testing/kernel-cache-tests/kext-bind-to-kext-arm64e-chains/test.py

   1 #!/usr/bin/python2.7
   2
   3 import os
   4 import KernelCollection
   5
   6 # This tests that kexts can bind to each other using DYLD_CHAINED_PTR_ARM64E_KERNEL
   7
   8 def check(kernel_cache):
   9     kernel_cache.buildKernelCollection("arm64e", "/kext-bind-to-kext-arm64e-chains/main.kc", "/kext-bind-to-kext-arm64e-chains/main.kernel", "/kext-bind-to-kext-arm64e-chains/extensions", ["com.apple.foo", "com.apple.bar"], [])
  10     kernel_cache.analyze("/kext-bind-to-kext-arm64e-chains/main.kc", ["-layout", "-arch", "arm64e"])
  11
  12     assert len(kernel_cache.dictionary()["dylibs"]) == 3
  13     # main.kernel
  14     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
  15     # bar.kext
  16     assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.bar"
  17     assert kernel_cache.dictionary()["dylibs"][1]["segments"][3]["name"] == "__DATA_CONST"
  18     assert kernel_cache.dictionary()["dylibs"][1]["segments"][3]["vmAddr"] == "0xFFFFFFF00701C000"
  19     # foo.kext
  20     assert kernel_cache.dictionary()["dylibs"][2]["name"] == "com.apple.foo"
  21
  22     # Symbols
  23     kernel_cache.analyze("/kext-bind-to-kext-arm64e-chains/main.kc", ["-symbols", "-arch", "arm64e"])
  24     # bar.kext
  25     assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.bar"
  26     assert kernel_cache.dictionary()["dylibs"][1]["global-symbols"][1]["name"] == "_fooPtr"
  27     assert kernel_cache.dictionary()["dylibs"][1]["global-symbols"][1]["vmAddr"] == "0xFFFFFFF007028000"
  28     # foo.kext
  29     assert kernel_cache.dictionary()["dylibs"][2]["name"] == "com.apple.foo"
  30     assert kernel_cache.dictionary()["dylibs"][2]["global-symbols"][0]["name"] == "_f"
  31     assert kernel_cache.dictionary()["dylibs"][2]["global-symbols"][0]["vmAddr"] == "0xFFFFFFF007028008"
  32     assert kernel_cache.dictionary()["dylibs"][2]["global-symbols"][1]["name"] == "_foo"
  33     assert kernel_cache.dictionary()["dylibs"][2]["global-symbols"][1]["vmAddr"] == "0xFFFFFFF007018070"
  34
  35     # Check the fixups
  36     kernel_cache.analyze("/kext-bind-to-kext-arm64e-chains/main.kc", ["-fixups", "-arch", "arm64e"])
  37     assert len(kernel_cache.dictionary()["fixups"]) == 4
  38     # __DATA_CONST
  39     # bar.kext: extern int foo();
  40     # bar.kext: extern int f;
  41     assert kernel_cache.dictionary()["fixups"]["0x18000"] == "kc(0) + 0xFFFFFFF007018070 auth(IA addr 0)"
  42     assert kernel_cache.dictionary()["fixups"]["0x18008"] == "kc(0) + 0xFFFFFFF007028008"
  43     # __DATA
  44     # main.kernel: __typeof(&func) funcPtr = &func;
  45     assert kernel_cache.dictionary()["fixups"]["0x20000"] == "kc(0) + 0xFFFFFFF007014000 auth(IA !addr 0)"
  46     # bar.kext: __typeof(&foo) fooPtr = &foo;
  47     assert kernel_cache.dictionary()["fixups"]["0x24000"] == "kc(0) + 0xFFFFFFF007018070 auth(IA !addr 0)"
  48     assert len(kernel_cache.dictionary()["dylibs"]) == 3
  49     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
  50     assert kernel_cache.dictionary()["dylibs"][0]["fixups"] == "none"
  51     assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.bar"
  52     assert kernel_cache.dictionary()["dylibs"][1]["fixups"] == "none"
  53     assert kernel_cache.dictionary()["dylibs"][2]["name"] == "com.apple.foo"
  54     assert kernel_cache.dictionary()["dylibs"][2]["fixups"] == "none"
  55
  56
  57 # [~]> xcrun -sdk iphoneos.internal cc -arch arm64e -Wl,-static -mkernel -Wl,-fixup_chains -Wl,-kernel -nostdlib -Wl,-add_split_seg_info -Wl,-e,__start -Wl,-pie main.c -Wl,-pagezero_size,0x0 -Wl,-rename_section,__TEXT,__text,__TEXT_EXEC,__text -o main.kernel  -Wl,-image_base,0xfffffff007004000 -Wl,-install_name,/usr/lib/swift/split.seg.v2.hack
  58 # [~]> xcrun -sdk iphoneos.internal cc -arch arm64e -Wl,-kext -mkernel -nostdlib -Wl,-add_split_seg_info -Wl,-fixup_chains foo.c -o extensions/foo.kext/foo
  59 # [~]> xcrun -sdk iphoneos.internal cc -arch arm64e -Wl,-kext -mkernel -nostdlib -Wl,-add_split_seg_info -Wl,-fixup_chains bar.c -o extensions/bar.kext/bar
  60 # [~]> rm -r extensions/*.kext/*.ld
  61