rpone
ab11a8cb68
Source-driver and source-storage builds, the arm64e PAC rewrite for the Rust bridge, the IOAccelerator base ABI of 24A446, the bridge with mimalloc and link-time optimisation, the plugin with the prime list, addon options for a prime list, a pipeline pack and cache export, wallpaper overlay and seed changes, and payload, kernel and userdata steps for the new profile.
38 lines
2.0 KiB
Python
38 lines
2.0 KiB
Python
"""Symbol names of the XNU kernel of a build tree, for the archives that must not collide with it."""
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import subprocess
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from pathlib import Path
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OBJ = 'build/xnu/ios-obj/DEVELOPMENT_ARM64_BCM2837'
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def defined_names(paths, global_only):
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"""Defined symbol names of Mach-O files and archives."""
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names = set()
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paths = [str(path) for path in paths]
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for start in range(0, len(paths), 200):
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command = ['xcrun', 'nm', *(['-g'] if global_only else []), '-U', '-j', *paths[start:start + 200]]
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names |= {line.strip() for line in subprocess.check_output(command, text=True).splitlines() if line.startswith('_')}
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return names
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def kernel_names(root, global_only=True):
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"""Names of the XNU kernel alone: the recorded checkpoint kernel if present, else the objects of this tree's XNU link
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(link.filelist, written by every kernel pass before it links). A kernel linked with the archives of this tree would
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contain their own names, so it is not used."""
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root = Path(root)
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checkpoint = root / 'build/xnu/checkpoints/native-4k-user-abi/kernel.macho'
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if checkpoint.is_file():
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return defined_names([checkpoint], global_only)
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filelist = root / OBJ / 'link.filelist'
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if not filelist.is_file():
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raise SystemExit('No XNU symbol names: run a kernel pass first (it writes link.filelist)')
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# A pass whose compile failed leaves its filelist naming objects it did not produce; the next pass rebuilds them and its
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# link sees them, so only the objects that exist are read here.
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objects = [line.strip() for line in filelist.read_text().splitlines() if line.strip()]
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names = defined_names([path for path in objects if Path(path).is_file()], global_only)
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# The link also exports aliases (all-alias.exp: "_real _alias") that no object defines under that name.
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aliases = root / OBJ / 'all-alias.exp'
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if aliases.is_file():
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names |= {word for line in aliases.read_text().splitlines() for word in line.split() if word.startswith('_')}
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return names
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