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spoopyghosty0
23a47880e0
- reflowed long lines (texts unchanged; generated launcher/PowerShell/README texts byte-identical) - CONTRIBUTING, SECURITY, CODE_OF_CONDUCT, THIRD_PARTY_NOTICES; pyproject metadata (SPDX licence, authors, urls, classifiers, keywords) - maintainer-only notes moved to a git-ignored CLAUDE.local.md; CLAUDE.md facts updated - README: what kinds of apps run and how; INSTALL: PC VR and Files wording, new labels
50 lines
2.0 KiB
Python
50 lines
2.0 KiB
Python
import struct
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import pytest
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from frameport.analysis import elf
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from frameport.analysis.stubgen import build_stub_library
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@pytest.mark.parametrize("abi", ["arm64-v8a", "armeabi-v7a"])
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def test_stub_library(abi):
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lib = build_stub_library(["ovr_B", "ovr_A", "ovrMessageType_ToString"], abi=abi)
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assert elf.is_elf(lib)
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assert elf.is_64bit(lib) == (abi == "arm64-v8a")
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assert elf.soname(lib) == "libovrstubs.so"
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assert elf.dyn_symbols(lib, True) == {"ovr_A", "ovr_B", "ovrMessageType_ToString"}
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assert elf.needed(lib) == []
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# 16 KiB page-aligned loads, dynamic inside the RW load
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loads = elf.load_segments(lib)
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assert all(off % 16384 == va % 16384 for va, off, _ in loads)
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def _with_note(lib: bytes) -> bytes:
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"""Turn the stub's PT_GNU_STACK into a PT_NOTE so add_needed can reuse it (the common case)."""
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buf = bytearray(lib)
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phoff = struct.unpack_from("<Q", buf, 32)[0]
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phentsize, phnum = struct.unpack_from("<H", buf, 54)[0], struct.unpack_from("<H", buf, 56)[0]
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for i in range(phnum):
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if struct.unpack_from("<I", buf, phoff + i * phentsize)[0] == 0x6474E551:
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struct.pack_into("<I", buf, phoff + i * phentsize, 4)
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return bytes(buf)
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@pytest.mark.parametrize("variant", ["reuse_note", "relocate_phdrs"])
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def test_add_needed(variant):
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base = build_stub_library(["ovr_X"], soname="libgame.so")
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base = elf.add_needed(base, "liblog.so") # give it one NEEDED first
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if variant == "reuse_note":
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base = _with_note(base)
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out = elf.add_needed(base, "libglshim.so")
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assert elf.needed(out)[0] == "libglshim.so"
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assert elf.needed(out)[1:] == elf.needed(base)
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assert elf.dyn_symbols(out, True) == {"ovr_X"}
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assert elf.soname(out) == "libgame.so"
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assert out[: len(base)][64:] != b"" and out.startswith(base[:16])
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loads = elf.load_segments(out)
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assert [va for va, _, _ in loads] == sorted(va for va, _, _ in loads)
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assert all(off % 16384 == va % 16384 for va, off, _ in loads)
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# idempotent
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assert elf.add_needed(out, "libglshim.so") == out
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