testing/kernel-cache-tests/auxkc-kext-bind-to-kernel/test.py

   1 #!/usr/bin/python2.7
   2
   3 import os
   4 import KernelCollection
   5
   6 # This verifies that we use the symbol set when resolving symbols from aux KC to the kernel
   7
   8 def check(kernel_cache):
   9     kernel_cache.buildKernelCollection("arm64", "/auxkc-kext-bind-to-kernel/main.kc", "/auxkc-kext-bind-to-kernel/main.kernel", "/auxkc-kext-bind-to-kernel/extensions", ["com.apple.bar"], [])
  10     kernel_cache.analyze("/auxkc-kext-bind-to-kernel/main.kc", ["-layout", "-arch", "arm64"])
  11
  12     assert len(kernel_cache.dictionary()["dylibs"]) == 1
  13     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
  14
  15     # Now build an aux cache using the baseline kernel collection
  16     kernel_cache.buildAuxKernelCollection("arm64", "/auxkc-kext-bind-to-kernel/aux.kc", "/auxkc-kext-bind-to-kernel/main.kc", "", "/auxkc-kext-bind-to-kernel/extensions", ["com.apple.foo"], [])
  17     kernel_cache.analyze("/auxkc-kext-bind-to-kernel/aux.kc", ["-layout", "-arch", "arm64"])
  18
  19     # Check the fixups
  20     kernel_cache.analyze("/auxkc-kext-bind-to-kernel/aux.kc", ["-fixups", "-arch", "arm64"])
  21     assert len(kernel_cache.dictionary()["fixups"]) == 1
  22     assert kernel_cache.dictionary()["fixups"]["0x4000"] == "kc(0) + 0x8000"
  23     assert len(kernel_cache.dictionary()["dylibs"]) == 1
  24     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.foo"
  25     assert kernel_cache.dictionary()["dylibs"][0]["fixups"] == "none"
  26
  27 # [~]> xcrun -sdk iphoneos.internal cc -arch arm64 -Wl,-static -mkernel -nostdlib -Wl,-add_split_seg_info -Wl,-no_data_const -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--
  28 # [~]> 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
  29 # [~]> rm -r extensions/foo.kext/*.ld
  30