- {
- char *e;
- struct sigaction ill_oact,ill_act;
- sigset_t oset;
- static int trigger=0;
-
- if (trigger) return;
- trigger=1;
-
- if ((e=getenv("OPENSSL_armcap")))
- {
- OPENSSL_armcap_P=strtoul(e,NULL,0);
- return;
- }
-
- sigfillset(&all_masked);
- sigdelset(&all_masked,SIGILL);
- sigdelset(&all_masked,SIGTRAP);
- sigdelset(&all_masked,SIGFPE);
- sigdelset(&all_masked,SIGBUS);
- sigdelset(&all_masked,SIGSEGV);
-
- OPENSSL_armcap_P = 0;
-
- memset(&ill_act,0,sizeof(ill_act));
- ill_act.sa_handler = ill_handler;
- ill_act.sa_mask = all_masked;
-
- sigprocmask(SIG_SETMASK,&ill_act.sa_mask,&oset);
- sigaction(SIGILL,&ill_act,&ill_oact);
-
- if (sigsetjmp(ill_jmp,1) == 0)
- {
- _armv7_neon_probe();
- OPENSSL_armcap_P |= ARMV7_NEON;
- }
- if (sigsetjmp(ill_jmp,1) == 0)
- {
- _armv7_tick();
- OPENSSL_armcap_P |= ARMV7_TICK;
- }
-
- sigaction (SIGILL,&ill_oact,NULL);
- sigprocmask(SIG_SETMASK,&oset,NULL);
- }
+{
+ const char *e;
+ struct sigaction ill_oact, ill_act;
+ sigset_t oset;
+ static int trigger = 0;
+
+ if (trigger)
+ return;
+ trigger = 1;
+
+ if ((e = getenv("OPENSSL_armcap"))) {
+ OPENSSL_armcap_P = (unsigned int)strtoul(e, NULL, 0);
+ return;
+ }
+
+# if defined(__APPLE__) && !defined(__aarch64__)
+ /*
+ * Capability probing by catching SIGILL appears to be problematic
+ * on iOS. But since Apple universe is "monocultural", it's actually
+ * possible to simply set pre-defined processor capability mask.
+ */
+ if (1) {
+ OPENSSL_armcap_P = ARMV7_NEON;
+ return;
+ }
+ /*
+ * One could do same even for __aarch64__ iOS builds. It's not done
+ * exclusively for reasons of keeping code unified across platforms.
+ * Unified code works because it never triggers SIGILL on Apple
+ * devices...
+ */
+# endif
+
+ OPENSSL_armcap_P = 0;
+
+# ifdef OSSL_IMPLEMENT_GETAUXVAL
+ if (getauxval(HWCAP) & HWCAP_NEON) {
+ unsigned long hwcap = getauxval(HWCAP_CE);
+
+ OPENSSL_armcap_P |= ARMV7_NEON;
+
+ if (hwcap & HWCAP_CE_AES)
+ OPENSSL_armcap_P |= ARMV8_AES;
+
+ if (hwcap & HWCAP_CE_PMULL)
+ OPENSSL_armcap_P |= ARMV8_PMULL;
+
+ if (hwcap & HWCAP_CE_SHA1)
+ OPENSSL_armcap_P |= ARMV8_SHA1;
+
+ if (hwcap & HWCAP_CE_SHA256)
+ OPENSSL_armcap_P |= ARMV8_SHA256;
+
+# ifdef __aarch64__
+ if (hwcap & HWCAP_CE_SHA512)
+ OPENSSL_armcap_P |= ARMV8_SHA512;
+# endif
+ }
+# endif
+
+ sigfillset(&all_masked);
+ sigdelset(&all_masked, SIGILL);
+ sigdelset(&all_masked, SIGTRAP);
+ sigdelset(&all_masked, SIGFPE);
+ sigdelset(&all_masked, SIGBUS);
+ sigdelset(&all_masked, SIGSEGV);
+
+ memset(&ill_act, 0, sizeof(ill_act));
+ ill_act.sa_handler = ill_handler;
+ ill_act.sa_mask = all_masked;
+
+ sigprocmask(SIG_SETMASK, &ill_act.sa_mask, &oset);
+ sigaction(SIGILL, &ill_act, &ill_oact);
+
+ /* If we used getauxval, we already have all the values */
+# ifndef OSSL_IMPLEMENT_GETAUXVAL
+ if (sigsetjmp(ill_jmp, 1) == 0) {
+ _armv7_neon_probe();
+ OPENSSL_armcap_P |= ARMV7_NEON;
+ if (sigsetjmp(ill_jmp, 1) == 0) {
+ _armv8_pmull_probe();
+ OPENSSL_armcap_P |= ARMV8_PMULL | ARMV8_AES;
+ } else if (sigsetjmp(ill_jmp, 1) == 0) {
+ _armv8_aes_probe();
+ OPENSSL_armcap_P |= ARMV8_AES;
+ }
+ if (sigsetjmp(ill_jmp, 1) == 0) {
+ _armv8_sha1_probe();
+ OPENSSL_armcap_P |= ARMV8_SHA1;
+ }
+ if (sigsetjmp(ill_jmp, 1) == 0) {
+ _armv8_sha256_probe();
+ OPENSSL_armcap_P |= ARMV8_SHA256;
+ }
+# if defined(__aarch64__) && !defined(__APPLE__)
+ if (sigsetjmp(ill_jmp, 1) == 0) {
+ _armv8_sha512_probe();
+ OPENSSL_armcap_P |= ARMV8_SHA512;
+ }
+# endif
+ }
+# endif
+
+ /* Things that getauxval didn't tell us */
+ if (sigsetjmp(ill_jmp, 1) == 0) {
+ _armv7_tick();
+ OPENSSL_armcap_P |= ARMV7_TICK;
+ }
+
+ sigaction(SIGILL, &ill_oact, NULL);
+ sigprocmask(SIG_SETMASK, &oset, NULL);
+}
+#endif