/*
* Copyright (c) 2011, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.oracle.max.graal.compiler.asm;
import java.util.*;
import com.oracle.max.asm.*;
import com.oracle.max.criutils.*;
import com.oracle.max.graal.compiler.*;
import com.oracle.max.graal.compiler.lir.*;
import com.oracle.max.graal.compiler.util.*;
import com.sun.cri.ci.*;
import com.sun.cri.ri.*;
public class TargetMethodAssembler {
public final GraalCompilation compilation;
public final AbstractAssembler asm;
public final CiTargetMethod targetMethod;
public final CiTarget target;
private List<ExceptionInfo> exceptionInfoList;
private int lastSafepointPos;
public TargetMethodAssembler(GraalCompilation compilation, AbstractAssembler asm) {
this.compilation = compilation;
this.asm = asm;
this.targetMethod = new CiTargetMethod();
this.target = compilation.compiler.target;
// 0 is a valid pc for safepoints in template methods
this.lastSafepointPos = -1;
}
public void setFrameSize(int frameSize) {
targetMethod.setFrameSize(frameSize);
}
public CiTargetMethod.Mark recordMark(Object id, CiTargetMethod.Mark[] references) {
return targetMethod.recordMark(asm.codeBuffer.position(), id, references);
}
public void blockComment(String s) {
targetMethod.addAnnotation(new CiTargetMethod.CodeComment(asm.codeBuffer.position(), s));
}
public CiTargetMethod finishTargetMethod(Object name, RiRuntime runtime, boolean isStub) {
// Install code, data and frame size
targetMethod.setTargetCode(asm.codeBuffer.close(false), asm.codeBuffer.position());
// Record exception handlers if they exist
if (exceptionInfoList != null) {
for (ExceptionInfo ei : exceptionInfoList) {
int codeOffset = ei.codeOffset;
targetMethod.recordExceptionHandler(codeOffset, -1, 0, ei.exceptionEdge.label().position(), -1, null);
}
}
if (GraalOptions.Meter) {
compilation.compiler.context.metrics.TargetMethods++;
compilation.compiler.context.metrics.CodeBytesEmitted += targetMethod.targetCodeSize();
compilation.compiler.context.metrics.SafepointsEmitted += targetMethod.safepoints.size();
compilation.compiler.context.metrics.DataPatches += targetMethod.dataReferences.size();
compilation.compiler.context.metrics.ExceptionHandlersEmitted += targetMethod.exceptionHandlers.size();
}
if (GraalOptions.PrintAssembly && !TTY.isSuppressed() && !isStub) {
Util.printSection("Target Method", Util.SECTION_CHARACTER);
TTY.println("Name: " + name);
TTY.println("Frame size: " + targetMethod.frameSize());
TTY.println("Register size: " + asm.target.arch.registerReferenceMapBitCount);
if (GraalOptions.PrintCodeBytes) {
Util.printSection("Code", Util.SUB_SECTION_CHARACTER);
TTY.println("Code: %d bytes", targetMethod.targetCodeSize());
Util.printBytes(0L, targetMethod.targetCode(), 0, targetMethod.targetCodeSize(), GraalOptions.PrintAssemblyBytesPerLine);
}
Util.printSection("Disassembly", Util.SUB_SECTION_CHARACTER);
String disassembly = runtime.disassemble(targetMethod);
TTY.println(disassembly);
boolean noDis = disassembly == null || disassembly.length() == 0;
Util.printSection("Safepoints", Util.SUB_SECTION_CHARACTER);
for (CiTargetMethod.Safepoint x : targetMethod.safepoints) {
TTY.println(x.toString());
if (noDis && x.debugInfo != null) {
TTY.println(CiUtil.indent(x.debugInfo.toString(), " "));
}
}
Util.printSection("Data Patches", Util.SUB_SECTION_CHARACTER);
for (CiTargetMethod.DataPatch x : targetMethod.dataReferences) {
TTY.println(x.toString());
}
Util.printSection("Marks", Util.SUB_SECTION_CHARACTER);
for (CiTargetMethod.Mark x : targetMethod.marks) {
TTY.println(x.toString());
}
Util.printSection("Exception Handlers", Util.SUB_SECTION_CHARACTER);
for (CiTargetMethod.ExceptionHandler x : targetMethod.exceptionHandlers) {
TTY.println(x.toString());
}
}
return targetMethod;
}
public void recordExceptionHandlers(int pcOffset, LIRDebugInfo info) {
if (info != null) {
if (info.exceptionEdge != null) {
if (exceptionInfoList == null) {
exceptionInfoList = new ArrayList<ExceptionInfo>(4);
}
exceptionInfoList.add(new ExceptionInfo(pcOffset, info.exceptionEdge, info.topFrame.bci));
}
}
}
public void recordImplicitException(int pcOffset, LIRDebugInfo info) {
// record an implicit exception point
if (info != null) {
assert lastSafepointPos < pcOffset : lastSafepointPos + "<" + pcOffset;
lastSafepointPos = pcOffset;
targetMethod.recordSafepoint(pcOffset, info.debugInfo());
assert info.exceptionEdge == null;
}
}
public void recordDirectCall(int posBefore, int posAfter, Object target, LIRDebugInfo info) {
CiDebugInfo debugInfo = info != null ? info.debugInfo() : null;
assert lastSafepointPos < posAfter;
lastSafepointPos = posAfter;
targetMethod.recordCall(posBefore, posAfter - posBefore, target, debugInfo, true);
}
public void recordIndirectCall(int posBefore, int posAfter, Object target, LIRDebugInfo info) {
CiDebugInfo debugInfo = info != null ? info.debugInfo() : null;
assert lastSafepointPos < posAfter;
lastSafepointPos = posAfter;
targetMethod.recordCall(posBefore, posAfter - posBefore, target, debugInfo, false);
}
public void recordSafepoint(int pos, LIRDebugInfo info) {
// safepoints always need debug info
CiDebugInfo debugInfo = info.debugInfo();
assert lastSafepointPos < pos;
lastSafepointPos = pos;
targetMethod.recordSafepoint(pos, debugInfo);
}
public CiAddress recordDataReferenceInCode(CiConstant data, int alignment) {
assert data != null;
int pos = asm.codeBuffer.position();
if (GraalOptions.TraceRelocation) {
TTY.print("Data reference in code: pos = %d, data = %s", pos, data.toString());
}
targetMethod.recordDataReference(pos, data, alignment);
return CiAddress.Placeholder;
}
public int lastSafepointPos() {
return lastSafepointPos;
}
public CiRegister asIntReg(CiValue value) {
assert value.kind == CiKind.Int || value.kind == CiKind.Jsr;
return asRegister(value);
}
public CiRegister asLongReg(CiValue value) {
assert value.kind == CiKind.Long : value.kind;
return asRegister(value);
}
public CiRegister asObjectReg(CiValue value) {
assert value.kind == CiKind.Object;
return asRegister(value);
}
public CiRegister asFloatReg(CiValue value) {
assert value.kind == CiKind.Float;
return asRegister(value);
}
public CiRegister asDoubleReg(CiValue value) {
assert value.kind == CiKind.Double;
return asRegister(value);
}
public CiRegister asRegister(CiValue value) {
assert value.isRegister();
return value.asRegister();
}
/**
* Returns the integer value of any constants that can be represented by a 32-bit integer value,
* including long constants that fit into the 32-bit range.
*/
public int asIntConst(CiValue value) {
assert (value.kind.stackKind() == CiKind.Int || value.kind == CiKind.Jsr || value.kind == CiKind.Long) && value.isConstant();
long c = ((CiConstant) value).asLong();
if (!(NumUtil.isInt(c))) {
throw Util.shouldNotReachHere();
}
return (int) c;
}
/**
* Returns the address of a float constant that is embedded as a data references into the code.
*/
public CiAddress asFloatConstRef(CiValue value) {
return asFloatConstRef(value, 4);
}
public CiAddress asFloatConstRef(CiValue value, int alignment) {
assert value.kind == CiKind.Float && value.isConstant();
return recordDataReferenceInCode((CiConstant) value, alignment);
}
/**
* Returns the address of a double constant that is embedded as a data references into the code.
*/
public CiAddress asDoubleConstRef(CiValue value) {
return asDoubleConstRef(value, 8);
}
public CiAddress asDoubleConstRef(CiValue value, int alignment) {
assert value.kind == CiKind.Double && value.isConstant();
return recordDataReferenceInCode((CiConstant) value, alignment);
}
public CiAddress asAddress(CiValue value) {
if (value.isStackSlot()) {
return compilation.frameMap().toStackAddress((CiStackSlot) value);
}
return (CiAddress) value;
}
}