testing/kernel-cache-tests/symbol-sets-prefix/test.py

   1 #!/usr/bin/python2.7
   2
   3 import os
   4 import KernelCollection
   5
   6 # Symbol sets can have a prefix with an implicit * wildcard on the end which re-exports anything from xnu with that name
   7
   8 def check(kernel_cache):
   9     kernel_cache.buildKernelCollection("arm64", "/symbol-sets-prefix/main.kc", "/symbol-sets-prefix/main.kernel", "/symbol-sets-prefix/extensions", ["com.apple.foo"], [])
  10     kernel_cache.analyze("/symbol-sets-prefix/main.kc", ["-layout", "-arch", "arm64"])
  11
  12     assert len(kernel_cache.dictionary()["dylibs"]) == 2
  13     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
  14     assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.foo"
  15     assert kernel_cache.dictionary()["dylibs"][1]["segments"][2]["name"] == "__DATA_CONST"
  16     assert kernel_cache.dictionary()["dylibs"][1]["segments"][2]["vmAddr"] == "0x14000"
  17
  18     # Check the symbols
  19     kernel_cache.analyze("/symbol-sets-prefix/main.kc", ["-symbols", "-arch", "arm64"])
  20     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
  21     assert len(kernel_cache.dictionary()["dylibs"][0]["global-symbols"]) == 6
  22     assert kernel_cache.dictionary()["dylibs"][0]["global-symbols"][0]["name"] == "__mh_execute_header"
  23     assert kernel_cache.dictionary()["dylibs"][0]["global-symbols"][1]["name"] == "__start"
  24     assert kernel_cache.dictionary()["dylibs"][0]["global-symbols"][2]["name"] == "_symbol_from_xnu0"
  25     assert kernel_cache.dictionary()["dylibs"][0]["global-symbols"][2]["vmAddr"] == "0xC000"
  26     assert kernel_cache.dictionary()["dylibs"][0]["global-symbols"][3]["name"] == "_symbol_from_xnu1"
  27     assert kernel_cache.dictionary()["dylibs"][0]["global-symbols"][3]["vmAddr"] == "0xC00C"
  28     assert kernel_cache.dictionary()["dylibs"][0]["global-symbols"][4]["name"] == "_symbol_from_xnu2"
  29     assert kernel_cache.dictionary()["dylibs"][0]["global-symbols"][4]["vmAddr"] == "0xC018"
  30     assert kernel_cache.dictionary()["dylibs"][0]["global-symbols"][5]["name"] == "_symbol_from_xnu3"
  31     assert kernel_cache.dictionary()["dylibs"][0]["global-symbols"][5]["vmAddr"] == "0xC024"
  32
  33     # Check the fixups
  34     kernel_cache.analyze("/symbol-sets-prefix/main.kc", ["-fixups", "-arch", "arm64"])
  35     assert len(kernel_cache.dictionary()["fixups"]) == 4
  36     assert kernel_cache.dictionary()["fixups"]["0x14000"] == "kc(0) + 0xC000"
  37     assert kernel_cache.dictionary()["fixups"]["0x14008"] == "kc(0) + 0xC00C"
  38     assert kernel_cache.dictionary()["fixups"]["0x14010"] == "kc(0) + 0xC018"
  39     assert kernel_cache.dictionary()["fixups"]["0x14018"] == "kc(0) + 0xC024"
  40     assert len(kernel_cache.dictionary()["dylibs"]) == 2
  41     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
  42     assert kernel_cache.dictionary()["dylibs"][0]["fixups"] == "none"
  43     assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.foo"
  44     assert kernel_cache.dictionary()["dylibs"][1]["fixups"] == "none"
  45
  46 # [~]> 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 -Wl,-sectcreate,__LINKINFO,__symbolsets,SymbolSets.plist -Wl,-segprot,__LINKINFO,r--,r--
  47 # [~]> xcrun -sdk iphoneos.internal cc -arch arm64 -Wl,-kext -mkernel -nostdlib -Wl,-add_split_seg_info foo.c -o extensions/foo.kext/foo
  48 # [~]> rm -r extensions/foo.kext/*.ld
  49