diff options
Diffstat (limited to 'src/libstrongswan/utils/backtrace.c')
| -rw-r--r-- | src/libstrongswan/utils/backtrace.c | 39 |
1 files changed, 34 insertions, 5 deletions
diff --git a/src/libstrongswan/utils/backtrace.c b/src/libstrongswan/utils/backtrace.c index 77137f9f1..dd2be7a0a 100644 --- a/src/libstrongswan/utils/backtrace.c +++ b/src/libstrongswan/utils/backtrace.c @@ -373,7 +373,7 @@ void backtrace_deinit() {} METHOD(backtrace_t, log_, void, private_backtrace_t *this, FILE *file, bool detailed) { -#ifdef HAVE_BACKTRACE +#if defined(HAVE_BACKTRACE) || defined(HAVE_LIBUNWIND_H) size_t i; char **strings; @@ -420,9 +420,9 @@ METHOD(backtrace_t, log_, void, } } free (strings); -#else /* !HAVE_BACKTRACE */ - println(file, "C library does not support backtrace()."); -#endif /* HAVE_BACKTRACE */ +#else /* !HAVE_BACKTRACE && !HAVE_LIBUNWIND_H */ + println(file, "no support for backtrace()/libunwind"); +#endif /* HAVE_BACKTRACE/HAVE_LIBUNWIND_H */ } METHOD(backtrace_t, contains_function, bool, @@ -518,6 +518,33 @@ METHOD(backtrace_t, destroy, void, free(this); } +#ifdef HAVE_LIBUNWIND_H +#define UNW_LOCAL_ONLY +#include <libunwind.h> + +/** + * libunwind variant for glibc backtrace() + */ +static inline int backtrace_unwind(void **frames, int count) +{ + unw_context_t context; + unw_cursor_t cursor; + unw_word_t ip; + int depth = 0; + + unw_getcontext(&context); + unw_init_local(&cursor, &context); + do + { + unw_get_reg(&cursor, UNW_REG_IP, &ip); + frames[depth++] = (void*)ip; + } + while (depth < count && unw_step(&cursor) > 0); + + return depth; +} +#endif /* HAVE_UNWIND */ + /** * See header */ @@ -527,7 +554,9 @@ backtrace_t *backtrace_create(int skip) void *frames[50]; int frame_count = 0; -#ifdef HAVE_BACKTRACE +#ifdef HAVE_LIBUNWIND_H + frame_count = backtrace_unwind(frames, countof(frames)); +#elif defined(HAVE_BACKTRACE) frame_count = backtrace(frames, countof(frames)); #endif /* HAVE_BACKTRACE */ frame_count = max(frame_count - skip, 0); |