| /* |
| * Copyright (c) 2015, 2016, 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.vm.ci.code.test.sparc; |
| |
| import jdk.vm.ci.code.CallingConvention; |
| import jdk.vm.ci.code.CodeCacheProvider; |
| import jdk.vm.ci.code.DebugInfo; |
| import jdk.vm.ci.code.Register; |
| import jdk.vm.ci.code.Register.RegisterCategory; |
| import jdk.vm.ci.code.RegisterValue; |
| import jdk.vm.ci.code.StackSlot; |
| import jdk.vm.ci.code.site.ConstantReference; |
| import jdk.vm.ci.code.site.DataSectionReference; |
| import jdk.vm.ci.code.test.TestAssembler; |
| import jdk.vm.ci.code.test.TestHotSpotVMConfig; |
| import jdk.vm.ci.hotspot.HotSpotCallingConventionType; |
| import jdk.vm.ci.hotspot.HotSpotCompiledCode; |
| import jdk.vm.ci.hotspot.HotSpotConstant; |
| import jdk.vm.ci.hotspot.HotSpotForeignCallTarget; |
| import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod; |
| import jdk.vm.ci.meta.AllocatableValue; |
| import jdk.vm.ci.meta.JavaKind; |
| import jdk.vm.ci.meta.VMConstant; |
| import jdk.vm.ci.sparc.SPARC; |
| import jdk.vm.ci.sparc.SPARCKind; |
| |
| public class SPARCTestAssembler extends TestAssembler { |
| |
| private static final int MASK13 = (1 << 13) - 1; |
| private static final Register scratchRegister = SPARC.g5; |
| private static final Register floatScratch = SPARC.f30; |
| private static final Register doubleScratch = SPARC.d62; |
| |
| public SPARCTestAssembler(CodeCacheProvider codeCache, TestHotSpotVMConfig config) { |
| super(codeCache, config, 0, 16, SPARCKind.WORD, SPARC.l0, SPARC.l1, SPARC.l2, SPARC.l3, SPARC.l4, SPARC.l5, SPARC.l6, SPARC.l7); |
| } |
| |
| private void emitOp2(Register rd, int op2, int imm22) { |
| assert isSimm(imm22, 22); |
| code.emitInt((0b00 << 30) | (rd.encoding << 25) | (op2 << 22) | imm22); |
| } |
| |
| private void emitOp3(int op, Register rd, int op3, Register rs1, Register rs2) { |
| code.emitInt((op << 30) | (rd.encoding << 25) | (op3 << 19) | (rs1.encoding << 14) | rs2.encoding); |
| } |
| |
| private void emitOp3(int op, Register rd, int op3, Register rs1, int simm13) { |
| assert isSimm(simm13, 13); |
| code.emitInt((op << 30) | (rd.encoding << 25) | (op3 << 19) | (rs1.encoding << 14) | (1 << 13) | (simm13 & MASK13)); |
| } |
| |
| private void emitNop() { |
| code.emitInt(1 << 24); |
| } |
| |
| /** |
| * Minimum value for signed immediate ranges. |
| */ |
| public static long minSimm(long nbits) { |
| return -(1L << (nbits - 1)); |
| } |
| |
| /** |
| * Maximum value for signed immediate ranges. |
| */ |
| public static long maxSimm(long nbits) { |
| return (1L << (nbits - 1)) - 1; |
| } |
| |
| /** |
| * Test if imm is within signed immediate range for nbits. |
| */ |
| public static boolean isSimm(long imm, int nbits) { |
| return minSimm(nbits) <= imm && imm <= maxSimm(nbits); |
| } |
| |
| @Override |
| public void emitPrologue() { |
| // SAVE sp, -128, sp |
| emitOp3(0b10, SPARC.sp, 0b111100, SPARC.sp, -SPARC.REGISTER_SAFE_AREA_SIZE); |
| setDeoptRescueSlot(newStackSlot(SPARCKind.XWORD)); |
| } |
| |
| @Override |
| public void emitEpilogue() { |
| recordMark(config.MARKID_DEOPT_HANDLER_ENTRY); |
| recordCall(new HotSpotForeignCallTarget(config.handleDeoptStub), 4, true, null); |
| code.emitInt(1 << 30); // CALL |
| } |
| |
| @Override |
| public HotSpotCompiledCode finish(HotSpotResolvedJavaMethod method) { |
| frameSize += SPARC.REGISTER_SAFE_AREA_SIZE; |
| return super.finish(method); |
| } |
| |
| @Override |
| public void emitGrowStack(int size) { |
| frameSize += size; |
| if (isSimm(size, 13)) { |
| emitOp3(0b10, SPARC.sp, 0b000100, SPARC.sp, size); // SUB sp, size, sp |
| } else { |
| Register r = emitLoadInt(size); |
| emitOp3(0b10, SPARC.sp, 0b000100, SPARC.sp, r); // SUB sp, size, sp |
| } |
| } |
| |
| @Override |
| public Register emitIntArg0() { |
| return codeCache.getRegisterConfig().getCallingConventionRegisters(HotSpotCallingConventionType.JavaCallee, JavaKind.Int).get(0); |
| } |
| |
| @Override |
| public Register emitIntArg1() { |
| return codeCache.getRegisterConfig().getCallingConventionRegisters(HotSpotCallingConventionType.JavaCallee, JavaKind.Int).get(1); |
| } |
| |
| @Override |
| public Register emitLoadInt(int c) { |
| Register ret = newRegister(); |
| loadIntToRegister(c, ret); |
| return ret; |
| } |
| |
| private Register loadIntToRegister(int c, Register ret) { |
| int hi = c >>> 10; |
| int lo = c & ((1 << 10) - 1); |
| if (hi == 0) { |
| emitOp3(0b10, ret, 0b000010, SPARC.g0, lo); // OR g0, lo, ret |
| } else { |
| emitOp2(ret, 0b100, hi); // SETHI hi, ret |
| if (lo != 0) { |
| emitOp3(0b10, ret, 0b000010, ret, lo); // OR ret, lo, ret |
| } |
| } |
| return ret; |
| } |
| |
| @Override |
| public Register emitLoadLong(long c) { |
| Register ret = newRegister(); |
| emitLoadLongToRegister(c, ret); |
| return ret; |
| } |
| |
| private void loadLongToRegister(long c, Register ret) { |
| DataSectionReference ref = new DataSectionReference(); |
| data.align(8); |
| ref.setOffset(data.position()); |
| data.emitLong(c); |
| emitLoadPointerToRegister(ref, ret); |
| } |
| |
| public Register emitLoadLongToRegister(long c, Register r) { |
| if ((c & 0xFFFF_FFFFL) == c) { |
| loadIntToRegister((int) c, r); |
| } else { |
| loadLongToRegister(c, r); |
| } |
| return r; |
| } |
| |
| private void emitPatchableSethi(Register ret, boolean wide) { |
| int startPos = code.position(); |
| emitOp2(ret, 0b100, 0); // SETHI 0, ret |
| if (wide) { |
| // pad for later patching |
| while (code.position() < (startPos + 28)) { |
| emitNop(); |
| } |
| } |
| } |
| |
| @Override |
| public Register emitLoadFloat(float c) { |
| return emitLoadFloat(SPARC.f0, c); |
| } |
| |
| public Register emitLoadFloat(Register reg, float c) { |
| return emitLoadFloat(reg, c, newRegister()); |
| } |
| |
| public Register emitLoadFloat(Register reg, float c, Register scratch) { |
| DataSectionReference ref = new DataSectionReference(); |
| data.align(4); |
| ref.setOffset(data.position()); |
| data.emitFloat(c); |
| |
| recordDataPatchInCode(ref); |
| emitPatchableSethi(scratch, true); |
| emitOp3(0b11, reg, 0b100000, scratch, 0); // LDF [scratch+0], f0 |
| return reg; |
| } |
| |
| public Register emitLoadDouble(Register reg, double c) { |
| return emitLoadDouble(reg, c, newRegister()); |
| } |
| |
| public Register emitLoadDouble(Register reg, double c, Register scratch) { |
| DataSectionReference ref = new DataSectionReference(); |
| data.align(8); |
| ref.setOffset(data.position()); |
| data.emitDouble(c); |
| |
| recordDataPatchInCode(ref); |
| emitPatchableSethi(scratch, true); |
| emitOp3(0b11, reg, 0b100011, scratch, 0); // LDDF [ptr+0], f0 |
| return reg; |
| } |
| |
| @Override |
| public Register emitLoadPointer(HotSpotConstant c) { |
| Register ret = newRegister(); |
| recordDataPatchInCode(new ConstantReference((VMConstant) c)); |
| |
| emitPatchableSethi(ret, !c.isCompressed()); |
| emitOp3(0b10, ret, 0b000010, ret, 0); // OR ret, 0, ret |
| |
| return ret; |
| } |
| |
| @Override |
| public Register emitLoadPointer(DataSectionReference ref) { |
| Register ret = newRegister(); |
| emitLoadPointerToRegister(ref, ret); |
| return ret; |
| } |
| |
| private void emitLoadPointerToRegister(DataSectionReference ref, Register ret) { |
| recordDataPatchInCode(ref); |
| emitPatchableSethi(ret, true); |
| emitOp3(0b11, ret, 0b001011, ret, 0); // LDX [ret+0], ret |
| } |
| |
| @Override |
| public Register emitLoadNarrowPointer(DataSectionReference ref) { |
| Register ret = newRegister(); |
| recordDataPatchInCode(ref); |
| emitPatchableSethi(ret, true); |
| emitOp3(0b11, ret, 0b000000, ret, 0); // LDUW [ret+0], ret |
| return ret; |
| } |
| |
| @Override |
| public Register emitLoadPointer(Register b, int offset) { |
| Register ret = newRegister(); |
| emitOp3(0b11, ret, 0b001011, b, offset); // LDX [b+offset], ret |
| return ret; |
| } |
| |
| @Override |
| public StackSlot emitIntToStack(Register a) { |
| StackSlot ret = newStackSlot(SPARCKind.WORD); |
| intToStack(a, ret); |
| return ret; |
| } |
| |
| public void intToStack(Register a, StackSlot ret) { |
| // STW a, [(s|f)p+offset] |
| emitStore(0b000100, a, ret); |
| } |
| |
| @Override |
| public StackSlot emitLongToStack(Register a) { |
| StackSlot ret = newStackSlot(SPARCKind.XWORD); |
| longToStack(a, ret); |
| return ret; |
| } |
| |
| public void longToStack(Register a, StackSlot ret) { |
| // STX a, [(f|s)p+offset] |
| emitStore(0b001110, a, ret); |
| } |
| |
| @Override |
| public StackSlot emitFloatToStack(Register a) { |
| StackSlot ret = newStackSlot(SPARCKind.SINGLE); |
| floatToStack(a, ret); |
| return ret; |
| } |
| |
| public void floatToStack(Register a, StackSlot ret) { |
| // STF a, [fp+offset] |
| emitStore(0b100100, a, ret); |
| } |
| |
| @Override |
| public StackSlot emitDoubleToStack(Register a) { |
| StackSlot ret = newStackSlot(SPARCKind.DOUBLE); |
| return doubleToStack(a, ret); |
| } |
| |
| public StackSlot doubleToStack(Register a, StackSlot ret) { |
| // STD a, [(s|f)p+offset] |
| emitStore(0b100111, a, ret); |
| return ret; |
| } |
| |
| @Override |
| public StackSlot emitPointerToStack(Register a) { |
| StackSlot ret = newStackSlot(SPARCKind.XWORD); |
| // STX a, [fp+offset] |
| emitStore(0b001110, a, ret); |
| return ret; |
| } |
| |
| @Override |
| public StackSlot emitNarrowPointerToStack(Register a) { |
| StackSlot ret = newStackSlot(SPARCKind.WORD); |
| // STW a, [fp+offset] |
| emitStore(0b000100, a, ret); |
| return ret; |
| } |
| |
| private void emitStore(int op3, Register a, StackSlot ret) { |
| Register base; |
| if (ret.getRawOffset() < 0) { |
| base = SPARC.fp; |
| } else { |
| base = SPARC.sp; |
| } |
| int offset = ret.getRawOffset() + SPARC.STACK_BIAS; |
| if (isSimm(offset, 13)) { |
| // op3 a, [sp+offset] |
| emitOp3(0b11, a, op3, base, offset); |
| } else { |
| assert a != SPARC.g3; |
| Register r = SPARC.g3; |
| loadLongToRegister(offset, r); |
| // op3 a, [sp+g3] |
| emitOp3(0b11, a, op3, base, r); |
| } |
| } |
| |
| @Override |
| public Register emitUncompressPointer(Register compressed, long base, int shift) { |
| Register ret; |
| if (shift > 0) { |
| ret = newRegister(); |
| emitOp3(0b10, ret, 0b100101, compressed, shift); // SLL compressed, shift, ret |
| } else { |
| ret = compressed; |
| } |
| if (base == 0) { |
| return ret; |
| } else { |
| Register b = emitLoadLong(base); |
| emitOp3(0b10, b, 0b00000, ret, b); // ADD b, ret, b |
| return b; |
| } |
| } |
| |
| @Override |
| public Register emitIntAdd(Register a, Register b) { |
| Register ret = newRegister(); |
| emitOp3(0b10, ret, 0b00000, a, b); // ADD a, b, ret |
| return ret; |
| } |
| |
| private void emitMove(Register to, Register from) { |
| if (to != from) { |
| emitOp3(0b10, to, 0b000010, from, SPARC.g0); // OR from, g0, to |
| } |
| } |
| |
| @Override |
| public void emitIntRet(Register a) { |
| emitPointerRet(a); |
| } |
| |
| @Override |
| public void emitFloatRet(Register a) { |
| assert a == SPARC.f0 : "Unimplemented"; |
| emitOp3(0b10, SPARC.g0, 0b111000, SPARC.i7, 8); // JMPL [i7+8], g0 |
| emitOp3(0b10, SPARC.g0, 0b111101, SPARC.g0, SPARC.g0); // RESTORE g0, g0, g0 |
| } |
| |
| @Override |
| public void emitPointerRet(Register a) { |
| emitMove(SPARC.i0, a); |
| emitOp3(0b10, SPARC.g0, 0b111000, SPARC.i7, 8); // JMPL [i7+8], g0 |
| emitOp3(0b10, SPARC.g0, 0b111101, SPARC.g0, SPARC.g0); // RESTORE g0, g0, g0 |
| } |
| |
| @Override |
| public void emitTrap(DebugInfo info) { |
| recordImplicitException(info); |
| emitOp3(0b11, SPARC.g0, 0b001011, SPARC.g0, 0); // LDX [g0+0], g0 |
| } |
| |
| @Override |
| public DataSectionReference emitDataItem(HotSpotConstant c) { |
| if (c.isCompressed()) { |
| data.align(4); |
| } else { |
| data.align(8); |
| } |
| return super.emitDataItem(c); |
| } |
| |
| @Override |
| public void emitCall(long addr) { |
| Register dst = emitLoadLong(addr); |
| emitOp3(0b10, SPARC.o7, 0b111000, dst, 0); // JMPL [dst+0], o7 |
| emitNop(); |
| } |
| |
| @Override |
| public void emitLoad(AllocatableValue av, Object prim) { |
| if (av instanceof RegisterValue) { |
| Register reg = ((RegisterValue) av).getRegister(); |
| RegisterCategory cat = reg.getRegisterCategory(); |
| if (cat.equals(SPARC.FPUs)) { |
| emitLoadFloat(reg, (Float) prim, scratchRegister); |
| } else if (cat.equals(SPARC.FPUd)) { |
| emitLoadDouble(reg, (Double) prim, scratchRegister); |
| } else if (prim instanceof Integer) { |
| loadIntToRegister((Integer) prim, reg); |
| } else if (prim instanceof Long) { |
| loadLongToRegister((Long) prim, reg); |
| } |
| } else if (av instanceof StackSlot) { |
| StackSlot slot = (StackSlot) av; |
| if (prim instanceof Float) { |
| floatToStack(emitLoadFloat(floatScratch, (Float) prim, scratchRegister), slot); |
| } else if (prim instanceof Double) { |
| doubleToStack(emitLoadDouble(doubleScratch, (Double) prim, scratchRegister), slot); |
| } else if (prim instanceof Integer) { |
| intToStack(loadIntToRegister((Integer) prim, scratchRegister), slot); |
| } else if (prim instanceof Long) { |
| longToStack(emitLoadLongToRegister((Long) prim, scratchRegister), slot); |
| } |
| } else { |
| throw new IllegalArgumentException("Unknown value " + av); |
| } |
| } |
| |
| @Override |
| public void emitCallEpilogue(CallingConvention cc) { |
| // Nothing to do here. |
| } |
| |
| @Override |
| public void emitCallPrologue(CallingConvention cc, Object... prim) { |
| emitGrowStack(cc.getStackSize()); |
| frameSize += cc.getStackSize(); |
| AllocatableValue[] args = cc.getArguments(); |
| for (int i = 0; i < args.length; i++) { |
| emitLoad(args[i], prim[i]); |
| } |
| } |
| |
| } |
