testing/kernel-cache-tests/fixups-x86_64-unaligned/test.py

   1 #!/usr/bin/python2.7
   2
   3 import os
   4 import KernelCollection
   5
   6 # Test unaligned fixups in x86_64 kexts
   7
   8 def check(kernel_cache):
   9     kernel_cache.buildKernelCollection("x86_64", "/fixups-x86_64-unaligned/main.kc", "/fixups-x86_64-unaligned/main.kernel", "/fixups-x86_64-unaligned/extensions", ["com.apple.foo"], [])
  10     kernel_cache.analyze("/fixups-x86_64-unaligned/main.kc", ["-symbols", "-arch", "x86_64"])
  11
  12     assert len(kernel_cache.dictionary()["dylibs"]) == 2
  13     # foo.kext
  14     assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.foo"
  15     # int foo();
  16     assert kernel_cache.dictionary()["dylibs"][1]["global-symbols"][0]["name"] == "_foo"
  17     foo_vmaddr_foo = kernel_cache.dictionary()["dylibs"][1]["global-symbols"][0]["vmAddr"]
  18     # int g;
  19     assert kernel_cache.dictionary()["dylibs"][1]["global-symbols"][1]["name"] == "_g"
  20     foo_vmaddr_g = kernel_cache.dictionary()["dylibs"][1]["global-symbols"][1]["vmAddr"]
  21     # PackedS ps;
  22     assert kernel_cache.dictionary()["dylibs"][1]["global-symbols"][2]["name"] == "_ps"
  23     assert kernel_cache.dictionary()["dylibs"][1]["global-symbols"][2]["vmAddr"] == "0x20C000"
  24     # int func();
  25     assert kernel_cache.dictionary()["dylibs"][1]["local-symbols"][0]["name"] == "_func"
  26     foo_vmaddr_func = kernel_cache.dictionary()["dylibs"][1]["local-symbols"][0]["vmAddr"]
  27
  28     # Check the fixups
  29     kernel_cache.analyze("/fixups-x86_64-unaligned/main.kc", ["-fixups", "-arch", "x86_64"])
  30     assert len(kernel_cache.dictionary()["fixups"]) == 20
  31     # foo.kext: PackedS ps = { 0, &func, &func, 0, &g, 0, &g };
  32     # _ps is at 0x20C000 which is offset 0x10C000 from __HIB
  33     assert kernel_cache.dictionary()["fixups"]["0x10C004"] == "kc(0) + " + foo_vmaddr_func
  34     assert kernel_cache.dictionary()["fixups"]["0x10C00C"] == "kc(0) + " + foo_vmaddr_func
  35     assert kernel_cache.dictionary()["fixups"]["0x10C018"] == "kc(0) + " + foo_vmaddr_g
  36     assert kernel_cache.dictionary()["fixups"]["0x10C021"] == "kc(0) + " + foo_vmaddr_g
  37     # foo.kext: PackedS ps_array = { { 0, &func, &func, 0, &g, 0, &g }, ... }
  38     # _ps_array[0] is at 0x20D000 which is offset 0x10D000 from __HIB
  39     assert kernel_cache.dictionary()["fixups"]["0x10D004"] == "kc(0) + " + foo_vmaddr_func
  40     assert kernel_cache.dictionary()["fixups"]["0x10D00C"] == "kc(0) + " + foo_vmaddr_func
  41     assert kernel_cache.dictionary()["fixups"]["0x10D018"] == "kc(0) + " + foo_vmaddr_g
  42     assert kernel_cache.dictionary()["fixups"]["0x10D021"] == "kc(0) + " + foo_vmaddr_g
  43     # _ps_array[1] is at 0x20E000 which is offset 0x10D000 from __HIB
  44     assert kernel_cache.dictionary()["fixups"]["0x10E004"] == "kc(0) + " + foo_vmaddr_func
  45     assert kernel_cache.dictionary()["fixups"]["0x10E00C"] == "kc(0) + " + foo_vmaddr_func
  46     assert kernel_cache.dictionary()["fixups"]["0x10E018"] == "kc(0) + " + foo_vmaddr_g
  47     assert kernel_cache.dictionary()["fixups"]["0x10E021"] == "kc(0) + " + foo_vmaddr_g
  48     # _ps_array[2] is at 0x20F000 which is offset 0x10D000 from __HIB
  49     assert kernel_cache.dictionary()["fixups"]["0x10F004"] == "kc(0) + " + foo_vmaddr_func
  50     assert kernel_cache.dictionary()["fixups"]["0x10F00C"] == "kc(0) + " + foo_vmaddr_func
  51     assert kernel_cache.dictionary()["fixups"]["0x10F018"] == "kc(0) + " + foo_vmaddr_g
  52     assert kernel_cache.dictionary()["fixups"]["0x10F021"] == "kc(0) + " + foo_vmaddr_g
  53     # _ps_array[3] is at 0x210000 which is offset 0x10D000 from __HIB
  54     assert kernel_cache.dictionary()["fixups"]["0x110004"] == "kc(0) + " + foo_vmaddr_func
  55     assert kernel_cache.dictionary()["fixups"]["0x11000C"] == "kc(0) + " + foo_vmaddr_func
  56     assert kernel_cache.dictionary()["fixups"]["0x110018"] == "kc(0) + " + foo_vmaddr_g
  57     assert kernel_cache.dictionary()["fixups"]["0x110021"] == "kc(0) + " + foo_vmaddr_g
  58
  59 # [~]> xcrun -sdk macosx.internal cc -arch x86_64 -Wl,-static -mkernel -nostdlib -Wl,-kernel -Wl,-e,__start -Wl,-pie main.cpp -Wl,-pagezero_size,0x0 -o main.kernel -Wl,-image_base,0x200000 -Wl,-segaddr,__HIB,0x100000 -Wl,-add_split_seg_info -Wl,-install_name,/usr/lib/swift/split.seg.v2.hack
  60 # [~]> xcrun -sdk macosx.internal cc -arch x86_64 -Wl,-kext -mkernel -nostdlib -Wl,-add_split_seg_info foo.c -o extensions/foo.kext/foo
  61