| /* |
| * Copyright (c) 2016, 2017, 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 jdk.tools.jaotc.amd64; |
| |
| import static jdk.vm.ci.amd64.AMD64.rax; |
| import static jdk.vm.ci.amd64.AMD64.rbx; |
| import static jdk.vm.ci.amd64.AMD64.rip; |
| |
| import jdk.tools.jaotc.StubInformation; |
| import jdk.tools.jaotc.ELFMacroAssembler; |
| import org.graalvm.compiler.asm.amd64.AMD64Address; |
| import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler; |
| |
| import jdk.vm.ci.code.TargetDescription; |
| |
| public final class AMD64ELFMacroAssembler extends AMD64MacroAssembler implements ELFMacroAssembler { |
| |
| private int currentEndOfInstruction; |
| |
| public AMD64ELFMacroAssembler(TargetDescription target) { |
| super(target); |
| } |
| |
| @Override |
| public int currentEndOfInstruction() { |
| return currentEndOfInstruction; |
| } |
| |
| @Override |
| public byte[] getPLTJumpCode() { |
| // The main dispatch instruction |
| // jmpq *0x00000000(%rip) |
| jmp(new AMD64Address(rip, 0)); |
| currentEndOfInstruction = position(); |
| |
| // Align to 8 bytes |
| align(8); |
| |
| return close(true); |
| } |
| |
| @Override |
| public byte[] getPLTStaticEntryCode(StubInformation stub) { |
| // The main dispatch instruction |
| // jmpq *0x00000000(%rip) |
| jmp(new AMD64Address(rip, 0)); |
| stub.setDispatchJumpOffset(position()); |
| |
| // C2I stub used to call interpreter. |
| // mov 0x00000000(%rip),%rbx Loading Method* |
| movq(rbx, new AMD64Address(rip, 0)); |
| stub.setMovOffset(position()); |
| |
| // jmpq *0x00000000(%rip) [c2i addr] |
| jmp(new AMD64Address(rip, 0)); |
| stub.setC2IJumpOffset(position()); |
| |
| // Call to VM runtime to resolve the call. |
| // jmpq *0x00000000(%rip) |
| stub.setResolveJumpStart(position()); |
| jmp(new AMD64Address(rip, 0)); |
| stub.setResolveJumpOffset(position()); |
| currentEndOfInstruction = position(); |
| |
| // Align to 8 bytes |
| align(8); |
| stub.setSize(position()); |
| |
| return close(true); |
| } |
| |
| @Override |
| public byte[] getPLTVirtualEntryCode(StubInformation stub) { |
| // Klass loading instruction |
| // mov 0x00000000(%rip),%rax |
| movq(rax, new AMD64Address(rip, 0)); |
| stub.setMovOffset(position()); |
| |
| // The main dispatch instruction |
| // jmpq *0x00000000(%rip) |
| jmp(new AMD64Address(rip, 0)); |
| stub.setDispatchJumpOffset(position()); |
| |
| // Call to VM runtime to resolve the call. |
| // jmpq *0x00000000(%rip) |
| stub.setResolveJumpStart(position()); |
| jmp(new AMD64Address(rip, 0)); |
| stub.setResolveJumpOffset(position()); |
| currentEndOfInstruction = position(); |
| |
| // Align to 8 bytes |
| align(8); |
| stub.setSize(position()); |
| |
| return close(true); |
| } |
| |
| } |