| /******************************************************************************* |
| * Copyright (c) 2000, 2015 QNX Software Systems and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * QNX Software Systems - Initial API and implementation |
| * Ericsson - Adapted for DSF |
| * Dmitry Kozlov (Mentor Graphics) - Add tab symbols parsing (Bug 391115) |
| * William Riley (Renesas) - Add raw Opcode parsing (Bug 357270) |
| *******************************************************************************/ |
| |
| package org.eclipse.cdt.dsf.mi.service.command.output; |
| |
| import java.math.BigInteger; |
| |
| import org.eclipse.cdt.dsf.debug.service.AbstractInstruction; |
| |
| public class MIInstruction extends AbstractInstruction { |
| |
| // The parsed information |
| BigInteger address; |
| String function = ""; //$NON-NLS-1$ |
| long offset; |
| String opcode = ""; //$NON-NLS-1$ |
| String args = ""; //$NON-NLS-1$ |
| BigInteger rawOpcodes = null; |
| Integer opcodeSize = null; |
| |
| public MIInstruction(MITuple tuple) { |
| parse(tuple); |
| } |
| |
| @Override |
| public BigInteger getAdress() { |
| return address; |
| } |
| |
| @Override |
| public String getFuntionName() { |
| return function; |
| } |
| |
| @Override |
| public long getOffset() { |
| return offset; |
| } |
| |
| @Override |
| public String getInstruction() { |
| return opcode + "\t" + args; //$NON-NLS-1$; |
| } |
| |
| @Override |
| public String getOpcode() { |
| return opcode; |
| } |
| |
| @Override |
| public String getArgs() { |
| return args; |
| } |
| |
| @Override |
| public BigInteger getRawOpcodes() { |
| return rawOpcodes; |
| } |
| |
| /** |
| * Parse the assembly instruction result. Each instruction has the following |
| * fields: |
| * - Address |
| * - Function name |
| * - Offset |
| * - Instruction |
| * |
| * {address="0x000107c0",func-name="main",offset="4",inst="mov 2, %o0"}, |
| * {address="0x000107c4",func-name="main",offset="8",inst="sethi %hi(0x11800), %o2"}, |
| * ..., |
| * {address="0x00010820",func-name="main",offset="100",inst="restore "} |
| * |
| * An instruction may also contain: |
| * - Opcode bytes |
| * |
| * {address="0x004016b9",func-name="main",offset="9",opcodes="e8 a2 05 00 00", |
| * inst="call 0x401c60 <__main>"}, |
| * ..., |
| * |
| * In addition, the opcode and arguments are extracted form the assembly instruction. |
| */ |
| private void parse(MITuple tuple) { |
| MIResult[] results = tuple.getMIResults(); |
| for (int i = 0; i < results.length; i++) { |
| String var = results[i].getVariable(); |
| MIValue value = results[i].getMIValue(); |
| String str = ""; //$NON-NLS-1$ |
| |
| if (value instanceof MIConst) { |
| str = ((MIConst) value).getCString(); |
| } |
| |
| if (var.equals("address")) { //$NON-NLS-1$ |
| try { |
| address = decodeAddress(str.trim()); |
| } catch (NumberFormatException e) { |
| } |
| continue; |
| } |
| |
| if (var.equals("func-name")) { //$NON-NLS-1$ |
| function = str; |
| continue; |
| } |
| |
| if (var.equals("offset")) { //$NON-NLS-1$ |
| try { |
| offset = Long.decode(str.trim()).longValue(); |
| } catch (NumberFormatException e) { |
| } |
| continue; |
| } |
| |
| if (var.equals("inst")) { //$NON-NLS-1$ |
| /* for the instruction, we do not want the C string but the |
| translated string since the only thing we are doing is |
| displaying it. */ |
| if (value instanceof MIConst) { |
| str = ((MIConst) value).getString(); |
| } |
| /* to avoid improper displaying of instructions we need to translate tabs */ |
| str = str.replace("\\t", "\t"); //$NON-NLS-1$ //$NON-NLS-2$ |
| |
| char chars[] = str.toCharArray(); |
| int index = 0; |
| |
| // count the non-whitespace characters. |
| while ((index < chars.length) && (chars[index] > '\u0020')) |
| index++; |
| |
| opcode = str.substring(0, index); |
| |
| // skip any whitespace characters |
| while (index < chars.length && chars[index] >= '\u0000' && chars[index] <= '\u0020') |
| index++; |
| |
| // guard no argument |
| if (index < chars.length) |
| args = str.substring(index); |
| |
| continue; |
| } |
| |
| if (var.equals("opcodes")) { //$NON-NLS-1$ |
| try { |
| rawOpcodes = decodeOpcodes(str); |
| opcodeSize = Integer.valueOf(str.replace(" ", "").length() / 2); //$NON-NLS-1$//$NON-NLS-2$ |
| } catch (NumberFormatException e) { |
| } |
| continue; |
| } |
| } |
| |
| } |
| |
| /** |
| * Decode given string representation of a non-negative integer. A |
| * hexadecimal encoded integer is expected to start with <code>0x</code>. |
| * |
| * @param string |
| * decimal or hexadecimal representation of an non-negative integer |
| * @return address value as <code>BigInteger</code> |
| */ |
| private static BigInteger decodeAddress(String string) { |
| if (string.startsWith("0x")) { //$NON-NLS-1$ |
| return new BigInteger(string.substring(2), 16); |
| } |
| return new BigInteger(string); |
| } |
| |
| /** |
| * Decode given string representation of a space separated hex encoded byte |
| * array |
| * |
| * @param string |
| * space separated hexadecimal byte array |
| * @return opcode bytes as <code>BigInteger</code> |
| */ |
| private static BigInteger decodeOpcodes(String string) { |
| // Removing space separation and parse as single big integer |
| return new BigInteger(string.replace(" ", ""), 16); //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.cdt.dsf.debug.service.AbstractInstruction#getSize() |
| */ |
| @Override |
| public Integer getSize() { |
| return opcodeSize; |
| } |
| } |