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Diffstat (limited to 'Source/JavaScriptCore/jit/CCallHelpers.cpp')
| -rw-r--r-- | Source/JavaScriptCore/jit/CCallHelpers.cpp | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/jit/CCallHelpers.cpp b/Source/JavaScriptCore/jit/CCallHelpers.cpp new file mode 100644 index 000000000..3c3df618f --- /dev/null +++ b/Source/JavaScriptCore/jit/CCallHelpers.cpp @@ -0,0 +1,73 @@ +/* + * Copyright (C) 2016 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "CCallHelpers.h" + +#if ENABLE(JIT) + +#include "ShadowChicken.h" + +namespace JSC { + +void CCallHelpers::logShadowChickenProloguePacket(GPRReg shadowPacket, GPRReg scratch1, GPRReg scope) +{ + storePtr(GPRInfo::callFrameRegister, Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, frame))); + loadPtr(Address(GPRInfo::callFrameRegister, OBJECT_OFFSETOF(CallerFrameAndPC, callerFrame)), scratch1); + storePtr(scratch1, Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, callerFrame))); + loadPtr(addressFor(CallFrameSlot::callee), scratch1); + storePtr(scratch1, Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, callee))); + storePtr(scope, Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, scope))); +} + +void CCallHelpers::logShadowChickenTailPacket(GPRReg shadowPacket, JSValueRegs thisRegs, GPRReg scope, CodeBlock* codeBlock, CallSiteIndex callSiteIndex) +{ + storePtr(GPRInfo::callFrameRegister, Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, frame))); + storePtr(TrustedImmPtr(ShadowChicken::Packet::tailMarker()), Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, callee))); + storeValue(thisRegs, Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, thisValue))); + storePtr(scope, Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, scope))); + storePtr(TrustedImmPtr(codeBlock), Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, codeBlock))); + store32(TrustedImm32(callSiteIndex.bits()), Address(shadowPacket, OBJECT_OFFSETOF(ShadowChicken::Packet, callSiteIndex))); +} + +void CCallHelpers::ensureShadowChickenPacket(GPRReg shadowPacket, GPRReg scratch1NonArgGPR, GPRReg scratch2) +{ + ASSERT(!RegisterSet::argumentGPRS().get(scratch1NonArgGPR)); + move(TrustedImmPtr(vm()->shadowChicken().addressOfLogCursor()), scratch1NonArgGPR); + loadPtr(Address(scratch1NonArgGPR), shadowPacket); + Jump ok = branchPtr(Below, shadowPacket, TrustedImmPtr(vm()->shadowChicken().logEnd())); + setupArgumentsExecState(); + move(TrustedImmPtr(bitwise_cast<void*>(operationProcessShadowChickenLog)), scratch1NonArgGPR); + call(scratch1NonArgGPR); + move(TrustedImmPtr(vm()->shadowChicken().addressOfLogCursor()), scratch1NonArgGPR); + loadPtr(Address(scratch1NonArgGPR), shadowPacket); + ok.link(this); + addPtr(TrustedImm32(sizeof(ShadowChicken::Packet)), shadowPacket, scratch2); + storePtr(scratch2, Address(scratch1NonArgGPR)); +} + +} // namespace JSC + +#endif // ENABLE(JIT) |