Example #1
0
void OPENSSL_cpuid_setup(void)
{
    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

    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 (getauxval != NULL) {
        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;
        }
    } else 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 (sigsetjmp(ill_jmp, 1) == 0) {
        _armv7_tick();
        OPENSSL_armcap_P |= ARMV7_TICK;
    }

    sigaction(SIGILL, &ill_oact, NULL);
    sigprocmask(SIG_SETMASK, &oset, NULL);
}
Example #2
0
void OPENSSL_cpuid_setup(void)
	{
	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;
#ifdef __aarch64__
		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;
			}
#endif
		}
	if (sigsetjmp(ill_jmp,1) == 0)
		{
		_armv7_tick();
		OPENSSL_armcap_P |= ARMV7_TICK;
		}

	sigaction (SIGILL,&ill_oact,NULL);
	sigprocmask(SIG_SETMASK,&oset,NULL);
	}
Example #3
0
void OPENSSL_cpuid_setup(void)
{
    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;
    }

    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 (getauxval != NULL) {
        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;
        }
    } else 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 (sigsetjmp(ill_jmp, 1) == 0) {
        _armv7_tick();
        OPENSSL_armcap_P |= ARMV7_TICK;
    }

    sigaction(SIGILL, &ill_oact, NULL);
    sigprocmask(SIG_SETMASK, &oset, NULL);
}