testing/kernel-cache-tests/kext-bind-to-kext-old-section-type/test.py

   1 #!/usr/bin/python2.7
   2
   3 import os
   4 import KernelCollection
   5
   6 # This tests that the very old bar.kext can be parsed.  It's __got section has a S_NON_LAZY_SYMBOL_POINTERS type,
   7 # but newer linkers changed to just S_REGULAR.
   8
   9 def check(kernel_cache):
  10     kernel_cache.buildKernelCollection("x86_64", "/kext-bind-to-kext-old-section-type/main.kc", "/kext-bind-to-kext-old-section-type/main.kernel", "/kext-bind-to-kext-old-section-type/extensions", ["com.apple.foo", "com.apple.bar"], [])
  11     kernel_cache.analyze("/kext-bind-to-kext-old-section-type/main.kc", ["-layout", "-arch", "x86_64"])
  12
  13     assert len(kernel_cache.dictionary()["dylibs"]) == 3
  14     # main.kernel
  15     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
  16     # foo.kext
  17     assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.foo"
  18     # bar.kext
  19     assert kernel_cache.dictionary()["dylibs"][2]["name"] == "com.apple.bar"
  20     assert len(kernel_cache.dictionary()["dylibs"][2]["segments"]) == 3
  21     assert kernel_cache.dictionary()["dylibs"][2]["segments"][1]["name"] == "__DATA"
  22     assert kernel_cache.dictionary()["dylibs"][2]["segments"][1]["vmAddr"] == "0x19000"
  23
  24     kernel_cache.analyze("/kext-bind-to-kext-old-section-type/main.kc", ["-symbols", "-arch", "x86_64"])
  25     assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.foo"
  26     assert kernel_cache.dictionary()["dylibs"][1]["global-symbols"][0]["name"] == "_foo"
  27     assert kernel_cache.dictionary()["dylibs"][1]["global-symbols"][0]["vmAddr"] == "0x14000"
  28
  29     # Check the fixups
  30     kernel_cache.analyze("/kext-bind-to-kext-old-section-type/main.kc", ["-fixups", "-arch", "x86_64"])
  31     assert len(kernel_cache.dictionary()["fixups"]) == 1
  32     assert kernel_cache.dictionary()["fixups"]["0x15000"] == "kc(0) + 0x14000"
  33     assert len(kernel_cache.dictionary()["dylibs"]) == 3
  34     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
  35     assert kernel_cache.dictionary()["dylibs"][0]["fixups"] == "none"
  36     assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.foo"
  37     assert kernel_cache.dictionary()["dylibs"][1]["fixups"] == "none"
  38     assert kernel_cache.dictionary()["dylibs"][2]["name"] == "com.apple.bar"
  39     assert kernel_cache.dictionary()["dylibs"][2]["fixups"] == "none"
  40
  41
  42 # Note, bar.kext has to be linked with a very old linker from 10.7 to get the __got section with S_NON_LAZY_SYMBOL_POINTERS.
  43 # [~]> xcrun -sdk macosx.internal cc -arch x86_64 -Wl,-static -Wl,-kernel -mkernel -nostdlib -Wl,-add_split_seg_info -Wl,-rename_section,__TEXT,__text,__HIB,__text -Wl,-e,__start -Wl,-pagezero_size,0x0 -Wl,-pie main.c -o main.kernel -Wl,-install_name,/usr/lib/swift/split.seg.v2.hack -Wl,-segprot,__HIB,r-x,r-x -Wl,-image_base,0x8000 -Wl,-segaddr,__HIB,0x4000
  44 # [~]> xcrun -sdk macosx.internal cc -arch x86_64 -Wl,-kext -mkernel -nostdlib -Wl,-add_split_seg_info -Wl,-no_data_const foo.c -o extensions/foo.kext/foo
  45 # [~]> xcrun -sdk macosx.internal cc -arch x86_64 -Wl,-kext -mkernel -nostdlib -Wl,-add_split_seg_info -Wl,-no_data_const bar.c -o extensions/bar.kext/bar -fuse-ld=...
  46