| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <signal.h> | |
| static void handler(int sig, siginfo_t *info, void *v) | |
| { | |
| printf("info: sig=%d code=%d addr=0x%lx\n", | |
| info->si_signo, info->si_code, (unsigned long)info->si_addr); | |
| exit(0); | |
| } | |
| int main() | |
| { | |
| struct sigaction sa; | |
| int val; | |
| sa.sa_sigaction = handler; | |
| sigfillset(&sa.sa_mask); | |
| sa.sa_flags = SA_SIGINFO; | |
| sigaction(SIGSEGV, &sa, NULL); | |
| asm volatile("mov %1, %%fs; mov %%fs:0, %0" : "=r" (val) : "r"(4)); | |
| printf("val=%d\n", val); | |
| return 0; | |
| } |