| /* |
| * Copyright (c) 2012, 2015, 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 org.graalvm.compiler.lir.sparc; |
| |
| import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG; |
| import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.STACK; |
| |
| import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler; |
| import org.graalvm.compiler.lir.LIRInstructionClass; |
| import org.graalvm.compiler.lir.Opcode; |
| import org.graalvm.compiler.lir.asm.CompilationResultBuilder; |
| |
| import jdk.vm.ci.meta.Value; |
| |
| /** |
| * Emits a breakpoint. |
| */ |
| @Opcode("BREAKPOINT") |
| public final class SPARCBreakpointOp extends SPARCLIRInstruction { |
| public static final LIRInstructionClass<SPARCBreakpointOp> TYPE = LIRInstructionClass.create(SPARCBreakpointOp.class); |
| public static final SizeEstimate SIZE = SizeEstimate.create(1); |
| |
| // historical - from hotspot src/cpu/sparc/vm |
| // <sys/trap.h> promises that the system will not use traps 16-31 |
| // We want to use ST_BREAKPOINT here, but the debugger is confused by it. |
| public static final int ST_RESERVED_FOR_USER_0 = 0x10; |
| |
| /** |
| * A set of values loaded into the Java ABI parameter locations (for inspection by a debugger). |
| */ |
| @Use({REG, STACK}) protected Value[] parameters; |
| |
| public SPARCBreakpointOp(Value[] parameters) { |
| super(TYPE, SIZE); |
| this.parameters = parameters; |
| } |
| |
| @Override |
| public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) { |
| masm.ta(ST_RESERVED_FOR_USER_0); |
| } |
| } |