288 lines
9.8 KiB
Java
288 lines
9.8 KiB
Java
/*
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* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package compiler.jvmci.code.amd64;
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import jdk.vm.ci.amd64.AMD64;
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import jdk.vm.ci.amd64.AMD64Kind;
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import jdk.vm.ci.code.CodeCacheProvider;
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import jdk.vm.ci.code.DebugInfo;
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import jdk.vm.ci.code.Register;
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import jdk.vm.ci.code.StackSlot;
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import jdk.vm.ci.code.site.ConstantReference;
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import jdk.vm.ci.code.site.DataSectionReference;
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import jdk.vm.ci.hotspot.HotSpotCallingConventionType;
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import jdk.vm.ci.hotspot.HotSpotConstant;
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import jdk.vm.ci.hotspot.HotSpotForeignCallTarget;
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import jdk.vm.ci.hotspot.HotSpotVMConfig;
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import jdk.vm.ci.meta.JavaKind;
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import jdk.vm.ci.meta.LIRKind;
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import jdk.vm.ci.meta.VMConstant;
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import compiler.jvmci.code.TestAssembler;
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public class AMD64TestAssembler extends TestAssembler {
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public AMD64TestAssembler(CodeCacheProvider codeCache) {
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super(codeCache, 16, 16, AMD64Kind.DWORD, AMD64.rax, AMD64.rcx, AMD64.rdi, AMD64.r8, AMD64.r9, AMD64.r10);
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}
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private void emitFatNop() {
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// 5 byte NOP:
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// NOP DWORD ptr [EAX + EAX*1 + 00H]
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code.emitByte(0x0F);
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code.emitByte(0x1F);
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code.emitByte(0x44);
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code.emitByte(0x00);
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code.emitByte(0x00);
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}
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@Override
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public void emitPrologue() {
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// WARNING: Initial instruction MUST be 5 bytes or longer so that
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// NativeJump::patch_verified_entry will be able to patch out the entry
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// code safely.
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emitFatNop();
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code.emitByte(0x50 | AMD64.rbp.encoding); // PUSH rbp
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emitMove(true, AMD64.rbp, AMD64.rsp); // MOV rbp, rsp
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setDeoptRescueSlot(newStackSlot(LIRKind.value(AMD64Kind.QWORD)));
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}
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@Override
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public void emitEpilogue() {
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HotSpotVMConfig config = HotSpotVMConfig.config();
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recordMark(config.MARKID_DEOPT_HANDLER_ENTRY);
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recordCall(new HotSpotForeignCallTarget(config.handleDeoptStub), 5, true, null);
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code.emitByte(0xE8); // CALL rel32
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code.emitInt(0xDEADDEAD);
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}
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@Override
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public void emitGrowStack(int size) {
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// SUB rsp, size
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code.emitByte(0x48);
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code.emitByte(0x81);
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code.emitByte(0xEC);
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code.emitInt(size);
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}
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@Override
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public Register emitIntArg0() {
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return codeCache.getRegisterConfig().getCallingConventionRegisters(HotSpotCallingConventionType.JavaCall, JavaKind.Int)[0];
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}
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@Override
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public Register emitIntArg1() {
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return codeCache.getRegisterConfig().getCallingConventionRegisters(HotSpotCallingConventionType.JavaCall, JavaKind.Int)[1];
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}
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private void emitREX(boolean w, int r, int x, int b) {
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int wrxb = (w ? 0x08 : 0) | ((r >> 3) << 2) | ((x >> 3) << 1) | (b >> 3);
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if (wrxb != 0) {
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code.emitByte(0x40 | wrxb);
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}
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}
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private void emitModRMReg(boolean w, int opcode, int r, int m) {
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emitREX(w, r, 0, m);
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code.emitByte((byte) opcode);
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code.emitByte((byte) 0xC0 | ((r & 0x7) << 3) | (m & 0x7));
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}
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private void emitModRMMemory(boolean w, int opcode, int r, int b, int offset) {
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emitREX(w, r, 0, b);
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code.emitByte((byte) opcode);
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code.emitByte((byte) 0x80 | ((r & 0x7) << 3) | (b & 0x7));
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code.emitInt(offset);
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}
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@Override
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public Register emitLoadInt(int c) {
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Register ret = newRegister();
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emitREX(false, 0, 0, ret.encoding);
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code.emitByte(0xB8 | (ret.encoding & 0x7)); // MOV r32, imm32
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code.emitInt(c);
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return ret;
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}
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@Override
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public Register emitLoadLong(long c) {
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Register ret = newRegister();
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emitREX(true, 0, 0, ret.encoding);
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code.emitByte(0xB8 | (ret.encoding & 0x7)); // MOV r64, imm64
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code.emitLong(c);
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return ret;
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}
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@Override
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public Register emitLoadFloat(float c) {
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DataSectionReference ref = new DataSectionReference();
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ref.setOffset(data.position());
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data.emitFloat(c);
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recordDataPatchInCode(ref);
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Register ret = AMD64.xmm0;
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emitREX(false, ret.encoding, 0, 0);
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code.emitByte(0xF3);
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code.emitByte(0x0F);
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code.emitByte(0x10); // MOVSS xmm1, xmm2/m32
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code.emitByte(0x05 | ((ret.encoding & 0x7) << 3)); // xmm, [rip+offset]
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code.emitInt(0xDEADDEAD);
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return ret;
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}
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@Override
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public Register emitLoadPointer(HotSpotConstant c) {
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recordDataPatchInCode(new ConstantReference((VMConstant) c));
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if (c.isCompressed()) {
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Register ret = newRegister();
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emitREX(false, 0, 0, ret.encoding);
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code.emitByte(0xB8 | (ret.encoding & 0x7)); // MOV r32, imm32
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code.emitInt(0xDEADDEAD);
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return ret;
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} else {
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return emitLoadLong(0xDEADDEADDEADDEADl);
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}
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}
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private Register emitLoadPointer(DataSectionReference ref, boolean narrow) {
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recordDataPatchInCode(ref);
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Register ret = newRegister();
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emitREX(!narrow, ret.encoding, 0, 0);
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code.emitByte(0x8B); // MOV r64,r/m64
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code.emitByte(0x05 | ((ret.encoding & 0x7) << 3)); // r64, [rip+offset]
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code.emitInt(0xDEADDEAD);
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return ret;
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}
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@Override
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public Register emitLoadPointer(DataSectionReference ref) {
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return emitLoadPointer(ref, false);
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}
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@Override
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public Register emitLoadNarrowPointer(DataSectionReference ref) {
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return emitLoadPointer(ref, true);
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}
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@Override
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public Register emitLoadPointer(Register b, int offset) {
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Register ret = newRegister();
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emitModRMMemory(true, 0x8B, ret.encoding, b.encoding, offset); // MOV r64,r/m64
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return ret;
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}
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@Override
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public StackSlot emitIntToStack(Register a) {
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StackSlot ret = newStackSlot(LIRKind.value(AMD64Kind.DWORD));
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emitModRMMemory(false, 0x89, a.encoding, AMD64.rbp.encoding, ret.getRawOffset() + 16); // MOV r/m32,r32
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return ret;
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}
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@Override
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public StackSlot emitLongToStack(Register a) {
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StackSlot ret = newStackSlot(LIRKind.value(AMD64Kind.QWORD));
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emitModRMMemory(true, 0x89, a.encoding, AMD64.rbp.encoding, ret.getRawOffset() + 16); // MOV r/m64,r64
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return ret;
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}
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@Override
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public StackSlot emitFloatToStack(Register a) {
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StackSlot ret = newStackSlot(LIRKind.value(AMD64Kind.SINGLE));
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emitREX(false, a.encoding, 0, 0);
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code.emitByte(0xF3);
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code.emitByte(0x0F);
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code.emitByte(0x11); // MOVSS xmm2/m32, xmm1
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code.emitByte(0x85 | ((a.encoding & 0x7) << 3)); // [rbp+offset]
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code.emitInt(ret.getRawOffset() + 16);
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return ret;
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}
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@Override
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public StackSlot emitPointerToStack(Register a) {
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StackSlot ret = newStackSlot(LIRKind.reference(AMD64Kind.QWORD));
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emitModRMMemory(true, 0x89, a.encoding, AMD64.rbp.encoding, ret.getRawOffset() + 16); // MOV r/m64,r64
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return ret;
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}
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@Override
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public StackSlot emitNarrowPointerToStack(Register a) {
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StackSlot ret = newStackSlot(LIRKind.reference(AMD64Kind.DWORD));
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emitModRMMemory(false, 0x89, a.encoding, AMD64.rbp.encoding, ret.getRawOffset() + 16); // MOV r/m32,r32
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return ret;
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}
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@Override
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public Register emitUncompressPointer(Register compressed, long base, int shift) {
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if (shift > 0) {
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emitModRMReg(true, 0xC1, 4, compressed.encoding);
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code.emitByte(shift);
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}
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if (base == 0) {
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return compressed;
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} else {
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Register tmp = emitLoadLong(base);
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emitModRMReg(true, 0x03, tmp.encoding, compressed.encoding);
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return tmp;
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}
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}
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@Override
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public Register emitIntAdd(Register a, Register b) {
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emitModRMReg(false, 0x03, a.encoding, b.encoding);
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return a;
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}
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private void emitMove(boolean w, Register to, Register from) {
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if (to != from) {
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emitModRMReg(w, 0x8B, to.encoding, from.encoding);
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}
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}
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@Override
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public void emitIntRet(Register a) {
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emitMove(false, AMD64.rax, a); // MOV eax, ...
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emitMove(true, AMD64.rsp, AMD64.rbp); // MOV rsp, rbp
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code.emitByte(0x58 | AMD64.rbp.encoding); // POP rbp
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code.emitByte(0xC3); // RET
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}
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@Override
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public void emitPointerRet(Register a) {
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emitMove(true, AMD64.rax, a); // MOV rax, ...
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emitMove(true, AMD64.rsp, AMD64.rbp); // MOV rsp, rbp
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code.emitByte(0x58 | AMD64.rbp.encoding); // POP rbp
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code.emitByte(0xC3); // RET
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}
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@Override
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public void emitTrap(DebugInfo info) {
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recordImplicitException(info);
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// MOV rax, [0]
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code.emitByte(0x8B);
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code.emitByte(0x04);
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code.emitByte(0x25);
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code.emitInt(0);
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}
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}
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