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GP-3963: Fixed an exception that could sometimes occur when parsing PE

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files with debug line number information
This commit is contained in:
Ryan Kurtz 2023-10-24 13:09:36 -04:00
parent 10cc91bd8e
commit dee7e7599f
4 changed files with 7 additions and 18 deletions
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2
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/pe/debug/OMFSrcModule.java
View File

@ -78,7 +78,7 @@ public class OMFSrcModule {
}
for (int i = 0; i < Conv.shortToInt(cFile); ++i) {
moduleFileList.add(new OMFSrcModuleFile(reader, ptr + baseSrcFile[i]));
moduleFileList.add(new OMFSrcModuleFile(reader, ptr, ptr + baseSrcFile[i]));
}
}

4
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/pe/debug/OMFSrcModuleFile.java
View File

@ -54,7 +54,7 @@ public class OMFSrcModuleFile {
private ArrayList<OMFSrcModuleLine> moduleLineList = new ArrayList<OMFSrcModuleLine>();
OMFSrcModuleFile(BinaryReader reader, int ptr) throws IOException {
OMFSrcModuleFile(BinaryReader reader, int moduleBase, int ptr) throws IOException {
int index = ptr;
cSeg = reader.readShort(index);
@ -86,7 +86,7 @@ public class OMFSrcModuleFile {
for (int i = 0; i < Conv.shortToInt(cSeg); ++i) {
//OMFSrcModuleLine line = new OMFSrcModuleLine(reader, index);
OMFSrcModuleLine line = new OMFSrcModuleLine(reader, ptr + baseSrcLn[i]);
OMFSrcModuleLine line = new OMFSrcModuleLine(reader, moduleBase + baseSrcLn[i]);
moduleLineList.add(line);
index += line.getByteCount();
}

2
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/pe/debug/S_CONSTANT32.java
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@ -38,8 +38,6 @@ class S_CONSTANT32 extends DebugSymbol {
ptr += BinaryReader.SIZEOF_BYTE;
name = reader.readAsciiString(ptr, Conv.byteToInt(nameLen));
Msg.debug(this, "S_CONSTANT32: " + unknown1 + " - " + unknown2);
}
}

17
Ghidra/Features/Base/src/main/java/ghidra/app/util/opinion/AbstractPeDebugLoader.java
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@ -177,12 +177,9 @@ abstract class AbstractPeDebugLoader extends AbstractOrdinalSupportLoader {
FileHeader fileHeader = ntHeader.getFileHeader();
List<OMFSrcModule> srcModules = dcvst.getOMFSrcModules();
for (OMFSrcModule module : srcModules) {
short[] segs = module.getSegments();
int segIndex = 0;
OMFSrcModuleFile[] files = module.getOMFSrcModuleFiles();
for (OMFSrcModuleFile file : files) {
processFiles(file, segs[segIndex++], fileHeader, sectionToAddress, monitor);
processFiles(file, module.getSegments(), fileHeader, sectionToAddress, monitor);
processLineNumbers(fileHeader, sectionToAddress, file.getOMFSrcModuleLines(),
options, monitor);
@ -274,18 +271,18 @@ abstract class AbstractPeDebugLoader extends AbstractOrdinalSupportLoader {
}
}
private void processFiles(OMFSrcModuleFile file, short segment, FileHeader fileHeader,
private void processFiles(OMFSrcModuleFile file, short[] segments, FileHeader fileHeader,
Map<SectionHeader, Address> sectionToAddress, TaskMonitor monitor) {
int[] starts = file.getStarts();
int[] ends = file.getEnds();
for (int k = 0; k < starts.length; ++k) {
if (starts[k] == 0 || ends[k] == 0) {
if (starts[k] == 0 || ends[k] == 0 || k >= segments.length) {
continue;
}
Address addr = sectionToAddress.get(fileHeader.getSectionHeader(segment - 1));
Address addr = sectionToAddress.get(fileHeader.getSectionHeader(segments[k] - 1));
if (addr == null) {
continue;
}
@ -323,12 +320,6 @@ abstract class AbstractPeDebugLoader extends AbstractOrdinalSupportLoader {
if (monitor.isCancelled()) {
return;
}
if (offsets[j] == 0) {
System.out.println("");
}
if (offsets[j] == 1) {
System.out.println("");
}
if (offsets[j] > 0) {
addLineComment(addr.add(Conv.intToLong(offsets[j])),
Conv.shortToInt(lineNumbers[j]));