diff options
| -rw-r--r-- | compiler-rt/lib/tsan/rtl/tsan_symbolize.cc | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/compiler-rt/lib/tsan/rtl/tsan_symbolize.cc b/compiler-rt/lib/tsan/rtl/tsan_symbolize.cc index 5b178389bfa..4e997e71a3d 100644 --- a/compiler-rt/lib/tsan/rtl/tsan_symbolize.cc +++ b/compiler-rt/lib/tsan/rtl/tsan_symbolize.cc @@ -69,7 +69,56 @@ static ReportStack *NewReportStackEntry(const AddressInfo &info) { return ent; } + + ReportStack *next; + char *module; + uptr offset; + uptr pc; + char *func; + char *file; + int line; + int col; + + +// Denotes fake PC values that come from JIT/JAVA/etc. +// For such PC values __tsan_symbolize_external() will be called. +const uptr kExternalPCBit = 1ULL << 60; + +// May be overriden by JIT/JAVA/etc, +// whatever produces PCs marked with kExternalPCBit. +extern "C" bool __tsan_symbolize_external(uptr pc, + char *func_buf, uptr func_siz, + char *file_buf, uptr file_siz, + int *line, int *col) + SANITIZER_WEAK_ATTRIBUTE; + +bool __tsan_symbolize_external(uptr pc, + char *func_buf, uptr func_siz, + char *file_buf, uptr file_siz, + int *line, int *col) { + return false; +} + ReportStack *SymbolizeCode(uptr addr) { + // Check if PC comes from non-native land. + if (addr & kExternalPCBit) { + // Declare static to not consume too much stack space. + // We symbolize reports in a single thread, so this is fine. + static char func_buf[1024]; + static char file_buf[1024]; + int line, col; + if (!__tsan_symbolize_external(addr, func_buf, sizeof(func_buf), + file_buf, sizeof(file_buf), &line, &col)) + return NewReportStackEntry(addr); + ReportStack *ent = NewReportStackEntry(addr); + ent->module = 0; + ent->offset = 0; + ent->func = internal_strdup(func_buf); + ent->file = internal_strdup(file_buf); + ent->line = line; + ent->col = col; + return ent; + } if (!getSymbolizer()->IsAvailable()) return SymbolizeCodeAddr2Line(addr); ScopedInSymbolizer in_symbolizer; |
