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Automatically infer function ends in IDA.

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The problem with using an end param in IDA is that IDA will quite
stupidly treat the function end as gospel even if it makes no sense
(e.g. a single "function" spanning many MB because there are no symbols
in between). Leaving out end, on the other hand, tells IDA there's a
function at a given starting address but lets IDA figure out the end by
itself, which it usually does correctly.
This commit is contained in:
Robert Xiao
2020-04-18 01:59:09 -07:00
committed by Katy
parent 34f0d4ceef
commit 359b99fded
1 changed files with 4 additions and 11 deletions
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15
Il2CppInspector.Common/Outputs/IDAPythonScript.cs
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@@ -72,15 +72,9 @@ def SetName(addr, name):
new_name = name + '_' + str(addr) new_name = name + '_' + str(addr)
ret = idc.set_name(addr, new_name, SN_NOWARN | SN_NOCHECK) ret = idc.set_name(addr, new_name, SN_NOWARN | SN_NOCHECK)
def MakeFunction(start, end): def MakeFunction(start):
next_func = idc.get_next_func(start) ida_funcs.add_func(start)
if next_func < end: ");
end = next_func
current_func = idaapi.get_func(start)
if current_func is not None and current_func.startEA == start:
ida_funcs.del_func(start)
ida_funcs.add_func(start, end)"
);
// Compatibility (in a separate decl block in case these are already defined) // Compatibility (in a separate decl block in case these are already defined)
writeDecls(@" writeDecls(@"
@@ -162,8 +156,7 @@ typedef __int64 int64_t;
private void writeFunctions() { private void writeFunctions() {
foreach (var func in model.Package.FunctionAddresses) foreach (var func in model.Package.FunctionAddresses)
if (func.Key != func.Value) writeLine($"MakeFunction({func.Key.ToAddressString()})");
writeLine($"MakeFunction({func.Key.ToAddressString()}, {func.Value.ToAddressString()})");
} }
private void writeMetadata() { private void writeMetadata() {