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40 lines
2.3 KiB
Python
40 lines
2.3 KiB
Python
#!/usr/bin/python2.7
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import os
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import KernelCollection
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# __DATA should be packed at sub-page alignment
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# But only in the kexts. The kernel pages should not be packed
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def check(kernel_cache):
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kernel_cache.buildKernelCollection("arm64", "/packed-kext-text/main.kc", "/packed-kext-text/main.kernel", "/packed-kext-text/extensions", ["com.apple.foo", "com.apple.bar"], [])
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kernel_cache.analyze("/packed-kext-text/main.kc", ["-layout", "-arch", "arm64"])
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assert kernel_cache.dictionary()["cache-segments"][2]["name"] == "__TEXT_EXEC"
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assert kernel_cache.dictionary()["cache-segments"][2]["vmAddr"] == "0x8000"
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assert kernel_cache.dictionary()["cache-segments"][2]["vmSize"] == "0xC000"
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assert len(kernel_cache.dictionary()["dylibs"]) == 3
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# main.kernel
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assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
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assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["name"] == "__TEXT_EXEC"
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assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["vmAddr"] == "0xC000"
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assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["vmSize"] == "0x4000"
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# bar.kext
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assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.bar"
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assert kernel_cache.dictionary()["dylibs"][1]["segments"][1]["name"] == "__TEXT_EXEC"
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assert kernel_cache.dictionary()["dylibs"][1]["segments"][1]["vmAddr"] == "0x10000"
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assert kernel_cache.dictionary()["dylibs"][1]["segments"][1]["vmSize"] == "0x20"
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# foo.kext
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assert kernel_cache.dictionary()["dylibs"][2]["name"] == "com.apple.foo"
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assert kernel_cache.dictionary()["dylibs"][2]["segments"][1]["name"] == "__TEXT_EXEC"
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assert kernel_cache.dictionary()["dylibs"][2]["segments"][1]["vmAddr"] == "0x10020"
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assert kernel_cache.dictionary()["dylibs"][2]["segments"][1]["vmSize"] == "0xC"
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# [~]> xcrun -sdk iphoneos.internal cc -arch arm64 -Wl,-static -mkernel -nostdlib -Wl,-add_split_seg_info -Wl,-rename_section,__TEXT,__text,__TEXT_EXEC,__text -Wl,-e,__start -Wl,-pagezero_size,0x0 -Wl,-pie main.c -o main.kernel
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# [~]> xcrun -sdk iphoneos.internal cc -arch arm64 -Wl,-kext -mkernel -nostdlib -Wl,-add_split_seg_info foo.c -o extensions/foo.kext/foo
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# [~]> xcrun -sdk iphoneos.internal cc -arch arm64 -Wl,-kext -mkernel -nostdlib -Wl,-add_split_seg_info bar.c -o extensions/bar.kext/bar
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# [~]> rm -r extensions/*.kext/*.ld
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