testing/kernel-cache-tests/kext-receipts/test.py

   1 #!/usr/bin/python2.7
   2
   3 import os
   4 import KernelCollection
   5
   6
   7 def check(kernel_cache):
   8     kernel_cache.buildKernelCollection("arm64", "/kext-receipts/main.kc", "/kext-receipts/main.kernel", None, [],
   9                                        ["-sectcreate", "__SMALL", "", "$PWD/kext-receipts/small.txt",
  10                                         "-sectcreate", "__SIXTEEN_CHARSS", "__sixteen_chaars", "$PWD/kext-receipts/large.txt",
  11                                         "-sectcreate", "__SIXTEEN_CHARSS", "__large2", "$PWD/kext-receipts/large2.txt"])
  12
  13     # Check the layout
  14     kernel_cache.analyze("/kext-receipts/main.kc", ["-layout", "-arch", "arm64"])
  15
  16     assert len(kernel_cache.dictionary()["cache-segments"]) == 8
  17     assert kernel_cache.dictionary()["cache-segments"][0]["name"] == "__TEXT"
  18     assert kernel_cache.dictionary()["cache-segments"][0]["vmAddr"] == "0x0"
  19     assert kernel_cache.dictionary()["cache-segments"][1]["name"] == "__PRELINK_TEXT"
  20     assert kernel_cache.dictionary()["cache-segments"][1]["vmAddr"] == "0x4000"
  21     assert kernel_cache.dictionary()["cache-segments"][2]["name"] == "__TEXT_EXEC"
  22     assert kernel_cache.dictionary()["cache-segments"][2]["vmAddr"] == "0x4000"
  23
  24     # small.txt
  25     assert kernel_cache.dictionary()["cache-segments"][3]["name"] == "__SMALL"
  26     assert kernel_cache.dictionary()["cache-segments"][3]["vmAddr"] == "0xC000"
  27     assert not "sections" in kernel_cache.dictionary()["cache-segments"][3]
  28
  29     # large.txt, then large2.txt
  30     assert kernel_cache.dictionary()["cache-segments"][4]["name"] == "__SIXTEEN_CHARSS"
  31     assert kernel_cache.dictionary()["cache-segments"][4]["vmAddr"] == "0x10000"
  32     assert kernel_cache.dictionary()["cache-segments"][4]["vmSize"] == "0x4000"
  33     assert len(kernel_cache.dictionary()["cache-segments"][4]["sections"]) == 2
  34     assert kernel_cache.dictionary()["cache-segments"][4]["sections"][0]["name"] == "__sixteen_chaars";
  35     assert kernel_cache.dictionary()["cache-segments"][4]["sections"][0]["vmAddr"] == "0x10000";
  36     assert kernel_cache.dictionary()["cache-segments"][4]["sections"][0]["vmEnd"] == "0x10124";
  37     assert kernel_cache.dictionary()["cache-segments"][4]["sections"][0]["vmSize"] == "0x124";
  38     assert kernel_cache.dictionary()["cache-segments"][4]["sections"][1]["name"] == "__large2";
  39     assert kernel_cache.dictionary()["cache-segments"][4]["sections"][1]["vmAddr"] == "0x10124";
  40     assert kernel_cache.dictionary()["cache-segments"][4]["sections"][1]["vmEnd"] == "0x1012E";
  41     assert kernel_cache.dictionary()["cache-segments"][4]["sections"][1]["vmSize"] == "0xA";
  42
  43     assert kernel_cache.dictionary()["cache-segments"][5]["name"] == "__PRELINK_INFO"
  44     assert kernel_cache.dictionary()["cache-segments"][5]["vmAddr"] == "0x14000"
  45     assert kernel_cache.dictionary()["cache-segments"][6]["name"] == "__DATA"
  46     assert kernel_cache.dictionary()["cache-segments"][6]["vmAddr"] == "0x18000"
  47     assert kernel_cache.dictionary()["cache-segments"][7]["name"] == "__LINKEDIT"
  48     assert kernel_cache.dictionary()["cache-segments"][7]["vmAddr"] == "0x20000"
  49
  50     assert len(kernel_cache.dictionary()["dylibs"]) == 1
  51     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
  52     assert len(kernel_cache.dictionary()["dylibs"][0]["segments"]) == 4
  53     assert kernel_cache.dictionary()["dylibs"][0]["segments"][0]["name"] == "__TEXT"
  54     assert kernel_cache.dictionary()["dylibs"][0]["segments"][0]["vmAddr"] == "0x4000"
  55     assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["name"] == "__DATA"
  56     assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["vmAddr"] == "0x18000"
  57     assert kernel_cache.dictionary()["dylibs"][0]["segments"][2]["name"] == "__TEXT_EXEC"
  58     assert kernel_cache.dictionary()["dylibs"][0]["segments"][2]["vmAddr"] == "0x8000"
  59     assert kernel_cache.dictionary()["dylibs"][0]["segments"][3]["name"] == "__LINKEDIT"
  60     assert kernel_cache.dictionary()["dylibs"][0]["segments"][3]["vmAddr"] == "0x20000"
  61
  62     # Check the entry point
  63     kernel_cache.analyze("/kext-receipts/main.kc", ["-entrypoint", "-arch", "arm64"])
  64     assert kernel_cache.dictionary()["entrypoint"] == "0x8000"
  65
  66     # Check the fixups
  67     kernel_cache.analyze("/kext-receipts/main.kc", ["-fixups", "-arch", "arm64"])
  68     assert len(kernel_cache.dictionary()["fixups"]) == 4
  69     assert kernel_cache.dictionary()["fixups"]["0x18000"] == "kc(0) + 0x18028"
  70     assert kernel_cache.dictionary()["fixups"]["0x18008"] == "kc(0) + 0x18028"
  71     assert kernel_cache.dictionary()["fixups"]["0x18018"] == "kc(0) + 0x1802C"
  72     assert kernel_cache.dictionary()["fixups"]["0x18020"] == "kc(0) + 0x1802D"
  73     assert len(kernel_cache.dictionary()["dylibs"]) == 1
  74     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
  75     assert kernel_cache.dictionary()["dylibs"][0]["fixups"] == "none"
  76
  77 # [~]> xcrun -sdk iphoneos.internal cc -arch arm64 -Wl,-static -mkernel -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,-install_name,/usr/lib/swift/split.seg.v2.hack
  78