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Only get the ElfSectionHeader in the RelocationHandler if it's not a special section header index to avoid a ArrayIndexOutOfBoundsException

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This commit is contained in:
Maschell 2019-10-11 14:47:48 +02:00
parent 0005907547
commit fb3ec7fe28
1 changed files with 37 additions and 34 deletions
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71
src/main/java/cafeloader/Cafe_ElfRelocationHandler.java
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@ -44,40 +44,43 @@ public class Cafe_ElfRelocationHandler extends ElfRelocationHandler {
* reference because it will be too far away for the actual relocation to * reference because it will be too far away for the actual relocation to
* be valid itself. * be valid itself.
*/ */
ElfSectionHeader symbolSection = elf.getSections()[sym.getSectionHeaderIndex()];
if (symbolSection.getType() == Cafe_ElfExtension.SHT_RPL_IMPORTS.value) { if (sym.getSectionHeaderIndex() > 0) {
String symbolSectionName = symbolSection.getNameAsString(); ElfSectionHeader symbolSection = elf.getSections()[sym.getSectionHeaderIndex()];
boolean isDataImport = false; if (symbolSection.getType() == Cafe_ElfExtension.SHT_RPL_IMPORTS.value) {
if (symbolSectionName.startsWith(".dimport_")) { String symbolSectionName = symbolSection.getNameAsString();
program.getReferenceManager().addMemoryReference(relocationAddress, boolean isDataImport = false;
elfRelocationContext.getSymbolAddress(sym), RefType.DATA, SourceType.IMPORTED, 0); if (symbolSectionName.startsWith(".dimport_")) {
isDataImport = true; program.getReferenceManager().addMemoryReference(relocationAddress,
} else if (symbolSectionName.startsWith(".fimport_")) { elfRelocationContext.getSymbolAddress(sym), RefType.DATA, SourceType.IMPORTED, 0);
program.getReferenceManager().addMemoryReference(relocationAddress, isDataImport = true;
elfRelocationContext.getSymbolAddress(sym), RefType.UNCONDITIONAL_CALL, SourceType.IMPORTED, 0); } else if (symbolSectionName.startsWith(".fimport_")) {
} program.getReferenceManager().addMemoryReference(relocationAddress,
elfRelocationContext.getSymbolAddress(sym), RefType.UNCONDITIONAL_CALL, SourceType.IMPORTED, 0);
String rplName = symbolSectionName.split("import_")[1]; }
if (!rplName.endsWith(".rpl")) {
rplName += ".rpl"; String rplName = symbolSectionName.split("import_")[1];
} if (!rplName.endsWith(".rpl")) {
rplName += ".rpl";
ExternalLocation location = program.getExternalManager().getUniqueExternalLocation(rplName, sym.getNameAsString()); }
if (location != null) {
try { ExternalLocation location = program.getExternalManager().getUniqueExternalLocation(rplName, sym.getNameAsString());
if (isDataImport) { if (location != null) {
program.getReferenceManager().addExternalReference(relocationAddress, 1, try {
location, SourceType.IMPORTED, RefType.DATA); if (isDataImport) {
} else { program.getReferenceManager().addExternalReference(relocationAddress, 1,
program.getReferenceManager().addExternalReference(relocationAddress, 1, location, SourceType.IMPORTED, RefType.DATA);
location, SourceType.IMPORTED, RefType.UNCONDITIONAL_CALL); } else {
} program.getReferenceManager().addExternalReference(relocationAddress, 1,
} catch (InvalidInputException e) { location, SourceType.IMPORTED, RefType.UNCONDITIONAL_CALL);
Msg.warn(this, "addExternalReference failed with " + e); }
} } catch (InvalidInputException e) {
} else { Msg.warn(this, "addExternalReference failed with " + e);
Msg.warn(this, "Failed to find location for " + sym.getNameAsString()); }
} } else {
Msg.warn(this, "Failed to find location for " + sym.getNameAsString());
}
}
} }
switch (type) { switch (type) {