| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2018, Red Hat Inc. 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.aarch64; |
| |
| import jdk.tools.jaotc.StubInformation; |
| import jdk.tools.jaotc.ELFMacroAssembler; |
| |
| import org.graalvm.compiler.asm.aarch64.AArch64Address; |
| import org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler; |
| |
| |
| import jdk.vm.ci.code.TargetDescription; |
| import jdk.vm.ci.code.Register; |
| |
| import static jdk.vm.ci.aarch64.AArch64.*; |
| |
| public final class AArch64ELFMacroAssembler extends AArch64MacroAssembler implements ELFMacroAssembler { |
| |
| private int currentEndOfInstruction; |
| |
| public AArch64ELFMacroAssembler(TargetDescription target) { |
| super(target); |
| } |
| |
| @Override |
| public int currentEndOfInstruction() { |
| return currentEndOfInstruction; |
| } |
| |
| @Override |
| public byte[] getPLTJumpCode() { |
| // The main dispatch instruction |
| addressOf(r16); |
| ldr(64, r16, AArch64Address.createBaseRegisterOnlyAddress(r16)); |
| jmp(r16); |
| |
| currentEndOfInstruction = position(); |
| |
| align(8); |
| |
| return close(true); |
| } |
| |
| @Override |
| public byte[] getPLTStaticEntryCode(StubInformation stub) { |
| // The main dispatch instruction |
| addressOf(r16); |
| ldr(64, r16, AArch64Address.createBaseRegisterOnlyAddress(r16)); |
| jmp(r16); |
| stub.setDispatchJumpOffset(position()); |
| |
| // C2I stub used to call interpreter. First load r12 |
| // (i.e. rmethod) with a pointer to the Method structure ... |
| addressOf(r12); |
| ldr(64, r12, AArch64Address.createBaseRegisterOnlyAddress(r12)); |
| nop(); |
| stub.setMovOffset(position()); |
| |
| // ... then jump to the interpreter. |
| addressOf(r16); |
| ldr(64, r16, AArch64Address.createBaseRegisterOnlyAddress(r16)); |
| jmp(r16); |
| stub.setC2IJumpOffset(position()); |
| |
| // Call to VM runtime to resolve the call. |
| stub.setResolveJumpStart(position()); |
| addressOf(r16); |
| ldr(64, r16, AArch64Address.createBaseRegisterOnlyAddress(r16)); |
| jmp(r16); |
| stub.setResolveJumpOffset(position()); |
| currentEndOfInstruction = position(); |
| |
| align(8); |
| stub.setSize(position()); |
| |
| return close(true); |
| } |
| |
| @Override |
| public byte[] getPLTVirtualEntryCode(StubInformation stub) { |
| // Fixup an inline cache. |
| // Load r9 with a pointer to the Klass. |
| addressOf(r17); |
| ldr(64, r9, AArch64Address.createBaseRegisterOnlyAddress(r17)); |
| nop(); |
| stub.setMovOffset(position()); |
| |
| // Jump to the method. |
| addressOf(r16); |
| ldr(64, r16, AArch64Address.createBaseRegisterOnlyAddress(r16)); |
| jmp(r16); |
| stub.setDispatchJumpOffset(position()); |
| |
| // Call to VM runtime to resolve the call. |
| stub.setResolveJumpStart(position()); |
| addressOf(r16); |
| ldr(64, r16, AArch64Address.createBaseRegisterOnlyAddress(r16)); |
| jmp(r16); |
| stub.setResolveJumpOffset(position()); |
| currentEndOfInstruction = position(); |
| |
| align(8); |
| stub.setSize(position()); |
| |
| return close(true); |
| } |
| } |