testing/kernel-cache-tests/ctf-arm64e/test.py

   1 #!/usr/bin/python2.7
   2
   3 import os
   4 import KernelCollection
   5
   6 # This is the fixups-arm64e test, but with __CTF inserted so that we can see that CTF doesn't impact the result
   7 # Note the ctf.txt file is 16k just to ensure that if its vm addr wasn't updated, we'd exceed the size of __LINKEDIT with the __CTF
   8
   9
  10 def check(kernel_cache):
  11     kernel_cache.buildKernelCollection("arm64e", "/ctf-arm64e/main.kc", "/ctf-arm64e/main.kernel", "/ctf-arm64e/extensions", ["com.apple.foo", "com.apple.bar"], [])
  12     kernel_cache.analyze("/ctf-arm64e/main.kc", ["-layout", "-arch", "arm64e"])
  13
  14     assert len(kernel_cache.dictionary()["cache-segments"]) == 6
  15     assert kernel_cache.dictionary()["cache-segments"][0]["name"] == "__TEXT"
  16     assert kernel_cache.dictionary()["cache-segments"][0]["vmAddr"] == "0xFFFFFFF007004000"
  17     assert kernel_cache.dictionary()["cache-segments"][1]["name"] == "__PRELINK_TEXT"
  18     assert kernel_cache.dictionary()["cache-segments"][1]["vmAddr"] == "0xFFFFFFF007008000"
  19     assert kernel_cache.dictionary()["cache-segments"][2]["name"] == "__TEXT_EXEC"
  20     assert kernel_cache.dictionary()["cache-segments"][2]["vmAddr"] == "0xFFFFFFF007010000"
  21     assert kernel_cache.dictionary()["cache-segments"][3]["name"] == "__PRELINK_INFO"
  22     assert kernel_cache.dictionary()["cache-segments"][3]["vmAddr"] == "0xFFFFFFF00701C000"
  23     assert kernel_cache.dictionary()["cache-segments"][4]["name"] == "__DATA"
  24     assert kernel_cache.dictionary()["cache-segments"][4]["vmAddr"] == "0xFFFFFFF007020000"
  25     assert kernel_cache.dictionary()["cache-segments"][5]["name"] == "__LINKEDIT"
  26     assert kernel_cache.dictionary()["cache-segments"][5]["vmAddr"] == "0xFFFFFFF007030000"
  27
  28     assert len(kernel_cache.dictionary()["dylibs"]) == 3
  29     # main.kernel
  30     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
  31     assert len(kernel_cache.dictionary()["dylibs"][0]["segments"]) == 5
  32     assert kernel_cache.dictionary()["dylibs"][0]["segments"][0]["name"] == "__TEXT"
  33     assert kernel_cache.dictionary()["dylibs"][0]["segments"][0]["vmAddr"] == "0xFFFFFFF007010000"
  34     assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["name"] == "__DATA"
  35     assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["vmAddr"] == "0xFFFFFFF007020000"
  36     assert kernel_cache.dictionary()["dylibs"][0]["segments"][2]["name"] == "__TEXT_EXEC"
  37     assert kernel_cache.dictionary()["dylibs"][0]["segments"][2]["vmAddr"] == "0xFFFFFFF007014000"
  38     assert kernel_cache.dictionary()["dylibs"][0]["segments"][3]["name"] == "__CTF"
  39     assert kernel_cache.dictionary()["dylibs"][0]["segments"][3]["vmAddr"] == "0xFFFFFFF007008000"
  40     assert kernel_cache.dictionary()["dylibs"][0]["segments"][3]["vmSize"] == "0x0"
  41     assert kernel_cache.dictionary()["dylibs"][0]["segments"][3]["sections"][0]["vmAddr"] == "0xFFFFFFF007008000"
  42     assert kernel_cache.dictionary()["dylibs"][0]["segments"][3]["sections"][0]["vmSize"] == "0x0"
  43     assert kernel_cache.dictionary()["dylibs"][0]["segments"][4]["name"] == "__LINKEDIT"
  44     assert kernel_cache.dictionary()["dylibs"][0]["segments"][4]["vmAddr"] == "0xFFFFFFF007030000"
  45     # bar.kext
  46     assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.bar"
  47     assert len(kernel_cache.dictionary()["dylibs"][1]["segments"]) == 4
  48     assert kernel_cache.dictionary()["dylibs"][1]["segments"][0]["name"] == "__TEXT"
  49     assert kernel_cache.dictionary()["dylibs"][1]["segments"][0]["vmAddr"] == "0xFFFFFFF007008000"
  50     assert kernel_cache.dictionary()["dylibs"][1]["segments"][1]["name"] == "__TEXT_EXEC"
  51     assert kernel_cache.dictionary()["dylibs"][1]["segments"][1]["vmAddr"] == "0xFFFFFFF007018000"
  52     assert kernel_cache.dictionary()["dylibs"][1]["segments"][2]["name"] == "__DATA"
  53     assert kernel_cache.dictionary()["dylibs"][1]["segments"][2]["vmAddr"] == "0xFFFFFFF00702C000"
  54     assert kernel_cache.dictionary()["dylibs"][1]["segments"][3]["name"] == "__LINKEDIT"
  55     assert kernel_cache.dictionary()["dylibs"][1]["segments"][3]["vmAddr"] == "0xFFFFFFF007030000"
  56     # foo.kext
  57     assert kernel_cache.dictionary()["dylibs"][2]["name"] == "com.apple.foo"
  58     assert len(kernel_cache.dictionary()["dylibs"][2]["segments"]) == 4
  59     assert kernel_cache.dictionary()["dylibs"][2]["segments"][0]["name"] == "__TEXT"
  60     assert kernel_cache.dictionary()["dylibs"][2]["segments"][0]["vmAddr"] == "0xFFFFFFF00700C000"
  61     assert kernel_cache.dictionary()["dylibs"][2]["segments"][1]["name"] == "__TEXT_EXEC"
  62     assert kernel_cache.dictionary()["dylibs"][2]["segments"][1]["vmAddr"] == "0xFFFFFFF007018040"
  63     assert kernel_cache.dictionary()["dylibs"][2]["segments"][2]["name"] == "__DATA"
  64     assert kernel_cache.dictionary()["dylibs"][2]["segments"][2]["vmAddr"] == "0xFFFFFFF00702C010"
  65     assert kernel_cache.dictionary()["dylibs"][2]["segments"][3]["name"] == "__LINKEDIT"
  66     assert kernel_cache.dictionary()["dylibs"][2]["segments"][3]["vmAddr"] == "0xFFFFFFF007030000"
  67
  68     # Check the fixups
  69     kernel_cache.analyze("/ctf-arm64e/main.kc", ["-fixups", "-arch", "arm64e"])
  70     assert len(kernel_cache.dictionary()["fixups"]) == 11
  71     # main.kernel: S s = { &func, &func, &g, &func, &g };
  72     assert kernel_cache.dictionary()["fixups"]["0x1C000"] == "kc(0) + 0xFFFFFFF007014000 auth(IA !addr 0)"
  73     assert kernel_cache.dictionary()["fixups"]["0x1C008"] == "kc(0) + 0xFFFFFFF007014000 auth(IA !addr 0)"
  74     assert kernel_cache.dictionary()["fixups"]["0x1C010"] == "kc(0) + 0xFFFFFFF00702802C"
  75     assert kernel_cache.dictionary()["fixups"]["0x20000"] == "kc(0) + 0xFFFFFFF007014000 auth(IA !addr 0)"
  76     assert kernel_cache.dictionary()["fixups"]["0x20008"] == "kc(0) + 0xFFFFFFF00702802C"
  77     # main.kernel: PackedS ps = { 0, &func, &func, 0, &g, 0, &g };
  78     assert kernel_cache.dictionary()["fixups"]["0x24004"] == "kc(0) + 0xFFFFFFF007014000 auth(IA !addr 0)"
  79     assert kernel_cache.dictionary()["fixups"]["0x2400C"] == "kc(0) + 0xFFFFFFF007014000 auth(IA !addr 0)"
  80     assert kernel_cache.dictionary()["fixups"]["0x24018"] == "kc(0) + 0xFFFFFFF00702802C"
  81     assert kernel_cache.dictionary()["fixups"]["0x24024"] == "kc(0) + 0xFFFFFFF00702802C"
  82     # bar.kext: __typeof(&bar) barPtr = &bar;
  83     assert kernel_cache.dictionary()["fixups"]["0x28000"] == "kc(0) + 0xFFFFFFF007018000 auth(IA !addr 0)"
  84     # foo.kext: int* gPtr = &g;
  85     assert kernel_cache.dictionary()["fixups"]["0x28010"] == "kc(0) + 0xFFFFFFF00702C018"
  86     assert len(kernel_cache.dictionary()["dylibs"]) == 3
  87     assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
  88     assert kernel_cache.dictionary()["dylibs"][0]["fixups"] == "none"
  89     assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.bar"
  90     assert kernel_cache.dictionary()["dylibs"][1]["fixups"] == "none"
  91     assert kernel_cache.dictionary()["dylibs"][2]["name"] == "com.apple.foo"
  92     assert kernel_cache.dictionary()["dylibs"][2]["fixups"] == "none"
  93
  94 # [~]> xcrun -sdk iphoneos.internal cc -arch arm64e -std=c++11 -Wl,-static -mkernel -Wl,-fixup_chains -Wl,-kernel -nostdlib -Wl,-add_split_seg_info -Wl,-e,__start -Wl,-pie main.cpp -Wl,-pagezero_size,0x0 -Wl,-rename_section,__TEXT,__text,__TEXT_EXEC,__text -o main.kernel  -Wl,-image_base,0xfffffff007004000 -Wl,-install_name,/usr/lib/swift/split.seg.v2.hack
  95 # [~]> xcrun -sdk macosx.internal ctf_insert main.kernel -arch arm64e ctf.txt -o main.kernel
  96 # [~]> xcrun -sdk iphoneos.internal cc -arch arm64e -Wl,-kext -mkernel -nostdlib -Wl,-add_split_seg_info -Wl,-fixup_chains foo.c -o extensions/foo.kext/foo
  97 # [~]> xcrun -sdk iphoneos.internal cc -arch arm64e -Wl,-kext -mkernel -nostdlib -Wl,-add_split_seg_info -Wl,-fixup_chains bar.c -o extensions/bar.kext/bar
  98 # [~]> rm -r extensions/*.kext/*.ld
  99