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Code Issues Releases Wiki Activity

Merge remote-tracking branch 'origin/GT-2741_ghidra1_ElfProgramProperties'

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This commit is contained in:
Ryan Kurtz 2019-06-26 09:44:14 -04:00
commit cf09b6443f
2 changed files with 66 additions and 92 deletions
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10
Ghidra/Features/Base/src/main/java/ghidra/app/util/opinion/ElfLoader.java
View file

@ -46,6 +46,10 @@ public class ElfLoader extends AbstractLibrarySupportLoader {
public final static String ELF_ENTRY_FUNCTION_NAME = "entry";
public final static String ELF_FILE_TYPE_PROPERTY = "ELF File Type";
public final static String ELF_ORIGINAL_IMAGE_BASE_PROPERTY = "ELF Original Image Base";
public final static String ELF_PRELINKED_PROPERTY = "ELF Prelinked";
public final static String ELF_REQUIRED_LIBRARY_PROPERTY_PREFIX = "ELF Required Library ["; // followed by "#]"
public final static String ELF_SOURCE_FILE_PROPERTY_PREFIX = "ELF Source File ["; // followed by "#]"
@ -83,8 +87,7 @@ public class ElfLoader extends AbstractLibrarySupportLoader {
}
}
else if (baseOffsetStrLen < minNibbles) {
baseOffsetStr =
StringUtilities.pad(baseOffsetStr, '0', minNibbles - baseOffsetStrLen);
baseOffsetStr = StringUtilities.pad(baseOffsetStr, '0', minNibbles - baseOffsetStrLen);
}
return baseOffsetStr;
}
@ -143,8 +146,7 @@ public class ElfLoader extends AbstractLibrarySupportLoader {
@Override
public void load(ByteProvider provider, LoadSpec loadSpec, List<Option> options,
Program program,
MemoryConflictHandler handler, TaskMonitor monitor, MessageLog log)
Program program, MemoryConflictHandler handler, TaskMonitor monitor, MessageLog log)
throws IOException {
try {

148
Ghidra/Features/Base/src/main/java/ghidra/app/util/opinion/ElfProgramBuilder.java
View file

@ -117,6 +117,9 @@ class ElfProgramBuilder extends MemorySectionResolver implements ElfLoadHelper {
int id = program.startTransaction("loading program from ELF");
boolean success = false;
try {
addProgramProperties(monitor);
setImageBase();
program.setExecutableFormat(ElfLoader.ELF_NAME);
@ -169,9 +172,6 @@ class ElfProgramBuilder extends MemorySectionResolver implements ElfLoadHelper {
processGNU(monitor);
processGNU_readOnly(monitor);
createFileComment(program.getMinAddress(), monitor);
addProgramProperties(monitor);
success = true;
}
finally {
@ -258,36 +258,71 @@ class ElfProgramBuilder extends MemorySectionResolver implements ElfLoadHelper {
}
}
private void addProgramProperties(TaskMonitor monitor) {
if (monitor.isCancelled()) {
return;
}
private void addProgramProperties(TaskMonitor monitor) throws CancelledException {
monitor.checkCanceled();
monitor.setMessage("Adding program properties...");
Options props = program.getOptions(Program.PROGRAM_INFO);
// Preserve original image base which may be required for DWARF address fixup.
// String is used to avoid decimal rendering of long values in display.
props.setString(ElfLoader.ELF_ORIGINAL_IMAGE_BASE_PROPERTY,
"0x" + Long.toHexString(elf.getImageBase()));
props.setBoolean(ElfLoader.ELF_PRELINKED_PROPERTY, elf.isPreLinked());
String elfFileType;
boolean isRelocatable = false;
switch (elf.e_type()) {
case ElfConstants.ET_CORE:
case ElfConstants.ET_DYN:
case ElfConstants.ET_NONE:
elfFileType = "unspecified";
break;
case ElfConstants.ET_REL:
props.setBoolean(RelocationTable.RELOCATABLE_PROP_NAME, true);
elfFileType = "relocatable";
isRelocatable = true;
break;
case ElfConstants.ET_EXEC:
elfFileType = "executable";
break;
case ElfConstants.ET_DYN:
elfFileType = "shared object";
isRelocatable = true;
break;
case ElfConstants.ET_CORE:
elfFileType = "core";
isRelocatable = true;
break;
default:
props.setBoolean(RelocationTable.RELOCATABLE_PROP_NAME, false);
elfFileType = "unknown";
break;
}
props.setString(ElfLoader.ELF_FILE_TYPE_PROPERTY, elfFileType);
props.setBoolean(RelocationTable.RELOCATABLE_PROP_NAME, isRelocatable);
int fileIndex = 0;
ElfSymbolTable[] symbolTables = elf.getSymbolTables();
for (ElfSymbolTable symbolTable : symbolTables) {
monitor.checkCanceled();
String[] files = symbolTable.getSourceFiles();
for (String file : files) {
monitor.checkCanceled();
props.setString(ElfLoader.ELF_SOURCE_FILE_PROPERTY_PREFIX + pad(fileIndex++) + "]",
file);
}
}
int libraryIndex = 0;
ElfDynamicTable dynamicTable = elf.getDynamicTable();
if (dynamicTable != null) {
String[] neededLibs = elf.getDynamicLibraryNames();
for (String neededLib : neededLibs) {
monitor.checkCanceled();
props.setString(
ElfLoader.ELF_REQUIRED_LIBRARY_PROPERTY_PREFIX + pad(libraryIndex++) + "]",
neededLib);
}
}
// TODO: What was the intent of the following block? I'm commenting out for now because this
// code does nothing useful. But I'll leave it here in case it's a template for
// something that 'should' be implemented.
//
// // save order list of library dependencies
//
// String[] dynamicLibraryNames = elf.getDynamicLibraryNames();
// if (dynamicLibraryNames.length != 0) {
// StringBuilder buf = new StringBuilder();
// for (String libName : dynamicLibraryNames) {
// // TODO?
// }
//
// }
}
private AddressRange getMarkupMemoryRangeConstraint(Address addr) {
@ -2746,69 +2781,6 @@ class ElfProgramBuilder extends MemorySectionResolver implements ElfLoadHelper {
return nextRelocStart;
}
private void createFileComment(Address minAddr, TaskMonitor monitor) {
if (minAddr == null) {
return;
}
if (monitor.isCancelled()) {
return;
}
monitor.setMessage("Creating file comment...");
Options props = program.getOptions(Program.PROGRAM_INFO);
switch (elf.e_type()) {
case ElfConstants.ET_CORE:
props.setString("ELF File Type", "core");
break;
case ElfConstants.ET_DYN:
props.setString("ELF File Type", "shared object");
break;
case ElfConstants.ET_EXEC:
props.setString("ELF File Type", "executable");
break;
case ElfConstants.ET_NONE:
props.setString("ELF File Type", "unspecified");
break;
case ElfConstants.ET_REL:
props.setString("ELF File Type", "relocatable");
break;
default:
props.setString("ELF File Type", "unknown");
break;
}
int fileIndex = 0;
ElfSymbolTable[] symbolTables = elf.getSymbolTables();
for (ElfSymbolTable symbolTable : symbolTables) {
if (monitor.isCancelled()) {
break;
}
String[] files = symbolTable.getSourceFiles();
for (String file : files) {
if (monitor.isCancelled()) {
break;
}
props.setString(ElfLoader.ELF_SOURCE_FILE_PROPERTY_PREFIX + pad(fileIndex++) + "]",
file);
}
}
int libraryIndex = 0;
ElfDynamicTable dynamicTable = elf.getDynamicTable();
if (dynamicTable != null) {
String[] neededLibs = elf.getDynamicLibraryNames();
for (String neededLib : neededLibs) {
if (monitor.isCancelled()) {
break;
}
props.setString(
ElfLoader.ELF_REQUIRED_LIBRARY_PROPERTY_PREFIX + pad(libraryIndex++) + "]",
neededLib);
}
}
}
private String pad(int value) {
return StringUtilities.pad("" + value, ' ', 4);
}