libbacktrace: export offline unwinding failures.
This is to help debugging different offline unwiding failures.
Bug: http://b/69383534
Test: run backtrace_test.
Change-Id: I5ed4837027a9f17d032925e97e9f5927161444b3
diff --git a/libbacktrace/Backtrace.cpp b/libbacktrace/Backtrace.cpp
index e18dbf3..5bb6edc 100644
--- a/libbacktrace/Backtrace.cpp
+++ b/libbacktrace/Backtrace.cpp
@@ -142,22 +142,33 @@
}
std::string Backtrace::GetErrorString(BacktraceUnwindError error) {
- switch (error) {
- case BACKTRACE_UNWIND_NO_ERROR:
- return "No error";
- case BACKTRACE_UNWIND_ERROR_SETUP_FAILED:
- return "Setup failed";
- case BACKTRACE_UNWIND_ERROR_MAP_MISSING:
- return "No map found";
- case BACKTRACE_UNWIND_ERROR_INTERNAL:
- return "Internal libbacktrace error, please submit a bugreport";
- case BACKTRACE_UNWIND_ERROR_THREAD_DOESNT_EXIST:
- return "Thread doesn't exist";
- case BACKTRACE_UNWIND_ERROR_THREAD_TIMEOUT:
- return "Thread has not responded to signal in time";
- case BACKTRACE_UNWIND_ERROR_UNSUPPORTED_OPERATION:
- return "Attempt to use an unsupported feature";
- case BACKTRACE_UNWIND_ERROR_NO_CONTEXT:
- return "Attempt to do an offline unwind without a context";
+ switch (error.error_code) {
+ case BACKTRACE_UNWIND_NO_ERROR:
+ return "No error";
+ case BACKTRACE_UNWIND_ERROR_SETUP_FAILED:
+ return "Setup failed";
+ case BACKTRACE_UNWIND_ERROR_MAP_MISSING:
+ return "No map found";
+ case BACKTRACE_UNWIND_ERROR_INTERNAL:
+ return "Internal libbacktrace error, please submit a bugreport";
+ case BACKTRACE_UNWIND_ERROR_THREAD_DOESNT_EXIST:
+ return "Thread doesn't exist";
+ case BACKTRACE_UNWIND_ERROR_THREAD_TIMEOUT:
+ return "Thread has not responded to signal in time";
+ case BACKTRACE_UNWIND_ERROR_UNSUPPORTED_OPERATION:
+ return "Attempt to use an unsupported feature";
+ case BACKTRACE_UNWIND_ERROR_NO_CONTEXT:
+ return "Attempt to do an offline unwind without a context";
+ case BACKTRACE_UNWIND_ERROR_EXCEED_MAX_FRAMES_LIMIT:
+ return "Exceed MAX_BACKTRACE_FRAMES limit";
+ case BACKTRACE_UNWIND_ERROR_ACCESS_MEM_FAILED:
+ return android::base::StringPrintf("Failed to read memory at addr 0x%" PRIx64,
+ error.error_info.addr);
+ case BACKTRACE_UNWIND_ERROR_ACCESS_REG_FAILED:
+ return android::base::StringPrintf("Failed to read register %" PRIu64, error.error_info.regno);
+ case BACKTRACE_UNWIND_ERROR_FIND_PROC_INFO_FAILED:
+ return "Failed to find a function in debug sections";
+ case BACKTRACE_UNWIND_ERROR_EXECUTE_DWARF_INSTRUCTION_FAILED:
+ return "Failed to execute dwarf instructions in debug sections";
}
}