mirror of
https://github.com/morluto/rea
synced 2026-10-26 14:25:49 -04:00
morluto
@@ -0,0 +1,468 @@
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import { createHash } from "node:crypto";
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type InlineCacheEntry = readonly [opcode: number, codeUnits: number];
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const inlineCacheProfiles = (
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magics: readonly number[],
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entries: readonly InlineCacheEntry[],
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): ReadonlyArray<readonly [number, ReadonlyMap<number, number>]> => {
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const profile = new Map(entries);
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return magics.map((magic) => [magic, profile]);
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};
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/**
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* CPython equality skips cache code units after comparing original code size.
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* These tables are pinned to CPython bytecode snapshots, not the shared marshal
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* layout. The 3.11 profile is from v3.11.9; commit
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* 616622cab7200bac476bf753d6cc98f4ee48808c adds magic 3495 with the same
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* opcode/cache table. 3.12 magic/profile transitions
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* follow CPython's v3.12.12 magic history and these cache-changing source
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* commits: f012df706cf3a9e63625b8166fe3f419855e9a94 (3503),
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* b083450f8896bb4a29ac522e4474d91c056b9f32 (3504),
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* 5fcfdd87c9b5066a581d3ccb4b2fede938f343ec (3505),
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* 6e4e14d98fe0868981f29701496d57a8223c5407 (3515),
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* 7b14c2ef194b6eed79670aa9d7e29ab8e2256a56 (3516),
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* 160f2fe2b90ed5ec7838cb4141dd35768422891f (3519),
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* 08b67fb34f4519be1b0bb4673643a2c761c7ae92 (3521),
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* 0444ae24875489dc290d8efdb9ee6440ee60dac8 (3523),
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* 121057aa3600c4d4d392539aeb79e1b09fd5659d (3524),
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* b4978ff872be5102117b4e25d93dbbb4e04c8292 (3525),
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* ef25febcf2ede92a03c5ea00a13e167e0b5cb274 (3528), and
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* 77262458fe3fe9f3f0266bbf578675a906b1e353 (3530). The 3.13 magic history
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* is recorded in CPython's Lib/importlib/_bootstrap_external.py; opcode/cache sources include
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* 1d857da7f0e4858e561223f319ae5afe737d5657 (3553/3554),
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* 665a4391e10167dad1c854fb604c86f336fcd331 (3559),
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* 3b2ecbc1275bd05534885cee9ac1389987238561 (3560),
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* bcce5e271815c0bdbe894964e853210d2c75949b (3561),
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* 8b55adfa8ff05477b4be7def36db7b66c73f181d (3562),
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* 22e65eecaad3f5337862319687047afe9861e1ef (3563), and
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* 52cc4af6ae9002f11605f91b672746c127494efd (3564). Adjacent magics share a
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* profile only where their source changes do not alter cache widths or IDs.
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*/
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const INLINE_CACHE_ENTRIES_BY_MAGIC: ReadonlyMap<
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number,
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ReadonlyMap<number, number>
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> = new Map([
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...inlineCacheProfiles(
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[3494, 3495],
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[
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[25, 4],
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[60, 1],
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[92, 1],
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[95, 4],
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[106, 4],
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[107, 2],
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[116, 5],
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[122, 1],
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[160, 10],
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[166, 1],
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[171, 4],
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],
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),
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...inlineCacheProfiles(
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[3500, 3501, 3502],
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[
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[25, 4],
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[60, 1],
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[92, 1],
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[95, 4],
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[106, 4],
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[107, 2],
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[116, 5],
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[122, 1],
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[160, 10],
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[171, 4],
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],
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),
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...inlineCacheProfiles(
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[3503],
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[
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[25, 4],
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[60, 1],
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[92, 1],
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[95, 4],
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[106, 4],
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[107, 2],
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[116, 5],
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[122, 1],
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[160, 9],
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[171, 4],
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],
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),
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...inlineCacheProfiles(
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[3504],
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[
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[25, 4],
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[60, 1],
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[92, 1],
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[95, 4],
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[106, 9],
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[107, 2],
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[116, 5],
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[122, 1],
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[171, 4],
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],
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),
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...inlineCacheProfiles(
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[3505, 3506, 3507, 3508, 3509, 3510, 3511, 3512, 3513, 3514],
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[
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[25, 4],
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[60, 1],
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[92, 1],
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[93, 1],
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[95, 4],
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[106, 9],
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[107, 2],
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[116, 5],
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[122, 1],
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[171, 4],
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],
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),
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...inlineCacheProfiles(
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[3515],
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[
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[25, 4],
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[60, 1],
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[92, 1],
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[93, 1],
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[95, 4],
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[106, 9],
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[107, 1],
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[116, 5],
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[122, 1],
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[171, 4],
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],
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),
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...inlineCacheProfiles(
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[3516, 3517, 3518],
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[
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[25, 4],
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[60, 1],
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[92, 1],
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[93, 1],
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[95, 4],
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[106, 9],
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[107, 1],
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[116, 5],
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[122, 1],
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[141, 1],
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[171, 4],
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],
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),
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...inlineCacheProfiles(
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[3519, 3520],
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[
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[25, 4],
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[60, 1],
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[92, 1],
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[93, 1],
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[95, 4],
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[106, 9],
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[107, 1],
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[116, 5],
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[122, 1],
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[123, 1],
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[141, 1],
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[171, 4],
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],
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),
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...inlineCacheProfiles(
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[3521, 3522],
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[
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[25, 4],
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[60, 1],
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[92, 1],
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[93, 1],
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[95, 4],
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[106, 9],
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[107, 1],
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[116, 4],
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[122, 1],
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[123, 1],
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[141, 1],
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[171, 4],
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],
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),
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...inlineCacheProfiles(
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[3523],
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[
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[25, 4],
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[60, 1],
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[92, 1],
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[93, 1],
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[95, 4],
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[106, 9],
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[107, 1],
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[116, 4],
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[122, 1],
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[123, 1],
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[171, 4],
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],
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),
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...inlineCacheProfiles(
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[3524],
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[
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[25, 1],
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[60, 1],
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[92, 1],
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[93, 1],
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[95, 4],
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[106, 9],
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[107, 1],
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[116, 4],
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[122, 1],
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[123, 1],
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[171, 4],
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],
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),
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...inlineCacheProfiles(
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[3525, 3526, 3527],
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[
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[25, 1],
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[60, 1],
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[92, 1],
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[93, 1],
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[95, 4],
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[106, 9],
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[107, 1],
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[116, 4],
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[122, 1],
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[123, 1],
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[171, 3],
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],
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),
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...inlineCacheProfiles(
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[3528, 3529],
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[
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[25, 1],
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[60, 1],
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[92, 1],
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[93, 1],
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[95, 4],
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[106, 9],
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[107, 1],
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[116, 4],
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[122, 1],
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[123, 1],
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[141, 9],
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[171, 3],
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],
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),
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...inlineCacheProfiles(
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[3530, 3531],
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[
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[25, 1],
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[60, 1],
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[92, 1],
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[93, 1],
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[95, 4],
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[106, 9],
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[107, 1],
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[116, 4],
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[122, 1],
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[123, 1],
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[141, 1],
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[171, 3],
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],
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),
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...inlineCacheProfiles(
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[3550, 3551, 3552, 3553, 3554, 3555, 3556, 3557, 3558],
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[
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[25, 1],
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[60, 1],
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[92, 1],
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[93, 1],
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[95, 4],
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[106, 9],
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[107, 1],
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[116, 4],
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[122, 1],
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[123, 1],
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[140, 1],
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[141, 1],
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[171, 3],
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],
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),
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...inlineCacheProfiles(
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[3559],
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[
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[12, 1],
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[53, 1],
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[56, 3],
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[67, 1],
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[75, 3],
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[97, 1],
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[114, 1],
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[123, 1],
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[129, 9],
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[150, 4],
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[154, 1],
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[168, 1],
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[173, 4],
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[183, 1],
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],
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),
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...inlineCacheProfiles(
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[3560],
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[
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[12, 1],
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[54, 1],
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[57, 3],
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[68, 1],
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[76, 3],
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[98, 1],
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[115, 1],
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[124, 1],
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[130, 9],
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[151, 4],
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[155, 1],
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[169, 1],
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[174, 4],
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[184, 1],
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],
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),
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...inlineCacheProfiles(
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[3561],
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[
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[12, 1],
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[54, 1],
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[57, 3],
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[68, 1],
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[76, 3],
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[98, 1],
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[115, 1],
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[124, 1],
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[130, 9],
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[151, 4],
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[155, 1],
|
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[161, 1],
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[162, 1],
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[163, 1],
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[164, 1],
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[169, 1],
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[174, 4],
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[184, 1],
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],
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),
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...inlineCacheProfiles(
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[3562],
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[
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[5, 1],
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[39, 1],
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[40, 3],
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[45, 1],
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[53, 3],
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[57, 1],
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[71, 1],
|
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[76, 1],
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[82, 9],
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[91, 4],
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[93, 1],
|
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[97, 1],
|
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[98, 1],
|
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[99, 1],
|
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[100, 1],
|
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[104, 1],
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[108, 4],
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[117, 1],
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],
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),
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...inlineCacheProfiles(
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[3563, 3564, 3565, 3566, 3567, 3568],
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[
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[5, 1],
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[39, 1],
|
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[40, 3],
|
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[45, 1],
|
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[53, 3],
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[58, 1],
|
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[72, 1],
|
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[77, 1],
|
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[82, 9],
|
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[91, 4],
|
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[93, 1],
|
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[97, 1],
|
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[98, 1],
|
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[99, 1],
|
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[100, 1],
|
||||
[104, 1],
|
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[108, 4],
|
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[117, 1],
|
||||
],
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),
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||||
...inlineCacheProfiles(
|
||||
[3569, 3570],
|
||||
[
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[5, 1],
|
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[39, 1],
|
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[40, 3],
|
||||
[45, 1],
|
||||
[53, 3],
|
||||
[58, 1],
|
||||
[59, 1],
|
||||
[72, 1],
|
||||
[77, 1],
|
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[82, 9],
|
||||
[91, 4],
|
||||
[93, 1],
|
||||
[97, 1],
|
||||
[98, 1],
|
||||
[99, 1],
|
||||
[100, 1],
|
||||
[104, 1],
|
||||
[108, 4],
|
||||
[117, 1],
|
||||
],
|
||||
),
|
||||
...inlineCacheProfiles(
|
||||
[3571],
|
||||
[
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||||
[5, 1],
|
||||
[38, 1],
|
||||
[39, 3],
|
||||
[44, 1],
|
||||
[52, 3],
|
||||
[57, 1],
|
||||
[58, 1],
|
||||
[71, 1],
|
||||
[76, 1],
|
||||
[81, 9],
|
||||
[91, 4],
|
||||
[93, 1],
|
||||
[97, 1],
|
||||
[98, 1],
|
||||
[99, 1],
|
||||
[100, 1],
|
||||
[104, 1],
|
||||
[108, 4],
|
||||
[117, 1],
|
||||
],
|
||||
),
|
||||
]);
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||||
|
||||
/** Preserve CPython's bytecode-size check and omit only cache code units. */
|
||||
export const pythonPycBytecodeIdentity = (
|
||||
bytecode: Buffer,
|
||||
magic: number,
|
||||
rawSha256: string,
|
||||
): string => {
|
||||
const caches = INLINE_CACHE_ENTRIES_BY_MAGIC.get(magic);
|
||||
if (caches === undefined) return `${bytecode.length}:${rawSha256}`;
|
||||
|
||||
const digest = createHash("sha256");
|
||||
let activeStart = 0;
|
||||
for (let offset = 0; offset < bytecode.length;) {
|
||||
const opcode = bytecode[offset] ?? 0;
|
||||
const afterOpcode = offset + 2;
|
||||
const cacheBytes = (caches.get(opcode) ?? 0) * 2;
|
||||
offset = afterOpcode + cacheBytes;
|
||||
if (cacheBytes > 0) {
|
||||
digest.update(bytecode.subarray(activeStart, afterOpcode));
|
||||
activeStart = offset;
|
||||
}
|
||||
}
|
||||
if (activeStart < bytecode.length) {
|
||||
digest.update(bytecode.subarray(activeStart));
|
||||
}
|
||||
return `${bytecode.length}:${digest.digest("hex")}`;
|
||||
};
|
||||
Reference in New Issue
Block a user