dyld-832.7.1.tar.gz

[apple/dyld.git] / testing / kernel-cache-tests / data-const / test.py

diff --git a/testing/kernel-cache-tests/data-const/test.py b/testing/kernel-cache-tests/data-const/test.py
new file mode 100644 (file)
index 0000000..6d0bb30
--- /dev/null
+++ b/testing/kernel-cache-tests/data-const/test.py
@@ -0,0 +1,91 @@
+#!/usr/bin/python2.7
+
+import os
+import KernelCollection
+
+# __DATA_CONST is r/o in xnu and r/w in the kext's but should be r/o in the final image
+
+def check(kernel_cache):
+    kernel_cache.buildKernelCollection("arm64", "/data-const/main.kc", "/data-const/main.kernel", "/data-const/extensions", ["com.apple.foo", "com.apple.bar"], [])
+    kernel_cache.analyze("/data-const/main.kc", ["-layout", "-arch", "arm64"])
+
+    assert len(kernel_cache.dictionary()["cache-segments"]) == 7
+    assert kernel_cache.dictionary()["cache-segments"][0]["name"] == "__TEXT"
+    assert kernel_cache.dictionary()["cache-segments"][0]["vmAddr"] == "0x0"
+    assert kernel_cache.dictionary()["cache-segments"][0]["vmSize"] == "0x4000"
+    assert kernel_cache.dictionary()["cache-segments"][1]["name"] == "__PRELINK_TEXT"
+    assert kernel_cache.dictionary()["cache-segments"][1]["vmAddr"] == "0x4000"
+    assert kernel_cache.dictionary()["cache-segments"][1]["vmSize"] == "0x8000"
+    assert kernel_cache.dictionary()["cache-segments"][2]["name"] == "__TEXT_EXEC"
+    assert kernel_cache.dictionary()["cache-segments"][2]["vmAddr"] == "0xC000"
+    assert kernel_cache.dictionary()["cache-segments"][2]["vmSize"] == "0xC000"
+    assert kernel_cache.dictionary()["cache-segments"][3]["name"] == "__DATA_CONST"
+    assert kernel_cache.dictionary()["cache-segments"][3]["vmAddr"] == "0x18000"
+    assert kernel_cache.dictionary()["cache-segments"][3]["vmSize"] == "0x8000"
+    assert kernel_cache.dictionary()["cache-segments"][4]["name"] == "__PRELINK_INFO"
+    assert kernel_cache.dictionary()["cache-segments"][4]["vmAddr"] == "0x20000"
+    assert kernel_cache.dictionary()["cache-segments"][5]["name"] == "__DATA"
+    assert kernel_cache.dictionary()["cache-segments"][5]["vmAddr"] == "0x24000"
+    assert kernel_cache.dictionary()["cache-segments"][5]["vmSize"] == "0x8000"
+    assert kernel_cache.dictionary()["cache-segments"][6]["name"] == "__LINKEDIT"
+    assert kernel_cache.dictionary()["cache-segments"][6]["vmAddr"] == "0x2C000"
+
+    assert len(kernel_cache.dictionary()["dylibs"]) == 3
+    # main.kernel
+    assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
+    assert len(kernel_cache.dictionary()["dylibs"][0]["segments"]) == 5
+    assert kernel_cache.dictionary()["dylibs"][0]["segments"][0]["name"] == "__TEXT"
+    assert kernel_cache.dictionary()["dylibs"][0]["segments"][0]["vmAddr"] == "0xC000"
+    assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["name"] == "__DATA"
+    assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["vmAddr"] == "0x24000"
+    assert kernel_cache.dictionary()["dylibs"][0]["segments"][2]["name"] == "__TEXT_EXEC"
+    assert kernel_cache.dictionary()["dylibs"][0]["segments"][2]["vmAddr"] == "0x10000"
+    assert kernel_cache.dictionary()["dylibs"][0]["segments"][3]["name"] == "__DATA_CONST"
+    assert kernel_cache.dictionary()["dylibs"][0]["segments"][3]["vmAddr"] == "0x18000"
+    assert kernel_cache.dictionary()["dylibs"][0]["segments"][4]["name"] == "__LINKEDIT"
+    assert kernel_cache.dictionary()["dylibs"][0]["segments"][4]["vmAddr"] == "0x2C000"
+    # bar.kext
+    assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.bar"
+    assert len(kernel_cache.dictionary()["dylibs"][1]["segments"]) == 5
+    assert kernel_cache.dictionary()["dylibs"][1]["segments"][0]["name"] == "__TEXT"
+    assert kernel_cache.dictionary()["dylibs"][1]["segments"][0]["vmAddr"] == "0x4000"
+    assert kernel_cache.dictionary()["dylibs"][1]["segments"][1]["name"] == "__TEXT_EXEC"
+    assert kernel_cache.dictionary()["dylibs"][1]["segments"][1]["vmAddr"] == "0x14000"
+    assert kernel_cache.dictionary()["dylibs"][1]["segments"][2]["name"] == "__DATA"
+    assert kernel_cache.dictionary()["dylibs"][1]["segments"][2]["vmAddr"] == "0x28000"
+    assert kernel_cache.dictionary()["dylibs"][1]["segments"][3]["name"] == "__DATA_CONST"
+    assert kernel_cache.dictionary()["dylibs"][1]["segments"][3]["vmAddr"] == "0x1C000"
+    assert kernel_cache.dictionary()["dylibs"][1]["segments"][4]["name"] == "__LINKEDIT"
+    assert kernel_cache.dictionary()["dylibs"][1]["segments"][4]["vmAddr"] == "0x2C000"
+    # foo.kext
+    assert kernel_cache.dictionary()["dylibs"][2]["name"] == "com.apple.foo"
+    assert len(kernel_cache.dictionary()["dylibs"][2]["segments"]) == 4
+    assert kernel_cache.dictionary()["dylibs"][2]["segments"][0]["name"] == "__TEXT"
+    assert kernel_cache.dictionary()["dylibs"][2]["segments"][0]["vmAddr"] == "0x8000"
+    assert kernel_cache.dictionary()["dylibs"][2]["segments"][1]["name"] == "__TEXT_EXEC"
+    assert kernel_cache.dictionary()["dylibs"][2]["segments"][1]["vmAddr"] == "0x14030"
+    assert kernel_cache.dictionary()["dylibs"][2]["segments"][2]["name"] == "__DATA"
+    assert kernel_cache.dictionary()["dylibs"][2]["segments"][2]["vmAddr"] == "0x28004"
+    assert kernel_cache.dictionary()["dylibs"][2]["segments"][3]["name"] == "__LINKEDIT"
+    assert kernel_cache.dictionary()["dylibs"][2]["segments"][3]["vmAddr"] == "0x2C000"
+
+    # Check we have the correct addresses of the symbols being bound to
+    kernel_cache.analyze("/data-const/main.kc", ["-symbols", "-arch", "arm64"])
+    # int g = &x;
+    assert kernel_cache.dictionary()["dylibs"][0]["global-symbols"][3]["name"] == "_x"
+    assert kernel_cache.dictionary()["dylibs"][0]["global-symbols"][3]["vmAddr"] == "0x24000"
+    # foo()
+    assert kernel_cache.dictionary()["dylibs"][2]["global-symbols"][0]["name"] == "_foo"
+    assert kernel_cache.dictionary()["dylibs"][2]["global-symbols"][0]["vmAddr"] == "0x14030"
+
+    kernel_cache.analyze("/data-const/main.kc", ["-fixups", "-arch", "arm64"])
+    # int g = &x;
+    assert kernel_cache.dictionary()["fixups"]["0x18000"] == "kc(0) + 0x24000"
+    # foo()
+    assert kernel_cache.dictionary()["fixups"]["0x1C000"] == "kc(0) + 0x14030"
+
+# [~]> 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 -Wl,-rename_section,__DATA,__data,__DATA_CONST,__data -Wl,-segprot,__DATA_CONST,r--,r-- main.c -o main.kernel
+# [~]> xcrun -sdk iphoneos.internal cc -arch arm64 -Wl,-kext -mkernel -nostdlib -Wl,-add_split_seg_info foo.c -o extensions/foo.kext/foo
+# [~]> xcrun -sdk iphoneos.internal cc -arch arm64 -Wl,-kext -mkernel -nostdlib -Wl,-add_split_seg_info bar.c -o extensions/bar.kext/bar
+# [~]> rm -r extensions/*.kext/*.ld
+