testing/kernel-cache-tests/kernel-base-address/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", "/kernel-base-address/main.kc", "/kernel-base-address/main.kernel", None, [], [])
   9
  10     # Check the layout
  11     kernel_cache.analyze("/kernel-base-address/main.kc", ["-layout", "-arch", "arm64"])
  12
  13     assert len(kernel_cache.dictionary()["cache-segments"]) == 6
  14     assert kernel_cache.dictionary()["cache-segments"][0]["name"] == "__TEXT"
  15     assert kernel_cache.dictionary()["cache-segments"][0]["vmAddr"] == "0xFFFFFFF007004000"
  16     assert kernel_cache.dictionary()["cache-segments"][1]["name"] == "__PRELINK_TEXT"
  17     assert kernel_cache.dictionary()["cache-segments"][1]["vmAddr"] == "0xFFFFFFF007008000"
  18     assert kernel_cache.dictionary()["cache-segments"][2]["name"] == "__TEXT_EXEC"
  19     assert kernel_cache.dictionary()["cache-segments"][2]["vmAddr"] == "0xFFFFFFF007008000"
  20     assert kernel_cache.dictionary()["cache-segments"][3]["name"] == "__PRELINK_INFO"
  21     assert kernel_cache.dictionary()["cache-segments"][3]["vmAddr"] == "0xFFFFFFF007010000"
  22     assert kernel_cache.dictionary()["cache-segments"][4]["name"] == "__DATA"
  23     assert kernel_cache.dictionary()["cache-segments"][4]["vmAddr"] == "0xFFFFFFF007014000"
  24     assert kernel_cache.dictionary()["cache-segments"][5]["name"] == "__LINKEDIT"
  25     assert kernel_cache.dictionary()["cache-segments"][5]["vmAddr"] == "0xFFFFFFF00701C000"
  26
  27     assert len(kernel_cache.dictionary()["dylibs"]) == 1
  28     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
  29     assert len(kernel_cache.dictionary()["dylibs"][0]["segments"]) == 4
  30     assert kernel_cache.dictionary()["dylibs"][0]["segments"][0]["name"] == "__TEXT"
  31     assert kernel_cache.dictionary()["dylibs"][0]["segments"][0]["vmAddr"] == "0xFFFFFFF007008000"
  32     assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["name"] == "__DATA"
  33     assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["vmAddr"] == "0xFFFFFFF007014000"
  34     assert kernel_cache.dictionary()["dylibs"][0]["segments"][2]["name"] == "__TEXT_EXEC"
  35     assert kernel_cache.dictionary()["dylibs"][0]["segments"][2]["vmAddr"] == "0xFFFFFFF00700C000"
  36     assert kernel_cache.dictionary()["dylibs"][0]["segments"][3]["name"] == "__LINKEDIT"
  37     assert kernel_cache.dictionary()["dylibs"][0]["segments"][3]["vmAddr"] == "0xFFFFFFF00701C000"
  38
  39     # Check the entry point
  40     kernel_cache.analyze("/kernel-base-address/main.kc", ["-entrypoint", "-arch", "arm64"])
  41     assert kernel_cache.dictionary()["entrypoint"] == "0xFFFFFFF00700C000"
  42
  43     # Check the fixups
  44     kernel_cache.analyze("/kernel-base-address/main.kc", ["-fixups", "-arch", "arm64"])
  45     assert len(kernel_cache.dictionary()["fixups"]) == 4
  46     assert kernel_cache.dictionary()["fixups"]["0x10000"] == "kc(0) + 0xFFFFFFF007014028"
  47     assert kernel_cache.dictionary()["fixups"]["0x10008"] == "kc(0) + 0xFFFFFFF007014028"
  48     assert kernel_cache.dictionary()["fixups"]["0x10018"] == "kc(0) + 0xFFFFFFF00701402C"
  49     assert kernel_cache.dictionary()["fixups"]["0x10020"] == "kc(0) + 0xFFFFFFF00701402D"
  50     assert len(kernel_cache.dictionary()["dylibs"]) == 1
  51     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
  52     assert kernel_cache.dictionary()["dylibs"][0]["fixups"] == "none"
  53
  54 # [~]> 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 -Wl,-image_base,0xfffffff007004000
  55