On Tue, 24 Jan 2012, Andy Polyakov wrote:
> >> Unfortunately one of the tests core dumps.
> >> Here is what gdb says.
> >> .......
> >> $ gdb -c core ./ssltest
> >> #0 0x080d8590 in gcm_ghash_4bit_mmx ()
> >
> > I would guess that it fails at pinsrw. Intel instructions reference
Good guess.
......
[snip]
0x80d857f <gcm_ghash_4bit_mmx+1087>: pxor 0x110(%esp,%edi,8),%mm7
0x80d8587 <gcm_ghash_4bit_mmx+1095>: and $0xf,%al
0x80d8589 <gcm_ghash_4bit_mmx+1097>: psllq $0x38,%mm3
0x80d858d <gcm_ghash_4bit_mmx+1101>: shr $0x4,%ebp
0x80d8590 <gcm_ghash_4bit_mmx+1104>: pinsrw $0x2,(%esi,%ebx,2),%mm2
0x80d8595 <gcm_ghash_4bit_mmx+1109>: pxor 0x10(%esp,%eax,8),%mm7
0x80d859a <gcm_ghash_4bit_mmx+1114>: rol $0x8,%edx
0x80d859d <gcm_ghash_4bit_mmx+1117>: pxor 0x90(%esp,%eax,8),%mm6
[snip]
(gdb) info all-registers
eax 0x5 5
ecx 0x8928b5da -1993820710
edx 0x7627cf65 1982320485
ebx 0x2a 42
esp 0x8042c30 0x8042c30
ebp 0x6 0x6
esi 0x80d8b00 135105280
edi 0xc 12
eip 0x80d8590 0x80d8590
eflags 0x210206 2163206
cs 0x17 23
ss 0x1f 31
ds 0x819001f 135856159
es 0x1f 31
fs 0x0 0
gs 0x0 0
st0 0 (raw 0x3591ffffaaaaffff0000)
st1 0 (raw 0x0000000005d80017080f)
st2 0 (raw 0x000000000000ffff001f)
st3 0 (raw 0x000000000000ffff0000)
st4 0 (raw 0x000000000000ffff0000)
st5 0 (raw 0x000000000000ffff0000)
st6 -0 (raw 0x815c227ac5f2ffff1f00)
st7 0 (raw 0x2ca1440d24f1ffff02a3)
fctrl 0x1f 31
fstat 0x0 0
ftag 0x1f 31
fiseg 0x0 0
fioff 0xc 12
foseg 0x0 0
fooff 0x1f 31
fop 0x0 0
(gdb) tim@sco507 47%
......
> > doesn't tell when exactly this instruction was introduced, so I assumed
> > it was MMX. But it might be that it was introduced with SSE. Try
> > following. Open crypto/modes/gcm128.c in text editor, locate line that
> > has '/* check MMX bit */' comment and replace '1<<23' with '1<<25'.
Changing crypto/modes/gcm128.c gets test to pass.
> > You must be running it on really old processor...
Pentium II
CPU ID 652
> Another test to perform is following. Revert back to '1<<23', then open
> crypto/modes/asm/ghash-x86.pl in text editor and locate line that reads
> 'if (0) {{ # "May" MMX version is kept for reference...". Replace '(0)'
> with '(!$sse2)'...
[ reverting crypto/modes/gcm128.c ]
This change to crypto/modes/asm/ghash-x86.pl works also.
.......
ALL TESTS SUCCESSFUL.
OPENSSL_CONF=apps/openssl.cnf util/opensslwrap.sh version -a
OpenSSL 1.0.1-beta3-dev 21 Jan 2012
built on: Tue Jan 24 11:06:25 PST 2012
platform: sco5-gcc
options: bn(64,32) rc4(4x,int) des(ptr,risc1,16,long) idea(int) blowfish(idx)
compiler: gcc -DZLIB -DDSO_DLFCN -DHAVE_DLFCN_H -O3 -fomit-frame-pointer
-DOPENSSL_BN_ASM_PART_WORDS -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_GF2m
-DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -DMD5_ASM -DRMD160_ASM -DAES_ASM
-DWHIRLPOOL_ASM -DGHASH_ASM
OPENSSLDIR: "/usr/local/ssl"
.......
Thanks for your help.
--
Tim Rice Multitalents
[email protected]
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