testing/kernel-cache-tests/hello-world-auxkc/test.py

   1 #!/usr/bin/python2.7
   2
   3 import os
   4 import KernelCollection
   5
   6 # Verify that an auxKC has a reverse vmAddr order
   7
   8 def check(kernel_cache):
   9     # First build a kernel collection
  10     kernel_cache.buildKernelCollection("arm64", "/hello-world-auxkc/main.kc", "/hello-world-auxkc/main.kernel", "/hello-world-auxkc/extensions", [], [])
  11     kernel_cache.analyze("/hello-world-auxkc/main.kc", ["-layout", "-arch", "arm64"])
  12
  13     assert len(kernel_cache.dictionary()["cache-segments"]) == 5
  14     assert kernel_cache.dictionary()["cache-segments"][0]["name"] == "__TEXT"
  15     assert kernel_cache.dictionary()["cache-segments"][0]["vmAddr"] == "0x0"
  16     assert kernel_cache.dictionary()["cache-segments"][1]["name"] == "__PRELINK_TEXT"
  17     assert kernel_cache.dictionary()["cache-segments"][1]["vmAddr"] == "0x4000"
  18     assert kernel_cache.dictionary()["cache-segments"][2]["name"] == "__TEXT_EXEC"
  19     assert kernel_cache.dictionary()["cache-segments"][2]["vmAddr"] == "0x4000"
  20     assert kernel_cache.dictionary()["cache-segments"][3]["name"] == "__PRELINK_INFO"
  21     assert kernel_cache.dictionary()["cache-segments"][3]["vmAddr"] == "0xC000"
  22     assert kernel_cache.dictionary()["cache-segments"][4]["name"] == "__LINKEDIT"
  23     assert kernel_cache.dictionary()["cache-segments"][4]["vmAddr"] == "0x10000"
  24
  25     assert len(kernel_cache.dictionary()["dylibs"]) == 1
  26     # main.kernel
  27     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
  28     assert len(kernel_cache.dictionary()["dylibs"][0]["segments"]) == 3
  29     assert kernel_cache.dictionary()["dylibs"][0]["segments"][0]["name"] == "__TEXT"
  30     assert kernel_cache.dictionary()["dylibs"][0]["segments"][0]["vmAddr"] == "0x4000"
  31     assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["name"] == "__TEXT_EXEC"
  32     assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["vmAddr"] == "0x8000"
  33     assert kernel_cache.dictionary()["dylibs"][0]["segments"][2]["name"] == "__LINKEDIT"
  34     assert kernel_cache.dictionary()["dylibs"][0]["segments"][2]["vmAddr"] == "0x10000"
  35
  36     # Now build an aux cache using the baseline kernel collection
  37     kernel_cache.buildAuxKernelCollection("arm64", "/hello-world-auxkc/aux.kc", "/hello-world-auxkc/main.kc", "", "/hello-world-auxkc/extensions", ["com.apple.foo", "com.apple.bar"], [])
  38     kernel_cache.analyze("/hello-world-auxkc/aux.kc", ["-layout", "-arch", "arm64"])
  39
  40     assert len(kernel_cache.dictionary()["cache-segments"]) == 6
  41     assert kernel_cache.dictionary()["cache-segments"][0]["name"] == "__TEXT"
  42     assert kernel_cache.dictionary()["cache-segments"][0]["vmAddr"] == "0x8000"
  43     assert kernel_cache.dictionary()["cache-segments"][1]["name"] == "__PRELINK_TEXT"
  44     assert kernel_cache.dictionary()["cache-segments"][1]["vmAddr"] == "0xC000"
  45     assert kernel_cache.dictionary()["cache-segments"][2]["name"] == "__TEXT_EXEC"
  46     assert kernel_cache.dictionary()["cache-segments"][2]["vmAddr"] == "0x14000"
  47     assert kernel_cache.dictionary()["cache-segments"][3]["name"] == "__PRELINK_INFO"
  48     assert kernel_cache.dictionary()["cache-segments"][3]["vmAddr"] == "0x0"
  49     assert kernel_cache.dictionary()["cache-segments"][4]["name"] == "__DATA"
  50     assert kernel_cache.dictionary()["cache-segments"][4]["vmAddr"] == "0x4000"
  51     assert kernel_cache.dictionary()["cache-segments"][5]["name"] == "__LINKEDIT"
  52     assert kernel_cache.dictionary()["cache-segments"][5]["vmAddr"] == "0x18000"
  53
  54     assert len(kernel_cache.dictionary()["dylibs"]) == 2
  55     # bar.kext
  56     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.bar"
  57     assert len(kernel_cache.dictionary()["dylibs"][0]["segments"]) == 4
  58     assert kernel_cache.dictionary()["dylibs"][0]["segments"][0]["name"] == "__TEXT"
  59     assert kernel_cache.dictionary()["dylibs"][0]["segments"][0]["vmAddr"] == "0xC000"
  60     assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["name"] == "__TEXT_EXEC"
  61     assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["vmAddr"] == "0x14000"
  62     assert kernel_cache.dictionary()["dylibs"][0]["segments"][2]["name"] == "__DATA"
  63     assert kernel_cache.dictionary()["dylibs"][0]["segments"][2]["vmAddr"] == "0x4000"
  64     assert kernel_cache.dictionary()["dylibs"][0]["segments"][3]["name"] == "__LINKEDIT"
  65     assert kernel_cache.dictionary()["dylibs"][0]["segments"][3]["vmAddr"] == "0x18000"
  66     # foo.kext
  67     assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.foo"
  68     assert len(kernel_cache.dictionary()["dylibs"][1]["segments"]) == 3
  69     assert kernel_cache.dictionary()["dylibs"][1]["segments"][0]["name"] == "__TEXT"
  70     assert kernel_cache.dictionary()["dylibs"][1]["segments"][0]["vmAddr"] == "0x10000"
  71     assert kernel_cache.dictionary()["dylibs"][1]["segments"][1]["name"] == "__TEXT_EXEC"
  72     assert kernel_cache.dictionary()["dylibs"][1]["segments"][1]["vmAddr"] == "0x14020"
  73     assert kernel_cache.dictionary()["dylibs"][1]["segments"][2]["name"] == "__LINKEDIT"
  74     assert kernel_cache.dictionary()["dylibs"][1]["segments"][2]["vmAddr"] == "0x18000"
  75
  76     # Check the fixups
  77     kernel_cache.analyze("/hello-world-auxkc/aux.kc", ["-fixups", "-arch", "arm64"])
  78     assert len(kernel_cache.dictionary()["fixups"]) == 1
  79     assert kernel_cache.dictionary()["fixups"]["0x4000"] == "kc(3) + 0x14020"
  80     assert len(kernel_cache.dictionary()["dylibs"]) == 2
  81     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.bar"
  82     assert kernel_cache.dictionary()["dylibs"][0]["fixups"] == "none"
  83     assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.foo"
  84     assert kernel_cache.dictionary()["dylibs"][1]["fixups"] == "none"
  85
  86
  87 # [~]> 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
  88 # [~]> 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
  89 # [~]> 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
  90 # [~]> rm -r extensions/*.kext/*.ld
  91