On Mon, Mar 7, 2016 at 3:57 PM, Jeffrey Walton <noloa...@gmail.com> wrote: > On Sun, Mar 6, 2016 at 6:05 PM, Andy Polyakov <ap...@openssl.org> wrote: >>>> Hmm. So why do I see this on my macbook? >>>> >>>> $ arch >>>> i386 >>> >>> Try "uname -m" >> >> This is not reliable. Because it must have changed recently, it used to >> be i386 even on 64-bit systems. sysctl -n hw.optional.x86_64 is the way >> to go, it's right there in ./config... > > ... > However, there are two interesting ones on the PowerMac: > > $ sysctl -A 2>/dev/null | grep hw | egrep 'machine|64' > hw.machine = Power Macintosh > hw.physmem = 2147483648 > hw.l2settings = 2147483648 > hw.optional.64bitops: 1 > hw.cpu64bit_capable: 1
It looks like Apple is using either hw.optional.64bitops or hw.optional.x86_64 (http://opensource.apple.com/source/xnu/xnu-1504.7.4/tools/tests/xnu_quick_test/misc.c?txt): /* * Gets the bit'ed-ness of the current host. Returns either 32 or 64. * This get the hardware capability, but does not tell us whether this * binary is executing in 64 bit or 32 bit mode. Check sizeof long * or pointer to determine that. */ int get_bits() { int my_err, buf; size_t len = 0; int rval = 32; /* * On 32-bit systems the sysctls 64bitops and x86_64 don't * even exists, so if we don't find them then we assume * a 32-bit system. */ /* Check for PPC 64 */ if ((my_err = sysctlbyname("hw.optional.64bitops", NULL, &len, NULL, 0))) goto x86_64check; /* Request size */ if (len > sizeof(buf)) goto x86_64check; if ((my_err = sysctlbyname("hw.optional.64bitops", &buf, &len, NULL, 0))) goto x86_64check; /* Copy value out from kernel */ if (buf == 1) rval = 64; goto finished; x86_64check: /* Check for x86_64 */ if ((my_err = sysctlbyname("hw.optional.x86_64", NULL, &len, NULL, 0))) goto finished; /* Request size */ if (len > sizeof(buf)) goto finished; if ((my_err = sysctlbyname("hw.optional.x86_64", &buf, &len, NULL, 0))) goto finished; /* Copy value out from kernel */ if (buf == 1) rval = 64; finished: return rval; } -- openssl-dev mailing list To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-dev
