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fix(il2cpp): track unresolved ELF relocation widths

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Fixes #6701
This commit is contained in:
morluto
2026-10-23 21:03:24 +08:00
parent d31e42699f
commit bdf13a63c4
5 changed files with 84 additions and 25 deletions
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src/il2cpp/Il2cppBinaryImage.ts
+7 -7
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@@ -66,7 +66,7 @@ export interface NativeImage {
readonly bytes: Buffer;
readonly container: BinaryContainer;
readonly imageBase: bigint;
readonly unresolvedPointerSlots: ReadonlySet<bigint>;
readonly unresolvedPointerSlots: ReadonlyMap<bigint, number>;
readonly zeroFillPointers: ReadonlyMap<bigint, bigint>;
}
@@ -109,7 +109,7 @@ export function* openImageSteps(
let relocated:
| {
bytes: Buffer;
unresolved: ReadonlySet<bigint>;
unresolved: ReadonlyMap<bigint, number>;
zeroFillPointers: ReadonlyMap<bigint, bigint>;
}
| undefined;
@@ -151,7 +151,7 @@ export function* openImageSteps(
bytes: image,
container,
imageBase,
unresolvedPointerSlots: relocated?.unresolved ?? new Set<bigint>(),
unresolvedPointerSlots: relocated?.unresolved ?? new Map<bigint, number>(),
zeroFillPointers: relocated?.zeroFillPointers ?? new Map<bigint, bigint>(),
};
}
@@ -295,10 +295,10 @@ const hasUnresolvedPointer = (
size = 8,
): boolean => {
if (image.unresolvedPointerSlots.size === 0) return false;
// Unsupported relocation widths are unknown; conservatively cover any
// overlap with the pointer rather than infer a zero or trust stored bytes.
for (let delta = -7; delta < size; delta++)
if (image.unresolvedPointerSlots.has(address + BigInt(delta))) return true;
for (let delta = -7; delta < size; delta++) {
const width = image.unresolvedPointerSlots.get(address + BigInt(delta));
if (width !== undefined && delta + width > 0) return true;
}
return false;
};