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 void _armv8_aes_probe(void);
23 void _armv8_sha1_probe(void);
24 void _armv8_sha256_probe(void);
25 void _armv8_pmull_probe(void);
26 unsigned int _armv7_tick(void);
28 unsigned int OPENSSL_rdtsc(void)
30 if (OPENSSL_armcap_P & ARMV7_TICK)
36 #if defined(__GNUC__) && __GNUC__>=2
37 void OPENSSL_cpuid_setup(void) __attribute__((constructor));
39 void OPENSSL_cpuid_setup(void)
42 struct sigaction ill_oact,ill_act;
49 if ((e=getenv("OPENSSL_armcap")))
51 OPENSSL_armcap_P=strtoul(e,NULL,0);
55 sigfillset(&all_masked);
56 sigdelset(&all_masked,SIGILL);
57 sigdelset(&all_masked,SIGTRAP);
58 sigdelset(&all_masked,SIGFPE);
59 sigdelset(&all_masked,SIGBUS);
60 sigdelset(&all_masked,SIGSEGV);
64 memset(&ill_act,0,sizeof(ill_act));
65 ill_act.sa_handler = ill_handler;
66 ill_act.sa_mask = all_masked;
68 sigprocmask(SIG_SETMASK,&ill_act.sa_mask,&oset);
69 sigaction(SIGILL,&ill_act,&ill_oact);
71 if (sigsetjmp(ill_jmp,1) == 0)
74 OPENSSL_armcap_P |= ARMV7_NEON;
75 if (sigsetjmp(ill_jmp,1) == 0)
78 OPENSSL_armcap_P |= ARMV8_AES;
80 if (sigsetjmp(ill_jmp,1) == 0)
83 OPENSSL_armcap_P |= ARMV8_SHA1;
85 if (sigsetjmp(ill_jmp,1) == 0)
87 _armv8_sha256_probe();
88 OPENSSL_armcap_P |= ARMV8_SHA256;
90 if (sigsetjmp(ill_jmp,1) == 0)
93 OPENSSL_armcap_P |= ARMV8_PMULL;
96 if (sigsetjmp(ill_jmp,1) == 0)
99 OPENSSL_armcap_P |= ARMV7_TICK;
102 sigaction (SIGILL,&ill_oact,NULL);
103 sigprocmask(SIG_SETMASK,&oset,NULL);