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Date: Sat, 15 Aug 2015 22:13:48 +0800
From: Kai Zhao <loverszhao@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: testing without SIMD, and different SIMD
On Sat, Aug 15, 2015 at 10:11 PM, Solar Designer <solar@...nwall.com> wrote:
> magnum, Kai -
>
> On Sat, Aug 15, 2015 at 04:57:22PM +0300, Solar Designer wrote:
>> Looks like I need to install 32-bit OpenSSL development package, and
>> then we'll need to include -m32 on those last 4 ./configure's I
>> suggested, in addition to "setarch i686".
>
> OK, the 32-bit configures are reasonable now:
>
> [solar@...er src]$ setarch i686
> -sh-4.1$ ./configure --disable-native-tests CFLAGS='-O2 -m32'
> checking build system type... i686-pc-linux-gnu
> checking host system type... i686-pc-linux-gnu
> [...]
> checking size of short... 2
> checking size of int... 4
> checking size of long... 4
> checking size of long long... 8
> checking size of int *... 4
> checking size of void *... 4
> configure: Testing tool-chain's CPU features
> checking for MMX... no
> checking for arch.h alternative... x86-any.h
> checking for 32/64 bit... 32-bit
> checking for extra ASFLAGS... None needed
> checking for X32 ABI... no
> checking for byte ordering according to target triple... little
> [...]
> Target CPU ................................. i686, 32-bit LE
> AES-NI support ............................. depends on OpenSSL
> Target OS .................................. linux-gnu
> Cross compiling ............................ no
> Legacy arch header ......................... x86-any.h
>
> This should be a 32-bit SIMD-less build right away. To have some SIMD,
> we need to explicitly add first -mmmx and then also -msse2 to CFLAGS.
> And then can try -mavx, but it should be same wrt bugs (but is worth
> trying anyway). So that will be our 4 32-bit builds to test.
>
> Unfortunately, this fails to build:
>
> -sh-4.1$ time make -sj32
> In file included from opencl_7z_fmt_plug.c:132:
> opencl-autotune.h: In function 'autotune_run_extra':
> opencl-autotune.h:130: warning: right shift count >= width of type
> [...]
> x86.S:1430: Error: suffix or operands invalid for `pop'
> make[1]: *** [x86.o] Error 1
> make[1]: *** Waiting for unfinished jobs....
> make: *** [default] Error 2
>
> ... and lots of other errors related to 64-bit vs. 32-bit mix, skipped
> here. It looks like ./configure is failing to handle this right.
>
> magnum - would you look into this, please?
>
> Meanwhile, Kai may setup a 32-bit only VM, and run 32-bit tests in there.
>
OK. I will test the 32-bit only VM.
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