projects / apple / dyld.git / blame
| Commit | Line | Data |
|---|---|---|
| bc3b7c8c A |
1 | #!/usr/bin/python2.7 |
| 2 | ||
| 3 | import os | |
| 4 | import KernelCollection | |
| 5 | ||
| 6 | # This tests that kexts can bind to each other using DYLD_CHAINED_PTR_64_OFFSET | |
| 7 | ||
| 8 | def check(kernel_cache): | |
| 9 | kernel_cache.buildKernelCollection("arm64", "/kext-bind-to-kext-arm64-chains/main.kc", "/kext-bind-to-kext-arm64-chains/main.kernel", "/kext-bind-to-kext-arm64-chains/extensions", ["com.apple.foo", "com.apple.bar"], []) | |
| 10 | ||
| 11 | # layout | |
| 12 | kernel_cache.analyze("/kext-bind-to-kext-arm64-chains/main.kc", ["-layout", "-arch", "arm64"]) | |
| 13 | assert len(kernel_cache.dictionary()["dylibs"]) == 3 | |
| 14 | # main.kernel | |
| 15 | assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel" | |
| 16 | assert len(kernel_cache.dictionary()["dylibs"][0]["segments"]) == 4 | |
| 17 | # bar.kext | |
| 18 | assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.bar" | |
| 19 | assert kernel_cache.dictionary()["dylibs"][1]["segments"][2]["name"] == "__DATA_CONST" | |
| 20 | assert kernel_cache.dictionary()["dylibs"][1]["segments"][2]["vmAddr"] == "0xFFFFFFF00701C000" | |
| 21 | # foo.kext | |
| 22 | assert kernel_cache.dictionary()["dylibs"][2]["name"] == "com.apple.foo" | |
| 23 | ||
| 24 | # Symbols | |
| 25 | kernel_cache.analyze("/kext-bind-to-kext-arm64-chains/main.kc", ["-symbols", "-arch", "arm64"]) | |
| 26 | assert kernel_cache.dictionary()["dylibs"][2]["name"] == "com.apple.foo" | |
| 27 | assert kernel_cache.dictionary()["dylibs"][2]["global-symbols"][0]["name"] == "_foo" | |
| 28 | assert kernel_cache.dictionary()["dylibs"][2]["global-symbols"][0]["vmAddr"] == "0xFFFFFFF007018020" | |
| 29 | ||
| 30 | # Check the fixups | |
| 31 | kernel_cache.analyze("/kext-bind-to-kext-arm64-chains/main.kc", ["-fixups", "-arch", "arm64"]) | |
| 32 | assert len(kernel_cache.dictionary()["fixups"]) == 2 | |
| 33 | # bar.kext: extern int foo(); | |
| 34 | assert kernel_cache.dictionary()["fixups"]["0x20000"] == "kc(0) + 0xFFFFFFF007014000" | |
| 35 | # main.kernel: __typeof(&func) funcPtr = &func; | |
| 36 | assert kernel_cache.dictionary()["fixups"]["0x18000"] == "kc(0) + 0xFFFFFFF007018020" | |
| 37 | assert len(kernel_cache.dictionary()["dylibs"]) == 3 | |
| 38 | assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel" | |
| 39 | assert kernel_cache.dictionary()["dylibs"][0]["fixups"] == "none" | |
| 40 | assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.bar" | |
| 41 | assert kernel_cache.dictionary()["dylibs"][1]["fixups"] == "none" | |
| 42 | assert kernel_cache.dictionary()["dylibs"][2]["name"] == "com.apple.foo" | |
| 43 | assert kernel_cache.dictionary()["dylibs"][2]["fixups"] == "none" | |
| 44 | ||
| 45 | ||
| 46 | # [~]> xcrun -sdk iphoneos.internal cc -arch arm64 -Wl,-static -mkernel -Wl,-fixup_chains -Wl,-kernel -nostdlib -Wl,-add_split_seg_info -Wl,-e,__start -Wl,-pie main.c -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 | |
| 47 | # [~]> xcrun -sdk iphoneos.internal cc -arch arm64 -Wl,-kext -mkernel -nostdlib -Wl,-add_split_seg_info -Wl,-fixup_chains foo.c -o extensions/foo.kext/foo | |
| 48 | # [~]> xcrun -sdk iphoneos.internal cc -arch arm64 -Wl,-kext -mkernel -nostdlib -Wl,-add_split_seg_info -Wl,-fixup_chains bar.c -o extensions/bar.kext/bar | |
| 49 | # [~]> rm -r extensions/*.kext/*.ld | |
| 50 |