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Fix IDA writeUsages for metadata <19

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This fixes a NullReferenceException that was being thrown for IDA script
generation for metadata 16 files (e.g. as generated by Il2Cpp v5.3.0f4).
This commit is contained in:
Robert Xiao
2020-04-07 01:38:44 -07:00
committed by Katy
parent 5b78fc3f3c
commit 7fce43aba0
1 changed files with 6 additions and 2 deletions
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8
Il2CppInspector.Common/Outputs/IDAPythonScript.cs
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@@ -107,6 +107,11 @@ def MakeFunction(start, end):
} }
private void writeUsages() { private void writeUsages() {
if (model.Package.MetadataUsages == null) {
/* Version < 19 - no MetadataUsages table */
return;
}
foreach (var usage in model.Package.MetadataUsages) { foreach (var usage in model.Package.MetadataUsages) {
var address = usage.VirtualAddress; var address = usage.VirtualAddress;
var name = model.GetMetadataUsageName(usage); var name = model.GetMetadataUsageName(usage);
@@ -119,8 +124,7 @@ def MakeFunction(start, end):
if (usage.Type == MetadataUsageType.MethodDef || usage.Type == MetadataUsageType.MethodRef) { if (usage.Type == MetadataUsageType.MethodDef || usage.Type == MetadataUsageType.MethodRef) {
var method = model.GetMetadataUsageMethod(usage); var method = model.GetMetadataUsageMethod(usage);
writeComment(address, method); writeComment(address, method);
} } else if (usage.Type != MetadataUsageType.StringLiteral) {
else if (usage.Type != MetadataUsageType.StringLiteral) {
var type = model.GetMetadataUsageType(usage); var type = model.GetMetadataUsageType(usage);
writeComment(address, type); writeComment(address, type);
} }