
1.3866 +
1.3867 + public:
1.3868 + Compiler(JSContext *cx, ICStub *firstMonitorStub, Shape *shape, uint32_t slot)
1.3869 + : ICStubCompiler(cx, ICStub::GetName_Global),
1.3870 + firstMonitorStub_(firstMonitorStub),
1.3871 + shape_(cx, shape),
1.3872 + slot_(slot)
1.3873 + {}
1.3874 +
1.3875 + ICStub *getStub(ICStubSpace *space) {
1.3876 + return ICGetName_Global::New(space, getStubCode(), firstMonitorStub_, shape_, slot_);
1.3877 + }
1.3878 + };
1.3879 +};
1.3880 +
1.3881 +// Optimized GETNAME/CALLNAME stub, making a variable number of hops to get an
1.3882 +// 'own' property off some scope object. Unlike GETPROP on an object's
1.3883 +// prototype, there is no teleporting optimization to take advantage of and
1.3884 +// shape checks are required all along the scope chain.
1.3885 +template <size_t NumHops>
1.3886 +class ICGetName_Scope : public ICMonitoredStub
1.3887 +{
1.3888 + friend class ICStubSpace;
1.3889 +
1.3890 + static const size_t MAX_HOPS = 6;
1.3891 +
1.3892 + mozilla::Array<HeapPtrShape, NumHops + 1> shapes_;
1.3893 + uint32_t offset_;
1.3894 +
1.3895 + ICGetName_Scope(JitCode *stubCode, ICStub *firstMonitorStub,
1.3896 + AutoShapeVector *shapes, uint32_t offset);
1.3897 +
1.3898 + static Kind GetStubKind() {
1.3899 + return (Kind) (GetName_Scope0 + NumHops);
1.3900 + }
1.3901 +
1.3902 + public:
1.3903 + static inline ICGetName_Scope *New(ICStubSpace *space, JitCode *code, ICStub *firstMonitorStub,
1.3904 + AutoShapeVector *shapes, uint32_t offset)
1.3905 + {
1.3906 + if (!code)
1.3907 + return nullptr;
1.3908 + return space->allocate<ICGetName_Scope<NumHops> >(code, firstMonitorStub, shapes, offset);
1.3909 + }
1.3910 +
1.3911 + void traceScopes(JSTracer *trc) {
1.3912 + for (size_t i = 0; i < NumHops + 1; i++)
1.3913 + MarkShape(trc, &shapes_[i], "baseline-scope-stub-shape");
1.3914 + }
1.3915 +
1.3916 + static size_t offsetOfShape(size_t index) {
1.3917 + JS_ASSERT(index <= NumHops);
1.3918 + return offsetof(ICGetName_Scope, shapes_) + (index * sizeof(HeapPtrShape));
1.3919 + }
1.3920 + static size_t offsetOfOffset() {
1.3921 + return offsetof(ICGetName_Scope, offset_);
1.3922 + }
1.3923 +
1.3924 + class Compiler : public ICStubCompiler {
1.3925 + ICStub *firstMonitorStub_;
1.3926 + AutoShapeVector *shapes_;
1.3927 + bool isFixedSlot_;
1.3928 + uint32_t offset_;
1.3929 +
1.3930 + protected:
1.3931 + bool generateStubCode(MacroAssembler &masm);
1.3932 +
1.3933 + protected:
1.3934 + virtual int32_t getKey() const {
1.3935 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(isFixedSlot_) << 16);
1.3936 + }
1.3937 +
1.3938 + public:
1.3939 + Compiler(JSContext *cx, ICStub *firstMonitorStub,
1.3940 + AutoShapeVector *shapes, bool isFixedSlot, uint32_t offset)
1.3941 + : ICStubCompiler(cx, GetStubKind()),
1.3942 + firstMonitorStub_(firstMonitorStub),
1.3943 + shapes_(shapes),
1.3944 + isFixedSlot_(isFixedSlot),
1.3945 + offset_(offset)
1.3946 + {
1.3947 + }
1.3948 +
1.3949 + ICStub *getStub(ICStubSpace *space) {
1.3950 + return ICGetName_Scope::New(space, getStubCode(), firstMonitorStub_, shapes_, offset_);
1.3951 + }
1.3952 + };
1.3953 +};
1.3954 +
1.3955 +// BindName
1.3956 +// JSOP_BINDNAME
1.3957 +class ICBindName_Fallback : public ICFallbackStub
1.3958 +{
1.3959 + friend class ICStubSpace;
1.3960 +
1.3961 + ICBindName_Fallback(JitCode *stubCode)
1.3962 + : ICFallbackStub(ICStub::BindName_Fallback, stubCode)
1.3963 + { }
1.3964 +
1.3965 + public:
1.3966 + static inline ICBindName_Fallback *New(ICStubSpace *space, JitCode *code) {
1.3967 + if (!code)
1.3968 + return nullptr;
1.3969 + return space->allocate<ICBindName_Fallback>(code);
1.3970 + }
1.3971 +
1.3972 + class Compiler : public ICStubCompiler {
1.3973 + protected:
1.3974 + bool generateStubCode(MacroAssembler &masm);
1.3975 +
1.3976 + public:
1.3977 + Compiler(JSContext *cx)
1.3978 + : ICStubCompiler(cx, ICStub::BindName_Fallback)
1.3979 + { }
1.3980 +
1.3981 + ICStub *getStub(ICStubSpace *space) {
1.3982 + return ICBindName_Fallback::New(space, getStubCode());
1.3983 + }
1.3984 + };
1.3985 +};
1.3986 +
1.3987 +// GetIntrinsic
1.3988 +// JSOP_GETINTRINSIC
1.3989 +class ICGetIntrinsic_Fallback : public ICMonitoredFallbackStub
1.3990 +{
1.3991 + friend class ICStubSpace;
1.3992 +
1.3993 + ICGetIntrinsic_Fallback(JitCode *stubCode)
1.3994 + : ICMonitoredFallbackStub(ICStub::GetIntrinsic_Fallback, stubCode)
1.3995 + { }
1.3996 +
1.3997 + public:
1.3998 + static inline ICGetIntrinsic_Fallback *New(ICStubSpace *space, JitCode *code) {
1.3999 + if (!code)
1.4000 + return nullptr;
1.4001 + return space->allocate<ICGetIntrinsic_Fallback>(code);
1.4002 + }
1.4003 +
1.4004 + class Compiler : public ICStubCompiler {
1.4005 + protected:
1.4006 + bool generateStubCode(MacroAssembler &masm);
1.4007 +
1.4008 + public:
1.4009 + Compiler(JSContext *cx)
1.4010 + : ICStubCompiler(cx, ICStub::GetIntrinsic_Fallback)
1.4011 + { }
1.4012 +
1.4013 + ICStub *getStub(ICStubSpace *space) {
1.4014 + ICGetIntrinsic_Fallback *stub = ICGetIntrinsic_Fallback::New(space, getStubCode());
1.4015 + if (!stub || !stub->initMonitoringChain(cx, space))
1.4016 + return nullptr;
1.4017 + return stub;
1.4018 + }
1.4019 + };
1.4020 +};
1.4021 +
1.4022 +// Stub that loads the constant result of a GETINTRINSIC operation.
1.4023 +class ICGetIntrinsic_Constant : public ICStub
1.4024 +{
1.4025 + friend class ICStubSpace;
1.4026 +
1.4027 + HeapValue value_;
1.4028 +
1.4029 + ICGetIntrinsic_Constant(JitCode *stubCode, HandleValue value);
1.4030 + ~ICGetIntrinsic_Constant();
1.4031 +
1.4032 + public:
1.4033 + static inline ICGetIntrinsic_Constant *New(ICStubSpace *space, JitCode *code,
1.4034 + HandleValue value)
1.4035 + {
1.4036 + if (!code)
1.4037 + return nullptr;
1.4038 + return space->allocate<ICGetIntrinsic_Constant>(code, value);
1.4039 + }
1.4040 +
1.4041 + HeapValue &value() {
1.4042 + return value_;
1.4043 + }
1.4044 + static size_t offsetOfValue() {
1.4045 + return offsetof(ICGetIntrinsic_Constant, value_);
1.4046 + }
1.4047 +
1.4048 + class Compiler : public ICStubCompiler {
1.4049 + bool generateStubCode(MacroAssembler &masm);
1.4050 +
1.4051 + HandleValue value_;
1.4052 +
1.4053 + public:
1.4054 + Compiler(JSContext *cx, HandleValue value)
1.4055 + : ICStubCompiler(cx, ICStub::GetIntrinsic_Constant),
1.4056 + value_(value)
1.4057 + {}
1.4058 +
1.4059 + ICStub *getStub(ICStubSpace *space) {
1.4060 + return ICGetIntrinsic_Constant::New(space, getStubCode(), value_);
1.4061 + }
1.4062 + };
1.4063 +};
1.4064 +
1.4065 +class ICGetProp_Fallback : public ICMonitoredFallbackStub
1.4066 +{
1.4067 + friend class ICStubSpace;
1.4068 +
1.4069 + ICGetProp_Fallback(JitCode *stubCode)
1.4070 + : ICMonitoredFallbackStub(ICStub::GetProp_Fallback, stubCode)
1.4071 + { }
1.4072 +
1.4073 + public:
1.4074 + static const uint32_t MAX_OPTIMIZED_STUBS = 8;
1.4075 +
1.4076 + static inline ICGetProp_Fallback *New(ICStubSpace *space, JitCode *code) {
1.4077 + if (!code)
1.4078 + return nullptr;
1.4079 + return space->allocate<ICGetProp_Fallback>(code);
1.4080 + }
1.4081 +
1.4082 + static const size_t UNOPTIMIZABLE_ACCESS_BIT = 0;
1.4083 + static const size_t ACCESSED_GETTER_BIT = 1;
1.4084 +
1.4085 + void noteUnoptimizableAccess() {
1.4086 + extra_ |= (1u << UNOPTIMIZABLE_ACCESS_BIT);
1.4087 + }
1.4088 + bool hadUnoptimizableAccess() const {
1.4089 + return extra_ & (1u << UNOPTIMIZABLE_ACCESS_BIT);
1.4090 + }
1.4091 +
1.4092 + void noteAccessedGetter() {
1.4093 + extra_ |= (1u << ACCESSED_GETTER_BIT);
1.4094 + }
1.4095 + bool hasAccessedGetter() const {
1.4096 + return extra_ & (1u << ACCESSED_GETTER_BIT);
1.4097 + }
1.4098 +
1.4099 + class Compiler : public ICStubCompiler {
1.4100 + protected:
1.4101 + uint32_t returnFromIonOffset_;
1.4102 + uint32_t returnFromStubOffset_;
1.4103 + bool generateStubCode(MacroAssembler &masm);
1.4104 + bool postGenerateStubCode(MacroAssembler &masm, Handle<JitCode *> code);
1.4105 +
1.4106 + public:
1.4107 + Compiler(JSContext *cx)
1.4108 + : ICStubCompiler(cx, ICStub::GetProp_Fallback)
1.4109 + { }
1.4110 +
1.4111 + ICStub *getStub(ICStubSpace *space) {
1.4112 + ICGetProp_Fallback *stub = ICGetProp_Fallback::New(space, getStubCode());
1.4113 + if (!stub || !stub->initMonitoringChain(cx, space))
1.4114 + return nullptr;
1.4115 + return stub;
1.4116 + }
1.4117 + };
1.4118 +};
1.4119 +
1.4120 +// Stub for accessing a dense array's length.
1.4121 +class ICGetProp_ArrayLength : public ICStub
1.4122 +{
1.4123 + friend class ICStubSpace;
1.4124 +
1.4125 + ICGetProp_ArrayLength(JitCode *stubCode)
1.4126 + : ICStub(GetProp_ArrayLength, stubCode)
1.4127 + {}
1.4128 +
1.4129 + public:
1.4130 + static inline ICGetProp_ArrayLength *New(ICStubSpace *space, JitCode *code) {
1.4131 + if (!code)
1.4132 + return nullptr;
1.4133 + return space->allocate<ICGetProp_ArrayLength>(code);
1.4134 + }
1.4135 +
1.4136 + class Compiler : public ICStubCompiler {
1.4137 + bool generateStubCode(MacroAssembler &masm);
1.4138 +
1.4139 + public:
1.4140 + Compiler(JSContext *cx)
1.4141 + : ICStubCompiler(cx, ICStub::GetProp_ArrayLength)
1.4142 + {}
1.4143 +
1.4144 + ICStub *getStub(ICStubSpace *space) {
1.4145 + return ICGetProp_ArrayLength::New(space, getStubCode());
1.4146 + }
1.4147 + };
1.4148 +};
1.4149 +
1.4150 +// Stub for accessing a typed array's length.
1.4151 +class ICGetProp_TypedArrayLength : public ICStub
1.4152 +{
1.4153 + friend class ICStubSpace;
1.4154 +
1.4155 + ICGetProp_TypedArrayLength(JitCode *stubCode)
1.4156 + : ICStub(GetProp_TypedArrayLength, stubCode)
1.4157 + {}
1.4158 +
1.4159 + public:
1.4160 + static inline ICGetProp_TypedArrayLength *New(ICStubSpace *space, JitCode *code) {
1.4161 + if (!code)
1.4162 + return nullptr;
1.4163 + return space->allocate<ICGetProp_TypedArrayLength>(code);
1.4164 + }
1.4165 +
1.4166 + class Compiler : public ICStubCompiler {
1.4167 + bool generateStubCode(MacroAssembler &masm);
1.4168 +
1.4169 + public:
1.4170 + Compiler(JSContext *cx)
1.4171 + : ICStubCompiler(cx, ICStub::GetProp_TypedArrayLength)
1.4172 + {}
1.4173 +
1.4174 + ICStub *getStub(ICStubSpace *space) {
1.4175 + return ICGetProp_TypedArrayLength::New(space, getStubCode());
1.4176 + }
1.4177 + };
1.4178 +};
1.4179 +
1.4180 +// Stub for accessing a property on a primitive's prototype.
1.4181 +class ICGetProp_Primitive : public ICMonitoredStub
1.4182 +{
1.4183 + friend class ICStubSpace;
1.4184 +
1.4185 + protected: // Protected to silence Clang warning.
1.4186 + // Shape of String.prototype/Number.prototype to check for.
1.4187 + HeapPtrShape protoShape_;
1.4188 +
1.4189 + // Fixed or dynamic slot offset.
1.4190 + uint32_t offset_;
1.4191 +
1.4192 + ICGetProp_Primitive(JitCode *stubCode, ICStub *firstMonitorStub,
1.4193 + HandleShape protoShape, uint32_t offset);
1.4194 +
1.4195 + public:
1.4196 + static inline ICGetProp_Primitive *New(ICStubSpace *space, JitCode *code, ICStub *firstMonitorStub,
1.4197 + HandleShape protoShape, uint32_t offset)
1.4198 + {
1.4199 + if (!code)
1.4200 + return nullptr;
1.4201 + return space->allocate<ICGetProp_Primitive>(code, firstMonitorStub, protoShape, offset);
1.4202 + }
1.4203 +
1.4204 + HeapPtrShape &protoShape() {
1.4205 + return protoShape_;
1.4206 + }
1.4207 + static size_t offsetOfProtoShape() {
1.4208 + return offsetof(ICGetProp_Primitive, protoShape_);
1.4209 + }
1.4210 +
1.4211 + static size_t offsetOfOffset() {
1.4212 + return offsetof(ICGetProp_Primitive, offset_);
1.4213 + }
1.4214 +
1.4215 + class Compiler : public ICStubCompiler {
1.4216 + ICStub *firstMonitorStub_;
1.4217 + JSValueType primitiveType_;
1.4218 + RootedObject prototype_;
1.4219 + bool isFixedSlot_;
1.4220 + uint32_t offset_;
1.4221 +
1.4222 + bool generateStubCode(MacroAssembler &masm);
1.4223 +
1.4224 + protected:
1.4225 + virtual int32_t getKey() const {
1.4226 + static_assert(sizeof(JSValueType) == 1, "JSValueType should fit in one byte");
1.4227 + return static_cast<int32_t>(kind)
1.4228 + | (static_cast<int32_t>(isFixedSlot_) << 16)
1.4229 + | (static_cast<int32_t>(primitiveType_) << 24);
1.4230 + }
1.4231 +
1.4232 + public:
1.4233 + Compiler(JSContext *cx, ICStub *firstMonitorStub, JSValueType primitiveType,
1.4234 + HandleObject prototype, bool isFixedSlot, uint32_t offset)
1.4235 + : ICStubCompiler(cx, ICStub::GetProp_Primitive),
1.4236 + firstMonitorStub_(firstMonitorStub),
1.4237 + primitiveType_(primitiveType),
1.4238 + prototype_(cx, prototype),
1.4239 + isFixedSlot_(isFixedSlot),
1.4240 + offset_(offset)
1.4241 + {}
1.4242 +
1.4243 + ICStub *getStub(ICStubSpace *space) {
1.4244 + RootedShape protoShape(cx, prototype_->lastProperty());
1.4245 + return ICGetProp_Primitive::New(space, getStubCode(), firstMonitorStub_,
1.4246 + protoShape, offset_);
1.4247 + }
1.4248 + };
1.4249 +};
1.4250 +
1.4251 +// Stub for accessing a string's length.
1.4252 +class ICGetProp_StringLength : public ICStub
1.4253 +{
1.4254 + friend class ICStubSpace;
1.4255 +
1.4256 + ICGetProp_StringLength(JitCode *stubCode)
1.4257 + : ICStub(GetProp_StringLength, stubCode)
1.4258 + {}
1.4259 +
1.4260 + public:
1.4261 + static inline ICGetProp_StringLength *New(ICStubSpace *space, JitCode *code) {
1.4262 + if (!code)
1.4263 + return nullptr;
1.4264 + return space->allocate<ICGetProp_StringLength>(code);
1.4265 + }
1.4266 +
1.4267 + class Compiler : public ICStubCompiler {
1.4268 + bool generateStubCode(MacroAssembler &masm);
1.4269 +
1.4270 + public:
1.4271 + Compiler(JSContext *cx)
1.4272 + : ICStubCompiler(cx, ICStub::GetProp_StringLength)
1.4273 + {}
1.4274 +
1.4275 + ICStub *getStub(ICStubSpace *space) {
1.4276 + return ICGetProp_StringLength::New(space, getStubCode());
1.4277 + }
1.4278 + };
1.4279 +};
1.4280 +
1.4281 +// Base class for GetProp_Native and GetProp_NativePrototype stubs.
1.4282 +class ICGetPropNativeStub : public ICMonitoredStub
1.4283 +{
1.4284 + // Object shape (lastProperty).
1.4285 + HeapPtrShape shape_;
1.4286 +
1.4287 + // Fixed or dynamic slot offset.
1.4288 + uint32_t offset_;
1.4289 +
1.4290 + protected:
1.4291 + ICGetPropNativeStub(ICStub::Kind kind, JitCode *stubCode, ICStub *firstMonitorStub,
1.4292 + HandleShape shape, uint32_t offset);
1.4293 +
1.4294 + public:
1.4295 + HeapPtrShape &shape() {
1.4296 + return shape_;
1.4297 + }
1.4298 + uint32_t offset() const {
1.4299 + return offset_;
1.4300 + }
1.4301 + static size_t offsetOfShape() {
1.4302 + return offsetof(ICGetPropNativeStub, shape_);
1.4303 + }
1.4304 + static size_t offsetOfOffset() {
1.4305 + return offsetof(ICGetPropNativeStub, offset_);
1.4306 + }
1.4307 +};
1.4308 +
1.4309 +// Stub for accessing an own property on a native object.
1.4310 +class ICGetProp_Native : public ICGetPropNativeStub
1.4311 +{
1.4312 + friend class ICStubSpace;
1.4313 +
1.4314 + ICGetProp_Native(JitCode *stubCode, ICStub *firstMonitorStub, HandleShape shape,
1.4315 + uint32_t offset)
1.4316 + : ICGetPropNativeStub(GetProp_Native, stubCode, firstMonitorStub, shape, offset)
1.4317 + {}
1.4318 +
1.4319 + public:
1.4320 + static inline ICGetProp_Native *New(ICStubSpace *space, JitCode *code,
1.4321 + ICStub *firstMonitorStub, HandleShape shape,
1.4322 + uint32_t offset)
1.4323 + {
1.4324 + if (!code)
1.4325 + return nullptr;
1.4326 + return space->allocate<ICGetProp_Native>(code, firstMonitorStub, shape, offset);
1.4327 + }
1.4328 +};
1.4329 +
1.4330 +// Stub for accessing a property on a native object's prototype. Note that due to
1.4331 +// the shape teleporting optimization, we only have to guard on the object's shape
1.4332 +// and the holder's shape.
1.4333 +class ICGetProp_NativePrototype : public ICGetPropNativeStub
1.4334 +{
1.4335 + friend class ICStubSpace;
1.4336 +
1.4337 + protected:
1.4338 + // Holder and its shape.
1.4339 + HeapPtrObject holder_;
1.4340 + HeapPtrShape holderShape_;
1.4341 +
1.4342 + ICGetProp_NativePrototype(JitCode *stubCode, ICStub *firstMonitorStub, HandleShape shape,
1.4343 + uint32_t offset, HandleObject holder, HandleShape holderShape);
1.4344 +
1.4345 + public:
1.4346 + static inline ICGetProp_NativePrototype *New(ICStubSpace *space, JitCode *code,
1.4347 + ICStub *firstMonitorStub, HandleShape shape,
1.4348 + uint32_t offset, HandleObject holder,
1.4349 + HandleShape holderShape)
1.4350 + {
1.4351 + if (!code)
1.4352 + return nullptr;
1.4353 + return space->allocate<ICGetProp_NativePrototype>(code, firstMonitorStub, shape, offset,
1.4354 + holder, holderShape);
1.4355 + }
1.4356 +
1.4357 + public:
1.4358 + HeapPtrObject &holder() {
1.4359 + return holder_;
1.4360 + }
1.4361 + HeapPtrShape &holderShape() {
1.4362 + return holderShape_;
1.4363 + }
1.4364 + static size_t offsetOfHolder() {
1.4365 + return offsetof(ICGetProp_NativePrototype, holder_);
1.4366 + }
1.4367 + static size_t offsetOfHolderShape() {
1.4368 + return offsetof(ICGetProp_NativePrototype, holderShape_);
1.4369 + }
1.4370 +};
1.4371 +
1.4372 +
1.4373 +// Compiler for GetProp_Native and GetProp_NativePrototype stubs.
1.4374 +class ICGetPropNativeCompiler : public ICStubCompiler
1.4375 +{
1.4376 + bool isCallProp_;
1.4377 + ICStub *firstMonitorStub_;
1.4378 + HandleObject obj_;
1.4379 + HandleObject holder_;
1.4380 + HandlePropertyName propName_;
1.4381 + bool isFixedSlot_;
1.4382 + uint32_t offset_;
1.4383 +
1.4384 + bool generateStubCode(MacroAssembler &masm);
1.4385 +
1.4386 + protected:
1.4387 + virtual int32_t getKey() const {
1.4388 +#if JS_HAS_NO_SUCH_METHOD
1.4389 + return static_cast<int32_t>(kind) |
1.4390 + (static_cast<int32_t>(isCallProp_) << 16) |
1.4391 + (static_cast<int32_t>(isFixedSlot_) << 17);
1.4392 +#else
1.4393 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(isFixedSlot_) << 16);
1.4394 +#endif
1.4395 + }
1.4396 +
1.4397 + public:
1.4398 + ICGetPropNativeCompiler(JSContext *cx, ICStub::Kind kind, bool isCallProp,
1.4399 + ICStub *firstMonitorStub, HandleObject obj, HandleObject holder,
1.4400 + HandlePropertyName propName, bool isFixedSlot, uint32_t offset)
1.4401 + : ICStubCompiler(cx, kind),
1.4402 + isCallProp_(isCallProp),
1.4403 + firstMonitorStub_(firstMonitorStub),
1.4404 + obj_(obj),
1.4405 + holder_(holder),
1.4406 + propName_(propName),
1.4407 + isFixedSlot_(isFixedSlot),
1.4408 + offset_(offset)
1.4409 + {}
1.4410 +
1.4411 + ICStub *getStub(ICStubSpace *space) {
1.4412 + RootedShape shape(cx, obj_->lastProperty());
1.4413 + if (kind == ICStub::GetProp_Native) {
1.4414 + JS_ASSERT(obj_ == holder_);
1.4415 + return ICGetProp_Native::New(space, getStubCode(), firstMonitorStub_, shape, offset_);
1.4416 + }
1.4417 +
1.4418 + JS_ASSERT(obj_ != holder_);
1.4419 + JS_ASSERT(kind == ICStub::GetProp_NativePrototype);
1.4420 + RootedShape holderShape(cx, holder_->lastProperty());
1.4421 + return ICGetProp_NativePrototype::New(space, getStubCode(), firstMonitorStub_, shape,
1.4422 + offset_, holder_, holderShape);
1.4423 + }
1.4424 +};
1.4425 +
1.4426 +class ICGetPropCallGetter : public ICMonitoredStub
1.4427 +{
1.4428 + friend class ICStubSpace;
1.4429 +
1.4430 + protected:
1.4431 + // We don't strictly need this for own property getters, but we need it to do
1.4432 + // Ion optimizations, so we should keep it around.
1.4433 + HeapPtrObject holder_;
1.4434 +
1.4435 + HeapPtrShape holderShape_;
1.4436 +
1.4437 + // Function to call.
1.4438 + HeapPtrFunction getter_;
1.4439 +
1.4440 + // PC offset of call
1.4441 + uint32_t pcOffset_;
1.4442 +
1.4443 + ICGetPropCallGetter(Kind kind, JitCode *stubCode, ICStub *firstMonitorStub, HandleObject holder,
1.4444 + HandleShape holderShape, HandleFunction getter, uint32_t pcOffset);
1.4445 +
1.4446 + public:
1.4447 + HeapPtrObject &holder() {
1.4448 + return holder_;
1.4449 + }
1.4450 + HeapPtrShape &holderShape() {
1.4451 + return holderShape_;
1.4452 + }
1.4453 + HeapPtrFunction &getter() {
1.4454 + return getter_;
1.4455 + }
1.4456 +
1.4457 + static size_t offsetOfHolder() {
1.4458 + return offsetof(ICGetPropCallGetter, holder_);
1.4459 + }
1.4460 + static size_t offsetOfHolderShape() {
1.4461 + return offsetof(ICGetPropCallGetter, holderShape_);
1.4462 + }
1.4463 + static size_t offsetOfGetter() {
1.4464 + return offsetof(ICGetPropCallGetter, getter_);
1.4465 + }
1.4466 + static size_t offsetOfPCOffset() {
1.4467 + return offsetof(ICGetPropCallGetter, pcOffset_);
1.4468 + }
1.4469 +
1.4470 + class Compiler : public ICStubCompiler {
1.4471 + protected:
1.4472 + ICStub *firstMonitorStub_;
1.4473 + RootedObject holder_;
1.4474 + RootedFunction getter_;
1.4475 + uint32_t pcOffset_;
1.4476 +
1.4477 + public:
1.4478 + Compiler(JSContext *cx, ICStub::Kind kind, ICStub *firstMonitorStub,
1.4479 + HandleObject holder, HandleFunction getter, uint32_t pcOffset)
1.4480 + : ICStubCompiler(cx, kind),
1.4481 + firstMonitorStub_(firstMonitorStub),
1.4482 + holder_(cx, holder),
1.4483 + getter_(cx, getter),
1.4484 + pcOffset_(pcOffset)
1.4485 + {
1.4486 + JS_ASSERT(kind == ICStub::GetProp_CallScripted ||
1.4487 + kind == ICStub::GetProp_CallNative ||
1.4488 + kind == ICStub::GetProp_CallNativePrototype);
1.4489 + }
1.4490 + };
1.4491 +};
1.4492 +
1.4493 +// Stub for calling a getter (native or scripted) on a native object when the getter is kept on
1.4494 +// the proto-chain.
1.4495 +class ICGetPropCallPrototypeGetter : public ICGetPropCallGetter
1.4496 +{
1.4497 + friend class ICStubSpace;
1.4498 +
1.4499 + protected:
1.4500 + // shape of receiver object.
1.4501 + HeapPtrShape receiverShape_;
1.4502 +
1.4503 + ICGetPropCallPrototypeGetter(Kind kind, JitCode *stubCode, ICStub *firstMonitorStub,
1.4504 + HandleShape receiverShape,
1.4505 + HandleObject holder, HandleShape holderShape,
1.4506 + HandleFunction getter, uint32_t pcOffset);
1.4507 +
1.4508 + public:
1.4509 + HeapPtrShape &receiverShape() {
1.4510 + return receiverShape_;
1.4511 + }
1.4512 +
1.4513 + static size_t offsetOfReceiverShape() {
1.4514 + return offsetof(ICGetPropCallPrototypeGetter, receiverShape_);
1.4515 + }
1.4516 +
1.4517 + class Compiler : public ICGetPropCallGetter::Compiler {
1.4518 + protected:
1.4519 + RootedObject receiver_;
1.4520 +
1.4521 + public:
1.4522 + Compiler(JSContext *cx, ICStub::Kind kind, ICStub *firstMonitorStub,
1.4523 + HandleObject obj, HandleObject holder, HandleFunction getter, uint32_t pcOffset)
1.4524 + : ICGetPropCallGetter::Compiler(cx, kind, firstMonitorStub, holder, getter, pcOffset),
1.4525 + receiver_(cx, obj)
1.4526 + {
1.4527 + JS_ASSERT(kind == ICStub::GetProp_CallScripted ||
1.4528 + kind == ICStub::GetProp_CallNativePrototype);
1.4529 + }
1.4530 + };
1.4531 +};
1.4532 +
1.4533 +// Stub for calling a scripted getter on a native object when the getter is kept on the
1.4534 +// proto-chain.
1.4535 +class ICGetProp_CallScripted : public ICGetPropCallPrototypeGetter
1.4536 +{
1.4537 + friend class ICStubSpace;
1.4538 +
1.4539 + protected:
1.4540 + ICGetProp_CallScripted(JitCode *stubCode, ICStub *firstMonitorStub,
1.4541 + HandleShape receiverShape, HandleObject holder, HandleShape holderShape,
1.4542 + HandleFunction getter, uint32_t pcOffset)
1.4543 + : ICGetPropCallPrototypeGetter(GetProp_CallScripted, stubCode, firstMonitorStub,
1.4544 + receiverShape, holder, holderShape, getter, pcOffset)
1.4545 + {}
1.4546 +
1.4547 + public:
1.4548 + static inline ICGetProp_CallScripted *New(
1.4549 + ICStubSpace *space, JitCode *code, ICStub *firstMonitorStub,
1.4550 + HandleShape receiverShape, HandleObject holder, HandleShape holderShape,
1.4551 + HandleFunction getter, uint32_t pcOffset)
1.4552 + {
1.4553 + if (!code)
1.4554 + return nullptr;
1.4555 + return space->allocate<ICGetProp_CallScripted>(code, firstMonitorStub,
1.4556 + receiverShape, holder, holderShape, getter,
1.4557 + pcOffset);
1.4558 + }
1.4559 +
1.4560 + class Compiler : public ICGetPropCallPrototypeGetter::Compiler {
1.4561 + protected:
1.4562 + bool generateStubCode(MacroAssembler &masm);
1.4563 +
1.4564 + public:
1.4565 + Compiler(JSContext *cx, ICStub *firstMonitorStub, HandleObject obj,
1.4566 + HandleObject holder, HandleFunction getter, uint32_t pcOffset)
1.4567 + : ICGetPropCallPrototypeGetter::Compiler(cx, ICStub::GetProp_CallScripted,
1.4568 + firstMonitorStub, obj, holder,
1.4569 + getter, pcOffset)
1.4570 + {}
1.4571 +
1.4572 + ICStub *getStub(ICStubSpace *space) {
1.4573 + RootedShape receiverShape(cx, receiver_->lastProperty());
1.4574 + RootedShape holderShape(cx, holder_->lastProperty());
1.4575 + return ICGetProp_CallScripted::New(space, getStubCode(), firstMonitorStub_, receiverShape,
1.4576 + holder_, holderShape, getter_, pcOffset_);
1.4577 + }
1.4578 + };
1.4579 +};
1.4580 +
1.4581 +// Stub for calling an own native getter on a native object.
1.4582 +class ICGetProp_CallNative : public ICGetPropCallGetter
1.4583 +{
1.4584 + friend class ICStubSpace;
1.4585 +
1.4586 + protected:
1.4587 +
1.4588 + ICGetProp_CallNative(JitCode *stubCode, ICStub *firstMonitorStub, HandleObject obj,
1.4589 + HandleShape shape, HandleFunction getter, uint32_t pcOffset)
1.4590 + : ICGetPropCallGetter(GetProp_CallNative, stubCode, firstMonitorStub, obj, shape,
1.4591 + getter, pcOffset)
1.4592 + { }
1.4593 +
1.4594 + public:
1.4595 + static inline ICGetProp_CallNative *New(ICStubSpace *space, JitCode *code,
1.4596 + ICStub *firstMonitorStub, HandleObject obj,
1.4597 + HandleShape shape, HandleFunction getter,
1.4598 + uint32_t pcOffset)
1.4599 + {
1.4600 + if (!code)
1.4601 + return nullptr;
1.4602 + return space->allocate<ICGetProp_CallNative>(code, firstMonitorStub, obj, shape,
1.4603 + getter, pcOffset);
1.4604 + }
1.4605 +
1.4606 + class Compiler : public ICGetPropCallGetter::Compiler
1.4607 + {
1.4608 + bool inputDefinitelyObject_;
1.4609 + protected:
1.4610 + bool generateStubCode(MacroAssembler &masm);
1.4611 +
1.4612 + virtual int32_t getKey() const {
1.4613 + return static_cast<int32_t>(kind) |
1.4614 + (static_cast<int32_t>(inputDefinitelyObject_) << 16);
1.4615 + }
1.4616 +
1.4617 + public:
1.4618 + Compiler(JSContext *cx, ICStub *firstMonitorStub, HandleObject obj,
1.4619 + HandleFunction getter, uint32_t pcOffset, bool inputDefinitelyObject = false)
1.4620 + : ICGetPropCallGetter::Compiler(cx, ICStub::GetProp_CallNative, firstMonitorStub,
1.4621 + obj, getter, pcOffset),
1.4622 + inputDefinitelyObject_(inputDefinitelyObject)
1.4623 + {}
1.4624 +
1.4625 + ICStub *getStub(ICStubSpace *space) {
1.4626 + RootedShape shape(cx, holder_->lastProperty());
1.4627 + return ICGetProp_CallNative::New(space, getStubCode(), firstMonitorStub_, holder_,
1.4628 + shape, getter_, pcOffset_);
1.4629 + }
1.4630 + };
1.4631 +};
1.4632 +
1.4633 +// Stub for calling an native getter on a native object when the getter is kept on the proto-chain.
1.4634 +class ICGetProp_CallNativePrototype : public ICGetPropCallPrototypeGetter
1.4635 +{
1.4636 + friend class ICStubSpace;
1.4637 +
1.4638 + protected:
1.4639 + ICGetProp_CallNativePrototype(JitCode *stubCode, ICStub *firstMonitorStub,
1.4640 + HandleShape receiverShape, HandleObject holder, HandleShape holderShape,
1.4641 + HandleFunction getter, uint32_t pcOffset)
1.4642 + : ICGetPropCallPrototypeGetter(GetProp_CallNativePrototype, stubCode, firstMonitorStub,
1.4643 + receiverShape, holder, holderShape, getter, pcOffset)
1.4644 + {}
1.4645 +
1.4646 + public:
1.4647 + static inline ICGetProp_CallNativePrototype *New(
1.4648 + ICStubSpace *space, JitCode *code, ICStub *firstMonitorStub,
1.4649 + HandleShape receiverShape, HandleObject holder, HandleShape holderShape,
1.4650 + HandleFunction getter, uint32_t pcOffset)
1.4651 + {
1.4652 + if (!code)
1.4653 + return nullptr;
1.4654 + return space->allocate<ICGetProp_CallNativePrototype>(code, firstMonitorStub,
1.4655 + receiverShape, holder, holderShape,
1.4656 + getter, pcOffset);
1.4657 + }
1.4658 +
1.4659 + class Compiler : public ICGetPropCallPrototypeGetter::Compiler {
1.4660 + protected:
1.4661 + bool generateStubCode(MacroAssembler &masm);
1.4662 +
1.4663 + public:
1.4664 + Compiler(JSContext *cx, ICStub *firstMonitorStub, HandleObject obj,
1.4665 + HandleObject holder, HandleFunction getter, uint32_t pcOffset)
1.4666 + : ICGetPropCallPrototypeGetter::Compiler(cx, ICStub::GetProp_CallNativePrototype,
1.4667 + firstMonitorStub, obj, holder,
1.4668 + getter, pcOffset)
1.4669 + {}
1.4670 +
1.4671 + ICStub *getStub(ICStubSpace *space) {
1.4672 + RootedShape receiverShape(cx, receiver_->lastProperty());
1.4673 + RootedShape holderShape(cx, holder_->lastProperty());
1.4674 + return ICGetProp_CallNativePrototype::New(space, getStubCode(), firstMonitorStub_, receiverShape,
1.4675 + holder_, holderShape, getter_, pcOffset_);
1.4676 + }
1.4677 + };
1.4678 +};
1.4679 +
1.4680 +class ICGetPropCallDOMProxyNativeStub : public ICMonitoredStub
1.4681 +{
1.4682 + friend class ICStubSpace;
1.4683 + protected:
1.4684 + // Shape of the DOMProxy
1.4685 + HeapPtrShape shape_;
1.4686 +
1.4687 + // Proxy handler to check against.
1.4688 + BaseProxyHandler *proxyHandler_;
1.4689 +
1.4690 + // Object shape of expected expando object. (nullptr if no expando object should be there)
1.4691 + HeapPtrShape expandoShape_;
1.4692 +
1.4693 + // Holder and its shape.
1.4694 + HeapPtrObject holder_;
1.4695 + HeapPtrShape holderShape_;
1.4696 +
1.4697 + // Function to call.
1.4698 + HeapPtrFunction getter_;
1.4699 +
1.4700 + // PC offset of call
1.4701 + uint32_t pcOffset_;
1.4702 +
1.4703 + ICGetPropCallDOMProxyNativeStub(ICStub::Kind kind, JitCode *stubCode,
1.4704 + ICStub *firstMonitorStub, HandleShape shape,
1.4705 + BaseProxyHandler *proxyHandler, HandleShape expandoShape,
1.4706 + HandleObject holder, HandleShape holderShape,
1.4707 + HandleFunction getter, uint32_t pcOffset);
1.4708 +
1.4709 + public:
1.4710 + HeapPtrShape &shape() {
1.4711 + return shape_;
1.4712 + }
1.4713 + HeapPtrShape &expandoShape() {
1.4714 + return expandoShape_;
1.4715 + }
1.4716 + HeapPtrObject &holder() {
1.4717 + return holder_;
1.4718 + }
1.4719 + HeapPtrShape &holderShape() {
1.4720 + return holderShape_;
1.4721 + }
1.4722 + HeapPtrFunction &getter() {
1.4723 + return getter_;
1.4724 + }
1.4725 + uint32_t pcOffset() const {
1.4726 + return pcOffset_;
1.4727 + }
1.4728 +
1.4729 + static size_t offsetOfShape() {
1.4730 + return offsetof(ICGetPropCallDOMProxyNativeStub, shape_);
1.4731 + }
1.4732 + static size_t offsetOfProxyHandler() {
1.4733 + return offsetof(ICGetPropCallDOMProxyNativeStub, proxyHandler_);
1.4734 + }
1.4735 + static size_t offsetOfExpandoShape() {
1.4736 + return offsetof(ICGetPropCallDOMProxyNativeStub, expandoShape_);
1.4737 + }
1.4738 + static size_t offsetOfHolder() {
1.4739 + return offsetof(ICGetPropCallDOMProxyNativeStub, holder_);
1.4740 + }
1.4741 + static size_t offsetOfHolderShape() {
1.4742 + return offsetof(ICGetPropCallDOMProxyNativeStub, holderShape_);
1.4743 + }
1.4744 + static size_t offsetOfGetter() {
1.4745 + return offsetof(ICGetPropCallDOMProxyNativeStub, getter_);
1.4746 + }
1.4747 + static size_t offsetOfPCOffset() {
1.4748 + return offsetof(ICGetPropCallDOMProxyNativeStub, pcOffset_);
1.4749 + }
1.4750 +};
1.4751 +
1.4752 +class ICGetProp_CallDOMProxyNative : public ICGetPropCallDOMProxyNativeStub
1.4753 +{
1.4754 + friend class ICStubSpace;
1.4755 + ICGetProp_CallDOMProxyNative(JitCode *stubCode, ICStub *firstMonitorStub, HandleShape shape,
1.4756 + BaseProxyHandler *proxyHandler, HandleShape expandoShape,
1.4757 + HandleObject holder, HandleShape holderShape,
1.4758 + HandleFunction getter, uint32_t pcOffset)
1.4759 + : ICGetPropCallDOMProxyNativeStub(ICStub::GetProp_CallDOMProxyNative, stubCode,
1.4760 + firstMonitorStub, shape, proxyHandler, expandoShape,
1.4761 + holder, holderShape, getter, pcOffset)
1.4762 + {}
1.4763 +
1.4764 + public:
1.4765 + static inline ICGetProp_CallDOMProxyNative *New(
1.4766 + ICStubSpace *space, JitCode *code, ICStub *firstMonitorStub,
1.4767 + HandleShape shape, BaseProxyHandler *proxyHandler,
1.4768 + HandleShape expandoShape, HandleObject holder, HandleShape holderShape,
1.4769 + HandleFunction getter, uint32_t pcOffset)
1.4770 + {
1.4771 + if (!code)
1.4772 + return nullptr;
1.4773 + return space->allocate<ICGetProp_CallDOMProxyNative>(code, firstMonitorStub, shape,
1.4774 + proxyHandler, expandoShape, holder,
1.4775 + holderShape, getter, pcOffset);
1.4776 + }
1.4777 +};
1.4778 +
1.4779 +class ICGetProp_CallDOMProxyWithGenerationNative : public ICGetPropCallDOMProxyNativeStub
1.4780 +{
1.4781 + protected:
1.4782 + ExpandoAndGeneration *expandoAndGeneration_;
1.4783 + uint32_t generation_;
1.4784 +
1.4785 + public:
1.4786 + ICGetProp_CallDOMProxyWithGenerationNative(JitCode *stubCode, ICStub *firstMonitorStub,
1.4787 + HandleShape shape, BaseProxyHandler *proxyHandler,
1.4788 + ExpandoAndGeneration *expandoAndGeneration,
1.4789 + uint32_t generation, HandleShape expandoShape,
1.4790 + HandleObject holder, HandleShape holderShape,
1.4791 + HandleFunction getter, uint32_t pcOffset)
1.4792 + : ICGetPropCallDOMProxyNativeStub(ICStub::GetProp_CallDOMProxyWithGenerationNative,
1.4793 + stubCode, firstMonitorStub, shape, proxyHandler,
1.4794 + expandoShape, holder, holderShape, getter, pcOffset),
1.4795 + expandoAndGeneration_(expandoAndGeneration),
1.4796 + generation_(generation)
1.4797 + {
1.4798 + }
1.4799 +
1.4800 + static inline ICGetProp_CallDOMProxyWithGenerationNative *New(
1.4801 + ICStubSpace *space, JitCode *code, ICStub *firstMonitorStub,
1.4802 + HandleShape shape, BaseProxyHandler *proxyHandler,
1.4803 + ExpandoAndGeneration *expandoAndGeneration, uint32_t generation,
1.4804 + HandleShape expandoShape, HandleObject holder, HandleShape holderShape,
1.4805 + HandleFunction getter, uint32_t pcOffset)
1.4806 + {
1.4807 + if (!code)
1.4808 + return nullptr;
1.4809 + return space->allocate<ICGetProp_CallDOMProxyWithGenerationNative>(code, firstMonitorStub,
1.4810 + shape, proxyHandler, expandoAndGeneration,
1.4811 + generation, expandoShape, holder, holderShape,
1.4812 + getter, pcOffset);
1.4813 + }
1.4814 +
1.4815 + void *expandoAndGeneration() const {
1.4816 + return expandoAndGeneration_;
1.4817 + }
1.4818 + uint32_t generation() const {
1.4819 + return generation_;
1.4820 + }
1.4821 +
1.4822 + void setGeneration(uint32_t value) {
1.4823 + generation_ = value;
1.4824 + }
1.4825 +
1.4826 + static size_t offsetOfInternalStruct() {
1.4827 + return offsetof(ICGetProp_CallDOMProxyWithGenerationNative, expandoAndGeneration_);
1.4828 + }
1.4829 + static size_t offsetOfGeneration() {
1.4830 + return offsetof(ICGetProp_CallDOMProxyWithGenerationNative, generation_);
1.4831 + }
1.4832 +};
1.4833 +
1.4834 +class ICGetPropCallDOMProxyNativeCompiler : public ICStubCompiler {
1.4835 + ICStub *firstMonitorStub_;
1.4836 + Rooted<ProxyObject*> proxy_;
1.4837 + RootedObject holder_;
1.4838 + RootedFunction getter_;
1.4839 + uint32_t pcOffset_;
1.4840 +
1.4841 + bool generateStubCode(MacroAssembler &masm, Address* internalStructAddr,
1.4842 + Address* generationAddr);
1.4843 + bool generateStubCode(MacroAssembler &masm);
1.4844 +
1.4845 + public:
1.4846 + ICGetPropCallDOMProxyNativeCompiler(JSContext *cx, ICStub::Kind kind,
1.4847 + ICStub *firstMonitorStub, Handle<ProxyObject*> proxy,
1.4848 + HandleObject holder, HandleFunction getter,
1.4849 + uint32_t pcOffset);
1.4850 +
1.4851 + ICStub *getStub(ICStubSpace *space);
1.4852 +};
1.4853 +
1.4854 +class ICGetProp_DOMProxyShadowed : public ICMonitoredStub
1.4855 +{
1.4856 + friend class ICStubSpace;
1.4857 + protected:
1.4858 + HeapPtrShape shape_;
1.4859 + BaseProxyHandler *proxyHandler_;
1.4860 + HeapPtrPropertyName name_;
1.4861 + uint32_t pcOffset_;
1.4862 +
1.4863 + ICGetProp_DOMProxyShadowed(JitCode *stubCode, ICStub *firstMonitorStub, HandleShape shape,
1.4864 + BaseProxyHandler *proxyHandler, HandlePropertyName name,
1.4865 + uint32_t pcOffset);
1.4866 +
1.4867 + public:
1.4868 + static inline ICGetProp_DOMProxyShadowed *New(ICStubSpace *space, JitCode *code,
1.4869 + ICStub *firstMonitorStub, HandleShape shape,
1.4870 + BaseProxyHandler *proxyHandler,
1.4871 + HandlePropertyName name, uint32_t pcOffset)
1.4872 + {
1.4873 + if (!code)
1.4874 + return nullptr;
1.4875 + return space->allocate<ICGetProp_DOMProxyShadowed>(code, firstMonitorStub, shape,
1.4876 + proxyHandler, name, pcOffset);
1.4877 + }
1.4878 +
1.4879 + HeapPtrShape &shape() {
1.4880 + return shape_;
1.4881 + }
1.4882 + HeapPtrPropertyName &name() {
1.4883 + return name_;
1.4884 + }
1.4885 +
1.4886 + static size_t offsetOfShape() {
1.4887 + return offsetof(ICGetProp_DOMProxyShadowed, shape_);
1.4888 + }
1.4889 + static size_t offsetOfProxyHandler() {
1.4890 + return offsetof(ICGetProp_DOMProxyShadowed, proxyHandler_);
1.4891 + }
1.4892 + static size_t offsetOfName() {
1.4893 + return offsetof(ICGetProp_DOMProxyShadowed, name_);
1.4894 + }
1.4895 + static size_t offsetOfPCOffset() {
1.4896 + return offsetof(ICGetProp_DOMProxyShadowed, pcOffset_);
1.4897 + }
1.4898 +
1.4899 + class Compiler : public ICStubCompiler {
1.4900 + ICStub *firstMonitorStub_;
1.4901 + Rooted<ProxyObject*> proxy_;
1.4902 + RootedPropertyName name_;
1.4903 + uint32_t pcOffset_;
1.4904 +
1.4905 + bool generateStubCode(MacroAssembler &masm);
1.4906 +
1.4907 + public:
1.4908 + Compiler(JSContext *cx, ICStub *firstMonitorStub, Handle<ProxyObject*> proxy,
1.4909 + HandlePropertyName name, uint32_t pcOffset)
1.4910 + : ICStubCompiler(cx, ICStub::GetProp_CallNative),
1.4911 + firstMonitorStub_(firstMonitorStub),
1.4912 + proxy_(cx, proxy),
1.4913 + name_(cx, name),
1.4914 + pcOffset_(pcOffset)
1.4915 + {}
1.4916 +
1.4917 + ICStub *getStub(ICStubSpace *space);
1.4918 + };
1.4919 +};
1.4920 +
1.4921 +class ICGetProp_ArgumentsLength : public ICStub
1.4922 +{
1.4923 + friend class ICStubSpace;
1.4924 + public:
1.4925 + enum Which { Normal, Strict, Magic };
1.4926 +
1.4927 + protected:
1.4928 + ICGetProp_ArgumentsLength(JitCode *stubCode)
1.4929 + : ICStub(ICStub::GetProp_ArgumentsLength, stubCode)
1.4930 + { }
1.4931 +
1.4932 + public:
1.4933 + static inline ICGetProp_ArgumentsLength *New(ICStubSpace *space, JitCode *code)
1.4934 + {
1.4935 + if (!code)
1.4936 + return nullptr;
1.4937 + return space->allocate<ICGetProp_ArgumentsLength>(code);
1.4938 + }
1.4939 +
1.4940 + class Compiler : public ICStubCompiler {
1.4941 + protected:
1.4942 + Which which_;
1.4943 +
1.4944 + bool generateStubCode(MacroAssembler &masm);
1.4945 +
1.4946 + virtual int32_t getKey() const {
1.4947 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(which_) << 16);
1.4948 + }
1.4949 +
1.4950 + public:
1.4951 + Compiler(JSContext *cx, Which which)
1.4952 + : ICStubCompiler(cx, ICStub::GetProp_ArgumentsLength),
1.4953 + which_(which)
1.4954 + {}
1.4955 +
1.4956 + ICStub *getStub(ICStubSpace *space) {
1.4957 + return ICGetProp_ArgumentsLength::New(space, getStubCode());
1.4958 + }
1.4959 + };
1.4960 +};
1.4961 +
1.4962 +// SetProp
1.4963 +// JSOP_SETPROP
1.4964 +// JSOP_SETNAME
1.4965 +// JSOP_SETGNAME
1.4966 +// JSOP_INITPROP
1.4967 +
1.4968 +class ICSetProp_Fallback : public ICFallbackStub
1.4969 +{
1.4970 + friend class ICStubSpace;
1.4971 +
1.4972 + ICSetProp_Fallback(JitCode *stubCode)
1.4973 + : ICFallbackStub(ICStub::SetProp_Fallback, stubCode)
1.4974 + { }
1.4975 +
1.4976 + public:
1.4977 + static const uint32_t MAX_OPTIMIZED_STUBS = 8;
1.4978 +
1.4979 + static inline ICSetProp_Fallback *New(ICStubSpace *space, JitCode *code) {
1.4980 + if (!code)
1.4981 + return nullptr;
1.4982 + return space->allocate<ICSetProp_Fallback>(code);
1.4983 + }
1.4984 +
1.4985 + static const size_t UNOPTIMIZABLE_ACCESS_BIT = 0;
1.4986 + void noteUnoptimizableAccess() {
1.4987 + extra_ |= (1u << UNOPTIMIZABLE_ACCESS_BIT);
1.4988 + }
1.4989 + bool hadUnoptimizableAccess() const {
1.4990 + return extra_ & (1u << UNOPTIMIZABLE_ACCESS_BIT);
1.4991 + }
1.4992 +
1.4993 + class Compiler : public ICStubCompiler {
1.4994 + protected:
1.4995 + uint32_t returnFromIonOffset_;
1.4996 + uint32_t returnFromStubOffset_;
1.4997 + bool generateStubCode(MacroAssembler &masm);
1.4998 + bool postGenerateStubCode(MacroAssembler &masm, Handle<JitCode *> code);
1.4999 +
1.5000 + public:
1.5001 + Compiler(JSContext *cx)
1.5002 + : ICStubCompiler(cx, ICStub::SetProp_Fallback)
1.5003 + { }
1.5004 +
1.5005 + ICStub *getStub(ICStubSpace *space) {
1.5006 + return ICSetProp_Fallback::New(space, getStubCode());
1.5007 + }
1.5008 + };
1.5009 +};
1.5010 +
1.5011 +// Optimized SETPROP/SETGNAME/SETNAME stub.
1.5012 +class ICSetProp_Native : public ICUpdatedStub
1.5013 +{
1.5014 + friend class ICStubSpace;
1.5015 +
1.5016 + protected: // Protected to silence Clang warning.
1.5017 + HeapPtrTypeObject type_;
1.5018 + HeapPtrShape shape_;
1.5019 + uint32_t offset_;
1.5020 +
1.5021 + ICSetProp_Native(JitCode *stubCode, HandleTypeObject type, HandleShape shape, uint32_t offset);
1.5022 +
1.5023 + public:
1.5024 + static inline ICSetProp_Native *New(ICStubSpace *space, JitCode *code, HandleTypeObject type,
1.5025 + HandleShape shape, uint32_t offset)
1.5026 + {
1.5027 + if (!code)
1.5028 + return nullptr;
1.5029 + return space->allocate<ICSetProp_Native>(code, type, shape, offset);
1.5030 + }
1.5031 + HeapPtrTypeObject &type() {
1.5032 + return type_;
1.5033 + }
1.5034 + HeapPtrShape &shape() {
1.5035 + return shape_;
1.5036 + }
1.5037 + static size_t offsetOfType() {
1.5038 + return offsetof(ICSetProp_Native, type_);
1.5039 + }
1.5040 + static size_t offsetOfShape() {
1.5041 + return offsetof(ICSetProp_Native, shape_);
1.5042 + }
1.5043 + static size_t offsetOfOffset() {
1.5044 + return offsetof(ICSetProp_Native, offset_);
1.5045 + }
1.5046 +
1.5047 + class Compiler : public ICStubCompiler {
1.5048 + RootedObject obj_;
1.5049 + bool isFixedSlot_;
1.5050 + uint32_t offset_;
1.5051 +
1.5052 + protected:
1.5053 + virtual int32_t getKey() const {
1.5054 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(isFixedSlot_) << 16);
1.5055 + }
1.5056 +
1.5057 + bool generateStubCode(MacroAssembler &masm);
1.5058 +
1.5059 + public:
1.5060 + Compiler(JSContext *cx, HandleObject obj, bool isFixedSlot, uint32_t offset)
1.5061 + : ICStubCompiler(cx, ICStub::SetProp_Native),
1.5062 + obj_(cx, obj),
1.5063 + isFixedSlot_(isFixedSlot),
1.5064 + offset_(offset)
1.5065 + {}
1.5066 +
1.5067 + ICUpdatedStub *getStub(ICStubSpace *space);
1.5068 + };
1.5069 +};
1.5070 +
1.5071 +
1.5072 +template <size_t ProtoChainDepth> class ICSetProp_NativeAddImpl;
1.5073 +
1.5074 +class ICSetProp_NativeAdd : public ICUpdatedStub
1.5075 +{
1.5076 + public:
1.5077 + static const size_t MAX_PROTO_CHAIN_DEPTH = 4;
1.5078 +
1.5079 + protected: // Protected to silence Clang warning.
1.5080 + HeapPtrTypeObject type_;
1.5081 + HeapPtrShape newShape_;
1.5082 + uint32_t offset_;
1.5083 +
1.5084 + ICSetProp_NativeAdd(JitCode *stubCode, HandleTypeObject type, size_t protoChainDepth,
1.5085 + HandleShape newShape, uint32_t offset);
1.5086 +
1.5087 + public:
1.5088 + size_t protoChainDepth() const {
1.5089 + return extra_;
1.5090 + }
1.5091 + HeapPtrTypeObject &type() {
1.5092 + return type_;
1.5093 + }
1.5094 + HeapPtrShape &newShape() {
1.5095 + return newShape_;
1.5096 + }
1.5097 +
1.5098 + template <size_t ProtoChainDepth>
1.5099 + ICSetProp_NativeAddImpl<ProtoChainDepth> *toImpl() {
1.5100 + JS_ASSERT(ProtoChainDepth == protoChainDepth());
1.5101 + return static_cast<ICSetProp_NativeAddImpl<ProtoChainDepth> *>(this);
1.5102 + }
1.5103 +
1.5104 + static size_t offsetOfType() {
1.5105 + return offsetof(ICSetProp_NativeAdd, type_);
1.5106 + }
1.5107 + static size_t offsetOfNewShape() {
1.5108 + return offsetof(ICSetProp_NativeAdd, newShape_);
1.5109 + }
1.5110 + static size_t offsetOfOffset() {
1.5111 + return offsetof(ICSetProp_NativeAdd, offset_);
1.5112 + }
1.5113 +};
1.5114 +
1.5115 +template <size_t ProtoChainDepth>
1.5116 +class ICSetProp_NativeAddImpl : public ICSetProp_NativeAdd
1.5117 +{
1.5118 + friend class ICStubSpace;
1.5119 +
1.5120 + static const size_t NumShapes = ProtoChainDepth + 1;
1.5121 + mozilla::Array<HeapPtrShape, NumShapes> shapes_;
1.5122 +
1.5123 + ICSetProp_NativeAddImpl(JitCode *stubCode, HandleTypeObject type,
1.5124 + const AutoShapeVector *shapes,
1.5125 + HandleShape newShape, uint32_t offset);
1.5126 +
1.5127 + public:
1.5128 + static inline ICSetProp_NativeAddImpl *New(
1.5129 + ICStubSpace *space, JitCode *code, HandleTypeObject type,
1.5130 + const AutoShapeVector *shapes, HandleShape newShape, uint32_t offset)
1.5131 + {
1.5132 + if (!code)
1.5133 + return nullptr;
1.5134 + return space->allocate<ICSetProp_NativeAddImpl<ProtoChainDepth> >(
1.5135 + code, type, shapes, newShape, offset);
1.5136 + }
1.5137 +
1.5138 + void traceShapes(JSTracer *trc) {
1.5139 + for (size_t i = 0; i < NumShapes; i++)
1.5140 + MarkShape(trc, &shapes_[i], "baseline-setpropnativeadd-stub-shape");
1.5141 + }
1.5142 +
1.5143 + static size_t offsetOfShape(size_t idx) {
1.5144 + return offsetof(ICSetProp_NativeAddImpl, shapes_) + (idx * sizeof(HeapPtrShape));
1.5145 + }
1.5146 +};
1.5147 +
1.5148 +class ICSetPropNativeAddCompiler : public ICStubCompiler {
1.5149 + RootedObject obj_;
1.5150 + RootedShape oldShape_;
1.5151 + size_t protoChainDepth_;
1.5152 + bool isFixedSlot_;
1.5153 + uint32_t offset_;
1.5154 +
1.5155 + protected:
1.5156 + virtual int32_t getKey() const {
1.5157 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(isFixedSlot_) << 16) |
1.5158 + (static_cast<int32_t>(protoChainDepth_) << 20);
1.5159 + }
1.5160 +
1.5161 + bool generateStubCode(MacroAssembler &masm);
1.5162 +
1.5163 + public:
1.5164 + ICSetPropNativeAddCompiler(JSContext *cx, HandleObject obj, HandleShape oldShape,
1.5165 + size_t protoChainDepth, bool isFixedSlot, uint32_t offset);
1.5166 +
1.5167 + template <size_t ProtoChainDepth>
1.5168 + ICUpdatedStub *getStubSpecific(ICStubSpace *space, const AutoShapeVector *shapes)
1.5169 + {
1.5170 + RootedTypeObject type(cx, obj_->getType(cx));
1.5171 + if (!type)
1.5172 + return nullptr;
1.5173 +
1.5174 + RootedShape newShape(cx, obj_->lastProperty());
1.5175 +
1.5176 + return ICSetProp_NativeAddImpl<ProtoChainDepth>::New(
1.5177 + space, getStubCode(), type, shapes, newShape, offset_);
1.5178 + }
1.5179 +
1.5180 + ICUpdatedStub *getStub(ICStubSpace *space);
1.5181 +};
1.5182 +
1.5183 +// Base stub for calling a setters on a native object.
1.5184 +class ICSetPropCallSetter : public ICStub
1.5185 +{
1.5186 + friend class ICStubSpace;
1.5187 +
1.5188 + protected:
1.5189 + // Object shape (lastProperty).
1.5190 + HeapPtrShape shape_;
1.5191 +
1.5192 + // Holder and shape.
1.5193 + HeapPtrObject holder_;
1.5194 + HeapPtrShape holderShape_;
1.5195 +
1.5196 + // Function to call.
1.5197 + HeapPtrFunction setter_;
1.5198 +
1.5199 + // PC of call, for profiler
1.5200 + uint32_t pcOffset_;
1.5201 +
1.5202 + ICSetPropCallSetter(Kind kind, JitCode *stubCode, HandleShape shape, HandleObject holder,
1.5203 + HandleShape holderShape, HandleFunction setter, uint32_t pcOffset);
1.5204 +
1.5205 + public:
1.5206 + HeapPtrShape &shape() {
1.5207 + return shape_;
1.5208 + }
1.5209 + HeapPtrObject &holder() {
1.5210 + return holder_;
1.5211 + }
1.5212 + HeapPtrShape &holderShape() {
1.5213 + return holderShape_;
1.5214 + }
1.5215 + HeapPtrFunction &setter() {
1.5216 + return setter_;
1.5217 + }
1.5218 +
1.5219 + static size_t offsetOfShape() {
1.5220 + return offsetof(ICSetPropCallSetter, shape_);
1.5221 + }
1.5222 + static size_t offsetOfHolder() {
1.5223 + return offsetof(ICSetPropCallSetter, holder_);
1.5224 + }
1.5225 + static size_t offsetOfHolderShape() {
1.5226 + return offsetof(ICSetPropCallSetter, holderShape_);
1.5227 + }
1.5228 + static size_t offsetOfSetter() {
1.5229 + return offsetof(ICSetPropCallSetter, setter_);
1.5230 + }
1.5231 + static size_t offsetOfPCOffset() {
1.5232 + return offsetof(ICSetPropCallSetter, pcOffset_);
1.5233 + }
1.5234 +
1.5235 + class Compiler : public ICStubCompiler {
1.5236 + protected:
1.5237 + RootedObject obj_;
1.5238 + RootedObject holder_;
1.5239 + RootedFunction setter_;
1.5240 + uint32_t pcOffset_;
1.5241 +
1.5242 + public:
1.5243 + Compiler(JSContext *cx, ICStub::Kind kind, HandleObject obj, HandleObject holder,
1.5244 + HandleFunction setter, uint32_t pcOffset)
1.5245 + : ICStubCompiler(cx, kind),
1.5246 + obj_(cx, obj),
1.5247 + holder_(cx, holder),
1.5248 + setter_(cx, setter),
1.5249 + pcOffset_(pcOffset)
1.5250 + {
1.5251 + JS_ASSERT(kind == ICStub::SetProp_CallScripted || kind == ICStub::SetProp_CallNative);
1.5252 + }
1.5253 + };
1.5254 +};
1.5255 +
1.5256 +// Stub for calling a scripted setter on a native object.
1.5257 +class ICSetProp_CallScripted : public ICSetPropCallSetter
1.5258 +{
1.5259 + friend class ICStubSpace;
1.5260 +
1.5261 + protected:
1.5262 + ICSetProp_CallScripted(JitCode *stubCode, HandleShape shape, HandleObject holder,
1.5263 + HandleShape holderShape, HandleFunction setter, uint32_t pcOffset)
1.5264 + : ICSetPropCallSetter(SetProp_CallScripted, stubCode, shape, holder, holderShape,
1.5265 + setter, pcOffset)
1.5266 + {}
1.5267 +
1.5268 + public:
1.5269 + static inline ICSetProp_CallScripted *New(ICStubSpace *space, JitCode *code,
1.5270 + HandleShape shape, HandleObject holder,
1.5271 + HandleShape holderShape, HandleFunction setter,
1.5272 + uint32_t pcOffset)
1.5273 + {
1.5274 + if (!code)
1.5275 + return nullptr;
1.5276 + return space->allocate<ICSetProp_CallScripted>(code, shape, holder, holderShape, setter,
1.5277 + pcOffset);
1.5278 + }
1.5279 +
1.5280 + class Compiler : public ICSetPropCallSetter::Compiler {
1.5281 + protected:
1.5282 + bool generateStubCode(MacroAssembler &masm);
1.5283 +
1.5284 + public:
1.5285 + Compiler(JSContext *cx, HandleObject obj, HandleObject holder, HandleFunction setter,
1.5286 + uint32_t pcOffset)
1.5287 + : ICSetPropCallSetter::Compiler(cx, ICStub::SetProp_CallScripted,
1.5288 + obj, holder, setter, pcOffset)
1.5289 + {}
1.5290 +
1.5291 + ICStub *getStub(ICStubSpace *space) {
1.5292 + RootedShape shape(cx, obj_->lastProperty());
1.5293 + RootedShape holderShape(cx, holder_->lastProperty());
1.5294 + return ICSetProp_CallScripted::New(space, getStubCode(), shape, holder_, holderShape,
1.5295 + setter_, pcOffset_);
1.5296 + }
1.5297 + };
1.5298 +};
1.5299 +
1.5300 +// Stub for calling a native setter on a native object.
1.5301 +class ICSetProp_CallNative : public ICSetPropCallSetter
1.5302 +{
1.5303 + friend class ICStubSpace;
1.5304 +
1.5305 + protected:
1.5306 + ICSetProp_CallNative(JitCode *stubCode, HandleShape shape, HandleObject holder,
1.5307 + HandleShape holderShape, HandleFunction setter, uint32_t pcOffset)
1.5308 + : ICSetPropCallSetter(SetProp_CallNative, stubCode, shape, holder, holderShape,
1.5309 + setter, pcOffset)
1.5310 + {}
1.5311 +
1.5312 + public:
1.5313 + static inline ICSetProp_CallNative *New(ICStubSpace *space, JitCode *code,
1.5314 + HandleShape shape, HandleObject holder,
1.5315 + HandleShape holderShape, HandleFunction setter,
1.5316 + uint32_t pcOffset)
1.5317 + {
1.5318 + if (!code)
1.5319 + return nullptr;
1.5320 + return space->allocate<ICSetProp_CallNative>(code, shape, holder, holderShape, setter,
1.5321 + pcOffset);
1.5322 + }
1.5323 +
1.5324 + class Compiler : public ICSetPropCallSetter::Compiler {
1.5325 + protected:
1.5326 + bool generateStubCode(MacroAssembler &masm);
1.5327 +
1.5328 + public:
1.5329 + Compiler(JSContext *cx, HandleObject obj, HandleObject holder, HandleFunction setter,
1.5330 + uint32_t pcOffset)
1.5331 + : ICSetPropCallSetter::Compiler(cx, ICStub::SetProp_CallNative,
1.5332 + obj, holder, setter, pcOffset)
1.5333 + {}
1.5334 +
1.5335 + ICStub *getStub(ICStubSpace *space) {
1.5336 + RootedShape shape(cx, obj_->lastProperty());
1.5337 + RootedShape holderShape(cx, holder_->lastProperty());
1.5338 + return ICSetProp_CallNative::New(space, getStubCode(), shape, holder_, holderShape,
1.5339 + setter_, pcOffset_);
1.5340 + }
1.5341 + };
1.5342 +};
1.5343 +
1.5344 +// Call
1.5345 +// JSOP_CALL
1.5346 +// JSOP_FUNAPPLY
1.5347 +// JSOP_FUNCALL
1.5348 +// JSOP_NEW
1.5349 +
1.5350 +class ICCallStubCompiler : public ICStubCompiler
1.5351 +{
1.5352 + protected:
1.5353 + ICCallStubCompiler(JSContext *cx, ICStub::Kind kind)
1.5354 + : ICStubCompiler(cx, kind)
1.5355 + { }
1.5356 +
1.5357 + enum FunApplyThing {
1.5358 + FunApply_MagicArgs,
1.5359 + FunApply_Array
1.5360 + };
1.5361 +
1.5362 + void pushCallArguments(MacroAssembler &masm, GeneralRegisterSet regs, Register argcReg);
1.5363 + Register guardFunApply(MacroAssembler &masm, GeneralRegisterSet regs, Register argcReg,
1.5364 + bool checkNative, FunApplyThing applyThing, Label *failure);
1.5365 + void pushCallerArguments(MacroAssembler &masm, GeneralRegisterSet regs);
1.5366 + void pushArrayArguments(MacroAssembler &masm, Address arrayVal, GeneralRegisterSet regs);
1.5367 +};
1.5368 +
1.5369 +class ICCall_Fallback : public ICMonitoredFallbackStub
1.5370 +{
1.5371 + friend class ICStubSpace;
1.5372 + public:
1.5373 + static const unsigned CONSTRUCTING_FLAG = 0x0001;
1.5374 +
1.5375 + static const uint32_t MAX_OPTIMIZED_STUBS = 16;
1.5376 + static const uint32_t MAX_SCRIPTED_STUBS = 7;
1.5377 + static const uint32_t MAX_NATIVE_STUBS = 7;
1.5378 + private:
1.5379 +
1.5380 + ICCall_Fallback(JitCode *stubCode, bool isConstructing)
1.5381 + : ICMonitoredFallbackStub(ICStub::Call_Fallback, stubCode)
1.5382 + {
1.5383 + extra_ = 0;
1.5384 + if (isConstructing)
1.5385 + extra_ |= CONSTRUCTING_FLAG;
1.5386 + }
1.5387 +
1.5388 + public:
1.5389 +
1.5390 + static inline ICCall_Fallback *New(ICStubSpace *space, JitCode *code, bool isConstructing)
1.5391 + {
1.5392 + if (!code)
1.5393 + return nullptr;
1.5394 + return space->allocate<ICCall_Fallback>(code, isConstructing);
1.5395 + }
1.5396 +
1.5397 + bool isConstructing() const {
1.5398 + return extra_ & CONSTRUCTING_FLAG;
1.5399 + }
1.5400 +
1.5401 + unsigned scriptedStubCount() const {
1.5402 + return numStubsWithKind(Call_Scripted);
1.5403 + }
1.5404 + bool scriptedStubsAreGeneralized() const {
1.5405 + return hasStub(Call_AnyScripted);
1.5406 + }
1.5407 +
1.5408 + unsigned nativeStubCount() const {
1.5409 + return numStubsWithKind(Call_Native);
1.5410 + }
1.5411 + bool nativeStubsAreGeneralized() const {
1.5412 + // Return hasStub(Call_AnyNative) after Call_AnyNative stub is added.
1.5413 + return false;
1.5414 + }
1.5415 +
1.5416 + // Compiler for this stub kind.
1.5417 + class Compiler : public ICCallStubCompiler {
1.5418 + protected:
1.5419 + bool isConstructing_;
1.5420 + uint32_t returnFromIonOffset_;
1.5421 + uint32_t returnFromStubOffset_;
1.5422 + bool generateStubCode(MacroAssembler &masm);
1.5423 + bool postGenerateStubCode(MacroAssembler &masm, Handle<JitCode *> code);
1.5424 +
1.5425 + public:
1.5426 + Compiler(JSContext *cx, bool isConstructing)
1.5427 + : ICCallStubCompiler(cx, ICStub::Call_Fallback),
1.5428 + isConstructing_(isConstructing)
1.5429 + { }
1.5430 +
1.5431 + ICStub *getStub(ICStubSpace *space) {
1.5432 + ICCall_Fallback *stub = ICCall_Fallback::New(space, getStubCode(), isConstructing_);
1.5433 + if (!stub || !stub->initMonitoringChain(cx, space))
1.5434 + return nullptr;
1.5435 + return stub;
1.5436 + }
1.5437 + };
1.5438 +};
1.5439 +
1.5440 +class ICCall_Scripted : public ICMonitoredStub
1.5441 +{
1.5442 + friend class ICStubSpace;
1.5443 +
1.5444 + protected:
1.5445 + HeapPtrScript calleeScript_;
1.5446 + HeapPtrObject templateObject_;
1.5447 + uint32_t pcOffset_;
1.5448 +
1.5449 + ICCall_Scripted(JitCode *stubCode, ICStub *firstMonitorStub,
1.5450 + HandleScript calleeScript, HandleObject templateObject,
1.5451 + uint32_t pcOffset);
1.5452 +
1.5453 + public:
1.5454 + static inline ICCall_Scripted *New(
1.5455 + ICStubSpace *space, JitCode *code, ICStub *firstMonitorStub,
1.5456 + HandleScript calleeScript, HandleObject templateObject,
1.5457 + uint32_t pcOffset)
1.5458 + {
1.5459 + if (!code)
1.5460 + return nullptr;
1.5461 + return space->allocate<ICCall_Scripted>(code, firstMonitorStub,
1.5462 + calleeScript, templateObject, pcOffset);
1.5463 + }
1.5464 +
1.5465 + HeapPtrScript &calleeScript() {
1.5466 + return calleeScript_;
1.5467 + }
1.5468 + HeapPtrObject &templateObject() {
1.5469 + return templateObject_;
1.5470 + }
1.5471 +
1.5472 + static size_t offsetOfCalleeScript() {
1.5473 + return offsetof(ICCall_Scripted, calleeScript_);
1.5474 + }
1.5475 + static size_t offsetOfPCOffset() {
1.5476 + return offsetof(ICCall_Scripted, pcOffset_);
1.5477 + }
1.5478 +};
1.5479 +
1.5480 +class ICCall_AnyScripted : public ICMonitoredStub
1.5481 +{
1.5482 + friend class ICStubSpace;
1.5483 +
1.5484 + protected:
1.5485 + uint32_t pcOffset_;
1.5486 +
1.5487 + ICCall_AnyScripted(JitCode *stubCode, ICStub *firstMonitorStub, uint32_t pcOffset)
1.5488 + : ICMonitoredStub(ICStub::Call_AnyScripted, stubCode, firstMonitorStub),
1.5489 + pcOffset_(pcOffset)
1.5490 + { }
1.5491 +
1.5492 + public:
1.5493 + static inline ICCall_AnyScripted *New(ICStubSpace *space, JitCode *code,
1.5494 + ICStub *firstMonitorStub, uint32_t pcOffset)
1.5495 + {
1.5496 + if (!code)
1.5497 + return nullptr;
1.5498 + return space->allocate<ICCall_AnyScripted>(code, firstMonitorStub, pcOffset);
1.5499 + }
1.5500 +
1.5501 + static size_t offsetOfPCOffset() {
1.5502 + return offsetof(ICCall_AnyScripted, pcOffset_);
1.5503 + }
1.5504 +};
1.5505 +
1.5506 +// Compiler for Call_Scripted and Call_AnyScripted stubs.
1.5507 +class ICCallScriptedCompiler : public ICCallStubCompiler {
1.5508 + protected:
1.5509 + ICStub *firstMonitorStub_;
1.5510 + bool isConstructing_;
1.5511 + RootedScript calleeScript_;
1.5512 + RootedObject templateObject_;
1.5513 + uint32_t pcOffset_;
1.5514 + bool generateStubCode(MacroAssembler &masm);
1.5515 +
1.5516 + virtual int32_t getKey() const {
1.5517 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(isConstructing_) << 16);
1.5518 + }
1.5519 +
1.5520 + public:
1.5521 + ICCallScriptedCompiler(JSContext *cx, ICStub *firstMonitorStub,
1.5522 + HandleScript calleeScript, HandleObject templateObject,
1.5523 + bool isConstructing, uint32_t pcOffset)
1.5524 + : ICCallStubCompiler(cx, ICStub::Call_Scripted),
1.5525 + firstMonitorStub_(firstMonitorStub),
1.5526 + isConstructing_(isConstructing),
1.5527 + calleeScript_(cx, calleeScript),
1.5528 + templateObject_(cx, templateObject),
1.5529 + pcOffset_(pcOffset)
1.5530 + { }
1.5531 +
1.5532 + ICCallScriptedCompiler(JSContext *cx, ICStub *firstMonitorStub, bool isConstructing,
1.5533 + uint32_t pcOffset)
1.5534 + : ICCallStubCompiler(cx, ICStub::Call_AnyScripted),
1.5535 + firstMonitorStub_(firstMonitorStub),
1.5536 + isConstructing_(isConstructing),
1.5537 + calleeScript_(cx, nullptr),
1.5538 + templateObject_(cx, nullptr),
1.5539 + pcOffset_(pcOffset)
1.5540 + { }
1.5541 +
1.5542 + ICStub *getStub(ICStubSpace *space) {
1.5543 + if (calleeScript_) {
1.5544 + return ICCall_Scripted::New(space, getStubCode(), firstMonitorStub_,
1.5545 + calleeScript_, templateObject_,
1.5546 + pcOffset_);
1.5547 + }
1.5548 + return ICCall_AnyScripted::New(space, getStubCode(), firstMonitorStub_, pcOffset_);
1.5549 + }
1.5550 +};
1.5551 +
1.5552 +class ICCall_Native : public ICMonitoredStub
1.5553 +{
1.5554 + friend class ICStubSpace;
1.5555 +
1.5556 + protected:
1.5557 + HeapPtrFunction callee_;
1.5558 + HeapPtrObject templateObject_;
1.5559 + uint32_t pcOffset_;
1.5560 +
1.5561 +#ifdef JS_ARM_SIMULATOR
1.5562 + void *native_;
1.5563 +#endif
1.5564 +
1.5565 + ICCall_Native(JitCode *stubCode, ICStub *firstMonitorStub,
1.5566 + HandleFunction callee, HandleObject templateObject,
1.5567 + uint32_t pcOffset);
1.5568 +
1.5569 + public:
1.5570 + static inline ICCall_Native *New(ICStubSpace *space, JitCode *code, ICStub *firstMonitorStub,
1.5571 + HandleFunction callee, HandleObject templateObject,
1.5572 + uint32_t pcOffset)
1.5573 + {
1.5574 + if (!code)
1.5575 + return nullptr;
1.5576 + return space->allocate<ICCall_Native>(code, firstMonitorStub,
1.5577 + callee, templateObject, pcOffset);
1.5578 + }
1.5579 +
1.5580 + HeapPtrFunction &callee() {
1.5581 + return callee_;
1.5582 + }
1.5583 + HeapPtrObject &templateObject() {
1.5584 + return templateObject_;
1.5585 + }
1.5586 +
1.5587 + static size_t offsetOfCallee() {
1.5588 + return offsetof(ICCall_Native, callee_);
1.5589 + }
1.5590 + static size_t offsetOfPCOffset() {
1.5591 + return offsetof(ICCall_Native, pcOffset_);
1.5592 + }
1.5593 +
1.5594 +#ifdef JS_ARM_SIMULATOR
1.5595 + static size_t offsetOfNative() {
1.5596 + return offsetof(ICCall_Native, native_);
1.5597 + }
1.5598 +#endif
1.5599 +
1.5600 + // Compiler for this stub kind.
1.5601 + class Compiler : public ICCallStubCompiler {
1.5602 + protected:
1.5603 + ICStub *firstMonitorStub_;
1.5604 + bool isConstructing_;
1.5605 + RootedFunction callee_;
1.5606 + RootedObject templateObject_;
1.5607 + uint32_t pcOffset_;
1.5608 + bool generateStubCode(MacroAssembler &masm);
1.5609 +
1.5610 + virtual int32_t getKey() const {
1.5611 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(isConstructing_) << 16);
1.5612 + }
1.5613 +
1.5614 + public:
1.5615 + Compiler(JSContext *cx, ICStub *firstMonitorStub,
1.5616 + HandleFunction callee, HandleObject templateObject,
1.5617 + bool isConstructing, uint32_t pcOffset)
1.5618 + : ICCallStubCompiler(cx, ICStub::Call_Native),
1.5619 + firstMonitorStub_(firstMonitorStub),
1.5620 + isConstructing_(isConstructing),
1.5621 + callee_(cx, callee),
1.5622 + templateObject_(cx, templateObject),
1.5623 + pcOffset_(pcOffset)
1.5624 + { }
1.5625 +
1.5626 + ICStub *getStub(ICStubSpace *space) {
1.5627 + return ICCall_Native::New(space, getStubCode(), firstMonitorStub_,
1.5628 + callee_, templateObject_, pcOffset_);
1.5629 + }
1.5630 + };
1.5631 +};
1.5632 +
1.5633 +class ICCall_ScriptedApplyArray : public ICMonitoredStub
1.5634 +{
1.5635 + friend class ICStubSpace;
1.5636 + public:
1.5637 + // The maximum length of an inlineable funcall array.
1.5638 + // Keep this small to avoid controllable stack overflows by attackers passing large
1.5639 + // arrays to fun.apply.
1.5640 + static const uint32_t MAX_ARGS_ARRAY_LENGTH = 16;
1.5641 +
1.5642 + protected:
1.5643 + uint32_t pcOffset_;
1.5644 +
1.5645 + ICCall_ScriptedApplyArray(JitCode *stubCode, ICStub *firstMonitorStub, uint32_t pcOffset)
1.5646 + : ICMonitoredStub(ICStub::Call_ScriptedApplyArray, stubCode, firstMonitorStub),
1.5647 + pcOffset_(pcOffset)
1.5648 + {}
1.5649 +
1.5650 + public:
1.5651 + static inline ICCall_ScriptedApplyArray *New(ICStubSpace *space, JitCode *code,
1.5652 + ICStub *firstMonitorStub, uint32_t pcOffset)
1.5653 + {
1.5654 + if (!code)
1.5655 + return nullptr;
1.5656 + return space->allocate<ICCall_ScriptedApplyArray>(code, firstMonitorStub, pcOffset);
1.5657 + }
1.5658 +
1.5659 + static size_t offsetOfPCOffset() {
1.5660 + return offsetof(ICCall_ScriptedApplyArray, pcOffset_);
1.5661 + }
1.5662 +
1.5663 + // Compiler for this stub kind.
1.5664 + class Compiler : public ICCallStubCompiler {
1.5665 + protected:
1.5666 + ICStub *firstMonitorStub_;
1.5667 + uint32_t pcOffset_;
1.5668 + bool generateStubCode(MacroAssembler &masm);
1.5669 +
1.5670 + virtual int32_t getKey() const {
1.5671 + return static_cast<int32_t>(kind);
1.5672 + }
1.5673 +
1.5674 + public:
1.5675 + Compiler(JSContext *cx, ICStub *firstMonitorStub, uint32_t pcOffset)
1.5676 + : ICCallStubCompiler(cx, ICStub::Call_ScriptedApplyArray),
1.5677 + firstMonitorStub_(firstMonitorStub),
1.5678 + pcOffset_(pcOffset)
1.5679 + { }
1.5680 +
1.5681 + ICStub *getStub(ICStubSpace *space) {
1.5682 + return ICCall_ScriptedApplyArray::New(space, getStubCode(), firstMonitorStub_,
1.5683 + pcOffset_);
1.5684 + }
1.5685 + };
1.5686 +};
1.5687 +
1.5688 +class ICCall_ScriptedApplyArguments : public ICMonitoredStub
1.5689 +{
1.5690 + friend class ICStubSpace;
1.5691 +
1.5692 + protected:
1.5693 + uint32_t pcOffset_;
1.5694 +
1.5695 + ICCall_ScriptedApplyArguments(JitCode *stubCode, ICStub *firstMonitorStub, uint32_t pcOffset)
1.5696 + : ICMonitoredStub(ICStub::Call_ScriptedApplyArguments, stubCode, firstMonitorStub),
1.5697 + pcOffset_(pcOffset)
1.5698 + {}
1.5699 +
1.5700 + public:
1.5701 + static inline ICCall_ScriptedApplyArguments *New(ICStubSpace *space, JitCode *code,
1.5702 + ICStub *firstMonitorStub, uint32_t pcOffset)
1.5703 + {
1.5704 + if (!code)
1.5705 + return nullptr;
1.5706 + return space->allocate<ICCall_ScriptedApplyArguments>(code, firstMonitorStub, pcOffset);
1.5707 + }
1.5708 +
1.5709 + static size_t offsetOfPCOffset() {
1.5710 + return offsetof(ICCall_ScriptedApplyArguments, pcOffset_);
1.5711 + }
1.5712 +
1.5713 + // Compiler for this stub kind.
1.5714 + class Compiler : public ICCallStubCompiler {
1.5715 + protected:
1.5716 + ICStub *firstMonitorStub_;
1.5717 + uint32_t pcOffset_;
1.5718 + bool generateStubCode(MacroAssembler &masm);
1.5719 +
1.5720 + virtual int32_t getKey() const {
1.5721 + return static_cast<int32_t>(kind);
1.5722 + }
1.5723 +
1.5724 + public:
1.5725 + Compiler(JSContext *cx, ICStub *firstMonitorStub, uint32_t pcOffset)
1.5726 + : ICCallStubCompiler(cx, ICStub::Call_ScriptedApplyArguments),
1.5727 + firstMonitorStub_(firstMonitorStub),
1.5728 + pcOffset_(pcOffset)
1.5729 + { }
1.5730 +
1.5731 + ICStub *getStub(ICStubSpace *space) {
1.5732 + return ICCall_ScriptedApplyArguments::New(space, getStubCode(), firstMonitorStub_,
1.5733 + pcOffset_);
1.5734 + }
1.5735 + };
1.5736 +};
1.5737 +
1.5738 +// Handles calls of the form |fun.call(...)| where fun is a scripted function.
1.5739 +class ICCall_ScriptedFunCall : public ICMonitoredStub
1.5740 +{
1.5741 + friend class ICStubSpace;
1.5742 +
1.5743 + protected:
1.5744 + uint32_t pcOffset_;
1.5745 +
1.5746 + ICCall_ScriptedFunCall(JitCode *stubCode, ICStub *firstMonitorStub, uint32_t pcOffset)
1.5747 + : ICMonitoredStub(ICStub::Call_ScriptedFunCall, stubCode, firstMonitorStub),
1.5748 + pcOffset_(pcOffset)
1.5749 + {}
1.5750 +
1.5751 + public:
1.5752 + static inline ICCall_ScriptedFunCall *New(ICStubSpace *space, JitCode *code,
1.5753 + ICStub *firstMonitorStub, uint32_t pcOffset)
1.5754 + {
1.5755 + if (!code)
1.5756 + return nullptr;
1.5757 + return space->allocate<ICCall_ScriptedFunCall>(code, firstMonitorStub, pcOffset);
1.5758 + }
1.5759 +
1.5760 + static size_t offsetOfPCOffset() {
1.5761 + return offsetof(ICCall_ScriptedFunCall, pcOffset_);
1.5762 + }
1.5763 +
1.5764 + // Compiler for this stub kind.
1.5765 + class Compiler : public ICCallStubCompiler {
1.5766 + protected:
1.5767 + ICStub *firstMonitorStub_;
1.5768 + uint32_t pcOffset_;
1.5769 + bool generateStubCode(MacroAssembler &masm);
1.5770 +
1.5771 + virtual int32_t getKey() const {
1.5772 + return static_cast<int32_t>(kind);
1.5773 + }
1.5774 +
1.5775 + public:
1.5776 + Compiler(JSContext *cx, ICStub *firstMonitorStub, uint32_t pcOffset)
1.5777 + : ICCallStubCompiler(cx, ICStub::Call_ScriptedFunCall),
1.5778 + firstMonitorStub_(firstMonitorStub),
1.5779 + pcOffset_(pcOffset)
1.5780 + { }
1.5781 +
1.5782 + ICStub *getStub(ICStubSpace *space) {
1.5783 + return ICCall_ScriptedFunCall::New(space, getStubCode(), firstMonitorStub_,
1.5784 + pcOffset_);
1.5785 + }
1.5786 + };
1.5787 +};
1.5788 +
1.5789 +// Stub for performing a TableSwitch, updating the IC's return address to jump
1.5790 +// to whatever point the switch is branching to.
1.5791 +class ICTableSwitch : public ICStub
1.5792 +{
1.5793 + friend class ICStubSpace;
1.5794 +
1.5795 + protected: // Protected to silence Clang warning.
1.5796 + void **table_;
1.5797 + int32_t min_;
1.5798 + int32_t length_;
1.5799 + void *defaultTarget_;
1.5800 +
1.5801 + ICTableSwitch(JitCode *stubCode, void **table,
1.5802 + int32_t min, int32_t length, void *defaultTarget)
1.5803 + : ICStub(TableSwitch, stubCode), table_(table),
1.5804 + min_(min), length_(length), defaultTarget_(defaultTarget)
1.5805 + {}
1.5806 +
1.5807 + public:
1.5808 + static inline ICTableSwitch *New(ICStubSpace *space, JitCode *code, void **table,
1.5809 + int32_t min, int32_t length, void *defaultTarget) {
1.5810 + if (!code)
1.5811 + return nullptr;
1.5812 + return space->allocate<ICTableSwitch>(code, table, min, length, defaultTarget);
1.5813 + }
1.5814 +
1.5815 + void fixupJumpTable(JSScript *script, BaselineScript *baseline);
1.5816 +
1.5817 + class Compiler : public ICStubCompiler {
1.5818 + bool generateStubCode(MacroAssembler &masm);
1.5819 +
1.5820 + jsbytecode *pc_;
1.5821 +
1.5822 + public:
1.5823 + Compiler(JSContext *cx, jsbytecode *pc)
1.5824 + : ICStubCompiler(cx, ICStub::TableSwitch), pc_(pc)
1.5825 + {}
1.5826 +
1.5827 + ICStub *getStub(ICStubSpace *space);
1.5828 + };
1.5829 +};
1.5830 +
1.5831 +// IC for constructing an iterator from an input value.
1.5832 +class ICIteratorNew_Fallback : public ICFallbackStub
1.5833 +{
1.5834 + friend class ICStubSpace;
1.5835 +
1.5836 + ICIteratorNew_Fallback(JitCode *stubCode)
1.5837 + : ICFallbackStub(ICStub::IteratorNew_Fallback, stubCode)
1.5838 + { }
1.5839 +
1.5840 + public:
1.5841 + static inline ICIteratorNew_Fallback *New(ICStubSpace *space, JitCode *code) {
1.5842 + if (!code)
1.5843 + return nullptr;
1.5844 + return space->allocate<ICIteratorNew_Fallback>(code);
1.5845 + }
1.5846 +
1.5847 + class Compiler : public ICStubCompiler {
1.5848 + protected:
1.5849 + bool generateStubCode(MacroAssembler &masm);
1.5850 +
1.5851 + public:
1.5852 + Compiler(JSContext *cx)
1.5853 + : ICStubCompiler(cx, ICStub::IteratorNew_Fallback)
1.5854 + { }
1.5855 +
1.5856 + ICStub *getStub(ICStubSpace *space) {
1.5857 + return ICIteratorNew_Fallback::New(space, getStubCode());
1.5858 + }
1.5859 + };
1.5860 +};
1.5861 +
1.5862 +// IC for testing if there are more values in an iterator.
1.5863 +class ICIteratorMore_Fallback : public ICFallbackStub
1.5864 +{
1.5865 + friend class ICStubSpace;
1.5866 +
1.5867 + ICIteratorMore_Fallback(JitCode *stubCode)
1.5868 + : ICFallbackStub(ICStub::IteratorMore_Fallback, stubCode)
1.5869 + { }
1.5870 +
1.5871 + public:
1.5872 + static inline ICIteratorMore_Fallback *New(ICStubSpace *space, JitCode *code) {
1.5873 + if (!code)
1.5874 + return nullptr;
1.5875 + return space->allocate<ICIteratorMore_Fallback>(code);
1.5876 + }
1.5877 +
1.5878 + class Compiler : public ICStubCompiler {
1.5879 + protected:
1.5880 + bool generateStubCode(MacroAssembler &masm);
1.5881 +
1.5882 + public:
1.5883 + Compiler(JSContext *cx)
1.5884 + : ICStubCompiler(cx, ICStub::IteratorMore_Fallback)
1.5885 + { }
1.5886 +
1.5887 + ICStub *getStub(ICStubSpace *space) {
1.5888 + return ICIteratorMore_Fallback::New(space, getStubCode());
1.5889 + }
1.5890 + };
1.5891 +};
1.5892 +
1.5893 +// IC for testing if there are more values in a native iterator.
1.5894 +class ICIteratorMore_Native : public ICStub
1.5895 +{
1.5896 + friend class ICStubSpace;
1.5897 +
1.5898 + ICIteratorMore_Native(JitCode *stubCode)
1.5899 + : ICStub(ICStub::IteratorMore_Native, stubCode)
1.5900 + { }
1.5901 +
1.5902 + public:
1.5903 + static inline ICIteratorMore_Native *New(ICStubSpace *space, JitCode *code) {
1.5904 + if (!code)
1.5905 + return nullptr;
1.5906 + return space->allocate<ICIteratorMore_Native>(code);
1.5907 + }
1.5908 +
1.5909 + class Compiler : public ICStubCompiler {
1.5910 + protected:
1.5911 + bool generateStubCode(MacroAssembler &masm);
1.5912 +
1.5913 + public:
1.5914 + Compiler(JSContext *cx)
1.5915 + : ICStubCompiler(cx, ICStub::IteratorMore_Native)
1.5916 + { }
1.5917 +
1.5918 + ICStub *getStub(ICStubSpace *space) {
1.5919 + return ICIteratorMore_Native::New(space, getStubCode());
1.5920 + }
1.5921 + };
1.5922 +};
1.5923 +
1.5924 +// IC for getting the next value in an iterator.
1.5925 +class ICIteratorNext_Fallback : public ICFallbackStub
1.5926 +{
1.5927 + friend class ICStubSpace;
1.5928 +
1.5929 + ICIteratorNext_Fallback(JitCode *stubCode)
1.5930 + : ICFallbackStub(ICStub::IteratorNext_Fallback, stubCode)
1.5931 + { }
1.5932 +
1.5933 + public:
1.5934 + static inline ICIteratorNext_Fallback *New(ICStubSpace *space, JitCode *code) {
1.5935 + if (!code)
1.5936 + return nullptr;
1.5937 + return space->allocate<ICIteratorNext_Fallback>(code);
1.5938 + }
1.5939 +
1.5940 + void setHasNonStringResult() {
1.5941 + JS_ASSERT(extra_ == 0);
1.5942 + extra_ = 1;
1.5943 + }
1.5944 + bool hasNonStringResult() const {
1.5945 + return extra_;
1.5946 + }
1.5947 +
1.5948 + class Compiler : public ICStubCompiler {
1.5949 + protected:
1.5950 + bool generateStubCode(MacroAssembler &masm);
1.5951 +
1.5952 + public:
1.5953 + Compiler(JSContext *cx)
1.5954 + : ICStubCompiler(cx, ICStub::IteratorNext_Fallback)
1.5955 + { }
1.5956 +
1.5957 + ICStub *getStub(ICStubSpace *space) {
1.5958 + return ICIteratorNext_Fallback::New(space, getStubCode());
1.5959 + }
1.5960 + };
1.5961 +};
1.5962 +
1.5963 +// IC for getting the next value in a native iterator.
1.5964 +class ICIteratorNext_Native : public ICStub
1.5965 +{
1.5966 + friend class ICStubSpace;
1.5967 +
1.5968 + ICIteratorNext_Native(JitCode *stubCode)
1.5969 + : ICStub(ICStub::IteratorNext_Native, stubCode)
1.5970 + { }
1.5971 +
1.5972 + public:
1.5973 + static inline ICIteratorNext_Native *New(ICStubSpace *space, JitCode *code) {
1.5974 + if (!code)
1.5975 + return nullptr;
1.5976 + return space->allocate<ICIteratorNext_Native>(code);
1.5977 + }
1.5978 +
1.5979 + class Compiler : public ICStubCompiler {
1.5980 + protected:
1.5981 + bool generateStubCode(MacroAssembler &masm);
1.5982 +
1.5983 + public:
1.5984 + Compiler(JSContext *cx)
1.5985 + : ICStubCompiler(cx, ICStub::IteratorNext_Native)
1.5986 + { }
1.5987 +
1.5988 + ICStub *getStub(ICStubSpace *space) {
1.5989 + return ICIteratorNext_Native::New(space, getStubCode());
1.5990 + }
1.5991 + };
1.5992 +};
1.5993 +
1.5994 +// IC for closing an iterator.
1.5995 +class ICIteratorClose_Fallback : public ICFallbackStub
1.5996 +{
1.5997 + friend class ICStubSpace;
1.5998 +
1.5999 + ICIteratorClose_Fallback(JitCode *stubCode)
1.6000 + : ICFallbackStub(ICStub::IteratorClose_Fallback, stubCode)
1.6001 + { }
1.6002 +
1.6003 + public:
1.6004 + static inline ICIteratorClose_Fallback *New(ICStubSpace *space, JitCode *code) {
1.6005 + if (!code)
1.6006 + return nullptr;
1.6007 + return space->allocate<ICIteratorClose_Fallback>(code);
1.6008 + }
1.6009 +
1.6010 + class Compiler : public ICStubCompiler {
1.6011 + protected:
1.6012 + bool generateStubCode(MacroAssembler &masm);
1.6013 +
1.6014 + public:
1.6015 + Compiler(JSContext *cx)
1.6016 + : ICStubCompiler(cx, ICStub::IteratorClose_Fallback)
1.6017 + { }
1.6018 +
1.6019 + ICStub *getStub(ICStubSpace *space) {
1.6020 + return ICIteratorClose_Fallback::New(space, getStubCode());
1.6021 + }
1.6022 + };
1.6023 +};
1.6024 +
1.6025 +// InstanceOf
1.6026 +// JSOP_INSTANCEOF
1.6027 +class ICInstanceOf_Fallback : public ICFallbackStub
1.6028 +{
1.6029 + friend class ICStubSpace;
1.6030 +
1.6031 + ICInstanceOf_Fallback(JitCode *stubCode)
1.6032 + : ICFallbackStub(ICStub::InstanceOf_Fallback, stubCode)
1.6033 + { }
1.6034 +
1.6035 + public:
1.6036 + static inline ICInstanceOf_Fallback *New(ICStubSpace *space, JitCode *code) {
1.6037 + if (!code)
1.6038 + return nullptr;
1.6039 + return space->allocate<ICInstanceOf_Fallback>(code);
1.6040 + }
1.6041 +
1.6042 + class Compiler : public ICStubCompiler {
1.6043 + protected:
1.6044 + bool generateStubCode(MacroAssembler &masm);
1.6045 +
1.6046 + public:
1.6047 + Compiler(JSContext *cx)
1.6048 + : ICStubCompiler(cx, ICStub::InstanceOf_Fallback)
1.6049 + { }
1.6050 +
1.6051 + ICStub *getStub(ICStubSpace *space) {
1.6052 + return ICInstanceOf_Fallback::New(space, getStubCode());
1.6053 + }
1.6054 + };
1.6055 +};
1.6056 +
1.6057 +// TypeOf
1.6058 +// JSOP_TYPEOF
1.6059 +// JSOP_TYPEOFEXPR
1.6060 +class ICTypeOf_Fallback : public ICFallbackStub
1.6061 +{
1.6062 + friend class ICStubSpace;
1.6063 +
1.6064 + ICTypeOf_Fallback(JitCode *stubCode)
1.6065 + : ICFallbackStub(ICStub::TypeOf_Fallback, stubCode)
1.6066 + { }
1.6067 +
1.6068 + public:
1.6069 + static inline ICTypeOf_Fallback *New(ICStubSpace *space, JitCode *code) {
1.6070 + if (!code)
1.6071 + return nullptr;
1.6072 + return space->allocate<ICTypeOf_Fallback>(code);
1.6073 + }
1.6074 +
1.6075 + class Compiler : public ICStubCompiler {
1.6076 + protected:
1.6077 + bool generateStubCode(MacroAssembler &masm);
1.6078 +
1.6079 + public:
1.6080 + Compiler(JSContext *cx)
1.6081 + : ICStubCompiler(cx, ICStub::TypeOf_Fallback)
1.6082 + { }
1.6083 +
1.6084 + ICStub *getStub(ICStubSpace *space) {
1.6085 + return ICTypeOf_Fallback::New(space, getStubCode());
1.6086 + }
1.6087 + };
1.6088 +};
1.6089 +
1.6090 +class ICTypeOf_Typed : public ICFallbackStub
1.6091 +{
1.6092 + friend class ICStubSpace;
1.6093 +
1.6094 + ICTypeOf_Typed(JitCode *stubCode, JSType type)
1.6095 + : ICFallbackStub(ICStub::TypeOf_Typed, stubCode)
1.6096 + {
1.6097 + extra_ = uint16_t(type);
1.6098 + JS_ASSERT(JSType(extra_) == type);
1.6099 + }
1.6100 +
1.6101 + public:
1.6102 + static inline ICTypeOf_Typed *New(ICStubSpace *space, JitCode *code, JSType type) {
1.6103 + if (!code)
1.6104 + return nullptr;
1.6105 + return space->allocate<ICTypeOf_Typed>(code, type);
1.6106 + }
1.6107 +
1.6108 + JSType type() const {
1.6109 + return JSType(extra_);
1.6110 + }
1.6111 +
1.6112 + class Compiler : public ICStubCompiler {
1.6113 + protected:
1.6114 + JSType type_;
1.6115 + RootedString typeString_;
1.6116 + bool generateStubCode(MacroAssembler &masm);
1.6117 +
1.6118 + virtual int32_t getKey() const {
1.6119 + return static_cast<int32_t>(kind) | (static_cast<int32_t>(type_) << 16);
1.6120 + }
1.6121 +
1.6122 + public:
1.6123 + Compiler(JSContext *cx, JSType type, HandleString string)
1.6124 + : ICStubCompiler(cx, ICStub::TypeOf_Typed),
1.6125 + type_(type),
1.6126 + typeString_(cx, string)
1.6127 + { }
1.6128 +
1.6129 + ICStub *getStub(ICStubSpace *space) {
1.6130 + return ICTypeOf_Typed::New(space, getStubCode(), type_);
1.6131 + }
1.6132 + };
1.6133 +};
1.6134 +
1.6135 +class ICRest_Fallback : public ICFallbackStub
1.6136 +{
1.6137 + friend class ICStubSpace;
1.6138 +
1.6139 + HeapPtrObject templateObject_;
1.6140 +
1.6141 + ICRest_Fallback(JitCode *stubCode, JSObject *templateObject)
1.6142 + : ICFallbackStub(ICStub::Rest_Fallback, stubCode), templateObject_(templateObject)
1.6143 + { }
1.6144 +
1.6145 + public:
1.6146 + static const uint32_t MAX_OPTIMIZED_STUBS = 8;
1.6147 +
1.6148 + static inline ICRest_Fallback *New(ICStubSpace *space, JitCode *code,
1.6149 + JSObject *templateObject) {
1.6150 + if (!code)
1.6151 + return nullptr;
1.6152 + return space->allocate<ICRest_Fallback>(code, templateObject);
1.6153 + }
1.6154 +
1.6155 + HeapPtrObject &templateObject() {
1.6156 + return templateObject_;
1.6157 + }
1.6158 +
1.6159 + class Compiler : public ICStubCompiler {
1.6160 + protected:
1.6161 + RootedObject templateObject;
1.6162 + bool generateStubCode(MacroAssembler &masm);
1.6163 +
1.6164 + public:
1.6165 + Compiler(JSContext *cx, JSObject *templateObject)
1.6166 + : ICStubCompiler(cx, ICStub::Rest_Fallback),
1.6167 + templateObject(cx, templateObject)
1.6168 + { }
1.6169 +
1.6170 + ICStub *getStub(ICStubSpace *space) {
1.6171 + return ICRest_Fallback::New(space, getStubCode(), templateObject);
1.6172 + }
1.6173 + };
1.6174 +};
1.6175 +
1.6176 +// Stub for JSOP_RETSUB ("returning" from a |finally| block).
1.6177 +class ICRetSub_Fallback : public ICFallbackStub
1.6178 +{
1.6179 + friend class ICStubSpace;
1.6180 +
1.6181 + ICRetSub_Fallback(JitCode *stubCode)
1.6182 + : ICFallbackStub(ICStub::RetSub_Fallback, stubCode)
1.6183 + { }
1.6184 +
1.6185 + public:
1.6186 + static const uint32_t MAX_OPTIMIZED_STUBS = 8;
1.6187 +
1.6188 + static inline ICRetSub_Fallback *New(ICStubSpace *space, JitCode *code) {
1.6189 + if (!code)
1.6190 + return nullptr;
1.6191 + return space->allocate<ICRetSub_Fallback>(code);
1.6192 + }
1.6193 +
1.6194 + class Compiler : public ICStubCompiler {
1.6195 + protected:
1.6196 + bool generateStubCode(MacroAssembler &masm);
1.6197 +
1.6198 + public:
1.6199 + Compiler(JSContext *cx)
1.6200 + : ICStubCompiler(cx, ICStub::RetSub_Fallback)
1.6201 + { }
1.6202 +
1.6203 + ICStub *getStub(ICStubSpace *space) {
1.6204 + return ICRetSub_Fallback::New(space, getStubCode());
1.6205 + }
1.6206 + };
1.6207 +};
1.6208 +
1.6209 +// Optimized JSOP_RETSUB stub. Every stub maps a single pc offset to its
1.6210 +// native code address.
1.6211 +class ICRetSub_Resume : public ICStub
1.6212 +{
1.6213 + friend class ICStubSpace;
1.6214 +
1.6215 + protected:
1.6216 + uint32_t pcOffset_;
1.6217 + uint8_t *addr_;
1.6218 +
1.6219 + ICRetSub_Resume(JitCode *stubCode, uint32_t pcOffset, uint8_t *addr)
1.6220 + : ICStub(ICStub::RetSub_Resume, stubCode),
1.6221 + pcOffset_(pcOffset),
1.6222 + addr_(addr)
1.6223 + { }
1.6224 +
1.6225 + public:
1.6226 + static ICRetSub_Resume *New(ICStubSpace *space, JitCode *code, uint32_t pcOffset,
1.6227 + uint8_t *addr) {
1.6228 + if (!code)
1.6229 + return nullptr;
1.6230 + return space->allocate<ICRetSub_Resume>(code, pcOffset, addr);
1.6231 + }
1.6232 +
1.6233 + static size_t offsetOfPCOffset() {
1.6234 + return offsetof(ICRetSub_Resume, pcOffset_);
1.6235 + }
1.6236 + static size_t offsetOfAddr() {
1.6237 + return offsetof(ICRetSub_Resume, addr_);
1.6238 + }
1.6239 +
1.6240 + class Compiler : public ICStubCompiler {
1.6241 + uint32_t pcOffset_;
1.6242 + uint8_t *addr_;
1.6243 +
1.6244 + bool generateStubCode(MacroAssembler &masm);
1.6245 +
1.6246 + public:
1.6247 + Compiler(JSContext *cx, uint32_t pcOffset, uint8_t *addr)
1.6248 + : ICStubCompiler(cx, ICStub::RetSub_Resume),
1.6249 + pcOffset_(pcOffset),
1.6250 + addr_(addr)
1.6251 + { }
1.6252 +
1.6253 + ICStub *getStub(ICStubSpace *space) {
1.6254 + return ICRetSub_Resume::New(space, getStubCode(), pcOffset_, addr_);
1.6255 + }
1.6256 + };
1.6257 +};
1.6258 +
1.6259 +} // namespace jit
1.6260 +} // namespace js
1.6261 +
1.6262 +#endif // JS_ION
1.6263 +
1.6264 +#endif /* jit_BaselineIC_h */
