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https://github.com/darlinghq/darling-dyld.git
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47 lines
2.6 KiB
Python
47 lines
2.6 KiB
Python
#!/usr/bin/python2.7
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import os
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import KernelCollection
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# This verifies that a kext can bind to another kext
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# foo.kext exports foo and bar.kext uses it
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def check(kernel_cache):
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kernel_cache.buildKernelCollection("arm64", "/kext-bind-to-kext/main.kc", "/kext-bind-to-kext/main.kernel", "/kext-bind-to-kext/extensions", ["com.apple.foo", "com.apple.bar"], [])
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kernel_cache.analyze("/kext-bind-to-kext/main.kc", ["-layout", "-arch", "arm64"])
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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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# bar.kext
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assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.bar"
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assert len(kernel_cache.dictionary()["dylibs"][1]["segments"]) == 4
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assert kernel_cache.dictionary()["dylibs"][1]["segments"][2]["name"] == "__DATA"
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assert kernel_cache.dictionary()["dylibs"][1]["segments"][2]["vmAddr"] == "0x1C000"
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# foo.kext
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assert kernel_cache.dictionary()["dylibs"][2]["name"] == "com.apple.foo"
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kernel_cache.analyze("/kext-bind-to-kext/main.kc", ["-symbols", "-arch", "arm64"])
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assert kernel_cache.dictionary()["dylibs"][2]["name"] == "com.apple.foo"
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assert kernel_cache.dictionary()["dylibs"][2]["global-symbols"][0]["name"] == "_foo"
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assert kernel_cache.dictionary()["dylibs"][2]["global-symbols"][0]["vmAddr"] == "0x14020"
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# Check the fixups
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kernel_cache.analyze("/kext-bind-to-kext/main.kc", ["-fixups", "-arch", "arm64"])
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assert len(kernel_cache.dictionary()["fixups"]) == 1
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assert kernel_cache.dictionary()["fixups"]["0x1C000"] == "kc(0) + 0x14020"
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assert len(kernel_cache.dictionary()["dylibs"]) == 3
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assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
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assert kernel_cache.dictionary()["dylibs"][0]["fixups"] == "none"
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assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.bar"
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assert kernel_cache.dictionary()["dylibs"][1]["fixups"] == "none"
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assert kernel_cache.dictionary()["dylibs"][2]["name"] == "com.apple.foo"
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assert kernel_cache.dictionary()["dylibs"][2]["fixups"] == "none"
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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 -Wl,-no_data_const 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 -Wl,-no_data_const bar.c -o extensions/bar.kext/bar
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# [~]> rm -r extensions/*.kext/*.ld
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