diff options
Diffstat (limited to 'libc/stdlib/abort.c')
| -rw-r--r-- | libc/stdlib/abort.c | 129 |
1 files changed, 75 insertions, 54 deletions
diff --git a/libc/stdlib/abort.c b/libc/stdlib/abort.c index e34c86778..77c2cdc69 100644 --- a/libc/stdlib/abort.c +++ b/libc/stdlib/abort.c @@ -30,99 +30,120 @@ Cambridge, MA 02139, USA. */ /* Our last ditch effort to commit suicide */ -#if defined(__i386__) +#if defined(__alpha__) +#define ABORT_INSTRUCTION asm ("call_pal 0") +#elif defined(__hppa__) +#define ABORT_INSTRUCTION asm ("iitlbp %r0,(%r0)") +#elif defined(__i386__) #define ABORT_INSTRUCTION asm ("hlt") #elif defined(__ia64__) #define ABORT_INSTRUCTION asm ("break 0") +#elif defined(__m68k__) +#define ABORT_INSTRUCTION asm ("illegal") #elif defined(__mc68000__) #define ABORT_INSTRUCTION asm (".long 0xffffffff") #elif defined(__mips__) #define ABORT_INSTRUCTION asm ("break 255") +#elif defined(__powerpc__) +#define ABORT_INSTRUCTION asm (".long 0") #elif defined(__s390__) #define ABORT_INSTRUCTION asm (".word 0") #elif defined(__sparc__) #define ABORT_INSTRUCTION asm ("unimp 0xf00") -#elif defined(__x86_64__) -#define ABORT_INSTRUCTION asm ("hlt") -#elif defined(__hppa__) -#define ABORT_INSTRUCTION asm ("iitlbp %r0,(%r0)") -#elif defined(__powerpc__) -#define ABORT_INSTRUCTION asm (".long 0") #elif defined(__SH5__) #define ABORT_INSTRUCTION asm ("movi 0x10, r9; shori 0xff, r9; trapa r9") #elif defined(__sh2__) #define ABORT_INSTRUCTION asm ("trapa #32") #elif defined(__sh__) #define ABORT_INSTRUCTION asm ("trapa #0xff") +#elif defined(__x86_64__) +#define ABORT_INSTRUCTION asm ("hlt") #else #define ABORT_INSTRUCTION +#warning no abort instruction define for your arch #endif +#ifdef __UCLIBC_HAS_STDIO_SHUTDOWN_ON_ABORT__ +extern void weak_function _stdio_term(void); +#endif extern void _exit __P((int __status)) __attribute__ ((__noreturn__)); static int been_there_done_that = 0; -/* Be prepared in case multiple threads try to abort(). */ +/* Be prepared in case multiple threads try to abort() */ #ifdef __UCLIBC_HAS_THREADS__ -#include <pthread.h> +# include <pthread.h> static pthread_mutex_t mylock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP; # define LOCK __pthread_mutex_lock(&mylock) -# define UNLOCK __pthread_mutex_unlock(&mylock); +# define UNLOCK __pthread_mutex_unlock(&mylock) #else # define LOCK # define UNLOCK #endif -/* Cause an abnormal program termination with core-dump. */ +/* Cause an abnormal program termination with core-dump */ void abort(void) { - sigset_t sigset; - - /* Make sure we acquire the lock before proceeding. */ - LOCK; - - /* Unmask SIGABRT to be sure we can get it */ - if (__sigemptyset(&sigset) == 0 && __sigaddset(&sigset, SIGABRT) == 0) { - sigprocmask(SIG_UNBLOCK, &sigset, (sigset_t *) NULL); - } - - while (1) { - /* Try to suicide with a SIGABRT. */ - if (been_there_done_that == 0) { - been_there_done_that++; - UNLOCK; - raise(SIGABRT); - LOCK; - } + sigset_t sigset; - /* Still here? Try to remove any signal handlers. */ - if (been_there_done_that == 1) { - struct sigaction act; + /* Make sure we acquire the lock before proceeding */ + LOCK; - been_there_done_that++; - memset (&act, '\0', sizeof (struct sigaction)); - act.sa_handler = SIG_DFL; - __sigfillset (&act.sa_mask); - act.sa_flags = 0; - sigaction (SIGABRT, &act, NULL); + /* Unmask SIGABRT to be sure we can get it */ + if (__sigemptyset(&sigset) == 0 && __sigaddset(&sigset, SIGABRT) == 0) { + sigprocmask(SIG_UNBLOCK, &sigset, (sigset_t *) NULL); } - /* Still here? Try to suicide with an illegal instruction */ - if (been_there_done_that == 2) { - been_there_done_that++; - ABORT_INSTRUCTION; - } + while (1) { + /* Try to suicide with a SIGABRT */ + if (been_there_done_that == 0) { + been_there_done_that++; + +#ifdef __UCLIBC_HAS_STDIO_SHUTDOWN_ON_ABORT__ + /* If we are using stdio, try to shut it down. At the very least, + * this will attemt to commit all buffered writes. It may also + * unboffer all writable files, or close them outright. + * Check the stdio routines for details. */ + if (_stdio_term) { + _stdio_term(); + } +#endif - /* Still here? Try to at least exit */ - if (been_there_done_that == 3) { - been_there_done_that++; - _exit (127); +abort_it: + UNLOCK; + raise(SIGABRT); + LOCK; + } + + /* Still here? Try to remove any signal handlers */ + if (been_there_done_that == 1) { + struct sigaction act; + + been_there_done_that++; + memset(&act, '\0', sizeof(struct sigaction)); + act.sa_handler = SIG_DFL; + __sigfillset(&act.sa_mask); + act.sa_flags = 0; + sigaction(SIGABRT, &act, NULL); + + goto abort_it; + } + + /* Still here? Try to suicide with an illegal instruction */ + if (been_there_done_that == 2) { + been_there_done_that++; + ABORT_INSTRUCTION; + } + + /* Still here? Try to at least exit */ + if (been_there_done_that == 3) { + been_there_done_that++; + _exit(127); + } + + /* Still here? We're screwed. Sleepy time. Good night. */ + while (1) + /* Try for ever and ever */ + ABORT_INSTRUCTION; } - - /* Still here? We're screwed. Sleepy time. Good night */ - while (1) - /* Try for ever and ever. */ - ABORT_INSTRUCTION; - } } - |