2 Commits

Author	SHA1	Message	Date
Jianzhou Zhao	80e326a8c4	[dfsan] Support passing non-i16 shadow values in TLS mode ... This is a child diff of D92261. It extended TLS arg/ret to work with aggregate types. For a function t foo(t1 a1, t2 a2, ... tn an) Its arguments shadow are saved in TLS args like a1_s, a2_s, ..., an_s TLS ret simply includes r_s. By calculating the type size of each shadow value, we can get their offset. This is similar to what MSan does. See __msan_retval_tls and __msan_param_tls from llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp. Note that this change does not add test cases for overflowed TLS arg/ret because this is hard to test w/o supporting aggregate shdow types. We will be adding them after supporting that. Reviewed-by: morehouse Differential Revision: https://reviews.llvm.org/D92440	2020-12-04 02:45:07 +00:00
Jianzhou Zhao	06c9b4aaa9	Extend the dfsan store/load callback with write/read address ... This helped debugging. Reviewed-by: morehouse Differential Revision: https://reviews.llvm.org/D91236	2020-11-13 19:46:32 +00:00