Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.lir.amd64/src/com/oracle/graal/lir/amd64/AMD64Move.java @ 6329:92bc58dc5b5e
More clean up and documentation in api.code and api.meta.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
---|---|
date | Fri, 07 Sep 2012 13:40:53 +0200 |
parents | 141b15521a39 |
children | f2624e472426 |
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/* * Copyright (c) 2011, 2012, 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.graal.lir.amd64; import static com.oracle.graal.api.code.ValueUtil.*; import static com.oracle.graal.lir.LIRInstruction.OperandFlag.*; import static java.lang.Double.*; import static java.lang.Float.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.graph.*; import com.oracle.graal.lir.*; import com.oracle.graal.lir.LIRInstruction.Opcode; import com.oracle.graal.lir.StandardOp.MoveOp; import com.oracle.graal.lir.asm.*; import com.oracle.max.asm.*; import com.oracle.max.asm.target.amd64.*; public class AMD64Move { @Opcode("MOVE") public static class SpillMoveOp extends AMD64LIRInstruction implements MoveOp { @Def({REG, STACK}) protected Value result; @Use({REG, STACK, CONST}) protected Value input; public SpillMoveOp(Value result, Value input) { this.result = result; this.input = input; } @Override public void emitCode(TargetMethodAssembler tasm, AMD64MacroAssembler masm) { move(tasm, masm, getResult(), getInput()); } @Override public Value getInput() { return input; } @Override public Value getResult() { return result; } } @Opcode("MOVE") public static class MoveToRegOp extends AMD64LIRInstruction implements MoveOp { @Def({REG, HINT}) protected Value result; @Use({REG, STACK, CONST}) protected Value input; public MoveToRegOp(Value result, Value input) { this.result = result; this.input = input; } @Override public void emitCode(TargetMethodAssembler tasm, AMD64MacroAssembler masm) { move(tasm, masm, getResult(), getInput()); } @Override public Value getInput() { return input; } @Override public Value getResult() { return result; } } @Opcode("MOVE") public static class MoveFromRegOp extends AMD64LIRInstruction implements MoveOp { @Def({REG, STACK}) protected Value result; @Use({REG, CONST, HINT}) protected Value input; public MoveFromRegOp(Value result, Value input) { this.result = result; this.input = input; } @Override public void emitCode(TargetMethodAssembler tasm, AMD64MacroAssembler masm) { move(tasm, masm, getResult(), getInput()); } @Override public Value getInput() { return input; } @Override public Value getResult() { return result; } } public static class LoadOp extends AMD64LIRInstruction { @Def({REG}) protected Value result; @Use({ADDR}) protected Value address; @State protected LIRFrameState state; public LoadOp(Value result, Value address, LIRFrameState state) { this.result = result; this.address = address; this.state = state; } @Override public void emitCode(TargetMethodAssembler tasm, AMD64MacroAssembler masm) { load(tasm, masm, result, (Address) address, state); } } public static class StoreOp extends AMD64LIRInstruction { @Use({ADDR}) protected Value address; @Use({REG, CONST}) protected Value input; @State protected LIRFrameState state; public StoreOp(Value address, Value input, LIRFrameState state) { this.address = address; this.input = input; this.state = state; } @Override public void emitCode(TargetMethodAssembler tasm, AMD64MacroAssembler masm) { store(tasm, masm, (Address) address, input, state); } } public static class LeaOp extends AMD64LIRInstruction { @Def({REG}) protected Value result; @Use({ADDR, STACK, UNINITIALIZED}) protected Value address; public LeaOp(Value result, Value address) { this.result = result; this.address = address; } @Override public void emitCode(TargetMethodAssembler tasm, AMD64MacroAssembler masm) { masm.leaq(asLongReg(result), tasm.asAddress(address)); } } public static class MembarOp extends AMD64LIRInstruction { private final int barriers; public MembarOp(final int barriers) { this.barriers = barriers; } @Override public void emitCode(TargetMethodAssembler tasm, AMD64MacroAssembler masm) { masm.membar(barriers); } } public static class NullCheckOp extends AMD64LIRInstruction { @Use protected Value input; @State protected LIRFrameState state; public NullCheckOp(Variable input, LIRFrameState state) { this.input = input; this.state = state; } @Override public void emitCode(TargetMethodAssembler tasm, AMD64MacroAssembler masm) { tasm.recordImplicitException(masm.codeBuffer.position(), state); masm.nullCheck(asRegister(input)); } } @Opcode("CAS") public static class CompareAndSwapOp extends AMD64LIRInstruction { @Def protected Value result; @Use({ADDR}) protected Value address; @Use protected Value cmpValue; @Use protected Value newValue; public CompareAndSwapOp(Value result, Address address, Value cmpValue, Value newValue) { this.result = result; this.address = address; this.cmpValue = cmpValue; this.newValue = newValue; } @Override public void emitCode(TargetMethodAssembler tasm, AMD64MacroAssembler masm) { compareAndSwap(tasm, masm, result, (Address) address, cmpValue, newValue); } } public static void move(TargetMethodAssembler tasm, AMD64MacroAssembler masm, Value result, Value input) { if (isRegister(input)) { if (isRegister(result)) { reg2reg(masm, result, input); } else if (isStackSlot(result)) { reg2stack(tasm, masm, result, input); } else { throw GraalInternalError.shouldNotReachHere(); } } else if (isStackSlot(input)) { if (isRegister(result)) { stack2reg(tasm, masm, result, input); } else { throw GraalInternalError.shouldNotReachHere(); } } else if (isConstant(input)) { if (isRegister(result)) { const2reg(tasm, masm, result, (Constant) input); } else if (isStackSlot(result)) { const2stack(tasm, masm, result, (Constant) input); } else { throw GraalInternalError.shouldNotReachHere(); } } else { throw GraalInternalError.shouldNotReachHere(); } } private static void reg2reg(AMD64MacroAssembler masm, Value result, Value input) { if (input.equals(result)) { return; } switch (input.getKind()) { case Jsr: case Int: masm.movl(asRegister(result), asRegister(input)); break; case Long: masm.movq(asRegister(result), asRegister(input)); break; case Float: masm.movflt(asFloatReg(result), asFloatReg(input)); break; case Double: masm.movdbl(asDoubleReg(result), asDoubleReg(input)); break; case Object: masm.movq(asRegister(result), asRegister(input)); break; default: throw GraalInternalError.shouldNotReachHere("kind=" + result.getKind()); } } private static void reg2stack(TargetMethodAssembler tasm, AMD64MacroAssembler masm, Value result, Value input) { switch (input.getKind()) { case Jsr: case Int: masm.movl(tasm.asAddress(result), asRegister(input)); break; case Long: masm.movq(tasm.asAddress(result), asRegister(input)); break; case Float: masm.movflt(tasm.asAddress(result), asFloatReg(input)); break; case Double: masm.movsd(tasm.asAddress(result), asDoubleReg(input)); break; case Object: masm.movq(tasm.asAddress(result), asRegister(input)); break; default: throw GraalInternalError.shouldNotReachHere(); } } private static void stack2reg(TargetMethodAssembler tasm, AMD64MacroAssembler masm, Value result, Value input) { switch (input.getKind()) { case Jsr: case Int: masm.movl(asRegister(result), tasm.asAddress(input)); break; case Long: masm.movq(asRegister(result), tasm.asAddress(input)); break; case Float: masm.movflt(asFloatReg(result), tasm.asAddress(input)); break; case Double: masm.movdbl(asDoubleReg(result), tasm.asAddress(input)); break; case Object: masm.movq(asRegister(result), tasm.asAddress(input)); break; default: throw GraalInternalError.shouldNotReachHere(); } } private static void const2reg(TargetMethodAssembler tasm, AMD64MacroAssembler masm, Value result, Constant input) { // Note: we use the kind of the input operand (and not the kind of the result operand) because they don't match // in all cases. For example, an object constant can be loaded to a long register when unsafe casts occurred (e.g., // for a write barrier where arithmetic operations are then performed on the pointer). switch (input.getKind().stackKind()) { case Jsr: case Int: // Do not optimize with an XOR as this instruction may be between // a CMP and a Jcc in which case the XOR will modify the condition // flags and interfere with the Jcc. masm.movl(asRegister(result), tasm.asIntConst(input)); break; case Long: // Do not optimize with an XOR as this instruction may be between // a CMP and a Jcc in which case the XOR will modify the condition // flags and interfere with the Jcc. masm.movq(asRegister(result), input.asLong()); break; case Float: // This is *not* the same as 'constant == 0.0f' in the case where constant is -0.0f if (Float.floatToRawIntBits(input.asFloat()) == Float.floatToRawIntBits(0.0f)) { masm.xorps(asFloatReg(result), asFloatReg(result)); } else { masm.movflt(asFloatReg(result), tasm.asFloatConstRef(input)); } break; case Double: // This is *not* the same as 'constant == 0.0d' in the case where constant is -0.0d if (Double.doubleToRawLongBits(input.asDouble()) == Double.doubleToRawLongBits(0.0d)) { masm.xorpd(asDoubleReg(result), asDoubleReg(result)); } else { masm.movdbl(asDoubleReg(result), tasm.asDoubleConstRef(input)); } break; case Object: // Do not optimize with an XOR as this instruction may be between // a CMP and a Jcc in which case the XOR will modify the condition // flags and interfere with the Jcc. if (input.isNull()) { masm.movq(asRegister(result), 0x0L); } else if (tasm.target.inlineObjects) { tasm.recordDataReferenceInCode(input, 0); masm.movq(asRegister(result), 0xDEADDEADDEADDEADL); } else { masm.movq(asRegister(result), tasm.recordDataReferenceInCode(input, 0)); } break; default: throw GraalInternalError.shouldNotReachHere(); } } private static void const2stack(TargetMethodAssembler tasm, AMD64MacroAssembler masm, Value result, Constant input) { switch (input.getKind().stackKind()) { case Jsr: case Int: masm.movl(tasm.asAddress(result), input.asInt()); break; case Long: masm.movlong(tasm.asAddress(result), input.asLong()); break; case Float: masm.movl(tasm.asAddress(result), floatToRawIntBits(input.asFloat())); break; case Double: masm.movlong(tasm.asAddress(result), doubleToRawLongBits(input.asDouble())); break; case Object: if (input.isNull()) { masm.movlong(tasm.asAddress(result), 0L); } else { throw GraalInternalError.shouldNotReachHere("Non-null object constants must be in register"); } break; default: throw GraalInternalError.shouldNotReachHere(); } } public static void load(TargetMethodAssembler tasm, AMD64MacroAssembler masm, Value result, Address loadAddr, LIRFrameState info) { if (info != null) { tasm.recordImplicitException(masm.codeBuffer.position(), info); } switch (loadAddr.getKind()) { case Boolean: case Byte: masm.movsxb(asRegister(result), loadAddr); break; case Char: masm.movzxl(asRegister(result), loadAddr); break; case Short: masm.movswl(asRegister(result), loadAddr); break; case Int: masm.movslq(asRegister(result), loadAddr); break; case Long: masm.movq(asRegister(result), loadAddr); break; case Float: masm.movflt(asFloatReg(result), loadAddr); break; case Double: masm.movdbl(asDoubleReg(result), loadAddr); break; case Object: masm.movq(asRegister(result), loadAddr); break; default: throw GraalInternalError.shouldNotReachHere(); } } public static void store(TargetMethodAssembler tasm, AMD64MacroAssembler masm, Address storeAddr, Value input, LIRFrameState info) { if (info != null) { tasm.recordImplicitException(masm.codeBuffer.position(), info); } if (isRegister(input)) { switch (storeAddr.getKind()) { case Boolean: case Byte: masm.movb(storeAddr, asRegister(input)); break; case Char: case Short: masm.movw(storeAddr, asRegister(input)); break; case Int: masm.movl(storeAddr, asRegister(input)); break; case Long: masm.movq(storeAddr, asRegister(input)); break; case Float: masm.movflt(storeAddr, asFloatReg(input)); break; case Double: masm.movsd(storeAddr, asDoubleReg(input)); break; case Object: masm.movq(storeAddr, asRegister(input)); break; default: throw GraalInternalError.shouldNotReachHere(); } } else if (isConstant(input)) { Constant c = (Constant) input; switch (storeAddr.getKind()) { case Boolean: case Byte: masm.movb(storeAddr, c.asInt() & 0xFF); break; case Char: case Short: masm.movw(storeAddr, c.asInt() & 0xFFFF); break; case Jsr: case Int: masm.movl(storeAddr, c.asInt()); break; case Long: if (NumUtil.isInt(c.asLong())) { masm.movslq(storeAddr, (int) c.asLong()); } else { throw GraalInternalError.shouldNotReachHere("Cannot store 64-bit constants to memory"); } break; case Float: masm.movl(storeAddr, floatToRawIntBits(c.asFloat())); break; case Double: throw GraalInternalError.shouldNotReachHere("Cannot store 64-bit constants to memory"); case Object: if (c.isNull()) { masm.movptr(storeAddr, 0); } else { throw GraalInternalError.shouldNotReachHere("Cannot store 64-bit constants to memory"); } break; default: throw GraalInternalError.shouldNotReachHere(); } } else { throw GraalInternalError.shouldNotReachHere(); } } protected static void compareAndSwap(TargetMethodAssembler tasm, AMD64MacroAssembler masm, Value result, Address address, Value cmpValue, Value newValue) { assert asRegister(cmpValue) == AMD64.rax && asRegister(result) == AMD64.rax; if (tasm.target.isMP) { masm.lock(); } switch (cmpValue.getKind()) { case Int: masm.cmpxchgl(asRegister(newValue), address); break; case Long: case Object: masm.cmpxchgq(asRegister(newValue), address); break; default: throw GraalInternalError.shouldNotReachHere(); } } }