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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
* 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.
*
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package org.graalvm.compiler.truffle.hotspot.amd64;
import static jdk.vm.ci.hotspot.HotSpotCallingConventionType.JavaCall;
import jdk.vm.ci.amd64.AMD64;
import jdk.vm.ci.code.CodeCacheProvider;
import jdk.vm.ci.code.InstalledCode;
import jdk.vm.ci.code.Register;
import jdk.vm.ci.meta.JavaKind;
import org.graalvm.compiler.asm.Assembler;
import org.graalvm.compiler.asm.Label;
import org.graalvm.compiler.asm.amd64.AMD64Address;
import org.graalvm.compiler.asm.amd64.AMD64Assembler.ConditionFlag;
import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler;
import org.graalvm.compiler.code.CompilationResult;
import org.graalvm.compiler.core.common.spi.ForeignCallsProvider;
import org.graalvm.compiler.hotspot.amd64.AMD64HotSpotBackend;
import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
import org.graalvm.compiler.lir.asm.DataBuilder;
import org.graalvm.compiler.lir.asm.FrameContext;
import org.graalvm.compiler.lir.framemap.FrameMap;
import org.graalvm.compiler.options.OptionValues;
import org.graalvm.compiler.serviceprovider.ServiceProvider;
import org.graalvm.compiler.truffle.hotspot.OptimizedCallTargetInstrumentation;
import org.graalvm.compiler.truffle.hotspot.OptimizedCallTargetInstrumentationFactory;
@ServiceProvider(OptimizedCallTargetInstrumentationFactory.class)
public class AMD64OptimizedCallTargetInstrumentationFactory extends OptimizedCallTargetInstrumentationFactory {
@Override
public CompilationResultBuilder createBuilder(CodeCacheProvider codeCache, ForeignCallsProvider foreignCalls, FrameMap frameMap, Assembler asm, DataBuilder dataBuilder, FrameContext frameContext,
OptionValues options, CompilationResult compilationResult) {
return new OptimizedCallTargetInstrumentation(codeCache, foreignCalls, frameMap, asm, dataBuilder, frameContext, options, compilationResult, config, registers) {
@Override
protected void injectTailCallCode() {
@SuppressWarnings("hiding")
AMD64MacroAssembler asm = (AMD64MacroAssembler) this.asm;
Register thisRegister = codeCache.getRegisterConfig().getCallingConventionRegisters(JavaCall, JavaKind.Object).get(0);
Register spillRegister = AMD64.r10; // TODO(mg): fix me
Label doProlog = new Label();
int pos = asm.position();
AMD64Address codeBlobAddress = new AMD64Address(thisRegister, getFieldOffset("entryPoint", InstalledCode.class));
/*
* The first instruction must be at least 5 bytes long to be safe for not entrant
* patching, so force a wider encoding of the movq instruction.
*/
asm.movq(spillRegister, codeBlobAddress, true);
assert asm.position() - pos >= AMD64HotSpotBackend.PATCHED_VERIFIED_ENTRY_POINT_INSTRUCTION_SIZE;
asm.testq(spillRegister, spillRegister);
asm.jcc(ConditionFlag.Equal, doProlog);
asm.jmp(spillRegister);
asm.bind(doProlog);
}
};
}
@Override
public String getArchitecture() {
return "AMD64";
}
}