diff options
| author | Filipe Cabecinhas <me@filcab.net> | 2017-12-15 17:30:50 +0000 |
|---|---|---|
| committer | Filipe Cabecinhas <me@filcab.net> | 2017-12-15 17:30:50 +0000 |
| commit | d2994a18c07c87bb7204ee463fcd11b9485c2239 (patch) | |
| tree | bcd4fe758006fb81c547c61638510cff4e842229 | |
| parent | c81be8bd5687559a577b3828f623261b5edce399 (diff) | |
[ubsan-minimal] Add a path for non-POSIX (and bare-metal) use of the library
Summary:
Hook on -DKERNEL_USE (which is also used in lib/builtins) to not import
strlen and not rely on write() being implemented with the stderr on fd 2.
With this, the only requirements to use this library are:
- "Good enough" std::atomic<void*> and std::atomic<int>
- abort() being implemented
- ubsan_message(const char*) being implemented
Reviewers: eugenis
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D39791
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@320831 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/ubsan_minimal/ubsan_minimal_handlers.cc | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/ubsan_minimal/ubsan_minimal_handlers.cc b/lib/ubsan_minimal/ubsan_minimal_handlers.cc index 92b673d9e..5a5675c98 100644 --- a/lib/ubsan_minimal/ubsan_minimal_handlers.cc +++ b/lib/ubsan_minimal/ubsan_minimal_handlers.cc @@ -5,9 +5,14 @@ #include <string.h> #include <unistd.h> +#ifdef KERNEL_USE +extern "C" void ubsan_message(const char *msg); +static void message(const char *msg) { ubsan_message(msg); } +#else static void message(const char *msg) { write(2, msg, strlen(msg)); } +#endif static const int kMaxCallerPcs = 20; static __sanitizer::atomic_uintptr_t caller_pcs[kMaxCallerPcs]; |