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morluto
7adfcc4467
Centralize ELF section and Godot trailer declarations while preserving caller admission policies. Route six PE entrypoints through canonical DOS ownership so relocation data cannot establish a PE header, and update NativeAOT interpretation identity and verifier dependency coverage.
33 lines
1.0 KiB
TypeScript
33 lines
1.0 KiB
TypeScript
import { err, ok } from "./result.js";
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/** Fixed ELF32/ELF64 section declarations; consumers own names, numbering and mapping admission. */
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export const readElfSectionHeader = (
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bytes: Uint8Array,
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bits: 32 | 64,
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littleEndian: boolean,
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) => {
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const wide = bits === 64;
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if (bytes.byteLength < (wide ? 64 : 40))
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return err({
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kind: "malformed" as const,
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message: "ELF section header is truncated",
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});
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const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
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const word = (at: number): bigint =>
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wide
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? view.getBigUint64(at, littleEndian)
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: BigInt(view.getUint32(at, littleEndian));
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return ok({
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nameOffset: view.getUint32(0, littleEndian),
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type: view.getUint32(4, littleEndian),
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flags: word(8),
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address: word(wide ? 16 : 12),
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offset: word(wide ? 24 : 16),
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size: word(wide ? 32 : 20),
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link: view.getUint32(wide ? 40 : 24, littleEndian),
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info: view.getUint32(wide ? 44 : 28, littleEndian),
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alignment: word(wide ? 48 : 32),
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entrySize: word(wide ? 56 : 36),
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});
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};
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