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 #if defined(__GNUC__) && __GNUC__>=2
33 void OPENSSL_cpuid_setup(void) __attribute__((constructor));
35 void OPENSSL_cpuid_setup(void)
38 struct sigaction ill_oact,ill_act;
45 if ((e=getenv("OPENSSL_armcap")))
47 OPENSSL_armcap_P=strtoul(e,NULL,0);
51 sigfillset(&all_masked);
52 sigdelset(&all_masked,SIGILL);
53 sigdelset(&all_masked,SIGTRAP);
54 sigdelset(&all_masked,SIGFPE);
55 sigdelset(&all_masked,SIGBUS);
56 sigdelset(&all_masked,SIGSEGV);
60 memset(&ill_act,0,sizeof(ill_act));
61 ill_act.sa_handler = ill_handler;
62 ill_act.sa_mask = all_masked;
64 sigprocmask(SIG_SETMASK,&ill_act.sa_mask,&oset);
65 sigaction(SIGILL,&ill_act,&ill_oact);
67 if (sigsetjmp(ill_jmp,1) == 0)
70 OPENSSL_armcap_P |= ARMV7_NEON;
72 if (sigsetjmp(ill_jmp,1) == 0)
75 OPENSSL_armcap_P |= ARMV7_TICK;
78 sigaction (SIGILL,&ill_oact,NULL);
79 sigprocmask(SIG_SETMASK,&oset,NULL);