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Valiantsin DzerakhandClaude Opus 5.5
a5711539e1
gen.py started one emit worker per CPU, about 1.3 GiB each on 1.4.3, so many-core machines with modest RAM died with a MemoryError during "Translating code to C" (issues 17, 28, probably 66). The default is now min(CPU count, 80% of the free physical memory / 1.5 GiB), at least 1, capped by the memory limit of the enclosing job object if there is one. --jobs still overrides it, and the chosen count and its reason are logged. The memory helper is tools/hostmem.py, shipped with the release tools. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
756 lines
35 KiB
Python
756 lines
35 KiB
Python
# Adapted from LAS Recomp tools/gen.py @ da35b83 (MIT, Copyright (c) 2026 Peiikai).
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"""Generate C for the ExeFS modules: function discovery, then parallel emission into chunked C files.
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Usage: gen.py --exefs build/extracted/v121/exefs --out generated/v121 [--modules main,subsdk0,sdk] [--jobs N]
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[--limit N] [--chunk-fns N] [--chunk-bytes B] [--big-fn B] [--patches FILE]
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Output, under --out:
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layout.h, layout.json module bases (recomp/layout.py)
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<mod>/<mod>_NNNN.c one `void f_<addr>(Cpu *c)` per guest function, about --chunk-bytes of C per file
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<mod>/<mod>_table.c sorted <mod>_fn_addrs[] / <mod>_fn_ptrs[] / <mod>_fn_count for rt_dispatch
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<mod>/manifest.json chunk list, function count, statistics and timings
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patches.h code patch sets for the runtime (recomp/patches.py; no sets without --patches)
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Function discovery runs in this process, vectorised over the module's .text words. Function starts are the module
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seeds (.eh_frame_hdr, exported FUNC symbols, RELATIVE relocation targets), every BL target, and code addresses
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materialised by ADR or ADRP+ADD (except an ADR that anchors a jump table: one with a `br` in the next 16
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instructions, or one an ADD register form uses as its base right after). A function is [start, next start). A direct branch whose target lies outside its
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function makes the target a new start, until no new start appears.
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Emission runs in worker processes, one chunk per task. Each worker loads the modules itself, lifts one function at a
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time and resolves its jump tables (recomp/jumptables.py), so memory per worker does not grow with the module.
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Chunks are sized from a per-instruction estimate of the C they produce, so their names and contents only depend on
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the input; a chunk whose text did not change is not rewritten and keeps its mtime.
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"""
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import argparse
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import json
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import multiprocessing as mp
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import os
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import re
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import sys
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import time
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from collections import Counter
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from pathlib import Path
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import numpy as np
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ROOT = Path(__file__).resolve().parents[1]
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sys.path.insert(0, str(ROOT / 'tools'))
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sys.path.insert(0, str(ROOT / 'recomp'))
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import flags # noqa: E402
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import hostmem # noqa: E402
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import jumptables # noqa: E402
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import patches # noqa: E402
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import regs # noqa: E402
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from check_content import GENERATED_MARKER # noqa: E402
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from layout import layout, write as write_layout # noqa: E402
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from lifter import hx # noqa: E402
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from module import Module # noqa: E402
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TERMINATORS = ('b', 'br', 'ret', 'trap')
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MUSTTAIL = '__attribute__((musttail)) return'
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# Estimated bytes of C per instruction, by class, for chunking (estimate_sizes()).
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# Least squares over every function of main, subsdk0 and sdk (1.2.1) gives 62 / 75 / 48 bytes per instruction, 38
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# per function and 4.5 per instruction of a function with a `br` (switches; the all-label fallback costs about 60
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# per instruction but is rare); the median error per function is 7 %.
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EST_INT = 62
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EST_SIMD = 75
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EST_SIMD_LDST = 48
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EST_FN = 38 # per function: signature, FN_ENTER, closing brace
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EST_BR_LABELS = 10 # per instruction of a function with a `br`: switch cases, or labels if it falls back
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def fname(a):
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return f'f_{a:x}'
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def header(what):
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return f'// {GENERATED_MARKER}: {what}, generated by recomp/gen.py from game code. Do not edit or commit.\n'
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# ------------------------------------------------------------------------------------------------ discovery
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def _sext(v, n):
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v = v.astype(np.int64)
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return np.where(v & (1 << (n - 1)), v - (1 << n), v)
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def discover(mod):
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"""Function starts of mod as a sorted int64 array of word indices into mod.words, plus discovery statistics."""
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w = mod.words
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n = len(w)
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def idx(mask):
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return np.flatnonzero(mask).astype(np.int64)
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seeds = (np.asarray(mod.seeds(), dtype=np.int64) - mod.lo) >> 2
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# B and BL: imm26. BL targets are function starts; B targets join the fixpoint below.
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b_all = idx((w & 0x7C000000) == 0x14000000)
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imm = _sext(w[b_all] & 0x03FFFFFF, 26)
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is_bl = (w[b_all] >> 31).astype(bool)
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bl_tgt = b_all[is_bl] + imm[is_bl]
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br_src, br_tgt = [b_all[~is_bl]], [b_all[~is_bl] + imm[~is_bl]]
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# B.cond (the lifter accepts o1 = 1 too), CBZ/CBNZ: imm19 at bit 5. TBZ/TBNZ: imm14 at bit 5.
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for mask, val, nb in ((0xFE000010, 0x54000000, 19), (0x7E000000, 0x34000000, 19), (0x7E000000, 0x36000000, 14)):
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s = idx((w & mask) == val)
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br_src.append(s)
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br_tgt.append(s + _sext((w[s] >> 5) & ((1 << nb) - 1), nb))
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br_src, br_tgt = np.concatenate(br_src), np.concatenate(br_tgt)
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ok = (br_tgt >= 0) & (br_tgt < n)
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br_src, br_tgt = br_src[ok], br_tgt[ok]
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# ADR: pc + imm21. ADRP: page + (imm21 << 12), then ADD (imm, 64-bit, unshifted) of the same register within
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# 8 instructions. Targets must be aligned and in .text.
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def imm21(s):
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v = w[s]
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return _sext(((v >> 5) & 0x7FFFF) << 2 | ((v >> 29) & 3), 21)
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pc0 = np.int64(mod.lo)
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adr = idx((w & 0x9F000000) == 0x10000000)
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# Clang's jump tables add a table entry to an ADR anchor, the first case block, then `br`. That anchor is not a
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# function (it would split the switch): an ADR with a `br` in the next 16 instructions is not a seed, nor is one
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# whose register is the base of an ADD (shifted or extended register) in the next 4 instructions
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# (`adr xA, L; ldrb wO, [..]; add xA, xA, wO, lsl #2`), however far the scheduler moved the `br`.
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br = idx((w & 0xFFFFFC1F) == 0xD61F0000)
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nxt = np.searchsorted(br, adr)
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has_br = nxt < len(br)
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near = np.zeros(len(adr), dtype=bool)
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near[has_br] = br[nxt[has_br]] - adr[has_br] <= 16
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rd = w[adr] & 31
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for k in range(1, 5):
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x = w[np.minimum(adr + k, n - 1)]
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near |= (((x & 0xFF200000) == 0x8B000000) | ((x & 0xFFE00000) == 0x8B200000)) & (((x >> 5) & 31) == rd)
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adr = adr[~near]
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adr_bytes = pc0 + adr * 4 + imm21(adr)
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is_adrp = (w & 0x9F000000) == 0x90000000
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add = idx((w & 0xFFC00000) == 0x91000000)
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rn = ((w[add] >> 5) & 31).astype(np.int64)
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found = np.full(len(add), -1, dtype=np.int64)
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for k in range(1, 9):
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p = add - k
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cand = (found < 0) & (p >= 0)
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pc = np.where(cand, p, 0)
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cand &= is_adrp[pc] & ((w[pc] & 31).astype(np.int64) == rn)
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found[cand] = p[cand]
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hit = found >= 0
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p = found[hit]
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page = ((pc0 + p * 4) & ~np.int64(0xFFF)) + (imm21(p) << 12)
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add_bytes = page + ((w[add[hit]] >> 10) & 0xFFF).astype(np.int64)
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mat = np.concatenate([adr_bytes, add_bytes])
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mat = mat[(mat >= mod.lo) & (mat < mod.hi) & (mat % 4 == 0)]
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mat = (mat - pc0) >> 2
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bl_tgt = bl_tgt[(bl_tgt >= 0) & (bl_tgt < n)]
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starts = np.unique(np.concatenate([seeds, bl_tgt, mat]))
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stats = {'seeds': int(len(seeds)), 'bl_targets': int(len(np.unique(bl_tgt))),
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'materialised_targets': int(len(np.unique(mat))), 'initial_starts': int(len(starts))}
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rounds = 0
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while True:
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rounds += 1
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f = np.searchsorted(starts, br_src, side='right') - 1
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live = f >= 0
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f = np.where(live, f, 0)
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lo = starts[f]
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hi = np.where(f + 1 < len(starts), starts[np.minimum(f + 1, len(starts) - 1)], n)
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out = live & ((br_tgt < lo) | (br_tgt >= hi))
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new = np.setdiff1d(br_tgt[out], starts, assume_unique=False)
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if not len(new):
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break
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starts = np.union1d(starts, new)
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stats['rounds'] = rounds
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stats['functions'] = int(len(starts))
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return starts, stats
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def estimate_sizes(mod, starts):
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"""Estimated bytes of C per function (for chunking only; the manifest records the real sizes)."""
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w = mod.words
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cost = np.full(len(w), EST_INT, dtype=np.int64)
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cost[(w & 0x0E000000) == 0x0E000000] = EST_SIMD # FP/AdvSIMD data processing
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cost[((w & 0x0A000000) == 0x08000000) & (((w >> 26) & 1) == 1)] = EST_SIMD_LDST # FP/SIMD load/store
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has_br = np.zeros(len(w), dtype=np.int64)
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has_br[np.flatnonzero((w & 0xFFFFFC1F) == 0xD61F0000)] = 1 # BR Xn
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csum = np.concatenate([[0], np.cumsum(cost)])
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bsum = np.concatenate([[0], np.cumsum(has_br)])
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ends = np.append(starts[1:], len(w))
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size = csum[ends] - csum[starts] + EST_FN
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with_br = (bsum[ends] - bsum[starts]) > 0
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size[with_br] += (ends[with_br] - starts[with_br]) * EST_BR_LABELS
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return size
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def partition(est, max_fns, max_bytes, big_fn):
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"""Contiguous [i0, i1) function ranges: at most max_fns functions and about max_bytes of C each; a function
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estimated above big_fn gets a file of its own so large functions compile in parallel."""
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chunks, i0, size = [], 0, 0
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for i, s in enumerate(est.tolist()):
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if s > big_fn:
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if i > i0:
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chunks.append((i0, i))
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chunks.append((i, i + 1))
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i0, size = i + 1, 0
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continue
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if i > i0 and (i - i0 >= max_fns or size + s > max_bytes):
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chunks.append((i0, i))
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i0, size = i, 0
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size += s
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if len(est) > i0:
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chunks.append((i0, len(est)))
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return chunks
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# ------------------------------------------------------------------------------------------------ emission
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class Emitter:
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"""C for the functions of one module. starts is the set of every function start of the module."""
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def __init__(self, mod, starts, patched=None, reg_locals=regs.LOCALS, callee_saved=True, spins=None):
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self.mod = mod
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self.starts = starts
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self.patched = patched or {} # {address: (set index, [replacement words])} (recomp/patches.py)
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self.spins = spins or {} # {spin wait back-edge: its head} (recomp/patches.py `spin`)
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self.reg_locals = reg_locals # recomp/regs.py: registers per function in C locals
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self.kept = regs.CALLEE_SAVED if callee_saved else frozenset() # not reloaded after a call
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self.uses_patches = False
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self.stats = Counter()
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self.unsupported = Counter()
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def scan(self, insns, entry, end):
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"""Labels and jump tables of one function: {pc: sorted targets} for resolved tables, 'all' for an
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unresolved computed br."""
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mod, labels, tables = self.mod, set(), {}
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for i, ins in enumerate(insns):
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k = ins.kind
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if k in ('b', 'bcond'):
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if entry <= ins.target < end:
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labels.add(ins.target)
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elif k == 'br':
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a = entry + 4 * i
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jt = jumptables.resolve(mod, a, entry, end)
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if jt:
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tables[a] = jt
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labels.update(jt)
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self.stats['jump_tables'] += 1
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self.stats['jump_table_targets'] += len(jt)
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elif jumptables.is_computed(mod, a, entry):
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tables[a] = 'all'
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self.stats['all_label_fallbacks'] += 1
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else:
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self.stats['br_dispatch'] += 1
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elif k == 'trap':
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self.stats['traps'] += 1
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c = ins.code
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if c.startswith('rt_udf') and '/*' in c:
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self.stats['unsupported'] += 1
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msg = c[c.index('/*') + 2:c.rindex('*/')].strip()
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self.unsupported[re.sub(r'\b[0-9a-f]{8}\b', '', msg).strip()] += 1
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elif k == 'asm':
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raise ValueError(f'{entry + 4 * i:#x}: asm instruction from the portable lifter')
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return labels, tables
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def replacements(self, a):
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"""Lifted replacement words of the patched site a."""
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return [self.mod.lifter.lift(w, a) for w in self.patched[a][1]]
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@staticmethod
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def flow(insns, entry, end, tables):
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"""Successors of each instruction inside the function [entry, end). Index len(insns) stands for falling
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through into the next function and has none."""
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def idx(t):
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return [(t - entry) // 4] if entry <= t < end else []
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succ = []
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for i, ins in enumerate(insns):
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k = ins.kind
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if k in ('op', 'bl', 'blr'):
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succ.append([i + 1])
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elif k == 'b':
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succ.append(idx(ins.target))
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elif k == 'bcond':
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succ.append(idx(ins.target) + [i + 1])
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elif k == 'br':
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jt = tables.get(entry + 4 * i)
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succ.append([t for x in jt for t in idx(x)] if jt and jt != 'all' else [])
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else: # ret, trap
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succ.append([])
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succ.append([])
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return succ
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def flag_plan(self, insns, entry, end, tables, succ):
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"""recomp/flags.py plan for the function: each instruction's flag use over the flow succ (flow())."""
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n = len(insns)
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calls, effects, exits = set(), [], {n}
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for i, ins in enumerate(insns):
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k, a = ins.kind, entry + 4 * i
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if k in ('bl', 'blr'):
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calls.add(i)
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elif k in ('b', 'bcond') and not entry <= ins.target < end:
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exits.add(i)
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elif k == 'br':
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exits.add(i) # through rt_dispatch, also a table's default
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if a in self.patched:
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effects.append(self.patched_effect(ins, a))
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if any(r.kind == 'bl' for r in self.replacements(a)):
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calls.add(i)
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else:
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effects.append(flags.effect(ins.cond if k == 'bcond' else ins.code or ''))
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effects.append((False, None))
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return flags.plan(effects, succ, calls, exits)
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def patched_effect(self, ins, a):
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"""Flag effect of a patched site: both alternatives must have the same one, in at most one word each."""
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alts = []
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for words in ([ins], self.replacements(a)):
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fx = [flags.effect(w.code or '') for w in words if w.kind == 'op']
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fx = [e for e in fx if e[0] or e[1]]
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if len(fx) > 1:
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raise patches.PatchError(f'{a:#x}: several flag-using words in one alternative')
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alts.append(fx[0] if fx else (False, None))
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if alts[0][1] != alts[1][1]:
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raise patches.PatchError(f'{a:#x}: the alternatives write different flags ({alts[0][1]}, {alts[1][1]})')
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if (alts[0][1] or alts[0][0] or alts[1][0]) and ins.kind == 'bl':
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raise patches.PatchError(f'{a:#x}: a patched call that uses flags')
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return alts[0][0] or alts[1][0], alts[0][1]
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def function(self, entry, end):
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"""(lines of C, referenced function starts) for the guest function [entry, end)."""
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mod, starts = self.mod, self.starts
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insns = [mod.lift(a) for a in range(entry, end, 4)]
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labels, tables = self.scan(insns, entry, end)
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refs = set()
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all_labels = 'all' in tables.values()
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if all_labels:
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labels = set(range(entry, end, 4))
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# An unresolved computed br re-enters the function through fb_<entry>, a C function of its own, which local
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# flags would not survive; such functions keep NZCV in c->nzcv.
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# The same holds for registers in locals (recomp/regs.py): fb_<entry> keeps them in the Cpu too.
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local = not all_labels
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spill, reload, reload_call = (regs.SPILL, regs.RELOAD, regs.RELOAD_CALL) if local else ('', '', '')
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succ = self.flow(insns, entry, end, tables) if local else None
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fp = self.flag_plan(insns, entry, end, tables, succ) if local else None
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if fp and fp.used:
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self.stats['local_flag_functions'] += 1
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self.stats['flag_reads_direct'] += sum(1 for k in fp.reader if k and k != 'nz')
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self.stats['flag_reads_packed'] += sum(1 for k in fp.reader if k == 'nz')
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self.stats['flag_entry_functions'] += fp.entry
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self.stats['flag_entry_reads'] += fp.entry_read
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self.stats['flag_reads_after_call'] += fp.after_call
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self.stats['flag_publishing_exits'] += sum(1 for k in fp.exit if k)
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def fx(i, code):
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return fp.rewrite(i, code) if fp and fp.used else code
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def publish(i):
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return fp.publish(i) if fp and fp.used else ''
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def jump(t, i):
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if entry <= t < end:
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return f'goto L_{t:x};'
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if t in starts:
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refs.add(t)
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return f'{publish(i)}{spill}{MUSTTAIL} {fname(t)}(c);'
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self.stats['external_branches'] += 1
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return f'{publish(i)}{spill}c->pc = {hx(t)}; {MUSTTAIL} rt_dispatch(c);'
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if all_labels:
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# An unresolved computed br re-enters the function through fb_<entry>, which switches on c->pc to any
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# instruction. A goto to a shared dispatch block inside the body instead turns every instruction into
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# a loop header, and clang's loop passes then take tens of seconds on one function.
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fb = f'fb_{entry:x}'
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cases = ' '.join(f'case {hx(t)}: goto L_{t:x};' for t in range(entry, end, 4))
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redispatch = f'{MUSTTAIL} {fb}(c);'
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out = [f'static void {fb}(Cpu *c);',
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f'void {fname(entry)}(Cpu *c) {{', f' FN_ENTER({hx(entry)});', f' c->pc = {hx(entry)};',
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f' {redispatch}', '}',
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f'static void {fb}(Cpu *c) {{', f' switch (c->pc) {{ {cases} default: break; }}',
|
|
f' {MUSTTAIL} rt_dispatch(c);']
|
|
else:
|
|
redispatch = f'{MUSTTAIL} rt_dispatch(c);'
|
|
out = [f'void {fname(entry)}(Cpu *c) {{', f' FN_ENTER({hx(entry)});']
|
|
if fp.used:
|
|
out.append(' ' + fp.decl())
|
|
|
|
def call(t, a):
|
|
if t in starts:
|
|
refs.add(t)
|
|
return f'c->x[30] = {hx(a + 4)}; {spill}{fname(t)}(c);{reload_call}'
|
|
self.stats['external_calls'] += 1
|
|
return f'c->x[30] = {hx(a + 4)}; {spill}c->pc = {hx(t)}; rt_dispatch(c);{reload_call}'
|
|
|
|
def op(i, code):
|
|
code = fx(i, code)
|
|
return f'{spill}{code}{reload}' if regs.ESCAPE.search(code) else code
|
|
|
|
def patch(i, ins, a):
|
|
"""if (switch) { replacement } else { original } for a patched site (recomp/patches.py)."""
|
|
k, words = self.patched[a]
|
|
if ins.kind not in ('op', 'bl'):
|
|
raise patches.PatchError(f'{a:#x}: patched instruction is a {ins.kind}')
|
|
repl = []
|
|
for j, (w, r) in enumerate(zip(words, self.replacements(a))):
|
|
if r.kind == 'op':
|
|
repl.append(op(i, r.code))
|
|
elif r.kind == 'bl' and j == len(words) - 1:
|
|
repl.append(call(r.target, a))
|
|
else:
|
|
raise patches.PatchError(f'{a:#x}: replacement word {w:08x} is a {r.kind}')
|
|
orig = op(i, ins.code) if ins.kind == 'op' else call(ins.target, a)
|
|
self.uses_patches = True
|
|
self.stats['patched_sites'] += 1
|
|
return f' if (rt_patch_on[{k}]) {{ {" ".join(repl)} }} else {{ {orig} }}'
|
|
|
|
body = [] # (instruction index or None for a label, line); a line belongs to the instruction it lifts
|
|
|
|
def emit(i, line):
|
|
body.append((i, line))
|
|
|
|
k = None
|
|
for i, ins in enumerate(insns):
|
|
a = entry + 4 * i
|
|
if a in labels:
|
|
emit(None, f'L_{a:x}:;')
|
|
k = ins.kind
|
|
if a in self.patched:
|
|
emit(i, patch(i, ins, a))
|
|
elif k == 'op':
|
|
emit(i, ' ' + op(i, ins.code))
|
|
elif k == 'trap':
|
|
emit(i, f' {spill}{fx(i, ins.code)}')
|
|
elif k in ('b', 'bcond'):
|
|
j = jump(ins.target, i)
|
|
if self.spins.get(a) == ins.target and entry <= ins.target < end:
|
|
j = f'rt_spin_gate(c, {hx(ins.target)}); {j}' # a pass of a spin wait
|
|
self.stats['spin_gates'] += 1
|
|
emit(i, ' ' + j if k == 'b' else f' if ({fx(i, ins.cond)}) {{ {j} }}')
|
|
elif k == 'bl':
|
|
emit(i, ' ' + call(ins.target, a))
|
|
elif k == 'blr':
|
|
emit(i, f' c->pc = {ins.target}; c->x[30] = {hx(a + 4)}; {spill}rt_dispatch(c);{reload_call}')
|
|
elif k == 'br':
|
|
jt = tables.get(a)
|
|
if jt == 'all':
|
|
emit(i, f' c->pc = {ins.target}; {redispatch}')
|
|
elif jt:
|
|
cases = ' '.join(f'case {hx(t)}: goto L_{t:x};' for t in jt)
|
|
emit(i, f' switch ({ins.target}) {{ {cases} default: break; }}')
|
|
emit(i, f' {publish(i)}{spill}c->pc = {ins.target}; {redispatch}')
|
|
else:
|
|
emit(i, f' {publish(i)}{spill}c->pc = {ins.target}; {MUSTTAIL} rt_dispatch(c);')
|
|
elif k == 'ret':
|
|
emit(i, f' {spill}return;')
|
|
else:
|
|
raise ValueError(f'{a:#x}: unknown instruction kind {k!r}')
|
|
n = len(insns)
|
|
if k not in TERMINATORS: # falls through into the next function
|
|
if end < mod.hi:
|
|
emit(n, ' ' + jump(end, n))
|
|
else:
|
|
emit(n, f' {spill}rt_udf(c, {hx(end)});')
|
|
if local:
|
|
texts = [''] * (n + 1)
|
|
for i, line in body:
|
|
if i is not None:
|
|
texts[i] += line
|
|
clean = {i for i, ins in enumerate(insns) if entry + 4 * i not in self.patched
|
|
and (ins.kind in ('bl', 'blr') or (ins.kind == 'op' and regs.RELOAD in texts[i]))}
|
|
rp = regs.plan(texts, succ, clean, self.reg_locals, self.kept)
|
|
if rp.regs:
|
|
out.append(' ' + rp.decl())
|
|
self.stats['local_reg_functions'] += bool(rp.regs)
|
|
self.stats['reg_spills'] += sum(len(s) for s in rp.spill)
|
|
out += [line if i is None else rp.resolve(i, line) for i, line in body]
|
|
else:
|
|
out += [line for _, line in body]
|
|
out.append('}')
|
|
self.stats['functions'] += 1
|
|
self.stats['instructions'] += len(insns)
|
|
return out, refs
|
|
|
|
|
|
def chunk_text(name, number, emitter, fns):
|
|
"""C text of one chunk. fns: [(entry, end)]."""
|
|
body, refs = [], set()
|
|
emitter.uses_patches = False
|
|
for entry, end in fns:
|
|
lines, r = emitter.function(entry, end)
|
|
body.append('\n'.join(lines))
|
|
refs |= r
|
|
# Every referenced function gets a prototype, including ones defined later in this chunk.
|
|
protos = ''.join(f'void {fname(r)}(Cpu *c);\n' for r in sorted(refs))
|
|
if emitter.uses_patches:
|
|
protos += 'extern uint8_t rt_patch_on[];\n'
|
|
return (header(f'{name} chunk {number:04d}') + '#include "cpu.h"\n#include "simd.h"\n\n' + protos + '\n'
|
|
+ '\n\n'.join(body) + '\n')
|
|
|
|
|
|
def write_if_changed(path, text):
|
|
"""Returns True if the file was written. An unchanged file keeps its mtime, so the build skips it. A changed one
|
|
is written under a temporary name and renamed into place, so a reader never sees it half written."""
|
|
data = text.encode()
|
|
try:
|
|
if path.stat().st_size == len(data) and path.read_bytes() == data:
|
|
return False
|
|
except FileNotFoundError:
|
|
pass
|
|
tmp = path.with_name(f'.{path.name}.{os.getpid()}.tmp')
|
|
tmp.write_bytes(data)
|
|
try:
|
|
_retry(os.replace, tmp, path)
|
|
except OSError:
|
|
tmp.unlink(missing_ok=True)
|
|
raise
|
|
return True
|
|
|
|
|
|
def _retry(fn, *args):
|
|
"""Windows refuses to rewrite or delete a file another process has open or mapped (clang maps its sources, so a
|
|
build running on the output holds them; so can a scanner or an editor). Waits up to 30 s for it."""
|
|
for i in range(120):
|
|
try:
|
|
return fn(*args)
|
|
except OSError as e:
|
|
if i == 119 or isinstance(e, FileNotFoundError):
|
|
raise
|
|
time.sleep(0.25)
|
|
|
|
|
|
# ------------------------------------------------------------------------------------------------ workers
|
|
|
|
_W = {} # worker state: 'mods' {name: (path, base)}, 'starts' {name: sorted array}, 'emitters' {name: Emitter}
|
|
|
|
|
|
def _worker_init(mods, starts, table, opts):
|
|
_W['mods'] = mods
|
|
_W['starts'] = starts
|
|
_W['patches'] = table
|
|
_W['opts'] = opts # Emitter keyword arguments
|
|
_W['emitters'] = {}
|
|
|
|
|
|
def _emitter(name):
|
|
e = _W['emitters'].get(name)
|
|
if e is None:
|
|
path, base = _W['mods'][name]
|
|
mod = Module(name, path, base, 'c')
|
|
e = _W['emitters'][name] = Emitter(mod, set(_W['starts'][name].tolist()),
|
|
_W['patches'].for_module(name, base),
|
|
spins=_W['patches'].spins_for(name, base), **_W['opts'])
|
|
return e
|
|
|
|
|
|
def _emit_chunk(task):
|
|
"""Worker: write one chunk. Returns its statistics."""
|
|
name, number, path, fns = task
|
|
t0 = time.perf_counter()
|
|
e = _emitter(name)
|
|
e.stats.clear()
|
|
e.unsupported.clear()
|
|
text = chunk_text(name, number, e, fns)
|
|
error = None
|
|
try:
|
|
written = write_if_changed(Path(path), text)
|
|
except OSError as ex:
|
|
written, error = False, f'{path}: {ex}'
|
|
return {'module': name, 'number': number, 'file': Path(path).name, 'functions': len(fns), 'bytes': len(text),
|
|
'written': written, 'error': error, 'seconds': time.perf_counter() - t0, 'stats': dict(e.stats),
|
|
'unsupported': dict(e.unsupported)}
|
|
|
|
|
|
# ------------------------------------------------------------------------------------------------ driver
|
|
|
|
def table_text(name, addrs):
|
|
lines = [header(f'{name} function table'), '#include "cpu.h"\n\n']
|
|
lines += [f'void {fname(a)}(Cpu *c);\n' for a in addrs]
|
|
lines.append(f'\nconst uint64_t {name}_fn_addrs[] = {{\n')
|
|
lines.append(',\n'.join(hx(a) for a in addrs))
|
|
lines.append(f'\n}};\nconst GuestFn {name}_fn_ptrs[] = {{\n')
|
|
lines.append(',\n'.join(fname(a) for a in addrs))
|
|
lines.append(f'\n}};\nconst uint64_t {name}_fn_count = {len(addrs)};\n')
|
|
return ''.join(lines)
|
|
|
|
|
|
def remove_stale(moddir, name, nchunks, errors):
|
|
"""Delete chunks an earlier run wrote beyond this run's count, and temporary files an interrupted run left."""
|
|
pat = re.compile(re.escape(name) + r'_(\d{4})\.c')
|
|
removed = 0
|
|
for p in moddir.iterdir():
|
|
m = pat.fullmatch(p.name)
|
|
if (m and int(m.group(1)) >= nchunks) or (p.name.startswith('.') and p.name.endswith('.tmp')):
|
|
try:
|
|
_retry(p.unlink)
|
|
removed += 1
|
|
except OSError as ex:
|
|
errors.append(f'{p}: {ex}')
|
|
return removed
|
|
|
|
|
|
# Peak memory of one emit worker on 1.4.3 is 1.3 GiB (1.5 GiB with margin); the parent holds about 0.7 GiB.
|
|
WORKER_MEM = 1536 << 20
|
|
MEM_SHARE = 0.8 # of the free memory the workers may take, the rest is for the system and other programs
|
|
|
|
|
|
def pick_jobs(requested):
|
|
"""Worker count and the reason for it: --jobs if given, else the CPU count capped by the free memory."""
|
|
if requested:
|
|
return requested, '--jobs'
|
|
cpus = os.cpu_count() or 4
|
|
free = hostmem.available_ram()
|
|
if free is None:
|
|
return cpus, f'{cpus} CPUs, free memory unknown'
|
|
by_mem = max(1, int(free * MEM_SHARE) // WORKER_MEM)
|
|
return min(cpus, by_mem), f'{cpus} CPUs, {free / 2**30:.1f} GiB free memory allows {by_mem}'
|
|
|
|
|
|
def main():
|
|
ap = argparse.ArgumentParser(description=__doc__.splitlines()[0])
|
|
ap.add_argument('--exefs', type=Path, required=True)
|
|
ap.add_argument('--out', type=Path, required=True)
|
|
ap.add_argument('--modules', default='main,subsdk0,sdk')
|
|
ap.add_argument('--jobs', type=int, help='emit workers (default: by free memory and CPU count)')
|
|
ap.add_argument('--limit', type=int, default=0, help='emit only the first N functions of each module')
|
|
ap.add_argument('--chunk-fns', type=int, default=3000, help='functions per chunk at most')
|
|
ap.add_argument('--chunk-bytes', type=int, default=3000000, help='estimated bytes of C per chunk')
|
|
ap.add_argument('--big-fn', type=int, default=300000, help='estimated bytes of C from which a function gets '
|
|
'its own chunk')
|
|
ap.add_argument('--patches', type=Path, help='code patch table (recomp/patches.py)')
|
|
ap.add_argument('--reg-locals', type=int, default=regs.LOCALS,
|
|
help=f'guest registers per function kept in C locals (recomp/regs.py; default {regs.LOCALS}, 0: none)')
|
|
ap.add_argument('--no-callee-saved-trust', action='store_true',
|
|
help='reload X19-X29 and SP after every call too, instead of trusting AAPCS64 (slower; for '
|
|
'telling a broken callee from a generator bug)')
|
|
args = ap.parse_args()
|
|
opts = {'reg_locals': args.reg_locals, 'callee_saved': not args.no_callee_saved_trust}
|
|
|
|
t0 = time.perf_counter()
|
|
mods = layout(args.exefs)
|
|
write_layout(mods, args.out)
|
|
table = patches.load(args.patches, mods) if args.patches else patches.Table()
|
|
write_if_changed(args.out / 'patches.h', patches.header_text(table, GENERATED_MARKER))
|
|
want = args.modules.split(',')
|
|
unknown = set(want) - {n for n, _, _ in mods}
|
|
if unknown:
|
|
raise SystemExit(f'not in {args.exefs}: {", ".join(sorted(unknown))}')
|
|
|
|
paths, starts_abs, info, tasks = {}, {}, {}, []
|
|
for name, base, _ in mods:
|
|
if name not in want:
|
|
continue
|
|
t = time.perf_counter()
|
|
path = args.exefs / name
|
|
mod = Module(name, path, base, 'c')
|
|
patches.check(table, mod, name)
|
|
starts, dstats = discover(mod)
|
|
est = estimate_sizes(mod, starts)
|
|
abs_starts = mod.lo + starts * 4
|
|
n = len(starts) if not args.limit else min(args.limit, len(starts))
|
|
ends = np.append(abs_starts[1:], mod.hi)
|
|
chunks = partition(est[:n], args.chunk_fns, args.chunk_bytes, args.big_fn)
|
|
moddir = args.out / name
|
|
moddir.mkdir(parents=True, exist_ok=True)
|
|
for number, (i0, i1) in enumerate(chunks):
|
|
fns = list(zip(abs_starts[i0:i1].tolist(), ends[i0:i1].tolist()))
|
|
tasks.append((int(est[i0:i1].sum()), (name, number, str(moddir / f'{name}_{number:04d}.c'), fns)))
|
|
paths[name] = (str(path), base)
|
|
starts_abs[name] = abs_starts
|
|
info[name] = {'base': base, 'lo': mod.lo, 'hi': mod.hi, 'emitted': abs_starts[:n].tolist(),
|
|
'chunks': len(chunks), 'discover': dstats, 'discover_seconds': time.perf_counter() - t,
|
|
'moddir': moddir}
|
|
print(f'{name}: {dstats["functions"]} functions ({dstats["seeds"]} seeds, {dstats["rounds"]} rounds), '
|
|
f'{len(chunks)} chunks, discovery {time.perf_counter() - t:.1f}s', file=sys.stderr, flush=True)
|
|
del mod
|
|
|
|
# Largest chunks first, so the pool does not end on a long tail.
|
|
tasks.sort(key=lambda t: -t[0])
|
|
results = {name: [] for name in info}
|
|
done_at, errors = {}, []
|
|
t_emit = time.perf_counter()
|
|
ctx = mp.get_context('spawn')
|
|
jobs, why = pick_jobs(args.jobs)
|
|
print(f'emitting with {jobs} workers ({why})', file=sys.stderr, flush=True)
|
|
with ctx.Pool(jobs, initializer=_worker_init, initargs=(paths, starts_abs, table, opts)) as pool:
|
|
for i, r in enumerate(pool.imap_unordered(_emit_chunk, [t for _, t in tasks], chunksize=1)):
|
|
results[r['module']].append(r)
|
|
if r['error']:
|
|
errors.append(r['error'])
|
|
done_at[r['module']] = time.perf_counter() - t_emit
|
|
if (i + 1) % 200 == 0 or i + 1 == len(tasks):
|
|
print(f'emitted {i + 1}/{len(tasks)} chunks, {time.perf_counter() - t_emit:.0f}s', file=sys.stderr,
|
|
flush=True)
|
|
|
|
for name, d in info.items():
|
|
rs = sorted(results[name], key=lambda r: r['number'])
|
|
moddir = d['moddir']
|
|
stats, unsupported = Counter(), Counter()
|
|
for r in rs:
|
|
stats.update(r['stats'])
|
|
unsupported.update(r['unsupported'])
|
|
t = time.perf_counter()
|
|
table_written = write_if_changed(moddir / f'{name}_table.c', table_text(name, d['emitted']))
|
|
removed = remove_stale(moddir, name, d['chunks'], errors)
|
|
manifest = {
|
|
'module': name,
|
|
'marker': GENERATED_MARKER,
|
|
'base': f'{d["base"]:#x}',
|
|
'text': [f'{d["lo"]:#x}', f'{d["hi"]:#x}'],
|
|
'function_count': len(d['emitted']),
|
|
'chunks': [r['file'] for r in rs],
|
|
'table': f'{name}_table.c',
|
|
'chunk_info': [{'file': r['file'], 'functions': r['functions'], 'bytes': r['bytes'],
|
|
'seconds': round(r['seconds'], 2)} for r in rs],
|
|
'stats': {
|
|
**d['discover'],
|
|
'emitted_functions': stats['functions'],
|
|
'instructions': stats['instructions'],
|
|
'jump_tables': stats['jump_tables'],
|
|
'jump_table_targets': stats['jump_table_targets'],
|
|
'all_label_fallbacks': stats['all_label_fallbacks'],
|
|
'br_dispatch': stats['br_dispatch'],
|
|
'traps': stats['traps'],
|
|
'patched_sites': stats['patched_sites'],
|
|
'local_flag_functions': stats['local_flag_functions'],
|
|
'flag_reads_direct': stats['flag_reads_direct'],
|
|
'flag_reads_packed': stats['flag_reads_packed'],
|
|
'flag_entry_functions': stats['flag_entry_functions'],
|
|
'flag_entry_reads': stats['flag_entry_reads'],
|
|
'flag_reads_after_call': stats['flag_reads_after_call'],
|
|
'flag_publishing_exits': stats['flag_publishing_exits'],
|
|
'spin_gates': stats['spin_gates'],
|
|
'unsupported': stats['unsupported'],
|
|
'external_branches': stats['external_branches'],
|
|
'external_calls': stats['external_calls'],
|
|
'c_bytes': sum(r['bytes'] for r in rs),
|
|
'largest_chunk_bytes': max((r['bytes'] for r in rs), default=0),
|
|
'chunks_written': sum(r['written'] for r in rs) + table_written,
|
|
'stale_chunks_removed': removed,
|
|
},
|
|
'unsupported_census': dict(unsupported.most_common(50)),
|
|
'timings': {
|
|
'discover_s': round(d['discover_seconds'], 2),
|
|
'emit_wall_s': round(done_at.get(name, 0.0), 2),
|
|
'emit_worker_s': round(sum(r['seconds'] for r in rs), 2),
|
|
'table_s': round(time.perf_counter() - t, 2),
|
|
},
|
|
}
|
|
write_if_changed(moddir / 'manifest.json', json.dumps(manifest, indent=1) + '\n')
|
|
s = manifest['stats']
|
|
print(f'{name}: {s["emitted_functions"]} functions, {len(rs)} chunks, {s["c_bytes"] / 1e6:.0f} MB of C, '
|
|
f'{s["jump_tables"]} jump tables, {s["all_label_fallbacks"]} all-label fallbacks, '
|
|
f'{s["br_dispatch"]} br via dispatch, {s["traps"]} traps ({s["unsupported"]} unsupported)',
|
|
file=sys.stderr)
|
|
print(f'total {time.perf_counter() - t0:.0f}s', file=sys.stderr)
|
|
if errors:
|
|
print(f'{len(errors)} files could not be written or removed (held open by another process?):',
|
|
file=sys.stderr)
|
|
for e in errors:
|
|
print(f' {e}', file=sys.stderr)
|
|
return 1
|
|
return 0
|
|
|
|
|
|
if __name__ == '__main__':
|
|
sys.exit(main())
|