| /* |
| * [The "BSD licence"] |
| * Copyright (c) 2010 Ben Gruver (JesusFreke) |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package org.jf.baksmali.Adaptors; |
| |
| import org.jf.baksmali.baksmaliOptions; |
| import org.jf.util.IndentingWriter; |
| |
| import javax.annotation.Nonnull; |
| import java.io.IOException; |
| |
| /** |
| * This class contains the logic used for formatting registers |
| */ |
| public class RegisterFormatter { |
| @Nonnull public final baksmaliOptions options; |
| public final int registerCount; |
| public final int parameterRegisterCount; |
| |
| public RegisterFormatter(@Nonnull baksmaliOptions options, int registerCount, int parameterRegisterCount) { |
| this.options = options; |
| this.registerCount = registerCount; |
| this.parameterRegisterCount = parameterRegisterCount; |
| } |
| |
| /** |
| * Write out the register range value used by Format3rc. If baksmali.noParameterRegisters is true, it will always |
| * output the registers in the v<n> format. But if false, then it will check if *both* registers are parameter |
| * registers, and if so, use the p<n> format for both. If only the last register is a parameter register, it will |
| * use the v<n> format for both, otherwise it would be confusing to have something like {v20 .. p1} |
| * @param writer the <code>IndentingWriter</code> to write to |
| * @param startRegister the first register in the range |
| * @param lastRegister the last register in the range |
| */ |
| public void writeRegisterRange(IndentingWriter writer, int startRegister, int lastRegister) throws IOException { |
| if (!options.noParameterRegisters) { |
| assert startRegister <= lastRegister; |
| |
| if (startRegister >= registerCount - parameterRegisterCount) { |
| writer.write("{p"); |
| writer.printSignedIntAsDec(startRegister - (registerCount - parameterRegisterCount)); |
| writer.write(" .. p"); |
| writer.printSignedIntAsDec(lastRegister - (registerCount - parameterRegisterCount)); |
| writer.write('}'); |
| return; |
| } |
| } |
| writer.write("{v"); |
| writer.printSignedIntAsDec(startRegister); |
| writer.write(" .. v"); |
| writer.printSignedIntAsDec(lastRegister); |
| writer.write('}'); |
| } |
| |
| /** |
| * Writes a register with the appropriate format. If baksmali.noParameterRegisters is true, then it will always |
| * output a register in the v<n> format. If false, then it determines if the register is a parameter register, |
| * and if so, formats it in the p<n> format instead. |
| * |
| * @param writer the <code>IndentingWriter</code> to write to |
| * @param register the register number |
| */ |
| public void writeTo(IndentingWriter writer, int register) throws IOException { |
| if (!options.noParameterRegisters) { |
| if (register >= registerCount - parameterRegisterCount) { |
| writer.write('p'); |
| writer.printSignedIntAsDec((register - (registerCount - parameterRegisterCount))); |
| return; |
| } |
| } |
| writer.write('v'); |
| writer.printSignedIntAsDec(register); |
| } |
| } |