X-Git-Url: https://git.saurik.com/apple/dyld.git/blobdiff_plain/d3f1e533acc7f70659b8bde9b6c040974f05e03b..bc3b7c8cda49ed8598284a489c0bb9694c67c6a4:/testing/kernel-cache-tests/auxkc-missing-weak-bind/test.py

diff --git a/testing/kernel-cache-tests/auxkc-missing-weak-bind/test.py b/testing/kernel-cache-tests/auxkc-missing-weak-bind/test.py
new file mode 100644
index 0000000..4b7f49c
--- /dev/null
+++ b/testing/kernel-cache-tests/auxkc-missing-weak-bind/test.py
@@ -0,0 +1,38 @@
+#!/usr/bin/python2.7
+
+import os
+import KernelCollection
+
+# Check that weak binds can be missing, so long as we check for the magic symbol
+
+def check(kernel_cache):
+    kernel_cache.buildKernelCollection("arm64", "/auxkc-missing-weak-bind/main.kc", "/auxkc-missing-weak-bind/main.kernel", "/auxkc-missing-weak-bind/extensions", [], [])
+    kernel_cache.analyze("/auxkc-missing-weak-bind/main.kc", ["-symbols", "-arch", "arm64"])
+
+    assert len(kernel_cache.dictionary()["dylibs"]) == 1
+    assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel"
+    assert kernel_cache.dictionary()["dylibs"][0]["global-symbols"][2]["name"] == "_gOSKextUnresolved"
+    assert kernel_cache.dictionary()["dylibs"][0]["global-symbols"][2]["vmAddr"] == "0x10000"
+
+    # Now build an aux cache using the baseline kernel collection
+    kernel_cache.buildAuxKernelCollection("arm64", "/auxkc-missing-weak-bind/aux.kc", "/auxkc-missing-weak-bind/main.kc", "", "/auxkc-missing-weak-bind/extensions", ["com.apple.foo", "com.apple.bar"], [])
+    kernel_cache.analyze("/auxkc-missing-weak-bind/aux.kc", ["-fixups", "-arch", "arm64"])
+
+    # Check the fixups
+    assert len(kernel_cache.dictionary()["fixups"]) == 4
+    assert kernel_cache.dictionary()["fixups"]["0x14000"] == "kc(0) + 0x10000"
+    assert kernel_cache.dictionary()["fixups"]["0x14008"] == "kc(0) + 0x10000"
+    assert kernel_cache.dictionary()["fixups"]["0x14010"] == "kc(0) + 0x10000"
+    assert kernel_cache.dictionary()["fixups"]["0x14018"] == "kc(0) + 0x10000"
+    assert len(kernel_cache.dictionary()["dylibs"]) == 2
+    assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.bar"
+    assert kernel_cache.dictionary()["dylibs"][0]["fixups"] == "none"
+    assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.foo"
+    assert kernel_cache.dictionary()["dylibs"][1]["fixups"] == "none"
+
+
+# [~]> 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,-sectcreate,__LINKINFO,__symbolsets,SymbolSets.plist -Wl,-segprot,__LINKINFO,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 -Wl,-fixup_chains
+# [~]> rm -r extensions/*.kext/*.ld
+