143 lines
4.8 KiB
Java
143 lines
4.8 KiB
Java
/* ###
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* IP: GHIDRA
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* REVIEWED: YES
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import docking.widgets.OptionDialog;
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import ghidra.app.script.GhidraScript;
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import ghidra.program.database.ProgramDB;
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import ghidra.program.model.address.Address;
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import ghidra.program.model.address.AddressRange;
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import ghidra.program.model.listing.Listing;
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import ghidra.program.model.mem.MemoryBlock;
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import ghidra.program.model.symbol.*;
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import ghidra.util.Msg;
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public class MoveMemoryRangeContents extends GhidraScript {
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@Override
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public void run() throws Exception {
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if (!(currentProgram instanceof ProgramDB)) {
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Msg.showError(this, null, "No Program Found", "This script requires an open program");
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return;
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}
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ProgramDB program = (ProgramDB) currentProgram;
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try {
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program.checkExclusiveAccess();
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}
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catch (Exception e) {
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Msg.showError(this, null, "Program Error",
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"This script requires an exclusive checkout on the program");
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return;
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}
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Listing listing = currentProgram.getListing();
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if (currentSelection == null || currentSelection.getNumAddressRanges() != 1) {
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Msg.showError(this, null, "Invalid Selection",
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"Action requires a single selected memory range within a single memory block");
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return;
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}
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AddressRange srcRange = currentSelection.getFirstRange();
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Address srcStart = srcRange.getMinAddress();
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int length = (int) srcRange.getMaxAddress().subtract(srcStart) + 1;
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MemoryBlock block1 = program.getMemory().getBlock(srcStart);
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MemoryBlock block2 = program.getMemory().getBlock(srcRange.getMaxAddress());
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if (block1 == null || block1 != block2 || !block1.isInitialized()) {
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Msg.showError(this, null, "Invalid Selection",
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"Action requires a single selected memory range within a single initialized memory block");
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return;
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}
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Address destStart = askAddress("Memory Destination", "Enter destination address:");
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MemoryBlock block = program.getMemory().getBlock(destStart);
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if (block == null || !block.isInitialized()) {
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Msg.showError(this, null, "Invalid Destination",
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"Initialized memory block not found at destination address: " + destStart);
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return;
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}
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long availableSpace = block.getEnd().subtract(destStart) + 1;
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if (availableSpace < length) {
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Msg.showError(this, null, "Memory Move Failed",
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"Insufficient space in specified memory block starting at " + destStart + ".\n" +
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"Selected range is 0x" + Long.toHexString(length) + " bytes long");
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return;
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}
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Address destEnd = destStart.add(length - 1);
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int resp =
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OptionDialog.showOptionDialog(null, "Confirm Memory Move",
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"Do you wish to overwrite all bytes, code units, symbols and references from\n" +
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"the specified destination range: " + destStart + " to " + destEnd, "Continue");
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if (resp != OptionDialog.OPTION_ONE) {
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return;
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}
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monitor.setMessage("Clearing old code units...");
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listing.clearCodeUnits(destStart, destEnd, true, monitor);
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monitor.setMessage("Clearing old code properties...");
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listing.clearProperties(destStart, destEnd, monitor);
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monitor.setMessage("Clearing old symbols...");
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SymbolIterator symIter = program.getSymbolTable().getSymbolIterator(destStart, true);
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while (symIter.hasNext()) {
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monitor.checkCanceled();
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Symbol sym = symIter.next();
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if (sym.getAddress().compareTo(destEnd) > 0) {
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break;
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}
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}
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monitor.setMessage("Clearing old references...");
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ReferenceManager refMgr = program.getReferenceManager();
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refMgr.removeAllReferencesFrom(destStart, destEnd);
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// Remove range from all tree modules
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program.getTreeManager().deleteAddressRange(destStart, destEnd, monitor);
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monitor.setMessage("Move memory bytes...");
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byte[] bytes = new byte[4096];
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int len = length;
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Address srcAddr = srcStart;
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Address destAddr = destStart;
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while (true) {
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monitor.checkCanceled();
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int cnt = program.getMemory().getBytes(srcAddr, bytes, 0, Math.min(len, bytes.length));
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currentProgram.getMemory().setBytes(destAddr, bytes, 0, cnt);
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len -= cnt;
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if (len <= 0) {
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break;
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}
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srcAddr = srcAddr.add(cnt);
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destAddr = destAddr.add(cnt);
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}
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monitor.setMessage("Moving everything else...");
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program.moveAddressRange(srcStart, destStart, length, monitor);
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// Add tree module for old range
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program.getTreeManager().addMemoryBlock("Obsolete", srcRange);
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program.invalidate();
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}
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}
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