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| author | Mark Rowe <mark@vector35.com> | 2025-09-12 10:01:37 -0700 |
|---|---|---|
| committer | Mark Rowe <mark@vector35.com> | 2025-09-17 20:45:26 -0700 |
| commit | 11dc8b216d0852c83ff5c9bfd7d3ca146a93fe84 (patch) | |
| tree | 2ba043a08032a73ad53b762716ada0cd64f84608 /view/sharedcache/core/ObjC.h | |
| parent | bdb62855f9b6cb85fcf64dba0a067d9056f09af5 (diff) | |
[DSC] Support relative direct selectors in older shared cache versions
Prior to macOS 13 / iOS 16, the base offset to use for relative direct
selector references within Objective-C message lists was stored within
the `__TEXT,__objc_opt_ro` section of /usr/lib/libobjc.A.dylib.
Diffstat (limited to 'view/sharedcache/core/ObjC.h')
| -rw-r--r-- | view/sharedcache/core/ObjC.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/view/sharedcache/core/ObjC.h b/view/sharedcache/core/ObjC.h index a30b9de4..e8c47e70 100644 --- a/view/sharedcache/core/ObjC.h +++ b/view/sharedcache/core/ObjC.h @@ -16,6 +16,22 @@ struct ObjCOptimizationHeader uint64_t relativeMethodSelectorBaseAddressOffset; }; +// `objc_opt_t` from dyld/include/objc-shared-cache.h +struct LegacyObjCOptimizationHeader +{ + uint32_t version; + uint32_t flags; + int32_t selopt_offset; + int32_t headeropt_ro_offset; + int32_t unused_clsopt_offset; + int32_t unused_protocolopt_offset; + int32_t headeropt_rw_offset; + int32_t unused_protocolopt2_offset; + int32_t largeSharedCachesClassOffset; + int32_t largeSharedCachesProtocolOffset; + int64_t relativeMethodSelectorBaseAddressOffset; +}; + namespace DSCObjC { class SharedCacheObjCReader : public BinaryNinja::ObjCReader { |