1/*
2 * Copyright (C) 2016-2018 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#include "config.h"
27#include "CCallHelpers.h"
28
29#if ENABLE(JIT)
30
31#include "ShadowChicken.h"
32
33namespace JSC {
34
35void CCallHelpers::logShadowChickenProloguePacket(GPRReg shadowPacket, GPRReg scratch1, GPRReg scope)
36{
37 storePtr(GPRInfo::callFrameRegister, Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, frame)));
38 loadPtr(Address(GPRInfo::callFrameRegister, OBJECT_OFFSETOF(CallerFrameAndPC, callerFrame)), scratch1);
39 storePtr(scratch1, Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, callerFrame)));
40 loadPtr(addressFor(CallFrameSlot::callee), scratch1);
41 storePtr(scratch1, Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, callee)));
42 storePtr(scope, Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, scope)));
43}
44
45void CCallHelpers::logShadowChickenTailPacket(GPRReg shadowPacket, JSValueRegs thisRegs, GPRReg scope, CodeBlock* codeBlock, CallSiteIndex callSiteIndex)
46{
47 storePtr(GPRInfo::callFrameRegister, Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, frame)));
48 storePtr(TrustedImmPtr(ShadowChicken::Packet::tailMarker()), Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, callee)));
49 storeValue(thisRegs, Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, thisValue)));
50 storePtr(scope, Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, scope)));
51 storePtr(TrustedImmPtr(codeBlock), Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, codeBlock)));
52 store32(TrustedImm32(callSiteIndex.bits()), Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, callSiteIndex)));
53}
54
55void CCallHelpers::ensureShadowChickenPacket(VM& vm, GPRReg shadowPacket, GPRReg scratch1NonArgGPR, GPRReg scratch2)
56{
57 ShadowChicken* shadowChicken = vm.shadowChicken();
58 RELEASE_ASSERT(shadowChicken);
59 ASSERT(!RegisterSet::argumentGPRS().get(scratch1NonArgGPR));
60 move(TrustedImmPtr(shadowChicken->addressOfLogCursor()), scratch1NonArgGPR);
61 loadPtr(Address(scratch1NonArgGPR), shadowPacket);
62 Jump ok = branchPtr(Below, shadowPacket, TrustedImmPtr(shadowChicken->logEnd()));
63 setupArguments<decltype(operationProcessShadowChickenLog)>(TrustedImmPtr(&vm));
64 prepareCallOperation(vm);
65 move(TrustedImmPtr(tagCFunctionPtr<OperationPtrTag>(operationProcessShadowChickenLog)), scratch1NonArgGPR);
66 call(scratch1NonArgGPR, OperationPtrTag);
67 move(TrustedImmPtr(shadowChicken->addressOfLogCursor()), scratch1NonArgGPR);
68 loadPtr(Address(scratch1NonArgGPR), shadowPacket);
69 ok.link(this);
70 addPtr(TrustedImm32(sizeof(ShadowChicken::Packet)), shadowPacket, scratch2);
71 storePtr(scratch2, Address(scratch1NonArgGPR));
72}
73
74} // namespace JSC
75
76#endif // ENABLE(JIT)
77