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

   1 #!/usr/bin/python2.7
   2
   3 import os
   4 import KernelCollection
   5
   6 # Verify that pageableKC has nothing packed on the same page
   7
   8 def check(kernel_cache):
   9     # First build a kernel collection
  10     kernel_cache.buildKernelCollection("arm64", "/hello-world-pageablekc/main.kc", "/hello-world-pageablekc/main.kernel", "/hello-world-pageablekc/extensions", [], [])
  11     kernel_cache.analyze("/hello-world-pageablekc/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"] == "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"] == "__DATA"
  23     assert kernel_cache.dictionary()["cache-segments"][4]["vmAddr"] == "0x10000"
  24     assert kernel_cache.dictionary()["cache-segments"][5]["name"] == "__LINKEDIT"
  25     assert kernel_cache.dictionary()["cache-segments"][5]["vmAddr"] == "0x14000"
  26
  27     assert len(kernel_cache.dictionary()["dylibs"]) == 1
  28     # main.kernel
  29     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
  30     assert len(kernel_cache.dictionary()["dylibs"][0]["segments"]) == 4
  31     assert kernel_cache.dictionary()["dylibs"][0]["segments"][0]["name"] == "__TEXT"
  32     assert kernel_cache.dictionary()["dylibs"][0]["segments"][0]["vmAddr"] == "0x4000"
  33     assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["name"] == "__DATA"
  34     assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["vmAddr"] == "0x10000"
  35     assert kernel_cache.dictionary()["dylibs"][0]["segments"][2]["name"] == "__TEXT_EXEC"
  36     assert kernel_cache.dictionary()["dylibs"][0]["segments"][2]["vmAddr"] == "0x8000"
  37     assert kernel_cache.dictionary()["dylibs"][0]["segments"][3]["name"] == "__LINKEDIT"
  38     assert kernel_cache.dictionary()["dylibs"][0]["segments"][3]["vmAddr"] == "0x14000"
  39
  40     # Now build an pageable cache using the baseline kernel collection
  41     kernel_cache.buildPageableKernelCollection("arm64", "/hello-world-pageablekc/pageable.kc", "/hello-world-pageablekc/main.kc", "/hello-world-pageablekc/extensions", ["com.apple.foo", "com.apple.bar"], [])
  42     kernel_cache.analyze("/hello-world-pageablekc/pageable.kc", ["-layout", "-arch", "arm64"])
  43
  44     assert len(kernel_cache.dictionary()["cache-segments"]) == 6
  45     assert kernel_cache.dictionary()["cache-segments"][0]["name"] == "__TEXT"
  46     assert kernel_cache.dictionary()["cache-segments"][0]["vmAddr"] == "0x0"
  47     assert kernel_cache.dictionary()["cache-segments"][1]["name"] == "__PRELINK_TEXT"
  48     assert kernel_cache.dictionary()["cache-segments"][1]["vmAddr"] == "0x4000"
  49     assert kernel_cache.dictionary()["cache-segments"][2]["name"] == "__TEXT_EXEC"
  50     assert kernel_cache.dictionary()["cache-segments"][2]["vmAddr"] == "0xC000"
  51     assert kernel_cache.dictionary()["cache-segments"][3]["name"] == "__PRELINK_INFO"
  52     assert kernel_cache.dictionary()["cache-segments"][3]["vmAddr"] == "0x14000"
  53     assert kernel_cache.dictionary()["cache-segments"][4]["name"] == "__DATA"
  54     assert kernel_cache.dictionary()["cache-segments"][4]["vmAddr"] == "0x18000"
  55     assert kernel_cache.dictionary()["cache-segments"][5]["name"] == "__LINKEDIT"
  56     assert kernel_cache.dictionary()["cache-segments"][5]["vmAddr"] == "0x20000"
  57
  58     assert len(kernel_cache.dictionary()["dylibs"]) == 2
  59     # bar.kext
  60     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.bar"
  61     assert len(kernel_cache.dictionary()["dylibs"][0]["segments"]) == 4
  62     assert kernel_cache.dictionary()["dylibs"][0]["segments"][0]["name"] == "__TEXT"
  63     assert kernel_cache.dictionary()["dylibs"][0]["segments"][0]["vmAddr"] == "0x4000"
  64     assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["name"] == "__TEXT_EXEC"
  65     assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["vmAddr"] == "0xC000"
  66     assert kernel_cache.dictionary()["dylibs"][0]["segments"][2]["name"] == "__DATA"
  67     assert kernel_cache.dictionary()["dylibs"][0]["segments"][2]["vmAddr"] == "0x18000"
  68     assert kernel_cache.dictionary()["dylibs"][0]["segments"][3]["name"] == "__LINKEDIT"
  69     assert kernel_cache.dictionary()["dylibs"][0]["segments"][3]["vmAddr"] == "0x20000"
  70     # foo.kext
  71     assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.foo"
  72     assert len(kernel_cache.dictionary()["dylibs"][1]["segments"]) == 4
  73     assert kernel_cache.dictionary()["dylibs"][1]["segments"][0]["name"] == "__TEXT"
  74     assert kernel_cache.dictionary()["dylibs"][1]["segments"][0]["vmAddr"] == "0x8000"
  75     assert kernel_cache.dictionary()["dylibs"][1]["segments"][1]["name"] == "__TEXT_EXEC"
  76     assert kernel_cache.dictionary()["dylibs"][1]["segments"][1]["vmAddr"] == "0x10000"
  77     assert kernel_cache.dictionary()["dylibs"][1]["segments"][2]["name"] == "__DATA"
  78     assert kernel_cache.dictionary()["dylibs"][1]["segments"][2]["vmAddr"] == "0x1C000"
  79     assert kernel_cache.dictionary()["dylibs"][1]["segments"][3]["name"] == "__LINKEDIT"
  80     assert kernel_cache.dictionary()["dylibs"][1]["segments"][3]["vmAddr"] == "0x20000"
  81
  82     # Check the fixups
  83     kernel_cache.analyze("/hello-world-pageablekc/pageable.kc", ["-fixups", "-arch", "arm64"])
  84     assert kernel_cache.dictionary()["fixups"] == ""
  85     assert len(kernel_cache.dictionary()["dylibs"]) == 2
  86
  87     # bar.kext
  88     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.bar"
  89     assert len(kernel_cache.dictionary()["dylibs"][0]["fixups"]) == 2
  90     # extern int foo()
  91     assert kernel_cache.dictionary()["dylibs"][0]["fixups"]["0x14000"] == "kc(1) + 0x10000"
  92     # int* p = &x;
  93     assert kernel_cache.dictionary()["dylibs"][0]["fixups"]["0x14008"] == "kc(1) + 0x18010"
  94
  95     # foo.kext
  96     assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.foo"
  97     assert len(kernel_cache.dictionary()["dylibs"][1]["fixups"]) == 1
  98     # int* p = &x;
  99     assert kernel_cache.dictionary()["dylibs"][1]["fixups"]["0x14000"] == "kc(1) + 0x1C008"
 100
 101
 102 # [~]> 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
 103 # [~]> 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
 104 # [~]> 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
 105 # [~]> rm -r extensions/*.kext/*.ld
 106