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/*
* Copyright (C) 2012-2013, 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 "LLIntThunks.h"
#include "CallData.h"
#include "ExceptionHelpers.h"
#include "Interpreter.h"
#include "JSCJSValueInlines.h"
#include "JSInterfaceJIT.h"
#include "JSObject.h"
#include "LLIntCLoop.h"
#include "LLIntData.h"
#include "LinkBuffer.h"
#include "LowLevelInterpreter.h"
#include "ProtoCallFrame.h"
#include "StackAlignment.h"
#include "VM.h"
namespace JSC {
EncodedJSValue JS_EXPORT_PRIVATE vmEntryToWasm(void* code, VM* vm, ProtoCallFrame* frame)
{
return vmEntryToJavaScript(code, vm, frame);
}
#if ENABLE(JIT)
namespace LLInt {
static MacroAssemblerCodeRef generateThunkWithJumpTo(VM* vm, void (*target)(), const char *thunkKind)
{
JSInterfaceJIT jit(vm);
// FIXME: there's probably a better way to do it on X86, but I'm not sure I care.
jit.move(JSInterfaceJIT::TrustedImmPtr(bitwise_cast<void*>(target)), JSInterfaceJIT::regT0);
jit.jump(JSInterfaceJIT::regT0);
LinkBuffer patchBuffer(*vm, jit, GLOBAL_THUNK_ID);
return FINALIZE_CODE(patchBuffer, ("LLInt %s prologue thunk", thunkKind));
}
MacroAssemblerCodeRef functionForCallEntryThunkGenerator(VM* vm)
{
return generateThunkWithJumpTo(vm, LLInt::getCodeFunctionPtr(llint_function_for_call_prologue), "function for call");
}
MacroAssemblerCodeRef functionForConstructEntryThunkGenerator(VM* vm)
{
return generateThunkWithJumpTo(vm, LLInt::getCodeFunctionPtr(llint_function_for_construct_prologue), "function for construct");
}
MacroAssemblerCodeRef functionForCallArityCheckThunkGenerator(VM* vm)
{
return generateThunkWithJumpTo(vm, LLInt::getCodeFunctionPtr(llint_function_for_call_arity_check), "function for call with arity check");
}
MacroAssemblerCodeRef functionForConstructArityCheckThunkGenerator(VM* vm)
{
return generateThunkWithJumpTo(vm, LLInt::getCodeFunctionPtr(llint_function_for_construct_arity_check), "function for construct with arity check");
}
MacroAssemblerCodeRef evalEntryThunkGenerator(VM* vm)
{
return generateThunkWithJumpTo(vm, LLInt::getCodeFunctionPtr(llint_eval_prologue), "eval");
}
MacroAssemblerCodeRef programEntryThunkGenerator(VM* vm)
{
return generateThunkWithJumpTo(vm, LLInt::getCodeFunctionPtr(llint_program_prologue), "program");
}
MacroAssemblerCodeRef moduleProgramEntryThunkGenerator(VM* vm)
{
return generateThunkWithJumpTo(vm, LLInt::getCodeFunctionPtr(llint_module_program_prologue), "module_program");
}
} // namespace LLInt
#else // ENABLE(JIT)
// Non-JIT (i.e. C Loop LLINT) case:
EncodedJSValue vmEntryToJavaScript(void* executableAddress, VM* vm, ProtoCallFrame* protoCallFrame)
{
JSValue result = CLoop::execute(llint_vm_entry_to_javascript, executableAddress, vm, protoCallFrame);
return JSValue::encode(result);
}
EncodedJSValue vmEntryToNative(void* executableAddress, VM* vm, ProtoCallFrame* protoCallFrame)
{
JSValue result = CLoop::execute(llint_vm_entry_to_native, executableAddress, vm, protoCallFrame);
return JSValue::encode(result);
}
extern "C" VMEntryRecord* vmEntryRecord(VMEntryFrame* entryFrame)
{
// The C Loop doesn't have any callee save registers, so the VMEntryRecord is allocated at the base of the frame.
intptr_t stackAlignment = stackAlignmentBytes();
intptr_t VMEntryTotalFrameSize = (sizeof(VMEntryRecord) + (stackAlignment - 1)) & ~(stackAlignment - 1);
return reinterpret_cast<VMEntryRecord*>(reinterpret_cast<char*>(entryFrame) - VMEntryTotalFrameSize);
}
#endif // ENABLE(JIT)
} // namespace JSC
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