lkml.org 
[lkml]   [2008]   [Apr]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 0/3] clone64() and unshare64() system calls
H. Peter Anvin wrote:
> sukadev@us.ibm.com wrote:
>>>
>>> If you're going to make it a 64-bit pass it in as a 64-bit number,
>>> instead of breaking it into two numbers.
>>
>> Maybe I am missing your point. The glibc interface could take a 64bit
>> parameter, but don't we need to pass 32-bit values into the system
>> call on 32 bit systems ?
>
> Not as such, no. The ABI handles that. To make the ABI clean on some
> architectures, it's good to consider a 64-bit value only in positions
> where they map to an even:odd register pair once slotted in.

OK. I didn't know that. I took sys_llseek() as an example of an interface
to follow when coded clone64().

Thanks,

C.


\
 
 \ /
  Last update: 2008-04-10 14:35    [W:0.077 / U:0.552 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site