diff options
| -rw-r--r-- | src/H5detect.c | 47 |
1 files changed, 43 insertions, 4 deletions
diff --git a/src/H5detect.c b/src/H5detect.c index 3554d50..0f8d051 100644 --- a/src/H5detect.c +++ b/src/H5detect.c @@ -60,9 +60,9 @@ static const char *FileHeader = "\n\ #define MAXDETECT 64 -/* The ALIGNMENT test code may generate the SIGBUS or SIGSEGV signals. We use - * setjmp/longjmp in the signal handlers for recovery. But setjmp/longjmp do - * not necessary restore the signal blocking status while sigsetjmp/siglongjmp +/* The ALIGNMENT test code may generate the SIGBUS, SIGSEGV, or SIGILL signals. + * We use setjmp/longjmp in the signal handlers for recovery. But setjmp/longjmp + * do not necessary restore the signal blocking status while sigsetjmp/siglongjmp * do. If sigsetjmp/siglongjmp are not supported, need to use sigprocmask to * unblock the signal before doing longjmp. */ @@ -139,7 +139,8 @@ static void detect_alignments(void); static size_t align_g[] = {1, 2, 4, 8, 16}; static int align_status_g = 0; /* ALIGNMENT Signal Status */ static int sigbus_handler_called_g = 0; /* how many times called */ -static int sigsegv_handler_called_g = 0; /* how many times called */ +static int sigsegv_handler_called_g = 0;/* how many times called */ +static int sigill_handler_called_g = 0; /* how many times called */ static int signal_handler_tested_g = 0; /* how many times tested */ #if defined(H5SETJMP) && defined(H5_HAVE_SIGNAL) static int verify_signal_handlers(int signum, void (*handler)(int)); @@ -425,6 +426,7 @@ precision (detected_t *d) volatile size_t _ano = 0; \ void (*_handler)(int) = HDsignal(SIGBUS, sigbus_handler); \ void (*_handler2)(int) = HDsignal(SIGSEGV, sigsegv_handler);\ + void (*_handler3)(int) = HDsignal(SIGILL, sigill_handler); \ \ _buf = (char*)HDmalloc(sizeof(TYPE) + align_g[NELMTS(align_g) - 1]); \ if(H5SETJMP(jbuf_g)) _ano++; \ @@ -454,6 +456,7 @@ precision (detected_t *d) HDfree(_buf); \ HDsignal(SIGBUS, _handler); /*restore original handler*/ \ HDsignal(SIGSEGV, _handler2); /*restore original handler*/ \ + HDsignal(SIGILL, _handler3); /*restore original handler*/ \ } #else #define ALIGNMENT(TYPE,INFO) { \ @@ -539,6 +542,42 @@ sigbus_handler(int UNUSED signo) #endif +#if defined(H5LONGJMP) && defined(H5_HAVE_SIGNAL) +/*------------------------------------------------------------------------- + * Function: sigill_handler + * + * Purpose: Handler for SIGILL. We use signal() instead of sigaction() + * because it's more portable to non-Posix systems. Although + * it's not nearly as nice to work with, it does the job for + * this simple stuff. + * + * Return: Returns via H5LONGJMP to jbuf_g. + * + * Programmer: Raymond Lu + * 28 October 2013 + * + *------------------------------------------------------------------------- + */ +static void +sigill_handler(int UNUSED signo) +{ +#if !defined(H5HAVE_SIGJMP) && defined(H5_HAVE_SIGPROCMASK) + /* Use sigprocmask to unblock the signal if sigsetjmp/siglongjmp are not */ + /* supported. */ + sigset_t set; + + HDsigemptyset(&set); + HDsigaddset(&set, SIGILL); + HDsigprocmask(SIG_UNBLOCK, &set, NULL); +#endif + + sigill_handler_called_g++; + HDsignal(SIGILL, sigill_handler); + H5LONGJMP(jbuf_g, SIGILL); +} +#endif + + /*------------------------------------------------------------------------- * Function: print_results * |