author | never |
Wed, 22 Jun 2016 22:39:32 +0000 | |
changeset 39441 | 7464b1552bf7 |
parent 39423 | 0f8dc3693499 |
child 39443 | ca6dfb34e46c |
permissions | -rw-r--r-- |
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/* |
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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 jdk.vm.ci.code.test.sparc; |
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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.code.test.TestAssembler; |
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import jdk.vm.ci.code.test.TestHotSpotVMConfig; |
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import jdk.vm.ci.hotspot.HotSpotCallingConventionType; |
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import jdk.vm.ci.hotspot.HotSpotCompiledCode; |
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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.HotSpotResolvedJavaMethod; |
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import jdk.vm.ci.meta.JavaKind; |
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import jdk.vm.ci.meta.VMConstant; |
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import jdk.vm.ci.sparc.SPARC; |
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import jdk.vm.ci.sparc.SPARCKind; |
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public class SPARCTestAssembler extends TestAssembler { |
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private static final int MASK13 = (1 << 13) - 1; |
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public SPARCTestAssembler(CodeCacheProvider codeCache, TestHotSpotVMConfig config) { |
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super(codeCache, config, 0, 16, SPARCKind.WORD, SPARC.l0, SPARC.l1, SPARC.l2, SPARC.l3, SPARC.l4, SPARC.l5, SPARC.l6, SPARC.l7); |
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} |
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private void emitOp2(Register rd, int op2, int imm22) { |
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assert isSimm(imm22, 22); |
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code.emitInt((0b00 << 30) | (rd.encoding << 25) | (op2 << 22) | imm22); |
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} |
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private void emitOp3(int op, Register rd, int op3, Register rs1, Register rs2) { |
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code.emitInt((op << 30) | (rd.encoding << 25) | (op3 << 19) | (rs1.encoding << 14) | rs2.encoding); |
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} |
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private void emitOp3(int op, Register rd, int op3, Register rs1, int simm13) { |
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assert isSimm(simm13, 13); |
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code.emitInt((op << 30) | (rd.encoding << 25) | (op3 << 19) | (rs1.encoding << 14) | (1 << 13) | (simm13 & MASK13)); |
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} |
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private void emitNop() { |
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code.emitInt(1 << 24); |
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} |
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/** |
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* Minimum value for signed immediate ranges. |
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*/ |
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public static long minSimm(long nbits) { |
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return -(1L << (nbits - 1)); |
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} |
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/** |
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* Maximum value for signed immediate ranges. |
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*/ |
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public static long maxSimm(long nbits) { |
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return (1L << (nbits - 1)) - 1; |
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} |
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/** |
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* Test if imm is within signed immediate range for nbits. |
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*/ |
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public static boolean isSimm(long imm, int nbits) { |
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return minSimm(nbits) <= imm && imm <= maxSimm(nbits); |
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} |
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@Override |
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public void emitPrologue() { |
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// SAVE sp, -128, sp |
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emitOp3(0b10, SPARC.sp, 0b111100, SPARC.sp, -SPARC.REGISTER_SAFE_AREA_SIZE); |
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setDeoptRescueSlot(newStackSlot(SPARCKind.XWORD)); |
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} |
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@Override |
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public void emitEpilogue() { |
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recordMark(config.MARKID_DEOPT_HANDLER_ENTRY); |
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recordCall(new HotSpotForeignCallTarget(config.handleDeoptStub), 4, true, null); |
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code.emitInt(1 << 30); // CALL |
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} |
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@Override |
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public HotSpotCompiledCode finish(HotSpotResolvedJavaMethod method) { |
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frameSize += SPARC.REGISTER_SAFE_AREA_SIZE; |
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return super.finish(method); |
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} |
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@Override |
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public void emitGrowStack(int size) { |
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frameSize += size; |
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if (isSimm(size, 13)) { |
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emitOp3(0b10, SPARC.sp, 0b000100, SPARC.sp, size); // SUB sp, size, sp |
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} else { |
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Register r = emitLoadInt(size); |
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emitOp3(0b10, SPARC.sp, 0b000100, SPARC.sp, r); // SUB sp, size, sp |
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} |
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} |
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121 |
|
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122 |
@Override |
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public Register emitIntArg0() { |
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return codeCache.getRegisterConfig().getCallingConventionRegisters(HotSpotCallingConventionType.JavaCallee, JavaKind.Int)[0]; |
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} |
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126 |
|
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127 |
@Override |
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public Register emitIntArg1() { |
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return codeCache.getRegisterConfig().getCallingConventionRegisters(HotSpotCallingConventionType.JavaCallee, JavaKind.Int)[1]; |
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} |
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131 |
|
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132 |
@Override |
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public Register emitLoadInt(int c) { |
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Register ret = newRegister(); |
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loadIntToRegister(c, ret); |
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return ret; |
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} |
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138 |
|
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139 |
private void loadIntToRegister(int c, Register ret) { |
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int hi = c >>> 10; |
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int lo = c & ((1 << 10) - 1); |
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if (hi == 0) { |
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emitOp3(0b10, ret, 0b000010, SPARC.g0, lo); // OR g0, lo, ret |
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} else { |
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emitOp2(ret, 0b100, hi); // SETHI hi, ret |
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if (lo != 0) { |
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emitOp3(0b10, ret, 0b000010, ret, lo); // OR ret, lo, ret |
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} |
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} |
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} |
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151 |
|
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152 |
@Override |
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public Register emitLoadLong(long c) { |
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Register ret = newRegister(); |
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155 |
emitLoadLongToRegister(c, ret); |
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return ret; |
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157 |
} |
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158 |
|
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159 |
private void loadLongToRegister(long c, Register ret) { |
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160 |
DataSectionReference ref = new DataSectionReference(); |
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data.align(8); |
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ref.setOffset(data.position()); |
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163 |
data.emitLong(c); |
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164 |
emitLoadPointerToRegister(ref, ret); |
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165 |
} |
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166 |
|
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167 |
public void emitLoadLongToRegister(long c, Register r) { |
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168 |
if ((c & 0xFFFF_FFFFL) == c) { |
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169 |
loadIntToRegister((int) c, r); |
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170 |
} else { |
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171 |
loadLongToRegister(c, r); |
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} |
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173 |
} |
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174 |
|
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175 |
private void emitPatchableSethi(Register ret, boolean wide) { |
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176 |
int startPos = code.position(); |
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177 |
emitOp2(ret, 0b100, 0); // SETHI 0, ret |
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if (wide) { |
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// pad for later patching |
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180 |
while (code.position() < (startPos + 28)) { |
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181 |
emitNop(); |
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182 |
} |
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183 |
} |
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184 |
} |
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185 |
|
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186 |
@Override |
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187 |
public Register emitLoadFloat(float c) { |
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188 |
DataSectionReference ref = new DataSectionReference(); |
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189 |
data.align(4); |
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190 |
ref.setOffset(data.position()); |
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191 |
data.emitFloat(c); |
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192 |
|
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193 |
Register ptr = newRegister(); |
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194 |
recordDataPatchInCode(ref); |
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195 |
emitPatchableSethi(ptr, true); |
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196 |
emitOp3(0b11, SPARC.f0, 0b100000, ptr, 0); // LDF [ptr+0], f0 |
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197 |
return SPARC.f0; |
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198 |
} |
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199 |
|
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200 |
@Override |
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201 |
public Register emitLoadPointer(HotSpotConstant c) { |
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202 |
Register ret = newRegister(); |
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203 |
recordDataPatchInCode(new ConstantReference((VMConstant) c)); |
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204 |
|
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205 |
emitPatchableSethi(ret, !c.isCompressed()); |
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206 |
emitOp3(0b10, ret, 0b000010, ret, 0); // OR ret, 0, ret |
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207 |
|
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208 |
return ret; |
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209 |
} |
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210 |
|
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211 |
@Override |
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212 |
public Register emitLoadPointer(DataSectionReference ref) { |
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213 |
Register ret = newRegister(); |
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214 |
emitLoadPointerToRegister(ref, ret); |
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215 |
return ret; |
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216 |
} |
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217 |
|
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218 |
private void emitLoadPointerToRegister(DataSectionReference ref, Register ret) { |
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219 |
recordDataPatchInCode(ref); |
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220 |
emitPatchableSethi(ret, true); |
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221 |
emitOp3(0b11, ret, 0b001011, ret, 0); // LDX [ret+0], ret |
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222 |
} |
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223 |
|
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224 |
@Override |
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225 |
public Register emitLoadNarrowPointer(DataSectionReference ref) { |
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226 |
Register ret = newRegister(); |
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227 |
recordDataPatchInCode(ref); |
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228 |
emitPatchableSethi(ret, true); |
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229 |
emitOp3(0b11, ret, 0b000000, ret, 0); // LDUW [ret+0], ret |
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230 |
return ret; |
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231 |
} |
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232 |
|
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233 |
@Override |
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234 |
public Register emitLoadPointer(Register b, int offset) { |
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235 |
Register ret = newRegister(); |
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236 |
emitOp3(0b11, ret, 0b001011, b, offset); // LDX [b+offset], ret |
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237 |
return ret; |
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238 |
} |
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239 |
|
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240 |
@Override |
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241 |
public StackSlot emitIntToStack(Register a) { |
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StackSlot ret = newStackSlot(SPARCKind.WORD); |
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// STW a, [fp+offset] |
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emitStore(0b000100, a, ret); |
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return ret; |
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} |
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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(SPARCKind.XWORD); |
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// STX a, [sp+offset] |
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emitStore(0b001110, a, ret); |
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return ret; |
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} |
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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(SPARCKind.SINGLE); |
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// STF a, [fp+offset] |
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emitStore(0b100100, a, ret); |
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return ret; |
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} |
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263 |
|
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264 |
@Override |
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public StackSlot emitPointerToStack(Register a) { |
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StackSlot ret = newStackSlot(SPARCKind.XWORD); |
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// STX a, [fp+offset] |
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emitStore(0b001110, a, ret); |
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return ret; |
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} |
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|
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272 |
@Override |
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public StackSlot emitNarrowPointerToStack(Register a) { |
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StackSlot ret = newStackSlot(SPARCKind.WORD); |
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// STW a, [fp+offset] |
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emitStore(0b000100, a, ret); |
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return ret; |
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} |
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|
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private void emitStore(int op3, Register a, StackSlot ret) { |
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int offset = ret.getRawOffset() + SPARC.STACK_BIAS; |
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if (isSimm(offset, 13)) { |
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// op3 a, [sp+offset] |
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emitOp3(0b11, a, op3, SPARC.fp, offset); |
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} else { |
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assert a != SPARC.g3; |
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Register r = SPARC.g3; |
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loadLongToRegister(offset, r); |
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// op3 a, [sp+g3] |
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emitOp3(0b11, a, op3, SPARC.fp, r); |
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} |
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} |
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|
293 |
|
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294 |
@Override |
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public Register emitUncompressPointer(Register compressed, long base, int shift) { |
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Register ret; |
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if (shift > 0) { |
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ret = newRegister(); |
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emitOp3(0b10, ret, 0b100101, compressed, shift); // SLL compressed, shift, ret |
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} else { |
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ret = compressed; |
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} |
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|
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if (base == 0) { |
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return ret; |
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|
305 |
} else { |
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Register b = emitLoadLong(base); |
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emitOp3(0b10, b, 0b00000, ret, b); // ADD b, ret, b |
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return b; |
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|
309 |
} |
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} |
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311 |
|
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312 |
@Override |
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public Register emitIntAdd(Register a, Register b) { |
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Register ret = newRegister(); |
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emitOp3(0b10, ret, 0b00000, a, b); // ADD a, b, ret |
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|
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return ret; |
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|
317 |
} |
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318 |
|
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319 |
private void emitMove(Register to, Register from) { |
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if (to != from) { |
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emitOp3(0b10, to, 0b000010, from, SPARC.g0); // OR from, g0, to |
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} |
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|
323 |
} |
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|
324 |
|
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325 |
@Override |
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326 |
public void emitIntRet(Register a) { |
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|
327 |
emitPointerRet(a); |
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328 |
} |
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|
329 |
|
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|
330 |
@Override |
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331 |
public void emitPointerRet(Register a) { |
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332 |
emitMove(SPARC.i0, a); |
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333 |
emitOp3(0b10, SPARC.g0, 0b111000, SPARC.i7, 8); // JMPL [i7+8], g0 |
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334 |
emitOp3(0b10, SPARC.g0, 0b111101, SPARC.g0, SPARC.g0); // RESTORE g0, g0, g0 |
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335 |
} |
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|
336 |
|
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337 |
@Override |
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338 |
public void emitTrap(DebugInfo info) { |
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339 |
recordImplicitException(info); |
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340 |
emitOp3(0b11, SPARC.g0, 0b001011, SPARC.g0, 0); // LDX [g0+0], g0 |
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341 |
} |
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342 |
|
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343 |
@Override |
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344 |
public DataSectionReference emitDataItem(HotSpotConstant c) { |
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345 |
if (c.isCompressed()) { |
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346 |
data.align(4); |
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347 |
} else { |
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348 |
data.align(8); |
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349 |
} |
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350 |
return super.emitDataItem(c); |
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351 |
} |
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352 |
} |