/*
* Copyright (c) 2016, Oracle and/or its affiliates.
*
* 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.
*
* 3. Neither the name of the copyright holder nor the names of its contributors may be used to
* endorse or promote products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE
* COPYRIGHT HOLDER 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.
*/
package com.oracle.truffle.llvm.nodes.memory.load;
import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.dsl.NodeChild;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.interop.ForeignAccess;
import com.oracle.truffle.api.interop.Message;
import com.oracle.truffle.api.interop.TruffleObject;
import com.oracle.truffle.api.interop.UnknownIdentifierException;
import com.oracle.truffle.api.interop.UnsupportedMessageException;
import com.oracle.truffle.api.nodes.Node;
import com.oracle.truffle.api.profiles.LongValueProfile;
import com.oracle.truffle.llvm.runtime.LLVMAddress;
import com.oracle.truffle.llvm.runtime.LLVMBoxedPrimitive;
import com.oracle.truffle.llvm.runtime.LLVMTruffleObject;
import com.oracle.truffle.llvm.runtime.global.LLVMGlobalVariable;
import com.oracle.truffle.llvm.runtime.interop.ToLLVMNode;
import com.oracle.truffle.llvm.runtime.memory.LLVMMemory;
import com.oracle.truffle.llvm.runtime.nodes.api.LLVMExpressionNode;
import com.oracle.truffle.llvm.runtime.types.PrimitiveType;
@NodeChild(type = LLVMExpressionNode.class)
public abstract class LLVMI64LoadNode extends LLVMExpressionNode {
@Child protected Node foreignRead = Message.READ.createNode();
@Child protected ToLLVMNode toLLVM = ToLLVMNode.createNode(long.class);
protected long doForeignAccess(LLVMTruffleObject addr) {
try {
int index = (int) addr.getOffset() / LLVMExpressionNode.I64_SIZE_IN_BYTES;
Object value = ForeignAccess.sendRead(foreignRead, addr.getObject(), index);
return (long) toLLVM.executeWithTarget(value);
} catch (UnknownIdentifierException | UnsupportedMessageException e) {
throw new IllegalStateException(e);
}
}
private final LongValueProfile profile = LongValueProfile.createIdentityProfile();
@Specialization
public long executeI64(LLVMAddress addr) {
long val = LLVMMemory.getI64(addr);
return profile.profile(val);
}
@Specialization
public long executeI64(LLVMGlobalVariable addr) {
return profile.profile(addr.getI64());
}
@Specialization
public long executeI64(LLVMTruffleObject addr) {
return doForeignAccess(addr);
}
@Specialization
public long executeLLVMBoxedPrimitive(LLVMBoxedPrimitive addr) {
if (addr.getValue() instanceof Long) {
return LLVMMemory.getI64((long) addr.getValue());
} else {
CompilerDirectives.transferToInterpreter();
throw new IllegalAccessError("Cannot access address: " + addr.getValue());
}
}
@Specialization(guards = "notLLVM(addr)")
public long executeI64(TruffleObject addr) {
return executeI64(new LLVMTruffleObject(addr, PrimitiveType.I64));
}
}