From 9e5b6a08d425401b97d5ed3182d4c2f7111ca6b3 Mon Sep 17 00:00:00 2001 From: Ehsan Akhgari Date: Fri, 1 Aug 2014 18:04:53 +0000 Subject: [PATCH] [ASan] Support the asan_loadN/asan_storeN functions in the DLL thunk library Summary: This is required for linking DLLs with large functions exceeding san-instrumentation-with-call-threshold. One such function is vp9_fdct16x16_sse2 in libvpx. Reviewers: timurrrr Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D4758 llvm-svn: 214532 --- compiler-rt/lib/asan/asan_dll_thunk.cc | 14 ++++++++++++++ .../test/asan/TestCases/Windows/dll_large_function.cc | 11 +++++++++++ 2 files changed, 25 insertions(+) create mode 100644 compiler-rt/test/asan/TestCases/Windows/dll_large_function.cc diff --git a/compiler-rt/lib/asan/asan_dll_thunk.cc b/compiler-rt/lib/asan/asan_dll_thunk.cc index b281fb3..63b6e91 100644 --- a/compiler-rt/lib/asan/asan_dll_thunk.cc +++ b/compiler-rt/lib/asan/asan_dll_thunk.cc @@ -235,6 +235,20 @@ INTERFACE_FUNCTION(__asan_report_load8) INTERFACE_FUNCTION(__asan_report_load16) INTERFACE_FUNCTION(__asan_report_load_n) +INTERFACE_FUNCTION(__asan_store1) +INTERFACE_FUNCTION(__asan_store2) +INTERFACE_FUNCTION(__asan_store4) +INTERFACE_FUNCTION(__asan_store8) +INTERFACE_FUNCTION(__asan_store16) +INTERFACE_FUNCTION(__asan_storeN) + +INTERFACE_FUNCTION(__asan_load1) +INTERFACE_FUNCTION(__asan_load2) +INTERFACE_FUNCTION(__asan_load4) +INTERFACE_FUNCTION(__asan_load8) +INTERFACE_FUNCTION(__asan_load16) +INTERFACE_FUNCTION(__asan_loadN) + INTERFACE_FUNCTION(__asan_memcpy); INTERFACE_FUNCTION(__asan_memset); INTERFACE_FUNCTION(__asan_memmove); diff --git a/compiler-rt/test/asan/TestCases/Windows/dll_large_function.cc b/compiler-rt/test/asan/TestCases/Windows/dll_large_function.cc new file mode 100644 index 0000000..bd20a7b --- /dev/null +++ b/compiler-rt/test/asan/TestCases/Windows/dll_large_function.cc @@ -0,0 +1,11 @@ +// Make sure we can link a DLL with large functions which would mean +// functions such as __asan_loadN and __asan_storeN will be called +// from the DLL. We simulate the large function with +// -mllvm -asan-instrumentation-with-call-threshold=0. +// RUN: %clang_cl_asan %s -c -Fo%t.obj -mllvm -asan-instrumentation-with-call-threshold=0 +// RUN: link /nologo /DLL /OUT:%t.dll %t.obj %asan_dll_thunk + +void f(long* foo, long* bar) { + // One load and one store + *foo = *bar; +} -- 2.7.4