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1/*
2 * Copyright (C) 2011 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef DFGOperations_h
27#define DFGOperations_h
28
29#if ENABLE(DFG_JIT)
30
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31#include "DFGJITCompiler.h"
32#include "PutKind.h"
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33
34namespace JSC {
35
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36namespace DFG {
37
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38extern "C" {
39
40#if CALLING_CONVENTION_IS_STDCALL
41#define DFG_OPERATION CDECL
42#else
43#define DFG_OPERATION
44#endif
45
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46// These typedefs provide typechecking when generating calls out to helper routines;
47// this helps prevent calling a helper routine with the wrong arguments!
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48/*
49 Key:
50 V: void
51 J: JSValue
52 P: pointer (void*)
53 C: JSCell*
54 A: JSArray*
55 S: size_t
56 Z: int32_t
57 D: double
58 I: Identifier*
59 G: GlobalResolveInfo*
60*/
93a37866 61typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_E)(ExecState*);
6fe7ccc8 62typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EA)(ExecState*, JSArray*);
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63typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EAZ)(ExecState*, JSArray*, int32_t);
64typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EC)(ExecState*, JSCell*);
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65typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_ECC)(ExecState*, JSCell*, JSCell*);
66typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_ECI)(ExecState*, JSCell*, Identifier*);
67typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_ECJ)(ExecState*, JSCell*, EncodedJSValue);
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68typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EDA)(ExecState*, double, JSArray*);
69typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EGriJsgI)(ExecState*, ResolveOperation*, JSGlobalObject*, Identifier*);
6fe7ccc8 70typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EI)(ExecState*, Identifier*);
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71typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EIRo)(ExecState*, Identifier*, ResolveOperations*);
72typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EIRoPtbo)(ExecState*, Identifier*, ResolveOperations*, PutToBaseOperation*);
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73typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EJ)(ExecState*, EncodedJSValue);
74typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EJA)(ExecState*, EncodedJSValue, JSArray*);
75typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EJI)(ExecState*, EncodedJSValue, Identifier*);
76typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EJJ)(ExecState*, EncodedJSValue, EncodedJSValue);
77typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EJP)(ExecState*, EncodedJSValue, void*);
78typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EP)(ExecState*, void*);
79typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EPP)(ExecState*, void*, void*);
80typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EPS)(ExecState*, void*, size_t);
81typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_ESS)(ExecState*, size_t, size_t);
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82typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EZ)(ExecState*, int32_t);
83typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EZIcfZ)(ExecState*, int32_t, InlineCallFrame*, int32_t);
84typedef EncodedJSValue DFG_OPERATION (*J_DFGOperation_EZZ)(ExecState*, int32_t, int32_t);
6fe7ccc8 85typedef JSCell* DFG_OPERATION (*C_DFGOperation_E)(ExecState*);
93a37866 86typedef JSCell* DFG_OPERATION (*C_DFGOperation_EZ)(ExecState*, int32_t);
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87typedef JSCell* DFG_OPERATION (*C_DFGOperation_EC)(ExecState*, JSCell*);
88typedef JSCell* DFG_OPERATION (*C_DFGOperation_ECC)(ExecState*, JSCell*, JSCell*);
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89typedef JSCell* DFG_OPERATION (*C_DFGOperation_EIcf)(ExecState*, InlineCallFrame*);
90typedef JSCell* DFG_OPERATION (*C_DFGOperation_EJ)(ExecState*, EncodedJSValue);
91typedef JSCell* DFG_OPERATION (*C_DFGOperation_EJssSt)(ExecState*, JSString*, Structure*);
92typedef JSCell* DFG_OPERATION (*C_DFGOperation_EJssJss)(ExecState*, JSString*, JSString*);
93typedef JSCell* DFG_OPERATION (*C_DFGOperation_EJssJssJss)(ExecState*, JSString*, JSString*, JSString*);
94typedef JSCell* DFG_OPERATION (*C_DFGOperation_EOZ)(ExecState*, JSObject*, int32_t);
95typedef JSCell* DFG_OPERATION (*C_DFGOperation_ESt)(ExecState*, Structure*);
96typedef JSCell* DFG_OPERATION (*C_DFGOperation_EZ)(ExecState*, int32_t);
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97typedef double DFG_OPERATION (*D_DFGOperation_DD)(double, double);
98typedef double DFG_OPERATION (*D_DFGOperation_ZZ)(int32_t, int32_t);
99typedef double DFG_OPERATION (*D_DFGOperation_EJ)(ExecState*, EncodedJSValue);
100typedef int32_t DFG_OPERATION (*Z_DFGOperation_D)(double);
101typedef size_t DFG_OPERATION (*S_DFGOperation_ECC)(ExecState*, JSCell*, JSCell*);
102typedef size_t DFG_OPERATION (*S_DFGOperation_EJ)(ExecState*, EncodedJSValue);
103typedef size_t DFG_OPERATION (*S_DFGOperation_EJJ)(ExecState*, EncodedJSValue, EncodedJSValue);
104typedef size_t DFG_OPERATION (*S_DFGOperation_J)(EncodedJSValue);
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105typedef void DFG_OPERATION (*V_DFGOperation_EOZD)(ExecState*, JSObject*, int32_t, double);
106typedef void DFG_OPERATION (*V_DFGOperation_EOZJ)(ExecState*, JSObject*, int32_t, EncodedJSValue);
107typedef void DFG_OPERATION (*V_DFGOperation_EC)(ExecState*, JSCell*);
108typedef void DFG_OPERATION (*V_DFGOperation_ECIcf)(ExecState*, JSCell*, InlineCallFrame*);
109typedef void DFG_OPERATION (*V_DFGOperation_ECCIcf)(ExecState*, JSCell*, JSCell*, InlineCallFrame*);
6fe7ccc8 110typedef void DFG_OPERATION (*V_DFGOperation_ECJJ)(ExecState*, JSCell*, EncodedJSValue, EncodedJSValue);
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111typedef void DFG_OPERATION (*V_DFGOperation_ECZ)(ExecState*, JSCell*, int32_t);
112typedef void DFG_OPERATION (*V_DFGOperation_ECC)(ExecState*, JSCell*, JSCell*);
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113typedef void DFG_OPERATION (*V_DFGOperation_EJCI)(ExecState*, EncodedJSValue, JSCell*, Identifier*);
114typedef void DFG_OPERATION (*V_DFGOperation_EJJJ)(ExecState*, EncodedJSValue, EncodedJSValue, EncodedJSValue);
115typedef void DFG_OPERATION (*V_DFGOperation_EJPP)(ExecState*, EncodedJSValue, EncodedJSValue, void*);
116typedef void DFG_OPERATION (*V_DFGOperation_EPZJ)(ExecState*, void*, int32_t, EncodedJSValue);
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117typedef void DFG_OPERATION (*V_DFGOperation_W)(WatchpointSet*);
118typedef char* DFG_OPERATION (*P_DFGOperation_E)(ExecState*);
119typedef char* DFG_OPERATION (*P_DFGOperation_EC)(ExecState*, JSCell*);
120typedef char* DFG_OPERATION (*P_DFGOperation_EO)(ExecState*, JSObject*);
121typedef char* DFG_OPERATION (*P_DFGOperation_EOS)(ExecState*, JSObject*, size_t);
122typedef char* DFG_OPERATION (*P_DFGOperation_EOZ)(ExecState*, JSObject*, int32_t);
123typedef char* DFG_OPERATION (*P_DFGOperation_EPS)(ExecState*, void*, size_t);
124typedef char* DFG_OPERATION (*P_DFGOperation_ES)(ExecState*, size_t);
125typedef char* DFG_OPERATION (*P_DFGOperation_ESt)(ExecState*, Structure*);
126typedef char* DFG_OPERATION (*P_DFGOperation_EStPS)(ExecState*, Structure*, void*, size_t);
127typedef char* DFG_OPERATION (*P_DFGOperation_EStSS)(ExecState*, Structure*, size_t, size_t);
128typedef char* DFG_OPERATION (*P_DFGOperation_EStZ)(ExecState*, Structure*, int32_t);
129typedef StringImpl* DFG_OPERATION (*Str_DFGOperation_EJss)(ExecState*, JSString*);
130JSCell* DFG_OPERATION operationStringFromCharCode(ExecState*, int32_t) WTF_INTERNAL;
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131
132// These routines are provide callbacks out to C++ implementations of operations too complex to JIT.
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133JSCell* DFG_OPERATION operationNewObject(ExecState*, Structure*) WTF_INTERNAL;
134JSCell* DFG_OPERATION operationCreateThis(ExecState*, JSObject* constructor, int32_t inlineCapacity) WTF_INTERNAL;
135EncodedJSValue DFG_OPERATION operationConvertThis(ExecState*, EncodedJSValue encodedOp1) WTF_INTERNAL;
136EncodedJSValue DFG_OPERATION operationValueAdd(ExecState*, EncodedJSValue encodedOp1, EncodedJSValue encodedOp2) WTF_INTERNAL;
137EncodedJSValue DFG_OPERATION operationValueAddNotNumber(ExecState*, EncodedJSValue encodedOp1, EncodedJSValue encodedOp2) WTF_INTERNAL;
138EncodedJSValue DFG_OPERATION operationGetByVal(ExecState*, EncodedJSValue encodedBase, EncodedJSValue encodedProperty) WTF_INTERNAL;
139EncodedJSValue DFG_OPERATION operationGetByValCell(ExecState*, JSCell*, EncodedJSValue encodedProperty) WTF_INTERNAL;
140EncodedJSValue DFG_OPERATION operationGetByValArrayInt(ExecState*, JSArray*, int32_t) WTF_INTERNAL;
141EncodedJSValue DFG_OPERATION operationGetById(ExecState*, EncodedJSValue, Identifier*) WTF_INTERNAL;
142EncodedJSValue DFG_OPERATION operationGetByIdBuildList(ExecState*, EncodedJSValue, Identifier*) WTF_INTERNAL;
143EncodedJSValue DFG_OPERATION operationGetByIdProtoBuildList(ExecState*, EncodedJSValue, Identifier*) WTF_INTERNAL;
144EncodedJSValue DFG_OPERATION operationGetByIdOptimize(ExecState*, EncodedJSValue, Identifier*) WTF_INTERNAL;
145EncodedJSValue DFG_OPERATION operationCallCustomGetter(ExecState*, JSCell*, PropertySlot::GetValueFunc, Identifier*) WTF_INTERNAL;
146EncodedJSValue DFG_OPERATION operationCallGetter(ExecState*, JSCell*, JSCell*) WTF_INTERNAL;
147void DFG_OPERATION operationNotifyGlobalVarWrite(WatchpointSet* watchpointSet) WTF_INTERNAL;
148EncodedJSValue DFG_OPERATION operationResolve(ExecState*, Identifier*, ResolveOperations*) WTF_INTERNAL;
149EncodedJSValue DFG_OPERATION operationResolveBase(ExecState*, Identifier*, ResolveOperations*, PutToBaseOperation*) WTF_INTERNAL;
150EncodedJSValue DFG_OPERATION operationResolveBaseStrictPut(ExecState*, Identifier*, ResolveOperations*, PutToBaseOperation*) WTF_INTERNAL;
151EncodedJSValue DFG_OPERATION operationResolveGlobal(ExecState*, ResolveOperation*, JSGlobalObject*, Identifier*) WTF_INTERNAL;
152EncodedJSValue DFG_OPERATION operationToPrimitive(ExecState*, EncodedJSValue) WTF_INTERNAL;
153char* DFG_OPERATION operationNewArray(ExecState*, Structure*, void*, size_t) WTF_INTERNAL;
154char* DFG_OPERATION operationNewArrayBuffer(ExecState*, Structure*, size_t, size_t) WTF_INTERNAL;
155char* DFG_OPERATION operationNewEmptyArray(ExecState*, Structure*) WTF_INTERNAL;
156char* DFG_OPERATION operationNewArrayWithSize(ExecState*, Structure*, int32_t) WTF_INTERNAL;
157EncodedJSValue DFG_OPERATION operationNewRegexp(ExecState*, void*) WTF_INTERNAL;
158void DFG_OPERATION operationPutByValStrict(ExecState*, EncodedJSValue encodedBase, EncodedJSValue encodedProperty, EncodedJSValue encodedValue) WTF_INTERNAL;
159void DFG_OPERATION operationPutByValNonStrict(ExecState*, EncodedJSValue encodedBase, EncodedJSValue encodedProperty, EncodedJSValue encodedValue) WTF_INTERNAL;
160void DFG_OPERATION operationPutByValCellStrict(ExecState*, JSCell*, EncodedJSValue encodedProperty, EncodedJSValue encodedValue) WTF_INTERNAL;
161void DFG_OPERATION operationPutByValCellNonStrict(ExecState*, JSCell*, EncodedJSValue encodedProperty, EncodedJSValue encodedValue) WTF_INTERNAL;
162void DFG_OPERATION operationPutByValBeyondArrayBoundsStrict(ExecState*, JSObject*, int32_t index, EncodedJSValue encodedValue) WTF_INTERNAL;
163void DFG_OPERATION operationPutByValBeyondArrayBoundsNonStrict(ExecState*, JSObject*, int32_t index, EncodedJSValue encodedValue) WTF_INTERNAL;
164void DFG_OPERATION operationPutDoubleByValBeyondArrayBoundsStrict(ExecState*, JSObject*, int32_t index, double value) WTF_INTERNAL;
165void DFG_OPERATION operationPutDoubleByValBeyondArrayBoundsNonStrict(ExecState*, JSObject*, int32_t index, double value) WTF_INTERNAL;
166EncodedJSValue DFG_OPERATION operationArrayPush(ExecState*, EncodedJSValue encodedValue, JSArray*) WTF_INTERNAL;
167EncodedJSValue DFG_OPERATION operationArrayPushDouble(ExecState*, double value, JSArray*) WTF_INTERNAL;
168EncodedJSValue DFG_OPERATION operationArrayPop(ExecState*, JSArray*) WTF_INTERNAL;
169EncodedJSValue DFG_OPERATION operationArrayPopAndRecoverLength(ExecState*, JSArray*) WTF_INTERNAL;
170EncodedJSValue DFG_OPERATION operationRegExpExec(ExecState*, JSCell*, JSCell*) WTF_INTERNAL;
171void DFG_OPERATION operationPutByIdStrict(ExecState*, EncodedJSValue encodedValue, JSCell* base, Identifier*) WTF_INTERNAL;
172void DFG_OPERATION operationPutByIdNonStrict(ExecState*, EncodedJSValue encodedValue, JSCell* base, Identifier*) WTF_INTERNAL;
173void DFG_OPERATION operationPutByIdDirectStrict(ExecState*, EncodedJSValue encodedValue, JSCell* base, Identifier*) WTF_INTERNAL;
174void DFG_OPERATION operationPutByIdDirectNonStrict(ExecState*, EncodedJSValue encodedValue, JSCell* base, Identifier*) WTF_INTERNAL;
175void DFG_OPERATION operationPutByIdStrictOptimize(ExecState*, EncodedJSValue encodedValue, JSCell* base, Identifier*) WTF_INTERNAL;
176void DFG_OPERATION operationPutByIdNonStrictOptimize(ExecState*, EncodedJSValue encodedValue, JSCell* base, Identifier*) WTF_INTERNAL;
177void DFG_OPERATION operationPutByIdDirectStrictOptimize(ExecState*, EncodedJSValue encodedValue, JSCell* base, Identifier*) WTF_INTERNAL;
178void DFG_OPERATION operationPutByIdDirectNonStrictOptimize(ExecState*, EncodedJSValue encodedValue, JSCell* base, Identifier*) WTF_INTERNAL;
179void DFG_OPERATION operationPutByIdStrictBuildList(ExecState*, EncodedJSValue encodedValue, JSCell* base, Identifier*) WTF_INTERNAL;
180void DFG_OPERATION operationPutByIdNonStrictBuildList(ExecState*, EncodedJSValue encodedValue, JSCell* base, Identifier*) WTF_INTERNAL;
181void DFG_OPERATION operationPutByIdDirectStrictBuildList(ExecState*, EncodedJSValue encodedValue, JSCell* base, Identifier*) WTF_INTERNAL;
182void DFG_OPERATION operationPutByIdDirectNonStrictBuildList(ExecState*, EncodedJSValue encodedValue, JSCell* base, Identifier*) WTF_INTERNAL;
6fe7ccc8 183// These comparisons return a boolean within a size_t such that the value is zero extended to fill the register.
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184size_t DFG_OPERATION operationRegExpTest(ExecState*, JSCell*, JSCell*) WTF_INTERNAL;
185size_t DFG_OPERATION operationCompareLess(ExecState*, EncodedJSValue encodedOp1, EncodedJSValue encodedOp2) WTF_INTERNAL;
186size_t DFG_OPERATION operationCompareLessEq(ExecState*, EncodedJSValue encodedOp1, EncodedJSValue encodedOp2) WTF_INTERNAL;
187size_t DFG_OPERATION operationCompareGreater(ExecState*, EncodedJSValue encodedOp1, EncodedJSValue encodedOp2) WTF_INTERNAL;
188size_t DFG_OPERATION operationCompareGreaterEq(ExecState*, EncodedJSValue encodedOp1, EncodedJSValue encodedOp2) WTF_INTERNAL;
189size_t DFG_OPERATION operationCompareEq(ExecState*, EncodedJSValue encodedOp1, EncodedJSValue encodedOp2) WTF_INTERNAL;
190#if USE(JSVALUE64)
191EncodedJSValue DFG_OPERATION operationCompareStringEq(ExecState*, JSCell* left, JSCell* right) WTF_INTERNAL;
192#else
193size_t DFG_OPERATION operationCompareStringEq(ExecState*, JSCell* left, JSCell* right) WTF_INTERNAL;
194#endif
195size_t DFG_OPERATION operationCompareStrictEqCell(ExecState*, EncodedJSValue encodedOp1, EncodedJSValue encodedOp2) WTF_INTERNAL;
196size_t DFG_OPERATION operationCompareStrictEq(ExecState*, EncodedJSValue encodedOp1, EncodedJSValue encodedOp2) WTF_INTERNAL;
197char* DFG_OPERATION operationVirtualCall(ExecState*) WTF_INTERNAL;
198char* DFG_OPERATION operationLinkCall(ExecState*) WTF_INTERNAL;
199char* DFG_OPERATION operationLinkClosureCall(ExecState*) WTF_INTERNAL;
200char* DFG_OPERATION operationVirtualConstruct(ExecState*) WTF_INTERNAL;
201char* DFG_OPERATION operationLinkConstruct(ExecState*) WTF_INTERNAL;
202JSCell* DFG_OPERATION operationCreateActivation(ExecState*) WTF_INTERNAL;
203JSCell* DFG_OPERATION operationCreateArguments(ExecState*) WTF_INTERNAL;
204JSCell* DFG_OPERATION operationCreateInlinedArguments(ExecState*, InlineCallFrame*) WTF_INTERNAL;
205void DFG_OPERATION operationTearOffArguments(ExecState*, JSCell*, JSCell*) WTF_INTERNAL;
206void DFG_OPERATION operationTearOffInlinedArguments(ExecState*, JSCell*, JSCell*, InlineCallFrame*) WTF_INTERNAL;
207EncodedJSValue DFG_OPERATION operationGetArgumentsLength(ExecState*, int32_t) WTF_INTERNAL;
208EncodedJSValue DFG_OPERATION operationGetInlinedArgumentByVal(ExecState*, int32_t, InlineCallFrame*, int32_t) WTF_INTERNAL;
209EncodedJSValue DFG_OPERATION operationGetArgumentByVal(ExecState*, int32_t, int32_t) WTF_INTERNAL;
210JSCell* DFG_OPERATION operationNewFunctionNoCheck(ExecState*, JSCell*) WTF_INTERNAL;
211EncodedJSValue DFG_OPERATION operationNewFunction(ExecState*, JSCell*) WTF_INTERNAL;
212JSCell* DFG_OPERATION operationNewFunctionExpression(ExecState*, JSCell*) WTF_INTERNAL;
213double DFG_OPERATION operationFModOnInts(int32_t, int32_t) WTF_INTERNAL;
214size_t DFG_OPERATION operationIsObject(ExecState*, EncodedJSValue) WTF_INTERNAL;
215size_t DFG_OPERATION operationIsFunction(EncodedJSValue) WTF_INTERNAL;
216JSCell* DFG_OPERATION operationTypeOf(ExecState*, JSCell*) WTF_INTERNAL;
217void DFG_OPERATION operationReallocateStorageAndFinishPut(ExecState*, JSObject*, Structure*, PropertyOffset, EncodedJSValue) WTF_INTERNAL;
218char* DFG_OPERATION operationAllocatePropertyStorageWithInitialCapacity(ExecState*) WTF_INTERNAL;
219char* DFG_OPERATION operationAllocatePropertyStorage(ExecState*, size_t newSize) WTF_INTERNAL;
220char* DFG_OPERATION operationReallocateButterflyToHavePropertyStorageWithInitialCapacity(ExecState*, JSObject*) WTF_INTERNAL;
221char* DFG_OPERATION operationReallocateButterflyToGrowPropertyStorage(ExecState*, JSObject*, size_t newSize) WTF_INTERNAL;
222char* DFG_OPERATION operationEnsureInt32(ExecState*, JSCell*);
223char* DFG_OPERATION operationEnsureDouble(ExecState*, JSCell*);
224char* DFG_OPERATION operationEnsureContiguous(ExecState*, JSCell*);
225char* DFG_OPERATION operationRageEnsureContiguous(ExecState*, JSCell*);
226char* DFG_OPERATION operationEnsureArrayStorage(ExecState*, JSCell*);
227StringImpl* DFG_OPERATION operationResolveRope(ExecState*, JSString*);
228JSCell* DFG_OPERATION operationNewStringObject(ExecState*, JSString*, Structure*);
229JSCell* DFG_OPERATION operationToStringOnCell(ExecState*, JSCell*);
230JSCell* DFG_OPERATION operationToString(ExecState*, EncodedJSValue);
231JSCell* DFG_OPERATION operationMakeRope2(ExecState*, JSString*, JSString*);
232JSCell* DFG_OPERATION operationMakeRope3(ExecState*, JSString*, JSString*, JSString*);
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233
234// This method is used to lookup an exception hander, keyed by faultLocation, which is
235// the return location from one of the calls out to one of the helper operations above.
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236
237// According to C++ rules, a type used for the return signature of function with C linkage (i.e.
238// 'extern "C"') needs to be POD; hence putting any constructors into it could cause either compiler
239// warnings, or worse, a change in the ABI used to return these types.
14957cd0 240struct DFGHandler {
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241 union Union {
242 struct Struct {
243 ExecState* exec;
244 void* handler;
245 } s;
246 uint64_t encoded;
247 } u;
14957cd0 248};
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249
250inline DFGHandler createDFGHandler(ExecState* exec, void* handler)
251{
252 DFGHandler result;
253 result.u.s.exec = exec;
254 result.u.s.handler = handler;
255 return result;
256}
257
93a37866 258#if USE(JSVALUE64)
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259typedef DFGHandler DFGHandlerEncoded;
260inline DFGHandlerEncoded dfgHandlerEncoded(ExecState* exec, void* handler)
261{
262 return createDFGHandler(exec, handler);
263}
264#else
265typedef uint64_t DFGHandlerEncoded;
266inline DFGHandlerEncoded dfgHandlerEncoded(ExecState* exec, void* handler)
267{
268 COMPILE_ASSERT(sizeof(DFGHandler::Union) == sizeof(uint64_t), DFGHandler_Union_is_64bit);
269 return createDFGHandler(exec, handler).u.encoded;
270}
271#endif
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272DFGHandlerEncoded DFG_OPERATION lookupExceptionHandler(ExecState*, uint32_t) WTF_INTERNAL;
273DFGHandlerEncoded DFG_OPERATION lookupExceptionHandlerInStub(ExecState*, StructureStubInfo*) WTF_INTERNAL;
14957cd0 274
93a37866 275// These operations implement the implicitly called ToInt32 and ToBoolean conversions from ES5.
6fe7ccc8 276// This conversion returns an int32_t within a size_t such that the value is zero extended to fill the register.
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277size_t DFG_OPERATION dfgConvertJSValueToInt32(ExecState*, EncodedJSValue) WTF_INTERNAL;
278size_t DFG_OPERATION dfgConvertJSValueToBoolean(ExecState*, EncodedJSValue) WTF_INTERNAL;
6fe7ccc8 279
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280void DFG_OPERATION debugOperationPrintSpeculationFailure(ExecState*, void*, void*) WTF_INTERNAL;
281
282void DFG_OPERATION triggerReoptimizationNow(CodeBlock*) WTF_INTERNAL;
14957cd0 283
6fe7ccc8 284} // extern "C"
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285} } // namespace JSC::DFG
286
287#endif
288#endif