linux-kernel - Re: [PATCH] Fix float to unsigned conversion failure with SPE enabled

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Wed, 17 Nov 2010 09:39:34 +0800
From:	haishan <shan.hai@...driver.com>
To:	Josh Boyer <jwboyer@...il.com>
CC:	Hai Shan <haishan.bai@...il.com>, linux-kernel@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH] Fix float to unsigned conversion failure with SPE enabled

Josh Boyer wrote:
> On Sat, Nov 13, 2010 at 11:11 PM, Hai Shan <haishan.bai@...il.com> wrote:
>   
>> Fixed the failure on converting minus float to unsigned int with SPE enabled
>>
>> Signed-off-by: Hai Shan <shan.hai@...driver.com>
>>     
>
> You should make sure to send PowerPC patches to linuxppc-dev.
>
>   

Thanks for your suggestion, I will send it to linuxppc-dev.

Regards
Shan Hai

> josh
>
>   
>> ---
>>  arch/powerpc/math-emu/math_efp.c |   17 +++++++++++++----
>>  1 files changed, 13 insertions(+), 4 deletions(-)
>>
>> diff --git a/arch/powerpc/math-emu/math_efp.c b/arch/powerpc/math-emu/math_efp.c
>> index 41f4ef3..338a128 100644
>> --- a/arch/powerpc/math-emu/math_efp.c
>> +++ b/arch/powerpc/math-emu/math_efp.c
>> @@ -320,7 +320,9 @@ int do_spe_mathemu(struct pt_regs *regs)
>>                        } else {
>>                                _FP_ROUND_ZERO(1, SB);
>>                        }
>> -                       FP_TO_INT_S(vc.wp[1], SB, 32, ((func & 0x3) != 0));
>> +                       /* SB_s: convert from minus float to unsigned int */
>> +                       FP_TO_INT_S(vc.wp[1], SB, 32,
>> +                                       ((func & 0x3) != 0) || SB_s);
>>                        goto update_regs;
>>
>>                default:
>> @@ -458,7 +460,11 @@ cmp_s:
>>                        } else {
>>                                _FP_ROUND_ZERO(2, DB);
>>                        }
>> -                       FP_TO_INT_D(vc.wp[1], DB, 32, ((func & 0x3) != 0));
>> +                       /* DB_s: convert from minus long double to
>> +                        * unsigned long long
>> +                        */
>> +                       FP_TO_INT_D(vc.wp[1], DB, 32,
>> +                                       ((func & 0x3) != 0) || DB_s);
>>                        goto update_regs;
>>
>>                default:
>> @@ -589,8 +595,11 @@ cmp_d:
>>                                _FP_ROUND_ZERO(1, SB0);
>>                                _FP_ROUND_ZERO(1, SB1);
>>                        }
>> -                       FP_TO_INT_S(vc.wp[0], SB0, 32, ((func & 0x3) != 0));
>> -                       FP_TO_INT_S(vc.wp[1], SB1, 32, ((func & 0x3) != 0));
>> +                       /* SB*_s: convert from minus float to unsigned int */
>> +                       FP_TO_INT_S(vc.wp[0], SB0, 32,
>> +                                       ((func & 0x3) != 0) || SB0_s);
>> +                       FP_TO_INT_S(vc.wp[1], SB1, 32,
>> +                                       ((func & 0x3) != 0) || SB1_s);
>>                        goto update_regs;
>>
>>                default:
>> --
>> 1.7.0.4
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
>> the body of a message to majordomo@...r.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>> Please read the FAQ at  http://www.tux.org/lkml/
>>
>>     

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/