| #include <stdlib.h> |
| #include <signal.h> |
| #include "syscall.h" |
| #include "pthread_impl.h" |
| #include "atomic.h" |
| #include "lock.h" |
| #include "ksigaction.h" |
| |
| _Noreturn void abort(void) |
| { |
| raise(SIGABRT); |
| |
| /* If there was a SIGABRT handler installed and it returned, or if |
| * SIGABRT was blocked or ignored, take an AS-safe lock to prevent |
| * sigaction from installing a new SIGABRT handler, uninstall any |
| * handler that may be present, and re-raise the signal to generate |
| * the default action of abnormal termination. */ |
| __block_all_sigs(0); |
| LOCK(__abort_lock); |
| __syscall(SYS_rt_sigaction, SIGABRT, |
| &(struct k_sigaction){.handler = SIG_DFL}, 0, _NSIG/8); |
| __syscall(SYS_tkill, __pthread_self()->tid, SIGABRT); |
| __syscall(SYS_rt_sigprocmask, SIG_UNBLOCK, |
| &(long[_NSIG/(8*sizeof(long))]){1UL<<(SIGABRT-1)}, 0, _NSIG/8); |
| |
| /* Beyond this point should be unreachable. */ |
| a_crash(); |
| raise(SIGKILL); |
| _Exit(127); |
| } |