11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 package org.graalvm.compiler.hotspot.aarch64;
  24 
  25 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG;
  26 import static jdk.vm.ci.aarch64.AArch64.sp;
  27 import static jdk.vm.ci.code.ValueUtil.asRegister;
  28 
  29 import org.graalvm.compiler.asm.aarch64.AArch64Address;
  30 import org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler;
  31 import org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler.AArch64ExceptionCode;
  32 import org.graalvm.compiler.lir.LIRInstructionClass;
  33 import org.graalvm.compiler.lir.Opcode;
  34 import org.graalvm.compiler.lir.aarch64.AArch64LIRInstruction;
  35 import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
  36 
  37 import jdk.vm.ci.meta.AllocatableValue;
  38 
  39 /**
  40  * Patch the return address of the current frame.
  41  */
  42 @Opcode("PATCH_RETURN")
  43 final class AArch64HotSpotPatchReturnAddressOp extends AArch64LIRInstruction {
  44 
  45     public static final LIRInstructionClass<AArch64HotSpotPatchReturnAddressOp> TYPE = LIRInstructionClass.create(AArch64HotSpotPatchReturnAddressOp.class);
  46 
  47     @Use(REG) AllocatableValue address;
  48 
  49     AArch64HotSpotPatchReturnAddressOp(AllocatableValue address) {
  50         super(TYPE);
  51         this.address = address;
  52     }
  53 
  54     @Override
  55     public void emitCode(CompilationResultBuilder crb, AArch64MacroAssembler masm) {
  56         final int frameSize = crb.frameMap.frameSize();
  57         // XXX where is lr exactly?
  58         AArch64Address lrAddress = AArch64Address.createUnscaledImmediateAddress(sp, frameSize);
  59         masm.brk(AArch64ExceptionCode.BREAKPOINT); // XXX
  60         masm.str(64, asRegister(address), lrAddress);
  61     }
  62 }

  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 package org.graalvm.compiler.hotspot.aarch64;
  24 
  25 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG;
  26 import static jdk.vm.ci.aarch64.AArch64.sp;
  27 import static jdk.vm.ci.code.ValueUtil.asRegister;
  28 
  29 import org.graalvm.compiler.asm.aarch64.AArch64Address;
  30 import org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler;

  31 import org.graalvm.compiler.lir.LIRInstructionClass;
  32 import org.graalvm.compiler.lir.Opcode;
  33 import org.graalvm.compiler.lir.aarch64.AArch64LIRInstruction;
  34 import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
  35 
  36 import jdk.vm.ci.meta.AllocatableValue;
  37 
  38 /**
  39  * Patch the return address of the current frame.
  40  */
  41 @Opcode("PATCH_RETURN")
  42 final class AArch64HotSpotPatchReturnAddressOp extends AArch64LIRInstruction {
  43 
  44     public static final LIRInstructionClass<AArch64HotSpotPatchReturnAddressOp> TYPE = LIRInstructionClass.create(AArch64HotSpotPatchReturnAddressOp.class);
  45 
  46     @Use(REG) AllocatableValue address;
  47 
  48     AArch64HotSpotPatchReturnAddressOp(AllocatableValue address) {
  49         super(TYPE);
  50         this.address = address;
  51     }
  52 
  53     @Override
  54     public void emitCode(CompilationResultBuilder crb, AArch64MacroAssembler masm) {
  55         final int frameSize = crb.frameMap.frameSize();
  56         // LR is saved in the {fp, lr} pair above the frame
  57         AArch64Address lrAddress = AArch64Address.createUnscaledImmediateAddress(sp,
  58                         frameSize + crb.target.wordSize);
  59         masm.str(64, asRegister(address), lrAddress);
  60     }
  61 }