10 unsigned int OPENSSL_armcap_P;
12 static sigset_t all_masked;
14 static sigjmp_buf ill_jmp;
15 static void ill_handler (int sig) { siglongjmp(ill_jmp,sig); }
18 * Following subroutines could have been inlined, but it's not all
19 * ARM compilers support inline assembler...
21 void _armv7_neon_probe(void);
22 unsigned int _armv7_tick(void);
24 unsigned int OPENSSL_rdtsc(void)
26 if (OPENSSL_armcap_P|ARMV7_TICK)
32 void OPENSSL_cpuid_setup(void)
35 struct sigaction ill_oact,ill_act;
42 if ((e=getenv("OPENSSL_armcap")))
44 OPENSSL_armcap_P=strtoul(e,NULL,0);
48 sigfillset(&all_masked);
49 sigdelset(&all_masked,SIGILL);
50 sigdelset(&all_masked,SIGTRAP);
51 sigdelset(&all_masked,SIGFPE);
52 sigdelset(&all_masked,SIGBUS);
53 sigdelset(&all_masked,SIGSEGV);
57 memset(&ill_act,0,sizeof(ill_act));
58 ill_act.sa_handler = ill_handler;
59 ill_act.sa_mask = all_masked;
61 sigprocmask(SIG_SETMASK,&ill_act.sa_mask,&oset);
62 sigaction(SIGILL,&ill_act,&ill_oact);
64 if (sigsetjmp(ill_jmp,1) == 0)
67 OPENSSL_armcap_P |= ARMV7_NEON;
69 if (sigsetjmp(ill_jmp,1) == 0)
72 OPENSSL_armcap_P |= ARMV7_TICK;
75 sigaction (SIGILL,&ill_oact,NULL);
76 sigprocmask(SIG_SETMASK,&oset,NULL);